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Commit | Line | Data |
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04fd7a9f KZ |
1 | /* |
2 | * findmnt(8) | |
3 | * | |
8449f2cb | 4 | * Copyright (C) 2010-2015 Red Hat, Inc. All rights reserved. |
04fd7a9f KZ |
5 | * Written by Karel Zak <kzak@redhat.com> |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it would be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
7cebf0bb SK |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; if not, write to the Free Software Foundation, Inc., | |
19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
04fd7a9f | 20 | */ |
04fd7a9f KZ |
21 | #include <stdio.h> |
22 | #include <stdlib.h> | |
23 | #include <errno.h> | |
04fd7a9f KZ |
24 | #include <unistd.h> |
25 | #include <getopt.h> | |
26 | #include <string.h> | |
9d67679b | 27 | #include <termios.h> |
9d67679b | 28 | #ifdef HAVE_SYS_IOCTL_H |
e346233e | 29 | # include <sys/ioctl.h> |
9d67679b | 30 | #endif |
9d67679b | 31 | #include <assert.h> |
32e5466a | 32 | #include <poll.h> |
a85ef33b DR |
33 | #include <sys/statvfs.h> |
34 | #include <sys/types.h> | |
e346233e KZ |
35 | #ifdef HAVE_LIBUDEV |
36 | # include <libudev.h> | |
37 | #endif | |
2a1f429a | 38 | #include <libmount.h> |
218a3a94 | 39 | #include <libsmartcols.h> |
fdedb45e | 40 | |
04fd7a9f KZ |
41 | #include "pathnames.h" |
42 | #include "nls.h" | |
c05a80ca | 43 | #include "closestream.h" |
9d67679b | 44 | #include "c.h" |
ad38fb9f | 45 | #include "strutils.h" |
6f312c89 | 46 | #include "xalloc.h" |
fb9a0042 | 47 | #include "optutils.h" |
e346233e | 48 | #include "mangle.h" |
04fd7a9f | 49 | |
9d67679b KZ |
50 | /* flags */ |
51 | enum { | |
52 | FL_EVALUATE = (1 << 1), | |
53 | FL_CANONICALIZE = (1 << 2), | |
54 | FL_FIRSTONLY = (1 << 3), | |
55 | FL_INVERT = (1 << 4), | |
9d67679b | 56 | FL_NOSWAPMATCH = (1 << 6), |
b2214e1f | 57 | FL_NOFSROOT = (1 << 7), |
049caefd | 58 | FL_SUBMOUNTS = (1 << 8), |
cd4ed46f KZ |
59 | FL_POLL = (1 << 9), |
60 | FL_DF = (1 << 10), | |
bebdda30 | 61 | FL_ALL = (1 << 11), |
2b6759df | 62 | FL_UNIQ = (1 << 12), |
85c9ca5a | 63 | FL_BYTES = (1 << 13), |
097e7f2f | 64 | FL_NOCACHE = (1 << 14), |
0009f510 | 65 | FL_STRICTTARGET = (1 << 15), |
85c9ca5a KZ |
66 | |
67 | /* basic table settings */ | |
68 | FL_ASCII = (1 << 20), | |
69 | FL_RAW = (1 << 21), | |
70 | FL_NOHEADINGS = (1 << 22), | |
71 | FL_EXPORT = (1 << 23), | |
8449f2cb KZ |
72 | FL_TREE = (1 << 24), |
73 | FL_JSON = (1 << 25), | |
9d67679b KZ |
74 | }; |
75 | ||
76 | /* column IDs */ | |
04fd7a9f KZ |
77 | enum { |
78 | COL_SOURCE, | |
79 | COL_TARGET, | |
80 | COL_FSTYPE, | |
81 | COL_OPTIONS, | |
631280e0 KZ |
82 | COL_VFS_OPTIONS, |
83 | COL_FS_OPTIONS, | |
04fd7a9f KZ |
84 | COL_LABEL, |
85 | COL_UUID, | |
090b5e84 KZ |
86 | COL_PARTLABEL, |
87 | COL_PARTUUID, | |
46236388 | 88 | COL_MAJMIN, |
32e5466a KZ |
89 | COL_ACTION, |
90 | COL_OLD_TARGET, | |
91 | COL_OLD_OPTIONS, | |
a85ef33b DR |
92 | COL_SIZE, |
93 | COL_AVAIL, | |
94 | COL_USED, | |
95 | COL_USEPERC, | |
8b8cd87b | 96 | COL_FSROOT, |
7d8f4e0c | 97 | COL_TID, |
9238e0fa | 98 | COL_ID, |
327ea85a | 99 | COL_OPT_FIELDS, |
624f2b47 | 100 | COL_PROPAGATION, |
426f0cea | 101 | COL_FREQ, |
edaf38cf | 102 | COL_PASSNO |
04fd7a9f KZ |
103 | }; |
104 | ||
8c5eba3e KZ |
105 | enum { |
106 | TABTYPE_FSTAB = 1, | |
107 | TABTYPE_MTAB, | |
108 | TABTYPE_KERNEL | |
109 | }; | |
110 | ||
9d67679b KZ |
111 | /* column names */ |
112 | struct colinfo { | |
113 | const char *name; /* header */ | |
114 | double whint; /* width hint (N < 1 is in percent of termwidth) */ | |
218a3a94 | 115 | int flags; /* libsmartcols flags */ |
b152e359 | 116 | const char *help; /* column description */ |
9d67679b | 117 | const char *match; /* pattern for match_func() */ |
cd492186 | 118 | void *match_data; /* match specific data */ |
04fd7a9f KZ |
119 | }; |
120 | ||
af0dc7d3 | 121 | /* columns descriptions (don't use const, this is writable) */ |
edaf38cf | 122 | static struct colinfo infos[] = { |
218a3a94 OO |
123 | [COL_SOURCE] = { "SOURCE", 0.25, SCOLS_FL_NOEXTREMES, N_("source device") }, |
124 | [COL_TARGET] = { "TARGET", 0.30, SCOLS_FL_TREE| SCOLS_FL_NOEXTREMES, N_("mountpoint") }, | |
125 | [COL_FSTYPE] = { "FSTYPE", 0.10, SCOLS_FL_TRUNC, N_("filesystem type") }, | |
126 | [COL_OPTIONS] = { "OPTIONS", 0.10, SCOLS_FL_TRUNC, N_("all mount options") }, | |
127 | [COL_VFS_OPTIONS] = { "VFS-OPTIONS", 0.20, SCOLS_FL_TRUNC, N_("VFS specific mount options") }, | |
128 | [COL_FS_OPTIONS] = { "FS-OPTIONS", 0.10, SCOLS_FL_TRUNC, N_("FS specific mount options") }, | |
b152e359 KZ |
129 | [COL_LABEL] = { "LABEL", 0.10, 0, N_("filesystem label") }, |
130 | [COL_UUID] = { "UUID", 36, 0, N_("filesystem UUID") }, | |
090b5e84 KZ |
131 | [COL_PARTLABEL] = { "PARTLABEL", 0.10, 0, N_("partition label") }, |
132 | [COL_PARTUUID] = { "PARTUUID", 36, 0, N_("partition UUID") }, | |
b152e359 | 133 | [COL_MAJMIN] = { "MAJ:MIN", 6, 0, N_("major:minor device number") }, |
218a3a94 OO |
134 | [COL_ACTION] = { "ACTION", 10, SCOLS_FL_STRICTWIDTH, N_("action detected by --poll") }, |
135 | [COL_OLD_OPTIONS] = { "OLD-OPTIONS", 0.10, SCOLS_FL_TRUNC, N_("old mount options saved by --poll") }, | |
b152e359 | 136 | [COL_OLD_TARGET] = { "OLD-TARGET", 0.30, 0, N_("old mountpoint saved by --poll") }, |
218a3a94 OO |
137 | [COL_SIZE] = { "SIZE", 5, SCOLS_FL_RIGHT, N_("filesystem size") }, |
138 | [COL_AVAIL] = { "AVAIL", 5, SCOLS_FL_RIGHT, N_("filesystem size available") }, | |
139 | [COL_USED] = { "USED", 5, SCOLS_FL_RIGHT, N_("filesystem size used") }, | |
140 | [COL_USEPERC] = { "USE%", 3, SCOLS_FL_RIGHT, N_("filesystem use percentage") }, | |
141 | [COL_FSROOT] = { "FSROOT", 0.25, SCOLS_FL_NOEXTREMES, N_("filesystem root") }, | |
142 | [COL_TID] = { "TID", 4, SCOLS_FL_RIGHT, N_("task ID") }, | |
143 | [COL_ID] = { "ID", 2, SCOLS_FL_RIGHT, N_("mount ID") }, | |
144 | [COL_OPT_FIELDS] = { "OPT-FIELDS", 0.10, SCOLS_FL_TRUNC, N_("optional mount fields") }, | |
426f0cea | 145 | [COL_PROPAGATION] = { "PROPAGATION", 0.10, 0, N_("VFS propagation flags") }, |
218a3a94 OO |
146 | [COL_FREQ] = { "FREQ", 1, SCOLS_FL_RIGHT, N_("dump(8) period in days [fstab only]") }, |
147 | [COL_PASSNO] = { "PASSNO", 1, SCOLS_FL_RIGHT, N_("pass number on parallel fsck(8) [fstab only]") } | |
04fd7a9f KZ |
148 | }; |
149 | ||
edaf38cf KZ |
150 | /* columns[] array specifies all currently wanted output column. The columns |
151 | * are defined by infos[] array and you can specify (on command line) each | |
152 | * column twice. That's enough, dynamically allocated array of the columns is | |
153 | * unnecessary overkill and over-engineering in this case */ | |
154 | static int columns[ARRAY_SIZE(infos) * 2]; | |
40b17508 | 155 | static size_t ncolumns; |
edaf38cf KZ |
156 | |
157 | static inline size_t err_columns_index(size_t arysz, size_t idx) | |
158 | { | |
159 | if (idx >= arysz) | |
160 | errx(EXIT_FAILURE, _("too many columns specified, " | |
1d231190 | 161 | "the limit is %zu columns"), |
edaf38cf KZ |
162 | arysz - 1); |
163 | return idx; | |
164 | } | |
165 | ||
166 | #define add_column(ary, n, id) \ | |
167 | ((ary)[ err_columns_index(ARRAY_SIZE(ary), (n)) ] = (id)) | |
168 | ||
9d67679b | 169 | /* global flags */ |
af0dc7d3 | 170 | static int flags; |
9d67679b | 171 | |
9d67679b | 172 | |
582a5006 | 173 | /* poll actions (parsed --poll=<list> */ |
af0dc7d3 KZ |
174 | #define FINDMNT_NACTIONS 4 /* mount, umount, move, remount */ |
175 | static int actions[FINDMNT_NACTIONS]; | |
176 | static int nactions; | |
582a5006 | 177 | |
9d67679b | 178 | /* libmount cache */ |
af0dc7d3 | 179 | static struct libmnt_cache *cache; |
04fd7a9f | 180 | |
e346233e KZ |
181 | #ifdef HAVE_LIBUDEV |
