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Commit | Line | Data |
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22853e4a | 1 | /* |
c4ecaf21 | 2 | * partx: tell the kernel about your disk's partitions |
22853e4a KZ |
3 | * [This is not an fdisk - adding and removing partitions |
4 | * is not a change of the disk, but just telling the kernel | |
5 | * about presence and numbering of on-disk partitions.] | |
6 | * | |
22853e4a | 7 | * aeb, 2000-03-21 -- sah is 42 now |
c4ecaf21 DB |
8 | * |
9 | * Copyright (C) 2010 Davidlohr Bueso <dave@gnu.org> | |
a9485396 | 10 | * Rewritten to use libblkid for util-linux |
c4ecaf21 | 11 | * based on ideas from Karel Zak <kzak@redhat.com> |
22853e4a KZ |
12 | */ |
13 | ||
14 | #include <stdio.h> | |
22853e4a KZ |
15 | #include <errno.h> |
16 | #include <stdlib.h> | |
c4ecaf21 | 17 | #include <ctype.h> |
22853e4a | 18 | #include <getopt.h> |
1d4ad1de | 19 | #include <unistd.h> |
c4ecaf21 | 20 | #include <assert.h> |
c4ecaf21 DB |
21 | #include <dirent.h> |
22 | ||
23 | #include <blkid.h> | |
0d518f34 | 24 | |
1aff9b62 | 25 | #include "c.h" |
c4ecaf21 DB |
26 | #include "pathnames.h" |
27 | #include "nls.h" | |
28 | #include "tt.h" | |
0d518f34 | 29 | #include "blkdev.h" |
c4ecaf21 DB |
30 | #include "strutils.h" |
31 | #include "xalloc.h" | |
22853e4a | 32 | #include "partx.h" |
a88268b8 | 33 | #include "sysfs.h" |
0e938113 | 34 | #include "loopdev.h" |
741a5b10 | 35 | #include "at.h" |
22853e4a | 36 | |
c4ecaf21 DB |
37 | /* this is the default upper limit, could be modified by --nr */ |
38 | #define SLICES_MAX 256 | |
39 | ||
40 | /* all the columns (-o option) */ | |
41 | enum { | |
42 | COL_PARTNO, | |
43 | COL_START, | |
44 | COL_END, | |
45 | COL_SECTORS, | |
46 | COL_SIZE, | |
47 | COL_NAME, | |
48 | COL_UUID, | |
49 | COL_TYPE, | |
5de966b3 KZ |
50 | COL_FLAGS, |
51 | COL_SCHEME, | |
c4ecaf21 | 52 | }; |
22853e4a | 53 | |
c4ecaf21 DB |
54 | enum { |
55 | ACT_LIST = 1, | |
56 | ACT_SHOW, | |
57 | ACT_ADD, | |
58 | ACT_DELETE | |
59 | }; | |
60 | ||
61 | enum { | |
62 | FL_BYTES = (1 << 1) | |
63 | }; | |
64 | ||
65 | /* column names */ | |
66 | struct colinfo { | |
67 | const char *name; /* header */ | |
68 | double whint; /* width hint (N < 1 is in percent of termwidth) */ | |
69 | int flags; /* TT_FL_* */ | |
70 | const char *help; | |
71 | }; | |
22853e4a | 72 | |
c4ecaf21 | 73 | /* columns descriptions */ |
10ebfeea | 74 | struct colinfo infos[] = { |
5de966b3 | 75 | [COL_PARTNO] = { "NR", 0.25, TT_FL_RIGHT, N_("partition number") }, |
c4ecaf21 DB |
76 | [COL_START] = { "START", 0.30, TT_FL_RIGHT, N_("start of the partition in sectors") }, |
77 | [COL_END] = { "END", 0.30, TT_FL_RIGHT, N_("end of the partition in sectors") }, | |
78 | [COL_SECTORS] = { "SECTORS", 0.30, TT_FL_RIGHT, N_("number of sectors") }, | |
79 | [COL_SIZE] = { "SIZE", 0.30, TT_FL_RIGHT, N_("human readable size") }, | |
80 | [COL_NAME] = { "NAME", 0.30, TT_FL_TRUNC, N_("partition name") }, | |
81 | [COL_UUID] = { "UUID", 36, 0, N_("partition UUID")}, | |
5de966b3 KZ |
82 | [COL_SCHEME] = { "SCHEME", 0.1, TT_FL_TRUNC, N_("partition table type (dos, gpt, ...)")}, |
83 | [COL_FLAGS] = { "FLAGS", 0.1, TT_FL_TRUNC, N_("partition flags")}, | |
84 | [COL_TYPE] = { "TYPE", 1, TT_FL_RIGHT, N_("partition type hex or uuid")}, | |
c4ecaf21 | 85 | }; |
10ebfeea DB |
86 | |
87 | #define NCOLS ARRAY_SIZE(infos) | |
88 | ||
c4ecaf21 | 89 | /* array with IDs of enabled columns */ |
10ebfeea | 90 | static int columns[NCOLS], ncolumns; |
c4ecaf21 DB |
91 | |
92 | static int verbose; | |
93 | static int partx_flags; | |
0e938113 DB |
94 | static struct loopdev_cxt lc; |
95 | static int loopdev; | |
22853e4a | 96 | |
0e938113 DB |
97 | static void assoc_loopdev(const char *fname) |
98 | { | |
