1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2015 Nexenta Systems, Inc. All rights reserved. 24 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 25 * Copyright (c) 2012 by Delphix. All rights reserved. 26 */ 27 28 /* 29 * Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. 30 * All Rights Reserved 31 */ 32 33 #include <sys/param.h> 34 #include <sys/types.h> 35 #include <sys/systm.h> 36 #include <sys/cred.h> 37 #include <sys/buf.h> 38 #include <sys/vfs.h> 39 #include <sys/vfs_opreg.h> 40 #include <sys/vnode.h> 41 #include <sys/uio.h> 42 #include <sys/errno.h> 43 #include <sys/sysmacros.h> 44 #include <sys/statvfs.h> 45 #include <sys/kmem.h> 46 #include <sys/dirent.h> 47 #include <sys/cmn_err.h> 48 #include <sys/debug.h> 49 #include <sys/systeminfo.h> 50 #include <sys/flock.h> 51 #include <sys/pathname.h> 52 #include <sys/nbmlock.h> 53 #include <sys/share.h> 54 #include <sys/atomic.h> 55 #include <sys/policy.h> 56 #include <sys/fem.h> 57 #include <sys/sdt.h> 58 #include <sys/ddi.h> 59 #include <sys/zone.h> 60 #include <sys/kstat.h> 61 62 #include <fs/fs_reparse.h> 63 64 #include <rpc/types.h> 65 #include <rpc/auth.h> 66 #include <rpc/rpcsec_gss.h> 67 #include <rpc/svc.h> 68 69 #include <nfs/nfs.h> 70 #include <nfs/export.h> 71 #include <nfs/nfs_cmd.h> 72 #include <nfs/lm.h> 73 #include <nfs/nfs4.h> 74 75 #include <sys/strsubr.h> 76 #include <sys/strsun.h> 77 78 #include <inet/common.h> 79 #include <inet/ip.h> 80 #include <inet/ip6.h> 81 82 #include <sys/tsol/label.h> 83 #include <sys/tsol/tndb.h> 84 85 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ 86 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; 87 #define RFS4_LOCK_DELAY 10 /* Milliseconds */ 88 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; 89 extern struct svc_ops rdma_svc_ops; 90 extern int nfs_loaned_buffers; 91 /* End of Tunables */ 92 93 static int rdma_setup_read_data4(READ4args *, READ4res *); 94 95 /* 96 * Used to bump the stateid4.seqid value and show changes in the stateid 97 */ 98 #define next_stateid(sp) (++(sp)->bits.chgseq) 99 100 /* 101 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 102 * This is used to return NFS4ERR_TOOSMALL when clients specify 103 * maxcount that isn't large enough to hold the smallest possible 104 * XDR encoded dirent. 105 * 106 * sizeof cookie (8 bytes) + 107 * sizeof name_len (4 bytes) + 108 * sizeof smallest (padded) name (4 bytes) + 109 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 110 * sizeof attrlist4_len (4 bytes) + 111 * sizeof next boolean (4 bytes) 112 * 113 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 114 * the smallest possible entry4 (assumes no attrs requested). 115 * sizeof nfsstat4 (4 bytes) + 116 * sizeof verifier4 (8 bytes) + 117 * sizeof entry4list bool (4 bytes) + 118 * sizeof entry4 (36 bytes) + 119 * sizeof eof bool (4 bytes) 120 * 121 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 122 * VOP_READDIR. Its value is the size of the maximum possible dirent 123 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 124 * required for a given name length. MAXNAMELEN is the maximum 125 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 126 * macros are to allow for . and .. entries -- just a minor tweak to try 127 * and guarantee that buffer we give to VOP_READDIR will be large enough 128 * to hold ., .., and the largest possible solaris dirent64. 129 */ 130 #define RFS4_MINLEN_ENTRY4 36 131 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 132 #define RFS4_MINLEN_RDDIR_BUF \ 133 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 134 135 /* 136 * It would be better to pad to 4 bytes since that's what XDR would do, 137 * but the dirents UFS gives us are already padded to 8, so just take 138 * what we're given. Dircount is only a hint anyway. Currently the 139 * solaris kernel is ASCII only, so there's no point in calling the 140 * UTF8 functions. 141 * 142 * dirent64: named padded to provide 8 byte struct alignment 143 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 144 * 145 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 146 * 147 */ 148 #define DIRENT64_TO_DIRCOUNT(dp) \ 149 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 150 151 time_t rfs4_start_time; /* Initialized in rfs4_srvrinit */ 152 153 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 154 155 u_longlong_t nfs4_srv_caller_id; 156 uint_t nfs4_srv_vkey = 0; 157 158 verifier4 Write4verf; 159 verifier4 Readdir4verf; 160 161 void rfs4_init_compound_state(struct compound_state *); 162 163 static void nullfree(caddr_t); 164 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 165 struct compound_state *); 166 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 167 struct compound_state *); 168 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 169 struct compound_state *); 170 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 171 struct compound_state *); 172 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 173 struct compound_state *); 174 static void rfs4_op_create_free(nfs_resop4 *resop); 175 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, 176 struct svc_req *, struct compound_state *); 177 static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *, 178 struct svc_req *, struct compound_state *); 179 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 180 struct compound_state *); 181 static void rfs4_op_getattr_free(nfs_resop4 *); 182 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 183 struct compound_state *); 184 static void rfs4_op_getfh_free(nfs_resop4 *); 185 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 186 struct compound_state *); 187 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 188 struct compound_state *); 189 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 190 struct compound_state *); 191 static void lock_denied_free(nfs_resop4 *); 192 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 193 struct compound_state *); 194 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 195 struct compound_state *); 196 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 197 struct compound_state *); 198 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 199 struct compound_state *); 200 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 201 struct svc_req *req, struct compound_state *cs); 202 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 203 struct compound_state *); 204 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 205 struct compound_state *); 206 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 207 struct svc_req *, struct compound_state *); 208 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 209 struct svc_req *, struct compound_state *); 210 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 211 struct compound_state *); 212 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 213 struct compound_state *); 214 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 215 struct compound_state *); 216 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 217 struct compound_state *); 218 static void rfs4_op_read_free(nfs_resop4 *); 219 static void rfs4_op_readdir_free(nfs_resop4 *resop); 220 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 221 struct compound_state *); 222 static void rfs4_op_readlink_free(nfs_resop4 *); 223 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 224 struct svc_req *, struct compound_state *); 225 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 226 struct compound_state *); 227 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 228 struct compound_state *); 229 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 230 struct compound_state *); 231 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 232 struct compound_state *); 233 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 234 struct compound_state *); 235 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 236 struct compound_state *); 237 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 238 struct compound_state *); 239 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 240 struct compound_state *); 241 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 242 struct svc_req *, struct compound_state *); 243 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 244 struct svc_req *req, struct compound_state *); 245 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 246 struct compound_state *); 247 static void rfs4_op_secinfo_free(nfs_resop4 *); 248 249 static nfsstat4 check_open_access(uint32_t, 250 struct compound_state *, struct svc_req *); 251 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 252 void rfs4_ss_clid(rfs4_client_t *); 253 254 /* 255 * translation table for attrs 256 */ 257 struct nfs4_ntov_table { 258 union nfs4_attr_u *na; 259 uint8_t amap[NFS4_MAXNUM_ATTRS]; 260 int attrcnt; 261 bool_t vfsstat; 262 }; 263 264 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 265 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 266 struct nfs4_svgetit_arg *sargp); 267 268 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 269 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 270 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 271 272 fem_t *deleg_rdops; 273 fem_t *deleg_wrops; 274 275 rfs4_servinst_t *rfs4_cur_servinst = NULL; /* current server instance */ 276 kmutex_t rfs4_servinst_lock; /* protects linked list */ 277 int rfs4_seen_first_compound; /* set first time we see one */ 278 279 /* 280 * NFS4 op dispatch table 281 */ 282 283 struct rfsv4disp { 284 void (*dis_proc)(); /* proc to call */ 285 void (*dis_resfree)(); /* frees space allocated by proc */ 286 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 287 int op_type; /* operation type, see below */ 288 }; 289 290 /* 291 * operation types; used primarily for the per-exportinfo kstat implementation 292 */ 293 #define NFS4_OP_NOFH 0 /* The operation does not operate with any */ 294 /* particular filehandle; we cannot associate */ 295 /* it with any exportinfo. */ 296 297 #define NFS4_OP_CFH 1 /* The operation works with the current */ 298 /* filehandle; we associate the operation */ 299 /* with the exportinfo related to the current */ 300 /* filehandle (as set before the operation is */ 301 /* executed). */ 302 303 #define NFS4_OP_SFH 2 /* The operation works with the saved */ 304 /* filehandle; we associate the operation */ 305 /* with the exportinfo related to the saved */ 306 /* filehandle (as set before the operation is */ 307 /* executed). */ 308 309 #define NFS4_OP_POSTCFH 3 /* The operation ignores the current */ 310 /* filehandle, but sets the new current */ 311 /* filehandle instead; we associate the */ 312 /* operation with the exportinfo related to */ 313 /* the current filehandle as set after the */ 314 /* operation is successfuly executed. Since */ 315 /* we do not know the particular exportinfo */ 316 /* (and thus the kstat) before the operation */ 317 /* is done, there is no simple way how to */ 318 /* update some I/O kstat statistics related */ 319 /* to kstat_queue(9F). */ 320 321 static struct rfsv4disp rfsv4disptab[] = { 322 /* 323 * NFS VERSION 4 324 */ 325 326 /* RFS_NULL = 0 */ 327 {rfs4_op_illegal, nullfree, 0, NFS4_OP_NOFH}, 328 329 /* UNUSED = 1 */ 330 {rfs4_op_illegal, nullfree, 0, NFS4_OP_NOFH}, 331 332 /* UNUSED = 2 */ 333 {rfs4_op_illegal, nullfree, 0, NFS4_OP_NOFH}, 334 335 /* OP_ACCESS = 3 */ 336 {rfs4_op_access, nullfree, RPC_IDEMPOTENT, NFS4_OP_CFH}, 337 338 /* OP_CLOSE = 4 */ 339 {rfs4_op_close, nullfree, 0, NFS4_OP_CFH}, 340 341 /* OP_COMMIT = 5 */ 342 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT, NFS4_OP_CFH}, 343 344 /* OP_CREATE = 6 */ 345 {rfs4_op_create, nullfree, 0, NFS4_OP_CFH}, 346 347 /* OP_DELEGPURGE = 7 */ 348 {rfs4_op_delegpurge, nullfree, 0, NFS4_OP_NOFH}, 349 350 /* OP_DELEGRETURN = 8 */ 351 {rfs4_op_delegreturn, nullfree, 0, NFS4_OP_CFH}, 352 353 /* OP_GETATTR = 9 */ 354 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT, NFS4_OP_CFH}, 355 356 /* OP_GETFH = 10 */ 357 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL, NFS4_OP_CFH}, 358 359 /* OP_LINK = 11 */ 360 {rfs4_op_link, nullfree, 0, NFS4_OP_CFH}, 361 362 /* OP_LOCK = 12 */ 363 {rfs4_op_lock, lock_denied_free, 0, NFS4_OP_CFH}, 364 365 /* OP_LOCKT = 13 */ 366 {rfs4_op_lockt, lock_denied_free, 0, NFS4_OP_CFH}, 367 368 /* OP_LOCKU = 14 */ 369 {rfs4_op_locku, nullfree, 0, NFS4_OP_CFH}, 370 371 /* OP_LOOKUP = 15 */ 372 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK), 373 NFS4_OP_CFH}, 374 375 /* OP_LOOKUPP = 16 */ 376 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK), 377 NFS4_OP_CFH}, 378 379 /* OP_NVERIFY = 17 */ 380 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT, NFS4_OP_CFH}, 381 382 /* OP_OPEN = 18 */ 383 {rfs4_op_open, rfs4_free_reply, 0, NFS4_OP_CFH}, 384 385 /* OP_OPENATTR = 19 */ 386 {rfs4_op_openattr, nullfree, 0, NFS4_OP_CFH}, 387 388 /* OP_OPEN_CONFIRM = 20 */ 389 {rfs4_op_open_confirm, nullfree, 0, NFS4_OP_CFH}, 390 391 /* OP_OPEN_DOWNGRADE = 21 */ 392 {rfs4_op_open_downgrade, nullfree, 0, NFS4_OP_CFH}, 393 394 /* OP_OPEN_PUTFH = 22 */ 395 {rfs4_op_putfh, nullfree, RPC_ALL, NFS4_OP_POSTCFH}, 396 397 /* OP_PUTPUBFH = 23 */ 398 {rfs4_op_putpubfh, nullfree, RPC_ALL, NFS4_OP_POSTCFH}, 399 400 /* OP_PUTROOTFH = 24 */ 401 {rfs4_op_putrootfh, nullfree, RPC_ALL, NFS4_OP_POSTCFH}, 402 403 /* OP_READ = 25 */ 404 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT, NFS4_OP_CFH}, 405 406 /* OP_READDIR = 26 */ 407 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT, NFS4_OP_CFH}, 408 409 /* OP_READLINK = 27 */ 410 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT, NFS4_OP_CFH}, 411 412 /* OP_REMOVE = 28 */ 413 {rfs4_op_remove, nullfree, 0, NFS4_OP_CFH}, 414 415 /* OP_RENAME = 29 */ 416 {rfs4_op_rename, nullfree, 0, NFS4_OP_CFH}, 417 418 /* OP_RENEW = 30 */ 419 {rfs4_op_renew, nullfree, 0, NFS4_OP_NOFH}, 420 421 /* OP_RESTOREFH = 31 */ 422 {rfs4_op_restorefh, nullfree, RPC_ALL, NFS4_OP_SFH}, 423 424 /* OP_SAVEFH = 32 */ 425 {rfs4_op_savefh, nullfree, RPC_ALL, NFS4_OP_CFH}, 426 427 /* OP_SECINFO = 33 */ 428 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0, NFS4_OP_CFH}, 429 430 /* OP_SETATTR = 34 */ 431 {rfs4_op_setattr, nullfree, 0, NFS4_OP_CFH}, 432 433 /* OP_SETCLIENTID = 35 */ 434 {rfs4_op_setclientid, nullfree, 0, NFS4_OP_NOFH}, 435 436 /* OP_SETCLIENTID_CONFIRM = 36 */ 437 {rfs4_op_setclientid_confirm, nullfree, 0, NFS4_OP_NOFH}, 438 439 /* OP_VERIFY = 37 */ 440 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT, NFS4_OP_CFH}, 441 442 /* OP_WRITE = 38 */ 443 {rfs4_op_write, nullfree, 0, NFS4_OP_CFH}, 444 445 /* OP_RELEASE_LOCKOWNER = 39 */ 446 {rfs4_op_release_lockowner, nullfree, 0, NFS4_OP_NOFH}, 447 }; 448 449 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 450 451 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 452 453 #ifdef DEBUG 454 455 int rfs4_fillone_debug = 0; 456 int rfs4_no_stub_access = 1; 457 int rfs4_rddir_debug = 0; 458 459 static char *rfs4_op_string[] = { 460 "rfs4_op_null", 461 "rfs4_op_1 unused", 462 "rfs4_op_2 unused", 463 "rfs4_op_access", 464 "rfs4_op_close", 465 "rfs4_op_commit", 466 "rfs4_op_create", 467 "rfs4_op_delegpurge", 468 "rfs4_op_delegreturn", 469 "rfs4_op_getattr", 470 "rfs4_op_getfh", 471 "rfs4_op_link", 472 "rfs4_op_lock", 473 "rfs4_op_lockt", 474 "rfs4_op_locku", 475 "rfs4_op_lookup", 476 "rfs4_op_lookupp", 477 "rfs4_op_nverify", 478 "rfs4_op_open", 479 "rfs4_op_openattr", 480 "rfs4_op_open_confirm", 481 "rfs4_op_open_downgrade", 482 "rfs4_op_putfh", 483 "rfs4_op_putpubfh", 484 "rfs4_op_putrootfh", 485 "rfs4_op_read", 486 "rfs4_op_readdir", 487 "rfs4_op_readlink", 488 "rfs4_op_remove", 489 "rfs4_op_rename", 490 "rfs4_op_renew", 491 "rfs4_op_restorefh", 492 "rfs4_op_savefh", 493 "rfs4_op_secinfo", 494 "rfs4_op_setattr", 495 "rfs4_op_setclientid", 496 "rfs4_op_setclient_confirm", 497 "rfs4_op_verify", 498 "rfs4_op_write", 499 "rfs4_op_release_lockowner", 500 "rfs4_op_illegal" 501 }; 502 #endif 503 504 void rfs4_ss_chkclid(rfs4_client_t *); 505 506 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 507 508 extern void rfs4_free_fs_locations4(fs_locations4 *); 509 510 #ifdef nextdp 511 #undef nextdp 512 #endif 513 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 514 515 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 516 VOPNAME_OPEN, { .femop_open = deleg_rd_open }, 517 VOPNAME_WRITE, { .femop_write = deleg_rd_write }, 518 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, 519 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 520 VOPNAME_SPACE, { .femop_space = deleg_rd_space }, 521 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, 522 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, 523 NULL, NULL 524 }; 525 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 526 VOPNAME_OPEN, { .femop_open = deleg_wr_open }, 527 VOPNAME_READ, { .femop_read = deleg_wr_read }, 528 VOPNAME_WRITE, { .femop_write = deleg_wr_write }, 529 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, 530 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 531 VOPNAME_SPACE, { .femop_space = deleg_wr_space }, 532 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, 533 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, 534 NULL, NULL 535 }; 536 537 int 538 rfs4_srvrinit(void) 539 { 540 timespec32_t verf; 541 int error; 542 extern void rfs4_attr_init(); 543 extern krwlock_t rfs4_deleg_policy_lock; 544 545 /* 546 * The following algorithm attempts to find a unique verifier 547 * to be used as the write verifier returned from the server 548 * to the client. It is important that this verifier change 549 * whenever the server reboots. Of secondary importance, it 550 * is important for the verifier to be unique between two 551 * different servers. 552 * 553 * Thus, an attempt is made to use the system hostid and the 554 * current time in seconds when the nfssrv kernel module is 555 * loaded. It is assumed that an NFS server will not be able 556 * to boot and then to reboot in less than a second. If the 557 * hostid has not been set, then the current high resolution 558 * time is used. This will ensure different verifiers each 559 * time the server reboots and minimize the chances that two 560 * different servers will have the same verifier. 561 * XXX - this is broken on LP64 kernels. 562 */ 563 verf.tv_sec = (time_t)zone_get_hostid(NULL); 564 if (verf.tv_sec != 0) { 565 verf.tv_nsec = gethrestime_sec(); 566 } else { 567 timespec_t tverf; 568 569 gethrestime(&tverf); 570 verf.tv_sec = (time_t)tverf.tv_sec; 571 verf.tv_nsec = tverf.tv_nsec; 572 } 573 574 Write4verf = *(uint64_t *)&verf; 575 576 rfs4_attr_init(); 577 mutex_init(&rfs4_deleg_lock, NULL, MUTEX_DEFAULT, NULL); 578 579 /* Used to manage create/destroy of server state */ 580 mutex_init(&rfs4_state_lock, NULL, MUTEX_DEFAULT, NULL); 581 582 /* Used to manage access to server instance linked list */ 583 mutex_init(&rfs4_servinst_lock, NULL, MUTEX_DEFAULT, NULL); 584 585 /* Used to manage access to rfs4_deleg_policy */ 586 rw_init(&rfs4_deleg_policy_lock, NULL, RW_DEFAULT, NULL); 587 588 error = fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops); 589 if (error != 0) { 590 rfs4_disable_delegation(); 591 } else { 592 error = fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 593 &deleg_wrops); 594 if (error != 0) { 595 rfs4_disable_delegation(); 596 fem_free(deleg_rdops); 597 } 598 } 599 600 nfs4_srv_caller_id = fs_new_caller_id(); 601 602 lockt_sysid = lm_alloc_sysidt(); 603 604 vsd_create(&nfs4_srv_vkey, NULL); 605 606 return (0); 607 } 608 609 void 610 rfs4_srvrfini(void) 611 { 612 extern krwlock_t rfs4_deleg_policy_lock; 613 614 if (lockt_sysid != LM_NOSYSID) { 615 lm_free_sysidt(lockt_sysid); 616 lockt_sysid = LM_NOSYSID; 617 } 618 619 mutex_destroy(&rfs4_deleg_lock); 620 mutex_destroy(&rfs4_state_lock); 621 rw_destroy(&rfs4_deleg_policy_lock); 622 623 fem_free(deleg_rdops); 624 fem_free(deleg_wrops); 625 } 626 627 void 628 rfs4_init_compound_state(struct compound_state *cs) 629 { 630 bzero(cs, sizeof (*cs)); 631 cs->cont = TRUE; 632 cs->access = CS_ACCESS_DENIED; 633 cs->deleg = FALSE; 634 cs->mandlock = FALSE; 635 cs->fh.nfs_fh4_val = cs->fhbuf; 636 } 637 638 void 639 rfs4_grace_start(rfs4_servinst_t *sip) 640 { 641 rw_enter(&sip->rwlock, RW_WRITER); 642 sip->start_time = (time_t)TICK_TO_SEC(ddi_get_lbolt()); 643 sip->grace_period = rfs4_grace_period; 644 rw_exit(&sip->rwlock); 645 } 646 647 /* 648 * returns true if the instance's grace period has never been started 649 */ 650 int 651 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 652 { 653 time_t start_time; 654 655 rw_enter(&sip->rwlock, RW_READER); 656 start_time = sip->start_time; 657 rw_exit(&sip->rwlock); 658 659 return (start_time == 0); 660 } 661 662 /* 663 * Indicates if server instance is within the 664 * grace period. 665 */ 666 int 667 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 668 { 669 time_t grace_expiry; 670 671 rw_enter(&sip->rwlock, RW_READER); 672 grace_expiry = sip->start_time + sip->grace_period; 673 rw_exit(&sip->rwlock); 674 675 return (((time_t)TICK_TO_SEC(ddi_get_lbolt())) < grace_expiry); 676 } 677 678 int 679 rfs4_clnt_in_grace(rfs4_client_t *cp) 680 { 681 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 682 683 return (rfs4_servinst_in_grace(cp->rc_server_instance)); 684 } 685 686 /* 687 * reset all currently active grace periods 688 */ 689 void 690 rfs4_grace_reset_all(void) 691 { 692 rfs4_servinst_t *sip; 693 694 mutex_enter(&rfs4_servinst_lock); 695 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 696 if (rfs4_servinst_in_grace(sip)) 697 rfs4_grace_start(sip); 698 mutex_exit(&rfs4_servinst_lock); 699 } 700 701 /* 702 * start any new instances' grace periods 703 */ 704 void 705 rfs4_grace_start_new(void) 706 { 707 rfs4_servinst_t *sip; 708 709 mutex_enter(&rfs4_servinst_lock); 710 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 711 if (rfs4_servinst_grace_new(sip)) 712 rfs4_grace_start(sip); 713 mutex_exit(&rfs4_servinst_lock); 714 } 715 716 static rfs4_dss_path_t * 717 rfs4_dss_newpath(rfs4_servinst_t *sip, char *path, unsigned index) 718 { 719 size_t len; 720 rfs4_dss_path_t *dss_path; 721 722 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 723 724 /* 725 * Take a copy of the string, since the original may be overwritten. 726 * Sadly, no strdup() in the kernel. 727 */ 728 /* allow for NUL */ 729 len = strlen(path) + 1; 730 dss_path->path = kmem_alloc(len, KM_SLEEP); 731 (void) strlcpy(dss_path->path, path, len); 732 733 /* associate with servinst */ 734 dss_path->sip = sip; 735 dss_path->index = index; 736 737 /* 738 * Add to list of served paths. 739 * No locking required, as we're only ever called at startup. 740 */ 741 if (rfs4_dss_pathlist == NULL) { 742 /* this is the first dss_path_t */ 743 744 /* needed for insque/remque */ 745 dss_path->next = dss_path->prev = dss_path; 746 747 rfs4_dss_pathlist = dss_path; 748 } else { 749 insque(dss_path, rfs4_dss_pathlist); 750 } 751 752 return (dss_path); 753 } 754 755 /* 756 * Create a new server instance, and make it the currently active instance. 757 * Note that starting the grace period too early will reduce the clients' 758 * recovery window. 759 */ 760 void 761 rfs4_servinst_create(int start_grace, int dss_npaths, char **dss_paths) 762 { 763 unsigned i; 764 rfs4_servinst_t *sip; 765 rfs4_oldstate_t *oldstate; 766 767 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 768 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 769 770 sip->start_time = (time_t)0; 771 sip->grace_period = (time_t)0; 772 sip->next = NULL; 773 sip->prev = NULL; 774 775 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 776 /* 777 * This initial dummy entry is required to setup for insque/remque. 778 * It must be skipped over whenever the list is traversed. 779 */ 780 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 781 /* insque/remque require initial list entry to be self-terminated */ 782 oldstate->next = oldstate; 783 oldstate->prev = oldstate; 784 sip->oldstate = oldstate; 785 786 787 sip->dss_npaths = dss_npaths; 788 sip->dss_paths = kmem_alloc(dss_npaths * 789 sizeof (rfs4_dss_path_t *), KM_SLEEP); 790 791 for (i = 0; i < dss_npaths; i++) { 792 sip->dss_paths[i] = rfs4_dss_newpath(sip, dss_paths[i], i); 793 } 794 795 mutex_enter(&rfs4_servinst_lock); 796 if (rfs4_cur_servinst != NULL) { 797 /* add to linked list */ 798 sip->prev = rfs4_cur_servinst; 799 rfs4_cur_servinst->next = sip; 800 } 801 if (start_grace) 802 rfs4_grace_start(sip); 803 /* make the new instance "current" */ 804 rfs4_cur_servinst = sip; 805 806 mutex_exit(&rfs4_servinst_lock); 807 } 808 809 /* 810 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 811 * all instances directly. 812 */ 813 void 814 rfs4_servinst_destroy_all(void) 815 { 816 rfs4_servinst_t *sip, *prev, *current; 817 #ifdef DEBUG 818 int n = 0; 819 #endif 820 821 mutex_enter(&rfs4_servinst_lock); 822 ASSERT(rfs4_cur_servinst != NULL); 823 current = rfs4_cur_servinst; 824 rfs4_cur_servinst = NULL; 825 for (sip = current; sip != NULL; sip = prev) { 826 prev = sip->prev; 827 rw_destroy(&sip->rwlock); 828 if (sip->oldstate) 829 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 830 if (sip->dss_paths) 831 kmem_free(sip->dss_paths, 832 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 833 kmem_free(sip, sizeof (rfs4_servinst_t)); 834 #ifdef DEBUG 835 n++; 836 #endif 837 } 838 mutex_exit(&rfs4_servinst_lock); 839 } 840 841 /* 842 * Assign the current server instance to a client_t. 843 * Should be called with cp->rc_dbe held. 844 */ 845 void 846 rfs4_servinst_assign(rfs4_client_t *cp, rfs4_servinst_t *sip) 847 { 848 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 849 850 /* 851 * The lock ensures that if the current instance is in the process 852 * of changing, we will see the new one. 853 */ 854 mutex_enter(&rfs4_servinst_lock); 855 cp->rc_server_instance = sip; 856 mutex_exit(&rfs4_servinst_lock); 857 } 858 859 rfs4_servinst_t * 860 rfs4_servinst(rfs4_client_t *cp) 861 { 862 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 863 864 return (cp->rc_server_instance); 865 } 866 867 /* ARGSUSED */ 868 static void 869 nullfree(caddr_t resop) 870 { 871 } 872 873 /* 874 * This is a fall-through for invalid or not implemented (yet) ops 875 */ 876 /* ARGSUSED */ 877 static void 878 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 879 struct compound_state *cs) 880 { 881 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 882 } 883 884 /* 885 * Check if the security flavor, nfsnum, is in the flavor_list. 886 */ 887 bool_t 888 in_flavor_list(int nfsnum, int *flavor_list, int count) 889 { 890 int i; 891 892 for (i = 0; i < count; i++) { 893 if (nfsnum == flavor_list[i]) 894 return (TRUE); 895 } 896 return (FALSE); 897 } 898 899 /* 900 * Used by rfs4_op_secinfo to get the security information from the 901 * export structure associated with the component. 902 */ 903 /* ARGSUSED */ 904 static nfsstat4 905 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 906 { 907 int error, different_export = 0; 908 vnode_t *dvp, *vp; 909 struct exportinfo *exi = NULL; 910 fid_t fid; 911 uint_t count, i; 912 secinfo4 *resok_val; 913 struct secinfo *secp; 914 seconfig_t *si; 915 bool_t did_traverse = FALSE; 916 int dotdot, walk; 917 918 dvp = cs->vp; 919 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 920 921 /* 922 * If dotdotting, then need to check whether it's above the 923 * root of a filesystem, or above an export point. 924 */ 925 if (dotdot) { 926 927 /* 928 * If dotdotting at the root of a filesystem, then 929 * need to traverse back to the mounted-on filesystem 930 * and do the dotdot lookup there. 931 */ 932 if (cs->vp->v_flag & VROOT) { 933 934 /* 935 * If at the system root, then can 936 * go up no further. 937 */ 938 if (VN_CMP(dvp, rootdir)) 939 return (puterrno4(ENOENT)); 940 941 /* 942 * Traverse back to the mounted-on filesystem 943 */ 944 dvp = untraverse(cs->vp); 945 946 /* 947 * Set the different_export flag so we remember 948 * to pick up a new exportinfo entry for 949 * this new filesystem. 950 */ 951 different_export = 1; 952 } else { 953 954 /* 955 * If dotdotting above an export point then set 956 * the different_export to get new export info. 957 */ 958 different_export = nfs_exported(cs->exi, cs->vp); 959 } 960 } 961 962 /* 963 * Get the vnode for the component "nm". 964 */ 965 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 966 NULL, NULL, NULL); 967 if (error) 968 return (puterrno4(error)); 969 970 /* 971 * If the vnode is in a pseudo filesystem, or if the security flavor 972 * used in the request is valid but not an explicitly shared flavor, 973 * or the access bit indicates that this is a limited access, 974 * check whether this vnode is visible. 975 */ 976 if (!different_export && 977 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 978 cs->access & CS_ACCESS_LIMITED)) { 979 if (! nfs_visible(cs->exi, vp, &different_export)) { 980 VN_RELE(vp); 981 return (puterrno4(ENOENT)); 982 } 983 } 984 985 /* 986 * If it's a mountpoint, then traverse it. 987 */ 988 if (vn_ismntpt(vp)) { 989 if ((error = traverse(&vp)) != 0) { 990 VN_RELE(vp); 991 return (puterrno4(error)); 992 } 993 /* remember that we had to traverse mountpoint */ 994 did_traverse = TRUE; 995 different_export = 1; 996 } else if (vp->v_vfsp != dvp->v_vfsp) { 997 /* 998 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 999 * then vp is probably an LOFS object. We don't need the 1000 * realvp, we just need to know that we might have crossed 1001 * a server fs boundary and need to call checkexport4. 1002 * (LOFS lookup hides server fs mountpoints, and actually calls 1003 * traverse) 1004 */ 1005 different_export = 1; 1006 } 1007 1008 /* 1009 * Get the export information for it. 1010 */ 1011 if (different_export) { 1012 1013 bzero(&fid, sizeof (fid)); 1014 fid.fid_len = MAXFIDSZ; 1015 error = vop_fid_pseudo(vp, &fid); 1016 if (error) { 1017 VN_RELE(vp); 1018 return (puterrno4(error)); 1019 } 1020 1021 if (dotdot) 1022 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 1023 else 1024 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 1025 1026 if (exi == NULL) { 1027 if (did_traverse == TRUE) { 1028 /* 1029 * If this vnode is a mounted-on vnode, 1030 * but the mounted-on file system is not 1031 * exported, send back the secinfo for 1032 * the exported node that the mounted-on 1033 * vnode lives in. 1034 */ 1035 exi = cs->exi; 1036 } else { 1037 VN_RELE(vp); 1038 return (puterrno4(EACCES)); 1039 } 1040 } 1041 } else { 1042 exi = cs->exi; 1043 } 1044 ASSERT(exi != NULL); 1045 1046 1047 /* 1048 * Create the secinfo result based on the security information 1049 * from the exportinfo structure (exi). 1050 * 1051 * Return all flavors for a pseudo node. 1052 * For a real export node, return the flavor that the client 1053 * has access with. 1054 */ 1055 ASSERT(RW_LOCK_HELD(&exported_lock)); 1056 if (PSEUDO(exi)) { 1057 count = exi->exi_export.ex_seccnt; /* total sec count */ 1058 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1059 secp = exi->exi_export.ex_secinfo; 1060 1061 for (i = 0; i < count; i++) { 1062 si = &secp[i].s_secinfo; 1063 resok_val[i].flavor = si->sc_rpcnum; 1064 if (resok_val[i].flavor == RPCSEC_GSS) { 1065 rpcsec_gss_info *info; 1066 1067 info = &resok_val[i].flavor_info; 1068 info->qop = si->sc_qop; 1069 info->service = (rpc_gss_svc_t)si->sc_service; 1070 1071 /* get oid opaque data */ 1072 info->oid.sec_oid4_len = 1073 si->sc_gss_mech_type->length; 1074 info->oid.sec_oid4_val = kmem_alloc( 1075 si->sc_gss_mech_type->length, KM_SLEEP); 1076 bcopy( 1077 si->sc_gss_mech_type->elements, 1078 info->oid.sec_oid4_val, 1079 info->oid.sec_oid4_len); 1080 } 1081 } 1082 resp->SECINFO4resok_len = count; 1083 resp->SECINFO4resok_val = resok_val; 1084 } else { 1085 int ret_cnt = 0, k = 0; 1086 int *flavor_list; 1087 1088 count = exi->exi_export.ex_seccnt; /* total sec count */ 1089 secp = exi->exi_export.ex_secinfo; 1090 1091 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1092 /* find out which flavors to return */ 1093 for (i = 0; i < count; i ++) { 1094 int access, flavor, perm; 1095 1096 flavor = secp[i].s_secinfo.sc_nfsnum; 1097 perm = secp[i].s_flags; 1098 1099 access = nfsauth4_secinfo_access(exi, cs->req, 1100 flavor, perm, cs->basecr); 1101 1102 if (! (access & NFSAUTH_DENIED) && 1103 ! (access & NFSAUTH_WRONGSEC)) { 1104 flavor_list[ret_cnt] = flavor; 1105 ret_cnt++; 1106 } 1107 } 1108 1109 /* Create the returning SECINFO value */ 1110 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1111 1112 for (i = 0; i < count; i++) { 1113 /* 1114 * If the flavor is in the flavor list, 1115 * fill in resok_val. 1116 */ 1117 si = &secp[i].s_secinfo; 1118 if (in_flavor_list(si->sc_nfsnum, 1119 flavor_list, ret_cnt)) { 1120 resok_val[k].flavor = si->sc_rpcnum; 1121 if (resok_val[k].flavor == RPCSEC_GSS) { 1122 rpcsec_gss_info *info; 1123 1124 info = &resok_val[k].flavor_info; 1125 info->qop = si->sc_qop; 1126 info->service = (rpc_gss_svc_t) 1127 si->sc_service; 1128 1129 /* get oid opaque data */ 1130 info->oid.sec_oid4_len = 1131 si->sc_gss_mech_type->length; 1132 info->oid.sec_oid4_val = kmem_alloc( 1133 si->sc_gss_mech_type->length, 1134 KM_SLEEP); 1135 bcopy(si->sc_gss_mech_type->elements, 1136 info->oid.sec_oid4_val, 1137 info->oid.sec_oid4_len); 1138 } 1139 k++; 1140 } 1141 if (k >= ret_cnt) 1142 break; 1143 } 1144 resp->SECINFO4resok_len = ret_cnt; 1145 resp->SECINFO4resok_val = resok_val; 1146 kmem_free(flavor_list, count * sizeof (int)); 1147 } 1148 1149 VN_RELE(vp); 1150 return (NFS4_OK); 1151 } 1152 1153 /* 1154 * SECINFO (Operation 33): Obtain required security information on 1155 * the component name in the format of (security-mechanism-oid, qop, service) 1156 * triplets. 1157 */ 1158 /* ARGSUSED */ 1159 static void 1160 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1161 struct compound_state *cs) 1162 { 1163 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; 1164 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1165 utf8string *utfnm = &args->name; 1166 uint_t len; 1167 char *nm; 1168 struct sockaddr *ca; 1169 char *name = NULL; 1170 nfsstat4 status = NFS4_OK; 1171 1172 DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs, 1173 SECINFO4args *, args); 1174 1175 /* 1176 * Current file handle (cfh) should have been set before getting 1177 * into this function. If not, return error. 1178 */ 1179 if (cs->vp == NULL) { 1180 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1181 goto out; 1182 } 1183 1184 if (cs->vp->v_type != VDIR) { 1185 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1186 goto out; 1187 } 1188 1189 /* 1190 * Verify the component name. If failed, error out, but 1191 * do not error out if the component name is a "..". 1192 * SECINFO will return its parents secinfo data for SECINFO "..". 