]> git.ipfire.org Git - thirdparty/util-linux.git/blob - misc-utils/lsblk.c
projects / thirdparty / util-linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
lsblk: print zero rather than empty SIZE
[thirdparty/util-linux.git] / misc-utils / lsblk.c
1 /*
2 * lsblk(8) - list block devices
3 *
4 * Copyright (C) 2010-2018 Red Hat, Inc. All rights reserved.
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 *
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.
21 */
22 #include <stdio.h>
23 #include <errno.h>
24 #include <getopt.h>
25 #include <stdlib.h>
26 #include <unistd.h>
27 #include <sys/types.h>
28 #include <sys/stat.h>
29 #include <dirent.h>
30 #include <fcntl.h>
31 #include <string.h>
32 #include <sys/ioctl.h>
33 #include <stdarg.h>
34 #include <locale.h>
35 #include <pwd.h>
36 #include <grp.h>
37 #include <ctype.h>
38 #include <assert.h>
39
40 #include <blkid.h>
41
42 #include "c.h"
43 #include "pathnames.h"
44 #include "blkdev.h"
45 #include "canonicalize.h"
46 #include "nls.h"
47 #include "xalloc.h"
48 #include "strutils.h"
49 #include "sysfs.h"
50 #include "closestream.h"
51 #include "optutils.h"
52 #include "fileutils.h"
53
54 #include "lsblk.h"
55
56 UL_DEBUG_DEFINE_MASK(lsblk);
57 UL_DEBUG_DEFINE_MASKNAMES(lsblk) = UL_DEBUG_EMPTY_MASKNAMES;
58
59 #define LSBLK_EXIT_SOMEOK 64
60 #define LSBLK_EXIT_ALLFAILED 32
61
62 static int column_id_to_number(int id);
63
64 /* column IDs */
65 enum {
66 COL_NAME = 0,
67 COL_KNAME,
68 COL_PATH,
69 COL_MAJMIN,
70 COL_FSAVAIL,
71 COL_FSSIZE,
72 COL_FSTYPE,
73 COL_FSUSED,
74 COL_FSUSEPERC,
75 COL_FSVERSION,
76 COL_TARGET,
77 COL_LABEL,
78 COL_UUID,
79 COL_PTUUID,
80 COL_PTTYPE,
81 COL_PARTTYPE,
82 COL_PARTTYPENAME,
83 COL_PARTLABEL,
84 COL_PARTUUID,
85 COL_PARTFLAGS,
86 COL_RA,
87 COL_RO,
88 COL_RM,
89 COL_HOTPLUG,
90 COL_MODEL,
91 COL_SERIAL,
92 COL_SIZE,
93 COL_STATE,
94 COL_OWNER,
95 COL_GROUP,
96 COL_MODE,
97 COL_ALIOFF,
98 COL_MINIO,
99 COL_OPTIO,
100 COL_PHYSEC,
101 COL_LOGSEC,
102 COL_ROTA,
103 COL_SCHED,
104 COL_RQ_SIZE,
105 COL_TYPE,
106 COL_DALIGN,
107 COL_DGRAN,
108 COL_DMAX,
109 COL_DZERO,
110 COL_WSAME,
111 COL_WWN,
112 COL_RAND,
113 COL_PKNAME,
114 COL_HCTL,
115 COL_TRANSPORT,
116 COL_SUBSYS,
117 COL_REV,
118 COL_VENDOR,
119 COL_ZONED,
120 COL_DAX
121 };
122
123 /* basic table settings */
124 enum {
125 LSBLK_ASCII = (1 << 0),
126 LSBLK_RAW = (1 << 1),
127 LSBLK_NOHEADINGS = (1 << 2),
128 LSBLK_EXPORT = (1 << 3),
129 LSBLK_TREE = (1 << 4),
130 LSBLK_JSON = (1 << 5),
131 };
132
133 /* Types used for qsort() and JSON */
134 enum {
135 COLTYPE_STR = 0, /* default */
136 COLTYPE_NUM = 1, /* always u64 number */
137 COLTYPE_SORTNUM = 2, /* string on output, u64 for qsort() */
138 COLTYPE_SIZE = 3, /* srring by default, number when --bytes */
139 COLTYPE_BOOL = 4 /* 0 or 1 */
140 };
141
142 /* column names */
143 struct colinfo {
144 const char *name; /* header */
145 double whint; /* width hint (N < 1 is in percent of termwidth) */
146 int flags; /* SCOLS_FL_* */
147 const char *help;
148 int type; /* COLTYPE_* */
149 };
150
151 /* columns descriptions */
152 static struct colinfo infos[] = {
153 [COL_NAME] = { "NAME", 0.25, SCOLS_FL_NOEXTREMES, N_("device name") },
154 [COL_KNAME] = { "KNAME", 0.3, 0, N_("internal kernel device name") },
155 [COL_PKNAME] = { "PKNAME", 0.3, 0, N_("internal parent kernel device name") },
156 [COL_PATH] = { "PATH", 0.3, 0, N_("path to the device node") },
157 [COL_MAJMIN] = { "MAJ:MIN", 6, 0, N_("major:minor device number"), COLTYPE_SORTNUM },
158
159 [COL_FSAVAIL] = { "FSAVAIL", 5, SCOLS_FL_RIGHT, N_("filesystem size available") },
160 [COL_FSSIZE] = { "FSSIZE", 5, SCOLS_FL_RIGHT, N_("filesystem size") },
161 [COL_FSTYPE] = { "FSTYPE", 0.1, SCOLS_FL_TRUNC, N_("filesystem type") },
162 [COL_FSUSED] = { "FSUSED", 5, SCOLS_FL_RIGHT, N_("filesystem size used") },
163 [COL_FSUSEPERC] = { "FSUSE%", 3, SCOLS_FL_RIGHT, N_("filesystem use percentage") },
164 [COL_FSVERSION] = { "FSVER", 0.1, SCOLS_FL_TRUNC, N_("filesystem version") },
165
166 [COL_TARGET] = { "MOUNTPOINT", 0.10, SCOLS_FL_TRUNC, N_("where the device is mounted") },
167 [COL_LABEL] = { "LABEL", 0.1, 0, N_("filesystem LABEL") },
168 [COL_UUID] = { "UUID", 36, 0, N_("filesystem UUID") },
169
170 [COL_PTUUID] = { "PTUUID", 36, 0, N_("partition table identifier (usually UUID)") },
171 [COL_PTTYPE] = { "PTTYPE", 0.1, 0, N_("partition table type") },
172
173 [COL_PARTTYPE] = { "PARTTYPE", 36, 0, N_("partition type code or UUID") },
174 [COL_PARTTYPENAME] = { "PARTTYPENAME", 0.1, 0, N_("partition type name") },
175 [COL_PARTLABEL] = { "PARTLABEL", 0.1, 0, N_("partition LABEL") },
176 [COL_PARTUUID] = { "PARTUUID", 36, 0, N_("partition UUID") },
177 [COL_PARTFLAGS] = { "PARTFLAGS", 36, 0, N_("partition flags") },
178
179 [COL_RA] = { "RA", 3, SCOLS_FL_RIGHT, N_("read-ahead of the device"), COLTYPE_NUM },
180 [COL_RO] = { "RO", 1, SCOLS_FL_RIGHT, N_("read-only device"), COLTYPE_BOOL },
181 [COL_RM] = { "RM", 1, SCOLS_FL_RIGHT, N_("removable device"), COLTYPE_BOOL },
182 [COL_HOTPLUG]= { "HOTPLUG", 1, SCOLS_FL_RIGHT, N_("removable or hotplug device (usb, pcmcia, ...)"), COLTYPE_BOOL },
183 [COL_ROTA] = { "ROTA", 1, SCOLS_FL_RIGHT, N_("rotational device"), COLTYPE_BOOL },
184 [COL_RAND] = { "RAND", 1, SCOLS_FL_RIGHT, N_("adds randomness"), COLTYPE_BOOL },
185 [COL_MODEL] = { "MODEL", 0.1, SCOLS_FL_TRUNC, N_("device identifier") },
186 [COL_SERIAL] = { "SERIAL", 0.1, SCOLS_FL_TRUNC, N_("disk serial number") },
187 [COL_SIZE] = { "SIZE", 5, SCOLS_FL_RIGHT, N_("size of the device"), COLTYPE_SIZE },
188 [COL_STATE] = { "STATE", 7, SCOLS_FL_TRUNC, N_("state of the device") },
189 [COL_OWNER] = { "OWNER", 0.1, SCOLS_FL_TRUNC, N_("user name"), },
190 [COL_GROUP] = { "GROUP", 0.1, SCOLS_FL_TRUNC, N_("group name") },
191 [COL_MODE] = { "MODE", 10, 0, N_("device node permissions") },
192 [COL_ALIOFF] = { "ALIGNMENT", 6, SCOLS_FL_RIGHT, N_("alignment offset"), COLTYPE_NUM },
193 [COL_MINIO] = { "MIN-IO", 6, SCOLS_FL_RIGHT, N_("minimum I/O size"), COLTYPE_NUM },
194 [COL_OPTIO] = { "OPT-IO", 6, SCOLS_FL_RIGHT, N_("optimal I/O size"), COLTYPE_NUM },
195 [COL_PHYSEC] = { "PHY-SEC", 7, SCOLS_FL_RIGHT, N_("physical sector size"), COLTYPE_NUM },
196 [COL_LOGSEC] = { "LOG-SEC", 7, SCOLS_FL_RIGHT, N_("logical sector size"), COLTYPE_NUM },
197 [COL_SCHED] = { "SCHED", 0.1, 0, N_("I/O scheduler name") },
198 [COL_RQ_SIZE]= { "RQ-SIZE", 5, SCOLS_FL_RIGHT, N_("request queue size"), COLTYPE_NUM },
199 [COL_TYPE] = { "TYPE", 4, 0, N_("device type") },
200 [COL_DALIGN] = { "DISC-ALN", 6, SCOLS_FL_RIGHT, N_("discard alignment offset"), COLTYPE_NUM },
201 [COL_DGRAN] = { "DISC-GRAN", 6, SCOLS_FL_RIGHT, N_("discard granularity"), COLTYPE_SIZE },
202 [COL_DMAX] = { "DISC-MAX", 6, SCOLS_FL_RIGHT, N_("discard max bytes"), COLTYPE_SIZE },
203 [COL_DZERO] = { "DISC-ZERO", 1, SCOLS_FL_RIGHT, N_("discard zeroes data"), COLTYPE_BOOL },
204 [COL_WSAME] = { "WSAME", 6, SCOLS_FL_RIGHT, N_("write same max bytes"), COLTYPE_SIZE },
205 [COL_WWN] = { "WWN", 18, 0, N_("unique storage identifier") },
206 [COL_HCTL] = { "HCTL", 10, 0, N_("Host:Channel:Target:Lun for SCSI") },
207 [COL_TRANSPORT] = { "TRAN", 6, 0, N_("device transport type") },
208 [COL_SUBSYS] = { "SUBSYSTEMS", 0.1, SCOLS_FL_NOEXTREMES, N_("de-duplicated chain of subsystems") },
209 [COL_REV] = { "REV", 4, SCOLS_FL_RIGHT, N_("device revision") },
210 [COL_VENDOR] = { "VENDOR", 0.1, SCOLS_FL_TRUNC, N_("device vendor") },
211 [COL_ZONED] = { "ZONED", 0.3, 0, N_("zone model") },
212 [COL_DAX] = { "DAX", 1, SCOLS_FL_RIGHT, N_("dax-capable device"), COLTYPE_BOOL },
213 };
214
215 struct lsblk *lsblk; /* global handler */
216
217 /*
218 * columns[] array specifies all currently wanted output column. The columns
219 * are defined by infos[] array and you can specify (on command line) each
220 * column twice. That's enough, dynamically allocated array of the columns is
221 * unnecessary overkill and over-engineering in this case
222 */
223 static int columns[ARRAY_SIZE(infos) * 2];
224 static size_t ncolumns;
225
226 static inline void add_column(int id)
227 {
228 if (ncolumns >= ARRAY_SIZE(columns))
229 errx(EXIT_FAILURE, _("too many columns specified, "
230 "the limit is %zu columns"),
231 ARRAY_SIZE(columns) - 1);
232 columns[ ncolumns++ ] = id;