99 | int rc; | |
100 | ||
101 | loopcxt_init(&lc, 0); | |
102 | ||
103 | rc = loopcxt_find_unused(&lc); | |
104 | if (rc) | |
105 | err(EXIT_FAILURE, _("%s: failed to find unused loop device"), | |
106 | fname); | |
107 | ||
108 | if (verbose) | |
109 | printf(_("Trying to use '%s' for the loop device\n"), | |
110 | loopcxt_get_device(&lc)); | |
111 | ||
112 | if (loopcxt_set_backing_file(&lc, fname)) | |
113 | err(EXIT_FAILURE, _("%s: failed to set backing file"), fname); | |
114 | ||
115 | rc = loopcxt_setup_device(&lc); | |
116 | ||
117 | if (rc == -EBUSY) | |
118 | err(EXIT_FAILURE, _("%s: failed to setup loop device"), fname); | |
119 | ||
120 | loopdev = 1; | |
121 | } | |
22853e4a | 122 | |
c4ecaf21 | 123 | static inline int get_column_id(int num) |
1d4ad1de | 124 | { |
10ebfeea | 125 | assert(ARRAY_SIZE(columns) == NCOLS); |
c4ecaf21 | 126 | assert(num < ncolumns); |
10ebfeea | 127 | assert(columns[num] < (int) NCOLS); |
c4ecaf21 | 128 | return columns[num]; |
22853e4a KZ |
129 | } |
130 | ||
c4ecaf21 | 131 | static inline struct colinfo *get_column_info(int num) |
1d4ad1de | 132 | { |
c4ecaf21 | 133 | return &infos[ get_column_id(num) ]; |
22853e4a KZ |
134 | } |
135 | ||
c4ecaf21 DB |
136 | static int column_name_to_id(const char *name, size_t namesz) |
137 | { | |
10ebfeea | 138 | size_t i; |
22853e4a | 139 | |
c4ecaf21 | 140 | assert(name); |
22853e4a | 141 | |
10ebfeea | 142 | for (i = 0; i < NCOLS; i++) { |
c4ecaf21 | 143 | const char *cn = infos[i].name; |
22853e4a | 144 | |
c4ecaf21 DB |
145 | if (!strncasecmp(name, cn, namesz) && !*(cn + namesz)) |
146 | return i; | |
22853e4a | 147 | } |
c4ecaf21 DB |
148 | warnx(_("unknown column: %s"), name); |
149 | return -1; | |
150 | } | |
22853e4a | 151 | |
c4ecaf21 DB |
152 | /* |
153 | * Given a partition return the corresponding partition number. | |
154 | * | |
155 | * Note that this function tries to use sysfs, otherwise it assumes that the | |
156 | * last characters are always numeric (sda1, sdc20, etc). | |
c4ecaf21 DB |
157 | */ |
158 | static int get_partno_from_device(char *partition, dev_t devno) | |
159 | { | |
160 | int partno = 0; | |
161 | size_t sz; | |
162 | char *p, *end = NULL; | |
163 | ||
164 | assert(partition); | |
165 | ||
166 | if (devno) { | |
a88268b8 | 167 | struct sysfs_cxt cxt; |
43e3f054 | 168 | int rc; |
a88268b8 | 169 | |
5bfbbc78 KZ |
170 | if (sysfs_init(&cxt, devno, NULL)) |
171 | goto err; | |
172 | ||
43e3f054 KZ |
173 | rc = sysfs_read_int(&cxt, "partition", &partno); |
174 | sysfs_deinit(&cxt); | |
175 | ||
176 | if (rc == 0) | |
c4ecaf21 DB |
177 | return partno; |
178 | } | |
22853e4a | 179 | |
c4ecaf21 DB |
180 | sz = strlen(partition); |
181 | p = partition + sz - 1; | |
22853e4a | 182 | |
c4ecaf21 DB |
183 | if (!isdigit((unsigned int) *p)) |
184 | goto err; | |
22853e4a | 185 | |
c4ecaf21 DB |
186 | while (isdigit((unsigned int) *(p - 1))) p--; |
187 | ||
188 | errno = 0; | |
189 | partno = strtol(p, &end, 10); | |
190 | if (errno || !end || *end || p == end) | |
191 | goto err; | |
192 | ||
193 | return partno; | |
194 | err: | |
195 | errx(EXIT_FAILURE, _("%s: failed to get partition number"), partition); | |
196 | } | |
197 | ||
198 | static int get_max_partno(const char *disk, dev_t devno) | |
199 | { | |
741a5b10 | 200 | char path[PATH_MAX], *parent, *dirname = NULL; |
c4ecaf21 DB |
201 | struct stat st; |
202 | DIR *dir; | |
203 | struct dirent *d; | |
204 | int partno = 0; | |
205 | ||
206 | if (!devno && !stat(disk, &st)) | |
207 | devno = st.st_rdev; | |
208 | if (!devno) | |
209 | goto dflt; | |
210 | parent = strrchr(disk, '/'); | |
211 | if (!parent) | |
212 | goto dflt; | |
213 | parent++; | |
214 | ||
215 | snprintf(path, sizeof(path), _PATH_SYS_DEVBLOCK "/%d:%d/", | |
216 | major(devno), minor(devno)); | |
