zfs_context.h revision 260754
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 (c) 2013 by Delphix. All rights reserved. 24 * Copyright (c) 2012, Joyent, Inc. All rights reserved. 25 */ 26/* 27 * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 28 */ 29 30#ifndef _SYS_ZFS_CONTEXT_H 31#define _SYS_ZFS_CONTEXT_H 32 33#ifdef __cplusplus 34extern "C" { 35#endif 36 37#define _SYS_MUTEX_H 38#define _SYS_RWLOCK_H 39#define _SYS_CONDVAR_H 40#define _SYS_SYSTM_H 41#define _SYS_T_LOCK_H 42#define _SYS_VNODE_H 43#define _SYS_VFS_H 44#define _SYS_SUNDDI_H 45#define _SYS_CALLB_H 46#define _SYS_SCHED_H_ 47 48#include <solaris.h> 49#include <stdio.h> 50#include <stdlib.h> 51#include <stddef.h> 52#include <stdarg.h> 53#include <fcntl.h> 54#include <unistd.h> 55#include <errno.h> 56#include <string.h> 57#include <strings.h> 58#include <thread.h> 59#include <assert.h> 60#include <limits.h> 61#include <dirent.h> 62#include <time.h> 63#include <math.h> 64#include <umem.h> 65#include <inttypes.h> 66#include <fsshare.h> 67#include <pthread.h> 68#include <sys/debug.h> 69#include <sys/note.h> 70#include <sys/types.h> 71#include <sys/cred.h> 72#include <sys/atomic.h> 73#include <sys/sysmacros.h> 74#include <sys/bitmap.h> 75#include <sys/resource.h> 76#include <sys/byteorder.h> 77#include <sys/list.h> 78#include <sys/time.h> 79#include <sys/uio.h> 80#include <sys/mntent.h> 81#include <sys/mnttab.h> 82#include <sys/zfs_debug.h> 83#include <sys/sdt.h> 84#include <sys/kstat.h> 85#include <sys/u8_textprep.h> 86#include <sys/kernel.h> 87#include <sys/disk.h> 88#include <sys/sysevent.h> 89#include <sys/sysevent/eventdefs.h> 90#include <sys/sysevent/dev.h> 91#include <machine/atomic.h> 92#include <sys/debug.h> 93#ifdef illumos 94#include "zfs.h" 95#endif 96 97#define ZFS_EXPORTS_PATH "/etc/zfs/exports" 98 99/* 100 * Debugging 101 */ 102 103/* 104 * Note that we are not using the debugging levels. 105 */ 106 107#define CE_CONT 0 /* continuation */ 108#define CE_NOTE 1 /* notice */ 109#define CE_WARN 2 /* warning */ 110#define CE_PANIC 3 /* panic */ 111#define CE_IGNORE 4 /* print nothing */ 112 113/* 114 * ZFS debugging 115 */ 116 117#define ZFS_LOG(...) do { } while (0) 118 119typedef u_longlong_t rlim64_t; 120#define RLIM64_INFINITY ((rlim64_t)-3) 121 122#ifdef ZFS_DEBUG 123extern void dprintf_setup(int *argc, char **argv); 124#endif /* ZFS_DEBUG */ 125 126extern void cmn_err(int, const char *, ...); 127extern void vcmn_err(int, const char *, __va_list); 128extern void panic(const char *, ...); 129extern void vpanic(const char *, __va_list); 130 131#define fm_panic panic 132 133extern int aok; 134 135/* 136 * DTrace SDT probes have different signatures in userland than they do in 137 * kernel. If they're being used in kernel code, re-define them out of 138 * existence for their counterparts in libzpool. 139 */ 140 141#ifdef DTRACE_PROBE 142#undef DTRACE_PROBE 143#endif /* DTRACE_PROBE */ 144#ifdef illumos 145#define DTRACE_PROBE(a) \ 146 ZFS_PROBE0(#a) 147#endif 148 149#ifdef DTRACE_PROBE1 150#undef DTRACE_PROBE1 151#endif /* DTRACE_PROBE1 */ 152#ifdef illumos 153#define DTRACE_PROBE1(a, b, c) \ 154 ZFS_PROBE1(#a, (unsigned long)c) 155#endif 156 157#ifdef DTRACE_PROBE2 158#undef DTRACE_PROBE2 159#endif /* DTRACE_PROBE2 */ 160#ifdef illumos 161#define DTRACE_PROBE2(a, b, c, d, e) \ 162 ZFS_PROBE2(#a, (unsigned long)c, (unsigned long)e) 163#endif 164 165#ifdef DTRACE_PROBE3 