233 }
234
235 static inline void add_uniq_column(int id)
236 {
237 if (column_id_to_number(id) < 0)
238 add_column(id);
239 }
240
241 static void lsblk_init_debug(void)
242 {
243 __UL_INIT_DEBUG_FROM_ENV(lsblk, LSBLK_DEBUG_, 0, LSBLK_DEBUG);
244 }
245
246 /*
247 * exclude/include devices filter based on major device numbers
248 */
249 static int excludes[256];
250 static size_t nexcludes;
251
252 static int includes[256];
253 static size_t nincludes;
254
255 static int is_maj_excluded(int maj)
256 {
257 size_t i;
258
259 assert(ARRAY_SIZE(excludes) > nexcludes);
260
261 if (!nexcludes)
262 return 0; /* filter not enabled, device not excluded */
263
264 for (i = 0; i < nexcludes; i++) {
265 if (excludes[i] == maj) {
266 DBG(FILTER, ul_debug("exclude: maj=%d", maj));
267 return 1;
268 }
269 }
270 return 0;
271 }
272
273 static int is_maj_included(int maj)
274 {
275 size_t i;
276
277 assert(ARRAY_SIZE(includes) > nincludes);
278
279 if (!nincludes)
280 return 1; /* filter not enabled, device is included */
281
282 for (i = 0; i < nincludes; i++) {
283 if (includes[i] == maj) {
284 DBG(FILTER, ul_debug("include: maj=%d", maj));
285 return 1;
286 }
287 }
288 return 0;
289 }
290
291 /* Converts column sequential number to column ID (COL_*) */
292 static int get_column_id(int num)
293 {
294 assert(num >= 0);
295 assert((size_t) num < ncolumns);
296 assert(columns[num] < (int) ARRAY_SIZE(infos));
297 return columns[num];
298 }
299
300 /* Returns column description for the column sequential number */
301 static struct colinfo *get_column_info(int num)
302 {
303 return &infos[ get_column_id(num) ];
304 }
305
306 /* Converts column name (as defined in the infos[] to the column ID */
307 static int column_name_to_id(const char *name, size_t namesz)
308 {
309 size_t i;
310
311 for (i = 0; i < ARRAY_SIZE(infos); i++) {
312 const char *cn = infos[i].name;
313
314 if (!strncasecmp(name, cn, namesz) && !*(cn + namesz))
315 return i;
316 }
317 warnx(_("unknown column: %s"), name);
318 return -1;
319 }
320
321 /* Converts column ID (COL_*) to column sequential number */
322 static int column_id_to_number(int id)
323 {
324 size_t i;
325
326 for (i = 0; i < ncolumns; i++)
327 if (columns[i] == id)
328 return i;
329 return -1;
330 }
331
332 /* Checks for DM prefix in the device name */
333 static int is_dm(const char *name)
334 {
335 return strncmp(name, "dm-", 3) ? 0 : 1;
336 }
337
338 /* Returns full pat to the device node (TODO: what about sysfs_blkdev_get_path()) */
339 static char *get_device_path(struct lsblk_device *dev)
340 {
341 char path[PATH_MAX];
342
343 assert(dev);
344 assert(dev->name);
345
346 if (is_dm(dev->name))
347 return __canonicalize_dm_name(lsblk->sysroot, dev->name);
348
349 snprintf(path, sizeof(path), "/dev/%s", dev->name);
350 sysfs_devname_sys_to_dev(path);
351 return xstrdup(path);
352 }
353
354 static int is_readonly_device(struct lsblk_device *dev)
355 {
356 int fd, ro = 0;
357
358 if (ul_path_scanf(dev->sysfs, "ro", "%d", &ro) == 1)
359 return ro;
360
361 /* fallback if "ro" attribute does not exist */
362 fd = open(dev->filename, O_RDONLY);
363 if (fd != -1) {
364 if (ioctl(fd, BLKROGET, &ro) != 0)
365 ro = 0;
366 close(fd);
367 }
368 return ro;
369 }
370
371 static char *get_scheduler(struct lsblk_device *dev)
372 {
373 char buf[128];
374 char *p, *res = NULL;
375
376 if (ul_path_read_buffer(dev->sysfs, buf, sizeof(buf), "queue/scheduler") == 0)
377 return NULL;
378 p = strchr(buf, '[');
379 if (p) {
380 res = p + 1;
381 p = strchr(res, ']');
382 if (p) {
383 *p = '\0';
384 res = xstrdup(res);
385 } else
386 res = NULL;
387 }
388 return res;
389 }
390
391 static char *get_type(struct lsblk_device *dev)
392 {
393 char *res = NULL, *p;
394
395 if (device_is_partition(dev))
396 return xstrdup("part");
397
398 if (is_dm(dev->name)) {
399 char *dm_uuid = NULL;
400
401 /* The DM_UUID prefix should be set to subsystem owning
402 * the device - LVM, CRYPT, DMRAID, MPATH, PART */
403 if (ul_path_read_string(dev->sysfs, &dm_uuid, "dm/uuid") > 0
404 && dm_uuid) {
405 char *tmp = dm_uuid;
406 char *dm_uuid_prefix = strsep(&tmp, "-");
407
408 if (dm_uuid_prefix) {
409 /* kpartx hack to remove partition number */
410 if (strncasecmp(dm_uuid_prefix, "part", 4) == 0)
411 dm_uuid_prefix[4] = '\0';
412
413 res = xstrdup(dm_uuid_prefix);
414 }
415 }
416
417 free(dm_uuid);
418 if (!res)
419 /* No UUID or no prefix - just mark it as DM device */
420 res = xstrdup("dm");
421
422 } else if (!strncmp(dev->name, "loop", 4)) {
423 res = xstrdup("loop");
424
425 } else if (!strncmp(dev->name, "md", 2)) {
426 char *md_level = NULL;
427
428 ul_path_read_string(dev->sysfs, &md_level, "md/level");
429 res = md_level ? md_level : xstrdup("md");
430
431 } else {
432 const char *type = NULL;
433 int x = 0;
434
435 if (ul_path_read_s32(dev->sysfs, &x, "device/type") == 0)
436 type = blkdev_scsi_type_to_name(x);
437 if (!type)
438 type = "disk";
439 res = xstrdup(type);
440 }
441
442 for (p = res; p && *p; p++)
443 *p = tolower((unsigned char) *p);
444 return res;
445 }
446
447 /* Thanks to lsscsi code for idea of detection logic used here */
448 static char *get_transport(struct lsblk_device *dev)
449 {
450 struct path_cxt *sysfs = dev->sysfs;
451 char *attr = NULL;
452 const char *trans = NULL;
453
454
455 /* SCSI - Serial Peripheral Interface */
456 if (sysfs_blkdev_scsi_host_is(sysfs, "spi"))
457 trans = "spi";
458
459 /* FC/FCoE - Fibre Channel / Fibre Channel over Ethernet */
460 else if (sysfs_blkdev_scsi_host_is(sysfs, "fc")) {
461 attr = sysfs_blkdev_scsi_host_strdup_attribute(sysfs, "fc", "symbolic_name");
462 if (!attr)
463 return NULL;
464 trans = strstr(attr, " over ") ? "fcoe" : "fc";
465 free(attr);
466 }
467
468 /* SAS - Serial Attached SCSI */
469 else if (sysfs_blkdev_scsi_host_is(sysfs, "sas") ||
470 sysfs_blkdev_scsi_has_attribute(sysfs, "sas_device"))
471 trans = "sas";
472
473
474 /* SBP - Serial Bus Protocol (FireWire) */
475 else if (sysfs_blkdev_scsi_has_attribute(sysfs, "ieee1394_id"))
476 trans = "sbp";
477
478 /* iSCSI */
479 else if (sysfs_blkdev_scsi_host_is(sysfs, "iscsi"))
480 trans ="iscsi";
481
482 /* USB - Universal Serial Bus */
483 else if (sysfs_blkdev_scsi_path_contains(sysfs, "usb"))
484 trans = "usb";
485
486 /* ATA, SATA */
487 else if (sysfs_blkdev_scsi_host_is(sysfs, "scsi")) {
488 attr = sysfs_blkdev_scsi_host_strdup_attribute(sysfs, "scsi", "proc_name");
489 if (!attr)
490 return NULL;
491 if (!strncmp(attr, "ahci", 4) || !strncmp(attr, "sata", 4))
492 trans = "sata";
493 else if (strstr(attr, "ata"))
494 trans = "ata";
495 free(attr);
496
497 } else if (strncmp(dev->name, "nvme", 4) == 0)
498 trans = "nvme";
499
500 return trans ? xstrdup(trans) : NULL;
501 }
502
503 static char *get_subsystems(struct lsblk_device *dev)
504 {
505 char path[PATH_MAX];
506 char *sub, *chain, *res = NULL;
507 size_t len = 0, last = 0;
508
509 chain = sysfs_blkdev_get_devchain(dev->sysfs, path, sizeof(path));
510 if (!chain)
511 return NULL;
512
513 while (sysfs_blkdev_next_subsystem(dev->sysfs, chain, &sub) == 0) {
514 size_t sz;
515
516 /* don't create "block:scsi:scsi", but "block:scsi" */
517 if (len && strcmp(res + last, sub) == 0) {
518 free(sub);
519 continue;
520 }
521
522 sz = strlen(sub);
523 res = xrealloc(res, len + sz + 2);
524 if (len)
525 res[len++] = ':';
526
527 memcpy(res + len, sub, sz + 1);
528 last = len;
529 len += sz;
530 free(sub);
531 }
532
533 return res;
534 }
535
536
537 #define is_parsable(_l) (scols_table_is_raw((_l)->table) || \
538 scols_table_is_export((_l)->table) || \
539 scols_table_is_json((_l)->table))
540
541 static char *mk_name(const char *name)
542 {
543 char *p;
544 if (!name)
545 return NULL;
546 if (lsblk->paths)
547 xasprintf(&p, "/dev/%s", name);
548 else
549 p = xstrdup(name);
550 if (p)
551 sysfs_devname_sys_to_dev(p);
552 return p;
553 }
554
555 static char *mk_dm_name(const char *name)
556 {
557 char *p;
558 if (!name)
559 return NULL;
560 if (lsblk->paths)
561 xasprintf(&p, "/dev/mapper/%s", name);
562 else
563 p = xstrdup(name);
564 return p;
565 }
566
567 /* stores data to scols cell userdata (invisible and independent on output)
568 * to make the original values accessible for sort functions
569 */
