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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
32 #include <sys/signal.h>
35 #include <sys/processor.h>
36 #include <sys/zfs_context.h>
37 #include <sys/rrwlock.h>
38 #include <sys/utsname.h>
40 #include <sys/systeminfo.h>
43 * Emulation of kernel services in userland.
48 vnode_t
*rootdir
= (vnode_t
*)0xabcd1234;
49 char hw_serial
[HW_HOSTID_LEN
];
51 struct utsname utsname
= {
52 "userland", "libzpool", "1", "1", "na"
55 /* this only exists to have its address taken */
59 * =========================================================================
61 * =========================================================================
64 pthread_cond_t kthread_cond
= PTHREAD_COND_INITIALIZER
;
65 pthread_mutex_t kthread_lock
= PTHREAD_MUTEX_INITIALIZER
;
66 pthread_key_t kthread_key
;
74 VERIFY3S(pthread_key_create(&kthread_key
, NULL
), ==, 0);
76 /* Create entry for primary kthread */
77 kt
= umem_zalloc(sizeof(kthread_t
), UMEM_NOFAIL
);
78 kt
->t_tid
= pthread_self();
81 VERIFY3S(pthread_setspecific(kthread_key
, kt
), ==, 0);
83 /* Only the main thread should be running at the moment */
84 ASSERT3S(kthread_nr
, ==, 0);
91 kthread_t
*kt
= curthread
;
93 ASSERT(pthread_equal(kt
->t_tid
, pthread_self()));
94 ASSERT3P(kt
->t_func
, ==, NULL
);
96 umem_free(kt
, sizeof(kthread_t
));
98 /* Wait for all threads to exit via thread_exit() */
99 VERIFY3S(pthread_mutex_lock(&kthread_lock
), ==, 0);
101 kthread_nr
--; /* Main thread is exiting */
103 while (kthread_nr
> 0)
104 VERIFY3S(pthread_cond_wait(&kthread_cond
, &kthread_lock
), ==,
107 ASSERT3S(kthread_nr
, ==, 0);
108 VERIFY3S(pthread_mutex_unlock(&kthread_lock
), ==, 0);
110 VERIFY3S(pthread_key_delete(kthread_key
), ==, 0);
114 zk_thread_current(void)
116 kthread_t
*kt
= pthread_getspecific(kthread_key
);
118 ASSERT3P(kt
, !=, NULL
);
124 zk_thread_helper(void *arg
)
126 kthread_t
*kt
= (kthread_t
*) arg
;
128 VERIFY3S(pthread_setspecific(kthread_key
, kt
), ==, 0);
130 VERIFY3S(pthread_mutex_lock(&kthread_lock
), ==, 0);
132 VERIFY3S(pthread_mutex_unlock(&kthread_lock
), ==, 0);
134 kt
->t_tid
= pthread_self();
135 ((thread_func_arg_t
) kt
->t_func
)(kt
->t_arg
);
137 /* Unreachable, thread must exit with thread_exit() */
144 zk_thread_create(caddr_t stk
, size_t stksize
, thread_func_t func
, void *arg
,
145 size_t len
, proc_t
*pp
, int state
, pri_t pri
, int detachstate
)
151 ASSERT3S(state
& ~TS_RUN
, ==, 0);
153 kt
= umem_zalloc(sizeof(kthread_t
), UMEM_NOFAIL
);
158 * The Solaris kernel stack size is 24k for x86/x86_64.
159 * The Linux kernel stack size is 8k for x86/x86_64.
161 * We reduce the default stack size in userspace, to ensure
162 * we observe stack overruns in user space as well as in
163 * kernel space. In practice we can't set the userspace stack
164 * size to 8k because differences in stack usage between kernel
165 * space and userspace could lead to spurious stack overflows
166 * (especially when debugging is enabled). Nevertheless, we try
167 * to set it to the lowest value that works (currently 8k*4).
