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/utsname.h>
39 #include <sys/mount.h> /* for BLKGETSIZE64 */
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
)
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. PTHREAD_STACK_MIN is the minimum stack
164 * required for a NULL procedure in user space and is added
165 * in to the stack requirements.
167 * Some buggy NPTL threading implementations include the
168 * guard area within the stack size allocations. In
169 * this case we allocate an extra page to account for the
170 * guard area since we only have two pages of usable stack
174 stack
= PTHREAD_STACK_MIN
+ MAX(stksize
, STACK_SIZE
) +
177 VERIFY3S(pthread_attr_init(&attr
), ==, 0);
178 VERIFY3S(pthread_attr_setstacksize(&attr
, stack
), ==, 0);
179 VERIFY3S(pthread_attr_setguardsize(&attr
, PAGESIZE
), ==, 0);
181 VERIFY3S(pthread_create(&kt
->t_tid
, &attr
, &zk_thread_helper
, kt
),
184 VERIFY3S(pthread_attr_destroy(&attr
), ==, 0);
192 kthread_t
*kt
= curthread
;
194 ASSERT(pthread_equal(kt
->t_tid
, pthread_self()));
196 umem_free(kt
, sizeof(kthread_t
));
198 pthread_mutex_lock(&kthread_lock
);
200 pthread_mutex_unlock(&kthread_lock
);
202 pthread_cond_broadcast(&kthread_cond
);
203 pthread_exit((void *)TS_MAGIC
);
207 zk_thread_join(kt_did_t tid
)
211 pthread_join((pthread_t
)tid
, &ret
);
212 VERIFY3P(ret
, ==, (void *)TS_MAGIC
);
216 * =========================================================================
218 * =========================================================================
222 kstat_create(char *module
, int instance
, char *name
, char *class,
223 uchar_t type
, ulong_t ndata
, uchar_t ks_flag
)
230 kstat_install(kstat_t
*ksp
)
235 kstat_delete(kstat_t
*ksp
)
239 * =========================================================================
241 * =========================================================================
245 mutex_init(kmutex_t
*mp
, char *name
, int type
, void *cookie
)
247 ASSERT3S(type
, ==, MUTEX_DEFAULT
);
248 ASSERT3P(cookie
, ==, NULL
);
249 mp
->m_owner
= MTX_INIT
;
250 mp
->m_magic
= MTX_MAGIC
;
251 VERIFY3S(pthread_mutex_init(&mp
->m_lock
, NULL
), ==, 0);
255 mutex_destroy(kmutex_t
*mp
)
257 ASSERT3U(mp
->m_magic
, ==, MTX_MAGIC
);
258 ASSERT3P(mp
->m_owner
, ==, MTX_INIT
);
259 VERIFY3S(pthread_mutex_destroy(&(mp
)->m_lock
), ==, 0);
260 mp
->m_owner
= MTX_DEST
;
265 mutex_enter(kmutex_t
*mp
)
267 ASSERT3U(mp
->m_magic
, ==, MTX_MAGIC
);
268 ASSERT3P(mp
->m_owner
, !=, MTX_DEST
);
269 ASSERT3P(mp
->m_owner
, !=, curthread
);
270 VERIFY3S(pthread_mutex_lock(&mp
->m_lock
), ==, 0);
271 ASSERT3P(mp
->m_owner
, ==, MTX_INIT
);
272 mp
->m_owner
= curthread
;
276 mutex_tryenter(kmutex_t
*mp
)
278 ASSERT3U(mp
->m_magic
, ==, MTX_MAGIC
);
279 ASSERT3P(mp
->m_owner
, !=, MTX_DEST
);
280 if (0 == pthread_mutex_trylock(&mp
->m_lock
)) {
281 ASSERT3P(mp
->m_owner
, ==, MTX_INIT
);
282 mp
->m_owner
= curthread
;
290 mutex_exit(kmutex_t
*mp
)
