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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 | /* | |
9babb374 | 22 | * Copyright 2009 Sun Microsystems, Inc. All rights reserved. |
34dc7c2f BB |
23 | * Use is subject to license terms. |
24 | */ | |
25 | ||
34dc7c2f BB |
26 | /* |
27 | * ZFS Fault Injector | |
28 | * | |
29 | * This userland component takes a set of options and uses libzpool to translate | |
30 | * from a user-visible object type and name to an internal representation. | |
31 | * There are two basic types of faults: device faults and data faults. | |
32 | * | |
33 | * | |
34 | * DEVICE FAULTS | |
35 | * | |
36 | * Errors can be injected into a particular vdev using the '-d' option. This | |
37 | * option takes a path or vdev GUID to uniquely identify the device within a | |
38 | * pool. There are two types of errors that can be injected, EIO and ENXIO, | |
b128c09f | 39 | * that can be controlled through the '-e' option. The default is ENXIO. For |
34dc7c2f BB |
40 | * EIO failures, any attempt to read data from the device will return EIO, but |
41 | * subsequent attempt to reopen the device will succeed. For ENXIO failures, | |
42 | * any attempt to read from the device will return EIO, but any attempt to | |
43 | * reopen the device will also return ENXIO. | |
b128c09f BB |
44 | * For label faults, the -L option must be specified. This allows faults |
45 | * to be injected into either the nvlist or uberblock region of all the labels | |
46 | * for the specified device. | |
34dc7c2f BB |
47 | * |
48 | * This form of the command looks like: | |
49 | * | |
b128c09f | 50 | * zinject -d device [-e errno] [-L <uber | nvlist>] pool |
34dc7c2f BB |
51 | * |
52 | * | |
53 | * DATA FAULTS | |
54 | * | |
55 | * We begin with a tuple of the form: | |
56 | * | |
57 | * <type,level,range,object> | |
58 | * | |
59 | * type A string describing the type of data to target. Each type | |
60 | * implicitly describes how to interpret 'object'. Currently, | |
61 | * the following values are supported: | |
62 | * | |
63 | * data User data for a file | |
64 | * dnode Dnode for a file or directory | |
65 | * | |
66 | * The following MOS objects are special. Instead of injecting | |
67 | * errors on a particular object or blkid, we inject errors across | |
68 | * all objects of the given type. | |
69 | * | |
70 | * mos Any data in the MOS | |
71 | * mosdir object directory | |
72 | * config pool configuration | |
73 | * bplist blkptr list | |
74 | * spacemap spacemap | |
75 | * metaslab metaslab | |
76 | * errlog persistent error log | |
77 | * | |
78 | * level Object level. Defaults to '0', not applicable to all types. If | |
79 | * a range is given, this corresponds to the indirect block | |
80 | * corresponding to the specific range. | |
81 | * | |
82 | * range A numerical range [start,end) within the object. Defaults to | |
83 | * the full size of the file. | |
84 | * | |
85 | * object A string describing the logical location of the object. For | |
86 | * files and directories (currently the only supported types), | |
87 | * this is the path of the object on disk. | |
88 | * | |