168 * PTHREAD_STACK_MIN is the minimum stack required for a NULL
169 * procedure in user space and is added in to the stack
172 * Some buggy NPTL threading implementations include the
173 * guard area within the stack size allocations. In
174 * this case we allocate an extra page to account for the
175 * guard area since we only have two pages of usable stack
179 stack
= PTHREAD_STACK_MIN
+ MAX(stksize
, STACK_SIZE
) * 4;
181 VERIFY3S(pthread_attr_init(&attr
), ==, 0);
182 VERIFY3S(pthread_attr_setstacksize(&attr
, stack
), ==, 0);
183 VERIFY3S(pthread_attr_setguardsize(&attr
, PAGESIZE
), ==, 0);
184 VERIFY3S(pthread_attr_setdetachstate(&attr
, detachstate
), ==, 0);
186 VERIFY3S(pthread_create(&kt
->t_tid
, &attr
, &zk_thread_helper
, kt
),
189 VERIFY3S(pthread_attr_destroy(&attr
), ==, 0);
197 kthread_t
*kt
= curthread
;
199 ASSERT(pthread_equal(kt
->t_tid
, pthread_self()));
201 umem_free(kt
, sizeof(kthread_t
));
203 pthread_mutex_lock(&kthread_lock
);
205 pthread_mutex_unlock(&kthread_lock
);
207 pthread_cond_broadcast(&kthread_cond
);
208 pthread_exit((void *)TS_MAGIC
);
212 zk_thread_join(kt_did_t tid
)
216 pthread_join((pthread_t
)tid
, &ret
);
217 VERIFY3P(ret
, ==, (void *)TS_MAGIC
);
221 * =========================================================================
223 * =========================================================================
227 kstat_create(char *module
, int instance
, char *name
, char *class,
228 uchar_t type
, ulong_t ndata
, uchar_t ks_flag
)
235 kstat_install(kstat_t
*ksp
)
240 kstat_delete(kstat_t
*ksp
)
244 * =========================================================================
246 * =========================================================================
250 mutex_init(kmutex_t
*mp
, char *name
, int type
, void *cookie
)
252 ASSERT3S(type
, ==, MUTEX_DEFAULT
);
253 ASSERT3P(cookie
, ==, NULL
);
254 mp
->m_owner
= MTX_INIT
;
255 mp
->m_magic
= MTX_MAGIC
;
256 VERIFY3S(pthread_mutex_init(&mp
->m_lock
, NULL
), ==, 0);
260 mutex_destroy(kmutex_t
*mp
)
262 ASSERT3U(mp
->m_magic
, ==, MTX_MAGIC
);
263 ASSERT3P(mp
->m_owner
, ==, MTX_INIT
);
264 VERIFY3S(pthread_mutex_destroy(&(mp
)->m_lock
), ==, 0);
265 mp
->m_owner
= MTX_DEST
;
270 mutex_enter(kmutex_t
*mp
)
272 ASSERT3U(mp
->m_magic
, ==, MTX_MAGIC
);
273 ASSERT3P(mp
->m_owner
, !=, MTX_DEST
);
274 ASSERT3P(mp
->m_owner
, !=, curthread
);
275 VERIFY3S(pthread_mutex_lock(&mp
->m_lock
), ==, 0);
276 ASSERT3P(mp
->m_owner
, ==, MTX_INIT
);
277 mp
->m_owner
= curthread
;
281 mutex_tryenter(kmutex_t
*mp
)
283 ASSERT3U(mp
->m_magic
, ==, MTX_MAGIC
);
284 ASSERT3P(mp
->m_owner
, !=, MTX_DEST
);
285 if (0 == pthread_mutex_trylock(&mp
->m_lock
)) {
286 ASSERT3P(mp
->m_owner
, ==, MTX_INIT
);
287 mp
->m_owner
= curthread
;
295 mutex_exit(kmutex_t
*mp
)
297 ASSERT3U(mp
->m_magic
, ==, MTX_MAGIC
);
298 ASSERT3P(mutex_owner(mp
), ==, curthread
);
299 mp
->m_owner