166#undef DTRACE_PROBE3 167#endif /* DTRACE_PROBE3 */ 168#ifdef illumos 169#define DTRACE_PROBE3(a, b, c, d, e, f, g) \ 170 ZFS_PROBE3(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g) 171#endif 172 173#ifdef DTRACE_PROBE4 174#undef DTRACE_PROBE4 175#endif /* DTRACE_PROBE4 */ 176#ifdef illumos 177#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) \ 178 ZFS_PROBE4(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g, \ 179 (unsigned long)i) 180#endif 181 182#ifdef illumos 183/* 184 * We use the comma operator so that this macro can be used without much 185 * additional code. For example, "return (EINVAL);" becomes 186 * "return (SET_ERROR(EINVAL));". Note that the argument will be evaluated 187 * twice, so it should not have side effects (e.g. something like: 188 * "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice). 189 */ 190#define SET_ERROR(err) (ZFS_SET_ERROR(err), err) 191#else /* !illumos */ 192 193#define DTRACE_PROBE(a) ((void)0) 194#define DTRACE_PROBE1(a, b, c) ((void)0) 195#define DTRACE_PROBE2(a, b, c, d, e) ((void)0) 196#define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0) 197#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0) 198 199#define SET_ERROR(err) (err) 200#endif /* !illumos */ 201 202/* 203 * Threads 204 */ 205#define curthread ((void *)(uintptr_t)thr_self()) 206 207typedef struct kthread kthread_t; 208 209#define thread_create(stk, stksize, func, arg, len, pp, state, pri) \ 210 zk_thread_create(func, arg) 211#define thread_exit() thr_exit(NULL) 212#define thread_join(t) panic("libzpool cannot join threads") 213 214#define newproc(f, a, cid, pri, ctp, pid) (ENOSYS) 215 216/* in libzpool, p0 exists only to have its address taken */ 217struct proc { 218 uintptr_t this_is_never_used_dont_dereference_it; 219}; 220 221extern struct proc p0; 222#define curproc (&p0) 223 224#define PS_NONE -1 225 226extern kthread_t *zk_thread_create(void (*func)(), void *arg); 227 228#define issig(why) (FALSE) 229#define ISSIG(thr, why) (FALSE) 230 231/* 232 * Mutexes 233 */ 234typedef struct kmutex { 235 void *m_owner; 236 boolean_t initialized; 237 mutex_t m_lock; 238} kmutex_t; 239 240#define MUTEX_DEFAULT USYNC_THREAD 241#undef MUTEX_HELD 242#undef MUTEX_NOT_HELD 243#define MUTEX_HELD(m) ((m)->m_owner == curthread) 244#define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m)) 245#define _mutex_held(m) pthread_mutex_isowned_np(m) 246 247/* 248 * Argh -- we have to get cheesy here because the kernel and userland 249 * have different signatures for the same routine. 250 */ 251//extern int _mutex_init(mutex_t *mp, int type, void *arg); 252//extern int _mutex_destroy(mutex_t *mp); 253//extern int _mutex_owned(mutex_t *mp); 254 255#define mutex_init(mp, b, c, d) zmutex_init((kmutex_t *)(mp)) 256#define mutex_destroy(mp) zmutex_destroy((kmutex_t *)(mp)) 257#define mutex_owned(mp) zmutex_owned((kmutex_t *)(mp)) 258 259extern void zmutex_init(kmutex_t *mp); 260extern void zmutex_destroy(kmutex_t *mp); 261extern int zmutex_owned(kmutex_t *mp); 262extern void mutex_enter(kmutex_t *mp); 263extern void mutex_exit(kmutex_t *mp); 264extern int mutex_tryenter(kmutex_t *mp); 265extern void *mutex_owner(kmutex_t *mp); 266 267/* 268 * RW locks 269 */ 270typedef struct krwlock { 271 int rw_count; 272 void *rw_owner; 273 boolean_t initialized; 274 rwlock_t rw_lock; 275} krwlock_t; 276 277typedef int krw_t; 278 279#define RW_READER 0 