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34dc7c2f BB |
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 | /* | |
572e2857 | 22 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
a0bd735a | 23 | * Copyright (c) 2016 Actifio, Inc. All rights reserved. |
34dc7c2f BB |
24 | */ |
25 | ||
34dc7c2f BB |
26 | #include <assert.h> |
27 | #include <fcntl.h> | |
28 | #include <poll.h> | |
29 | #include <stdio.h> | |
30 | #include <stdlib.h> | |
31 | #include <string.h> | |
32 | #include <zlib.h> | |
9867e8be | 33 | #include <libgen.h> |
1e33ac1e | 34 | #include <sys/signal.h> |
34dc7c2f BB |
35 | #include <sys/spa.h> |
36 | #include <sys/stat.h> | |
37 | #include <sys/processor.h> | |
38 | #include <sys/zfs_context.h> | |
13fe0198 | 39 | #include <sys/rrwlock.h> |
34dc7c2f | 40 | #include <sys/utsname.h> |
d603ed6c | 41 | #include <sys/time.h> |
d164b209 | 42 | #include <sys/systeminfo.h> |
1eeb4562 | 43 | #include <zfs_fletcher.h> |
0b04990a | 44 | #include <sys/crypto/icp.h> |
34dc7c2f BB |
45 | |
46 | /* | |
47 | * Emulation of kernel services in userland. | |
48 | */ | |
49 | ||
428870ff | 50 | int aok; |
34dc7c2f BB |
51 | uint64_t physmem; |
52 | vnode_t *rootdir = (vnode_t *)0xabcd1234; | |
d164b209 | 53 | char hw_serial[HW_HOSTID_LEN]; |
f0e324f2 | 54 | struct utsname hw_utsname; |
ca67b33a | 55 | vmem_t *zio_arena = NULL; |
34dc7c2f | 56 | |
9867e8be MA |
57 | /* If set, all blocks read will be copied to the specified directory. */ |
58 | char *vn_dumpdir = NULL; | |
59 | ||
428870ff BB |
60 | /* this only exists to have its address taken */ |
61 | struct proc p0; | |
62 | ||
34dc7c2f BB |
63 | /* |
64 | * ========================================================================= | |
65 | * threads | |
66 | * ========================================================================= | |
c25b8f99 BB |
67 | * |
68 | * TS_STACK_MIN is dictated by the minimum allowed pthread stack size. While | |
69 | * TS_STACK_MAX is somewhat arbitrary, it was selected to be large enough for | |
70 | * the expected stack depth while small enough to avoid exhausting address | |
71 | * space with high thread counts. | |
34dc7c2f | 72 | */ |
c25b8f99 BB |
73 | #define TS_STACK_MIN MAX(PTHREAD_STACK_MIN, 32768) |
74 | #define TS_STACK_MAX (256 * 1024) | |
1e33ac1e | 75 | |
c25b8f99 | 76 | /*ARGSUSED*/ |
1e33ac1e | 77 | kthread_t * |
c25b8f99 | 78 | zk_thread_create(void (*func)(void *), void *arg, size_t stksize, int state) |
1e33ac1e | 79 | { |
1e33ac1e | 80 | pthread_attr_t attr; |
c25b8f99 | 81 | pthread_t tid; |
aa0ac7ca | 82 | char *stkstr; |
c25b8f99 | 83 | int detachstate = PTHREAD_CREATE_DETACHED; |
1e33ac1e | 84 | |
c25b8f99 | 85 | VERIFY0(pthread_attr_init(&attr)); |
1e33ac1e | 86 | |
c25b8f99 BB |
87 | if (state & TS_JOINABLE) |
88 | detachstate = PTHREAD_CREATE_JOINABLE; | |
1e33ac1e | 89 | |
aa0ac7ca BB |
90 | VERIFY0(pthread_attr_setdetachstate(&attr, detachstate)); |
91 | ||
1e33ac1e | 92 | /* |
aa0ac7ca BB |
93 | * We allow the default stack size in user space to be specified by |
94 | * setting the ZFS_STACK_SIZE environment variable. This allows us | |
95 | * the convenience of observing and debugging stack overruns in | |
96 | * user space. Explicitly specified stack sizes will be honored. | |
97 | * The usage of ZFS_STACK_SIZE is discussed further in the | |
98 | * ENVIRONMENT VARIABLES sections of the ztest(1) man page. | |
1e33ac1e | 99 | */ |
aa0ac7ca BB |
100 | if (stksize == 0) { |
101 | stkstr = getenv("ZFS_STACK_SIZE"); | |
102 | ||
103 | if (stkstr == NULL) | |
104 | stksize = TS_STACK_MAX; | |
105 | else | |
106 | stksize = MAX(atoi(stkstr), TS_STACK_MIN); | |
107 | } | |
108 | ||
109 | VERIFY3S(stksize, >, 0); | |
110 | stksize = P2ROUNDUP(MAX(stksize, TS_STACK_MIN), PAGESIZE); | |
c25b8f99 | 111 | |
206971d2 DR |
112 | /* |
113 | * If this ever fails, it may be because the stack size is not a | |
114 | * multiple of system page size. | |
115 | */ | |
aa0ac7ca BB |
116 | VERIFY0(pthread_attr_setstacksize(&attr, stksize)); |
117 | VERIFY0(pthread_attr_setguardsize(&attr, PAGESIZE)); | |
118 | ||
c25b8f99 | 119 | VERIFY0(pthread_create(&tid, &attr, (void *(*)(void *))func, arg)); |
aa0ac7ca | 120 | VERIFY0(pthread_attr_destroy(&attr)); |
1e33ac1e | 121 | |
c25b8f99 | 122 | return ((void *)(uintptr_t)tid); |
34dc7c2f BB |
123 | } |
124 | ||
125 | /* | |
126 | * ========================================================================= | |
127 | * kstats | |
128 | * ========================================================================= | |
129 | */ | |
130 | /*ARGSUSED*/ | |
131 | kstat_t * | |
330847ff MA |
132 | kstat_create(const char *module, int instance, const char *name, |
133 | const char *class, uchar_t type, ulong_t ndata, uchar_t ks_flag) | |
34dc7c2f BB |
134 | { |
135 | return (NULL); | |
136 | } | |
137 | ||
138 | /*ARGSUSED*/ | |
139 | void | |
140 | kstat_install(kstat_t *ksp) | |
141 | {} | |
142 | ||
143 | /*ARGSUSED*/ | |
144 | void | |
145 | kstat_delete(kstat_t *ksp) | |
146 | {} | |
147 | ||
1421c891 | 148 | /*ARGSUSED*/ |
330847ff MA |
149 | void |
150 | kstat_waitq_enter(kstat_io_t *kiop) | |