= MTX_INIT
;
300 VERIFY3S(pthread_mutex_unlock(&mp
->m_lock
), ==, 0);
304 mutex_owner(kmutex_t
*mp
)
306 ASSERT3U(mp
->m_magic
, ==, MTX_MAGIC
);
307 return (mp
->m_owner
);
311 mutex_held(kmutex_t
*mp
)
313 return (mp
->m_owner
== curthread
);
317 * =========================================================================
319 * =========================================================================
323 rw_init(krwlock_t
*rwlp
, char *name
, int type
, void *arg
)
325 ASSERT3S(type
, ==, RW_DEFAULT
);
326 ASSERT3P(arg
, ==, NULL
);
327 VERIFY3S(pthread_rwlock_init(&rwlp
->rw_lock
, NULL
), ==, 0);
328 rwlp
->rw_owner
= RW_INIT
;
329 rwlp
->rw_wr_owner
= RW_INIT
;
330 rwlp
->rw_readers
= 0;
331 rwlp
->rw_magic
= RW_MAGIC
;
335 rw_destroy(krwlock_t
*rwlp
)
337 ASSERT3U(rwlp
->rw_magic
, ==, RW_MAGIC
);
339 VERIFY3S(pthread_rwlock_destroy(&rwlp
->rw_lock
), ==, 0);
344 rw_enter(krwlock_t
*rwlp
, krw_t rw
)
346 ASSERT3U(rwlp
->rw_magic
, ==, RW_MAGIC
);
347 ASSERT3P(rwlp
->rw_owner
, !=, curthread
);
348 ASSERT3P(rwlp
->rw_wr_owner
, !=, curthread
);
350 if (rw
== RW_READER
) {
351 VERIFY3S(pthread_rwlock_rdlock(&rwlp
->rw_lock
), ==, 0);
352 ASSERT3P(rwlp
->rw_wr_owner
, ==, RW_INIT
);
354 atomic_inc_uint(&rwlp
->rw_readers
);
356 VERIFY3S(pthread_rwlock_wrlock(&rwlp
->rw_lock
), ==, 0);
357 ASSERT3P(rwlp
->rw_wr_owner
, ==, RW_INIT
);
358 ASSERT3U(rwlp
->rw_readers
, ==, 0);
360 rwlp
->rw_wr_owner
= curthread
;
363 rwlp
->rw_owner
= curthread
;
367 rw_exit(krwlock_t
*rwlp
)
369 ASSERT3U(rwlp
->rw_magic
, ==, RW_MAGIC
);
370 ASSERT(RW_LOCK_HELD(rwlp
));
372 if (RW_READ_HELD(rwlp
))
373 atomic_dec_uint(&rwlp
->rw_readers
);
375 rwlp
->rw_wr_owner
= RW_INIT
;
377 rwlp
->rw_owner
= RW_INIT
;
378 VERIFY3S(pthread_rwlock_unlock(&rwlp
->rw_lock
), ==, 0);
382 rw_tryenter(krwlock_t
*rwlp
, krw_t rw
)
386 ASSERT3U(rwlp
->rw_magic
, ==, RW_MAGIC
);
389 rv
= pthread_rwlock_tryrdlock(&rwlp
->rw_lock
);
391 rv
= pthread_rwlock_trywrlock(&rwlp
->rw_lock
);
394 ASSERT3P(rwlp
->rw_wr_owner
, ==, RW_INIT
);
397 atomic_inc_uint(&rwlp
->rw_readers
);
399 ASSERT3U(rwlp
->rw_readers
, ==, 0);
400 rwlp
->rw_wr_owner
= curthread
;
403 rwlp
->rw_owner
= curthread
;
407 VERIFY3S(rv
, ==, EBUSY
);
413 rw_tryupgrade(krwlock_t
*rwlp
)
415 ASSERT3U(rwlp
->rw_magic
, ==, RW_MAGIC
);
421 * =========================================================================
422 * condition variables
423 * =========================================================================
427 cv_init(kcondvar_t
*cv
, char *name
, int type
, void *arg
)
429 ASSERT3S(type
, ==, CV_DEFAULT
);
430 cv
->cv_magic
= CV_MAGIC
;
431 VERIFY3S(pthread_cond_init(&cv
->cv
, NULL
), ==, 0);
435 cv_destroy(kcondvar_t
*cv
)
437 ASSERT3U(cv
->cv_magic
, ==, CV_MAGIC
);
438 VERIFY3S(pthread_cond_destroy(&cv
->cv
), ==, 0);
443 cv_wait(kcondvar_t
*cv
, kmutex_t
*mp
)
445 ASSERT3U(cv
->cv_magic
, ==, CV_MAGIC
);
