1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2000-2004 Poul-Henning Kamp <phk@FreeBSD.org>
5 * Copyright (c) 2012 The FreeBSD Foundation
6 * All rights reserved.
7 *
8 * Portions of this software were developed by Edward Tomasz Napierala
9 * under sponsorship from the FreeBSD Foundation.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #include <sys/param.h>
34 #include <sys/devicestat.h>
35 #include <sys/ioctl.h>
36 #include <sys/linker.h>
37 #include <sys/mdioctl.h>
38 #include <sys/module.h>
39 #include <sys/resource.h>
40 #include <sys/stat.h>
41
42 #include <assert.h>
43 #include <devstat.h>
44 #include <err.h>
45 #include <errno.h>
46 #include <fcntl.h>
47 #include <inttypes.h>
48 #include <libgeom.h>
49 #include <libutil.h>
50 #include <paths.h>
51 #include <stdarg.h>
52 #include <stdio.h>
53 #include <stdlib.h>
54 #include <string.h>
55 #include <unistd.h>
56
57 static struct md_ioctl mdio;
58 static enum {UNSET, ATTACH, DETACH, RESIZE, LIST} action = UNSET;
59 static int md_fd, nflag;
60
61 static void usage(void) __dead2;
62 static void md_set_file(const char *);
63 static int md_find(const char *, const char *);
64 static int md_query(const char *, const int, const char *);
65 static int md_list(const char *, int, const char *);
66 static char *geom_config_get(struct gconf *g, const char *name);
67 static void md_prthumanval(char *length);
68 static void print_options(const char *s, const char *);
69
70 #define OPT_VERBOSE 0x01
71 #define OPT_UNIT 0x02
72 #define OPT_DONE 0x04
73 #define OPT_LIST 0x10
74
75 #define CLASS_NAME_MD "MD"
76
77 static void
usage(void)78 usage(void)
79 {
80
81 fprintf(stderr,
82 "usage: mdconfig -a -t type [-n] [-o [no]option] ... [-f file]\n"
83 " [-s size] [-S sectorsize] [-u unit] [-L label]\n"
84 " [-x sectors/track] [-y heads/cylinder]\n"
85 " mdconfig -d -u unit [-o [no]force]\n"
86 " mdconfig -r -u unit -s size [-o [no]force]\n"
87 " mdconfig -l [-v] [-n] [-f file] [-u unit]\n"
88 " mdconfig file\n");
89 fprintf(stderr, "\t\ttype = {malloc, vnode, swap}\n");
90 fprintf(stderr, "\t\toption = {async, cache, compress,\n");
91 fprintf(stderr, "\t\t force, mustdealloc, readonly, ro,\n");
92 fprintf(stderr, "\t\t reserve, verify}\n");
93 fprintf(stderr, "\t\tsize = %%d (512 byte blocks), %%db (B),\n");
94 fprintf(stderr, "\t\t %%dk (kB), %%dm (MB), %%dg (GB),\n");
95 fprintf(stderr, "\t\t %%dt (TB), or %%dp (PB)\n");
96 exit(1);
97 }
98
99 int
main(int argc,char ** argv)100 main(int argc, char **argv)
101 {
102 int ch, i, vflag;
103 char *p;
104 char *fflag = NULL, *sflag = NULL, *tflag = NULL, *uflag = NULL;
105
106 bzero(&mdio, sizeof(mdio));
107 mdio.md_file = malloc(PATH_MAX);
108 mdio.md_label = malloc(PATH_MAX);
109 if (mdio.md_file == NULL || mdio.md_label == NULL)
110 err(1, "could not allocate memory");
111 vflag = 0;
112 bzero(mdio.md_file, PATH_MAX);
113 bzero(mdio.md_label, PATH_MAX);
114