217 | ||
218 | dir = opendir(path); | |
219 | if (!dir) | |
220 | goto dflt; | |
221 | ||
741a5b10 KZ |
222 | dirname = xstrdup(path); |
223 | ||
224 | while ((d = readdir(dir))) { | |
c4ecaf21 DB |
225 | int fd; |
226 | ||
227 | if (!strcmp(d->d_name, ".") || | |
228 | !strcmp(d->d_name, "..")) | |
229 | continue; | |
230 | #ifdef _DIRENT_HAVE_D_TYPE | |
231 | if (d->d_type != DT_DIR) | |
232 | continue; | |
233 | #endif | |
234 | if (strncmp(parent, d->d_name, strlen(parent))) | |
235 | continue; | |
236 | snprintf(path, sizeof(path), "%s/partition", d->d_name); | |
237 | ||
741a5b10 | 238 | fd = open_at(dirfd(dir), dirname, path, O_RDONLY); |
c4ecaf21 DB |
239 | if (fd) { |
240 | int x = 0; | |
241 | FILE *f = fdopen(fd, "r"); | |
242 | if (f) { | |
243 | if (fscanf(f, "%d", &x) == 1 && x > partno) | |
244 | partno = x; | |
245 | fclose(f); | |
22853e4a | 246 | } |
22853e4a | 247 | } |
22853e4a KZ |
248 | } |
249 | ||
741a5b10 | 250 | free(dirname); |
c4ecaf21 DB |
251 | closedir(dir); |
252 | return partno; | |
253 | dflt: | |
254 | return SLICES_MAX; | |
255 | } | |
256 | ||
257 | static void del_parts_warnx(const char *device, int first, int last) | |
258 | { | |
259 | if (first == last) | |
260 | warnx(_("%s: error deleting partition %d"), device, first); | |
261 | else | |
262 | warnx(_("%s: error deleting partitions %d-%d"), | |
263 | device, first, last); | |
264 | } | |
265 | ||
266 | static int del_parts(int fd, const char *device, dev_t devno, | |
267 | int lower, int upper) | |
268 | { | |
269 | int rc = 0, i, errfirst = 0, errlast = 0; | |
270 | ||
271 | assert(fd >= 0); | |
272 | assert(device); | |
273 | ||
274 | if (!lower) | |
275 | lower = 1; | |
276 | if (!upper || lower < 0 || upper < 0) { | |
277 | int n = get_max_partno(device, devno); | |
278 | if (!upper) | |
279 | upper = n; | |
280 | else if (upper < 0) | |
281 | upper = n + upper + 1; | |
282 | if (lower < 0) | |
283 | lower = n + lower + 1; | |
284 | } | |
285 | if (lower > upper) { | |
144df9a2 | 286 | warnx(_("specified range <%d:%d> " |
c4ecaf21 DB |
287 | "does not make sense"), lower, upper); |
288 | return -1; | |
289 | } | |
290 | ||
291 | for (i = lower; i <= upper; i++) { | |
ab025087 PS |
292 | rc = partx_del_partition(fd, i); |
293 | if (rc == 0) { | |
c4ecaf21 DB |
294 | if (verbose) |
295 | printf(_("%s: partition #%d removed\n"), device, i); | |
296 | continue; | |
ab025087 PS |
297 | } else if (errno == ENXIO) { |
298 | if (verbose) | |
299 | printf(_("%s: partition #%d already doesn't exist\n"), device, i); | |
300 | continue; | |
c4ecaf21 DB |
301 | } |
302 | rc = -1; | |
303 | if (verbose) | |
144df9a2 | 304 | warn(_("%s: deleting partition #%d failed"), device, i); |
c4ecaf21 DB |
305 | if (!errfirst) |
306 | errlast = errfirst = i; | |
307 | else if (errlast + 1 == i) | |
308 | errlast++; | |
309 | else { | |
310 | del_parts_warnx(device, errfirst, errlast); | |
311 | errlast = errfirst = i; | |
22853e4a | 312 | } |
22853e4a KZ |
313 | } |
314 | ||
c4ecaf21 DB |
315 | if (errfirst) |
316 | del_parts_warnx(device, errfirst, errlast); | |
317 | return rc; | |
318 | } | |
319 | ||
0e938113 | 320 | |
c4ecaf21 DB |
321 | static void add_parts_warnx(const char *device, int first, int last) |
322 | { | |
323 | if (first == last) | |
324 | warnx(_("%s: error adding partition %d"), device, first); | |
325 | else | |
326 | warnx(_("%s: error adding partitions %d-%d"), | |
327 | device, first, last); | |
328 | } | |
329 | ||
330 | static int add_parts(int fd, const char *device, | |
0e938113 | 331 | blkid_partlist ls, int lower, int upper) |
c4ecaf21 DB |
332 | { |
333 | int i, nparts, rc = 0, errfirst = 0, errlast = 0; | |
334 | ||
335 | assert(fd >= 0); | |
336 | assert(device); | |
337 | assert(ls); | |
