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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 | /* | |
b128c09f | 22 | * Copyright 2008 Sun Microsystems, Inc. All rights reserved. |
34dc7c2f BB |
23 | * Use is subject to license terms. |
24 | */ | |
25 | ||
b128c09f | 26 | #pragma ident "%Z%%M% %I% %E% SMI" |
34dc7c2f BB |
27 | |
28 | /* | |
29 | * ZFS Fault Injector | |
30 | * | |
31 | * This userland component takes a set of options and uses libzpool to translate | |
32 | * from a user-visible object type and name to an internal representation. | |
33 | * There are two basic types of faults: device faults and data faults. | |
34 | * | |
35 | * | |
36 | * DEVICE FAULTS | |
37 | * | |
38 | * Errors can be injected into a particular vdev using the '-d' option. This | |
39 | * option takes a path or vdev GUID to uniquely identify the device within a | |
40 | * pool. There are two types of errors that can be injected, EIO and ENXIO, | |
b128c09f | 41 | * that can be controlled through the '-e' option. The default is ENXIO. For |
34dc7c2f BB |
42 | * EIO failures, any attempt to read data from the device will return EIO, but |
43 | * subsequent attempt to reopen the device will succeed. For ENXIO failures, | |
44 | * any attempt to read from the device will return EIO, but any attempt to | |
45 | * reopen the device will also return ENXIO. | |
b128c09f BB |
46 | * For label faults, the -L option must be specified. This allows faults |
47 | * to be injected into either the nvlist or uberblock region of all the labels | |
48 | * for the specified device. | |
34dc7c2f BB |
49 | * |
50 | * This form of the command looks like: | |
51 | * | |
b128c09f | 52 | * zinject -d device [-e errno] [-L <uber | nvlist>] pool |
34dc7c2f BB |
53 | * |
54 | * | |
55 | * DATA FAULTS | |
56 | * | |
57 | * We begin with a tuple of the form: | |
58 | * | |
59 | * <type,level,range,object> | |
60 | * | |
61 | * type A string describing the type of data to target. Each type | |
62 | * implicitly describes how to interpret 'object'. Currently, | |
63 | * the following values are supported: | |
64 | * | |
65 | * data User data for a file | |
66 | * dnode Dnode for a file or directory | |
67 | * | |
68 | * The following MOS objects are special. Instead of injecting | |
69 | * errors on a particular object or blkid, we inject errors across | |
70 | * all objects of the given type. | |
71 | * | |
72 | * mos Any data in the MOS | |
73 | * mosdir object directory | |
74 | * config pool configuration | |
75 | * bplist blkptr list | |
76 | * spacemap spacemap | |
77 | * metaslab metaslab | |
78 | * errlog persistent error log | |
79 | * | |
80 | * level Object level. Defaults to '0', not applicable to all types. If | |
81 | * a range is given, this corresponds to the indirect block | |
82 | * corresponding to the specific range. | |
83 | * | |
84 | * range A numerical range [start,end) within the object. Defaults to | |
85 | * the full size of the file. | |
86 | * | |
87 | * object A string describing the logical location of the object. For | |
88 | * files and directories (currently the only supported types), | |
