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Commit | Line | Data |
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2a4c734b | 1 | /* |
f77fa578 | 2 | * lsblk(8) - list block devices |
2a4c734b | 3 | * |
270e66ec | 4 | * Copyright (C) 2010,2011 Red Hat, Inc. All rights reserved. |
2a4c734b MB |
5 | * Written by Milan Broz <mbroz@redhat.com> |
6 | * Karel Zak <kzak@redhat.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it would be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
7cebf0bb SK |
18 | * You should have received a copy of the GNU General Public License along |
19 | * with this program; if not, write to the Free Software Foundation, Inc., | |
20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
2a4c734b MB |
21 | */ |
22 | ||
23 | #include <stdio.h> | |
24 | #include <errno.h> | |
25 | #include <getopt.h> | |
2a4c734b MB |
26 | #include <stdlib.h> |
27 | #include <unistd.h> | |
28 | #include <stdint.h> | |
29 | #include <sys/types.h> | |
30 | #include <sys/stat.h> | |
31 | #include <dirent.h> | |
32 | #include <fcntl.h> | |
33 | #include <string.h> | |
2a4c734b MB |
34 | #include <sys/ioctl.h> |
35 | #include <inttypes.h> | |
36 | #include <stdarg.h> | |
37 | #include <locale.h> | |
38 | #include <pwd.h> | |
39 | #include <grp.h> | |
18eac5ba | 40 | #include <ctype.h> |
2a4c734b MB |
41 | |
42 | #include <blkid.h> | |
43 | ||
f17f5f48 IM |
44 | #ifdef HAVE_LIBUDEV |
45 | #include <libudev.h> | |
46 | #endif | |
47 | ||
2a4c734b MB |
48 | #include <assert.h> |
49 | ||
50 | #include "pathnames.h" | |
51 | #include "blkdev.h" | |
52 | #include "canonicalize.h" | |
53 | #include "ismounted.h" | |
54 | #include "nls.h" | |
55 | #include "tt.h" | |
56 | #include "xalloc.h" | |
57 | #include "strutils.h" | |
eb76ca98 | 58 | #include "c.h" |
766ab9b0 | 59 | #include "sysfs.h" |
2a4c734b MB |
60 | |
61 | /* column IDs */ | |
62 | enum { | |
63 | COL_NAME = 0, | |
64 | COL_KNAME, | |
65 | COL_MAJMIN, | |
66 | COL_FSTYPE, | |
67 | COL_TARGET, | |
68 | COL_LABEL, | |
69 | COL_UUID, | |
70 | COL_RO, | |
627970a7 | 71 | COL_RM, |
2a4c734b MB |
72 | COL_MODEL, |
73 | COL_SIZE, | |
01e487c0 | 74 | COL_STATE, |
2a4c734b MB |
75 | COL_OWNER, |
76 | COL_GROUP, | |
77 | COL_MODE, | |
78 | COL_ALIOFF, | |
79 | COL_MINIO, | |
80 | COL_OPTIO, | |
81 | COL_PHYSEC, | |
82 | COL_LOGSEC, | |
83 | COL_ROTA, | |
84 | COL_SCHED, | |
64c9e22a | 85 | COL_RQ_SIZE, |
18eac5ba | 86 | COL_TYPE, |
2d232246 MP |
87 | COL_DALIGN, |
88 | COL_DGRAN, | |
89 | COL_DMAX, | |
90 | COL_DZERO, | |
2a4c734b MB |
91 | }; |
92 | ||
93 | /* column names */ | |
94 | struct colinfo { | |
95 | const char *name; /* header */ | |
96 | double whint; /* width hint (N < 1 is in percent of termwidth) */ | |
97 | int flags; /* TT_FL_* */ | |
98 | const char *help; | |
99 | }; | |
100 | ||
101 | /* columns descriptions */ | |
507d39c2 | 102 | static struct colinfo infos[] = { |
7aa69cf2 | 103 | [COL_NAME] = { "NAME", 0.25, TT_FL_TREE | TT_FL_NOEXTREMES, N_("device name") }, |
e22d8b95 | 104 | [COL_KNAME] = { "KNAME", 0.3, 0, N_("internal kernel device name") }, |
2a4c734b MB |
105 | [COL_MAJMIN] = { "MAJ:MIN", 6, 0, N_("major:minor device number") }, |
106 | [COL_FSTYPE] = { "FSTYPE", 0.1, TT_FL_TRUNC, N_("filesystem type") }, | |
107 | [COL_TARGET] = { "MOUNTPOINT", 0.10, TT_FL_TRUNC, N_("where the device is mounted") }, | |
108 | [COL_LABEL] = { "LABEL", 0.1, 0, N_("filesystem LABEL") }, | |
109 | [COL_UUID] = { "UUID", 36, 0, N_("filesystem UUID") }, | |
110 | [COL_RO] = { "RO", 1, TT_FL_RIGHT, N_("read-only device") }, | |
627970a7 | 111 | [COL_RM] = { "RM", 1, TT_FL_RIGHT, N_("removable device") }, |
2a4c734b MB |
112 | [COL_ROTA] = { "ROTA", 1, TT_FL_RIGHT, N_("rotational device") }, |
113 | [COL_MODEL] = { "MODEL", 0.1, TT_FL_TRUNC, N_("device identifier") }, | |
114 | [COL_SIZE] = { "SIZE", 6, TT_FL_RIGHT, N_("size of the device") }, | |
01e487c0 | 115 | [COL_STATE] = { "STATE", 7, TT_FL_TRUNC, N_("state of the device") }, |
2a4c734b MB |
116 | [COL_OWNER] = { "OWNER", 0.1, TT_FL_TRUNC, N_("user name"), }, |
117 | [COL_GROUP] = { "GROUP", 0.1, TT_FL_TRUNC, N_("group name") }, | |
118 | [COL_MODE] = { "MODE", 10, 0, N_("device node permissions") }, | |
119 | [COL_ALIOFF] = { "ALIGNMENT", 6, TT_FL_RIGHT, N_("alignment offset") }, | |
120 | [COL_MINIO] = { "MIN-IO", 6, TT_FL_RIGHT, N_("minimum I/O size") }, | |
121 | [COL_OPTIO] = { "OPT-IO", 6, TT_FL_RIGHT, N_("optimal I/O size") }, | |
122 | [COL_PHYSEC] = { "PHY-SEC", 7, TT_FL_RIGHT, N_("physical sector size") }, | |
123 | [COL_LOGSEC] = { "LOG-SEC", 7, TT_FL_RIGHT, N_("logical sector size") }, | |
18eac5ba | 124 | [COL_SCHED] = { "SCHED", 0.1, 0, N_("I/O scheduler name") }, |
64c9e22a | 125 | [COL_RQ_SIZE]= { "RQ-SIZE", 5, TT_FL_RIGHT, N_("request queue size") }, |
2d232246 MP |
126 | [COL_TYPE] = { "TYPE", 4, 0, N_("device type") }, |
127 | [COL_DALIGN] = { "DISC-ALN", 6, TT_FL_RIGHT, N_("discard alignment offset") }, | |
128 | [COL_DGRAN] = { "DISC-GRAN", 6, TT_FL_RIGHT, N_("discard granularity") }, | |
129 | [COL_DMAX] = { "DISC-MAX", 6, TT_FL_RIGHT, N_("discard max bytes") }, | |
130 | [COL_DZERO] = { "DISC-ZERO", 1, TT_FL_RIGHT, N_("discard zeroes data") }, | |
2a4c734b MB |
131 | }; |
132 | ||
133 | struct lsblk { | |
9feec79c KZ |
134 | struct tt *tt; /* output table */ |
135 | unsigned int all_devices:1; /* print all devices */ | |