446 ASSERT3P(mutex_owner(mp
), ==, curthread
);
447 mp
->m_owner
= MTX_INIT
;
448 int ret
= pthread_cond_wait(&cv
->cv
, &mp
->m_lock
);
450 VERIFY3S(ret
, ==, EINTR
);
451 mp
->m_owner
= curthread
;
455 cv_timedwait(kcondvar_t
*cv
, kmutex_t
*mp
, clock_t abstime
)
462 ASSERT3U(cv
->cv_magic
, ==, CV_MAGIC
);
465 delta
= abstime
- ddi_get_lbolt();
469 VERIFY(gettimeofday(&tv
, NULL
) == 0);
471 ts
.tv_sec
= tv
.tv_sec
+ delta
/ hz
;
472 ts
.tv_nsec
= tv
.tv_usec
* 1000 + (delta
% hz
) * (NANOSEC
/ hz
);
473 if (ts
.tv_nsec
>= NANOSEC
) {
475 ts
.tv_nsec
-= NANOSEC
;
478 ASSERT3P(mutex_owner(mp
), ==, curthread
);
479 mp
->m_owner
= MTX_INIT
;
480 error
= pthread_cond_timedwait(&cv
->cv
, &mp
->m_lock
, &ts
);
481 mp
->m_owner
= curthread
;
483 if (error
== ETIMEDOUT
)
489 VERIFY3S(error
, ==, 0);
495 cv_signal(kcondvar_t
*cv
)
497 ASSERT3U(cv
->cv_magic
, ==, CV_MAGIC
);
498 VERIFY3S(pthread_cond_signal(&cv
->cv
), ==, 0);
502 cv_broadcast(kcondvar_t
*cv
)
504 ASSERT3U(cv
->cv_magic
, ==, CV_MAGIC
);
505 VERIFY3S(pthread_cond_broadcast(&cv
->cv
), ==, 0);
509 * =========================================================================
511 * =========================================================================
514 * Note: for the xxxat() versions of these functions, we assume that the
515 * starting vp is always rootdir (which is true for spa_directory.c, the only
516 * ZFS consumer of these interfaces). We assert this is true, and then emulate
517 * them by adding '/' in front of the path.
522 vn_open(char *path
, int x1
, int flags
, int mode
, vnode_t
**vpp
, int x2
, int x3
)
531 realpath
= umem_alloc(MAXPATHLEN
, UMEM_NOFAIL
);
534 * If we're accessing a real disk from userland, we need to use
535 * the character interface to avoid caching. This is particularly
536 * important if we're trying to look at a real in-kernel storage
537 * pool from userland, e.g. via zdb, because otherwise we won't
538 * see the changes occurring under the segmap cache.
539 * On the other hand, the stupid character device returns zero
540 * for its size. So -- gag -- we open the block device to get
541 * its size, and remember it for subsequent VOP_GETATTR().
543 #if defined(__sun__) || defined(__sun)
544 if (strncmp(path
, "/dev/", 5) == 0) {
549 fd
= open64(path
, O_RDONLY
);
555 if (fstat64(fd
, &st
) == -1) {
562 (void) sprintf(realpath
, "%s", path
);
563 dsk
= strstr(path
, "/dsk/");
565 (void) sprintf(realpath
+ (dsk
- path
) + 1, "r%s",
568 (void) sprintf(realpath
, "%s", path
);
569 if (!(flags
& FCREAT
) && stat64(realpath
, &st
) == -1) {
576 if (!(flags
& FCREAT
) && S_ISBLK(st
.st_mode
)) {
580 /* We shouldn't be writing to block devices in userspace */
581 VERIFY(!(flags
& FWRITE
));
585 old_umask
= umask(0);
588 * The construct 'flags - FREAD' conveniently maps combinations of
589 * FREAD and FWRITE to the corresponding O_RDONLY, O_WRONLY, and O_RDWR.