89 | * this is the path of the object on disk. | |
90 | * | |
91 | * This is translated, via libzpool, into the following internal representation: | |
92 | * | |
93 | * <type,objset,object,level,range> | |
94 | * | |
95 | * These types should be self-explanatory. This tuple is then passed to the | |
96 | * kernel via a special ioctl() to initiate fault injection for the given | |
97 | * object. Note that 'type' is not strictly necessary for fault injection, but | |
98 | * is used when translating existing faults into a human-readable string. | |
99 | * | |
100 | * | |
101 | * The command itself takes one of the forms: | |
102 | * | |
103 | * zinject | |
104 | * zinject <-a | -u pool> | |
105 | * zinject -c <id|all> | |
106 | * zinject [-q] <-t type> [-f freq] [-u] [-a] [-m] [-e errno] [-l level] | |
107 | * [-r range] <object> | |
108 | * zinject [-f freq] [-a] [-m] [-u] -b objset:object:level:start:end pool | |
109 | * | |
110 | * With no arguments, the command prints all currently registered injection | |
111 | * handlers, with their numeric identifiers. | |
112 | * | |
113 | * The '-c' option will clear the given handler, or all handlers if 'all' is | |
114 | * specified. | |
115 | * | |
116 | * The '-e' option takes a string describing the errno to simulate. This must | |
117 | * be either 'io' or 'checksum'. In most cases this will result in the same | |
118 | * behavior, but RAID-Z will produce a different set of ereports for this | |
119 | * situation. | |
120 | * | |
121 | * The '-a', '-u', and '-m' flags toggle internal flush behavior. If '-a' is | |
122 | * specified, then the ARC cache is flushed appropriately. If '-u' is | |
123 | * specified, then the underlying SPA is unloaded. Either of these flags can be | |
124 | * specified independently of any other handlers. The '-m' flag automatically | |
125 | * does an unmount and remount of the underlying dataset to aid in flushing the | |
126 | * cache. | |
127 | * | |
128 | * The '-f' flag controls the frequency of errors injected, expressed as a | |
129 | * integer percentage between 1 and 100. The default is 100. | |
130 | * | |
131 | * The this form is responsible for actually injecting the handler into the | |
132 | * framework. It takes the arguments described above, translates them to the | |
133 | * internal tuple using libzpool, and then issues an ioctl() to register the | |
134 | * handler. | |
135 | * | |
136 | * The final form can target a specific bookmark, regardless of whether a | |
137 | * human-readable interface has been designed. It allows developers to specify | |
138 | * a particular block by number. | |
139 | */ | |
140 | ||
141 | #include <errno.h> | |
142 | #include <fcntl.h> | |
143 | #include <stdio.h> | |
144 | #include <stdlib.h> | |
145 | #include <strings.h> | |
146 | #include <unistd.h> | |
147 | ||
148 | #include <sys/fs/zfs.h> | |
149 | #include <sys/mount.h> | |
150 | ||
151 | #include <libzfs.h> | |
152 | ||
153 | #undef verify /* both libzfs.h and zfs_context.h want to define this */ | |
154 | ||
155 | #include "zinject.h" | |
156 | ||
157 | libzfs_handle_t *g_zfs; | |
158 | int zfs_fd; | |
159 | ||