182 | struct udev *udev; | |
183 | #endif | |
184 | ||
31f67453 KZ |
185 | static int match_func(struct libmnt_fs *fs, void *data __attribute__ ((__unused__))); |
186 | ||
187 | ||
00b4bcdf | 188 | static int get_column_id(int num) |
9d67679b | 189 | { |
40b17508 KZ |
190 | assert(num >= 0); |
191 | assert((size_t) num < ncolumns); | |
edaf38cf | 192 | assert((size_t) columns[num] < ARRAY_SIZE(infos)); |
fdedb45e | 193 | return columns[num]; |
9d67679b KZ |
194 | } |
195 | ||
00b4bcdf | 196 | static struct colinfo *get_column_info(int num) |
9d67679b KZ |
197 | { |
198 | return &infos[ get_column_id(num) ]; | |
199 | } | |
200 | ||
00b4bcdf | 201 | static const char *column_id_to_name(int id) |
9d67679b | 202 | { |
edaf38cf | 203 | assert((size_t) id < ARRAY_SIZE(infos)); |
9d67679b KZ |
204 | return infos[id].name; |
205 | } | |
206 | ||
00b4bcdf | 207 | static const char *get_column_name(int num) |
9d67679b | 208 | { |
fdedb45e | 209 | return get_column_info(num)->name; |
9d67679b KZ |
210 | } |
211 | ||
00b4bcdf | 212 | static float get_column_whint(int num) |
9d67679b | 213 | { |
fdedb45e | 214 | return get_column_info(num)->whint; |
9d67679b KZ |
215 | } |
216 | ||
32e5466a | 217 | static int get_column_flags(int num) |
9d67679b | 218 | { |
32e5466a | 219 | return get_column_info(num)->flags; |
9d67679b KZ |
220 | } |
221 | ||
00b4bcdf | 222 | static const char *get_match(int id) |
9d67679b | 223 | { |
edaf38cf | 224 | assert((size_t) id < ARRAY_SIZE(infos)); |
9d67679b KZ |
225 | return infos[id].match; |
226 | } | |
227 | ||
cd492186 KZ |
228 | static void *get_match_data(int id) |
229 | { | |
edaf38cf | 230 | assert((size_t) id < ARRAY_SIZE(infos)); |
cd492186 KZ |
231 | return infos[id].match_data; |
232 | } | |
233 | ||
00b4bcdf | 234 | static void set_match(int id, const char *match) |
9d67679b | 235 | { |
edaf38cf | 236 | assert((size_t) id < ARRAY_SIZE(infos)); |
9d67679b KZ |
237 | infos[id].match = match; |
238 | } | |
239 | ||
cd492186 KZ |
240 | static void set_match_data(int id, void *data) |
241 | { | |
edaf38cf | 242 | assert((size_t) id < ARRAY_SIZE(infos)); |
cd492186 KZ |
243 | infos[id].match_data = data; |
244 | } | |
245 | ||
4bfd4bff KZ |
246 | /* |
247 | * source match means COL_SOURCE *or* COL_MAJMIN, depends on | |
248 | * data format. | |
249 | */ | |
cd492186 KZ |
250 | static void set_source_match(const char *data) |
251 | { | |
252 | int maj, min; | |
253 | ||
254 | if (sscanf(data, "%d:%d", &maj, &min) == 2) { | |
255 | dev_t *devno = xmalloc(sizeof(dev_t)); | |
256 | ||
257 | *devno = makedev(maj, min); | |
258 | set_match(COL_MAJMIN, data); | |
259 | set_match_data(COL_MAJMIN, (void *) devno); | |
4bfd4bff | 260 | flags |= FL_NOSWAPMATCH; |
cd492186 KZ |
261 | } else |
262 | set_match(COL_SOURCE, data); | |
263 | } | |
264 | ||
0009f510 KZ |
265 | /* |
266 | * Extra functionality for --target <path>. The function mnt_table_find_mountpoint() | |
267 | * also checks parents (path elements in reverse order) to get mountpoint. | |
268 | * | |
269 | * @tb has to be from kernel (so no fstab or so)! | |
270 | */ | |
cd41b385 | 271 | static void enable_extra_target_match(struct libmnt_table *tb) |
4bfd4bff | 272 | { |
cd41b385 KZ |
273 | char *cn = NULL; |
274 | const char *tgt = NULL, *mnt = NULL; | |
275 | struct libmnt_fs *fs; | |
4bfd4bff KZ |
276 | |
277 | /* | |
278 | * Check if match pattern is mountpoint, if not use the | |
279 | * real mountpoint. | |
280 | */ | |
097e7f2f | 281 | if (flags & FL_NOCACHE) |
4631e254 | 282 | tgt = get_match(COL_TARGET); |
097e7f2f | 283 | else { |
4631e254 | 284 | tgt = cn = mnt_resolve_path(get_match(COL_TARGET), cache); |
097e7f2f KZ |
285 | if (!cn) |
286 | return; | |
287 | } | |
4bfd4bff | 288 | |
cd41b385 KZ |
289 | fs = mnt_table_find_mountpoint(tb, tgt, MNT_ITER_BACKWARD); |
290 | if (fs) | |
291 | mnt = mnt_fs_get_target(fs); | |
4631e254 | 292 | if (mnt && strcmp(mnt, tgt) != 0) |
cd41b385 | 293 | set_match(COL_TARGET, xstrdup(mnt)); /* replace the current setting */ |
4bfd4bff | 294 | |
4631e254 KZ |
295 | if (!cache) |
296 | free(cn); | |
4bfd4bff KZ |
297 | } |
298 | ||
cd492186 | 299 | |
32e5466a KZ |
300 | static int is_tabdiff_column(int id) |
301 | { | |
edaf38cf | 302 | assert((size_t) id < ARRAY_SIZE(infos)); |
32e5466a KZ |
303 | |
304 | switch(id) { | |
305 | case COL_ACTION: | |
306 | case COL_OLD_TARGET: | |
307 | case COL_OLD_OPTIONS: | |
308 | return 1; | |
309 | default: | |
310 | break; | |
311 | } | |
312 | return 0; | |
313 | } | |
314 | ||
9d67679b KZ |
315 | /* |
316 | * "findmnt" without any filter | |
317 | */ | |
00b4bcdf | 318 | static int is_listall_mode(void) |
9d67679b | 319 | { |
cd4ed46f KZ |
320 | if ((flags & FL_DF) && !(flags & FL_ALL)) |
321 | return 0; | |
322 | ||
9d67679b KZ |
323 | return (!get_match(COL_SOURCE) && |
324 | !get_match(COL_TARGET) && | |
325 | !get_match(COL_FSTYPE) && | |
cd492186 KZ |
326 | !get_match(COL_OPTIONS) && |
327 | !get_match(COL_MAJMIN)); | |
9d67679b KZ |
328 | } |
329 | ||
582a5006 KZ |
330 | /* |
331 | * Returns 1 if the @act is in the --poll=<list> | |
332 | */ | |
333 | static int has_poll_action(int act) | |
334 | { | |
335 | int i; | |
336 | ||
337 | if (!nactions) | |
338 | return 1; /* all actions enabled */ | |
339 | for (i = 0; i < nactions; i++) | |
340 | if (actions[i] == act) | |
341 | return 1; | |
342 | return 0; | |
343 | } | |
344 | ||
345 | static int poll_action_name_to_id(const char *name, size_t namesz) | |
346 | { | |
347 | int id = -1; | |
348 | ||
349 | if (strncasecmp(name, "move", namesz) == 0 && namesz == 4) | |
350 | id = MNT_TABDIFF_MOVE; | |
351 | else if (strncasecmp(name, "mount", namesz) == 0 && namesz == 5) | |
352 | id = MNT_TABDIFF_MOUNT; | |
353 | else if (strncasecmp(name, "umount", namesz) == 0 && namesz == 6) | |
354 | id = MNT_TABDIFF_UMOUNT; | |
355 | else if (strncasecmp(name, "remount", namesz) == 0 && namesz == 7) | |
356 | id = MNT_TABDIFF_REMOUNT; | |
357 | else | |
358 | warnx(_("unknown action: %s"), name); | |
359 | ||
360 | return id; | |
361 | } | |
362 | ||
9d67679b KZ |
363 | /* |
364 | * findmnt --first-only <devname|TAG=|mountpoint> | |
365 | * | |
366 | * ... it works like "mount <devname|TAG=|mountpoint>" | |
367 | */ | |
00b4bcdf | 368 | static int is_mount_compatible_mode(void) |
9d67679b KZ |
369 | { |
370 | if (!get_match(COL_SOURCE)) | |
371 | return 0; /* <devname|TAG=|mountpoint> is required */ | |
372 | if (get_match(COL_FSTYPE) || get_match(COL_OPTIONS)) | |
373 | return 0; /* cannot be restricted by -t or -O */ | |
374 | if (!(flags & FL_FIRSTONLY)) | |
375 | return 0; /* we have to return the first entry only */ | |
376 | ||
377 | return 1; /* ok */ | |
378 | } | |
379 | ||
32e5466a | 380 | static void disable_columns_truncate(void) |
9d67679b | 381 | { |
edaf38cf | 382 | size_t i; |
9d67679b | 383 | |
edaf38cf | 384 | for (i = 0; i < ARRAY_SIZE(infos); i++) |
218a3a94 | 385 | infos[i].flags &= ~SCOLS_FL_TRUNC; |
9d67679b KZ |
386 | } |
387 | ||
04fd7a9f KZ |
388 | /* |
389 | * converts @name to column ID | |
390 | */ | |
9d67679b | 391 | static int column_name_to_id(const char *name, size_t namesz) |
04fd7a9f | 392 | { |
edaf38cf | 393 | size_t i; |
04fd7a9f | 394 | |
edaf38cf | 395 | for (i = 0; i < ARRAY_SIZE(infos); i++) { |
9d67679b | 396 | const char *cn = column_id_to_name(i); |
04fd7a9f | 397 | |
9d67679b | 398 | if (!strncasecmp(name, cn, namesz) && !*(cn + namesz)) |
04fd7a9f KZ |
399 | return i; |
400 | } | |
fdedb45e | 401 | warnx(_("unknown column: %s"), name); |
04fd7a9f KZ |
402 | return -1; |
403 | } | |
404 | ||
e346233e KZ |
405 | |
406 | #ifdef HAVE_LIBUDEV | |
407 | static char *get_tag_from_udev(const char *devname, int col) | |
408 | { | |