89 | * This is translated, via libzpool, into the following internal representation: | |
90 | * | |
91 | * <type,objset,object,level,range> | |
92 | * | |
93 | * These types should be self-explanatory. This tuple is then passed to the | |
94 | * kernel via a special ioctl() to initiate fault injection for the given | |
95 | * object. Note that 'type' is not strictly necessary for fault injection, but | |
96 | * is used when translating existing faults into a human-readable string. | |
97 | * | |
98 | * | |
99 | * The command itself takes one of the forms: | |
100 | * | |
101 | * zinject | |
102 | * zinject <-a | -u pool> | |
103 | * zinject -c <id|all> | |
104 | * zinject [-q] <-t type> [-f freq] [-u] [-a] [-m] [-e errno] [-l level] | |
105 | * [-r range] <object> | |
106 | * zinject [-f freq] [-a] [-m] [-u] -b objset:object:level:start:end pool | |
107 | * | |
108 | * With no arguments, the command prints all currently registered injection | |
109 | * handlers, with their numeric identifiers. | |
110 | * | |
111 | * The '-c' option will clear the given handler, or all handlers if 'all' is | |
112 | * specified. | |
113 | * | |
114 | * The '-e' option takes a string describing the errno to simulate. This must | |
115 | * be either 'io' or 'checksum'. In most cases this will result in the same | |
116 | * behavior, but RAID-Z will produce a different set of ereports for this | |
117 | * situation. | |
118 | * | |
119 | * The '-a', '-u', and '-m' flags toggle internal flush behavior. If '-a' is | |
120 | * specified, then the ARC cache is flushed appropriately. If '-u' is | |
121 | * specified, then the underlying SPA is unloaded. Either of these flags can be | |
122 | * specified independently of any other handlers. The '-m' flag automatically | |
123 | * does an unmount and remount of the underlying dataset to aid in flushing the | |
124 | * cache. | |
125 | * | |
126 | * The '-f' flag controls the frequency of errors injected, expressed as a | |
127 | * integer percentage between 1 and 100. The default is 100. | |
128 | * | |
129 | * The this form is responsible for actually injecting the handler into the | |
130 | * framework. It takes the arguments described above, translates them to the | |
131 | * internal tuple using libzpool, and then issues an ioctl() to register the | |
132 | * handler. | |
133 | * | |
134 | * The final form can target a specific bookmark, regardless of whether a | |
135 | * human-readable interface has been designed. It allows developers to specify | |
136 | * a particular block by number. | |
137 | */ | |
138 | ||
139 | #include <errno.h> | |
140 | #include <fcntl.h> | |
141 | #include <stdio.h> | |
142 | #include <stdlib.h> | |
143 | #include <strings.h> | |
144 | #include <unistd.h> | |
145 | ||
146 | #include <sys/fs/zfs.h> | |
147 | #include <sys/mount.h> | |
148 | ||
149 | #include <libzfs.h> | |
150 | ||
151 | #undef verify /* both libzfs.h and zfs_context.h want to define this */ | |
152 | ||
153 | #include "zinject.h" | |
154 | ||
155 | libzfs_handle_t *g_zfs; | |
156 | int zfs_fd; | |
157 | ||
158 | #define ECKSUM EBADE | |
159 | ||
160 | static const char *errtable[TYPE_INVAL] = { | |