160 | #define ECKSUM EBADE | |
161 | ||
162 | static const char *errtable[TYPE_INVAL] = { | |
163 | "data", | |
164 | "dnode", | |
165 | "mos", | |
166 | "mosdir", | |
167 | "metaslab", | |
168 | "config", | |
169 | "bplist", | |
170 | "spacemap", | |
b128c09f BB |
171 | "errlog", |
172 | "uber", | |
173 | "nvlist" | |
34dc7c2f BB |
174 | }; |
175 | ||
176 | static err_type_t | |
177 | name_to_type(const char *arg) | |
178 | { | |
179 | int i; | |
180 | for (i = 0; i < TYPE_INVAL; i++) | |
181 | if (strcmp(errtable[i], arg) == 0) | |
182 | return (i); | |
183 | ||
184 | return (TYPE_INVAL); | |
185 | } | |
186 | ||
187 | static const char * | |
188 | type_to_name(uint64_t type) | |
189 | { | |
190 | switch (type) { | |
191 | case DMU_OT_OBJECT_DIRECTORY: | |
192 | return ("mosdir"); | |
193 | case DMU_OT_OBJECT_ARRAY: | |
194 | return ("metaslab"); | |
195 | case DMU_OT_PACKED_NVLIST: | |
196 | return ("config"); | |
197 | case DMU_OT_BPLIST: | |
198 | return ("bplist"); | |
199 | case DMU_OT_SPACE_MAP: | |
200 | return ("spacemap"); | |
201 | case DMU_OT_ERROR_LOG: | |
202 | return ("errlog"); | |
203 | default: | |
204 | return ("-"); | |
205 | } | |
206 | } | |
207 | ||
208 | ||
209 | /* | |
210 | * Print usage message. | |
211 | */ | |
212 | void | |
213 | usage(void) | |
214 | { | |
215 | (void) printf( | |
216 | "usage:\n" | |
217 | "\n" | |
218 | "\tzinject\n" | |
219 | "\n" | |
220 | "\t\tList all active injection records.\n" | |
221 | "\n" | |
222 | "\tzinject -c <id|all>\n" | |
223 | "\n" | |
224 | "\t\tClear the particular record (if given a numeric ID), or\n" | |
225 | "\t\tall records if 'all' is specificed.\n" | |
226 | "\n" | |
b128c09f BB |
227 | "\tzinject -d device [-e errno] [-L <nvlist|uber>] pool\n" |
228 | "\t\tInject a fault into a particular device or the device's\n" | |
229 | "\t\tlabel. Label injection can either be 'nvlist' or 'uber'.\n" | |
230 | "\t\t'errno' can either be 'nxio' (the default) or 'io'.\n" | |
34dc7c2f BB |
231 | "\n" |
232 | "\tzinject -b objset:object:level:blkid pool\n" | |
233 | "\n" | |
234 | "\t\tInject an error into pool 'pool' with the numeric bookmark\n" | |
235 | "\t\tspecified by the remaining tuple. Each number is in\n" | |
236 | "\t\thexidecimal, and only one block can be specified.\n" | |
237 | "\n" | |
238 | "\tzinject [-q] <-t type> [-e errno] [-l level] [-r range]\n" | |
239 | "\t [-a] [-m] [-u] [-f freq] <object>\n" | |
240 | "\n" | |
241 | "\t\tInject an error into the object specified by the '-t' option\n" | |
242 | "\t\tand the object descriptor. The 'object' parameter is\n" | |
243 | "\t\tinterperted depending on the '-t' option.\n" | |
244 | "\n" | |
245 | "\t\t-q\tQuiet mode. Only print out the handler number added.\n" | |
246 | "\t\t-e\tInject a specific error. Must be either 'io' or\n" | |
247 | "\t\t\t'checksum'. Default is 'io'.\n" | |
248 | "\t\t-l\tInject error at a particular block level. Default is " | |
249 | "0.\n" | |
250 | "\t\t-m\tAutomatically remount underlying filesystem.\n" | |
251 | "\t\t-r\tInject error over a particular logical range of an\n" | |
252 | "\t\t\tobject. Will be translated to the appropriate blkid\n" | |