136 | unsigned int bytes:1; /* print SIZE in bytes */ | |
09a71aa1 | 137 | unsigned int inverse:1; /* print inverse dependencies */ |
9feec79c | 138 | unsigned int nodeps:1; /* don't print slaves/holders */ |
2a4c734b MB |
139 | }; |
140 | ||
141 | struct lsblk *lsblk; /* global handler */ | |
507d39c2 DB |
142 | |
143 | #define NCOLS ARRAY_SIZE(infos) | |
144 | int columns[NCOLS];/* enabled columns */ | |
2a4c734b MB |
145 | int ncolumns; /* number of enabled columns */ |
146 | ||
6aace32f KZ |
147 | int excludes[256]; |
148 | size_t nexcludes; | |
2a4c734b MB |
149 | |
150 | struct blkdev_cxt { | |
151 | struct blkdev_cxt *parent; | |
152 | ||
153 | struct tt_line *tt_line; | |
154 | struct stat st; | |
155 | ||
156 | char *name; /* kernel name in /sys/block */ | |
157 | char *dm_name; /* DM name (dm/block) */ | |
158 | ||
159 | char *filename; /* path to device node */ | |
766ab9b0 KZ |
160 | |
161 | struct sysfs_cxt sysfs; | |
2a4c734b MB |
162 | |
163 | int partition; /* is partition? TRUE/FALSE */ | |
164 | ||
165 | int probed; /* already probed */ | |
166 | char *fstype; /* detected fs, NULL or "?" if cannot detect */ | |
167 | char *uuid; /* UUID of device / filesystem */ | |
168 | char *label; /* FS label */ | |
169 | ||
09a71aa1 | 170 | int npartitions; /* # of partitions this device has */ |
2a4c734b | 171 | int nholders; /* # of devices mapped directly to this device |
09a71aa1 | 172 | * /sys/block/.../holders */ |
2a4c734b MB |
173 | int nslaves; /* # of devices this device maps to */ |
174 | int maj, min; /* devno */ | |
98055888 | 175 | int discard; /* supports discard */ |
2a4c734b MB |
176 | |
177 | uint64_t size; /* device size */ | |
178 | }; | |
179 | ||
180 | static int is_maj_excluded(int maj) | |
181 | { | |
6aace32f | 182 | size_t i; |
2a4c734b MB |
183 | |
184 | assert(ARRAY_SIZE(excludes) > nexcludes); | |
185 | ||
186 | for (i = 0; i < nexcludes; i++) | |
187 | if (excludes[i] == maj) | |
188 | return 1; | |
189 | return 0; | |
190 | } | |
191 | ||
2a4c734b MB |
192 | /* array with IDs of enabled columns */ |
193 | static int get_column_id(int num) | |
194 | { | |
507d39c2 | 195 | assert(ARRAY_SIZE(columns) == NCOLS); |
2a4c734b | 196 | assert(num < ncolumns); |
507d39c2 | 197 | assert(columns[num] < (int) NCOLS); |
2a4c734b MB |
198 | return columns[num]; |
199 | } | |
200 | ||
201 | static struct colinfo *get_column_info(int num) | |
202 | { | |
203 | return &infos[ get_column_id(num) ]; | |
204 | } | |
205 | ||
2a4c734b MB |
206 | static int column_name_to_id(const char *name, size_t namesz) |
207 | { | |
507d39c2 | 208 | size_t i; |
2a4c734b | 209 | |
507d39c2 | 210 | for (i = 0; i < NCOLS; i++) { |
2a4c734b MB |
211 | const char *cn = infos[i].name; |
212 | ||
213 | if (!strncasecmp(name, cn, namesz) && !*(cn + namesz)) | |
214 | return i; | |
215 | } | |
216 | warnx(_("unknown column: %s"), name); | |
217 | return -1; | |
218 | } | |
219 | ||
220 | static void reset_blkdev_cxt(struct blkdev_cxt *cxt) | |
221 | { | |
222 | if (!cxt) | |
223 | return; | |
224 | free(cxt->name); | |
225 | free(cxt->dm_name); | |
226 | free(cxt->filename); | |
227 | free(cxt->fstype); | |
228 | free(cxt->uuid); | |
229 | free(cxt->label); | |
230 | ||
766ab9b0 | 231 | sysfs_deinit(&cxt->sysfs); |
2a4c734b MB |
232 | |
233 | memset(cxt, 0, sizeof(*cxt)); | |
234 | } | |
235 | ||
236 | static int is_dm(const char *name) | |
237 | { | |
238 | return strncmp(name, "dm-", 3) ? 0 : 1; | |
239 | } | |
240 | ||
241 | static struct dirent *xreaddir(DIR *dp) | |
242 | { | |
243 | struct dirent *d; | |
244 | ||
245 | assert(dp); | |
246 | ||
247 | while ((d = readdir(dp))) { | |
248 | if (!strcmp(d->d_name, ".") || | |
249 | !strcmp(d->d_name, "..")) | |
250 | continue; | |
251 | ||
252 | /* blacklist here? */ | |
253 | break; | |
254 | } | |
255 | return d; | |
256 | } | |
257 | ||
2a4c734b MB |
258 | static char *get_device_path(struct blkdev_cxt *cxt) |
259 | { | |
260 | char path[PATH_MAX]; | |
261 | ||
262 | assert(cxt); | |
263 | assert(cxt->name); | |
264 | ||
265 | if (is_dm(cxt->name)) | |
266 | return canonicalize_dm_name(cxt->name); | |
267 | ||
268 | snprintf(path, sizeof(path), "/dev/%s", cxt->name); | |
269 | return xstrdup(path); | |
270 | } | |
271 | ||
2a4c734b MB |
272 | static char *get_device_mountpoint(struct blkdev_cxt *cxt) |
273 | { | |
274 | int fl = 0; | |
275 | char mnt[PATH_MAX]; | |
276 | ||
270e66ec MB |
277 | assert(cxt); |
278 | assert(cxt->filename); | |
279 | ||
2a4c734b MB |
280 | *mnt = '\0'; |
281 | ||
282 | /* | |
283 | * TODO: use libmount and parse /proc/mountinfo only once | |
284 | */ | |
285 | if (check_mount_point(cxt->filename, &fl, mnt, sizeof(mnt)) == 0 && | |
286 | (fl & MF_MOUNTED)) { | |
287 | if (fl & MF_SWAP) | |
288 | strcpy(mnt, "[SWAP]"); | |
289 | } | |
290 | return strlen(mnt) ? xstrdup(mnt) : NULL; | |
291 | } | |
292 | ||
f17f5f48 IM |
293 | #ifndef HAVE_LIBUDEV |
294 | static int probe_device_by_udev(struct blkdev_cxt *cxt | |
295 | __attribute__((__unused__))) | |
296 | { | |
297 | return -1; | |
298 | } | |
299 | #else | |
300 | static int probe_device_by_udev(struct blkdev_cxt *cxt) | |
301 | { | |
302 | struct udev *udev; | |
303 | struct udev_device *dev; | |
304 | ||
305 | udev = udev_new(); | |
306 | if (!udev) | |
307 | return -1; | |
308 | ||
309 | dev = udev_device_new_from_subsystem_sysname(udev, "block", cxt->name); | |