280#define RW_WRITER 1 281#define RW_DEFAULT USYNC_THREAD 282 283#undef RW_READ_HELD 284#define RW_READ_HELD(x) ((x)->rw_owner == NULL && (x)->rw_count > 0) 285 286#undef RW_WRITE_HELD 287#define RW_WRITE_HELD(x) ((x)->rw_owner == curthread) 288#define RW_LOCK_HELD(x) rw_lock_held(x) 289 290#undef RW_LOCK_HELD 291#define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x)) 292 293extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg); 294extern void rw_destroy(krwlock_t *rwlp); 295extern void rw_enter(krwlock_t *rwlp, krw_t rw); 296extern int rw_tryenter(krwlock_t *rwlp, krw_t rw); 297extern int rw_tryupgrade(krwlock_t *rwlp); 298extern void rw_exit(krwlock_t *rwlp); 299extern int rw_lock_held(krwlock_t *rwlp); 300#define rw_downgrade(rwlp) do { } while (0) 301 302extern uid_t crgetuid(cred_t *cr); 303extern uid_t crgetruid(cred_t *cr); 304extern gid_t crgetgid(cred_t *cr); 305extern int crgetngroups(cred_t *cr); 306extern gid_t *crgetgroups(cred_t *cr); 307 308/* 309 * Condition variables 310 */ 311typedef cond_t kcondvar_t; 312 313#define CV_DEFAULT USYNC_THREAD 314 315extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg); 316extern void cv_destroy(kcondvar_t *cv); 317extern void cv_wait(kcondvar_t *cv, kmutex_t *mp); 318extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime); 319extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim, 320 hrtime_t res, int flag); 321extern void cv_signal(kcondvar_t *cv); 322extern void cv_broadcast(kcondvar_t *cv); 323 324/* 325 * Thread-specific data 326 */ 327#define tsd_get(k) pthread_getspecific(k) 328#define tsd_set(k, v) pthread_setspecific(k, v) 329#define tsd_create(kp, d) pthread_key_create(kp, d) 330#define tsd_destroy(kp) /* nothing */ 331 332/* 333 * Kernel memory 334 */ 335#define KM_SLEEP UMEM_NOFAIL 336#define KM_PUSHPAGE KM_SLEEP 337#define KM_NOSLEEP UMEM_DEFAULT 338#define KM_NODEBUG 0 339#define KMC_NODEBUG UMC_NODEBUG 340#define KMC_NOTOUCH 0 /* not needed for userland caches */ 341#define kmem_alloc(_s, _f) umem_alloc(_s, _f) 342#define kmem_zalloc(_s, _f) umem_zalloc(_s, _f) 343#define kmem_free(_b, _s) umem_free(_b, _s) 344#define kmem_size() (physmem * PAGESIZE) 345#define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \ 346 umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) 347#define kmem_cache_destroy(_c) umem_cache_destroy(_c) 348#define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f) 349#define kmem_cache_free(_c, _b) umem_cache_free(_c, _b) 350#define kmem_debugging() 0 351#define kmem_cache_reap_now(_c) /* nothing */ 352#define kmem_cache_set_move(_c, _cb) /* nothing */ 353#define POINTER_INVALIDATE(_pp) /* nothing */ 354#define POINTER_IS_VALID(_p) 0 355 356typedef umem_cache_t kmem_cache_t; 357 358typedef enum kmem_cbrc { 359 KMEM_CBRC_YES, 360 KMEM_CBRC_NO, 361 KMEM_CBRC_LATER, 362 KMEM_CBRC_DONT_NEED, 363 KMEM_CBRC_DONT_KNOW 364} kmem_cbrc_t; 365 366/* 367 * Task queues 368 */ 369typedef struct taskq taskq_t; 370typedef uintptr_t taskqid_t; 371typedef void (task_func_t)(void *); 372 373typedef struct taskq_ent { 374 struct taskq_ent *tqent_next; 375 struct taskq_ent *tqent_prev; 376 task_func_t *tqent_func; 377 void *tqent_arg; 378 uintptr_t tqent_flags; 379} taskq_ent_t; 380 381#define TQENT_FLAG_PREALLOC 0x1 /* taskq_dispatch_ent used */ 382 383#define TASKQ_PREPOPULATE 0x0001 384#define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */ 385#define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */ 386#define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */ 387#define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */ 388 389#define TQ_SLEEP KM_SLEEP /* Can block for memory */ 390#define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */ 391#define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */ 392#define TQ_FRONT 0x08 /* Queue in front */ 393 394 395extern taskq_t *system_taskq; 396 397extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t); 398#define taskq_create_proc(a, b, c, d, e, p, f) \ 399 (taskq_create(a, b, c, d, e, f)) 400#define taskq_create_sysdc(a, b, d, e, p, dc, f) \ 401 (taskq_create(a, b, maxclsyspri, d, e, f)) 402extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); 403extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t, 404 taskq_ent_t *); 405extern void taskq_destroy(taskq_t *); 406extern void taskq_wait(taskq_t *); 407extern int taskq_member(taskq_t *, void *); 408extern void system_taskq_init(void); 409extern void system_taskq_fini(void); 410 411#define taskq_dispatch_safe(tq, func, arg, flags, task) \ 412 taskq_dispatch((tq), (func), (arg), (flags)) 413 414#define XVA_MAPSIZE 3 415#define XVA_MAGIC 0x78766174 416 417/* 418 * vnodes 419 */ 420typedef struct vnode { 421 uint64_t v_size; 422 int v_fd; 423 char *v_path; 424} vnode_t; 425 426#define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */ 427 428typedef struct xoptattr { 429 timestruc_t xoa_createtime; /* Create time of file */ 430 uint8_t xoa_archive; 431 uint8_t xoa_system; 432 uint8_t xoa_readonly; 433 uint8_t xoa_hidden; 434 uint8_t xoa_nounlink; 435 uint8_t xoa_immutable; 436 uint8_t xoa_appendonly; 437 uint8_t xoa_nodump; 438 uint8_t xoa_settable; 439 uint8_t xoa_opaque; 440 uint8_t xoa_av_quarantined; 441 uint8_t xoa_av_modified; 442 uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ]; 443 uint8_t xoa_reparse; 444 uint8_t xoa_offline; 445 uint8_t xoa_sparse; 446} xoptattr_t; 447 448typedef struct vattr { 449 uint_t va_mask; /* bit-mask of attributes */ 450 u_offset_t va_size; /* file size in bytes */ 451} vattr_t; 452 453 454typedef struct xvattr { 455 vattr_t xva_vattr; /* Embedded vattr structure */ 456 uint32_t xva_magic; /* Magic Number */ 457 uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */ 458 uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */ 459 uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */ 460 uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */ 461 xoptattr_t xva_xoptattrs; /* Optional attributes */ 462} xvattr_t; 463 464typedef struct vsecattr { 465 uint_t vsa_mask; /* See below */ 466 int vsa_aclcnt; /* ACL entry count */ 467 void *vsa_aclentp; /* pointer to ACL entries */ 468 int vsa_dfaclcnt; /* default ACL entry count */ 469 void *vsa_dfaclentp; /* pointer to default ACL entries */ 470 size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */ 471} vsecattr_t; 472 473#define AT_TYPE 0x00001 474#define AT_MODE 0x00002 475#define AT_UID 0x00004 476#define AT_GID 0x00008 477#define AT_FSID 0x00010 478#define AT_NODEID 0x00020 479#define AT_NLINK 0x00040 480#define AT_SIZE 0x00080 481#define AT_ATIME 0x00100 482#define AT_MTIME 0x00200 483#define AT_CTIME 0x00400 484#define AT_RDEV 0x00800 485#define AT_BLKSIZE 0x01000 486#define AT_NBLOCKS 0x02000 487#define AT_SEQ 0x08000 488#define AT_XVATTR 0x10000 489 490#define