1193 */ 1194 status = utf8_dir_verify(utfnm); 1195 if (status != NFS4_OK) { 1196 if (utfnm->utf8string_len != 2 || 1197 utfnm->utf8string_val[0] != '.' || 1198 utfnm->utf8string_val[1] != '.') { 1199 *cs->statusp = resp->status = status; 1200 goto out; 1201 } 1202 } 1203 1204 nm = utf8_to_str(utfnm, &len, NULL); 1205 if (nm == NULL) { 1206 *cs->statusp = resp->status = NFS4ERR_INVAL; 1207 goto out; 1208 } 1209 1210 if (len > MAXNAMELEN) { 1211 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1212 kmem_free(nm, len); 1213 goto out; 1214 } 1215 1216 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1217 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1218 MAXPATHLEN + 1); 1219 1220 if (name == NULL) { 1221 *cs->statusp = resp->status = NFS4ERR_INVAL; 1222 kmem_free(nm, len); 1223 goto out; 1224 } 1225 1226 1227 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp); 1228 1229 if (name != nm) 1230 kmem_free(name, MAXPATHLEN + 1); 1231 kmem_free(nm, len); 1232 1233 out: 1234 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, 1235 SECINFO4res *, resp); 1236 } 1237 1238 /* 1239 * Free SECINFO result. 1240 */ 1241 /* ARGSUSED */ 1242 static void 1243 rfs4_op_secinfo_free(nfs_resop4 *resop) 1244 { 1245 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1246 int count, i; 1247 secinfo4 *resok_val; 1248 1249 /* If this is not an Ok result, nothing to free. */ 1250 if (resp->status != NFS4_OK) { 1251 return; 1252 } 1253 1254 count = resp->SECINFO4resok_len; 1255 resok_val = resp->SECINFO4resok_val; 1256 1257 for (i = 0; i < count; i++) { 1258 if (resok_val[i].flavor == RPCSEC_GSS) { 1259 rpcsec_gss_info *info; 1260 1261 info = &resok_val[i].flavor_info; 1262 kmem_free(info->oid.sec_oid4_val, 1263 info->oid.sec_oid4_len); 1264 } 1265 } 1266 kmem_free(resok_val, count * sizeof (secinfo4)); 1267 resp->SECINFO4resok_len = 0; 1268 resp->SECINFO4resok_val = NULL; 1269 } 1270 1271 /* ARGSUSED */ 1272 static void 1273 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1274 struct compound_state *cs) 1275 { 1276 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1277 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1278 int error; 1279 vnode_t *vp; 1280 struct vattr va; 1281 int checkwriteperm; 1282 cred_t *cr = cs->cr; 1283 bslabel_t *clabel, *slabel; 1284 ts_label_t *tslabel; 1285 boolean_t admin_low_client; 1286 1287 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, 1288 ACCESS4args *, args); 1289 1290 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1291 if (cs->access == CS_ACCESS_DENIED) { 1292 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1293 goto out; 1294 } 1295 #endif 1296 if (cs->vp == NULL) { 1297 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1298 goto out; 1299 } 1300 1301 ASSERT(cr != NULL); 1302 1303 vp = cs->vp; 1304 1305 /* 1306 * If the file system is exported read only, it is not appropriate 1307 * to check write permissions for regular files and directories. 1308 * Special files are interpreted by the client, so the underlying 1309 * permissions are sent back to the client for interpretation. 1310 */ 1311 if (rdonly4(req, cs) && 1312 (vp->v_type == VREG || vp->v_type == VDIR)) 1313 checkwriteperm = 0; 1314 else 1315 checkwriteperm = 1; 1316 1317 /* 1318 * XXX 1319 * We need the mode so that we can correctly determine access 1320 * permissions relative to a mandatory lock file. Access to 1321 * mandatory lock files is denied on the server, so it might 1322 * as well be reflected to the server during the open. 1323 */ 1324 va.va_mask = AT_MODE; 1325 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1326 if (error) { 1327 *cs->statusp = resp->status = puterrno4(error); 1328 goto out; 1329 } 1330 resp->access = 0; 1331 resp->supported = 0; 1332 1333 if (is_system_labeled()) { 1334 ASSERT(req->rq_label != NULL); 1335 clabel = req->rq_label; 1336 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1337 "got client label from request(1)", 1338 struct svc_req *, req); 1339 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1340 if ((tslabel = nfs_getflabel(vp, cs->exi)) == NULL) { 1341 *cs->statusp = resp->status = puterrno4(EACCES); 1342 goto out; 1343 } 1344 slabel = label2bslabel(tslabel); 1345 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1346 char *, "got server label(1) for vp(2)", 1347 bslabel_t *, slabel, vnode_t *, vp); 1348 1349 admin_low_client = B_FALSE; 1350 } else 1351 admin_low_client = B_TRUE; 1352 } 1353 1354 if (args->access & ACCESS4_READ) { 1355 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); 1356 if (!error && !MANDLOCK(vp, va.va_mode) && 1357 (!is_system_labeled() || admin_low_client || 1358 bldominates(clabel, slabel))) 1359 resp->access |= ACCESS4_READ; 1360 resp->supported |= ACCESS4_READ; 1361 } 1362 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1363 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1364 if (!error && (!is_system_labeled() || admin_low_client || 1365 bldominates(clabel, slabel))) 1366 resp->access |= ACCESS4_LOOKUP; 1367 resp->supported |= ACCESS4_LOOKUP; 1368 } 1369 if (checkwriteperm && 1370 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1371 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1372 if (!error && !MANDLOCK(vp, va.va_mode) && 1373 (!is_system_labeled() || admin_low_client || 1374 blequal(clabel, slabel))) 1375 resp->access |= 1376 (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND)); 1377 resp->supported |= 1378 resp->access & (ACCESS4_MODIFY | ACCESS4_EXTEND); 1379 } 1380 1381 if (checkwriteperm && 1382 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1383 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1384 if (!error && (!is_system_labeled() || admin_low_client || 1385 blequal(clabel, slabel))) 1386 resp->access |= ACCESS4_DELETE; 1387 resp->supported |= ACCESS4_DELETE; 1388 } 1389 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1390 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1391 if (!error && !MANDLOCK(vp, va.va_mode) && 1392 (!is_system_labeled() || admin_low_client || 1393 bldominates(clabel, slabel))) 1394 resp->access |= ACCESS4_EXECUTE; 1395 resp->supported |= ACCESS4_EXECUTE; 1396 } 1397 1398 if (is_system_labeled() && !admin_low_client) 1399 label_rele(tslabel); 1400 1401 *cs->statusp = resp->status = NFS4_OK; 1402 out: 1403 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1404 ACCESS4res *, resp); 1405 } 1406 1407 /* ARGSUSED */ 1408 static void 1409 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1410 struct compound_state *cs) 1411 { 1412 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1413 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1414 int error; 1415 vnode_t *vp = cs->vp; 1416 cred_t *cr = cs->cr; 1417 vattr_t va; 1418 1419 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1420 COMMIT4args *, args); 1421 1422 if (vp == NULL) { 1423 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1424 goto out; 1425 } 1426 if (cs->access == CS_ACCESS_DENIED) { 1427 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1428 goto out; 1429 } 1430 1431 if (args->offset + args->count < args->offset) { 1432 *cs->statusp = resp->status = NFS4ERR_INVAL; 1433 goto out; 1434 } 1435 1436 va.va_mask = AT_UID; 1437 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1438 1439 /* 1440 * If we can't get the attributes, then we can't do the 1441 * right access checking. So, we'll fail the request. 1442 */ 1443 if (error) { 1444 *cs->statusp = resp->status = puterrno4(error); 1445 goto out; 1446 } 1447 if (rdonly4(req, cs)) { 1448 *cs->statusp = resp->status = NFS4ERR_ROFS; 1449 goto out; 1450 } 1451 1452 if (vp->v_type != VREG) { 1453 if (vp->v_type == VDIR) 1454 resp->status = NFS4ERR_ISDIR; 1455 else 1456 resp->status = NFS4ERR_INVAL; 1457 *cs->statusp = resp->status; 1458 goto out; 1459 } 1460 1461 if (crgetuid(cr) != va.va_uid && 1462 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1463 *cs->statusp = resp->status = puterrno4(error); 1464 goto out; 1465 } 1466 1467 error = VOP_FSYNC(vp, FSYNC, cr, NULL); 1468 1469 if (error) { 1470 *cs->statusp = resp->status = puterrno4(error); 1471 goto out; 1472 } 1473 1474 *cs->statusp = resp->status = NFS4_OK; 1475 resp->writeverf = Write4verf; 1476 out: 1477 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1478 COMMIT4res *, resp); 1479 } 1480 1481 /* 1482 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1483 * was completed. It does the nfsv4 create for special files. 1484 */ 1485 /* ARGSUSED */ 1486 static vnode_t * 1487 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1488 struct compound_state *cs, vattr_t *vap, char *nm) 1489 { 1490 int error; 1491 cred_t *cr = cs->cr; 1492 vnode_t *dvp = cs->vp; 1493 vnode_t *vp = NULL; 1494 int mode; 1495 enum vcexcl excl; 1496 1497 switch (args->type) { 1498 case NF4CHR: 1499 case NF4BLK: 1500 if (secpolicy_sys_devices(cr) != 0) { 1501 *cs->statusp = resp->status = NFS4ERR_PERM; 1502 return (NULL); 1503 } 1504 if (args->type == NF4CHR) 1505 vap->va_type = VCHR; 1506 else 1507 vap->va_type = VBLK; 1508 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1509 args->ftype4_u.devdata.specdata2); 1510 vap->va_mask |= AT_RDEV; 1511 break; 1512 case NF4SOCK: 1513 vap->va_type = VSOCK; 1514 break; 1515 case NF4FIFO: 1516 vap->va_type = VFIFO; 1517 break; 1518 default: 1519 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1520 return (NULL); 1521 } 1522 1523 /* 1524 * Must specify the mode. 1525 */ 1526 if (!(vap->va_mask & AT_MODE)) { 1527 *cs->statusp = resp->status = NFS4ERR_INVAL; 1528 return (NULL); 1529 } 1530 1531 excl = EXCL; 1532 1533 mode = 0; 1534 1535 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1536 if (error) { 1537 *cs->statusp = resp->status = puterrno4(error); 1538 return (NULL); 1539 } 1540 return (vp); 1541 } 1542 1543 /* 1544 * nfsv4 create is used to create non-regular files. For regular files, 1545 * use nfsv4 open. 1546 */ 1547 /* ARGSUSED */ 1548 static void 1549 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1550 struct compound_state *cs) 1551 { 1552 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1553 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1554 int error; 1555 struct vattr bva, iva, iva2, ava, *vap; 1556 cred_t *cr = cs->cr; 1557 vnode_t *dvp = cs->vp; 1558 vnode_t *vp = NULL; 1559 vnode_t *realvp; 1560 char *nm, *lnm; 1561 uint_t len, llen; 1562 int syncval = 0; 1563 struct nfs4_svgetit_arg sarg; 1564 struct nfs4_ntov_table ntov; 1565 struct statvfs64 sb; 1566 nfsstat4 status; 1567 struct sockaddr *ca; 1568 char *name = NULL; 1569 char *lname = NULL; 1570 1571 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1572 CREATE4args *, args); 1573 1574 resp->attrset = 0; 1575 1576 if (dvp == NULL) { 1577 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1578 goto out; 1579 } 1580 1581 /* 1582 * If there is an unshared filesystem mounted on this vnode, 1583 * do not allow to create an object in this directory. 1584 */ 1585 if (vn_ismntpt(dvp)) { 1586 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1587 goto out; 1588 } 1589 1590 /* Verify that type is correct */ 1591 switch (args->type) { 1592 case NF4LNK: 1593 case NF4BLK: 1594 case NF4CHR: 1595 case NF4SOCK: 1596 case NF4FIFO: 1597 case NF4DIR: 1598 break; 1599 default: 1600 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1601 goto out; 1602 }; 1603 1604 if (cs->access == CS_ACCESS_DENIED) { 1605 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1606 goto out; 1607 } 1608 if (dvp->v_type != VDIR) { 1609 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1610 goto out; 1611 } 1612 status = utf8_dir_verify(&args->objname); 1613 if (status != NFS4_OK) { 1614 *cs->statusp = resp->status = status; 1615 goto out; 1616 } 1617 1618 if (rdonly4(req, cs)) { 1619 *cs->statusp = resp->status = NFS4ERR_ROFS; 1620 goto out; 1621 } 1622 1623 /* 1624 * Name of newly created object 1625 */ 1626 nm = utf8_to_fn(&args->objname, &len, NULL); 1627 if (nm == NULL) { 1628 *cs->statusp = resp->status = NFS4ERR_INVAL; 1629 goto out; 1630 } 1631 1632 if (len > MAXNAMELEN) { 1633 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1634 kmem_free(nm, len); 1635 goto out; 1636 } 1637 1638 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1639 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1640 MAXPATHLEN + 1); 1641 1642 if (name == NULL) { 1643 *cs->statusp = resp->status = NFS4ERR_INVAL; 1644 kmem_free(nm, len); 1645 goto out; 1646 } 1647 1648 resp->attrset = 0; 1649 1650 sarg.sbp = &sb; 1651 sarg.is_referral = B_FALSE; 1652 nfs4_ntov_table_init(&ntov); 1653 1654 status = do_rfs4_set_attrs(&resp->attrset, 1655 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1656 1657 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1658 status = NFS4ERR_INVAL; 1659 1660 if (status != NFS4_OK) { 1661 *cs->statusp = resp->status = status; 1662 if (name != nm) 1663 kmem_free(name, MAXPATHLEN + 1); 1664 kmem_free(nm, len); 1665 nfs4_ntov_table_free(&ntov, &sarg); 1666 resp->attrset = 0; 1667 goto out; 1668 } 1669 1670 /* Get "before" change value */ 1671 bva.va_mask = AT_CTIME|AT_SEQ|AT_MODE; 1672 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1673 if (error) { 1674 *cs->statusp = resp->status = puterrno4(error); 1675 if (name != nm) 1676 kmem_free(name, MAXPATHLEN + 1); 1677 kmem_free(nm, len); 1678 nfs4_ntov_table_free(&ntov, &sarg); 1679 resp->attrset = 0; 1680 goto out; 1681 } 1682 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1683 1684 vap = sarg.vap; 1685 1686 /* 1687 * Set the default initial values for attributes when the parent 1688 * directory does not have the VSUID/VSGID bit set and they have 1689 * not been specified in createattrs. 1690 */ 1691 if (!(bva.va_mode & VSUID) && (vap->va_mask & AT_UID) == 0) { 1692 vap->va_uid = crgetuid(cr); 1693 vap->va_mask |= AT_UID; 1694 } 1695 if (!(bva.va_mode & VSGID) && (vap->va_mask & AT_GID) == 0) { 1696 vap->va_gid = crgetgid(cr); 1697 vap->va_mask |= AT_GID; 1698 } 1699 1700 vap->va_mask |= AT_TYPE; 1701 switch (args->type) { 1702 case NF4DIR: 1703 vap->va_type = VDIR; 1704 if ((vap->va_mask & AT_MODE) == 0) { 1705 vap->va_mode = 0700; /* default: owner rwx only */ 1706 vap->va_mask |= AT_MODE; 1707 } 1708 error = VOP_MKDIR(dvp, name, vap, &vp, cr, NULL, 0, NULL); 1709 if (error) 1710 break; 1711 1712 /* 1713 * Get the initial "after" sequence number, if it fails, 1714 * set to zero 1715 */ 1716 iva.va_mask = AT_SEQ; 1717 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1718 iva.va_seq = 0; 1719 break; 1720 case NF4LNK: 1721 vap->va_type = VLNK; 1722 if ((vap->va_mask & AT_MODE) == 0) { 1723 vap->va_mode = 0700; /* default: owner rwx only */ 1724 vap->va_mask |= AT_MODE; 1725 } 1726 1727 /* 1728 * symlink names must be treated as data 1729 */ 1730 lnm = utf8_to_str((utf8string *)&args->ftype4_u.linkdata, 1731 &llen, NULL); 1732 1733 if (lnm == NULL) { 1734 *cs->statusp = resp->status = NFS4ERR_INVAL; 1735 if (name != nm) 1736 kmem_free(name, MAXPATHLEN + 1); 1737 kmem_free(nm, len); 1738 nfs4_ntov_table_free(&ntov, &sarg); 1739 resp->attrset = 0; 1740 goto out; 1741 } 1742 1743 if (llen > MAXPATHLEN) { 1744 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1745 if (name != nm) 1746 kmem_free(name, MAXPATHLEN + 1); 1747 kmem_free(nm, len); 1748 kmem_free(lnm, llen); 1749 nfs4_ntov_table_free(&ntov, &sarg); 1750 resp->attrset = 0; 1751 goto out; 1752 } 1753 1754 lname = nfscmd_convname(ca, cs->exi, lnm, 1755 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); 1756 1757 if (lname == NULL) { 1758 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 1759 if (name != nm) 1760 kmem_free(name, MAXPATHLEN + 1); 1761 kmem_free(nm, len); 1762 kmem_free(lnm, llen); 1763 nfs4_ntov_table_free(&ntov, &sarg); 1764 resp->attrset = 0; 1765 goto out; 1766 } 1767 1768 error = VOP_SYMLINK(dvp, name, vap, lname, cr, NULL, 0); 1769 if (lname != lnm) 1770 kmem_free(lname, MAXPATHLEN + 1); 1771 kmem_free(lnm, llen); 1772 if (error) 1773 break; 1774 1775 /* 1776 * Get the initial "after" sequence number, if it fails, 1777 * set to zero 1778 */ 1779 iva.va_mask = AT_SEQ; 1780 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1781 iva.va_seq = 0; 1782 1783 error = VOP_LOOKUP(dvp, name, &vp, NULL, 0, NULL, cr, 1784 NULL, NULL, NULL); 1785 if (error) 1786 break; 1787 1788 /* 1789 * va_seq is not safe over VOP calls, check it again 1790 * if it has changed zero out iva to force atomic = FALSE. 1791 */ 1792 iva2.va_mask = AT_SEQ; 1793 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 1794 iva2.va_seq != iva.va_seq) 1795 iva.va_seq = 0; 1796 break; 1797 default: 1798 /* 1799 * probably a special file. 1800 */ 1801 if ((vap->va_mask & AT_MODE) == 0) { 1802 vap->va_mode = 0600; /* default: owner rw only */ 1803 vap->va_mask |= AT_MODE; 1804 } 1805 syncval = FNODSYNC; 1806 /* 1807 * We know this will only generate one VOP call 1808 */ 1809 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, name); 1810 1811 if (vp == NULL) { 1812 if (name != nm) 1813 kmem_free(name, MAXPATHLEN + 1); 1814 kmem_free(nm, len); 1815 nfs4_ntov_table_free(&ntov, &sarg); 1816 resp->attrset = 0; 1817 goto out; 1818 } 1819 1820 /* 1821 * Get the initial "after" sequence number, if it fails, 1822 * set to zero 1823 */ 1824 iva.va_mask = AT_SEQ; 1825 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1826 iva.va_seq = 0; 1827 1828 break; 1829 } 1830 if (name != nm) 1831 kmem_free(name, MAXPATHLEN + 1); 1832 kmem_free(nm, len); 1833 1834 if (error) { 1835 *cs->statusp = resp->status = puterrno4(error); 1836 } 1837 1838 /* 1839 * Force modified data and metadata out to stable storage. 1840 */ 1841 (void) VOP_FSYNC(dvp, 0, cr, NULL); 1842 1843 if (resp->status != NFS4_OK) { 1844 if (vp != NULL) 1845 VN_RELE(vp); 1846 nfs4_ntov_table_free(&ntov, &sarg); 1847 resp->attrset = 0; 1848 goto out; 1849 } 1850 1851 /* 1852 * Finish setup of cinfo response, "before" value already set. 1853 * Get "after" change value, if it fails, simply return the 1854 * before value. 1855 */ 1856 ava.va_mask = AT_CTIME|AT_SEQ; 1857 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 1858 ava.va_ctime = bva.va_ctime; 1859 ava.va_seq = 0; 1860 } 1861 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1862 1863 /* 1864 * True verification that object was created with correct 1865 * attrs is impossible. The attrs could have been changed 1866 * immediately after object creation. If attributes did 1867 * not verify, the only recourse for the server is to 1868 * destroy the object. Maybe if some attrs (like gid) 1869 * are set incorrectly, the object should be destroyed; 1870 * however, seems bad as a default policy. Do we really 1871 * want to destroy an object over one of the times not 1872 * verifying correctly? For these reasons, the server 1873 * currently sets bits in attrset for createattrs 1874 * that were set; however, no verification is done. 1875 * 1876 * vmask_to_nmask accounts for vattr bits set on create 1877 * [do_rfs4_set_attrs() only sets resp bits for 1878 * non-vattr/vfs bits.] 1879 * Mask off any bits set by default so as not to return 1880 * more attrset bits than were requested in createattrs 1881 */ 1882 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1883 resp->attrset &= args->createattrs.attrmask; 1884 nfs4_ntov_table_free(&ntov, &sarg); 1885 1886 error = makefh4(&cs->fh, vp, cs->exi); 1887 if (error) { 1888 *cs->statusp = resp->status = puterrno4(error); 1889 } 1890 1891 /* 1892 * The cinfo.atomic = TRUE only if we got no errors, we have 1893 * non-zero va_seq's, and it has incremented by exactly one 1894 * during the creation and it didn't change during the VOP_LOOKUP 1895 * or VOP_FSYNC. 1896 */ 1897 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1898 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 1899 resp->cinfo.atomic = TRUE; 1900 else 1901 resp->cinfo.atomic = FALSE; 1902 1903 /* 1904 * Force modified metadata out to stable storage. 1905 * 1906 * if a underlying vp exists, pass it to VOP_FSYNC 1907 */ 1908 if (VOP_REALVP(vp, &realvp, NULL) == 0) 1909 (void) VOP_FSYNC(realvp, syncval, cr, NULL); 1910 else 1911 (void) VOP_FSYNC(vp, syncval, cr, NULL); 1912 1913 if (resp->status != NFS4_OK) { 1914 VN_RELE(vp); 1915 goto out; 1916 } 1917 if (cs->vp) 1918 VN_RELE(cs->vp); 1919 1920 cs->vp = vp; 1921 *cs->statusp = resp->status = NFS4_OK; 1922 out: 1923 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 1924 CREATE4res *, resp); 1925 } 1926 1927 /*ARGSUSED*/ 1928 static void 1929 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1930 struct compound_state *cs) 1931 { 1932 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 1933 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 1934 1935 rfs4_op_inval(argop, resop, req, cs); 1936 1937 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 1938 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 1939 } 1940 1941 /*ARGSUSED*/ 1942 static void 1943 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1944 struct compound_state *cs) 1945 { 1946 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 1947 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 1948 rfs4_deleg_state_t *dsp; 1949 nfsstat4 status; 1950 1951 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 1952 DELEGRETURN4args *, args); 1953 1954 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 1955 resp->status = *cs->statusp = status; 1956 if (status != NFS4_OK) 1957 goto out; 1958 1959 /* Ensure specified filehandle matches */ 1960 if (cs->vp != dsp->rds_finfo->rf_vp) { 1961 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 1962 } else 1963 rfs4_return_deleg(dsp, FALSE); 1964 1965 rfs4_update_lease(dsp->rds_client); 1966 1967 rfs4_deleg_state_rele(dsp); 1968 out: 1969 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 1970 DELEGRETURN4res *, resp); 1971 } 1972 1973 /* 1974 * Check to see if a given "flavor" is an explicitly shared flavor. 1975 * The assumption of this routine is the "flavor" is already a valid 1976 * flavor in the secinfo list of "exi". 1977 * 1978 * e.g. 1979 * # share -o sec=flavor1 /export 1980 * # share -o sec=flavor2 /export/home 1981 * 1982 * flavor2 is not an explicitly shared flavor for /export, 1983 * however it is in the secinfo list for /export thru the 1984 * server namespace setup. 1985 */ 1986 int 1987 is_exported_sec(int flavor, struct exportinfo *exi) 1988 { 1989 int i; 1990 struct secinfo *sp; 1991 1992 sp = exi->exi_export.ex_secinfo; 1993 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 1994 if (flavor == sp[i].s_secinfo.sc_nfsnum || 1995 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 1996 return (SEC_REF_EXPORTED(&sp[i])); 1997 } 1998 } 1999 2000 /* Should not reach this point based on the assumption */ 2001 return (0); 2002 } 2003 2004 /* 2005 * Check if the security flavor used in the request matches what is 2006 * required at the export point or at the root pseudo node (exi_root). 2007 * 2008 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 2009 * 2010 */ 2011 static int 2012 secinfo_match_or_authnone(struct compound_state *cs) 2013 { 2014 int i; 2015 struct secinfo *sp; 2016 2017 /* 2018 * Check cs->nfsflavor (from the request) against 2019 * the current export data in cs->exi. 2020 */ 2021 sp = cs->exi->exi_export.ex_secinfo; 2022 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 2023 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 2024 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 2025 return (1); 2026 } 2027 2028 return (0); 2029 } 2030 2031 /* 2032 * Check the access authority for the client and return the correct error. 2033 */ 2034 nfsstat4 2035 call_checkauth4(struct compound_state *cs, struct svc_req *req) 2036 { 2037 int authres; 2038 2039 /* 2040 * First, check if the security flavor used in the request 2041 * are among the flavors set in the server namespace. 2042 */ 2043 if (!secinfo_match_or_authnone(cs)) { 2044 *cs->statusp = NFS4ERR_WRONGSEC; 2045 return (*cs->statusp); 2046 } 2047 2048 authres = checkauth4(cs, req); 2049 2050 if (authres > 0) { 2051 *cs->statusp = NFS4_OK; 2052 if (! (cs->access & CS_ACCESS_LIMITED)) 2053 cs->access = CS_ACCESS_OK; 2054 } else if (authres == 0) { 2055 *cs->statusp = NFS4ERR_ACCESS; 2056 } else if (authres == -2) { 2057 *cs->statusp = NFS4ERR_WRONGSEC; 2058 } else { 2059 *cs->statusp = NFS4ERR_DELAY; 2060 } 2061 return (*cs->statusp); 2062 } 2063 2064 /* 2065 * bitmap4_to_attrmask is called by getattr and readdir. 2066 * It sets up the vattr mask and determines whether vfsstat call is needed 2067 * based on the input bitmap. 2068 * Returns nfsv4 status. 2069 */ 2070 static nfsstat4 2071 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 2072 { 2073 int i; 2074 uint_t va_mask; 2075 struct statvfs64 *sbp = sargp->sbp; 2076 2077 sargp->sbp = NULL; 2078 sargp->flag = 0; 2079 sargp->rdattr_error = NFS4_OK; 2080 sargp->mntdfid_set = FALSE; 2081 if (sargp->cs->vp) 2082 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 2083 FH4_ATTRDIR | FH4_NAMEDATTR); 2084 else 2085 sargp->xattr = 0; 2086 2087 /* 2088 * Set rdattr_error_req to true if return error per 2089 * failed entry rather than fail the readdir. 2090 */ 2091 if (breq & FATTR4_RDATTR_ERROR_MASK) 2092 sargp->rdattr_error_req = 1; 2093 else 2094 sargp->rdattr_error_req = 0; 2095 2096 /* 2097 * generate the va_mask 2098 * Handle the easy cases first 2099 */ 2100 switch (breq) { 2101 case NFS4_NTOV_ATTR_MASK: 2102 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 2103 return (NFS4_OK); 2104 2105 case NFS4_FS_ATTR_MASK: 2106 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2107 sargp->sbp = sbp; 2108 return (NFS4_OK); 2109 2110 case NFS4_NTOV_ATTR_CACHE_MASK: 2111 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2112 return (NFS4_OK); 2113 2114 case FATTR4_LEASE_TIME_MASK: 2115 sargp->vap->va_mask = 0; 2116 return (NFS4_OK); 2117 2118 default: 2119 va_mask = 0; 2120 for (i = 0; i < nfs4_ntov_map_size; i++) { 2121 if ((breq & nfs4_ntov_map[i].fbit) && 2122 nfs4_ntov_map[i].vbit) 2123 va_mask |= nfs4_ntov_map[i].vbit; 2124 } 2125 2126 /* 2127 * Check is vfsstat is needed 2128 */ 2129 if (breq & NFS4_FS_ATTR_MASK) 2130 sargp->sbp = sbp; 2131 2132 sargp->vap->va_mask = va_mask; 2133 return (NFS4_OK); 2134 } 2135 /* NOTREACHED */ 2136 } 2137 2138 /* 2139 * bitmap4_get_sysattrs is called by getattr and readdir. 2140 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2141 * Returns nfsv4 status. 2142 */ 2143 static nfsstat4 2144 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2145 { 2146 int error; 2147 struct compound_state *cs = sargp->cs; 2148 vnode_t *vp = cs->vp; 2149 2150 if (sargp->sbp != NULL) { 2151 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2152 sargp->sbp = NULL; /* to identify error */ 2153 return (puterrno4(error)); 2154 } 2155 } 2156 2157 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2158 } 2159 2160 static void 2161 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2162 { 2163 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2164 KM_SLEEP); 2165 ntovp->attrcnt = 0; 2166 ntovp->vfsstat = FALSE; 2167 } 2168 2169 static void 2170 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2171 struct nfs4_svgetit_arg *sargp) 2172 { 2173 int i; 2174 union nfs4_attr_u *na; 2175 uint8_t *amap; 2176 2177 /* 2178 * XXX Should do the same checks for whether the bit is set 2179 */ 2180 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2181 i < ntovp->attrcnt; i++, na++, amap++) { 2182 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2183 NFS4ATTR_FREEIT, sargp, na); 2184 } 2185 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2186 /* 2187 * xdr_free for getattr will be done later 2188 */ 2189 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2190 i < ntovp->attrcnt; i++, na++, amap++) { 2191 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2192 } 2193 } 2194 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2195 } 2196 2197 /* 2198 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2199 */ 2200 static nfsstat4 2201 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2202 struct nfs4_svgetit_arg *sargp) 2203 { 2204 int error = 0; 2205 int i, k; 2206 struct nfs4_ntov_table ntov; 2207 XDR xdr; 2208 ulong_t xdr_size; 2209 char *xdr_attrs; 2210 nfsstat4 status = NFS4_OK; 2211 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2212 union nfs4_attr_u *na; 2213 uint8_t *amap; 2214 2215 sargp->op = NFS4ATTR_GETIT; 2216 sargp->flag = 0; 2217 2218 fattrp->attrmask = 0; 2219 /* if no bits requested, then return empty fattr4 */ 2220 if (breq == 0) { 2221 fattrp->attrlist4_len = 0; 2222 fattrp->attrlist4 = NULL; 2223 return (NFS4_OK); 2224 } 2225 2226 /* 2227 * return NFS4ERR_INVAL when client requests write-only attrs 2228 */ 2229 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2230 return (NFS4ERR_INVAL); 2231 2232 nfs4_ntov_table_init(&ntov); 2233 na = ntov.na; 2234 amap = ntov.amap; 2235 2236 /* 2237 * Now loop to get or verify the attrs 2238 */ 2239 for (i = 0; i < nfs4_ntov_map_size; i++) { 2240 if (breq & nfs4_ntov_map[i].fbit) { 2241 if ((*nfs4_ntov_map[i].sv_getit)( 2242 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2243 2244 error = (*nfs4_ntov_map[i].sv_getit)( 2245 NFS4ATTR_GETIT, sargp, na); 2246 2247 /* 2248 * Possible error values: 2249 * >0 if sv_getit failed to 2250 * get the attr; 0 if succeeded; 2251 * <0 if rdattr_error and the 2252 * attribute cannot be returned. 2253 */ 2254 if (error && !(sargp->rdattr_error_req)) 2255 goto done; 2256 /* 2257 * If error then just for entry 2258 */ 2259 if (error == 0) { 2260 fattrp->attrmask |= 2261 nfs4_ntov_map[i].fbit; 2262 *amap++ = 2263 (uint8_t)nfs4_ntov_map[i].nval; 2264 na++; 2265 (ntov.attrcnt)++; 2266 } else if ((error > 0) && 2267 (sargp->rdattr_error == NFS4_OK)) { 2268 sargp->rdattr_error = puterrno4(error); 2269 } 2270 error = 0; 2271 } 2272 } 2273 } 2274 2275 /* 2276 * If rdattr_error was set after the return value for it was assigned, 2277 * update it. 2278 */ 2279 if (prev_rdattr_error != sargp->rdattr_error) { 2280 na = ntov.na; 2281 amap = ntov.amap; 2282 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2283 k = *amap; 2284 if (k < FATTR4_RDATTR_ERROR) { 2285 continue; 2286 } 2287 if ((k == FATTR4_RDATTR_ERROR) && 2288 ((*nfs4_ntov_map[k].sv_getit)( 2289 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2290 2291 (void) (*nfs4_ntov_map[k].sv_getit)( 2292 NFS4ATTR_GETIT, sargp, na); 2293 } 2294 break; 2295 } 2296 } 2297 2298 xdr_size = 0; 2299 na = ntov.na; 2300 amap = ntov.amap; 2301 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2302 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2303 } 2304 2305 fattrp->attrlist4_len = xdr_size; 2306 if (xdr_size) { 2307 /* freed by rfs4_op_getattr_free() */ 2308 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2309 2310 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2311 2312 na = ntov.na; 2313 amap = ntov.amap; 2314 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2315 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2316 DTRACE_PROBE1(nfss__e__getattr4_encfail, 2317 int, *amap); 2318 status = NFS4ERR_SERVERFAULT; 2319 break; 2320 } 2321 } 2322 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2323 } else { 2324 fattrp->attrlist4 = NULL; 2325 } 2326 done: 2327 2328 nfs4_ntov_table_free(&ntov, sargp); 2329 2330 if (error != 0) 2331 status = puterrno4(error); 2332 2333 return (status); 2334 } 2335 2336 /* ARGSUSED */ 2337 static void 2338 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2339 struct compound_state *cs) 2340 { 2341 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2342 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2343 struct nfs4_svgetit_arg sarg; 2344 struct statvfs64 sb; 2345 nfsstat4 status; 2346 2347 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2348 GETATTR4args *, args); 2349 2350 if (cs->vp == NULL) { 2351 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2352 goto out; 2353 } 2354 2355 if (cs->access == CS_ACCESS_DENIED) { 2356 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2357 goto out; 2358 } 2359 2360 sarg.sbp = &sb; 2361 sarg.cs = cs; 2362 sarg.is_referral = B_FALSE; 2363 2364 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2365 if (status == NFS4_OK) { 2366 2367 status = bitmap4_get_sysattrs(&sarg); 2368 if (status == NFS4_OK) { 2369 2370 /* Is this a referral? */ 2371 if (vn_is_nfs_reparse(cs->vp, cs->cr)) { 2372 /* Older V4 Solaris client sees a link */ 2373 if (client_is_downrev(req)) 2374 sarg.vap->va_type = VLNK; 2375 else 2376 sarg.is_referral = B_TRUE; 2377 } 2378 2379 status = do_rfs4_op_getattr(args->attr_request, 2380 &resp->obj_attributes, &sarg); 2381 } 2382 } 2383 *cs->statusp = resp->status = status; 2384 out: 2385 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2386 GETATTR4res *, resp); 2387 } 2388 2389 static void 2390 rfs4_op_getattr_free(nfs_resop4 *resop) 2391 { 2392 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2393 2394 nfs4_fattr4_free(&resp->obj_attributes); 2395 } 2396 2397 /* ARGSUSED */ 2398 static void 2399 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2400 struct compound_state *cs) 2401 { 2402 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2403 2404 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2405 2406 if (cs->vp == NULL) { 2407 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2408 goto out; 2409 } 2410 if (cs->access == CS_ACCESS_DENIED) { 2411 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2412 goto out; 2413 } 2414 2415 /* check for reparse point at the share point */ 2416 if (cs->exi->exi_moved || vn_is_nfs_reparse(cs->exi->exi_vp, cs->cr)) { 2417 /* it's all bad */ 2418 cs->exi->exi_moved = 1; 2419 *cs->statusp = resp->status = NFS4ERR_MOVED; 2420 DTRACE_PROBE2(nfs4serv__func__referral__shared__moved, 2421 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2422 return; 2423 } 2424 2425 /* check for reparse point at vp */ 2426 if (vn_is_nfs_reparse(cs->vp, cs->cr) && !client_is_downrev(req)) { 2427 /* it's not all bad */ 2428 *cs->statusp = resp->status = NFS4ERR_MOVED; 2429 DTRACE_PROBE2(nfs4serv__func__referral__moved, 2430 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2431 return; 2432 } 2433 2434 resp->object.nfs_fh4_val = 2435 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2436 nfs_fh4_copy(&cs->fh, &resp->object); 2437 *cs->statusp = resp->status = NFS4_OK; 2438 out: 2439 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2440 GETFH4res *, resp); 2441 } 2442 2443 static void 2444 rfs4_op_getfh_free(nfs_resop4 *resop) 2445 { 2446 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2447 2448 if (resp->status == NFS4_OK && 2449 resp->object.nfs_fh4_val != NULL) { 2450 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2451 resp->object.nfs_fh4_val = NULL; 2452 resp->object.nfs_fh4_len = 0; 2453 } 2454 } 2455 2456 /* 2457 * illegal: args: void 2458 * res : status (NFS4ERR_OP_ILLEGAL) 2459 */ 2460 /* ARGSUSED */ 2461 static void 2462 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2463 struct svc_req *req, struct compound_state *cs) 2464 { 2465 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2466 2467 resop->resop = OP_ILLEGAL; 2468 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2469 } 2470 2471 /* 2472 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2473 * res: status. If success - CURRENT_FH unchanged, return change_info 2474 */ 2475 /* ARGSUSED */ 2476 static void 2477 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2478 struct compound_state *cs) 2479 { 2480 LINK4args *args = &argop->nfs_argop4_u.oplink; 2481 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2482 int error; 2483 vnode_t *vp; 2484 vnode_t *dvp; 2485 struct vattr bdva, idva, adva; 2486 char *nm; 2487 uint_t len; 2488 struct sockaddr *ca; 2489 char *name = NULL; 2490 nfsstat4 status; 2491 2492 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2493 LINK4args *, args); 2494 2495 /* SAVED_FH: source object */ 2496 vp = cs->saved_vp; 2497 if (vp == NULL) { 2498 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2499 goto out; 2500 } 2501 2502 /* CURRENT_FH: target directory */ 2503 dvp = cs->vp; 2504 if (dvp == NULL) { 2505 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2506 goto out; 2507 } 2508 2509 /* 2510 * If there is a non-shared filesystem mounted on this vnode, 2511 * do not allow to link any file in this directory. 