161 | "data", | |
162 | "dnode", | |
163 | "mos", | |
164 | "mosdir", | |
165 | "metaslab", | |
166 | "config", | |
167 | "bplist", | |
168 | "spacemap", | |
b128c09f BB |
169 | "errlog", |
170 | "uber", | |
171 | "nvlist" | |
34dc7c2f BB |
172 | }; |
173 | ||
174 | static err_type_t | |
175 | name_to_type(const char *arg) | |
176 | { | |
177 | int i; | |
178 | for (i = 0; i < TYPE_INVAL; i++) | |
179 | if (strcmp(errtable[i], arg) == 0) | |
180 | return (i); | |
181 | ||
182 | return (TYPE_INVAL); | |
183 | } | |
184 | ||
185 | static const char * | |
186 | type_to_name(uint64_t type) | |
187 | { | |
188 | switch (type) { | |
189 | case DMU_OT_OBJECT_DIRECTORY: | |
190 | return ("mosdir"); | |
191 | case DMU_OT_OBJECT_ARRAY: | |
192 | return ("metaslab"); | |
193 | case DMU_OT_PACKED_NVLIST: | |
194 | return ("config"); | |
195 | case DMU_OT_BPLIST: | |
196 | return ("bplist"); | |
197 | case DMU_OT_SPACE_MAP: | |
198 | return ("spacemap"); | |
199 | case DMU_OT_ERROR_LOG: | |
200 | return ("errlog"); | |
201 | default: | |
202 | return ("-"); | |
203 | } | |
204 | } | |
205 | ||
206 | ||
207 | /* | |
208 | * Print usage message. | |
209 | */ | |
210 | void | |
211 | usage(void) | |
212 | { | |
213 | (void) printf( | |
214 | "usage:\n" | |
215 | "\n" | |
216 | "\tzinject\n" | |
217 | "\n" | |
218 | "\t\tList all active injection records.\n" | |
219 | "\n" | |
220 | "\tzinject -c <id|all>\n" | |
221 | "\n" | |
222 | "\t\tClear the particular record (if given a numeric ID), or\n" | |
223 | "\t\tall records if 'all' is specificed.\n" | |
224 | "\n" | |
9babb374 | 225 | "\tzinject -d device [-e errno] [-L <nvlist|uber>] [-F] pool\n" |
b128c09f BB |
226 | "\t\tInject a fault into a particular device or the device's\n" |
227 | "\t\tlabel. Label injection can either be 'nvlist' or 'uber'.\n" | |
228 | "\t\t'errno' can either be 'nxio' (the default) or 'io'.\n" | |
34dc7c2f BB |
229 | "\n" |
230 | "\tzinject -b objset:object:level:blkid pool\n" | |
231 | "\n" | |
232 | "\t\tInject an error into pool 'pool' with the numeric bookmark\n" | |
233 | "\t\tspecified by the remaining tuple. Each number is in\n" | |
234 | "\t\thexidecimal, and only one block can be specified.\n" | |
235 | "\n" | |
236 | "\tzinject [-q] <-t type> [-e errno] [-l level] [-r range]\n" | |
237 | "\t [-a] [-m] [-u] [-f freq] <object>\n" | |
238 | "\n" | |
239 | "\t\tInject an error into the object specified by the '-t' option\n" | |
240 | "\t\tand the object descriptor. The 'object' parameter is\n" | |
241 | "\t\tinterperted depending on the '-t' option.\n" | |
242 | "\n" | |
243 | "\t\t-q\tQuiet mode. Only print out the handler number added.\n" | |
244 | "\t\t-e\tInject a specific error. Must be either 'io' or\n" | |
245 | "\t\t\t'checksum'. Default is 'io'.\n" | |
246 | "\t\t-l\tInject error at a particular block level. Default is " | |
247 | "0.\n" | |
248 | "\t\t-m\tAutomatically remount underlying filesystem.\n" | |
249 | "\t\t-r\tInject error over a particular logical range of an\n" | |
250 | "\t\t\tobject. Will be translated to the appropriate blkid\n" | |
251 | "\t\t\trange according to the object's properties.\n" | |