591 fd
= open64(realpath
, flags
- FREAD
, mode
);
595 (void) umask(old_umask
);
600 if (fstat64_blk(fd
, &st
) == -1) {
606 (void) fcntl(fd
, F_SETFD
, FD_CLOEXEC
);
608 *vpp
= vp
= umem_zalloc(sizeof (vnode_t
), UMEM_NOFAIL
);
611 vp
->v_size
= st
.st_size
;
612 vp
->v_path
= spa_strdup(path
);
619 vn_openat(char *path
, int x1
, int flags
, int mode
, vnode_t
**vpp
, int x2
,
620 int x3
, vnode_t
*startvp
, int fd
)
622 char *realpath
= umem_alloc(strlen(path
) + 2, UMEM_NOFAIL
);
625 ASSERT(startvp
== rootdir
);
626 (void) sprintf(realpath
, "/%s", path
);
628 /* fd ignored for now, need if want to simulate nbmand support */
629 ret
= vn_open(realpath
, x1
, flags
, mode
, vpp
, x2
, x3
);
631 umem_free(realpath
, strlen(path
) + 2);
638 vn_rdwr(int uio
, vnode_t
*vp
, void *addr
, ssize_t len
, offset_t offset
,
639 int x1
, int x2
, rlim64_t x3
, void *x4
, ssize_t
*residp
)
641 ssize_t rc
, done
= 0, split
;
643 if (uio
== UIO_READ
) {
644 rc
= pread64(vp
->v_fd
, addr
, len
, offset
);
647 * To simulate partial disk writes, we split writes into two
648 * system calls so that the process can be killed in between.
650 int sectors
= len
>> SPA_MINBLOCKSHIFT
;
651 split
= (sectors
> 0 ? rand() % sectors
: 0) <<
653 rc
= pwrite64(vp
->v_fd
, addr
, split
, offset
);
656 rc
= pwrite64(vp
->v_fd
, (char *)addr
+ split
,
657 len
- split
, offset
+ split
);
662 if (rc
== -1 && errno
== EINVAL
) {
664 * Under Linux, this most likely means an alignment issue
665 * (memory or disk) due to O_DIRECT, so we abort() in order to
666 * catch the offender.
677 *residp
= len
- done
;
678 else if (done
!= len
)
684 vn_close(vnode_t
*vp
)
687 spa_strfree(vp
->v_path
);
688 umem_free(vp
, sizeof (vnode_t
));
692 * At a minimum we need to update the size since vdev_reopen()
693 * will no longer call vn_openat().
696 fop_getattr(vnode_t
*vp
, vattr_t
*vap
)
701 if (fstat64_blk(vp
->v_fd
, &st
) == -1) {
707 vap
->va_size
= st
.st_size
;
712 * =========================================================================
713 * Figure out which debugging statements to print
714 * =========================================================================
717 static char *dprintf_string
;
718 static int dprintf_print_all
;
721 dprintf_find_string(const char *string
)
723 char *tmp_str
= dprintf_string
;
724 int len
= strlen(string
);
727 * Find out if this is a string we want to print.
728 * String format: file1.c,function_name1,file2.c,file3.c
731 while (tmp_str
!= NULL
) {
732 if (strncmp(tmp_str
, string
, len
) == 0 &&
733 (tmp_str
[len
] == ',' || tmp_str
[len
] == '\0'))
735 tmp_str
= strchr(tmp_str
, ',');
737 tmp_str
++; /* Get rid of , */
743 dprintf_setup(int *argc
, char **argv
)
748 * Debugging can be specified two ways: by setting the
749 * environment variable ZFS_DEBUG, or by including a
750 * "debug=..." argument on the command line. The command
751 * line setting overrides the environment variable.
754 for (i
= 1; i
< *argc
; i
++) {
755 int len
= strlen("debug=");
756 /* First look for a command line argument */
757 if (strncmp("debug=", argv
[i
], len
) == 0) {
758 dprintf_string
= argv
[i
] + len
;
759 /* Remove from args */
760 for (j
= i
; j
< *argc
; j
++)
767 if (dprintf_string
== NULL
) {
768 /* Look for ZFS_DEBUG environment variable */
769 dprintf_string
= getenv("ZFS_DEBUG");
773 * Are we just turning on all debugging?