2512 */ 2513 if (vn_ismntpt(dvp)) { 2514 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2515 goto out; 2516 } 2517 2518 if (cs->access == CS_ACCESS_DENIED) { 2519 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2520 goto out; 2521 } 2522 2523 /* Check source object's type validity */ 2524 if (vp->v_type == VDIR) { 2525 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2526 goto out; 2527 } 2528 2529 /* Check target directory's type */ 2530 if (dvp->v_type != VDIR) { 2531 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2532 goto out; 2533 } 2534 2535 if (cs->saved_exi != cs->exi) { 2536 *cs->statusp = resp->status = NFS4ERR_XDEV; 2537 goto out; 2538 } 2539 2540 status = utf8_dir_verify(&args->newname); 2541 if (status != NFS4_OK) { 2542 *cs->statusp = resp->status = status; 2543 goto out; 2544 } 2545 2546 nm = utf8_to_fn(&args->newname, &len, NULL); 2547 if (nm == NULL) { 2548 *cs->statusp = resp->status = NFS4ERR_INVAL; 2549 goto out; 2550 } 2551 2552 if (len > MAXNAMELEN) { 2553 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2554 kmem_free(nm, len); 2555 goto out; 2556 } 2557 2558 if (rdonly4(req, cs)) { 2559 *cs->statusp = resp->status = NFS4ERR_ROFS; 2560 kmem_free(nm, len); 2561 goto out; 2562 } 2563 2564 /* Get "before" change value */ 2565 bdva.va_mask = AT_CTIME|AT_SEQ; 2566 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2567 if (error) { 2568 *cs->statusp = resp->status = puterrno4(error); 2569 kmem_free(nm, len); 2570 goto out; 2571 } 2572 2573 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2574 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2575 MAXPATHLEN + 1); 2576 2577 if (name == NULL) { 2578 *cs->statusp = resp->status = NFS4ERR_INVAL; 2579 kmem_free(nm, len); 2580 goto out; 2581 } 2582 2583 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2584 2585 error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0); 2586 2587 if (nm != name) 2588 kmem_free(name, MAXPATHLEN + 1); 2589 kmem_free(nm, len); 2590 2591 /* 2592 * Get the initial "after" sequence number, if it fails, set to zero 2593 */ 2594 idva.va_mask = AT_SEQ; 2595 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2596 idva.va_seq = 0; 2597 2598 /* 2599 * Force modified data and metadata out to stable storage. 2600 */ 2601 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2602 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2603 2604 if (error) { 2605 *cs->statusp = resp->status = puterrno4(error); 2606 goto out; 2607 } 2608 2609 /* 2610 * Get "after" change value, if it fails, simply return the 2611 * before value. 2612 */ 2613 adva.va_mask = AT_CTIME|AT_SEQ; 2614 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2615 adva.va_ctime = bdva.va_ctime; 2616 adva.va_seq = 0; 2617 } 2618 2619 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2620 2621 /* 2622 * The cinfo.atomic = TRUE only if we have 2623 * non-zero va_seq's, and it has incremented by exactly one 2624 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2625 */ 2626 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2627 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2628 resp->cinfo.atomic = TRUE; 2629 else 2630 resp->cinfo.atomic = FALSE; 2631 2632 *cs->statusp = resp->status = NFS4_OK; 2633 out: 2634 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2635 LINK4res *, resp); 2636 } 2637 2638 /* 2639 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2640 */ 2641 2642 /* ARGSUSED */ 2643 static nfsstat4 2644 do_rfs4_op_lookup(char *nm, struct svc_req *req, struct compound_state *cs) 2645 { 2646 int error; 2647 int different_export = 0; 2648 vnode_t *vp, *pre_tvp = NULL, *oldvp = NULL; 2649 struct exportinfo *exi = NULL, *pre_exi = NULL; 2650 nfsstat4 stat; 2651 fid_t fid; 2652 int attrdir, dotdot, walk; 2653 bool_t is_newvp = FALSE; 2654 2655 if (cs->vp->v_flag & V_XATTRDIR) { 2656 attrdir = 1; 2657 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2658 } else { 2659 attrdir = 0; 2660 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2661 } 2662 2663 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2664 2665 /* 2666 * If dotdotting, then need to check whether it's 2667 * above the root of a filesystem, or above an 2668 * export point. 2669 */ 2670 if (dotdot) { 2671 2672 /* 2673 * If dotdotting at the root of a filesystem, then 2674 * need to traverse back to the mounted-on filesystem 2675 * and do the dotdot lookup there. 2676 */ 2677 if (cs->vp->v_flag & VROOT) { 2678 2679 /* 2680 * If at the system root, then can 2681 * go up no further. 2682 */ 2683 if (VN_CMP(cs->vp, rootdir)) 2684 return (puterrno4(ENOENT)); 2685 2686 /* 2687 * Traverse back to the mounted-on filesystem 2688 */ 2689 cs->vp = untraverse(cs->vp); 2690 2691 /* 2692 * Set the different_export flag so we remember 2693 * to pick up a new exportinfo entry for 2694 * this new filesystem. 2695 */ 2696 different_export = 1; 2697 } else { 2698 2699 /* 2700 * If dotdotting above an export point then set 2701 * the different_export to get new export info. 2702 */ 2703 different_export = nfs_exported(cs->exi, cs->vp); 2704 } 2705 } 2706 2707 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2708 NULL, NULL, NULL); 2709 if (error) 2710 return (puterrno4(error)); 2711 2712 /* 2713 * If the vnode is in a pseudo filesystem, check whether it is visible. 2714 * 2715 * XXX if the vnode is a symlink and it is not visible in 2716 * a pseudo filesystem, return ENOENT (not following symlink). 2717 * V4 client can not mount such symlink. This is a regression 2718 * from V2/V3. 2719 * 2720 * In the same exported filesystem, if the security flavor used 2721 * is not an explicitly shared flavor, limit the view to the visible 2722 * list entries only. This is not a WRONGSEC case because it's already 2723 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2724 */ 2725 if (!different_export && 2726 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2727 cs->access & CS_ACCESS_LIMITED)) { 2728 if (! nfs_visible(cs->exi, vp, &different_export)) { 2729 VN_RELE(vp); 2730 return (puterrno4(ENOENT)); 2731 } 2732 } 2733 2734 /* 2735 * If it's a mountpoint, then traverse it. 2736 */ 2737 if (vn_ismntpt(vp)) { 2738 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2739 pre_tvp = vp; /* save pre-traversed vnode */ 2740 2741 /* 2742 * hold pre_tvp to counteract rele by traverse. We will 2743 * need pre_tvp below if checkexport4 fails 2744 */ 2745 VN_HOLD(pre_tvp); 2746 if ((error = traverse(&vp)) != 0) { 2747 VN_RELE(vp); 2748 VN_RELE(pre_tvp); 2749 return (puterrno4(error)); 2750 } 2751 different_export = 1; 2752 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2753 /* 2754 * The vfsp comparison is to handle the case where 2755 * a LOFS mount is shared. lo_lookup traverses mount points, 2756 * and NFS is unaware of local fs transistions because 2757 * v_vfsmountedhere isn't set. For this special LOFS case, 2758 * the dir and the obj returned by lookup will have different 2759 * vfs ptrs. 2760 */ 2761 different_export = 1; 2762 } 2763 2764 if (different_export) { 2765 2766 bzero(&fid, sizeof (fid)); 2767 fid.fid_len = MAXFIDSZ; 2768 error = vop_fid_pseudo(vp, &fid); 2769 if (error) { 2770 VN_RELE(vp); 2771 if (pre_tvp) 2772 VN_RELE(pre_tvp); 2773 return (puterrno4(error)); 2774 } 2775 2776 if (dotdot) 2777 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2778 else 2779 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2780 2781 if (exi == NULL) { 2782 if (pre_tvp) { 2783 /* 2784 * If this vnode is a mounted-on vnode, 2785 * but the mounted-on file system is not 2786 * exported, send back the filehandle for 2787 * the mounted-on vnode, not the root of 2788 * the mounted-on file system. 2789 */ 2790 VN_RELE(vp); 2791 vp = pre_tvp; 2792 exi = pre_exi; 2793 } else { 2794 VN_RELE(vp); 2795 return (puterrno4(EACCES)); 2796 } 2797 } else if (pre_tvp) { 2798 /* we're done with pre_tvp now. release extra hold */ 2799 VN_RELE(pre_tvp); 2800 } 2801 2802 cs->exi = exi; 2803 2804 /* 2805 * Now we do a checkauth4. The reason is that 2806 * this client/user may not have access to the new 2807 * exported file system, and if he does, 2808 * the client/user may be mapped to a different uid. 2809 * 2810 * We start with a new cr, because the checkauth4 done 2811 * in the PUT*FH operation over wrote the cred's uid, 2812 * gid, etc, and we want the real thing before calling 2813 * checkauth4() 2814 */ 2815 crfree(cs->cr); 2816 cs->cr = crdup(cs->basecr); 2817 2818 oldvp = cs->vp; 2819 cs->vp = vp; 2820 is_newvp = TRUE; 2821 2822 stat = call_checkauth4(cs, req); 2823 if (stat != NFS4_OK) { 2824 VN_RELE(cs->vp); 2825 cs->vp = oldvp; 2826 return (stat); 2827 } 2828 } 2829 2830 /* 2831 * After various NFS checks, do a label check on the path 2832 * component. The label on this path should either be the 2833 * global zone's label or a zone's label. We are only 2834 * interested in the zone's label because exported files 2835 * in global zone is accessible (though read-only) to 2836 * clients. The exportability/visibility check is already 2837 * done before reaching this code. 2838 */ 2839 if (is_system_labeled()) { 2840 bslabel_t *clabel; 2841 2842 ASSERT(req->rq_label != NULL); 2843 clabel = req->rq_label; 2844 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2845 "got client label from request(1)", struct svc_req *, req); 2846 2847 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2848 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 2849 cs->exi)) { 2850 error = EACCES; 2851 goto err_out; 2852 } 2853 } else { 2854 /* 2855 * We grant access to admin_low label clients 2856 * only if the client is trusted, i.e. also 2857 * running Solaris Trusted Extension. 2858 */ 2859 struct sockaddr *ca; 2860 int addr_type; 2861 void *ipaddr; 2862 tsol_tpc_t *tp; 2863 2864 ca = (struct sockaddr *)svc_getrpccaller( 2865 req->rq_xprt)->buf; 2866 if (ca->sa_family == AF_INET) { 2867 addr_type = IPV4_VERSION; 2868 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2869 } else if (ca->sa_family == AF_INET6) { 2870 addr_type = IPV6_VERSION; 2871 ipaddr = &((struct sockaddr_in6 *) 2872 ca)->sin6_addr; 2873 } 2874 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2875 if (tp == NULL || tp->tpc_tp.tp_doi != 2876 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2877 SUN_CIPSO) { 2878 if (tp != NULL) 2879 TPC_RELE(tp); 2880 error = EACCES; 2881 goto err_out; 2882 } 2883 TPC_RELE(tp); 2884 } 2885 } 2886 2887 error = makefh4(&cs->fh, vp, cs->exi); 2888 2889 err_out: 2890 if (error) { 2891 if (is_newvp) { 2892 VN_RELE(cs->vp); 2893 cs->vp = oldvp; 2894 } else 2895 VN_RELE(vp); 2896 return (puterrno4(error)); 2897 } 2898 2899 if (!is_newvp) { 2900 if (cs->vp) 2901 VN_RELE(cs->vp); 2902 cs->vp = vp; 2903 } else if (oldvp) 2904 VN_RELE(oldvp); 2905 2906 /* 2907 * if did lookup on attrdir and didn't lookup .., set named 2908 * attr fh flag 2909 */ 2910 if (attrdir && ! dotdot) 2911 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2912 2913 /* Assume false for now, open proc will set this */ 2914 cs->mandlock = FALSE; 2915 2916 return (NFS4_OK); 2917 } 2918 2919 /* ARGSUSED */ 2920 static void 2921 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2922 struct compound_state *cs) 2923 { 2924 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2925 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2926 char *nm; 2927 uint_t len; 2928 struct sockaddr *ca; 2929 char *name = NULL; 2930 nfsstat4 status; 2931 2932 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2933 LOOKUP4args *, args); 2934 2935 if (cs->vp == NULL) { 2936 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2937 goto out; 2938 } 2939 2940 if (cs->vp->v_type == VLNK) { 2941 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2942 goto out; 2943 } 2944 2945 if (cs->vp->v_type != VDIR) { 2946 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2947 goto out; 2948 } 2949 2950 status = utf8_dir_verify(&args->objname); 2951 if (status != NFS4_OK) { 2952 *cs->statusp = resp->status = status; 2953 goto out; 2954 } 2955 2956 nm = utf8_to_str(&args->objname, &len, NULL); 2957 if (nm == NULL) { 2958 *cs->statusp = resp->status = NFS4ERR_INVAL; 2959 goto out; 2960 } 2961 2962 if (len > MAXNAMELEN) { 2963 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2964 kmem_free(nm, len); 2965 goto out; 2966 } 2967 2968 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2969 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2970 MAXPATHLEN + 1); 2971 2972 if (name == NULL) { 2973 *cs->statusp = resp->status = NFS4ERR_INVAL; 2974 kmem_free(nm, len); 2975 goto out; 2976 } 2977 2978 *cs->statusp = resp->status = do_rfs4_op_lookup(name, req, cs); 2979 2980 if (name != nm) 2981 kmem_free(name, MAXPATHLEN + 1); 2982 kmem_free(nm, len); 2983 2984 out: 2985 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 2986 LOOKUP4res *, resp); 2987 } 2988 2989 /* ARGSUSED */ 2990 static void 2991 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2992 struct compound_state *cs) 2993 { 2994 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2995 2996 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 2997 2998 if (cs->vp == NULL) { 2999 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3000 goto out; 3001 } 3002 3003 if (cs->vp->v_type != VDIR) { 3004 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 3005 goto out; 3006 } 3007 3008 *cs->statusp = resp->status = do_rfs4_op_lookup("..", req, cs); 3009 3010 /* 3011 * From NFSV4 Specification, LOOKUPP should not check for 3012 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 3013 */ 3014 if (resp->status == NFS4ERR_WRONGSEC) { 3015 *cs->statusp = resp->status = NFS4_OK; 3016 } 3017 3018 out: 3019 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 3020 LOOKUPP4res *, resp); 3021 } 3022 3023 3024 /*ARGSUSED2*/ 3025 static void 3026 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3027 struct compound_state *cs) 3028 { 3029 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 3030 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 3031 vnode_t *avp = NULL; 3032 int lookup_flags = LOOKUP_XATTR, error; 3033 int exp_ro = 0; 3034 3035 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 3036 OPENATTR4args *, args); 3037 3038 if (cs->vp == NULL) { 3039 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3040 goto out; 3041 } 3042 3043 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 3044 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 3045 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3046 goto out; 3047 } 3048 3049 /* 3050 * If file system supports passing ACE mask to VOP_ACCESS then 3051 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 3052 */ 3053 3054 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 3055 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 3056 V_ACE_MASK, cs->cr, NULL); 3057 else 3058 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 3059 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 3060 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 3061 3062 if (error) { 3063 *cs->statusp = resp->status = puterrno4(EACCES); 3064 goto out; 3065 } 3066 3067 /* 3068 * The CREATE_XATTR_DIR VOP flag cannot be specified if 3069 * the file system is exported read-only -- regardless of 3070 * createdir flag. Otherwise the attrdir would be created 3071 * (assuming server fs isn't mounted readonly locally). If 3072 * VOP_LOOKUP returns ENOENT in this case, the error will 3073 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3074 * because specfs has no VOP_LOOKUP op, so the macro would 3075 * return ENOSYS. EINVAL is returned by all (current) 3076 * Solaris file system implementations when any of their 3077 * restrictions are violated (xattr(dir) can't have xattrdir). 3078 * Returning NOTSUPP is more appropriate in this case 3079 * because the object will never be able to have an attrdir. 3080 */ 3081 if (args->createdir && ! (exp_ro = rdonly4(req, cs))) 3082 lookup_flags |= CREATE_XATTR_DIR; 3083 3084 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3085 NULL, NULL, NULL); 3086 3087 if (error) { 3088 if (error == ENOENT && args->createdir && exp_ro) 3089 *cs->statusp = resp->status = puterrno4(EROFS); 3090 else if (error == EINVAL || error == ENOSYS) 3091 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3092 else 3093 *cs->statusp = resp->status = puterrno4(error); 3094 goto out; 3095 } 3096 3097 ASSERT(avp->v_flag & V_XATTRDIR); 3098 3099 error = makefh4(&cs->fh, avp, cs->exi); 3100 3101 if (error) { 3102 VN_RELE(avp); 3103 *cs->statusp = resp->status = puterrno4(error); 3104 goto out; 3105 } 3106 3107 VN_RELE(cs->vp); 3108 cs->vp = avp; 3109 3110 /* 3111 * There is no requirement for an attrdir fh flag 3112 * because the attrdir has a vnode flag to distinguish 3113 * it from regular (non-xattr) directories. The 3114 * FH4_ATTRDIR flag is set for future sanity checks. 3115 */ 3116 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3117 *cs->statusp = resp->status = NFS4_OK; 3118 3119 out: 3120 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3121 OPENATTR4res *, resp); 3122 } 3123 3124 static int 3125 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3126 caller_context_t *ct) 3127 { 3128 int error; 3129 int i; 3130 clock_t delaytime; 3131 3132 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3133 3134 /* 3135 * Don't block on mandatory locks. If this routine returns 3136 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3137 */ 3138 uio->uio_fmode = FNONBLOCK; 3139 3140 for (i = 0; i < rfs4_maxlock_tries; i++) { 3141 3142 3143 if (direction == FREAD) { 3144 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3145 error = VOP_READ(vp, uio, ioflag, cred, ct); 3146 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3147 } else { 3148 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3149 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3150 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3151 } 3152 3153 if (error != EAGAIN) 3154 break; 3155 3156 if (i < rfs4_maxlock_tries - 1) { 3157 delay(delaytime); 3158 delaytime *= 2; 3159 } 3160 } 3161 3162 return (error); 3163 } 3164 3165 /* ARGSUSED */ 3166 static void 3167 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3168 struct compound_state *cs) 3169 { 3170 READ4args *args = &argop->nfs_argop4_u.opread; 3171 READ4res *resp = &resop->nfs_resop4_u.opread; 3172 int error; 3173 int verror; 3174 vnode_t *vp; 3175 struct vattr va; 3176 struct iovec iov, *iovp = NULL; 3177 int iovcnt; 3178 struct uio uio; 3179 u_offset_t offset; 3180 bool_t *deleg = &cs->deleg; 3181 nfsstat4 stat; 3182 int in_crit = 0; 3183 mblk_t *mp = NULL; 3184 int alloc_err = 0; 3185 int rdma_used = 0; 3186 int loaned_buffers; 3187 caller_context_t ct; 3188 struct uio *uiop; 3189 3190 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3191 READ4args, args); 3192 3193 vp = cs->vp; 3194 if (vp == NULL) { 3195 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3196 goto out; 3197 } 3198 if (cs->access == CS_ACCESS_DENIED) { 3199 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3200 goto out; 3201 } 3202 3203 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3204 deleg, TRUE, &ct)) != NFS4_OK) { 3205 *cs->statusp = resp->status = stat; 3206 goto out; 3207 } 3208 3209 /* 3210 * Enter the critical region before calling VOP_RWLOCK 3211 * to avoid a deadlock with write requests. 3212 */ 3213 if (nbl_need_check(vp)) { 3214 nbl_start_crit(vp, RW_READER); 3215 in_crit = 1; 3216 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3217 &ct)) { 3218 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3219 goto out; 3220 } 3221 } 3222 3223 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3224 deleg, TRUE, &ct)) != NFS4_OK) { 3225 *cs->statusp = resp->status = stat; 3226 goto out; 3227 } 3228 3229 if (args->wlist) { 3230 if (args->count > clist_len(args->wlist)) { 3231 *cs->statusp = resp->status = NFS4ERR_INVAL; 3232 goto out; 3233 } 3234 rdma_used = 1; 3235 } 3236 3237 /* use loaned buffers for TCP */ 3238 loaned_buffers = (nfs_loaned_buffers && !rdma_used) ? 1 : 0; 3239 3240 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3241 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3242 3243 /* 3244 * If we can't get the attributes, then we can't do the 3245 * right access checking. So, we'll fail the request. 3246 */ 3247 if (verror) { 3248 *cs->statusp = resp->status = puterrno4(verror); 3249 goto out; 3250 } 3251 3252 if (vp->v_type != VREG) { 3253 *cs->statusp = resp->status = 3254 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3255 goto out; 3256 } 3257 3258 if (crgetuid(cs->cr) != va.va_uid && 3259 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3260 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3261 *cs->statusp = resp->status = puterrno4(error); 3262 goto out; 3263 } 3264 3265 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3266 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3267 goto out; 3268 } 3269 3270 offset = args->offset; 3271 if (offset >= va.va_size) { 3272 *cs->statusp = resp->status = NFS4_OK; 3273 resp->eof = TRUE; 3274 resp->data_len = 0; 3275 resp->data_val = NULL; 3276 resp->mblk = NULL; 3277 /* RDMA */ 3278 resp->wlist = args->wlist; 3279 resp->wlist_len = resp->data_len; 3280 *cs->statusp = resp->status = NFS4_OK; 3281 if (resp->wlist) 3282 clist_zero_len(resp->wlist); 3283 goto out; 3284 } 3285 3286 if (args->count == 0) { 3287 *cs->statusp = resp->status = NFS4_OK; 3288 resp->eof = FALSE; 3289 resp->data_len = 0; 3290 resp->data_val = NULL; 3291 resp->mblk = NULL; 3292 /* RDMA */ 3293 resp->wlist = args->wlist; 3294 resp->wlist_len = resp->data_len; 3295 if (resp->wlist) 3296 clist_zero_len(resp->wlist); 3297 goto out; 3298 } 3299 3300 /* 3301 * Do not allocate memory more than maximum allowed 3302 * transfer size 3303 */ 3304 if (args->count > rfs4_tsize(req)) 3305 args->count = rfs4_tsize(req); 3306 3307 if (loaned_buffers) { 3308 uiop = (uio_t *)rfs_setup_xuio(vp); 3309 ASSERT(uiop != NULL); 3310 uiop->uio_segflg = UIO_SYSSPACE; 3311 uiop->uio_loffset = args->offset; 3312 uiop->uio_resid = args->count; 3313 3314 /* Jump to do the read if successful */ 3315 if (!VOP_REQZCBUF(vp, UIO_READ, (xuio_t *)uiop, cs->cr, &ct)) { 3316 /* 3317 * Need to hold the vnode until after VOP_RETZCBUF() 3318 * is called. 3319 */ 3320 VN_HOLD(vp); 3321 goto doio_read; 3322 } 3323 3324 DTRACE_PROBE2(nfss__i__reqzcbuf_failed, int, 3325 uiop->uio_loffset, int, uiop->uio_resid); 3326 3327 uiop->uio_extflg = 0; 3328 3329 /* failure to setup for zero copy */ 3330 rfs_free_xuio((void *)uiop); 3331 loaned_buffers = 0; 3332 } 3333 3334 /* 3335 * If returning data via RDMA Write, then grab the chunk list. If we 3336 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3337 */ 3338 if (rdma_used) { 3339 mp = NULL; 3340 (void) rdma_get_wchunk(req, &iov, args->wlist); 3341 uio.uio_iov = &iov; 3342 uio.uio_iovcnt = 1; 3343 } else { 3344 /* 3345 * mp will contain the data to be sent out in the read reply. 3346 * It will be freed after the reply has been sent. 3347 */ 3348 mp = rfs_read_alloc(args->count, &iovp, &iovcnt); 3349 ASSERT(mp != NULL); 3350 ASSERT(alloc_err == 0); 3351 uio.uio_iov = iovp; 3352 uio.uio_iovcnt = iovcnt; 3353 } 3354 3355 uio.uio_segflg = UIO_SYSSPACE; 3356 uio.uio_extflg = UIO_COPY_CACHED; 3357 uio.uio_loffset = args->offset; 3358 uio.uio_resid = args->count; 3359 uiop = &uio; 3360 3361 doio_read: 3362 error = do_io(FREAD, vp, uiop, 0, cs->cr, &ct); 3363 3364 va.va_mask = AT_SIZE; 3365 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3366 3367 if (error) { 3368 if (mp) 3369 freemsg(mp); 3370 *cs->statusp = resp->status = puterrno4(error); 3371 goto out; 3372 } 3373 3374 /* make mblk using zc buffers */ 3375 if (loaned_buffers) { 3376 mp = uio_to_mblk(uiop); 3377 ASSERT(mp != NULL); 3378 } 3379 3380 *cs->statusp = resp->status = NFS4_OK; 3381 3382 ASSERT(uiop->uio_resid >= 0); 3383 resp->data_len = args->count - uiop->uio_resid; 3384 if (mp) { 3385 resp->data_val = (char *)mp->b_datap->db_base; 3386 rfs_rndup_mblks(mp, resp->data_len, loaned_buffers); 3387 } else { 3388 resp->data_val = (caddr_t)iov.iov_base; 3389 } 3390 3391 resp->mblk = mp; 3392 3393 if (!verror && offset + resp->data_len == va.va_size) 3394 resp->eof = TRUE; 3395 else 3396 resp->eof = FALSE; 3397 3398 if (rdma_used) { 3399 if (!rdma_setup_read_data4(args, resp)) { 3400 *cs->statusp = resp->status = NFS4ERR_INVAL; 3401 } 3402 } else { 3403 resp->wlist = NULL; 3404 } 3405 3406 out: 3407 if (in_crit) 3408 nbl_end_crit(vp); 3409 3410 if (iovp != NULL) 3411 kmem_free(iovp, iovcnt * sizeof (struct iovec)); 3412 3413 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3414 READ4res *, resp); 3415 } 3416 3417 static void 3418 rfs4_op_read_free(nfs_resop4 *resop) 3419 { 3420 READ4res *resp = &resop->nfs_resop4_u.opread; 3421 3422 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3423 freemsg(resp->mblk); 3424 resp->mblk = NULL; 3425 resp->data_val = NULL; 3426 resp->data_len = 0; 3427 } 3428 } 3429 3430 static void 3431 rfs4_op_readdir_free(nfs_resop4 * resop) 3432 { 3433 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3434 3435 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3436 freeb(resp->mblk); 3437 resp->mblk = NULL; 3438 resp->data_len = 0; 3439 } 3440 } 3441 3442 3443 /* ARGSUSED */ 3444 static void 3445 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3446 struct compound_state *cs) 3447 { 3448 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3449 int error; 3450 vnode_t *vp; 3451 struct exportinfo *exi, *sav_exi; 3452 nfs_fh4_fmt_t *fh_fmtp; 3453 3454 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3455 3456 if (cs->vp) { 3457 VN_RELE(cs->vp); 3458 cs->vp = NULL; 3459 } 3460 3461 if (cs->cr) 3462 crfree(cs->cr); 3463 3464 cs->cr = crdup(cs->basecr); 3465 3466 vp = exi_public->exi_vp; 3467 if (vp == NULL) { 3468 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3469 goto out; 3470 } 3471 3472 error = makefh4(&cs->fh, vp, exi_public); 3473 if (error != 0) { 3474 *cs->statusp = resp->status = puterrno4(error); 3475 goto out; 3476 } 3477 sav_exi = cs->exi; 3478 if (exi_public == exi_root) { 3479 /* 3480 * No filesystem is actually shared public, so we default 3481 * to exi_root. In this case, we must check whether root 3482 * is exported. 3483 */ 3484 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3485 3486 /* 3487 * if root filesystem is exported, the exportinfo struct that we 3488 * should use is what checkexport4 returns, because root_exi is 3489 * actually a mostly empty struct. 3490 */ 3491 exi = checkexport4(&fh_fmtp->fh4_fsid, 3492 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3493 cs->exi = ((exi != NULL) ? exi : exi_public); 3494 } else { 3495 /* 3496 * it's a properly shared filesystem 3497 */ 3498 cs->exi = exi_public; 3499 } 3500 3501 if (is_system_labeled()) { 3502 bslabel_t *clabel; 3503 3504 ASSERT(req->rq_label != NULL); 3505 clabel = req->rq_label; 3506 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3507 "got client label from request(1)", 3508 struct svc_req *, req); 3509 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3510 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 3511 cs->exi)) { 3512 *cs->statusp = resp->status = 3513 NFS4ERR_SERVERFAULT; 3514 goto out; 3515 } 3516 } 3517 } 3518 3519 VN_HOLD(vp); 3520 cs->vp = vp; 3521 3522 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3523 VN_RELE(cs->vp); 3524 cs->vp = NULL; 3525 cs->exi = sav_exi; 3526 goto out; 3527 } 3528 3529 *cs->statusp = resp->status = NFS4_OK; 3530 out: 3531 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3532 PUTPUBFH4res *, resp); 3533 } 3534 3535 /* 3536 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3537 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3538 * or joe have restrictive search permissions, then we shouldn't let 3539 * the client get a file handle. This is easy to enforce. However, we 3540 * don't know what security flavor should be used until we resolve the 3541 * path name. Another complication is uid mapping. If root is 3542 * the user, then it will be mapped to the anonymous user by default, 3543 * but we won't know that till we've resolved the path name. And we won't 3544 * know what the anonymous user is. 3545 * Luckily, SECINFO is specified to take a full filename. 3546 * So what we will have to in rfs4_op_lookup is check that flavor of 3547 * the target object matches that of the request, and if root was the 3548 * caller, check for the root= and anon= options, and if necessary, 3549 * repeat the lookup using the right cred_t. But that's not done yet. 3550 */ 3551 /* ARGSUSED */ 3552 static void 3553 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3554 struct compound_state *cs) 3555 { 3556 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3557 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3558 nfs_fh4_fmt_t *fh_fmtp; 3559 3560 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3561 PUTFH4args *, args); 3562 3563 if (cs->vp) { 3564 VN_RELE(cs->vp); 3565 cs->vp = NULL; 3566 } 3567 3568 if (cs->cr) { 3569 crfree(cs->cr); 3570 cs->cr = NULL; 3571 } 3572 3573 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3574 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3575 goto out; 3576 } 3577 3578 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3579 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3580 NULL); 3581 3582 if (cs->exi == NULL) { 3583 *cs->statusp = resp->status = NFS4ERR_STALE; 3584 goto out; 3585 } 3586 3587 cs->cr = crdup(cs->basecr); 3588 3589 ASSERT(cs->cr != NULL); 3590 3591 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3592 *cs->statusp = resp->status; 3593 goto out; 3594 } 3595 3596 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3597 VN_RELE(cs->vp); 3598 cs->vp = NULL; 3599 goto out; 3600 } 3601 3602 nfs_fh4_copy(&args->object, &cs->fh); 3603 *cs->statusp = resp->status = NFS4_OK; 3604 cs->deleg = FALSE; 3605 3606 out: 3607 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3608 PUTFH4res *, resp); 3609 } 3610 3611 /* ARGSUSED */ 3612 static void 3613 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3614 struct compound_state *cs) 3615 { 3616 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3617 int error; 3618 fid_t fid; 3619 struct exportinfo *exi, *sav_exi; 3620 3621 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3622 3623 if (cs->vp) { 3624 VN_RELE(cs->vp); 3625 cs->vp = NULL; 3626 } 3627 3628 if (cs->cr) 3629 crfree(cs->cr); 3630 3631 cs->cr = crdup(cs->basecr); 3632 3633 /* 3634 * Using rootdir, the system root vnode, 3635 * get its fid. 3636 */ 3637 bzero(&fid, sizeof (fid)); 3638 fid.fid_len = MAXFIDSZ; 3639 error = vop_fid_pseudo(rootdir, &fid); 3640 if (error != 0) { 3641 *cs->statusp = resp->status = puterrno4(error); 3642 goto out; 3643 } 3644 3645 /* 3646 * Then use the root fsid & fid it to find out if it's exported 3647 * 3648 * If the server root isn't exported directly, then 3649 * it should at least be a pseudo export based on 3650 * one or more exports further down in the server's 3651 * file tree. 3652 */ 3653 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3654 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3655 NFS4_DEBUG(rfs4_debug, 3656 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3657 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3658 goto out; 3659 } 3660 3661 /* 3662 * Now make a filehandle based on the root 3663 * export and root vnode. 3664 */ 3665 error = makefh4(&cs->fh, rootdir, exi); 3666 if (error != 0) { 3667 *cs->statusp = resp->status = puterrno4(error); 3668 goto out; 3669 } 3670 3671 sav_exi = cs->exi; 3672 cs->exi = exi; 3673 3674 VN_HOLD(rootdir); 3675 cs->vp = rootdir; 3676 3677 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3678 VN_RELE(rootdir); 3679 cs->vp = NULL; 3680 cs->exi = sav_exi; 3681 goto out; 3682 } 3683 3684 *cs->statusp = resp->status = NFS4_OK; 3685 cs->deleg = FALSE; 3686 out: 3687 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3688 PUTROOTFH4res *, resp); 3689 } 3690 3691 /* 3692 * set_rdattr_params sets up the variables used to manage what information 3693 * to get for each directory entry. 3694 */ 3695 static nfsstat4 3696 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3697 bitmap4 attrs, bool_t *need_to_lookup) 3698 { 3699 uint_t va_mask; 3700 nfsstat4 status; 3701 bitmap4 objbits; 3702 3703 status = bitmap4_to_attrmask(attrs, sargp); 3704 if (status != NFS4_OK) { 3705 /* 3706 * could not even figure attr mask 3707 */ 3708 return (status); 3709 } 3710 va_mask = sargp->vap->va_mask; 3711 3712 /* 3713 * dirent's d_ino is always correct value for mounted_on_fileid. 3714 * mntdfid_set is set once here, but mounted_on_fileid is 3715 * set in main dirent processing loop for each dirent. 3716 * The mntdfid_set is a simple optimization that lets the 3717 * server attr code avoid work when caller is readdir. 3718 */ 3719 sargp->mntdfid_set = TRUE; 3720 3721 /* 3722 * Lookup entry only if client asked for any of the following: 3723 * a) vattr attrs 3724 * b) vfs attrs 3725 * c) attrs w/per-object scope requested (change, filehandle, etc) 3726 * other than mounted_on_fileid (which we can take from dirent) 3727 */ 3728 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3729 3730 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3731 *need_to_lookup = TRUE; 3732 else 3733 *need_to_lookup = FALSE; 3734 3735 if (sargp->sbp == NULL) 3736 return (NFS4_OK); 3737 3738 /* 3739 * If filesystem attrs are requested, get them now from the 3740 * directory vp, as most entries will have same filesystem. The only 3741 * exception are mounted over entries but we handle 3742 * those as we go (XXX mounted over detection not yet implemented). 3743 */ 3744 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3745 status = bitmap4_get_sysattrs(sargp); 3746 sargp->vap->va_mask = va_mask; 3747 3748 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3749 /* 3750 * Failed to get filesystem attributes. 