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 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright 2012 Nexenta Systems, Inc. All rights reserved. 24 */ 25 26 27 /* 28 * Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. 29 * All Rights Reserved 30 */ 31 32 #include <sys/param.h> 33 #include <sys/types.h> 34 #include <sys/systm.h> 35 #include <sys/cred.h> 36 #include <sys/buf.h> 37 #include <sys/vfs.h> 38 #include <sys/vfs_opreg.h> 39 #include <sys/vnode.h> 40 #include <sys/uio.h> 41 #include <sys/errno.h> 42 #include <sys/sysmacros.h> 43 #include <sys/statvfs.h> 44 #include <sys/kmem.h> 45 #include <sys/dirent.h> 46 #include <sys/cmn_err.h> 47 #include <sys/debug.h> 48 #include <sys/systeminfo.h> 49 #include <sys/flock.h> 50 #include <sys/pathname.h> 51 #include <sys/nbmlock.h> 52 #include <sys/share.h> 53 #include <sys/atomic.h> 54 #include <sys/policy.h> 55 #include <sys/fem.h> 56 #include <sys/sdt.h> 57 #include <sys/ddi.h> 58 #include <sys/zone.h> 59 60 #include <fs/fs_reparse.h> 61 62 #include <rpc/types.h> 63 #include <rpc/auth.h> 64 #include <rpc/rpcsec_gss.h> 65 #include <rpc/svc.h> 66 67 #include <nfs/nfs.h> 68 #include <nfs/export.h> 69 #include <nfs/nfs_cmd.h> 70 #include <nfs/lm.h> 71 #include <nfs/nfs4.h> 72 73 #include <sys/strsubr.h> 74 #include <sys/strsun.h> 75 76 #include <inet/common.h> 77 #include <inet/ip.h> 78 #include <inet/ip6.h> 79 80 #include <sys/tsol/label.h> 81 #include <sys/tsol/tndb.h> 82 83 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ 84 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; 85 #define RFS4_LOCK_DELAY 10 /* Milliseconds */ 86 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; 87 extern struct svc_ops rdma_svc_ops; 88 extern int nfs_loaned_buffers; 89 /* End of Tunables */ 90 91 static int rdma_setup_read_data4(READ4args *, READ4res *); 92 93 /* 94 * Used to bump the stateid4.seqid value and show changes in the stateid 95 */ 96 #define next_stateid(sp) (++(sp)->bits.chgseq) 97 98 /* 99 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 100 * This is used to return NFS4ERR_TOOSMALL when clients specify 101 * maxcount that isn't large enough to hold the smallest possible 102 * XDR encoded dirent. 103 * 104 * sizeof cookie (8 bytes) + 105 * sizeof name_len (4 bytes) + 106 * sizeof smallest (padded) name (4 bytes) + 107 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 108 * sizeof attrlist4_len (4 bytes) + 109 * sizeof next boolean (4 bytes) 110 * 111 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 112 * the smallest possible entry4 (assumes no attrs requested). 113 * sizeof nfsstat4 (4 bytes) + 114 * sizeof verifier4 (8 bytes) + 115 * sizeof entry4list bool (4 bytes) + 116 * sizeof entry4 (36 bytes) + 117 * sizeof eof bool (4 bytes) 118 * 119 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 120 * VOP_READDIR. Its value is the size of the maximum possible dirent 121 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 122 * required for a given name length. MAXNAMELEN is the maximum 123 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 124 * macros are to allow for . and .. entries -- just a minor tweak to try 125 * and guarantee that buffer we give to VOP_READDIR will be large enough 126 * to hold ., .., and the largest possible solaris dirent64. 127 */ 128 #define RFS4_MINLEN_ENTRY4 36 129 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 130 #define RFS4_MINLEN_RDDIR_BUF \ 131 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 132 133 /* 134 * It would be better to pad to 4 bytes since that's what XDR would do, 135 * but the dirents UFS gives us are already padded to 8, so just take 136 * what we're given. Dircount is only a hint anyway. Currently the 137 * solaris kernel is ASCII only, so there's no point in calling the 138 * UTF8 functions. 139 * 140 * dirent64: named padded to provide 8 byte struct alignment 141 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 142 * 143 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 144 * 145 */ 146 #define DIRENT64_TO_DIRCOUNT(dp) \ 147 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 148 149 time_t rfs4_start_time; /* Initialized in rfs4_srvrinit */ 150 151 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 152 153 u_longlong_t nfs4_srv_caller_id; 154 uint_t nfs4_srv_vkey = 0; 155 156 verifier4 Write4verf; 157 verifier4 Readdir4verf; 158 159 void rfs4_init_compound_state(struct compound_state *); 160 161 static void nullfree(caddr_t); 162 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 163 struct compound_state *); 164 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 165 struct compound_state *); 166 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 167 struct compound_state *); 168 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 169 struct compound_state *); 170 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 171 struct compound_state *); 172 static void rfs4_op_create_free(nfs_resop4 *resop); 173 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, 174 struct svc_req *, struct compound_state *); 175 static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *, 176 struct svc_req *, struct compound_state *); 177 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 178 struct compound_state *); 179 static void rfs4_op_getattr_free(nfs_resop4 *); 180 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 181 struct compound_state *); 182 static void rfs4_op_getfh_free(nfs_resop4 *); 183 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 184 struct compound_state *); 185 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 186 struct compound_state *); 187 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 188 struct compound_state *); 189 static void lock_denied_free(nfs_resop4 *); 190 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 191 struct compound_state *); 192 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 193 struct compound_state *); 194 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 195 struct compound_state *); 196 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 197 struct compound_state *); 198 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 199 struct svc_req *req, struct compound_state *cs); 200 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 201 struct compound_state *); 202 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 203 struct compound_state *); 204 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 205 struct svc_req *, struct compound_state *); 206 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 207 struct svc_req *, struct compound_state *); 208 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 209 struct compound_state *); 210 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 211 struct compound_state *); 212 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 213 struct compound_state *); 214 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 215 struct compound_state *); 216 static void rfs4_op_read_free(nfs_resop4 *); 217 static void rfs4_op_readdir_free(nfs_resop4 *resop); 218 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 219 struct compound_state *); 220 static void rfs4_op_readlink_free(nfs_resop4 *); 221 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 222 struct svc_req *, struct compound_state *); 223 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 224 struct compound_state *); 225 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 226 struct compound_state *); 227 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 228 struct compound_state *); 229 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 230 struct compound_state *); 231 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 232 struct compound_state *); 233 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 234 struct compound_state *); 235 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 236 struct compound_state *); 237 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 238 struct compound_state *); 239 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 240 struct svc_req *, struct compound_state *); 241 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 242 struct svc_req *req, struct compound_state *); 243 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 244 struct compound_state *); 245 static void rfs4_op_secinfo_free(nfs_resop4 *); 246 247 static nfsstat4 check_open_access(uint32_t, 248 struct compound_state *, struct svc_req *); 249 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 250 void rfs4_ss_clid(rfs4_client_t *); 251 252 /* 253 * translation table for attrs 254 */ 255 struct nfs4_ntov_table { 256 union nfs4_attr_u *na; 257 uint8_t amap[NFS4_MAXNUM_ATTRS]; 258 int attrcnt; 259 bool_t vfsstat; 260 }; 261 262 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 263 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 264 struct nfs4_svgetit_arg *sargp); 265 266 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 267 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 268 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 269 270 fem_t *deleg_rdops; 271 fem_t *deleg_wrops; 272 273 rfs4_servinst_t *rfs4_cur_servinst = NULL; /* current server instance */ 274 kmutex_t rfs4_servinst_lock; /* protects linked list */ 275 int rfs4_seen_first_compound; /* set first time we see one */ 276 277 /* 278 * NFS4 op dispatch table 279 */ 280 281 struct rfsv4disp { 282 void (*dis_proc)(); /* proc to call */ 283 void (*dis_resfree)(); /* frees space allocated by proc */ 284 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 285 }; 286 287 static struct rfsv4disp rfsv4disptab[] = { 288 /* 289 * NFS VERSION 4 290 */ 291 292 /* RFS_NULL = 0 */ 293 {rfs4_op_illegal, nullfree, 0}, 294 295 /* UNUSED = 1 */ 296 {rfs4_op_illegal, nullfree, 0}, 297 298 /* UNUSED = 2 */ 299 {rfs4_op_illegal, nullfree, 0}, 300 301 /* OP_ACCESS = 3 */ 302 {rfs4_op_access, nullfree, RPC_IDEMPOTENT}, 303 304 /* OP_CLOSE = 4 */ 305 {rfs4_op_close, nullfree, 0}, 306 307 /* OP_COMMIT = 5 */ 308 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT}, 309 310 /* OP_CREATE = 6 */ 311 {rfs4_op_create, nullfree, 0}, 312 313 /* OP_DELEGPURGE = 7 */ 314 {rfs4_op_delegpurge, nullfree, 0}, 315 316 /* OP_DELEGRETURN = 8 */ 317 {rfs4_op_delegreturn, nullfree, 0}, 318 319 /* OP_GETATTR = 9 */ 320 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT}, 321 322 /* OP_GETFH = 10 */ 323 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL}, 324 325 /* OP_LINK = 11 */ 326 {rfs4_op_link, nullfree, 0}, 327 328 /* OP_LOCK = 12 */ 329 {rfs4_op_lock, lock_denied_free, 0}, 330 331 /* OP_LOCKT = 13 */ 332 {rfs4_op_lockt, lock_denied_free, 0}, 333 334 /* OP_LOCKU = 14 */ 335 {rfs4_op_locku, nullfree, 0}, 336 337 /* OP_LOOKUP = 15 */ 338 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 339 340 /* OP_LOOKUPP = 16 */ 341 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 342 343 /* OP_NVERIFY = 17 */ 344 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT}, 345 346 /* OP_OPEN = 18 */ 347 {rfs4_op_open, rfs4_free_reply, 0}, 348 349 /* OP_OPENATTR = 19 */ 350 {rfs4_op_openattr, nullfree, 0}, 351 352 /* OP_OPEN_CONFIRM = 20 */ 353 {rfs4_op_open_confirm, nullfree, 0}, 354 355 /* OP_OPEN_DOWNGRADE = 21 */ 356 {rfs4_op_open_downgrade, nullfree, 0}, 357 358 /* OP_OPEN_PUTFH = 22 */ 359 {rfs4_op_putfh, nullfree, RPC_ALL}, 360 361 /* OP_PUTPUBFH = 23 */ 362 {rfs4_op_putpubfh, nullfree, RPC_ALL}, 363 364 /* OP_PUTROOTFH = 24 */ 365 {rfs4_op_putrootfh, nullfree, RPC_ALL}, 366 367 /* OP_READ = 25 */ 368 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT}, 369 370 /* OP_READDIR = 26 */ 371 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT}, 372 373 /* OP_READLINK = 27 */ 374 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT}, 375 376 /* OP_REMOVE = 28 */ 377 {rfs4_op_remove, nullfree, 0}, 378 379 /* OP_RENAME = 29 */ 380 {rfs4_op_rename, nullfree, 0}, 381 382 /* OP_RENEW = 30 */ 383 {rfs4_op_renew, nullfree, 0}, 384 385 /* OP_RESTOREFH = 31 */ 386 {rfs4_op_restorefh, nullfree, RPC_ALL}, 387 388 /* OP_SAVEFH = 32 */ 389 {rfs4_op_savefh, nullfree, RPC_ALL}, 390 391 /* OP_SECINFO = 33 */ 392 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0}, 393 394 /* OP_SETATTR = 34 */ 395 {rfs4_op_setattr, nullfree, 0}, 396 397 /* OP_SETCLIENTID = 35 */ 398 {rfs4_op_setclientid, nullfree, 0}, 399 400 /* OP_SETCLIENTID_CONFIRM = 36 */ 401 {rfs4_op_setclientid_confirm, nullfree, 0}, 402 403 /* OP_VERIFY = 37 */ 404 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT}, 405 406 /* OP_WRITE = 38 */ 407 {rfs4_op_write, nullfree, 0}, 408 409 /* OP_RELEASE_LOCKOWNER = 39 */ 410 {rfs4_op_release_lockowner, nullfree, 0}, 411 }; 412 413 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 414 415 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 416 417 #ifdef DEBUG 418 419 int rfs4_fillone_debug = 0; 420 int rfs4_no_stub_access = 1; 421 int rfs4_rddir_debug = 0; 422 423 static char *rfs4_op_string[] = { 424 "rfs4_op_null", 425 "rfs4_op_1 unused", 426 "rfs4_op_2 unused", 427 "rfs4_op_access", 428 "rfs4_op_close", 429 "rfs4_op_commit", 430 "rfs4_op_create", 431 "rfs4_op_delegpurge", 432 "rfs4_op_delegreturn", 433 "rfs4_op_getattr", 434 "rfs4_op_getfh", 435 "rfs4_op_link", 436 "rfs4_op_lock", 437 "rfs4_op_lockt", 438 "rfs4_op_locku", 439 "rfs4_op_lookup", 440 "rfs4_op_lookupp", 441 "rfs4_op_nverify", 442 "rfs4_op_open", 443 "rfs4_op_openattr", 444 "rfs4_op_open_confirm", 445 "rfs4_op_open_downgrade", 446 "rfs4_op_putfh", 447 "rfs4_op_putpubfh", 448 "rfs4_op_putrootfh", 449 "rfs4_op_read", 450 "rfs4_op_readdir", 451 "rfs4_op_readlink", 452 "rfs4_op_remove", 453 "rfs4_op_rename", 454 "rfs4_op_renew", 455 "rfs4_op_restorefh", 456 "rfs4_op_savefh", 457 "rfs4_op_secinfo", 458 "rfs4_op_setattr", 459 "rfs4_op_setclientid", 460 "rfs4_op_setclient_confirm", 461 "rfs4_op_verify", 462 "rfs4_op_write", 463 "rfs4_op_release_lockowner", 464 "rfs4_op_illegal" 465 }; 466 #endif 467 468 void rfs4_ss_chkclid(rfs4_client_t *); 469 470 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 471 472 extern void rfs4_free_fs_locations4(fs_locations4 *); 473 474 #ifdef nextdp 475 #undef nextdp 476 #endif 477 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 478 479 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 480 VOPNAME_OPEN, { .femop_open = deleg_rd_open }, 481 VOPNAME_WRITE, { .femop_write = deleg_rd_write }, 482 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, 483 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 484 VOPNAME_SPACE, { .femop_space = deleg_rd_space }, 485 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, 486 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, 487 NULL, NULL 488 }; 489 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 490 VOPNAME_OPEN, { .femop_open = deleg_wr_open }, 491 VOPNAME_READ, { .femop_read = deleg_wr_read }, 492 VOPNAME_WRITE, { .femop_write = deleg_wr_write }, 493 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, 494 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 495 VOPNAME_SPACE, { .femop_space = deleg_wr_space }, 496 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, 497 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, 498 NULL, NULL 499 }; 500 501 int 502 rfs4_srvrinit(void) 503 { 504 timespec32_t verf; 505 int error; 506 extern void rfs4_attr_init(); 507 extern krwlock_t rfs4_deleg_policy_lock; 508 509 /* 510 * The following algorithm attempts to find a unique verifier 511 * to be used as the write verifier returned from the server 512 * to the client. It is important that this verifier change 513 * whenever the server reboots. Of secondary importance, it 514 * is important for the verifier to be unique between two 515 * different servers. 516 * 517 * Thus, an attempt is made to use the system hostid and the 518 * current time in seconds when the nfssrv kernel module is 519 * loaded. It is assumed that an NFS server will not be able 520 * to boot and then to reboot in less than a second. If the 521 * hostid has not been set, then the current high resolution 522 * time is used. This will ensure different verifiers each 523 * time the server reboots and minimize the chances that two 524 * different servers will have the same verifier. 525 * XXX - this is broken on LP64 kernels. 526 */ 527 verf.tv_sec = (time_t)zone_get_hostid(NULL); 528 if (verf.tv_sec != 0) { 529 verf.tv_nsec = gethrestime_sec(); 530 } else { 531 timespec_t tverf; 532 533 gethrestime(&tverf); 534 verf.tv_sec = (time_t)tverf.tv_sec; 535 verf.tv_nsec = tverf.tv_nsec; 536 } 537 538 Write4verf = *(uint64_t *)&verf; 539 540 rfs4_attr_init(); 541 mutex_init(&rfs4_deleg_lock, NULL, MUTEX_DEFAULT, NULL); 542 543 /* Used to manage create/destroy of server state */ 544 mutex_init(&rfs4_state_lock, NULL, MUTEX_DEFAULT, NULL); 545 546 /* Used to manage access to server instance linked list */ 547 mutex_init(&rfs4_servinst_lock, NULL, MUTEX_DEFAULT, NULL); 548 549 /* Used to manage access to rfs4_deleg_policy */ 550 rw_init(&rfs4_deleg_policy_lock, NULL, RW_DEFAULT, NULL); 551 552 error = fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops); 553 if (error != 0) { 554 rfs4_disable_delegation(); 555 } else { 556 error = fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 557 &deleg_wrops); 558 if (error != 0) { 559 rfs4_disable_delegation(); 560 fem_free(deleg_rdops); 561 } 562 } 563 564 nfs4_srv_caller_id = fs_new_caller_id(); 565 566 lockt_sysid = lm_alloc_sysidt(); 567 568 vsd_create(&nfs4_srv_vkey, NULL); 569 570 return (0); 571 } 572 573 void 574 rfs4_srvrfini(void) 575 { 576 extern krwlock_t rfs4_deleg_policy_lock; 577 578 if (lockt_sysid != LM_NOSYSID) { 579 lm_free_sysidt(lockt_sysid); 580 lockt_sysid = LM_NOSYSID; 581 } 582 583 mutex_destroy(&rfs4_deleg_lock); 584 mutex_destroy(&rfs4_state_lock); 585 rw_destroy(&rfs4_deleg_policy_lock); 586 587 fem_free(deleg_rdops); 588 fem_free(deleg_wrops); 589 } 590 591 void 592 rfs4_init_compound_state(struct compound_state *cs) 593 { 594 bzero(cs, sizeof (*cs)); 595 cs->cont = TRUE; 596 cs->access = CS_ACCESS_DENIED; 597 cs->deleg = FALSE; 598 cs->mandlock = FALSE; 599 cs->fh.nfs_fh4_val = cs->fhbuf; 600 } 601 602 void 603 rfs4_grace_start(rfs4_servinst_t *sip) 604 { 605 rw_enter(&sip->rwlock, RW_WRITER); 606 sip->start_time = (time_t)TICK_TO_SEC(ddi_get_lbolt()); 607 sip->grace_period = rfs4_grace_period; 608 rw_exit(&sip->rwlock); 609 } 610 611 /* 612 * returns true if the instance's grace period has never been started 613 */ 614 int 615 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 616 { 617 time_t start_time; 618 619 rw_enter(&sip->rwlock, RW_READER); 620 start_time = sip->start_time; 621 rw_exit(&sip->rwlock); 622 623 return (start_time == 0); 624 } 625 626 /* 627 * Indicates if server instance is within the 628 * grace period. 629 */ 630 int 631 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 632 { 633 time_t grace_expiry; 634 635 rw_enter(&sip->rwlock, RW_READER); 636 grace_expiry = sip->start_time + sip->grace_period; 637 rw_exit(&sip->rwlock); 638 639 return (((time_t)TICK_TO_SEC(ddi_get_lbolt())) < grace_expiry); 640 } 641 642 int 643 rfs4_clnt_in_grace(rfs4_client_t *cp) 644 { 645 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 646 647 return (rfs4_servinst_in_grace(cp->rc_server_instance)); 648 } 649 650 /* 651 * reset all currently active grace periods 652 */ 653 void 654 rfs4_grace_reset_all(void) 655 { 656 rfs4_servinst_t *sip; 657 658 mutex_enter(&rfs4_servinst_lock); 659 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 660 if (rfs4_servinst_in_grace(sip)) 661 rfs4_grace_start(sip); 662 mutex_exit(&rfs4_servinst_lock); 663 } 664 665 /* 666 * start any new instances' grace periods 667 */ 668 void 669 rfs4_grace_start_new(void) 670 { 671 rfs4_servinst_t *sip; 672 673 mutex_enter(&rfs4_servinst_lock); 674 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 675 if (rfs4_servinst_grace_new(sip)) 676 rfs4_grace_start(sip); 677 mutex_exit(&rfs4_servinst_lock); 678 } 679 680 static rfs4_dss_path_t * 681 rfs4_dss_newpath(rfs4_servinst_t *sip, char *path, unsigned index) 682 { 683 size_t len; 684 rfs4_dss_path_t *dss_path; 685 686 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 687 688 /* 689 * Take a copy of the string, since the original may be overwritten. 690 * Sadly, no strdup() in the kernel. 691 */ 692 /* allow for NUL */ 693 len = strlen(path) + 1; 694 dss_path->path = kmem_alloc(len, KM_SLEEP); 695 (void) strlcpy(dss_path->path, path, len); 696 697 /* associate with servinst */ 698 dss_path->sip = sip; 699 dss_path->index = index; 700 701 /* 702 * Add to list of served paths. 703 * No locking required, as we're only ever called at startup. 704 */ 705 if (rfs4_dss_pathlist == NULL) { 706 /* this is the first dss_path_t */ 707 708 /* needed for insque/remque */ 709 dss_path->next = dss_path->prev = dss_path; 710 711 rfs4_dss_pathlist = dss_path; 712 } else { 713 insque(dss_path, rfs4_dss_pathlist); 714 } 715 716 return (dss_path); 717 } 718 719 /* 720 * Create a new server instance, and make it the currently active instance. 721 * Note that starting the grace period too early will reduce the clients' 722 * recovery window. 723 */ 724 void 725 rfs4_servinst_create(int start_grace, int dss_npaths, char **dss_paths) 726 { 727 unsigned i; 728 rfs4_servinst_t *sip; 729 rfs4_oldstate_t *oldstate; 730 731 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 732 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 733 734 sip->start_time = (time_t)0; 735 sip->grace_period = (time_t)0; 736 sip->next = NULL; 737 sip->prev = NULL; 738 739 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 740 /* 741 * This initial dummy entry is required to setup for insque/remque. 742 * It must be skipped over whenever the list is traversed. 743 */ 744 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 745 /* insque/remque require initial list entry to be self-terminated */ 746 oldstate->next = oldstate; 747 oldstate->prev = oldstate; 748 sip->oldstate = oldstate; 749 750 751 sip->dss_npaths = dss_npaths; 752 sip->dss_paths = kmem_alloc(dss_npaths * 753 sizeof (rfs4_dss_path_t *), KM_SLEEP); 754 755 for (i = 0; i < dss_npaths; i++) { 756 sip->dss_paths[i] = rfs4_dss_newpath(sip, dss_paths[i], i); 757 } 758 759 mutex_enter(&rfs4_servinst_lock); 760 if (rfs4_cur_servinst != NULL) { 761 /* add to linked list */ 762 sip->prev = rfs4_cur_servinst; 763 rfs4_cur_servinst->next = sip; 764 } 765 if (start_grace) 766 rfs4_grace_start(sip); 767 /* make the new instance "current" */ 768 rfs4_cur_servinst = sip; 769 770 mutex_exit(&rfs4_servinst_lock); 771 } 772 773 /* 774 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 775 * all instances directly. 776 */ 777 void 778 rfs4_servinst_destroy_all(void) 779 { 780 rfs4_servinst_t *sip, *prev, *current; 781 #ifdef DEBUG 782 int n = 0; 783 #endif 784 785 mutex_enter(&rfs4_servinst_lock); 786 ASSERT(rfs4_cur_servinst != NULL); 787 current = rfs4_cur_servinst; 788 rfs4_cur_servinst = NULL; 789 for (sip = current; sip != NULL; sip = prev) { 790 prev = sip->prev; 791 rw_destroy(&sip->rwlock); 792 if (sip->oldstate) 793 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 794 if (sip->dss_paths) 795 kmem_free(sip->dss_paths, 796 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 797 kmem_free(sip, sizeof (rfs4_servinst_t)); 798 #ifdef DEBUG 799 n++; 800 #endif 801 } 802 mutex_exit(&rfs4_servinst_lock); 803 } 804 805 /* 806 * Assign the current server instance to a client_t. 807 * Should be called with cp->rc_dbe held. 808 */ 809 void 810 rfs4_servinst_assign(rfs4_client_t *cp, rfs4_servinst_t *sip) 811 { 812 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 813 814 /* 815 * The lock ensures that if the current instance is in the process 816 * of changing, we will see the new one. 817 */ 818 mutex_enter(&rfs4_servinst_lock); 819 cp->rc_server_instance = sip; 820 mutex_exit(&rfs4_servinst_lock); 821 } 822 823 rfs4_servinst_t * 824 rfs4_servinst(rfs4_client_t *cp) 825 { 826 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 827 828 return (cp->rc_server_instance); 829 } 830 831 /* ARGSUSED */ 832 static void 833 nullfree(caddr_t resop) 834 { 835 } 836 837 /* 838 * This is a fall-through for invalid or not implemented (yet) ops 839 */ 840 /* ARGSUSED */ 841 static void 842 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 843 struct compound_state *cs) 844 { 845 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 846 } 847 848 /* 849 * Check if the security flavor, nfsnum, is in the flavor_list. 850 */ 851 bool_t 852 in_flavor_list(int nfsnum, int *flavor_list, int count) 853 { 854 int i; 855 856 for (i = 0; i < count; i++) { 857 if (nfsnum == flavor_list[i]) 858 return (TRUE); 859 } 860 return (FALSE); 861 } 862 863 /* 864 * Used by rfs4_op_secinfo to get the security information from the 865 * export structure associated with the component. 866 */ 867 /* ARGSUSED */ 868 static nfsstat4 869 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 870 { 871 int error, different_export = 0; 872 vnode_t *dvp, *vp, *tvp; 873 struct exportinfo *exi = NULL; 874 fid_t fid; 875 uint_t count, i; 876 secinfo4 *resok_val; 877 struct secinfo *secp; 878 seconfig_t *si; 879 bool_t did_traverse = FALSE; 880 int dotdot, walk; 881 882 dvp = cs->vp; 883 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 884 885 /* 886 * If dotdotting, then need to check whether it's above the 887 * root of a filesystem, or above an export point. 888 */ 889 if (dotdot) { 890 891 /* 892 * If dotdotting at the root of a filesystem, then 893 * need to traverse back to the mounted-on filesystem 894 * and do the dotdot lookup there. 895 */ 896 if (cs->vp->v_flag & VROOT) { 897 898 /* 899 * If at the system root, then can 900 * go up no further. 901 */ 902 if (VN_CMP(dvp, rootdir)) 903 return (puterrno4(ENOENT)); 904 905 /* 906 * Traverse back to the mounted-on filesystem 907 */ 908 dvp = untraverse(cs->vp); 909 910 /* 911 * Set the different_export flag so we remember 912 * to pick up a new exportinfo entry for 913 * this new filesystem. 914 */ 915 different_export = 1; 916 } else { 917 918 /* 919 * If dotdotting above an export point then set 920 * the different_export to get new export info. 921 */ 922 different_export = nfs_exported(cs->exi, cs->vp); 923 } 924 } 925 926 /* 927 * Get the vnode for the component "nm". 928 */ 929 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 930 NULL, NULL, NULL); 931 if (error) 932 return (puterrno4(error)); 933 934 /* 935 * If the vnode is in a pseudo filesystem, or if the security flavor 936 * used in the request is valid but not an explicitly shared flavor, 937 * or the access bit indicates that this is a limited access, 938 * check whether this vnode is visible. 