775 if (dprintf_find_string("on"))
776 dprintf_print_all
= 1;
780 * =========================================================================
782 * =========================================================================
785 __dprintf(const char *file
, const char *func
, int line
, const char *fmt
, ...)
791 * Get rid of annoying "../common/" prefix to filename.
793 newfile
= strrchr(file
, '/');
794 if (newfile
!= NULL
) {
795 newfile
= newfile
+ 1; /* Get rid of leading / */
800 if (dprintf_print_all
||
801 dprintf_find_string(newfile
) ||
802 dprintf_find_string(func
)) {
803 /* Print out just the function name if requested */
805 if (dprintf_find_string("pid"))
806 (void) printf("%d ", getpid());
807 if (dprintf_find_string("tid"))
808 (void) printf("%u ", (uint_t
) pthread_self());
809 if (dprintf_find_string("cpu"))
810 (void) printf("%u ", getcpuid());
811 if (dprintf_find_string("time"))
812 (void) printf("%llu ", gethrtime());
813 if (dprintf_find_string("long"))
814 (void) printf("%s, line %d: ", newfile
, line
);
815 (void) printf("%s: ", func
);
817 (void) vprintf(fmt
, adx
);
824 * =========================================================================
825 * cmn_err() and panic()
826 * =========================================================================
828 static char ce_prefix
[CE_IGNORE
][10] = { "", "NOTICE: ", "WARNING: ", "" };
829 static char ce_suffix
[CE_IGNORE
][2] = { "", "\n", "\n", "" };
832 vpanic(const char *fmt
, va_list adx
)
834 (void) fprintf(stderr
, "error: ");
835 (void) vfprintf(stderr
, fmt
, adx
);
836 (void) fprintf(stderr
, "\n");
838 abort(); /* think of it as a "user-level crash dump" */
842 panic(const char *fmt
, ...)
852 vcmn_err(int ce
, const char *fmt
, va_list adx
)
856 if (ce
!= CE_NOTE
) { /* suppress noise in userland stress testing */
857 (void) fprintf(stderr
, "%s", ce_prefix
[ce
]);
858 (void) vfprintf(stderr
, fmt
, adx
);
859 (void) fprintf(stderr
, "%s", ce_suffix
[ce
]);
865 cmn_err(int ce
, const char *fmt
, ...)
870 vcmn_err(ce
, fmt
, adx
);
875 * =========================================================================
877 * =========================================================================
880 kobj_open_file(char *name
)
885 /* set vp as the _fd field of the file */
886 if (vn_openat(name
, UIO_SYSSPACE
, FREAD
, 0, &vp
, 0, 0, rootdir
,
888 return ((void *)-1UL);
890 file
= umem_zalloc(sizeof (struct _buf
), UMEM_NOFAIL
);
891 file
->_fd
= (intptr_t)vp
;
896 kobj_read_file(struct _buf
*file
, char *buf
, unsigned size
, unsigned off
)
900 vn_rdwr(UIO_READ
, (vnode_t
*)file
->_fd
, buf
, size
, (offset_t
)off
,
901 UIO_SYSSPACE
, 0, 0, 0, &resid
);
903 return (size
- resid
);
907 kobj_close_file(struct _buf
*file
)
909 vn_close((vnode_t
*)file
->_fd
);
910 umem_free(file
, sizeof (struct _buf
));
914 kobj_get_filesize(struct _buf
*file
, uint64_t *size
)
917 vnode_t
*vp
= (vnode_t
*)file
->_fd
;
919 if (fstat64(vp
->v_fd
, &st
) == -1) {
928 * =========================================================================
930 * =========================================================================
936 poll(0, 0, ticks
* (1000 / hz
));
940 * Find highest one bit set.
941 * Returns bit number + 1 of highest bit that is set, otherwise returns 0.