570 static void set_sortdata_u64(struct libscols_line *ln, int col, uint64_t x)
571 {
572 struct libscols_cell *ce = scols_line_get_cell(ln, col);
573 uint64_t *data;
574
575 if (!ce)
576 return;
577 data = xmalloc(sizeof(uint64_t));
578 *data = x;
579 scols_cell_set_userdata(ce, data);
580 }
581
582 /* do not modify *data on any error */
583 static void str2u64(const char *str, uint64_t *data)
584 {
585 uintmax_t num;
586 char *end = NULL;
587
588 errno = 0;
589 if (str == NULL || *str == '\0')
590 return;
591 num = strtoumax(str, &end, 10);
592
593 if (errno || str == end || (end && *end))
594 return;
595 *data = num;
596 }
597
598 static void unref_sortdata(struct libscols_table *tb)
599 {
600 struct libscols_iter *itr;
601 struct libscols_line *ln;
602
603 if (!tb || !lsblk->sort_col)
604 return;
605 itr = scols_new_iter(SCOLS_ITER_FORWARD);
606 if (!itr)
607 return;
608 while (scols_table_next_line(tb, itr, &ln) == 0) {
609 struct libscols_cell *ce = scols_line_get_column_cell(ln,
610 lsblk->sort_col);
611 void *data = scols_cell_get_userdata(ce);
612 free(data);
613 }
614
615 scols_free_iter(itr);
616 }
617
618 static char *get_vfs_attribute(struct lsblk_device *dev, int id)
619 {
620 char *sizestr;
621 uint64_t vfs_attr = 0;
622 char *mnt;
623
624 if (!dev->fsstat.f_blocks) {
625 mnt = lsblk_device_get_mountpoint(dev);
626 if (!mnt || dev->is_swap)
627 return NULL;
628 if (statvfs(mnt, &dev->fsstat) != 0)
629 return NULL;
630 }
631
632 switch(id) {
633 case COL_FSSIZE:
634 vfs_attr = dev->fsstat.f_frsize * dev->fsstat.f_blocks;
635 break;
636 case COL_FSAVAIL:
637 vfs_attr = dev->fsstat.f_frsize * dev->fsstat.f_bavail;
638 break;
639 case COL_FSUSED:
640 vfs_attr = dev->fsstat.f_frsize * (dev->fsstat.f_blocks - dev->fsstat.f_bfree);
641 break;
642 case COL_FSUSEPERC:
643 if (dev->fsstat.f_blocks == 0)
644 return xstrdup("-");
645
646 xasprintf(&sizestr, "%.0f%%",
647 (double)(dev->fsstat.f_blocks - dev->fsstat.f_bfree) /
648 dev->fsstat.f_blocks * 100);
649 return sizestr;
650 }
651
652 if (!vfs_attr)
653 sizestr = xstrdup("0");
654 else if (lsblk->bytes)
655 xasprintf(&sizestr, "%ju", vfs_attr);
656 else
657 sizestr = size_to_human_string(SIZE_SUFFIX_1LETTER, vfs_attr);
658
659 return sizestr;
660 }
661
662 static struct stat *device_get_stat(struct lsblk_device *dev)
663 {
664 if (!dev->st.st_rdev
665 && stat(dev->filename, &dev->st) != 0)
666 return NULL;
667
668 return &dev->st;
669 }
670
671 static int is_removable_device(struct lsblk_device *dev, struct lsblk_device *parent)
672 {
673 struct path_cxt *pc;
674
675 if (dev->removable != -1)
676 goto done;
677 if (ul_path_scanf(dev->sysfs, "removable", "%d", &dev->removable) == 1)
678 goto done;
679
680 if (parent) {
681 pc = sysfs_blkdev_get_parent(dev->sysfs);
682 if (!pc)
683 goto done;
684
685 /* dev is partition and parent is whole-disk */
686 if (pc == parent->sysfs)
687 dev->removable = is_removable_device(parent, NULL);
688
689 /* parent is something else, use sysfs parent */
690 else if (ul_path_scanf(pc, "removable", "%d", &dev->removable) != 1)
691 dev->removable = 0;
692 }
693 done:
694 if (dev->removable == -1)
695 dev->removable = 0;
696 return dev->removable;
697 }
698
699 static uint64_t device_get_discard_granularity(struct lsblk_device *dev)
700 {
701 if (dev->discard_granularity == (uint64_t) -1
702 && ul_path_read_u64(dev->sysfs, &dev->discard_granularity,
703 "queue/discard_granularity") != 0)
704 dev->discard_granularity = 0;
705
706 return dev->discard_granularity;
707 }
708
709 /*
710 * Generates data (string) for column specified by column ID for specified device. If sortdata
711 * is not NULL then returns number usable to sort the column if the data are available for the
712 * column.
713 */
714 static char *device_get_data(
715 struct lsblk_device *dev, /* device */
716 struct lsblk_device *parent, /* device parent as defined in the tree */
717 int id, /* column ID (COL_*) */
718 uint64_t *sortdata) /* returns sort data as number */
719 {
720 struct lsblk_devprop *prop = NULL;
721 char *str = NULL;
722
723 switch(id) {
724 case COL_NAME:
725 str = dev->dm_name ? mk_dm_name(dev->dm_name) : mk_name(dev->name);
726 break;
727 case COL_KNAME:
728 str = mk_name(dev->name);
729 break;
730 case COL_PKNAME:
731 if (parent)
732 str = mk_name(parent->name);
733 break;
734 case COL_PATH:
735 if (dev->filename)
736 str = xstrdup(dev->filename);
737 break;
738 case COL_OWNER:
739 if (lsblk->sysroot)
740 prop = lsblk_device_get_properties(dev);
741 if (prop && prop->owner) {
742 str = xstrdup(prop->owner);
743 } else {
744 struct stat *st = device_get_stat(dev);
745 struct passwd *pw = st ? getpwuid(st->st_uid) : NULL;
746 if (pw)
747 str = xstrdup(pw->pw_name);
748 }
749 break;
750 case COL_GROUP:
751 if (lsblk->sysroot)
752 prop = lsblk_device_get_properties(dev);
753 if (prop && prop->group) {
754 str = xstrdup(prop->group);
755 } else {
756 struct stat *st = device_get_stat(dev);
757 struct group *gr = st ? getgrgid(st->st_gid) : NULL;
758 if (gr)
759 str = xstrdup(gr->gr_name);
760 }
761 break;
762 case COL_MODE:
763 if (lsblk->sysroot)
764 prop = lsblk_device_get_properties(dev);
765 if (prop && prop->mode) {
766 str = xstrdup(prop->mode);
767 } else {
768 struct stat *st = device_get_stat(dev);
769 char md[11] = { '\0' };
770
771 if (st)
772 str = xstrdup(xstrmode(st->st_mode, md));
773 }
774 break;
775 case COL_MAJMIN:
776 if (is_parsable(lsblk))
777 xasprintf(&str, "%u:%u", dev->maj, dev->min);
778 else
779 xasprintf(&str, "%3u:%-3u", dev->maj, dev->min);
780 if (sortdata)
781 *sortdata = makedev(dev->maj, dev->min);
782 break;
783 case COL_FSTYPE:
784 prop = lsblk_device_get_properties(dev);
785 if (prop && prop->fstype)
786 str = xstrdup(prop->fstype);
787 break;
788 case COL_FSSIZE:
789 case COL_FSAVAIL:
790 case COL_FSUSED:
791 case COL_FSUSEPERC:
792 str = get_vfs_attribute(dev, id);
793 break;
794 case COL_FSVERSION:
795 prop = lsblk_device_get_properties(dev);
796 if (prop && prop->fsversion)
797 str = xstrdup(prop->fsversion);
798 break;
799 case COL_TARGET:
800 {
801 char *s = lsblk_device_get_mountpoint(dev);
802 if (s)
803 str = xstrdup(s);
804 else
805 str = NULL;
806 break;
807 }
808 case COL_LABEL:
809 prop = lsblk_device_get_properties(dev);
810 if (prop && prop->label)
811 str = xstrdup(prop->label);
812 break;
813 case COL_UUID:
814 prop = lsblk_device_get_properties(dev);
815 if (prop && prop->uuid)
816 str = xstrdup(prop->uuid);
817 break;
818 case COL_PTUUID:
819 prop = lsblk_device_get_properties(dev);
820 if (prop && prop->ptuuid)
821 str = xstrdup(prop->ptuuid);
822 break;
823 case COL_PTTYPE:
824 prop = lsblk_device_get_properties(dev);
825 if (prop && prop->pttype)
826 str = xstrdup(prop->pttype);
827 break;
828 case COL_PARTTYPE:
829 prop = lsblk_device_get_properties(dev);
830 if (prop && prop->parttype)
831 str = xstrdup(prop->parttype);
832 break;
833 case COL_PARTTYPENAME:
834 prop = lsblk_device_get_properties(dev);
835 if (prop && prop->parttype && prop->pttype) {
836 const char *x = lsblk_parttype_code_to_string(
837 prop->parttype, prop->pttype);
838 if (x)
839 str = xstrdup(x);
840 }
841 break;
842 case COL_PARTLABEL:
843 prop = lsblk_device_get_properties(dev);
844 if (prop && prop->partlabel)
845 str = xstrdup(prop->partlabel);
846 break;
847 case COL_PARTUUID:
848 prop = lsblk_device_get_properties(dev);
849 if (prop && prop->partuuid)
850 str = xstrdup(prop->partuuid);
851 break;
852 case COL_PARTFLAGS:
853 prop = lsblk_device_get_properties(dev);
854 if (prop && prop->partflags)
855 str = xstrdup(prop->partflags);
856 break;
857 case COL_WWN:
858 prop = lsblk_device_get_properties(dev);
859 if (prop && prop->wwn)
860 str = xstrdup(prop->wwn);
861 break;
862 case COL_RA:
863 ul_path_read_string(dev->sysfs, &str, "queue/read_ahead_kb");
864 if (sortdata)
865 str2u64(str, sortdata);
866 break;
867 case COL_RO:
868 str = xstrdup(is_readonly_device(dev) ? "1" : "0");
869 break;
870 case COL_RM:
871 str = xstrdup(is_removable_device(dev, parent) ? "1" : "0");
872 break;
873 case COL_HOTPLUG:
874 str = sysfs_blkdev_is_hotpluggable(dev->sysfs) ? xstrdup("1") : xstrdup("0");
875 break;
876 case COL_ROTA:
877 ul_path_read_string(dev->sysfs, &str, "queue/rotational");
878 break;
879 case COL_RAND:
880 ul_path_read_string(dev->sysfs, &str, "queue/add_random");
881 break;
882 case COL_MODEL:
883 if (!device_is_partition(dev) && dev->nslaves == 0) {
884 prop = lsblk_device_get_properties(dev);
885 if (prop && prop->model)
886 str = xstrdup(prop->model);
887 else
888 ul_path_read_string(dev->sysfs, &str, "device/model");
889 }
890 break;
891 case COL_SERIAL:
892 if (!device_is_partition(dev) && dev->nslaves == 0) {
893 prop = lsblk_device_get_properties(dev);
894 if (prop && prop->serial)
895 str = xstrdup(prop->serial);
896 else
897 ul_path_read_string(dev->sysfs, &str, "device/serial");
898 }
899 break;
900 case COL_REV:
901 if (!device_is_partition(dev) && dev->nslaves == 0)
902 ul_path_read_string(dev->sysfs, &str, "device/rev");
903 break;
904 case COL_VENDOR:
905 if (!device_is_partition(dev) && dev->nslaves == 0)
906 ul_path_read_string(dev->sysfs, &str, "device/vendor");
907 break;
908 case COL_SIZE:
909 if (lsblk->bytes)
910 xasprintf(&str, "%ju", dev->size);
911 else
912 str = size_to_human_string(SIZE_SUFFIX_1LETTER, dev->size);
913 if (sortdata)
914 *sortdata = dev->size;
915 break;
916 case COL_STATE:
917 if (!device_is_partition(dev) && !dev->dm_name)
918 ul_path_read_string(dev->sysfs, &str, "device/state");
919 else if (dev->dm_name) {
920 int x = 0;
921 if (ul_path_read_s32(dev->sysfs, &x, "dm/suspended") == 0)
922 str = xstrdup(x ? "suspended" : "running");
923 }
924 break;
925 case COL_ALIOFF:
926 ul_path_read_string(dev->sysfs, &str, "alignment_offset");
927 if (sortdata)
928 str2u64(str, sortdata);
929 break;
930 case COL_MINIO:
931 ul_path_read_string(dev->sysfs, &str, "queue/minimum_io_size");
932 if (sortdata)
933 str2u64(str, sortdata);
934 break;
935 case COL_OPTIO:
936 ul_path_read_string(dev->sysfs, &str, "queue/optimal_io_size");
937 if (sortdata)
938 str2u64(str, sortdata);
939 break;
940 case COL_PHYSEC:
941 ul_path_read_string(dev->sysfs, &str, "queue/physical_block_size");
942 if (sortdata)
943 str2u64(str, sortdata);
944 break;
945 case COL_LOGSEC:
946 ul_path_read_string(dev->sysfs, &str, "queue/logical_block_size");
947 if (sortdata)
948 str2u64(str, sortdata);
949 break;
950 case COL_SCHED:
951 str = get_scheduler(dev);
952 break;
953 case COL_RQ_SIZE:
954 ul_path_read_string(dev->sysfs, &str, "queue/nr_requests");
955 if (sortdata)
956 str2u64(str, sortdata);
957 break;
958 case COL_TYPE:
959 str = get_type(dev);
960 break;
961 case COL_HCTL:
962 {
963 int h, c, t, l;
964 if (sysfs_blkdev_scsi_get_hctl(dev->sysfs, &h, &c, &t, &l) == 0)
965 xasprintf(&str, "%d:%d:%d:%d", h, c, t, l);
966 break;
967 }
968 case COL_TRANSPORT:
969 str = get_transport(dev);
970 break;
971 case COL_SUBSYS:
972 str = get_subsystems(dev);
973 break;
974 case COL_DALIGN:
975 if (device_get_discard_granularity(dev) > 0)
976 ul_path_read_string(dev->sysfs, &str, "discard_alignment");
977 if (!str)
978 str = xstrdup("0");
979 if (sortdata)
980 str2u64(str, sortdata);
981 break;
982 case COL_DGRAN:
983 if (lsblk->bytes) {
984 ul_path_read_string(dev->sysfs, &str, "queue/discard_granularity");
985 if (sortdata)
986 str2u64(str, sortdata);
987 } else {
988 uint64_t x = device_get_discard_granularity(dev);
989 str = size_to_human_string(SIZE_SUFFIX_1LETTER, x);
990 if (sortdata)
991 *sortdata = x;
992 }
993 break;
994 case COL_DMAX:
995 if (lsblk->bytes) {
996 ul_path_read_string(dev->sysfs, &str, "queue/discard_max_bytes");
997 if (sortdata)
998 str2u64(str, sortdata);
999 } else {
1000 uint64_t x;
1001 if (ul_path_read_u64(dev->sysfs, &x, "queue/discard_max_bytes") == 0) {
1002 str = size_to_human_string(SIZE_SUFFIX_1LETTER, x);
1003 if (sortdata)
1004 *sortdata = x;
1005 }
1006 }
1007 break;
1008 case COL_DZERO:
1009 if (device_get_discard_granularity(dev) > 0)
1010 ul_path_read_string(dev->sysfs, &str, "queue/discard_zeroes_data");
1011 if (!str)
1012 str = xstrdup("0");
1013 break;
1014 case COL_WSAME:
1015 if (lsblk->bytes) {
1016 ul_path_read_string(dev->sysfs, &str, "queue/write_same_max_bytes");
1017 if (sortdata)
1018 str2u64(str, sortdata);
1019 } else {
1020 uint64_t x;
1021
1022 if (ul_path_read_u64(dev->sysfs, &x, "queue/write_same_max_bytes") == 0) {
1023 str = size_to_human_string(SIZE_SUFFIX_1LETTER, x);
1024 if (sortdata)
1025 *sortdata = x;
1026 }
1027 }
1028 if (!str)
1029 str = xstrdup("0");
1030 break;
1031 case COL_ZONED:
1032 ul_path_read_string(dev->sysfs, &str, "queue/zoned");
1033 break;
1034 case COL_DAX:
1035 ul_path_read_string(dev->sysfs, &str, "queue/dax");
1036 break;
1037 };
1038
1039 return str;
1040 }
1041
1042 /*
1043 * Adds data for all wanted columns about the device to the smartcols table
1044 */
1045 static void device_to_scols(
1046 struct lsblk_device *dev,
1047 struct lsblk_device *parent,
1048 struct libscols_table *tab,
1049 struct libscols_line *parent_line)
1050 {
1051 size_t i;
1052 struct libscols_line *ln;
1053 struct lsblk_iter itr;
1054 struct lsblk_device *child = NULL;
1055 int link_group = 0;
1056
1057
1058 DBG(DEV, ul_debugobj(dev, "add '%s' to scols", dev->name));
1059 ON_DBG(DEV, if (ul_path_isopen_dirfd(dev->sysfs)) ul_debugobj(dev, " %s ---> is open!", dev->name));
1060
1061 if (!parent && dev->wholedisk)
1062 parent = dev->wholedisk;
1063
1064 /* Do not print device more than once on --list if tree order is not requested */
1065 if (!(lsblk->flags & LSBLK_TREE) && !lsblk->force_tree_order && dev->is_printed)
1066 return;
1067
1068 if (lsblk->merge && list_count_entries(&dev->parents) > 1) {
1069 if (!lsblk_device_is_last_parent(dev, parent))
1070 return;
1071 link_group = 1;
1072 }
1073
1074 ln = scols_table_new_line(tab, link_group ? NULL : parent_line);
1075 if (!ln)
1076 err(EXIT_FAILURE, _("failed to allocate output line"));
1077
1078 dev->is_printed = 1;
1079
1080 if (link_group) {
1081 struct lsblk_device *p;
1082 struct libscols_line *gr = parent_line;
1083
1084 /* Merge all my parents to the one group */
1085 DBG(DEV, ul_debugobj(dev, " grouping parents [--merge]"));
1086 lsblk_reset_iter(&itr, LSBLK_ITER_FORWARD);
1087 while (lsblk_device_next_parent(dev, &itr, &p) == 0) {
1088 if (!p->scols_line) {
1089 DBG(DEV, ul_debugobj(dev, " *** ignore '%s' no scols line yet", p->name));
1090 continue;
1091 }
1092 DBG(DEV, ul_debugobj(dev, " group '%s'", p->name));
1093 scols_table_group_lines(tab, p->scols_line, gr, 0);
1094 }
1095
1096 /* Link the group -- this makes group->child connection */
1097 DBG(DEV, ul_debugobj(dev, " linking the group [--merge]"));
1098 scols_line_link_group(ln, gr, 0);
1099 }
1100
1101 /* read column specific data and set it to smartcols table line */
1102 for (i = 0; i < ncolumns; i++) {
1103 char *data;
1104 int id = get_column_id(i);
1105
1106 if (lsblk->sort_id != id)
1107 data = device_get_data(dev, parent, id, NULL);
1108 else {
1109 uint64_t sortdata = (uint64_t) -1;
1110
1111 data = device_get_data(dev, parent, id, &sortdata);
1112 if (data && sortdata != (uint64_t) -1)
1113 set_sortdata_u64(ln, i, sortdata);
1114 }
1115 DBG(DEV, ul_debugobj(dev, " refer data[%zu]=\"%s\"", i, data));
1116 if (data && scols_line_refer_data(ln, i, data))
1117 err(EXIT_FAILURE, _("failed to add output data"));
1118 }
1119
1120 dev->scols_line = ln;
1121
1122 if (dev->npartitions == 0)
1123 /* For partitions we often read from parental whole-disk sysfs,
1124 * otherwise we can close */
1125 ul_path_close_dirfd(dev->sysfs);
1126
1127 lsblk_reset_iter(&itr, LSBLK_ITER_FORWARD);
1128 while (lsblk_device_next_child(dev, &itr, &child) == 0) {
1129 DBG(DEV, ul_debugobj(dev, "%s -> continue to child", dev->name));
1130 device_to_scols(child, dev, tab, ln);
1131 DBG(DEV, ul_debugobj(dev, "%s <- child done", dev->name));
1132 }
1133
1134 /* Let's be careful with number of open files */
1135 ul_path_close_dirfd(dev->sysfs);
1136 }
1137
1138 /*
1139 * Walks on tree and adds one line for each device to the smartcols table
1140 */
1141 static void devtree_to_scols(struct lsblk_devtree *tr, struct libscols_table *tab)
1142 {
1143 struct lsblk_iter itr;
1144 struct lsblk_device *dev = NULL;
1145
1146 lsblk_reset_iter(&itr, LSBLK_ITER_FORWARD);
1147
1148 while (lsblk_devtree_next_root(tr, &itr, &dev) == 0)
1149 device_to_scols(dev, NULL, tab, NULL);
1150 }
1151
1152 /*
1153 * Reads very basic information about the device from sysfs into the device struct