3751 * Return a rdattr_error for each entry, but don't fail. 3752 * However, don't get any obj-dependent attrs. 3753 */ 3754 sargp->rdattr_error = status; /* for rdattr_error */ 3755 *need_to_lookup = FALSE; 3756 /* 3757 * At least get fileid for regular readdir output 3758 */ 3759 sargp->vap->va_mask &= AT_NODEID; 3760 status = NFS4_OK; 3761 } 3762 3763 return (status); 3764 } 3765 3766 /* 3767 * readlink: args: CURRENT_FH. 3768 * res: status. If success - CURRENT_FH unchanged, return linktext. 3769 */ 3770 3771 /* ARGSUSED */ 3772 static void 3773 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3774 struct compound_state *cs) 3775 { 3776 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3777 int error; 3778 vnode_t *vp; 3779 struct iovec iov; 3780 struct vattr va; 3781 struct uio uio; 3782 char *data; 3783 struct sockaddr *ca; 3784 char *name = NULL; 3785 int is_referral; 3786 3787 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3788 3789 /* CURRENT_FH: directory */ 3790 vp = cs->vp; 3791 if (vp == NULL) { 3792 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3793 goto out; 3794 } 3795 3796 if (cs->access == CS_ACCESS_DENIED) { 3797 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3798 goto out; 3799 } 3800 3801 /* Is it a referral? */ 3802 if (vn_is_nfs_reparse(vp, cs->cr) && client_is_downrev(req)) { 3803 3804 is_referral = 1; 3805 3806 } else { 3807 3808 is_referral = 0; 3809 3810 if (vp->v_type == VDIR) { 3811 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3812 goto out; 3813 } 3814 3815 if (vp->v_type != VLNK) { 3816 *cs->statusp = resp->status = NFS4ERR_INVAL; 3817 goto out; 3818 } 3819 3820 } 3821 3822 va.va_mask = AT_MODE; 3823 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3824 if (error) { 3825 *cs->statusp = resp->status = puterrno4(error); 3826 goto out; 3827 } 3828 3829 if (MANDLOCK(vp, va.va_mode)) { 3830 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3831 goto out; 3832 } 3833 3834 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3835 3836 if (is_referral) { 3837 char *s; 3838 size_t strsz; 3839 3840 /* Get an artificial symlink based on a referral */ 3841 s = build_symlink(vp, cs->cr, &strsz); 3842 global_svstat_ptr[4][NFS_REFERLINKS].value.ui64++; 3843 DTRACE_PROBE2(nfs4serv__func__referral__reflink, 3844 vnode_t *, vp, char *, s); 3845 if (s == NULL) 3846 error = EINVAL; 3847 else { 3848 error = 0; 3849 (void) strlcpy(data, s, MAXPATHLEN + 1); 3850 kmem_free(s, strsz); 3851 } 3852 3853 } else { 3854 3855 iov.iov_base = data; 3856 iov.iov_len = MAXPATHLEN; 3857 uio.uio_iov = &iov; 3858 uio.uio_iovcnt = 1; 3859 uio.uio_segflg = UIO_SYSSPACE; 3860 uio.uio_extflg = UIO_COPY_CACHED; 3861 uio.uio_loffset = 0; 3862 uio.uio_resid = MAXPATHLEN; 3863 3864 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3865 3866 if (!error) 3867 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3868 } 3869 3870 if (error) { 3871 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3872 *cs->statusp = resp->status = puterrno4(error); 3873 goto out; 3874 } 3875 3876 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 3877 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, 3878 MAXPATHLEN + 1); 3879 3880 if (name == NULL) { 3881 /* 3882 * Even though the conversion failed, we return 3883 * something. We just don't translate it. 3884 */ 3885 name = data; 3886 } 3887 3888 /* 3889 * treat link name as data 3890 */ 3891 (void) str_to_utf8(name, (utf8string *)&resp->link); 3892 3893 if (name != data) 3894 kmem_free(name, MAXPATHLEN + 1); 3895 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3896 *cs->statusp = resp->status = NFS4_OK; 3897 3898 out: 3899 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3900 READLINK4res *, resp); 3901 } 3902 3903 static void 3904 rfs4_op_readlink_free(nfs_resop4 *resop) 3905 { 3906 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3907 utf8string *symlink = (utf8string *)&resp->link; 3908 3909 if (symlink->utf8string_val) { 3910 UTF8STRING_FREE(*symlink) 3911 } 3912 } 3913 3914 /* 3915 * release_lockowner: 3916 * Release any state associated with the supplied 3917 * lockowner. Note if any lo_state is holding locks we will not 3918 * rele that lo_state and thus the lockowner will not be destroyed. 3919 * A client using lock after the lock owner stateid has been released 3920 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3921 * to reissue the lock with new_lock_owner set to TRUE. 3922 * args: lock_owner 3923 * res: status 3924 */ 3925 /* ARGSUSED */ 3926 static void 3927 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3928 struct svc_req *req, struct compound_state *cs) 3929 { 3930 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3931 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3932 rfs4_lockowner_t *lo; 3933 rfs4_openowner_t *oo; 3934 rfs4_state_t *sp; 3935 rfs4_lo_state_t *lsp; 3936 rfs4_client_t *cp; 3937 bool_t create = FALSE; 3938 locklist_t *llist; 3939 sysid_t sysid; 3940 3941 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3942 cs, RELEASE_LOCKOWNER4args *, ap); 3943 3944 /* Make sure there is a clientid around for this request */ 3945 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3946 3947 if (cp == NULL) { 3948 *cs->statusp = resp->status = 3949 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3950 goto out; 3951 } 3952 rfs4_client_rele(cp); 3953 3954 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3955 if (lo == NULL) { 3956 *cs->statusp = resp->status = NFS4_OK; 3957 goto out; 3958 } 3959 ASSERT(lo->rl_client != NULL); 3960 3961 /* 3962 * Check for EXPIRED client. If so will reap state with in a lease 3963 * period or on next set_clientid_confirm step 3964 */ 3965 if (rfs4_lease_expired(lo->rl_client)) { 3966 rfs4_lockowner_rele(lo); 3967 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3968 goto out; 3969 } 3970 3971 /* 3972 * If no sysid has been assigned, then no locks exist; just return. 3973 */ 3974 rfs4_dbe_lock(lo->rl_client->rc_dbe); 3975 if (lo->rl_client->rc_sysidt == LM_NOSYSID) { 3976 rfs4_lockowner_rele(lo); 3977 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3978 goto out; 3979 } 3980 3981 sysid = lo->rl_client->rc_sysidt; 3982 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3983 3984 /* 3985 * Mark the lockowner invalid. 3986 */ 3987 rfs4_dbe_hide(lo->rl_dbe); 3988 3989 /* 3990 * sysid-pid pair should now not be used since the lockowner is 3991 * invalid. If the client were to instantiate the lockowner again 3992 * it would be assigned a new pid. Thus we can get the list of 3993 * current locks. 3994 */ 3995 3996 llist = flk_get_active_locks(sysid, lo->rl_pid); 3997 /* If we are still holding locks fail */ 3998 if (llist != NULL) { 3999 4000 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 4001 4002 flk_free_locklist(llist); 4003 /* 4004 * We need to unhide the lockowner so the client can 4005 * try it again. The bad thing here is if the client 4006 * has a logic error that took it here in the first place 4007 * he probably has lost accounting of the locks that it 4008 * is holding. So we may have dangling state until the 4009 * open owner state is reaped via close. One scenario 4010 * that could possibly occur is that the client has 4011 * sent the unlock request(s) in separate threads 4012 * and has not waited for the replies before sending the 4013 * RELEASE_LOCKOWNER request. Presumably, it would expect 4014 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 4015 * reissuing the request. 4016 */ 4017 rfs4_dbe_unhide(lo->rl_dbe); 4018 rfs4_lockowner_rele(lo); 4019 goto out; 4020 } 4021 4022 /* 4023 * For the corresponding client we need to check each open 4024 * owner for any opens that have lockowner state associated 4025 * with this lockowner. 4026 */ 4027 4028 rfs4_dbe_lock(lo->rl_client->rc_dbe); 4029 for (oo = list_head(&lo->rl_client->rc_openownerlist); oo != NULL; 4030 oo = list_next(&lo->rl_client->rc_openownerlist, oo)) { 4031 4032 rfs4_dbe_lock(oo->ro_dbe); 4033 for (sp = list_head(&oo->ro_statelist); sp != NULL; 4034 sp = list_next(&oo->ro_statelist, sp)) { 4035 4036 rfs4_dbe_lock(sp->rs_dbe); 4037 for (lsp = list_head(&sp->rs_lostatelist); 4038 lsp != NULL; 4039 lsp = list_next(&sp->rs_lostatelist, lsp)) { 4040 if (lsp->rls_locker == lo) { 4041 rfs4_dbe_lock(lsp->rls_dbe); 4042 rfs4_dbe_invalidate(lsp->rls_dbe); 4043 rfs4_dbe_unlock(lsp->rls_dbe); 4044 } 4045 } 4046 rfs4_dbe_unlock(sp->rs_dbe); 4047 } 4048 rfs4_dbe_unlock(oo->ro_dbe); 4049 } 4050 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 4051 4052 rfs4_lockowner_rele(lo); 4053 4054 *cs->statusp = resp->status = NFS4_OK; 4055 4056 out: 4057 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 4058 cs, RELEASE_LOCKOWNER4res *, resp); 4059 } 4060 4061 /* 4062 * short utility function to lookup a file and recall the delegation 4063 */ 4064 static rfs4_file_t * 4065 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 4066 int *lkup_error, cred_t *cr) 4067 { 4068 vnode_t *vp; 4069 rfs4_file_t *fp = NULL; 4070 bool_t fcreate = FALSE; 4071 int error; 4072 4073 if (vpp) 4074 *vpp = NULL; 4075 4076 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 4077 NULL)) == 0) { 4078 if (vp->v_type == VREG) 4079 fp = rfs4_findfile(vp, NULL, &fcreate); 4080 if (vpp) 4081 *vpp = vp; 4082 else 4083 VN_RELE(vp); 4084 } 4085 4086 if (lkup_error) 4087 *lkup_error = error; 4088 4089 return (fp); 4090 } 4091 4092 /* 4093 * remove: args: CURRENT_FH: directory; name. 4094 * res: status. If success - CURRENT_FH unchanged, return change_info 4095 * for directory. 4096 */ 4097 /* ARGSUSED */ 4098 static void 4099 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4100 struct compound_state *cs) 4101 { 4102 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 4103 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 4104 int error; 4105 vnode_t *dvp, *vp; 4106 struct vattr bdva, idva, adva; 4107 char *nm; 4108 uint_t len; 4109 rfs4_file_t *fp; 4110 int in_crit = 0; 4111 bslabel_t *clabel; 4112 struct sockaddr *ca; 4113 char *name = NULL; 4114 nfsstat4 status; 4115 4116 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 4117 REMOVE4args *, args); 4118 4119 /* CURRENT_FH: directory */ 4120 dvp = cs->vp; 4121 if (dvp == NULL) { 4122 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4123 goto out; 4124 } 4125 4126 if (cs->access == CS_ACCESS_DENIED) { 4127 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4128 goto out; 4129 } 4130 4131 /* 4132 * If there is an unshared filesystem mounted on this vnode, 4133 * Do not allow to remove anything in this directory. 4134 */ 4135 if (vn_ismntpt(dvp)) { 4136 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4137 goto out; 4138 } 4139 4140 if (dvp->v_type != VDIR) { 4141 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4142 goto out; 4143 } 4144 4145 status = utf8_dir_verify(&args->target); 4146 if (status != NFS4_OK) { 4147 *cs->statusp = resp->status = status; 4148 goto out; 4149 } 4150 4151 /* 4152 * Lookup the file so that we can check if it's a directory 4153 */ 4154 nm = utf8_to_fn(&args->target, &len, NULL); 4155 if (nm == NULL) { 4156 *cs->statusp = resp->status = NFS4ERR_INVAL; 4157 goto out; 4158 } 4159 4160 if (len > MAXNAMELEN) { 4161 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4162 kmem_free(nm, len); 4163 goto out; 4164 } 4165 4166 if (rdonly4(req, cs)) { 4167 *cs->statusp = resp->status = NFS4ERR_ROFS; 4168 kmem_free(nm, len); 4169 goto out; 4170 } 4171 4172 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4173 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 4174 MAXPATHLEN + 1); 4175 4176 if (name == NULL) { 4177 *cs->statusp = resp->status = NFS4ERR_INVAL; 4178 kmem_free(nm, len); 4179 goto out; 4180 } 4181 4182 /* 4183 * Lookup the file to determine type and while we are see if 4184 * there is a file struct around and check for delegation. 4185 * We don't need to acquire va_seq before this lookup, if 4186 * it causes an update, cinfo.before will not match, which will 4187 * trigger a cache flush even if atomic is TRUE. 4188 */ 4189 if (fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr)) { 4190 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4191 NULL)) { 4192 VN_RELE(vp); 4193 rfs4_file_rele(fp); 4194 *cs->statusp = resp->status = NFS4ERR_DELAY; 4195 if (nm != name) 4196 kmem_free(name, MAXPATHLEN + 1); 4197 kmem_free(nm, len); 4198 goto out; 4199 } 4200 } 4201 4202 /* Didn't find anything to remove */ 4203 if (vp == NULL) { 4204 *cs->statusp = resp->status = error; 4205 if (nm != name) 4206 kmem_free(name, MAXPATHLEN + 1); 4207 kmem_free(nm, len); 4208 goto out; 4209 } 4210 4211 if (nbl_need_check(vp)) { 4212 nbl_start_crit(vp, RW_READER); 4213 in_crit = 1; 4214 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 4215 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4216 if (nm != name) 4217 kmem_free(name, MAXPATHLEN + 1); 4218 kmem_free(nm, len); 4219 nbl_end_crit(vp); 4220 VN_RELE(vp); 4221 if (fp) { 4222 rfs4_clear_dont_grant(fp); 4223 rfs4_file_rele(fp); 4224 } 4225 goto out; 4226 } 4227 } 4228 4229 /* check label before allowing removal */ 4230 if (is_system_labeled()) { 4231 ASSERT(req->rq_label != NULL); 4232 clabel = req->rq_label; 4233 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 4234 "got client label from request(1)", 4235 struct svc_req *, req); 4236 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4237 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK, 4238 cs->exi)) { 4239 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4240 if (name != nm) 4241 kmem_free(name, MAXPATHLEN + 1); 4242 kmem_free(nm, len); 4243 if (in_crit) 4244 nbl_end_crit(vp); 4245 VN_RELE(vp); 4246 if (fp) { 4247 rfs4_clear_dont_grant(fp); 4248 rfs4_file_rele(fp); 4249 } 4250 goto out; 4251 } 4252 } 4253 } 4254 4255 /* Get dir "before" change value */ 4256 bdva.va_mask = AT_CTIME|AT_SEQ; 4257 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 4258 if (error) { 4259 *cs->statusp = resp->status = puterrno4(error); 4260 if (nm != name) 4261 kmem_free(name, MAXPATHLEN + 1); 4262 kmem_free(nm, len); 4263 if (in_crit) 4264 nbl_end_crit(vp); 4265 VN_RELE(vp); 4266 if (fp) { 4267 rfs4_clear_dont_grant(fp); 4268 rfs4_file_rele(fp); 4269 } 4270 goto out; 4271 } 4272 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4273 4274 /* Actually do the REMOVE operation */ 4275 if (vp->v_type == VDIR) { 4276 /* 4277 * Can't remove a directory that has a mounted-on filesystem. 4278 */ 4279 if (vn_ismntpt(vp)) { 4280 error = EACCES; 4281 } else { 4282 /* 4283 * System V defines rmdir to return EEXIST, 4284 * not ENOTEMPTY, if the directory is not 4285 * empty. A System V NFS server needs to map 4286 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4287 * transmit over the wire. 4288 */ 4289 if ((error = VOP_RMDIR(dvp, name, rootdir, cs->cr, 4290 NULL, 0)) == EEXIST) 4291 error = ENOTEMPTY; 4292 } 4293 } else { 4294 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && 4295 fp != NULL) { 4296 struct vattr va; 4297 vnode_t *tvp; 4298 4299 rfs4_dbe_lock(fp->rf_dbe); 4300 tvp = fp->rf_vp; 4301 if (tvp) 4302 VN_HOLD(tvp); 4303 rfs4_dbe_unlock(fp->rf_dbe); 4304 4305 if (tvp) { 4306 /* 4307 * This is va_seq safe because we are not 4308 * manipulating dvp. 4309 */ 4310 va.va_mask = AT_NLINK; 4311 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4312 va.va_nlink == 0) { 4313 /* Remove state on file remove */ 4314 if (in_crit) { 4315 nbl_end_crit(vp); 4316 in_crit = 0; 4317 } 4318 rfs4_close_all_state(fp); 4319 } 4320 VN_RELE(tvp); 4321 } 4322 } 4323 } 4324 4325 if (in_crit) 4326 nbl_end_crit(vp); 4327 VN_RELE(vp); 4328 4329 if (fp) { 4330 rfs4_clear_dont_grant(fp); 4331 rfs4_file_rele(fp); 4332 } 4333 if (nm != name) 4334 kmem_free(name, MAXPATHLEN + 1); 4335 kmem_free(nm, len); 4336 4337 if (error) { 4338 *cs->statusp = resp->status = puterrno4(error); 4339 goto out; 4340 } 4341 4342 /* 4343 * Get the initial "after" sequence number, if it fails, set to zero 4344 */ 4345 idva.va_mask = AT_SEQ; 4346 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4347 idva.va_seq = 0; 4348 4349 /* 4350 * Force modified data and metadata out to stable storage. 4351 */ 4352 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4353 4354 /* 4355 * Get "after" change value, if it fails, simply return the 4356 * before value. 4357 */ 4358 adva.va_mask = AT_CTIME|AT_SEQ; 4359 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4360 adva.va_ctime = bdva.va_ctime; 4361 adva.va_seq = 0; 4362 } 4363 4364 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4365 4366 /* 4367 * The cinfo.atomic = TRUE only if we have 4368 * non-zero va_seq's, and it has incremented by exactly one 4369 * during the VOP_REMOVE/RMDIR and it didn't change during 4370 * the VOP_FSYNC. 4371 */ 4372 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4373 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4374 resp->cinfo.atomic = TRUE; 4375 else 4376 resp->cinfo.atomic = FALSE; 4377 4378 *cs->statusp = resp->status = NFS4_OK; 4379 4380 out: 4381 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4382 REMOVE4res *, resp); 4383 } 4384 4385 /* 4386 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4387 * oldname and newname. 4388 * res: status. If success - CURRENT_FH unchanged, return change_info 4389 * for both from and target directories. 4390 */ 4391 /* ARGSUSED */ 4392 static void 4393 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4394 struct compound_state *cs) 4395 { 4396 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4397 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4398 int error; 4399 vnode_t *odvp; 4400 vnode_t *ndvp; 4401 vnode_t *srcvp, *targvp; 4402 struct vattr obdva, oidva, oadva; 4403 struct vattr nbdva, nidva, nadva; 4404 char *onm, *nnm; 4405 uint_t olen, nlen; 4406 rfs4_file_t *fp, *sfp; 4407 int in_crit_src, in_crit_targ; 4408 int fp_rele_grant_hold, sfp_rele_grant_hold; 4409 bslabel_t *clabel; 4410 struct sockaddr *ca; 4411 char *converted_onm = NULL; 4412 char *converted_nnm = NULL; 4413 nfsstat4 status; 4414 4415 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4416 RENAME4args *, args); 4417 4418 fp = sfp = NULL; 4419 srcvp = targvp = NULL; 4420 in_crit_src = in_crit_targ = 0; 4421 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4422 4423 /* CURRENT_FH: target directory */ 4424 ndvp = cs->vp; 4425 if (ndvp == NULL) { 4426 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4427 goto out; 4428 } 4429 4430 /* SAVED_FH: from directory */ 4431 odvp = cs->saved_vp; 4432 if (odvp == NULL) { 4433 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4434 goto out; 4435 } 4436 4437 if (cs->access == CS_ACCESS_DENIED) { 4438 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4439 goto out; 4440 } 4441 4442 /* 4443 * If there is an unshared filesystem mounted on this vnode, 4444 * do not allow to rename objects in this directory. 4445 */ 4446 if (vn_ismntpt(odvp)) { 4447 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4448 goto out; 4449 } 4450 4451 /* 4452 * If there is an unshared filesystem mounted on this vnode, 4453 * do not allow to rename to this directory. 4454 */ 4455 if (vn_ismntpt(ndvp)) { 4456 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4457 goto out; 4458 } 4459 4460 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4461 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4462 goto out; 4463 } 4464 4465 if (cs->saved_exi != cs->exi) { 4466 *cs->statusp = resp->status = NFS4ERR_XDEV; 4467 goto out; 4468 } 4469 4470 status = utf8_dir_verify(&args->oldname); 4471 if (status != NFS4_OK) { 4472 *cs->statusp = resp->status = status; 4473 goto out; 4474 } 4475 4476 status = utf8_dir_verify(&args->newname); 4477 if (status != NFS4_OK) { 4478 *cs->statusp = resp->status = status; 4479 goto out; 4480 } 4481 4482 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4483 if (onm == NULL) { 4484 *cs->statusp = resp->status = NFS4ERR_INVAL; 4485 goto out; 4486 } 4487 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4488 nlen = MAXPATHLEN + 1; 4489 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, 4490 nlen); 4491 4492 if (converted_onm == NULL) { 4493 *cs->statusp = resp->status = NFS4ERR_INVAL; 4494 kmem_free(onm, olen); 4495 goto out; 4496 } 4497 4498 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4499 if (nnm == NULL) { 4500 *cs->statusp = resp->status = NFS4ERR_INVAL; 4501 if (onm != converted_onm) 4502 kmem_free(converted_onm, MAXPATHLEN + 1); 4503 kmem_free(onm, olen); 4504 goto out; 4505 } 4506 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, 4507 MAXPATHLEN + 1); 4508 4509 if (converted_nnm == NULL) { 4510 *cs->statusp = resp->status = NFS4ERR_INVAL; 4511 kmem_free(nnm, nlen); 4512 nnm = NULL; 4513 if (onm != converted_onm) 4514 kmem_free(converted_onm, MAXPATHLEN + 1); 4515 kmem_free(onm, olen); 4516 goto out; 4517 } 4518 4519 4520 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4521 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4522 kmem_free(onm, olen); 4523 kmem_free(nnm, nlen); 4524 goto out; 4525 } 4526 4527 4528 if (rdonly4(req, cs)) { 4529 *cs->statusp = resp->status = NFS4ERR_ROFS; 4530 if (onm != converted_onm) 4531 kmem_free(converted_onm, MAXPATHLEN + 1); 4532 kmem_free(onm, olen); 4533 if (nnm != converted_nnm) 4534 kmem_free(converted_nnm, MAXPATHLEN + 1); 4535 kmem_free(nnm, nlen); 4536 goto out; 4537 } 4538 4539 /* check label of the target dir */ 4540 if (is_system_labeled()) { 4541 ASSERT(req->rq_label != NULL); 4542 clabel = req->rq_label; 4543 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4544 "got client label from request(1)", 4545 struct svc_req *, req); 4546 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4547 if (!do_rfs_label_check(clabel, ndvp, 4548 EQUALITY_CHECK, cs->exi)) { 4549 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4550 goto err_out; 4551 } 4552 } 4553 } 4554 4555 /* 4556 * Is the source a file and have a delegation? 4557 * We don't need to acquire va_seq before these lookups, if 4558 * it causes an update, cinfo.before will not match, which will 4559 * trigger a cache flush even if atomic is TRUE. 4560 */ 4561 if (sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, 4562 &error, cs->cr)) { 4563 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4564 NULL)) { 4565 *cs->statusp = resp->status = NFS4ERR_DELAY; 4566 goto err_out; 4567 } 4568 } 4569 4570 if (srcvp == NULL) { 4571 *cs->statusp = resp->status = puterrno4(error); 4572 if (onm != converted_onm) 4573 kmem_free(converted_onm, MAXPATHLEN + 1); 4574 kmem_free(onm, olen); 4575 if (nnm != converted_nnm) 4576 kmem_free(converted_nnm, MAXPATHLEN + 1); 4577 kmem_free(nnm, nlen); 4578 goto out; 4579 } 4580 4581 sfp_rele_grant_hold = 1; 4582 4583 /* Does the destination exist and a file and have a delegation? */ 4584 if (fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, 4585 NULL, cs->cr)) { 4586 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4587 NULL)) { 4588 *cs->statusp = resp->status = NFS4ERR_DELAY; 4589 goto err_out; 4590 } 4591 } 4592 fp_rele_grant_hold = 1; 4593 4594 4595 /* Check for NBMAND lock on both source and target */ 4596 if (nbl_need_check(srcvp)) { 4597 nbl_start_crit(srcvp, RW_READER); 4598 in_crit_src = 1; 4599 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4600 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4601 goto err_out; 4602 } 4603 } 4604 4605 if (targvp && nbl_need_check(targvp)) { 4606 nbl_start_crit(targvp, RW_READER); 4607 in_crit_targ = 1; 4608 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4609 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4610 goto err_out; 4611 } 4612 } 4613 4614 /* Get source "before" change value */ 4615 obdva.va_mask = AT_CTIME|AT_SEQ; 4616 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4617 if (!error) { 4618 nbdva.va_mask = AT_CTIME|AT_SEQ; 4619 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4620 } 4621 if (error) { 4622 *cs->statusp = resp->status = puterrno4(error); 4623 goto err_out; 4624 } 4625 4626 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4627 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4628 4629 if ((error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, 4630 cs->cr, NULL, 0)) == 0 && fp != NULL) { 4631 struct vattr va; 4632 vnode_t *tvp; 4633 4634 rfs4_dbe_lock(fp->rf_dbe); 4635 tvp = fp->rf_vp; 4636 if (tvp) 4637 VN_HOLD(tvp); 4638 rfs4_dbe_unlock(fp->rf_dbe); 4639 4640 if (tvp) { 4641 va.va_mask = AT_NLINK; 4642 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4643 va.va_nlink == 0) { 4644 /* The file is gone and so should the state */ 4645 if (in_crit_targ) { 4646 nbl_end_crit(targvp); 4647 in_crit_targ = 0; 4648 } 4649 rfs4_close_all_state(fp); 4650 } 4651 VN_RELE(tvp); 4652 } 4653 } 4654 if (error == 0) 4655 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4656 4657 if (in_crit_src) 4658 nbl_end_crit(srcvp); 4659 if (srcvp) 4660 VN_RELE(srcvp); 4661 if (in_crit_targ) 4662 nbl_end_crit(targvp); 4663 if (targvp) 4664 VN_RELE(targvp); 4665 4666 if (sfp) { 4667 rfs4_clear_dont_grant(sfp); 4668 rfs4_file_rele(sfp); 4669 } 4670 if (fp) { 4671 rfs4_clear_dont_grant(fp); 4672 rfs4_file_rele(fp); 4673 } 4674 4675 if (converted_onm != onm) 4676 kmem_free(converted_onm, MAXPATHLEN + 1); 4677 kmem_free(onm, olen); 4678 if (converted_nnm != nnm) 4679 kmem_free(converted_nnm, MAXPATHLEN + 1); 4680 kmem_free(nnm, nlen); 4681 4682 /* 4683 * Get the initial "after" sequence number, if it fails, set to zero 4684 */ 4685 oidva.va_mask = AT_SEQ; 4686 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4687 oidva.va_seq = 0; 4688 4689 nidva.va_mask = AT_SEQ; 4690 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4691 nidva.va_seq = 0; 4692 4693 /* 4694 * Force modified data and metadata out to stable storage. 4695 */ 4696 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4697 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4698 4699 if (error) { 4700 *cs->statusp = resp->status = puterrno4(error); 4701 goto out; 4702 } 4703 4704 /* 4705 * Get "after" change values, if it fails, simply return the 4706 * before value. 4707 */ 4708 oadva.va_mask = AT_CTIME|AT_SEQ; 4709 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4710 oadva.va_ctime = obdva.va_ctime; 4711 oadva.va_seq = 0; 4712 } 4713 4714 nadva.va_mask = AT_CTIME|AT_SEQ; 4715 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4716 nadva.va_ctime = nbdva.va_ctime; 4717 nadva.va_seq = 0; 4718 } 4719 4720 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4721 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4722 4723 /* 4724 * The cinfo.atomic = TRUE only if we have 4725 * non-zero va_seq's, and it has incremented by exactly one 4726 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4727 */ 4728 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4729 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4730 resp->source_cinfo.atomic = TRUE; 4731 else 4732 resp->source_cinfo.atomic = FALSE; 4733 4734 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4735 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4736 resp->target_cinfo.atomic = TRUE; 4737 else 4738 resp->target_cinfo.atomic = FALSE; 4739 4740 #ifdef VOLATILE_FH_TEST 4741 { 4742 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4743 4744 /* 4745 * Add the renamed file handle to the volatile rename list 4746 */ 4747 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4748 /* file handles may expire on rename */ 4749 vnode_t *vp; 4750 4751 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4752 /* 4753 * Already know that nnm will be a valid string 4754 */ 4755 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4756 NULL, NULL, NULL); 4757 kmem_free(nnm, nlen); 4758 if (!error) { 4759 add_volrnm_fh(cs->exi, vp); 4760 VN_RELE(vp); 4761 } 4762 } 4763 } 4764 #endif /* VOLATILE_FH_TEST */ 4765 4766 *cs->statusp = resp->status = NFS4_OK; 4767 out: 4768 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4769 RENAME4res *, resp); 4770 return; 4771 4772 err_out: 4773 if (onm != converted_onm) 4774 kmem_free(converted_onm, MAXPATHLEN + 1); 4775 if (onm != NULL) 4776 kmem_free(onm, olen); 4777 if (nnm != converted_nnm) 4778 kmem_free(converted_nnm, MAXPATHLEN + 1); 4779 if (nnm != NULL) 4780 kmem_free(nnm, nlen); 4781 4782 if (in_crit_src) nbl_end_crit(srcvp); 4783 if (in_crit_targ) nbl_end_crit(targvp); 4784 if (targvp) VN_RELE(targvp); 4785 if (srcvp) VN_RELE(srcvp); 4786 if (sfp) { 4787 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4788 rfs4_file_rele(sfp); 4789 } 4790 if (fp) { 4791 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4792 rfs4_file_rele(fp); 4793 } 4794 4795 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4796 RENAME4res *, resp); 4797 } 4798 4799 /* ARGSUSED */ 4800 static void 4801 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4802 struct compound_state *cs) 4803 { 4804 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4805 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4806 rfs4_client_t *cp; 4807 4808 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4809 RENEW4args *, args); 4810 4811 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4812 *cs->statusp = resp->status = 4813 rfs4_check_clientid(&args->clientid, 0); 4814 goto out; 4815 } 4816 4817 if (rfs4_lease_expired(cp)) { 4818 rfs4_client_rele(cp); 4819 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4820 goto out; 4821 } 4822 4823 rfs4_update_lease(cp); 4824 4825 mutex_enter(cp->rc_cbinfo.cb_lock); 4826 if (cp->rc_cbinfo.cb_notified_of_cb_path_down == FALSE) { 4827 cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE; 4828 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4829 } else { 4830 *cs->statusp = resp->status = NFS4_OK; 4831 } 4832 mutex_exit(cp->rc_cbinfo.cb_lock); 4833 4834 rfs4_client_rele(cp); 4835 4836 out: 4837 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4838 RENEW4res *, resp); 4839 } 4840 4841 /* ARGSUSED */ 4842 static void 4843 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4844 struct compound_state *cs) 4845 { 4846 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4847 4848 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4849 4850 /* No need to check cs->access - we are not accessing any object */ 4851 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4852 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4853 goto out; 4854 } 4855 if (cs->vp != NULL) { 4856 VN_RELE(cs->vp); 4857 } 4858 cs->vp = cs->saved_vp; 4859 cs->saved_vp = NULL; 4860 cs->exi = cs->saved_exi; 4861 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4862 *cs->statusp = resp->status = NFS4_OK; 4863 cs->deleg = FALSE; 4864 4865 out: 4866 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4867 RESTOREFH4res *, resp); 4868 } 4869 4870 /* ARGSUSED */ 4871 static void 4872 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4873 struct compound_state *cs) 4874 { 4875 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4876 4877 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4878 4879 /* No need to check cs->access - we are not accessing any object */ 4880 if (cs->vp == NULL) { 4881 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4882 goto out; 4883 } 4884 if (cs->saved_vp != NULL) { 4885 VN_RELE(cs->saved_vp); 4886 } 4887 cs->saved_vp = cs->vp; 4888 VN_HOLD(cs->saved_vp); 4889 cs->saved_exi = cs->exi; 4890 /* 4891 * since SAVEFH is fairly rare, don't alloc space for its fh 4892 * unless necessary. 4893 */ 4894 if (cs->saved_fh.nfs_fh4_val == NULL) { 4895 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4896 } 4897 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4898 *cs->statusp = resp->status = NFS4_OK; 4899 4900 out: 4901 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4902 SAVEFH4res *, resp); 4903 } 4904 4905 /* 4906 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4907 * return the bitmap of attrs that were set successfully. It is also 4908 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4909 * always be called only after rfs4_do_set_attrs(). 4910 * 4911 * Verify that the attributes are same as the expected ones. sargp->vap 4912 * and sargp->sbp contain the input attributes as translated from fattr4. 4913 * 4914 * This function verifies only the attrs that correspond to a vattr or 4915 * vfsstat struct. That is because of the extra step needed to get the 4916 * corresponding system structs. Other attributes have already been set or 4917 * verified by do_rfs4_set_attrs. 4918 * 4919 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4920 */ 4921 static int 4922 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4923 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4924 { 4925 int error, ret_error = 0; 4926 int i, k; 4927 uint_t sva_mask = sargp->vap->va_mask; 4928 uint_t vbit; 4929 union nfs4_attr_u *na; 4930 uint8_t *amap; 4931 bool_t getsb = ntovp->vfsstat; 4932 4933 if (sva_mask != 0) { 4934 /* 4935 * Okay to overwrite sargp->vap because we verify based 4936 * on the incoming values. 4937 */ 4938 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4939 sargp->cs->cr, NULL); 4940 if (ret_error) { 4941 if (resp == NULL) 4942 return (ret_error); 4943 /* 4944 * Must return bitmap of successful attrs 4945 */ 4946 sva_mask = 0; /* to prevent checking vap later */ 4947 } else { 4948 /* 4949 * Some file systems clobber va_mask. it is probably 4950 * wrong of them to do so, nonethless we practice 4951 * defensive coding. 4952 * See bug id 4276830. 4953 */ 4954 sargp->vap->va_mask = sva_mask; 4955 } 4956 } 4957 4958 if (getsb) { 4959 /* 4960 * Now get the superblock and loop on the bitmap, as there is 4961 * no simple way of translating from superblock to bitmap4. 4962 */ 4963 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4964 if (ret_error) { 4965 if (resp == NULL) 4966 goto errout; 4967 getsb = FALSE; 4968 } 4969 } 4970 4971 /* 4972 * Now loop and verify each attribute which getattr returned 4973 * whether it's the same as the input. 4974 */ 4975 if (resp == NULL && !getsb && (sva_mask == 0)) 4976 goto errout; 4977 4978 na = ntovp->na; 4979 amap = ntovp->amap; 4980 k = 0; 4981 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4982 k = *amap; 4983 ASSERT(nfs4_ntov_map[k].nval == k); 4984 vbit = nfs4_ntov_map[k].vbit; 4985 4986 /* 4987 * If vattr attribute but VOP_GETATTR failed, or it's 4988 * superblock attribute but VFS_STATVFS failed, skip 4989 */ 4990 if (vbit) { 4991 if ((vbit & sva_mask) == 0) 4992 continue; 4993 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4994 continue; 4995 } 4996 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 4997 if (resp != NULL) { 4998 if (error) 4999 ret_error = -1; /* not all match */ 5000 else /* update response bitmap */ 5001 *resp |= nfs4_ntov_map[k].fbit; 5002 continue; 5003 } 5004 if (error) { 5005 ret_error = -1; /* not all match */ 5006 break; 5007 } 5008 } 5009 errout: 5010 return (ret_error); 5011 } 5012 5013 /* 5014 * Decode the attribute to be set/verified. If the attr requires a sys op 5015 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 5016 * call the sv_getit function for it, because the sys op hasn't yet been done. 5017 * Return 0 for success, error code if failed. 