253 | "\t\t\trange according to the object's properties.\n" | |
254 | "\t\t-a\tFlush the ARC cache. Can be specified without any\n" | |
255 | "\t\t\tassociated object.\n" | |
256 | "\t\t-u\tUnload the associated pool. Can be specified with only\n" | |
257 | "\t\t\ta pool object.\n" | |
258 | "\t\t-f\tOnly inject errors a fraction of the time. Expressed as\n" | |
259 | "\t\t\ta percentage between 1 and 100.\n" | |
260 | "\n" | |
261 | "\t-t data\t\tInject an error into the plain file contents of a\n" | |
262 | "\t\t\tfile. The object must be specified as a complete path\n" | |
263 | "\t\t\tto a file on a ZFS filesystem.\n" | |
264 | "\n" | |
265 | "\t-t dnode\tInject an error into the metadnode in the block\n" | |
266 | "\t\t\tcorresponding to the dnode for a file or directory. The\n" | |
267 | "\t\t\t'-r' option is incompatible with this mode. The object\n" | |
268 | "\t\t\tis specified as a complete path to a file or directory\n" | |
269 | "\t\t\ton a ZFS filesystem.\n" | |
270 | "\n" | |
271 | "\t-t <mos>\tInject errors into the MOS for objects of the given\n" | |
272 | "\t\t\ttype. Valid types are: mos, mosdir, config, bplist,\n" | |
273 | "\t\t\tspacemap, metaslab, errlog. The only valid <object> is\n" | |
274 | "\t\t\tthe poolname.\n"); | |
275 | } | |
276 | ||
277 | static int | |
278 | iter_handlers(int (*func)(int, const char *, zinject_record_t *, void *), | |
279 | void *data) | |
280 | { | |
281 | zfs_cmd_t zc; | |
282 | int ret; | |
283 | ||
284 | zc.zc_guid = 0; | |
285 | ||
286 | while (ioctl(zfs_fd, ZFS_IOC_INJECT_LIST_NEXT, &zc) == 0) | |
287 | if ((ret = func((int)zc.zc_guid, zc.zc_name, | |
288 | &zc.zc_inject_record, data)) != 0) | |
289 | return (ret); | |
290 | ||
291 | return (0); | |
292 | } | |
293 | ||
294 | static int | |
295 | print_data_handler(int id, const char *pool, zinject_record_t *record, | |
296 | void *data) | |
297 | { | |
298 | int *count = data; | |
299 | ||
300 | if (record->zi_guid != 0) | |
301 | return (0); | |
302 | ||
303 | if (*count == 0) { | |
304 | (void) printf("%3s %-15s %-6s %-6s %-8s %3s %-15s\n", | |
305 | "ID", "POOL", "OBJSET", "OBJECT", "TYPE", "LVL", "RANGE"); | |
306 | (void) printf("--- --------------- ------ " | |
307 | "------ -------- --- ---------------\n"); | |
308 | } | |
309 | ||
310 | *count += 1; | |
311 | ||
312 | (void) printf("%3d %-15s %-6llu %-6llu %-8s %3d ", id, pool, | |
313 | (u_longlong_t)record->zi_objset, (u_longlong_t)record->zi_object, | |
314 | type_to_name(record->zi_type), record->zi_level); | |
315 | ||
316 | if (record->zi_start == 0 && | |
317 | record->zi_end == -1ULL) | |
318 | (void) printf("all\n"); | |
319 | else | |
320 | (void) printf("[%llu, %llu]\n", (u_longlong_t)record->zi_start, | |
321 | (u_longlong_t)record->zi_end); | |
322 | ||
323 | return (0); | |
324 | } | |
325 | ||
326 | static int | |
327 | print_device_handler(int id, const char *pool, zinject_record_t *record, | |
328 | void *data) | |
329 | { | |
330 | int *count = data; | |
331 | ||
332 | if (record->zi_guid == 0) | |
333 | return (0); | |
334 | ||
335 | if (*count == 0) { | |
336 | (void) printf("%3s %-15s %s\n", "ID", "POOL", "GUID"); | |