1154 */
1155 static int initialize_device(struct lsblk_device *dev,
1156 struct lsblk_device *wholedisk,
1157 const char *name)
1158 {
1159 dev_t devno;
1160
1161 DBG(DEV, ul_debugobj(dev, "initialize %s [wholedisk=%p %s]",
1162 name, wholedisk, wholedisk ? wholedisk->name : ""));
1163
1164 if (sysfs_devname_is_hidden(lsblk->sysroot, name)) {
1165 DBG(DEV, ul_debugobj(dev, "%s: hidden, ignore", name));
1166 return -1;
1167 }
1168
1169 dev->name = xstrdup(name);
1170
1171 if (wholedisk) {
1172 dev->wholedisk = wholedisk;
1173 lsblk_ref_device(wholedisk);
1174 }
1175
1176 dev->filename = get_device_path(dev);
1177 if (!dev->filename) {
1178 DBG(DEV, ul_debugobj(dev, "%s: failed to get device path", dev->name));
1179 return -1;
1180 }
1181 DBG(DEV, ul_debugobj(dev, "%s: filename=%s", dev->name, dev->filename));
1182
1183 devno = __sysfs_devname_to_devno(lsblk->sysroot, dev->name, wholedisk ? wholedisk->name : NULL);
1184 if (!devno) {
1185 DBG(DEV, ul_debugobj(dev, "%s: unknown device name", dev->name));
1186 return -1;
1187 }
1188
1189 dev->sysfs = ul_new_sysfs_path(devno, wholedisk ? wholedisk->sysfs : NULL, lsblk->sysroot);
1190 if (!dev->sysfs) {
1191 DBG(DEV, ul_debugobj(dev, "%s: failed to initialize sysfs handler", dev->name));
1192 return -1;
1193 }
1194
1195 dev->maj = major(devno);
1196 dev->min = minor(devno);
1197 dev->size = 0;
1198
1199 if (ul_path_read_u64(dev->sysfs, &dev->size, "size") == 0) /* in sectors */
1200 dev->size <<= 9; /* in bytes */
1201
1202 /* Ignore devices of zero size */
1203 if (!lsblk->all_devices && dev->size == 0) {
1204 DBG(DEV, ul_debugobj(dev, "zero size device -- ignore"));
1205 return -1;
1206 }
1207 if (is_dm(dev->name)) {
1208 ul_path_read_string(dev->sysfs, &dev->dm_name, "dm/name");
1209 if (!dev->dm_name) {
1210 DBG(DEV, ul_debugobj(dev, "%s: failed to get dm name", dev->name));
1211 return -1;
1212 }
1213 }
1214
1215 dev->npartitions = sysfs_blkdev_count_partitions(dev->sysfs, dev->name);
1216 dev->nholders = ul_path_count_dirents(dev->sysfs, "holders");
1217 dev->nslaves = ul_path_count_dirents(dev->sysfs, "slaves");
1218
1219 DBG(DEV, ul_debugobj(dev, "%s: npartitions=%d, nholders=%d, nslaves=%d",
1220 dev->name, dev->npartitions, dev->nholders, dev->nslaves));
1221
1222 /* ignore non-SCSI devices */
1223 if (lsblk->scsi && sysfs_blkdev_scsi_get_hctl(dev->sysfs, NULL, NULL, NULL, NULL)) {
1224 DBG(DEV, ul_debugobj(dev, "non-scsi device -- ignore"));
1225 return -1;
1226 }
1227
1228 DBG(DEV, ul_debugobj(dev, "%s: context successfully initialized", dev->name));
1229 return 0;
1230 }
1231
1232 static struct lsblk_device *devtree_get_device_or_new(struct lsblk_devtree *tr,
1233 struct lsblk_device *disk,
1234 const char *name)
1235 {
1236 struct lsblk_device *dev = lsblk_devtree_get_device(tr, name);
1237
1238 if (!dev) {
1239 dev = lsblk_new_device();
1240 if (!dev)
1241 err(EXIT_FAILURE, _("failed to allocate device"));
1242
1243 if (initialize_device(dev, disk, name) != 0) {
1244 lsblk_unref_device(dev);
1245 return NULL;
1246 }
1247 lsblk_devtree_add_device(tr, dev);
1248 lsblk_unref_device(dev); /* keep it referenced by devtree only */
1249 } else
1250 DBG(DEV, ul_debugobj(dev, "%s: already processed", name));
1251
1252 return dev;
1253 }
1254
1255 static int process_dependencies(
1256 struct lsblk_devtree *tr,
1257 struct lsblk_device *dev,
1258 int do_partitions);
1259
1260 /*
1261 * Read devices from whole-disk device into tree
1262 */
1263 static int process_partitions(struct lsblk_devtree *tr, struct lsblk_device *disk)
1264 {
1265 DIR *dir;
1266 struct dirent *d;
1267
1268 assert(disk);
1269
1270 /*
1271 * Do not process further if there are no partitions for
1272 * this device or the device itself is a partition.
1273 */
1274 if (!disk->npartitions || device_is_partition(disk))
1275 return -EINVAL;
1276
1277 DBG(DEV, ul_debugobj(disk, "%s: probe whole-disk for partitions", disk->name));
1278
1279 dir = ul_path_opendir(disk->sysfs, NULL);
1280 if (!dir)
1281 err(EXIT_FAILURE, _("failed to open device directory in sysfs"));
1282
1283 while ((d = xreaddir(dir))) {
1284 struct lsblk_device *part;
1285
1286 if (!(sysfs_blkdev_is_partition_dirent(dir, d, disk->name)))
1287 continue;
1288
1289 DBG(DEV, ul_debugobj(disk, " checking %s", d->d_name));
1290
1291 part = devtree_get_device_or_new(tr, disk, d->d_name);
1292 if (!part)
1293 continue;
1294
1295 if (lsblk_device_new_dependence(disk, part) == 0)
1296 process_dependencies(tr, part, 0);
1297
1298 ul_path_close_dirfd(part->sysfs);
1299 }
1300
1301 /* For partitions we need parental (whole-disk) sysfs directory pretty
1302 * often, so close it now when all is done */
1303 ul_path_close_dirfd(disk->sysfs);
1304
1305 DBG(DEV, ul_debugobj(disk, "probe whole-disk for partitions -- done"));
1306 closedir(dir);
1307 return 0;
1308 }
1309
1310 static char *get_wholedisk_from_partition_dirent(DIR *dir, struct dirent *d, char *buf, size_t bufsz)
1311 {
1312 char *p;
1313 int len;
1314
1315 if ((len = readlinkat(dirfd(dir), d->d_name, buf, bufsz - 1)) < 0)
1316 return 0;
1317
1318 buf[len] = '\0';
1319
1320 /* The path ends with ".../<device>/<partition>" */
1321 p = strrchr(buf, '/');
1322 if (!p)
1323 return NULL;
1324 *p = '\0';
1325
1326 p = strrchr(buf, '/');
1327 if (!p)
1328 return NULL;
1329 p++;
1330
1331 return p;
1332 }
1333
1334 /*
1335 * Reads slaves/holders and partitions for specified device into device tree
1336 */
1337 static int process_dependencies(
1338 struct lsblk_devtree *tr,
1339 struct lsblk_device *dev,
1340 int do_partitions)
1341 {
1342 DIR *dir;
1343 struct dirent *d;
1344 const char *depname;
1345
1346 assert(dev);
1347
1348 if (lsblk->nodeps)
1349 return 0;
1350
1351 /* read all or specified partition */
1352 if (do_partitions && dev->npartitions)
1353 process_partitions(tr, dev);
1354
1355 DBG(DEV, ul_debugobj(dev, "%s: reading dependencies", dev->name));
1356
1357 if (!(lsblk->inverse ? dev->nslaves : dev->nholders)) {
1358 DBG(DEV, ul_debugobj(dev, " ignore (no slaves/holders)"));
1359 return 0;
1360 }
1361
1362 depname = lsblk->inverse ? "slaves" : "holders";
1363 dir = ul_path_opendir(dev->sysfs, depname);
1364 if (!dir) {
1365 DBG(DEV, ul_debugobj(dev, " ignore (no slaves/holders directory)"));
1366 return 0;
1367 }
1368 ul_path_close_dirfd(dev->sysfs);
1369
1370 DBG(DEV, ul_debugobj(dev, " %s: checking for '%s' dependence", dev->name, depname));
1371
1372 while ((d = xreaddir(dir))) {
1373 struct lsblk_device *dep = NULL;
1374 struct lsblk_device *disk = NULL;
1375
1376 /* Is the dependency a partition? */
1377 if (sysfs_blkdev_is_partition_dirent(dir, d, NULL)) {
1378
1379 char buf[PATH_MAX];
1380 char *diskname;
1381
1382 DBG(DEV, ul_debugobj(dev, " %s: dependence is partition", d->d_name));
1383
1384 diskname = get_wholedisk_from_partition_dirent(dir, d, buf, sizeof(buf));
1385 if (diskname)
1386 disk = devtree_get_device_or_new(tr, NULL, diskname);
1387 if (!disk) {
1388 DBG(DEV, ul_debugobj(dev, " ignore no wholedisk ???"));
1389 goto next;
1390 }
1391
1392 dep = devtree_get_device_or_new(tr, disk, d->d_name);
1393 if (!dep)
1394 goto next;
1395
1396 if (lsblk_device_new_dependence(dev, dep) == 0)
1397 process_dependencies(tr, dep, 1);
1398
1399 if (lsblk->inverse
1400 && lsblk_device_new_dependence(dep, disk) == 0)
1401 process_dependencies(tr, disk, 0);
1402 }
1403 /* The dependency is a whole device. */
1404 else {
1405 DBG(DEV, ul_debugobj(dev, " %s: %s: dependence is whole-disk",
1406 dev->name, d->d_name));
1407
1408 dep = devtree_get_device_or_new(tr, NULL, d->d_name);
1409 if (!dep)
1410 goto next;
1411
1412 if (lsblk_device_new_dependence(dev, dep) == 0)
1413 /* For inverse tree we don't want to show partitions
1414 * if the dependence is on whole-disk */
1415 process_dependencies(tr, dep, lsblk->inverse ? 0 : 1);
1416 }
1417 next:
1418 if (dep && dep->sysfs)
1419 ul_path_close_dirfd(dep->sysfs);
1420 if (disk && disk->sysfs)
1421 ul_path_close_dirfd(disk->sysfs);
1422 }
1423 closedir(dir);
1424
1425 DBG(DEV, ul_debugobj(dev, "%s: checking for '%s' -- done", dev->name, depname));
1426 return 0;
1427 }
1428
1429 /*
1430 * Defines the device as root node in the device tree and walks on all dependencies of the device.