5018 * 5019 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 5020 */ 5021 static int 5022 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 5023 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 5024 { 5025 int error = 0; 5026 bool_t set_later; 5027 5028 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 5029 5030 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 5031 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 5032 /* 5033 * don't verify yet if a vattr or sb dependent attr, 5034 * because we don't have their sys values yet. 5035 * Will be done later. 5036 */ 5037 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 5038 /* 5039 * ACLs are a special case, since setting the MODE 5040 * conflicts with setting the ACL. We delay setting 5041 * the ACL until all other attributes have been set. 5042 * The ACL gets set in do_rfs4_op_setattr(). 5043 */ 5044 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 5045 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 5046 sargp, nap); 5047 if (error) { 5048 xdr_free(nfs4_ntov_map[k].xfunc, 5049 (caddr_t)nap); 5050 } 5051 } 5052 } 5053 } else { 5054 #ifdef DEBUG 5055 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 5056 "decoding attribute %d\n", k); 5057 #endif 5058 error = EINVAL; 5059 } 5060 if (!error && resp_bval && !set_later) { 5061 *resp_bval |= nfs4_ntov_map[k].fbit; 5062 } 5063 5064 return (error); 5065 } 5066 5067 /* 5068 * Set vattr based on incoming fattr4 attrs - used by setattr. 5069 * Set response mask. Ignore any values that are not writable vattr attrs. 5070 */ 5071 static nfsstat4 5072 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5073 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 5074 nfs4_attr_cmd_t cmd) 5075 { 5076 int error = 0; 5077 int i; 5078 char *attrs = fattrp->attrlist4; 5079 uint32_t attrslen = fattrp->attrlist4_len; 5080 XDR xdr; 5081 nfsstat4 status = NFS4_OK; 5082 vnode_t *vp = cs->vp; 5083 union nfs4_attr_u *na; 5084 uint8_t *amap; 5085 5086 #ifndef lint 5087 /* 5088 * Make sure that maximum attribute number can be expressed as an 5089 * 8 bit quantity. 5090 */ 5091 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 5092 #endif 5093 5094 if (vp == NULL) { 5095 if (resp) 5096 *resp = 0; 5097 return (NFS4ERR_NOFILEHANDLE); 5098 } 5099 if (cs->access == CS_ACCESS_DENIED) { 5100 if (resp) 5101 *resp = 0; 5102 return (NFS4ERR_ACCESS); 5103 } 5104 5105 sargp->op = cmd; 5106 sargp->cs = cs; 5107 sargp->flag = 0; /* may be set later */ 5108 sargp->vap->va_mask = 0; 5109 sargp->rdattr_error = NFS4_OK; 5110 sargp->rdattr_error_req = FALSE; 5111 /* sargp->sbp is set by the caller */ 5112 5113 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 5114 5115 na = ntovp->na; 5116 amap = ntovp->amap; 5117 5118 /* 5119 * The following loop iterates on the nfs4_ntov_map checking 5120 * if the fbit is set in the requested bitmap. 5121 * If set then we process the arguments using the 5122 * rfs4_fattr4 conversion functions to populate the setattr 5123 * vattr and va_mask. Any settable attrs that are not using vattr 5124 * will be set in this loop. 5125 */ 5126 for (i = 0; i < nfs4_ntov_map_size; i++) { 5127 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 5128 continue; 5129 } 5130 /* 5131 * If setattr, must be a writable attr. 5132 * If verify/nverify, must be a readable attr. 5133 */ 5134 if ((error = (*nfs4_ntov_map[i].sv_getit)( 5135 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 5136 /* 5137 * Client tries to set/verify an 5138 * unsupported attribute, tries to set 5139 * a read only attr or verify a write 5140 * only one - error! 5141 */ 5142 break; 5143 } 5144 /* 5145 * Decode the attribute to set/verify 5146 */ 5147 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 5148 &xdr, resp ? resp : NULL, na); 5149 if (error) 5150 break; 5151 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 5152 na++; 5153 (ntovp->attrcnt)++; 5154 if (nfs4_ntov_map[i].vfsstat) 5155 ntovp->vfsstat = TRUE; 5156 } 5157 5158 if (error != 0) 5159 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 5160 puterrno4(error)); 5161 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 5162 return (status); 5163 } 5164 5165 static nfsstat4 5166 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5167 stateid4 *stateid) 5168 { 5169 int error = 0; 5170 struct nfs4_svgetit_arg sarg; 5171 bool_t trunc; 5172 5173 nfsstat4 status = NFS4_OK; 5174 cred_t *cr = cs->cr; 5175 vnode_t *vp = cs->vp; 5176 struct nfs4_ntov_table ntov; 5177 struct statvfs64 sb; 5178 struct vattr bva; 5179 struct flock64 bf; 5180 int in_crit = 0; 5181 uint_t saved_mask = 0; 5182 caller_context_t ct; 5183 5184 *resp = 0; 5185 sarg.sbp = &sb; 5186 sarg.is_referral = B_FALSE; 5187 nfs4_ntov_table_init(&ntov); 5188 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 5189 NFS4ATTR_SETIT); 5190 if (status != NFS4_OK) { 5191 /* 5192 * failed set attrs 5193 */ 5194 goto done; 5195 } 5196 if ((sarg.vap->va_mask == 0) && 5197 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 5198 /* 5199 * no further work to be done 5200 */ 5201 goto done; 5202 } 5203 5204 /* 5205 * If we got a request to set the ACL and the MODE, only 5206 * allow changing VSUID, VSGID, and VSVTX. Attempting 5207 * to change any other bits, along with setting an ACL, 5208 * gives NFS4ERR_INVAL. 5209 */ 5210 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 5211 (fattrp->attrmask & FATTR4_MODE_MASK)) { 5212 vattr_t va; 5213 5214 va.va_mask = AT_MODE; 5215 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 5216 if (error) { 5217 status = puterrno4(error); 5218 goto done; 5219 } 5220 if ((sarg.vap->va_mode ^ va.va_mode) & 5221 ~(VSUID | VSGID | VSVTX)) { 5222 status = NFS4ERR_INVAL; 5223 goto done; 5224 } 5225 } 5226 5227 /* Check stateid only if size has been set */ 5228 if (sarg.vap->va_mask & AT_SIZE) { 5229 trunc = (sarg.vap->va_size == 0); 5230 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 5231 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 5232 if (status != NFS4_OK) 5233 goto done; 5234 } else { 5235 ct.cc_sysid = 0; 5236 ct.cc_pid = 0; 5237 ct.cc_caller_id = nfs4_srv_caller_id; 5238 ct.cc_flags = CC_DONTBLOCK; 5239 } 5240 5241 /* XXX start of possible race with delegations */ 5242 5243 /* 5244 * We need to specially handle size changes because it is 5245 * possible for the client to create a file with read-only 5246 * modes, but with the file opened for writing. If the client 5247 * then tries to set the file size, e.g. ftruncate(3C), 5248 * fcntl(F_FREESP), the normal access checking done in 5249 * VOP_SETATTR would prevent the client from doing it even though 5250 * it should be allowed to do so. To get around this, we do the 5251 * access checking for ourselves and use VOP_SPACE which doesn't 5252 * do the access checking. 5253 * Also the client should not be allowed to change the file 5254 * size if there is a conflicting non-blocking mandatory lock in 5255 * the region of the change. 5256 */ 5257 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 5258 u_offset_t offset; 5259 ssize_t length; 5260 5261 /* 5262 * ufs_setattr clears AT_SIZE from vap->va_mask, but 5263 * before returning, sarg.vap->va_mask is used to 5264 * generate the setattr reply bitmap. We also clear 5265 * AT_SIZE below before calling VOP_SPACE. For both 5266 * of these cases, the va_mask needs to be saved here 5267 * and restored after calling VOP_SETATTR. 5268 */ 5269 saved_mask = sarg.vap->va_mask; 5270 5271 /* 5272 * Check any possible conflict due to NBMAND locks. 5273 * Get into critical region before VOP_GETATTR, so the 5274 * size attribute is valid when checking conflicts. 5275 */ 5276 if (nbl_need_check(vp)) { 5277 nbl_start_crit(vp, RW_READER); 5278 in_crit = 1; 5279 } 5280 5281 bva.va_mask = AT_UID|AT_SIZE; 5282 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 5283 status = puterrno4(error); 5284 goto done; 5285 } 5286 5287 if (in_crit) { 5288 if (sarg.vap->va_size < bva.va_size) { 5289 offset = sarg.vap->va_size; 5290 length = bva.va_size - sarg.vap->va_size; 5291 } else { 5292 offset = bva.va_size; 5293 length = sarg.vap->va_size - bva.va_size; 5294 } 5295 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 5296 &ct)) { 5297 status = NFS4ERR_LOCKED; 5298 goto done; 5299 } 5300 } 5301 5302 if (crgetuid(cr) == bva.va_uid) { 5303 sarg.vap->va_mask &= ~AT_SIZE; 5304 bf.l_type = F_WRLCK; 5305 bf.l_whence = 0; 5306 bf.l_start = (off64_t)sarg.vap->va_size; 5307 bf.l_len = 0; 5308 bf.l_sysid = 0; 5309 bf.l_pid = 0; 5310 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 5311 (offset_t)sarg.vap->va_size, cr, &ct); 5312 } 5313 } 5314 5315 if (!error && sarg.vap->va_mask != 0) 5316 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 5317 5318 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 5319 if (saved_mask & AT_SIZE) 5320 sarg.vap->va_mask |= AT_SIZE; 5321 5322 /* 5323 * If an ACL was being set, it has been delayed until now, 5324 * in order to set the mode (via the VOP_SETATTR() above) first. 5325 */ 5326 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5327 int i; 5328 5329 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5330 if (ntov.amap[i] == FATTR4_ACL) 5331 break; 5332 if (i < NFS4_MAXNUM_ATTRS) { 5333 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5334 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5335 if (error == 0) { 5336 *resp |= FATTR4_ACL_MASK; 5337 } else if (error == ENOTSUP) { 5338 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5339 status = NFS4ERR_ATTRNOTSUPP; 5340 goto done; 5341 } 5342 } else { 5343 NFS4_DEBUG(rfs4_debug, 5344 (CE_NOTE, "do_rfs4_op_setattr: " 5345 "unable to find ACL in fattr4")); 5346 error = EINVAL; 5347 } 5348 } 5349 5350 if (error) { 5351 /* check if a monitor detected a delegation conflict */ 5352 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5353 status = NFS4ERR_DELAY; 5354 else 5355 status = puterrno4(error); 5356 5357 /* 5358 * Set the response bitmap when setattr failed. 5359 * If VOP_SETATTR partially succeeded, test by doing a 5360 * VOP_GETATTR on the object and comparing the data 5361 * to the setattr arguments. 5362 */ 5363 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5364 } else { 5365 /* 5366 * Force modified metadata out to stable storage. 5367 */ 5368 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5369 /* 5370 * Set response bitmap 5371 */ 5372 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5373 } 5374 5375 /* Return early and already have a NFSv4 error */ 5376 done: 5377 /* 5378 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5379 * conversion sets both readable and writeable NFS4 attrs 5380 * for AT_MTIME and AT_ATIME. The line below masks out 5381 * unrequested attrs from the setattr result bitmap. This 5382 * is placed after the done: label to catch the ATTRNOTSUP 5383 * case. 5384 */ 5385 *resp &= fattrp->attrmask; 5386 5387 if (in_crit) 5388 nbl_end_crit(vp); 5389 5390 nfs4_ntov_table_free(&ntov, &sarg); 5391 5392 return (status); 5393 } 5394 5395 /* ARGSUSED */ 5396 static void 5397 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5398 struct compound_state *cs) 5399 { 5400 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5401 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5402 bslabel_t *clabel; 5403 5404 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5405 SETATTR4args *, args); 5406 5407 if (cs->vp == NULL) { 5408 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5409 goto out; 5410 } 5411 5412 /* 5413 * If there is an unshared filesystem mounted on this vnode, 5414 * do not allow to setattr on this vnode. 5415 */ 5416 if (vn_ismntpt(cs->vp)) { 5417 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5418 goto out; 5419 } 5420 5421 resp->attrsset = 0; 5422 5423 if (rdonly4(req, cs)) { 5424 *cs->statusp = resp->status = NFS4ERR_ROFS; 5425 goto out; 5426 } 5427 5428 /* check label before setting attributes */ 5429 if (is_system_labeled()) { 5430 ASSERT(req->rq_label != NULL); 5431 clabel = req->rq_label; 5432 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5433 "got client label from request(1)", 5434 struct svc_req *, req); 5435 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5436 if (!do_rfs_label_check(clabel, cs->vp, 5437 EQUALITY_CHECK, cs->exi)) { 5438 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5439 goto out; 5440 } 5441 } 5442 } 5443 5444 *cs->statusp = resp->status = 5445 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5446 &args->stateid); 5447 5448 out: 5449 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5450 SETATTR4res *, resp); 5451 } 5452 5453 /* ARGSUSED */ 5454 static void 5455 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5456 struct compound_state *cs) 5457 { 5458 /* 5459 * verify and nverify are exactly the same, except that nverify 5460 * succeeds when some argument changed, and verify succeeds when 5461 * when none changed. 5462 */ 5463 5464 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5465 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5466 5467 int error; 5468 struct nfs4_svgetit_arg sarg; 5469 struct statvfs64 sb; 5470 struct nfs4_ntov_table ntov; 5471 5472 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5473 VERIFY4args *, args); 5474 5475 if (cs->vp == NULL) { 5476 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5477 goto out; 5478 } 5479 5480 sarg.sbp = &sb; 5481 sarg.is_referral = B_FALSE; 5482 nfs4_ntov_table_init(&ntov); 5483 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5484 &sarg, &ntov, NFS4ATTR_VERIT); 5485 if (resp->status != NFS4_OK) { 5486 /* 5487 * do_rfs4_set_attrs will try to verify systemwide attrs, 5488 * so could return -1 for "no match". 5489 */ 5490 if (resp->status == -1) 5491 resp->status = NFS4ERR_NOT_SAME; 5492 goto done; 5493 } 5494 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5495 switch (error) { 5496 case 0: 5497 resp->status = NFS4_OK; 5498 break; 5499 case -1: 5500 resp->status = NFS4ERR_NOT_SAME; 5501 break; 5502 default: 5503 resp->status = puterrno4(error); 5504 break; 5505 } 5506 done: 5507 *cs->statusp = resp->status; 5508 nfs4_ntov_table_free(&ntov, &sarg); 5509 out: 5510 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5511 VERIFY4res *, resp); 5512 } 5513 5514 /* ARGSUSED */ 5515 static void 5516 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5517 struct compound_state *cs) 5518 { 5519 /* 5520 * verify and nverify are exactly the same, except that nverify 5521 * succeeds when some argument changed, and verify succeeds when 5522 * when none changed. 5523 */ 5524 5525 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5526 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5527 5528 int error; 5529 struct nfs4_svgetit_arg sarg; 5530 struct statvfs64 sb; 5531 struct nfs4_ntov_table ntov; 5532 5533 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5534 NVERIFY4args *, args); 5535 5536 if (cs->vp == NULL) { 5537 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5538 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5539 NVERIFY4res *, resp); 5540 return; 5541 } 5542 sarg.sbp = &sb; 5543 sarg.is_referral = B_FALSE; 5544 nfs4_ntov_table_init(&ntov); 5545 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5546 &sarg, &ntov, NFS4ATTR_VERIT); 5547 if (resp->status != NFS4_OK) { 5548 /* 5549 * do_rfs4_set_attrs will try to verify systemwide attrs, 5550 * so could return -1 for "no match". 5551 */ 5552 if (resp->status == -1) 5553 resp->status = NFS4_OK; 5554 goto done; 5555 } 5556 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5557 switch (error) { 5558 case 0: 5559 resp->status = NFS4ERR_SAME; 5560 break; 5561 case -1: 5562 resp->status = NFS4_OK; 5563 break; 5564 default: 5565 resp->status = puterrno4(error); 5566 break; 5567 } 5568 done: 5569 *cs->statusp = resp->status; 5570 nfs4_ntov_table_free(&ntov, &sarg); 5571 5572 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5573 NVERIFY4res *, resp); 5574 } 5575 5576 /* 5577 * XXX - This should live in an NFS header file. 5578 */ 5579 #define MAX_IOVECS 12 5580 5581 /* ARGSUSED */ 5582 static void 5583 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5584 struct compound_state *cs) 5585 { 5586 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5587 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5588 int error; 5589 vnode_t *vp; 5590 struct vattr bva; 5591 u_offset_t rlimit; 5592 struct uio uio; 5593 struct iovec iov[MAX_IOVECS]; 5594 struct iovec *iovp; 5595 int iovcnt; 5596 int ioflag; 5597 cred_t *savecred, *cr; 5598 bool_t *deleg = &cs->deleg; 5599 nfsstat4 stat; 5600 int in_crit = 0; 5601 caller_context_t ct; 5602 5603 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5604 WRITE4args *, args); 5605 5606 vp = cs->vp; 5607 if (vp == NULL) { 5608 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5609 goto out; 5610 } 5611 if (cs->access == CS_ACCESS_DENIED) { 5612 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5613 goto out; 5614 } 5615 5616 cr = cs->cr; 5617 5618 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5619 deleg, TRUE, &ct)) != NFS4_OK) { 5620 *cs->statusp = resp->status = stat; 5621 goto out; 5622 } 5623 5624 /* 5625 * We have to enter the critical region before calling VOP_RWLOCK 5626 * to avoid a deadlock with ufs. 5627 */ 5628 if (nbl_need_check(vp)) { 5629 nbl_start_crit(vp, RW_READER); 5630 in_crit = 1; 5631 if (nbl_conflict(vp, NBL_WRITE, 5632 args->offset, args->data_len, 0, &ct)) { 5633 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5634 goto out; 5635 } 5636 } 5637 5638 bva.va_mask = AT_MODE | AT_UID; 5639 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5640 5641 /* 5642 * If we can't get the attributes, then we can't do the 5643 * right access checking. So, we'll fail the request. 5644 */ 5645 if (error) { 5646 *cs->statusp = resp->status = puterrno4(error); 5647 goto out; 5648 } 5649 5650 if (rdonly4(req, cs)) { 5651 *cs->statusp = resp->status = NFS4ERR_ROFS; 5652 goto out; 5653 } 5654 5655 if (vp->v_type != VREG) { 5656 *cs->statusp = resp->status = 5657 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5658 goto out; 5659 } 5660 5661 if (crgetuid(cr) != bva.va_uid && 5662 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5663 *cs->statusp = resp->status = puterrno4(error); 5664 goto out; 5665 } 5666 5667 if (MANDLOCK(vp, bva.va_mode)) { 5668 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5669 goto out; 5670 } 5671 5672 if (args->data_len == 0) { 5673 *cs->statusp = resp->status = NFS4_OK; 5674 resp->count = 0; 5675 resp->committed = args->stable; 5676 resp->writeverf = Write4verf; 5677 goto out; 5678 } 5679 5680 if (args->mblk != NULL) { 5681 mblk_t *m; 5682 uint_t bytes, round_len; 5683 5684 iovcnt = 0; 5685 bytes = 0; 5686 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5687 for (m = args->mblk; 5688 m != NULL && bytes < round_len; 5689 m = m->b_cont) { 5690 iovcnt++; 5691 bytes += MBLKL(m); 5692 } 5693 #ifdef DEBUG 5694 /* should have ended on an mblk boundary */ 5695 if (bytes != round_len) { 5696 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5697 bytes, round_len, args->data_len); 5698 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5699 (void *)args->mblk, (void *)m); 5700 ASSERT(bytes == round_len); 5701 } 5702 #endif 5703 if (iovcnt <= MAX_IOVECS) { 5704 iovp = iov; 5705 } else { 5706 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5707 } 5708 mblk_to_iov(args->mblk, iovcnt, iovp); 5709 } else if (args->rlist != NULL) { 5710 iovcnt = 1; 5711 iovp = iov; 5712 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); 5713 iovp->iov_len = args->data_len; 5714 } else { 5715 iovcnt = 1; 5716 iovp = iov; 5717 iovp->iov_base = args->data_val; 5718 iovp->iov_len = args->data_len; 5719 } 5720 5721 uio.uio_iov = iovp; 5722 uio.uio_iovcnt = iovcnt; 5723 5724 uio.uio_segflg = UIO_SYSSPACE; 5725 uio.uio_extflg = UIO_COPY_DEFAULT; 5726 uio.uio_loffset = args->offset; 5727 uio.uio_resid = args->data_len; 5728 uio.uio_llimit = curproc->p_fsz_ctl; 5729 rlimit = uio.uio_llimit - args->offset; 5730 if (rlimit < (u_offset_t)uio.uio_resid) 5731 uio.uio_resid = (int)rlimit; 5732 5733 if (args->stable == UNSTABLE4) 5734 ioflag = 0; 5735 else if (args->stable == FILE_SYNC4) 5736 ioflag = FSYNC; 5737 else if (args->stable == DATA_SYNC4) 5738 ioflag = FDSYNC; 5739 else { 5740 if (iovp != iov) 5741 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5742 *cs->statusp = resp->status = NFS4ERR_INVAL; 5743 goto out; 5744 } 5745 5746 /* 5747 * We're changing creds because VM may fault and we need 5748 * the cred of the current thread to be used if quota 5749 * checking is enabled. 5750 */ 5751 savecred = curthread->t_cred; 5752 curthread->t_cred = cr; 5753 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5754 curthread->t_cred = savecred; 5755 5756 if (iovp != iov) 5757 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5758 5759 if (error) { 5760 *cs->statusp = resp->status = puterrno4(error); 5761 goto out; 5762 } 5763 5764 *cs->statusp = resp->status = NFS4_OK; 5765 resp->count = args->data_len - uio.uio_resid; 5766 5767 if (ioflag == 0) 5768 resp->committed = UNSTABLE4; 5769 else 5770 resp->committed = FILE_SYNC4; 5771 5772 resp->writeverf = Write4verf; 5773 5774 out: 5775 if (in_crit) 5776 nbl_end_crit(vp); 5777 5778 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5779 WRITE4res *, resp); 5780 } 5781 5782 5783 /* XXX put in a header file */ 5784 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5785 5786 void 5787 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5788 struct svc_req *req, cred_t *cr, int *rv) 5789 { 5790 uint_t i; 5791 struct compound_state cs; 5792 5793 if (rv != NULL) 5794 *rv = 0; 5795 rfs4_init_compound_state(&cs); 5796 /* 5797 * Form a reply tag by copying over the reqeuest tag. 5798 */ 5799 resp->tag.utf8string_val = 5800 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5801 resp->tag.utf8string_len = args->tag.utf8string_len; 5802 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5803 resp->tag.utf8string_len); 5804 5805 cs.statusp = &resp->status; 5806 cs.req = req; 5807 resp->array = NULL; 5808 resp->array_len = 0; 5809 5810 /* 5811 * XXX for now, minorversion should be zero 5812 */ 5813 if (args->minorversion != NFS4_MINORVERSION) { 5814 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5815 &cs, COMPOUND4args *, args); 5816 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5817 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5818 &cs, COMPOUND4res *, resp); 5819 return; 5820 } 5821 5822 if (args->array_len == 0) { 5823 resp->status = NFS4_OK; 5824 return; 5825 } 5826 5827 ASSERT(exi == NULL); 5828 ASSERT(cr == NULL); 5829 5830 cr = crget(); 5831 ASSERT(cr != NULL); 5832 5833 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5834 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5835 &cs, COMPOUND4args *, args); 5836 crfree(cr); 5837 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5838 &cs, COMPOUND4res *, resp); 5839 svcerr_badcred(req->rq_xprt); 5840 if (rv != NULL) 5841 *rv = 1; 5842 return; 5843 } 5844 resp->array_len = args->array_len; 5845 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5846 KM_SLEEP); 5847 5848 cs.basecr = cr; 5849 5850 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5851 COMPOUND4args *, args); 5852 5853 /* 5854 * For now, NFS4 compound processing must be protected by 5855 * exported_lock because it can access more than one exportinfo 5856 * per compound and share/unshare can now change multiple 5857 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5858 * per proc (excluding public exinfo), and exi_count design 5859 * is sufficient to protect concurrent execution of NFS2/3 5860 * ops along with unexport. This lock will be removed as 5861 * part of the NFSv4 phase 2 namespace redesign work. 5862 */ 5863 rw_enter(&exported_lock, RW_READER); 5864 5865 /* 5866 * If this is the first compound we've seen, we need to start all 5867 * new instances' grace periods. 5868 */ 5869 if (rfs4_seen_first_compound == 0) { 5870 rfs4_grace_start_new(); 5871 /* 5872 * This must be set after rfs4_grace_start_new(), otherwise 5873 * another thread could proceed past here before the former 5874 * is finished. 5875 */ 5876 rfs4_seen_first_compound = 1; 5877 } 5878 5879 for (i = 0; i < args->array_len && cs.cont; i++) { 5880 nfs_argop4 *argop; 5881 nfs_resop4 *resop; 5882 uint_t op; 5883 5884 argop = &args->array[i]; 5885 resop = &resp->array[i]; 5886 resop->resop = argop->argop; 5887 op = (uint_t)resop->resop; 5888 5889 if (op < rfsv4disp_cnt) { 5890 kstat_t *ksp = rfsprocio_v4_ptr[op]; 5891 kstat_t *exi_ksp = NULL; 5892 5893 /* 5894 * Count the individual ops here; NULL and COMPOUND 5895 * are counted in common_dispatch() 5896 */ 5897 rfsproccnt_v4_ptr[op].value.ui64++; 5898 5899 if (ksp != NULL) { 5900 mutex_enter(ksp->ks_lock); 5901 kstat_runq_enter(KSTAT_IO_PTR(ksp)); 5902 mutex_exit(ksp->ks_lock); 5903 } 5904 5905 switch (rfsv4disptab[op].op_type) { 5906 case NFS4_OP_CFH: 5907 resop->exi = cs.exi; 5908 break; 5909 case NFS4_OP_SFH: 5910 resop->exi = cs.saved_exi; 5911 break; 5912 default: 5913 ASSERT(resop->exi == NULL); 5914 break; 5915 } 5916 5917 if (resop->exi != NULL) { 5918 exi_ksp = resop->exi->exi_kstats-> 5919 rfsprocio_v4_ptr[op]; 5920 if (exi_ksp != NULL) { 5921 mutex_enter(exi_ksp->ks_lock); 5922 kstat_runq_enter(KSTAT_IO_PTR(exi_ksp)); 5923 mutex_exit(exi_ksp->ks_lock); 5924 } 5925 } 5926 5927 NFS4_DEBUG(rfs4_debug > 1, 5928 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5929 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5930 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5931 rfs4_op_string[op], *cs.statusp)); 5932 if (*cs.statusp != NFS4_OK) 5933 cs.cont = FALSE; 5934 5935 if (rfsv4disptab[op].op_type == NFS4_OP_POSTCFH && 5936 *cs.statusp == NFS4_OK && 5937 (resop->exi = cs.exi) != NULL) { 5938 exi_ksp = resop->exi->exi_kstats-> 5939 rfsprocio_v4_ptr[op]; 5940 } 5941 5942 if (exi_ksp != NULL) { 5943 mutex_enter(exi_ksp->ks_lock); 5944 KSTAT_IO_PTR(exi_ksp)->nwritten += 5945 argop->opsize; 5946 KSTAT_IO_PTR(exi_ksp)->writes++; 5947 if (rfsv4disptab[op].op_type != NFS4_OP_POSTCFH) 5948 kstat_runq_exit(KSTAT_IO_PTR(exi_ksp)); 5949 mutex_exit(exi_ksp->ks_lock); 5950 5951 exi_hold(resop->exi); 5952 } else { 5953 resop->exi = NULL; 5954 } 5955 5956 if (ksp != NULL) { 5957 mutex_enter(ksp->ks_lock); 5958 kstat_runq_exit(KSTAT_IO_PTR(ksp)); 5959 mutex_exit(ksp->ks_lock); 5960 } 5961 } else { 5962 /* 5963 * This is effectively dead code since XDR code 5964 * will have already returned BADXDR if op doesn't 5965 * decode to legal value. This only done for a 5966 * day when XDR code doesn't verify v4 opcodes. 5967 */ 5968 op = OP_ILLEGAL; 5969 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5970 5971 rfs4_op_illegal(argop, resop, req, &cs); 5972 cs.cont = FALSE; 5973 } 5974 5975 /* 5976 * If not at last op, and if we are to stop, then 5977 * compact the results array. 5978 */ 5979 if ((i + 1) < args->array_len && !cs.cont) { 5980 nfs_resop4 *new_res = kmem_alloc( 5981 (i + 1) * sizeof (nfs_resop4), KM_SLEEP); 5982 bcopy(resp->array, 5983 new_res, (i + 1) * sizeof (nfs_resop4)); 5984 kmem_free(resp->array, 5985 args->array_len * sizeof (nfs_resop4)); 5986 5987 resp->array_len = i + 1; 5988 resp->array = new_res; 5989 } 5990 } 5991 5992 rw_exit(&exported_lock); 5993 5994 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5995 COMPOUND4res *, resp); 5996 5997 if (cs.vp) 5998 VN_RELE(cs.vp); 5999 if (cs.saved_vp) 6000 VN_RELE(cs.saved_vp); 6001 if (cs.saved_fh.nfs_fh4_val) 6002 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 6003 6004 if (cs.basecr) 6005 crfree(cs.basecr); 6006 if (cs.cr) 6007 crfree(cs.cr); 6008 /* 6009 * done with this compound request, free the label 6010 */ 6011 6012 if (req->rq_label != NULL) { 6013 kmem_free(req->rq_label, sizeof (bslabel_t)); 6014 req->rq_label = NULL; 6015 } 6016 } 6017 6018 /* 6019 * XXX because of what appears to be duplicate calls to rfs4_compound_free 6020 * XXX zero out the tag and array values. Need to investigate why the 6021 * XXX calls occur, but at least prevent the panic for now. 6022 */ 6023 void 6024 rfs4_compound_free(COMPOUND4res *resp) 6025 { 6026 uint_t i; 6027 6028 if (resp->tag.utf8string_val) { 6029 UTF8STRING_FREE(resp->tag) 6030 } 6031 6032 for (i = 0; i < resp->array_len; i++) { 6033 nfs_resop4 *resop; 6034 uint_t op; 6035 6036 resop = &resp->array[i]; 6037 op = (uint_t)resop->resop; 6038 if (op < rfsv4disp_cnt) { 6039 (*rfsv4disptab[op].dis_resfree)(resop); 6040 } 6041 } 6042 if (resp->array != NULL) { 6043 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 6044 } 6045 } 6046 6047 /* 6048 * Process the value of the compound request rpc flags, as a bit-AND 6049 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 6050 */ 6051 void 6052 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 6053 { 6054 int i; 6055 int flag = RPC_ALL; 6056 6057 for (i = 0; flag && i < args->array_len; i++) { 6058 uint_t op; 6059 6060 op = (uint_t)args->array[i].argop; 6061 6062 if (op < rfsv4disp_cnt) 6063 flag &= rfsv4disptab[op].dis_flags; 6064 else 6065 flag = 0; 6066 } 6067 *flagp = flag; 6068 } 6069 6070 void 6071 rfs4_compound_kstat_args(COMPOUND4args *args) 6072 { 6073 int i; 6074 6075 for (i = 0; i < args->array_len; i++) { 6076 uint_t op = (uint_t)args->array[i].argop; 6077 6078 if (op < rfsv4disp_cnt) { 6079 kstat_t *ksp = rfsprocio_v4_ptr[op]; 6080 6081 if (ksp != NULL) { 6082 mutex_enter(ksp->ks_lock); 6083 KSTAT_IO_PTR(ksp)->nwritten += 6084 args->array[i].opsize; 6085 KSTAT_IO_PTR(ksp)->writes++; 6086 mutex_exit(ksp->ks_lock); 6087 } 6088 } 6089 } 6090 } 6091 6092 void 6093 rfs4_compound_kstat_res(COMPOUND4res *res) 6094 { 6095 int i; 6096 6097 for (i = 0; i < res->array_len; i++) { 6098 uint_t op = (uint_t)res->array[i].resop; 6099 6100 if (op < rfsv4disp_cnt) { 6101 kstat_t *ksp = rfsprocio_v4_ptr[op]; 6102 struct exportinfo *exi = res->array[i].exi; 6103 6104 if (ksp != NULL) { 6105 mutex_enter(ksp->ks_lock); 6106 KSTAT_IO_PTR(ksp)->nread += 6107 res->array[i].opsize; 6108 KSTAT_IO_PTR(ksp)->reads++; 6109 mutex_exit(ksp->ks_lock); 6110 } 6111 6112 if (exi != NULL) { 6113 kstat_t *exi_ksp; 6114 6115 rw_enter(&exported_lock, RW_READER); 6116 6117 exi_ksp = exi->exi_kstats->rfsprocio_v4_ptr[op]; 6118 if (exi_ksp != NULL) { 6119 mutex_enter(exi_ksp->ks_lock); 6120 KSTAT_IO_PTR(exi_ksp)->nread += 6121 res->array[i].opsize; 6122 KSTAT_IO_PTR(exi_ksp)->reads++; 6123 mutex_exit(exi_ksp->ks_lock); 6124 } 6125 6126 rw_exit(&exported_lock); 6127 6128 exi_rele(exi); 6129 } 6130 } 6131 } 6132 } 6133 6134 nfsstat4 6135 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 6136 { 6137 nfsstat4 e; 6138 6139 rfs4_dbe_lock(cp->rc_dbe); 6140 6141 if (cp->rc_sysidt != LM_NOSYSID) { 6142 *sp = cp->rc_sysidt; 6143 e = NFS4_OK; 6144 6145 } else if ((cp->rc_sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 6146 *sp = cp->rc_sysidt; 6147 e = NFS4_OK; 6148 6149 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 6150 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 6151 } else 6152 e = NFS4ERR_DELAY; 6153 6154 rfs4_dbe_unlock(cp->rc_dbe); 6155 return (e); 6156 } 6157 6158 #if defined(DEBUG) && ! defined(lint) 6159 static void lock_print(char *str, int operation, struct flock64 *flk) 6160 { 6161 char *op, *type; 6162 6163 switch (operation) { 6164 case F_GETLK: op = "F_GETLK"; 6165 break; 6166 case F_SETLK: op = "F_SETLK"; 6167 break; 6168 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 6169 break; 6170 default: op = "F_UNKNOWN"; 6171 break; 6172 } 6173 switch (flk->l_type) { 6174 case F_UNLCK: type = "F_UNLCK"; 6175 break; 6176 case F_RDLCK: type = "F_RDLCK"; 6177 break; 6178 case F_WRLCK: type = "F_WRLCK"; 6179 break; 6180 default: type = "F_UNKNOWN"; 6181 break; 6182 } 6183 6184 ASSERT(flk->l_whence == 0); 6185 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 6186 str, op, type, (longlong_t)flk->l_start, 6187 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 6188 } 6189 6190 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 6191 #else 6192 #define LOCK_PRINT(d, s, t, f) 6193 #endif 6194 6195 /*ARGSUSED*/ 6196 static bool_t 6197 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 6198 { 6199 return (TRUE); 6200 } 6201 6202 /* 6203 * Look up the pathname using the vp in cs as the directory vnode. 6204 * cs->vp will be the vnode for the file on success 6205 */ 6206 6207 static nfsstat4 6208 rfs4_lookup(component4 *component, struct svc_req *req, 6209 struct compound_state *cs) 6210 { 6211 char *nm; 6212 uint32_t len; 6213 nfsstat4 status; 6214 struct sockaddr *ca; 6215 char *name; 6216 6217 if (cs->vp == NULL) { 6218 return (NFS4ERR_NOFILEHANDLE); 6219 } 6220 if (cs->vp->v_type != VDIR) { 6221 return (NFS4ERR_NOTDIR); 6222 } 6223 6224 status = utf8_dir_verify(component); 6225 if (status != NFS4_OK) 6226 return (status); 6227 6228 nm = utf8_to_fn(component, &len, NULL); 6229 if (nm == NULL) { 6230 return (NFS4ERR_INVAL); 6231 } 6232 6233 if (len > MAXNAMELEN) { 6234 kmem_free(nm, len); 6235 return (NFS4ERR_NAMETOOLONG); 6236 } 6237 6238 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6239 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6240 MAXPATHLEN + 1); 6241 6242 if (name == NULL) { 6243 kmem_free(nm, len); 6244 return (NFS4ERR_INVAL); 6245 } 6246 6247 status = do_rfs4_op_lookup(name, req, cs); 6248 6249 if (name != nm) 6250 kmem_free(name, MAXPATHLEN + 1); 6251 6252 kmem_free(nm, len); 6253 6254 return (status); 6255 } 6256 6257 static nfsstat4 6258 rfs4_lookupfile(component4 *component, struct svc_req *req, 6259 struct compound_state *cs, uint32_t access, change_info4 *cinfo) 6260 { 6261 nfsstat4 status; 6262 vnode_t *dvp = cs->vp; 6263 vattr_t bva, ava, fva; 6264 int error; 6265 6266 /* Get "before" change value */ 6267 bva.va_mask = AT_CTIME|AT_SEQ; 6268 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6269 if (error) 6270 return (puterrno4(error)); 6271 6272 /* rfs4_lookup may VN_RELE directory */ 6273 VN_HOLD(dvp); 6274 6275 status = rfs4_lookup(component, req, cs); 6276 if (status != NFS4_OK) { 6277 VN_RELE(dvp); 6278 return (status); 6279 } 6280 6281 /* 6282 * Get "after" change value, if it fails, simply return the 6283 * before value. 6284 */ 6285 ava.va_mask = AT_CTIME|AT_SEQ; 6286 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6287 ava.va_ctime = bva.va_ctime; 6288 ava.va_seq = 0; 6289 } 6290 VN_RELE(dvp); 6291 6292 /* 6293 * Validate the file is a file 6294 */ 6295 fva.va_mask = AT_TYPE|AT_MODE; 6296 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6297 if (error) 6298 return (puterrno4(error)); 6299 6300 if (fva.va_type != VREG) { 6301 if (fva.va_type == VDIR) 6302 return (NFS4ERR_ISDIR); 6303 if (fva.va_type == VLNK) 6304 return (NFS4ERR_SYMLINK); 6305 return (NFS4ERR_INVAL); 6306 } 6307 6308 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6309 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6310 6311 /* 6312 * It is undefined if VOP_LOOKUP will change va_seq, so 6313 * cinfo.atomic = TRUE only if we have 6314 * non-zero va_seq's, and they have not changed. 