337 | (void) printf("--- --------------- ----------------\n"); | |
338 | } | |
339 | ||
340 | *count += 1; | |
341 | ||
342 | (void) printf("%3d %-15s %llx\n", id, pool, | |
343 | (u_longlong_t)record->zi_guid); | |
344 | ||
345 | return (0); | |
346 | } | |
347 | ||
348 | /* | |
349 | * Print all registered error handlers. Returns the number of handlers | |
350 | * registered. | |
351 | */ | |
352 | static int | |
353 | print_all_handlers(void) | |
354 | { | |
355 | int count = 0; | |
356 | ||
357 | (void) iter_handlers(print_device_handler, &count); | |
358 | (void) printf("\n"); | |
359 | count = 0; | |
360 | (void) iter_handlers(print_data_handler, &count); | |
361 | ||
362 | return (count); | |
363 | } | |
364 | ||
365 | /* ARGSUSED */ | |
366 | static int | |
367 | cancel_one_handler(int id, const char *pool, zinject_record_t *record, | |
368 | void *data) | |
369 | { | |
370 | zfs_cmd_t zc; | |
371 | ||
372 | zc.zc_guid = (uint64_t)id; | |
373 | ||
374 | if (ioctl(zfs_fd, ZFS_IOC_CLEAR_FAULT, &zc) != 0) { | |
375 | (void) fprintf(stderr, "failed to remove handler %d: %s\n", | |
376 | id, strerror(errno)); | |
377 | return (1); | |
378 | } | |
379 | ||
380 | return (0); | |
381 | } | |
382 | ||
383 | /* | |
384 | * Remove all fault injection handlers. | |
385 | */ | |
386 | static int | |
387 | cancel_all_handlers(void) | |
388 | { | |
389 | int ret = iter_handlers(cancel_one_handler, NULL); | |
390 | ||
391 | (void) printf("removed all registered handlers\n"); | |
392 | ||
393 | return (ret); | |
394 | } | |
395 | ||
396 | /* | |
397 | * Remove a specific fault injection handler. | |
398 | */ | |
399 | static int | |
400 | cancel_handler(int id) | |
401 | { | |
402 | zfs_cmd_t zc; | |
403 | ||
404 | zc.zc_guid = (uint64_t)id; | |
405 | ||
406 | if (ioctl(zfs_fd, ZFS_IOC_CLEAR_FAULT, &zc) != 0) { | |
407 | (void) fprintf(stderr, "failed to remove handler %d: %s\n", | |
408 | id, strerror(errno)); | |
409 | return (1); | |
410 | } | |
411 | ||
412 | (void) printf("removed handler %d\n", id); | |
413 | ||
414 | return (0); | |
415 | } | |
416 | ||
417 | /* | |
418 | * Register a new fault injection handler. | |
419 | */ | |
420 | static int | |
421 | register_handler(const char *pool, int flags, zinject_record_t *record, | |
422 | int quiet) | |
423 | { | |
424 | zfs_cmd_t zc; | |
425 | ||
426 | (void) strcpy(zc.zc_name, pool); | |
427 | zc.zc_inject_record = *record; | |
428 | zc.zc_guid = flags; | |
429 | ||
430 | if (ioctl(zfs_fd, ZFS_IOC_INJECT_FAULT, &zc) != 0) { | |
431 | (void) fprintf(stderr, "failed to add handler: %s\n", | |
432 | strerror(errno)); | |
433 | return (1); | |
434 | } | |
435 | ||
436 | if (flags & ZINJECT_NULL) | |
437 | return (0); | |
438 | ||
439 | if (quiet) { | |
440 | (void) printf("%llu\n", (u_longlong_t)zc.zc_guid); | |
441 | } else { | |
442 | (void) printf("Added handler %llu with the following " | |
443 | "properties:\n", (u_longlong_t)zc.zc_guid); | |
444 | (void) printf(" pool: %s\n", pool); | |
445 | if (record->zi_guid) { | |
446 | (void) printf(" vdev: %llx\n", | |
447 | (u_longlong_t)record->zi_guid); | |
448 | } else { | |