338 | ||
339 | nparts = blkid_partlist_numof_partitions(ls); | |
340 | ||
341 | for (i = 0; i < nparts; i++) { | |
342 | blkid_partition par = blkid_partlist_get_partition(ls, i); | |
343 | int n = blkid_partition_get_partno(par); | |
344 | uintmax_t start, size; | |
345 | ||
346 | if (lower && n < lower) | |
347 | continue; | |
348 | if (upper && n > upper) | |
349 | continue; | |
350 | ||
351 | start = blkid_partition_get_start(par); | |
352 | size = blkid_partition_get_size(par); | |
353 | ||
354 | if (blkid_partition_is_extended(par)) | |
355 | /* | |
144df9a2 BS |
356 | * Let's follow the Linux kernel and reduce |
357 | * DOS extended partition to 1 or 2 sectors. | |
c4ecaf21 DB |
358 | */ |
359 | size = min(size, (uintmax_t) 2); | |
360 | ||
361 | if (partx_add_partition(fd, n, start, size) == 0) { | |
362 | if (verbose) | |
363 | printf(_("%s: partition #%d added\n"), device, n); | |
364 | continue; | |
365 | } | |
366 | rc = -1; | |
367 | if (verbose) | |
144df9a2 | 368 | warn(_("%s: adding partition #%d failed"), device, n); |
c4ecaf21 DB |
369 | if (!errfirst) |
370 | errlast = errfirst = n; | |
371 | else if (errlast + 1 == n) | |
372 | errlast++; | |
373 | else { | |
374 | add_parts_warnx(device, errfirst, errlast); | |
375 | errlast = errfirst = n; | |
376 | } | |
22853e4a | 377 | } |
c4ecaf21 DB |
378 | |
379 | if (errfirst) | |
380 | add_parts_warnx(device, errfirst, errlast); | |
0e938113 | 381 | |
59d749c3 KZ |
382 | /* |
383 | * The kernel with enabled partitions scanner for loop devices add *all* | |
384 | * partitions, so we should delete any extra, unwanted ones, when the -n | |
385 | * option is passed. | |
386 | */ | |
387 | if (loopdev && loopcxt_is_partscan(&lc) && (lower || upper)) { | |
0e938113 DB |
388 | for (i = 0; i < nparts; i++) { |
389 | blkid_partition par = blkid_partlist_get_partition(ls, i); | |
390 | int n = blkid_partition_get_partno(par); | |
391 | ||
392 | if (n < lower || n > upper) | |
393 | partx_del_partition(fd, n); | |
394 | } | |
395 | } | |
396 | ||
c4ecaf21 DB |
397 | return rc; |
398 | } | |
399 | ||
400 | static int list_parts(blkid_partlist ls, int lower, int upper) | |
401 | { | |
402 | int i, nparts; | |
403 | ||
404 | assert(ls); | |
405 | ||
406 | nparts = blkid_partlist_numof_partitions(ls); | |
407 | ||
408 | for (i = 0; i < nparts; i++) { | |
409 | blkid_partition par = blkid_partlist_get_partition(ls, i); | |
410 | int n = blkid_partition_get_partno(par); | |
411 | uintmax_t start, size; | |
412 | ||
413 | if (lower && n < lower) | |
414 | continue; | |
415 | if (upper && n > upper) | |
416 | continue; | |
417 | ||
418 | start = blkid_partition_get_start(par); | |
419 | size = blkid_partition_get_size(par); | |
420 | ||
144df9a2 | 421 | printf(_("#%2d: %9ju-%9ju (%9ju sectors, %6ju MB)\n"), |
c4ecaf21 DB |
422 | n, start, start + size -1, |
423 | size, (size << 9) / 1000000); | |
22853e4a | 424 | } |
c4ecaf21 DB |
425 | return 0; |
426 | } | |
427 | ||
428 | static void add_tt_line(struct tt *tt, blkid_partition par) | |
429 | { | |
430 | struct tt_line *line; | |
431 | int i; | |
432 | ||
433 | assert(tt); | |
434 | assert(par); | |
22853e4a | 435 | |
c4ecaf21 DB |
436 | line = tt_add_line(tt, NULL); |
437 | if (!line) { | |
438 | warn(_("failed to add line to output")); | |
439 | return; | |
22853e4a | 440 | } |
22853e4a | 441 | |
c4ecaf21 DB |
442 | for (i = 0; i < ncolumns; i++) { |
443 | char *str = NULL; | |
444 | int rc = 0; | |
445 | ||
446 | switch (get_column_id(i)) { | |
447 | case COL_PARTNO: | |
6f312c89 | 448 | rc = xasprintf(&str, "%d", |
c4ecaf21 DB |
449 | blkid_partition_get_partno(par)); |
450 | break; | |
451 | case COL_START: | |
6f312c89 | 452 | rc = xasprintf(&str, "%ju", |
c4ecaf21 DB |
453 | blkid_partition_get_start(par)); |