310 | if (dev) { | |
311 | const char *data; | |
312 | ||
313 | if ((data = udev_device_get_property_value(dev, "ID_FS_LABEL"))) | |
314 | cxt->label = xstrdup(data); | |
315 | if ((data = udev_device_get_property_value(dev, "ID_FS_TYPE"))) | |
316 | cxt->fstype = xstrdup(data); | |
317 | if ((data = udev_device_get_property_value(dev, "ID_FS_UUID"))) | |
318 | cxt->uuid = xstrdup(data); | |
319 | ||
320 | udev_device_unref(dev); | |
321 | } | |
322 | ||
323 | udev_unref(udev); | |
324 | return 0; | |
325 | } | |
326 | #endif /* HAVE_LIBUDEV */ | |
327 | ||
2a4c734b MB |
328 | static void probe_device(struct blkdev_cxt *cxt) |
329 | { | |
2a4c734b MB |
330 | blkid_probe pr = NULL; |
331 | ||
332 | if (cxt->probed) | |
333 | return; | |
f17f5f48 | 334 | |
2a4c734b MB |
335 | cxt->probed = 1; |
336 | ||
337 | if (!cxt->size) | |
338 | return; | |
339 | ||
f17f5f48 IM |
340 | /* try udev DB */ |
341 | if (probe_device_by_udev(cxt) == 0) | |
342 | return; /* success */ | |
343 | ||
344 | /* try libblkid */ | |
2a4c734b MB |
345 | pr = blkid_new_probe_from_filename(cxt->filename); |
346 | if (!pr) | |
347 | return; | |
348 | ||
349 | /* TODO: we have to enable partitions probing to avoid conflicts | |
350 | * between raids and PT -- see blkid(8) code for more details | |
351 | */ | |
352 | blkid_probe_enable_superblocks(pr, 1); | |
353 | blkid_probe_set_superblocks_flags(pr, BLKID_SUBLKS_LABEL | | |
354 | BLKID_SUBLKS_UUID | | |
355 | BLKID_SUBLKS_TYPE); | |
356 | if (!blkid_do_safeprobe(pr)) { | |
357 | const char *data = NULL; | |
358 | ||
359 | if (!blkid_probe_lookup_value(pr, "TYPE", &data, NULL)) | |
360 | cxt->fstype = xstrdup(data); | |
361 | if (!blkid_probe_lookup_value(pr, "UUID", &data, NULL)) | |
362 | cxt->uuid = xstrdup(data); | |
363 | if (!blkid_probe_lookup_value(pr, "LABEL", &data, NULL)) | |
364 | cxt->label = xstrdup(data); | |
365 | } | |
366 | ||
2a4c734b MB |
367 | blkid_free_probe(pr); |
368 | return; | |
369 | } | |
370 | ||
371 | static int is_readonly_device(struct blkdev_cxt *cxt) | |
372 | { | |
373 | int fd, ro = 0; | |
374 | ||
766ab9b0 | 375 | if (sysfs_scanf(&cxt->sysfs, "ro", "%d", &ro) == 0) |
2a4c734b MB |
376 | return ro; |
377 | ||
378 | /* fallback if "ro" attribute does not exist */ | |
379 | fd = open(cxt->filename, O_RDONLY); | |
380 | if (fd != -1) { | |
381 | ioctl(fd, BLKROGET, &ro); | |
382 | close(fd); | |
383 | } | |
384 | return ro; | |
385 | } | |
386 | ||
387 | static char *get_scheduler(struct blkdev_cxt *cxt) | |
388 | { | |
766ab9b0 | 389 | char *str = sysfs_strdup(&cxt->sysfs, "queue/scheduler"); |
2a4c734b MB |
390 | char *p, *res = NULL; |
391 | ||
392 | if (!str) | |
393 | return NULL; | |
394 | p = strchr(str, '['); | |
395 | if (p) { | |
396 | res = p + 1; | |
397 | p = strchr(res, ']'); | |
398 | if (p) { | |
399 | *p = '\0'; | |
400 | res = xstrdup(res); | |
401 | } else | |
402 | res = NULL; | |
403 | } | |
404 | free(str); | |
405 | return res; | |
406 | } | |
407 | ||
18eac5ba MB |
408 | static char *get_type(struct blkdev_cxt *cxt) |
409 | { | |
410 | char *res = NULL, *p; | |
411 | ||
412 | if (is_dm(cxt->name)) { | |
766ab9b0 | 413 | char *dm_uuid = sysfs_strdup(&cxt->sysfs, "dm/uuid"); |
18eac5ba MB |
414 | |
415 | /* The DM_UUID prefix should be set to subsystem owning | |
416 | * the device - LVM, CRYPT, DMRAID, MPATH, PART */ | |
417 | if (dm_uuid) { | |
418 | char *tmp = dm_uuid; | |
419 | char *dm_uuid_prefix = strsep(&tmp, "-"); | |
420 | ||
421 | if (dm_uuid_prefix) { | |
422 | /* kpartx hack to remove partition number */ | |
423 | if (strncasecmp(dm_uuid_prefix, "part", 4) == 0) | |
424 | dm_uuid_prefix[4] = '\0'; | |
425 | ||
426 | res = xstrdup(dm_uuid_prefix); | |
427 | } | |
428 | } | |
429 | ||
430 | free(dm_uuid); | |
431 | if (!res) | |
432 | /* No UUID or no prefix - just mark it as DM device */ | |
433 | res = xstrdup("dm"); | |
434 | ||
435 | } else if (!strncmp(cxt->name, "loop", 4)) { | |
436 | res = xstrdup("loop"); | |
437 | ||
438 | } else if (!strncmp(cxt->name, "md", 2)) { | |
766ab9b0 | 439 | char *md_level = sysfs_strdup(&cxt->sysfs, "md/level"); |
18eac5ba MB |
440 | res = md_level ? md_level : xstrdup("md"); |
441 | ||
442 | } else { | |
443 | const char *type = cxt->partition ? "part" : "disk"; | |
90e9fcda | 444 | int x = 0; |
18eac5ba | 445 | |
90e9fcda KZ |
446 | sysfs_read_int(&cxt->sysfs, "device/type", &x); |
447 | ||
448 | switch (x) { | |
18eac5ba MB |
449 | case 0x0c: /* TYPE_RAID */ |
450 | type = "raid"; break; | |
451 | case 0x01: /* TYPE_TAPE */ | |
452 | type = "raid"; break; | |
453 | case 0x04: /* TYPE_WORM */ | |
454 | case 0x05: /* TYPE_ROM */ | |
455 | type = "rom"; break; | |
456 | case 0x07: /* TYPE_MOD */ | |
457 | type = "mo-disk"; break; | |
458 | case 0x0e: /* TYPE_RBC */ | |
459 | type = "rbc"; break; | |
460 | } | |
461 | ||
90e9fcda | 462 | res = xstrdup(type); |
18eac5ba MB |
463 | } |
464 | ||
465 | for (p = res; p && *p; p++) | |
466 | *p = tolower((unsigned char) *p); | |
467 | return res; | |
468 | } | |
469 | ||
2a4c734b MB |
470 | static void set_tt_data(struct blkdev_cxt *cxt, int col, int id, struct tt_line *ln) |
471 | { | |
472 | char buf[1024]; | |
9cfe1b9c | 473 | char *p = NULL; |
1dc42eb6 | 474 | int st_rc = 0; |
2a4c734b MB |
475 | |
476 | if (!cxt->st.st_rdev && (id == COL_OWNER || id == COL_GROUP || | |