449 | (void) printf("objset: %llu\n", | |
450 | (u_longlong_t)record->zi_objset); | |
451 | (void) printf("object: %llu\n", | |
452 | (u_longlong_t)record->zi_object); | |
453 | (void) printf(" type: %llu\n", | |
454 | (u_longlong_t)record->zi_type); | |
455 | (void) printf(" level: %d\n", record->zi_level); | |
456 | if (record->zi_start == 0 && | |
457 | record->zi_end == -1ULL) | |
458 | (void) printf(" range: all\n"); | |
459 | else | |
460 | (void) printf(" range: [%llu, %llu)\n", | |
461 | (u_longlong_t)record->zi_start, | |
462 | (u_longlong_t)record->zi_end); | |
463 | } | |
464 | } | |
465 | ||
466 | return (0); | |
467 | } | |
468 | ||
469 | int | |
470 | main(int argc, char **argv) | |
471 | { | |
472 | int c; | |
473 | char *range = NULL; | |
474 | char *cancel = NULL; | |
475 | char *end; | |
476 | char *raw = NULL; | |
477 | char *device = NULL; | |
478 | int level = 0; | |
479 | int quiet = 0; | |
480 | int error = 0; | |
481 | int domount = 0; | |
482 | err_type_t type = TYPE_INVAL; | |
b128c09f | 483 | err_type_t label = TYPE_INVAL; |
34dc7c2f BB |
484 | zinject_record_t record = { 0 }; |
485 | char pool[MAXNAMELEN]; | |
486 | char dataset[MAXNAMELEN]; | |
487 | zfs_handle_t *zhp; | |
488 | int ret; | |
489 | int flags = 0; | |
490 | ||
491 | if ((g_zfs = libzfs_init()) == NULL) { | |
492 | (void) fprintf(stderr, "internal error: failed to " | |
493 | "initialize ZFS library\n"); | |
494 | return (1); | |
495 | } | |
496 | ||
497 | libzfs_print_on_error(g_zfs, B_TRUE); | |
498 | ||
499 | if ((zfs_fd = open(ZFS_DEV, O_RDWR)) < 0) { | |
500 | (void) fprintf(stderr, "failed to open ZFS device\n"); | |
501 | return (1); | |
502 | } | |
503 | ||
504 | if (argc == 1) { | |
505 | /* | |
506 | * No arguments. Print the available handlers. If there are no | |
507 | * available handlers, direct the user to '-h' for help | |
508 | * information. | |
509 | */ | |
510 | if (print_all_handlers() == 0) { | |
511 | (void) printf("No handlers registered.\n"); | |
512 | (void) printf("Run 'zinject -h' for usage " | |
513 | "information.\n"); | |
514 | } | |
515 | ||
516 | return (0); | |
517 | } | |
518 | ||
b128c09f | 519 | while ((c = getopt(argc, argv, ":ab:d:f:qhc:t:l:mr:e:uL:")) != -1) { |
34dc7c2f BB |
520 | switch (c) { |
521 | case 'a': | |
522 | flags |= ZINJECT_FLUSH_ARC; | |
523 | break; | |
524 | case 'b': | |
525 | raw = optarg; | |
526 | break; | |
527 | case 'c': | |
528 | cancel = optarg; | |
529 | break; | |
530 | case 'd': | |
531 | device = optarg; | |
532 | break; | |
533 | case 'e': | |
534 | if (strcasecmp(optarg, "io") == 0) { | |
535 | error = EIO; | |
536 | } else if (strcasecmp(optarg, "checksum") == 0) { | |
537 | error = ECKSUM; | |
538 | } else if (strcasecmp(optarg, "nxio") == 0) { | |
539 | error = ENXIO; | |
540 | } else { | |
541 | (void) fprintf(stderr, "invalid error type " | |
542 | "'%s': must be 'io', 'checksum' or " | |
543 | "'nxio'\n", optarg); | |
544 | usage(); | |
545 | return (1); | |
546 | } | |
547 | break; | |
548 | case 'f': | |
549 | record.zi_freq = atoi(optarg); | |
550 | if (record.zi_freq < 1 || record.zi_freq > 100) { | |
551 | (void) fprintf(stderr, "frequency range must " | |
