include/sys/zfs_context.h

   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 2009 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _SYS_ZFS_CONTEXT_H
  27 #define _SYS_ZFS_CONTEXT_H
  28
  29 #ifdef __KERNEL__
  30
  31 #include <sys/note.h>
  32 #include <sys/types.h>
  33 #include <sys/t_lock.h>
  34 #include <sys/atomic.h>
  35 #include <sys/sysmacros.h>
  36 #include <sys/bitmap.h>
  37 #include <sys/cmn_err.h>
  38 #include <sys/kmem.h>
  39 #include <sys/taskq.h>
  40 #include <sys/buf.h>
  41 #include <sys/param.h>
  42 #include <sys/systm.h>
  43 #include <sys/cpuvar.h>
  44 #include <sys/kobj.h>
  45 #include <sys/conf.h>
  46 #include <sys/disp.h>
  47 #include <sys/debug.h>
  48 #include <sys/random.h>
  49 #include <sys/byteorder.h>
  50 #include <sys/systm.h>
  51 #include <sys/list.h>
  52 #include <sys/uio_impl.h>
  53 #include <sys/dirent.h>
  54 #include <sys/time.h>
  55 #include <vm/seg_kmem.h>
  56 #include <sys/zone.h>
  57 #include <sys/zfs_debug.h>
  58 #include <sys/fm/fs/zfs.h>
  59 #include <sys/sunddi.h>
  60 #include <linux/dcache_compat.h>
  61
  62 #else /* _KERNEL */
  63
  64 #define _SYS_MUTEX_H
  65 #define _SYS_RWLOCK_H
  66 #define _SYS_CONDVAR_H
  67 #define _SYS_SYSTM_H
  68 #define _SYS_DEBUG_H
  69 #define _SYS_T_LOCK_H
  70 #define _SYS_VNODE_H
  71 #define _SYS_VFS_H
  72 #define _SYS_SUNDDI_H
  73 #define _SYS_CALLB_H
  74
  75 #include <stdio.h>
  76 #include <stdlib.h>
  77 #include <stddef.h>
  78 #include <stdarg.h>
  79 #include <fcntl.h>
  80 #include <unistd.h>
  81 #include <errno.h>
  82 #include <string.h>
  83 #include <strings.h>
  84 #include <pthread.h>
  85 #include <assert.h>
  86 #include <alloca.h>
  87 #include <umem.h>
  88 #include <limits.h>
  89 #include <atomic.h>
  90 #include <dirent.h>
  91 #include <time.h>
  92 #include <sys/note.h>
  93 #include <sys/types.h>
  94 #include <sys/cred.h>
  95 #include <sys/sysmacros.h>
  96 #include <sys/bitmap.h>
  97 #include <sys/resource.h>
  98 #include <sys/byteorder.h>
  99 #include <sys/list.h>
 100 #include <sys/uio.h>
 101 #include <sys/zfs_debug.h>
 102 #include <sys/sdt.h>
 103 #include <sys/kstat.h>
 104 #include <sys/u8_textprep.h>
 105 #include <sys/fm/fs/zfs.h>
 106 #include <sys/sunddi.h>
 107
 108 /*
 109  * Stack
 110  */
 111
 112 #define  noinline       __attribute__((noinline))
 113
 114 /*
 115  * Debugging
 116  */
 117
 118 /*
 119  * Note that we are not using the debugging levels.
 120  */
 121
 122 #define CE_CONT         0       /* continuation         */
 123 #define CE_NOTE         1       /* notice               */
 124 #define CE_WARN         2       /* warning              */
 125 #define CE_PANIC        3       /* panic                */
 126 #define CE_IGNORE       4       /* print nothing        */
 127
 128 extern int aok;
 129
 130 /*
 131  * ZFS debugging
 132  */
 133
 134 #ifdef ZFS_DEBUG
 135 extern void dprintf_setup(int *argc, char **argv);
 136 #endif /* ZFS_DEBUG */
 137
 138 extern void cmn_err(int, const char *, ...);
 139 extern void vcmn_err(int, const char *, __va_list);
 140 extern void panic(const char *, ...);
 141 extern void vpanic(const char *, __va_list);
 142
 143 #define fm_panic        panic
 144
 145 /*
 146  * DTrace SDT probes have different signatures in userland than they do in
 147  * kernel.  If they're being used in kernel code, re-define them out of
 148  * existence for their counterparts in libzpool.