939 */ 940 if (!different_export && 941 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 942 cs->access & CS_ACCESS_LIMITED)) { 943 if (! nfs_visible(cs->exi, vp, &different_export)) { 944 VN_RELE(vp); 945 return (puterrno4(ENOENT)); 946 } 947 } 948 949 /* 950 * If it's a mountpoint, then traverse it. 951 */ 952 if (vn_ismntpt(vp)) { 953 tvp = vp; 954 if ((error = traverse(&tvp)) != 0) { 955 VN_RELE(vp); 956 return (puterrno4(error)); 957 } 958 /* remember that we had to traverse mountpoint */ 959 did_traverse = TRUE; 960 vp = tvp; 961 different_export = 1; 962 } else if (vp->v_vfsp != dvp->v_vfsp) { 963 /* 964 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 965 * then vp is probably an LOFS object. We don't need the 966 * realvp, we just need to know that we might have crossed 967 * a server fs boundary and need to call checkexport4. 968 * (LOFS lookup hides server fs mountpoints, and actually calls 969 * traverse) 970 */ 971 different_export = 1; 972 } 973 974 /* 975 * Get the export information for it. 976 */ 977 if (different_export) { 978 979 bzero(&fid, sizeof (fid)); 980 fid.fid_len = MAXFIDSZ; 981 error = vop_fid_pseudo(vp, &fid); 982 if (error) { 983 VN_RELE(vp); 984 return (puterrno4(error)); 985 } 986 987 if (dotdot) 988 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 989 else 990 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 991 992 if (exi == NULL) { 993 if (did_traverse == TRUE) { 994 /* 995 * If this vnode is a mounted-on vnode, 996 * but the mounted-on file system is not 997 * exported, send back the secinfo for 998 * the exported node that the mounted-on 999 * vnode lives in. 1000 */ 1001 exi = cs->exi; 1002 } else { 1003 VN_RELE(vp); 1004 return (puterrno4(EACCES)); 1005 } 1006 } 1007 } else { 1008 exi = cs->exi; 1009 } 1010 ASSERT(exi != NULL); 1011 1012 1013 /* 1014 * Create the secinfo result based on the security information 1015 * from the exportinfo structure (exi). 1016 * 1017 * Return all flavors for a pseudo node. 1018 * For a real export node, return the flavor that the client 1019 * has access with. 1020 */ 1021 ASSERT(RW_LOCK_HELD(&exported_lock)); 1022 if (PSEUDO(exi)) { 1023 count = exi->exi_export.ex_seccnt; /* total sec count */ 1024 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1025 secp = exi->exi_export.ex_secinfo; 1026 1027 for (i = 0; i < count; i++) { 1028 si = &secp[i].s_secinfo; 1029 resok_val[i].flavor = si->sc_rpcnum; 1030 if (resok_val[i].flavor == RPCSEC_GSS) { 1031 rpcsec_gss_info *info; 1032 1033 info = &resok_val[i].flavor_info; 1034 info->qop = si->sc_qop; 1035 info->service = (rpc_gss_svc_t)si->sc_service; 1036 1037 /* get oid opaque data */ 1038 info->oid.sec_oid4_len = 1039 si->sc_gss_mech_type->length; 1040 info->oid.sec_oid4_val = kmem_alloc( 1041 si->sc_gss_mech_type->length, KM_SLEEP); 1042 bcopy( 1043 si->sc_gss_mech_type->elements, 1044 info->oid.sec_oid4_val, 1045 info->oid.sec_oid4_len); 1046 } 1047 } 1048 resp->SECINFO4resok_len = count; 1049 resp->SECINFO4resok_val = resok_val; 1050 } else { 1051 int ret_cnt = 0, k = 0; 1052 int *flavor_list; 1053 1054 count = exi->exi_export.ex_seccnt; /* total sec count */ 1055 secp = exi->exi_export.ex_secinfo; 1056 1057 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1058 /* find out which flavors to return */ 1059 for (i = 0; i < count; i ++) { 1060 int access, flavor, perm; 1061 1062 flavor = secp[i].s_secinfo.sc_nfsnum; 1063 perm = secp[i].s_flags; 1064 1065 access = nfsauth4_secinfo_access(exi, cs->req, 1066 flavor, perm); 1067 1068 if (! (access & NFSAUTH_DENIED) && 1069 ! (access & NFSAUTH_WRONGSEC)) { 1070 flavor_list[ret_cnt] = flavor; 1071 ret_cnt++; 1072 } 1073 } 1074 1075 /* Create the returning SECINFO value */ 1076 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1077 1078 for (i = 0; i < count; i++) { 1079 /* 1080 * If the flavor is in the flavor list, 1081 * fill in resok_val. 1082 */ 1083 si = &secp[i].s_secinfo; 1084 if (in_flavor_list(si->sc_nfsnum, 1085 flavor_list, ret_cnt)) { 1086 resok_val[k].flavor = si->sc_rpcnum; 1087 if (resok_val[k].flavor == RPCSEC_GSS) { 1088 rpcsec_gss_info *info; 1089 1090 info = &resok_val[k].flavor_info; 1091 info->qop = si->sc_qop; 1092 info->service = (rpc_gss_svc_t) 1093 si->sc_service; 1094 1095 /* get oid opaque data */ 1096 info->oid.sec_oid4_len = 1097 si->sc_gss_mech_type->length; 1098 info->oid.sec_oid4_val = kmem_alloc( 1099 si->sc_gss_mech_type->length, 1100 KM_SLEEP); 1101 bcopy(si->sc_gss_mech_type->elements, 1102 info->oid.sec_oid4_val, 1103 info->oid.sec_oid4_len); 1104 } 1105 k++; 1106 } 1107 if (k >= ret_cnt) 1108 break; 1109 } 1110 resp->SECINFO4resok_len = ret_cnt; 1111 resp->SECINFO4resok_val = resok_val; 1112 kmem_free(flavor_list, count * sizeof (int)); 1113 } 1114 1115 VN_RELE(vp); 1116 return (NFS4_OK); 1117 } 1118 1119 /* 1120 * SECINFO (Operation 33): Obtain required security information on 1121 * the component name in the format of (security-mechanism-oid, qop, service) 1122 * triplets. 1123 */ 1124 /* ARGSUSED */ 1125 static void 1126 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1127 struct compound_state *cs) 1128 { 1129 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; 1130 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1131 utf8string *utfnm = &args->name; 1132 uint_t len; 1133 char *nm; 1134 struct sockaddr *ca; 1135 char *name = NULL; 1136 nfsstat4 status = NFS4_OK; 1137 1138 DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs, 1139 SECINFO4args *, args); 1140 1141 /* 1142 * Current file handle (cfh) should have been set before getting 1143 * into this function. If not, return error. 1144 */ 1145 if (cs->vp == NULL) { 1146 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1147 goto out; 1148 } 1149 1150 if (cs->vp->v_type != VDIR) { 1151 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1152 goto out; 1153 } 1154 1155 /* 1156 * Verify the component name. If failed, error out, but 1157 * do not error out if the component name is a "..". 1158 * SECINFO will return its parents secinfo data for SECINFO "..". 1159 */ 1160 status = utf8_dir_verify(utfnm); 1161 if (status != NFS4_OK) { 1162 if (utfnm->utf8string_len != 2 || 1163 utfnm->utf8string_val[0] != '.' || 1164 utfnm->utf8string_val[1] != '.') { 1165 *cs->statusp = resp->status = status; 1166 goto out; 1167 } 1168 } 1169 1170 nm = utf8_to_str(utfnm, &len, NULL); 1171 if (nm == NULL) { 1172 *cs->statusp = resp->status = NFS4ERR_INVAL; 1173 goto out; 1174 } 1175 1176 if (len > MAXNAMELEN) { 1177 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1178 kmem_free(nm, len); 1179 goto out; 1180 } 1181 1182 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1183 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1184 MAXPATHLEN + 1); 1185 1186 if (name == NULL) { 1187 *cs->statusp = resp->status = NFS4ERR_INVAL; 1188 kmem_free(nm, len); 1189 goto out; 1190 } 1191 1192 1193 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp); 1194 1195 if (name != nm) 1196 kmem_free(name, MAXPATHLEN + 1); 1197 kmem_free(nm, len); 1198 1199 out: 1200 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, 1201 SECINFO4res *, resp); 1202 } 1203 1204 /* 1205 * Free SECINFO result. 1206 */ 1207 /* ARGSUSED */ 1208 static void 1209 rfs4_op_secinfo_free(nfs_resop4 *resop) 1210 { 1211 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1212 int count, i; 1213 secinfo4 *resok_val; 1214 1215 /* If this is not an Ok result, nothing to free. */ 1216 if (resp->status != NFS4_OK) { 1217 return; 1218 } 1219 1220 count = resp->SECINFO4resok_len; 1221 resok_val = resp->SECINFO4resok_val; 1222 1223 for (i = 0; i < count; i++) { 1224 if (resok_val[i].flavor == RPCSEC_GSS) { 1225 rpcsec_gss_info *info; 1226 1227 info = &resok_val[i].flavor_info; 1228 kmem_free(info->oid.sec_oid4_val, 1229 info->oid.sec_oid4_len); 1230 } 1231 } 1232 kmem_free(resok_val, count * sizeof (secinfo4)); 1233 resp->SECINFO4resok_len = 0; 1234 resp->SECINFO4resok_val = NULL; 1235 } 1236 1237 /* ARGSUSED */ 1238 static void 1239 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1240 struct compound_state *cs) 1241 { 1242 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1243 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1244 int error; 1245 vnode_t *vp; 1246 struct vattr va; 1247 int checkwriteperm; 1248 cred_t *cr = cs->cr; 1249 bslabel_t *clabel, *slabel; 1250 ts_label_t *tslabel; 1251 boolean_t admin_low_client; 1252 1253 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, 1254 ACCESS4args *, args); 1255 1256 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1257 if (cs->access == CS_ACCESS_DENIED) { 1258 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1259 goto out; 1260 } 1261 #endif 1262 if (cs->vp == NULL) { 1263 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1264 goto out; 1265 } 1266 1267 ASSERT(cr != NULL); 1268 1269 vp = cs->vp; 1270 1271 /* 1272 * If the file system is exported read only, it is not appropriate 1273 * to check write permissions for regular files and directories. 1274 * Special files are interpreted by the client, so the underlying 1275 * permissions are sent back to the client for interpretation. 1276 */ 1277 if (rdonly4(cs->exi, cs->vp, req) && 1278 (vp->v_type == VREG || vp->v_type == VDIR)) 1279 checkwriteperm = 0; 1280 else 1281 checkwriteperm = 1; 1282 1283 /* 1284 * XXX 1285 * We need the mode so that we can correctly determine access 1286 * permissions relative to a mandatory lock file. Access to 1287 * mandatory lock files is denied on the server, so it might 1288 * as well be reflected to the server during the open. 1289 */ 1290 va.va_mask = AT_MODE; 1291 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1292 if (error) { 1293 *cs->statusp = resp->status = puterrno4(error); 1294 goto out; 1295 } 1296 resp->access = 0; 1297 resp->supported = 0; 1298 1299 if (is_system_labeled()) { 1300 ASSERT(req->rq_label != NULL); 1301 clabel = req->rq_label; 1302 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1303 "got client label from request(1)", 1304 struct svc_req *, req); 1305 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1306 if ((tslabel = nfs_getflabel(vp, cs->exi)) == NULL) { 1307 *cs->statusp = resp->status = puterrno4(EACCES); 1308 goto out; 1309 } 1310 slabel = label2bslabel(tslabel); 1311 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1312 char *, "got server label(1) for vp(2)", 1313 bslabel_t *, slabel, vnode_t *, vp); 1314 1315 admin_low_client = B_FALSE; 1316 } else 1317 admin_low_client = B_TRUE; 1318 } 1319 1320 if (args->access & ACCESS4_READ) { 1321 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); 1322 if (!error && !MANDLOCK(vp, va.va_mode) && 1323 (!is_system_labeled() || admin_low_client || 1324 bldominates(clabel, slabel))) 1325 resp->access |= ACCESS4_READ; 1326 resp->supported |= ACCESS4_READ; 1327 } 1328 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1329 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1330 if (!error && (!is_system_labeled() || admin_low_client || 1331 bldominates(clabel, slabel))) 1332 resp->access |= ACCESS4_LOOKUP; 1333 resp->supported |= ACCESS4_LOOKUP; 1334 } 1335 if (checkwriteperm && 1336 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1337 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1338 if (!error && !MANDLOCK(vp, va.va_mode) && 1339 (!is_system_labeled() || admin_low_client || 1340 blequal(clabel, slabel))) 1341 resp->access |= 1342 (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND)); 1343 resp->supported |= 1344 resp->access & (ACCESS4_MODIFY | ACCESS4_EXTEND); 1345 } 1346 1347 if (checkwriteperm && 1348 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1349 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1350 if (!error && (!is_system_labeled() || admin_low_client || 1351 blequal(clabel, slabel))) 1352 resp->access |= ACCESS4_DELETE; 1353 resp->supported |= ACCESS4_DELETE; 1354 } 1355 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1356 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1357 if (!error && !MANDLOCK(vp, va.va_mode) && 1358 (!is_system_labeled() || admin_low_client || 1359 bldominates(clabel, slabel))) 1360 resp->access |= ACCESS4_EXECUTE; 1361 resp->supported |= ACCESS4_EXECUTE; 1362 } 1363 1364 if (is_system_labeled() && !admin_low_client) 1365 label_rele(tslabel); 1366 1367 *cs->statusp = resp->status = NFS4_OK; 1368 out: 1369 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1370 ACCESS4res *, resp); 1371 } 1372 1373 /* ARGSUSED */ 1374 static void 1375 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1376 struct compound_state *cs) 1377 { 1378 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1379 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1380 int error; 1381 vnode_t *vp = cs->vp; 1382 cred_t *cr = cs->cr; 1383 vattr_t va; 1384 1385 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1386 COMMIT4args *, args); 1387 1388 if (vp == NULL) { 1389 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1390 goto out; 1391 } 1392 if (cs->access == CS_ACCESS_DENIED) { 1393 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1394 goto out; 1395 } 1396 1397 if (args->offset + args->count < args->offset) { 1398 *cs->statusp = resp->status = NFS4ERR_INVAL; 1399 goto out; 1400 } 1401 1402 va.va_mask = AT_UID; 1403 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1404 1405 /* 1406 * If we can't get the attributes, then we can't do the 1407 * right access checking. So, we'll fail the request. 1408 */ 1409 if (error) { 1410 *cs->statusp = resp->status = puterrno4(error); 1411 goto out; 1412 } 1413 if (rdonly4(cs->exi, cs->vp, req)) { 1414 *cs->statusp = resp->status = NFS4ERR_ROFS; 1415 goto out; 1416 } 1417 1418 if (vp->v_type != VREG) { 1419 if (vp->v_type == VDIR) 1420 resp->status = NFS4ERR_ISDIR; 1421 else 1422 resp->status = NFS4ERR_INVAL; 1423 *cs->statusp = resp->status; 1424 goto out; 1425 } 1426 1427 if (crgetuid(cr) != va.va_uid && 1428 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1429 *cs->statusp = resp->status = puterrno4(error); 1430 goto out; 1431 } 1432 1433 error = VOP_FSYNC(vp, FSYNC, cr, NULL); 1434 1435 if (error) { 1436 *cs->statusp = resp->status = puterrno4(error); 1437 goto out; 1438 } 1439 1440 *cs->statusp = resp->status = NFS4_OK; 1441 resp->writeverf = Write4verf; 1442 out: 1443 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1444 COMMIT4res *, resp); 1445 } 1446 1447 /* 1448 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1449 * was completed. It does the nfsv4 create for special files. 1450 */ 1451 /* ARGSUSED */ 1452 static vnode_t * 1453 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1454 struct compound_state *cs, vattr_t *vap, char *nm) 1455 { 1456 int error; 1457 cred_t *cr = cs->cr; 1458 vnode_t *dvp = cs->vp; 1459 vnode_t *vp = NULL; 1460 int mode; 1461 enum vcexcl excl; 1462 1463 switch (args->type) { 1464 case NF4CHR: 1465 case NF4BLK: 1466 if (secpolicy_sys_devices(cr) != 0) { 1467 *cs->statusp = resp->status = NFS4ERR_PERM; 1468 return (NULL); 1469 } 1470 if (args->type == NF4CHR) 1471 vap->va_type = VCHR; 1472 else 1473 vap->va_type = VBLK; 1474 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1475 args->ftype4_u.devdata.specdata2); 1476 vap->va_mask |= AT_RDEV; 1477 break; 1478 case NF4SOCK: 1479 vap->va_type = VSOCK; 1480 break; 1481 case NF4FIFO: 1482 vap->va_type = VFIFO; 1483 break; 1484 default: 1485 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1486 return (NULL); 1487 } 1488 1489 /* 1490 * Must specify the mode. 1491 */ 1492 if (!(vap->va_mask & AT_MODE)) { 1493 *cs->statusp = resp->status = NFS4ERR_INVAL; 1494 return (NULL); 1495 } 1496 1497 excl = EXCL; 1498 1499 mode = 0; 1500 1501 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1502 if (error) { 1503 *cs->statusp = resp->status = puterrno4(error); 1504 return (NULL); 1505 } 1506 return (vp); 1507 } 1508 1509 /* 1510 * nfsv4 create is used to create non-regular files. For regular files, 1511 * use nfsv4 open. 1512 */ 1513 /* ARGSUSED */ 1514 static void 1515 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1516 struct compound_state *cs) 1517 { 1518 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1519 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1520 int error; 1521 struct vattr bva, iva, iva2, ava, *vap; 1522 cred_t *cr = cs->cr; 1523 vnode_t *dvp = cs->vp; 1524 vnode_t *vp = NULL; 1525 vnode_t *realvp; 1526 char *nm, *lnm; 1527 uint_t len, llen; 1528 int syncval = 0; 1529 struct nfs4_svgetit_arg sarg; 1530 struct nfs4_ntov_table ntov; 1531 struct statvfs64 sb; 1532 nfsstat4 status; 1533 struct sockaddr *ca; 1534 char *name = NULL; 1535 char *lname = NULL; 1536 1537 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1538 CREATE4args *, args); 1539 1540 resp->attrset = 0; 1541 1542 if (dvp == NULL) { 1543 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1544 goto out; 1545 } 1546 1547 /* 1548 * If there is an unshared filesystem mounted on this vnode, 1549 * do not allow to create an object in this directory. 1550 */ 1551 if (vn_ismntpt(dvp)) { 1552 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1553 goto out; 1554 } 1555 1556 /* Verify that type is correct */ 1557 switch (args->type) { 1558 case NF4LNK: 1559 case NF4BLK: 1560 case NF4CHR: 1561 case NF4SOCK: 1562 case NF4FIFO: 1563 case NF4DIR: 1564 break; 1565 default: 1566 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1567 goto out; 1568 }; 1569 1570 if (cs->access == CS_ACCESS_DENIED) { 1571 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1572 goto out; 1573 } 1574 if (dvp->v_type != VDIR) { 1575 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1576 goto out; 1577 } 1578 status = utf8_dir_verify(&args->objname); 1579 if (status != NFS4_OK) { 1580 *cs->statusp = resp->status = status; 1581 goto out; 1582 } 1583 1584 if (rdonly4(cs->exi, cs->vp, req)) { 1585 *cs->statusp = resp->status = NFS4ERR_ROFS; 1586 goto out; 1587 } 1588 1589 /* 1590 * Name of newly created object 1591 */ 1592 nm = utf8_to_fn(&args->objname, &len, NULL); 1593 if (nm == NULL) { 1594 *cs->statusp = resp->status = NFS4ERR_INVAL; 1595 goto out; 1596 } 1597 1598 if (len > MAXNAMELEN) { 1599 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1600 kmem_free(nm, len); 1601 goto out; 1602 } 1603 1604 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1605 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1606 MAXPATHLEN + 1); 1607 1608 if (name == NULL) { 1609 *cs->statusp = resp->status = NFS4ERR_INVAL; 1610 kmem_free(nm, len); 1611 goto out; 1612 } 1613 1614 resp->attrset = 0; 1615 1616 sarg.sbp = &sb; 1617 sarg.is_referral = B_FALSE; 1618 nfs4_ntov_table_init(&ntov); 1619 1620 status = do_rfs4_set_attrs(&resp->attrset, 1621 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1622 1623 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1624 status = NFS4ERR_INVAL; 1625 1626 if (status != NFS4_OK) { 1627 *cs->statusp = resp->status = status; 1628 if (name != nm) 1629 kmem_free(name, MAXPATHLEN + 1); 1630 kmem_free(nm, len); 1631 nfs4_ntov_table_free(&ntov, &sarg); 1632 resp->attrset = 0; 1633 goto out; 1634 } 1635 1636 /* Get "before" change value */ 1637 bva.va_mask = AT_CTIME|AT_SEQ|AT_MODE; 1638 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1639 if (error) { 1640 *cs->statusp = resp->status = puterrno4(error); 1641 if (name != nm) 1642 kmem_free(name, MAXPATHLEN + 1); 1643 kmem_free(nm, len); 1644 nfs4_ntov_table_free(&ntov, &sarg); 1645 resp->attrset = 0; 1646 goto out; 1647 } 1648 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1649 1650 vap = sarg.vap; 1651 1652 /* 1653 * Set the default initial values for attributes when the parent 1654 * directory does not have the VSUID/VSGID bit set and they have 1655 * not been specified in createattrs. 1656 */ 1657 if (!(bva.va_mode & VSUID) && (vap->va_mask & AT_UID) == 0) { 1658 vap->va_uid = crgetuid(cr); 1659 vap->va_mask |= AT_UID; 1660 } 1661 if (!(bva.va_mode & VSGID) && (vap->va_mask & AT_GID) == 0) { 1662 vap->va_gid = crgetgid(cr); 1663 vap->va_mask |= AT_GID; 1664 } 1665 1666 vap->va_mask |= AT_TYPE; 1667 switch (args->type) { 1668 case NF4DIR: 1669 vap->va_type = VDIR; 1670 if ((vap->va_mask & AT_MODE) == 0) { 1671 vap->va_mode = 0700; /* default: owner rwx only */ 1672 vap->va_mask |= AT_MODE; 1673 } 1674 error = VOP_MKDIR(dvp, name, vap, &vp, cr, NULL, 0, NULL); 1675 if (error) 1676 break; 1677 1678 /* 1679 * Get the initial "after" sequence number, if it fails, 1680 * set to zero 1681 */ 1682 iva.va_mask = AT_SEQ; 1683 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1684 iva.va_seq = 0; 1685 break; 1686 case NF4LNK: 1687 vap->va_type = VLNK; 1688 if ((vap->va_mask & AT_MODE) == 0) { 1689 vap->va_mode = 0700; /* default: owner rwx only */ 1690 vap->va_mask |= AT_MODE; 1691 } 1692 1693 /* 1694 * symlink names must be treated as data 1695 */ 1696 lnm = utf8_to_str(&args->ftype4_u.linkdata, &llen, NULL); 1697 1698 if (lnm == NULL) { 1699 *cs->statusp = resp->status = NFS4ERR_INVAL; 1700 if (name != nm) 1701 kmem_free(name, MAXPATHLEN + 1); 1702 kmem_free(nm, len); 1703 nfs4_ntov_table_free(&ntov, &sarg); 1704 resp->attrset = 0; 1705 goto out; 1706 } 1707 1708 if (llen > MAXPATHLEN) { 1709 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1710 if (name != nm) 1711 kmem_free(name, MAXPATHLEN + 1); 1712 kmem_free(nm, len); 1713 kmem_free(lnm, llen); 1714 nfs4_ntov_table_free(&ntov, &sarg); 1715 resp->attrset = 0; 1716 goto out; 1717 } 1718 1719 lname = nfscmd_convname(ca, cs->exi, lnm, 1720 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); 1721 1722 if (lname == NULL) { 1723 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 1724 if (name != nm) 1725 kmem_free(name, MAXPATHLEN + 1); 1726 kmem_free(nm, len); 1727 kmem_free(lnm, llen); 1728 nfs4_ntov_table_free(&ntov, &sarg); 1729 resp->attrset = 0; 1730 goto out; 1731 } 1732 1733 error = VOP_SYMLINK(dvp, name, vap, lname, cr, NULL, 0); 1734 if (lname != lnm) 1735 kmem_free(lname, MAXPATHLEN + 1); 1736 kmem_free(lnm, llen); 1737 if (error) 1738 break; 1739 1740 /* 1741 * Get the initial "after" sequence number, if it fails, 1742 * set to zero 1743 */ 1744 iva.va_mask = AT_SEQ; 1745 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1746 iva.va_seq = 0; 1747 1748 error = VOP_LOOKUP(dvp, name, &vp, NULL, 0, NULL, cr, 1749 NULL, NULL, NULL); 1750 if (error) 1751 break; 1752 1753 /* 1754 * va_seq is not safe over VOP calls, check it again 1755 * if it has changed zero out iva to force atomic = FALSE. 1756 */ 1757 iva2.va_mask = AT_SEQ; 1758 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 1759 iva2.va_seq != iva.va_seq) 1760 iva.va_seq = 0; 1761 break; 1762 default: 1763 /* 1764 * probably a special file. 1765 */ 1766 if ((vap->va_mask & AT_MODE) == 0) { 1767 vap->va_mode = 0600; /* default: owner rw only */ 1768 vap->va_mask |= AT_MODE; 1769 } 1770 syncval = FNODSYNC; 1771 /* 1772 * We know this will only generate one VOP call 1773 */ 1774 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, name); 1775 1776 if (vp == NULL) { 1777 if (name != nm) 1778 kmem_free(name, MAXPATHLEN + 1); 1779 kmem_free(nm, len); 1780 nfs4_ntov_table_free(&ntov, &sarg); 1781 resp->attrset = 0; 1782 goto out; 1783 } 1784 1785 /* 1786 * Get the initial "after" sequence number, if it fails, 1787 * set to zero 1788 */ 1789 iva.va_mask = AT_SEQ; 1790 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1791 iva.va_seq = 0; 1792 1793 break; 1794 } 1795 if (name != nm) 1796 kmem_free(name, MAXPATHLEN + 1); 1797 kmem_free(nm, len); 1798 1799 if (error) { 1800 *cs->statusp = resp->status = puterrno4(error); 1801 } 1802 1803 /* 1804 * Force modified data and metadata out to stable storage. 1805 */ 1806 (void) VOP_FSYNC(dvp, 0, cr, NULL); 1807 1808 if (resp->status != NFS4_OK) { 1809 if (vp != NULL) 1810 VN_RELE(vp); 1811 nfs4_ntov_table_free(&ntov, &sarg); 1812 resp->attrset = 0; 1813 goto out; 1814 } 1815 1816 /* 1817 * Finish setup of cinfo response, "before" value already set. 1818 * Get "after" change value, if it fails, simply return the 1819 * before value. 1820 */ 1821 ava.va_mask = AT_CTIME|AT_SEQ; 1822 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 1823 ava.va_ctime = bva.va_ctime; 1824 ava.va_seq = 0; 1825 } 1826 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1827 1828 /* 1829 * True verification that object was created with correct 1830 * attrs is impossible. The attrs could have been changed 1831 * immediately after object creation. If attributes did 1832 * not verify, the only recourse for the server is to 1833 * destroy the object. Maybe if some attrs (like gid) 1834 * are set incorrectly, the object should be destroyed; 1835 * however, seems bad as a default policy. Do we really 1836 * want to destroy an object over one of the times not 1837 * verifying correctly? For these reasons, the server 1838 * currently sets bits in attrset for createattrs 1839 * that were set; however, no verification is done. 1840 * 1841 * vmask_to_nmask accounts for vattr bits set on create 1842 * [do_rfs4_set_attrs() only sets resp bits for 1843 * non-vattr/vfs bits.] 1844 * Mask off any bits set by default so as not to return 1845 * more attrset bits than were requested in createattrs 1846 */ 1847 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1848 resp->attrset &= args->createattrs.attrmask; 1849 nfs4_ntov_table_free(&ntov, &sarg); 1850 1851 error = makefh4(&cs->fh, vp, cs->exi); 1852 if (error) { 1853 *cs->statusp = resp->status = puterrno4(error); 1854 } 1855 1856 /* 1857 * The cinfo.atomic = TRUE only if we got no errors, we have 1858 * non-zero va_seq's, and it has incremented by exactly one 1859 * during the creation and it didn't change during the VOP_LOOKUP 1860 * or VOP_FSYNC. 1861 */ 1862 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1863 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 1864 resp->cinfo.atomic = TRUE; 1865 else 1866 resp->cinfo.atomic = FALSE; 1867 1868 /* 1869 * Force modified metadata out to stable storage. 1870 * 1871 * if a underlying vp exists, pass it to VOP_FSYNC 1872 */ 1873 if (VOP_REALVP(vp, &realvp, NULL) == 0) 1874 (void) VOP_FSYNC(realvp, syncval, cr, NULL); 1875 else 1876 (void) VOP_FSYNC(vp, syncval, cr, NULL); 1877 1878 if (resp->status != NFS4_OK) { 1879 VN_RELE(vp); 1880 goto out; 1881 } 1882 if (cs->vp) 1883 VN_RELE(cs->vp); 1884 1885 cs->vp = vp; 1886 *cs->statusp = resp->status = NFS4_OK; 1887 out: 1888 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 1889 CREATE4res *, resp); 1890 } 1891 1892 /*ARGSUSED*/ 1893 static void 1894 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1895 struct compound_state *cs) 1896 { 1897 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 1898 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 1899 1900 rfs4_op_inval(argop, resop, req, cs); 1901 1902 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 1903 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 1904 } 1905 1906 /*ARGSUSED*/ 1907 static void 1908 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1909 struct compound_state *cs) 1910 { 1911 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 1912 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 1913 rfs4_deleg_state_t *dsp; 1914 nfsstat4 status; 1915 1916 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 1917 DELEGRETURN4args *, args); 1918 1919 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 1920 resp->status = *cs->statusp = status; 1921 if (status != NFS4_OK) 1922 goto out; 1923 1924 /* Ensure specified filehandle matches */ 1925 if (cs->vp != dsp->rds_finfo->rf_vp) { 1926 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 1927 } else 1928 rfs4_return_deleg(dsp, FALSE); 1929 1930 rfs4_update_lease(dsp->rds_client); 1931 1932 rfs4_deleg_state_rele(dsp); 1933 out: 1934 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 1935 DELEGRETURN4res *, resp); 1936 } 1937 1938 /* 1939 * Check to see if a given "flavor" is an explicitly shared flavor. 