252 | "\t\t-a\tFlush the ARC cache. Can be specified without any\n" | |
253 | "\t\t\tassociated object.\n" | |
254 | "\t\t-u\tUnload the associated pool. Can be specified with only\n" | |
255 | "\t\t\ta pool object.\n" | |
256 | "\t\t-f\tOnly inject errors a fraction of the time. Expressed as\n" | |
257 | "\t\t\ta percentage between 1 and 100.\n" | |
258 | "\n" | |
259 | "\t-t data\t\tInject an error into the plain file contents of a\n" | |
260 | "\t\t\tfile. The object must be specified as a complete path\n" | |
261 | "\t\t\tto a file on a ZFS filesystem.\n" | |
262 | "\n" | |
263 | "\t-t dnode\tInject an error into the metadnode in the block\n" | |
264 | "\t\t\tcorresponding to the dnode for a file or directory. The\n" | |
265 | "\t\t\t'-r' option is incompatible with this mode. The object\n" | |
266 | "\t\t\tis specified as a complete path to a file or directory\n" | |
267 | "\t\t\ton a ZFS filesystem.\n" | |
268 | "\n" | |
269 | "\t-t <mos>\tInject errors into the MOS for objects of the given\n" | |
270 | "\t\t\ttype. Valid types are: mos, mosdir, config, bplist,\n" | |
271 | "\t\t\tspacemap, metaslab, errlog. The only valid <object> is\n" | |
272 | "\t\t\tthe poolname.\n"); | |
273 | } | |
274 | ||
275 | static int | |
276 | iter_handlers(int (*func)(int, const char *, zinject_record_t *, void *), | |
277 | void *data) | |
278 | { | |
279 | zfs_cmd_t zc; | |
280 | int ret; | |
281 | ||
282 | zc.zc_guid = 0; | |
283 | ||
284 | while (ioctl(zfs_fd, ZFS_IOC_INJECT_LIST_NEXT, &zc) == 0) | |
285 | if ((ret = func((int)zc.zc_guid, zc.zc_name, | |
286 | &zc.zc_inject_record, data)) != 0) | |
287 | return (ret); | |
288 | ||
289 | return (0); | |
290 | } | |
291 | ||
292 | static int | |
293 | print_data_handler(int id, const char *pool, zinject_record_t *record, | |
294 | void *data) | |
295 | { | |
296 | int *count = data; | |
297 | ||
298 | if (record->zi_guid != 0) | |
299 | return (0); | |
300 | ||
301 | if (*count == 0) { | |
302 | (void) printf("%3s %-15s %-6s %-6s %-8s %3s %-15s\n", | |
303 | "ID", "POOL", "OBJSET", "OBJECT", "TYPE", "LVL", "RANGE"); | |
304 | (void) printf("--- --------------- ------ " | |
305 | "------ -------- --- ---------------\n"); | |
306 | } | |
307 | ||
308 | *count += 1; | |
309 | ||
310 | (void) printf("%3d %-15s %-6llu %-6llu %-8s %3d ", id, pool, | |
311 | (u_longlong_t)record->zi_objset, (u_longlong_t)record->zi_object, | |
312 | type_to_name(record->zi_type), record->zi_level); | |
313 | ||
314 | if (record->zi_start == 0 && | |
315 | record->zi_end == -1ULL) | |
316 | (void) printf("all\n"); | |
317 | else | |
318 | (void) printf("[%llu, %llu]\n", (u_longlong_t)record->zi_start, | |
319 | (u_longlong_t)record->zi_end); | |
320 | ||
321 | return (0); | |
322 | } | |
323 | ||
324 | static int | |
325 | print_device_handler(int id, const char *pool, zinject_record_t *record, | |
326 | void *data) | |
327 | { | |
328 | int *count = data; | |
329 | ||
330 | if (record->zi_guid == 0) | |
331 | return (0); | |
332 | ||
333 | if (*count == 0) { | |
334 | (void) printf("%3s %-15s %s\n", "ID", "POOL", "GUID"); | |
335 | (void) printf("--- --------------- ----------------\n"); | |