 149  */
 150
 151 #ifdef DTRACE_PROBE
 152 #undef  DTRACE_PROBE
 153 #define DTRACE_PROBE(a) ((void)0)
 154 #endif  /* DTRACE_PROBE */
 155
 156 #ifdef DTRACE_PROBE1
 157 #undef  DTRACE_PROBE1
 158 #define DTRACE_PROBE1(a, b, c)  ((void)0)
 159 #endif  /* DTRACE_PROBE1 */
 160
 161 #ifdef DTRACE_PROBE2
 162 #undef  DTRACE_PROBE2
 163 #define DTRACE_PROBE2(a, b, c, d, e)    ((void)0)
 164 #endif  /* DTRACE_PROBE2 */
 165
 166 #ifdef DTRACE_PROBE3
 167 #undef  DTRACE_PROBE3
 168 #define DTRACE_PROBE3(a, b, c, d, e, f, g)      ((void)0)
 169 #endif  /* DTRACE_PROBE3 */
 170
 171 #ifdef DTRACE_PROBE4
 172 #undef  DTRACE_PROBE4
 173 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i)        ((void)0)
 174 #endif  /* DTRACE_PROBE4 */
 175
 176 /*
 177  * Threads
 178  */
 179 #define TS_MAGIC                0x72f158ab4261e538ull
 180 #define TS_RUN                  0x00000002
 181 #ifdef __linux__
 182 #define STACK_SIZE              8192    /* Linux x86 and amd64 */
 183 #else
 184 #define STACK_SIZE              24576   /* Solaris */
 185 #endif
 186
 187 #ifdef NPTL_GUARD_WITHIN_STACK
 188 #define EXTRA_GUARD_BYTES       PAGESIZE
 189 #else
 190 #define EXTRA_GUARD_BYTES       0
 191 #endif
 192
 193 /* in libzpool, p0 exists only to have its address taken */
 194 typedef struct proc {
 195         uintptr_t       this_is_never_used_dont_dereference_it;
 196 } proc_t;
 197
 198 extern struct proc p0;
 199
 200 typedef void (*thread_func_t)(void *);
 201 typedef void (*thread_func_arg_t)(void *);
 202 typedef pthread_t kt_did_t;
 203
 204 typedef struct kthread {
 205         kt_did_t        t_tid;
 206         thread_func_t   t_func;
 207         void *          t_arg;
 208 } kthread_t;
 209
 210 #define tsd_get(key)                    pthread_getspecific(key)
 211 #define tsd_set(key, val)               pthread_setspecific(key, val)
 212 #define curthread                       zk_thread_current()
 213 #define thread_exit                     zk_thread_exit
 214 #define thread_create(stk, stksize, func, arg, len, pp, state, pri)     \
 215         zk_thread_create(stk, stksize, (thread_func_t)func, arg,        \
 216                          len, NULL, state, pri)
 217 #define thread_join(t)                  zk_thread_join(t)
 218 #define newproc(f,a,cid,pri,ctp,pid)    (ENOSYS)
 219
 220 extern kthread_t *zk_thread_current(void);
 221 extern void zk_thread_exit(void);
 222 extern kthread_t *zk_thread_create(caddr_t stk, size_t  stksize,
 223         thread_func_t func, void *arg, size_t len,
 224         proc_t *pp, int state, pri_t pri);
 225 extern void zk_thread_join(kt_did_t tid);
 226
 227 #define PS_NONE         -1
 228
 229 #define issig(why)      (FALSE)
 230 #define ISSIG(thr, why) (FALSE)
 231
 232 /*
 233  * Mutexes
 234  */
 235 #define MTX_MAGIC       0x9522f51362a6e326ull
 236 #define MTX_INIT        ((void *)NULL)
 237 #define MTX_DEST        ((void *)-1UL)
 238
 239 typedef struct kmutex {
 240         void            *m_owner;
 241         uint64_t        m_magic;
 242         pthread_mutex_t m_lock;
 243 } kmutex_t;
 244
 245 #define MUTEX_DEFAULT   0
 246 #define MUTEX_HELD(m)   ((m)->m_owner == curthread)
 247 #define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m))
 248
 249 extern void mutex_init(kmutex_t *mp, char *name, int type, void *cookie);
 250 extern void mutex_destroy(kmutex_t *mp);
 251 extern void mutex_enter(kmutex_t *mp);
 252 extern void mutex_exit(kmutex_t *mp);