409 | struct udev_device *dev; | |
410 | const char *data = NULL; | |
4ba4893b | 411 | char *res = NULL, *path; |
e346233e KZ |
412 | |
413 | if (!udev) | |
414 | udev = udev_new(); | |
415 | if (!udev) | |
416 | return NULL; | |
417 | ||
4ba4893b KZ |
418 | /* libudev don't like /dev/mapper/ symlinks */ |
419 | path = realpath(devname, NULL); | |
420 | if (path) | |
421 | devname = path; | |
422 | ||
e346233e KZ |
423 | if (strncmp(devname, "/dev/", 5) == 0) |
424 | devname += 5; | |
425 | ||
426 | dev = udev_device_new_from_subsystem_sysname(udev, "block", devname); | |
4ba4893b KZ |
427 | free(path); |
428 | ||
e346233e KZ |
429 | if (!dev) |
430 | return NULL; | |
431 | ||
432 | switch(col) { | |
433 | case COL_LABEL: | |
434 | data = udev_device_get_property_value(dev, "ID_FS_LABEL_ENC"); | |
435 | break; | |
436 | case COL_UUID: | |
437 | data = udev_device_get_property_value(dev, "ID_FS_UUID_ENC"); | |
438 | break; | |
439 | case COL_PARTUUID: | |
440 | data = udev_device_get_property_value(dev, "ID_PART_ENTRY_UUID"); | |
441 | break; | |
442 | case COL_PARTLABEL: | |
443 | data = udev_device_get_property_value(dev, "ID_PART_ENTRY_NAME"); | |
444 | break; | |
445 | default: | |
446 | break; | |
447 | } | |
448 | ||
449 | if (data) { | |
450 | res = xstrdup(data); | |
451 | unhexmangle_string(res); | |
452 | } | |
453 | ||
454 | udev_device_unref(dev); | |
455 | return res; | |
456 | } | |
457 | #endif /* HAVE_LIBUDEV */ | |
458 | ||
fdedb45e | 459 | /* Returns LABEL or UUID */ |
b3386c83 | 460 | static char *get_tag(struct libmnt_fs *fs, const char *tagname, int col |
81499ab2 KZ |
461 | #ifndef HAVE_LIBUDEV |
462 | __attribute__((__unused__)) | |
463 | #endif | |
464 | ) | |
9d67679b | 465 | { |
b3386c83 KZ |
466 | const char *t, *v; |
467 | char *res = NULL; | |
9d67679b KZ |
468 | |
469 | if (!mnt_fs_get_tag(fs, &t, &v) && !strcmp(t, tagname)) | |
b3386c83 | 470 | res = xstrdup(v); |
9d67679b | 471 | else { |
e346233e KZ |
472 | const char *dev = mnt_fs_get_source(fs); |
473 | ||
097e7f2f | 474 | if (dev && !(flags & FL_NOCACHE)) |
e346233e KZ |
475 | dev = mnt_resolve_spec(dev, cache); |
476 | #ifdef HAVE_LIBUDEV | |
477 | if (dev) | |
478 | res = get_tag_from_udev(dev, col); | |
479 | #endif | |
b3386c83 | 480 | if (!res) { |
e346233e | 481 | res = mnt_cache_find_tag_value(cache, dev, tagname); |
b3386c83 KZ |
482 | if (res && cache) |
483 | /* don't return pointer to cache */ | |
484 | res = xstrdup(res); | |
485 | } | |
9d67679b KZ |
486 | } |
487 | ||
488 | return res; | |
489 | } | |
490 | ||
b3386c83 | 491 | static char *get_vfs_attr(struct libmnt_fs *fs, int sizetype) |
a85ef33b DR |
492 | { |
493 | struct statvfs buf; | |
6901f22c | 494 | uint64_t vfs_attr = 0; |
a85ef33b DR |
495 | char *sizestr; |
496 | ||
497 | if (statvfs(mnt_fs_get_target(fs), &buf) != 0) | |
498 | return NULL; | |
499 | ||
500 | switch(sizetype) { | |
501 | case COL_SIZE: | |
502 | vfs_attr = buf.f_frsize * buf.f_blocks; | |
503 | break; | |
504 | case COL_AVAIL: | |
ed6c8c1b | 505 | vfs_attr = buf.f_frsize * buf.f_bavail; |
a85ef33b DR |
506 | break; |
507 | case COL_USED: | |
508 | vfs_attr = buf.f_frsize * (buf.f_blocks - buf.f_bfree); | |
509 | break; | |
510 | case COL_USEPERC: | |
511 | if (buf.f_blocks == 0) | |
203c945a | 512 | return xstrdup("-"); |
a85ef33b | 513 | |
d7bcb205 KZ |
514 | xasprintf(&sizestr, "%.0f%%", |
515 | (double)(buf.f_blocks - buf.f_bfree) / | |
516 | buf.f_blocks * 100); | |
a85ef33b DR |
517 | return sizestr; |
518 | } | |
519 | ||
2b6759df KZ |
520 | if (!vfs_attr) |
521 | sizestr = xstrdup("0"); | |
522 | else if (flags & FL_BYTES) | |
523 | xasprintf(&sizestr, "%ju", vfs_attr); | |
524 | else | |
525 | sizestr = size_to_human_string(SIZE_SUFFIX_1LETTER, vfs_attr); | |
526 | ||
527 | return sizestr; | |
a85ef33b DR |
528 | } |
529 | ||
46236388 | 530 | /* reads FS data from libmount |
46236388 | 531 | */ |
b3386c83 | 532 | static char *get_data(struct libmnt_fs *fs, int num) |
9d67679b | 533 | { |
b3386c83 | 534 | char *str = NULL; |
a85ef33b | 535 | int col_id = get_column_id(num); |
9d67679b | 536 | |
a85ef33b | 537 | switch (col_id) { |
04fd7a9f | 538 | case COL_SOURCE: |
b2214e1f KZ |
539 | { |
540 | const char *root = mnt_fs_get_root(fs); | |
b3386c83 | 541 | const char *spec = mnt_fs_get_srcpath(fs); |
4631e254 | 542 | char *cn = NULL; |
b2214e1f | 543 | |
b3386c83 | 544 | if (spec && (flags & FL_CANONICALIZE)) |
4631e254 | 545 | spec = cn = mnt_resolve_path(spec, cache); |
b3386c83 KZ |
546 | if (!spec) { |
547 | spec = mnt_fs_get_source(fs); | |
9d67679b | 548 | |
b3386c83 | 549 | if (spec && (flags & FL_EVALUATE)) |
4631e254 | 550 | spec = cn = mnt_resolve_spec(spec, cache); |
b2214e1f | 551 | } |
b3386c83 KZ |
552 | if (root && spec && !(flags & FL_NOFSROOT) && strcmp(root, "/")) |
553 | xasprintf(&str, "%s[%s]", spec, root); | |
554 | else if (spec) | |
555 | str = xstrdup(spec); | |
4631e254 KZ |
556 | if (!cache) |
557 | free(cn); | |
04fd7a9f | 558 | break; |
b2214e1f | 559 | } |
04fd7a9f | 560 | case COL_TARGET: |
b3386c83 | 561 | str = xstrdup(mnt_fs_get_target(fs)); |
04fd7a9f KZ |
562 | break; |
563 | case COL_FSTYPE: | |
b3386c83 | 564 | str = xstrdup(mnt_fs_get_fstype(fs)); |
04fd7a9f KZ |
565 | break; |
566 | case COL_OPTIONS: | |
b3386c83 | 567 | str = xstrdup(mnt_fs_get_options(fs)); |
04fd7a9f | 568 | break; |
631280e0 | 569 | case COL_VFS_OPTIONS: |
b3386c83 | 570 | str = xstrdup(mnt_fs_get_vfs_options(fs)); |
631280e0 KZ |
571 | break; |
572 | case COL_FS_OPTIONS: | |
b3386c83 | 573 | str = xstrdup(mnt_fs_get_fs_options(fs)); |
631280e0 | 574 | break; |
327ea85a | 575 | case COL_OPT_FIELDS: |
b3386c83 | 576 | str = xstrdup(mnt_fs_get_optional_fields(fs)); |
327ea85a | 577 | break; |
9d67679b | 578 | case COL_UUID: |
e346233e | 579 | str = get_tag(fs, "UUID", col_id); |
9d67679b | 580 | break; |
090b5e84 | 581 | case COL_PARTUUID: |
e346233e | 582 | str = get_tag(fs, "PARTUUID", col_id); |
090b5e84 | 583 | break; |
9d67679b | 584 | case COL_LABEL: |
e346233e | 585 | str = get_tag(fs, "LABEL", col_id); |
9d67679b | 586 | break; |
090b5e84 | 587 | case COL_PARTLABEL: |
e346233e | 588 | str = get_tag(fs, "PARTLABEL", col_id); |
090b5e84 KZ |
589 | break; |
590 | ||
46236388 KZ |
591 | case COL_MAJMIN: |
592 | { | |
593 | dev_t devno = mnt_fs_get_devno(fs); | |
60b17c6f KZ |
594 | if (!devno) |
595 | break; | |
596 | ||
8449f2cb | 597 | if ((flags & FL_RAW) || (flags & FL_EXPORT) || (flags & FL_JSON)) |
b3386c83 | 598 | xasprintf(&str, "%u:%u", major(devno), minor(devno)); |
60b17c6f | 599 | else |
b3386c83 | 600 | xasprintf(&str, "%3u:%-3u", major(devno), minor(devno)); |
a85ef33b | 601 | break; |
46236388 | 602 | } |
a85ef33b DR |
603 | case COL_SIZE: |
604 | case COL_AVAIL: | |
605 | case COL_USED: | |
606 | case COL_USEPERC: | |
607 | str = get_vfs_attr(fs, col_id); | |
608 | break; | |
8b8cd87b | 609 | case COL_FSROOT: |
b3386c83 | 610 | str = xstrdup(mnt_fs_get_root(fs)); |
8b8cd87b | 611 | break; |
7d8f4e0c | 612 | case COL_TID: |
b3386c83 KZ |
613 | if (mnt_fs_get_tid(fs)) |
614 | xasprintf(&str, "%d", mnt_fs_get_tid(fs)); | |
7d8f4e0c | 615 | break; |
9238e0fa | 616 | case COL_ID: |
b3386c83 KZ |
617 | if (mnt_fs_get_id(fs)) |
618 | xasprintf(&str, "%d", mnt_fs_get_id(fs)); | |
9238e0fa | 619 | break; |
624f2b47 KZ |
620 | case COL_PROPAGATION: |
621 | if (mnt_fs_is_kernel(fs)) { | |
622 | unsigned long fl = 0; | |
623 | char *n = NULL; | |
624 | ||
625 | if (mnt_fs_get_propagation(fs, &fl) != 0) | |
626 | break; | |
627 | ||
628 | n = xstrdup((fl & MS_SHARED) ? "shared" : "private"); | |
629 | ||
630 | if (fl & MS_SLAVE) { | |
b3386c83 | 631 | xasprintf(&str, "%s,slave", n); |
624f2b47 | 632 | free(n); |
b3386c83 | 633 | n = str; |
624f2b47 KZ |