1940 * The assumption of this routine is the "flavor" is already a valid 1941 * flavor in the secinfo list of "exi". 1942 * 1943 * e.g. 1944 * # share -o sec=flavor1 /export 1945 * # share -o sec=flavor2 /export/home 1946 * 1947 * flavor2 is not an explicitly shared flavor for /export, 1948 * however it is in the secinfo list for /export thru the 1949 * server namespace setup. 1950 */ 1951 int 1952 is_exported_sec(int flavor, struct exportinfo *exi) 1953 { 1954 int i; 1955 struct secinfo *sp; 1956 1957 sp = exi->exi_export.ex_secinfo; 1958 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 1959 if (flavor == sp[i].s_secinfo.sc_nfsnum || 1960 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 1961 return (SEC_REF_EXPORTED(&sp[i])); 1962 } 1963 } 1964 1965 /* Should not reach this point based on the assumption */ 1966 return (0); 1967 } 1968 1969 /* 1970 * Check if the security flavor used in the request matches what is 1971 * required at the export point or at the root pseudo node (exi_root). 1972 * 1973 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 1974 * 1975 */ 1976 static int 1977 secinfo_match_or_authnone(struct compound_state *cs) 1978 { 1979 int i; 1980 struct secinfo *sp; 1981 1982 /* 1983 * Check cs->nfsflavor (from the request) against 1984 * the current export data in cs->exi. 1985 */ 1986 sp = cs->exi->exi_export.ex_secinfo; 1987 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 1988 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 1989 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 1990 return (1); 1991 } 1992 1993 return (0); 1994 } 1995 1996 /* 1997 * Check the access authority for the client and return the correct error. 1998 */ 1999 nfsstat4 2000 call_checkauth4(struct compound_state *cs, struct svc_req *req) 2001 { 2002 int authres; 2003 2004 /* 2005 * First, check if the security flavor used in the request 2006 * are among the flavors set in the server namespace. 2007 */ 2008 if (!secinfo_match_or_authnone(cs)) { 2009 *cs->statusp = NFS4ERR_WRONGSEC; 2010 return (*cs->statusp); 2011 } 2012 2013 authres = checkauth4(cs, req); 2014 2015 if (authres > 0) { 2016 *cs->statusp = NFS4_OK; 2017 if (! (cs->access & CS_ACCESS_LIMITED)) 2018 cs->access = CS_ACCESS_OK; 2019 } else if (authres == 0) { 2020 *cs->statusp = NFS4ERR_ACCESS; 2021 } else if (authres == -2) { 2022 *cs->statusp = NFS4ERR_WRONGSEC; 2023 } else { 2024 *cs->statusp = NFS4ERR_DELAY; 2025 } 2026 return (*cs->statusp); 2027 } 2028 2029 /* 2030 * bitmap4_to_attrmask is called by getattr and readdir. 2031 * It sets up the vattr mask and determines whether vfsstat call is needed 2032 * based on the input bitmap. 2033 * Returns nfsv4 status. 2034 */ 2035 static nfsstat4 2036 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 2037 { 2038 int i; 2039 uint_t va_mask; 2040 struct statvfs64 *sbp = sargp->sbp; 2041 2042 sargp->sbp = NULL; 2043 sargp->flag = 0; 2044 sargp->rdattr_error = NFS4_OK; 2045 sargp->mntdfid_set = FALSE; 2046 if (sargp->cs->vp) 2047 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 2048 FH4_ATTRDIR | FH4_NAMEDATTR); 2049 else 2050 sargp->xattr = 0; 2051 2052 /* 2053 * Set rdattr_error_req to true if return error per 2054 * failed entry rather than fail the readdir. 2055 */ 2056 if (breq & FATTR4_RDATTR_ERROR_MASK) 2057 sargp->rdattr_error_req = 1; 2058 else 2059 sargp->rdattr_error_req = 0; 2060 2061 /* 2062 * generate the va_mask 2063 * Handle the easy cases first 2064 */ 2065 switch (breq) { 2066 case NFS4_NTOV_ATTR_MASK: 2067 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 2068 return (NFS4_OK); 2069 2070 case NFS4_FS_ATTR_MASK: 2071 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2072 sargp->sbp = sbp; 2073 return (NFS4_OK); 2074 2075 case NFS4_NTOV_ATTR_CACHE_MASK: 2076 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2077 return (NFS4_OK); 2078 2079 case FATTR4_LEASE_TIME_MASK: 2080 sargp->vap->va_mask = 0; 2081 return (NFS4_OK); 2082 2083 default: 2084 va_mask = 0; 2085 for (i = 0; i < nfs4_ntov_map_size; i++) { 2086 if ((breq & nfs4_ntov_map[i].fbit) && 2087 nfs4_ntov_map[i].vbit) 2088 va_mask |= nfs4_ntov_map[i].vbit; 2089 } 2090 2091 /* 2092 * Check is vfsstat is needed 2093 */ 2094 if (breq & NFS4_FS_ATTR_MASK) 2095 sargp->sbp = sbp; 2096 2097 sargp->vap->va_mask = va_mask; 2098 return (NFS4_OK); 2099 } 2100 /* NOTREACHED */ 2101 } 2102 2103 /* 2104 * bitmap4_get_sysattrs is called by getattr and readdir. 2105 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2106 * Returns nfsv4 status. 2107 */ 2108 static nfsstat4 2109 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2110 { 2111 int error; 2112 struct compound_state *cs = sargp->cs; 2113 vnode_t *vp = cs->vp; 2114 2115 if (sargp->sbp != NULL) { 2116 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2117 sargp->sbp = NULL; /* to identify error */ 2118 return (puterrno4(error)); 2119 } 2120 } 2121 2122 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2123 } 2124 2125 static void 2126 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2127 { 2128 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2129 KM_SLEEP); 2130 ntovp->attrcnt = 0; 2131 ntovp->vfsstat = FALSE; 2132 } 2133 2134 static void 2135 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2136 struct nfs4_svgetit_arg *sargp) 2137 { 2138 int i; 2139 union nfs4_attr_u *na; 2140 uint8_t *amap; 2141 2142 /* 2143 * XXX Should do the same checks for whether the bit is set 2144 */ 2145 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2146 i < ntovp->attrcnt; i++, na++, amap++) { 2147 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2148 NFS4ATTR_FREEIT, sargp, na); 2149 } 2150 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2151 /* 2152 * xdr_free for getattr will be done later 2153 */ 2154 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2155 i < ntovp->attrcnt; i++, na++, amap++) { 2156 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2157 } 2158 } 2159 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2160 } 2161 2162 /* 2163 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2164 */ 2165 static nfsstat4 2166 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2167 struct nfs4_svgetit_arg *sargp) 2168 { 2169 int error = 0; 2170 int i, k; 2171 struct nfs4_ntov_table ntov; 2172 XDR xdr; 2173 ulong_t xdr_size; 2174 char *xdr_attrs; 2175 nfsstat4 status = NFS4_OK; 2176 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2177 union nfs4_attr_u *na; 2178 uint8_t *amap; 2179 2180 sargp->op = NFS4ATTR_GETIT; 2181 sargp->flag = 0; 2182 2183 fattrp->attrmask = 0; 2184 /* if no bits requested, then return empty fattr4 */ 2185 if (breq == 0) { 2186 fattrp->attrlist4_len = 0; 2187 fattrp->attrlist4 = NULL; 2188 return (NFS4_OK); 2189 } 2190 2191 /* 2192 * return NFS4ERR_INVAL when client requests write-only attrs 2193 */ 2194 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2195 return (NFS4ERR_INVAL); 2196 2197 nfs4_ntov_table_init(&ntov); 2198 na = ntov.na; 2199 amap = ntov.amap; 2200 2201 /* 2202 * Now loop to get or verify the attrs 2203 */ 2204 for (i = 0; i < nfs4_ntov_map_size; i++) { 2205 if (breq & nfs4_ntov_map[i].fbit) { 2206 if ((*nfs4_ntov_map[i].sv_getit)( 2207 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2208 2209 error = (*nfs4_ntov_map[i].sv_getit)( 2210 NFS4ATTR_GETIT, sargp, na); 2211 2212 /* 2213 * Possible error values: 2214 * >0 if sv_getit failed to 2215 * get the attr; 0 if succeeded; 2216 * <0 if rdattr_error and the 2217 * attribute cannot be returned. 2218 */ 2219 if (error && !(sargp->rdattr_error_req)) 2220 goto done; 2221 /* 2222 * If error then just for entry 2223 */ 2224 if (error == 0) { 2225 fattrp->attrmask |= 2226 nfs4_ntov_map[i].fbit; 2227 *amap++ = 2228 (uint8_t)nfs4_ntov_map[i].nval; 2229 na++; 2230 (ntov.attrcnt)++; 2231 } else if ((error > 0) && 2232 (sargp->rdattr_error == NFS4_OK)) { 2233 sargp->rdattr_error = puterrno4(error); 2234 } 2235 error = 0; 2236 } 2237 } 2238 } 2239 2240 /* 2241 * If rdattr_error was set after the return value for it was assigned, 2242 * update it. 2243 */ 2244 if (prev_rdattr_error != sargp->rdattr_error) { 2245 na = ntov.na; 2246 amap = ntov.amap; 2247 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2248 k = *amap; 2249 if (k < FATTR4_RDATTR_ERROR) { 2250 continue; 2251 } 2252 if ((k == FATTR4_RDATTR_ERROR) && 2253 ((*nfs4_ntov_map[k].sv_getit)( 2254 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2255 2256 (void) (*nfs4_ntov_map[k].sv_getit)( 2257 NFS4ATTR_GETIT, sargp, na); 2258 } 2259 break; 2260 } 2261 } 2262 2263 xdr_size = 0; 2264 na = ntov.na; 2265 amap = ntov.amap; 2266 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2267 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2268 } 2269 2270 fattrp->attrlist4_len = xdr_size; 2271 if (xdr_size) { 2272 /* freed by rfs4_op_getattr_free() */ 2273 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2274 2275 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2276 2277 na = ntov.na; 2278 amap = ntov.amap; 2279 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2280 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2281 DTRACE_PROBE1(nfss__e__getattr4_encfail, 2282 int, *amap); 2283 status = NFS4ERR_SERVERFAULT; 2284 break; 2285 } 2286 } 2287 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2288 } else { 2289 fattrp->attrlist4 = NULL; 2290 } 2291 done: 2292 2293 nfs4_ntov_table_free(&ntov, sargp); 2294 2295 if (error != 0) 2296 status = puterrno4(error); 2297 2298 return (status); 2299 } 2300 2301 /* ARGSUSED */ 2302 static void 2303 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2304 struct compound_state *cs) 2305 { 2306 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2307 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2308 struct nfs4_svgetit_arg sarg; 2309 struct statvfs64 sb; 2310 nfsstat4 status; 2311 2312 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2313 GETATTR4args *, args); 2314 2315 if (cs->vp == NULL) { 2316 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2317 goto out; 2318 } 2319 2320 if (cs->access == CS_ACCESS_DENIED) { 2321 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2322 goto out; 2323 } 2324 2325 sarg.sbp = &sb; 2326 sarg.cs = cs; 2327 sarg.is_referral = B_FALSE; 2328 2329 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2330 if (status == NFS4_OK) { 2331 2332 status = bitmap4_get_sysattrs(&sarg); 2333 if (status == NFS4_OK) { 2334 2335 /* Is this a referral? */ 2336 if (vn_is_nfs_reparse(cs->vp, cs->cr)) { 2337 /* Older V4 Solaris client sees a link */ 2338 if (client_is_downrev(req)) 2339 sarg.vap->va_type = VLNK; 2340 else 2341 sarg.is_referral = B_TRUE; 2342 } 2343 2344 status = do_rfs4_op_getattr(args->attr_request, 2345 &resp->obj_attributes, &sarg); 2346 } 2347 } 2348 *cs->statusp = resp->status = status; 2349 out: 2350 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2351 GETATTR4res *, resp); 2352 } 2353 2354 static void 2355 rfs4_op_getattr_free(nfs_resop4 *resop) 2356 { 2357 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2358 2359 nfs4_fattr4_free(&resp->obj_attributes); 2360 } 2361 2362 /* ARGSUSED */ 2363 static void 2364 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2365 struct compound_state *cs) 2366 { 2367 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2368 2369 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2370 2371 if (cs->vp == NULL) { 2372 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2373 goto out; 2374 } 2375 if (cs->access == CS_ACCESS_DENIED) { 2376 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2377 goto out; 2378 } 2379 2380 /* check for reparse point at the share point */ 2381 if (cs->exi->exi_moved || vn_is_nfs_reparse(cs->exi->exi_vp, cs->cr)) { 2382 /* it's all bad */ 2383 cs->exi->exi_moved = 1; 2384 *cs->statusp = resp->status = NFS4ERR_MOVED; 2385 DTRACE_PROBE2(nfs4serv__func__referral__shared__moved, 2386 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2387 return; 2388 } 2389 2390 /* check for reparse point at vp */ 2391 if (vn_is_nfs_reparse(cs->vp, cs->cr) && !client_is_downrev(req)) { 2392 /* it's not all bad */ 2393 *cs->statusp = resp->status = NFS4ERR_MOVED; 2394 DTRACE_PROBE2(nfs4serv__func__referral__moved, 2395 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2396 return; 2397 } 2398 2399 resp->object.nfs_fh4_val = 2400 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2401 nfs_fh4_copy(&cs->fh, &resp->object); 2402 *cs->statusp = resp->status = NFS4_OK; 2403 out: 2404 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2405 GETFH4res *, resp); 2406 } 2407 2408 static void 2409 rfs4_op_getfh_free(nfs_resop4 *resop) 2410 { 2411 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2412 2413 if (resp->status == NFS4_OK && 2414 resp->object.nfs_fh4_val != NULL) { 2415 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2416 resp->object.nfs_fh4_val = NULL; 2417 resp->object.nfs_fh4_len = 0; 2418 } 2419 } 2420 2421 /* 2422 * illegal: args: void 2423 * res : status (NFS4ERR_OP_ILLEGAL) 2424 */ 2425 /* ARGSUSED */ 2426 static void 2427 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2428 struct svc_req *req, struct compound_state *cs) 2429 { 2430 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2431 2432 resop->resop = OP_ILLEGAL; 2433 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2434 } 2435 2436 /* 2437 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2438 * res: status. If success - CURRENT_FH unchanged, return change_info 2439 */ 2440 /* ARGSUSED */ 2441 static void 2442 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2443 struct compound_state *cs) 2444 { 2445 LINK4args *args = &argop->nfs_argop4_u.oplink; 2446 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2447 int error; 2448 vnode_t *vp; 2449 vnode_t *dvp; 2450 struct vattr bdva, idva, adva; 2451 char *nm; 2452 uint_t len; 2453 struct sockaddr *ca; 2454 char *name = NULL; 2455 nfsstat4 status; 2456 2457 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2458 LINK4args *, args); 2459 2460 /* SAVED_FH: source object */ 2461 vp = cs->saved_vp; 2462 if (vp == NULL) { 2463 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2464 goto out; 2465 } 2466 2467 /* CURRENT_FH: target directory */ 2468 dvp = cs->vp; 2469 if (dvp == NULL) { 2470 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2471 goto out; 2472 } 2473 2474 /* 2475 * If there is a non-shared filesystem mounted on this vnode, 2476 * do not allow to link any file in this directory. 2477 */ 2478 if (vn_ismntpt(dvp)) { 2479 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2480 goto out; 2481 } 2482 2483 if (cs->access == CS_ACCESS_DENIED) { 2484 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2485 goto out; 2486 } 2487 2488 /* Check source object's type validity */ 2489 if (vp->v_type == VDIR) { 2490 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2491 goto out; 2492 } 2493 2494 /* Check target directory's type */ 2495 if (dvp->v_type != VDIR) { 2496 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2497 goto out; 2498 } 2499 2500 if (cs->saved_exi != cs->exi) { 2501 *cs->statusp = resp->status = NFS4ERR_XDEV; 2502 goto out; 2503 } 2504 2505 status = utf8_dir_verify(&args->newname); 2506 if (status != NFS4_OK) { 2507 *cs->statusp = resp->status = status; 2508 goto out; 2509 } 2510 2511 nm = utf8_to_fn(&args->newname, &len, NULL); 2512 if (nm == NULL) { 2513 *cs->statusp = resp->status = NFS4ERR_INVAL; 2514 goto out; 2515 } 2516 2517 if (len > MAXNAMELEN) { 2518 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2519 kmem_free(nm, len); 2520 goto out; 2521 } 2522 2523 if (rdonly4(cs->exi, cs->vp, req)) { 2524 *cs->statusp = resp->status = NFS4ERR_ROFS; 2525 kmem_free(nm, len); 2526 goto out; 2527 } 2528 2529 /* Get "before" change value */ 2530 bdva.va_mask = AT_CTIME|AT_SEQ; 2531 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2532 if (error) { 2533 *cs->statusp = resp->status = puterrno4(error); 2534 kmem_free(nm, len); 2535 goto out; 2536 } 2537 2538 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2539 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2540 MAXPATHLEN + 1); 2541 2542 if (name == NULL) { 2543 *cs->statusp = resp->status = NFS4ERR_INVAL; 2544 kmem_free(nm, len); 2545 goto out; 2546 } 2547 2548 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2549 2550 error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0); 2551 2552 if (nm != name) 2553 kmem_free(name, MAXPATHLEN + 1); 2554 kmem_free(nm, len); 2555 2556 /* 2557 * Get the initial "after" sequence number, if it fails, set to zero 2558 */ 2559 idva.va_mask = AT_SEQ; 2560 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2561 idva.va_seq = 0; 2562 2563 /* 2564 * Force modified data and metadata out to stable storage. 2565 */ 2566 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2567 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2568 2569 if (error) { 2570 *cs->statusp = resp->status = puterrno4(error); 2571 goto out; 2572 } 2573 2574 /* 2575 * Get "after" change value, if it fails, simply return the 2576 * before value. 2577 */ 2578 adva.va_mask = AT_CTIME|AT_SEQ; 2579 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2580 adva.va_ctime = bdva.va_ctime; 2581 adva.va_seq = 0; 2582 } 2583 2584 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2585 2586 /* 2587 * The cinfo.atomic = TRUE only if we have 2588 * non-zero va_seq's, and it has incremented by exactly one 2589 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2590 */ 2591 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2592 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2593 resp->cinfo.atomic = TRUE; 2594 else 2595 resp->cinfo.atomic = FALSE; 2596 2597 *cs->statusp = resp->status = NFS4_OK; 2598 out: 2599 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2600 LINK4res *, resp); 2601 } 2602 2603 /* 2604 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2605 */ 2606 2607 /* ARGSUSED */ 2608 static nfsstat4 2609 do_rfs4_op_lookup(char *nm, struct svc_req *req, struct compound_state *cs) 2610 { 2611 int error; 2612 int different_export = 0; 2613 vnode_t *vp, *tvp, *pre_tvp = NULL, *oldvp = NULL; 2614 struct exportinfo *exi = NULL, *pre_exi = NULL; 2615 nfsstat4 stat; 2616 fid_t fid; 2617 int attrdir, dotdot, walk; 2618 bool_t is_newvp = FALSE; 2619 2620 if (cs->vp->v_flag & V_XATTRDIR) { 2621 attrdir = 1; 2622 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2623 } else { 2624 attrdir = 0; 2625 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2626 } 2627 2628 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2629 2630 /* 2631 * If dotdotting, then need to check whether it's 2632 * above the root of a filesystem, or above an 2633 * export point. 2634 */ 2635 if (dotdot) { 2636 2637 /* 2638 * If dotdotting at the root of a filesystem, then 2639 * need to traverse back to the mounted-on filesystem 2640 * and do the dotdot lookup there. 2641 */ 2642 if (cs->vp->v_flag & VROOT) { 2643 2644 /* 2645 * If at the system root, then can 2646 * go up no further. 2647 */ 2648 if (VN_CMP(cs->vp, rootdir)) 2649 return (puterrno4(ENOENT)); 2650 2651 /* 2652 * Traverse back to the mounted-on filesystem 2653 */ 2654 cs->vp = untraverse(cs->vp); 2655 2656 /* 2657 * Set the different_export flag so we remember 2658 * to pick up a new exportinfo entry for 2659 * this new filesystem. 2660 */ 2661 different_export = 1; 2662 } else { 2663 2664 /* 2665 * If dotdotting above an export point then set 2666 * the different_export to get new export info. 2667 */ 2668 different_export = nfs_exported(cs->exi, cs->vp); 2669 } 2670 } 2671 2672 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2673 NULL, NULL, NULL); 2674 if (error) 2675 return (puterrno4(error)); 2676 2677 /* 2678 * If the vnode is in a pseudo filesystem, check whether it is visible. 2679 * 2680 * XXX if the vnode is a symlink and it is not visible in 2681 * a pseudo filesystem, return ENOENT (not following symlink). 2682 * V4 client can not mount such symlink. This is a regression 2683 * from V2/V3. 2684 * 2685 * In the same exported filesystem, if the security flavor used 2686 * is not an explicitly shared flavor, limit the view to the visible 2687 * list entries only. This is not a WRONGSEC case because it's already 2688 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2689 */ 2690 if (!different_export && 2691 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2692 cs->access & CS_ACCESS_LIMITED)) { 2693 if (! nfs_visible(cs->exi, vp, &different_export)) { 2694 VN_RELE(vp); 2695 return (puterrno4(ENOENT)); 2696 } 2697 } 2698 2699 /* 2700 * If it's a mountpoint, then traverse it. 2701 */ 2702 if (vn_ismntpt(vp)) { 2703 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2704 pre_tvp = vp; /* save pre-traversed vnode */ 2705 2706 /* 2707 * hold pre_tvp to counteract rele by traverse. We will 2708 * need pre_tvp below if checkexport4 fails 2709 */ 2710 VN_HOLD(pre_tvp); 2711 tvp = vp; 2712 if ((error = traverse(&tvp)) != 0) { 2713 VN_RELE(vp); 2714 VN_RELE(pre_tvp); 2715 return (puterrno4(error)); 2716 } 2717 vp = tvp; 2718 different_export = 1; 2719 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2720 /* 2721 * The vfsp comparison is to handle the case where 2722 * a LOFS mount is shared. lo_lookup traverses mount points, 2723 * and NFS is unaware of local fs transistions because 2724 * v_vfsmountedhere isn't set. For this special LOFS case, 2725 * the dir and the obj returned by lookup will have different 2726 * vfs ptrs. 2727 */ 2728 different_export = 1; 2729 } 2730 2731 if (different_export) { 2732 2733 bzero(&fid, sizeof (fid)); 2734 fid.fid_len = MAXFIDSZ; 2735 error = vop_fid_pseudo(vp, &fid); 2736 if (error) { 2737 VN_RELE(vp); 2738 if (pre_tvp) 2739 VN_RELE(pre_tvp); 2740 return (puterrno4(error)); 2741 } 2742 2743 if (dotdot) 2744 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2745 else 2746 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2747 2748 if (exi == NULL) { 2749 if (pre_tvp) { 2750 /* 2751 * If this vnode is a mounted-on vnode, 2752 * but the mounted-on file system is not 2753 * exported, send back the filehandle for 2754 * the mounted-on vnode, not the root of 2755 * the mounted-on file system. 2756 */ 2757 VN_RELE(vp); 2758 vp = pre_tvp; 2759 exi = pre_exi; 2760 } else { 2761 VN_RELE(vp); 2762 return (puterrno4(EACCES)); 2763 } 2764 } else if (pre_tvp) { 2765 /* we're done with pre_tvp now. release extra hold */ 2766 VN_RELE(pre_tvp); 2767 } 2768 2769 cs->exi = exi; 2770 2771 /* 2772 * Now we do a checkauth4. The reason is that 2773 * this client/user may not have access to the new 2774 * exported file system, and if he does, 2775 * the client/user may be mapped to a different uid. 2776 * 2777 * We start with a new cr, because the checkauth4 done 2778 * in the PUT*FH operation over wrote the cred's uid, 2779 * gid, etc, and we want the real thing before calling 2780 * checkauth4() 2781 */ 2782 crfree(cs->cr); 2783 cs->cr = crdup(cs->basecr); 2784 2785 oldvp = cs->vp; 2786 cs->vp = vp; 2787 is_newvp = TRUE; 2788 2789 stat = call_checkauth4(cs, req); 2790 if (stat != NFS4_OK) { 2791 VN_RELE(cs->vp); 2792 cs->vp = oldvp; 2793 return (stat); 2794 } 2795 } 2796 2797 /* 2798 * After various NFS checks, do a label check on the path 2799 * component. The label on this path should either be the 2800 * global zone's label or a zone's label. We are only 2801 * interested in the zone's label because exported files 2802 * in global zone is accessible (though read-only) to 2803 * clients. The exportability/visibility check is already 2804 * done before reaching this code. 2805 */ 2806 if (is_system_labeled()) { 2807 bslabel_t *clabel; 2808 2809 ASSERT(req->rq_label != NULL); 2810 clabel = req->rq_label; 2811 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2812 "got client label from request(1)", struct svc_req *, req); 2813 2814 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2815 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 2816 cs->exi)) { 2817 error = EACCES; 2818 goto err_out; 2819 } 2820 } else { 2821 /* 2822 * We grant access to admin_low label clients 2823 * only if the client is trusted, i.e. also 2824 * running Solaris Trusted Extension. 