477 | id == COL_MODE)) | |
1dc42eb6 | 478 | st_rc = stat(cxt->filename, &cxt->st); |
2a4c734b MB |
479 | |
480 | switch(id) { | |
481 | case COL_NAME: | |
482 | if (cxt->dm_name) { | |
205eb002 KZ |
483 | if ((lsblk->tt->flags & TT_FL_RAW) || |
484 | (lsblk->tt->flags & TT_FL_EXPORT)) | |
485 | tt_line_set_data(ln, col, xstrdup(cxt->dm_name)); | |
486 | else { | |
487 | snprintf(buf, sizeof(buf), "%s (%s)", | |
2a4c734b | 488 | cxt->dm_name, cxt->name); |
205eb002 KZ |
489 | tt_line_set_data(ln, col, xstrdup(buf)); |
490 | } | |
2a4c734b MB |
491 | break; |
492 | } | |
493 | case COL_KNAME: | |
494 | tt_line_set_data(ln, col, xstrdup(cxt->name)); | |
495 | break; | |
496 | case COL_OWNER: | |
497 | { | |
1dc42eb6 | 498 | struct passwd *pw = st_rc ? NULL : getpwuid(cxt->st.st_uid); |
2a4c734b MB |
499 | if (pw) |
500 | tt_line_set_data(ln, col, xstrdup(pw->pw_name)); | |
501 | break; | |
502 | } | |
503 | case COL_GROUP: | |
504 | { | |
1dc42eb6 | 505 | struct group *gr = st_rc ? NULL : getgrgid(cxt->st.st_gid); |
2a4c734b MB |
506 | if (gr) |
507 | tt_line_set_data(ln, col, xstrdup(gr->gr_name)); | |
508 | break; | |
509 | } | |
510 | case COL_MODE: | |
511 | { | |
512 | char md[11]; | |
1dc42eb6 KZ |
513 | |
514 | if (!st_rc) { | |
515 | strmode(cxt->st.st_mode, md); | |
516 | tt_line_set_data(ln, col, xstrdup(md)); | |
517 | } | |
2a4c734b MB |
518 | break; |
519 | } | |
520 | case COL_MAJMIN: | |
6ea1bdd3 KZ |
521 | if ((lsblk->tt->flags & TT_FL_RAW) || |
522 | (lsblk->tt->flags & TT_FL_EXPORT)) | |
2a4c734b MB |
523 | snprintf(buf, sizeof(buf), "%u:%u", cxt->maj, cxt->min); |
524 | else | |
525 | snprintf(buf, sizeof(buf), "%3u:%-3u", cxt->maj, cxt->min); | |
526 | tt_line_set_data(ln, col, xstrdup(buf)); | |
527 | break; | |
528 | case COL_FSTYPE: | |
529 | probe_device(cxt); | |
530 | if (cxt->fstype) | |
531 | tt_line_set_data(ln, col, xstrdup(cxt->fstype)); | |
532 | break; | |
533 | case COL_TARGET: | |
09a71aa1 | 534 | if (!(cxt->nholders + cxt->npartitions)) { |
2a4c734b MB |
535 | p = get_device_mountpoint(cxt); |
536 | if (p) | |
537 | tt_line_set_data(ln, col, p); | |
538 | } | |
539 | break; | |
540 | case COL_LABEL: | |
541 | probe_device(cxt); | |
542 | if (cxt->label) | |
543 | tt_line_set_data(ln, col, xstrdup(cxt->label)); | |
544 | break; | |
545 | case COL_UUID: | |
546 | probe_device(cxt); | |
547 | if (cxt->uuid) | |
548 | tt_line_set_data(ln, col, xstrdup(cxt->uuid)); | |
549 | break; | |
550 | case COL_RO: | |
551 | tt_line_set_data(ln, col, is_readonly_device(cxt) ? | |
552 | xstrdup("1") : xstrdup("0")); | |
553 | break; | |
627970a7 | 554 | case COL_RM: |
766ab9b0 | 555 | p = sysfs_strdup(&cxt->sysfs, "removable"); |
09a71aa1 PR |
556 | if (!p && cxt->sysfs.parent) |
557 | p = sysfs_strdup(cxt->sysfs.parent, "removable"); | |
2a4c734b MB |
558 | if (p) |
559 | tt_line_set_data(ln, col, p); | |
560 | break; | |
561 | case COL_ROTA: | |
766ab9b0 | 562 | p = sysfs_strdup(&cxt->sysfs, "queue/rotational"); |
2a4c734b MB |
563 | if (p) |
564 | tt_line_set_data(ln, col, p); | |
565 | break; | |
566 | case COL_MODEL: | |
567 | if (!cxt->partition && cxt->nslaves == 0) { | |
766ab9b0 | 568 | p = sysfs_strdup(&cxt->sysfs, "device/model"); |
2a4c734b MB |
569 | if (p) |
570 | tt_line_set_data(ln, col, p); | |
571 | } | |
572 | break; | |
573 | case COL_SIZE: | |
574 | if (cxt->size) { | |
575 | if (lsblk->bytes) { | |
576 | if (asprintf(&p, "%jd", cxt->size) < 0) | |
577 | p = NULL; | |
578 | } else | |
5d2a9849 | 579 | p = size_to_human_string(SIZE_SUFFIX_1LETTER, cxt->size); |
2a4c734b MB |
580 | if (p) |
581 | tt_line_set_data(ln, col, p); | |
582 | } | |
583 | break; | |
01e487c0 MB |
584 | case COL_STATE: |
585 | if (!cxt->partition && !cxt->dm_name) { | |
586 | p = sysfs_strdup(&cxt->sysfs, "device/state"); | |
587 | } else if (cxt->dm_name) { | |
588 | int x = 0; | |
589 | if (sysfs_read_int(&cxt->sysfs, "dm/suspended", &x) == 0) | |
590 | p = x ? xstrdup("suspended") : xstrdup("running"); | |
591 | } | |
592 | if (p) | |
593 | tt_line_set_data(ln, col, p); | |
594 | break; | |
2a4c734b | 595 | case COL_ALIOFF: |
766ab9b0 | 596 | p = sysfs_strdup(&cxt->sysfs, "alignment_offset"); |
2a4c734b MB |
597 | if (p) |
598 | tt_line_set_data(ln, col, p); | |
599 | break; | |
600 | case COL_MINIO: | |
766ab9b0 | 601 | p = sysfs_strdup(&cxt->sysfs, "queue/minimum_io_size"); |
2a4c734b MB |
602 | if (p) |
603 | tt_line_set_data(ln, col, p); | |
604 | break; | |
605 | case COL_OPTIO: | |
766ab9b0 | 606 | p = sysfs_strdup(&cxt->sysfs, "queue/optimal_io_size"); |
2a4c734b MB |
607 | if (p) |
608 | tt_line_set_data(ln, col, p); | |
609 | break; | |
610 | case COL_PHYSEC: | |
766ab9b0 | 611 | p = sysfs_strdup(&cxt->sysfs, "queue/physical_block_size"); |
2a4c734b MB |
612 | if (p) |
613 | tt_line_set_data(ln, col, p); | |
614 | break; | |
615 | case COL_LOGSEC: | |
766ab9b0 | 616 | p = sysfs_strdup(&cxt->sysfs, "queue/logical_block_size"); |
2a4c734b MB |
617 | if (p) |
618 | tt_line_set_data(ln, col, p); | |
619 | break; | |
620 | case COL_SCHED: | |
621 | p = get_scheduler(cxt); | |
622 | if (p) | |
623 | tt_line_set_data(ln, col, p); | |
624 | break; | |
64c9e22a MB |
625 | case COL_RQ_SIZE: |
626 | p = sysfs_strdup(&cxt->sysfs, "queue/nr_requests"); | |
627 | if (p) | |
628 | tt_line_set_data(ln, col, p); | |
629 | break; | |
18eac5ba MB |
630 | case COL_TYPE: |
