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.
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.
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]
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
26 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
27 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
28 * Copyright (c) 2012, 2015 by Delphix. All rights reserved.
31 #ifndef _SYS_ZFS_CONTEXT_H
32 #define _SYS_ZFS_CONTEXT_H
37 #include <sys/types.h>
38 #include <sys/t_lock.h>
39 #include <sys/atomic.h>
40 #include <sys/sysmacros.h>
41 #include <sys/bitmap.h>
42 #include <sys/cmn_err.h>
44 #include <sys/kmem_cache.h>
46 #include <sys/taskq.h>
48 #include <sys/param.h>
49 #include <sys/systm.h>
50 #include <sys/cpuvar.h>
54 #include <sys/debug.h>
55 #include <sys/random.h>
56 #include <sys/byteorder.h>
57 #include <sys/systm.h>
59 #include <sys/uio_impl.h>
60 #include <sys/dirent.h>
62 #include <vm/seg_kmem.h>
65 #include <sys/zfs_debug.h>
66 #include <sys/zfs_delay.h>
67 #include <sys/fm/fs/zfs.h>
68 #include <sys/sunddi.h>
69 #include <sys/ctype.h>
71 #include <sys/trace.h>
72 #include <linux/dcache_compat.h>
73 #include <linux/utsname_compat.h>
79 #define _SYS_CONDVAR_H
107 #include <sys/mman.h>
108 #include <sys/note.h>
109 #include <sys/types.h>
110 #include <sys/cred.h>
111 #include <sys/sysmacros.h>
112 #include <sys/bitmap.h>
113 #include <sys/resource.h>
114 #include <sys/byteorder.h>
115 #include <sys/list.h>
117 #include <sys/zfs_debug.h>
119 #include <sys/kstat.h>
120 #include <sys/u8_textprep.h>
121 #include <sys/fm/fs/zfs.h>
122 #include <sys/sunddi.h>
123 #include <sys/debug.h>
124 #include <sys/utsname.h>
130 #define noinline __attribute__((noinline))
137 * Note that we are not using the debugging levels.
140 #define CE_CONT 0 /* continuation */
141 #define CE_NOTE 1 /* notice */
142 #define CE_WARN 2 /* warning */
143 #define CE_PANIC 3 /* panic */
144 #define CE_IGNORE 4 /* print nothing */
150 extern void dprintf_setup(int *argc, char **argv);
152 extern void cmn_err(int, const char *, ...);
153 extern void vcmn_err(int, const char *, va_list);
154 extern void panic(const char *, ...);
155 extern void vpanic(const char *, va_list);
157 #define fm_panic panic
162 * DTrace SDT probes have different signatures in userland than they do in
163 * the kernel. If they're being used in kernel code, re-define them out of
164 * existence for their counterparts in libzpool.
166 * Here's an example of how to use the set-error probes in userland:
167 * zfs$target:::set-error /arg0 == EBUSY/ {stack();}
169 * Here's an example of how to use DTRACE_PROBE probes in userland:
170 * If there is a probe declared as follows:
171 * DTRACE_PROBE2(zfs__probe_name, uint64_t, blkid, dnode_t *, dn);
172 * Then you can use it as follows:
173 * zfs$target:::probe2 /copyinstr(arg0) == "zfs__probe_name"/
174 * {printf("%u %p\n", arg1, arg2);}
179 #endif /* DTRACE_PROBE */
180 #define DTRACE_PROBE(a) \
185 #endif /* DTRACE_PROBE1 */
186 #define DTRACE_PROBE1(a, b, c) \
187 ZFS_PROBE1(#a, (unsigned long)c)
191 #endif /* DTRACE_PROBE2 */
192 #define DTRACE_PROBE2(a, b, c, d, e) \
193 ZFS_PROBE2(#a, (unsigned long)c, (unsigned long)e)
197 #endif /* DTRACE_PROBE3 */
198 #define DTRACE_PROBE3(a, b, c, d, e, f, g) \
199 ZFS_PROBE3(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g)
203 #endif /* DTRACE_PROBE4 */
204 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) \
205 ZFS_PROBE4(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g, \
209 * We use the comma operator so that this macro can be used without much
210 * additional code. For example, "return (EINVAL);" becomes
211 * "return (SET_ERROR(EINVAL));". Note that the argument will be evaluated
212 * twice, so it should not have side effects (e.g. something like:
213 * "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice).