2825 */ 2826 struct sockaddr *ca; 2827 int addr_type; 2828 void *ipaddr; 2829 tsol_tpc_t *tp; 2830 2831 ca = (struct sockaddr *)svc_getrpccaller( 2832 req->rq_xprt)->buf; 2833 if (ca->sa_family == AF_INET) { 2834 addr_type = IPV4_VERSION; 2835 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2836 } else if (ca->sa_family == AF_INET6) { 2837 addr_type = IPV6_VERSION; 2838 ipaddr = &((struct sockaddr_in6 *) 2839 ca)->sin6_addr; 2840 } 2841 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2842 if (tp == NULL || tp->tpc_tp.tp_doi != 2843 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2844 SUN_CIPSO) { 2845 if (tp != NULL) 2846 TPC_RELE(tp); 2847 error = EACCES; 2848 goto err_out; 2849 } 2850 TPC_RELE(tp); 2851 } 2852 } 2853 2854 error = makefh4(&cs->fh, vp, cs->exi); 2855 2856 err_out: 2857 if (error) { 2858 if (is_newvp) { 2859 VN_RELE(cs->vp); 2860 cs->vp = oldvp; 2861 } else 2862 VN_RELE(vp); 2863 return (puterrno4(error)); 2864 } 2865 2866 if (!is_newvp) { 2867 if (cs->vp) 2868 VN_RELE(cs->vp); 2869 cs->vp = vp; 2870 } else if (oldvp) 2871 VN_RELE(oldvp); 2872 2873 /* 2874 * if did lookup on attrdir and didn't lookup .., set named 2875 * attr fh flag 2876 */ 2877 if (attrdir && ! dotdot) 2878 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2879 2880 /* Assume false for now, open proc will set this */ 2881 cs->mandlock = FALSE; 2882 2883 return (NFS4_OK); 2884 } 2885 2886 /* ARGSUSED */ 2887 static void 2888 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2889 struct compound_state *cs) 2890 { 2891 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2892 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2893 char *nm; 2894 uint_t len; 2895 struct sockaddr *ca; 2896 char *name = NULL; 2897 nfsstat4 status; 2898 2899 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2900 LOOKUP4args *, args); 2901 2902 if (cs->vp == NULL) { 2903 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2904 goto out; 2905 } 2906 2907 if (cs->vp->v_type == VLNK) { 2908 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2909 goto out; 2910 } 2911 2912 if (cs->vp->v_type != VDIR) { 2913 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2914 goto out; 2915 } 2916 2917 status = utf8_dir_verify(&args->objname); 2918 if (status != NFS4_OK) { 2919 *cs->statusp = resp->status = status; 2920 goto out; 2921 } 2922 2923 nm = utf8_to_str(&args->objname, &len, NULL); 2924 if (nm == NULL) { 2925 *cs->statusp = resp->status = NFS4ERR_INVAL; 2926 goto out; 2927 } 2928 2929 if (len > MAXNAMELEN) { 2930 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2931 kmem_free(nm, len); 2932 goto out; 2933 } 2934 2935 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2936 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2937 MAXPATHLEN + 1); 2938 2939 if (name == NULL) { 2940 *cs->statusp = resp->status = NFS4ERR_INVAL; 2941 kmem_free(nm, len); 2942 goto out; 2943 } 2944 2945 *cs->statusp = resp->status = do_rfs4_op_lookup(name, req, cs); 2946 2947 if (name != nm) 2948 kmem_free(name, MAXPATHLEN + 1); 2949 kmem_free(nm, len); 2950 2951 out: 2952 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 2953 LOOKUP4res *, resp); 2954 } 2955 2956 /* ARGSUSED */ 2957 static void 2958 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2959 struct compound_state *cs) 2960 { 2961 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2962 2963 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 2964 2965 if (cs->vp == NULL) { 2966 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2967 goto out; 2968 } 2969 2970 if (cs->vp->v_type != VDIR) { 2971 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2972 goto out; 2973 } 2974 2975 *cs->statusp = resp->status = do_rfs4_op_lookup("..", req, cs); 2976 2977 /* 2978 * From NFSV4 Specification, LOOKUPP should not check for 2979 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 2980 */ 2981 if (resp->status == NFS4ERR_WRONGSEC) { 2982 *cs->statusp = resp->status = NFS4_OK; 2983 } 2984 2985 out: 2986 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 2987 LOOKUPP4res *, resp); 2988 } 2989 2990 2991 /*ARGSUSED2*/ 2992 static void 2993 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2994 struct compound_state *cs) 2995 { 2996 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 2997 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 2998 vnode_t *avp = NULL; 2999 int lookup_flags = LOOKUP_XATTR, error; 3000 int exp_ro = 0; 3001 3002 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 3003 OPENATTR4args *, args); 3004 3005 if (cs->vp == NULL) { 3006 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3007 goto out; 3008 } 3009 3010 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 3011 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 3012 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3013 goto out; 3014 } 3015 3016 /* 3017 * If file system supports passing ACE mask to VOP_ACCESS then 3018 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 3019 */ 3020 3021 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 3022 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 3023 V_ACE_MASK, cs->cr, NULL); 3024 else 3025 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 3026 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 3027 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 3028 3029 if (error) { 3030 *cs->statusp = resp->status = puterrno4(EACCES); 3031 goto out; 3032 } 3033 3034 /* 3035 * The CREATE_XATTR_DIR VOP flag cannot be specified if 3036 * the file system is exported read-only -- regardless of 3037 * createdir flag. Otherwise the attrdir would be created 3038 * (assuming server fs isn't mounted readonly locally). If 3039 * VOP_LOOKUP returns ENOENT in this case, the error will 3040 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3041 * because specfs has no VOP_LOOKUP op, so the macro would 3042 * return ENOSYS. EINVAL is returned by all (current) 3043 * Solaris file system implementations when any of their 3044 * restrictions are violated (xattr(dir) can't have xattrdir). 3045 * Returning NOTSUPP is more appropriate in this case 3046 * because the object will never be able to have an attrdir. 3047 */ 3048 if (args->createdir && ! (exp_ro = rdonly4(cs->exi, cs->vp, req))) 3049 lookup_flags |= CREATE_XATTR_DIR; 3050 3051 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3052 NULL, NULL, NULL); 3053 3054 if (error) { 3055 if (error == ENOENT && args->createdir && exp_ro) 3056 *cs->statusp = resp->status = puterrno4(EROFS); 3057 else if (error == EINVAL || error == ENOSYS) 3058 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3059 else 3060 *cs->statusp = resp->status = puterrno4(error); 3061 goto out; 3062 } 3063 3064 ASSERT(avp->v_flag & V_XATTRDIR); 3065 3066 error = makefh4(&cs->fh, avp, cs->exi); 3067 3068 if (error) { 3069 VN_RELE(avp); 3070 *cs->statusp = resp->status = puterrno4(error); 3071 goto out; 3072 } 3073 3074 VN_RELE(cs->vp); 3075 cs->vp = avp; 3076 3077 /* 3078 * There is no requirement for an attrdir fh flag 3079 * because the attrdir has a vnode flag to distinguish 3080 * it from regular (non-xattr) directories. The 3081 * FH4_ATTRDIR flag is set for future sanity checks. 3082 */ 3083 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3084 *cs->statusp = resp->status = NFS4_OK; 3085 3086 out: 3087 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3088 OPENATTR4res *, resp); 3089 } 3090 3091 static int 3092 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3093 caller_context_t *ct) 3094 { 3095 int error; 3096 int i; 3097 clock_t delaytime; 3098 3099 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3100 3101 /* 3102 * Don't block on mandatory locks. If this routine returns 3103 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3104 */ 3105 uio->uio_fmode = FNONBLOCK; 3106 3107 for (i = 0; i < rfs4_maxlock_tries; i++) { 3108 3109 3110 if (direction == FREAD) { 3111 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3112 error = VOP_READ(vp, uio, ioflag, cred, ct); 3113 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3114 } else { 3115 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3116 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3117 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3118 } 3119 3120 if (error != EAGAIN) 3121 break; 3122 3123 if (i < rfs4_maxlock_tries - 1) { 3124 delay(delaytime); 3125 delaytime *= 2; 3126 } 3127 } 3128 3129 return (error); 3130 } 3131 3132 /* ARGSUSED */ 3133 static void 3134 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3135 struct compound_state *cs) 3136 { 3137 READ4args *args = &argop->nfs_argop4_u.opread; 3138 READ4res *resp = &resop->nfs_resop4_u.opread; 3139 int error; 3140 int verror; 3141 vnode_t *vp; 3142 struct vattr va; 3143 struct iovec iov; 3144 struct uio uio; 3145 u_offset_t offset; 3146 bool_t *deleg = &cs->deleg; 3147 nfsstat4 stat; 3148 int in_crit = 0; 3149 mblk_t *mp = NULL; 3150 int alloc_err = 0; 3151 int rdma_used = 0; 3152 int loaned_buffers; 3153 caller_context_t ct; 3154 struct uio *uiop; 3155 3156 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3157 READ4args, args); 3158 3159 vp = cs->vp; 3160 if (vp == NULL) { 3161 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3162 goto out; 3163 } 3164 if (cs->access == CS_ACCESS_DENIED) { 3165 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3166 goto out; 3167 } 3168 3169 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3170 deleg, TRUE, &ct)) != NFS4_OK) { 3171 *cs->statusp = resp->status = stat; 3172 goto out; 3173 } 3174 3175 /* 3176 * Enter the critical region before calling VOP_RWLOCK 3177 * to avoid a deadlock with write requests. 3178 */ 3179 if (nbl_need_check(vp)) { 3180 nbl_start_crit(vp, RW_READER); 3181 in_crit = 1; 3182 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3183 &ct)) { 3184 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3185 goto out; 3186 } 3187 } 3188 3189 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3190 deleg, TRUE, &ct)) != NFS4_OK) { 3191 *cs->statusp = resp->status = stat; 3192 goto out; 3193 } 3194 3195 if (args->wlist) { 3196 if (args->count > clist_len(args->wlist)) { 3197 *cs->statusp = resp->status = NFS4ERR_INVAL; 3198 goto out; 3199 } 3200 rdma_used = 1; 3201 } 3202 3203 /* use loaned buffers for TCP */ 3204 loaned_buffers = (nfs_loaned_buffers && !rdma_used) ? 1 : 0; 3205 3206 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3207 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3208 3209 /* 3210 * If we can't get the attributes, then we can't do the 3211 * right access checking. So, we'll fail the request. 3212 */ 3213 if (verror) { 3214 *cs->statusp = resp->status = puterrno4(verror); 3215 goto out; 3216 } 3217 3218 if (vp->v_type != VREG) { 3219 *cs->statusp = resp->status = 3220 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3221 goto out; 3222 } 3223 3224 if (crgetuid(cs->cr) != va.va_uid && 3225 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3226 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3227 *cs->statusp = resp->status = puterrno4(error); 3228 goto out; 3229 } 3230 3231 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3232 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3233 goto out; 3234 } 3235 3236 offset = args->offset; 3237 if (offset >= va.va_size) { 3238 *cs->statusp = resp->status = NFS4_OK; 3239 resp->eof = TRUE; 3240 resp->data_len = 0; 3241 resp->data_val = NULL; 3242 resp->mblk = NULL; 3243 /* RDMA */ 3244 resp->wlist = args->wlist; 3245 resp->wlist_len = resp->data_len; 3246 *cs->statusp = resp->status = NFS4_OK; 3247 if (resp->wlist) 3248 clist_zero_len(resp->wlist); 3249 goto out; 3250 } 3251 3252 if (args->count == 0) { 3253 *cs->statusp = resp->status = NFS4_OK; 3254 resp->eof = FALSE; 3255 resp->data_len = 0; 3256 resp->data_val = NULL; 3257 resp->mblk = NULL; 3258 /* RDMA */ 3259 resp->wlist = args->wlist; 3260 resp->wlist_len = resp->data_len; 3261 if (resp->wlist) 3262 clist_zero_len(resp->wlist); 3263 goto out; 3264 } 3265 3266 /* 3267 * Do not allocate memory more than maximum allowed 3268 * transfer size 3269 */ 3270 if (args->count > rfs4_tsize(req)) 3271 args->count = rfs4_tsize(req); 3272 3273 if (loaned_buffers) { 3274 uiop = (uio_t *)rfs_setup_xuio(vp); 3275 ASSERT(uiop != NULL); 3276 uiop->uio_segflg = UIO_SYSSPACE; 3277 uiop->uio_loffset = args->offset; 3278 uiop->uio_resid = args->count; 3279 3280 /* Jump to do the read if successful */ 3281 if (!VOP_REQZCBUF(vp, UIO_READ, (xuio_t *)uiop, cs->cr, &ct)) { 3282 /* 3283 * Need to hold the vnode until after VOP_RETZCBUF() 3284 * is called. 3285 */ 3286 VN_HOLD(vp); 3287 goto doio_read; 3288 } 3289 3290 DTRACE_PROBE2(nfss__i__reqzcbuf_failed, int, 3291 uiop->uio_loffset, int, uiop->uio_resid); 3292 3293 uiop->uio_extflg = 0; 3294 3295 /* failure to setup for zero copy */ 3296 rfs_free_xuio((void *)uiop); 3297 loaned_buffers = 0; 3298 } 3299 3300 /* 3301 * If returning data via RDMA Write, then grab the chunk list. If we 3302 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3303 */ 3304 if (rdma_used) { 3305 mp = NULL; 3306 (void) rdma_get_wchunk(req, &iov, args->wlist); 3307 } else { 3308 /* 3309 * mp will contain the data to be sent out in the read reply. 3310 * It will be freed after the reply has been sent. Let's 3311 * roundup the data to a BYTES_PER_XDR_UNIT multiple, so that 3312 * the call to xdrmblk_putmblk() never fails. If the first 3313 * alloc of the requested size fails, then decrease the size to 3314 * something more reasonable and wait for the allocation to 3315 * occur. 3316 */ 3317 mp = allocb(RNDUP(args->count), BPRI_MED); 3318 if (mp == NULL) { 3319 if (args->count > MAXBSIZE) 3320 args->count = MAXBSIZE; 3321 mp = allocb_wait(RNDUP(args->count), BPRI_MED, 3322 STR_NOSIG, &alloc_err); 3323 } 3324 ASSERT(mp != NULL); 3325 ASSERT(alloc_err == 0); 3326 3327 iov.iov_base = (caddr_t)mp->b_datap->db_base; 3328 iov.iov_len = args->count; 3329 } 3330 3331 uio.uio_iov = &iov; 3332 uio.uio_iovcnt = 1; 3333 uio.uio_segflg = UIO_SYSSPACE; 3334 uio.uio_extflg = UIO_COPY_CACHED; 3335 uio.uio_loffset = args->offset; 3336 uio.uio_resid = args->count; 3337 uiop = &uio; 3338 3339 doio_read: 3340 error = do_io(FREAD, vp, uiop, 0, cs->cr, &ct); 3341 3342 va.va_mask = AT_SIZE; 3343 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3344 3345 if (error) { 3346 if (mp) 3347 freemsg(mp); 3348 *cs->statusp = resp->status = puterrno4(error); 3349 goto out; 3350 } 3351 3352 /* make mblk using zc buffers */ 3353 if (loaned_buffers) { 3354 mp = uio_to_mblk(uiop); 3355 ASSERT(mp != NULL); 3356 } 3357 3358 *cs->statusp = resp->status = NFS4_OK; 3359 3360 ASSERT(uiop->uio_resid >= 0); 3361 resp->data_len = args->count - uiop->uio_resid; 3362 if (mp) { 3363 resp->data_val = (char *)mp->b_datap->db_base; 3364 rfs_rndup_mblks(mp, resp->data_len, loaned_buffers); 3365 } else { 3366 resp->data_val = (caddr_t)iov.iov_base; 3367 } 3368 3369 resp->mblk = mp; 3370 3371 if (!verror && offset + resp->data_len == va.va_size) 3372 resp->eof = TRUE; 3373 else 3374 resp->eof = FALSE; 3375 3376 if (rdma_used) { 3377 if (!rdma_setup_read_data4(args, resp)) { 3378 *cs->statusp = resp->status = NFS4ERR_INVAL; 3379 } 3380 } else { 3381 resp->wlist = NULL; 3382 } 3383 3384 out: 3385 if (in_crit) 3386 nbl_end_crit(vp); 3387 3388 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3389 READ4res *, resp); 3390 } 3391 3392 static void 3393 rfs4_op_read_free(nfs_resop4 *resop) 3394 { 3395 READ4res *resp = &resop->nfs_resop4_u.opread; 3396 3397 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3398 freemsg(resp->mblk); 3399 resp->mblk = NULL; 3400 resp->data_val = NULL; 3401 resp->data_len = 0; 3402 } 3403 } 3404 3405 static void 3406 rfs4_op_readdir_free(nfs_resop4 * resop) 3407 { 3408 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3409 3410 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3411 freeb(resp->mblk); 3412 resp->mblk = NULL; 3413 resp->data_len = 0; 3414 } 3415 } 3416 3417 3418 /* ARGSUSED */ 3419 static void 3420 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3421 struct compound_state *cs) 3422 { 3423 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3424 int error; 3425 vnode_t *vp; 3426 struct exportinfo *exi, *sav_exi; 3427 nfs_fh4_fmt_t *fh_fmtp; 3428 3429 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3430 3431 if (cs->vp) { 3432 VN_RELE(cs->vp); 3433 cs->vp = NULL; 3434 } 3435 3436 if (cs->cr) 3437 crfree(cs->cr); 3438 3439 cs->cr = crdup(cs->basecr); 3440 3441 vp = exi_public->exi_vp; 3442 if (vp == NULL) { 3443 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3444 goto out; 3445 } 3446 3447 error = makefh4(&cs->fh, vp, exi_public); 3448 if (error != 0) { 3449 *cs->statusp = resp->status = puterrno4(error); 3450 goto out; 3451 } 3452 sav_exi = cs->exi; 3453 if (exi_public == exi_root) { 3454 /* 3455 * No filesystem is actually shared public, so we default 3456 * to exi_root. In this case, we must check whether root 3457 * is exported. 3458 */ 3459 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3460 3461 /* 3462 * if root filesystem is exported, the exportinfo struct that we 3463 * should use is what checkexport4 returns, because root_exi is 3464 * actually a mostly empty struct. 3465 */ 3466 exi = checkexport4(&fh_fmtp->fh4_fsid, 3467 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3468 cs->exi = ((exi != NULL) ? exi : exi_public); 3469 } else { 3470 /* 3471 * it's a properly shared filesystem 3472 */ 3473 cs->exi = exi_public; 3474 } 3475 3476 if (is_system_labeled()) { 3477 bslabel_t *clabel; 3478 3479 ASSERT(req->rq_label != NULL); 3480 clabel = req->rq_label; 3481 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3482 "got client label from request(1)", 3483 struct svc_req *, req); 3484 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3485 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 3486 cs->exi)) { 3487 *cs->statusp = resp->status = 3488 NFS4ERR_SERVERFAULT; 3489 goto out; 3490 } 3491 } 3492 } 3493 3494 VN_HOLD(vp); 3495 cs->vp = vp; 3496 3497 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3498 VN_RELE(cs->vp); 3499 cs->vp = NULL; 3500 cs->exi = sav_exi; 3501 goto out; 3502 } 3503 3504 *cs->statusp = resp->status = NFS4_OK; 3505 out: 3506 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3507 PUTPUBFH4res *, resp); 3508 } 3509 3510 /* 3511 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3512 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3513 * or joe have restrictive search permissions, then we shouldn't let 3514 * the client get a file handle. This is easy to enforce. However, we 3515 * don't know what security flavor should be used until we resolve the 3516 * path name. Another complication is uid mapping. If root is 3517 * the user, then it will be mapped to the anonymous user by default, 3518 * but we won't know that till we've resolved the path name. And we won't 3519 * know what the anonymous user is. 3520 * Luckily, SECINFO is specified to take a full filename. 3521 * So what we will have to in rfs4_op_lookup is check that flavor of 3522 * the target object matches that of the request, and if root was the 3523 * caller, check for the root= and anon= options, and if necessary, 3524 * repeat the lookup using the right cred_t. But that's not done yet. 3525 */ 3526 /* ARGSUSED */ 3527 static void 3528 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3529 struct compound_state *cs) 3530 { 3531 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3532 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3533 nfs_fh4_fmt_t *fh_fmtp; 3534 3535 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3536 PUTFH4args *, args); 3537 3538 if (cs->vp) { 3539 VN_RELE(cs->vp); 3540 cs->vp = NULL; 3541 } 3542 3543 if (cs->cr) { 3544 crfree(cs->cr); 3545 cs->cr = NULL; 3546 } 3547 3548 3549 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3550 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3551 goto out; 3552 } 3553 3554 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3555 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3556 NULL); 3557 3558 if (cs->exi == NULL) { 3559 *cs->statusp = resp->status = NFS4ERR_STALE; 3560 goto out; 3561 } 3562 3563 cs->cr = crdup(cs->basecr); 3564 3565 ASSERT(cs->cr != NULL); 3566 3567 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3568 *cs->statusp = resp->status; 3569 goto out; 3570 } 3571 3572 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3573 VN_RELE(cs->vp); 3574 cs->vp = NULL; 3575 goto out; 3576 } 3577 3578 nfs_fh4_copy(&args->object, &cs->fh); 3579 *cs->statusp = resp->status = NFS4_OK; 3580 cs->deleg = FALSE; 3581 3582 out: 3583 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3584 PUTFH4res *, resp); 3585 } 3586 3587 /* ARGSUSED */ 3588 static void 3589 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3590 struct compound_state *cs) 3591 { 3592 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3593 int error; 3594 fid_t fid; 3595 struct exportinfo *exi, *sav_exi; 3596 3597 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3598 3599 if (cs->vp) { 3600 VN_RELE(cs->vp); 3601 cs->vp = NULL; 3602 } 3603 3604 if (cs->cr) 3605 crfree(cs->cr); 3606 3607 cs->cr = crdup(cs->basecr); 3608 3609 /* 3610 * Using rootdir, the system root vnode, 3611 * get its fid. 3612 */ 3613 bzero(&fid, sizeof (fid)); 3614 fid.fid_len = MAXFIDSZ; 3615 error = vop_fid_pseudo(rootdir, &fid); 3616 if (error != 0) { 3617 *cs->statusp = resp->status = puterrno4(error); 3618 goto out; 3619 } 3620 3621 /* 3622 * Then use the root fsid & fid it to find out if it's exported 3623 * 3624 * If the server root isn't exported directly, then 3625 * it should at least be a pseudo export based on 3626 * one or more exports further down in the server's 3627 * file tree. 3628 */ 3629 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3630 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3631 NFS4_DEBUG(rfs4_debug, 3632 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3633 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3634 goto out; 3635 } 3636 3637 /* 3638 * Now make a filehandle based on the root 3639 * export and root vnode. 3640 */ 3641 error = makefh4(&cs->fh, rootdir, exi); 3642 if (error != 0) { 3643 *cs->statusp = resp->status = puterrno4(error); 3644 goto out; 3645 } 3646 3647 sav_exi = cs->exi; 3648 cs->exi = exi; 3649 3650 VN_HOLD(rootdir); 3651 cs->vp = rootdir; 3652 3653 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3654 VN_RELE(rootdir); 3655 cs->vp = NULL; 3656 cs->exi = sav_exi; 3657 goto out; 3658 } 3659 3660 *cs->statusp = resp->status = NFS4_OK; 3661 cs->deleg = FALSE; 3662 out: 3663 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3664 PUTROOTFH4res *, resp); 3665 } 3666 3667 /* 3668 * A directory entry is a valid nfsv4 entry if 3669 * - it has a non-zero ino 3670 * - it is not a dot or dotdot name 3671 * - it is visible in a pseudo export or in a real export that can 3672 * only have a limited view. 3673 */ 3674 static bool_t 3675 valid_nfs4_entry(struct exportinfo *exi, struct dirent64 *dp, 3676 int *expseudo, int check_visible) 3677 { 3678 if (dp->d_ino == 0 || NFS_IS_DOTNAME(dp->d_name)) { 3679 *expseudo = 0; 3680 return (FALSE); 3681 } 3682 3683 if (! check_visible) { 3684 *expseudo = 0; 3685 return (TRUE); 3686 } 3687 3688 return (nfs_visible_inode(exi, dp->d_ino, expseudo)); 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, &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 = &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(cs->exi, cs->vp, req)) { 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(cs->exi, cs->vp, req)) { 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(cs->exi, cs->vp, req)) { 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(cs->exi, cs->vp, req)) { 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 resp->status = utf8_name_verify(&(resp->tag)); 5811 if (resp->status != NFS4_OK) 5812 return; 5813 5814 /* 5815 * XXX for now, minorversion should be zero 5816 */ 5817 if (args->minorversion != NFS4_MINORVERSION) { 5818 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5819 &cs, COMPOUND4args *, args); 5820 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5821 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5822 &cs, COMPOUND4res *, resp); 5823 return; 5824 } 5825 5826 if (args->array_len == 0) { 5827 resp->status = NFS4_OK; 5828 return; 5829 } 5830 5831 ASSERT(exi == NULL); 5832 ASSERT(cr == NULL); 5833 5834 cr = crget(); 5835 ASSERT(cr != NULL); 5836 5837 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5838 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5839 &cs, COMPOUND4args *, args); 5840 crfree(cr); 5841 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5842 &cs, COMPOUND4res *, resp); 5843 svcerr_badcred(req->rq_xprt); 5844 if (rv != NULL) 5845 *rv = 1; 5846 return; 5847 } 5848 resp->array_len = args->array_len; 5849 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5850 KM_SLEEP); 5851 5852 cs.basecr = cr; 5853 5854 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5855 COMPOUND4args *, args); 5856 5857 /* 5858 * For now, NFS4 compound processing must be protected by 5859 * exported_lock because it can access more than one exportinfo 5860 * per compound and share/unshare can now change multiple 5861 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5862 * per proc (excluding public exinfo), and exi_count design 5863 * is sufficient to protect concurrent execution of NFS2/3 5864 * ops along with unexport. This lock will be removed as 5865 * part of the NFSv4 phase 2 namespace redesign work. 5866 */ 5867 rw_enter(&exported_lock, RW_READER); 5868 5869 /* 5870 * If this is the first compound we've seen, we need to start all 5871 * new instances' grace periods. 5872 */ 5873 if (rfs4_seen_first_compound == 0) { 5874 rfs4_grace_start_new(); 5875 /* 5876 * This must be set after rfs4_grace_start_new(), otherwise 5877 * another thread could proceed past here before the former 5878 * is finished. 5879 */ 5880 rfs4_seen_first_compound = 1; 5881 } 5882 5883 for (i = 0; i < args->array_len && cs.cont; i++) { 5884 nfs_argop4 *argop; 5885 nfs_resop4 *resop; 5886 uint_t op; 5887 5888 argop = &args->array[i]; 5889 resop = &resp->array[i]; 5890 resop->resop = argop->argop; 5891 op = (uint_t)resop->resop; 5892 5893 if (op < rfsv4disp_cnt) { 5894 /* 5895 * Count the individual ops here; NULL and COMPOUND 5896 * are counted in common_dispatch() 5897 */ 5898 rfsproccnt_v4_ptr[op].value.ui64++; 5899 5900 NFS4_DEBUG(rfs4_debug > 1, 5901 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5902 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5903 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5904 rfs4_op_string[op], *cs.statusp)); 5905 if (*cs.statusp != NFS4_OK) 5906 cs.cont = FALSE; 5907 } else { 5908 /* 5909 * This is effectively dead code since XDR code 5910 * will have already returned BADXDR if op doesn't 5911 * decode to legal value. This only done for a 5912 * day when XDR code doesn't verify v4 opcodes. 5913 */ 5914 op = OP_ILLEGAL; 5915 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5916 5917 rfs4_op_illegal(argop, resop, req, &cs); 5918 cs.cont = FALSE; 5919 } 5920 5921 /* 5922 * If not at last op, and if we are to stop, then 5923 * compact the results array. 5924 */ 5925 if ((i + 1) < args->array_len && !cs.cont) { 5926 nfs_resop4 *new_res = kmem_alloc( 5927 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 5928 bcopy(resp->array, 5929 new_res, (i+1) * sizeof (nfs_resop4)); 5930 kmem_free(resp->array, 5931 args->array_len * sizeof (nfs_resop4)); 5932 5933 resp->array_len = i + 1; 5934 resp->array = new_res; 5935 } 5936 } 5937 5938 rw_exit(&exported_lock); 5939 5940 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5941 COMPOUND4res *, resp); 5942 5943 if (cs.vp) 5944 VN_RELE(cs.vp); 5945 if (cs.saved_vp) 5946 VN_RELE(cs.saved_vp); 5947 if (cs.saved_fh.nfs_fh4_val) 5948 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5949 5950 if (cs.basecr) 5951 crfree(cs.basecr); 5952 if (cs.cr) 5953 crfree(cs.cr); 5954 /* 5955 * done with this compound request, free the label 5956 */ 5957 5958 if (req->rq_label != NULL) { 5959 kmem_free(req->rq_label, sizeof (bslabel_t)); 5960 req->rq_label = NULL; 5961 } 5962 } 5963 5964 /* 5965 * XXX because of what appears to be duplicate calls to rfs4_compound_free 5966 * XXX zero out the tag and array values. Need to investigate why the 5967 * XXX calls occur, but at least prevent the panic for now. 5968 */ 5969 void 5970 rfs4_compound_free(COMPOUND4res *resp) 5971 { 5972 uint_t i; 5973 5974 if (resp->tag.utf8string_val) { 5975 UTF8STRING_FREE(resp->tag) 5976 } 5977 5978 for (i = 0; i < resp->array_len; i++) { 5979 nfs_resop4 *resop; 5980 uint_t op; 5981 5982 resop = &resp->array[i]; 5983 op = (uint_t)resop->resop; 5984 if (op < rfsv4disp_cnt) { 5985 (*rfsv4disptab[op].dis_resfree)(resop); 5986 } 5987 } 5988 if (resp->array != NULL) { 5989 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 5990 } 5991 } 5992 5993 /* 5994 * Process the value of the compound request rpc flags, as a bit-AND 5995 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 5996 */ 5997 void 5998 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 5999 { 6000 int i; 6001 int flag = RPC_ALL; 6002 6003 for (i = 0; flag && i < args->array_len; i++) { 6004 uint_t op; 6005 6006 op = (uint_t)args->array[i].argop; 6007 6008 if (op < rfsv4disp_cnt) 6009 flag &= rfsv4disptab[op].dis_flags; 6010 else 6011 flag = 0; 6012 } 6013 *flagp = flag; 6014 } 6015 6016 nfsstat4 6017 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 6018 { 6019 nfsstat4 e; 6020 6021 rfs4_dbe_lock(cp->rc_dbe); 6022 6023 if (cp->rc_sysidt != LM_NOSYSID) { 6024 *sp = cp->rc_sysidt; 6025 e = NFS4_OK; 6026 6027 } else if ((cp->rc_sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 6028 *sp = cp->rc_sysidt; 6029 e = NFS4_OK; 6030 6031 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 6032 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 6033 } else 6034 e = NFS4ERR_DELAY; 6035 6036 rfs4_dbe_unlock(cp->rc_dbe); 6037 return (e); 6038 } 6039 6040 #if defined(DEBUG) && ! defined(lint) 6041 static void lock_print(char *str, int operation, struct flock64 *flk) 6042 { 6043 char *op, *type; 6044 6045 switch (operation) { 6046 case F_GETLK: op = "F_GETLK"; 6047 break; 6048 case F_SETLK: op = "F_SETLK"; 6049 break; 6050 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 6051 break; 6052 default: op = "F_UNKNOWN"; 6053 break; 6054 } 6055 switch (flk->l_type) { 6056 case F_UNLCK: type = "F_UNLCK"; 6057 break; 6058 case F_RDLCK: type = "F_RDLCK"; 6059 break; 6060 case F_WRLCK: type = "F_WRLCK"; 6061 break; 6062 default: type = "F_UNKNOWN"; 6063 break; 6064 } 6065 6066 ASSERT(flk->l_whence == 0); 6067 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 6068 str, op, type, (longlong_t)flk->l_start, 6069 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 6070 } 6071 6072 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 6073 #else 6074 #define LOCK_PRINT(d, s, t, f) 6075 #endif 6076 6077 /*ARGSUSED*/ 6078 static bool_t 6079 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 6080 { 6081 return (TRUE); 6082 } 6083 6084 /* 6085 * Look up the pathname using the vp in cs as the directory vnode. 