454 | break; | |
455 | case COL_END: | |
6f312c89 | 456 | rc = xasprintf(&str, "%ju", |
c4ecaf21 DB |
457 | blkid_partition_get_start(par) + |
458 | blkid_partition_get_size(par) - 1); | |
459 | break; | |
460 | case COL_SECTORS: | |
6f312c89 | 461 | rc = xasprintf(&str, "%ju", |
c4ecaf21 DB |
462 | blkid_partition_get_size(par)); |
463 | break; | |
464 | case COL_SIZE: | |
465 | if (partx_flags & FL_BYTES) | |
6f312c89 | 466 | rc = xasprintf(&str, "%ju", (uintmax_t) |
c4ecaf21 | 467 | blkid_partition_get_size(par) << 9); |
5de966b3 | 468 | else |
5d2a9849 | 469 | str = size_to_human_string(SIZE_SUFFIX_1LETTER, |
c4ecaf21 | 470 | blkid_partition_get_size(par) << 9); |
c4ecaf21 DB |
471 | break; |
472 | case COL_NAME: | |
473 | str = (char *) blkid_partition_get_name(par); | |
5de966b3 KZ |
474 | if (str) |
475 | str = xstrdup(str); | |
c4ecaf21 DB |
476 | break; |
477 | case COL_UUID: | |
478 | str = (char *) blkid_partition_get_uuid(par); | |
5de966b3 KZ |
479 | if (str) |
480 | str = xstrdup(str); | |
c4ecaf21 DB |
481 | break; |
482 | case COL_TYPE: | |
5de966b3 KZ |
483 | str = (char *) blkid_partition_get_type_string(par); |
484 | if (str) | |
485 | str = xstrdup(str); | |
486 | else | |
6f312c89 | 487 | rc = xasprintf(&str, "0x%x", |
5de966b3 | 488 | blkid_partition_get_type(par)); |
c4ecaf21 | 489 | break; |
5de966b3 | 490 | case COL_FLAGS: |
6f312c89 | 491 | rc = xasprintf(&str, "0x%llx", blkid_partition_get_flags(par)); |
5de966b3 KZ |
492 | break; |
493 | case COL_SCHEME: | |
494 | { | |
495 | blkid_parttable tab = blkid_partition_get_table(par); | |
496 | if (tab) { | |
497 | str = (char *) blkid_parttable_get_type(tab); | |
498 | if (str) | |
499 | str = xstrdup(str); | |
500 | } | |
501 | break; | |
502 | } | |
c4ecaf21 DB |
503 | default: |
504 | break; | |
505 | } | |
506 | ||
5de966b3 | 507 | if (rc || str) |
c4ecaf21 | 508 | tt_line_set_data(line, i, str); |
22853e4a | 509 | } |
c4ecaf21 | 510 | } |
22853e4a | 511 | |
c4ecaf21 DB |
512 | static int show_parts(blkid_partlist ls, int tt_flags, int lower, int upper) |
513 | { | |
514 | int i, rc = -1; | |
515 | struct tt *tt; | |
516 | int nparts; | |
22853e4a | 517 | |
c4ecaf21 DB |
518 | assert(ls); |
519 | ||
520 | nparts = blkid_partlist_numof_partitions(ls); | |
521 | if (!nparts) | |
522 | return 0; | |
523 | ||
524 | tt = tt_new_table(tt_flags); | |
525 | if (!tt) { | |
526 | warn(_("failed to initialize output table")); | |
527 | return -1; | |
22853e4a | 528 | } |
22853e4a | 529 | |
c4ecaf21 DB |
530 | for (i = 0; i < ncolumns; i++) { |
531 | struct colinfo *col = get_column_info(i); | |
532 | ||
533 | if (!tt_define_column(tt, col->name, col->whint, col->flags)) { | |
534 | warnx(_("failed to initialize output column")); | |
535 | goto done; | |
22853e4a KZ |
536 | } |
537 | } | |
538 | ||
c4ecaf21 DB |
539 | for (i = 0; i < nparts; i++) { |
540 | blkid_partition par = blkid_partlist_get_partition(ls, i); | |
541 | int n = blkid_partition_get_partno(par); | |
22853e4a | 542 | |
c4ecaf21 DB |
543 | if (lower && n < lower) |
544 | continue; | |
545 | if (upper && n > upper) | |
546 | continue; | |
22853e4a | 547 | |
c4ecaf21 | 548 | add_tt_line(tt, par); |
22853e4a | 549 | } |
c4ecaf21 DB |
550 | |
551 | rc = 0; | |
552 | tt_print_table(tt); | |
553 | done: | |
554 | tt_free_table(tt); | |
555 | return rc; | |
22853e4a KZ |
556 | } |
557 | ||
c4ecaf21 DB |
558 | static blkid_partlist get_partlist(blkid_probe pr, |
559 | const char *device, char *type) | |
560 | { | |
561 | blkid_partlist ls; | |
562 | blkid_parttable tab; | |
563 | ||
564 | assert(pr); | |
565 | assert(device); | |
566 | ||
567 | if (type) { | |
568 | char *name[] = { type, NULL }; | |
569 | ||
570 | if (blkid_probe_filter_partitions_type(pr, | |
