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) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 24 * Copyright (c) 2012, 2016 by Delphix. All rights reserved. 25 * Copyright (c) 2012, Joyent, Inc. All rights reserved. 26 */ 27 28 #ifndef _SYS_ZFS_CONTEXT_H 29 #define _SYS_ZFS_CONTEXT_H 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 #define _SYS_MUTEX_H 36 #define _SYS_RWLOCK_H 37 #define _SYS_CONDVAR_H 38 #define _SYS_SYSTM_H 39 #define _SYS_T_LOCK_H 40 #define _SYS_VNODE_H 41 #define _SYS_VFS_H 42 #define _SYS_SUNDDI_H 43 #define _SYS_CALLB_H 44 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <stddef.h> 48 #include <stdarg.h> 49 #include <fcntl.h> 50 #include <unistd.h> 51 #include <errno.h> 52 #include <string.h> 53 #include <strings.h> 54 #include <synch.h> 55 #include <thread.h> 56 #include <assert.h> 57 #include <alloca.h> 58 #include <umem.h> 59 #include <limits.h> 60 #include <atomic.h> 61 #include <dirent.h> 62 #include <time.h> 63 #include <procfs.h> 64 #include <pthread.h> 65 #include <setjmp.h> 66 #include <sys/debug.h> 67 #include <libsysevent.h> 68 #include <sys/note.h> 69 #include <sys/types.h> 70 #include <sys/cred.h> 71 #include <sys/sysmacros.h> 72 #include <sys/bitmap.h> 73 #include <sys/resource.h> 74 #include <sys/byteorder.h> 75 #include <sys/list.h> 76 #include <sys/uio.h> 77 #include <sys/zfs_debug.h> 78 #include <sys/sdt.h> 79 #include <sys/kstat.h> 80 #include <sys/u8_textprep.h> 81 #include <sys/sysevent/eventdefs.h> 82 #include <sys/sysevent/dev.h> 83 #include <sys/sunddi.h> 84 #include <sys/debug.h> 85 #include "zfs.h" 86 87 /* 88 * Debugging 89 */ 90 91 /* 92 * Note that we are not using the debugging levels. 93 */ 94 95 #define CE_CONT 0 /* continuation */ 96 #define CE_NOTE 1 /* notice */ 97 #define CE_WARN 2 /* warning */ 98 #define CE_PANIC 3 /* panic */ 99 #define CE_IGNORE 4 /* print nothing */ 100 101 /* 102 * ZFS debugging 103 */ 104 105 #ifdef ZFS_DEBUG 106 extern void dprintf_setup(int *argc, char **argv); 107 #endif /* ZFS_DEBUG */ 108 109 extern void cmn_err(int, const char *, ...); 110 extern void vcmn_err(int, const char *, __va_list); 111 extern void panic(const char *, ...) __NORETURN; 112 extern void vpanic(const char *, __va_list) __NORETURN; 113 114 #define fm_panic panic 115 116 extern int aok; 117 118 /* 119 * DTrace SDT probes have different signatures in userland than they do in 120 * the kernel. If they're being used in kernel code, re-define them out of 121 * existence for their counterparts in libzpool. 122 * 123 * Here's an example of how to use the set-error probes in userland: 124 * zfs$target:::set-error /arg0 == EBUSY/ {stack();} 125 * 126 * Here's an example of how to use DTRACE_PROBE probes in userland: 127 * If there is a probe declared as follows: 128 * DTRACE_PROBE2(zfs__probe_name, uint64_t, blkid, dnode_t *, dn); 129 * Then you can use it as follows: 130 * zfs$target:::probe2 /copyinstr(arg0) == "zfs__probe_name"/ 131 * {printf("%u %p\n", arg1, arg2);} 132 */ 133 134 #ifdef DTRACE_PROBE 135 #undef DTRACE_PROBE 136 #endif /* DTRACE_PROBE */ 137 #define DTRACE_PROBE(a) \ 138 ZFS_PROBE0(#a) 139 140 #ifdef DTRACE_PROBE1 141 #undef DTRACE_PROBE1 142 #endif /* DTRACE_PROBE1 */ 143 #define DTRACE_PROBE1(a, b, c) \ 144 ZFS_PROBE1(#a, (unsigned long)c) 145 146 #ifdef DTRACE_PROBE2 147 #undef DTRACE_PROBE2 148 #endif /* DTRACE_PROBE2 */ 149 #define DTRACE_PROBE2(a, b, c, d, e) \ 150 ZFS_PROBE2(#a, (unsigned long)c, (unsigned long)e) 151 152 #ifdef DTRACE_PROBE3 153 #undef DTRACE_PROBE3 154 #endif /* DTRACE_PROBE3 */ 155 #define DTRACE_PROBE3(a, b, c, d, e, f, g) \ 156 ZFS_PROBE3(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g) 157 158 #ifdef DTRACE_PROBE4 159 #undef DTRACE_PROBE4 160 #endif /* DTRACE_PROBE4 */ 161 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) \ 162 ZFS_PROBE4(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g, \ 163 (unsigned long)i) 164 165 /* 166 * We use the comma operator so that this macro can be used without much 167 * additional code. For example, "return (EINVAL);" becomes 168 * "return (SET_ERROR(EINVAL));". Note that the argument will be evaluated 169 * twice, so it should not have side effects (e.g. something like: 170 * "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice). 171 */ 172 #define SET_ERROR(err) (ZFS_SET_ERROR(err), err) 173 174 /* 175 * Threads 176 */ 177 #define curthread ((void *)(uintptr_t)thr_self()) 178 179 #define kpreempt(x) yield() 180 181 typedef struct kthread kthread_t; 182 183 #define thread_create(stk, stksize, func, arg, len, pp, state, pri) \ 184 zk_thread_create(func, arg, len) 185 #define thread_exit() thr_exit(NULL) 186 #define thread_join(t) panic("libzpool cannot join threads") 187 188 #define newproc(f, a, cid, pri, ctp, pid) (ENOSYS) 189 190 /* in libzpool, p0 exists only to have its address taken */ 191 struct proc { 192 uintptr_t this_is_never_used_dont_dereference_it; 193 }; 194 195 extern struct proc p0; 196 #define curproc (&p0) 197 198 #define PS_NONE -1 199 200 extern kthread_t *zk_thread_create(void (*func)(), void *arg, uint64_t len); 201 202 #define issig(why) (FALSE) 203 #define ISSIG(thr, why) (FALSE) 204 205 /* 206 * Mutexes 207 */ 208 typedef struct kmutex { 209 void *m_owner; 210 boolean_t initialized; 211 mutex_t m_lock; 212 } kmutex_t; 213 214 #define MUTEX_DEFAULT USYNC_THREAD 215 #undef MUTEX_HELD 216 #undef MUTEX_NOT_HELD 217 #define MUTEX_HELD(m) _mutex_held(&(m)->m_lock) 218 #define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m)) 219 220 /* 221 * Argh -- we have to get cheesy here because the kernel and userland 222 * have different signatures for the same routine. 223 */ 224 extern int _mutex_init(mutex_t *mp, int type, void *arg); 225 extern int _mutex_destroy(mutex_t *mp); 226 227 #define mutex_init(mp, b, c, d) zmutex_init((kmutex_t *)(mp)) 228 #define mutex_destroy(mp) zmutex_destroy((kmutex_t *)(mp)) 229 #define mutex_enter(mp) zmutex_enter(mp) 230 #define mutex_exit(mp) zmutex_exit(mp) 231 232 extern void zmutex_init(kmutex_t *mp); 233 extern void zmutex_destroy(kmutex_t *mp); 234 extern void zmutex_enter(kmutex_t *mp); 235 extern void zmutex_exit(kmutex_t *mp); 236 extern int mutex_tryenter(kmutex_t *mp); 237 extern void *mutex_owner(kmutex_t *mp); 238 239 /* 240 * RW locks 241 */ 242 typedef struct krwlock { 243 void *rw_owner; 244 boolean_t initialized; 245 rwlock_t rw_lock; 246 } krwlock_t; 247 248 typedef int krw_t; 249 250 #define RW_READER 0 251 #define RW_WRITER 1 252 #define RW_DEFAULT USYNC_THREAD 253 254 #undef RW_READ_HELD 255 #define RW_READ_HELD(x) _rw_read_held(&(x)->rw_lock) 256 257 #undef RW_WRITE_HELD 258 #define RW_WRITE_HELD(x) _rw_write_held(&(x)->rw_lock) 259 260 #undef RW_LOCK_HELD 261 #define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x)) 262 263 extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg); 264 extern void rw_destroy(krwlock_t *rwlp); 265 extern void rw_enter(krwlock_t *rwlp, krw_t rw); 266 extern int rw_tryenter(krwlock_t *rwlp, krw_t rw); 267 extern int rw_tryupgrade(krwlock_t *rwlp); 268 extern void rw_exit(krwlock_t *rwlp); 269 #define rw_downgrade(rwlp) do { } while (0) 270 271 extern uid_t crgetuid(cred_t *cr); 272 extern uid_t crgetruid(cred_t *cr); 273 extern gid_t crgetgid(cred_t *cr); 274 extern int crgetngroups(cred_t *cr); 275 extern gid_t *crgetgroups(cred_t *cr); 276 277 /* 278 * Condition variables 279 */ 280 typedef cond_t kcondvar_t; 281 282 #define CV_DEFAULT USYNC_THREAD 283 #define CALLOUT_FLAG_ABSOLUTE 0x2 284 285 extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg); 286 extern void cv_destroy(kcondvar_t *cv); 287 extern void cv_wait(kcondvar_t *cv, kmutex_t *mp); 288 extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime); 289 extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim, 290 hrtime_t res, int flag); 291 extern void cv_signal(kcondvar_t *cv); 292 extern void cv_broadcast(kcondvar_t *cv); 293 294 /* 295 * Thread-specific data 296 */ 297 #define tsd_get(k) pthread_getspecific(k) 298 #define tsd_set(k, v) pthread_setspecific(k, v) 299 #define tsd_create(kp, d) pthread_key_create(kp, d) 300 #define tsd_destroy(kp) /* nothing */ 301 302 /* 303 * kstat creation, installation and deletion 304 */ 305 extern kstat_t *kstat_create(const char *, int, 306 const char *, const char *, uchar_t, ulong_t, uchar_t); 307 extern void kstat_named_init(kstat_named_t *, const char *, uchar_t); 308 extern void kstat_install(kstat_t *); 309 extern void kstat_delete(kstat_t *); 310 extern void kstat_waitq_enter(kstat_io_t *); 311 extern void kstat_waitq_exit(kstat_io_t *); 312 extern void kstat_runq_enter(kstat_io_t *); 313 extern void kstat_runq_exit(kstat_io_t *); 314 extern void kstat_waitq_to_runq(kstat_io_t *); 315 extern void kstat_runq_back_to_waitq(kstat_io_t *); 316 317 /* 318 * Kernel memory 319 */ 320 #define KM_SLEEP UMEM_NOFAIL 321 #define KM_PUSHPAGE KM_SLEEP 322 #define KM_NOSLEEP UMEM_DEFAULT 323 #define KM_NORMALPRI 0 /* not needed with UMEM_DEFAULT */ 324 #define KMC_NODEBUG UMC_NODEBUG 325 #define KMC_NOTOUCH 0 /* not needed for userland caches */ 326 #define kmem_alloc(_s, _f) umem_alloc(_s, _f) 327 #define kmem_zalloc(_s, _f) umem_zalloc(_s, _f) 328 #define kmem_free(_b, _s) umem_free(_b, _s) 329 #define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \ 330 umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) 331 #define kmem_cache_destroy(_c) umem_cache_destroy(_c) 332 #define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f) 333 #define kmem_cache_free(_c, _b) umem_cache_free(_c, _b) 334 #define kmem_debugging() 0 335 #define kmem_cache_reap_now(_c) /* nothing */ 336 #define kmem_cache_set_move(_c, _cb) /* nothing */ 337 #define vmem_qcache_reap(_v) /* nothing */ 338 #define POINTER_INVALIDATE(_pp) /* nothing */ 339 #define POINTER_IS_VALID(_p) 0 340 341 extern vmem_t *zio_arena; 342 343 typedef umem_cache_t kmem_cache_t; 344 345 typedef enum kmem_cbrc { 346 KMEM_CBRC_YES, 347 KMEM_CBRC_NO, 348 KMEM_CBRC_LATER, 349 KMEM_CBRC_DONT_NEED, 350 KMEM_CBRC_DONT_KNOW 351 } kmem_cbrc_t; 352 353 /* 354 * Task queues 355 */ 356 