215 #define SET_ERROR(err) (ZFS_SET_ERROR(err), err)
218 * Threads. TS_STACK_MIN is dictated by the minimum allowed pthread stack
219 * size. While TS_STACK_MAX is somewhat arbitrary, it was selected to be
220 * large enough for the expected stack depth while small enough to avoid
221 * exhausting address space with high thread counts.
223 #define TS_MAGIC 0x72f158ab4261e538ull
224 #define TS_RUN 0x00000002
225 #define TS_STACK_MIN MAX(PTHREAD_STACK_MIN, 32768)
226 #define TS_STACK_MAX (256 * 1024)
228 /* in libzpool, p0 exists only to have its address taken */
229 typedef struct proc {
230 uintptr_t this_is_never_used_dont_dereference_it;
233 extern struct proc p0;
234 #define curproc (&p0)
236 typedef void (*thread_func_t)(void *);
237 typedef void (*thread_func_arg_t)(void *);
238 typedef pthread_t kt_did_t;
240 #define kpreempt(x) ((void)0)
242 typedef struct kthread {
244 thread_func_t t_func;
249 #define curthread zk_thread_current()
250 #define getcomm() "unknown"
251 #define thread_exit zk_thread_exit
252 #define thread_create(stk, stksize, func, arg, len, pp, state, pri) \
253 zk_thread_create(stk, stksize, (thread_func_t)func, arg, \
254 len, NULL, state, pri, PTHREAD_CREATE_DETACHED)
255 #define thread_join(t) zk_thread_join(t)
256 #define newproc(f, a, cid, pri, ctp, pid) (ENOSYS)
258 extern kthread_t *zk_thread_current(void);
259 extern void zk_thread_exit(void);
260 extern kthread_t *zk_thread_create(caddr_t stk, size_t stksize,
261 thread_func_t func, void *arg, size_t len,
262 proc_t *pp, int state, pri_t pri, int detachstate);
263 extern void zk_thread_join(kt_did_t tid);
265 #define kpreempt_disable() ((void)0)
266 #define kpreempt_enable() ((void)0)
270 #define issig(why) (FALSE)
271 #define ISSIG(thr, why) (FALSE)
276 #define MTX_MAGIC 0x9522f51362a6e326ull
277 #define MTX_INIT ((void *)NULL)
278 #define MTX_DEST ((void *)-1UL)
280 typedef struct kmutex {
283 pthread_mutex_t m_lock;
286 #define MUTEX_DEFAULT 0
287 #define MUTEX_NOLOCKDEP MUTEX_DEFAULT
288 #define MUTEX_HELD(m) ((m)->m_owner == curthread)
289 #define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m))
291 extern void mutex_init(kmutex_t *mp, char *name, int type, void *cookie);
292 extern void mutex_destroy(kmutex_t *mp);
293 extern void mutex_enter(kmutex_t *mp);
294 extern void mutex_exit(kmutex_t *mp);
295 extern int mutex_tryenter(kmutex_t *mp);
296 extern void *mutex_owner(kmutex_t *mp);
297 extern int mutex_held(kmutex_t *mp);
302 #define RW_MAGIC 0x4d31fb123648e78aull
303 #define RW_INIT ((void *)NULL)
304 #define RW_DEST ((void *)-1UL)
306 typedef struct krwlock {
310 pthread_rwlock_t rw_lock;
318 #define RW_DEFAULT RW_READER
319 #define RW_NOLOCKDEP RW_READER
321 #define RW_READ_HELD(x) ((x)->rw_readers > 0)
322 #define RW_WRITE_HELD(x) ((x)->rw_wr_owner == curthread)
323 #define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
326 #define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
329 #define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
331 extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg);
332 extern void rw_destroy(krwlock_t *rwlp);
333 extern void rw_enter(krwlock_t *rwlp, krw_t rw);
334 extern int rw_tryenter(krwlock_t *rwlp, krw_t rw);
335 extern int rw_tryupgrade(krwlock_t *rwlp);
336 extern void rw_exit(krwlock_t *rwlp);
337 #define rw_downgrade(rwlp) do { } while (0)
339 extern uid_t crgetuid(cred_t *cr);
340 extern uid_t crgetruid(cred_t *cr);
341 extern gid_t crgetgid(cred_t *cr);
342 extern int crgetngroups(cred_t *cr);
343 extern gid_t *crgetgroups(cred_t *cr);
346 * Condition variables
348 #define CV_MAGIC 0xd31ea9a83b1b30c4ull
350 typedef struct kcondvar {
356 #define CALLOUT_FLAG_ABSOLUTE 0x2
358 extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg);
359 extern void cv_destroy(kcondvar_t *cv);
360 extern void cv_wait(kcondvar_t *cv, kmutex_t *mp);
361 extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime);
362 extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim,
363 hrtime_t res, int flag);
364 extern void cv_signal(kcondvar_t *cv);
365 extern void cv_broadcast(kcondvar_t *cv);