 253 extern int mutex_tryenter(kmutex_t *mp);
 254 extern void *mutex_owner(kmutex_t *mp);
 255 extern int mutex_held(kmutex_t *mp);
 256
 257 /*
 258  * RW locks
 259  */
 260 #define RW_MAGIC        0x4d31fb123648e78aull
 261 #define RW_INIT         ((void *)NULL)
 262 #define RW_DEST         ((void *)-1UL)
 263
 264 typedef struct krwlock {
 265         void                    *rw_owner;
 266         void                    *rw_wr_owner;
 267         uint64_t                rw_magic;
 268         pthread_rwlock_t        rw_lock;
 269         uint_t                  rw_readers;
 270 } krwlock_t;
 271
 272 typedef int krw_t;
 273
 274 #define RW_READER       0
 275 #define RW_WRITER       1
 276 #define RW_DEFAULT      RW_READER
 277
 278 #define RW_READ_HELD(x)         ((x)->rw_readers > 0)
 279 #define RW_WRITE_HELD(x)        ((x)->rw_wr_owner == curthread)
 280 #define RW_LOCK_HELD(x)         (RW_READ_HELD(x) || RW_WRITE_HELD(x))
 281
 282 extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg);
 283 extern void rw_destroy(krwlock_t *rwlp);
 284 extern void rw_enter(krwlock_t *rwlp, krw_t rw);
 285 extern int rw_tryenter(krwlock_t *rwlp, krw_t rw);
 286 extern int rw_tryupgrade(krwlock_t *rwlp);
 287 extern void rw_exit(krwlock_t *rwlp);
 288 #define rw_downgrade(rwlp) do { } while (0)
 289
 290 extern uid_t crgetuid(cred_t *cr);
 291 extern gid_t crgetgid(cred_t *cr);
 292 extern int crgetngroups(cred_t *cr);
 293 extern gid_t *crgetgroups(cred_t *cr);
 294
 295 /*
 296  * Condition variables
 297  */
 298 #define CV_MAGIC        0xd31ea9a83b1b30c4ull
 299
 300 typedef struct kcondvar {
 301         uint64_t                cv_magic;
 302         pthread_cond_t          cv;
 303 } kcondvar_t;
 304
 305 #define CV_DEFAULT      0
 306
 307 extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg);
 308 extern void cv_destroy(kcondvar_t *cv);
 309 extern void cv_wait(kcondvar_t *cv, kmutex_t *mp);
 310 extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime);
 311 extern void cv_signal(kcondvar_t *cv);
 312 extern void cv_broadcast(kcondvar_t *cv);
 313 #define cv_timedwait_interruptible(cv, mp, at)  cv_timedwait(cv, mp, at);
 314
 315 /*
 316  * kstat creation, installation and deletion
 317  */
 318 extern kstat_t *kstat_create(char *, int,
 319     char *, char *, uchar_t, ulong_t, uchar_t);
 320 extern void kstat_install(kstat_t *);
 321 extern void kstat_delete(kstat_t *);
 322
 323 /*
 324  * Kernel memory
 325  */
 326 #define KM_SLEEP                UMEM_NOFAIL
 327 #define KM_PUSHPAGE             KM_SLEEP
 328 #define KM_NOSLEEP              UMEM_DEFAULT
 329 #define KM_NODEBUG              0x0
 330 #define KMC_NODEBUG             UMC_NODEBUG
 331 #define kmem_alloc(_s, _f)      umem_alloc(_s, _f)
 332 #define kmem_zalloc(_s, _f)     umem_zalloc(_s, _f)
 333 #define kmem_free(_b, _s)       umem_free(_b, _s)
 334 #define vmem_alloc(_s, _f)      kmem_alloc(_s, _f)
 335 #define vmem_zalloc(_s, _f)     kmem_zalloc(_s, _f)
 336 #define vmem_free(_b, _s)       kmem_free(_b, _s)
 337 #define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \
 338         umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i)
 339 #define kmem_cache_destroy(_c)  umem_cache_destroy(_c)
 340 #define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f)
 341 #define kmem_cache_free(_c, _b) umem_cache_free(_c, _b)
 342 #define kmem_debugging()        0
 343 #define kmem_cache_reap_now(_c)         /* nothing */
 344 #define kmem_cache_set_move(_c, _cb)    /* nothing */