151 | {} | |
152 | ||
153 | /*ARGSUSED*/ | |
154 | void | |
155 | kstat_waitq_exit(kstat_io_t *kiop) | |
156 | {} | |
157 | ||
158 | /*ARGSUSED*/ | |
159 | void | |
160 | kstat_runq_enter(kstat_io_t *kiop) | |
161 | {} | |
162 | ||
163 | /*ARGSUSED*/ | |
164 | void | |
165 | kstat_runq_exit(kstat_io_t *kiop) | |
166 | {} | |
167 | ||
168 | /*ARGSUSED*/ | |
169 | void | |
170 | kstat_waitq_to_runq(kstat_io_t *kiop) | |
171 | {} | |
172 | ||
173 | /*ARGSUSED*/ | |
174 | void | |
175 | kstat_runq_back_to_waitq(kstat_io_t *kiop) | |
176 | {} | |
177 | ||
1421c891 PS |
178 | void |
179 | kstat_set_raw_ops(kstat_t *ksp, | |
180 | int (*headers)(char *buf, size_t size), | |
181 | int (*data)(char *buf, size_t size, void *data), | |
182 | void *(*addr)(kstat_t *ksp, loff_t index)) | |
183 | {} | |
184 | ||
34dc7c2f BB |
185 | /* |
186 | * ========================================================================= | |
187 | * mutexes | |
188 | * ========================================================================= | |
189 | */ | |
1e33ac1e | 190 | |
34dc7c2f | 191 | void |
1e33ac1e | 192 | mutex_init(kmutex_t *mp, char *name, int type, void *cookie) |
34dc7c2f | 193 | { |
c25b8f99 BB |
194 | VERIFY0(pthread_mutex_init(&mp->m_lock, NULL)); |
195 | memset(&mp->m_owner, 0, sizeof (pthread_t)); | |
34dc7c2f BB |
196 | } |
197 | ||
198 | void | |
1e33ac1e | 199 | mutex_destroy(kmutex_t *mp) |
34dc7c2f | 200 | { |
c25b8f99 | 201 | VERIFY0(pthread_mutex_destroy(&mp->m_lock)); |
34dc7c2f BB |
202 | } |
203 | ||
204 | void | |
205 | mutex_enter(kmutex_t *mp) | |
206 | { | |
c25b8f99 BB |
207 | VERIFY0(pthread_mutex_lock(&mp->m_lock)); |
208 | mp->m_owner = pthread_self(); | |
34dc7c2f BB |
209 | } |
210 | ||
211 | int | |
212 | mutex_tryenter(kmutex_t *mp) | |
213 | { | |
c25b8f99 BB |
214 | int error; |
215 | ||
216 | error = pthread_mutex_trylock(&mp->m_lock); | |
217 | if (error == 0) { | |
218 | mp->m_owner = pthread_self(); | |
34dc7c2f BB |
219 | return (1); |
220 | } else { | |
c25b8f99 | 221 | VERIFY3S(error, ==, EBUSY); |
34dc7c2f BB |
222 | return (0); |
223 | } | |
224 | } | |
225 | ||
226 | void | |
227 | mutex_exit(kmutex_t *mp) | |
228 | { | |
c25b8f99 BB |
229 | memset(&mp->m_owner, 0, sizeof (pthread_t)); |
230 | VERIFY0(pthread_mutex_unlock(&mp->m_lock)); | |
1e33ac1e BB |
231 | } |
232 | ||
34dc7c2f BB |
233 | /* |
234 | * ========================================================================= | |
235 | * rwlocks | |
236 | * ========================================================================= | |
237 | */ | |
1e33ac1e | 238 | |
34dc7c2f BB |
239 | void |
240 | rw_init(krwlock_t *rwlp, char *name, int type, void *arg) | |
241 | { | |
c25b8f99 | 242 | VERIFY0(pthread_rwlock_init(&rwlp->rw_lock, NULL)); |
1e33ac1e | 243 | rwlp->rw_readers = 0; |
c25b8f99 | 244 | rwlp->rw_owner = 0; |
34dc7c2f BB |
245 | } |
246 | ||
247 | void | |
248 | rw_destroy(krwlock_t *rwlp) | |
249 | { | |
c25b8f99 | 250 | VERIFY0(pthread_rwlock_destroy(&rwlp->rw_lock)); |
34dc7c2f BB |
251 | } |
252 | ||
253 | void | |
254 | rw_enter(krwlock_t *rwlp, krw_t rw) | |
255 | { | |
1e33ac1e | 256 | if (rw == RW_READER) { |
c25b8f99 | 257 | VERIFY0(pthread_rwlock_rdlock(&rwlp->rw_lock)); |
1e33ac1e BB |
258 | atomic_inc_uint(&rwlp->rw_readers); |
259 | } else { | |
c25b8f99 BB |
260 | VERIFY0(pthread_rwlock_wrlock(&rwlp->rw_lock)); |
261 | rwlp->rw_owner = pthread_self(); | |
1e33ac1e | 262 | } |
34dc7c2f BB |
263 | } |
264 | ||
265 | void | |
266 | rw_exit(krwlock_t *rwlp) | |
267 | { | |
1e33ac1e BB |
268 | if (RW_READ_HELD(rwlp)) |
269 | atomic_dec_uint(&rwlp->rw_readers); | |
270 | else | |
c25b8f99 | 271 | rwlp->rw_owner = 0; |
34dc7c2f | 272 | |
c25b8f99 | 273 | VERIFY0(pthread_rwlock_unlock(&rwlp->rw_lock)); |
34dc7c2f BB |
274 | } |
275 | ||
276 | int | |
277 | rw_tryenter(krwlock_t *rwlp, krw_t rw) | |
278 | { | |
c25b8f99 | 279 | int error; |
34dc7c2f BB |
280 | |
281 | if (rw == RW_READER) | |
c25b8f99 | 282 | error = pthread_rwlock_tryrdlock(&rwlp->rw_lock); |
34dc7c2f | 283 | else |
c25b8f99 | 284 | error = pthread_rwlock_trywrlock(&rwlp->rw_lock); |
1e33ac1e | 285 | |
c25b8f99 | 286 | if (error == 0) { |
1e33ac1e BB |
287 | if (rw == RW_READER) |
288 | atomic_inc_uint(&rwlp->rw_readers); | |
c25b8f99 BB |
289 | else |
290 | rwlp->rw_owner = pthread_self(); | |
1e33ac1e | 291 | |
34dc7c2f BB |
292 | return (1); |
293 | } | |
294 | ||
c25b8f99 | 295 | VERIFY3S(error, ==, EBUSY); |
1e33ac1e | 296 | |
34dc7c2f BB |
297 | return (0); |
298 | } | |
299 | ||
6cb8e530 PZ |
300 | /* ARGSUSED */ |
301 | uint32_t | |
302 | zone_get_hostid(void *zonep) | |
303 | { | |
304 | /* | |
305 | * We're emulating the system's hostid in userland. | |
306 | */ | |
307 | return (strtoul(hw_serial, NULL, 10)); | |
308 | } | |
309 | ||
34dc7c2f BB |
310 | int |
311 | rw_tryupgrade(krwlock_t *rwlp) | |
312 | { | |
34dc7c2f BB |
313 | return (0); |
314 | } | |
315 | ||
316 | /* | |
317 | * ========================================================================= | |
318 | * condition variables | |
319 | * ========================================================================= | |