366 #define cv_timedwait_sig(cv, mp, at) cv_timedwait(cv, mp, at)
367 #define cv_wait_sig(cv, mp) cv_wait(cv, mp)
368 #define cv_wait_io(cv, mp) cv_wait(cv, mp)
369 #define cv_timedwait_sig_hires(cv, mp, t, r, f) \
370 cv_timedwait_hires(cv, mp, t, r, f)
373 * Thread-specific data
375 #define tsd_get(k) pthread_getspecific(k)
376 #define tsd_set(k, v) pthread_setspecific(k, v)
377 #define tsd_create(kp, d) pthread_key_create(kp, d)
378 #define tsd_destroy(kp) /* nothing */
381 * Thread-specific data
383 #define tsd_get(k) pthread_getspecific(k)
384 #define tsd_set(k, v) pthread_setspecific(k, v)
385 #define tsd_create(kp, d) pthread_key_create(kp, d)
386 #define tsd_destroy(kp) /* nothing */
389 * kstat creation, installation and deletion
391 extern kstat_t *kstat_create(const char *, int,
392 const char *, const char *, uchar_t, ulong_t, uchar_t);
393 extern void kstat_install(kstat_t *);
394 extern void kstat_delete(kstat_t *);
395 extern void kstat_waitq_enter(kstat_io_t *);
396 extern void kstat_waitq_exit(kstat_io_t *);
397 extern void kstat_runq_enter(kstat_io_t *);
398 extern void kstat_runq_exit(kstat_io_t *);
399 extern void kstat_waitq_to_runq(kstat_io_t *);
400 extern void kstat_runq_back_to_waitq(kstat_io_t *);
401 extern void kstat_set_raw_ops(kstat_t *ksp,
402 int (*headers)(char *buf, size_t size),
403 int (*data)(char *buf, size_t size, void *data),
404 void *(*addr)(kstat_t *ksp, loff_t index));
409 #define KM_SLEEP UMEM_NOFAIL
410 #define KM_PUSHPAGE KM_SLEEP
411 #define KM_NOSLEEP UMEM_DEFAULT
412 #define KMC_NODEBUG UMC_NODEBUG
415 #define kmem_alloc(_s, _f) umem_alloc(_s, _f)
416 #define kmem_zalloc(_s, _f) umem_zalloc(_s, _f)
417 #define kmem_free(_b, _s) umem_free(_b, _s)
418 #define vmem_alloc(_s, _f) kmem_alloc(_s, _f)
419 #define vmem_zalloc(_s, _f) kmem_zalloc(_s, _f)
420 #define vmem_free(_b, _s) kmem_free(_b, _s)
421 #define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \
422 umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i)
423 #define kmem_cache_destroy(_c) umem_cache_destroy(_c)
424 #define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f)
425 #define kmem_cache_free(_c, _b) umem_cache_free(_c, _b)
426 #define kmem_debugging() 0
427 #define kmem_cache_reap_now(_c) umem_cache_reap_now(_c);
428 #define kmem_cache_set_move(_c, _cb) /* nothing */
429 #define vmem_qcache_reap(_v) /* nothing */
430 #define POINTER_INVALIDATE(_pp) /* nothing */
431 #define POINTER_IS_VALID(_p) 0
433 extern vmem_t *zio_arena;
435 typedef umem_cache_t kmem_cache_t;
437 typedef enum kmem_cbrc {
448 typedef struct taskq taskq_t;
449 typedef uintptr_t taskqid_t;
450 typedef void (task_func_t)(void *);
452 typedef struct taskq_ent {
453 struct taskq_ent *tqent_next;
454 struct taskq_ent *tqent_prev;
455 task_func_t *tqent_func;
457 uintptr_t tqent_flags;
460 #define TQENT_FLAG_PREALLOC 0x1 /* taskq_dispatch_ent used */
462 #define TASKQ_PREPOPULATE 0x0001
463 #define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */
464 #define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */
465 #define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */
466 #define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */
468 #define TQ_SLEEP KM_SLEEP /* Can block for memory */
469 #define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */
470 #define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */
471 #define TQ_FRONT 0x08 /* Queue in front */
473 extern taskq_t *system_taskq;
475 extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t);
476 #define taskq_create_proc(a, b, c, d, e, p, f) \
477 (taskq_create(a, b, c, d, e, f))
478 #define taskq_create_sysdc(a, b, d, e, p, dc, f) \
479 (taskq_create(a, b, maxclsyspri, d, e, f))
480 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
481 extern taskqid_t taskq_dispatch_delay(taskq_t *, task_func_t, void *, uint_t,
483 extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t,
485 extern int taskq_empty_ent(taskq_ent_t *);
486 extern void taskq_init_ent(taskq_ent_t *);
487 extern void taskq_destroy(taskq_t *);
488 extern void taskq_wait(taskq_t *);
489 extern void taskq_wait_id(taskq_t *, taskqid_t);