292 ASSERT3U(mp
->m_magic
, ==, MTX_MAGIC
);
293 ASSERT3P(mutex_owner(mp
), ==, curthread
);
294 mp
->m_owner
= MTX_INIT
;
295 VERIFY3S(pthread_mutex_unlock(&mp
->m_lock
), ==, 0);
299 mutex_owner(kmutex_t
*mp
)
301 ASSERT3U(mp
->m_magic
, ==, MTX_MAGIC
);
302 return (mp
->m_owner
);
306 mutex_held(kmutex_t
*mp
)
308 return (mp
->m_owner
== curthread
);
312 * =========================================================================
314 * =========================================================================
318 rw_init(krwlock_t
*rwlp
, char *name
, int type
, void *arg
)
320 ASSERT3S(type
, ==, RW_DEFAULT
);
321 ASSERT3P(arg
, ==, NULL
);
322 VERIFY3S(pthread_rwlock_init(&rwlp
->rw_lock
, NULL
), ==, 0);
323 rwlp
->rw_owner
= RW_INIT
;
324 rwlp
->rw_wr_owner
= RW_INIT
;
325 rwlp
->rw_readers
= 0;
326 rwlp
->rw_magic
= RW_MAGIC
;
330 rw_destroy(krwlock_t
*rwlp
)
332 ASSERT3U(rwlp
->rw_magic
, ==, RW_MAGIC
);
334 VERIFY3S(pthread_rwlock_destroy(&rwlp
->rw_lock
), ==, 0);
339 rw_enter(krwlock_t
*rwlp
, krw_t rw
)
341 ASSERT3U(rwlp
->rw_magic
, ==, RW_MAGIC
);
342 ASSERT3P(rwlp
->rw_owner
, !=, curthread
);
343 ASSERT3P(rwlp
->rw_wr_owner
, !=, curthread
);
345 if (rw
== RW_READER
) {
346 VERIFY3S(pthread_rwlock_rdlock(&rwlp
->rw_lock
), ==, 0);
347 ASSERT3P(rwlp
->rw_wr_owner
, ==, RW_INIT
);
349 atomic_inc_uint(&rwlp
->rw_readers
);
351 VERIFY3S(pthread_rwlock_wrlock(&rwlp
->rw_lock
), ==, 0);
352 ASSERT3P(rwlp
->rw_wr_owner
, ==, RW_INIT
);
353 ASSERT3U(rwlp
->rw_readers
, ==, 0);
355 rwlp
->rw_wr_owner
= curthread
;
358 rwlp
->rw_owner
= curthread
;
362 rw_exit(krwlock_t
*rwlp
)
364 ASSERT3U(rwlp
->rw_magic
, ==, RW_MAGIC
);
365 ASSERT(RW_LOCK_HELD(rwlp
));
367 if (RW_READ_HELD(rwlp
))
368 atomic_dec_uint(&rwlp
->rw_readers
);
370 rwlp
->rw_wr_owner
= RW_INIT
;
372 rwlp
->rw_owner
= RW_INIT
;
373 VERIFY3S(pthread_rwlock_unlock(&rwlp
->rw_lock
), ==, 0);
377 rw_tryenter(krwlock_t
*rwlp
, krw_t rw
)
381 ASSERT3U(rwlp
->rw_magic
, ==, RW_MAGIC
);
384 rv
= pthread_rwlock_tryrdlock(&rwlp
->rw_lock
);
386 rv
= pthread_rwlock_trywrlock(&rwlp
->rw_lock
);
389 ASSERT3P(rwlp
->rw_wr_owner
, ==, RW_INIT
);
392 atomic_inc_uint(&rwlp
->rw_readers
);
394 ASSERT3U(rwlp
->rw_readers
, ==, 0);
395 rwlp
->rw_wr_owner
= curthread
;
398 rwlp
->rw_owner
= curthread
;
402 VERIFY3S(rv
, ==, EBUSY
);
408 rw_tryupgrade(krwlock_t
*rwlp
)
410 ASSERT3U(rwlp
->rw_magic
, ==, RW_MAGIC
);
416 * =========================================================================
417 * condition variables
418 * =========================================================================
422 cv_init(kcondvar_t
*cv
, char *name
, int type
, void *arg
)
424 ASSERT3S(type
, ==, CV_DEFAULT
);
425 cv
->cv_magic
= CV_MAGIC
;
426 VERIFY3S(pthread_cond_init(&cv
->cv
, NULL
), ==, 0);
430 cv_destroy(kcondvar_t
*cv
)
432 ASSERT3U(cv
->cv_magic
, ==, CV_MAGIC
);
433 VERIFY3S(pthread_cond_destroy(&cv
->cv
), ==, 0);
438 cv_wait(kcondvar_t
*cv
, kmutex_t
*mp