571 | BLKID_FLTR_ONLYIN, name)) { | |
572 | warnx(_("failed to initialize blkid " | |
144df9a2 | 573 | "filter for '%s'"), type); |
c4ecaf21 DB |
574 | return NULL; |
575 | } | |
576 | } | |
577 | ||
578 | ls = blkid_probe_get_partitions(pr); | |
579 | if (!ls) { | |
580 | warnx(_("%s: failed to read partition table"), device); | |
581 | return NULL; | |
582 | } | |
583 | ||
584 | tab = blkid_partlist_get_table(ls); | |
83ae4c24 | 585 | if (verbose && tab) { |
144df9a2 | 586 | printf(_("%s: partition table type '%s' detected\n"), |
83ae4c24 | 587 | device, blkid_parttable_get_type(tab)); |
c4ecaf21 | 588 | |
83ae4c24 KZ |
589 | if (!blkid_partlist_numof_partitions(ls)) |
590 | printf(_("%s: partition table with no partitions"), device); | |
22853e4a | 591 | } |
83ae4c24 | 592 | |
c4ecaf21 DB |
593 | return ls; |
594 | } | |
595 | ||
abafd686 | 596 | static void __attribute__((__noreturn__)) usage(FILE *out) |
c4ecaf21 | 597 | { |
10ebfeea | 598 | size_t i; |
c4ecaf21 | 599 | |
4ded3823 | 600 | fputs(USAGE_HEADER, out); |
e96fd176 | 601 | fprintf(out, |
b37155e2 | 602 | _(" %s [-a|-d|-s] [--nr <n:m> | <partition>] <disk>\n"), |
c4ecaf21 DB |
603 | program_invocation_short_name); |
604 | ||
8275b732 | 605 | fputs(USAGE_OPTIONS, out); |
e96fd176 | 606 | fputs(_(" -a, --add add specified partitions or all of them\n" |
c4ecaf21 DB |
607 | " -d, --delete delete specified partitions or all of them\n" |
608 | " -l, --list list partitions (DEPRECATED)\n" | |
609 | " -s, --show list partitions\n\n" | |
610 | ||
611 | " -b, --bytes print SIZE in bytes rather than in human readable format\n" | |
612 | " -g, --noheadings don't print headings for --show\n" | |
8275b732 KZ |
613 | " -n, --nr <n:m> specify the range of partitions (e.g. --nr 2:4)\n" |
614 | " -o, --output <type> define which output columns to use\n" | |
8ed48785 KZ |
615 | " -P, --pairs use key=\"value\" output format\n" |
616 | " -r, --raw use raw output format\n" | |
b37155e2 | 617 | " -t, --type <type> specify the partition type (dos, bsd, solaris, etc.)\n" |
8275b732 KZ |
618 | " -v, --verbose verbose mode\n"), out); |
619 | ||
620 | fputs(USAGE_SEPARATOR, out); | |
621 | fputs(USAGE_HELP, out); | |
622 | fputs(USAGE_VERSION, out); | |
c4ecaf21 | 623 | |
e96fd176 | 624 | fputs(_("\nAvailable columns (for --show, --raw or --pairs):\n"), out); |
c4ecaf21 | 625 | |
10ebfeea | 626 | for (i = 0; i < NCOLS; i++) |
d015794e | 627 | fprintf(out, " %10s %s\n", infos[i].name, _(infos[i].help)); |
c4ecaf21 | 628 | |
4ded3823 | 629 | fprintf(out, USAGE_MAN_TAIL("partx(8)")); |
c4ecaf21 DB |
630 | |
631 | exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS); | |
632 | } | |
633 | ||
abafd686 | 634 | static void __attribute__((__noreturn__)) |
c4ecaf21 DB |
635 | errx_mutually_exclusive(const char *opts) |
636 | { | |
144df9a2 | 637 | errx(EXIT_FAILURE, _("the options %s are mutually exclusive"), opts); |
22853e4a KZ |
638 | } |
639 | ||
c4ecaf21 DB |
640 | int main(int argc, char **argv) |
641 | { | |
642 | int fd, c, what = 0, lower = 0, upper = 0, rc = 0; | |
643 | int tt_flags = 0; | |
644 | char *type = NULL; | |
1d6a5daa | 645 | char *device = NULL; /* pointer to argv[], ie: /dev/sda1 */ |
c4ecaf21 DB |
646 | char *wholedisk = NULL; /* allocated, ie: /dev/sda */ |
647 | dev_t disk_devno = 0, part_devno = 0; | |
648 | ||
649 | static const struct option long_opts[] = { | |
650 | { "bytes", no_argument, NULL, 'b' }, | |
651 | { "noheadings", no_argument, NULL, 'g' }, | |
652 | { "raw", no_argument, NULL, 'r' }, | |
653 | { "list", no_argument, NULL, 'l' }, | |
654 | { "show", no_argument, NULL, 's' }, | |
655 | { "add", no_argument, NULL, 'a' }, | |
656 | { "delete", no_argument, NULL, 'd' }, | |
657 | { "type", required_argument, NULL, 't' }, | |