1431 */
1432 static int __process_one_device(struct lsblk_devtree *tr, char *devname, dev_t devno)
1433 {
1434 struct lsblk_device *dev = NULL;
1435 struct lsblk_device *disk = NULL;
1436 char buf[PATH_MAX + 1], *name = NULL, *diskname = NULL;
1437 int real_part = 0, rc = -EINVAL;
1438
1439 if (devno == 0 && devname) {
1440 struct stat st;
1441
1442 DBG(DEV, ul_debug("%s: reading alone device", devname));
1443
1444 if (stat(devname, &st) || !S_ISBLK(st.st_mode)) {
1445 warnx(_("%s: not a block device"), devname);
1446 goto leave;
1447 }
1448 devno = st.st_rdev;
1449 } else if (devno) {
1450 DBG(DEV, ul_debug("%d:%d: reading alone device", major(devno), minor(devno)));
1451 } else {
1452 assert(devno || devname);
1453 return -EINVAL;
1454 }
1455
1456 /* TODO: sysfs_devno_to_devname() internally initializes path_cxt, it
1457 * would be better to use ul_new_sysfs_path() + sysfs_blkdev_get_name()
1458 * and reuse path_cxt for initialize_device()
1459 */
1460 name = sysfs_devno_to_devname(devno, buf, sizeof(buf));
1461 if (!name) {
1462 if (devname)
1463 warn(_("%s: failed to get sysfs name"), devname);
1464 goto leave;
1465 }
1466 name = xstrdup(name);
1467
1468 if (!strncmp(name, "dm-", 3)) {
1469 /* dm mapping is never a real partition! */
1470 real_part = 0;
1471 } else {
1472 dev_t diskno = 0;
1473
1474 if (blkid_devno_to_wholedisk(devno, buf, sizeof(buf), &diskno)) {
1475 warn(_("%s: failed to get whole-disk device number"), name);
1476 goto leave;
1477 }
1478 diskname = buf;
1479 real_part = devno != diskno;
1480 }
1481
1482 if (!real_part) {
1483 /*
1484 * Device is not a partition.
1485 */
1486 DBG(DEV, ul_debug(" non-partition"));
1487
1488 dev = devtree_get_device_or_new(tr, NULL, name);
1489 if (!dev)
1490 goto leave;
1491
1492 lsblk_devtree_add_root(tr, dev);
1493 process_dependencies(tr, dev, !lsblk->inverse);
1494 } else {
1495 /*
1496 * Partition, read sysfs name of the disk device
1497 */
1498 DBG(DEV, ul_debug(" partition"));
1499
1500 disk = devtree_get_device_or_new(tr, NULL, diskname);
1501 if (!disk)
1502 goto leave;
1503
1504 dev = devtree_get_device_or_new(tr, disk, name);
1505 if (!dev)
1506 goto leave;
1507
1508 lsblk_devtree_add_root(tr, dev);
1509 process_dependencies(tr, dev, 1);
1510
1511 if (lsblk->inverse
1512 && lsblk_device_new_dependence(dev, disk) == 0)
1513 process_dependencies(tr, disk, 0);
1514 else
1515 ul_path_close_dirfd(disk->sysfs);
1516 }
1517
1518 rc = 0;
1519 leave:
1520 if (dev && dev->sysfs)
1521 ul_path_close_dirfd(dev->sysfs);
1522 if (disk && disk->sysfs)
1523 ul_path_close_dirfd(disk->sysfs);
1524 free(name);
1525 return rc;
1526 }
1527
1528 static int process_one_device(struct lsblk_devtree *tr, char *devname)
1529 {
1530 assert(devname);
1531 return __process_one_device(tr, devname, 0);
1532 }
1533
1534 /*
1535 * The /sys/block contains only root devices, and no partitions. It seems more
1536 * simple to scan /sys/dev/block where are all devices without exceptions to get
1537 * top-level devices for the reverse tree.
1538 */
1539 static int process_all_devices_inverse(struct lsblk_devtree *tr)
1540 {
1541 DIR *dir;
1542 struct dirent *d;
1543 struct path_cxt *pc = ul_new_path(_PATH_SYS_DEVBLOCK);
1544
1545 assert(lsblk->inverse);
1546
1547 if (!pc)
1548 err(EXIT_FAILURE, _("failed to allocate /sys handler"));
1549
1550 ul_path_set_prefix(pc, lsblk->sysroot);
1551 dir = ul_path_opendir(pc, NULL);
1552 if (!dir)
1553 goto done;
1554
1555 DBG(DEV, ul_debug("iterate on " _PATH_SYS_DEVBLOCK));
1556
1557 while ((d = xreaddir(dir))) {
1558 dev_t devno;
1559 int maj, min;
1560
1561 DBG(DEV, ul_debug(" %s dentry", d->d_name));
1562
1563 if (sscanf(d->d_name, "%d:%d", &maj, &min) != 2)
1564 continue;
1565 devno = makedev(maj, min);
1566
1567 if (is_maj_excluded(maj) || !is_maj_included(maj))
1568 continue;
1569 if (ul_path_countf_dirents(pc, "%s/holders", d->d_name) != 0)
1570 continue;
1571 if (sysfs_devno_count_partitions(devno) != 0)
1572 continue;
1573 __process_one_device(tr, NULL, devno);
1574 }
1575
1576 closedir(dir);
1577 done:
1578 ul_unref_path(pc);
1579 DBG(DEV, ul_debug("iterate on " _PATH_SYS_DEVBLOCK " -- done"));
1580 return 0;
1581 }
1582
1583 /*
1584 * Reads root nodes (devices) from /sys/block into devices tree
1585 */
1586 static int process_all_devices(struct lsblk_devtree *tr)
1587 {
1588 DIR *dir;
1589 struct dirent *d;
1590 struct path_cxt *pc;
1591
1592 assert(lsblk->inverse == 0);
1593
1594 pc = ul_new_path(_PATH_SYS_BLOCK);
1595 if (!pc)
1596 err(EXIT_FAILURE, _("failed to allocate /sys handler"));
1597
1598 ul_path_set_prefix(pc, lsblk->sysroot);
1599 dir = ul_path_opendir(pc, NULL);
1600 if (!dir)
1601 goto done;
1602
1603 DBG(DEV, ul_debug("iterate on " _PATH_SYS_BLOCK));
1604
1605 while ((d = xreaddir(dir))) {
1606 struct lsblk_device *dev = NULL;
1607
1608 DBG(DEV, ul_debug(" %s dentry", d->d_name));
1609 dev = devtree_get_device_or_new(tr, NULL, d->d_name);
1610 if (!dev)
1611 goto next;
1612
1613 /* remove unwanted devices */
1614 if (is_maj_excluded(dev->maj) || !is_maj_included(dev->maj)) {
1615 DBG(DEV, ul_debug(" %s: ignore (by filter)", d->d_name));
1616 lsblk_devtree_remove_device(tr, dev);
1617 dev = NULL;
1618 goto next;
1619 }
1620
1621 if (dev->nslaves) {
1622 DBG(DEV, ul_debug(" %s: ignore (in-middle)", d->d_name));
1623 goto next;
1624 }
1625
1626 lsblk_devtree_add_root(tr, dev);
1627 process_dependencies(tr, dev, 1);
1628 next:
1629 /* Let's be careful with number of open files */
1630 if (dev && dev->sysfs)
1631 ul_path_close_dirfd(dev->sysfs);
1632 }
1633
1634 closedir(dir);
1635 done:
1636 ul_unref_path(pc);
1637 DBG(DEV, ul_debug("iterate on " _PATH_SYS_BLOCK " -- done"));
1638 return 0;
1639 }
1640
1641 /*
1642 * Parses major numbers as specified on lsblk command line
1643 */
1644 static void parse_excludes(const char *str0)
1645 {
1646 const char *str = str0;
1647
1648 while (str && *str) {
1649 char *end = NULL;
1650 unsigned long n;
1651
1652 errno = 0;
1653 n = strtoul(str, &end, 10);
1654
1655 if (end == str || (end && *end && *end != ','))
1656 errx(EXIT_FAILURE, _("failed to parse list '%s'"), str0);
1657 if (errno != 0 && (n == ULONG_MAX || n == 0))
1658 err(EXIT_FAILURE, _("failed to parse list '%s'"), str0);
1659 excludes[nexcludes++] = n;
1660
1661 if (nexcludes == ARRAY_SIZE(excludes))
1662 /* TRANSLATORS: The standard value for %d is 256. */
1663 errx(EXIT_FAILURE, _("the list of excluded devices is "
1664 "too large (limit is %d devices)"),
1665 (int)ARRAY_SIZE(excludes));
1666
1667 str = end && *end ? end + 1 : NULL;
1668 }
1669 }
1670
1671 /*
1672 * Parses major numbers as specified on lsblk command line
1673 * (TODO: what about refactor and merge parse_excludes() and parse_includes().)