552 | "be in the range (0, 100]\n"); | |
553 | return (1); | |
554 | } | |
555 | break; | |
556 | case 'h': | |
557 | usage(); | |
558 | return (0); | |
559 | case 'l': | |
560 | level = (int)strtol(optarg, &end, 10); | |
561 | if (*end != '\0') { | |
562 | (void) fprintf(stderr, "invalid level '%s': " | |
563 | "must be an integer\n", optarg); | |
564 | usage(); | |
565 | return (1); | |
566 | } | |
567 | break; | |
568 | case 'm': | |
569 | domount = 1; | |
570 | break; | |
571 | case 'q': | |
572 | quiet = 1; | |
573 | break; | |
574 | case 'r': | |
575 | range = optarg; | |
576 | break; | |
577 | case 't': | |
b128c09f BB |
578 | if ((type = name_to_type(optarg)) == TYPE_INVAL && |
579 | !MOS_TYPE(type)) { | |
34dc7c2f BB |
580 | (void) fprintf(stderr, "invalid type '%s'\n", |
581 | optarg); | |
582 | usage(); | |
583 | return (1); | |
584 | } | |
585 | break; | |
586 | case 'u': | |
587 | flags |= ZINJECT_UNLOAD_SPA; | |
588 | break; | |
b128c09f BB |
589 | case 'L': |
590 | if ((label = name_to_type(optarg)) == TYPE_INVAL && | |
591 | !LABEL_TYPE(type)) { | |
592 | (void) fprintf(stderr, "invalid label type " | |
593 | "'%s'\n", optarg); | |
594 | usage(); | |
595 | return (1); | |
596 | } | |
597 | break; | |
34dc7c2f BB |
598 | case ':': |
599 | (void) fprintf(stderr, "option -%c requires an " | |
600 | "operand\n", optopt); | |
601 | usage(); | |
602 | return (1); | |
603 | case '?': | |
604 | (void) fprintf(stderr, "invalid option '%c'\n", | |
605 | optopt); | |
606 | usage(); | |
607 | return (2); | |
608 | } | |
609 | } | |
610 | ||
611 | argc -= optind; | |
612 | argv += optind; | |
613 | ||
614 | if (cancel != NULL) { | |
615 | /* | |
616 | * '-c' is invalid with any other options. | |
617 | */ | |
618 | if (raw != NULL || range != NULL || type != TYPE_INVAL || | |
619 | level != 0) { | |
620 | (void) fprintf(stderr, "cancel (-c) incompatible with " | |
621 | "any other options\n"); | |
622 | usage(); | |
623 | return (2); | |
624 | } | |
625 | if (argc != 0) { | |
626 | (void) fprintf(stderr, "extraneous argument to '-c'\n"); | |
627 | usage(); | |
628 | return (2); | |
629 | } | |
630 | ||
631 | if (strcmp(cancel, "all") == 0) { | |
632 | return (cancel_all_handlers()); | |
633 | } else { | |
634 | int id = (int)strtol(cancel, &end, 10); | |
635 | if (*end != '\0') { | |
636 | (void) fprintf(stderr, "invalid handle id '%s':" | |
637 | " must be an integer or 'all'\n", cancel); | |
638 | usage(); | |
639 | return (1); | |
640 | } | |
641 | return (cancel_handler(id)); | |
642 | } | |
643 | } | |
644 | ||
645 | if (device != NULL) { | |
646 | /* | |
647 | * Device (-d) injection uses a completely different mechanism | |
648 | * for doing injection, so handle it separately here. | |
649 | */ | |
650 | if (raw != NULL || range != NULL || type != TYPE_INVAL || | |
651 | level != 0) { | |
652 | (void) fprintf(stderr, "device (-d) incompatible with " | |
653 | "data error injection\n"); | |
654 | usage(); | |
655 | return (2); | |
656 | } | |
657 | ||
658 | if (argc != 1) { | |
659 | (void) fprintf(stderr, "device (-d) injection requires " | |
660 | "a single pool name\n"); | |