658 | { "nr", required_argument, NULL, 'n' }, | |
659 | { "output", required_argument, NULL, 'o' }, | |
8ed48785 | 660 | { "pairs", no_argument, NULL, 'P' }, |
c4ecaf21 | 661 | { "help", no_argument, NULL, 'h' }, |
8275b732 | 662 | { "verbose", no_argument, NULL, 'v' }, |
c4ecaf21 DB |
663 | { NULL, 0, NULL, 0 } |
664 | }; | |
665 | ||
5c87aa1a BS |
666 | setlocale(LC_ALL, ""); |
667 | bindtextdomain(PACKAGE, LOCALEDIR); | |
668 | textdomain(PACKAGE); | |
669 | ||
8ed48785 KZ |
670 | while ((c = getopt_long(argc, argv, |
671 | "abdglrsvn:t:o:Ph", long_opts, NULL)) != -1) { | |
672 | ||
c4ecaf21 DB |
673 | switch(c) { |
674 | case 'a': | |
8ed48785 KZ |
675 | case 'd': |
676 | case 'l': | |
677 | case 'r': | |
678 | case 'P': | |
679 | case 's': | |
c4ecaf21 | 680 | if (what) |
8ed48785 KZ |
681 | errx_mutually_exclusive("--{add,delete,show,list,raw,pairs}"); |
682 | break; | |
683 | } | |
684 | ||
685 | switch(c) { | |
686 | case 'a': | |
c4ecaf21 DB |
687 | what = ACT_ADD; |
688 | break; | |
689 | case 'b': | |
690 | partx_flags |= FL_BYTES; | |
691 | break; | |
692 | case 'd': | |
c4ecaf21 DB |
693 | what = ACT_DELETE; |
694 | break; | |
695 | case 'g': | |
696 | tt_flags |= TT_FL_NOHEADINGS; | |
697 | break; | |
698 | case 'l': | |
c4ecaf21 DB |
699 | what = ACT_LIST; |
700 | break; | |
701 | case 'n': | |
af7df9ee | 702 | if (parse_range(optarg, &lower, &upper, 0)) |
c4ecaf21 DB |
703 | errx(EXIT_FAILURE, _("failed to parse --nr <M-N> range")); |
704 | break; | |
c4ecaf21 | 705 | case 'o': |
c87638ad | 706 | ncolumns = string_to_idarray(optarg, |
bdc3ed66 KZ |
707 | columns, ARRAY_SIZE(columns), |
708 | column_name_to_id); | |
709 | if (ncolumns < 0) | |
c4ecaf21 DB |
710 | return EXIT_FAILURE; |
711 | break; | |
8ed48785 KZ |
712 | case 'P': |
713 | tt_flags |= TT_FL_EXPORT; | |
714 | what = ACT_SHOW; | |
715 | break; | |
c4ecaf21 DB |
716 | case 'r': |
717 | tt_flags |= TT_FL_RAW; | |
c4ecaf21 DB |
718 | what = ACT_SHOW; |
719 | break; | |
c4ecaf21 | 720 | case 's': |
c4ecaf21 DB |
721 | what = ACT_SHOW; |
722 | break; | |
723 | case 't': | |
724 | type = optarg; | |
725 | break; | |
726 | case 'v': | |
727 | verbose = 1; | |
728 | break; | |
729 | case 'h': | |
730 | usage(stdout); | |
731 | case '?': | |
732 | default: | |
733 | usage(stderr); | |
734 | } | |
735 | } | |
736 | ||
737 | /* -o <list> enables --show mode by default */ | |
738 | if (ncolumns && !what) | |
739 | what = ACT_SHOW; | |
740 | ||
741 | /* backwardly compatible default */ | |
742 | if (!what) | |
743 | what = ACT_LIST; | |
744 | ||
745 | /* --show default, could by modified by -o */ | |
746 | if (what == ACT_SHOW && !ncolumns) { | |
747 | columns[ncolumns++] = COL_PARTNO; | |
748 | columns[ncolumns++] = COL_START; | |
749 | columns[ncolumns++] = COL_END; | |
750 | columns[ncolumns++] = COL_SECTORS; | |
751 | columns[ncolumns++] = COL_SIZE; | |
752 | columns[ncolumns++] = COL_NAME; | |
753 | columns[ncolumns++] = COL_UUID; | |
754 | } | |
755 | ||
756 | /* | |
757 | * Note that 'partx /dev/sda1' == 'partx /dev/sda1 /dev/sda' | |
758 | * so assume that the device and/or disk are always the last | |
759 | * arguments to be passed to partx. | |
760 | */ | |
761 | if (optind == argc - 2) { | |
762 | /* passed 2 arguments: | |
763 | * /dev/sda1 /dev/sda : partition + whole-disk | |
764 | * -- /dev/sda1 : partition that should be used as a whole-disk | |
765 | */ | |
766 | device = argv[optind]; | |
767 | ||
768 | if (strcmp(device, "-") == 0) { | |
769 | device = NULL; | |
770 | wholedisk = xstrdup(argv[optind + 1]); | |
771 | } else { | |
772 | device = argv[optind]; | |
773 | wholedisk = xstrdup(argv[optind + 1]); | |
774 | } | |
775 | } else if (optind == argc - 1) { | |
776 | /* passed only one arg (ie: /dev/sda3 or /dev/sda) */ | |
777 | struct stat sb; | |