1674 */
1675 static void parse_includes(const char *str0)
1676 {
1677 const char *str = str0;
1678
1679 while (str && *str) {
1680 char *end = NULL;
1681 unsigned long n;
1682
1683 errno = 0;
1684 n = strtoul(str, &end, 10);
1685
1686 if (end == str || (end && *end && *end != ','))
1687 errx(EXIT_FAILURE, _("failed to parse list '%s'"), str0);
1688 if (errno != 0 && (n == ULONG_MAX || n == 0))
1689 err(EXIT_FAILURE, _("failed to parse list '%s'"), str0);
1690 includes[nincludes++] = n;
1691
1692 if (nincludes == ARRAY_SIZE(includes))
1693 /* TRANSLATORS: The standard value for %d is 256. */
1694 errx(EXIT_FAILURE, _("the list of included devices is "
1695 "too large (limit is %d devices)"),
1696 (int)ARRAY_SIZE(includes));
1697 str = end && *end ? end + 1 : NULL;
1698 }
1699 }
1700
1701 /*
1702 * see set_sortdata_u64() and columns initialization in main()
1703 */
1704 static int cmp_u64_cells(struct libscols_cell *a,
1705 struct libscols_cell *b,
1706 __attribute__((__unused__)) void *data)
1707 {
1708 uint64_t *adata = (uint64_t *) scols_cell_get_userdata(a),
1709 *bdata = (uint64_t *) scols_cell_get_userdata(b);
1710
1711 if (adata == NULL && bdata == NULL)
1712 return 0;
1713 if (adata == NULL)
1714 return -1;
1715 if (bdata == NULL)
1716 return 1;
1717 return *adata == *bdata ? 0 : *adata >= *bdata ? 1 : -1;
1718 }
1719
1720 static void device_set_dedupkey(
1721 struct lsblk_device *dev,
1722 struct lsblk_device *parent,
1723 int id)
1724 {
1725 struct lsblk_iter itr;
1726 struct lsblk_device *child = NULL;
1727
1728 dev->dedupkey = device_get_data(dev, parent, id, NULL);
1729 if (dev->dedupkey)
1730 DBG(DEV, ul_debugobj(dev, "%s: de-duplication key: %s", dev->name, dev->dedupkey));
1731
1732 if (dev->npartitions == 0)
1733 /* For partitions we often read from parental whole-disk sysfs,
1734 * otherwise we can close */
1735 ul_path_close_dirfd(dev->sysfs);
1736
1737 lsblk_reset_iter(&itr, LSBLK_ITER_FORWARD);
1738
1739 while (lsblk_device_next_child(dev, &itr, &child) == 0)
1740 device_set_dedupkey(child, dev, id);
1741
1742 /* Let's be careful with number of open files */
1743 ul_path_close_dirfd(dev->sysfs);
1744 }
1745
1746 static void devtree_set_dedupkeys(struct lsblk_devtree *tr, int id)
1747 {
1748 struct lsblk_iter itr;
1749 struct lsblk_device *dev = NULL;
1750
1751 lsblk_reset_iter(&itr, LSBLK_ITER_FORWARD);
1752
1753 while (lsblk_devtree_next_root(tr, &itr, &dev) == 0)
1754 device_set_dedupkey(dev, NULL, id);
1755 }
1756
1757 static void __attribute__((__noreturn__)) usage(void)
1758 {
1759 FILE *out = stdout;
1760 size_t i;
1761
1762 fputs(USAGE_HEADER, out);
1763 fprintf(out, _(" %s [options] [<device> ...]\n"), program_invocation_short_name);
1764
1765 fputs(USAGE_SEPARATOR, out);
1766 fputs(_("List information about block devices.\n"), out);
1767
1768 fputs(USAGE_OPTIONS, out);
1769 fputs(_(" -D, --discard print discard capabilities\n"), out);
1770 fputs(_(" -E, --dedup <column> de-duplicate output by <column>\n"), out);
1771 fputs(_(" -I, --include <list> show only devices with specified major numbers\n"), out);
1772 fputs(_(" -J, --json use JSON output format\n"), out);
1773 fputs(_(" -O, --output-all output all columns\n"), out);
1774 fputs(_(" -P, --pairs use key=\"value\" output format\n"), out);
1775 fputs(_(" -S, --scsi output info about SCSI devices\n"), out);
1776 fputs(_(" -T, --tree[=<column>] use tree format output\n"), out);
1777 fputs(_(" -a, --all print all devices\n"), out);
1778 fputs(_(" -b, --bytes print SIZE in bytes rather than in human readable format\n"), out);
1779 fputs(_(" -d, --nodeps don't print slaves or holders\n"), out);
1780 fputs(_(" -e, --exclude <list> exclude devices by major number (default: RAM disks)\n"), out);
1781 fputs(_(" -f, --fs output info about filesystems\n"), out);
1782 fputs(_(" -i, --ascii use ascii characters only\n"), out);
1783 fputs(_(" -l, --list use list format output\n"), out);
1784 fputs(_(" -M, --merge group parents of sub-trees (usable for RAIDs, Multi-path)\n"), out);
1785 fputs(_(" -m, --perms output info about permissions\n"), out);
1786 fputs(_(" -n, --noheadings don't print headings\n"), out);
1787 fputs(_(" -o, --output <list> output columns\n"), out);
1788 fputs(_(" -p, --paths print complete device path\n"), out);
1789 fputs(_(" -r, --raw use raw output format\n"), out);
1790 fputs(_(" -s, --inverse inverse dependencies\n"), out);
1791 fputs(_(" -t, --topology output info about topology\n"), out);
1792 fputs(_(" -z, --zoned print zone model\n"), out);
1793 fputs(_(" -x, --sort <column> sort output by <column>\n"), out);
1794 fputs(_(" --sysroot <dir> use specified directory as system root\n"), out);
1795 fputs(USAGE_SEPARATOR, out);
1796 printf(USAGE_HELP_OPTIONS(22));
1797
1798 fprintf(out, USAGE_COLUMNS);
1799
1800 for (i = 0; i < ARRAY_SIZE(infos); i++)
1801 fprintf(out, " %11s %s\n", infos[i].name, _(infos[i].help));
1802
1803 printf(USAGE_MAN_TAIL("lsblk(8)"));
1804
1805 exit(EXIT_SUCCESS);
1806 }
1807
1808 static void check_sysdevblock(void)
1809 {
1810 if (access(_PATH_SYS_DEVBLOCK, R_OK) != 0)
1811 err(EXIT_FAILURE, _("failed to access sysfs directory: %s"),
1812 _PATH_SYS_DEVBLOCK);
1813 }
1814
1815 int main(int argc, char *argv[])
1816 {
1817 struct lsblk _ls = {
1818 .sort_id = -1,
1819 .dedup_id = -1,
1820 .flags = LSBLK_TREE,
1821 .tree_id = COL_NAME
1822 };
1823 struct lsblk_devtree *tr = NULL;
1824 int c, status = EXIT_FAILURE;
1825 char *outarg = NULL;
1826 size_t i;
1827 int force_tree = 0, has_tree_col = 0;
1828
1829 enum {
1830 OPT_SYSROOT = CHAR_MAX + 1
1831 };
1832
1833 static const struct option longopts[] = {
1834 { "all", no_argument, NULL, 'a' },
1835 { "bytes", no_argument, NULL, 'b' },
1836 { "nodeps", no_argument, NULL, 'd' },
1837 { "discard", no_argument, NULL, 'D' },
1838 { "dedup", required_argument, NULL, 'E' },
1839 { "zoned", no_argument, NULL, 'z' },
1840 { "help", no_argument, NULL, 'h' },
1841 { "json", no_argument, NULL, 'J' },
1842 { "output", required_argument, NULL, 'o' },
1843 { "output-all", no_argument, NULL, 'O' },
1844 { "merge", no_argument, NULL, 'M' },
1845 { "perms", no_argument, NULL, 'm' },
1846 { "noheadings", no_argument, NULL, 'n' },
1847 { "list", no_argument, NULL, 'l' },
1848 { "ascii", no_argument, NULL, 'i' },
1849 { "raw", no_argument, NULL, 'r' },
1850 { "inverse", no_argument, NULL, 's' },
1851 { "fs", no_argument, NULL, 'f' },
1852 { "exclude", required_argument, NULL, 'e' },
1853 { "include", required_argument, NULL, 'I' },
1854 { "topology", no_argument, NULL, 't' },
1855 { "paths", no_argument, NULL, 'p' },
1856 { "pairs", no_argument, NULL, 'P' },
1857 { "scsi", no_argument, NULL, 'S' },
1858 { "sort", required_argument, NULL, 'x' },
1859 { "sysroot", required_argument, NULL, OPT_SYSROOT },
1860 { "tree", optional_argument, NULL, 'T' },
1861 { "version", no_argument, NULL, 'V' },
1862 { NULL, 0, NULL, 0 },
1863 };
1864
1865 static const ul_excl_t excl[] = { /* rows and cols in ASCII order */
1866 { 'D','O' },
1867 { 'I','e' },
1868 { 'J', 'P', 'r' },
1869 { 'O','S' },
1870 { 'O','f' },
1871 { 'O','m' },
1872 { 'O','o' },
1873 { 'O','t' },
1874 { 'P','T', 'l','r' },
1875 { 0 }
1876 };
1877 int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT;
1878
1879 setlocale(LC_ALL, "");
1880 bindtextdomain(PACKAGE, LOCALEDIR);
1881 textdomain(PACKAGE);
1882 close_stdout_atexit();
1883
1884 lsblk = &_ls;
1885
1886 lsblk_init_debug();
1887
1888 while((c = getopt_long(argc, argv,
1889 "abdDzE:e:fhJlnMmo:OpPiI:rstVST::x:", longopts, NULL)) != -1) {
1890
1891 err_exclusive_options(c, longopts, excl, excl_st);
1892
1893 switch(c) {
1894 case 'a':
1895 lsblk->all_devices = 1;
1896 break;
1897 case 'b':
1898 lsblk->bytes = 1;
1899 break;
1900 case 'd':
1901 lsblk->nodeps = 1;
1902 break;
1903 case 'D':
1904 add_uniq_column(COL_NAME);
1905 add_uniq_column(COL_DALIGN);
1906 add_uniq_column(COL_DGRAN);
1907 add_uniq_column(COL_DMAX);
1908 add_uniq_column(COL_DZERO);
1909 break;
1910 case 'z':
1911 add_uniq_column(COL_NAME);
1912 add_uniq_column(COL_ZONED);
1913 break;
1914 case 'e':
1915 parse_excludes(optarg);
1916 break;
1917 case 'J':
1918 lsblk->flags |= LSBLK_JSON;