6315 */ 6316 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6317 cinfo->atomic = TRUE; 6318 else 6319 cinfo->atomic = FALSE; 6320 6321 /* Check for mandatory locking */ 6322 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6323 return (check_open_access(access, cs, req)); 6324 } 6325 6326 static nfsstat4 6327 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6328 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 6329 { 6330 int error; 6331 nfsstat4 status = NFS4_OK; 6332 vattr_t va; 6333 6334 tryagain: 6335 6336 /* 6337 * The file open mode used is VWRITE. If the client needs 6338 * some other semantic, then it should do the access checking 6339 * itself. It would have been nice to have the file open mode 6340 * passed as part of the arguments. 6341 */ 6342 6343 *created = TRUE; 6344 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6345 6346 if (error) { 6347 *created = FALSE; 6348 6349 /* 6350 * If we got something other than file already exists 6351 * then just return this error. Otherwise, we got 6352 * EEXIST. If we were doing a GUARDED create, then 6353 * just return this error. Otherwise, we need to 6354 * make sure that this wasn't a duplicate of an 6355 * exclusive create request. 6356 * 6357 * The assumption is made that a non-exclusive create 6358 * request will never return EEXIST. 6359 */ 6360 6361 if (error != EEXIST || mode == GUARDED4) { 6362 status = puterrno4(error); 6363 return (status); 6364 } 6365 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6366 NULL, NULL, NULL); 6367 6368 if (error) { 6369 /* 6370 * We couldn't find the file that we thought that 6371 * we just created. So, we'll just try creating 6372 * it again. 6373 */ 6374 if (error == ENOENT) 6375 goto tryagain; 6376 6377 status = puterrno4(error); 6378 return (status); 6379 } 6380 6381 if (mode == UNCHECKED4) { 6382 /* existing object must be regular file */ 6383 if ((*vpp)->v_type != VREG) { 6384 if ((*vpp)->v_type == VDIR) 6385 status = NFS4ERR_ISDIR; 6386 else if ((*vpp)->v_type == VLNK) 6387 status = NFS4ERR_SYMLINK; 6388 else 6389 status = NFS4ERR_INVAL; 6390 VN_RELE(*vpp); 6391 return (status); 6392 } 6393 6394 return (NFS4_OK); 6395 } 6396 6397 /* Check for duplicate request */ 6398 ASSERT(mtime != 0); 6399 va.va_mask = AT_MTIME; 6400 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6401 if (!error) { 6402 /* We found the file */ 6403 if (va.va_mtime.tv_sec != mtime->tv_sec || 6404 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6405 /* but its not our creation */ 6406 VN_RELE(*vpp); 6407 return (NFS4ERR_EXIST); 6408 } 6409 *created = TRUE; /* retrans of create == created */ 6410 return (NFS4_OK); 6411 } 6412 VN_RELE(*vpp); 6413 return (NFS4ERR_EXIST); 6414 } 6415 6416 return (NFS4_OK); 6417 } 6418 6419 static nfsstat4 6420 check_open_access(uint32_t access, struct compound_state *cs, 6421 struct svc_req *req) 6422 { 6423 int error; 6424 vnode_t *vp; 6425 bool_t readonly; 6426 cred_t *cr = cs->cr; 6427 6428 /* For now we don't allow mandatory locking as per V2/V3 */ 6429 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6430 return (NFS4ERR_ACCESS); 6431 } 6432 6433 vp = cs->vp; 6434 ASSERT(cr != NULL && vp->v_type == VREG); 6435 6436 /* 6437 * If the file system is exported read only and we are trying 6438 * to open for write, then return NFS4ERR_ROFS 6439 */ 6440 6441 readonly = rdonly4(req, cs); 6442 6443 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6444 return (NFS4ERR_ROFS); 6445 6446 if (access & OPEN4_SHARE_ACCESS_READ) { 6447 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6448 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6449 return (NFS4ERR_ACCESS); 6450 } 6451 } 6452 6453 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6454 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6455 if (error) 6456 return (NFS4ERR_ACCESS); 6457 } 6458 6459 return (NFS4_OK); 6460 } 6461 6462 static nfsstat4 6463 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6464 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6465 { 6466 struct nfs4_svgetit_arg sarg; 6467 struct nfs4_ntov_table ntov; 6468 6469 bool_t ntov_table_init = FALSE; 6470 struct statvfs64 sb; 6471 nfsstat4 status; 6472 vnode_t *vp; 6473 vattr_t bva, ava, iva, cva, *vap; 6474 vnode_t *dvp; 6475 timespec32_t *mtime; 6476 char *nm = NULL; 6477 uint_t buflen; 6478 bool_t created; 6479 bool_t setsize = FALSE; 6480 len_t reqsize; 6481 int error; 6482 bool_t trunc; 6483 caller_context_t ct; 6484 component4 *component; 6485 bslabel_t *clabel; 6486 struct sockaddr *ca; 6487 char *name = NULL; 6488 6489 sarg.sbp = &sb; 6490 sarg.is_referral = B_FALSE; 6491 6492 dvp = cs->vp; 6493 6494 /* Check if the file system is read only */ 6495 if (rdonly4(req, cs)) 6496 return (NFS4ERR_ROFS); 6497 6498 /* check the label of including directory */ 6499 if (is_system_labeled()) { 6500 ASSERT(req->rq_label != NULL); 6501 clabel = req->rq_label; 6502 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6503 "got client label from request(1)", 6504 struct svc_req *, req); 6505 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6506 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK, 6507 cs->exi)) { 6508 return (NFS4ERR_ACCESS); 6509 } 6510 } 6511 } 6512 6513 /* 6514 * Get the last component of path name in nm. cs will reference 6515 * the including directory on success. 6516 */ 6517 component = &args->open_claim4_u.file; 6518 status = utf8_dir_verify(component); 6519 if (status != NFS4_OK) 6520 return (status); 6521 6522 nm = utf8_to_fn(component, &buflen, NULL); 6523 6524 if (nm == NULL) 6525 return (NFS4ERR_RESOURCE); 6526 6527 if (buflen > MAXNAMELEN) { 6528 kmem_free(nm, buflen); 6529 return (NFS4ERR_NAMETOOLONG); 6530 } 6531 6532 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6533 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6534 if (error) { 6535 kmem_free(nm, buflen); 6536 return (puterrno4(error)); 6537 } 6538 6539 if (bva.va_type != VDIR) { 6540 kmem_free(nm, buflen); 6541 return (NFS4ERR_NOTDIR); 6542 } 6543 6544 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6545 6546 switch (args->mode) { 6547 case GUARDED4: 6548 /*FALLTHROUGH*/ 6549 case UNCHECKED4: 6550 nfs4_ntov_table_init(&ntov); 6551 ntov_table_init = TRUE; 6552 6553 *attrset = 0; 6554 status = do_rfs4_set_attrs(attrset, 6555 &args->createhow4_u.createattrs, 6556 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6557 6558 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6559 sarg.vap->va_type != VREG) { 6560 if (sarg.vap->va_type == VDIR) 6561 status = NFS4ERR_ISDIR; 6562 else if (sarg.vap->va_type == VLNK) 6563 status = NFS4ERR_SYMLINK; 6564 else 6565 status = NFS4ERR_INVAL; 6566 } 6567 6568 if (status != NFS4_OK) { 6569 kmem_free(nm, buflen); 6570 nfs4_ntov_table_free(&ntov, &sarg); 6571 *attrset = 0; 6572 return (status); 6573 } 6574 6575 vap = sarg.vap; 6576 vap->va_type = VREG; 6577 vap->va_mask |= AT_TYPE; 6578 6579 if ((vap->va_mask & AT_MODE) == 0) { 6580 vap->va_mask |= AT_MODE; 6581 vap->va_mode = (mode_t)0600; 6582 } 6583 6584 if (vap->va_mask & AT_SIZE) { 6585 6586 /* Disallow create with a non-zero size */ 6587 6588 if ((reqsize = sarg.vap->va_size) != 0) { 6589 kmem_free(nm, buflen); 6590 nfs4_ntov_table_free(&ntov, &sarg); 6591 *attrset = 0; 6592 return (NFS4ERR_INVAL); 6593 } 6594 setsize = TRUE; 6595 } 6596 break; 6597 6598 case EXCLUSIVE4: 6599 /* prohibit EXCL create of named attributes */ 6600 if (dvp->v_flag & V_XATTRDIR) { 6601 kmem_free(nm, buflen); 6602 *attrset = 0; 6603 return (NFS4ERR_INVAL); 6604 } 6605 6606 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6607 cva.va_type = VREG; 6608 /* 6609 * Ensure no time overflows. Assumes underlying 6610 * filesystem supports at least 32 bits. 6611 * Truncate nsec to usec resolution to allow valid 6612 * compares even if the underlying filesystem truncates. 6613 */ 6614 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6615 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6616 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6617 cva.va_mode = (mode_t)0; 6618 vap = &cva; 6619 6620 /* 6621 * For EXCL create, attrset is set to the server attr 6622 * used to cache the client's verifier. 6623 */ 6624 *attrset = FATTR4_TIME_MODIFY_MASK; 6625 break; 6626 } 6627 6628 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6629 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6630 MAXPATHLEN + 1); 6631 6632 if (name == NULL) { 6633 kmem_free(nm, buflen); 6634 return (NFS4ERR_SERVERFAULT); 6635 } 6636 6637 status = create_vnode(dvp, name, vap, args->mode, mtime, 6638 cs->cr, &vp, &created); 6639 if (nm != name) 6640 kmem_free(name, MAXPATHLEN + 1); 6641 kmem_free(nm, buflen); 6642 6643 if (status != NFS4_OK) { 6644 if (ntov_table_init) 6645 nfs4_ntov_table_free(&ntov, &sarg); 6646 *attrset = 0; 6647 return (status); 6648 } 6649 6650 trunc = (setsize && !created); 6651 6652 if (args->mode != EXCLUSIVE4) { 6653 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6654 6655 /* 6656 * True verification that object was created with correct 6657 * attrs is impossible. The attrs could have been changed 6658 * immediately after object creation. If attributes did 6659 * not verify, the only recourse for the server is to 6660 * destroy the object. Maybe if some attrs (like gid) 6661 * are set incorrectly, the object should be destroyed; 6662 * however, seems bad as a default policy. Do we really 6663 * want to destroy an object over one of the times not 6664 * verifying correctly? For these reasons, the server 6665 * currently sets bits in attrset for createattrs 6666 * that were set; however, no verification is done. 6667 * 6668 * vmask_to_nmask accounts for vattr bits set on create 6669 * [do_rfs4_set_attrs() only sets resp bits for 6670 * non-vattr/vfs bits.] 6671 * Mask off any bits we set by default so as not to return 6672 * more attrset bits than were requested in createattrs 6673 */ 6674 if (created) { 6675 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6676 *attrset &= createmask; 6677 } else { 6678 /* 6679 * We did not create the vnode (we tried but it 6680 * already existed). In this case, the only createattr 6681 * that the spec allows the server to set is size, 6682 * and even then, it can only be set if it is 0. 6683 */ 6684 *attrset = 0; 6685 if (trunc) 6686 *attrset = FATTR4_SIZE_MASK; 6687 } 6688 } 6689 if (ntov_table_init) 6690 nfs4_ntov_table_free(&ntov, &sarg); 6691 6692 /* 6693 * Get the initial "after" sequence number, if it fails, 6694 * set to zero, time to before. 6695 */ 6696 iva.va_mask = AT_CTIME|AT_SEQ; 6697 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6698 iva.va_seq = 0; 6699 iva.va_ctime = bva.va_ctime; 6700 } 6701 6702 /* 6703 * create_vnode attempts to create the file exclusive, 6704 * if it already exists the VOP_CREATE will fail and 6705 * may not increase va_seq. It is atomic if 6706 * we haven't changed the directory, but if it has changed 6707 * we don't know what changed it. 6708 */ 6709 if (!created) { 6710 if (bva.va_seq && iva.va_seq && 6711 bva.va_seq == iva.va_seq) 6712 cinfo->atomic = TRUE; 6713 else 6714 cinfo->atomic = FALSE; 6715 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6716 } else { 6717 /* 6718 * The entry was created, we need to sync the 6719 * directory metadata. 6720 */ 6721 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6722 6723 /* 6724 * Get "after" change value, if it fails, simply return the 6725 * before value. 6726 */ 6727 ava.va_mask = AT_CTIME|AT_SEQ; 6728 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6729 ava.va_ctime = bva.va_ctime; 6730 ava.va_seq = 0; 6731 } 6732 6733 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6734 6735 /* 6736 * The cinfo->atomic = TRUE only if we have 6737 * non-zero va_seq's, and it has incremented by exactly one 6738 * during the create_vnode and it didn't 6739 * change during the VOP_FSYNC. 6740 */ 6741 if (bva.va_seq && iva.va_seq && ava.va_seq && 6742 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6743 cinfo->atomic = TRUE; 6744 else 6745 cinfo->atomic = FALSE; 6746 } 6747 6748 /* Check for mandatory locking and that the size gets set. */ 6749 cva.va_mask = AT_MODE; 6750 if (setsize) 6751 cva.va_mask |= AT_SIZE; 6752 6753 /* Assume the worst */ 6754 cs->mandlock = TRUE; 6755 6756 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6757 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6758 6759 /* 6760 * Truncate the file if necessary; this would be 6761 * the case for create over an existing file. 6762 */ 6763 6764 if (trunc) { 6765 int in_crit = 0; 6766 rfs4_file_t *fp; 6767 bool_t create = FALSE; 6768 6769 /* 6770 * We are writing over an existing file. 6771 * Check to see if we need to recall a delegation. 6772 */ 6773 rfs4_hold_deleg_policy(); 6774 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6775 if (rfs4_check_delegated_byfp(FWRITE, fp, 6776 (reqsize == 0), FALSE, FALSE, &clientid)) { 6777 rfs4_file_rele(fp); 6778 rfs4_rele_deleg_policy(); 6779 VN_RELE(vp); 6780 *attrset = 0; 6781 return (NFS4ERR_DELAY); 6782 } 6783 rfs4_file_rele(fp); 6784 } 6785 rfs4_rele_deleg_policy(); 6786 6787 if (nbl_need_check(vp)) { 6788 in_crit = 1; 6789 6790 ASSERT(reqsize == 0); 6791 6792 nbl_start_crit(vp, RW_READER); 6793 if (nbl_conflict(vp, NBL_WRITE, 0, 6794 cva.va_size, 0, NULL)) { 6795 in_crit = 0; 6796 nbl_end_crit(vp); 6797 VN_RELE(vp); 6798 *attrset = 0; 6799 return (NFS4ERR_ACCESS); 6800 } 6801 } 6802 ct.cc_sysid = 0; 6803 ct.cc_pid = 0; 6804 ct.cc_caller_id = nfs4_srv_caller_id; 6805 ct.cc_flags = CC_DONTBLOCK; 6806 6807 cva.va_mask = AT_SIZE; 6808 cva.va_size = reqsize; 6809 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6810 if (in_crit) 6811 nbl_end_crit(vp); 6812 } 6813 } 6814 6815 error = makefh4(&cs->fh, vp, cs->exi); 6816 6817 /* 6818 * Force modified data and metadata out to stable storage. 6819 */ 6820 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6821 6822 if (error) { 6823 VN_RELE(vp); 6824 *attrset = 0; 6825 return (puterrno4(error)); 6826 } 6827 6828 /* if parent dir is attrdir, set namedattr fh flag */ 6829 if (dvp->v_flag & V_XATTRDIR) 6830 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6831 6832 if (cs->vp) 6833 VN_RELE(cs->vp); 6834 6835 cs->vp = vp; 6836 6837 /* 6838 * if we did not create the file, we will need to check 6839 * the access bits on the file 6840 */ 6841 6842 if (!created) { 6843 if (setsize) 6844 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6845 status = check_open_access(args->share_access, cs, req); 6846 if (status != NFS4_OK) 6847 *attrset = 0; 6848 } 6849 return (status); 6850 } 6851 6852 /*ARGSUSED*/ 6853 static void 6854 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6855 rfs4_openowner_t *oo, delegreq_t deleg, 6856 uint32_t access, uint32_t deny, 6857 OPEN4res *resp, int deleg_cur) 6858 { 6859 /* XXX Currently not using req */ 6860 rfs4_state_t *sp; 6861 rfs4_file_t *fp; 6862 bool_t screate = TRUE; 6863 bool_t fcreate = TRUE; 6864 uint32_t open_a, share_a; 6865 uint32_t open_d, share_d; 6866 rfs4_deleg_state_t *dsp; 6867 sysid_t sysid; 6868 nfsstat4 status; 6869 caller_context_t ct; 6870 int fflags = 0; 6871 int recall = 0; 6872 int err; 6873 int first_open; 6874 6875 /* get the file struct and hold a lock on it during initial open */ 6876 fp = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6877 if (fp == NULL) { 6878 resp->status = NFS4ERR_RESOURCE; 6879 DTRACE_PROBE1(nfss__e__do__open1, nfsstat4, resp->status); 6880 return; 6881 } 6882 6883 sp = rfs4_findstate_by_owner_file(oo, fp, &screate); 6884 if (sp == NULL) { 6885 resp->status = NFS4ERR_RESOURCE; 6886 DTRACE_PROBE1(nfss__e__do__open2, nfsstat4, resp->status); 6887 /* No need to keep any reference */ 6888 rw_exit(&fp->rf_file_rwlock); 6889 rfs4_file_rele(fp); 6890 return; 6891 } 6892 6893 /* try to get the sysid before continuing */ 6894 if ((status = rfs4_client_sysid(oo->ro_client, &sysid)) != NFS4_OK) { 6895 resp->status = status; 6896 rfs4_file_rele(fp); 6897 /* Not a fully formed open; "close" it */ 6898 if (screate == TRUE) 6899 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6900 rfs4_state_rele(sp); 6901 return; 6902 } 6903 6904 /* Calculate the fflags for this OPEN. */ 6905 if (access & OPEN4_SHARE_ACCESS_READ) 6906 fflags |= FREAD; 6907 if (access & OPEN4_SHARE_ACCESS_WRITE) 6908 fflags |= FWRITE; 6909 6910 rfs4_dbe_lock(sp->rs_dbe); 6911 6912 /* 6913 * Calculate the new deny and access mode that this open is adding to 6914 * the file for this open owner; 6915 */ 6916 open_d = (deny & ~sp->rs_open_deny); 6917 open_a = (access & ~sp->rs_open_access); 6918 6919 /* 6920 * Calculate the new share access and share deny modes that this open 6921 * is adding to the file for this open owner; 6922 */ 6923 share_a = (access & ~sp->rs_share_access); 6924 share_d = (deny & ~sp->rs_share_deny); 6925 6926 first_open = (sp->rs_open_access & OPEN4_SHARE_ACCESS_BOTH) == 0; 6927 6928 /* 6929 * Check to see the client has already sent an open for this 6930 * open owner on this file with the same share/deny modes. 6931 * If so, we don't need to check for a conflict and we don't 6932 * need to add another shrlock. If not, then we need to 6933 * check for conflicts in deny and access before checking for 6934 * conflicts in delegation. We don't want to recall a 6935 * delegation based on an open that will eventually fail based 6936 * on shares modes. 6937 */ 6938 6939 if (share_a || share_d) { 6940 if ((err = rfs4_share(sp, access, deny)) != 0) { 6941 rfs4_dbe_unlock(sp->rs_dbe); 6942 resp->status = err; 6943 6944 rfs4_file_rele(fp); 6945 /* Not a fully formed open; "close" it */ 6946 if (screate == TRUE) 6947 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6948 rfs4_state_rele(sp); 6949 return; 6950 } 6951 } 6952 6953 rfs4_dbe_lock(fp->rf_dbe); 6954 6955 /* 6956 * Check to see if this file is delegated and if so, if a 6957 * recall needs to be done. 6958 */ 6959 if (rfs4_check_recall(sp, access)) { 6960 rfs4_dbe_unlock(fp->rf_dbe); 6961 rfs4_dbe_unlock(sp->rs_dbe); 6962 rfs4_recall_deleg(fp, FALSE, sp->rs_owner->ro_client); 6963 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6964 rfs4_dbe_lock(sp->rs_dbe); 6965 6966 /* if state closed while lock was dropped */ 6967 if (sp->rs_closed) { 6968 if (share_a || share_d) 6969 (void) rfs4_unshare(sp); 6970 rfs4_dbe_unlock(sp->rs_dbe); 6971 rfs4_file_rele(fp); 6972 /* Not a fully formed open; "close" it */ 6973 if (screate == TRUE) 6974 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6975 rfs4_state_rele(sp); 6976 resp->status = NFS4ERR_OLD_STATEID; 6977 return; 6978 } 6979 6980 rfs4_dbe_lock(fp->rf_dbe); 6981 /* Let's see if the delegation was returned */ 6982 if (rfs4_check_recall(sp, access)) { 6983 rfs4_dbe_unlock(fp->rf_dbe); 6984 if (share_a || share_d) 6985 (void) rfs4_unshare(sp); 6986 rfs4_dbe_unlock(sp->rs_dbe); 6987 rfs4_file_rele(fp); 6988 rfs4_update_lease(sp->rs_owner->ro_client); 6989 6990 /* Not a fully formed open; "close" it */ 6991 if (screate == TRUE) 6992 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6993 rfs4_state_rele(sp); 6994 resp->status = NFS4ERR_DELAY; 6995 return; 6996 } 6997 } 6998 /* 6999 * the share check passed and any delegation conflict has been 7000 * taken care of, now call vop_open. 7001 * if this is the first open then call vop_open with fflags. 7002 * if not, call vn_open_upgrade with just the upgrade flags. 7003 * 7004 * if the file has been opened already, it will have the current 7005 * access mode in the state struct. if it has no share access, then 7006 * this is a new open. 7007 * 7008 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 7009 * call VOP_OPEN(), just do the open upgrade. 7010 */ 7011 if (first_open && !deleg_cur) { 7012 ct.cc_sysid = sysid; 7013 ct.cc_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 7014 ct.cc_caller_id = nfs4_srv_caller_id; 7015 ct.cc_flags = CC_DONTBLOCK; 7016 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 7017 if (err) { 7018 rfs4_dbe_unlock(fp->rf_dbe); 7019 if (share_a || share_d) 7020 (void) rfs4_unshare(sp); 7021 rfs4_dbe_unlock(sp->rs_dbe); 7022 rfs4_file_rele(fp); 7023 7024 /* Not a fully formed open; "close" it */ 7025 if (screate == TRUE) 7026 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 7027 rfs4_state_rele(sp); 7028 /* check if a monitor detected a delegation conflict */ 7029 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 7030 resp->status = NFS4ERR_DELAY; 7031 else 7032 resp->status = NFS4ERR_SERVERFAULT; 7033 return; 7034 } 7035 } else { /* open upgrade */ 7036 /* 7037 * calculate the fflags for the new mode that is being added 7038 * by this upgrade. 7039 */ 7040 fflags = 0; 7041 if (open_a & OPEN4_SHARE_ACCESS_READ) 7042 fflags |= FREAD; 7043 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 7044 fflags |= FWRITE; 7045 vn_open_upgrade(cs->vp, fflags); 7046 } 7047 sp->rs_open_access |= access; 7048 sp->rs_open_deny |= deny; 7049 7050 if (open_d & OPEN4_SHARE_DENY_READ) 7051 fp->rf_deny_read++; 7052 if (open_d & OPEN4_SHARE_DENY_WRITE) 7053 fp->rf_deny_write++; 7054 fp->rf_share_deny |= deny; 7055 7056 if (open_a & OPEN4_SHARE_ACCESS_READ) 7057 fp->rf_access_read++; 7058 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 7059 fp->rf_access_write++; 7060 fp->rf_share_access |= access; 7061 7062 /* 7063 * Check for delegation here. if the deleg argument is not 7064 * DELEG_ANY, then this is a reclaim from a client and 7065 * we must honor the delegation requested. If necessary we can 7066 * set the recall flag. 7067 */ 7068 7069 dsp = rfs4_grant_delegation(deleg, sp, &recall); 7070 7071 cs->deleg = (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE); 7072 7073 next_stateid(&sp->rs_stateid); 7074 7075 resp->stateid = sp->rs_stateid.stateid; 7076 7077 rfs4_dbe_unlock(fp->rf_dbe); 7078 rfs4_dbe_unlock(sp->rs_dbe); 7079 7080 if (dsp) { 7081 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 7082 rfs4_deleg_state_rele(dsp); 7083 } 7084 7085 rfs4_file_rele(fp); 7086 rfs4_state_rele(sp); 7087 7088 resp->status = NFS4_OK; 7089 } 7090 7091 /*ARGSUSED*/ 7092 static void 7093 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 7094 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7095 { 7096 change_info4 *cinfo = &resp->cinfo; 7097 bitmap4 *attrset = &resp->attrset; 7098 7099 if (args->opentype == OPEN4_NOCREATE) 7100 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 7101 req, cs, args->share_access, cinfo); 7102 else { 7103 /* inhibit delegation grants during exclusive create */ 7104 7105 if (args->mode == EXCLUSIVE4) 7106 rfs4_disable_delegation(); 7107 7108 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 7109 oo->ro_client->rc_clientid); 7110 } 7111 7112 if (resp->status == NFS4_OK) { 7113 7114 /* cs->vp cs->fh now reference the desired file */ 7115 7116 rfs4_do_open(cs, req, oo, 7117 oo->ro_need_confirm ? DELEG_NONE : DELEG_ANY, 7118 args->share_access, args->share_deny, resp, 0); 7119 7120 /* 7121 * If rfs4_createfile set attrset, we must 7122 * clear this attrset before the response is copied. 7123 */ 7124 if (resp->status != NFS4_OK && resp->attrset) { 7125 resp->attrset = 0; 7126 } 7127 } 7128 else 7129 *cs->statusp = resp->status; 7130 7131 if (args->mode == EXCLUSIVE4) 7132 rfs4_enable_delegation(); 7133 } 7134 7135 /*ARGSUSED*/ 7136 static void 7137 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 7138 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7139 { 7140 change_info4 *cinfo = &resp->cinfo; 7141 vattr_t va; 7142 vtype_t v_type = cs->vp->v_type; 7143 int error = 0; 7144 7145 /* Verify that we have a regular file */ 7146 if (v_type != VREG) { 7147 if (v_type == VDIR) 7148 resp->status = NFS4ERR_ISDIR; 7149 else if (v_type == VLNK) 7150 resp->status = NFS4ERR_SYMLINK; 7151 else 7152 resp->status = NFS4ERR_INVAL; 7153 return; 7154 } 7155 7156 va.va_mask = AT_MODE|AT_UID; 7157 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 7158 if (error) { 7159 resp->status = puterrno4(error); 7160 return; 7161 } 7162 7163 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 7164 7165 /* 7166 * Check if we have access to the file, Note the the file 7167 * could have originally been open UNCHECKED or GUARDED 7168 * with mode bits that will now fail, but there is nothing 7169 * we can really do about that except in the case that the 7170 * owner of the file is the one requesting the open. 7171 */ 7172 if (crgetuid(cs->cr) != va.va_uid) { 7173 resp->status = check_open_access(args->share_access, cs, req); 7174 if (resp->status != NFS4_OK) { 7175 return; 7176 } 7177 } 7178 7179 /* 7180 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 7181 */ 7182 cinfo->before = 0; 7183 cinfo->after = 0; 7184 cinfo->atomic = FALSE; 7185 7186 rfs4_do_open(cs, req, oo, 7187 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 7188 args->share_access, args->share_deny, resp, 0); 7189 } 7190 7191 static void 7192 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 7193 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7194 { 7195 int error; 7196 nfsstat4 status; 7197 stateid4 stateid = 7198 args->open_claim4_u.delegate_cur_info.delegate_stateid; 7199 rfs4_deleg_state_t *dsp; 7200 7201 /* 7202 * Find the state info from the stateid and confirm that the 7203 * file is delegated. If the state openowner is the same as 7204 * the supplied openowner we're done. If not, get the file 7205 * info from the found state info. Use that file info to 7206 * create the state for this lock owner. Note solaris doen't 7207 * really need the pathname to find the file. We may want to 7208 * lookup the pathname and make sure that the vp exist and 7209 * matches the vp in the file structure. However it is 7210 * possible that the pathname nolonger exists (local process 7211 * unlinks the file), so this may not be that useful. 7212 */ 7213 7214 status = rfs4_get_deleg_state(&stateid, &dsp); 7215 if (status != NFS4_OK) { 7216 resp->status = status; 7217 return; 7218 } 7219 7220 ASSERT(dsp->rds_finfo->rf_dinfo.rd_dtype != OPEN_DELEGATE_NONE); 7221 7222 /* 7223 * New lock owner, create state. Since this was probably called 7224 * in response to a CB_RECALL we set deleg to DELEG_NONE 7225 */ 7226 7227 ASSERT(cs->vp != NULL); 7228 VN_RELE(cs->vp); 7229 VN_HOLD(dsp->rds_finfo->rf_vp); 7230 cs->vp = dsp->rds_finfo->rf_vp; 7231 7232 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 7233 rfs4_deleg_state_rele(dsp); 7234 *cs->statusp = resp->status = puterrno4(error); 7235 return; 7236 } 7237 7238 /* Mark progress for delegation returns */ 7239 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = gethrestime_sec(); 7240 rfs4_deleg_state_rele(dsp); 7241 rfs4_do_open(cs, req, oo, DELEG_NONE, 7242 args->share_access, args->share_deny, resp, 1); 7243 } 7244 7245 /*ARGSUSED*/ 7246 static void 7247 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 7248 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7249 { 7250 /* 7251 * Lookup the pathname, it must already exist since this file 7252 * was delegated. 7253 * 7254 * Find the file and state info for this vp and open owner pair. 7255 * check that they are in fact delegated. 7256 * check that the state access and deny modes are the same. 7257 * 7258 * Return the delgation possibly seting the recall flag. 7259 */ 7260 rfs4_file_t *fp; 7261 rfs4_state_t *sp; 7262 bool_t create = FALSE; 7263 bool_t dcreate = FALSE; 7264 rfs4_deleg_state_t *dsp; 7265 nfsace4 *ace; 7266 7267 /* Note we ignore oflags */ 7268 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 7269 req, cs, args->share_access, &resp->cinfo); 7270 7271 if (resp->status != NFS4_OK) { 7272 return; 7273 } 7274 7275 /* get the file struct and hold a lock on it during initial open */ 7276 fp = rfs4_findfile_withlock(cs->vp, NULL, &create); 7277 if (fp == NULL) { 7278 resp->status = NFS4ERR_RESOURCE; 7279 DTRACE_PROBE1(nfss__e__do_opendelprev1, nfsstat4, resp->status); 7280 return; 7281 } 7282 7283 sp = rfs4_findstate_by_owner_file(oo, fp, &create); 7284 if (sp == NULL) { 7285 resp->status = NFS4ERR_SERVERFAULT; 7286 DTRACE_PROBE1(nfss__e__do_opendelprev2, nfsstat4, resp->status); 7287 rw_exit(&fp->rf_file_rwlock); 7288 rfs4_file_rele(fp); 7289 return; 7290 } 7291 7292 rfs4_dbe_lock(sp->rs_dbe); 7293 rfs4_dbe_lock(fp->rf_dbe); 7294 if (args->share_access != sp->rs_share_access || 7295 args->share_deny != sp->rs_share_deny || 7296 sp->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) { 7297 NFS4_DEBUG(rfs4_debug, 7298 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 7299 rfs4_dbe_unlock(fp->rf_dbe); 7300 rfs4_dbe_unlock(sp->rs_dbe); 7301 rfs4_file_rele(fp); 7302 rfs4_state_rele(sp); 7303 resp->status = NFS4ERR_SERVERFAULT; 7304 return; 7305 } 7306 rfs4_dbe_unlock(fp->rf_dbe); 7307 rfs4_dbe_unlock(sp->rs_dbe); 7308 7309 dsp = rfs4_finddeleg(sp, &dcreate); 7310 if (dsp == NULL) { 7311 rfs4_state_rele(sp); 7312 rfs4_file_rele(fp); 7313 resp->status = NFS4ERR_SERVERFAULT; 7314 return; 7315 } 7316 7317 next_stateid(&sp->rs_stateid); 7318 7319 resp->stateid = sp->rs_stateid.stateid; 7320 7321 resp->delegation.delegation_type = dsp->rds_dtype; 7322 7323 if (dsp->rds_dtype == OPEN_DELEGATE_READ) { 7324 open_read_delegation4 *rv = 7325 &resp->delegation.open_delegation4_u.read; 7326 7327 rv->stateid = dsp->rds_delegid.stateid; 7328 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7329 ace = &rv->permissions; 7330 } else { 7331 open_write_delegation4 *rv = 7332 &resp->delegation.open_delegation4_u.write; 7333 7334 rv->stateid = dsp->rds_delegid.stateid; 7335 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7336 ace = &rv->permissions; 7337 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7338 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7339 } 7340 7341 /* XXX For now */ 7342 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7343 ace->flag = 0; 7344 ace->access_mask = 0; 7345 ace->who.utf8string_len = 0; 7346 ace->who.utf8string_val = 0; 7347 7348 rfs4_deleg_state_rele(dsp); 7349 rfs4_state_rele(sp); 7350 rfs4_file_rele(fp); 7351 } 7352 7353 typedef enum { 7354 NFS4_CHKSEQ_OKAY = 0, 7355 NFS4_CHKSEQ_REPLAY = 1, 7356 NFS4_CHKSEQ_BAD = 2 7357 } rfs4_chkseq_t; 7358 7359 /* 7360 * Generic function for sequence number checks. 7361 */ 7362 static rfs4_chkseq_t 7363 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7364 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7365 { 7366 /* Same sequence ids and matching operations? */ 7367 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7368 if (copyres == TRUE) { 7369 rfs4_free_reply(resop); 7370 rfs4_copy_reply(resop, lastop); 7371 } 7372 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7373 "Replayed SEQID %d\n", seqid)); 7374 return (NFS4_CHKSEQ_REPLAY); 7375 } 7376 7377 /* If the incoming sequence is not the next expected then it is bad */ 7378 if (rqst_seq != seqid + 1) { 7379 if (rqst_seq == seqid) { 7380 NFS4_DEBUG(rfs4_debug, 7381 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7382 "but last op was %d current op is %d\n", 7383 lastop->resop, resop->resop)); 7384 return (NFS4_CHKSEQ_BAD); 7385 } 7386 NFS4_DEBUG(rfs4_debug, 7387 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7388 rqst_seq, seqid)); 7389 return (NFS4_CHKSEQ_BAD); 7390 } 7391 7392 /* Everything okay -- next expected */ 7393 return (NFS4_CHKSEQ_OKAY); 7394 } 7395 7396 7397 static rfs4_chkseq_t 7398 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7399 { 7400 rfs4_chkseq_t rc; 7401 7402 rfs4_dbe_lock(op->ro_dbe); 7403 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, seqid, resop, 7404 TRUE); 7405 rfs4_dbe_unlock(op->ro_dbe); 7406 7407 if (rc == NFS4_CHKSEQ_OKAY) 7408 rfs4_update_lease(op->ro_client); 7409 7410 return (rc); 7411 } 7412 7413 static rfs4_chkseq_t 7414 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7415 { 7416 rfs4_chkseq_t rc; 7417 7418 rfs4_dbe_lock(op->ro_dbe); 7419 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, 7420 olo_seqid, resop, FALSE); 7421 rfs4_dbe_unlock(op->ro_dbe); 7422 7423 return (rc); 7424 } 7425 7426 static rfs4_chkseq_t 7427 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lsp, nfs_resop4 *resop) 7428 { 7429 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7430 7431 rfs4_dbe_lock(lsp->rls_dbe); 7432 if (!lsp->rls_skip_seqid_check) 7433 rc = rfs4_check_seqid(lsp->rls_seqid, &lsp->rls_reply, seqid, 7434 resop, TRUE); 7435 rfs4_dbe_unlock(lsp->rls_dbe); 7436 7437 return (rc); 7438 } 7439 7440 static void 7441 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7442 struct svc_req *req, struct compound_state *cs) 7443 { 7444 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7445 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7446 open_owner4 *owner = &args->owner; 7447 open_claim_type4 claim = args->claim; 7448 rfs4_client_t *cp; 7449 rfs4_openowner_t *oo; 7450 bool_t create; 7451 bool_t replay = FALSE; 7452 int can_reclaim; 7453 7454 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7455 OPEN4args *, args); 7456 7457 if (cs->vp == NULL) { 7458 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7459 goto end; 7460 } 7461 7462 /* 7463 * Need to check clientid and lease expiration first based on 7464 * error ordering and incrementing sequence id. 7465 */ 7466 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7467 if (cp == NULL) { 7468 *cs->statusp = resp->status = 7469 rfs4_check_clientid(&owner->clientid, 0); 7470 goto end; 7471 } 7472 7473 if (rfs4_lease_expired(cp)) { 7474 rfs4_client_close(cp); 7475 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7476 goto end; 7477 } 7478 can_reclaim = cp->rc_can_reclaim; 7479 7480 /* 7481 * Find the open_owner for use from this point forward. Take 7482 * care in updating the sequence id based on the type of error 7483 * being returned. 7484 */ 7485 retry: 7486 create = TRUE; 7487 oo = rfs4_findopenowner(owner, &create, args->seqid); 7488 if (oo == NULL) { 7489 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 7490 rfs4_client_rele(cp); 7491 goto end; 7492 } 7493 7494 /* Hold off access to the sequence space while the open is done */ 7495 rfs4_sw_enter(&oo->ro_sw); 7496 7497 /* 7498 * If the open_owner existed before at the server, then check 7499 * the sequence id. 7500 */ 7501 if (!create && !oo->ro_postpone_confirm) { 7502 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 7503 case NFS4_CHKSEQ_BAD: 7504 if ((args->seqid > oo->ro_open_seqid) && 7505 oo->ro_need_confirm) { 7506 rfs4_free_opens(oo, TRUE, FALSE); 7507 rfs4_sw_exit(&oo->ro_sw); 7508 rfs4_openowner_rele(oo); 7509 goto retry; 7510 } 7511 resp->status = NFS4ERR_BAD_SEQID; 7512 goto out; 7513 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7514 replay = TRUE; 7515 goto out; 7516 default: 7517 break; 7518 } 7519 7520 /* 7521 * Sequence was ok and open owner exists 7522 * check to see if we have yet to see an 7523 * open_confirm. 