)
440 ASSERT3U(cv
->cv_magic
, ==, CV_MAGIC
);
441 ASSERT3P(mutex_owner(mp
), ==, curthread
);
442 mp
->m_owner
= MTX_INIT
;
443 int ret
= pthread_cond_wait(&cv
->cv
, &mp
->m_lock
);
445 VERIFY3S(ret
, ==, EINTR
);
446 mp
->m_owner
= curthread
;
450 cv_timedwait(kcondvar_t
*cv
, kmutex_t
*mp
, clock_t abstime
)
457 ASSERT3U(cv
->cv_magic
, ==, CV_MAGIC
);
460 delta
= abstime
- ddi_get_lbolt();
464 VERIFY(gettimeofday(&tv
, NULL
) == 0);
466 ts
.tv_sec
= tv
.tv_sec
+ delta
/ hz
;
467 ts
.tv_nsec
= tv
.tv_usec
* 1000 + (delta
% hz
) * (NANOSEC
/ hz
);
468 if (ts
.tv_nsec
>= NANOSEC
) {
470 ts
.tv_nsec
-= NANOSEC
;
473 ASSERT3P(mutex_owner(mp
), ==, curthread
);
474 mp
->m_owner
= MTX_INIT
;
475 error
= pthread_cond_timedwait(&cv
->cv
, &mp
->m_lock
, &ts
);
476 mp
->m_owner
= curthread
;
478 if (error
== ETIMEDOUT
)
484 VERIFY3S(error
, ==, 0);
490 cv_signal(kcondvar_t
*cv
)
492 ASSERT3U(cv
->cv_magic
, ==, CV_MAGIC
);
493 VERIFY3S(pthread_cond_signal(&cv
->cv
), ==, 0);
497 cv_broadcast(kcondvar_t
*cv
)
499 ASSERT3U(cv
->cv_magic
, ==, CV_MAGIC
);
500 VERIFY3S(pthread_cond_broadcast(&cv
->cv
), ==, 0);
504 * =========================================================================
506 * =========================================================================
509 * Note: for the xxxat() versions of these functions, we assume that the
510 * starting vp is always rootdir (which is true for spa_directory.c, the only
511 * ZFS consumer of these interfaces). We assert this is true, and then emulate
512 * them by adding '/' in front of the path.
517 vn_open(char *path
, int x1
, int flags
, int mode
, vnode_t
**vpp
, int x2
, int x3
)
526 realpath
= umem_alloc(MAXPATHLEN
, UMEM_NOFAIL
);
529 * If we're accessing a real disk from userland, we need to use
530 * the character interface to avoid caching. This is particularly
531 * important if we're trying to look at a real in-kernel storage
532 * pool from userland, e.g. via zdb, because otherwise we won't
533 * see the changes occurring under the segmap cache.
534 * On the other hand, the stupid character device returns zero
535 * for its size. So -- gag -- we open the block device to get
536 * its size, and remember it for subsequent VOP_GETATTR().
538 #if defined(__sun__) || defined(__sun)
539 if (strncmp(path
, "/dev/", 5) == 0) {
544 fd
= open64(path
, O_RDONLY
);
550 if (fstat64(fd
, &st
) == -1) {
557 (void) sprintf(realpath
, "%s", path
);
558 dsk
= strstr(path
, "/dsk/");
560 (void) sprintf(realpath
+ (dsk
- path
) + 1, "r%s",
563 (void) sprintf(realpath
, "%s", path
);
564 if (!(flags
& FCREAT
) && stat64(realpath
, &st
) == -1) {
571 if (!(flags
& FCREAT
) && S_ISBLK(st
.st_mode
)) {
575 /* We shouldn't be writing to block devices in userspace */
576 VERIFY(!(flags
& FWRITE
));
580 old_umask
= umask(0);
583 * The construct 'flags - FREAD' conveniently maps combinations of
584 * FREAD and FWRITE to the corresponding O_RDONLY, O_WRONLY, and O_RDWR.