631 | p = get_type(cxt); | |
632 | if (p) | |
633 | tt_line_set_data(ln, col, p); | |
634 | break; | |
2d232246 | 635 | case COL_DALIGN: |
766ab9b0 | 636 | p = sysfs_strdup(&cxt->sysfs, "discard_alignment"); |
98055888 | 637 | if (cxt->discard && p) |
2d232246 | 638 | tt_line_set_data(ln, col, p); |
98055888 MP |
639 | else |
640 | tt_line_set_data(ln, col, "0"); | |
2d232246 MP |
641 | break; |
642 | case COL_DGRAN: | |
9cfe1b9c KZ |
643 | if (lsblk->bytes) |
644 | p = sysfs_strdup(&cxt->sysfs, "queue/discard_granularity"); | |
645 | else { | |
646 | uint64_t x; | |
647 | ||
648 | if (sysfs_read_u64(&cxt->sysfs, | |
649 | "queue/discard_granularity", &x) == 0) | |
5d2a9849 | 650 | p = size_to_human_string(SIZE_SUFFIX_1LETTER, x); |
9cfe1b9c | 651 | } |
2d232246 MP |
652 | if (p) |
653 | tt_line_set_data(ln, col, p); | |
654 | break; | |
655 | case COL_DMAX: | |
9cfe1b9c KZ |
656 | if (lsblk->bytes) |
657 | p = sysfs_strdup(&cxt->sysfs, "queue/discard_max_bytes"); | |
658 | else { | |
659 | uint64_t x; | |
660 | ||
661 | if (sysfs_read_u64(&cxt->sysfs, | |
662 | "queue/discard_max_bytes", &x) == 0) | |
5d2a9849 | 663 | p = size_to_human_string(SIZE_SUFFIX_1LETTER, x); |
9cfe1b9c | 664 | } |
2d232246 MP |
665 | if (p) |
666 | tt_line_set_data(ln, col, p); | |
667 | break; | |
668 | case COL_DZERO: | |
766ab9b0 | 669 | p = sysfs_strdup(&cxt->sysfs, "queue/discard_zeroes_data"); |
98055888 | 670 | if (cxt->discard && p) |
2d232246 | 671 | tt_line_set_data(ln, col, p); |
98055888 MP |
672 | else |
673 | tt_line_set_data(ln, col, "0"); | |
2d232246 | 674 | break; |
2a4c734b MB |
675 | }; |
676 | } | |
677 | ||
678 | static void print_device(struct blkdev_cxt *cxt, struct tt_line *tt_parent) | |
679 | { | |
680 | int i; | |
681 | ||
682 | cxt->tt_line = tt_add_line(lsblk->tt, tt_parent); | |
683 | ||
684 | for (i = 0; i < ncolumns; i++) | |
685 | set_tt_data(cxt, i, get_column_id(i), cxt->tt_line); | |
686 | } | |
687 | ||
688 | static int set_cxt(struct blkdev_cxt *cxt, | |
689 | struct blkdev_cxt *parent, | |
09a71aa1 PR |
690 | struct blkdev_cxt *wholedisk, |
691 | const char *name) | |
2a4c734b | 692 | { |
766ab9b0 | 693 | dev_t devno; |
2a4c734b MB |
694 | |
695 | cxt->parent = parent; | |
696 | cxt->name = xstrdup(name); | |
09a71aa1 | 697 | cxt->partition = wholedisk != NULL; |
2a4c734b MB |
698 | |
699 | cxt->filename = get_device_path(cxt); | |
270e66ec MB |
700 | if (!cxt->filename) { |
701 | warnx(_("%s: failed to get device path"), name); | |
702 | return -1; | |
703 | } | |
2a4c734b | 704 | |
09a71aa1 PR |
705 | devno = sysfs_devname_to_devno(name, wholedisk ? wholedisk->name : NULL); |
706 | ||
270e66ec MB |
707 | if (!devno) { |
708 | warnx(_("%s: unknown device name"), name); | |
709 | return -1; | |
710 | } | |
2a4c734b | 711 | |
09a71aa1 PR |
712 | if (lsblk->inverse) { |
713 | if (sysfs_init(&cxt->sysfs, devno, wholedisk ? &wholedisk->sysfs : NULL)) { | |
714 | warnx(_("%s: failed to initialize sysfs handler"), name); | |
715 | return -1; | |
716 | } | |
717 | if (parent) | |
718 | parent->sysfs.parent = &cxt->sysfs; | |
719 | } else { | |
720 | if (sysfs_init(&cxt->sysfs, devno, parent ? &parent->sysfs : NULL)) { | |
721 | warnx(_("%s: failed to initialize sysfs handler"), name); | |
722 | return -1; | |
723 | } | |
270e66ec | 724 | } |
766ab9b0 KZ |
725 | |
726 | cxt->maj = major(devno); | |
727 | cxt->min = minor(devno); | |
2a4c734b | 728 | |
90e9fcda KZ |
729 | sysfs_read_u64(&cxt->sysfs, "size", &cxt->size); /* in sectors */ |
730 | cxt->size <<= 9; /* in bytes */ | |
731 | ||
732 | sysfs_read_int(&cxt->sysfs, "queue/discard_granularity", &cxt->discard); | |
2a4c734b MB |
733 | |
734 | /* Ignore devices of zero size */ | |
735 | if (!lsblk->all_devices && cxt->size == 0) | |
736 | return -1; | |
737 | ||
766ab9b0 KZ |
738 | if (is_dm(name)) { |
739 | cxt->dm_name = sysfs_strdup(&cxt->sysfs, "dm/name"); | |
270e66ec MB |
740 | if (!cxt->dm_name) { |
741 | warnx(_("%s: failed to get dm name"), name); | |
742 | return -1; | |
743 | } | |
766ab9b0 | 744 | } |
2a4c734b | 745 | |
09a71aa1 PR |
746 | cxt->npartitions = sysfs_count_partitions(&cxt->sysfs, name); |
747 | cxt->nholders = sysfs_count_dirents(&cxt->sysfs, "holders"); | |
766ab9b0 | 748 | cxt->nslaves = sysfs_count_dirents(&cxt->sysfs, "slaves"); |
2a4c734b MB |
749 | |
750 | return 0; | |
751 | } | |
752 | ||
09a71aa1 PR |
753 | static int process_blkdev(struct blkdev_cxt *cxt, struct blkdev_cxt *parent, |
754 | int do_partitions, const char *part_name); | |
755 | ||
2a4c734b | 756 | /* |
09a71aa1 | 757 | * List device partitions if any. |
2a4c734b | 758 | */ |
09a71aa1 PR |
759 | static int list_partitions(struct blkdev_cxt *wholedisk_cxt, struct blkdev_cxt *parent_cxt, |
760 | const char *part_name) | |
2a4c734b MB |
761 | { |
762 | DIR *dir; | |
763 | struct dirent *d; | |
09a71aa1 PR |
764 | struct blkdev_cxt part_cxt = {}; |
765 | int r = -1; | |
2a4c734b | 766 | |
09a71aa1 | 767 | assert(wholedisk_cxt); |
f31505fe | 768 | |
09a71aa1 PR |
769 | /* |
770 | * Do not process further if there are no partitions for | |
771 | * this device or the device itself is a partition. | |
772 | */ | |
773 | if (!wholedisk_cxt->npartitions || wholedisk_cxt->partition) | |
774 | return -1; | |
2a4c734b | 775 | |
09a71aa1 | 776 | dir = sysfs_opendir(&wholedisk_cxt->sysfs, NULL); |
2a4c734b MB |
777 | if (!dir) |