336 | } | |
337 | ||
338 | *count += 1; | |
339 | ||
340 | (void) printf("%3d %-15s %llx\n", id, pool, | |
341 | (u_longlong_t)record->zi_guid); | |
342 | ||
343 | return (0); | |
344 | } | |
345 | ||
346 | /* | |
347 | * Print all registered error handlers. Returns the number of handlers | |
348 | * registered. | |
349 | */ | |
350 | static int | |
351 | print_all_handlers(void) | |
352 | { | |
353 | int count = 0; | |
354 | ||
355 | (void) iter_handlers(print_device_handler, &count); | |
356 | (void) printf("\n"); | |
357 | count = 0; | |
358 | (void) iter_handlers(print_data_handler, &count); | |
359 | ||
360 | return (count); | |
361 | } | |
362 | ||
363 | /* ARGSUSED */ | |
364 | static int | |
365 | cancel_one_handler(int id, const char *pool, zinject_record_t *record, | |
366 | void *data) | |
367 | { | |
368 | zfs_cmd_t zc; | |
369 | ||
370 | zc.zc_guid = (uint64_t)id; | |
371 | ||
372 | if (ioctl(zfs_fd, ZFS_IOC_CLEAR_FAULT, &zc) != 0) { | |
373 | (void) fprintf(stderr, "failed to remove handler %d: %s\n", | |
374 | id, strerror(errno)); | |
375 | return (1); | |
376 | } | |
377 | ||
378 | return (0); | |
379 | } | |
380 | ||
381 | /* | |
382 | * Remove all fault injection handlers. | |
383 | */ | |
384 | static int | |
385 | cancel_all_handlers(void) | |
386 | { | |
387 | int ret = iter_handlers(cancel_one_handler, NULL); | |
388 | ||
389 | (void) printf("removed all registered handlers\n"); | |
390 | ||
391 | return (ret); | |
392 | } | |
393 | ||
394 | /* | |
395 | * Remove a specific fault injection handler. | |
396 | */ | |
397 | static int | |
398 | cancel_handler(int id) | |
399 | { | |
400 | zfs_cmd_t zc; | |
401 | ||
402 | zc.zc_guid = (uint64_t)id; | |
403 | ||
404 | if (ioctl(zfs_fd, ZFS_IOC_CLEAR_FAULT, &zc) != 0) { | |
405 | (void) fprintf(stderr, "failed to remove handler %d: %s\n", | |
406 | id, strerror(errno)); | |
407 | return (1); | |
408 | } | |
409 | ||
410 | (void) printf("removed handler %d\n", id); | |
411 | ||
412 | return (0); | |
413 | } | |
414 | ||
415 | /* | |
416 | * Register a new fault injection handler. | |
417 | */ | |
418 | static int | |
419 | register_handler(const char *pool, int flags, zinject_record_t *record, | |
420 | int quiet) | |
421 | { | |
422 | zfs_cmd_t zc; | |
423 | ||
424 | (void) strcpy(zc.zc_name, pool); | |
425 | zc.zc_inject_record = *record; | |
426 | zc.zc_guid = flags; | |
427 | ||
428 | if (ioctl(zfs_fd, ZFS_IOC_INJECT_FAULT, &zc) != 0) { | |
429 | (void) fprintf(stderr, "failed to add handler: %s\n", | |
430 | strerror(errno)); | |
431 | return (1); | |
432 | } | |
433 | ||
434 | if (flags & ZINJECT_NULL) | |
435 | return (0); | |
436 | ||
437 | if (quiet) { | |
438 | (void) printf("%llu\n", (u_longlong_t)zc.zc_guid); | |
439 | } else { | |
440 | (void) printf("Added handler %llu with the following " | |
441 | "properties:\n", (u_longlong_t)zc.zc_guid); | |
442 | (void) printf(" pool: %s\n", pool); | |
443 | if (record->zi_guid) { | |
444 | (void) printf(" vdev: %llx\n", | |
445 | (u_longlong_t)record->zi_guid); | |
446 | } else { | |
447 | (void) printf("objset: %llu\n", | |
448 | (u_longlong_t)record->zi_objset); | |