586 fd
= open64(realpath
, flags
- FREAD
, mode
);
590 (void) umask(old_umask
);
595 if (fstat64(fd
, &st
) == -1) {
602 /* In Linux, use an ioctl to get the size of a block device. */
603 if (S_ISBLK(st
.st_mode
)) {
604 if (ioctl(fd
, BLKGETSIZE64
, &st
.st_size
) != 0) {
611 (void) fcntl(fd
, F_SETFD
, FD_CLOEXEC
);
613 *vpp
= vp
= umem_zalloc(sizeof (vnode_t
), UMEM_NOFAIL
);
616 vp
->v_size
= st
.st_size
;
617 vp
->v_path
= spa_strdup(path
);
624 vn_openat(char *path
, int x1
, int flags
, int mode
, vnode_t
**vpp
, int x2
,
625 int x3
, vnode_t
*startvp
, int fd
)
627 char *realpath
= umem_alloc(strlen(path
) + 2, UMEM_NOFAIL
);
630 ASSERT(startvp
== rootdir
);
631 (void) sprintf(realpath
, "/%s", path
);
633 /* fd ignored for now, need if want to simulate nbmand support */
634 ret
= vn_open(realpath
, x1
, flags
, mode
, vpp
, x2
, x3
);
636 umem_free(realpath
, strlen(path
) + 2);
643 vn_rdwr(int uio
, vnode_t
*vp
, void *addr
, ssize_t len
, offset_t offset
,
644 int x1
, int x2
, rlim64_t x3
, void *x4
, ssize_t
*residp
)
646 ssize_t rc
, done
= 0, split
;
648 if (uio
== UIO_READ
) {
649 rc
= pread64(vp
->v_fd
, addr
, len
, offset
);
652 * To simulate partial disk writes, we split writes into two
653 * system calls so that the process can be killed in between.
655 split
= (len
> 0 ? rand() % len
: 0);
656 rc
= pwrite64(vp
->v_fd
, addr
, split
, offset
);
659 rc
= pwrite64(vp
->v_fd
, (char *)addr
+ split
,
660 len
- split
, offset
+ split
);
665 if (rc
== -1 && errno
== EINVAL
) {
667 * Under Linux, this most likely means an alignment issue
668 * (memory or disk) due to O_DIRECT, so we abort() in order to
669 * catch the offender.
680 *residp
= len
- done
;
681 else if (done
!= len
)
687 vn_close(vnode_t
*vp
)
690 spa_strfree(vp
->v_path
);
691 umem_free(vp
, sizeof (vnode_t
));
695 * At a minimum we need to update the size since vdev_reopen()
696 * will no longer call vn_openat().
699 fop_getattr(vnode_t
*vp
, vattr_t
*vap
)
703 if (fstat64(vp
->v_fd
, &st
) == -1) {
708 vap
->va_size
= st
.st_size
;
715 * =========================================================================
716 * Figure out which debugging statements to print
717 * =========================================================================
720 static char *dprintf_string
;
721 static int dprintf_print_all
;
724 dprintf_find_string(const char *string
)
726 char *tmp_str
= dprintf_string
;
727 int len
= strlen(string
);
730 * Find out if this is a string we want to print.
731 * String format: file1.c,function_name1,file2.c,file3.c
734 while (tmp_str
!= NULL
) {
735 if (strncmp(tmp_str
, string
, len
) == 0 &&
736 (tmp_str
[len
] == ',' || tmp_str
[len
] == '\0'))
738 tmp_str
= strchr(tmp_str
, ',');
740 tmp_str
++; /* Get rid of , */
746 dprintf_setup(int *argc
, char **argv
)
751 * Debugging can be specified two ways: by setting the
752 * environment variable ZFS_DEBUG, or by including a
753 * "debug=..." argument on the command line. The command
754 * line setting overrides the environment variable.