661 | usage(); | |
662 | return (2); | |
663 | } | |
664 | ||
665 | (void) strcpy(pool, argv[0]); | |
666 | dataset[0] = '\0'; | |
667 | ||
668 | if (error == ECKSUM) { | |
669 | (void) fprintf(stderr, "device error type must be " | |
670 | "'io' or 'nxio'\n"); | |
671 | return (1); | |
672 | } | |
673 | ||
b128c09f | 674 | if (translate_device(pool, device, label, &record) != 0) |
34dc7c2f BB |
675 | return (1); |
676 | if (!error) | |
677 | error = ENXIO; | |
678 | } else if (raw != NULL) { | |
679 | if (range != NULL || type != TYPE_INVAL || level != 0) { | |
680 | (void) fprintf(stderr, "raw (-b) format with " | |
681 | "any other options\n"); | |
682 | usage(); | |
683 | return (2); | |
684 | } | |
685 | ||
686 | if (argc != 1) { | |
687 | (void) fprintf(stderr, "raw (-b) format expects a " | |
688 | "single pool name\n"); | |
689 | usage(); | |
690 | return (2); | |
691 | } | |
692 | ||
693 | (void) strcpy(pool, argv[0]); | |
694 | dataset[0] = '\0'; | |
695 | ||
696 | if (error == ENXIO) { | |
697 | (void) fprintf(stderr, "data error type must be " | |
698 | "'checksum' or 'io'\n"); | |
699 | return (1); | |
700 | } | |
701 | ||
702 | if (translate_raw(raw, &record) != 0) | |
703 | return (1); | |
704 | if (!error) | |
705 | error = EIO; | |
706 | } else if (type == TYPE_INVAL) { | |
707 | if (flags == 0) { | |
708 | (void) fprintf(stderr, "at least one of '-b', '-d', " | |
709 | "'-t', '-a', or '-u' must be specified\n"); | |
710 | usage(); | |
711 | return (2); | |
712 | } | |
713 | ||
714 | if (argc == 1 && (flags & ZINJECT_UNLOAD_SPA)) { | |
715 | (void) strcpy(pool, argv[0]); | |
716 | dataset[0] = '\0'; | |
717 | } else if (argc != 0) { | |
718 | (void) fprintf(stderr, "extraneous argument for " | |
719 | "'-f'\n"); | |
720 | usage(); | |
721 | return (2); | |
722 | } | |
723 | ||
724 | flags |= ZINJECT_NULL; | |
725 | } else { | |
726 | if (argc != 1) { | |
727 | (void) fprintf(stderr, "missing object\n"); | |
728 | usage(); | |
729 | return (2); | |
730 | } | |
731 | ||
732 | if (error == ENXIO) { | |
733 | (void) fprintf(stderr, "data error type must be " | |
734 | "'checksum' or 'io'\n"); | |
735 | return (1); | |
736 | } | |
737 | ||
738 | if (translate_record(type, argv[0], range, level, &record, pool, | |
739 | dataset) != 0) | |
740 | return (1); | |
741 | if (!error) | |
742 | error = EIO; | |
743 | } | |
744 | ||
745 | /* | |
746 | * If this is pool-wide metadata, unmount everything. The ioctl() will | |
747 | * unload the pool, so that we trigger spa-wide reopen of metadata next | |
748 | * time we access the pool. | |
749 | */ | |
750 | if (dataset[0] != '\0' && domount) { | |
751 | if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_DATASET)) == NULL) | |
752 | return (1); | |
753 | ||
754 | if (zfs_unmount(zhp, NULL, 0) != 0) | |
755 | return (1); | |
756 | } | |
757 | ||
758 | record.zi_error = error; | |
759 | ||
760 | ret = register_handler(pool, flags, &record, quiet); | |
761 | ||
762 | if (dataset[0] != '\0' && domount) | |
763 | ret = (zfs_mount(zhp, NULL, 0) != 0); | |
764 | ||
765 | libzfs_fini(g_zfs); | |
766 | ||
767 | return (ret); | |
768 | } |