6086 * cs->vp will be the vnode for the file on success 6087 */ 6088 6089 static nfsstat4 6090 rfs4_lookup(component4 *component, struct svc_req *req, 6091 struct compound_state *cs) 6092 { 6093 char *nm; 6094 uint32_t len; 6095 nfsstat4 status; 6096 struct sockaddr *ca; 6097 char *name; 6098 6099 if (cs->vp == NULL) { 6100 return (NFS4ERR_NOFILEHANDLE); 6101 } 6102 if (cs->vp->v_type != VDIR) { 6103 return (NFS4ERR_NOTDIR); 6104 } 6105 6106 status = utf8_dir_verify(component); 6107 if (status != NFS4_OK) 6108 return (status); 6109 6110 nm = utf8_to_fn(component, &len, NULL); 6111 if (nm == NULL) { 6112 return (NFS4ERR_INVAL); 6113 } 6114 6115 if (len > MAXNAMELEN) { 6116 kmem_free(nm, len); 6117 return (NFS4ERR_NAMETOOLONG); 6118 } 6119 6120 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6121 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6122 MAXPATHLEN + 1); 6123 6124 if (name == NULL) { 6125 kmem_free(nm, len); 6126 return (NFS4ERR_INVAL); 6127 } 6128 6129 status = do_rfs4_op_lookup(name, req, cs); 6130 6131 if (name != nm) 6132 kmem_free(name, MAXPATHLEN + 1); 6133 6134 kmem_free(nm, len); 6135 6136 return (status); 6137 } 6138 6139 static nfsstat4 6140 rfs4_lookupfile(component4 *component, struct svc_req *req, 6141 struct compound_state *cs, uint32_t access, change_info4 *cinfo) 6142 { 6143 nfsstat4 status; 6144 vnode_t *dvp = cs->vp; 6145 vattr_t bva, ava, fva; 6146 int error; 6147 6148 /* Get "before" change value */ 6149 bva.va_mask = AT_CTIME|AT_SEQ; 6150 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6151 if (error) 6152 return (puterrno4(error)); 6153 6154 /* rfs4_lookup may VN_RELE directory */ 6155 VN_HOLD(dvp); 6156 6157 status = rfs4_lookup(component, req, cs); 6158 if (status != NFS4_OK) { 6159 VN_RELE(dvp); 6160 return (status); 6161 } 6162 6163 /* 6164 * Get "after" change value, if it fails, simply return the 6165 * before value. 6166 */ 6167 ava.va_mask = AT_CTIME|AT_SEQ; 6168 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6169 ava.va_ctime = bva.va_ctime; 6170 ava.va_seq = 0; 6171 } 6172 VN_RELE(dvp); 6173 6174 /* 6175 * Validate the file is a file 6176 */ 6177 fva.va_mask = AT_TYPE|AT_MODE; 6178 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6179 if (error) 6180 return (puterrno4(error)); 6181 6182 if (fva.va_type != VREG) { 6183 if (fva.va_type == VDIR) 6184 return (NFS4ERR_ISDIR); 6185 if (fva.va_type == VLNK) 6186 return (NFS4ERR_SYMLINK); 6187 return (NFS4ERR_INVAL); 6188 } 6189 6190 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6191 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6192 6193 /* 6194 * It is undefined if VOP_LOOKUP will change va_seq, so 6195 * cinfo.atomic = TRUE only if we have 6196 * non-zero va_seq's, and they have not changed. 6197 */ 6198 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6199 cinfo->atomic = TRUE; 6200 else 6201 cinfo->atomic = FALSE; 6202 6203 /* Check for mandatory locking */ 6204 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6205 return (check_open_access(access, cs, req)); 6206 } 6207 6208 static nfsstat4 6209 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6210 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 6211 { 6212 int error; 6213 nfsstat4 status = NFS4_OK; 6214 vattr_t va; 6215 6216 tryagain: 6217 6218 /* 6219 * The file open mode used is VWRITE. If the client needs 6220 * some other semantic, then it should do the access checking 6221 * itself. It would have been nice to have the file open mode 6222 * passed as part of the arguments. 6223 */ 6224 6225 *created = TRUE; 6226 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6227 6228 if (error) { 6229 *created = FALSE; 6230 6231 /* 6232 * If we got something other than file already exists 6233 * then just return this error. Otherwise, we got 6234 * EEXIST. If we were doing a GUARDED create, then 6235 * just return this error. Otherwise, we need to 6236 * make sure that this wasn't a duplicate of an 6237 * exclusive create request. 6238 * 6239 * The assumption is made that a non-exclusive create 6240 * request will never return EEXIST. 6241 */ 6242 6243 if (error != EEXIST || mode == GUARDED4) { 6244 status = puterrno4(error); 6245 return (status); 6246 } 6247 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6248 NULL, NULL, NULL); 6249 6250 if (error) { 6251 /* 6252 * We couldn't find the file that we thought that 6253 * we just created. So, we'll just try creating 6254 * it again. 6255 */ 6256 if (error == ENOENT) 6257 goto tryagain; 6258 6259 status = puterrno4(error); 6260 return (status); 6261 } 6262 6263 if (mode == UNCHECKED4) { 6264 /* existing object must be regular file */ 6265 if ((*vpp)->v_type != VREG) { 6266 if ((*vpp)->v_type == VDIR) 6267 status = NFS4ERR_ISDIR; 6268 else if ((*vpp)->v_type == VLNK) 6269 status = NFS4ERR_SYMLINK; 6270 else 6271 status = NFS4ERR_INVAL; 6272 VN_RELE(*vpp); 6273 return (status); 6274 } 6275 6276 return (NFS4_OK); 6277 } 6278 6279 /* Check for duplicate request */ 6280 ASSERT(mtime != 0); 6281 va.va_mask = AT_MTIME; 6282 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6283 if (!error) { 6284 /* We found the file */ 6285 if (va.va_mtime.tv_sec != mtime->tv_sec || 6286 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6287 /* but its not our creation */ 6288 VN_RELE(*vpp); 6289 return (NFS4ERR_EXIST); 6290 } 6291 *created = TRUE; /* retrans of create == created */ 6292 return (NFS4_OK); 6293 } 6294 VN_RELE(*vpp); 6295 return (NFS4ERR_EXIST); 6296 } 6297 6298 return (NFS4_OK); 6299 } 6300 6301 static nfsstat4 6302 check_open_access(uint32_t access, struct compound_state *cs, 6303 struct svc_req *req) 6304 { 6305 int error; 6306 vnode_t *vp; 6307 bool_t readonly; 6308 cred_t *cr = cs->cr; 6309 6310 /* For now we don't allow mandatory locking as per V2/V3 */ 6311 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6312 return (NFS4ERR_ACCESS); 6313 } 6314 6315 vp = cs->vp; 6316 ASSERT(cr != NULL && vp->v_type == VREG); 6317 6318 /* 6319 * If the file system is exported read only and we are trying 6320 * to open for write, then return NFS4ERR_ROFS 6321 */ 6322 6323 readonly = rdonly4(cs->exi, cs->vp, req); 6324 6325 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6326 return (NFS4ERR_ROFS); 6327 6328 if (access & OPEN4_SHARE_ACCESS_READ) { 6329 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6330 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6331 return (NFS4ERR_ACCESS); 6332 } 6333 } 6334 6335 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6336 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6337 if (error) 6338 return (NFS4ERR_ACCESS); 6339 } 6340 6341 return (NFS4_OK); 6342 } 6343 6344 static nfsstat4 6345 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6346 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6347 { 6348 struct nfs4_svgetit_arg sarg; 6349 struct nfs4_ntov_table ntov; 6350 6351 bool_t ntov_table_init = FALSE; 6352 struct statvfs64 sb; 6353 nfsstat4 status; 6354 vnode_t *vp; 6355 vattr_t bva, ava, iva, cva, *vap; 6356 vnode_t *dvp; 6357 timespec32_t *mtime; 6358 char *nm = NULL; 6359 uint_t buflen; 6360 bool_t created; 6361 bool_t setsize = FALSE; 6362 len_t reqsize; 6363 int error; 6364 bool_t trunc; 6365 caller_context_t ct; 6366 component4 *component; 6367 bslabel_t *clabel; 6368 struct sockaddr *ca; 6369 char *name = NULL; 6370 6371 sarg.sbp = &sb; 6372 sarg.is_referral = B_FALSE; 6373 6374 dvp = cs->vp; 6375 6376 /* Check if the file system is read only */ 6377 if (rdonly4(cs->exi, dvp, req)) 6378 return (NFS4ERR_ROFS); 6379 6380 /* check the label of including directory */ 6381 if (is_system_labeled()) { 6382 ASSERT(req->rq_label != NULL); 6383 clabel = req->rq_label; 6384 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6385 "got client label from request(1)", 6386 struct svc_req *, req); 6387 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6388 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK, 6389 cs->exi)) { 6390 return (NFS4ERR_ACCESS); 6391 } 6392 } 6393 } 6394 6395 /* 6396 * Get the last component of path name in nm. cs will reference 6397 * the including directory on success. 6398 */ 6399 component = &args->open_claim4_u.file; 6400 status = utf8_dir_verify(component); 6401 if (status != NFS4_OK) 6402 return (status); 6403 6404 nm = utf8_to_fn(component, &buflen, NULL); 6405 6406 if (nm == NULL) 6407 return (NFS4ERR_RESOURCE); 6408 6409 if (buflen > MAXNAMELEN) { 6410 kmem_free(nm, buflen); 6411 return (NFS4ERR_NAMETOOLONG); 6412 } 6413 6414 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6415 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6416 if (error) { 6417 kmem_free(nm, buflen); 6418 return (puterrno4(error)); 6419 } 6420 6421 if (bva.va_type != VDIR) { 6422 kmem_free(nm, buflen); 6423 return (NFS4ERR_NOTDIR); 6424 } 6425 6426 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6427 6428 switch (args->mode) { 6429 case GUARDED4: 6430 /*FALLTHROUGH*/ 6431 case UNCHECKED4: 6432 nfs4_ntov_table_init(&ntov); 6433 ntov_table_init = TRUE; 6434 6435 *attrset = 0; 6436 status = do_rfs4_set_attrs(attrset, 6437 &args->createhow4_u.createattrs, 6438 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6439 6440 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6441 sarg.vap->va_type != VREG) { 6442 if (sarg.vap->va_type == VDIR) 6443 status = NFS4ERR_ISDIR; 6444 else if (sarg.vap->va_type == VLNK) 6445 status = NFS4ERR_SYMLINK; 6446 else 6447 status = NFS4ERR_INVAL; 6448 } 6449 6450 if (status != NFS4_OK) { 6451 kmem_free(nm, buflen); 6452 nfs4_ntov_table_free(&ntov, &sarg); 6453 *attrset = 0; 6454 return (status); 6455 } 6456 6457 vap = sarg.vap; 6458 vap->va_type = VREG; 6459 vap->va_mask |= AT_TYPE; 6460 6461 if ((vap->va_mask & AT_MODE) == 0) { 6462 vap->va_mask |= AT_MODE; 6463 vap->va_mode = (mode_t)0600; 6464 } 6465 6466 if (vap->va_mask & AT_SIZE) { 6467 6468 /* Disallow create with a non-zero size */ 6469 6470 if ((reqsize = sarg.vap->va_size) != 0) { 6471 kmem_free(nm, buflen); 6472 nfs4_ntov_table_free(&ntov, &sarg); 6473 *attrset = 0; 6474 return (NFS4ERR_INVAL); 6475 } 6476 setsize = TRUE; 6477 } 6478 break; 6479 6480 case EXCLUSIVE4: 6481 /* prohibit EXCL create of named attributes */ 6482 if (dvp->v_flag & V_XATTRDIR) { 6483 kmem_free(nm, buflen); 6484 *attrset = 0; 6485 return (NFS4ERR_INVAL); 6486 } 6487 6488 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6489 cva.va_type = VREG; 6490 /* 6491 * Ensure no time overflows. Assumes underlying 6492 * filesystem supports at least 32 bits. 6493 * Truncate nsec to usec resolution to allow valid 6494 * compares even if the underlying filesystem truncates. 6495 */ 6496 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6497 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6498 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6499 cva.va_mode = (mode_t)0; 6500 vap = &cva; 6501 6502 /* 6503 * For EXCL create, attrset is set to the server attr 6504 * used to cache the client's verifier. 6505 */ 6506 *attrset = FATTR4_TIME_MODIFY_MASK; 6507 break; 6508 } 6509 6510 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6511 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6512 MAXPATHLEN + 1); 6513 6514 if (name == NULL) { 6515 kmem_free(nm, buflen); 6516 return (NFS4ERR_SERVERFAULT); 6517 } 6518 6519 status = create_vnode(dvp, name, vap, args->mode, mtime, 6520 cs->cr, &vp, &created); 6521 if (nm != name) 6522 kmem_free(name, MAXPATHLEN + 1); 6523 kmem_free(nm, buflen); 6524 6525 if (status != NFS4_OK) { 6526 if (ntov_table_init) 6527 nfs4_ntov_table_free(&ntov, &sarg); 6528 *attrset = 0; 6529 return (status); 6530 } 6531 6532 trunc = (setsize && !created); 6533 6534 if (args->mode != EXCLUSIVE4) { 6535 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6536 6537 /* 6538 * True verification that object was created with correct 6539 * attrs is impossible. The attrs could have been changed 6540 * immediately after object creation. If attributes did 6541 * not verify, the only recourse for the server is to 6542 * destroy the object. Maybe if some attrs (like gid) 6543 * are set incorrectly, the object should be destroyed; 6544 * however, seems bad as a default policy. Do we really 6545 * want to destroy an object over one of the times not 6546 * verifying correctly? For these reasons, the server 6547 * currently sets bits in attrset for createattrs 6548 * that were set; however, no verification is done. 6549 * 6550 * vmask_to_nmask accounts for vattr bits set on create 6551 * [do_rfs4_set_attrs() only sets resp bits for 6552 * non-vattr/vfs bits.] 6553 * Mask off any bits we set by default so as not to return 6554 * more attrset bits than were requested in createattrs 6555 */ 6556 if (created) { 6557 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6558 *attrset &= createmask; 6559 } else { 6560 /* 6561 * We did not create the vnode (we tried but it 6562 * already existed). In this case, the only createattr 6563 * that the spec allows the server to set is size, 6564 * and even then, it can only be set if it is 0. 6565 */ 6566 *attrset = 0; 6567 if (trunc) 6568 *attrset = FATTR4_SIZE_MASK; 6569 } 6570 } 6571 if (ntov_table_init) 6572 nfs4_ntov_table_free(&ntov, &sarg); 6573 6574 /* 6575 * Get the initial "after" sequence number, if it fails, 6576 * set to zero, time to before. 6577 */ 6578 iva.va_mask = AT_CTIME|AT_SEQ; 6579 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6580 iva.va_seq = 0; 6581 iva.va_ctime = bva.va_ctime; 6582 } 6583 6584 /* 6585 * create_vnode attempts to create the file exclusive, 6586 * if it already exists the VOP_CREATE will fail and 6587 * may not increase va_seq. It is atomic if 6588 * we haven't changed the directory, but if it has changed 6589 * we don't know what changed it. 6590 */ 6591 if (!created) { 6592 if (bva.va_seq && iva.va_seq && 6593 bva.va_seq == iva.va_seq) 6594 cinfo->atomic = TRUE; 6595 else 6596 cinfo->atomic = FALSE; 6597 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6598 } else { 6599 /* 6600 * The entry was created, we need to sync the 6601 * directory metadata. 6602 */ 6603 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6604 6605 /* 6606 * Get "after" change value, if it fails, simply return the 6607 * before value. 6608 */ 6609 ava.va_mask = AT_CTIME|AT_SEQ; 6610 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6611 ava.va_ctime = bva.va_ctime; 6612 ava.va_seq = 0; 6613 } 6614 6615 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6616 6617 /* 6618 * The cinfo->atomic = TRUE only if we have 6619 * non-zero va_seq's, and it has incremented by exactly one 6620 * during the create_vnode and it didn't 6621 * change during the VOP_FSYNC. 6622 */ 6623 if (bva.va_seq && iva.va_seq && ava.va_seq && 6624 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6625 cinfo->atomic = TRUE; 6626 else 6627 cinfo->atomic = FALSE; 6628 } 6629 6630 /* Check for mandatory locking and that the size gets set. */ 6631 cva.va_mask = AT_MODE; 6632 if (setsize) 6633 cva.va_mask |= AT_SIZE; 6634 6635 /* Assume the worst */ 6636 cs->mandlock = TRUE; 6637 6638 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6639 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6640 6641 /* 6642 * Truncate the file if necessary; this would be 6643 * the case for create over an existing file. 6644 */ 6645 6646 if (trunc) { 6647 int in_crit = 0; 6648 rfs4_file_t *fp; 6649 bool_t create = FALSE; 6650 6651 /* 6652 * We are writing over an existing file. 6653 * Check to see if we need to recall a delegation. 6654 */ 6655 rfs4_hold_deleg_policy(); 6656 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6657 if (rfs4_check_delegated_byfp(FWRITE, fp, 6658 (reqsize == 0), FALSE, FALSE, &clientid)) { 6659 rfs4_file_rele(fp); 6660 rfs4_rele_deleg_policy(); 6661 VN_RELE(vp); 6662 *attrset = 0; 6663 return (NFS4ERR_DELAY); 6664 } 6665 rfs4_file_rele(fp); 6666 } 6667 rfs4_rele_deleg_policy(); 6668 6669 if (nbl_need_check(vp)) { 6670 in_crit = 1; 6671 6672 ASSERT(reqsize == 0); 6673 6674 nbl_start_crit(vp, RW_READER); 6675 if (nbl_conflict(vp, NBL_WRITE, 0, 6676 cva.va_size, 0, NULL)) { 6677 in_crit = 0; 6678 nbl_end_crit(vp); 6679 VN_RELE(vp); 6680 *attrset = 0; 6681 return (NFS4ERR_ACCESS); 6682 } 6683 } 6684 ct.cc_sysid = 0; 6685 ct.cc_pid = 0; 6686 ct.cc_caller_id = nfs4_srv_caller_id; 6687 ct.cc_flags = CC_DONTBLOCK; 6688 6689 cva.va_mask = AT_SIZE; 6690 cva.va_size = reqsize; 6691 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6692 if (in_crit) 6693 nbl_end_crit(vp); 6694 } 6695 } 6696 6697 error = makefh4(&cs->fh, vp, cs->exi); 6698 6699 /* 6700 * Force modified data and metadata out to stable storage. 6701 */ 6702 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6703 6704 if (error) { 6705 VN_RELE(vp); 6706 *attrset = 0; 6707 return (puterrno4(error)); 6708 } 6709 6710 /* if parent dir is attrdir, set namedattr fh flag */ 6711 if (dvp->v_flag & V_XATTRDIR) 6712 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6713 6714 if (cs->vp) 6715 VN_RELE(cs->vp); 6716 6717 cs->vp = vp; 6718 6719 /* 6720 * if we did not create the file, we will need to check 6721 * the access bits on the file 6722 */ 6723 6724 if (!created) { 6725 if (setsize) 6726 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6727 status = check_open_access(args->share_access, cs, req); 6728 if (status != NFS4_OK) 6729 *attrset = 0; 6730 } 6731 return (status); 6732 } 6733 6734 /*ARGSUSED*/ 6735 static void 6736 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6737 rfs4_openowner_t *oo, delegreq_t deleg, 6738 uint32_t access, uint32_t deny, 6739 OPEN4res *resp, int deleg_cur) 6740 { 6741 /* XXX Currently not using req */ 6742 rfs4_state_t *sp; 6743 rfs4_file_t *fp; 6744 bool_t screate = TRUE; 6745 bool_t fcreate = TRUE; 6746 uint32_t open_a, share_a; 6747 uint32_t open_d, share_d; 6748 rfs4_deleg_state_t *dsp; 6749 sysid_t sysid; 6750 nfsstat4 status; 6751 caller_context_t ct; 6752 int fflags = 0; 6753 int recall = 0; 6754 int err; 6755 int first_open; 6756 6757 /* get the file struct and hold a lock on it during initial open */ 6758 fp = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6759 if (fp == NULL) { 6760 resp->status = NFS4ERR_RESOURCE; 6761 DTRACE_PROBE1(nfss__e__do__open1, nfsstat4, resp->status); 6762 return; 6763 } 6764 6765 sp = rfs4_findstate_by_owner_file(oo, fp, &screate); 6766 if (sp == NULL) { 6767 resp->status = NFS4ERR_RESOURCE; 6768 DTRACE_PROBE1(nfss__e__do__open2, nfsstat4, resp->status); 6769 /* No need to keep any reference */ 6770 rw_exit(&fp->rf_file_rwlock); 6771 rfs4_file_rele(fp); 6772 return; 6773 } 6774 6775 /* try to get the sysid before continuing */ 6776 if ((status = rfs4_client_sysid(oo->ro_client, &sysid)) != NFS4_OK) { 6777 resp->status = status; 6778 rfs4_file_rele(fp); 6779 /* Not a fully formed open; "close" it */ 6780 if (screate == TRUE) 6781 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6782 rfs4_state_rele(sp); 6783 return; 6784 } 6785 6786 /* Calculate the fflags for this OPEN. */ 6787 if (access & OPEN4_SHARE_ACCESS_READ) 6788 fflags |= FREAD; 6789 if (access & OPEN4_SHARE_ACCESS_WRITE) 6790 fflags |= FWRITE; 6791 6792 rfs4_dbe_lock(sp->rs_dbe); 6793 6794 /* 6795 * Calculate the new deny and access mode that this open is adding to 6796 * the file for this open owner; 6797 */ 6798 open_d = (deny & ~sp->rs_open_deny); 6799 open_a = (access & ~sp->rs_open_access); 6800 6801 /* 6802 * Calculate the new share access and share deny modes that this open 6803 * is adding to the file for this open owner; 6804 */ 6805 share_a = (access & ~sp->rs_share_access); 6806 share_d = (deny & ~sp->rs_share_deny); 6807 6808 first_open = (sp->rs_open_access & OPEN4_SHARE_ACCESS_BOTH) == 0; 6809 6810 /* 6811 * Check to see the client has already sent an open for this 6812 * open owner on this file with the same share/deny modes. 6813 * If so, we don't need to check for a conflict and we don't 6814 * need to add another shrlock. If not, then we need to 6815 * check for conflicts in deny and access before checking for 6816 * conflicts in delegation. We don't want to recall a 6817 * delegation based on an open that will eventually fail based 6818 * on shares modes. 6819 */ 6820 6821 if (share_a || share_d) { 6822 if ((err = rfs4_share(sp, access, deny)) != 0) { 6823 rfs4_dbe_unlock(sp->rs_dbe); 6824 resp->status = err; 6825 6826 rfs4_file_rele(fp); 6827 /* Not a fully formed open; "close" it */ 6828 if (screate == TRUE) 6829 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6830 rfs4_state_rele(sp); 6831 return; 6832 } 6833 } 6834 6835 rfs4_dbe_lock(fp->rf_dbe); 6836 6837 /* 6838 * Check to see if this file is delegated and if so, if a 6839 * recall needs to be done. 6840 */ 6841 if (rfs4_check_recall(sp, access)) { 6842 rfs4_dbe_unlock(fp->rf_dbe); 6843 rfs4_dbe_unlock(sp->rs_dbe); 6844 rfs4_recall_deleg(fp, FALSE, sp->rs_owner->ro_client); 6845 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6846 rfs4_dbe_lock(sp->rs_dbe); 6847 6848 /* if state closed while lock was dropped */ 6849 if (sp->rs_closed) { 6850 if (share_a || share_d) 6851 (void) rfs4_unshare(sp); 6852 rfs4_dbe_unlock(sp->rs_dbe); 6853 rfs4_file_rele(fp); 6854 /* Not a fully formed open; "close" it */ 6855 if (screate == TRUE) 6856 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6857 rfs4_state_rele(sp); 6858 resp->status = NFS4ERR_OLD_STATEID; 6859 return; 6860 } 6861 6862 rfs4_dbe_lock(fp->rf_dbe); 6863 /* Let's see if the delegation was returned */ 6864 if (rfs4_check_recall(sp, access)) { 6865 rfs4_dbe_unlock(fp->rf_dbe); 6866 if (share_a || share_d) 6867 (void) rfs4_unshare(sp); 6868 rfs4_dbe_unlock(sp->rs_dbe); 6869 rfs4_file_rele(fp); 6870 rfs4_update_lease(sp->rs_owner->ro_client); 6871 6872 /* Not a fully formed open; "close" it */ 6873 if (screate == TRUE) 6874 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6875 rfs4_state_rele(sp); 6876 resp->status = NFS4ERR_DELAY; 6877 return; 6878 } 6879 } 6880 /* 6881 * the share check passed and any delegation conflict has been 6882 * taken care of, now call vop_open. 6883 * if this is the first open then call vop_open with fflags. 6884 * if not, call vn_open_upgrade with just the upgrade flags. 6885 * 6886 * if the file has been opened already, it will have the current 6887 * access mode in the state struct. if it has no share access, then 6888 * this is a new open. 6889 * 6890 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 6891 * call VOP_OPEN(), just do the open upgrade. 6892 */ 6893 if (first_open && !deleg_cur) { 6894 ct.cc_sysid = sysid; 6895 ct.cc_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 6896 ct.cc_caller_id = nfs4_srv_caller_id; 6897 ct.cc_flags = CC_DONTBLOCK; 6898 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 6899 if (err) { 6900 rfs4_dbe_unlock(fp->rf_dbe); 6901 if (share_a || share_d) 6902 (void) rfs4_unshare(sp); 6903 rfs4_dbe_unlock(sp->rs_dbe); 6904 rfs4_file_rele(fp); 6905 6906 /* Not a fully formed open; "close" it */ 6907 if (screate == TRUE) 6908 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6909 rfs4_state_rele(sp); 6910 /* check if a monitor detected a delegation conflict */ 6911 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 6912 resp->status = NFS4ERR_DELAY; 6913 else 6914 resp->status = NFS4ERR_SERVERFAULT; 6915 return; 6916 } 6917 } else { /* open upgrade */ 6918 /* 6919 * calculate the fflags for the new mode that is being added 6920 * by this upgrade. 6921 */ 6922 fflags = 0; 6923 if (open_a & OPEN4_SHARE_ACCESS_READ) 6924 fflags |= FREAD; 6925 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6926 fflags |= FWRITE; 6927 vn_open_upgrade(cs->vp, fflags); 6928 } 6929 sp->rs_open_access |= access; 6930 sp->rs_open_deny |= deny; 6931 6932 if (open_d & OPEN4_SHARE_DENY_READ) 6933 fp->rf_deny_read++; 6934 if (open_d & OPEN4_SHARE_DENY_WRITE) 6935 fp->rf_deny_write++; 6936 fp->rf_share_deny |= deny; 6937 6938 if (open_a & OPEN4_SHARE_ACCESS_READ) 6939 fp->rf_access_read++; 6940 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6941 fp->rf_access_write++; 6942 fp->rf_share_access |= access; 6943 6944 /* 6945 * Check for delegation here. if the deleg argument is not 6946 * DELEG_ANY, then this is a reclaim from a client and 6947 * we must honor the delegation requested. If necessary we can 6948 * set the recall flag. 6949 */ 6950 6951 dsp = rfs4_grant_delegation(deleg, sp, &recall); 6952 6953 cs->deleg = (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE); 6954 6955 next_stateid(&sp->rs_stateid); 6956 6957 resp->stateid = sp->rs_stateid.stateid; 6958 6959 rfs4_dbe_unlock(fp->rf_dbe); 6960 rfs4_dbe_unlock(sp->rs_dbe); 6961 6962 if (dsp) { 6963 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 6964 rfs4_deleg_state_rele(dsp); 6965 } 6966 6967 rfs4_file_rele(fp); 6968 rfs4_state_rele(sp); 6969 6970 resp->status = NFS4_OK; 6971 } 6972 6973 /*ARGSUSED*/ 6974 static void 6975 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 6976 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6977 { 6978 change_info4 *cinfo = &resp->cinfo; 6979 bitmap4 *attrset = &resp->attrset; 6980 6981 if (args->opentype == OPEN4_NOCREATE) 6982 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 6983 req, cs, args->share_access, cinfo); 6984 else { 6985 /* inhibit delegation grants during exclusive create */ 6986 6987 if (args->mode == EXCLUSIVE4) 6988 rfs4_disable_delegation(); 6989 6990 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 6991 oo->ro_client->rc_clientid); 6992 } 6993 6994 if (resp->status == NFS4_OK) { 6995 6996 /* cs->vp cs->fh now reference the desired file */ 6997 6998 rfs4_do_open(cs, req, oo, 6999 oo->ro_need_confirm ? DELEG_NONE : DELEG_ANY, 7000 args->share_access, args->share_deny, resp, 0); 7001 7002 /* 7003 * If rfs4_createfile set attrset, we must 7004 * clear this attrset before the response is copied. 