634 | } |
635 | if (fl & MS_UNBINDABLE) { | |
b3386c83 | 636 | xasprintf(&str, "%s,unbindable", n); |
624f2b47 | 637 | free(n); |
b3386c83 | 638 | n = str; |
624f2b47 KZ |
639 | } |
640 | str = n; | |
641 | } | |
642 | break; | |
426f0cea | 643 | case COL_FREQ: |
b3386c83 KZ |
644 | if (!mnt_fs_is_kernel(fs)) |
645 | xasprintf(&str, "%d", mnt_fs_get_freq(fs)); | |
426f0cea KZ |
646 | break; |
647 | case COL_PASSNO: | |
b3386c83 KZ |
648 | if (!mnt_fs_is_kernel(fs)) |
649 | xasprintf(&str, "%d", mnt_fs_get_passno(fs)); | |
426f0cea | 650 | break; |
04fd7a9f | 651 | default: |
9d67679b | 652 | break; |
04fd7a9f | 653 | } |
fdedb45e | 654 | return str; |
9d67679b KZ |
655 | } |
656 | ||
b3386c83 | 657 | static char *get_tabdiff_data(struct libmnt_fs *old_fs, |
32e5466a KZ |
658 | struct libmnt_fs *new_fs, |
659 | int change, | |
660 | int num) | |
661 | { | |
b3386c83 | 662 | char *str = NULL; |
32e5466a KZ |
663 | |
664 | switch (get_column_id(num)) { | |
665 | case COL_ACTION: | |
666 | switch (change) { | |
667 | case MNT_TABDIFF_MOUNT: | |
668 | str = _("mount"); | |
669 | break; | |
670 | case MNT_TABDIFF_UMOUNT: | |
671 | str = _("umount"); | |
672 | break; | |
673 | case MNT_TABDIFF_REMOUNT: | |
674 | str = _("remount"); | |
675 | break; | |
676 | case MNT_TABDIFF_MOVE: | |
677 | str = _("move"); | |
678 | break; | |
679 | default: | |
680 | str = _("unknown"); | |
681 | break; | |
682 | } | |
b3386c83 | 683 | str = xstrdup(str); |
32e5466a KZ |
684 | break; |
685 | case COL_OLD_OPTIONS: | |
77a1c5f7 KZ |
686 | if (old_fs && (change == MNT_TABDIFF_REMOUNT || |
687 | change == MNT_TABDIFF_UMOUNT)) | |
b3386c83 | 688 | str = xstrdup(mnt_fs_get_options(old_fs)); |
32e5466a KZ |
689 | break; |
690 | case COL_OLD_TARGET: | |
77a1c5f7 KZ |
691 | if (old_fs && (change == MNT_TABDIFF_MOVE || |
692 | change == MNT_TABDIFF_UMOUNT)) | |
b3386c83 | 693 | str = xstrdup(mnt_fs_get_target(old_fs)); |
32e5466a KZ |
694 | break; |
695 | default: | |
696 | if (new_fs) | |
697 | str = get_data(new_fs, num); | |
698 | else | |
699 | str = get_data(old_fs, num); | |
700 | break; | |
701 | } | |
702 | return str; | |
703 | } | |
704 | ||
fdedb45e | 705 | /* adds one line to the output @tab */ |
218a3a94 OO |
706 | static struct libscols_line *add_line(struct libscols_table *table, struct libmnt_fs *fs, |
707 | struct libscols_line *parent) | |
9d67679b | 708 | { |
40b17508 | 709 | size_t i; |
218a3a94 | 710 | struct libscols_line *line = scols_table_new_line(table, parent); |
9d67679b | 711 | |
fdedb45e KZ |
712 | if (!line) { |
713 | warn(_("failed to add line to output")); | |
714 | return NULL; | |
9d67679b | 715 | } |
fdedb45e | 716 | for (i = 0; i < ncolumns; i++) |
85c9ca5a | 717 | scols_line_refer_data(line, i, get_data(fs, i)); |
9d67679b | 718 | |
218a3a94 | 719 | scols_line_set_userdata(line, fs); |
fdedb45e | 720 | return line; |
9d67679b KZ |
721 | } |
722 | ||
218a3a94 | 723 | static struct libscols_line *add_tabdiff_line(struct libscols_table *table, struct libmnt_fs *new_fs, |
32e5466a KZ |
724 | struct libmnt_fs *old_fs, int change) |
725 | { | |
40b17508 | 726 | size_t i; |
218a3a94 | 727 | struct libscols_line *line = scols_table_new_line(table, NULL); |
32e5466a KZ |
728 | |
729 | if (!line) { | |
730 | warn(_("failed to add line to output")); | |
731 | return NULL; | |
732 | } | |
733 | for (i = 0; i < ncolumns; i++) | |
85c9ca5a | 734 | scols_line_refer_data(line, i, |
32e5466a KZ |
735 | get_tabdiff_data(old_fs, new_fs, change, i)); |
736 | ||
737 | return line; | |
738 | } | |
739 | ||
218a3a94 | 740 | static int has_line(struct libscols_table *table, struct libmnt_fs *fs) |
049caefd | 741 | { |
218a3a94 OO |
742 | struct libscols_line *ln; |
743 | struct libscols_iter *itr; | |
aea3a3ba | 744 | int rc = 0; |
218a3a94 OO |
745 | |
746 | itr = scols_new_iter(SCOLS_ITER_FORWARD); | |
747 | if (!itr) | |
748 | return 0; | |
049caefd | 749 | |
aea3a3ba KZ |
750 | while (scols_table_next_line(table, itr, &ln) == 0) { |
751 | if ((struct libmnt_fs *) scols_line_get_userdata(ln) == fs) { | |
752 | rc = 1; | |
753 | break; | |
754 | } | |
049caefd | 755 | } |
aea3a3ba KZ |
756 | |
757 | scols_free_iter(itr); | |
758 | return rc; | |
049caefd KZ |
759 | } |
760 | ||
218a3a94 OO |
761 | /* reads filesystems from @tb (libmount) and fillin @table (output table) */ |
762 | static int create_treenode(struct libscols_table *table, struct libmnt_table *tb, | |
763 | struct libmnt_fs *fs, struct libscols_line *parent_line) | |
04fd7a9f | 764 | { |
68164f6c KZ |
765 | struct libmnt_fs *chld = NULL; |
766 | struct libmnt_iter *itr = NULL; | |
218a3a94 | 767 | struct libscols_line *line; |
fdedb45e | 768 | int rc = -1; |
9d67679b | 769 | |
fdedb45e KZ |
770 | if (!fs) { |
771 | /* first call, get root FS */ | |
68164f6c | 772 | if (mnt_table_get_root_fs(tb, &fs)) |
fdedb45e KZ |
773 | goto leave; |
774 | parent_line = NULL; | |
049caefd | 775 | |
218a3a94 | 776 | } else if ((flags & FL_SUBMOUNTS) && has_line(table, fs)) |
049caefd | 777 | return 0; |
9d67679b | 778 | |
fdedb45e KZ |
779 | itr = mnt_new_iter(MNT_ITER_FORWARD); |
780 | if (!itr) | |
781 | goto leave; | |
9d67679b | 782 | |
31f67453 | 783 | if ((flags & FL_SUBMOUNTS) || match_func(fs, NULL)) { |
218a3a94 | 784 | line = add_line(table, fs, parent_line); |
31f67453 KZ |
785 | if (!line) |
786 | goto leave; | |
787 | } else | |
788 | line = parent_line; | |
9d67679b | 789 | |
fdedb45e KZ |
790 | /* |
791 | * add all children to the output table | |
792 | */ | |
68164f6c | 793 | while(mnt_table_next_child_fs(tb, itr, fs, &chld) == 0) { |
218a3a94 | 794 | if (create_treenode(table, tb, chld, line)) |
fdedb45e | 795 | goto leave; |
9d67679b | 796 | } |
fdedb45e KZ |
797 | rc = 0; |
798 | leave: | |
799 | mnt_free_iter(itr); | |
800 | return rc; | |
04fd7a9f KZ |
801 | } |
802 | ||
20055151 | 803 | /* error callback */ |
6e5c0fc2 KZ |
804 | static int parser_errcb(struct libmnt_table *tb __attribute__ ((__unused__)), |
805 | const char *filename, int line) | |
20055151 | 806 | { |
b1b9f1c1 | 807 | warnx(_("%s: parse error at line %d"), filename, line); |
1cd9d0d7 | 808 | return 1; |
20055151 KZ |
809 | } |
810 | ||
8c5eba3e KZ |
811 | static char **append_tabfile(char **files, int *nfiles, char *filename) |
812 | { | |
99d618c0 | 813 | files = xrealloc(files, sizeof(char *) * (*nfiles + 1)); |
8c5eba3e KZ |
814 | files[(*nfiles)++] = filename; |
815 | return files; | |
816 | } | |
817 | ||
c7fcc830 KZ |
818 | static char **append_pid_tabfile(char **files, int *nfiles, pid_t pid) |
819 | { | |
820 | char *path = NULL; | |
821 | ||
822 | xasprintf(&path, "/proc/%d/mountinfo", (int) pid); | |
823 | return append_tabfile(files, nfiles, path); | |
824 | } | |
825 | ||
fdedb45e | 826 | /* calls libmount fstab/mtab/mountinfo parser */ |
8c5eba3e KZ |
827 | static struct libmnt_table *parse_tabfiles(char **files, |
828 | int nfiles, | |
829 | int tabtype) | |
04fd7a9f | 830 | { |
8c5eba3e | 831 | struct libmnt_table *tb; |
762ef0e1 | 832 | int rc = 0; |
20055151 | 833 | |
8c5eba3e | 834 | tb = mnt_new_table(); |
fdedb45e | 835 | if (!tb) { |
32e5466a | 836 | warn(_("failed to initialize libmount table")); |
04fd7a9f | 837 | return NULL; |
fdedb45e | 838 | } |
68164f6c | 839 | mnt_table_set_parser_errcb(tb, parser_errcb); |
20055151 | 840 | |
8c5eba3e KZ |
841 | do { |
842 | /* NULL means that libmount will use default paths */ | |
843 | const char *path = nfiles ? *files++ : NULL; | |
844 | ||
845 | switch (tabtype) { | |
846 | case TABTYPE_FSTAB: | |
847 | rc = mnt_table_parse_fstab(tb, path); | |
848 | break; | |
849 | case TABTYPE_MTAB: | |
850 | rc = mnt_table_parse_mtab(tb, path); | |
851 | break; | |
852 | case TABTYPE_KERNEL: | |