115 if (argc == 1)
116 usage();
117
118 while ((ch = getopt(argc, argv, "ab:df:lno:rs:S:t:u:vx:y:L:")) != -1) {
119 switch (ch) {
120 case 'a':
121 if (action != UNSET && action != ATTACH)
122 errx(1, "-a is mutually exclusive "
123 "with -d, -r, and -l");
124 action = ATTACH;
125 break;
126 case 'd':
127 if (action != UNSET && action != DETACH)
128 errx(1, "-d is mutually exclusive "
129 "with -a, -r, and -l");
130 action = DETACH;
131 mdio.md_options |= MD_AUTOUNIT;
132 break;
133 case 'r':
134 if (action != UNSET && action != RESIZE)
135 errx(1, "-r is mutually exclusive "
136 "with -a, -d, and -l");
137 action = RESIZE;
138 mdio.md_options |= MD_AUTOUNIT;
139 break;
140 case 'l':
141 if (action != UNSET && action != LIST)
142 errx(1, "-l is mutually exclusive "
143 "with -a, -r, and -d");
144 action = LIST;
145 mdio.md_options |= MD_AUTOUNIT;
146 break;
147 case 'n':
148 nflag = 1;
149 break;
150 case 't':
151 if (tflag != NULL)
152 errx(1, "-t can be passed only once");
153 tflag = optarg;
154 if (!strcmp(optarg, "malloc")) {
155 mdio.md_type = MD_MALLOC;
156 mdio.md_options |= MD_AUTOUNIT | MD_COMPRESS;
157 } else if (!strcmp(optarg, "vnode")) {
158 mdio.md_type = MD_VNODE;
159 mdio.md_options |= MD_AUTOUNIT | MD_COMPRESS;
160 } else if (!strcmp(optarg, "swap")) {
161 mdio.md_type = MD_SWAP;
162 mdio.md_options |= MD_AUTOUNIT | MD_COMPRESS;
163 } else if (!strcmp(optarg, "null")) {
164 mdio.md_type = MD_NULL;
165 mdio.md_options |= MD_AUTOUNIT | MD_COMPRESS;
166 } else
167 errx(1, "unknown type: %s", optarg);
168 break;
169 case 'f':
170 if (fflag != NULL)
171 errx(1, "-f can be passed only once");
172 fflag = realpath(optarg, NULL);
173 if (fflag == NULL)
174 err(1, "realpath");
175 break;
176 case 'o':
177 if (!strcmp(optarg, "async"))
178 mdio.md_options |= MD_ASYNC;
179 else if (!strcmp(optarg, "noasync"))
180 mdio.md_options &= ~MD_ASYNC;
181 else if (!strcmp(optarg, "cache"))
182 mdio.md_options |= MD_CACHE;
183 else if (!strcmp(optarg, "nocache"))
184 mdio.md_options &= ~MD_CACHE;
185 /*
186 * For backwards-compatibility, continue to recognize
187 * "cluster"
188 */
189 else if (!strcmp(optarg, "cluster") ||
190 !strcmp(optarg, "nocluster"))
191 {
192 warnx("Option cluster is ignored");
193 }
194 else if (!strcmp(optarg, "compress"))
195 mdio.md_options |= MD_COMPRESS;
196 else if (!strcmp(optarg, "nocompress"))
197 mdio.md_options &= ~MD_COMPRESS;
198 else if (!strcmp(optarg, "force"))
199 mdio.md_options |= MD_FORCE;
200 else if (!strcmp(optarg, "noforce"))
201 mdio.md_options &= ~MD_FORCE;
202 else if (!strcmp(optarg, "mustdealloc"))
203 mdio.md_options |= MD_MUSTDEALLOC;
204 else if (!strcmp(optarg, "nomustdealloc"))
205 mdio.md_options &= ~MD_MUSTDEALLOC;
206 else if (!strcmp(optarg, "readonly"))
207 mdio.md_options |= MD_READONLY;
208 else if (!strcmp(optarg, "noreadonly"))
209 mdio.md_options &= ~MD_READONLY;
210 else if (!strcmp(optarg, "ro"))