1919 break;
1920 case 'l':
1921 lsblk->flags &= ~LSBLK_TREE; /* disable the default */
1922 break;
1923 case 'M':
1924 lsblk->merge = 1;
1925 break;
1926 case 'n':
1927 lsblk->flags |= LSBLK_NOHEADINGS;
1928 break;
1929 case 'o':
1930 outarg = optarg;
1931 break;
1932 case 'O':
1933 for (ncolumns = 0 ; ncolumns < ARRAY_SIZE(infos); ncolumns++)
1934 columns[ncolumns] = ncolumns;
1935 break;
1936 case 'p':
1937 lsblk->paths = 1;
1938 break;
1939 case 'P':
1940 lsblk->flags |= LSBLK_EXPORT;
1941 lsblk->flags &= ~LSBLK_TREE; /* disable the default */
1942 break;
1943 case 'i':
1944 lsblk->flags |= LSBLK_ASCII;
1945 break;
1946 case 'I':
1947 parse_includes(optarg);
1948 break;
1949 case 'r':
1950 lsblk->flags &= ~LSBLK_TREE; /* disable the default */
1951 lsblk->flags |= LSBLK_RAW; /* enable raw */
1952 break;
1953 case 's':
1954 lsblk->inverse = 1;
1955 break;
1956 case 'f':
1957 add_uniq_column(COL_NAME);
1958 add_uniq_column(COL_FSTYPE);
1959 add_uniq_column(COL_FSVERSION);
1960 add_uniq_column(COL_LABEL);
1961 add_uniq_column(COL_UUID);
1962 add_uniq_column(COL_FSAVAIL);
1963 add_uniq_column(COL_FSUSEPERC);
1964 add_uniq_column(COL_TARGET);
1965 break;
1966 case 'm':
1967 add_uniq_column(COL_NAME);
1968 add_uniq_column(COL_SIZE);
1969 add_uniq_column(COL_OWNER);
1970 add_uniq_column(COL_GROUP);
1971 add_uniq_column(COL_MODE);
1972 break;
1973 case 't':
1974 add_uniq_column(COL_NAME);
1975 add_uniq_column(COL_ALIOFF);
1976 add_uniq_column(COL_MINIO);
1977 add_uniq_column(COL_OPTIO);
1978 add_uniq_column(COL_PHYSEC);
1979 add_uniq_column(COL_LOGSEC);
1980 add_uniq_column(COL_ROTA);
1981 add_uniq_column(COL_SCHED);
1982 add_uniq_column(COL_RQ_SIZE);
1983 add_uniq_column(COL_RA);
1984 add_uniq_column(COL_WSAME);
1985 break;
1986 case 'S':
1987 lsblk->nodeps = 1;
1988 lsblk->scsi = 1;
1989 add_uniq_column(COL_NAME);
1990 add_uniq_column(COL_HCTL);
1991 add_uniq_column(COL_TYPE);
1992 add_uniq_column(COL_VENDOR);
1993 add_uniq_column(COL_MODEL);
1994 add_uniq_column(COL_REV);
1995 add_uniq_column(COL_SERIAL);
1996 add_uniq_column(COL_TRANSPORT);
1997 break;
1998 case 'T':
1999 force_tree = 1;
2000 if (optarg) {
2001 if (*optarg == '=')
2002 optarg++;
2003 lsblk->tree_id = column_name_to_id(optarg, strlen(optarg));
2004 }
2005 break;
2006 case OPT_SYSROOT:
2007 lsblk->sysroot = optarg;
2008 break;
2009 case 'E':
2010 lsblk->dedup_id = column_name_to_id(optarg, strlen(optarg));
2011 if (lsblk->dedup_id >= 0)
2012 break;
2013 errtryhelp(EXIT_FAILURE);
2014 break;
2015 case 'x':
2016 lsblk->flags &= ~LSBLK_TREE; /* disable the default */
2017 lsblk->sort_id = column_name_to_id(optarg, strlen(optarg));
2018 if (lsblk->sort_id >= 0)
2019 break;
2020 errtryhelp(EXIT_FAILURE);
2021 break;
2022
2023 case 'h':
2024 usage();
2025 case 'V':
2026 print_version(EXIT_SUCCESS);
2027 default:
2028 errtryhelp(EXIT_FAILURE);
2029 }
2030 }
2031
2032 if (force_tree)
2033 lsblk->flags |= LSBLK_TREE;
2034
2035 check_sysdevblock();
2036
2037 if (!ncolumns) {
2038 add_column(COL_NAME);
2039 add_column(COL_MAJMIN);
2040 add_column(COL_RM);
2041 add_column(COL_SIZE);
2042 add_column(COL_RO);
2043 add_column(COL_TYPE);
2044 add_column(COL_TARGET);
2045 }
2046
2047 if (outarg && string_add_to_idarray(outarg, columns, ARRAY_SIZE(columns),
2048 &ncolumns, column_name_to_id) < 0)
2049 return EXIT_FAILURE;
2050
2051 if (lsblk->all_devices == 0 && nexcludes == 0 && nincludes == 0)
2052 excludes[nexcludes++] = 1; /* default: ignore RAM disks */
2053
2054 if (lsblk->sort_id < 0)
2055 /* Since Linux 4.8 we have sort devices by default, because
2056 * /sys is no more sorted */
2057 lsblk->sort_id = COL_MAJMIN;
2058
2059 /* For --{inverse,raw,pairs} --list we still follow parent->child relation */
2060 if (!(lsblk->flags & LSBLK_TREE)
2061 && (lsblk->inverse || lsblk->flags & LSBLK_EXPORT || lsblk->flags & LSBLK_RAW))
2062 lsblk->force_tree_order = 1;
2063
2064 if (lsblk->sort_id >= 0 && column_id_to_number(lsblk->sort_id) < 0) {
2065 /* the sort column is not between output columns -- add as hidden */
2066 add_column(lsblk->sort_id);
2067 lsblk->sort_hidden = 1;
2068 }
2069
2070 if (lsblk->dedup_id >= 0 && column_id_to_number(lsblk->dedup_id) < 0) {
2071 /* the deduplication column is not between output columns -- add as hidden */
2072 add_column(lsblk->dedup_id);
2073 lsblk->dedup_hidden = 1;
2074 }
2075
2076 lsblk_mnt_init();
2077 scols_init_debug(0);
2078 ul_path_init_debug();
2079
2080 /*
2081 * initialize output columns
2082 */
2083 if (!(lsblk->table = scols_new_table()))
2084 errx(EXIT_FAILURE, _("failed to allocate output table"));
2085 scols_table_enable_raw(lsblk->table, !!(lsblk->flags & LSBLK_RAW));
2086 scols_table_enable_export(lsblk->table, !!(lsblk->flags & LSBLK_EXPORT));
2087 scols_table_enable_ascii(lsblk->table, !!(lsblk->flags & LSBLK_ASCII));
2088 scols_table_enable_json(lsblk->table, !!(lsblk->flags & LSBLK_JSON));
2089 scols_table_enable_noheadings(lsblk->table, !!(lsblk->flags & LSBLK_NOHEADINGS));
2090
2091 if (lsblk->flags & LSBLK_JSON)
2092 scols_table_set_name(lsblk->table, "blockdevices");
2093
2094 for (i = 0; i < ncolumns; i++) {
2095 struct colinfo *ci = get_column_info(i);
2096 struct libscols_column *cl;
2097 int id = get_column_id(i), fl = ci->flags;
2098
2099 if ((lsblk->flags & LSBLK_TREE)
2100 && has_tree_col == 0
2101 && id == lsblk->tree_id) {
2102 fl |= SCOLS_FL_TREE;
2103 fl &= ~SCOLS_FL_RIGHT;
2104 has_tree_col = 1;
2105 }
2106
2107 if (lsblk->sort_hidden && lsblk->sort_id == id)
2108 fl |= SCOLS_FL_HIDDEN;
2109 if (lsblk->dedup_hidden && lsblk->dedup_id == id)
2110 fl |= SCOLS_FL_HIDDEN;
2111
2112 if (force_tree
2113 && lsblk->flags & LSBLK_JSON
2114 && has_tree_col == 0
2115 && i + 1 == ncolumns)
2116 /* The "--tree --json" specified, but no column with
2117 * SCOLS_FL_TREE yet; force it for the last column
2118 */
2119 fl |= SCOLS_FL_TREE;
2120
2121 cl = scols_table_new_column(lsblk->table, ci->name, ci->whint, fl);
2122 if (!cl) {
2123 warn(_("failed to allocate output column"));
2124 goto leave;
2125 }
2126 if (!lsblk->sort_col && lsblk->sort_id == id) {
2127 lsblk->sort_col = cl;
2128 scols_column_set_cmpfunc(cl,
2129 ci->type == COLTYPE_NUM ? cmp_u64_cells :
2130 ci->type == COLTYPE_SIZE ? cmp_u64_cells :
2131 ci->type == COLTYPE_SORTNUM ? cmp_u64_cells : scols_cmpstr_cells,
2132 NULL);
2133 }
2134 if (lsblk->flags & LSBLK_JSON) {
2135 switch (ci->type) {
2136 case COLTYPE_SIZE:
2137 if (!lsblk->bytes)
2138 break;
2139 /* fallthrough */
2140 case COLTYPE_NUM:
2141 scols_column_set_json_type(cl, SCOLS_JSON_NUMBER);
2142 break;
2143 case COLTYPE_BOOL:
2144 scols_column_set_json_type(cl, SCOLS_JSON_BOOLEAN);
2145 break;
2146 default:
2147 scols_column_set_json_type(cl, SCOLS_JSON_STRING);
2148 break;
2149 }
2150 }
2151 }
2152
2153 tr = lsblk_new_devtree();
2154 if (!tr)
2155 err(EXIT_FAILURE, _("failed to allocate device tree"));
2156
2157 if (optind == argc) {
2158 int rc = lsblk->inverse ?
2159 process_all_devices_inverse(tr) :
2160 process_all_devices(tr);
2161
2162 status = rc == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
2163 } else {
2164 int cnt = 0, cnt_err = 0;
2165
2166 while (optind < argc) {
2167 if (process_one_device(tr, argv[optind++]) != 0)
2168 cnt_err++;
2169 cnt++;
2170 }
2171 status = cnt == 0 ? EXIT_FAILURE : /* nothing */
2172 cnt == cnt_err ? LSBLK_EXIT_ALLFAILED :/* all failed */
2173 cnt_err ? LSBLK_EXIT_SOMEOK : /* some ok */
2174 EXIT_SUCCESS; /* all success */
2175 }
2176
2177 if (lsblk->dedup_id > -1) {
2178 devtree_set_dedupkeys(tr, lsblk->dedup_id);
2179 lsblk_devtree_deduplicate_devices(tr);
2180 }
2181
2182 devtree_to_scols(tr, lsblk->table);
2183
2184 if (lsblk->sort_col)
2185 scols_sort_table(lsblk->table, lsblk->sort_col);
2186 if (lsblk->force_tree_order)
2187 scols_sort_table_by_tree(lsblk->table);
2188
2189 scols_print_table(lsblk->table);
2190
2191 leave:
2192 if (lsblk->sort_col)
2193 unref_sortdata(lsblk->table);
2194
2195 scols_unref_table(lsblk->table);
2196
2197 lsblk_mnt_deinit();
2198 lsblk_properties_deinit();
2199 lsblk_unref_devtree(tr);
2200
2201 return status;
2202 }
Unnamed repository; edit this file 'description' to name the repository.