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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> | |
016aa0ac | 24 | #include <libsmartcols.h> |
0d518f34 | 25 | |
1aff9b62 | 26 | #include "c.h" |
c4ecaf21 DB |
27 | #include "pathnames.h" |
28 | #include "nls.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" |
757bbfad | 36 | #include "closestream.h" |
6320c5aa | 37 | #include "optutils.h" |
22853e4a | 38 | |
c4ecaf21 DB |
39 | /* this is the default upper limit, could be modified by --nr */ |
40 | #define SLICES_MAX 256 | |
41 | ||
016aa0ac OO |
42 | /* basic table settings */ |
43 | enum { | |
44 | PARTX_RAW = (1 << 0), | |
45 | PARTX_NOHEADINGS = (1 << 1), | |
46 | PARTX_EXPORT = (1 << 2), | |
47 | }; | |
48 | ||
c4ecaf21 DB |
49 | /* all the columns (-o option) */ |
50 | enum { | |
51 | COL_PARTNO, | |
52 | COL_START, | |
53 | COL_END, | |
54 | COL_SECTORS, | |
55 | COL_SIZE, | |
56 | COL_NAME, | |
57 | COL_UUID, | |
58 | COL_TYPE, | |
5de966b3 KZ |
59 | COL_FLAGS, |
60 | COL_SCHEME, | |
c4ecaf21 | 61 | }; |
22853e4a | 62 | |
6320c5aa | 63 | #define ACT_ERROR "--{add,delete,show,list,raw,pairs}" |
c4ecaf21 | 64 | enum { |
6320c5aa SK |
65 | ACT_NONE, |
66 | ACT_LIST, | |
c4ecaf21 DB |
67 | ACT_SHOW, |
68 | ACT_ADD, | |
3b905b79 | 69 | ACT_UPD, |
c4ecaf21 DB |
70 | ACT_DELETE |
71 | }; | |
72 | ||
73 | enum { | |
74 | FL_BYTES = (1 << 1) | |
75 | }; | |
76 | ||
77 | /* column names */ | |
78 | struct colinfo { | |
79 | const char *name; /* header */ | |
80 | double whint; /* width hint (N < 1 is in percent of termwidth) */ | |
016aa0ac | 81 | int flags; /* SCOLS_FL_* */ |
c4ecaf21 DB |
82 | const char *help; |
83 | }; | |
22853e4a | 84 | |
c4ecaf21 | 85 | /* columns descriptions */ |
10ebfeea | 86 | struct colinfo infos[] = { |
016aa0ac OO |
87 | [COL_PARTNO] = { "NR", 0.25, SCOLS_FL_RIGHT, N_("partition number") }, |
88 | [COL_START] = { "START", 0.30, SCOLS_FL_RIGHT, N_("start of the partition in sectors") }, | |
89 | [COL_END] = { "END", 0.30, SCOLS_FL_RIGHT, N_("end of the partition in sectors") }, | |
90 | [COL_SECTORS] = { "SECTORS", 0.30, SCOLS_FL_RIGHT, N_("number of sectors") }, | |
91 | [COL_SIZE] = { "SIZE", 0.30, SCOLS_FL_RIGHT, N_("human readable size") }, | |
92 | [COL_NAME] = { "NAME", 0.30, SCOLS_FL_TRUNC, N_("partition name") }, | |
c4ecaf21 | 93 | [COL_UUID] = { "UUID", 36, 0, N_("partition UUID")}, |
016aa0ac OO |
94 | [COL_SCHEME] = { "SCHEME", 0.1, SCOLS_FL_TRUNC, N_("partition table type (dos, gpt, ...)")}, |
95 | [COL_FLAGS] = { "FLAGS", 0.1, SCOLS_FL_TRUNC, N_("partition flags")}, | |
96 | [COL_TYPE] = { "TYPE", 1, SCOLS_FL_RIGHT, N_("partition type (a string, a UUID, or hex)")}, | |
c4ecaf21 | 97 | }; |
10ebfeea DB |
98 | |
99 | #define NCOLS ARRAY_SIZE(infos) | |
100 | ||
c4ecaf21 | 101 | /* array with IDs of enabled columns */ |
10ebfeea | 102 | static int columns[NCOLS], ncolumns; |
c4ecaf21 DB |
103 | |
104 | static int verbose; | |
105 | static int partx_flags; | |
0e938113 DB |
106 | static struct loopdev_cxt lc; |
107 | static int loopdev; | |
22853e4a | 108 | |
0e938113 DB |
109 | static void assoc_loopdev(const char *fname) |
110 | { | |
111 | int rc; | |
112 | ||
defa0710 KZ |
113 | if (loopcxt_init(&lc, 0)) |
114 | err(EXIT_FAILURE, _("failed to initialize loopcxt")); | |
0e938113 DB |
115 | |
116 | rc = loopcxt_find_unused(&lc); | |
117 | if (rc) | |
118 | err(EXIT_FAILURE, _("%s: failed to find unused loop device"), | |
119 | fname); | |
120 | ||
121 | if (verbose) | |
122 | printf(_("Trying to use '%s' for the loop device\n"), | |
123 | loopcxt_get_device(&lc)); | |
124 | ||
125 | if (loopcxt_set_backing_file(&lc, fname)) | |
126 | err(EXIT_FAILURE, _("%s: failed to set backing file"), fname); | |