942 * High order bit is 31 (or 63 in _LP64 kernel).
952 if (i
& 0xffffffff00000000ul
) {
956 if (i
& 0xffff0000) {
974 static int random_fd
= -1, urandom_fd
= -1;
977 random_get_bytes_common(uint8_t *ptr
, size_t len
, int fd
)
985 bytes
= read(fd
, ptr
, resid
);
986 ASSERT3S(bytes
, >=, 0);
995 random_get_bytes(uint8_t *ptr
, size_t len
)
997 return (random_get_bytes_common(ptr
, len
, random_fd
));
1001 random_get_pseudo_bytes(uint8_t *ptr
, size_t len
)
1003 return (random_get_bytes_common(ptr
, len
, urandom_fd
));
1007 ddi_strtoul(const char *hw_serial
, char **nptr
, int base
, unsigned long *result
)
1011 *result
= strtoul(hw_serial
, &end
, base
);
1018 ddi_strtoull(const char *str
, char **nptr
, int base
, u_longlong_t
*result
)
1022 *result
= strtoull(str
, &end
, base
);
1029 * =========================================================================
1030 * kernel emulation setup & teardown
1031 * =========================================================================
1034 umem_out_of_memory(void)
1036 char errmsg
[] = "out of memory -- generating core dump\n";
1038 (void) fprintf(stderr
, "%s", errmsg
);
1044 kernel_init(int mode
)
1046 extern uint_t rrw_tsd_key
;
1048 umem_nofail_callback(umem_out_of_memory
);
1050 physmem
= sysconf(_SC_PHYS_PAGES
);
1052 dprintf("physmem = %llu pages (%.2f GB)\n", physmem
,
1053 (double)physmem
* sysconf(_SC_PAGE_SIZE
) / (1ULL << 30));
1055 (void) snprintf(hw_serial
, sizeof (hw_serial
), "%ld",
1056 (mode
& FWRITE
) ? gethostid() : 0);
1058 VERIFY((random_fd
= open("/dev/random", O_RDONLY
)) != -1);
1059 VERIFY((urandom_fd
= open("/dev/urandom", O_RDONLY
)) != -1);
1062 system_taskq_init();
1066 tsd_create(&rrw_tsd_key
, rrw_tsd_destroy
);
1074 system_taskq_fini();
1085 crgetuid(cred_t
*cr
)
1091 crgetruid(cred_t
*cr
)
1097 crgetgid(cred_t
*cr
)
1103 crgetngroups(cred_t
*cr
)
1109 crgetgroups(cred_t
*cr
)
1115 zfs_secpolicy_snapshot_perms(const char *name
, cred_t
*cr
)
1121 zfs_secpolicy_rename_perms(const char *from
, const char *to
, cred_t
*cr
)
1127 zfs_secpolicy_destroy_perms(const char *name
, cred_t
*cr
)
1133 ksid_lookupdomain(const char *dom
)
1137 kd
= umem_zalloc(sizeof (ksiddomain_t
), UMEM_NOFAIL
);
1138 kd
->kd_name
= spa_strdup(dom
);
1143 ksiddomain_rele(ksiddomain_t
*ksid
)
1145 spa_strfree(ksid
->kd_name
);
1146 umem_free(ksid
, sizeof (ksiddomain_t
));
1150 kmem_vasprintf(const char *fmt
, va_list adx
)
1155 va_copy(adx_copy
, adx
);
1156 VERIFY(vasprintf(&buf
, fmt
, adx_copy
) != -1);
1163 kmem_asprintf(const char *fmt
, ...)
1169 VERIFY(vasprintf(&buf
, fmt
, adx
) != -1);
1177 zfs_onexit_fd_hold(int fd
, minor_t
*minorp
)
1185 zfs_onexit_fd_rele(int fd
)
1191 zfs_onexit_add_cb(minor_t minor
, void (*func
)(void *), void *data
,
1192 uint64_t *action_handle
)
1199 zfs_onexit_del_cb(minor_t minor
, uint64_t action_handle
, boolean_t fire
)
1206 zfs_onexit_cb_data(minor_t minor
, uint64_t action_handle
, void **data
)