211 mdio.md_options |= MD_READONLY;
212 else if (!strcmp(optarg, "noro"))
213 mdio.md_options &= ~MD_READONLY;
214 else if (!strcmp(optarg, "reserve"))
215 mdio.md_options |= MD_RESERVE;
216 else if (!strcmp(optarg, "noreserve"))
217 mdio.md_options &= ~MD_RESERVE;
218 else if (!strcmp(optarg, "verify"))
219 mdio.md_options |= MD_VERIFY;
220 else if (!strcmp(optarg, "noverify"))
221 mdio.md_options &= ~MD_VERIFY;
222 else
223 errx(1, "unknown option: %s", optarg);
224 break;
225 case 'S':
226 mdio.md_sectorsize = strtoul(optarg, &p, 0);
227 break;
228 case 's':
229 if (sflag != NULL)
230 errx(1, "-s can be passed only once");
231 sflag = optarg;
232 mdio.md_mediasize = (off_t)strtoumax(optarg, &p, 0);
233 if (p == NULL || *p == '\0')
234 mdio.md_mediasize *= DEV_BSIZE;
235 else if (*p == 'b' || *p == 'B')
236 ; /* do nothing */
237 else if (*p == 'k' || *p == 'K')
238 mdio.md_mediasize <<= 10;
239 else if (*p == 'm' || *p == 'M')
240 mdio.md_mediasize <<= 20;
241 else if (*p == 'g' || *p == 'G')
242 mdio.md_mediasize <<= 30;
243 else if (*p == 't' || *p == 'T') {
244 mdio.md_mediasize <<= 30;
245 mdio.md_mediasize <<= 10;
246 } else if (*p == 'p' || *p == 'P') {
247 mdio.md_mediasize <<= 30;
248 mdio.md_mediasize <<= 20;
249 } else
250 errx(1, "unknown suffix on -s argument");
251 break;
252 case 'u':
253 if (!strncmp(optarg, _PATH_DEV, sizeof(_PATH_DEV) - 1))
254 optarg += sizeof(_PATH_DEV) - 1;
255 if (!strncmp(optarg, MD_NAME, sizeof(MD_NAME) - 1))
256 optarg += sizeof(MD_NAME) - 1;
257 uflag = optarg;
258 break;
259 case 'v':
260 vflag = OPT_VERBOSE;
261 break;
262 case 'x':
263 mdio.md_fwsectors = strtoul(optarg, &p, 0);
264 break;
265 case 'y':
266 mdio.md_fwheads = strtoul(optarg, &p, 0);
267 break;
268 case 'L':
269 strlcpy(mdio.md_label, optarg, PATH_MAX);
270 break;
271 default:
272 usage();
273 }
274 }
275
276 argc -= optind;
277 argv += optind;
278
279 if (action == UNSET)
280 action = ATTACH;
281
282 if (action == ATTACH) {
283 if (tflag == NULL) {
284 /*
285 * Try to infer the type based on other arguments.
286 */
287 if (fflag != NULL || argc > 0) {
288 /* Imply ``-t vnode'' */
289 mdio.md_type = MD_VNODE;
290 mdio.md_options |= MD_AUTOUNIT | MD_COMPRESS;
291 } else if (sflag != NULL) {
292 /* Imply ``-t swap'' */
293 mdio.md_type = MD_SWAP;
294 mdio.md_options |= MD_AUTOUNIT | MD_COMPRESS;
295 } else
296 errx(1, "unable to determine type");
297 }
298
299 if ((fflag != NULL || argc > 0) && mdio.md_type != MD_VNODE)
300 errx(1, "only -t vnode can be used with file name");
301
302 if (mdio.md_type == MD_VNODE) {
303 if (fflag != NULL) {
304 if (argc != 0)
305 usage();
306 md_set_file(fflag);
307 } else {
308 if (argc != 1)
309 usage();
310 md_set_file(*argv);
311 }
312
313 if ((mdio.md_options & MD_READONLY) == 0 &&
314 access(mdio.md_file, W_OK) < 0 &&
315 (errno == EACCES || errno == EPERM ||
316 errno == EROFS)) {