490 extern void taskq_wait_outstanding(taskq_t *, taskqid_t);
491 extern int taskq_member(taskq_t *, kthread_t *);
492 extern int taskq_cancel_id(taskq_t *, taskqid_t);
493 extern void system_taskq_init(void);
494 extern void system_taskq_fini(void);
496 #define XVA_MAPSIZE 3
497 #define XVA_MAGIC 0x78766174
502 typedef struct vnode {
509 extern char *vn_dumpdir;
510 #define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */
512 typedef struct xoptattr {
513 timestruc_t xoa_createtime; /* Create time of file */
516 uint8_t xoa_readonly;
518 uint8_t xoa_nounlink;
519 uint8_t xoa_immutable;
520 uint8_t xoa_appendonly;
522 uint8_t xoa_settable;
524 uint8_t xoa_av_quarantined;
525 uint8_t xoa_av_modified;
526 uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ];
532 typedef struct vattr {
533 uint_t va_mask; /* bit-mask of attributes */
534 u_offset_t va_size; /* file size in bytes */
538 typedef struct xvattr {
539 vattr_t xva_vattr; /* Embedded vattr structure */
540 uint32_t xva_magic; /* Magic Number */
541 uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */
542 uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */
543 uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */
544 uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */
545 xoptattr_t xva_xoptattrs; /* Optional attributes */
548 typedef struct vsecattr {
549 uint_t vsa_mask; /* See below */
550 int vsa_aclcnt; /* ACL entry count */
551 void *vsa_aclentp; /* pointer to ACL entries */
552 int vsa_dfaclcnt; /* default ACL entry count */
553 void *vsa_dfaclentp; /* pointer to default ACL entries */
554 size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */
557 #define AT_TYPE 0x00001
558 #define AT_MODE 0x00002
559 #define AT_UID 0x00004
560 #define AT_GID 0x00008
561 #define AT_FSID 0x00010
562 #define AT_NODEID 0x00020
563 #define AT_NLINK 0x00040
564 #define AT_SIZE 0x00080
565 #define AT_ATIME 0x00100
566 #define AT_MTIME 0x00200
567 #define AT_CTIME 0x00400
568 #define AT_RDEV 0x00800
569 #define AT_BLKSIZE 0x01000
570 #define AT_NBLOCKS 0x02000
571 #define AT_SEQ 0x08000
572 #define AT_XVATTR 0x10000
576 extern int fop_getattr(vnode_t *vp, vattr_t *vap);
578 #define VOP_CLOSE(vp, f, c, o, cr, ct) vn_close(vp)
579 #define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0
580 #define VOP_GETATTR(vp, vap, fl, cr, ct) fop_getattr((vp), (vap));
582 #define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd)
584 #define VN_RELE(vp) vn_close(vp)
586 extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp,
588 extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp,
589 int x2, int x3, vnode_t *vp, int fd);
590 extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len,
591 offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp);
592 extern void vn_close(vnode_t *vp);
594 #define vn_remove(path, x1, x2) remove(path)
595 #define vn_rename(from, to, seg) rename((from), (to))
596 #define vn_is_readonly(vp) B_FALSE
598 extern vnode_t *rootdir;
600 #include <sys/file.h> /* for FREAD, FWRITE, etc */
605 #define ddi_get_lbolt() (gethrtime() >> 23)
606 #define ddi_get_lbolt64() (gethrtime() >> 23)
607 #define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */
609 #define ddi_time_before(a, b) (a < b)
610 #define ddi_time_after(a, b) ddi_time_before(b, a)
611 #define ddi_time_before_eq(a, b) (!ddi_time_after(a, b))
612 #define ddi_time_after_eq(a, b) ddi_time_before_eq(b, a)
614 #define ddi_time_before64(a, b) (a < b)
615 #define ddi_time_after64(a, b) ddi_time_before64(b, a)
616 #define ddi_time_before_eq64(a, b) (!ddi_time_after64(a, b))
617 #define ddi_time_after_eq64(a, b) ddi_time_before_eq64(b, a)
619 extern void delay(clock_t ticks);
621 #define SEC_TO_TICK(sec) ((sec) * hz)
622 #define MSEC_TO_TICK(msec) ((msec) / (MILLISEC / hz))
623 #define USEC_TO_TICK(usec) ((usec) / (MICROSEC / hz))
624 #define NSEC_TO_TICK(usec) ((usec) / (NANOSEC / hz))
626 #define gethrestime_sec() time(NULL)
627 #define gethrestime(t) \
629 (t)->tv_sec = gethrestime_sec();\
634 #define boot_ncpus (sysconf(_SC_NPROCESSORS_ONLN))
637 * Process priorities as defined by setpriority(2) and getpriority(2).