449 | (void) printf("object: %llu\n", | |
450 | (u_longlong_t)record->zi_object); | |
451 | (void) printf(" type: %llu\n", | |
452 | (u_longlong_t)record->zi_type); | |
453 | (void) printf(" level: %d\n", record->zi_level); | |
454 | if (record->zi_start == 0 && | |
455 | record->zi_end == -1ULL) | |
456 | (void) printf(" range: all\n"); | |
457 | else | |
458 | (void) printf(" range: [%llu, %llu)\n", | |
459 | (u_longlong_t)record->zi_start, | |
460 | (u_longlong_t)record->zi_end); | |
461 | } | |
462 | } | |
463 | ||
464 | return (0); | |
465 | } | |
466 | ||
467 | int | |
468 | main(int argc, char **argv) | |
469 | { | |
470 | int c; | |
471 | char *range = NULL; | |
472 | char *cancel = NULL; | |
473 | char *end; | |
474 | char *raw = NULL; | |
475 | char *device = NULL; | |
476 | int level = 0; | |
477 | int quiet = 0; | |
478 | int error = 0; | |
479 | int domount = 0; | |
480 | err_type_t type = TYPE_INVAL; | |
b128c09f | 481 | err_type_t label = TYPE_INVAL; |
34dc7c2f BB |
482 | zinject_record_t record = { 0 }; |
483 | char pool[MAXNAMELEN]; | |
484 | char dataset[MAXNAMELEN]; | |
485 | zfs_handle_t *zhp; | |
486 | int ret; | |
487 | int flags = 0; | |
488 | ||
489 | if ((g_zfs = libzfs_init()) == NULL) { | |
490 | (void) fprintf(stderr, "internal error: failed to " | |
491 | "initialize ZFS library\n"); | |
492 | return (1); | |
493 | } | |
494 | ||
495 | libzfs_print_on_error(g_zfs, B_TRUE); | |
496 | ||
497 | if ((zfs_fd = open(ZFS_DEV, O_RDWR)) < 0) { | |
498 | (void) fprintf(stderr, "failed to open ZFS device\n"); | |
499 | return (1); | |
500 | } | |
501 | ||
502 | if (argc == 1) { | |
503 | /* | |
504 | * No arguments. Print the available handlers. If there are no | |
505 | * available handlers, direct the user to '-h' for help | |
506 | * information. | |
507 | */ | |
508 | if (print_all_handlers() == 0) { | |
509 | (void) printf("No handlers registered.\n"); | |
510 | (void) printf("Run 'zinject -h' for usage " | |
511 | "information.\n"); | |
512 | } | |
513 | ||
514 | return (0); | |
515 | } | |
516 | ||
9babb374 | 517 | while ((c = getopt(argc, argv, ":ab:d:f:Fqhc:t:l:mr:e:uL:")) != -1) { |
34dc7c2f BB |
518 | switch (c) { |
519 | case 'a': | |
520 | flags |= ZINJECT_FLUSH_ARC; | |
521 | break; | |
522 | case 'b': | |
523 | raw = optarg; | |
524 | break; | |
525 | case 'c': | |
526 | cancel = optarg; | |
527 | break; | |
528 | case 'd': | |
529 | device = optarg; | |
530 | break; | |
531 | case 'e': | |
532 | if (strcasecmp(optarg, "io") == 0) { | |
533 | error = EIO; | |
534 | } else if (strcasecmp(optarg, "checksum") == 0) { | |
535 | error = ECKSUM; | |
536 | } else if (strcasecmp(optarg, "nxio") == 0) { | |
537 | error = ENXIO; | |
538 | } else { | |
539 | (void) fprintf(stderr, "invalid error type " | |
540 | "'%s': must be 'io', 'checksum' or " | |
541 | "'nxio'\n", optarg); | |
542 | usage(); | |
543 | return (1); | |
544 | } | |
545 | break; | |
546 | case 'f': | |
547 | record.zi_freq = atoi(optarg); | |
548 | if (record.zi_freq < 1 || record.zi_freq > 100) { | |
549 | (void) fprintf(stderr, "frequency range must " | |
550 | "be in the range (0, 100]\n"); | |
551 | return (1); | |
552 | } | |