317 warnx("WARNING: opening backing store: %s "
318 "readonly", mdio.md_file);
319 mdio.md_options |= MD_READONLY;
320 }
321 }
322
323 if ((mdio.md_type == MD_MALLOC || mdio.md_type == MD_SWAP ||
324 mdio.md_type == MD_NULL) && sflag == NULL)
325 errx(1, "must specify -s for -t malloc, -t swap, "
326 "or -t null");
327 if (mdio.md_type == MD_VNODE && mdio.md_file[0] == '\0')
328 errx(1, "must specify -f for -t vnode");
329 } else {
330 if (mdio.md_sectorsize != 0)
331 errx(1, "-S can only be used with -a");
332 if (action != RESIZE && sflag != NULL)
333 errx(1, "-s can only be used with -a and -r");
334 if (mdio.md_fwsectors != 0)
335 errx(1, "-x can only be used with -a");
336 if (mdio.md_fwheads != 0)
337 errx(1, "-y can only be used with -a");
338 if (fflag != NULL && action != LIST)
339 errx(1, "-f can only be used with -a and -l");
340 if (tflag != NULL)
341 errx(1, "-t can only be used with -a");
342 if (argc > 0)
343 errx(1, "file can only be used with -a");
344 if ((action != DETACH && action != RESIZE) &&
345 (mdio.md_options & ~MD_AUTOUNIT) != 0)
346 errx(1, "-o can only be used with -a, -d, and -r");
347 if (action == DETACH &&
348 (mdio.md_options & ~(MD_FORCE | MD_AUTOUNIT)) != 0)
349 errx(1, "only -o [no]force can be used with -d");
350 if (action == RESIZE &&
351 (mdio.md_options & ~(MD_FORCE | MD_RESERVE | MD_AUTOUNIT)) != 0)
352 errx(1, "only -o [no]force and -o [no]reserve can be used with -r");
353 }
354
355 if (action == RESIZE && sflag == NULL)
356 errx(1, "must specify -s for -r");
357
358 if (action != LIST && vflag == OPT_VERBOSE)
359 errx(1, "-v can only be used with -l");
360
361 if (uflag != NULL) {
362 mdio.md_unit = strtoul(uflag, &p, 0);
363 if (mdio.md_unit == (unsigned)ULONG_MAX || *p != '\0')
364 errx(1, "bad unit: %s", uflag);
365 mdio.md_options &= ~MD_AUTOUNIT;
366 }
367
368 mdio.md_version = MDIOVERSION;
369
370 if (!kld_isloaded("g_md") && kld_load("geom_md") == -1)
371 err(1, "failed to load geom_md module");
372
373 md_fd = open(_PATH_DEV MDCTL_NAME, O_RDWR, 0);
374 if (md_fd < 0)
375 err(1, "open(%s%s)", _PATH_DEV, MDCTL_NAME);
376
377 if (action == ATTACH) {
378 i = ioctl(md_fd, MDIOCATTACH, &mdio);
379 if (i < 0)
380 err(1, "ioctl(%s%s)", _PATH_DEV, MDCTL_NAME);
381 if (mdio.md_options & MD_AUTOUNIT)
382 printf("%s%d\n", nflag ? "" : MD_NAME, mdio.md_unit);
383 } else if (action == DETACH) {
384 if (mdio.md_options & MD_AUTOUNIT)
385 errx(1, "-d requires -u");
386 i = ioctl(md_fd, MDIOCDETACH, &mdio);
387 if (i < 0)
388 err(1, "ioctl(%s%s)", _PATH_DEV, MDCTL_NAME);
389 } else if (action == RESIZE) {
390 if (mdio.md_options & MD_AUTOUNIT)
391 errx(1, "-r requires -u");
392 i = ioctl(md_fd, MDIOCRESIZE, &mdio);
393 if (i < 0)
394 err(1, "ioctl(%s%s)", _PATH_DEV, MDCTL_NAME);
395 } else if (action == LIST) {
396 if (mdio.md_options & MD_AUTOUNIT) {
397 /*
398 * Listing all devices. This is why we pass NULL
399 * together with OPT_LIST.