7005 */ 7006 if (resp->status != NFS4_OK && resp->attrset) { 7007 resp->attrset = 0; 7008 } 7009 } 7010 else 7011 *cs->statusp = resp->status; 7012 7013 if (args->mode == EXCLUSIVE4) 7014 rfs4_enable_delegation(); 7015 } 7016 7017 /*ARGSUSED*/ 7018 static void 7019 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 7020 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7021 { 7022 change_info4 *cinfo = &resp->cinfo; 7023 vattr_t va; 7024 vtype_t v_type = cs->vp->v_type; 7025 int error = 0; 7026 7027 /* Verify that we have a regular file */ 7028 if (v_type != VREG) { 7029 if (v_type == VDIR) 7030 resp->status = NFS4ERR_ISDIR; 7031 else if (v_type == VLNK) 7032 resp->status = NFS4ERR_SYMLINK; 7033 else 7034 resp->status = NFS4ERR_INVAL; 7035 return; 7036 } 7037 7038 va.va_mask = AT_MODE|AT_UID; 7039 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 7040 if (error) { 7041 resp->status = puterrno4(error); 7042 return; 7043 } 7044 7045 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 7046 7047 /* 7048 * Check if we have access to the file, Note the the file 7049 * could have originally been open UNCHECKED or GUARDED 7050 * with mode bits that will now fail, but there is nothing 7051 * we can really do about that except in the case that the 7052 * owner of the file is the one requesting the open. 7053 */ 7054 if (crgetuid(cs->cr) != va.va_uid) { 7055 resp->status = check_open_access(args->share_access, cs, req); 7056 if (resp->status != NFS4_OK) { 7057 return; 7058 } 7059 } 7060 7061 /* 7062 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 7063 */ 7064 cinfo->before = 0; 7065 cinfo->after = 0; 7066 cinfo->atomic = FALSE; 7067 7068 rfs4_do_open(cs, req, oo, 7069 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 7070 args->share_access, args->share_deny, resp, 0); 7071 } 7072 7073 static void 7074 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 7075 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7076 { 7077 int error; 7078 nfsstat4 status; 7079 stateid4 stateid = 7080 args->open_claim4_u.delegate_cur_info.delegate_stateid; 7081 rfs4_deleg_state_t *dsp; 7082 7083 /* 7084 * Find the state info from the stateid and confirm that the 7085 * file is delegated. If the state openowner is the same as 7086 * the supplied openowner we're done. If not, get the file 7087 * info from the found state info. Use that file info to 7088 * create the state for this lock owner. Note solaris doen't 7089 * really need the pathname to find the file. We may want to 7090 * lookup the pathname and make sure that the vp exist and 7091 * matches the vp in the file structure. However it is 7092 * possible that the pathname nolonger exists (local process 7093 * unlinks the file), so this may not be that useful. 7094 */ 7095 7096 status = rfs4_get_deleg_state(&stateid, &dsp); 7097 if (status != NFS4_OK) { 7098 resp->status = status; 7099 return; 7100 } 7101 7102 ASSERT(dsp->rds_finfo->rf_dinfo.rd_dtype != OPEN_DELEGATE_NONE); 7103 7104 /* 7105 * New lock owner, create state. Since this was probably called 7106 * in response to a CB_RECALL we set deleg to DELEG_NONE 7107 */ 7108 7109 ASSERT(cs->vp != NULL); 7110 VN_RELE(cs->vp); 7111 VN_HOLD(dsp->rds_finfo->rf_vp); 7112 cs->vp = dsp->rds_finfo->rf_vp; 7113 7114 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 7115 rfs4_deleg_state_rele(dsp); 7116 *cs->statusp = resp->status = puterrno4(error); 7117 return; 7118 } 7119 7120 /* Mark progress for delegation returns */ 7121 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = gethrestime_sec(); 7122 rfs4_deleg_state_rele(dsp); 7123 rfs4_do_open(cs, req, oo, DELEG_NONE, 7124 args->share_access, args->share_deny, resp, 1); 7125 } 7126 7127 /*ARGSUSED*/ 7128 static void 7129 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 7130 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7131 { 7132 /* 7133 * Lookup the pathname, it must already exist since this file 7134 * was delegated. 7135 * 7136 * Find the file and state info for this vp and open owner pair. 7137 * check that they are in fact delegated. 7138 * check that the state access and deny modes are the same. 7139 * 7140 * Return the delgation possibly seting the recall flag. 7141 */ 7142 rfs4_file_t *fp; 7143 rfs4_state_t *sp; 7144 bool_t create = FALSE; 7145 bool_t dcreate = FALSE; 7146 rfs4_deleg_state_t *dsp; 7147 nfsace4 *ace; 7148 7149 /* Note we ignore oflags */ 7150 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 7151 req, cs, args->share_access, &resp->cinfo); 7152 7153 if (resp->status != NFS4_OK) { 7154 return; 7155 } 7156 7157 /* get the file struct and hold a lock on it during initial open */ 7158 fp = rfs4_findfile_withlock(cs->vp, NULL, &create); 7159 if (fp == NULL) { 7160 resp->status = NFS4ERR_RESOURCE; 7161 DTRACE_PROBE1(nfss__e__do_opendelprev1, nfsstat4, resp->status); 7162 return; 7163 } 7164 7165 sp = rfs4_findstate_by_owner_file(oo, fp, &create); 7166 if (sp == NULL) { 7167 resp->status = NFS4ERR_SERVERFAULT; 7168 DTRACE_PROBE1(nfss__e__do_opendelprev2, nfsstat4, resp->status); 7169 rw_exit(&fp->rf_file_rwlock); 7170 rfs4_file_rele(fp); 7171 return; 7172 } 7173 7174 rfs4_dbe_lock(sp->rs_dbe); 7175 rfs4_dbe_lock(fp->rf_dbe); 7176 if (args->share_access != sp->rs_share_access || 7177 args->share_deny != sp->rs_share_deny || 7178 sp->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) { 7179 NFS4_DEBUG(rfs4_debug, 7180 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 7181 rfs4_dbe_unlock(fp->rf_dbe); 7182 rfs4_dbe_unlock(sp->rs_dbe); 7183 rfs4_file_rele(fp); 7184 rfs4_state_rele(sp); 7185 resp->status = NFS4ERR_SERVERFAULT; 7186 return; 7187 } 7188 rfs4_dbe_unlock(fp->rf_dbe); 7189 rfs4_dbe_unlock(sp->rs_dbe); 7190 7191 dsp = rfs4_finddeleg(sp, &dcreate); 7192 if (dsp == NULL) { 7193 rfs4_state_rele(sp); 7194 rfs4_file_rele(fp); 7195 resp->status = NFS4ERR_SERVERFAULT; 7196 return; 7197 } 7198 7199 next_stateid(&sp->rs_stateid); 7200 7201 resp->stateid = sp->rs_stateid.stateid; 7202 7203 resp->delegation.delegation_type = dsp->rds_dtype; 7204 7205 if (dsp->rds_dtype == OPEN_DELEGATE_READ) { 7206 open_read_delegation4 *rv = 7207 &resp->delegation.open_delegation4_u.read; 7208 7209 rv->stateid = dsp->rds_delegid.stateid; 7210 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7211 ace = &rv->permissions; 7212 } else { 7213 open_write_delegation4 *rv = 7214 &resp->delegation.open_delegation4_u.write; 7215 7216 rv->stateid = dsp->rds_delegid.stateid; 7217 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7218 ace = &rv->permissions; 7219 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7220 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7221 } 7222 7223 /* XXX For now */ 7224 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7225 ace->flag = 0; 7226 ace->access_mask = 0; 7227 ace->who.utf8string_len = 0; 7228 ace->who.utf8string_val = 0; 7229 7230 rfs4_deleg_state_rele(dsp); 7231 rfs4_state_rele(sp); 7232 rfs4_file_rele(fp); 7233 } 7234 7235 typedef enum { 7236 NFS4_CHKSEQ_OKAY = 0, 7237 NFS4_CHKSEQ_REPLAY = 1, 7238 NFS4_CHKSEQ_BAD = 2 7239 } rfs4_chkseq_t; 7240 7241 /* 7242 * Generic function for sequence number checks. 7243 */ 7244 static rfs4_chkseq_t 7245 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7246 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7247 { 7248 /* Same sequence ids and matching operations? */ 7249 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7250 if (copyres == TRUE) { 7251 rfs4_free_reply(resop); 7252 rfs4_copy_reply(resop, lastop); 7253 } 7254 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7255 "Replayed SEQID %d\n", seqid)); 7256 return (NFS4_CHKSEQ_REPLAY); 7257 } 7258 7259 /* If the incoming sequence is not the next expected then it is bad */ 7260 if (rqst_seq != seqid + 1) { 7261 if (rqst_seq == seqid) { 7262 NFS4_DEBUG(rfs4_debug, 7263 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7264 "but last op was %d current op is %d\n", 7265 lastop->resop, resop->resop)); 7266 return (NFS4_CHKSEQ_BAD); 7267 } 7268 NFS4_DEBUG(rfs4_debug, 7269 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7270 rqst_seq, seqid)); 7271 return (NFS4_CHKSEQ_BAD); 7272 } 7273 7274 /* Everything okay -- next expected */ 7275 return (NFS4_CHKSEQ_OKAY); 7276 } 7277 7278 7279 static rfs4_chkseq_t 7280 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7281 { 7282 rfs4_chkseq_t rc; 7283 7284 rfs4_dbe_lock(op->ro_dbe); 7285 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, seqid, resop, 7286 TRUE); 7287 rfs4_dbe_unlock(op->ro_dbe); 7288 7289 if (rc == NFS4_CHKSEQ_OKAY) 7290 rfs4_update_lease(op->ro_client); 7291 7292 return (rc); 7293 } 7294 7295 static rfs4_chkseq_t 7296 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7297 { 7298 rfs4_chkseq_t rc; 7299 7300 rfs4_dbe_lock(op->ro_dbe); 7301 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, 7302 olo_seqid, resop, FALSE); 7303 rfs4_dbe_unlock(op->ro_dbe); 7304 7305 return (rc); 7306 } 7307 7308 static rfs4_chkseq_t 7309 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lsp, nfs_resop4 *resop) 7310 { 7311 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7312 7313 rfs4_dbe_lock(lsp->rls_dbe); 7314 if (!lsp->rls_skip_seqid_check) 7315 rc = rfs4_check_seqid(lsp->rls_seqid, &lsp->rls_reply, seqid, 7316 resop, TRUE); 7317 rfs4_dbe_unlock(lsp->rls_dbe); 7318 7319 return (rc); 7320 } 7321 7322 static void 7323 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7324 struct svc_req *req, struct compound_state *cs) 7325 { 7326 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7327 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7328 open_owner4 *owner = &args->owner; 7329 open_claim_type4 claim = args->claim; 7330 rfs4_client_t *cp; 7331 rfs4_openowner_t *oo; 7332 bool_t create; 7333 bool_t replay = FALSE; 7334 int can_reclaim; 7335 7336 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7337 OPEN4args *, args); 7338 7339 if (cs->vp == NULL) { 7340 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7341 goto end; 7342 } 7343 7344 /* 7345 * Need to check clientid and lease expiration first based on 7346 * error ordering and incrementing sequence id. 7347 */ 7348 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7349 if (cp == NULL) { 7350 *cs->statusp = resp->status = 7351 rfs4_check_clientid(&owner->clientid, 0); 7352 goto end; 7353 } 7354 7355 if (rfs4_lease_expired(cp)) { 7356 rfs4_client_close(cp); 7357 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7358 goto end; 7359 } 7360 can_reclaim = cp->rc_can_reclaim; 7361 7362 /* 7363 * Find the open_owner for use from this point forward. Take 7364 * care in updating the sequence id based on the type of error 7365 * being returned. 7366 */ 7367 retry: 7368 create = TRUE; 7369 oo = rfs4_findopenowner(owner, &create, args->seqid); 7370 if (oo == NULL) { 7371 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 7372 rfs4_client_rele(cp); 7373 goto end; 7374 } 7375 7376 /* Hold off access to the sequence space while the open is done */ 7377 rfs4_sw_enter(&oo->ro_sw); 7378 7379 /* 7380 * If the open_owner existed before at the server, then check 7381 * the sequence id. 7382 */ 7383 if (!create && !oo->ro_postpone_confirm) { 7384 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 7385 case NFS4_CHKSEQ_BAD: 7386 if ((args->seqid > oo->ro_open_seqid) && 7387 oo->ro_need_confirm) { 7388 rfs4_free_opens(oo, TRUE, FALSE); 7389 rfs4_sw_exit(&oo->ro_sw); 7390 rfs4_openowner_rele(oo); 7391 goto retry; 7392 } 7393 resp->status = NFS4ERR_BAD_SEQID; 7394 goto out; 7395 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7396 replay = TRUE; 7397 goto out; 7398 default: 7399 break; 7400 } 7401 7402 /* 7403 * Sequence was ok and open owner exists 7404 * check to see if we have yet to see an 7405 * open_confirm. 7406 */ 7407 if (oo->ro_need_confirm) { 7408 rfs4_free_opens(oo, TRUE, FALSE); 7409 rfs4_sw_exit(&oo->ro_sw); 7410 rfs4_openowner_rele(oo); 7411 goto retry; 7412 } 7413 } 7414 /* Grace only applies to regular-type OPENs */ 7415 if (rfs4_clnt_in_grace(cp) && 7416 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7417 *cs->statusp = resp->status = NFS4ERR_GRACE; 7418 goto out; 7419 } 7420 7421 /* 7422 * If previous state at the server existed then can_reclaim 7423 * will be set. If not reply NFS4ERR_NO_GRACE to the 7424 * client. 7425 */ 7426 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7427 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7428 goto out; 7429 } 7430 7431 7432 /* 7433 * Reject the open if the client has missed the grace period 7434 */ 7435 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7436 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7437 goto out; 7438 } 7439 7440 /* Couple of up-front bookkeeping items */ 7441 if (oo->ro_need_confirm) { 7442 /* 7443 * If this is a reclaim OPEN then we should not ask 7444 * for a confirmation of the open_owner per the 7445 * protocol specification. 7446 */ 7447 if (claim == CLAIM_PREVIOUS) 7448 oo->ro_need_confirm = FALSE; 7449 else 7450 resp->rflags |= OPEN4_RESULT_CONFIRM; 7451 } 7452 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7453 7454 /* 7455 * If there is an unshared filesystem mounted on this vnode, 7456 * do not allow to open/create in this directory. 7457 */ 7458 if (vn_ismntpt(cs->vp)) { 7459 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7460 goto out; 7461 } 7462 7463 /* 7464 * access must READ, WRITE, or BOTH. No access is invalid. 7465 * deny can be READ, WRITE, BOTH, or NONE. 7466 * bits not defined for access/deny are invalid. 7467 */ 7468 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7469 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7470 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7471 *cs->statusp = resp->status = NFS4ERR_INVAL; 7472 goto out; 7473 } 7474 7475 7476 /* 7477 * make sure attrset is zero before response is built. 7478 */ 7479 resp->attrset = 0; 7480 7481 switch (claim) { 7482 case CLAIM_NULL: 7483 rfs4_do_opennull(cs, req, args, oo, resp); 7484 break; 7485 case CLAIM_PREVIOUS: 7486 rfs4_do_openprev(cs, req, args, oo, resp); 7487 break; 7488 case CLAIM_DELEGATE_CUR: 7489 rfs4_do_opendelcur(cs, req, args, oo, resp); 7490 break; 7491 case CLAIM_DELEGATE_PREV: 7492 rfs4_do_opendelprev(cs, req, args, oo, resp); 7493 break; 7494 default: 7495 resp->status = NFS4ERR_INVAL; 7496 break; 7497 } 7498 7499 out: 7500 rfs4_client_rele(cp); 7501 7502 /* Catch sequence id handling here to make it a little easier */ 7503 switch (resp->status) { 7504 case NFS4ERR_BADXDR: 7505 case NFS4ERR_BAD_SEQID: 7506 case NFS4ERR_BAD_STATEID: 7507 case NFS4ERR_NOFILEHANDLE: 7508 case NFS4ERR_RESOURCE: 7509 case NFS4ERR_STALE_CLIENTID: 7510 case NFS4ERR_STALE_STATEID: 7511 /* 7512 * The protocol states that if any of these errors are 7513 * being returned, the sequence id should not be 7514 * incremented. Any other return requires an 7515 * increment. 7516 */ 7517 break; 7518 default: 7519 /* Always update the lease in this case */ 7520 rfs4_update_lease(oo->ro_client); 7521 7522 /* Regular response - copy the result */ 7523 if (!replay) 7524 rfs4_update_open_resp(oo, resop, &cs->fh); 7525 7526 /* 7527 * REPLAY case: Only if the previous response was OK 7528 * do we copy the filehandle. If not OK, no 7529 * filehandle to copy. 7530 */ 7531 if (replay == TRUE && 7532 resp->status == NFS4_OK && 7533 oo->ro_reply_fh.nfs_fh4_val) { 7534 /* 7535 * If this is a replay, we must restore the 7536 * current filehandle/vp to that of what was 7537 * returned originally. Try our best to do 7538 * it. 7539 */ 7540 nfs_fh4_fmt_t *fh_fmtp = 7541 (nfs_fh4_fmt_t *)oo->ro_reply_fh.nfs_fh4_val; 7542 7543 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7544 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7545 7546 if (cs->exi == NULL) { 7547 resp->status = NFS4ERR_STALE; 7548 goto finish; 7549 } 7550 7551 VN_RELE(cs->vp); 7552 7553 cs->vp = nfs4_fhtovp(&oo->ro_reply_fh, cs->exi, 7554 &resp->status); 7555 7556 if (cs->vp == NULL) 7557 goto finish; 7558 7559 nfs_fh4_copy(&oo->ro_reply_fh, &cs->fh); 7560 } 7561 7562 /* 7563 * If this was a replay, no need to update the 7564 * sequence id. If the open_owner was not created on 7565 * this pass, then update. The first use of an 7566 * open_owner will not bump the sequence id. 7567 */ 7568 if (replay == FALSE && !create) 7569 rfs4_update_open_sequence(oo); 7570 /* 7571 * If the client is receiving an error and the 7572 * open_owner needs to be confirmed, there is no way 7573 * to notify the client of this fact ignoring the fact 7574 * that the server has no method of returning a 7575 * stateid to confirm. Therefore, the server needs to 7576 * mark this open_owner in a way as to avoid the 7577 * sequence id checking the next time the client uses 7578 * this open_owner. 7579 */ 7580 if (resp->status != NFS4_OK && oo->ro_need_confirm) 7581 oo->ro_postpone_confirm = TRUE; 7582 /* 7583 * If OK response then clear the postpone flag and 7584 * reset the sequence id to keep in sync with the 7585 * client. 7586 */ 7587 if (resp->status == NFS4_OK && oo->ro_postpone_confirm) { 7588 oo->ro_postpone_confirm = FALSE; 7589 oo->ro_open_seqid = args->seqid; 7590 } 7591 break; 7592 } 7593 7594 finish: 7595 *cs->statusp = resp->status; 7596 7597 rfs4_sw_exit(&oo->ro_sw); 7598 rfs4_openowner_rele(oo); 7599 7600 end: 7601 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7602 OPEN4res *, resp); 7603 } 7604 7605 /*ARGSUSED*/ 7606 void 7607 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7608 struct svc_req *req, struct compound_state *cs) 7609 { 7610 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7611 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7612 rfs4_state_t *sp; 7613 nfsstat4 status; 7614 7615 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7616 OPEN_CONFIRM4args *, args); 7617 7618 if (cs->vp == NULL) { 7619 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7620 goto out; 7621 } 7622 7623 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7624 if (status != NFS4_OK) { 7625 *cs->statusp = resp->status = status; 7626 goto out; 7627 } 7628 7629 /* Ensure specified filehandle matches */ 7630 if (cs->vp != sp->rs_finfo->rf_vp) { 7631 rfs4_state_rele(sp); 7632 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7633 goto out; 7634 } 7635 7636 /* hold off other access to open_owner while we tinker */ 7637 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7638 7639 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7640 case NFS4_CHECK_STATEID_OKAY: 7641 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7642 resop) != 0) { 7643 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7644 break; 7645 } 7646 /* 7647 * If it is the appropriate stateid and determined to 7648 * be "OKAY" then this means that the stateid does not 7649 * need to be confirmed and the client is in error for 7650 * sending an OPEN_CONFIRM. 7651 */ 7652 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7653 break; 7654 case NFS4_CHECK_STATEID_OLD: 7655 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7656 break; 7657 case NFS4_CHECK_STATEID_BAD: 7658 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7659 break; 7660 case NFS4_CHECK_STATEID_EXPIRED: 7661 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7662 break; 7663 case NFS4_CHECK_STATEID_CLOSED: 7664 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7665 break; 7666 case NFS4_CHECK_STATEID_REPLAY: 7667 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7668 resop)) { 7669 case NFS4_CHKSEQ_OKAY: 7670 /* 7671 * This is replayed stateid; if seqid matches 7672 * next expected, then client is using wrong seqid. 7673 */ 7674 /* fall through */ 7675 case NFS4_CHKSEQ_BAD: 7676 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7677 break; 7678 case NFS4_CHKSEQ_REPLAY: 7679 /* 7680 * Note this case is the duplicate case so 7681 * resp->status is already set. 7682 */ 7683 *cs->statusp = resp->status; 7684 rfs4_update_lease(sp->rs_owner->ro_client); 7685 break; 7686 } 7687 break; 7688 case NFS4_CHECK_STATEID_UNCONFIRMED: 7689 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7690 resop) != NFS4_CHKSEQ_OKAY) { 7691 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7692 break; 7693 } 7694 *cs->statusp = resp->status = NFS4_OK; 7695 7696 next_stateid(&sp->rs_stateid); 7697 resp->open_stateid = sp->rs_stateid.stateid; 7698 sp->rs_owner->ro_need_confirm = FALSE; 7699 rfs4_update_lease(sp->rs_owner->ro_client); 7700 rfs4_update_open_sequence(sp->rs_owner); 7701 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7702 break; 7703 default: 7704 ASSERT(FALSE); 7705 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7706 break; 7707 } 7708 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7709 rfs4_state_rele(sp); 7710 7711 out: 7712 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7713 OPEN_CONFIRM4res *, resp); 7714 } 7715 7716 /*ARGSUSED*/ 7717 void 7718 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7719 struct svc_req *req, struct compound_state *cs) 7720 { 7721 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7722 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7723 uint32_t access = args->share_access; 7724 uint32_t deny = args->share_deny; 7725 nfsstat4 status; 7726 rfs4_state_t *sp; 7727 rfs4_file_t *fp; 7728 int fflags = 0; 7729 7730 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7731 OPEN_DOWNGRADE4args *, args); 7732 7733 if (cs->vp == NULL) { 7734 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7735 goto out; 7736 } 7737 7738 if (cs->vp->v_type != VREG) { 7739 *cs->statusp = resp->status = NFS4ERR_INVAL; 7740 return; 7741 } 7742 7743 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7744 if (status != NFS4_OK) { 7745 *cs->statusp = resp->status = status; 7746 goto out; 7747 } 7748 7749 /* Ensure specified filehandle matches */ 7750 if (cs->vp != sp->rs_finfo->rf_vp) { 7751 rfs4_state_rele(sp); 7752 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7753 goto out; 7754 } 7755 7756 /* hold off other access to open_owner while we tinker */ 7757 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7758 7759 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7760 case NFS4_CHECK_STATEID_OKAY: 7761 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7762 resop) != NFS4_CHKSEQ_OKAY) { 7763 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7764 goto end; 7765 } 7766 break; 7767 case NFS4_CHECK_STATEID_OLD: 7768 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7769 goto end; 7770 case NFS4_CHECK_STATEID_BAD: 7771 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7772 goto end; 7773 case NFS4_CHECK_STATEID_EXPIRED: 7774 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7775 goto end; 7776 case NFS4_CHECK_STATEID_CLOSED: 7777 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7778 goto end; 7779 case NFS4_CHECK_STATEID_UNCONFIRMED: 7780 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7781 goto end; 7782 case NFS4_CHECK_STATEID_REPLAY: 7783 /* Check the sequence id for the open owner */ 7784 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7785 resop)) { 7786 case NFS4_CHKSEQ_OKAY: 7787 /* 7788 * This is replayed stateid; if seqid matches 7789 * next expected, then client is using wrong seqid. 7790 */ 7791 /* fall through */ 7792 case NFS4_CHKSEQ_BAD: 7793 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7794 goto end; 7795 case NFS4_CHKSEQ_REPLAY: 7796 /* 7797 * Note this case is the duplicate case so 7798 * resp->status is already set. 7799 */ 7800 *cs->statusp = resp->status; 7801 rfs4_update_lease(sp->rs_owner->ro_client); 7802 goto end; 7803 } 7804 break; 7805 default: 7806 ASSERT(FALSE); 7807 break; 7808 } 7809 7810 rfs4_dbe_lock(sp->rs_dbe); 7811 /* 7812 * Check that the new access modes and deny modes are valid. 7813 * Check that no invalid bits are set. 7814 */ 7815 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7816 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7817 *cs->statusp = resp->status = NFS4ERR_INVAL; 7818 rfs4_update_open_sequence(sp->rs_owner); 7819 rfs4_dbe_unlock(sp->rs_dbe); 7820 goto end; 7821 } 7822 7823 /* 7824 * The new modes must be a subset of the current modes and 7825 * the access must specify at least one mode. To test that 7826 * the new mode is a subset of the current modes we bitwise 7827 * AND them together and check that the result equals the new 7828 * mode. For example: 7829 * New mode, access == R and current mode, sp->rs_open_access == RW 7830 * access & sp->rs_open_access == R == access, so the new access mode 7831 * is valid. Consider access == RW, sp->rs_open_access = R 7832 * access & sp->rs_open_access == R != access, so the new access mode 7833 * is invalid. 7834 */ 7835 if ((access & sp->rs_open_access) != access || 7836 (deny & sp->rs_open_deny) != deny || 7837 (access & 7838 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7839 *cs->statusp = resp->status = NFS4ERR_INVAL; 7840 rfs4_update_open_sequence(sp->rs_owner); 7841 rfs4_dbe_unlock(sp->rs_dbe); 7842 goto end; 7843 } 7844 7845 /* 7846 * Release any share locks associated with this stateID. 7847 * Strictly speaking, this violates the spec because the 7848 * spec effectively requires that open downgrade be atomic. 7849 * At present, fs_shrlock does not have this capability. 7850 */ 7851 (void) rfs4_unshare(sp); 7852 7853 status = rfs4_share(sp, access, deny); 7854 if (status != NFS4_OK) { 7855 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7856 rfs4_update_open_sequence(sp->rs_owner); 7857 rfs4_dbe_unlock(sp->rs_dbe); 7858 goto end; 7859 } 7860 7861 fp = sp->rs_finfo; 7862 rfs4_dbe_lock(fp->rf_dbe); 7863 7864 /* 7865 * If the current mode has deny read and the new mode 7866 * does not, decrement the number of deny read mode bits 7867 * and if it goes to zero turn off the deny read bit 7868 * on the file. 7869 */ 7870 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_READ) && 7871 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7872 fp->rf_deny_read--; 7873 if (fp->rf_deny_read == 0) 7874 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 7875 } 7876 7877 /* 7878 * If the current mode has deny write and the new mode 7879 * does not, decrement the number of deny write mode bits 7880 * and if it goes to zero turn off the deny write bit 7881 * on the file. 7882 */ 7883 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) && 7884 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 7885 fp->rf_deny_write--; 7886 if (fp->rf_deny_write == 0) 7887 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7888 } 7889 7890 /* 7891 * If the current mode has access read and the new mode 7892 * does not, decrement the number of access read mode bits 7893 * and if it goes to zero turn off the access read bit 7894 * on the file. set fflags to FREAD for the call to 7895 * vn_open_downgrade(). 