853 | if (!path) | |
854 | path = access(_PATH_PROC_MOUNTINFO, R_OK) == 0 ? | |
855 | _PATH_PROC_MOUNTINFO : | |
856 | _PATH_PROC_MOUNTS; | |
857 | ||
858 | rc = mnt_table_parse_file(tb, path); | |
859 | break; | |
860 | } | |
861 | if (rc) { | |
50fccba1 | 862 | mnt_unref_table(tb); |
8c5eba3e KZ |
863 | warn(_("can't read %s"), path); |
864 | return NULL; | |
865 | } | |
866 | } while (--nfiles > 0); | |
20055151 | 867 | |
04fd7a9f | 868 | return tb; |
04fd7a9f KZ |
869 | } |
870 | ||
fb329bbc ER |
871 | /* |
872 | * Parses mountinfo and calls mnt_cache_set_targets(cache, mtab). Only | |
873 | * necessary if @tb in main() was read from a non-kernel source. | |
874 | */ | |
7ee26cbf | 875 | static void cache_set_targets(struct libmnt_cache *tmp) |
fb329bbc | 876 | { |
23deb5ac KZ |
877 | struct libmnt_table *tb; |
878 | const char *path; | |
fb329bbc ER |
879 | |
880 | tb = mnt_new_table(); | |
881 | if (!tb) | |
23deb5ac | 882 | return; |
fb329bbc ER |
883 | |
884 | path = access(_PATH_PROC_MOUNTINFO, R_OK) == 0 ? | |
885 | _PATH_PROC_MOUNTINFO : | |
886 | _PATH_PROC_MOUNTS; | |
887 | ||
23deb5ac | 888 | if (mnt_table_parse_file(tb, path) == 0) |
7ee26cbf | 889 | mnt_cache_set_targets(tmp, tb); |
fb329bbc | 890 | |
fb329bbc ER |
891 | mnt_unref_table(tb); |
892 | } | |
893 | ||
2f1ac44b KZ |
894 | /* checks if @tb contains parent->child relations */ |
895 | static int tab_is_tree(struct libmnt_table *tb) | |
896 | { | |
897 | struct libmnt_fs *fs = NULL; | |
898 | struct libmnt_iter *itr = NULL; | |
899 | int rc = 0; | |
900 | ||
901 | itr = mnt_new_iter(MNT_ITER_BACKWARD); | |
902 | if (!itr) | |
903 | return 0; | |
904 | ||
6c373810 KZ |
905 | rc = (mnt_table_next_fs(tb, itr, &fs) == 0 && |
906 | mnt_fs_is_kernel(fs) && | |
907 | mnt_fs_get_root(fs)); | |
2f1ac44b KZ |
908 | |
909 | mnt_free_iter(itr); | |
910 | return rc; | |
911 | } | |
912 | ||
9c277ede KZ |
913 | /* checks if all fs in @tb are from kernel */ |
914 | static int tab_is_kernel(struct libmnt_table *tb) | |
915 | { | |
916 | struct libmnt_fs *fs = NULL; | |
917 | struct libmnt_iter *itr = NULL; | |
918 | ||
919 | itr = mnt_new_iter(MNT_ITER_BACKWARD); | |
920 | if (!itr) | |
921 | return 0; | |
922 | ||
923 | while (mnt_table_next_fs(tb, itr, &fs) == 0) { | |
924 | if (!mnt_fs_is_kernel(fs)) { | |
925 | mnt_free_iter(itr); | |
926 | return 0; | |
927 | } | |
928 | } | |
929 | ||
930 | mnt_free_iter(itr); | |
931 | return 1; | |
932 | } | |
b215d8e9 | 933 | |
68164f6c | 934 | /* filter function for libmount (mnt_table_find_next_fs()) */ |
6e5c0fc2 KZ |
935 | static int match_func(struct libmnt_fs *fs, |
936 | void *data __attribute__ ((__unused__))) | |
04fd7a9f | 937 | { |
04fd7a9f | 938 | int rc = flags & FL_INVERT ? 1 : 0; |
9d67679b | 939 | const char *m; |
cd492186 | 940 | void *md; |
04fd7a9f | 941 | |
9d67679b KZ |
942 | m = get_match(COL_FSTYPE); |
943 | if (m && !mnt_fs_match_fstype(fs, m)) | |
04fd7a9f | 944 | return rc; |
9d67679b KZ |
945 | |
946 | m = get_match(COL_OPTIONS); | |
947 | if (m && !mnt_fs_match_options(fs, m)) | |
04fd7a9f KZ |
948 | return rc; |
949 | ||
cd492186 KZ |
950 | md = get_match_data(COL_MAJMIN); |
951 | if (md && mnt_fs_get_devno(fs) != *((dev_t *) md)) | |
952 | return rc; | |
953 | ||
4096946f KZ |
954 | m = get_match(COL_TARGET); |
955 | if (m && !mnt_fs_match_target(fs, m, cache)) | |
956 | return rc; | |
957 | ||
958 | m = get_match(COL_SOURCE); | |
959 | if (m && !mnt_fs_match_source(fs, m, cache)) | |
960 | return rc; | |
961 | ||
cd4ed46f KZ |
962 | if ((flags & FL_DF) && !(flags & FL_ALL)) { |
963 | const char *type = mnt_fs_get_fstype(fs); | |
964 | ||
965 | if (type && strstr(type, "tmpfs")) /* tmpfs is wanted */ | |
966 | return !rc; | |
967 | ||
968 | if (mnt_fs_is_pseudofs(fs)) | |
969 | return rc; | |
970 | } | |
971 | ||
04fd7a9f KZ |
972 | return !rc; |
973 | } | |
974 | ||
fdedb45e | 975 | /* iterate over filesystems in @tb */ |
68164f6c KZ |
976 | static struct libmnt_fs *get_next_fs(struct libmnt_table *tb, |
977 | struct libmnt_iter *itr) | |
04fd7a9f | 978 | { |
68164f6c | 979 | struct libmnt_fs *fs = NULL; |
9d67679b KZ |
980 | |
981 | if (is_listall_mode()) { | |
982 | /* | |
983 | * Print whole file | |
984 | */ | |
e3963f60 KZ |
985 | if (mnt_table_next_fs(tb, itr, &fs) != 0) |
986 | return NULL; | |
9d67679b KZ |
987 | |
988 | } else if (is_mount_compatible_mode()) { | |
989 | /* | |
990 | * Look up for FS in the same way how mount(8) searchs in fstab | |
991 | * | |
992 | * findmnt -f <spec> | |
993 | */ | |
68164f6c | 994 | fs = mnt_table_find_source(tb, get_match(COL_SOURCE), |
9d67679b | 995 | mnt_iter_get_direction(itr)); |
9a30c6ef KZ |
996 | |
997 | if (!fs && !(flags & FL_NOSWAPMATCH)) | |
68164f6c | 998 | fs = mnt_table_find_target(tb, get_match(COL_SOURCE), |
9d67679b KZ |
999 | mnt_iter_get_direction(itr)); |
1000 | } else { | |
1001 | /* | |
1002 | * Look up for all matching entries | |
1003 | * | |
1004 | * findmnt [-l] <source> <target> [-O <options>] [-t <types>] | |
1005 | * findmnt [-l] <spec> [-O <options>] [-t <types>] | |
1006 | */ | |
1007 | again: | |
68164f6c | 1008 | mnt_table_find_next_fs(tb, itr, match_func, NULL, &fs); |
9d67679b KZ |
1009 | |
1010 | if (!fs && | |
1011 | !(flags & FL_NOSWAPMATCH) && | |
1012 | !get_match(COL_TARGET) && get_match(COL_SOURCE)) { | |
1013 | ||
1014 | /* swap 'spec' and target. */ | |
1015 | set_match(COL_TARGET, get_match(COL_SOURCE)); | |
1016 | set_match(COL_SOURCE, NULL); | |
1017 | mnt_reset_iter(itr, -1); | |
1018 | ||
1019 | goto again; | |
1020 | } | |
1021 | } | |
9d67679b | 1022 | |
fdedb45e | 1023 | return fs; |
04fd7a9f KZ |
1024 | } |
1025 | ||
31f67453 KZ |
1026 | /* |
1027 | * Filter out unwanted lines for --list output or top level lines for | |
1028 | * --submounts tree output. | |
1029 | */ | |
68164f6c | 1030 | static int add_matching_lines(struct libmnt_table *tb, |
218a3a94 | 1031 | struct libscols_table *table, int direction) |
049caefd | 1032 | { |
68164f6c KZ |
1033 | struct libmnt_iter *itr = NULL; |
1034 | struct libmnt_fs *fs; | |
049caefd KZ |
1035 | int nlines = 0, rc = -1; |
1036 | ||
1037 | itr = mnt_new_iter(direction); | |
1038 | if (!itr) { | |
1039 | warn(_("failed to initialize libmount iterator")); | |
1040 | goto done; | |
1041 | } | |
1042 | ||
1043 | while((fs = get_next_fs(tb, itr))) { | |
85c9ca5a | 1044 | if ((flags & FL_TREE) || (flags & FL_SUBMOUNTS)) |
218a3a94 | 1045 | rc = create_treenode(table, tb, fs, NULL); |
049caefd | 1046 | else |
218a3a94 | 1047 | rc = !add_line(table, fs, NULL); |
049caefd KZ |
1048 | if (rc) |
1049 | goto done; | |
1050 | nlines++; | |
1051 | if (flags & FL_FIRSTONLY) | |
1052 | break; | |
1053 | flags |= FL_NOSWAPMATCH; | |
1054 | } | |
1055 | ||
1056 | if (nlines) | |
1057 | rc = 0; | |
1058 | done: | |
1059 | mnt_free_iter(itr); | |
1060 | return rc; | |
1061 | } | |
1062 | ||
582a5006 KZ |
1063 | static int poll_match(struct libmnt_fs *fs) |
1064 | { | |
1065 | int rc = match_func(fs, NULL); | |
1066 | ||
1067 | if (rc == 0 && !(flags & FL_NOSWAPMATCH) && | |
1068 | get_match(COL_SOURCE) && !get_match(COL_TARGET)) { | |
1069 | /* | |
1070 | * findmnt --poll /foo | |
cd492186 | 1071 | * The '/foo' maybe source as well as target. |
582a5006 KZ |
1072 | */ |
1073 | const char *str = get_match(COL_SOURCE); | |
1074 | ||
1075 | set_match(COL_TARGET, str); /* swap */ | |
1076 | set_match(COL_SOURCE, NULL); | |
1077 | ||
1078 | rc = match_func(fs, NULL); | |
1079 | ||
1080 | set_match(COL_TARGET, NULL); /* restore */ | |
1081 | set_match(COL_SOURCE, str); | |
1082 | ||
1083 | } | |
1084 | return rc; | |
1085 | } | |
1086 | ||
32e5466a | 1087 | static int poll_table(struct libmnt_table *tb, const char *tabfile, |