7524 */ 7525 if (oo->ro_need_confirm) { 7526 rfs4_free_opens(oo, TRUE, FALSE); 7527 rfs4_sw_exit(&oo->ro_sw); 7528 rfs4_openowner_rele(oo); 7529 goto retry; 7530 } 7531 } 7532 /* Grace only applies to regular-type OPENs */ 7533 if (rfs4_clnt_in_grace(cp) && 7534 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7535 *cs->statusp = resp->status = NFS4ERR_GRACE; 7536 goto out; 7537 } 7538 7539 /* 7540 * If previous state at the server existed then can_reclaim 7541 * will be set. If not reply NFS4ERR_NO_GRACE to the 7542 * client. 7543 */ 7544 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7545 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7546 goto out; 7547 } 7548 7549 7550 /* 7551 * Reject the open if the client has missed the grace period 7552 */ 7553 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7554 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7555 goto out; 7556 } 7557 7558 /* Couple of up-front bookkeeping items */ 7559 if (oo->ro_need_confirm) { 7560 /* 7561 * If this is a reclaim OPEN then we should not ask 7562 * for a confirmation of the open_owner per the 7563 * protocol specification. 7564 */ 7565 if (claim == CLAIM_PREVIOUS) 7566 oo->ro_need_confirm = FALSE; 7567 else 7568 resp->rflags |= OPEN4_RESULT_CONFIRM; 7569 } 7570 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7571 7572 /* 7573 * If there is an unshared filesystem mounted on this vnode, 7574 * do not allow to open/create in this directory. 7575 */ 7576 if (vn_ismntpt(cs->vp)) { 7577 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7578 goto out; 7579 } 7580 7581 /* 7582 * access must READ, WRITE, or BOTH. No access is invalid. 7583 * deny can be READ, WRITE, BOTH, or NONE. 7584 * bits not defined for access/deny are invalid. 7585 */ 7586 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7587 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7588 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7589 *cs->statusp = resp->status = NFS4ERR_INVAL; 7590 goto out; 7591 } 7592 7593 7594 /* 7595 * make sure attrset is zero before response is built. 7596 */ 7597 resp->attrset = 0; 7598 7599 switch (claim) { 7600 case CLAIM_NULL: 7601 rfs4_do_opennull(cs, req, args, oo, resp); 7602 break; 7603 case CLAIM_PREVIOUS: 7604 rfs4_do_openprev(cs, req, args, oo, resp); 7605 break; 7606 case CLAIM_DELEGATE_CUR: 7607 rfs4_do_opendelcur(cs, req, args, oo, resp); 7608 break; 7609 case CLAIM_DELEGATE_PREV: 7610 rfs4_do_opendelprev(cs, req, args, oo, resp); 7611 break; 7612 default: 7613 resp->status = NFS4ERR_INVAL; 7614 break; 7615 } 7616 7617 out: 7618 rfs4_client_rele(cp); 7619 7620 /* Catch sequence id handling here to make it a little easier */ 7621 switch (resp->status) { 7622 case NFS4ERR_BADXDR: 7623 case NFS4ERR_BAD_SEQID: 7624 case NFS4ERR_BAD_STATEID: 7625 case NFS4ERR_NOFILEHANDLE: 7626 case NFS4ERR_RESOURCE: 7627 case NFS4ERR_STALE_CLIENTID: 7628 case NFS4ERR_STALE_STATEID: 7629 /* 7630 * The protocol states that if any of these errors are 7631 * being returned, the sequence id should not be 7632 * incremented. Any other return requires an 7633 * increment. 7634 */ 7635 break; 7636 default: 7637 /* Always update the lease in this case */ 7638 rfs4_update_lease(oo->ro_client); 7639 7640 /* Regular response - copy the result */ 7641 if (!replay) 7642 rfs4_update_open_resp(oo, resop, &cs->fh); 7643 7644 /* 7645 * REPLAY case: Only if the previous response was OK 7646 * do we copy the filehandle. If not OK, no 7647 * filehandle to copy. 7648 */ 7649 if (replay == TRUE && 7650 resp->status == NFS4_OK && 7651 oo->ro_reply_fh.nfs_fh4_val) { 7652 /* 7653 * If this is a replay, we must restore the 7654 * current filehandle/vp to that of what was 7655 * returned originally. Try our best to do 7656 * it. 7657 */ 7658 nfs_fh4_fmt_t *fh_fmtp = 7659 (nfs_fh4_fmt_t *)oo->ro_reply_fh.nfs_fh4_val; 7660 7661 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7662 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7663 7664 if (cs->exi == NULL) { 7665 resp->status = NFS4ERR_STALE; 7666 goto finish; 7667 } 7668 7669 VN_RELE(cs->vp); 7670 7671 cs->vp = nfs4_fhtovp(&oo->ro_reply_fh, cs->exi, 7672 &resp->status); 7673 7674 if (cs->vp == NULL) 7675 goto finish; 7676 7677 nfs_fh4_copy(&oo->ro_reply_fh, &cs->fh); 7678 } 7679 7680 /* 7681 * If this was a replay, no need to update the 7682 * sequence id. If the open_owner was not created on 7683 * this pass, then update. The first use of an 7684 * open_owner will not bump the sequence id. 7685 */ 7686 if (replay == FALSE && !create) 7687 rfs4_update_open_sequence(oo); 7688 /* 7689 * If the client is receiving an error and the 7690 * open_owner needs to be confirmed, there is no way 7691 * to notify the client of this fact ignoring the fact 7692 * that the server has no method of returning a 7693 * stateid to confirm. Therefore, the server needs to 7694 * mark this open_owner in a way as to avoid the 7695 * sequence id checking the next time the client uses 7696 * this open_owner. 7697 */ 7698 if (resp->status != NFS4_OK && oo->ro_need_confirm) 7699 oo->ro_postpone_confirm = TRUE; 7700 /* 7701 * If OK response then clear the postpone flag and 7702 * reset the sequence id to keep in sync with the 7703 * client. 7704 */ 7705 if (resp->status == NFS4_OK && oo->ro_postpone_confirm) { 7706 oo->ro_postpone_confirm = FALSE; 7707 oo->ro_open_seqid = args->seqid; 7708 } 7709 break; 7710 } 7711 7712 finish: 7713 *cs->statusp = resp->status; 7714 7715 rfs4_sw_exit(&oo->ro_sw); 7716 rfs4_openowner_rele(oo); 7717 7718 end: 7719 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7720 OPEN4res *, resp); 7721 } 7722 7723 /*ARGSUSED*/ 7724 void 7725 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7726 struct svc_req *req, struct compound_state *cs) 7727 { 7728 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7729 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7730 rfs4_state_t *sp; 7731 nfsstat4 status; 7732 7733 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7734 OPEN_CONFIRM4args *, args); 7735 7736 if (cs->vp == NULL) { 7737 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7738 goto out; 7739 } 7740 7741 if (cs->vp->v_type != VREG) { 7742 *cs->statusp = resp->status = 7743 cs->vp->v_type == VDIR ? NFS4ERR_ISDIR : NFS4ERR_INVAL; 7744 return; 7745 } 7746 7747 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7748 if (status != NFS4_OK) { 7749 *cs->statusp = resp->status = status; 7750 goto out; 7751 } 7752 7753 /* Ensure specified filehandle matches */ 7754 if (cs->vp != sp->rs_finfo->rf_vp) { 7755 rfs4_state_rele(sp); 7756 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7757 goto out; 7758 } 7759 7760 /* hold off other access to open_owner while we tinker */ 7761 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7762 7763 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7764 case NFS4_CHECK_STATEID_OKAY: 7765 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7766 resop) != 0) { 7767 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7768 break; 7769 } 7770 /* 7771 * If it is the appropriate stateid and determined to 7772 * be "OKAY" then this means that the stateid does not 7773 * need to be confirmed and the client is in error for 7774 * sending an OPEN_CONFIRM. 7775 */ 7776 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7777 break; 7778 case NFS4_CHECK_STATEID_OLD: 7779 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7780 break; 7781 case NFS4_CHECK_STATEID_BAD: 7782 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7783 break; 7784 case NFS4_CHECK_STATEID_EXPIRED: 7785 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7786 break; 7787 case NFS4_CHECK_STATEID_CLOSED: 7788 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7789 break; 7790 case NFS4_CHECK_STATEID_REPLAY: 7791 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7792 resop)) { 7793 case NFS4_CHKSEQ_OKAY: 7794 /* 7795 * This is replayed stateid; if seqid matches 7796 * next expected, then client is using wrong seqid. 7797 */ 7798 /* fall through */ 7799 case NFS4_CHKSEQ_BAD: 7800 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7801 break; 7802 case NFS4_CHKSEQ_REPLAY: 7803 /* 7804 * Note this case is the duplicate case so 7805 * resp->status is already set. 7806 */ 7807 *cs->statusp = resp->status; 7808 rfs4_update_lease(sp->rs_owner->ro_client); 7809 break; 7810 } 7811 break; 7812 case NFS4_CHECK_STATEID_UNCONFIRMED: 7813 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7814 resop) != NFS4_CHKSEQ_OKAY) { 7815 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7816 break; 7817 } 7818 *cs->statusp = resp->status = NFS4_OK; 7819 7820 next_stateid(&sp->rs_stateid); 7821 resp->open_stateid = sp->rs_stateid.stateid; 7822 sp->rs_owner->ro_need_confirm = FALSE; 7823 rfs4_update_lease(sp->rs_owner->ro_client); 7824 rfs4_update_open_sequence(sp->rs_owner); 7825 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7826 break; 7827 default: 7828 ASSERT(FALSE); 7829 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7830 break; 7831 } 7832 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7833 rfs4_state_rele(sp); 7834 7835 out: 7836 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7837 OPEN_CONFIRM4res *, resp); 7838 } 7839 7840 /*ARGSUSED*/ 7841 void 7842 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7843 struct svc_req *req, struct compound_state *cs) 7844 { 7845 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7846 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7847 uint32_t access = args->share_access; 7848 uint32_t deny = args->share_deny; 7849 nfsstat4 status; 7850 rfs4_state_t *sp; 7851 rfs4_file_t *fp; 7852 int fflags = 0; 7853 7854 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7855 OPEN_DOWNGRADE4args *, args); 7856 7857 if (cs->vp == NULL) { 7858 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7859 goto out; 7860 } 7861 7862 if (cs->vp->v_type != VREG) { 7863 *cs->statusp = resp->status = NFS4ERR_INVAL; 7864 return; 7865 } 7866 7867 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7868 if (status != NFS4_OK) { 7869 *cs->statusp = resp->status = status; 7870 goto out; 7871 } 7872 7873 /* Ensure specified filehandle matches */ 7874 if (cs->vp != sp->rs_finfo->rf_vp) { 7875 rfs4_state_rele(sp); 7876 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7877 goto out; 7878 } 7879 7880 /* hold off other access to open_owner while we tinker */ 7881 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7882 7883 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7884 case NFS4_CHECK_STATEID_OKAY: 7885 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7886 resop) != NFS4_CHKSEQ_OKAY) { 7887 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7888 goto end; 7889 } 7890 break; 7891 case NFS4_CHECK_STATEID_OLD: 7892 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7893 goto end; 7894 case NFS4_CHECK_STATEID_BAD: 7895 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7896 goto end; 7897 case NFS4_CHECK_STATEID_EXPIRED: 7898 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7899 goto end; 7900 case NFS4_CHECK_STATEID_CLOSED: 7901 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7902 goto end; 7903 case NFS4_CHECK_STATEID_UNCONFIRMED: 7904 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7905 goto end; 7906 case NFS4_CHECK_STATEID_REPLAY: 7907 /* Check the sequence id for the open owner */ 7908 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7909 resop)) { 7910 case NFS4_CHKSEQ_OKAY: 7911 /* 7912 * This is replayed stateid; if seqid matches 7913 * next expected, then client is using wrong seqid. 7914 */ 7915 /* fall through */ 7916 case NFS4_CHKSEQ_BAD: 7917 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7918 goto end; 7919 case NFS4_CHKSEQ_REPLAY: 7920 /* 7921 * Note this case is the duplicate case so 7922 * resp->status is already set. 7923 */ 7924 *cs->statusp = resp->status; 7925 rfs4_update_lease(sp->rs_owner->ro_client); 7926 goto end; 7927 } 7928 break; 7929 default: 7930 ASSERT(FALSE); 7931 break; 7932 } 7933 7934 rfs4_dbe_lock(sp->rs_dbe); 7935 /* 7936 * Check that the new access modes and deny modes are valid. 7937 * Check that no invalid bits are set. 7938 */ 7939 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7940 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7941 *cs->statusp = resp->status = NFS4ERR_INVAL; 7942 rfs4_update_open_sequence(sp->rs_owner); 7943 rfs4_dbe_unlock(sp->rs_dbe); 7944 goto end; 7945 } 7946 7947 /* 7948 * The new modes must be a subset of the current modes and 7949 * the access must specify at least one mode. To test that 7950 * the new mode is a subset of the current modes we bitwise 7951 * AND them together and check that the result equals the new 7952 * mode. For example: 7953 * New mode, access == R and current mode, sp->rs_open_access == RW 7954 * access & sp->rs_open_access == R == access, so the new access mode 7955 * is valid. Consider access == RW, sp->rs_open_access = R 7956 * access & sp->rs_open_access == R != access, so the new access mode 7957 * is invalid. 7958 */ 7959 if ((access & sp->rs_open_access) != access || 7960 (deny & sp->rs_open_deny) != deny || 7961 (access & 7962 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7963 *cs->statusp = resp->status = NFS4ERR_INVAL; 7964 rfs4_update_open_sequence(sp->rs_owner); 7965 rfs4_dbe_unlock(sp->rs_dbe); 7966 goto end; 7967 } 7968 7969 /* 7970 * Release any share locks associated with this stateID. 7971 * Strictly speaking, this violates the spec because the 7972 * spec effectively requires that open downgrade be atomic. 7973 * At present, fs_shrlock does not have this capability. 7974 */ 7975 (void) rfs4_unshare(sp); 7976 7977 status = rfs4_share(sp, access, deny); 7978 if (status != NFS4_OK) { 7979 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7980 rfs4_update_open_sequence(sp->rs_owner); 7981 rfs4_dbe_unlock(sp->rs_dbe); 7982 goto end; 7983 } 7984 7985 fp = sp->rs_finfo; 7986 rfs4_dbe_lock(fp->rf_dbe); 7987 7988 /* 7989 * If the current mode has deny read and the new mode 7990 * does not, decrement the number of deny read mode bits 7991 * and if it goes to zero turn off the deny read bit 7992 * on the file. 7993 */ 7994 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_READ) && 7995 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7996 fp->rf_deny_read--; 7997 if (fp->rf_deny_read == 0) 7998 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 7999 } 8000 8001 /* 8002 * If the current mode has deny write and the new mode 8003 * does not, decrement the number of deny write mode bits 8004 * and if it goes to zero turn off the deny write bit 8005 * on the file. 8006 */ 8007 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) && 8008 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 8009 fp->rf_deny_write--; 8010 if (fp->rf_deny_write == 0) 8011 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8012 } 8013 8014 /* 8015 * If the current mode has access read and the new mode 8016 * does not, decrement the number of access read mode bits 8017 * and if it goes to zero turn off the access read bit 8018 * on the file. set fflags to FREAD for the call to 8019 * vn_open_downgrade(). 8020 */ 8021 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) && 8022 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 8023 fp->rf_access_read--; 8024 if (fp->rf_access_read == 0) 8025 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8026 fflags |= FREAD; 8027 } 8028 8029 /* 8030 * If the current mode has access write and the new mode 8031 * does not, decrement the number of access write mode bits 8032 * and if it goes to zero turn off the access write bit 8033 * on the file. set fflags to FWRITE for the call to 8034 * vn_open_downgrade(). 8035 */ 8036 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) && 8037 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8038 fp->rf_access_write--; 8039 if (fp->rf_access_write == 0) 8040 fp->rf_share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 8041 fflags |= FWRITE; 8042 } 8043 8044 /* Check that the file is still accessible */ 8045 ASSERT(fp->rf_share_access); 8046 8047 rfs4_dbe_unlock(fp->rf_dbe); 8048 8049 /* now set the new open access and deny modes */ 8050 sp->rs_open_access = access; 8051 sp->rs_open_deny = deny; 8052 8053 /* 8054 * we successfully downgraded the share lock, now we need to downgrade 8055 * the open. it is possible that the downgrade was only for a deny 8056 * mode and we have nothing else to do. 8057 */ 8058 if ((fflags & (FREAD|FWRITE)) != 0) 8059 vn_open_downgrade(cs->vp, fflags); 8060 8061 /* Update the stateid */ 8062 next_stateid(&sp->rs_stateid); 8063 resp->open_stateid = sp->rs_stateid.stateid; 8064 8065 rfs4_dbe_unlock(sp->rs_dbe); 8066 8067 *cs->statusp = resp->status = NFS4_OK; 8068 /* Update the lease */ 8069 rfs4_update_lease(sp->rs_owner->ro_client); 8070 /* And the sequence */ 8071 rfs4_update_open_sequence(sp->rs_owner); 8072 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8073 8074 end: 8075 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8076 rfs4_state_rele(sp); 8077 out: 8078 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 8079 OPEN_DOWNGRADE4res *, resp); 8080 } 8081 8082 static void * 8083 memstr(const void *s1, const char *s2, size_t n) 8084 { 8085 size_t l = strlen(s2); 8086 char *p = (char *)s1; 8087 8088 while (n >= l) { 8089 if (bcmp(p, s2, l) == 0) 8090 return (p); 8091 p++; 8092 n--; 8093 } 8094 8095 return (NULL); 8096 } 8097 8098 /* 8099 * The logic behind this function is detailed in the NFSv4 RFC in the 8100 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 8101 * that section for explicit guidance to server behavior for 8102 * SETCLIENTID. 8103 */ 8104 void 8105 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 8106 struct svc_req *req, struct compound_state *cs) 8107 { 8108 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 8109 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 8110 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 8111 rfs4_clntip_t *ci; 8112 bool_t create; 8113 char *addr, *netid; 8114 int len; 8115 8116 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 8117 SETCLIENTID4args *, args); 8118 retry: 8119 newcp = cp_confirmed = cp_unconfirmed = NULL; 8120 8121 /* 8122 * Save the caller's IP address 8123 */ 8124 args->client.cl_addr = 8125 (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 8126 8127 /* 8128 * Record if it is a Solaris client that cannot handle referrals. 8129 */ 8130 if (memstr(args->client.id_val, "Solaris", args->client.id_len) && 8131 !memstr(args->client.id_val, "+referrals", args->client.id_len)) { 8132 /* Add a "yes, it's downrev" record */ 8133 create = TRUE; 8134 ci = rfs4_find_clntip(args->client.cl_addr, &create); 8135 ASSERT(ci != NULL); 8136 rfs4_dbe_rele(ci->ri_dbe); 8137 } else { 8138 /* Remove any previous record */ 8139 rfs4_invalidate_clntip(args->client.cl_addr); 8140 } 8141 8142 /* 8143 * In search of an EXISTING client matching the incoming 8144 * request to establish a new client identifier at the server 8145 */ 8146 create = TRUE; 8147 cp = rfs4_findclient(&args->client, &create, NULL); 8148 8149 /* Should never happen */ 8150 ASSERT(cp != NULL); 8151 8152 if (cp == NULL) { 8153 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8154 goto out; 8155 } 8156 8157 /* 8158 * Easiest case. Client identifier is newly created and is 8159 * unconfirmed. Also note that for this case, no other 8160 * entries exist for the client identifier. Nothing else to 8161 * check. Just setup the response and respond. 8162 */ 8163 if (create) { 8164 *cs->statusp = res->status = NFS4_OK; 8165 res->SETCLIENTID4res_u.resok4.clientid = cp->rc_clientid; 8166 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8167 cp->rc_confirm_verf; 8168 /* Setup callback information; CB_NULL confirmation later */ 8169 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 8170 8171 rfs4_client_rele(cp); 8172 goto out; 8173 } 8174 8175 /* 8176 * An existing, confirmed client may exist but it may not have 8177 * been active for at least one lease period. If so, then 8178 * "close" the client and create a new client identifier 8179 */ 8180 if (rfs4_lease_expired(cp)) { 8181 rfs4_client_close(cp); 8182 goto retry; 8183 } 8184 8185 if (cp->rc_need_confirm == TRUE) 8186 cp_unconfirmed = cp; 8187 else 8188 cp_confirmed = cp; 8189 8190 cp = NULL; 8191 8192 /* 8193 * We have a confirmed client, now check for an 8194 * unconfimred entry 8195 */ 8196 if (cp_confirmed) { 8197 /* If creds don't match then client identifier is inuse */ 8198 if (!creds_ok(cp_confirmed->rc_cr_set, req, cs)) { 8199 rfs4_cbinfo_t *cbp; 8200 /* 8201 * Some one else has established this client 8202 * id. Try and say * who they are. We will use 8203 * the call back address supplied by * the 8204 * first client. 8205 */ 8206 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8207 8208 addr = netid = NULL; 8209 8210 cbp = &cp_confirmed->rc_cbinfo; 8211 if (cbp->cb_callback.cb_location.r_addr && 8212 cbp->cb_callback.cb_location.r_netid) { 8213 cb_client4 *cbcp = &cbp->cb_callback; 8214 8215 len = strlen(cbcp->cb_location.r_addr)+1; 8216 addr = kmem_alloc(len, KM_SLEEP); 8217 bcopy(cbcp->cb_location.r_addr, addr, len); 8218 len = strlen(cbcp->cb_location.r_netid)+1; 8219 netid = kmem_alloc(len, KM_SLEEP); 8220 bcopy(cbcp->cb_location.r_netid, netid, len); 8221 } 8222 8223 res->SETCLIENTID4res_u.client_using.r_addr = addr; 8224 res->SETCLIENTID4res_u.client_using.r_netid = netid; 8225 8226 rfs4_client_rele(cp_confirmed); 8227 } 8228 8229 /* 8230 * Confirmed, creds match, and verifier matches; must 8231 * be an update of the callback info 8232 */ 8233 if (cp_confirmed->rc_nfs_client.verifier == 8234 args->client.verifier) { 8235 /* Setup callback information */ 8236 rfs4_client_setcb(cp_confirmed, &args->callback, 8237 args->callback_ident); 8238 8239 /* everything okay -- move ahead */ 8240 *cs->statusp = res->status = NFS4_OK; 8241 res->SETCLIENTID4res_u.resok4.clientid = 8242 cp_confirmed->rc_clientid; 8243 8244 /* update the confirm_verifier and return it */ 8245 rfs4_client_scv_next(cp_confirmed); 8246 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8247 cp_confirmed->rc_confirm_verf; 8248 8249 rfs4_client_rele(cp_confirmed); 8250 goto out; 8251 } 8252 8253 /* 8254 * Creds match but the verifier doesn't. Must search 8255 * for an unconfirmed client that would be replaced by 8256 * this request. 8257 */ 8258 create = FALSE; 8259 cp_unconfirmed = rfs4_findclient(&args->client, &create, 8260 cp_confirmed); 8261 } 8262 8263 /* 8264 * At this point, we have taken care of the brand new client 8265 * struct, INUSE case, update of an existing, and confirmed 8266 * client struct. 8267 */ 8268 8269 /* 8270 * check to see if things have changed while we originally 8271 * picked up the client struct. If they have, then return and 8272 * retry the processing of this SETCLIENTID request. 8273 */ 8274 if (cp_unconfirmed) { 8275 rfs4_dbe_lock(cp_unconfirmed->rc_dbe); 8276 if (!cp_unconfirmed->rc_need_confirm) { 8277 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8278 rfs4_client_rele(cp_unconfirmed); 8279 if (cp_confirmed) 8280 rfs4_client_rele(cp_confirmed); 8281 goto retry; 8282 } 8283 /* do away with the old unconfirmed one */ 8284 rfs4_dbe_invalidate(cp_unconfirmed->rc_dbe); 8285 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8286 rfs4_client_rele(cp_unconfirmed); 8287 cp_unconfirmed = NULL; 8288 } 8289 8290 /* 8291 * This search will temporarily hide the confirmed client 8292 * struct while a new client struct is created as the 8293 * unconfirmed one. 8294 */ 8295 create = TRUE; 8296 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 8297 8298 ASSERT(newcp != NULL); 8299 8300 if (newcp == NULL) { 8301 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8302 rfs4_client_rele(cp_confirmed); 8303 goto out; 8304 } 8305 8306 /* 8307 * If one was not created, then a similar request must be in 8308 * process so release and start over with this one 8309 */ 8310 if (create != TRUE) { 8311 rfs4_client_rele(newcp); 8312 if (cp_confirmed) 8313 rfs4_client_rele(cp_confirmed); 8314 goto retry; 8315 } 8316 8317 *cs->statusp = res->status = NFS4_OK; 8318 res->SETCLIENTID4res_u.resok4.clientid = newcp->rc_clientid; 8319 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8320 newcp->rc_confirm_verf; 8321 /* Setup callback information; CB_NULL confirmation later */ 8322 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 8323 8324 newcp->rc_cp_confirmed = cp_confirmed; 8325 8326 rfs4_client_rele(newcp); 8327 8328 out: 8329 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 8330 SETCLIENTID4res *, res); 8331 } 8332 8333 /*ARGSUSED*/ 8334 void 8335 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 8336 struct svc_req *req, struct compound_state *cs) 8337 { 8338 SETCLIENTID_CONFIRM4args *args = 8339 &argop->nfs_argop4_u.opsetclientid_confirm; 8340 SETCLIENTID_CONFIRM4res *res = 8341 &resop->nfs_resop4_u.opsetclientid_confirm; 8342 rfs4_client_t *cp, *cptoclose = NULL; 8343 8344 DTRACE_NFSV4_2(op__setclientid__confirm__start, 8345 struct compound_state *, cs, 8346 SETCLIENTID_CONFIRM4args *, args); 8347 8348 *cs->statusp = res->status = NFS4_OK; 8349 8350 cp = rfs4_findclient_by_id(args->clientid, TRUE); 8351 8352 if (cp == NULL) { 8353 *cs->statusp = res->status = 8354 rfs4_check_clientid(&args->clientid, 1); 8355 goto out; 8356 } 8357 8358 if (!creds_ok(cp, req, cs)) { 8359 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8360 rfs4_client_rele(cp); 8361 goto out; 8362 } 8363 8364 /* If the verifier doesn't match, the record doesn't match */ 8365 if (cp->rc_confirm_verf != args->setclientid_confirm) { 8366 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8367 rfs4_client_rele(cp); 8368 goto out; 8369 } 8370 8371 rfs4_dbe_lock(cp->rc_dbe); 8372 cp->rc_need_confirm = FALSE; 8373 if (cp->rc_cp_confirmed) { 8374 cptoclose = cp->rc_cp_confirmed; 8375 cptoclose->rc_ss_remove = 1; 8376 cp->rc_cp_confirmed = NULL; 8377 } 8378 8379 /* 8380 * Update the client's associated server instance, if it's changed 8381 * since the client was created. 8382 */ 8383 if (rfs4_servinst(cp) != rfs4_cur_servinst) 8384 rfs4_servinst_assign(cp, rfs4_cur_servinst); 8385 8386 /* 8387 * Record clientid in stable storage. 8388 * Must be done after server instance has been assigned. 8389 */ 8390 rfs4_ss_clid(cp); 8391 8392 rfs4_dbe_unlock(cp->rc_dbe); 8393 8394 if (cptoclose) 8395 /* don't need to rele, client_close does it */ 8396 rfs4_client_close(cptoclose); 8397 8398 /* If needed, initiate CB_NULL call for callback path */ 8399 rfs4_deleg_cb_check(cp); 8400 rfs4_update_lease(cp); 8401 8402 /* 8403 * Check to see if client can perform reclaims 8404 */ 8405 rfs4_ss_chkclid(cp); 8406 8407 rfs4_client_rele(cp); 8408 8409 out: 8410 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8411 struct compound_state *, cs, 8412 SETCLIENTID_CONFIRM4 *, res); 8413 } 8414 8415 8416 /*ARGSUSED*/ 8417 void 8418 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8419 struct svc_req *req, struct compound_state *cs) 8420 { 8421 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8422 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8423 rfs4_state_t *sp; 8424 nfsstat4 status; 8425 8426 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8427 CLOSE4args *, args); 8428 8429 if (cs->vp == NULL) { 8430 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8431 goto out; 8432 } 8433 8434 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8435 if (status != NFS4_OK) { 8436 *cs->statusp = resp->status = status; 8437 goto out; 8438 } 8439 8440 /* Ensure specified filehandle matches */ 8441 if (cs->vp != sp->rs_finfo->rf_vp) { 8442 rfs4_state_rele(sp); 8443 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8444 goto out; 8445 } 8446 8447 /* hold off other access to open_owner while we tinker */ 8448 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8449 8450 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 8451 case NFS4_CHECK_STATEID_OKAY: 8452 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8453 resop) != NFS4_CHKSEQ_OKAY) { 8454 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8455 goto end; 8456 } 8457 break; 8458 case NFS4_CHECK_STATEID_OLD: 8459 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8460 goto end; 8461 case NFS4_CHECK_STATEID_BAD: 8462 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8463 goto end; 8464 case NFS4_CHECK_STATEID_EXPIRED: 8465 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8466 goto end; 8467 case NFS4_CHECK_STATEID_CLOSED: 8468 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8469 goto end; 8470 case NFS4_CHECK_STATEID_UNCONFIRMED: 8471 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8472 goto end; 8473 case NFS4_CHECK_STATEID_REPLAY: 8474 /* Check the sequence id for the open owner */ 8475 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8476 resop)) { 8477 case NFS4_CHKSEQ_OKAY: 8478 /* 8479 * This is replayed stateid; if seqid matches 8480 * next expected, then client is using wrong seqid. 8481 */ 8482 /* FALL THROUGH */ 8483 case NFS4_CHKSEQ_BAD: 8484 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8485 goto end; 8486 case NFS4_CHKSEQ_REPLAY: 8487 /* 8488 * Note this case is the duplicate case so 8489 * resp->status is already set. 8490 */ 8491 *cs->statusp = resp->status; 8492 rfs4_update_lease(sp->rs_owner->ro_client); 8493 goto end; 8494 } 8495 break; 8496 default: 8497 ASSERT(FALSE); 8498 break; 8499 } 8500 8501 rfs4_dbe_lock(sp->rs_dbe); 8502 8503 /* Update the stateid. */ 8504 next_stateid(&sp->rs_stateid); 8505 resp->open_stateid = sp->rs_stateid.stateid; 8506 8507 rfs4_dbe_unlock(sp->rs_dbe); 8508 8509 rfs4_update_lease(sp->rs_owner->ro_client); 8510 rfs4_update_open_sequence(sp->rs_owner); 8511 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8512 8513 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8514 8515 *cs->statusp = resp->status = status; 8516 8517 end: 8518 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8519 rfs4_state_rele(sp); 8520 out: 8521 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8522 CLOSE4res *, resp); 8523 } 8524 8525 /* 8526 * Manage the counts on the file struct and close all file locks 8527 */ 8528 /*ARGSUSED*/ 8529 void 8530 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8531 bool_t close_of_client) 8532 { 8533 rfs4_file_t *fp = sp->rs_finfo; 8534 rfs4_lo_state_t *lsp; 8535 int fflags = 0; 8536 8537 /* 8538 * If this call is part of the larger closing down of client 8539 * state then it is just easier to release all locks 8540 * associated with this client instead of going through each 8541 * individual file and cleaning locks there. 8542 */ 8543 if (close_of_client) { 8544 if (sp->rs_owner->ro_client->rc_unlksys_completed == FALSE && 8545 !list_is_empty(&sp->rs_lostatelist) && 8546 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) { 8547 /* Is the PxFS kernel module loaded? */ 8548 if (lm_remove_file_locks != NULL) { 8549 int new_sysid; 8550 8551 /* Encode the cluster nodeid in new sysid */ 8552 new_sysid = sp->rs_owner->ro_client->rc_sysidt; 8553 lm_set_nlmid_flk(&new_sysid); 8554 8555 /* 8556 * This PxFS routine removes file locks for a 8557 * client over all nodes of a cluster. 8558 */ 8559 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8560 "lm_remove_file_locks(sysid=0x%x)\n", 8561 new_sysid)); 8562 (*lm_remove_file_locks)(new_sysid); 8563 } else { 8564 struct flock64 flk; 8565 8566 /* Release all locks for this client */ 8567 flk.l_type = F_UNLKSYS; 8568 flk.l_whence = 0; 8569 flk.l_start = 0; 8570 flk.l_len = 0; 8571 flk.l_sysid = 8572 sp->rs_owner->ro_client->rc_sysidt; 8573 flk.l_pid = 0; 8574 (void) VOP_FRLOCK(sp->rs_finfo->rf_vp, F_SETLK, 8575 &flk, F_REMOTELOCK | FREAD | FWRITE, 8576 (u_offset_t)0, NULL, CRED(), NULL); 8577 } 8578 8579 sp->rs_owner->ro_client->rc_unlksys_completed = TRUE; 8580 } 8581 } 8582 8583 /* 8584 * Release all locks on this file by this lock owner or at 8585 * least mark the locks as having been released 8586 */ 8587 for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL; 8588 lsp = list_next(&sp->rs_lostatelist, lsp)) { 8589 lsp->rls_locks_cleaned = TRUE; 8590 8591 /* Was this already taken care of above? */ 8592 if (!close_of_client && 8593 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8594 (void) cleanlocks(sp->rs_finfo->rf_vp, 8595 lsp->rls_locker->rl_pid, 8596 lsp->rls_locker->rl_client->rc_sysidt); 8597 } 8598 8599 /* 8600 * Release any shrlocks associated with this open state ID. 8601 * This must be done before the rfs4_state gets marked closed. 