7896 */ 7897 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) && 7898 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 7899 fp->rf_access_read--; 7900 if (fp->rf_access_read == 0) 7901 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 7902 fflags |= FREAD; 7903 } 7904 7905 /* 7906 * If the current mode has access write and the new mode 7907 * does not, decrement the number of access write mode bits 7908 * and if it goes to zero turn off the access write bit 7909 * on the file. set fflags to FWRITE for the call to 7910 * vn_open_downgrade(). 7911 */ 7912 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) && 7913 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7914 fp->rf_access_write--; 7915 if (fp->rf_access_write == 0) 7916 fp->rf_share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 7917 fflags |= FWRITE; 7918 } 7919 7920 /* Check that the file is still accessible */ 7921 ASSERT(fp->rf_share_access); 7922 7923 rfs4_dbe_unlock(fp->rf_dbe); 7924 7925 /* now set the new open access and deny modes */ 7926 sp->rs_open_access = access; 7927 sp->rs_open_deny = deny; 7928 7929 /* 7930 * we successfully downgraded the share lock, now we need to downgrade 7931 * the open. it is possible that the downgrade was only for a deny 7932 * mode and we have nothing else to do. 7933 */ 7934 if ((fflags & (FREAD|FWRITE)) != 0) 7935 vn_open_downgrade(cs->vp, fflags); 7936 7937 /* Update the stateid */ 7938 next_stateid(&sp->rs_stateid); 7939 resp->open_stateid = sp->rs_stateid.stateid; 7940 7941 rfs4_dbe_unlock(sp->rs_dbe); 7942 7943 *cs->statusp = resp->status = NFS4_OK; 7944 /* Update the lease */ 7945 rfs4_update_lease(sp->rs_owner->ro_client); 7946 /* And the sequence */ 7947 rfs4_update_open_sequence(sp->rs_owner); 7948 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7949 7950 end: 7951 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7952 rfs4_state_rele(sp); 7953 out: 7954 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 7955 OPEN_DOWNGRADE4res *, resp); 7956 } 7957 7958 /* 7959 * The logic behind this function is detailed in the NFSv4 RFC in the 7960 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 7961 * that section for explicit guidance to server behavior for 7962 * SETCLIENTID. 7963 */ 7964 void 7965 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 7966 struct svc_req *req, struct compound_state *cs) 7967 { 7968 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 7969 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 7970 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 7971 rfs4_clntip_t *ci; 7972 bool_t create; 7973 char *addr, *netid; 7974 int len; 7975 7976 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 7977 SETCLIENTID4args *, args); 7978 retry: 7979 newcp = cp_confirmed = cp_unconfirmed = NULL; 7980 7981 /* 7982 * Save the caller's IP address 7983 */ 7984 args->client.cl_addr = 7985 (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 7986 7987 /* 7988 * Record if it is a Solaris client that cannot handle referrals. 7989 */ 7990 if (strstr(args->client.id_val, "Solaris") && 7991 !strstr(args->client.id_val, "+referrals")) { 7992 /* Add a "yes, it's downrev" record */ 7993 create = TRUE; 7994 ci = rfs4_find_clntip(args->client.cl_addr, &create); 7995 ASSERT(ci != NULL); 7996 rfs4_dbe_rele(ci->ri_dbe); 7997 } else { 7998 /* Remove any previous record */ 7999 rfs4_invalidate_clntip(args->client.cl_addr); 8000 } 8001 8002 /* 8003 * In search of an EXISTING client matching the incoming 8004 * request to establish a new client identifier at the server 8005 */ 8006 create = TRUE; 8007 cp = rfs4_findclient(&args->client, &create, NULL); 8008 8009 /* Should never happen */ 8010 ASSERT(cp != NULL); 8011 8012 if (cp == NULL) { 8013 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8014 goto out; 8015 } 8016 8017 /* 8018 * Easiest case. Client identifier is newly created and is 8019 * unconfirmed. Also note that for this case, no other 8020 * entries exist for the client identifier. Nothing else to 8021 * check. Just setup the response and respond. 8022 */ 8023 if (create) { 8024 *cs->statusp = res->status = NFS4_OK; 8025 res->SETCLIENTID4res_u.resok4.clientid = cp->rc_clientid; 8026 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8027 cp->rc_confirm_verf; 8028 /* Setup callback information; CB_NULL confirmation later */ 8029 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 8030 8031 rfs4_client_rele(cp); 8032 goto out; 8033 } 8034 8035 /* 8036 * An existing, confirmed client may exist but it may not have 8037 * been active for at least one lease period. If so, then 8038 * "close" the client and create a new client identifier 8039 */ 8040 if (rfs4_lease_expired(cp)) { 8041 rfs4_client_close(cp); 8042 goto retry; 8043 } 8044 8045 if (cp->rc_need_confirm == TRUE) 8046 cp_unconfirmed = cp; 8047 else 8048 cp_confirmed = cp; 8049 8050 cp = NULL; 8051 8052 /* 8053 * We have a confirmed client, now check for an 8054 * unconfimred entry 8055 */ 8056 if (cp_confirmed) { 8057 /* If creds don't match then client identifier is inuse */ 8058 if (!creds_ok(cp_confirmed->rc_cr_set, req, cs)) { 8059 rfs4_cbinfo_t *cbp; 8060 /* 8061 * Some one else has established this client 8062 * id. Try and say * who they are. We will use 8063 * the call back address supplied by * the 8064 * first client. 8065 */ 8066 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8067 8068 addr = netid = NULL; 8069 8070 cbp = &cp_confirmed->rc_cbinfo; 8071 if (cbp->cb_callback.cb_location.r_addr && 8072 cbp->cb_callback.cb_location.r_netid) { 8073 cb_client4 *cbcp = &cbp->cb_callback; 8074 8075 len = strlen(cbcp->cb_location.r_addr)+1; 8076 addr = kmem_alloc(len, KM_SLEEP); 8077 bcopy(cbcp->cb_location.r_addr, addr, len); 8078 len = strlen(cbcp->cb_location.r_netid)+1; 8079 netid = kmem_alloc(len, KM_SLEEP); 8080 bcopy(cbcp->cb_location.r_netid, netid, len); 8081 } 8082 8083 res->SETCLIENTID4res_u.client_using.r_addr = addr; 8084 res->SETCLIENTID4res_u.client_using.r_netid = netid; 8085 8086 rfs4_client_rele(cp_confirmed); 8087 } 8088 8089 /* 8090 * Confirmed, creds match, and verifier matches; must 8091 * be an update of the callback info 8092 */ 8093 if (cp_confirmed->rc_nfs_client.verifier == 8094 args->client.verifier) { 8095 /* Setup callback information */ 8096 rfs4_client_setcb(cp_confirmed, &args->callback, 8097 args->callback_ident); 8098 8099 /* everything okay -- move ahead */ 8100 *cs->statusp = res->status = NFS4_OK; 8101 res->SETCLIENTID4res_u.resok4.clientid = 8102 cp_confirmed->rc_clientid; 8103 8104 /* update the confirm_verifier and return it */ 8105 rfs4_client_scv_next(cp_confirmed); 8106 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8107 cp_confirmed->rc_confirm_verf; 8108 8109 rfs4_client_rele(cp_confirmed); 8110 goto out; 8111 } 8112 8113 /* 8114 * Creds match but the verifier doesn't. Must search 8115 * for an unconfirmed client that would be replaced by 8116 * this request. 8117 */ 8118 create = FALSE; 8119 cp_unconfirmed = rfs4_findclient(&args->client, &create, 8120 cp_confirmed); 8121 } 8122 8123 /* 8124 * At this point, we have taken care of the brand new client 8125 * struct, INUSE case, update of an existing, and confirmed 8126 * client struct. 8127 */ 8128 8129 /* 8130 * check to see if things have changed while we originally 8131 * picked up the client struct. If they have, then return and 8132 * retry the processing of this SETCLIENTID request. 8133 */ 8134 if (cp_unconfirmed) { 8135 rfs4_dbe_lock(cp_unconfirmed->rc_dbe); 8136 if (!cp_unconfirmed->rc_need_confirm) { 8137 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8138 rfs4_client_rele(cp_unconfirmed); 8139 if (cp_confirmed) 8140 rfs4_client_rele(cp_confirmed); 8141 goto retry; 8142 } 8143 /* do away with the old unconfirmed one */ 8144 rfs4_dbe_invalidate(cp_unconfirmed->rc_dbe); 8145 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8146 rfs4_client_rele(cp_unconfirmed); 8147 cp_unconfirmed = NULL; 8148 } 8149 8150 /* 8151 * This search will temporarily hide the confirmed client 8152 * struct while a new client struct is created as the 8153 * unconfirmed one. 8154 */ 8155 create = TRUE; 8156 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 8157 8158 ASSERT(newcp != NULL); 8159 8160 if (newcp == NULL) { 8161 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8162 rfs4_client_rele(cp_confirmed); 8163 goto out; 8164 } 8165 8166 /* 8167 * If one was not created, then a similar request must be in 8168 * process so release and start over with this one 8169 */ 8170 if (create != TRUE) { 8171 rfs4_client_rele(newcp); 8172 if (cp_confirmed) 8173 rfs4_client_rele(cp_confirmed); 8174 goto retry; 8175 } 8176 8177 *cs->statusp = res->status = NFS4_OK; 8178 res->SETCLIENTID4res_u.resok4.clientid = newcp->rc_clientid; 8179 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8180 newcp->rc_confirm_verf; 8181 /* Setup callback information; CB_NULL confirmation later */ 8182 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 8183 8184 newcp->rc_cp_confirmed = cp_confirmed; 8185 8186 rfs4_client_rele(newcp); 8187 8188 out: 8189 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 8190 SETCLIENTID4res *, res); 8191 } 8192 8193 /*ARGSUSED*/ 8194 void 8195 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 8196 struct svc_req *req, struct compound_state *cs) 8197 { 8198 SETCLIENTID_CONFIRM4args *args = 8199 &argop->nfs_argop4_u.opsetclientid_confirm; 8200 SETCLIENTID_CONFIRM4res *res = 8201 &resop->nfs_resop4_u.opsetclientid_confirm; 8202 rfs4_client_t *cp, *cptoclose = NULL; 8203 8204 DTRACE_NFSV4_2(op__setclientid__confirm__start, 8205 struct compound_state *, cs, 8206 SETCLIENTID_CONFIRM4args *, args); 8207 8208 *cs->statusp = res->status = NFS4_OK; 8209 8210 cp = rfs4_findclient_by_id(args->clientid, TRUE); 8211 8212 if (cp == NULL) { 8213 *cs->statusp = res->status = 8214 rfs4_check_clientid(&args->clientid, 1); 8215 goto out; 8216 } 8217 8218 if (!creds_ok(cp, req, cs)) { 8219 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8220 rfs4_client_rele(cp); 8221 goto out; 8222 } 8223 8224 /* If the verifier doesn't match, the record doesn't match */ 8225 if (cp->rc_confirm_verf != args->setclientid_confirm) { 8226 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8227 rfs4_client_rele(cp); 8228 goto out; 8229 } 8230 8231 rfs4_dbe_lock(cp->rc_dbe); 8232 cp->rc_need_confirm = FALSE; 8233 if (cp->rc_cp_confirmed) { 8234 cptoclose = cp->rc_cp_confirmed; 8235 cptoclose->rc_ss_remove = 1; 8236 cp->rc_cp_confirmed = NULL; 8237 } 8238 8239 /* 8240 * Update the client's associated server instance, if it's changed 8241 * since the client was created. 8242 */ 8243 if (rfs4_servinst(cp) != rfs4_cur_servinst) 8244 rfs4_servinst_assign(cp, rfs4_cur_servinst); 8245 8246 /* 8247 * Record clientid in stable storage. 8248 * Must be done after server instance has been assigned. 8249 */ 8250 rfs4_ss_clid(cp); 8251 8252 rfs4_dbe_unlock(cp->rc_dbe); 8253 8254 if (cptoclose) 8255 /* don't need to rele, client_close does it */ 8256 rfs4_client_close(cptoclose); 8257 8258 /* If needed, initiate CB_NULL call for callback path */ 8259 rfs4_deleg_cb_check(cp); 8260 rfs4_update_lease(cp); 8261 8262 /* 8263 * Check to see if client can perform reclaims 8264 */ 8265 rfs4_ss_chkclid(cp); 8266 8267 rfs4_client_rele(cp); 8268 8269 out: 8270 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8271 struct compound_state *, cs, 8272 SETCLIENTID_CONFIRM4 *, res); 8273 } 8274 8275 8276 /*ARGSUSED*/ 8277 void 8278 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8279 struct svc_req *req, struct compound_state *cs) 8280 { 8281 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8282 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8283 rfs4_state_t *sp; 8284 nfsstat4 status; 8285 8286 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8287 CLOSE4args *, args); 8288 8289 if (cs->vp == NULL) { 8290 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8291 goto out; 8292 } 8293 8294 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8295 if (status != NFS4_OK) { 8296 *cs->statusp = resp->status = status; 8297 goto out; 8298 } 8299 8300 /* Ensure specified filehandle matches */ 8301 if (cs->vp != sp->rs_finfo->rf_vp) { 8302 rfs4_state_rele(sp); 8303 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8304 goto out; 8305 } 8306 8307 /* hold off other access to open_owner while we tinker */ 8308 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8309 8310 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 8311 case NFS4_CHECK_STATEID_OKAY: 8312 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8313 resop) != NFS4_CHKSEQ_OKAY) { 8314 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8315 goto end; 8316 } 8317 break; 8318 case NFS4_CHECK_STATEID_OLD: 8319 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8320 goto end; 8321 case NFS4_CHECK_STATEID_BAD: 8322 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8323 goto end; 8324 case NFS4_CHECK_STATEID_EXPIRED: 8325 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8326 goto end; 8327 case NFS4_CHECK_STATEID_CLOSED: 8328 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8329 goto end; 8330 case NFS4_CHECK_STATEID_UNCONFIRMED: 8331 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8332 goto end; 8333 case NFS4_CHECK_STATEID_REPLAY: 8334 /* Check the sequence id for the open owner */ 8335 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8336 resop)) { 8337 case NFS4_CHKSEQ_OKAY: 8338 /* 8339 * This is replayed stateid; if seqid matches 8340 * next expected, then client is using wrong seqid. 8341 */ 8342 /* FALL THROUGH */ 8343 case NFS4_CHKSEQ_BAD: 8344 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8345 goto end; 8346 case NFS4_CHKSEQ_REPLAY: 8347 /* 8348 * Note this case is the duplicate case so 8349 * resp->status is already set. 8350 */ 8351 *cs->statusp = resp->status; 8352 rfs4_update_lease(sp->rs_owner->ro_client); 8353 goto end; 8354 } 8355 break; 8356 default: 8357 ASSERT(FALSE); 8358 break; 8359 } 8360 8361 rfs4_dbe_lock(sp->rs_dbe); 8362 8363 /* Update the stateid. */ 8364 next_stateid(&sp->rs_stateid); 8365 resp->open_stateid = sp->rs_stateid.stateid; 8366 8367 rfs4_dbe_unlock(sp->rs_dbe); 8368 8369 rfs4_update_lease(sp->rs_owner->ro_client); 8370 rfs4_update_open_sequence(sp->rs_owner); 8371 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8372 8373 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8374 8375 *cs->statusp = resp->status = status; 8376 8377 end: 8378 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8379 rfs4_state_rele(sp); 8380 out: 8381 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8382 CLOSE4res *, resp); 8383 } 8384 8385 /* 8386 * Manage the counts on the file struct and close all file locks 8387 */ 8388 /*ARGSUSED*/ 8389 void 8390 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8391 bool_t close_of_client) 8392 { 8393 rfs4_file_t *fp = sp->rs_finfo; 8394 rfs4_lo_state_t *lsp; 8395 int fflags = 0; 8396 8397 /* 8398 * If this call is part of the larger closing down of client 8399 * state then it is just easier to release all locks 8400 * associated with this client instead of going through each 8401 * individual file and cleaning locks there. 8402 */ 8403 if (close_of_client) { 8404 if (sp->rs_owner->ro_client->rc_unlksys_completed == FALSE && 8405 !list_is_empty(&sp->rs_lostatelist) && 8406 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) { 8407 /* Is the PxFS kernel module loaded? */ 8408 if (lm_remove_file_locks != NULL) { 8409 int new_sysid; 8410 8411 /* Encode the cluster nodeid in new sysid */ 8412 new_sysid = sp->rs_owner->ro_client->rc_sysidt; 8413 lm_set_nlmid_flk(&new_sysid); 8414 8415 /* 8416 * This PxFS routine removes file locks for a 8417 * client over all nodes of a cluster. 8418 */ 8419 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8420 "lm_remove_file_locks(sysid=0x%x)\n", 8421 new_sysid)); 8422 (*lm_remove_file_locks)(new_sysid); 8423 } else { 8424 struct flock64 flk; 8425 8426 /* Release all locks for this client */ 8427 flk.l_type = F_UNLKSYS; 8428 flk.l_whence = 0; 8429 flk.l_start = 0; 8430 flk.l_len = 0; 8431 flk.l_sysid = 8432 sp->rs_owner->ro_client->rc_sysidt; 8433 flk.l_pid = 0; 8434 (void) VOP_FRLOCK(sp->rs_finfo->rf_vp, F_SETLK, 8435 &flk, F_REMOTELOCK | FREAD | FWRITE, 8436 (u_offset_t)0, NULL, CRED(), NULL); 8437 } 8438 8439 sp->rs_owner->ro_client->rc_unlksys_completed = TRUE; 8440 } 8441 } 8442 8443 /* 8444 * Release all locks on this file by this lock owner or at 8445 * least mark the locks as having been released 8446 */ 8447 for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL; 8448 lsp = list_next(&sp->rs_lostatelist, lsp)) { 8449 lsp->rls_locks_cleaned = TRUE; 8450 8451 /* Was this already taken care of above? */ 8452 if (!close_of_client && 8453 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8454 (void) cleanlocks(sp->rs_finfo->rf_vp, 8455 lsp->rls_locker->rl_pid, 8456 lsp->rls_locker->rl_client->rc_sysidt); 8457 } 8458 8459 /* 8460 * Release any shrlocks associated with this open state ID. 8461 * This must be done before the rfs4_state gets marked closed. 8462 */ 8463 if (sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8464 (void) rfs4_unshare(sp); 8465 8466 if (sp->rs_open_access) { 8467 rfs4_dbe_lock(fp->rf_dbe); 8468 8469 /* 8470 * Decrement the count for each access and deny bit that this 8471 * state has contributed to the file. 8472 * If the file counts go to zero 8473 * clear the appropriate bit in the appropriate mask. 8474 */ 8475 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) { 8476 fp->rf_access_read--; 8477 fflags |= FREAD; 8478 if (fp->rf_access_read == 0) 8479 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8480 } 8481 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) { 8482 fp->rf_access_write--; 8483 fflags |= FWRITE; 8484 if (fp->rf_access_write == 0) 8485 fp->rf_share_access &= 8486 ~OPEN4_SHARE_ACCESS_WRITE; 8487 } 8488 if (sp->rs_open_deny & OPEN4_SHARE_DENY_READ) { 8489 fp->rf_deny_read--; 8490 if (fp->rf_deny_read == 0) 8491 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8492 } 8493 if (sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) { 8494 fp->rf_deny_write--; 8495 if (fp->rf_deny_write == 0) 8496 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8497 } 8498 8499 (void) VOP_CLOSE(fp->rf_vp, fflags, 1, (offset_t)0, cr, NULL); 8500 8501 rfs4_dbe_unlock(fp->rf_dbe); 8502 8503 sp->rs_open_access = 0; 8504 sp->rs_open_deny = 0; 8505 } 8506 } 8507 8508 /* 8509 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8510 */ 8511 static nfsstat4 8512 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8513 { 8514 rfs4_lockowner_t *lo; 8515 rfs4_client_t *cp; 8516 uint32_t len; 8517 8518 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8519 if (lo != NULL) { 8520 cp = lo->rl_client; 8521 if (rfs4_lease_expired(cp)) { 8522 rfs4_lockowner_rele(lo); 8523 rfs4_dbe_hold(cp->rc_dbe); 8524 rfs4_client_close(cp); 8525 return (NFS4ERR_EXPIRED); 8526 } 8527 dp->owner.clientid = lo->rl_owner.clientid; 8528 len = lo->rl_owner.owner_len; 8529 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8530 bcopy(lo->rl_owner.owner_val, dp->owner.owner_val, len); 8531 dp->owner.owner_len = len; 8532 rfs4_lockowner_rele(lo); 8533 goto finish; 8534 } 8535 8536 /* 8537 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8538 * of the client id contain the boot time for a NFS4 lock. So we 8539 * fabricate and identity by setting clientid to the sysid, and 8540 * the lock owner to the pid. 8541 */ 8542 dp->owner.clientid = flk->l_sysid; 8543 len = sizeof (pid_t); 8544 dp->owner.owner_len = len; 8545 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8546 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8547 finish: 8548 dp->offset = flk->l_start; 8549 dp->length = flk->l_len; 8550 8551 if (flk->l_type == F_RDLCK) 8552 dp->locktype = READ_LT; 8553 else if (flk->l_type == F_WRLCK) 8554 dp->locktype = WRITE_LT; 8555 else 8556 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8557 8558 return (NFS4_OK); 8559 } 8560 8561 static int 8562 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8563 { 8564 int error; 8565 struct flock64 flk; 8566 int i; 8567 clock_t delaytime; 8568 int cmd; 8569 8570 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8571 retry: 8572 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8573 8574 for (i = 0; i < rfs4_maxlock_tries; i++) { 8575 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8576 error = VOP_FRLOCK(vp, cmd, 8577 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8578 8579 if (error != EAGAIN && error != EACCES) 8580 break; 8581 8582 if (i < rfs4_maxlock_tries - 1) { 8583 delay(delaytime); 8584 delaytime *= 2; 8585 } 8586 } 8587 8588 if (error == EAGAIN || error == EACCES) { 8589 /* Get the owner of the lock */ 8590 flk = *flock; 8591 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8592 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 8593 (u_offset_t)0, NULL, cred, NULL) == 0) { 8594 if (flk.l_type == F_UNLCK) { 8595 /* No longer locked, retry */ 8596 goto retry; 8597 } 8598 *flock = flk; 8599 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8600 F_GETLK, &flk); 8601 } 8602 } 8603 8604 return (error); 8605 } 8606 8607 /*ARGSUSED*/ 8608 static nfsstat4 8609 rfs4_do_lock(rfs4_lo_state_t *lsp, nfs_lock_type4 locktype, 8610 offset4 offset, length4 length, cred_t *cred, nfs_resop4 *resop) 8611 { 8612 nfsstat4 status; 8613 rfs4_lockowner_t *lo = lsp->rls_locker; 8614 rfs4_state_t *sp = lsp->rls_state; 8615 struct flock64 flock; 8616 int16_t ltype; 8617 int flag; 8618 int error; 8619 sysid_t sysid; 8620 LOCK4res *lres; 8621 8622 if (rfs4_lease_expired(lo->rl_client)) { 8623 return (NFS4ERR_EXPIRED); 8624 } 8625 8626 if ((status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 8627 return (status); 8628 8629 /* Check for zero length. To lock to end of file use all ones for V4 */ 8630 if (length == 0) 8631 return (NFS4ERR_INVAL); 8632 else if (length == (length4)(~0)) 8633 length = 0; /* Posix to end of file */ 8634 8635 retry: 8636 rfs4_dbe_lock(sp->rs_dbe); 8637 if (sp->rs_closed) { 8638 rfs4_dbe_unlock(sp->rs_dbe); 8639 return (NFS4ERR_OLD_STATEID); 8640 } 8641 8642 if (resop->resop != OP_LOCKU) { 8643 switch (locktype) { 8644 case READ_LT: 8645 case READW_LT: 8646 if ((sp->rs_share_access 8647 & OPEN4_SHARE_ACCESS_READ) == 0) { 8648 rfs4_dbe_unlock(sp->rs_dbe); 8649 8650 return (NFS4ERR_OPENMODE); 8651 } 8652 ltype = F_RDLCK; 8653 break; 8654 case WRITE_LT: 8655 case WRITEW_LT: 8656 if ((sp->rs_share_access 8657 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8658 rfs4_dbe_unlock(sp->rs_dbe); 8659 8660 return (NFS4ERR_OPENMODE); 8661 } 8662 ltype = F_WRLCK; 8663 break; 8664 } 8665 } else 8666 ltype = F_UNLCK; 8667 8668 flock.l_type = ltype; 8669 flock.l_whence = 0; /* SEEK_SET */ 8670 flock.l_start = offset; 8671 flock.l_len = length; 8672 flock.l_sysid = sysid; 8673 flock.l_pid = lsp->rls_locker->rl_pid; 8674 8675 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8676 if (flock.l_len < 0 || flock.l_start < 0) { 8677 rfs4_dbe_unlock(sp->rs_dbe); 8678 return (NFS4ERR_INVAL); 8679 } 8680 8681 /* 8682 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8683 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8684 */ 8685 flag = (int)sp->rs_share_access | F_REMOTELOCK; 8686 8687 error = setlock(sp->rs_finfo->rf_vp, &flock, flag, cred); 8688 if (error == 0) { 8689 rfs4_dbe_lock(lsp->rls_dbe); 8690 next_stateid(&lsp->rls_lockid); 8691 rfs4_dbe_unlock(lsp->rls_dbe); 8692 } 8693 8694 rfs4_dbe_unlock(sp->rs_dbe); 8695 8696 /* 8697 * N.B. We map error values to nfsv4 errors. This is differrent 8698 * than puterrno4 routine. 8699 */ 8700 switch (error) { 8701 case 0: 8702 status = NFS4_OK; 8703 break; 8704 case EAGAIN: 8705 case EACCES: /* Old value */ 8706 /* Can only get here if op is OP_LOCK */ 8707 ASSERT(resop->resop == OP_LOCK); 8708 lres = &resop->nfs_resop4_u.oplock; 8709 status = NFS4ERR_DENIED; 8710 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8711 == NFS4ERR_EXPIRED) 8712 goto retry; 8713 break; 8714 case ENOLCK: 8715 status = NFS4ERR_DELAY; 8716 break; 8717 case EOVERFLOW: 8718 status = NFS4ERR_INVAL; 8719 break; 8720 case EINVAL: 8721 status = NFS4ERR_NOTSUPP; 8722 break; 8723 default: 8724 status = NFS4ERR_SERVERFAULT; 8725 break; 8726 } 8727 8728 return (status); 8729 } 8730 8731 /*ARGSUSED*/ 8732 void 8733 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8734 struct svc_req *req, struct compound_state *cs) 8735 { 8736 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8737 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8738 nfsstat4 status; 8739 stateid4 *stateid; 8740 rfs4_lockowner_t *lo; 8741 rfs4_client_t *cp; 8742 rfs4_state_t *sp = NULL; 8743 rfs4_lo_state_t *lsp = NULL; 8744 bool_t ls_sw_held = FALSE; 8745 bool_t create = TRUE; 8746 bool_t lcreate = TRUE; 8747 bool_t dup_lock = FALSE; 8748 int rc; 8749 8750 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8751 LOCK4args *, args); 8752 8753 if (cs->vp == NULL) { 8754 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8755 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8756 cs, LOCK4res *, resp); 8757 return; 8758 } 8759 8760 if (args->locker.new_lock_owner) { 8761 /* Create a new lockowner for this instance */ 8762 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8763 8764 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8765 8766 stateid = &olo->open_stateid; 8767 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8768 if (status != NFS4_OK) { 8769 NFS4_DEBUG(rfs4_debug, 8770 (CE_NOTE, "Get state failed in lock %d", status)); 8771 *cs->statusp = resp->status = status; 8772 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8773 cs, LOCK4res *, resp); 8774 return; 8775 } 8776 8777 /* Ensure specified filehandle matches */ 8778 if (cs->vp != sp->rs_finfo->rf_vp) { 8779 rfs4_state_rele(sp); 8780 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8781 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8782 cs, LOCK4res *, resp); 8783 return; 8784 } 8785 8786 /* hold off other access to open_owner while we tinker */ 8787 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8788 8789 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8790 case NFS4_CHECK_STATEID_OLD: 8791 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8792 goto end; 8793 case NFS4_CHECK_STATEID_BAD: 8794 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8795 goto end; 8796 case NFS4_CHECK_STATEID_EXPIRED: 8797 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8798 goto end; 8799 case NFS4_CHECK_STATEID_UNCONFIRMED: 8800 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8801 goto end; 8802 case NFS4_CHECK_STATEID_CLOSED: 8803 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8804 goto end; 8805 case NFS4_CHECK_STATEID_OKAY: 8806 case NFS4_CHECK_STATEID_REPLAY: 8807 switch (rfs4_check_olo_seqid(olo->open_seqid, 8808 sp->rs_owner, resop)) { 8809 case NFS4_CHKSEQ_OKAY: 8810 if (rc == NFS4_CHECK_STATEID_OKAY) 8811 break; 8812 /* 8813 * This is replayed stateid; if seqid 8814 * matches next expected, then client 8815 * is using wrong seqid. 8816 */ 8817 /* FALLTHROUGH */ 8818 case NFS4_CHKSEQ_BAD: 8819 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8820 goto end; 8821 case NFS4_CHKSEQ_REPLAY: 8822 /* This is a duplicate LOCK request */ 8823 dup_lock = TRUE; 8824 8825 /* 8826 * For a duplicate we do not want to 8827 * create a new lockowner as it should 8828 * already exist. 