400 */
401 return (md_list(NULL, OPT_LIST | vflag, fflag));
402 } else
403 return (md_query(uflag, vflag, fflag));
404 } else
405 usage();
406 close(md_fd);
407 return (0);
408 }
409
410 static void
print_options(const char * dev,const char * file)411 print_options(const char *dev, const char *file)
412 {
413 struct md_ioctl mdiox;
414 int unit;
415 const char *sep = "";
416
417 if (sscanf(dev, "md%d", &unit) != 1)
418 err(1, "invalid device: %s", dev);
419
420 memset(&mdiox, 0, sizeof(mdiox));
421 mdiox.md_version = MDIOVERSION;
422 mdiox.md_unit = unit;
423 mdiox.md_file = file[0] == '-' ? NULL : strdup(file);
424
425 if (ioctl(md_fd, MDIOCQUERY, &mdiox) < 0)
426 err(1, "ioctl(%s%s)", _PATH_DEV, MDCTL_NAME);
427
428 if (mdiox.md_file != NULL)
429 free(mdiox.md_file);
430
431 printf("\t");
432 if (mdiox.md_options & MD_ASYNC) {
433 printf("%sasync", sep);
434 sep = ",";
435 }
436 if (mdiox.md_options & MD_CACHE) {
437 printf("%scache", sep);
438 sep = ",";
439 }
440 if (mdiox.md_options & MD_COMPRESS) {
441 printf("%scompress", sep);
442 sep = ",";
443 }
444 if (mdiox.md_options & MD_FORCE) {
445 printf("%sforce", sep);
446 sep = ",";
447 }
448 if (mdiox.md_options & MD_READONLY) {
449 printf("%sreadonly", sep);
450 sep = ",";
451 }
452 if (mdiox.md_options & MD_RESERVE) {
453 printf("%sreserve", sep);
454 sep = ",";
455 }
456 if (mdiox.md_options & MD_VERIFY) {
457 printf("%sverify", sep);
458 sep = ",";
459 }
460 if (mdiox.md_options & MD_MUSTDEALLOC) {
461 printf("%smustdealloc", sep);
462 sep = ",";
463 }
464 }
465
466 static void
md_set_file(const char * fn)467 md_set_file(const char *fn)
468 {
469 struct stat sb;
470 int fd;
471
472 if (realpath(fn, mdio.md_file) == NULL)
473 err(1, "could not find full path for %s", fn);
474 fd = open(mdio.md_file, O_RDONLY);
475 if (fd < 0)
476 err(1, "could not open %s", fn);
477 if (fstat(fd, &sb) == -1)
478 err(1, "could not stat %s", fn);
479 if (!S_ISREG(sb.st_mode))
480 errx(1, "%s is not a regular file", fn);
481 if (mdio.md_mediasize == 0)
482 mdio.md_mediasize = sb.st_size;
483 close(fd);
484 }
485
486 /*
487 * Lists md(4) disks. Is used also as a query routine, since it handles XML
488 * interface. 'units' can be NULL for listing memory disks. It might be
489 * comma-separated string containing md(4) disk names. 'opt' distinguished
490 * between list and query mode.
491 */
492 static int
md_list(const char * units,int opt,const char * fflag)493 md_list(const char *units, int opt, const char *fflag)
494 {
495 struct gmesh gm;
496 struct gprovider *pp;
497 struct gconf *gc;
498 struct gident *gid;
499 struct devstat *gsp;
500 struct ggeom *gg;
501 struct gclass *gcl;
502 void *sq;
503 int retcode, ffound, ufound;
504 char *length;
505 const char *type, *file, *label;
506
507 type = file = length = NULL;
508
509 retcode = geom_gettree(&gm);
510 if (retcode != 0)
511 return (-1);
512 retcode = geom_stats_open();
513 if (retcode != 0)
514 return (-1);
515 sq = geom_stats_snapshot_get();
516 if (sq == NULL)
517 return (-1);
518
519 ffound = ufound = 0;
520 while ((gsp = geom_stats_snapshot_next(sq)) != NULL) {
521 gid = geom_lookupid(&gm, gsp->id);
522 if (gid == NULL)
523 continue;
524 if (gid->lg_what == ISPROVIDER) {
525 pp = gid->lg_ptr;
526 gg = pp->lg_geom;
527 gcl = gg->lg_class;
528 if (strcmp(gcl->lg_name, CLASS_NAME_MD) != 0)
529 continue;
530 if ((opt & OPT_UNIT) && (units != NULL)) {
531 retcode = md_find(units, pp->lg_name);
532 if (retcode != 1)