8602 */ 8603 if (sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8604 (void) rfs4_unshare(sp); 8605 8606 if (sp->rs_open_access) { 8607 rfs4_dbe_lock(fp->rf_dbe); 8608 8609 /* 8610 * Decrement the count for each access and deny bit that this 8611 * state has contributed to the file. 8612 * If the file counts go to zero 8613 * clear the appropriate bit in the appropriate mask. 8614 */ 8615 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) { 8616 fp->rf_access_read--; 8617 fflags |= FREAD; 8618 if (fp->rf_access_read == 0) 8619 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8620 } 8621 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) { 8622 fp->rf_access_write--; 8623 fflags |= FWRITE; 8624 if (fp->rf_access_write == 0) 8625 fp->rf_share_access &= 8626 ~OPEN4_SHARE_ACCESS_WRITE; 8627 } 8628 if (sp->rs_open_deny & OPEN4_SHARE_DENY_READ) { 8629 fp->rf_deny_read--; 8630 if (fp->rf_deny_read == 0) 8631 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8632 } 8633 if (sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) { 8634 fp->rf_deny_write--; 8635 if (fp->rf_deny_write == 0) 8636 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8637 } 8638 8639 (void) VOP_CLOSE(fp->rf_vp, fflags, 1, (offset_t)0, cr, NULL); 8640 8641 rfs4_dbe_unlock(fp->rf_dbe); 8642 8643 sp->rs_open_access = 0; 8644 sp->rs_open_deny = 0; 8645 } 8646 } 8647 8648 /* 8649 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8650 */ 8651 static nfsstat4 8652 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8653 { 8654 rfs4_lockowner_t *lo; 8655 rfs4_client_t *cp; 8656 uint32_t len; 8657 8658 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8659 if (lo != NULL) { 8660 cp = lo->rl_client; 8661 if (rfs4_lease_expired(cp)) { 8662 rfs4_lockowner_rele(lo); 8663 rfs4_dbe_hold(cp->rc_dbe); 8664 rfs4_client_close(cp); 8665 return (NFS4ERR_EXPIRED); 8666 } 8667 dp->owner.clientid = lo->rl_owner.clientid; 8668 len = lo->rl_owner.owner_len; 8669 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8670 bcopy(lo->rl_owner.owner_val, dp->owner.owner_val, len); 8671 dp->owner.owner_len = len; 8672 rfs4_lockowner_rele(lo); 8673 goto finish; 8674 } 8675 8676 /* 8677 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8678 * of the client id contain the boot time for a NFS4 lock. So we 8679 * fabricate and identity by setting clientid to the sysid, and 8680 * the lock owner to the pid. 8681 */ 8682 dp->owner.clientid = flk->l_sysid; 8683 len = sizeof (pid_t); 8684 dp->owner.owner_len = len; 8685 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8686 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8687 finish: 8688 dp->offset = flk->l_start; 8689 dp->length = flk->l_len; 8690 8691 if (flk->l_type == F_RDLCK) 8692 dp->locktype = READ_LT; 8693 else if (flk->l_type == F_WRLCK) 8694 dp->locktype = WRITE_LT; 8695 else 8696 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8697 8698 return (NFS4_OK); 8699 } 8700 8701 static int 8702 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8703 { 8704 int error; 8705 struct flock64 flk; 8706 int i; 8707 clock_t delaytime; 8708 int cmd; 8709 8710 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8711 retry: 8712 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8713 8714 for (i = 0; i < rfs4_maxlock_tries; i++) { 8715 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8716 error = VOP_FRLOCK(vp, cmd, 8717 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8718 8719 if (error != EAGAIN && error != EACCES) 8720 break; 8721 8722 if (i < rfs4_maxlock_tries - 1) { 8723 delay(delaytime); 8724 delaytime *= 2; 8725 } 8726 } 8727 8728 if (error == EAGAIN || error == EACCES) { 8729 /* Get the owner of the lock */ 8730 flk = *flock; 8731 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8732 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 8733 (u_offset_t)0, NULL, cred, NULL) == 0) { 8734 if (flk.l_type == F_UNLCK) { 8735 /* No longer locked, retry */ 8736 goto retry; 8737 } 8738 *flock = flk; 8739 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8740 F_GETLK, &flk); 8741 } 8742 } 8743 8744 return (error); 8745 } 8746 8747 /*ARGSUSED*/ 8748 static nfsstat4 8749 rfs4_do_lock(rfs4_lo_state_t *lsp, nfs_lock_type4 locktype, 8750 offset4 offset, length4 length, cred_t *cred, nfs_resop4 *resop) 8751 { 8752 nfsstat4 status; 8753 rfs4_lockowner_t *lo = lsp->rls_locker; 8754 rfs4_state_t *sp = lsp->rls_state; 8755 struct flock64 flock; 8756 int16_t ltype; 8757 int flag; 8758 int error; 8759 sysid_t sysid; 8760 LOCK4res *lres; 8761 8762 if (rfs4_lease_expired(lo->rl_client)) { 8763 return (NFS4ERR_EXPIRED); 8764 } 8765 8766 if ((status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 8767 return (status); 8768 8769 /* Check for zero length. To lock to end of file use all ones for V4 */ 8770 if (length == 0) 8771 return (NFS4ERR_INVAL); 8772 else if (length == (length4)(~0)) 8773 length = 0; /* Posix to end of file */ 8774 8775 retry: 8776 rfs4_dbe_lock(sp->rs_dbe); 8777 if (sp->rs_closed) { 8778 rfs4_dbe_unlock(sp->rs_dbe); 8779 return (NFS4ERR_OLD_STATEID); 8780 } 8781 8782 if (resop->resop != OP_LOCKU) { 8783 switch (locktype) { 8784 case READ_LT: 8785 case READW_LT: 8786 if ((sp->rs_share_access 8787 & OPEN4_SHARE_ACCESS_READ) == 0) { 8788 rfs4_dbe_unlock(sp->rs_dbe); 8789 8790 return (NFS4ERR_OPENMODE); 8791 } 8792 ltype = F_RDLCK; 8793 break; 8794 case WRITE_LT: 8795 case WRITEW_LT: 8796 if ((sp->rs_share_access 8797 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8798 rfs4_dbe_unlock(sp->rs_dbe); 8799 8800 return (NFS4ERR_OPENMODE); 8801 } 8802 ltype = F_WRLCK; 8803 break; 8804 } 8805 } else 8806 ltype = F_UNLCK; 8807 8808 flock.l_type = ltype; 8809 flock.l_whence = 0; /* SEEK_SET */ 8810 flock.l_start = offset; 8811 flock.l_len = length; 8812 flock.l_sysid = sysid; 8813 flock.l_pid = lsp->rls_locker->rl_pid; 8814 8815 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8816 if (flock.l_len < 0 || flock.l_start < 0) { 8817 rfs4_dbe_unlock(sp->rs_dbe); 8818 return (NFS4ERR_INVAL); 8819 } 8820 8821 /* 8822 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8823 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8824 */ 8825 flag = (int)sp->rs_share_access | F_REMOTELOCK; 8826 8827 error = setlock(sp->rs_finfo->rf_vp, &flock, flag, cred); 8828 if (error == 0) { 8829 rfs4_dbe_lock(lsp->rls_dbe); 8830 next_stateid(&lsp->rls_lockid); 8831 rfs4_dbe_unlock(lsp->rls_dbe); 8832 } 8833 8834 rfs4_dbe_unlock(sp->rs_dbe); 8835 8836 /* 8837 * N.B. We map error values to nfsv4 errors. This is differrent 8838 * than puterrno4 routine. 8839 */ 8840 switch (error) { 8841 case 0: 8842 status = NFS4_OK; 8843 break; 8844 case EAGAIN: 8845 case EACCES: /* Old value */ 8846 /* Can only get here if op is OP_LOCK */ 8847 ASSERT(resop->resop == OP_LOCK); 8848 lres = &resop->nfs_resop4_u.oplock; 8849 status = NFS4ERR_DENIED; 8850 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8851 == NFS4ERR_EXPIRED) 8852 goto retry; 8853 break; 8854 case ENOLCK: 8855 status = NFS4ERR_DELAY; 8856 break; 8857 case EOVERFLOW: 8858 status = NFS4ERR_INVAL; 8859 break; 8860 case EINVAL: 8861 status = NFS4ERR_NOTSUPP; 8862 break; 8863 default: 8864 status = NFS4ERR_SERVERFAULT; 8865 break; 8866 } 8867 8868 return (status); 8869 } 8870 8871 /*ARGSUSED*/ 8872 void 8873 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8874 struct svc_req *req, struct compound_state *cs) 8875 { 8876 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8877 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8878 nfsstat4 status; 8879 stateid4 *stateid; 8880 rfs4_lockowner_t *lo; 8881 rfs4_client_t *cp; 8882 rfs4_state_t *sp = NULL; 8883 rfs4_lo_state_t *lsp = NULL; 8884 bool_t ls_sw_held = FALSE; 8885 bool_t create = TRUE; 8886 bool_t lcreate = TRUE; 8887 bool_t dup_lock = FALSE; 8888 int rc; 8889 8890 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8891 LOCK4args *, args); 8892 8893 if (cs->vp == NULL) { 8894 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8895 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8896 cs, LOCK4res *, resp); 8897 return; 8898 } 8899 8900 if (args->locker.new_lock_owner) { 8901 /* Create a new lockowner for this instance */ 8902 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8903 8904 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8905 8906 stateid = &olo->open_stateid; 8907 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8908 if (status != NFS4_OK) { 8909 NFS4_DEBUG(rfs4_debug, 8910 (CE_NOTE, "Get state failed in lock %d", status)); 8911 *cs->statusp = resp->status = status; 8912 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8913 cs, LOCK4res *, resp); 8914 return; 8915 } 8916 8917 /* Ensure specified filehandle matches */ 8918 if (cs->vp != sp->rs_finfo->rf_vp) { 8919 rfs4_state_rele(sp); 8920 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8921 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8922 cs, LOCK4res *, resp); 8923 return; 8924 } 8925 8926 /* hold off other access to open_owner while we tinker */ 8927 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8928 8929 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8930 case NFS4_CHECK_STATEID_OLD: 8931 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8932 goto end; 8933 case NFS4_CHECK_STATEID_BAD: 8934 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8935 goto end; 8936 case NFS4_CHECK_STATEID_EXPIRED: 8937 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8938 goto end; 8939 case NFS4_CHECK_STATEID_UNCONFIRMED: 8940 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8941 goto end; 8942 case NFS4_CHECK_STATEID_CLOSED: 8943 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8944 goto end; 8945 case NFS4_CHECK_STATEID_OKAY: 8946 case NFS4_CHECK_STATEID_REPLAY: 8947 switch (rfs4_check_olo_seqid(olo->open_seqid, 8948 sp->rs_owner, resop)) { 8949 case NFS4_CHKSEQ_OKAY: 8950 if (rc == NFS4_CHECK_STATEID_OKAY) 8951 break; 8952 /* 8953 * This is replayed stateid; if seqid 8954 * matches next expected, then client 8955 * is using wrong seqid. 8956 */ 8957 /* FALLTHROUGH */ 8958 case NFS4_CHKSEQ_BAD: 8959 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8960 goto end; 8961 case NFS4_CHKSEQ_REPLAY: 8962 /* This is a duplicate LOCK request */ 8963 dup_lock = TRUE; 8964 8965 /* 8966 * For a duplicate we do not want to 8967 * create a new lockowner as it should 8968 * already exist. 8969 * Turn off the lockowner create flag. 8970 */ 8971 lcreate = FALSE; 8972 } 8973 break; 8974 } 8975 8976 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8977 if (lo == NULL) { 8978 NFS4_DEBUG(rfs4_debug, 8979 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8980 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8981 goto end; 8982 } 8983 8984 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8985 if (lsp == NULL) { 8986 rfs4_update_lease(sp->rs_owner->ro_client); 8987 /* 8988 * Only update theh open_seqid if this is not 8989 * a duplicate request 8990 */ 8991 if (dup_lock == FALSE) { 8992 rfs4_update_open_sequence(sp->rs_owner); 8993 } 8994 8995 NFS4_DEBUG(rfs4_debug, 8996 (CE_NOTE, "rfs4_op_lock: no state")); 8997 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8998 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8999 rfs4_lockowner_rele(lo); 9000 goto end; 9001 } 9002 9003 /* 9004 * This is the new_lock_owner branch and the client is 9005 * supposed to be associating a new lock_owner with 9006 * the open file at this point. If we find that a 9007 * lock_owner/state association already exists and a 9008 * successful LOCK request was returned to the client, 9009 * an error is returned to the client since this is 9010 * not appropriate. The client should be using the 9011 * existing lock_owner branch. 9012 */ 9013 if (dup_lock == FALSE && create == FALSE) { 9014 if (lsp->rls_lock_completed == TRUE) { 9015 *cs->statusp = 9016 resp->status = NFS4ERR_BAD_SEQID; 9017 rfs4_lockowner_rele(lo); 9018 goto end; 9019 } 9020 } 9021 9022 rfs4_update_lease(sp->rs_owner->ro_client); 9023 9024 /* 9025 * Only update theh open_seqid if this is not 9026 * a duplicate request 9027 */ 9028 if (dup_lock == FALSE) { 9029 rfs4_update_open_sequence(sp->rs_owner); 9030 } 9031 9032 /* 9033 * If this is a duplicate lock request, just copy the 9034 * previously saved reply and return. 9035 */ 9036 if (dup_lock == TRUE) { 9037 /* verify that lock_seqid's match */ 9038 if (lsp->rls_seqid != olo->lock_seqid) { 9039 NFS4_DEBUG(rfs4_debug, 9040 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 9041 "lsp->seqid=%d old->seqid=%d", 9042 lsp->rls_seqid, olo->lock_seqid)); 9043 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9044 } else { 9045 rfs4_copy_reply(resop, &lsp->rls_reply); 9046 /* 9047 * Make sure to copy the just 9048 * retrieved reply status into the 9049 * overall compound status 9050 */ 9051 *cs->statusp = resp->status; 9052 } 9053 rfs4_lockowner_rele(lo); 9054 goto end; 9055 } 9056 9057 rfs4_dbe_lock(lsp->rls_dbe); 9058 9059 /* Make sure to update the lock sequence id */ 9060 lsp->rls_seqid = olo->lock_seqid; 9061 9062 NFS4_DEBUG(rfs4_debug, 9063 (CE_NOTE, "Lock seqid established as %d", lsp->rls_seqid)); 9064 9065 /* 9066 * This is used to signify the newly created lockowner 9067 * stateid and its sequence number. The checks for 9068 * sequence number and increment don't occur on the 9069 * very first lock request for a lockowner. 9070 */ 9071 lsp->rls_skip_seqid_check = TRUE; 9072 9073 /* hold off other access to lsp while we tinker */ 9074 rfs4_sw_enter(&lsp->rls_sw); 9075 ls_sw_held = TRUE; 9076 9077 rfs4_dbe_unlock(lsp->rls_dbe); 9078 9079 rfs4_lockowner_rele(lo); 9080 } else { 9081 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 9082 /* get lsp and hold the lock on the underlying file struct */ 9083 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 9084 != NFS4_OK) { 9085 *cs->statusp = resp->status = status; 9086 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9087 cs, LOCK4res *, resp); 9088 return; 9089 } 9090 create = FALSE; /* We didn't create lsp */ 9091 9092 /* Ensure specified filehandle matches */ 9093 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9094 rfs4_lo_state_rele(lsp, TRUE); 9095 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9096 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9097 cs, LOCK4res *, resp); 9098 return; 9099 } 9100 9101 /* hold off other access to lsp while we tinker */ 9102 rfs4_sw_enter(&lsp->rls_sw); 9103 ls_sw_held = TRUE; 9104 9105 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9106 /* 9107 * The stateid looks like it was okay (expected to be 9108 * the next one) 9109 */ 9110 case NFS4_CHECK_STATEID_OKAY: 9111 /* 9112 * The sequence id is now checked. Determine 9113 * if this is a replay or if it is in the 9114 * expected (next) sequence. In the case of a 9115 * replay, there are two replay conditions 9116 * that may occur. The first is the normal 9117 * condition where a LOCK is done with a 9118 * NFS4_OK response and the stateid is 9119 * updated. That case is handled below when 9120 * the stateid is identified as a REPLAY. The 9121 * second is the case where an error is 9122 * returned, like NFS4ERR_DENIED, and the 9123 * sequence number is updated but the stateid 9124 * is not updated. This second case is dealt 9125 * with here. So it may seem odd that the 9126 * stateid is okay but the sequence id is a 9127 * replay but it is okay. 9128 */ 9129 switch (rfs4_check_lock_seqid( 9130 args->locker.locker4_u.lock_owner.lock_seqid, 9131 lsp, resop)) { 9132 case NFS4_CHKSEQ_REPLAY: 9133 if (resp->status != NFS4_OK) { 9134 /* 9135 * Here is our replay and need 9136 * to verify that the last 9137 * response was an error. 9138 */ 9139 *cs->statusp = resp->status; 9140 goto end; 9141 } 9142 /* 9143 * This is done since the sequence id 9144 * looked like a replay but it didn't 9145 * pass our check so a BAD_SEQID is 9146 * returned as a result. 9147 */ 9148 /*FALLTHROUGH*/ 9149 case NFS4_CHKSEQ_BAD: 9150 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9151 goto end; 9152 case NFS4_CHKSEQ_OKAY: 9153 /* Everything looks okay move ahead */ 9154 break; 9155 } 9156 break; 9157 case NFS4_CHECK_STATEID_OLD: 9158 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9159 goto end; 9160 case NFS4_CHECK_STATEID_BAD: 9161 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9162 goto end; 9163 case NFS4_CHECK_STATEID_EXPIRED: 9164 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9165 goto end; 9166 case NFS4_CHECK_STATEID_CLOSED: 9167 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9168 goto end; 9169 case NFS4_CHECK_STATEID_REPLAY: 9170 switch (rfs4_check_lock_seqid( 9171 args->locker.locker4_u.lock_owner.lock_seqid, 9172 lsp, resop)) { 9173 case NFS4_CHKSEQ_OKAY: 9174 /* 9175 * This is a replayed stateid; if 9176 * seqid matches the next expected, 9177 * then client is using wrong seqid. 9178 */ 9179 case NFS4_CHKSEQ_BAD: 9180 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9181 goto end; 9182 case NFS4_CHKSEQ_REPLAY: 9183 rfs4_update_lease(lsp->rls_locker->rl_client); 9184 *cs->statusp = status = resp->status; 9185 goto end; 9186 } 9187 break; 9188 default: 9189 ASSERT(FALSE); 9190 break; 9191 } 9192 9193 rfs4_update_lock_sequence(lsp); 9194 rfs4_update_lease(lsp->rls_locker->rl_client); 9195 } 9196 9197 /* 9198 * NFS4 only allows locking on regular files, so 9199 * verify type of object. 9200 */ 9201 if (cs->vp->v_type != VREG) { 9202 if (cs->vp->v_type == VDIR) 9203 status = NFS4ERR_ISDIR; 9204 else 9205 status = NFS4ERR_INVAL; 9206 goto out; 9207 } 9208 9209 cp = lsp->rls_state->rs_owner->ro_client; 9210 9211 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 9212 status = NFS4ERR_GRACE; 9213 goto out; 9214 } 9215 9216 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->rc_can_reclaim) { 9217 status = NFS4ERR_NO_GRACE; 9218 goto out; 9219 } 9220 9221 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 9222 status = NFS4ERR_NO_GRACE; 9223 goto out; 9224 } 9225 9226 if (lsp->rls_state->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) 9227 cs->deleg = TRUE; 9228 9229 status = rfs4_do_lock(lsp, args->locktype, 9230 args->offset, args->length, cs->cr, resop); 9231 9232 out: 9233 lsp->rls_skip_seqid_check = FALSE; 9234 9235 *cs->statusp = resp->status = status; 9236 9237 if (status == NFS4_OK) { 9238 resp->LOCK4res_u.lock_stateid = lsp->rls_lockid.stateid; 9239 lsp->rls_lock_completed = TRUE; 9240 } 9241 /* 9242 * Only update the "OPEN" response here if this was a new 9243 * lock_owner 9244 */ 9245 if (sp) 9246 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9247 9248 rfs4_update_lock_resp(lsp, resop); 9249 9250 end: 9251 if (lsp) { 9252 if (ls_sw_held) 9253 rfs4_sw_exit(&lsp->rls_sw); 9254 /* 9255 * If an sp obtained, then the lsp does not represent 9256 * a lock on the file struct. 9257 */ 9258 if (sp != NULL) 9259 rfs4_lo_state_rele(lsp, FALSE); 9260 else 9261 rfs4_lo_state_rele(lsp, TRUE); 9262 } 9263 if (sp) { 9264 rfs4_sw_exit(&sp->rs_owner->ro_sw); 9265 rfs4_state_rele(sp); 9266 } 9267 9268 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 9269 LOCK4res *, resp); 9270 } 9271 9272 /* free function for LOCK/LOCKT */ 9273 static void 9274 lock_denied_free(nfs_resop4 *resop) 9275 { 9276 LOCK4denied *dp = NULL; 9277 9278 switch (resop->resop) { 9279 case OP_LOCK: 9280 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 9281 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 9282 break; 9283 case OP_LOCKT: 9284 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 9285 dp = &resop->nfs_resop4_u.oplockt.denied; 9286 break; 9287 default: 9288 break; 9289 } 9290 9291 if (dp) 9292 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 9293 } 9294 9295 /*ARGSUSED*/ 9296 void 9297 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 9298 struct svc_req *req, struct compound_state *cs) 9299 { 9300 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 9301 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 9302 nfsstat4 status; 9303 stateid4 *stateid = &args->lock_stateid; 9304 rfs4_lo_state_t *lsp; 9305 9306 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 9307 LOCKU4args *, args); 9308 9309 if (cs->vp == NULL) { 9310 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9311 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9312 LOCKU4res *, resp); 9313 return; 9314 } 9315 9316 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 9317 *cs->statusp = resp->status = status; 9318 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9319 LOCKU4res *, resp); 9320 return; 9321 } 9322 9323 /* Ensure specified filehandle matches */ 9324 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9325 rfs4_lo_state_rele(lsp, TRUE); 9326 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9327 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9328 LOCKU4res *, resp); 9329 return; 9330 } 9331 9332 /* hold off other access to lsp while we tinker */ 9333 rfs4_sw_enter(&lsp->rls_sw); 9334 9335 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9336 case NFS4_CHECK_STATEID_OKAY: 9337 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 9338 != NFS4_CHKSEQ_OKAY) { 9339 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9340 goto end; 9341 } 9342 break; 9343 case NFS4_CHECK_STATEID_OLD: 9344 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9345 goto end; 9346 case NFS4_CHECK_STATEID_BAD: 9347 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9348 goto end; 9349 case NFS4_CHECK_STATEID_EXPIRED: 9350 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9351 goto end; 9352 case NFS4_CHECK_STATEID_CLOSED: 9353 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9354 goto end; 9355 case NFS4_CHECK_STATEID_REPLAY: 9356 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9357 case NFS4_CHKSEQ_OKAY: 9358 /* 9359 * This is a replayed stateid; if 9360 * seqid matches the next expected, 9361 * then client is using wrong seqid. 9362 */ 9363 case NFS4_CHKSEQ_BAD: 9364 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9365 goto end; 9366 case NFS4_CHKSEQ_REPLAY: 9367 rfs4_update_lease(lsp->rls_locker->rl_client); 9368 *cs->statusp = status = resp->status; 9369 goto end; 9370 } 9371 break; 9372 default: 9373 ASSERT(FALSE); 9374 break; 9375 } 9376 9377 rfs4_update_lock_sequence(lsp); 9378 rfs4_update_lease(lsp->rls_locker->rl_client); 9379 9380 /* 9381 * NFS4 only allows locking on regular files, so 9382 * verify type of object. 9383 */ 9384 if (cs->vp->v_type != VREG) { 9385 if (cs->vp->v_type == VDIR) 9386 status = NFS4ERR_ISDIR; 9387 else 9388 status = NFS4ERR_INVAL; 9389 goto out; 9390 } 9391 9392 if (rfs4_clnt_in_grace(lsp->rls_state->rs_owner->ro_client)) { 9393 status = NFS4ERR_GRACE; 9394 goto out; 9395 } 9396 9397 status = rfs4_do_lock(lsp, args->locktype, 9398 args->offset, args->length, cs->cr, resop); 9399 9400 out: 9401 *cs->statusp = resp->status = status; 9402 9403 if (status == NFS4_OK) 9404 resp->lock_stateid = lsp->rls_lockid.stateid; 9405 9406 rfs4_update_lock_resp(lsp, resop); 9407 9408 end: 9409 rfs4_sw_exit(&lsp->rls_sw); 9410 rfs4_lo_state_rele(lsp, TRUE); 9411 9412 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9413 LOCKU4res *, resp); 9414 } 9415 9416 /* 9417 * LOCKT is a best effort routine, the client can not be guaranteed that 9418 * the status return is still in effect by the time the reply is received. 9419 * They are numerous race conditions in this routine, but we are not required 9420 * and can not be accurate. 9421 */ 9422 /*ARGSUSED*/ 9423 void 9424 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9425 struct svc_req *req, struct compound_state *cs) 9426 { 9427 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9428 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9429 rfs4_lockowner_t *lo; 9430 rfs4_client_t *cp; 9431 bool_t create = FALSE; 9432 struct flock64 flk; 9433 int error; 9434 int flag = FREAD | FWRITE; 9435 int ltype; 9436 length4 posix_length; 9437 sysid_t sysid; 9438 pid_t pid; 9439 9440 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9441 LOCKT4args *, args); 9442 9443 if (cs->vp == NULL) { 9444 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9445 goto out; 9446 } 9447 9448 /* 9449 * NFS4 only allows locking on regular files, so 9450 * verify type of object. 9451 */ 9452 if (cs->vp->v_type != VREG) { 9453 if (cs->vp->v_type == VDIR) 9454 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9455 else 9456 *cs->statusp = resp->status = NFS4ERR_INVAL; 9457 goto out; 9458 } 9459 9460 /* 9461 * Check out the clientid to ensure the server knows about it 9462 * so that we correctly inform the client of a server reboot. 9463 */ 9464 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9465 == NULL) { 9466 *cs->statusp = resp->status = 9467 rfs4_check_clientid(&args->owner.clientid, 0); 9468 goto out; 9469 } 9470 if (rfs4_lease_expired(cp)) { 9471 rfs4_client_close(cp); 9472 /* 9473 * Protocol doesn't allow returning NFS4ERR_STALE as 9474 * other operations do on this check so STALE_CLIENTID 9475 * is returned instead 9476 */ 9477 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9478 goto out; 9479 } 9480 9481 if (rfs4_clnt_in_grace(cp) && !(cp->rc_can_reclaim)) { 9482 *cs->statusp = resp->status = NFS4ERR_GRACE; 9483 rfs4_client_rele(cp); 9484 goto out; 9485 } 9486 rfs4_client_rele(cp); 9487 9488 resp->status = NFS4_OK; 9489 9490 switch (args->locktype) { 9491 case READ_LT: 9492 case READW_LT: 9493 ltype = F_RDLCK; 9494 break; 9495 case WRITE_LT: 9496 case WRITEW_LT: 9497 ltype = F_WRLCK; 9498 break; 9499 } 9500 9501 posix_length = args->length; 9502 /* Check for zero length. To lock to end of file use all ones for V4 */ 9503 if (posix_length == 0) { 9504 *cs->statusp = resp->status = NFS4ERR_INVAL; 9505 goto out; 9506 } else if (posix_length == (length4)(~0)) { 9507 posix_length = 0; /* Posix to end of file */ 9508 } 9509 9510 /* Find or create a lockowner */ 9511 lo = rfs4_findlockowner(&args->owner, &create); 9512 9513 if (lo) { 9514 pid = lo->rl_pid; 9515 if ((resp->status = 9516 rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 9517 goto err; 9518 } else { 9519 pid = 0; 9520 sysid = lockt_sysid; 9521 } 9522 retry: 9523 flk.l_type = ltype; 9524 flk.l_whence = 0; /* SEEK_SET */ 9525 flk.l_start = args->offset; 9526 flk.l_len = posix_length; 9527 flk.l_sysid = sysid; 9528 flk.l_pid = pid; 9529 flag |= F_REMOTELOCK; 9530 9531 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9532 9533 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9534 if (flk.l_len < 0 || flk.l_start < 0) { 9535 resp->status = NFS4ERR_INVAL; 9536 goto err; 9537 } 9538 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9539 NULL, cs->cr, NULL); 9540 9541 /* 9542 * N.B. We map error values to nfsv4 errors. This is differrent 9543 * than puterrno4 routine. 9544 */ 9545 switch (error) { 9546 case 0: 9547 if (flk.l_type == F_UNLCK) 9548 resp->status = NFS4_OK; 9549 else { 9550 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9551 goto retry; 9552 resp->status = NFS4ERR_DENIED; 9553 } 9554 break; 9555 case EOVERFLOW: 9556 resp->status = NFS4ERR_INVAL; 9557 break; 9558 case EINVAL: 9559 resp->status = NFS4ERR_NOTSUPP; 9560 break; 9561 default: 9562 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9563 error); 9564 resp->status = NFS4ERR_SERVERFAULT; 9565 break; 9566 } 9567 9568 err: 9569 if (lo) 9570 rfs4_lockowner_rele(lo); 9571 *cs->statusp = resp->status; 9572 out: 9573 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9574 LOCKT4res *, resp); 9575 } 9576 9577 int 9578 rfs4_share(rfs4_state_t *sp, uint32_t access, uint32_t deny) 9579 { 9580 int err; 9581 int cmd; 9582 vnode_t *vp; 9583 struct shrlock shr; 9584 struct shr_locowner shr_loco; 9585 int fflags = 0; 9586 9587 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9588 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9589 9590 if (sp->rs_closed) 9591 return (NFS4ERR_OLD_STATEID); 9592 9593 vp = sp->rs_finfo->rf_vp; 9594 ASSERT(vp); 9595 9596 shr.s_access = shr.s_deny = 0; 9597 9598 if (access & OPEN4_SHARE_ACCESS_READ) { 9599 fflags |= FREAD; 9600 shr.s_access |= F_RDACC; 9601 } 9602 if (access & OPEN4_SHARE_ACCESS_WRITE) { 9603 fflags |= FWRITE; 9604 shr.s_access |= F_WRACC; 9605 } 9606 ASSERT(shr.s_access); 9607 9608 if (deny & OPEN4_SHARE_DENY_READ) 9609 shr.s_deny |= F_RDDNY; 9610 if (deny & OPEN4_SHARE_DENY_WRITE) 9611 shr.s_deny |= F_WRDNY; 9612 9613 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9614 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9615 shr_loco.sl_pid = shr.s_pid; 9616 shr_loco.sl_id = shr.s_sysid; 9617 shr.s_owner = (caddr_t)&shr_loco; 9618 shr.s_own_len = sizeof (shr_loco); 9619 9620 cmd = nbl_need_check(vp) ? F_SHARE_NBMAND : F_SHARE; 9621 9622 err = VOP_SHRLOCK(vp, cmd, &shr, fflags, CRED(), NULL); 9623 if (err != 0) { 9624 if (err == EAGAIN) 9625 err = NFS4ERR_SHARE_DENIED; 9626 else 9627 err = puterrno4(err); 9628 return (err); 9629 } 9630 9631 sp->rs_share_access |= access; 9632 sp->rs_share_deny |= deny; 9633 9634 return (0); 9635 } 9636 9637 int 9638 rfs4_unshare(rfs4_state_t *sp) 9639 { 9640 int err; 9641 struct shrlock shr; 9642 struct shr_locowner shr_loco; 9643 9644 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9645 9646 if (sp->rs_closed || sp->rs_share_access == 0) 9647 return (0); 9648 9649 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9650 ASSERT(sp->rs_finfo->rf_vp); 9651 9652 shr.s_access = shr.s_deny = 0; 9653 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9654 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9655 shr_loco.sl_pid = shr.s_pid; 9656 shr_loco.sl_id = shr.s_sysid; 9657 shr.s_owner = (caddr_t)&shr_loco; 9658 shr.s_own_len = sizeof (shr_loco); 9659 9660 err = VOP_SHRLOCK(sp->rs_finfo->rf_vp, F_UNSHARE, &shr, 0, CRED(), 9661 NULL); 9662 if (err != 0) { 9663 err = puterrno4(err); 9664 return (err); 9665 } 9666 9667 sp->rs_share_access = 0; 9668 sp->rs_share_deny = 0; 9669 9670 return (0); 9671 9672 } 9673 9674 static int 9675 rdma_setup_read_data4(READ4args *args, READ4res *rok) 9676 { 9677 struct clist *wcl; 9678 count4 count = rok->data_len; 9679 int wlist_len; 9680 9681 wcl = args->wlist; 9682 if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) { 9683 return (FALSE); 9684 } 9685 wcl = args->wlist; 9686 rok->wlist_len = wlist_len; 9687 rok->wlist = wcl; 9688 return (TRUE); 9689 } 9690 9691 /* tunable to disable server referrals */ 9692 int rfs4_no_referrals = 0; 9693 9694 /* 9695 * Find an NFS record in reparse point data. 9696 * Returns 0 for success and <0 or an errno value on failure. 9697 */ 9698 int 9699 vn_find_nfs_record(vnode_t *vp, nvlist_t **nvlp, char **svcp, char **datap) 9700 { 9701 int err; 9702 char *stype, *val; 9703 nvlist_t *nvl; 9704 nvpair_t *curr; 9705 9706 if ((nvl = reparse_init()) == NULL) 9707 return (-1); 9708 9709 if ((err = reparse_vnode_parse(vp, nvl)) != 0) { 9710 reparse_free(nvl); 9711 return (err); 9712 } 9713 9714 curr = NULL; 9715 while ((curr = nvlist_next_nvpair(nvl, curr)) != NULL) { 9716 if ((stype = nvpair_name(curr)) == NULL) { 9717 reparse_free(nvl); 9718 return (-2); 9719 } 9720 if (strncasecmp(stype, "NFS", 3) == 0) 9721 break; 9722 } 9723 9724 if ((curr == NULL) || 9725 (nvpair_value_string(curr, &val))) { 9726 reparse_free(nvl); 9727 return (-3); 9728 } 9729 *nvlp = nvl; 9730 *svcp = stype; 9731 *datap = val; 9732 return (0); 9733 } 9734 9735 int 9736 vn_is_nfs_reparse(vnode_t *vp, cred_t *cr) 9737 { 9738 nvlist_t *nvl; 9739 char *s, *d; 9740 9741 if (rfs4_no_referrals != 0) 9742 return (B_FALSE); 9743 9744 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9745 return (B_FALSE); 9746 9747 if (vn_find_nfs_record(vp, &nvl, &s, &d) != 0) 9748 return (B_FALSE); 9749 9750 reparse_free(nvl); 9751 9752 return (B_TRUE); 9753 } 9754 9755 /* 9756 * There is a user-level copy of this routine in ref_subr.c. 9757 * Changes should be kept in sync. 9758 */ 9759 static int 9760 nfs4_create_components(char *path, component4 *comp4) 9761 { 9762 int slen, plen, ncomp; 9763 char *ori_path, *nxtc, buf[MAXNAMELEN]; 9764 9765 if (path == NULL) 9766 return (0); 9767 9768 plen = strlen(path) + 1; /* include the terminator */ 9769 ori_path = path; 9770 ncomp = 0; 9771 9772 /* count number of components in the path */ 9773 for (nxtc = path; nxtc < ori_path + plen; nxtc++) { 9774 if (*nxtc == '/' || *nxtc == '\0' || *nxtc == '\n') { 9775 if ((slen = nxtc - path) == 0) { 9776 path = nxtc + 1; 9777 continue; 9778 } 9779 9780 if (comp4 != NULL) { 9781 bcopy(path, buf, slen); 9782 buf[slen] = '\0'; 9783 (void) str_to_utf8(buf, &comp4[ncomp]); 9784 } 9785 9786 ncomp++; /* 1 valid component */ 9787 path = nxtc + 1; 9788 } 9789 if (*nxtc == '\0' || *nxtc == '\n') 9790 break; 9791 } 9792 9793 return (ncomp); 9794 } 9795 9796 /* 9797 * There is a user-level copy of this routine in ref_subr.c. 9798 * Changes should be kept in sync. 9799 */ 9800 static int 9801 make_pathname4(char *path, pathname4 *pathname) 9802 { 9803 int ncomp; 9804 component4 *comp4; 9805 9806 if (pathname == NULL) 9807 return (0); 9808 9809 if (path == NULL) { 9810 pathname->pathname4_val = NULL; 9811 pathname->pathname4_len = 0; 9812 return (0); 9813 } 9814 9815 /* count number of components to alloc buffer */ 9816 if ((ncomp = nfs4_create_components(path, NULL)) == 0) { 9817 pathname->pathname4_val = NULL; 9818 pathname->pathname4_len = 0; 9819 return (0); 9820 } 9821 comp4 = kmem_zalloc(ncomp * sizeof (component4), KM_SLEEP); 9822 9823 /* copy components into allocated buffer */ 9824 ncomp = nfs4_create_components(path, comp4); 9825 9826 pathname->pathname4_val = comp4; 9827 pathname->pathname4_len = ncomp; 9828 9829 return (ncomp); 9830 } 9831 9832 #define xdr_fs_locations4 xdr_fattr4_fs_locations 9833 9834 fs_locations4 * 9835 fetch_referral(vnode_t *vp, cred_t *cr) 9836 { 9837 nvlist_t *nvl; 9838 char *stype, *sdata; 9839 fs_locations4 *result; 9840 char buf[1024]; 9841 size_t bufsize; 9842 XDR xdr; 9843 int err; 9844 9845 /* 9846 * Check attrs to ensure it's a reparse point 9847 */ 9848 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9849 return (NULL); 9850 9851 /* 9852 * Look for an NFS record and get the type and data 9853 */ 9854 if (vn_find_nfs_record(vp, &nvl, &stype, &sdata) != 0) 9855 return (NULL); 9856 9857 /* 9858 * With the type and data, upcall to get the referral 9859 */ 9860 bufsize = sizeof (buf); 9861 bzero(buf, sizeof (buf)); 9862 err = reparse_kderef((const char *)stype, (const char *)sdata, 9863 buf, &bufsize); 9864 reparse_free(nvl); 9865 9866 DTRACE_PROBE4(nfs4serv__func__referral__upcall, 9867 char *, stype, char *, sdata, char *, buf, int, err); 9868 if (err) { 9869 cmn_err(CE_NOTE, 9870 "reparsed daemon not running: unable to get referral (%d)", 9871 err); 9872 return (NULL); 9873 } 9874 9875 /* 9876 * We get an XDR'ed record back from the kderef call 9877 */ 9878 xdrmem_create(&xdr, buf, bufsize, XDR_DECODE); 9879 result = kmem_alloc(sizeof (fs_locations4), KM_SLEEP); 9880 err = xdr_fs_locations4(&xdr, result); 9881 XDR_DESTROY(&xdr); 9882 if (err != TRUE) { 9883 DTRACE_PROBE1(nfs4serv__func__referral__upcall__xdrfail, 9884 int, err); 9885 return (NULL); 9886 } 9887 9888 /* 9889 * Look at path to recover fs_root, ignoring the leading '/' 9890 */ 9891 (void) make_pathname4(vp->v_path, &result->fs_root); 9892 9893 return (result); 9894 } 9895 9896 char * 9897 build_symlink(vnode_t *vp, cred_t *cr, size_t *strsz) 9898 { 9899 fs_locations4 *fsl; 9900 fs_location4 *fs; 9901 char *server, *path, *symbuf; 9902 static char *prefix = "/net/"; 9903 int i, size, npaths; 9904 uint_t len; 9905 9906 /* Get the referral */ 9907 if ((fsl = fetch_referral(vp, cr)) == NULL) 9908 return (NULL); 9909 9910 /* Deal with only the first location and first server */ 9911 fs = &fsl->locations_val[0]; 9912 server = utf8_to_str(&fs->server_val[0], &len, NULL); 9913 if (server == NULL) { 9914 rfs4_free_fs_locations4(fsl); 9915 kmem_free(fsl, sizeof (fs_locations4)); 9916 return (NULL); 9917 } 9918 9919 /* Figure out size for "/net/" + host + /path/path/path + NULL */ 9920 size = strlen(prefix) + len; 9921 for (i = 0; i < fs->rootpath.pathname4_len; i++) 9922 size += fs->rootpath.pathname4_val[i].utf8string_len + 1; 9923 9924 /* Allocate the symlink buffer and fill it */ 9925 symbuf = kmem_zalloc(size, KM_SLEEP); 9926 (void) strcat(symbuf, prefix); 9927 (void) strcat(symbuf, server); 9928 kmem_free(server, len); 9929 9930 npaths = 0; 9931 for (i = 0; i < fs->rootpath.pathname4_len; i++) { 9932 path = utf8_to_str(&fs->rootpath.pathname4_val[i], &len, NULL); 9933 if (path == NULL) 9934 continue; 9935 (void) strcat(symbuf, "/"); 9936 (void) strcat(symbuf, path); 9937 npaths++; 9938 kmem_free(path, len); 9939 } 9940 9941 rfs4_free_fs_locations4(fsl); 9942 kmem_free(fsl, sizeof (fs_locations4)); 9943 9944 if (strsz != NULL) 9945 *strsz = size; 9946 return (symbuf); 9947 } 9948 9949 /* 9950 * Check to see if we have a downrev Solaris client, so that we 9951 * can send it a symlink instead of a referral. 9952 */ 9953 int 9954 client_is_downrev(struct svc_req *req) 9955 { 9956 struct sockaddr *ca; 9957 rfs4_clntip_t *ci; 9958 bool_t create = FALSE; 9959 int is_downrev; 9960 9961 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 9962 ASSERT(ca); 9963 ci = rfs4_find_clntip(ca, &create); 9964 if (ci == NULL) 9965 return (0); 9966 is_downrev = ci->ri_no_referrals; 9967 rfs4_dbe_rele(ci->ri_dbe); 9968 return (is_downrev); 9969 } 9970