218a3a94 | 1088 | int timeout, struct libscols_table *table, int direction) |
32e5466a | 1089 | { |
d1cabd5c | 1090 | FILE *f = NULL; |
32e5466a KZ |
1091 | int rc = -1; |
1092 | struct libmnt_iter *itr = NULL; | |
1093 | struct libmnt_table *tb_new = NULL; | |
1094 | struct libmnt_tabdiff *diff = NULL; | |
1095 | struct pollfd fds[1]; | |
1096 | ||
1097 | tb_new = mnt_new_table(); | |
1098 | if (!tb_new) { | |
1099 | warn(_("failed to initialize libmount table")); | |
1100 | goto done; | |
1101 | } | |
1102 | ||
1103 | itr = mnt_new_iter(direction); | |
1104 | if (!itr) { | |
1105 | warn(_("failed to initialize libmount iterator")); | |
1106 | goto done; | |
1107 | } | |
1108 | ||
1109 | diff = mnt_new_tabdiff(); | |
1110 | if (!diff) { | |
1111 | warn(_("failed to initialize libmount tabdiff")); | |
1112 | goto done; | |
1113 | } | |
1114 | ||
1115 | /* cache is unnecessary to detect changes */ | |
1116 | mnt_table_set_cache(tb, NULL); | |
1117 | mnt_table_set_cache(tb_new, NULL); | |
1118 | ||
1119 | f = fopen(tabfile, "r"); | |
1120 | if (!f) { | |
289dcc90 | 1121 | warn(_("cannot open %s"), tabfile); |
32e5466a KZ |
1122 | goto done; |
1123 | } | |
1124 | ||
1125 | mnt_table_set_parser_errcb(tb_new, parser_errcb); | |
1126 | ||
1127 | fds[0].fd = fileno(f); | |
1128 | fds[0].events = POLLPRI; | |
1129 | ||
1130 | while (1) { | |
1131 | struct libmnt_table *tmp; | |
1132 | struct libmnt_fs *old, *new; | |
582a5006 | 1133 | int change, count; |
32e5466a | 1134 | |
582a5006 KZ |
1135 | count = poll(fds, 1, timeout); |
1136 | if (count == 0) | |
ad38fb9f | 1137 | break; /* timeout */ |
582a5006 | 1138 | if (count < 0) { |
32e5466a KZ |
1139 | warn(_("poll() failed")); |
1140 | goto done; | |
1141 | } | |
1142 | ||
1143 | rewind(f); | |
1144 | rc = mnt_table_parse_stream(tb_new, f, tabfile); | |
1145 | if (!rc) | |
1146 | rc = mnt_diff_tables(diff, tb, tb_new); | |
1147 | if (rc < 0) | |
1148 | goto done; | |
1149 | ||
582a5006 | 1150 | count = 0; |
32e5466a KZ |
1151 | mnt_reset_iter(itr, direction); |
1152 | while(mnt_tabdiff_next_change( | |
1153 | diff, itr, &old, &new, &change) == 0) { | |
1154 | ||
582a5006 KZ |
1155 | if (!has_poll_action(change)) |
1156 | continue; | |
1157 | if (!poll_match(new ? new : old)) | |
1158 | continue; | |
1159 | count++; | |
218a3a94 | 1160 | rc = !add_tabdiff_line(table, new, old, change); |
32e5466a KZ |
1161 | if (rc) |
1162 | goto done; | |
1163 | if (flags & FL_FIRSTONLY) | |
1164 | break; | |
1165 | } | |
1166 | ||
582a5006 | 1167 | if (count) { |
c1d185c7 | 1168 | rc = scols_table_print_range(table, NULL, NULL); |
582a5006 KZ |
1169 | if (rc) |
1170 | goto done; | |
1171 | } | |
32e5466a KZ |
1172 | |
1173 | /* swap tables */ | |
1174 | tmp = tb; | |
1175 | tb = tb_new; | |
1176 | tb_new = tmp; | |
1177 | ||
c1d185c7 | 1178 | /* remove allredy printed lines to reduce memory usage */ |
218a3a94 | 1179 | scols_table_remove_lines(table); |
32e5466a | 1180 | mnt_reset_table(tb_new); |
582a5006 KZ |
1181 | |
1182 | if (count && (flags & FL_FIRSTONLY)) | |
1183 | break; | |
32e5466a KZ |
1184 | } |
1185 | ||
1186 | rc = 0; | |
1187 | done: | |
50fccba1 | 1188 | mnt_unref_table(tb_new); |
32e5466a KZ |
1189 | mnt_free_tabdiff(diff); |
1190 | mnt_free_iter(itr); | |
d1cabd5c KZ |
1191 | if (f) |
1192 | fclose(f); | |
32e5466a KZ |
1193 | return rc; |
1194 | } | |
1195 | ||
bebdda30 KZ |
1196 | static int uniq_fs_target_cmp( |
1197 | struct libmnt_table *tb __attribute__((__unused__)), | |
1198 | struct libmnt_fs *a, | |
1199 | struct libmnt_fs *b) | |
1200 | { | |
1201 | return !mnt_fs_match_target(a, mnt_fs_get_target(b), cache); | |
1202 | } | |
1203 | ||
abafd686 | 1204 | static void __attribute__((__noreturn__)) usage(FILE *out) |
04fd7a9f | 1205 | { |
edaf38cf | 1206 | size_t i; |
9ead0006 | 1207 | |
5cc12c40 | 1208 | fputs(USAGE_HEADER, out); |
9d67679b | 1209 | fprintf(out, _( |
9d67679b KZ |
1210 | " %1$s [options]\n" |
1211 | " %1$s [options] <device> | <mountpoint>\n" | |
1212 | " %1$s [options] <device> <mountpoint>\n" | |
0009f510 | 1213 | " %1$s [options] [--source <device>] [--target <path> | --mountpoint <dir>]\n"), |
9d67679b | 1214 | program_invocation_short_name); |
04fd7a9f | 1215 | |
451dbcfa BS |
1216 | fputs(USAGE_SEPARATOR, out); |
1217 | fputs(_("Find a (mounted) filesystem.\n"), out); | |
1218 | ||
b95c6e88 KZ |
1219 | fputs(USAGE_OPTIONS, out); |
1220 | fputs(_(" -s, --fstab search in static table of filesystems\n"), out); | |
1221 | fputs(_(" -m, --mtab search in table of mounted filesystems\n"), out); | |
1222 | fputs(_(" -k, --kernel search in kernel table of mounted\n" | |
ab5b4f83 | 1223 | " filesystems (default)\n"), out); |
b95c6e88 KZ |
1224 | fputc('\n', out); |
1225 | fputs(_(" -p, --poll[=<list>] monitor changes in table of mounted filesystems\n"), out); | |
1226 | fputs(_(" -w, --timeout <num> upper limit in milliseconds that --poll will block\n"), out); | |
1227 | fputc('\n', out); | |
1228 | ||
1229 | fputs(_(" -A, --all disable all built-in filters, print all filesystems\n"), out); | |
1230 | fputs(_(" -a, --ascii use ASCII chars for tree formatting\n"), out); | |
2b6759df | 1231 | fputs(_(" -b, --bytes print sizes in bytes rather than in human readable format\n"), out); |
ab5b4f83 | 1232 | fputs(_(" -C, --nocanonicalize don't canonicalize when comparing paths\n"), out); |
b95c6e88 KZ |
1233 | fputs(_(" -c, --canonicalize canonicalize printed paths\n"), out); |
1234 | fputs(_(" -D, --df imitate the output of df(1)\n"), out); | |
1235 | fputs(_(" -d, --direction <word> direction of search, 'forward' or 'backward'\n"), out); | |
1236 | fputs(_(" -e, --evaluate convert tags (LABEL,UUID,PARTUUID,PARTLABEL) \n" | |
1237 | " to device names\n"), out); | |
1238 | fputs(_(" -F, --tab-file <path> alternative file for -s, -m or -k options\n"), out); | |
1239 | fputs(_(" -f, --first-only print the first found filesystem only\n"), out); | |
1240 | fputs(_(" -i, --invert invert the sense of matching\n"), out); | |
8449f2cb | 1241 | fputs(_(" -J, --json use JSON output format\n"), out); |
b95c6e88 KZ |
1242 | fputs(_(" -l, --list use list format output\n"), out); |
1243 | fputs(_(" -N, --task <tid> use alternative namespace (/proc/<tid>/mountinfo file)\n"), out); | |
1244 | fputs(_(" -n, --noheadings don't print column headings\n"), out); | |
b95c6e88 KZ |
1245 | fputs(_(" -O, --options <list> limit the set of filesystems by mount options\n"), out); |
1246 | fputs(_(" -o, --output <list> the output columns to be shown\n"), out); | |
1247 | fputs(_(" -P, --pairs use key=\"value\" output format\n"), out); | |
b95c6e88 | 1248 | fputs(_(" -R, --submounts print all submounts for the matching filesystems\n"), out); |
ab5b4f83 | 1249 | fputs(_(" -r, --raw use raw output format\n"), out); |
b95c6e88 KZ |
1250 | fputs(_(" -S, --source <string> the device to mount (by name, maj:min, \n" |
1251 | " LABEL=, UUID=, PARTUUID=, PARTLABEL=)\n"), out); | |
0009f510 KZ |
1252 | fputs(_(" -T, --target <path> the path to the filesystem to use\n"), out); |
1253 | fputs(_(" -M, --mountpoint <dir> the mountpoint directory\n"), out); | |
ab5b4f83 BS |
1254 | fputs(_(" -t, --types <list> limit the set of filesystems by FS types\n"), out); |
1255 | fputs(_(" -U, --uniq ignore filesystems with duplicate target\n"), out); | |
1256 | fputs(_(" -u, --notruncate don't truncate text in columns\n"), out); | |
1257 | fputs(_(" -v, --nofsroot don't print [/dir] for bind or btrfs mounts\n"), out); | |
04fd7a9f | 1258 | |
5cc12c40 SK |
1259 | fputs(USAGE_SEPARATOR, out); |
1260 | fputs(USAGE_HELP, out); | |
1261 | fputs(USAGE_VERSION, out); | |
9ead0006 KZ |
1262 | |
1263 | fprintf(out, _("\nAvailable columns:\n")); | |
1264 | ||
edaf38cf | 1265 | for (i = 0; i < ARRAY_SIZE(infos); i++) |