553 | break; | |
9babb374 BB |
554 | case 'F': |
555 | record.zi_failfast = B_TRUE; | |
556 | break; | |
34dc7c2f BB |
557 | case 'h': |
558 | usage(); | |
559 | return (0); | |
560 | case 'l': | |
561 | level = (int)strtol(optarg, &end, 10); | |
562 | if (*end != '\0') { | |
563 | (void) fprintf(stderr, "invalid level '%s': " | |
564 | "must be an integer\n", optarg); | |
565 | usage(); | |
566 | return (1); | |
567 | } | |
568 | break; | |
569 | case 'm': | |
570 | domount = 1; | |
571 | break; | |
572 | case 'q': | |
573 | quiet = 1; | |
574 | break; | |
575 | case 'r': | |
576 | range = optarg; | |
577 | break; | |
578 | case 't': | |
b128c09f BB |
579 | if ((type = name_to_type(optarg)) == TYPE_INVAL && |
580 | !MOS_TYPE(type)) { | |
34dc7c2f BB |
581 | (void) fprintf(stderr, "invalid type '%s'\n", |
582 | optarg); | |
583 | usage(); | |
584 | return (1); | |
585 | } | |
586 | break; | |
587 | case 'u': | |
588 | flags |= ZINJECT_UNLOAD_SPA; | |
589 | break; | |
b128c09f BB |
590 | case 'L': |
591 | if ((label = name_to_type(optarg)) == TYPE_INVAL && | |
592 | !LABEL_TYPE(type)) { | |
593 | (void) fprintf(stderr, "invalid label type " | |
594 | "'%s'\n", optarg); | |
595 | usage(); | |
596 | return (1); | |
597 | } | |
598 | break; | |
34dc7c2f BB |
599 | case ':': |
600 | (void) fprintf(stderr, "option -%c requires an " | |
601 | "operand\n", optopt); | |
602 | usage(); | |
603 | return (1); | |
604 | case '?': | |
605 | (void) fprintf(stderr, "invalid option '%c'\n", | |
606 | optopt); | |
607 | usage(); | |
608 | return (2); | |
609 | } | |
610 | } | |
611 | ||
612 | argc -= optind; | |
613 | argv += optind; | |
614 | ||
615 | if (cancel != NULL) { | |
616 | /* | |
617 | * '-c' is invalid with any other options. | |
618 | */ | |
619 | if (raw != NULL || range != NULL || type != TYPE_INVAL || | |
620 | level != 0) { | |
621 | (void) fprintf(stderr, "cancel (-c) incompatible with " | |
622 | "any other options\n"); | |
623 | usage(); | |
624 | return (2); | |
625 | } | |
626 | if (argc != 0) { | |
627 | (void) fprintf(stderr, "extraneous argument to '-c'\n"); | |
628 | usage(); | |
629 | return (2); | |
630 | } | |
631 | ||
632 | if (strcmp(cancel, "all") == 0) { | |
633 | return (cancel_all_handlers()); | |
634 | } else { | |
635 | int id = (int)strtol(cancel, &end, 10); | |
636 | if (*end != '\0') { | |
637 | (void) fprintf(stderr, "invalid handle id '%s':" | |
638 | " must be an integer or 'all'\n", cancel); | |
639 | usage(); | |
640 | return (1); | |
641 | } | |
642 | return (cancel_handler(id)); | |
643 | } | |
644 | } | |
645 | ||
646 | if (device != NULL) { | |
647 | /* | |
648 | * Device (-d) injection uses a completely different mechanism | |
649 | * for doing injection, so handle it separately here. | |
650 | */ | |
651 | if (raw != NULL || range != NULL || type != TYPE_INVAL || | |
652 | level != 0) { | |
653 | (void) fprintf(stderr, "device (-d) incompatible with " | |
654 | "data error injection\n"); | |
655 | usage(); | |
656 | return (2); | |
657 | } | |
658 | ||
659 | if (argc != 1) { | |
660 | (void) fprintf(stderr, "device (-d) injection requires " | |
661 | "a single pool name\n"); | |