127 | ||
128 | rc = loopcxt_setup_device(&lc); | |
129 | ||
130 | if (rc == -EBUSY) | |
dbfff473 | 131 | err(EXIT_FAILURE, _("%s: failed to set up loop device"), fname); |
0e938113 DB |
132 | |
133 | loopdev = 1; | |
134 | } | |
22853e4a | 135 | |
c4ecaf21 | 136 | static inline int get_column_id(int num) |
1d4ad1de | 137 | { |
10ebfeea | 138 | assert(ARRAY_SIZE(columns) == NCOLS); |
c4ecaf21 | 139 | assert(num < ncolumns); |
10ebfeea | 140 | assert(columns[num] < (int) NCOLS); |
c4ecaf21 | 141 | return columns[num]; |
22853e4a KZ |
142 | } |
143 | ||
c4ecaf21 | 144 | static inline struct colinfo *get_column_info(int num) |
1d4ad1de | 145 | { |
c4ecaf21 | 146 | return &infos[ get_column_id(num) ]; |
22853e4a KZ |
147 | } |
148 | ||
c4ecaf21 DB |
149 | static int column_name_to_id(const char *name, size_t namesz) |
150 | { | |
10ebfeea | 151 | size_t i; |
22853e4a | 152 | |
c4ecaf21 | 153 | assert(name); |
22853e4a | 154 | |
10ebfeea | 155 | for (i = 0; i < NCOLS; i++) { |
c4ecaf21 | 156 | const char *cn = infos[i].name; |
22853e4a | 157 | |
c4ecaf21 DB |
158 | if (!strncasecmp(name, cn, namesz) && !*(cn + namesz)) |
159 | return i; | |
22853e4a | 160 | } |
c4ecaf21 DB |
161 | warnx(_("unknown column: %s"), name); |
162 | return -1; | |
163 | } | |
22853e4a | 164 | |
c4ecaf21 DB |
165 | /* |
166 | * Given a partition return the corresponding partition number. | |
167 | * | |
168 | * Note that this function tries to use sysfs, otherwise it assumes that the | |
169 | * last characters are always numeric (sda1, sdc20, etc). | |
c4ecaf21 DB |
170 | */ |
171 | static int get_partno_from_device(char *partition, dev_t devno) | |
172 | { | |
173 | int partno = 0; | |
174 | size_t sz; | |
175 | char *p, *end = NULL; | |
176 | ||
177 | assert(partition); | |
178 | ||
179 | if (devno) { | |
a88268b8 | 180 | struct sysfs_cxt cxt; |
43e3f054 | 181 | int rc; |
a88268b8 | 182 | |
5bfbbc78 KZ |
183 | if (sysfs_init(&cxt, devno, NULL)) |
184 | goto err; | |
185 | ||
43e3f054 KZ |
186 | rc = sysfs_read_int(&cxt, "partition", &partno); |
187 | sysfs_deinit(&cxt); | |
188 | ||
189 | if (rc == 0) | |
c4ecaf21 DB |
190 | return partno; |
191 | } | |
22853e4a | 192 | |
c4ecaf21 DB |
193 | sz = strlen(partition); |
194 | p = partition + sz - 1; | |
22853e4a | 195 | |
c4ecaf21 DB |
196 | if (!isdigit((unsigned int) *p)) |
197 | goto err; | |
22853e4a | 198 | |
c4ecaf21 DB |
199 | while (isdigit((unsigned int) *(p - 1))) p--; |
200 | ||
201 | errno = 0; | |
202 | partno = strtol(p, &end, 10); | |
203 | if (errno || !end || *end || p == end) | |
204 | goto err; | |
205 | ||
206 | return partno; | |
207 | err: | |
208 | errx(EXIT_FAILURE, _("%s: failed to get partition number"), partition); | |
209 | } | |
210 | ||
211 | static int get_max_partno(const char *disk, dev_t devno) | |
212 | { | |
741a5b10 | 213 | char path[PATH_MAX], *parent, *dirname = NULL; |
c4ecaf21 DB |
214 | struct stat st; |
215 | DIR *dir; | |
216 | struct dirent *d; | |
217 | int partno = 0; | |
218 | ||
219 | if (!devno && !stat(disk, &st)) | |
220 | devno = st.st_rdev; | |
221 | if (!devno) | |
222 | goto dflt; | |
223 | parent = strrchr(disk, '/'); | |
224 | if (!parent) | |
225 | goto dflt; | |
226 | parent++; | |
227 | ||
228 | snprintf(path, sizeof(path), _PATH_SYS_DEVBLOCK "/%d:%d/", | |
229 | major(devno), minor(devno)); | |
230 | ||
231 | dir = opendir(path); | |
232 | if (!dir) | |
233 | goto dflt; | |
234 | ||
741a5b10 KZ |
235 | dirname = xstrdup(path); |
236 | ||
237 | while ((d = readdir(dir))) { | |
c4ecaf21 DB |
238 | int fd; |
239 | ||
240 | if (!strcmp(d->d_name, ".") || | |
241 | !strcmp(d->d_name, "..")) | |
242 | continue; | |
243 | #ifdef _DIRENT_HAVE_D_TYPE | |