b152e359 | 1266 | fprintf(out, " %11s %s\n", infos[i].name, _(infos[i].help)); |
9ead0006 | 1267 | |
beda9dd3 | 1268 | fprintf(out, USAGE_MAN_TAIL("findmnt(8)")); |
04fd7a9f KZ |
1269 | |
1270 | exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS); | |
1271 | } | |
1272 | ||
1273 | int main(int argc, char *argv[]) | |
1274 | { | |
68164f6c | 1275 | struct libmnt_table *tb = NULL; |
8c5eba3e | 1276 | char **tabfiles = NULL; |
9d67679b | 1277 | int direction = MNT_ITER_FORWARD; |
40b17508 | 1278 | int c, rc = -1, timeout = -1; |
8c5eba3e | 1279 | int ntabfiles = 0, tabtype = 0; |
c57dca68 | 1280 | char *outarg = NULL; |
40b17508 | 1281 | size_t i; |
fdedb45e | 1282 | |
218a3a94 | 1283 | struct libscols_table *table = NULL; |
fdedb45e | 1284 | |
6c7d5ae9 | 1285 | static const struct option longopts[] = { |
cd4ed46f | 1286 | { "all", 0, 0, 'A' }, |
9d67679b | 1287 | { "ascii", 0, 0, 'a' }, |
2b6759df | 1288 | { "bytes", 0, 0, 'b' }, |
04fd7a9f KZ |
1289 | { "canonicalize", 0, 0, 'c' }, |
1290 | { "direction", 1, 0, 'd' }, | |
eda399b9 | 1291 | { "df", 0, 0, 'D' }, |
04fd7a9f | 1292 | { "evaluate", 0, 0, 'e' }, |
9d67679b | 1293 | { "first-only", 0, 0, 'f' }, |
2f1ac44b | 1294 | { "fstab", 0, 0, 's' }, |
04fd7a9f KZ |
1295 | { "help", 0, 0, 'h' }, |
1296 | { "invert", 0, 0, 'i' }, | |
8449f2cb | 1297 | { "json", 0, 0, 'J' }, |
9d67679b KZ |
1298 | { "kernel", 0, 0, 'k' }, |
1299 | { "list", 0, 0, 'l' }, | |
0009f510 | 1300 | { "mountpoint", 1, 0, 'M' }, |
9d67679b KZ |
1301 | { "mtab", 0, 0, 'm' }, |
1302 | { "noheadings", 0, 0, 'n' }, | |
1303 | { "notruncate", 0, 0, 'u' }, | |
04fd7a9f | 1304 | { "options", 1, 0, 'O' }, |
9d67679b | 1305 | { "output", 1, 0, 'o' }, |
582a5006 | 1306 | { "poll", 2, 0, 'p' }, |
49e9fd3a | 1307 | { "pairs", 0, 0, 'P' }, |
9d67679b | 1308 | { "raw", 0, 0, 'r' }, |
04fd7a9f | 1309 | { "types", 1, 0, 't' }, |
097e7f2f | 1310 | { "nocanonicalize", 0, 0, 'C' }, |
395eb05d | 1311 | { "nofsroot", 0, 0, 'v' }, |
049caefd | 1312 | { "submounts", 0, 0, 'R' }, |
9d67679b | 1313 | { "source", 1, 0, 'S' }, |
2f1ac44b | 1314 | { "tab-file", 1, 0, 'F' }, |
c7fcc830 | 1315 | { "task", 1, 0, 'N' }, |
9d67679b | 1316 | { "target", 1, 0, 'T' }, |
ad38fb9f | 1317 | { "timeout", 1, 0, 'w' }, |
bebdda30 | 1318 | { "uniq", 0, 0, 'U' }, |
5cc12c40 | 1319 | { "version", 0, 0, 'V' }, |
9d67679b | 1320 | |
04fd7a9f KZ |
1321 | { NULL, 0, 0, 0 } |
1322 | }; | |
1323 | ||
f1622b57 | 1324 | static const ul_excl_t excl[] = { /* rows and cols in in ASCII order */ |
097e7f2f KZ |
1325 | { 'C', 'c'}, /* [no]canonicalize */ |
1326 | { 'C', 'e' }, /* nocanonicalize, evaluate */ | |
8449f2cb | 1327 | { 'J', 'P', 'r' }, /* json,pairs,raw */ |
0009f510 | 1328 | { 'M', 'T' }, /* mountpoint, target */ |
f1622b57 KZ |
1329 | { 'N','k','m','s' }, /* task,kernel,mtab,fstab */ |
1330 | { 'P','l','r' }, /* pairs,list,raw */ | |
1331 | { 'm','p','s' }, /* mtab,poll,fstab */ | |
1332 | { 0 } | |
1333 | }; | |
1334 | int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT; | |
1335 | ||
04fd7a9f KZ |
1336 | setlocale(LC_ALL, ""); |
1337 | bindtextdomain(PACKAGE, LOCALEDIR); | |
1338 | textdomain(PACKAGE); | |
c05a80ca | 1339 | atexit(close_stdout); |
04fd7a9f | 1340 | |
9d67679b | 1341 | /* default output format */ |
85c9ca5a | 1342 | flags |= FL_TREE; |
04fd7a9f | 1343 | |
9d67679b | 1344 | while ((c = getopt_long(argc, argv, |
8449f2cb | 1345 | "AabCcDd:ehiJfF:o:O:p::PklmM:nN:rst:uvRS:T:Uw:V", |
d466c6a1 | 1346 | longopts, NULL)) != -1) { |
f1622b57 KZ |
1347 | |
1348 | err_exclusive_options(c, longopts, excl, excl_st); | |
1349 | ||
04fd7a9f | 1350 | switch(c) { |
cd4ed46f KZ |
1351 | case 'A': |
1352 | flags |= FL_ALL; | |
1353 | break; | |
9d67679b | 1354 | case 'a': |
85c9ca5a | 1355 | flags |= FL_ASCII; |
9d67679b | 1356 | break; |
2b6759df KZ |
1357 | case 'b': |
1358 | flags |= FL_BYTES; | |
1359 | break; | |
097e7f2f KZ |
1360 | case 'C': |
1361 | flags |= FL_NOCACHE; | |
1362 | break; | |
04fd7a9f KZ |
1363 | case 'c': |
1364 | flags |= FL_CANONICALIZE; | |
1365 | break; | |
eda399b9 | 1366 | case 'D': |
85c9ca5a | 1367 | flags &= ~FL_TREE; |
cd4ed46f | 1368 | flags |= FL_DF; |
eda399b9 | 1369 | break; |
04fd7a9f | 1370 | case 'd': |
4e6bd74c | 1371 | if (!strcmp(optarg, "forward")) |
04fd7a9f | 1372 | direction = MNT_ITER_FORWARD; |
4e6bd74c | 1373 | else if (!strcmp(optarg, "backward")) |
04fd7a9f KZ |
1374 | direction = MNT_ITER_BACKWARD; |
1375 | else | |
1376 | errx(EXIT_FAILURE, | |
8e350e48 | 1377 | _("unknown direction '%s'"), optarg); |
04fd7a9f KZ |
1378 | break; |
1379 | case 'e': | |
1380 | flags |= FL_EVALUATE; | |
1381 | break; | |
1382 | case 'h': | |
1383 | usage(stdout); | |
1384 | break; | |
1385 | case 'i': | |
1386 | flags |= FL_INVERT; | |
1387 | break; | |
8449f2cb KZ |
1388 | case 'J': |
1389 | flags |= FL_JSON; | |
1390 | break; | |
9d67679b | 1391 | case 'f': |
04fd7a9f KZ |
1392 | flags |= FL_FIRSTONLY; |
1393 | break; | |
2f1ac44b | 1394 | case 'F': |
8c5eba3e | 1395 | tabfiles = append_tabfile(tabfiles, &ntabfiles, optarg); |
2f1ac44b | 1396 | break; |
9d67679b | 1397 | case 'u': |
32e5466a | 1398 | disable_columns_truncate(); |
9d67679b | 1399 | break; |
04fd7a9f | 1400 | case 'o': |
c57dca68 | 1401 | outarg = optarg; |
04fd7a9f KZ |
1402 | break; |
1403 | case 'O': | |
9d67679b | 1404 | set_match(COL_OPTIONS, optarg); |
04fd7a9f | 1405 | break; |
32e5466a | 1406 | case 'p': |
bdc3ed66 | 1407 | if (optarg) { |
c87638ad | 1408 | nactions = string_to_idarray(optarg, |
bdc3ed66 KZ |
1409 | actions, ARRAY_SIZE(actions), |
1410 | poll_action_name_to_id); | |
1411 | if (nactions < 0) | |
1412 | exit(EXIT_FAILURE); | |
1413 | } | |
32e5466a | 1414 | flags |= FL_POLL; |
85c9ca5a | 1415 | flags &= ~FL_TREE; |
32e5466a | 1416 | break; |
49e9fd3a | 1417 | case 'P': |
85c9ca5a KZ |
1418 | flags |= FL_EXPORT; |
1419 | flags &= ~FL_TREE; | |
49e9fd3a | 1420 | break; |
fdedb45e | 1421 | case 'm': /* mtab */ |
8c5eba3e | 1422 | tabtype = TABTYPE_MTAB; |
85c9ca5a | 1423 | flags &= ~FL_TREE; |
04fd7a9f | 1424 | break; |
fdedb45e | 1425 | case 's': /* fstab */ |
8c5eba3e | 1426 | tabtype = TABTYPE_FSTAB; |
85c9ca5a | 1427 | flags &= ~FL_TREE; |
04fd7a9f | 1428 | break; |
fdedb45e | 1429 | case 'k': /* kernel (mountinfo) */ |
8c5eba3e | 1430 | tabtype = TABTYPE_KERNEL; |
04fd7a9f KZ |
1431 | break; |
1432 | case 't': | |
9d67679b KZ |
1433 | set_match(COL_FSTYPE, optarg); |
1434 | break; | |
1435 | case 'r': | |
85c9ca5a KZ |
1436 | flags &= ~FL_TREE; /* disable the default */ |
1437 | flags |= FL_RAW; /* enable raw */ | |
9d67679b KZ |
1438 | break; |
1439 | case 'l': | |
85c9ca5a | 1440 | flags &= ~FL_TREE; /* disable the default */ |
9d67679b KZ |
1441 | break; |
1442 | case 'n': | |
85c9ca5a | 1443 | flags |= FL_NOHEADINGS; |
9d67679b | 1444 | break; |
c7fcc830 | 1445 | case 'N': |
c7fcc830 KZ |
1446 | tabtype = TABTYPE_KERNEL; |
1447 | tabfiles = append_pid_tabfile(tabfiles, &ntabfiles, | |
1448 | strtou32_or_err(optarg, | |
1449 | _("invalid TID argument"))); | |
1450 | break; | |
b2214e1f KZ |
1451 | case 'v': |
1452 | flags |= FL_NOFSROOT; | |
1453 | break; | |
049caefd KZ |
1454 | case 'R': |
1455 | flags |= FL_SUBMOUNTS; | |
1456 | break; | |
9d67679b | 1457 | case 'S': |
cd492186 | 1458 | set_source_match(optarg); |
9d67679b KZ |
1459 | flags |= FL_NOSWAPMATCH; |
1460 | break; | |
0009f510 KZ |
1461 | case 'M': |
1462 | flags |= FL_STRICTTARGET; | |
1463 | /* fallthrough */ | |
9d67679b KZ |
1464 | case 'T': |
1465 | set_match(COL_TARGET, optarg); | |
1466 | flags |= FL_NOSWAPMATCH; | |
04fd7a9f | 1467 | break; |
bebdda30 KZ |
1468 | case 'U': |
1469 | flags |= FL_UNIQ; | |
1470 | break; | |
ad38fb9f | 1471 | case 'w': |