778 | err(EXIT_FAILURE, _("failed to open device directory in sysfs")); | |
779 | ||
780 | while ((d = xreaddir(dir))) { | |
09a71aa1 PR |
781 | /* Process particular partition only? */ |
782 | if (part_name && strcmp(part_name, d->d_name)) | |
2a4c734b MB |
783 | continue; |
784 | ||
09a71aa1 | 785 | if (!(sysfs_is_partition_dirent(dir, d, wholedisk_cxt->name))) |
270e66ec | 786 | continue; |
09a71aa1 PR |
787 | |
788 | if (lsblk->inverse) { | |
789 | /* | |
790 | * <parent_cxt> | |
791 | * `-<part_cxt> | |
792 | * `-<wholedisk_cxt> | |
793 | * `-... | |
794 | */ | |
795 | if (set_cxt(&part_cxt, parent_cxt, wholedisk_cxt, d->d_name)) | |
796 | goto next; | |
797 | ||
798 | if (!parent_cxt && part_cxt.nholders) | |
799 | goto next; | |
800 | ||
801 | wholedisk_cxt->parent = &part_cxt; | |
802 | print_device(&part_cxt, parent_cxt ? parent_cxt->tt_line : NULL); | |
803 | if (!lsblk->nodeps) | |
804 | process_blkdev(wholedisk_cxt, &part_cxt, 0, NULL); | |
805 | } else { | |
806 | /* | |
807 | * <parent_cxt> | |
808 | * `-<wholedisk_cxt> | |
809 | * `-<part_cxt> | |
810 | * `-... | |
811 | */ | |
812 | if (set_cxt(&part_cxt, wholedisk_cxt, wholedisk_cxt, d->d_name)) | |
813 | goto next; | |
814 | /* Print whole disk only once */ | |
815 | if (r) | |
816 | print_device(wholedisk_cxt, parent_cxt ? parent_cxt->tt_line : NULL); | |
817 | if (!lsblk->nodeps) | |
818 | process_blkdev(&part_cxt, wholedisk_cxt, 0, NULL); | |
270e66ec | 819 | } |
09a71aa1 PR |
820 | next: |
821 | reset_blkdev_cxt(&part_cxt); | |
822 | r = 0; | |
2a4c734b | 823 | } |
09a71aa1 | 824 | |
2a4c734b | 825 | closedir(dir); |
09a71aa1 PR |
826 | return r; |
827 | } | |
828 | ||
829 | static int get_wholedisk_from_partition_dirent(DIR *dir, struct dirent *d, | |
830 | struct blkdev_cxt *cxt) | |
831 | { | |
832 | char path[PATH_MAX]; | |
833 | char *p; | |
834 | int len; | |
835 | ||
836 | if ((len = readlinkat(dirfd(dir), d->d_name, path, sizeof(path))) < 0) | |
837 | return 0; | |
838 | path[len]='\0'; | |
839 | ||
840 | /* The path ends with ".../<device>/<partition>" */ | |
841 | p = strrchr(path, '/'); *p = '\0'; | |
842 | p = strrchr(path, '/'); p++; | |
2a4c734b | 843 | |
09a71aa1 PR |
844 | return set_cxt(cxt, NULL, NULL, p); |
845 | } | |
846 | ||
847 | /* | |
848 | * List device dependencies: partitions, holders (inverse = 0) or slaves (inverse = 1). | |
849 | */ | |
850 | static int list_deps(struct blkdev_cxt *cxt) | |
851 | { | |
852 | DIR *dir; | |
853 | struct dirent *d; | |
854 | struct blkdev_cxt dep = {}; | |
855 | ||
856 | assert(cxt); | |
857 | ||
858 | if (lsblk->nodeps) | |
859 | return 0; | |
860 | ||
861 | if (!(lsblk->inverse ? cxt->nslaves : cxt->nholders)) | |
862 | return 0; | |
863 | ||
864 | dir = sysfs_opendir(&cxt->sysfs, lsblk->inverse ? "slaves" : "holders"); | |
2a4c734b MB |
865 | if (!dir) |
866 | return 0; | |
867 | ||
868 | while ((d = xreaddir(dir))) { | |
09a71aa1 PR |
869 | /* Is the dependency a partition? */ |
870 | if (sysfs_is_partition_dirent(dir, d, NULL)) { | |
871 | if (!get_wholedisk_from_partition_dirent(dir, d, &dep)) | |
872 | process_blkdev(&dep, cxt, 1, d->d_name); | |
270e66ec | 873 | } |
09a71aa1 PR |
874 | /* The dependency is a whole device. */ |
875 | else if (!set_cxt(&dep, cxt, NULL, d->d_name)) | |
876 | process_blkdev(&dep, cxt, 1, NULL); | |
877 | ||
878 | reset_blkdev_cxt(&dep); | |
2a4c734b MB |
879 | } |
880 | closedir(dir); | |
881 | ||
882 | return 0; | |
883 | } | |
884 | ||
09a71aa1 PR |
885 | static int process_blkdev(struct blkdev_cxt *cxt, struct blkdev_cxt *parent, |
886 | int do_partitions, const char *part_name) | |
887 | { | |
888 | if (do_partitions && cxt->npartitions) | |
889 | return list_partitions(cxt, parent, part_name); | |
890 | ||
891 | print_device(cxt, parent ? parent->tt_line : NULL); | |
892 | return list_deps(cxt); | |
893 | } | |
894 | ||
895 | /* Iterate devices in sysfs */ | |
2a4c734b MB |
896 | static int iterate_block_devices(void) |
897 | { | |
898 | DIR *dir; | |
899 | struct dirent *d; | |
900 | struct blkdev_cxt cxt = {}; | |
901 | ||
902 | if (!(dir = opendir(_PATH_SYS_BLOCK))) | |
903 | return EXIT_FAILURE; | |
904 | ||
905 | while ((d = xreaddir(dir))) { | |
09a71aa1 | 906 | if (set_cxt(&cxt, NULL, NULL, d->d_name)) |
2a4c734b MB |
907 | goto next; |
908 | ||
09a71aa1 | 909 | if (!lsblk->all_devices && is_maj_excluded(cxt.maj)) |
2a4c734b MB |
910 | goto next; |
911 | ||
09a71aa1 PR |
912 | /* Skip devices in the middle of dependency tree. */ |
913 | if ((lsblk->inverse ? cxt.nholders : cxt.nslaves) > 0) | |
2a4c734b MB |
914 | goto next; |
915 | ||
09a71aa1 | 916 | process_blkdev(&cxt, NULL, 1, NULL); |
2a4c734b MB |
917 | next: |
918 | reset_blkdev_cxt(&cxt); | |
919 | } | |
920 | ||
921 | closedir(dir); | |
922 | ||
923 | return EXIT_SUCCESS; | |
924 | } | |
925 | ||
926 | static int process_one_device(char *devname) | |
927 | { | |
928 | struct blkdev_cxt parent = {}, cxt = {}; | |
929 | struct stat st; | |
270e66ec | 930 | char buf[PATH_MAX + 1], *diskname = NULL; |
2a4c734b | 931 | dev_t disk = 0; |
270e66ec | 932 | int status = EXIT_FAILURE; |
2a4c734b MB |
933 | |
934 | if (stat(devname, &st) || !S_ISBLK(st.st_mode)) { | |
935 | warnx(_("%s: not a block device"), devname); | |
936 | return EXIT_FAILURE; | |
937 | } | |
938 | if (blkid_devno_to_wholedisk(st.st_rdev, buf, sizeof(buf), &disk)) { | |
