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