 345 #define POINTER_INVALIDATE(_pp)         /* nothing */
 346 #define POINTER_IS_VALID(_p)    0
 347
 348 typedef umem_cache_t kmem_cache_t;
 349
 350 typedef enum kmem_cbrc {
 351         KMEM_CBRC_YES,
 352         KMEM_CBRC_NO,
 353         KMEM_CBRC_LATER,
 354         KMEM_CBRC_DONT_NEED,
 355         KMEM_CBRC_DONT_KNOW
 356 } kmem_cbrc_t;
 357
 358 /*
 359  * Task queues
 360  */
 361 typedef struct taskq taskq_t;
 362 typedef uintptr_t taskqid_t;
 363 typedef void (task_func_t)(void *);
 364
 365 #define TASKQ_PREPOPULATE       0x0001
 366 #define TASKQ_CPR_SAFE          0x0002  /* Use CPR safe protocol */
 367 #define TASKQ_DYNAMIC           0x0004  /* Use dynamic thread scheduling */
 368 #define TASKQ_THREADS_CPU_PCT   0x0008  /* Scale # threads by # cpus */
 369 #define TASKQ_DC_BATCH          0x0010  /* Mark threads as batch */
 370
 371 #define TQ_SLEEP        KM_SLEEP        /* Can block for memory */
 372 #define TQ_NOSLEEP      KM_NOSLEEP      /* cannot block for memory; may fail */
 373 #define TQ_NOQUEUE      0x02            /* Do not enqueue if can't dispatch */
 374 #define TQ_FRONT        0x08            /* Queue in front */
 375
 376 extern taskq_t *system_taskq;
 377
 378 extern taskq_t  *taskq_create(const char *, int, pri_t, int, int, uint_t);
 379 #define taskq_create_proc(a, b, c, d, e, p, f) \
 380             (taskq_create(a, b, c, d, e, f))
 381 #define taskq_create_sysdc(a, b, d, e, p, dc, f) \
 382             (taskq_create(a, b, maxclsyspri, d, e, f))
 383 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
 384 extern void     taskq_destroy(taskq_t *);
 385 extern void     taskq_wait(taskq_t *);
 386 extern int      taskq_member(taskq_t *, kthread_t *);
 387 extern void     system_taskq_init(void);
 388 extern void     system_taskq_fini(void);
 389
 390 #define XVA_MAPSIZE     3
 391 #define XVA_MAGIC       0x78766174
 392
 393 /*
 394  * vnodes
 395  */
 396 typedef struct vnode {
 397         uint64_t        v_size;
 398         int             v_fd;
 399         char            *v_path;
 400 } vnode_t;
 401
 402 #define AV_SCANSTAMP_SZ 32              /* length of anti-virus scanstamp */
 403
 404 typedef struct xoptattr {
 405         timestruc_t     xoa_createtime; /* Create time of file */
 406         uint8_t         xoa_archive;
 407         uint8_t         xoa_system;
 408         uint8_t         xoa_readonly;
 409         uint8_t         xoa_hidden;
 410         uint8_t         xoa_nounlink;
 411         uint8_t         xoa_immutable;
 412         uint8_t         xoa_appendonly;
 413         uint8_t         xoa_nodump;
 414         uint8_t         xoa_settable;
 415         uint8_t         xoa_opaque;
 416         uint8_t         xoa_av_quarantined;
 417         uint8_t         xoa_av_modified;
 418         uint8_t         xoa_av_scanstamp[AV_SCANSTAMP_SZ];
 419         uint8_t         xoa_reparse;
 420         uint8_t         xoa_offline;
 421         uint8_t         xoa_sparse;
 422 } xoptattr_t;
 423
 424 typedef struct vattr {
 425         uint_t          va_mask;        /* bit-mask of attributes */
 426         u_offset_t      va_size;        /* file size in bytes */
 427 } vattr_t;
 428
 429
 430 typedef struct xvattr {
 431         vattr_t         xva_vattr;      /* Embedded vattr structure */
 432         uint32_t        xva_magic;      /* Magic Number */
 433         uint32_t        xva_mapsize;    /* Size of attr bitmap (32-bit words) */