1117f18f | 939 | warn(_("%s: failed to get whole-disk device number"), devname); |
2a4c734b MB |
940 | return EXIT_FAILURE; |
941 | } | |
270e66ec | 942 | if (st.st_rdev == disk) { |
2a4c734b | 943 | /* |
09a71aa1 | 944 | * Device is not a partition. |
2a4c734b | 945 | */ |
09a71aa1 | 946 | if (set_cxt(&cxt, NULL, NULL, buf)) |
270e66ec | 947 | goto leave; |
09a71aa1 | 948 | process_blkdev(&cxt, NULL, !lsblk->inverse, NULL); |
270e66ec | 949 | } else { |
2a4c734b | 950 | /* |
09a71aa1 | 951 | * Partition, read sysfs name of the device. |
2a4c734b | 952 | */ |
eb9a65bb | 953 | ssize_t len; |
270e66ec | 954 | char path[PATH_MAX], *name; |
2a4c734b | 955 | |
270e66ec MB |
956 | if (!sysfs_devno_path(st.st_rdev, path, sizeof(path))) { |
957 | warn(_("failed to compose sysfs path for %s"), devname); | |
958 | goto leave; | |
959 | } | |
2a4c734b | 960 | |
766ab9b0 | 961 | diskname = xstrdup(buf); |
cc6b1d11 | 962 | len = readlink(path, buf, PATH_MAX); |
2a4c734b MB |
963 | if (len < 0) { |
964 | warn(_("%s: failed to read link"), path); | |
270e66ec | 965 | goto leave; |
2a4c734b MB |
966 | } |
967 | buf[len] = '\0'; | |
968 | ||
969 | /* sysfs device name */ | |
970 | name = strrchr(buf, '/') + 1; | |
971 | ||
09a71aa1 | 972 | if (set_cxt(&parent, NULL, NULL, diskname)) |
270e66ec | 973 | goto leave; |
09a71aa1 | 974 | if (set_cxt(&cxt, &parent, &parent, name)) |
270e66ec | 975 | goto leave; |
09a71aa1 PR |
976 | |
977 | if (lsblk->inverse) | |
978 | process_blkdev(&parent, &cxt, 1, cxt.name); | |
979 | else | |
980 | process_blkdev(&cxt, &parent, 1, NULL); | |
2a4c734b MB |
981 | } |
982 | ||
270e66ec MB |
983 | status = EXIT_SUCCESS; |
984 | leave: | |
985 | free(diskname); | |
2a4c734b MB |
986 | reset_blkdev_cxt(&cxt); |
987 | ||
988 | if (st.st_rdev != disk) | |
989 | reset_blkdev_cxt(&parent); | |
990 | ||
270e66ec | 991 | return status; |
2a4c734b MB |
992 | } |
993 | ||
994 | static void parse_excludes(const char *str) | |
995 | { | |
996 | nexcludes = 0; | |
997 | ||
998 | while (str && *str) { | |
999 | char *end = NULL; | |
ed34643c | 1000 | unsigned long n; |
2a4c734b MB |
1001 | |
1002 | errno = 0; | |
1003 | n = strtoul(str, &end, 10); | |
1004 | ||
1005 | if (end == str || (errno != 0 && (n == ULONG_MAX || n == 0))) | |
1006 | err(EXIT_FAILURE, _("failed to parse list '%s'"), str); | |
1007 | excludes[nexcludes++] = n; | |
1008 | ||
1009 | if (nexcludes == ARRAY_SIZE(excludes)) | |
f14f02f5 | 1010 | /* TRANSLATORS: The standard value for %d is 256. */ |
2a4c734b MB |
1011 | errx(EXIT_FAILURE, _("the list of excluded devices is " |
1012 | "too large (limit is %d devices)"), | |
1013 | (int)ARRAY_SIZE(excludes)); | |
1014 | str = end && *end ? end + 1 : NULL; | |
1015 | } | |
1016 | } | |
1017 | ||
abafd686 | 1018 | static void __attribute__((__noreturn__)) help(FILE *out) |
2a4c734b | 1019 | { |
507d39c2 | 1020 | size_t i; |
2a4c734b MB |
1021 | |
1022 | fprintf(out, _( | |
1023 | "\nUsage:\n" | |
1024 | " %s [options] [<device> ...]\n"), program_invocation_short_name); | |
1025 | ||
1026 | fprintf(out, _( | |
1027 | "\nOptions:\n" | |
1028 | " -a, --all print all devices\n" | |
1029 | " -b, --bytes print SIZE in bytes rather than in human readable format\n" | |
f31505fe | 1030 | " -d, --nodeps don't print slaves or holders\n" |
2d232246 | 1031 | " -D, --discard print discard capabilities\n" |
2a4c734b MB |
1032 | " -e, --exclude <list> exclude devices by major number (default: RAM disks)\n" |
1033 | " -f, --fs output info about filesystems\n" | |
1034 | " -h, --help usage information (this)\n" | |
1035 | " -i, --ascii use ascii characters only\n" | |
1036 | " -m, --perms output info about permissions\n" | |
1037 | " -l, --list use list format ouput\n" | |
1038 | " -n, --noheadings don't print headings\n" | |
1039 | " -o, --output <list> output columns\n" | |
6ea1bdd3 KZ |
1040 | " -P, --pairs use key=\"value\" output format\n" |
1041 | " -r, --raw use raw output format\n" | |
09a71aa1 | 1042 | " -s, --inverse inverse dependencies\n" |
2a4c734b MB |
1043 | " -t, --topology output info about topology\n")); |
1044 | ||
1045 | fprintf(out, _("\nAvailable columns:\n")); | |
1046 | ||
507d39c2 | 1047 | for (i = 0; i < NCOLS; i++) |
d015794e | 1048 | fprintf(out, " %10s %s\n", infos[i].name, _(infos[i].help)); |
2a4c734b | 1049 | |
f77fa578 | 1050 | fprintf(out, _("\nFor more information see lsblk(8).\n")); |
2a4c734b MB |
1051 | |
1052 | exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS); | |
1053 | } | |
1054 | ||
abafd686 | 1055 | static void __attribute__((__noreturn__)) |
2a4c734b MB |
1056 | errx_mutually_exclusive(const char *opts) |
1057 | { | |
1058 | errx(EXIT_FAILURE, "%s %s", opts, _("options are mutually exclusive")); | |
1059 | } | |
1060 | ||
f65b3bb6 SK |
1061 | static void check_sysdevblock(void) |
1062 | { | |
1063 | if (access(_PATH_SYS_DEVBLOCK, R_OK) != 0) | |
1064 | err(EXIT_FAILURE, _("failed to access sysfs directory: %s"), | |
1065 | _PATH_SYS_DEVBLOCK); | |
1066 | } | |
1067 | ||
2a4c734b MB |
1068 | int main(int argc, char *argv[]) |
1069 | { | |
1070 | struct lsblk _ls; | |
1071 | int tt_flags = TT_FL_TREE; | |
1072 | int i, c, status = EXIT_FAILURE; | |
1073 | ||
6c7d5ae9 | 1074 | static const struct option longopts[] = { |
2a4c734b | 1075 | { "all", 0, 0, 'a' }, |
f31505fe KZ |
1076 | { "bytes", 0, 0, 'b' }, |
1077 | { "nodeps", 0, 0, 'd' }, | |