778 | ||
779 | device = argv[optind]; | |
780 | ||
781 | if (stat(device, &sb)) | |
782 | err(EXIT_FAILURE, _("%s: stat failed"), device); | |
783 | ||
784 | part_devno = sb.st_rdev; | |
785 | ||
786 | if (blkid_devno_to_wholedisk(part_devno, | |
787 | NULL, 0, &disk_devno) == 0 && | |
788 | part_devno != disk_devno) | |
789 | wholedisk = blkid_devno_to_devname(disk_devno); | |
790 | ||
791 | if (!wholedisk) { | |
792 | wholedisk = xstrdup(device); | |
793 | disk_devno = part_devno; | |
794 | device = NULL; | |
795 | part_devno = 0; | |
22853e4a | 796 | } |
22853e4a | 797 | } else |
c4ecaf21 DB |
798 | usage(stderr); |
799 | ||
800 | if (device && (upper || lower)) | |
e22d8b95 | 801 | errx(EXIT_FAILURE, _("--nr and <partition> are mutually exclusive")); |
c4ecaf21 DB |
802 | |
803 | assert(wholedisk); | |
804 | ||
805 | if (device) { | |
806 | /* use partno from given partition instead of --nr range, e.g: | |
807 | * partx -d /dev/sda3 | |
808 | * is the same like: | |
809 | * partx -d --nr 3 /dev/sda | |
810 | */ | |
811 | struct stat sb; | |
812 | ||
813 | if (!part_devno && !stat(device, &sb)) | |
814 | part_devno = sb.st_rdev; | |
815 | ||
816 | lower = upper = get_partno_from_device(device, part_devno); | |
817 | } | |
818 | ||
819 | if (verbose) | |
144df9a2 | 820 | printf(_("partition: %s, disk: %s, lower: %d, upper: %d\n"), |
2e2b6bb1 | 821 | device ? device : "none", wholedisk, lower, upper); |
c4ecaf21 DB |
822 | |
823 | if (what == ACT_ADD || what == ACT_DELETE) { | |
824 | struct stat x; | |
825 | ||
0e938113 DB |
826 | if (stat(wholedisk, &x)) |
827 | errx(EXIT_FAILURE, "%s", wholedisk); | |
828 | ||
829 | if (S_ISREG(x.st_mode)) { | |
830 | /* not a blkdev, try to associate it to a loop device */ | |
831 | if (what == ACT_DELETE) | |
832 | errx(EXIT_FAILURE, _("%s: cannot delete partitions"), | |
833 | wholedisk); | |
59d749c3 | 834 | if (!loopmod_supports_partscan()) |
0e938113 DB |
835 | errx(EXIT_FAILURE, _("%s: partitioned loop devices unsupported"), |
836 | wholedisk); | |
837 | assoc_loopdev(wholedisk); | |
838 | wholedisk = xstrdup(lc.device); | |
839 | } else if (!S_ISBLK(x.st_mode)) | |
c4ecaf21 DB |
840 | errx(EXIT_FAILURE, _("%s: not a block device"), wholedisk); |
841 | } | |
842 | if ((fd = open(wholedisk, O_RDONLY)) == -1) | |
843 | err(EXIT_FAILURE, _("%s: open failed"), wholedisk); | |
844 | ||
845 | if (what == ACT_DELETE) | |
846 | rc = del_parts(fd, wholedisk, disk_devno, lower, upper); | |
847 | else { | |
848 | blkid_probe pr = blkid_new_probe(); | |
849 | blkid_partlist ls = NULL; | |
850 | ||
851 | if (!pr || blkid_probe_set_device(pr, fd, 0, 0)) | |
852 | warnx(_("%s: failed to initialize blkid prober"), | |
853 | wholedisk); | |
854 | else | |
855 | ls = get_partlist(pr, wholedisk, type); | |
856 | ||
857 | if (ls) { | |
858 | int n = blkid_partlist_numof_partitions(ls); | |
859 | ||
860 | if (lower < 0) | |
861 | lower = n + lower + 1; | |
862 | if (upper < 0) | |
863 | upper = n + upper + 1; | |
864 | if (lower > upper) { | |
144df9a2 | 865 | warnx(_("specified range <%d:%d> " |
c4ecaf21 DB |
866 | "does not make sense"), lower, upper); |
867 | rc = -1, what = 0; | |
868 | } | |
869 | ||
870 | switch (what) { | |
871 | case ACT_SHOW: | |
872 | rc = show_parts(ls, tt_flags, lower, upper); | |
873 | break; | |
874 | case ACT_LIST: | |
875 | rc = list_parts(ls, lower, upper); | |
876 | break; | |
877 | case ACT_ADD: | |
878 | rc = add_parts(fd, wholedisk, ls, lower, upper); | |
879 | break; | |
880 | } | |
881 | } | |
882 | blkid_free_probe(pr); | |
883 | } | |
884 | ||
0e938113 DB |
885 | if (loopdev) |
886 | loopcxt_deinit(&lc); | |
887 | ||
c4ecaf21 DB |
888 | close(fd); |
889 | return rc ? EXIT_FAILURE : EXIT_SUCCESS; | |
22853e4a | 890 | } |
c4ecaf21 | 891 |