320 | */ | |
1e33ac1e | 321 | |
34dc7c2f BB |
322 | void |
323 | cv_init(kcondvar_t *cv, char *name, int type, void *arg) | |
324 | { | |
c25b8f99 | 325 | VERIFY0(pthread_cond_init(cv, NULL)); |
34dc7c2f BB |
326 | } |
327 | ||
328 | void | |
329 | cv_destroy(kcondvar_t *cv) | |
330 | { | |
c25b8f99 | 331 | VERIFY0(pthread_cond_destroy(cv)); |
34dc7c2f BB |
332 | } |
333 | ||
334 | void | |
335 | cv_wait(kcondvar_t *cv, kmutex_t *mp) | |
336 | { | |
c25b8f99 BB |
337 | memset(&mp->m_owner, 0, sizeof (pthread_t)); |
338 | VERIFY0(pthread_cond_wait(cv, &mp->m_lock)); | |
339 | mp->m_owner = pthread_self(); | |
34dc7c2f BB |
340 | } |
341 | ||
342 | clock_t | |
343 | cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime) | |
344 | { | |
345 | int error; | |
1e33ac1e | 346 | struct timeval tv; |
6413c95f | 347 | struct timespec ts; |
34dc7c2f BB |
348 | clock_t delta; |
349 | ||
428870ff | 350 | delta = abstime - ddi_get_lbolt(); |
34dc7c2f BB |
351 | if (delta <= 0) |
352 | return (-1); | |
353 | ||
1e33ac1e BB |
354 | VERIFY(gettimeofday(&tv, NULL) == 0); |
355 | ||
356 | ts.tv_sec = tv.tv_sec + delta / hz; | |
67925abb | 357 | ts.tv_nsec = tv.tv_usec * NSEC_PER_USEC + (delta % hz) * (NANOSEC / hz); |
1e33ac1e BB |
358 | if (ts.tv_nsec >= NANOSEC) { |
359 | ts.tv_sec++; | |
360 | ts.tv_nsec -= NANOSEC; | |
361 | } | |
34dc7c2f | 362 | |
c25b8f99 BB |
363 | memset(&mp->m_owner, 0, sizeof (pthread_t)); |
364 | error = pthread_cond_timedwait(cv, &mp->m_lock, &ts); | |
365 | mp->m_owner = pthread_self(); | |
34dc7c2f | 366 | |
1e33ac1e | 367 | if (error == ETIMEDOUT) |
34dc7c2f BB |
368 | return (-1); |
369 | ||
206971d2 | 370 | VERIFY0(error); |
34dc7c2f BB |
371 | |
372 | return (1); | |
373 | } | |
374 | ||
63fd3c6c AL |
375 | /*ARGSUSED*/ |
376 | clock_t | |
377 | cv_timedwait_hires(kcondvar_t *cv, kmutex_t *mp, hrtime_t tim, hrtime_t res, | |
378 | int flag) | |
379 | { | |
380 | int error; | |
67925abb | 381 | struct timeval tv; |
6413c95f | 382 | struct timespec ts; |
63fd3c6c AL |
383 | hrtime_t delta; |
384 | ||
206971d2 DR |
385 | ASSERT(flag == 0 || flag == CALLOUT_FLAG_ABSOLUTE); |
386 | ||
387 | delta = tim; | |
388 | if (flag & CALLOUT_FLAG_ABSOLUTE) | |
389 | delta -= gethrtime(); | |
63fd3c6c | 390 | |
63fd3c6c AL |
391 | if (delta <= 0) |
392 | return (-1); | |
393 | ||
c25b8f99 | 394 | VERIFY0(gettimeofday(&tv, NULL)); |
67925abb BB |
395 | |
396 | ts.tv_sec = tv.tv_sec + delta / NANOSEC; | |
397 | ts.tv_nsec = tv.tv_usec * NSEC_PER_USEC + (delta % NANOSEC); | |
398 | if (ts.tv_nsec >= NANOSEC) { | |
399 | ts.tv_sec++; | |
400 | ts.tv_nsec -= NANOSEC; | |
401 | } | |
63fd3c6c | 402 | |
c25b8f99 BB |
403 | memset(&mp->m_owner, 0, sizeof (pthread_t)); |
404 | error = pthread_cond_timedwait(cv, &mp->m_lock, &ts); | |
405 | mp->m_owner = pthread_self(); | |
63fd3c6c | 406 | |
206971d2 | 407 | if (error == ETIMEDOUT) |
63fd3c6c AL |
408 | return (-1); |
409 | ||
206971d2 | 410 | VERIFY0(error); |
63fd3c6c AL |
411 | |
412 | return (1); | |
413 | } | |
414 | ||
34dc7c2f BB |
415 | void |
416 | cv_signal(kcondvar_t *cv) | |
417 | { | |
c25b8f99 | 418 | VERIFY0(pthread_cond_signal(cv)); |
34dc7c2f BB |
419 | } |
420 | ||
421 | void | |
422 | cv_broadcast(kcondvar_t *cv) | |
423 | { | |
c25b8f99 | 424 | VERIFY0(pthread_cond_broadcast(cv)); |
34dc7c2f BB |
425 | } |
426 | ||
d1261452 JG |
427 | /* |
428 | * ========================================================================= | |
429 | * procfs list | |
430 | * ========================================================================= | |
431 | */ | |
432 | ||
433 | void | |
434 | seq_printf(struct seq_file *m, const char *fmt, ...) | |
435 | {} | |
436 | ||
437 | void | |
438 | procfs_list_install(const char *module, | |
439 | const char *name, | |
440 | procfs_list_t *procfs_list, | |
441 | int (*show)(struct seq_file *f, void *p), | |
442 | int (*show_header)(struct seq_file *f), | |
443 | int (*clear)(procfs_list_t *procfs_list), | |
444 | size_t procfs_list_node_off) | |
445 | { | |
446 | mutex_init(&procfs_list->pl_lock, NULL, MUTEX_DEFAULT, NULL); | |
447 | list_create(&procfs_list->pl_list, | |
448 | procfs_list_node_off + sizeof (procfs_list_node_t), | |
449 | procfs_list_node_off + offsetof(procfs_list_node_t, pln_link)); | |
450 | procfs_list->pl_next_id = 1; | |
451 | procfs_list->pl_node_offset = procfs_list_node_off; | |
452 | } | |
453 | ||
454 | void | |
455 | procfs_list_uninstall(procfs_list_t *procfs_list) | |
456 | {} | |
457 | ||
458 | void | |
459 | procfs_list_destroy(procfs_list_t *procfs_list) | |
460 | { | |
461 | ASSERT(list_is_empty(&procfs_list->pl_list)); | |
462 | list_destroy(&procfs_list->pl_list); | |
463 | mutex_destroy(&procfs_list->pl_lock); | |
464 | } | |
465 | ||
466 | #define NODE_ID(procfs_list, obj) \ | |
467 | (((procfs_list_node_t *)(((char *)obj) + \ | |
468 | (procfs_list)->pl_node_offset))->pln_id) | |
469 | ||
470 | void | |
471 | procfs_list_add(procfs_list_t *procfs_list, void *p) | |
472 | { | |
473 | ASSERT(MUTEX_HELD(&procfs_list->pl_lock)); | |
474 | NODE_ID(procfs_list, p) = procfs_list->pl_next_id++; | |