db41a429 | 1472 | timeout = strtos32_or_err(optarg, _("invalid timeout argument")); |
ad38fb9f | 1473 | break; |
5cc12c40 SK |
1474 | case 'V': |
1475 | printf(UTIL_LINUX_VERSION); | |
1476 | return EXIT_SUCCESS; | |
04fd7a9f KZ |
1477 | default: |
1478 | usage(stderr); | |
1479 | break; | |
1480 | } | |
1481 | } | |
1482 | ||
cd4ed46f | 1483 | if (!ncolumns && (flags & FL_DF)) { |
edaf38cf KZ |
1484 | add_column(columns, ncolumns++, COL_SOURCE); |
1485 | add_column(columns, ncolumns++, COL_FSTYPE); | |
1486 | add_column(columns, ncolumns++, COL_SIZE); | |
1487 | add_column(columns, ncolumns++, COL_USED); | |
1488 | add_column(columns, ncolumns++, COL_AVAIL); | |
1489 | add_column(columns, ncolumns++, COL_USEPERC); | |
1490 | add_column(columns, ncolumns++, COL_TARGET); | |
eda399b9 DR |
1491 | } |
1492 | ||
32e5466a KZ |
1493 | /* default columns */ |
1494 | if (!ncolumns) { | |
1495 | if (flags & FL_POLL) | |
edaf38cf | 1496 | add_column(columns, ncolumns++, COL_ACTION); |
32e5466a | 1497 | |
edaf38cf KZ |
1498 | add_column(columns, ncolumns++, COL_TARGET); |
1499 | add_column(columns, ncolumns++, COL_SOURCE); | |
1500 | add_column(columns, ncolumns++, COL_FSTYPE); | |
1501 | add_column(columns, ncolumns++, COL_OPTIONS); | |
32e5466a KZ |
1502 | } |
1503 | ||
c57dca68 MB |
1504 | if (outarg && string_add_to_idarray(outarg, columns, ARRAY_SIZE(columns), |
1505 | &ncolumns, column_name_to_id) < 0) | |
1506 | return EXIT_FAILURE; | |
1507 | ||
8c5eba3e KZ |
1508 | if (!tabtype) |
1509 | tabtype = TABTYPE_KERNEL; | |
2f1ac44b | 1510 | |
f1622b57 KZ |
1511 | if ((flags & FL_POLL) && ntabfiles > 1) |
1512 | errx(EXIT_FAILURE, _("--poll accepts only one file, but more specified by --tab-file")); | |
b2214e1f | 1513 | |
9d67679b KZ |
1514 | if (optind < argc && (get_match(COL_SOURCE) || get_match(COL_TARGET))) |
1515 | errx(EXIT_FAILURE, _( | |
1516 | "options --target and --source can't be used together " | |
1517 | "with command line element that is not an option")); | |
1518 | ||
04fd7a9f | 1519 | if (optind < argc) |
cd492186 | 1520 | set_source_match(argv[optind++]); /* dev/tag/mountpoint/maj:min */ |
04fd7a9f | 1521 | if (optind < argc) |
9d67679b | 1522 | set_match(COL_TARGET, argv[optind++]); /* mountpoint */ |
04fd7a9f | 1523 | |
049caefd KZ |
1524 | if ((flags & FL_SUBMOUNTS) && is_listall_mode()) |
1525 | /* don't care about submounts if list all mounts */ | |
1526 | flags &= ~FL_SUBMOUNTS; | |
1527 | ||
31f67453 KZ |
1528 | if (!(flags & FL_SUBMOUNTS) && ((flags & FL_FIRSTONLY) |
1529 | || get_match(COL_TARGET) | |
1530 | || get_match(COL_SOURCE) | |
1531 | || get_match(COL_MAJMIN))) | |
85c9ca5a | 1532 | flags &= ~FL_TREE; |
fdedb45e | 1533 | |
ac808156 KZ |
1534 | if (!(flags & FL_NOSWAPMATCH) && |
1535 | !get_match(COL_TARGET) && get_match(COL_SOURCE)) { | |
1536 | /* | |
1537 | * Check if we can swap source and target, it's | |
1538 | * not possible if the source is LABEL=/UUID= | |
1539 | */ | |
1540 | const char *x = get_match(COL_SOURCE); | |
1541 | ||
090b5e84 KZ |
1542 | if (!strncmp(x, "LABEL=", 6) || !strncmp(x, "UUID=", 5) || |
1543 | !strncmp(x, "PARTLABEL=", 10) || !strncmp(x, "PARTUUID=", 9)) | |
ac808156 KZ |
1544 | flags |= FL_NOSWAPMATCH; |
1545 | } | |
1546 | ||
fdedb45e KZ |
1547 | /* |
1548 | * initialize libmount | |
1549 | */ | |
ac808156 | 1550 | mnt_init_debug(0); |
710ed55d | 1551 | scols_init_debug(0); |
ac808156 | 1552 | |
8c5eba3e | 1553 | tb = parse_tabfiles(tabfiles, ntabfiles, tabtype); |
04fd7a9f | 1554 | if (!tb) |
fdedb45e | 1555 | goto leave; |
04fd7a9f | 1556 | |
9c277ede KZ |
1557 | if (tabtype == TABTYPE_MTAB && tab_is_kernel(tb)) |
1558 | tabtype = TABTYPE_KERNEL; | |
1559 | ||
85c9ca5a KZ |
1560 | if ((flags & FL_TREE) && (ntabfiles > 1 || !tab_is_tree(tb))) |
1561 | flags &= ~FL_TREE; | |
2f1ac44b | 1562 | |
097e7f2f KZ |
1563 | if (!(flags & FL_NOCACHE)) { |
1564 | cache = mnt_new_cache(); | |
1565 | if (!cache) { | |
1566 | warn(_("failed to initialize libmount cache")); | |
1567 | goto leave; | |
1568 | } | |
1569 | mnt_table_set_cache(tb, cache); | |
fb329bbc ER |
1570 | |
1571 | if (tabtype != TABTYPE_KERNEL) | |
1572 | cache_set_targets(cache); | |
fdedb45e | 1573 | } |
04fd7a9f | 1574 | |
bebdda30 KZ |
1575 | if (flags & FL_UNIQ) |
1576 | mnt_table_uniq_fs(tb, MNT_UNIQ_KEEPTREE, uniq_fs_target_cmp); | |
4bfd4bff | 1577 | |
fdedb45e | 1578 | /* |
218a3a94 | 1579 | * initialize output formatting (libsmartcols.h) |
fdedb45e | 1580 | */ |
0925a9dd | 1581 | table = scols_new_table(); |
218a3a94 | 1582 | if (!table) { |
fdedb45e KZ |
1583 | warn(_("failed to initialize output table")); |
1584 | goto leave; | |
1585 | } | |
0925a9dd KZ |
1586 | scols_table_enable_raw(table, !!(flags & FL_RAW)); |
1587 | scols_table_enable_export(table, !!(flags & FL_EXPORT)); | |
8449f2cb | 1588 | scols_table_enable_json(table, !!(flags & FL_JSON)); |
0925a9dd KZ |
1589 | scols_table_enable_ascii(table, !!(flags & FL_ASCII)); |
1590 | scols_table_enable_noheadings(table, !!(flags & FL_NOHEADINGS)); | |
ac808156 | 1591 | |
8449f2cb KZ |
1592 | if (flags & FL_JSON) |
1593 | scols_table_set_name(table, "filesystems"); | |
1594 | ||
fdedb45e | 1595 | for (i = 0; i < ncolumns; i++) { |
32e5466a KZ |
1596 | int fl = get_column_flags(i); |
1597 | int id = get_column_id(i); | |
1598 | ||
85c9ca5a | 1599 | if (!(flags & FL_TREE)) |
218a3a94 | 1600 | fl &= ~SCOLS_FL_TREE; |
04fd7a9f | 1601 | |
32e5466a | 1602 | if (!(flags & FL_POLL) && is_tabdiff_column(id)) { |
77a1c5f7 | 1603 | warnx(_("%s column is requested, but --poll " |
32e5466a KZ |
1604 | "is not enabled"), get_column_name(i)); |
1605 | goto leave; | |
1606 | } | |
218a3a94 | 1607 | if (!scols_table_new_column(table, get_column_name(i), |
fdedb45e KZ |
1608 | get_column_whint(i), fl)) { |
1609 | warn(_("failed to initialize output column")); | |
1610 | goto leave; | |
9d67679b | 1611 | } |
fdedb45e | 1612 | } |
9d67679b | 1613 | |
fdedb45e KZ |
1614 | /* |
1615 | * Fill in data to the output table | |
1616 | */ | |
275c9a48 | 1617 | if (flags & FL_POLL) { |
8c5eba3e | 1618 | /* poll mode (accept the first tabfile only) */ |
218a3a94 | 1619 | rc = poll_table(tb, tabfiles ? *tabfiles : _PATH_PROC_MOUNTINFO, timeout, table, direction); |
32e5466a | 1620 | |
85c9ca5a | 1621 | } else if ((flags & FL_TREE) && !(flags & FL_SUBMOUNTS)) { |
049caefd | 1622 | /* whole tree */ |
218a3a94 | 1623 | rc = create_treenode(table, tb, NULL, NULL); |
31f67453 | 1624 | } else { |
049caefd | 1625 | /* whole lits of sub-tree */ |
218a3a94 | 1626 | rc = add_matching_lines(tb, table, direction); |
fdedb45e | 1627 | |
3e373967 KZ |
1628 | if (rc != 0 |
1629 | && tabtype == TABTYPE_KERNEL | |
1630 | && (flags & FL_NOSWAPMATCH) | |
0009f510 | 1631 | && !(flags & FL_STRICTTARGET) |
3e373967 KZ |
1632 | && get_match(COL_TARGET)) { |
1633 | /* | |
1634 | * Found nothing, maybe the --target is regular file, | |
1635 | * try it again with extra functionality for target | |
1636 | * match | |
1637 | */ | |
cd41b385 | 1638 | enable_extra_target_match(tb); |
218a3a94 | 1639 | rc = add_matching_lines(tb, table, direction); |
3e373967 KZ |
1640 | } |
1641 | } | |
1642 | ||
fdedb45e | 1643 | /* |
32e5466a | 1644 | * Print the output table for non-poll modes |
fdedb45e | 1645 | */ |
32e5466a | 1646 | if (!rc && !(flags & FL_POLL)) |
218a3a94 | 1647 | scols_print_table(table); |
fdedb45e | 1648 | leave: |
218a3a94 | 1649 | scols_unref_table(table); |
fdedb45e | 1650 | |
50fccba1 | 1651 | mnt_unref_table(tb); |
6195f9e6 | 1652 | mnt_unref_cache(cache); |
50fccba1 | 1653 | |
8c5eba3e | 1654 | free(tabfiles); |
e346233e KZ |
1655 | #ifdef HAVE_LIBUDEV |
1656 | udev_unref(udev); | |
1657 | #endif | |
049caefd | 1658 | return rc ? EXIT_FAILURE : EXIT_SUCCESS; |
04fd7a9f | 1659 | } |