typedef struct taskq taskq_t; 357 typedef uintptr_t taskqid_t; 358 typedef void (task_func_t)(void *); 359 360 typedef struct taskq_ent { 361 struct taskq_ent *tqent_next; 362 struct taskq_ent *tqent_prev; 363 task_func_t *tqent_func; 364 void *tqent_arg; 365 uintptr_t tqent_flags; 366 } taskq_ent_t; 367 368 #define TQENT_FLAG_PREALLOC 0x1 /* taskq_dispatch_ent used */ 369 370 #define TASKQ_PREPOPULATE 0x0001 371 #define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */ 372 #define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */ 373 #define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */ 374 #define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */ 375 376 #define TQ_SLEEP KM_SLEEP /* Can block for memory */ 377 #define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */ 378 #define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */ 379 #define TQ_FRONT 0x08 /* Queue in front */ 380 381 382 extern taskq_t *system_taskq; 383 384 extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t); 385 #define taskq_create_proc(a, b, c, d, e, p, f) \ 386 (taskq_create(a, b, c, d, e, f)) 387 #define taskq_create_sysdc(a, b, d, e, p, dc, f) \ 388 (taskq_create(a, b, maxclsyspri, d, e, f)) 389 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); 390 extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t, 391 taskq_ent_t *); 392 extern void taskq_destroy(taskq_t *); 393 extern void taskq_wait(taskq_t *); 394 extern int taskq_member(taskq_t *, void *); 395 extern void system_taskq_init(void); 396 extern void system_taskq_fini(void); 397 398 #define XVA_MAPSIZE 3 399 #define XVA_MAGIC 0x78766174 400 401 /* 402 * vnodes 403 */ 404 typedef struct vnode { 405 uint64_t v_size; 406 int v_fd; 407 char *v_path; 408 int v_dump_fd; 409 } vnode_t; 410 411 extern char *vn_dumpdir; 412 #define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */ 413 414 typedef struct xoptattr { 415 timestruc_t xoa_createtime; /* Create time of file */ 416 uint8_t xoa_archive; 417 uint8_t xoa_system; 418 uint8_t xoa_readonly; 419 uint8_t xoa_hidden; 420 uint8_t xoa_nounlink; 421 uint8_t xoa_immutable; 422 uint8_t xoa_appendonly; 423 uint8_t xoa_nodump; 424 uint8_t xoa_settable; 425 uint8_t xoa_opaque; 426 uint8_t xoa_av_quarantined; 427 uint8_t xoa_av_modified; 428 uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ]; 429 uint8_t xoa_reparse; 430 uint8_t xoa_offline; 431 uint8_t xoa_sparse; 432 } xoptattr_t; 433 434 typedef struct vattr { 435 uint_t va_mask; /* bit-mask of attributes */ 436 u_offset_t va_size; /* file size in bytes */ 437 } vattr_t; 438 439 440 typedef struct xvattr { 441 vattr_t xva_vattr; /* Embedded vattr structure */ 442 uint32_t xva_magic; /* Magic Number */ 443 uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */ 444 uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */ 445 uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */ 446 uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */ 447 xoptattr_t xva_xoptattrs; /* Optional attributes */ 448 } xvattr_t; 449 450 typedef struct vsecattr { 451 uint_t vsa_mask; /* See below */ 452 int vsa_aclcnt; /* ACL entry count */ 453 void *vsa_aclentp; /* pointer to ACL entries */ 454 int vsa_dfaclcnt; /* default ACL entry count */ 455 void *vsa_dfaclentp; /* pointer to default ACL entries */ 456 size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */ 457 } vsecattr_t; 458 459 #define AT_TYPE 0x00001 460 #define AT_MODE 0x00002 461 #define AT_UID 0x00004 462 #define AT_GID 0x00008 463 #define AT_FSID 0x00010 464 #define AT_NODEID 0x00020 465 #define AT_NLINK 0x00040 466 #define AT_SIZE 0x00080 467 #define AT_ATIME 0x00100 468 #define AT_MTIME 0x00200 469 #define AT_CTIME 0x00400 470 #define AT_RDEV 0x00800 471 #define AT_BLKSIZE 0x01000 472 #define AT_NBLOCKS 0x02000 473 #define AT_SEQ 0x08000 474 #define AT_XVATTR 0x10000 475 476 #define CRCREAT 0 477 478 extern int fop_getattr(vnode_t *vp, vattr_t *vap); 479 480 #define VOP_CLOSE(vp, f, c, o, cr, ct) 0 481 #define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0 482 #define VOP_GETATTR(vp, vap, fl, cr, ct) fop_getattr((vp), (vap)); 483 484 #define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd) 485 486 #define VN_RELE(vp) vn_close(vp) 487 488 extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp, 489 int x2, int x3); 490 extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp, 491 int x2, int x3, vnode_t *vp, int fd); 492 extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len, 493 offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp); 494 extern void vn_close(vnode_t *vp); 495 496 #define vn_remove(path, x1, x2) remove(path) 497 #define vn_rename(from, to, seg) rename((from), (to)) 498 #define vn_is_readonly(vp) B_FALSE 499 500 extern vnode_t *rootdir; 501 502 #include <sys/file.h> /* for FREAD, FWRITE, etc */ 503 504 /* 505 * Random stuff 506 */ 507 #define ddi_get_lbolt() (gethrtime() >> 23) 508 #define ddi_get_lbolt64() (gethrtime() >> 23) 509 #define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */ 510 511 extern void delay(clock_t ticks); 512 513 #define SEC_TO_TICK(sec) ((sec) * hz) 514 #define NSEC_TO_TICK(usec) ((usec) / (NANOSEC / hz)) 515 516 #define gethrestime_sec() time(NULL) 517 #define gethrestime(t) \ 518 do {\ 519 (t)->tv_sec = gethrestime_sec();\ 520 (t)->tv_nsec = 0;\ 521 } while (0); 522 523 #define max_ncpus 64 524 #define boot_ncpus (sysconf(_SC_NPROCESSORS_ONLN)) 525 526 #define minclsyspri 60 527 #define maxclsyspri 99 528 529 #define CPU_SEQID (thr_self() & (max_ncpus - 1)) 530 531 #define kcred NULL 532 #define CRED() NULL 533 534 #define ptob(x) ((x) * PAGESIZE) 535 536 extern uint64_t physmem; 537 538 extern int highbit64(uint64_t i); 539 extern int random_get_bytes(uint8_t *ptr, size_t len); 540 extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len); 541 542 extern void kernel_init(int); 543 extern void kernel_fini(void); 544 545 struct spa; 546 extern void nicenum(uint64_t num, char *buf, size_t); 547 extern void show_pool_stats(struct spa *); 548 extern int set_global_var(char *arg); 549 550 typedef struct callb_cpr { 551 kmutex_t *cc_lockp; 552 } callb_cpr_t; 553 554 #define CALLB_CPR_INIT(cp, lockp, func, name) { \ 555 (cp)->cc_lockp = lockp; \ 556 } 557 558 #define CALLB_CPR_SAFE_BEGIN(cp) { \ 559 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 560 } 561 562 #define CALLB_CPR_SAFE_END(cp, lockp) { \ 563 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 564 } 565 566 #define CALLB_CPR_EXIT(cp) { \ 567 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 568 mutex_exit((cp)->cc_lockp); \ 569 } 570 571 #define zone_dataset_visible(x, y) (1) 572 #define INGLOBALZONE(z) (1) 573 574 extern char *kmem_asprintf(const char *fmt, ...); 575 #define strfree(str) kmem_free((str), strlen(str) + 1) 576 577 /* 578 * Hostname information 579 */ 580 extern char hw_serial[]; /* for userland-emulated hostid access */ 581 extern int ddi_strtoul(const char *str, char **nptr, int base, 582 unsigned long *result); 583 584 extern int ddi_strtoull(const char *str, char **nptr, int base, 585 u_longlong_t *result); 586 587 /* ZFS Boot Related stuff. */ 588 589 struct _buf { 590 intptr_t _fd; 591 }; 592 593 struct bootstat { 594 uint64_t st_size; 595 }; 596 597 typedef struct ace_object { 598 uid_t a_who; 599 uint32_t a_access_mask; 600 uint16_t a_flags; 601 uint16_t a_type; 602 uint8_t a_obj_type[16]; 603 uint8_t a_inherit_obj_type[16]; 604 } ace_object_t; 605 606 607 #define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05 608 #define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06 609 #define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07 610 #define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08 611 612 extern struct _buf *kobj_open_file(char *name); 613 extern int kobj_read_file(struct _buf *file, char *buf, unsigned size, 614 unsigned off); 615 extern void kobj_close_file(struct _buf *file); 616 extern int kobj_get_filesize(struct _buf *file, uint64_t *size); 617 extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr); 618 extern int zfs_secpolicy_rename_perms(const char *from, const char *to, 619 cred_t *cr); 620 extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr); 621 extern zoneid_t getzoneid(void); 622 623 /* SID stuff */ 624 typedef struct ksiddomain { 625 uint_t kd_ref; 626 uint_t kd_len; 627 char *kd_name; 628 } ksiddomain_t; 629 630 ksiddomain_t *ksid_lookupdomain(const char *); 631 void ksiddomain_rele(ksiddomain_t *); 632 633 #define DDI_SLEEP KM_SLEEP 634 #define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) \ 635 sysevent_post_event(_c, _d, _b, "libzpool", _e, _f) 636 637 /* 638 * Cyclic information 639 */ 640 extern kmutex_t cpu_lock; 641 642 typedef uintptr_t cyclic_id_t; 643 typedef uint16_t cyc_level_t; 644 typedef void (*cyc_func_t)(void *); 645 646 #define CY_LOW_LEVEL 0 647 #define CY_INFINITY INT64_MAX 648 #define CYCLIC_NONE ((cyclic_id_t)0) 649 650 typedef struct cyc_time { 651 hrtime_t cyt_when; 652 hrtime_t cyt_interval; 653 } cyc_time_t; 654 655 typedef struct cyc_handler { 656 cyc_func_t cyh_func; 657 void *cyh_arg; 658 cyc_level_t cyh_level; 659 } cyc_handler_t; 660 661 extern cyclic_id_t cyclic_add(cyc_handler_t *, cyc_time_t *); 662 extern void cyclic_remove(cyclic_id_t); 663 extern int cyclic_reprogram(cyclic_id_t, hrtime_t); 664 665 /* 666 * Buf structure 667 */ 668 #define B_BUSY 0x0001 669 #define B_DONE 0x0002 670 #define B_ERROR 0x0004 671 #define B_READ 0x0040 /* read when I/O occurs */ 672 #define B_WRITE 0x0100 /* non-read pseudo-flag */ 673 674 typedef struct buf { 675 int b_flags; 676 size_t b_bcount; 677 union { 678 caddr_t b_addr; 679 } b_un; 680 681 lldaddr_t _b_blkno; 682 #define b_lblkno _b_blkno._f 683 size_t b_resid; 684 size_t b_bufsize; 685 int (*b_iodone)(struct buf *); 686 int b_error; 687 void *b_private; 688 } buf_t; 689 690 extern void bioinit(buf_t *); 691 extern void biodone(buf_t *); 692 extern void bioerror(buf_t *, int); 693 extern int geterror(buf_t *); 694 695 #ifdef __cplusplus 696 } 697 #endif 698 699 #endif /* _SYS_ZFS_CONTEXT_H */ 700