639 #define minclsyspri 19
640 #define maxclsyspri -20
641 #define defclsyspri 0
643 #define CPU_SEQID ((uintptr_t)pthread_self() & (max_ncpus - 1))
648 #define ptob(x) ((x) * PAGESIZE)
650 extern uint64_t physmem;
652 extern int highbit64(uint64_t i);
653 extern int lowbit64(uint64_t i);
654 extern int random_get_bytes(uint8_t *ptr, size_t len);
655 extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len);
657 extern void kernel_init(int);
658 extern void kernel_fini(void);
659 extern void thread_init(void);
660 extern void thread_fini(void);
663 extern void nicenum(uint64_t num, char *buf);
664 extern void show_pool_stats(struct spa *);
666 typedef struct callb_cpr {
670 #define CALLB_CPR_INIT(cp, lockp, func, name) { \
671 (cp)->cc_lockp = lockp; \
674 #define CALLB_CPR_SAFE_BEGIN(cp) { \
675 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
678 #define CALLB_CPR_SAFE_END(cp, lockp) { \
679 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
682 #define CALLB_CPR_EXIT(cp) { \
683 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
684 mutex_exit((cp)->cc_lockp); \
687 #define zone_dataset_visible(x, y) (1)
688 #define INGLOBALZONE(z) (1)
690 extern char *kmem_vasprintf(const char *fmt, va_list adx);
691 extern char *kmem_asprintf(const char *fmt, ...);
692 #define strfree(str) kmem_free((str), strlen(str) + 1)
695 * Hostname information
697 extern char hw_serial[]; /* for userland-emulated hostid access */
698 extern int ddi_strtoul(const char *str, char **nptr, int base,
699 unsigned long *result);
701 extern int ddi_strtoull(const char *str, char **nptr, int base,
702 u_longlong_t *result);
704 typedef struct utsname utsname_t;
705 extern utsname_t *utsname(void);
707 /* ZFS Boot Related stuff. */
717 typedef struct ace_object {
719 uint32_t a_access_mask;
722 uint8_t a_obj_type[16];
723 uint8_t a_inherit_obj_type[16];
727 #define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05
728 #define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06
729 #define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07
730 #define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08
732 extern struct _buf *kobj_open_file(char *name);
733 extern int kobj_read_file(struct _buf *file, char *buf, unsigned size,
735 extern void kobj_close_file(struct _buf *file);
736 extern int kobj_get_filesize(struct _buf *file, uint64_t *size);
737 extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
738 extern int zfs_secpolicy_rename_perms(const char *from, const char *to,
740 extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
741 extern int secpolicy_zfs(const cred_t *cr);
742 extern zoneid_t getzoneid(void);
745 typedef struct ksiddomain {
751 ksiddomain_t *ksid_lookupdomain(const char *);
752 void ksiddomain_rele(ksiddomain_t *);
754 #define DDI_SLEEP KM_SLEEP
755 #define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) \
756 sysevent_post_event(_c, _d, _b, "libzpool", _e, _f)
758 #define zfs_sleep_until(wakeup) \
760 hrtime_t delta = wakeup - gethrtime(); \
761 struct timespec ts; \
762 ts.tv_sec = delta / NANOSEC; \
763 ts.tv_nsec = delta % NANOSEC; \
764 (void) nanosleep(&ts, NULL); \
767 typedef int fstrans_cookie_t;
769 extern fstrans_cookie_t spl_fstrans_mark(void);
770 extern void spl_fstrans_unmark(fstrans_cookie_t);
771 extern int spl_fstrans_check(void);
774 #endif /* _SYS_ZFS_CONTEXT_H */