475 | list_insert_tail(&procfs_list->pl_list, p); | |
476 | } | |
477 | ||
34dc7c2f BB |
478 | /* |
479 | * ========================================================================= | |
480 | * vnode operations | |
481 | * ========================================================================= | |
482 | */ | |
483 | /* | |
484 | * Note: for the xxxat() versions of these functions, we assume that the | |
485 | * starting vp is always rootdir (which is true for spa_directory.c, the only | |
486 | * ZFS consumer of these interfaces). We assert this is true, and then emulate | |
487 | * them by adding '/' in front of the path. | |
488 | */ | |
489 | ||
490 | /*ARGSUSED*/ | |
491 | int | |
492 | vn_open(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2, int x3) | |
493 | { | |
e2c292bb | 494 | int fd = -1; |
495 | int dump_fd = -1; | |
34dc7c2f | 496 | vnode_t *vp; |
a4914d38 | 497 | int old_umask = 0; |
5ae4e2c2 | 498 | char *realpath; |
34dc7c2f | 499 | struct stat64 st; |
4d58b69d | 500 | int err; |
34dc7c2f | 501 | |
5ae4e2c2 BB |
502 | realpath = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); |
503 | ||
34dc7c2f BB |
504 | /* |
505 | * If we're accessing a real disk from userland, we need to use | |
506 | * the character interface to avoid caching. This is particularly | |
507 | * important if we're trying to look at a real in-kernel storage | |
508 | * pool from userland, e.g. via zdb, because otherwise we won't | |
509 | * see the changes occurring under the segmap cache. | |
510 | * On the other hand, the stupid character device returns zero | |
511 | * for its size. So -- gag -- we open the block device to get | |
512 | * its size, and remember it for subsequent VOP_GETATTR(). | |
513 | */ | |
d603ed6c | 514 | #if defined(__sun__) || defined(__sun) |
34dc7c2f | 515 | if (strncmp(path, "/dev/", 5) == 0) { |
d603ed6c BB |
516 | #else |
517 | if (0) { | |
518 | #endif | |
34dc7c2f BB |
519 | char *dsk; |
520 | fd = open64(path, O_RDONLY); | |
5ae4e2c2 BB |
521 | if (fd == -1) { |
522 | err = errno; | |
523 | free(realpath); | |
524 | return (err); | |
525 | } | |
34dc7c2f | 526 | if (fstat64(fd, &st) == -1) { |
5ae4e2c2 | 527 | err = errno; |
34dc7c2f | 528 | close(fd); |
5ae4e2c2 BB |
529 | free(realpath); |
530 | return (err); | |
34dc7c2f BB |
531 | } |
532 | close(fd); | |
533 | (void) sprintf(realpath, "%s", path); | |
534 | dsk = strstr(path, "/dsk/"); | |
535 | if (dsk != NULL) | |
536 | (void) sprintf(realpath + (dsk - path) + 1, "r%s", | |
537 | dsk + 1); | |
538 | } else { | |
539 | (void) sprintf(realpath, "%s", path); | |
5ae4e2c2 BB |
540 | if (!(flags & FCREAT) && stat64(realpath, &st) == -1) { |
541 | err = errno; | |
542 | free(realpath); | |
543 | return (err); | |
544 | } | |
34dc7c2f BB |
545 | } |
546 | ||
d603ed6c BB |
547 | if (!(flags & FCREAT) && S_ISBLK(st.st_mode)) { |
548 | #ifdef __linux__ | |
549 | flags |= O_DIRECT; | |
550 | #endif | |
d603ed6c BB |
551 | } |
552 | ||
34dc7c2f BB |
553 | if (flags & FCREAT) |
554 | old_umask = umask(0); | |
555 | ||
556 | /* | |
557 | * The construct 'flags - FREAD' conveniently maps combinations of | |
558 | * FREAD and FWRITE to the corresponding O_RDONLY, O_WRONLY, and O_RDWR. | |
559 | */ | |
560 | fd = open64(realpath, flags - FREAD, mode); | |
470f12d6 G |
561 | if (fd == -1) { |
562 | err = errno; | |
563 | free(realpath); | |
564 | return (err); | |
565 | } | |
34dc7c2f BB |
566 | |
567 | if (flags & FCREAT) | |
568 | (void) umask(old_umask); | |
569 | ||
9867e8be MA |
570 | if (vn_dumpdir != NULL) { |
571 | char *dumppath = umem_zalloc(MAXPATHLEN, UMEM_NOFAIL); | |
572 | (void) snprintf(dumppath, MAXPATHLEN, | |
573 | "%s/%s", vn_dumpdir, basename(realpath)); | |
574 | dump_fd = open64(dumppath, O_CREAT | O_WRONLY, 0666); | |
575 | umem_free(dumppath, MAXPATHLEN); | |
576 | if (dump_fd == -1) { | |
577 | err = errno; | |
578 | free(realpath); | |
579 | close(fd); | |
580 | return (err); | |
581 | } | |
582 | } else { | |
583 | dump_fd = -1; | |
584 | } | |
585 | ||
586 | free(realpath); | |
587 | ||
8d4e8140 | 588 | if (fstat64_blk(fd, &st) == -1) { |
4d58b69d | 589 | err = errno; |
34dc7c2f | 590 | close(fd); |
e2c292bb | 591 | if (dump_fd != -1) |
592 | close(dump_fd); | |
4d58b69d | 593 | return (err); |
34dc7c2f BB |
594 | } |
595 | ||
596 | (void) fcntl(fd, F_SETFD, FD_CLOEXEC); | |
597 | ||
598 | *vpp = vp = umem_zalloc(sizeof (vnode_t), UMEM_NOFAIL); | |
599 | ||
600 | vp->v_fd = fd; | |
601 | vp->v_size = st.st_size; | |
602 | vp->v_path = spa_strdup(path); | |
9867e8be | 603 | vp->v_dump_fd = dump_fd; |
34dc7c2f BB |
604 | |
605 | return (0); | |
606 | } | |
607 | ||
608 | /*ARGSUSED*/ | |
609 | int | |
610 | vn_openat(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2, | |
611 | int x3, vnode_t *startvp, int fd) | |
612 | { | |
613 | char *realpath = umem_alloc(strlen(path) + 2, UMEM_NOFAIL); | |
614 | int ret; | |
615 | ||
616 | ASSERT(startvp == rootdir); | |
617 | (void) sprintf(realpath, "/%s", path); | |
618 | ||
619 | /* fd ignored for now, need if want to simulate nbmand support */ | |