757 for (i
= 1; i
< *argc
; i
++) {
758 int len
= strlen("debug=");
759 /* First look for a command line argument */
760 if (strncmp("debug=", argv
[i
], len
) == 0) {
761 dprintf_string
= argv
[i
] + len
;
762 /* Remove from args */
763 for (j
= i
; j
< *argc
; j
++)
770 if (dprintf_string
== NULL
) {
771 /* Look for ZFS_DEBUG environment variable */
772 dprintf_string
= getenv("ZFS_DEBUG");
776 * Are we just turning on all debugging?
778 if (dprintf_find_string("on"))
779 dprintf_print_all
= 1;
783 * =========================================================================
785 * =========================================================================
788 __dprintf(const char *file
, const char *func
, int line
, const char *fmt
, ...)
794 * Get rid of annoying "../common/" prefix to filename.
796 newfile
= strrchr(file
, '/');
797 if (newfile
!= NULL
) {
798 newfile
= newfile
+ 1; /* Get rid of leading / */
803 if (dprintf_print_all
||
804 dprintf_find_string(newfile
) ||
805 dprintf_find_string(func
)) {
806 /* Print out just the function name if requested */
808 if (dprintf_find_string("pid"))
809 (void) printf("%d ", getpid());
810 if (dprintf_find_string("tid"))
811 (void) printf("%u ", (uint_t
) pthread_self());
812 if (dprintf_find_string("cpu"))
813 (void) printf("%u ", getcpuid());
814 if (dprintf_find_string("time"))
815 (void) printf("%llu ", gethrtime());
816 if (dprintf_find_string("long"))
817 (void) printf("%s, line %d: ", newfile
, line
);
818 (void) printf("%s: ", func
);
820 (void) vprintf(fmt
, adx
);
826 #endif /* ZFS_DEBUG */
829 * =========================================================================
830 * cmn_err() and panic()
831 * =========================================================================
833 static char ce_prefix
[CE_IGNORE
][10] = { "", "NOTICE: ", "WARNING: ", "" };
834 static char ce_suffix
[CE_IGNORE
][2] = { "", "\n", "\n", "" };
837 vpanic(const char *fmt
, va_list adx
)
839 (void) fprintf(stderr
, "error: ");
840 (void) vfprintf(stderr
, fmt
, adx
);
841 (void) fprintf(stderr
, "\n");
843 abort(); /* think of it as a "user-level crash dump" */
847 panic(const char *fmt
, ...)
857 vcmn_err(int ce
, const char *fmt
, va_list adx
)
861 if (ce
!= CE_NOTE
) { /* suppress noise in userland stress testing */
862 (void) fprintf(stderr
, "%s", ce_prefix
[ce
]);
863 (void) vfprintf(stderr
, fmt
, adx
);
864 (void) fprintf(stderr
, "%s", ce_suffix
[ce
]);
870 cmn_err(int ce
, const char *fmt
, ...)
875 vcmn_err(ce
, fmt
, adx
);
880 * =========================================================================
882 * =========================================================================
885 kobj_open_file(char *name
)
890 /* set vp as the _fd field of the file */
891 if (vn_openat(name
, UIO_SYSSPACE
, FREAD
, 0, &vp
, 0, 0, rootdir
,
893 return ((void *)-1UL);
895 file
= umem_zalloc(sizeof (struct _buf
), UMEM_NOFAIL
);
896 file
->_fd
= (intptr_t)vp
;
901 kobj_read_file(struct _buf
*file
, char *buf
, unsigned size
, unsigned off
)
905 vn_rdwr(UIO_READ
, (vnode_t
*)file
->_fd
, buf
, size
, (offset_t
)off
,
906 UIO_SYSSPACE
, 0, 0, 0, &resid
);
908 return (size
- resid
);
912 kobj_close_file(struct _buf
*file
)
914 vn_close((vnode_t
*)file
->_fd
);
915 umem_free(file
, sizeof (struct _buf
));
919 kobj_get_filesize(struct _buf
*file
, uint64_t *size
)
922 vnode_t
*vp
= (vnode_t
*)file
->_fd
;
924 if (fstat64(vp
->v_fd
, &st
) == -1) {
933 * =========================================================================
935 * =========================================================================
941 poll(0, 0, ticks
* (1000 / hz
));
945 * Find highest one bit set.