533 continue;
534 else
535 ufound = 1;
536 }
537 gc = &pp->lg_config;
538 type = geom_config_get(gc, "type");
539 if (type != NULL && (strcmp(type, "vnode") == 0 ||
540 strcmp(type, "preload") == 0)) {
541 file = geom_config_get(gc, "file");
542 if (fflag != NULL &&
543 strcmp(fflag, file) != 0)
544 continue;
545 else
546 ffound = 1;
547 } else if (fflag != NULL)
548 continue;
549 if (nflag && strncmp(pp->lg_name, MD_NAME, 2) == 0)
550 printf("%s", pp->lg_name + 2);
551 else
552 printf("%s", pp->lg_name);
553
554 if (opt & OPT_VERBOSE ||
555 ((opt & OPT_UNIT) && fflag == NULL)) {
556 length = geom_config_get(gc, "length");
557 printf("\t%s\t", type);
558 if (length != NULL)
559 md_prthumanval(length);
560 if (file == NULL)
561 file = "-";
562 printf("\t%s", file);
563 label = geom_config_get(gc, "label");
564 if (label == NULL)
565 label = "-";
566 printf("\t%s", label);
567 print_options(pp->lg_name, file);
568 file = label = NULL;
569 }
570 opt |= OPT_DONE;
571 if ((opt & OPT_LIST) && !(opt & OPT_VERBOSE))
572 printf(" ");
573 else
574 printf("\n");
575 }
576 }
577 if ((opt & OPT_LIST) && (opt & OPT_DONE) && !(opt & OPT_VERBOSE))
578 printf("\n");
579 /* XXX: Check if it's enough to clean everything. */
580 geom_stats_snapshot_free(sq);
581 if (opt & OPT_UNIT) {
582 if (((fflag == NULL) && ufound) ||
583 ((fflag == NULL) && (units != NULL) && ufound) ||
584 ((fflag != NULL) && ffound) ||
585 ((fflag != NULL) && (units != NULL) && ufound && ffound))
586 return (0);
587 } else if (opt & OPT_LIST) {
588 if ((fflag == NULL) ||
589 ((fflag != NULL) && ffound))
590 return (0);
591 }
592 return (-1);
593 }
594
595 /*
596 * Returns value of 'name' from gconfig structure.
597 */
598 static char *
geom_config_get(struct gconf * g,const char * name)599 geom_config_get(struct gconf *g, const char *name)
600 {
601 struct gconfig *gce;
602
603 LIST_FOREACH(gce, g, lg_config) {
604 if (strcmp(gce->lg_name, name) == 0)
605 return (gce->lg_val);
606 }
607 return (NULL);
608 }
609
610 /*
611 * List is comma separated list of MD disks. name is a
612 * device name we look for. Returns 1 if found and 0
613 * otherwise.
614 */
615 static int
md_find(const char * list,const char * name)616 md_find(const char *list, const char *name)
617 {
618 int ret;
619 char num[PATH_MAX];
620 char *ptr, *p, *u;
621
622 ret = 0;
623 ptr = strdup(list);
624 if (ptr == NULL)
625 return (-1);
626 for (p = ptr; (u = strsep(&p, ",")) != NULL;) {
627 if (strncmp(u, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
628 u += sizeof(_PATH_DEV) - 1;
629 /* Just in case user specified number instead of full name */
630 snprintf(num, sizeof(num), "%s%s", MD_NAME, u);
631 if (strcmp(u, name) == 0 || strcmp(num, name) == 0) {
632 ret = 1;
633 break;
634 }
635 }
636 free(ptr);
637 return (ret);
638 }
639
640 static void
md_prthumanval(char * length)641 md_prthumanval(char *length)
642 {
643 char buf[6];
644 uintmax_t bytes;
645 char *endptr;
646
647 errno = 0;
648 bytes = strtoumax(length, &endptr, 10);
649 if (errno != 0 || *endptr != '\0' || bytes > INT64_MAX)
650 return;
651 humanize_number(buf, sizeof(buf), (int64_t)bytes, "",
652 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL);
653 (void)printf("%6s", buf);
654 }
655
656 static int
md_query(const char * name,const int opt,const char * fflag)657 md_query(const char *name, const int opt, const char *fflag)
658 {
659
660 return (md_list(name, opt | OPT_UNIT, fflag));
661 }
662