620 | ret = vn_open(realpath, x1, flags, mode, vpp, x2, x3); | |
621 | ||
622 | umem_free(realpath, strlen(path) + 2); | |
623 | ||
624 | return (ret); | |
625 | } | |
626 | ||
627 | /*ARGSUSED*/ | |
628 | int | |
629 | vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len, offset_t offset, | |
e9aa730c | 630 | int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp) |
34dc7c2f | 631 | { |
4d58b69d | 632 | ssize_t rc, done = 0, split; |
34dc7c2f BB |
633 | |
634 | if (uio == UIO_READ) { | |
4d58b69d | 635 | rc = pread64(vp->v_fd, addr, len, offset); |
470f12d6 | 636 | if (vp->v_dump_fd != -1 && rc != -1) { |
928c58dd BB |
637 | int status; |
638 | status = pwrite64(vp->v_dump_fd, addr, rc, offset); | |
9867e8be MA |
639 | ASSERT(status != -1); |
640 | } | |
34dc7c2f BB |
641 | } else { |
642 | /* | |
643 | * To simulate partial disk writes, we split writes into two | |
644 | * system calls so that the process can be killed in between. | |
645 | */ | |
9ae529ec CS |
646 | int sectors = len >> SPA_MINBLOCKSHIFT; |
647 | split = (sectors > 0 ? rand() % sectors : 0) << | |
648 | SPA_MINBLOCKSHIFT; | |
4d58b69d RC |
649 | rc = pwrite64(vp->v_fd, addr, split, offset); |
650 | if (rc != -1) { | |
651 | done = rc; | |
652 | rc = pwrite64(vp->v_fd, (char *)addr + split, | |
653 | len - split, offset + split); | |
654 | } | |
34dc7c2f BB |
655 | } |
656 | ||
d603ed6c BB |
657 | #ifdef __linux__ |
658 | if (rc == -1 && errno == EINVAL) { | |
659 | /* | |
660 | * Under Linux, this most likely means an alignment issue | |
661 | * (memory or disk) due to O_DIRECT, so we abort() in order to | |
662 | * catch the offender. | |
663 | */ | |
d1d7e268 | 664 | abort(); |
d603ed6c BB |
665 | } |
666 | #endif | |
4d58b69d | 667 | if (rc == -1) |
34dc7c2f | 668 | return (errno); |
4d58b69d RC |
669 | |
670 | done += rc; | |
671 | ||
34dc7c2f | 672 | if (residp) |
4d58b69d RC |
673 | *residp = len - done; |
674 | else if (done != len) | |
34dc7c2f BB |
675 | return (EIO); |
676 | return (0); | |
677 | } | |
678 | ||
679 | void | |
680 | vn_close(vnode_t *vp) | |
681 | { | |
682 | close(vp->v_fd); | |
9867e8be MA |
683 | if (vp->v_dump_fd != -1) |
684 | close(vp->v_dump_fd); | |
34dc7c2f BB |
685 | spa_strfree(vp->v_path); |
686 | umem_free(vp, sizeof (vnode_t)); | |
687 | } | |
688 | ||
428870ff BB |
689 | /* |
690 | * At a minimum we need to update the size since vdev_reopen() | |
691 | * will no longer call vn_openat(). | |
692 | */ | |
693 | int | |
694 | fop_getattr(vnode_t *vp, vattr_t *vap) | |
695 | { | |
696 | struct stat64 st; | |
8d4e8140 | 697 | int err; |
428870ff | 698 | |
8d4e8140 RC |
699 | if (fstat64_blk(vp->v_fd, &st) == -1) { |
700 | err = errno; | |
428870ff | 701 | close(vp->v_fd); |
8d4e8140 | 702 | return (err); |
428870ff BB |
703 | } |
704 | ||
705 | vap->va_size = st.st_size; | |
706 | return (0); | |
707 | } | |
708 | ||
34dc7c2f BB |
709 | /* |
710 | * ========================================================================= | |
711 | * Figure out which debugging statements to print | |
712 | * ========================================================================= | |
713 | */ | |
714 | ||
715 | static char *dprintf_string; | |
716 | static int dprintf_print_all; | |
717 | ||
718 | int | |
719 | dprintf_find_string(const char *string) | |
720 | { | |
721 | char *tmp_str = dprintf_string; | |
722 | int len = strlen(string); | |
723 | ||
724 | /* | |
725 | * Find out if this is a string we want to print. | |
726 | * String format: file1.c,function_name1,file2.c,file3.c | |
727 | */ | |
728 | ||
729 | while (tmp_str != NULL) { | |
730 | if (strncmp(tmp_str, string, len) == 0 && | |
731 | (tmp_str[len] == ',' || tmp_str[len] == '\0')) | |
732 | return (1); | |
733 | tmp_str = strchr(tmp_str, ','); | |
734 | if (tmp_str != NULL) | |
735 | tmp_str++; /* Get rid of , */ | |
736 | } | |
737 | return (0); | |
738 | } | |
739 | ||
740 | void | |
741 | dprintf_setup(int *argc, char **argv) | |
742 | { | |
743 | int i, j; | |
744 | ||
745 | /* | |
746 | * Debugging can be specified two ways: by setting the | |
747 | * environment variable ZFS_DEBUG, or by including a | |
748 | * "debug=..." argument on the command line. The command | |
749 | * line setting overrides the environment variable. | |
750 | */ | |
751 | ||
752 | for (i = 1; i < *argc; i++) { | |
753 | int len = strlen("debug="); | |
754 | /* First look for a command line argument */ | |
755 | if (strncmp("debug=", argv[i], len) == 0) { | |
756 | dprintf_string = argv[i] + len; | |
757 | /* Remove from args */ | |
758 | for (j = i; j < *argc; j++) | |
759 | argv[j] = argv[j+1]; | |
760 | argv[j] = NULL; | |
761 | (*argc)--; | |
762 | } | |
763 | } | |
764 | ||
765 | if (dprintf_string == NULL) { | |
766 | /* Look for ZFS_DEBUG environment variable */ | |
767 | dprintf_string = getenv("ZFS_DEBUG"); | |
768 | } | |
769 | ||
770 | /* | |
771 | * Are we just turning on all debugging? | |
772 | */ | |
773 | if (dprintf_find_string("on")) | |
774 | dprintf_print_all = 1; | |
308a451f MA |
775 | |
776 | if (dprintf_string != NULL) | |
777 | zfs_flags |= ZFS_DEBUG_DPRINTF; | |