CRCREAT 0 491 492extern int fop_getattr(vnode_t *vp, vattr_t *vap); 493 494#define VOP_CLOSE(vp, f, c, o, cr, ct) 0 495#define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0 496#define VOP_GETATTR(vp, vap, cr) fop_getattr((vp), (vap)); 497 498#define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd) 499 500#define VN_RELE(vp) vn_close(vp, 0, NULL, NULL) 501#define VN_RELE_ASYNC(vp, taskq) vn_close(vp, 0, NULL, NULL) 502 503#define vn_lock(vp, type) 504#define VOP_UNLOCK(vp, type) 505#ifdef VFS_LOCK_GIANT 506#undef VFS_LOCK_GIANT 507#endif 508#define VFS_LOCK_GIANT(mp) 0 509#ifdef VFS_UNLOCK_GIANT 510#undef VFS_UNLOCK_GIANT 511#endif 512#define VFS_UNLOCK_GIANT(vfslocked) 513 514extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp, 515 int x2, int x3); 516extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp, 517 int x2, int x3, vnode_t *vp, int fd); 518extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len, 519 offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp); 520extern void vn_close(vnode_t *vp, int openflag, cred_t *cr, kthread_t *td); 521 522#define vn_remove(path, x1, x2) remove(path) 523#define vn_rename(from, to, seg) rename((from), (to)) 524#define vn_is_readonly(vp) B_FALSE 525 526extern vnode_t *rootdir; 527 528#include <sys/file.h> /* for FREAD, FWRITE, etc */ 529#define FTRUNC O_TRUNC 530 531/* 532 * Random stuff 533 */ 534#define ddi_get_lbolt() (gethrtime() >> 23) 535#define ddi_get_lbolt64() (gethrtime() >> 23) 536#define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */ 537 538extern void delay(clock_t ticks); 539 540#define SEC_TO_TICK(sec) ((sec) * hz) 541#define NSEC_TO_TICK(usec) ((usec) / (NANOSEC / hz)) 542 543#define gethrestime_sec() time(NULL) 544#define gethrestime(t) \ 545 do {\ 546 (t)->tv_sec = gethrestime_sec();\ 547 (t)->tv_nsec = 0;\ 548 } while (0); 549 550#define max_ncpus 64 551 552#define minclsyspri 60 553#define maxclsyspri 99 554 555#define CPU_SEQID (thr_self() & (max_ncpus - 1)) 556 557#define kcred NULL 558#define CRED() NULL 559 560#ifndef ptob 561#define ptob(x) ((x) * PAGESIZE) 562#endif 563 564extern uint64_t physmem; 565 566extern int highbit(ulong_t i); 567extern int random_get_bytes(uint8_t *ptr, size_t len); 568extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len); 569 570extern void kernel_init(int); 571extern void kernel_fini(void); 572 573struct spa; 574extern void nicenum(uint64_t num, char *buf); 575extern void show_pool_stats(struct spa *); 576 577typedef struct callb_cpr { 578 kmutex_t *cc_lockp; 579} callb_cpr_t; 580 581#define CALLB_CPR_INIT(cp, lockp, func, name) { \ 582 (cp)->cc_lockp = lockp; \ 583} 584 585#define CALLB_CPR_SAFE_BEGIN(cp) { \ 586 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 587} 588 589#define CALLB_CPR_SAFE_END(cp, lockp) { \ 590 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 591} 592 593#define CALLB_CPR_EXIT(cp) { \ 594 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 595 mutex_exit((cp)->cc_lockp); \ 596} 597 598#define zone_dataset_visible(x, y) (1) 599#define INGLOBALZONE(z) (1) 600 601extern char *kmem_asprintf(const char *fmt, ...); 602#define strfree(str) kmem_free((str), strlen(str) + 1) 603 604/* 605 * Hostname information 606 */ 607extern struct utsname utsname; 608extern char hw_serial[]; /* for userland-emulated hostid access */ 609extern int ddi_strtoul(const char *str, char **nptr, int base, 610 