662 | usage(); | |
663 | return (2); | |
664 | } | |
665 | ||
666 | (void) strcpy(pool, argv[0]); | |
667 | dataset[0] = '\0'; | |
668 | ||
669 | if (error == ECKSUM) { | |
670 | (void) fprintf(stderr, "device error type must be " | |
671 | "'io' or 'nxio'\n"); | |
672 | return (1); | |
673 | } | |
674 | ||
b128c09f | 675 | if (translate_device(pool, device, label, &record) != 0) |
34dc7c2f BB |
676 | return (1); |
677 | if (!error) | |
678 | error = ENXIO; | |
679 | } else if (raw != NULL) { | |
680 | if (range != NULL || type != TYPE_INVAL || level != 0) { | |
681 | (void) fprintf(stderr, "raw (-b) format with " | |
682 | "any other options\n"); | |
683 | usage(); | |
684 | return (2); | |
685 | } | |
686 | ||
687 | if (argc != 1) { | |
688 | (void) fprintf(stderr, "raw (-b) format expects a " | |
689 | "single pool name\n"); | |
690 | usage(); | |
691 | return (2); | |
692 | } | |
693 | ||
694 | (void) strcpy(pool, argv[0]); | |
695 | dataset[0] = '\0'; | |
696 | ||
697 | if (error == ENXIO) { | |
698 | (void) fprintf(stderr, "data error type must be " | |
699 | "'checksum' or 'io'\n"); | |
700 | return (1); | |
701 | } | |
702 | ||
703 | if (translate_raw(raw, &record) != 0) | |
704 | return (1); | |
705 | if (!error) | |
706 | error = EIO; | |
707 | } else if (type == TYPE_INVAL) { | |
708 | if (flags == 0) { | |
709 | (void) fprintf(stderr, "at least one of '-b', '-d', " | |
710 | "'-t', '-a', or '-u' must be specified\n"); | |
711 | usage(); | |
712 | return (2); | |
713 | } | |
714 | ||
715 | if (argc == 1 && (flags & ZINJECT_UNLOAD_SPA)) { | |
716 | (void) strcpy(pool, argv[0]); | |
717 | dataset[0] = '\0'; | |
718 | } else if (argc != 0) { | |
719 | (void) fprintf(stderr, "extraneous argument for " | |
720 | "'-f'\n"); | |
721 | usage(); | |
722 | return (2); | |
723 | } | |
724 | ||
725 | flags |= ZINJECT_NULL; | |
726 | } else { | |
727 | if (argc != 1) { | |
728 | (void) fprintf(stderr, "missing object\n"); | |
729 | usage(); | |
730 | return (2); | |
731 | } | |
732 | ||
733 | if (error == ENXIO) { | |
734 | (void) fprintf(stderr, "data error type must be " | |
735 | "'checksum' or 'io'\n"); | |
736 | return (1); | |
737 | } | |
738 | ||
739 | if (translate_record(type, argv[0], range, level, &record, pool, | |
740 | dataset) != 0) | |
741 | return (1); | |
742 | if (!error) | |
743 | error = EIO; | |
744 | } | |
745 | ||
746 | /* | |
747 | * If this is pool-wide metadata, unmount everything. The ioctl() will | |
748 | * unload the pool, so that we trigger spa-wide reopen of metadata next | |
749 | * time we access the pool. | |
750 | */ | |
751 | if (dataset[0] != '\0' && domount) { | |
752 | if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_DATASET)) == NULL) | |
753 | return (1); | |
754 | ||
755 | if (zfs_unmount(zhp, NULL, 0) != 0) | |
756 | return (1); | |
757 | } | |
758 | ||
759 | record.zi_error = error; | |
760 | ||
761 | ret = register_handler(pool, flags, &record, quiet); | |
762 | ||
763 | if (dataset[0] != '\0' && domount) | |
764 | ret = (zfs_mount(zhp, NULL, 0) != 0); | |
765 | ||
766 | libzfs_fini(g_zfs); | |
767 | ||
768 | return (ret); | |
769 | } |