34dc7c2f BB |
778 | } |
779 | ||
780 | /* | |
781 | * ========================================================================= | |
782 | * debug printfs | |
783 | * ========================================================================= | |
784 | */ | |
785 | void | |
ab4c009e TC |
786 | __dprintf(boolean_t dprint, const char *file, const char *func, |
787 | int line, const char *fmt, ...) | |
34dc7c2f BB |
788 | { |
789 | const char *newfile; | |
790 | va_list adx; | |
791 | ||
792 | /* | |
793 | * Get rid of annoying "../common/" prefix to filename. | |
794 | */ | |
795 | newfile = strrchr(file, '/'); | |
796 | if (newfile != NULL) { | |
797 | newfile = newfile + 1; /* Get rid of leading / */ | |
798 | } else { | |
799 | newfile = file; | |
800 | } | |
801 | ||
ab4c009e TC |
802 | if (dprint) { |
803 | /* dprintf messages are printed immediately */ | |
804 | ||
805 | if (!dprintf_print_all && | |
806 | !dprintf_find_string(newfile) && | |
807 | !dprintf_find_string(func)) | |
808 | return; | |
809 | ||
34dc7c2f BB |
810 | /* Print out just the function name if requested */ |
811 | flockfile(stdout); | |
812 | if (dprintf_find_string("pid")) | |
813 | (void) printf("%d ", getpid()); | |
814 | if (dprintf_find_string("tid")) | |
02730c33 | 815 | (void) printf("%u ", (uint_t)pthread_self()); |
34dc7c2f BB |
816 | if (dprintf_find_string("cpu")) |
817 | (void) printf("%u ", getcpuid()); | |
818 | if (dprintf_find_string("time")) | |
819 | (void) printf("%llu ", gethrtime()); | |
820 | if (dprintf_find_string("long")) | |
821 | (void) printf("%s, line %d: ", newfile, line); | |
ab4c009e | 822 | (void) printf("dprintf: %s: ", func); |
34dc7c2f BB |
823 | va_start(adx, fmt); |
824 | (void) vprintf(fmt, adx); | |
825 | va_end(adx); | |
826 | funlockfile(stdout); | |
ab4c009e TC |
827 | } else { |
828 | /* zfs_dbgmsg is logged for dumping later */ | |
829 | size_t size; | |
830 | char *buf; | |
831 | int i; | |
832 | ||
833 | size = 1024; | |
834 | buf = umem_alloc(size, UMEM_NOFAIL); | |
835 | i = snprintf(buf, size, "%s:%d:%s(): ", newfile, line, func); | |
836 | ||
837 | if (i < size) { | |
838 | va_start(adx, fmt); | |
839 | (void) vsnprintf(buf + i, size - i, fmt, adx); | |
840 | va_end(adx); | |
841 | } | |
842 | ||
843 | __zfs_dbgmsg(buf); | |
844 | ||
845 | umem_free(buf, size); | |
34dc7c2f BB |
846 | } |
847 | } | |
848 | ||
34dc7c2f BB |
849 | /* |
850 | * ========================================================================= | |
851 | * cmn_err() and panic() | |
852 | * ========================================================================= | |
853 | */ | |
854 | static char ce_prefix[CE_IGNORE][10] = { "", "NOTICE: ", "WARNING: ", "" }; | |
855 | static char ce_suffix[CE_IGNORE][2] = { "", "\n", "\n", "" }; | |
856 | ||
857 | void | |
858 | vpanic(const char *fmt, va_list adx) | |
859 | { | |
860 | (void) fprintf(stderr, "error: "); | |
861 | (void) vfprintf(stderr, fmt, adx); | |
862 | (void) fprintf(stderr, "\n"); | |
863 | ||
864 | abort(); /* think of it as a "user-level crash dump" */ | |
865 | } | |
866 | ||
867 | void | |
868 | panic(const char *fmt, ...) | |
869 | { | |
870 | va_list adx; | |
871 | ||
872 | va_start(adx, fmt); | |
873 | vpanic(fmt, adx); | |
874 | va_end(adx); | |
875 | } | |
876 | ||
877 | void | |
878 | vcmn_err(int ce, const char *fmt, va_list adx) | |
879 | { | |
880 | if (ce == CE_PANIC) | |
881 | vpanic(fmt, adx); | |
882 | if (ce != CE_NOTE) { /* suppress noise in userland stress testing */ | |
883 | (void) fprintf(stderr, "%s", ce_prefix[ce]); | |
884 | (void) vfprintf(stderr, fmt, adx); | |
885 | (void) fprintf(stderr, "%s", ce_suffix[ce]); | |
886 | } | |
887 | } | |
888 | ||
889 | /*PRINTFLIKE2*/ | |
890 | void | |
891 | cmn_err(int ce, const char *fmt, ...) | |
892 | { | |
893 | va_list adx; | |
894 | ||
895 | va_start(adx, fmt); | |
896 | vcmn_err(ce, fmt, adx); | |
897 | va_end(adx); | |
898 | } | |
899 | ||
900 | /* | |
901 | * ========================================================================= | |
902 | * kobj interfaces | |
903 | * ========================================================================= | |
904 | */ | |
905 | struct _buf * | |
906 | kobj_open_file(char *name) | |
907 | { | |
908 | struct _buf *file; | |
909 | vnode_t *vp; | |
910 | ||
911 | /* set vp as the _fd field of the file */ | |
912 | if (vn_openat(name, UIO_SYSSPACE, FREAD, 0, &vp, 0, 0, rootdir, | |
913 | -1) != 0) | |
914 | return ((void *)-1UL); | |
915 | ||
916 | file = umem_zalloc(sizeof (struct _buf), UMEM_NOFAIL); | |
917 | file->_fd = (intptr_t)vp; | |
918 | return (file); | |
919 | } | |
920 | ||
921 | int | |
922 | kobj_read_file(struct _buf *file, char *buf, unsigned size, unsigned off) | |
923 | { | |
689f093e | 924 | ssize_t resid = 0; |
34dc7c2f | 925 | |
957dc932 RY |
926 | if (vn_rdwr(UIO_READ, (vnode_t *)file->_fd, buf, size, (offset_t)off, |
927 | UIO_SYSSPACE, 0, 0, 0, &resid) != 0) | |
928 | return (-1); | |
34dc7c2f BB |
929 | |
930 | return (size - resid); | |
931 | } | |
932 | ||
933 | void | |
934 | kobj_close_file(struct _buf *file) | |
935 | { | |