unsigned long *result); 611 612extern int ddi_strtoull(const char *str, char **nptr, int base, 613 u_longlong_t *result); 614 615/* ZFS Boot Related stuff. */ 616 617struct _buf { 618 intptr_t _fd; 619}; 620 621struct bootstat { 622 uint64_t st_size; 623}; 624 625typedef struct ace_object { 626 uid_t a_who; 627 uint32_t a_access_mask; 628 uint16_t a_flags; 629 uint16_t a_type; 630 uint8_t a_obj_type[16]; 631 uint8_t a_inherit_obj_type[16]; 632} ace_object_t; 633 634 635#define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05 636#define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06 637#define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07 638#define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08 639 640extern struct _buf *kobj_open_file(char *name); 641extern int kobj_read_file(struct _buf *file, char *buf, unsigned size, 642 unsigned off); 643extern void kobj_close_file(struct _buf *file); 644extern int kobj_get_filesize(struct _buf *file, uint64_t *size); 645extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr); 646extern int zfs_secpolicy_rename_perms(const char *from, const char *to, 647 cred_t *cr); 648extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr); 649extern zoneid_t getzoneid(void); 650/* Random compatibility stuff. */ 651#define lbolt (gethrtime() >> 23) 652#define lbolt64 (gethrtime() >> 23) 653 654extern uint64_t physmem; 655 656#define gethrestime_sec() time(NULL) 657 658#define pwrite64(d, p, n, o) pwrite(d, p, n, o) 659#define readdir64(d) readdir(d) 660#define SIGPENDING(td) (0) 661#define root_mount_wait() do { } while (0) 662#define root_mounted() (1) 663 664struct file { 665 void *dummy; 666}; 667 668#define FCREAT O_CREAT 669#define FOFFMAX 0x0 670 671/* SID stuff */ 672typedef struct ksiddomain { 673 uint_t kd_ref; 674 uint_t kd_len; 675 char *kd_name; 676} ksiddomain_t; 677 678ksiddomain_t *ksid_lookupdomain(const char *); 679void ksiddomain_rele(ksiddomain_t *); 680 681typedef uint32_t idmap_rid_t; 682 683#define DDI_SLEEP KM_SLEEP 684#define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) (0) 685 686#define SX_SYSINIT(name, lock, desc) 687 688#define SYSCTL_DECL(...) 689#define SYSCTL_NODE(...) 690#define SYSCTL_INT(...) 691#define SYSCTL_UINT(...) 692#define SYSCTL_ULONG(...) 693#define SYSCTL_QUAD(...) 694#define SYSCTL_UQUAD(...) 695#ifdef TUNABLE_INT 696#undef TUNABLE_INT 697#undef TUNABLE_ULONG 698#undef TUNABLE_QUAD 699#endif 700#define TUNABLE_INT(...) 701#define TUNABLE_ULONG(...) 702#define TUNABLE_QUAD(...) 703 704/* Errors */ 705 706#ifndef ERESTART 707#define ERESTART (-1) 708#endif 709 710#ifdef illumos 711/* 712 * Cyclic information 713 */ 714extern kmutex_t cpu_lock; 715 716typedef uintptr_t cyclic_id_t; 717typedef uint16_t cyc_level_t; 718typedef void (*cyc_func_t)(void *); 719 720#define CY_LOW_LEVEL 0 721#define CY_INFINITY INT64_MAX 722#define CYCLIC_NONE ((cyclic_id_t)0) 723 724typedef struct cyc_time { 725 hrtime_t cyt_when; 726 hrtime_t cyt_interval; 727} cyc_time_t; 728 729typedef struct cyc_handler { 730 cyc_func_t cyh_func; 731 void *cyh_arg; 732 cyc_level_t cyh_level; 733} cyc_handler_t; 734 735extern cyclic_id_t cyclic_add(cyc_handler_t *, cyc_time_t *); 736extern void cyclic_remove(cyclic_id_t); 737extern int cyclic_reprogram(cyclic_id_t, hrtime_t); 738#endif /* illumos */ 739 740#ifdef __cplusplus 741} 742#endif 743 744#endif /* _SYS_ZFS_CONTEXT_H */ 745