2d232246 | 1078 | { "discard", 0, 0, 'D' }, |
2a4c734b MB |
1079 | { "help", 0, 0, 'h' }, |
1080 | { "output", 1, 0, 'o' }, | |
1081 | { "perms", 0, 0, 'm' }, | |
1082 | { "noheadings", 0, 0, 'n' }, | |
1083 | { "list", 0, 0, 'l' }, | |
1084 | { "ascii", 0, 0, 'i' }, | |
1085 | { "raw", 0, 0, 'r' }, | |
09a71aa1 | 1086 | { "inverse", 0, 0, 's' }, |
2a4c734b MB |
1087 | { "fs", 0, 0, 'f' }, |
1088 | { "exclude", 1, 0, 'e' }, | |
1089 | { "topology", 0, 0, 't' }, | |
6ea1bdd3 | 1090 | { "pairs", 0, 0, 'P' }, |
2a4c734b MB |
1091 | { NULL, 0, 0, 0 }, |
1092 | }; | |
1093 | ||
1094 | setlocale(LC_ALL, ""); | |
1095 | bindtextdomain(PACKAGE, LOCALEDIR); | |
1096 | textdomain(PACKAGE); | |
1097 | ||
1098 | lsblk = &_ls; | |
1099 | memset(lsblk, 0, sizeof(*lsblk)); | |
1100 | ||
09a71aa1 | 1101 | while((c = getopt_long(argc, argv, "abdDe:fhlnmo:Pirst", longopts, NULL)) != -1) { |
2a4c734b MB |
1102 | switch(c) { |
1103 | case 'a': | |
1104 | lsblk->all_devices = 1; | |
1105 | break; | |
1106 | case 'b': | |
1107 | lsblk->bytes = 1; | |
1108 | break; | |
f31505fe KZ |
1109 | case 'd': |
1110 | lsblk->nodeps = 1; | |
1111 | break; | |
2d232246 MP |
1112 | case 'D': |
1113 | columns[ncolumns++] = COL_NAME; | |
1114 | columns[ncolumns++] = COL_DALIGN; | |
1115 | columns[ncolumns++] = COL_DGRAN; | |
1116 | columns[ncolumns++] = COL_DMAX; | |
1117 | columns[ncolumns++] = COL_DZERO; | |
1118 | break; | |
2a4c734b MB |
1119 | case 'e': |
1120 | parse_excludes(optarg); | |
1121 | break; | |
1122 | case 'h': | |
1123 | help(stdout); | |
1124 | break; | |
1125 | case 'l': | |
6ea1bdd3 KZ |
1126 | if ((tt_flags & TT_FL_RAW)|| (tt_flags & TT_FL_EXPORT)) |
1127 | errx_mutually_exclusive("--{raw,list,export}"); | |
2a4c734b MB |
1128 | |
1129 | tt_flags &= ~TT_FL_TREE; /* disable the default */ | |
1130 | break; | |
1131 | case 'n': | |
1132 | tt_flags |= TT_FL_NOHEADINGS; | |
1133 | break; | |
1134 | case 'o': | |
c87638ad | 1135 | ncolumns = string_to_idarray(optarg, |
bdc3ed66 KZ |
1136 | columns, ARRAY_SIZE(columns), |
1137 | column_name_to_id); | |
1138 | if (ncolumns < 0) | |
2a4c734b MB |
1139 | return EXIT_FAILURE; |
1140 | break; | |
6ea1bdd3 KZ |
1141 | case 'P': |
1142 | tt_flags |= TT_FL_EXPORT; | |
1143 | tt_flags &= ~TT_FL_TREE; /* disable the default */ | |
1144 | break; | |
2a4c734b | 1145 | case 'i': |
449f9336 | 1146 | tt_flags |= TT_FL_ASCII; |
2a4c734b MB |
1147 | break; |
1148 | case 'r': | |
1149 | tt_flags &= ~TT_FL_TREE; /* disable the default */ | |
1150 | tt_flags |= TT_FL_RAW; /* enable raw */ | |
1151 | break; | |
09a71aa1 PR |
1152 | case 's': |
1153 | lsblk->inverse = 1; | |
1154 | break; | |
2a4c734b MB |
1155 | case 'f': |
1156 | columns[ncolumns++] = COL_NAME; | |
1157 | columns[ncolumns++] = COL_FSTYPE; | |
1158 | columns[ncolumns++] = COL_LABEL; | |
38a8d69e | 1159 | columns[ncolumns++] = COL_UUID; |
2a4c734b MB |
1160 | columns[ncolumns++] = COL_TARGET; |
1161 | break; | |
1162 | case 'm': | |
1163 | columns[ncolumns++] = COL_NAME; | |
1164 | columns[ncolumns++] = COL_SIZE; | |
1165 | columns[ncolumns++] = COL_OWNER; | |
1166 | columns[ncolumns++] = COL_GROUP; | |
1167 | columns[ncolumns++] = COL_MODE; | |
1168 | break; | |
1169 | case 't': | |
1170 | columns[ncolumns++] = COL_NAME; | |
1171 | columns[ncolumns++] = COL_ALIOFF; | |
1172 | columns[ncolumns++] = COL_MINIO; | |
1173 | columns[ncolumns++] = COL_OPTIO; | |
1174 | columns[ncolumns++] = COL_PHYSEC; | |
1175 | columns[ncolumns++] = COL_LOGSEC; | |
1176 | columns[ncolumns++] = COL_ROTA; | |
1177 | columns[ncolumns++] = COL_SCHED; | |
64c9e22a | 1178 | columns[ncolumns++] = COL_RQ_SIZE; |
2a4c734b MB |
1179 | break; |
1180 | default: | |
1181 | help(stderr); | |
1182 | } | |
1183 | } | |
1184 | ||
f65b3bb6 SK |
1185 | check_sysdevblock(); |
1186 | ||
2a4c734b MB |
1187 | if (!ncolumns) { |
1188 | columns[ncolumns++] = COL_NAME; | |
1189 | columns[ncolumns++] = COL_MAJMIN; | |
627970a7 | 1190 | columns[ncolumns++] = COL_RM; |
2a4c734b MB |
1191 | columns[ncolumns++] = COL_SIZE; |
1192 | columns[ncolumns++] = COL_RO; | |
18eac5ba | 1193 | columns[ncolumns++] = COL_TYPE; |
2a4c734b MB |
1194 | columns[ncolumns++] = COL_TARGET; |
1195 | } | |
1196 | ||
1197 | if (nexcludes && lsblk->all_devices) | |
1198 | errx_mutually_exclusive("--{all,exclude}"); | |
1199 | else if (!nexcludes) | |
1200 | excludes[nexcludes++] = 1; /* default: ignore RAM disks */ | |
1201 | /* | |
1202 | * initialize output columns | |
1203 | */ | |
1204 | if (!(lsblk->tt = tt_new_table(tt_flags))) | |
1205 | errx(EXIT_FAILURE, _("failed to initialize output table")); | |
1206 | ||
1207 | for (i = 0; i < ncolumns; i++) { | |
1208 | struct colinfo *ci = get_column_info(i); | |
1209 | int fl = ci->flags; | |
1210 | ||
1211 | if (!(tt_flags & TT_FL_TREE) && get_column_id(i) == COL_NAME) | |
1212 | fl &= ~TT_FL_TREE; | |
1213 | ||
1214 | if (!tt_define_column(lsblk->tt, ci->name, ci->whint, fl)) { | |
1215 | warn(_("failed to initialize output column")); | |
1216 | goto leave; | |
1217 | } | |
1218 | } | |
1219 | ||
1220 | if (optind == argc) | |
1221 | status = iterate_block_devices(); | |
1222 | else while (optind < argc) | |
1223 | status = process_one_device(argv[optind++]); | |
1224 | ||
1225 | tt_print_table(lsblk->tt); | |
1226 | ||
1227 | leave: | |
1228 | tt_free_table(lsblk->tt); | |
1229 | return status; | |
1230 | } |