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