946 * Returns bit number + 1 of highest bit that is set, otherwise returns 0.
947 * High order bit is 31 (or 63 in _LP64 kernel).
957 if (i
& 0xffffffff00000000ul
) {
961 if (i
& 0xffff0000) {
979 static int random_fd
= -1, urandom_fd
= -1;
982 random_get_bytes_common(uint8_t *ptr
, size_t len
, int fd
)
990 bytes
= read(fd
, ptr
, resid
);
991 ASSERT3S(bytes
, >=, 0);
1000 random_get_bytes(uint8_t *ptr
, size_t len
)
1002 return (random_get_bytes_common(ptr
, len
, random_fd
));
1006 random_get_pseudo_bytes(uint8_t *ptr
, size_t len
)
1008 return (random_get_bytes_common(ptr
, len
, urandom_fd
));
1012 ddi_strtoul(const char *hw_serial
, char **nptr
, int base
, unsigned long *result
)
1016 *result
= strtoul(hw_serial
, &end
, base
);
1023 ddi_strtoull(const char *str
, char **nptr
, int base
, u_longlong_t
*result
)
1027 *result
= strtoull(str
, &end
, base
);
1034 * =========================================================================
1035 * kernel emulation setup & teardown
1036 * =========================================================================
1039 umem_out_of_memory(void)
1041 char errmsg
[] = "out of memory -- generating core dump\n";
1043 (void) fprintf(stderr
, "%s", errmsg
);
1049 kernel_init(int mode
)
1051 umem_nofail_callback(umem_out_of_memory
);
1053 physmem
= sysconf(_SC_PHYS_PAGES
);
1055 dprintf("physmem = %llu pages (%.2f GB)\n", physmem
,
1056 (double)physmem
* sysconf(_SC_PAGE_SIZE
) / (1ULL << 30));
1058 (void) snprintf(hw_serial
, sizeof (hw_serial
), "%ld",
1059 (mode
& FWRITE
) ? gethostid() : 0);
1061 VERIFY((random_fd
= open("/dev/random", O_RDONLY
)) != -1);
1062 VERIFY((urandom_fd
= open("/dev/urandom", O_RDONLY
)) != -1);
1065 system_taskq_init();
1075 system_taskq_fini();
1086 crgetuid(cred_t
*cr
)
1092 crgetgid(cred_t
*cr
)
1098 crgetngroups(cred_t
*cr
)
1104 crgetgroups(cred_t
*cr
)
1110 zfs_secpolicy_snapshot_perms(const char *name
, cred_t
*cr
)
1116 zfs_secpolicy_rename_perms(const char *from
, const char *to
, cred_t
*cr
)
1122 zfs_secpolicy_destroy_perms(const char *name
, cred_t
*cr
)
1128 ksid_lookupdomain(const char *dom
)
1132 kd
= umem_zalloc(sizeof (ksiddomain_t
), UMEM_NOFAIL
);
1133 kd
->kd_name
= spa_strdup(dom
);
1138 ksiddomain_rele(ksiddomain_t
*ksid
)
1140 spa_strfree(ksid
->kd_name
);
1141 umem_free(ksid
, sizeof (ksiddomain_t
));
1145 kmem_vasprintf(const char *fmt
, va_list adx
)
1150 va_copy(adx_copy
, adx
);
1151 VERIFY(vasprintf(&buf
, fmt
, adx_copy
) != -1);
1158 kmem_asprintf(const char *fmt
, ...)
1164 VERIFY(vasprintf(&buf
, fmt
, adx
) != -1);
1172 zfs_onexit_fd_hold(int fd
, minor_t
*minorp
)
1180 zfs_onexit_fd_rele(int fd
)
1186 zfs_onexit_add_cb(minor_t minor
, void (*func
)(void *), void *data
,
1187 uint64_t *action_handle
)
1194 zfs_onexit_del_cb(minor_t minor
, uint64_t action_handle
, boolean_t fire
)
1201 zfs_onexit_cb_data(minor_t minor
, uint64_t action_handle
, void **data
)