8829 * Turn off the lockowner create flag. 8830 */ 8831 lcreate = FALSE; 8832 } 8833 break; 8834 } 8835 8836 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8837 if (lo == NULL) { 8838 NFS4_DEBUG(rfs4_debug, 8839 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8840 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8841 goto end; 8842 } 8843 8844 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8845 if (lsp == NULL) { 8846 rfs4_update_lease(sp->rs_owner->ro_client); 8847 /* 8848 * Only update theh open_seqid if this is not 8849 * a duplicate request 8850 */ 8851 if (dup_lock == FALSE) { 8852 rfs4_update_open_sequence(sp->rs_owner); 8853 } 8854 8855 NFS4_DEBUG(rfs4_debug, 8856 (CE_NOTE, "rfs4_op_lock: no state")); 8857 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8858 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8859 rfs4_lockowner_rele(lo); 8860 goto end; 8861 } 8862 8863 /* 8864 * This is the new_lock_owner branch and the client is 8865 * supposed to be associating a new lock_owner with 8866 * the open file at this point. If we find that a 8867 * lock_owner/state association already exists and a 8868 * successful LOCK request was returned to the client, 8869 * an error is returned to the client since this is 8870 * not appropriate. The client should be using the 8871 * existing lock_owner branch. 8872 */ 8873 if (dup_lock == FALSE && create == FALSE) { 8874 if (lsp->rls_lock_completed == TRUE) { 8875 *cs->statusp = 8876 resp->status = NFS4ERR_BAD_SEQID; 8877 rfs4_lockowner_rele(lo); 8878 goto end; 8879 } 8880 } 8881 8882 rfs4_update_lease(sp->rs_owner->ro_client); 8883 8884 /* 8885 * Only update theh open_seqid if this is not 8886 * a duplicate request 8887 */ 8888 if (dup_lock == FALSE) { 8889 rfs4_update_open_sequence(sp->rs_owner); 8890 } 8891 8892 /* 8893 * If this is a duplicate lock request, just copy the 8894 * previously saved reply and return. 8895 */ 8896 if (dup_lock == TRUE) { 8897 /* verify that lock_seqid's match */ 8898 if (lsp->rls_seqid != olo->lock_seqid) { 8899 NFS4_DEBUG(rfs4_debug, 8900 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 8901 "lsp->seqid=%d old->seqid=%d", 8902 lsp->rls_seqid, olo->lock_seqid)); 8903 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8904 } else { 8905 rfs4_copy_reply(resop, &lsp->rls_reply); 8906 /* 8907 * Make sure to copy the just 8908 * retrieved reply status into the 8909 * overall compound status 8910 */ 8911 *cs->statusp = resp->status; 8912 } 8913 rfs4_lockowner_rele(lo); 8914 goto end; 8915 } 8916 8917 rfs4_dbe_lock(lsp->rls_dbe); 8918 8919 /* Make sure to update the lock sequence id */ 8920 lsp->rls_seqid = olo->lock_seqid; 8921 8922 NFS4_DEBUG(rfs4_debug, 8923 (CE_NOTE, "Lock seqid established as %d", lsp->rls_seqid)); 8924 8925 /* 8926 * This is used to signify the newly created lockowner 8927 * stateid and its sequence number. The checks for 8928 * sequence number and increment don't occur on the 8929 * very first lock request for a lockowner. 8930 */ 8931 lsp->rls_skip_seqid_check = TRUE; 8932 8933 /* hold off other access to lsp while we tinker */ 8934 rfs4_sw_enter(&lsp->rls_sw); 8935 ls_sw_held = TRUE; 8936 8937 rfs4_dbe_unlock(lsp->rls_dbe); 8938 8939 rfs4_lockowner_rele(lo); 8940 } else { 8941 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 8942 /* get lsp and hold the lock on the underlying file struct */ 8943 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 8944 != NFS4_OK) { 8945 *cs->statusp = resp->status = status; 8946 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8947 cs, LOCK4res *, resp); 8948 return; 8949 } 8950 create = FALSE; /* We didn't create lsp */ 8951 8952 /* Ensure specified filehandle matches */ 8953 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 8954 rfs4_lo_state_rele(lsp, TRUE); 8955 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8956 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8957 cs, LOCK4res *, resp); 8958 return; 8959 } 8960 8961 /* hold off other access to lsp while we tinker */ 8962 rfs4_sw_enter(&lsp->rls_sw); 8963 ls_sw_held = TRUE; 8964 8965 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8966 /* 8967 * The stateid looks like it was okay (expected to be 8968 * the next one) 8969 */ 8970 case NFS4_CHECK_STATEID_OKAY: 8971 /* 8972 * The sequence id is now checked. Determine 8973 * if this is a replay or if it is in the 8974 * expected (next) sequence. In the case of a 8975 * replay, there are two replay conditions 8976 * that may occur. The first is the normal 8977 * condition where a LOCK is done with a 8978 * NFS4_OK response and the stateid is 8979 * updated. That case is handled below when 8980 * the stateid is identified as a REPLAY. The 8981 * second is the case where an error is 8982 * returned, like NFS4ERR_DENIED, and the 8983 * sequence number is updated but the stateid 8984 * is not updated. This second case is dealt 8985 * with here. So it may seem odd that the 8986 * stateid is okay but the sequence id is a 8987 * replay but it is okay. 8988 */ 8989 switch (rfs4_check_lock_seqid( 8990 args->locker.locker4_u.lock_owner.lock_seqid, 8991 lsp, resop)) { 8992 case NFS4_CHKSEQ_REPLAY: 8993 if (resp->status != NFS4_OK) { 8994 /* 8995 * Here is our replay and need 8996 * to verify that the last 8997 * response was an error. 8998 */ 8999 *cs->statusp = resp->status; 9000 goto end; 9001 } 9002 /* 9003 * This is done since the sequence id 9004 * looked like a replay but it didn't 9005 * pass our check so a BAD_SEQID is 9006 * returned as a result. 9007 */ 9008 /*FALLTHROUGH*/ 9009 case NFS4_CHKSEQ_BAD: 9010 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9011 goto end; 9012 case NFS4_CHKSEQ_OKAY: 9013 /* Everything looks okay move ahead */ 9014 break; 9015 } 9016 break; 9017 case NFS4_CHECK_STATEID_OLD: 9018 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9019 goto end; 9020 case NFS4_CHECK_STATEID_BAD: 9021 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9022 goto end; 9023 case NFS4_CHECK_STATEID_EXPIRED: 9024 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9025 goto end; 9026 case NFS4_CHECK_STATEID_CLOSED: 9027 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9028 goto end; 9029 case NFS4_CHECK_STATEID_REPLAY: 9030 switch (rfs4_check_lock_seqid( 9031 args->locker.locker4_u.lock_owner.lock_seqid, 9032 lsp, resop)) { 9033 case NFS4_CHKSEQ_OKAY: 9034 /* 9035 * This is a replayed stateid; if 9036 * seqid matches the next expected, 9037 * then client is using wrong seqid. 9038 */ 9039 case NFS4_CHKSEQ_BAD: 9040 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9041 goto end; 9042 case NFS4_CHKSEQ_REPLAY: 9043 rfs4_update_lease(lsp->rls_locker->rl_client); 9044 *cs->statusp = status = resp->status; 9045 goto end; 9046 } 9047 break; 9048 default: 9049 ASSERT(FALSE); 9050 break; 9051 } 9052 9053 rfs4_update_lock_sequence(lsp); 9054 rfs4_update_lease(lsp->rls_locker->rl_client); 9055 } 9056 9057 /* 9058 * NFS4 only allows locking on regular files, so 9059 * verify type of object. 9060 */ 9061 if (cs->vp->v_type != VREG) { 9062 if (cs->vp->v_type == VDIR) 9063 status = NFS4ERR_ISDIR; 9064 else 9065 status = NFS4ERR_INVAL; 9066 goto out; 9067 } 9068 9069 cp = lsp->rls_state->rs_owner->ro_client; 9070 9071 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 9072 status = NFS4ERR_GRACE; 9073 goto out; 9074 } 9075 9076 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->rc_can_reclaim) { 9077 status = NFS4ERR_NO_GRACE; 9078 goto out; 9079 } 9080 9081 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 9082 status = NFS4ERR_NO_GRACE; 9083 goto out; 9084 } 9085 9086 if (lsp->rls_state->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) 9087 cs->deleg = TRUE; 9088 9089 status = rfs4_do_lock(lsp, args->locktype, 9090 args->offset, args->length, cs->cr, resop); 9091 9092 out: 9093 lsp->rls_skip_seqid_check = FALSE; 9094 9095 *cs->statusp = resp->status = status; 9096 9097 if (status == NFS4_OK) { 9098 resp->LOCK4res_u.lock_stateid = lsp->rls_lockid.stateid; 9099 lsp->rls_lock_completed = TRUE; 9100 } 9101 /* 9102 * Only update the "OPEN" response here if this was a new 9103 * lock_owner 9104 */ 9105 if (sp) 9106 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9107 9108 rfs4_update_lock_resp(lsp, resop); 9109 9110 end: 9111 if (lsp) { 9112 if (ls_sw_held) 9113 rfs4_sw_exit(&lsp->rls_sw); 9114 /* 9115 * If an sp obtained, then the lsp does not represent 9116 * a lock on the file struct. 9117 */ 9118 if (sp != NULL) 9119 rfs4_lo_state_rele(lsp, FALSE); 9120 else 9121 rfs4_lo_state_rele(lsp, TRUE); 9122 } 9123 if (sp) { 9124 rfs4_sw_exit(&sp->rs_owner->ro_sw); 9125 rfs4_state_rele(sp); 9126 } 9127 9128 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 9129 LOCK4res *, resp); 9130 } 9131 9132 /* free function for LOCK/LOCKT */ 9133 static void 9134 lock_denied_free(nfs_resop4 *resop) 9135 { 9136 LOCK4denied *dp = NULL; 9137 9138 switch (resop->resop) { 9139 case OP_LOCK: 9140 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 9141 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 9142 break; 9143 case OP_LOCKT: 9144 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 9145 dp = &resop->nfs_resop4_u.oplockt.denied; 9146 break; 9147 default: 9148 break; 9149 } 9150 9151 if (dp) 9152 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 9153 } 9154 9155 /*ARGSUSED*/ 9156 void 9157 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 9158 struct svc_req *req, struct compound_state *cs) 9159 { 9160 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 9161 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 9162 nfsstat4 status; 9163 stateid4 *stateid = &args->lock_stateid; 9164 rfs4_lo_state_t *lsp; 9165 9166 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 9167 LOCKU4args *, args); 9168 9169 if (cs->vp == NULL) { 9170 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9171 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9172 LOCKU4res *, resp); 9173 return; 9174 } 9175 9176 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 9177 *cs->statusp = resp->status = status; 9178 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9179 LOCKU4res *, resp); 9180 return; 9181 } 9182 9183 /* Ensure specified filehandle matches */ 9184 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9185 rfs4_lo_state_rele(lsp, TRUE); 9186 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9187 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9188 LOCKU4res *, resp); 9189 return; 9190 } 9191 9192 /* hold off other access to lsp while we tinker */ 9193 rfs4_sw_enter(&lsp->rls_sw); 9194 9195 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9196 case NFS4_CHECK_STATEID_OKAY: 9197 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 9198 != NFS4_CHKSEQ_OKAY) { 9199 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9200 goto end; 9201 } 9202 break; 9203 case NFS4_CHECK_STATEID_OLD: 9204 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9205 goto end; 9206 case NFS4_CHECK_STATEID_BAD: 9207 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9208 goto end; 9209 case NFS4_CHECK_STATEID_EXPIRED: 9210 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9211 goto end; 9212 case NFS4_CHECK_STATEID_CLOSED: 9213 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9214 goto end; 9215 case NFS4_CHECK_STATEID_REPLAY: 9216 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9217 case NFS4_CHKSEQ_OKAY: 9218 /* 9219 * This is a replayed stateid; if 9220 * seqid matches the next expected, 9221 * then client is using wrong seqid. 9222 */ 9223 case NFS4_CHKSEQ_BAD: 9224 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9225 goto end; 9226 case NFS4_CHKSEQ_REPLAY: 9227 rfs4_update_lease(lsp->rls_locker->rl_client); 9228 *cs->statusp = status = resp->status; 9229 goto end; 9230 } 9231 break; 9232 default: 9233 ASSERT(FALSE); 9234 break; 9235 } 9236 9237 rfs4_update_lock_sequence(lsp); 9238 rfs4_update_lease(lsp->rls_locker->rl_client); 9239 9240 /* 9241 * NFS4 only allows locking on regular files, so 9242 * verify type of object. 9243 */ 9244 if (cs->vp->v_type != VREG) { 9245 if (cs->vp->v_type == VDIR) 9246 status = NFS4ERR_ISDIR; 9247 else 9248 status = NFS4ERR_INVAL; 9249 goto out; 9250 } 9251 9252 if (rfs4_clnt_in_grace(lsp->rls_state->rs_owner->ro_client)) { 9253 status = NFS4ERR_GRACE; 9254 goto out; 9255 } 9256 9257 status = rfs4_do_lock(lsp, args->locktype, 9258 args->offset, args->length, cs->cr, resop); 9259 9260 out: 9261 *cs->statusp = resp->status = status; 9262 9263 if (status == NFS4_OK) 9264 resp->lock_stateid = lsp->rls_lockid.stateid; 9265 9266 rfs4_update_lock_resp(lsp, resop); 9267 9268 end: 9269 rfs4_sw_exit(&lsp->rls_sw); 9270 rfs4_lo_state_rele(lsp, TRUE); 9271 9272 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9273 LOCKU4res *, resp); 9274 } 9275 9276 /* 9277 * LOCKT is a best effort routine, the client can not be guaranteed that 9278 * the status return is still in effect by the time the reply is received. 9279 * They are numerous race conditions in this routine, but we are not required 9280 * and can not be accurate. 9281 */ 9282 /*ARGSUSED*/ 9283 void 9284 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9285 struct svc_req *req, struct compound_state *cs) 9286 { 9287 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9288 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9289 rfs4_lockowner_t *lo; 9290 rfs4_client_t *cp; 9291 bool_t create = FALSE; 9292 struct flock64 flk; 9293 int error; 9294 int flag = FREAD | FWRITE; 9295 int ltype; 9296 length4 posix_length; 9297 sysid_t sysid; 9298 pid_t pid; 9299 9300 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9301 LOCKT4args *, args); 9302 9303 if (cs->vp == NULL) { 9304 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9305 goto out; 9306 } 9307 9308 /* 9309 * NFS4 only allows locking on regular files, so 9310 * verify type of object. 9311 */ 9312 if (cs->vp->v_type != VREG) { 9313 if (cs->vp->v_type == VDIR) 9314 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9315 else 9316 *cs->statusp = resp->status = NFS4ERR_INVAL; 9317 goto out; 9318 } 9319 9320 /* 9321 * Check out the clientid to ensure the server knows about it 9322 * so that we correctly inform the client of a server reboot. 9323 */ 9324 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9325 == NULL) { 9326 *cs->statusp = resp->status = 9327 rfs4_check_clientid(&args->owner.clientid, 0); 9328 goto out; 9329 } 9330 if (rfs4_lease_expired(cp)) { 9331 rfs4_client_close(cp); 9332 /* 9333 * Protocol doesn't allow returning NFS4ERR_STALE as 9334 * other operations do on this check so STALE_CLIENTID 9335 * is returned instead 9336 */ 9337 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9338 goto out; 9339 } 9340 9341 if (rfs4_clnt_in_grace(cp) && !(cp->rc_can_reclaim)) { 9342 *cs->statusp = resp->status = NFS4ERR_GRACE; 9343 rfs4_client_rele(cp); 9344 goto out; 9345 } 9346 rfs4_client_rele(cp); 9347 9348 resp->status = NFS4_OK; 9349 9350 switch (args->locktype) { 9351 case READ_LT: 9352 case READW_LT: 9353 ltype = F_RDLCK; 9354 break; 9355 case WRITE_LT: 9356 case WRITEW_LT: 9357 ltype = F_WRLCK; 9358 break; 9359 } 9360 9361 posix_length = args->length; 9362 /* Check for zero length. To lock to end of file use all ones for V4 */ 9363 if (posix_length == 0) { 9364 *cs->statusp = resp->status = NFS4ERR_INVAL; 9365 goto out; 9366 } else if (posix_length == (length4)(~0)) { 9367 posix_length = 0; /* Posix to end of file */ 9368 } 9369 9370 /* Find or create a lockowner */ 9371 lo = rfs4_findlockowner(&args->owner, &create); 9372 9373 if (lo) { 9374 pid = lo->rl_pid; 9375 if ((resp->status = 9376 rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 9377 goto err; 9378 } else { 9379 pid = 0; 9380 sysid = lockt_sysid; 9381 } 9382 retry: 9383 flk.l_type = ltype; 9384 flk.l_whence = 0; /* SEEK_SET */ 9385 flk.l_start = args->offset; 9386 flk.l_len = posix_length; 9387 flk.l_sysid = sysid; 9388 flk.l_pid = pid; 9389 flag |= F_REMOTELOCK; 9390 9391 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9392 9393 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9394 if (flk.l_len < 0 || flk.l_start < 0) { 9395 resp->status = NFS4ERR_INVAL; 9396 goto err; 9397 } 9398 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9399 NULL, cs->cr, NULL); 9400 9401 /* 9402 * N.B. We map error values to nfsv4 errors. This is differrent 9403 * than puterrno4 routine. 9404 */ 9405 switch (error) { 9406 case 0: 9407 if (flk.l_type == F_UNLCK) 9408 resp->status = NFS4_OK; 9409 else { 9410 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9411 goto retry; 9412 resp->status = NFS4ERR_DENIED; 9413 } 9414 break; 9415 case EOVERFLOW: 9416 resp->status = NFS4ERR_INVAL; 9417 break; 9418 case EINVAL: 9419 resp->status = NFS4ERR_NOTSUPP; 9420 break; 9421 default: 9422 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9423 error); 9424 resp->status = NFS4ERR_SERVERFAULT; 9425 break; 9426 } 9427 9428 err: 9429 if (lo) 9430 rfs4_lockowner_rele(lo); 9431 *cs->statusp = resp->status; 9432 out: 9433 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9434 LOCKT4res *, resp); 9435 } 9436 9437 int 9438 rfs4_share(rfs4_state_t *sp, uint32_t access, uint32_t deny) 9439 { 9440 int err; 9441 int cmd; 9442 vnode_t *vp; 9443 struct shrlock shr; 9444 struct shr_locowner shr_loco; 9445 int fflags = 0; 9446 9447 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9448 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9449 9450 if (sp->rs_closed) 9451 return (NFS4ERR_OLD_STATEID); 9452 9453 vp = sp->rs_finfo->rf_vp; 9454 ASSERT(vp); 9455 9456 shr.s_access = shr.s_deny = 0; 9457 9458 if (access & OPEN4_SHARE_ACCESS_READ) { 9459 fflags |= FREAD; 9460 shr.s_access |= F_RDACC; 9461 } 9462 if (access & OPEN4_SHARE_ACCESS_WRITE) { 9463 fflags |= FWRITE; 9464 shr.s_access |= F_WRACC; 9465 } 9466 ASSERT(shr.s_access); 9467 9468 if (deny & OPEN4_SHARE_DENY_READ) 9469 shr.s_deny |= F_RDDNY; 9470 if (deny & OPEN4_SHARE_DENY_WRITE) 9471 shr.s_deny |= F_WRDNY; 9472 9473 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9474 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9475 shr_loco.sl_pid = shr.s_pid; 9476 shr_loco.sl_id = shr.s_sysid; 9477 shr.s_owner = (caddr_t)&shr_loco; 9478 shr.s_own_len = sizeof (shr_loco); 9479 9480 cmd = nbl_need_check(vp) ? F_SHARE_NBMAND : F_SHARE; 9481 9482 err = VOP_SHRLOCK(vp, cmd, &shr, fflags, CRED(), NULL); 9483 if (err != 0) { 9484 if (err == EAGAIN) 9485 err = NFS4ERR_SHARE_DENIED; 9486 else 9487 err = puterrno4(err); 9488 return (err); 9489 } 9490 9491 sp->rs_share_access |= access; 9492 sp->rs_share_deny |= deny; 9493 9494 return (0); 9495 } 9496 9497 int 9498 rfs4_unshare(rfs4_state_t *sp) 9499 { 9500 int err; 9501 struct shrlock shr; 9502 struct shr_locowner shr_loco; 9503 9504 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9505 9506 if (sp->rs_closed || sp->rs_share_access == 0) 9507 return (0); 9508 9509 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9510 ASSERT(sp->rs_finfo->rf_vp); 9511 9512 shr.s_access = shr.s_deny = 0; 9513 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9514 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9515 shr_loco.sl_pid = shr.s_pid; 9516 shr_loco.sl_id = shr.s_sysid; 9517 shr.s_owner = (caddr_t)&shr_loco; 9518 shr.s_own_len = sizeof (shr_loco); 9519 9520 err = VOP_SHRLOCK(sp->rs_finfo->rf_vp, F_UNSHARE, &shr, 0, CRED(), 9521 NULL); 9522 if (err != 0) { 9523 err = puterrno4(err); 9524 return (err); 9525 } 9526 9527 sp->rs_share_access = 0; 9528 sp->rs_share_deny = 0; 9529 9530 return (0); 9531 9532 } 9533 9534 static int 9535 rdma_setup_read_data4(READ4args *args, READ4res *rok) 9536 { 9537 struct clist *wcl; 9538 count4 count = rok->data_len; 9539 int wlist_len; 9540 9541 wcl = args->wlist; 9542 if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) { 9543 return (FALSE); 9544 } 9545 wcl = args->wlist; 9546 rok->wlist_len = wlist_len; 9547 rok->wlist = wcl; 9548 return (TRUE); 9549 } 9550 9551 /* tunable to disable server referrals */ 9552 int rfs4_no_referrals = 0; 9553 9554 /* 9555 * Find an NFS record in reparse point data. 9556 * Returns 0 for success and <0 or an errno value on failure. 9557 */ 9558 int 9559 vn_find_nfs_record(vnode_t *vp, nvlist_t **nvlp, char **svcp, char **datap) 9560 { 9561 int err; 9562 char *stype, *val; 9563 nvlist_t *nvl; 9564 nvpair_t *curr; 9565 9566 if ((nvl = reparse_init()) == NULL) 9567 return (-1); 9568 9569 if ((err = reparse_vnode_parse(vp, nvl)) != 0) { 9570 reparse_free(nvl); 9571 return (err); 9572 } 9573 9574 curr = NULL; 9575 while ((curr = nvlist_next_nvpair(nvl, curr)) != NULL) { 9576 if ((stype = nvpair_name(curr)) == NULL) { 9577 reparse_free(nvl); 9578 return (-2); 9579 } 9580 if (strncasecmp(stype, "NFS", 3) == 0) 9581 break; 9582 } 9583 9584 if ((curr == NULL) || 9585 (nvpair_value_string(curr, &val))) { 9586 reparse_free(nvl); 9587 return (-3); 9588 } 9589 *nvlp = nvl; 9590 *svcp = stype; 9591 *datap = val; 9592 return (0); 9593 } 9594 9595 int 9596 vn_is_nfs_reparse(vnode_t *vp, cred_t *cr) 9597 { 9598 nvlist_t *nvl; 9599 char *s, *d; 9600 9601 if (rfs4_no_referrals != 0) 9602 return (B_FALSE); 9603 9604 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9605 return (B_FALSE); 9606 9607 if (vn_find_nfs_record(vp, &nvl, &s, &d) != 0) 9608 return (B_FALSE); 9609 9610 reparse_free(nvl); 9611 9612 return (B_TRUE); 9613 } 9614 9615 /* 9616 * There is a user-level copy of this routine in ref_subr.c. 9617 * Changes should be kept in sync. 9618 */ 9619 static int 9620 nfs4_create_components(char *path, component4 *comp4) 9621 { 9622 int slen, plen, ncomp; 9623 char *ori_path, *nxtc, buf[MAXNAMELEN]; 9624 9625 if (path == NULL) 9626 return (0); 9627 9628 plen = strlen(path) + 1; /* include the terminator */ 9629 ori_path = path; 9630 ncomp = 0; 9631 9632 /* count number of components in the path */ 9633 for (nxtc = path; nxtc < ori_path + plen; nxtc++) { 9634 if (*nxtc == '/' || *nxtc == '\0' || *nxtc == '\n') { 9635 if ((slen = nxtc - path) == 0) { 9636 path = nxtc + 1; 9637 continue; 9638 } 9639 9640 if (comp4 != NULL) { 9641 bcopy(path, buf, slen); 9642 buf[slen] = '\0'; 9643 (void) str_to_utf8(buf, &comp4[ncomp]); 9644 } 9645 9646 ncomp++; /* 1 valid component */ 9647 path = nxtc + 1; 9648 } 9649 if (*nxtc == '\0' || *nxtc == '\n') 9650 break; 9651 } 9652 9653 return (ncomp); 9654 } 9655 9656 /* 9657 * There is a user-level copy of this routine in ref_subr.c. 9658 * Changes should be kept in sync. 9659 */ 9660 static int 9661 make_pathname4(char *path, pathname4 *pathname) 9662 { 9663 int ncomp; 9664 component4 *comp4; 9665 9666 if (pathname == NULL) 9667 return (0); 9668 9669 if (path == NULL) { 9670 pathname->pathname4_val = NULL; 9671 pathname->pathname4_len = 0; 9672 return (0); 9673 } 9674 9675 /* count number of components to alloc buffer */ 9676 if ((ncomp = nfs4_create_components(path, NULL)) == 0) { 9677 pathname->pathname4_val = NULL; 9678 pathname->pathname4_len = 0; 9679 return (0); 9680 } 9681 comp4 = kmem_zalloc(ncomp * sizeof (component4), KM_SLEEP); 9682 9683 /* copy components into allocated buffer */ 9684 ncomp = nfs4_create_components(path, comp4); 9685 9686 pathname->pathname4_val = comp4; 9687 pathname->pathname4_len = ncomp; 9688 9689 return (ncomp); 9690 } 9691 9692 #define xdr_fs_locations4 xdr_fattr4_fs_locations 9693 9694 fs_locations4 * 9695 fetch_referral(vnode_t *vp, cred_t *cr) 9696 { 9697 nvlist_t *nvl; 9698 char *stype, *sdata; 9699 fs_locations4 *result; 9700 char buf[1024]; 9701 size_t bufsize; 9702 XDR xdr; 9703 int err; 9704 9705 /* 9706 * Check attrs to ensure it's a reparse point 9707 */ 9708 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9709 return (NULL); 9710 9711 /* 9712 * Look for an NFS record and get the type and data 9713 */ 9714 if (vn_find_nfs_record(vp, &nvl, &stype, &sdata) != 0) 9715 return (NULL); 9716 9717 /* 9718 * With the type and data, upcall to get the referral 9719 */ 9720 bufsize = sizeof (buf); 9721 bzero(buf, sizeof (buf)); 9722 err = reparse_kderef((const char *)stype, (const char *)sdata, 9723 buf, &bufsize); 9724 reparse_free(nvl); 9725 9726 DTRACE_PROBE4(nfs4serv__func__referral__upcall, 9727 char *, stype, char *, sdata, char *, buf, int, err); 9728 if (err) { 9729 cmn_err(CE_NOTE, 9730 "reparsed daemon not running: unable to get referral (%d)", 9731 err); 9732 return (NULL); 9733 } 9734 9735 /* 9736 * We get an XDR'ed record back from the kderef call 9737 */ 9738 xdrmem_create(&xdr, buf, bufsize, XDR_DECODE); 9739 result = kmem_alloc(sizeof (fs_locations4), KM_SLEEP); 9740 err = xdr_fs_locations4(&xdr, result); 9741 XDR_DESTROY(&xdr); 9742 if (err != TRUE) { 9743 DTRACE_PROBE1(nfs4serv__func__referral__upcall__xdrfail, 9744 int, err); 9745 return (NULL); 9746 } 9747 9748 /* 9749 * Look at path to recover fs_root, ignoring the leading '/' 9750 */ 9751 (void) make_pathname4(vp->v_path, &result->fs_root); 9752 9753 return (result); 9754 } 9755 9756 char * 9757 build_symlink(vnode_t *vp, cred_t *cr, size_t *strsz) 9758 { 9759 fs_locations4 *fsl; 9760 fs_location4 *fs; 9761 char *server, *path, *symbuf; 9762 static char *prefix = "/net/"; 9763 int i, size, npaths; 9764 uint_t len; 9765 9766 /* Get the referral */ 9767 if ((fsl = fetch_referral(vp, cr)) == NULL) 9768 return (NULL); 9769 9770 /* Deal with only the first location and first server */ 9771 fs = &fsl->locations_val[0]; 9772 server = utf8_to_str(&fs->server_val[0], &len, NULL); 9773 if (server == NULL) { 9774 rfs4_free_fs_locations4(fsl); 9775 kmem_free(fsl, sizeof (fs_locations4)); 9776 return (NULL); 9777 } 9778 9779 /* Figure out size for "/net/" + host + /path/path/path + NULL */ 9780 size = strlen(prefix) + len; 9781 for (i = 0; i < fs->rootpath.pathname4_len; i++) 9782 size += fs->rootpath.pathname4_val[i].utf8string_len + 1; 9783 9784 /* Allocate the symlink buffer and fill it */ 9785 symbuf = kmem_zalloc(size, KM_SLEEP); 9786 (void) strcat(symbuf, prefix); 9787 (void) strcat(symbuf, server); 9788 kmem_free(server, len); 9789 9790 npaths = 0; 9791 for (i = 0; i < fs->rootpath.pathname4_len; i++) { 9792 path = utf8_to_str(&fs->rootpath.pathname4_val[i], &len, NULL); 9793 if (path == NULL) 9794 continue; 9795 (void) strcat(symbuf, "/"); 9796 (void) strcat(symbuf, path); 9797 npaths++; 9798 kmem_free(path, len); 9799 } 9800 9801 rfs4_free_fs_locations4(fsl); 9802 kmem_free(fsl, sizeof (fs_locations4)); 9803 9804 if (strsz != NULL) 9805 *strsz = size; 9806 return (symbuf); 9807 } 9808 9809 /* 9810 * Check to see if we have a downrev Solaris client, so that we 9811 * can send it a symlink instead of a referral. 9812 */ 9813 int 9814 client_is_downrev(struct svc_req *req) 9815 { 9816 struct sockaddr *ca; 9817 rfs4_clntip_t *ci; 9818 bool_t create = FALSE; 9819 int is_downrev; 9820 9821 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 9822 ASSERT(ca); 9823 ci = rfs4_find_clntip(ca, &create); 9824 if (ci == NULL) 9825 return (0); 9826 is_downrev = ci->ri_no_referrals; 9827 rfs4_dbe_rele(ci->ri_dbe); 9828 return (is_downrev); 9829 } 9830