936 | vn_close((vnode_t *)file->_fd); | |
937 | umem_free(file, sizeof (struct _buf)); | |
938 | } | |
939 | ||
940 | int | |
941 | kobj_get_filesize(struct _buf *file, uint64_t *size) | |
942 | { | |
943 | struct stat64 st; | |
944 | vnode_t *vp = (vnode_t *)file->_fd; | |
945 | ||
946 | if (fstat64(vp->v_fd, &st) == -1) { | |
947 | vn_close(vp); | |
948 | return (errno); | |
949 | } | |
950 | *size = st.st_size; | |
951 | return (0); | |
952 | } | |
953 | ||
954 | /* | |
955 | * ========================================================================= | |
956 | * misc routines | |
957 | * ========================================================================= | |
958 | */ | |
959 | ||
960 | void | |
961 | delay(clock_t ticks) | |
962 | { | |
af4db70f | 963 | (void) poll(0, 0, ticks * (1000 / hz)); |
34dc7c2f BB |
964 | } |
965 | ||
966 | /* | |
967 | * Find highest one bit set. | |
46364cb2 BB |
968 | * Returns bit number + 1 of highest bit that is set, otherwise returns 0. |
969 | * The __builtin_clzll() function is supported by both GCC and Clang. | |
34dc7c2f BB |
970 | */ |
971 | int | |
9bd274dd | 972 | highbit64(uint64_t i) |
34dc7c2f | 973 | { |
34dc7c2f | 974 | if (i == 0) |
46364cb2 BB |
975 | return (0); |
976 | ||
977 | return (NBBY * sizeof (uint64_t) - __builtin_clzll(i)); | |
34dc7c2f BB |
978 | } |
979 | ||
193a37cb TH |
980 | /* |
981 | * Find lowest one bit set. | |
982 | * Returns bit number + 1 of lowest bit that is set, otherwise returns 0. | |
46364cb2 | 983 | * The __builtin_ffsll() function is supported by both GCC and Clang. |
193a37cb TH |
984 | */ |
985 | int | |
986 | lowbit64(uint64_t i) | |
987 | { | |
193a37cb TH |
988 | if (i == 0) |
989 | return (0); | |
990 | ||
46364cb2 | 991 | return (__builtin_ffsll(i)); |
0b04990a | 992 | } |
193a37cb | 993 | |
e1a0850c BB |
994 | char *random_path = "/dev/random"; |
995 | char *urandom_path = "/dev/urandom"; | |
34dc7c2f BB |
996 | static int random_fd = -1, urandom_fd = -1; |
997 | ||
0b04990a TC |
998 | void |
999 | random_init(void) | |
1000 | { | |
e1a0850c BB |
1001 | VERIFY((random_fd = open(random_path, O_RDONLY)) != -1); |
1002 | VERIFY((urandom_fd = open(urandom_path, O_RDONLY)) != -1); | |
0b04990a TC |
1003 | } |
1004 | ||
1005 | void | |
1006 | random_fini(void) | |
1007 | { | |
1008 | close(random_fd); | |
1009 | close(urandom_fd); | |
1010 | ||
1011 | random_fd = -1; | |
1012 | urandom_fd = -1; | |
1013 | } | |
1014 | ||
34dc7c2f BB |
1015 | static int |
1016 | random_get_bytes_common(uint8_t *ptr, size_t len, int fd) | |
1017 | { | |
1018 | size_t resid = len; | |
1019 | ssize_t bytes; | |
1020 | ||
1021 | ASSERT(fd != -1); | |
1022 | ||
1023 | while (resid != 0) { | |
1024 | bytes = read(fd, ptr, resid); | |
1025 | ASSERT3S(bytes, >=, 0); | |
1026 | ptr += bytes; | |
1027 | resid -= bytes; | |
1028 | } | |
1029 | ||
1030 | return (0); | |
1031 | } | |
1032 | ||
1033 | int | |
1034 | random_get_bytes(uint8_t *ptr, size_t len) | |
1035 | { | |
1036 | return (random_get_bytes_common(ptr, len, random_fd)); | |
1037 | } | |
1038 | ||
1039 | int | |
1040 | random_get_pseudo_bytes(uint8_t *ptr, size_t len) | |
1041 | { | |
1042 | return (random_get_bytes_common(ptr, len, urandom_fd)); | |
1043 | } | |
1044 | ||
1045 | int | |
1046 | ddi_strtoul(const char *hw_serial, char **nptr, int base, unsigned long *result) | |
1047 | { | |
1048 | char *end; | |
1049 | ||
1050 | *result = strtoul(hw_serial, &end, base); | |
1051 | if (*result == 0) | |
1052 | return (errno); | |
1053 | return (0); | |
1054 | } | |
1055 | ||
428870ff BB |
1056 | int |
1057 | ddi_strtoull(const char *str, char **nptr, int base, u_longlong_t *result) | |
1058 | { | |
1059 | char *end; | |
1060 | ||
1061 | *result = strtoull(str, &end, base); | |
1062 | if (*result == 0) | |
1063 | return (errno); | |
1064 | return (0); | |
1065 | } | |
1066 | ||
f0e324f2 BB |
1067 | utsname_t * |
1068 | utsname(void) | |
1069 | { | |
1070 | return (&hw_utsname); | |
1071 | } | |
1072 | ||
34dc7c2f BB |
1073 | /* |
1074 | * ========================================================================= | |
1075 | * kernel emulation setup & teardown | |
1076 | * ========================================================================= | |
1077 | */ | |
1078 | static int | |
1079 | umem_out_of_memory(void) | |
1080 | { | |
1081 | char errmsg[] = "out of memory -- generating core dump\n"; | |
1082 | ||
0e5b68e0 | 1083 | (void) fprintf(stderr, "%s", errmsg); |
34dc7c2f BB |
1084 | abort(); |
1085 | return (0); | |
1086 | } | |
1087 | ||
1088 | void | |
1089 | kernel_init(int mode) | |
1090 | { | |
13fe0198 MA |
1091 | extern uint_t rrw_tsd_key; |
1092 | ||
34dc7c2f BB |
1093 | umem_nofail_callback(umem_out_of_memory); |
1094 | ||
1095 | physmem = sysconf(_SC_PHYS_PAGES); | |
1096 | ||
1097 | dprintf("physmem = %llu pages (%.2f GB)\n", physmem, | |
1098 | (double)physmem * sysconf(_SC_PAGE_SIZE) / (1ULL << 30)); | |
1099 | ||
428870ff | 1100 | (void) snprintf(hw_serial, sizeof (hw_serial), "%ld", |
53698a45 | 1101 | (mode & FWRITE) ? get_system_hostid() : 0); |
34dc7c2f | 1102 | |
0b04990a TC |
1103 | random_init(); |