 434         uint32_t        *xva_rtnattrmapp;       /* Ptr to xva_rtnattrmap[] */
 435         uint32_t        xva_reqattrmap[XVA_MAPSIZE];    /* Requested attrs */
 436         uint32_t        xva_rtnattrmap[XVA_MAPSIZE];    /* Returned attrs */
 437         xoptattr_t      xva_xoptattrs;  /* Optional attributes */
 438 } xvattr_t;
 439
 440 typedef struct vsecattr {
 441         uint_t          vsa_mask;       /* See below */
 442         int             vsa_aclcnt;     /* ACL entry count */
 443         void            *vsa_aclentp;   /* pointer to ACL entries */
 444         int             vsa_dfaclcnt;   /* default ACL entry count */
 445         void            *vsa_dfaclentp; /* pointer to default ACL entries */
 446         size_t          vsa_aclentsz;   /* ACE size in bytes of vsa_aclentp */
 447 } vsecattr_t;
 448
 449 #define AT_TYPE         0x00001
 450 #define AT_MODE         0x00002
 451 #define AT_UID          0x00004
 452 #define AT_GID          0x00008
 453 #define AT_FSID         0x00010
 454 #define AT_NODEID       0x00020
 455 #define AT_NLINK        0x00040
 456 #define AT_SIZE         0x00080
 457 #define AT_ATIME        0x00100
 458 #define AT_MTIME        0x00200
 459 #define AT_CTIME        0x00400
 460 #define AT_RDEV         0x00800
 461 #define AT_BLKSIZE      0x01000
 462 #define AT_NBLOCKS      0x02000
 463 #define AT_SEQ          0x08000
 464 #define AT_XVATTR       0x10000
 465
 466 #define CRCREAT         0
 467
 468 extern int fop_getattr(vnode_t *vp, vattr_t *vap);
 469
 470 #define VOP_CLOSE(vp, f, c, o, cr, ct)  0
 471 #define VOP_PUTPAGE(vp, of, sz, fl, cr, ct)     0
 472 #define VOP_GETATTR(vp, vap, fl, cr, ct)  fop_getattr((vp), (vap));
 473
 474 #define VOP_FSYNC(vp, f, cr, ct)        fsync((vp)->v_fd)
 475
 476 #define VN_RELE(vp)     vn_close(vp)
 477
 478 extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp,
 479     int x2, int x3);
 480 extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp,
 481     int x2, int x3, vnode_t *vp, int fd);
 482 extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len,
 483     offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp);
 484 extern void vn_close(vnode_t *vp);
 485
 486 #define vn_remove(path, x1, x2)         remove(path)
 487 #define vn_rename(from, to, seg)        rename((from), (to))
 488 #define vn_is_readonly(vp)              B_FALSE
 489
 490 extern vnode_t *rootdir;
 491
 492 #include <sys/file.h>           /* for FREAD, FWRITE, etc */
 493
 494 /*
 495  * Random stuff
 496  */
 497 #define ddi_get_lbolt()         (gethrtime() >> 23)
 498 #define ddi_get_lbolt64()       (gethrtime() >> 23)
 499 #define hz      119     /* frequency when using gethrtime() >> 23 for lbolt */
 500
 501 extern void delay(clock_t ticks);
 502
 503 #define gethrestime_sec() time(NULL)
 504 #define gethrestime(t) \
 505         do {\
 506                 (t)->tv_sec = gethrestime_sec();\
 507                 (t)->tv_nsec = 0;\
 508         } while (0);
 509
 510 #define max_ncpus       64
 511
 512 #define minclsyspri     60
 513 #define maxclsyspri     99
 514
 515 #define CPU_SEQID       (pthread_self() & (max_ncpus - 1))
 516
 517 #define kcred           NULL
 518 #define CRED()          NULL
 519
 520 #define ptob(x)         ((x) * PAGESIZE)
 521
 522 extern uint64_t physmem;
 523
 524 extern int highbit(ulong_t i);
 525 extern int random_get_bytes(uint8_t *ptr, size_t len);
 526 extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len);