1104 | ||
f0e324f2 | 1105 | VERIFY0(uname(&hw_utsname)); |
34dc7c2f | 1106 | |
b128c09f | 1107 | system_taskq_init(); |
0b04990a | 1108 | icp_init(); |
b128c09f | 1109 | |
34dc7c2f | 1110 | spa_init(mode); |
13fe0198 | 1111 | |
1eeb4562 JX |
1112 | fletcher_4_init(); |
1113 | ||
13fe0198 | 1114 | tsd_create(&rrw_tsd_key, rrw_tsd_destroy); |
34dc7c2f BB |
1115 | } |
1116 | ||
1117 | void | |
1118 | kernel_fini(void) | |
1119 | { | |
1eeb4562 | 1120 | fletcher_4_fini(); |
34dc7c2f BB |
1121 | spa_fini(); |
1122 | ||
0b04990a | 1123 | icp_fini(); |
428870ff BB |
1124 | system_taskq_fini(); |
1125 | ||
0b04990a | 1126 | random_fini(); |
34dc7c2f BB |
1127 | } |
1128 | ||
34dc7c2f BB |
1129 | uid_t |
1130 | crgetuid(cred_t *cr) | |
1131 | { | |
1132 | return (0); | |
1133 | } | |
1134 | ||
6f1ffb06 MA |
1135 | uid_t |
1136 | crgetruid(cred_t *cr) | |
1137 | { | |
1138 | return (0); | |
1139 | } | |
1140 | ||
34dc7c2f BB |
1141 | gid_t |
1142 | crgetgid(cred_t *cr) | |
1143 | { | |
1144 | return (0); | |
1145 | } | |
1146 | ||
1147 | int | |
1148 | crgetngroups(cred_t *cr) | |
1149 | { | |
1150 | return (0); | |
1151 | } | |
1152 | ||
1153 | gid_t * | |
1154 | crgetgroups(cred_t *cr) | |
1155 | { | |
1156 | return (NULL); | |
1157 | } | |
1158 | ||
1159 | int | |
1160 | zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) | |
1161 | { | |
1162 | return (0); | |
1163 | } | |
1164 | ||
1165 | int | |
1166 | zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) | |
1167 | { | |
1168 | return (0); | |
1169 | } | |
1170 | ||
1171 | int | |
1172 | zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) | |
1173 | { | |
1174 | return (0); | |
1175 | } | |
1176 | ||
f74b821a BB |
1177 | int |
1178 | secpolicy_zfs(const cred_t *cr) | |
1179 | { | |
1180 | return (0); | |
1181 | } | |
1182 | ||
34dc7c2f BB |
1183 | ksiddomain_t * |
1184 | ksid_lookupdomain(const char *dom) | |
1185 | { | |
1186 | ksiddomain_t *kd; | |
1187 | ||
1188 | kd = umem_zalloc(sizeof (ksiddomain_t), UMEM_NOFAIL); | |
1189 | kd->kd_name = spa_strdup(dom); | |
1190 | return (kd); | |
1191 | } | |
1192 | ||
1193 | void | |
1194 | ksiddomain_rele(ksiddomain_t *ksid) | |
1195 | { | |
1196 | spa_strfree(ksid->kd_name); | |
1197 | umem_free(ksid, sizeof (ksiddomain_t)); | |
1198 | } | |
428870ff | 1199 | |
428870ff | 1200 | char * |
00b46022 | 1201 | kmem_vasprintf(const char *fmt, va_list adx) |
428870ff | 1202 | { |
00b46022 BB |
1203 | char *buf = NULL; |
1204 | va_list adx_copy; | |
428870ff | 1205 | |
00b46022 BB |
1206 | va_copy(adx_copy, adx); |
1207 | VERIFY(vasprintf(&buf, fmt, adx_copy) != -1); | |
1208 | va_end(adx_copy); | |
428870ff | 1209 | |
00b46022 BB |
1210 | return (buf); |
1211 | } | |
1212 | ||
1213 | char * | |
1214 | kmem_asprintf(const char *fmt, ...) | |
1215 | { | |
1216 | char *buf = NULL; | |
1217 | va_list adx; | |
428870ff BB |
1218 | |
1219 | va_start(adx, fmt); | |
00b46022 | 1220 | VERIFY(vasprintf(&buf, fmt, adx) != -1); |
428870ff BB |
1221 | va_end(adx); |
1222 | ||
1223 | return (buf); | |
1224 | } | |
572e2857 BB |
1225 | |
1226 | /* ARGSUSED */ | |
1227 | int | |
1228 | zfs_onexit_fd_hold(int fd, minor_t *minorp) | |
1229 | { | |
1230 | *minorp = 0; | |
1231 | return (0); | |
1232 | } | |
1233 | ||
1234 | /* ARGSUSED */ | |
1235 | void | |
1236 | zfs_onexit_fd_rele(int fd) | |
1237 | { | |
1238 | } | |
1239 | ||
1240 | /* ARGSUSED */ | |
1241 | int | |
1242 | zfs_onexit_add_cb(minor_t minor, void (*func)(void *), void *data, | |
1243 | uint64_t *action_handle) | |
1244 | { | |
1245 | return (0); | |
1246 | } | |
1247 | ||
1248 | /* ARGSUSED */ | |
1249 | int | |
1250 | zfs_onexit_del_cb(minor_t minor, uint64_t action_handle, boolean_t fire) | |
1251 | { | |
1252 | return (0); | |
1253 | } | |
1254 | ||
1255 | /* ARGSUSED */ | |
1256 | int | |
1257 | zfs_onexit_cb_data(minor_t minor, uint64_t action_handle, void **data) | |
1258 | { | |
1259 | return (0); | |
1260 | } | |
92119cc2 BB |
1261 | |
1262 | fstrans_cookie_t | |
1263 | spl_fstrans_mark(void) | |
1264 | { | |
02730c33 | 1265 | return ((fstrans_cookie_t)0); |
92119cc2 BB |
1266 | } |
1267 | ||
1268 | void | |
1269 | spl_fstrans_unmark(fstrans_cookie_t cookie) | |
1270 | { | |
1271 | } | |
1272 | ||
1273 | int | |
e624cd19 | 1274 | __spl_pf_fstrans_check(void) |
92119cc2 BB |
1275 | { |
1276 | return (0); | |
1277 | } | |
a0bd735a | 1278 | |
3ec34e55 BL |
1279 | int |
1280 | kmem_cache_reap_active(void) | |
1281 | { | |
1282 | return (0); | |
1283 | } | |
1284 | ||
47dfff3b MA |
1285 | void *zvol_tag = "zvol_tag"; |
1286 | ||
a0bd735a BP |
1287 | void |
1288 | zvol_create_minors(spa_t *spa, const char *name, boolean_t async) | |
1289 | { | |
1290 | } | |
1291 | ||
1292 | void | |
1293 | zvol_remove_minor(spa_t *spa, const char *name, boolean_t async) | |
1294 | { | |
1295 | } | |
1296 | ||
1297 | void | |
1298 | zvol_remove_minors(spa_t *spa, const char *name, boolean_t async) | |
1299 | { | |
1300 | } | |
1301 | ||
1302 | void | |
1303 | zvol_rename_minors(spa_t *spa, const char *oldname, const char *newname, | |
1304 | boolean_t async) | |
1305 | { | |
1306 | } |