 527
 528 extern void kernel_init(int);
 529 extern void kernel_fini(void);
 530
 531 struct spa;
 532 extern void nicenum(uint64_t num, char *buf);
 533 extern void show_pool_stats(struct spa *);
 534
 535 typedef struct callb_cpr {
 536         kmutex_t        *cc_lockp;
 537 } callb_cpr_t;
 538
 539 #define CALLB_CPR_INIT(cp, lockp, func, name)   {               \
 540         (cp)->cc_lockp = lockp;                                 \
 541 }
 542
 543 #define CALLB_CPR_SAFE_BEGIN(cp) {                              \
 544         ASSERT(MUTEX_HELD((cp)->cc_lockp));                     \
 545 }
 546
 547 #define CALLB_CPR_SAFE_END(cp, lockp) {                         \
 548         ASSERT(MUTEX_HELD((cp)->cc_lockp));                     \
 549 }
 550
 551 #define CALLB_CPR_EXIT(cp) {                                    \
 552         ASSERT(MUTEX_HELD((cp)->cc_lockp));                     \
 553         mutex_exit((cp)->cc_lockp);                             \
 554 }
 555
 556 #define zone_dataset_visible(x, y)      (1)
 557 #define INGLOBALZONE(z)                 (1)
 558
 559 extern char *kmem_vasprintf(const char *fmt, va_list adx);
 560 extern char *kmem_asprintf(const char *fmt, ...);
 561 #define strfree(str) kmem_free((str), strlen(str)+1)
 562
 563 /*
 564  * Hostname information
 565  */
 566 extern char hw_serial[];        /* for userland-emulated hostid access */
 567 extern int ddi_strtoul(const char *str, char **nptr, int base,
 568     unsigned long *result);
 569
 570 extern int ddi_strtoull(const char *str, char **nptr, int base,
 571     u_longlong_t *result);
 572
 573 /* ZFS Boot Related stuff. */
 574
 575 struct _buf {
 576         intptr_t        _fd;
 577 };
 578
 579 struct bootstat {
 580         uint64_t st_size;
 581 };
 582
 583 typedef struct ace_object {
 584         uid_t           a_who;
 585         uint32_t        a_access_mask;
 586         uint16_t        a_flags;
 587         uint16_t        a_type;
 588         uint8_t         a_obj_type[16];
 589         uint8_t         a_inherit_obj_type[16];
 590 } ace_object_t;
 591
 592
 593 #define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE      0x05
 594 #define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE       0x06
 595 #define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE        0x07
 596 #define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE        0x08
 597
 598 extern struct _buf *kobj_open_file(char *name);
 599 extern int kobj_read_file(struct _buf *file, char *buf, unsigned size,
 600     unsigned off);
 601 extern void kobj_close_file(struct _buf *file);
 602 extern int kobj_get_filesize(struct _buf *file, uint64_t *size);
 603 extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
 604 extern int zfs_secpolicy_rename_perms(const char *from, const char *to,
 605     cred_t *cr);
 606 extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
 607 extern zoneid_t getzoneid(void);
 608
 609 /* SID stuff */
 610 typedef struct ksiddomain {
 611         uint_t  kd_ref;
 612         uint_t  kd_len;
 613         char    *kd_name;
 614 } ksiddomain_t;
 615
 616 ksiddomain_t *ksid_lookupdomain(const char *);
 617 void ksiddomain_rele(ksiddomain_t *);
 618
 619 #define DDI_SLEEP       KM_SLEEP
 620 #define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) \
 621         sysevent_post_event(_c, _d, _b, "libzpool", _e, _f)
 622
 623 #endif /* _KERNEL */
 624
 625 #endif  /* _SYS_ZFS_CONTEXT_H */