a7c60528 | 244 | if (d->d_type != DT_DIR && d->d_type != DT_UNKNOWN) |
c4ecaf21 DB |
245 | continue; |
246 | #endif | |
247 | if (strncmp(parent, d->d_name, strlen(parent))) | |
248 | continue; | |
249 | snprintf(path, sizeof(path), "%s/partition", d->d_name); | |
250 | ||
741a5b10 | 251 | fd = open_at(dirfd(dir), dirname, path, O_RDONLY); |
c4ecaf21 DB |
252 | if (fd) { |
253 | int x = 0; | |
254 | FILE *f = fdopen(fd, "r"); | |
255 | if (f) { | |
256 | if (fscanf(f, "%d", &x) == 1 && x > partno) | |
257 | partno = x; | |
258 | fclose(f); | |
22853e4a | 259 | } |
22853e4a | 260 | } |
22853e4a KZ |
261 | } |
262 | ||
741a5b10 | 263 | free(dirname); |
c4ecaf21 DB |
264 | closedir(dir); |
265 | return partno; | |
266 | dflt: | |
267 | return SLICES_MAX; | |
268 | } | |
269 | ||
270 | static void del_parts_warnx(const char *device, int first, int last) | |
271 | { | |
272 | if (first == last) | |
273 | warnx(_("%s: error deleting partition %d"), device, first); | |
274 | else | |
275 | warnx(_("%s: error deleting partitions %d-%d"), | |
276 | device, first, last); | |
277 | } | |
278 | ||
279 | static int del_parts(int fd, const char *device, dev_t devno, | |
280 | int lower, int upper) | |
281 | { | |
282 | int rc = 0, i, errfirst = 0, errlast = 0; | |
283 | ||
284 | assert(fd >= 0); | |
285 | assert(device); | |
286 | ||
287 | if (!lower) | |
288 | lower = 1; | |
289 | if (!upper || lower < 0 || upper < 0) { | |
290 | int n = get_max_partno(device, devno); | |
291 | if (!upper) | |
292 | upper = n; | |
293 | else if (upper < 0) | |
294 | upper = n + upper + 1; | |
295 | if (lower < 0) | |
296 | lower = n + lower + 1; | |
297 | } | |
298 | if (lower > upper) { | |
144df9a2 | 299 | warnx(_("specified range <%d:%d> " |
c4ecaf21 DB |
300 | "does not make sense"), lower, upper); |
301 | return -1; | |
302 | } | |
303 | ||
304 | for (i = lower; i <= upper; i++) { | |
ab025087 PS |
305 | rc = partx_del_partition(fd, i); |
306 | if (rc == 0) { | |
c4ecaf21 DB |
307 | if (verbose) |
308 | printf(_("%s: partition #%d removed\n"), device, i); | |
309 | continue; | |
ab025087 PS |
310 | } else if (errno == ENXIO) { |
311 | if (verbose) | |
312 | printf(_("%s: partition #%d already doesn't exist\n"), device, i); | |
313 | continue; | |
c4ecaf21 DB |
314 | } |
315 | rc = -1; | |
316 | if (verbose) | |
144df9a2 | 317 | warn(_("%s: deleting partition #%d failed"), device, i); |
c4ecaf21 DB |
318 | if (!errfirst) |
319 | errlast = errfirst = i; | |
320 | else if (errlast + 1 == i) | |
321 | errlast++; | |
322 | else { | |
323 | del_parts_warnx(device, errfirst, errlast); | |
324 | errlast = errfirst = i; | |
22853e4a | 325 | } |
22853e4a KZ |
326 | } |
327 | ||
c4ecaf21 DB |
328 | if (errfirst) |
329 | del_parts_warnx(device, errfirst, errlast); | |
330 | return rc; | |
331 | } | |
332 | ||
0e938113 | 333 | |
c4ecaf21 DB |
334 | static void add_parts_warnx(const char *device, int first, int last) |
335 | { | |
336 | if (first == last) | |
337 | warnx(_("%s: error adding partition %d"), device, first); | |
338 | else | |
339 | warnx(_("%s: error adding partitions %d-%d"), | |
340 | device, first, last); | |
341 | } | |
342 | ||
343 | static int add_parts(int fd, const char *device, | |
0e938113 | 344 | blkid_partlist ls, int lower, int upper) |
c4ecaf21 DB |
345 | { |
346 | int i, nparts, rc = 0, errfirst = 0, errlast = 0; | |
347 | ||
348 | assert(fd >= 0); | |
349 | assert(device); | |
350 | assert(ls); | |
351 | ||
352 | nparts = blkid_partlist_numof_partitions(ls); | |
353 | ||
354 | for (i = 0; i < nparts; i++) { | |
355 | blkid_partition par = blkid_partlist_get_partition(ls, i); | |
356 | int n = blkid_partition_get_partno(par); | |
357 | uintmax_t start, size; | |
358 | ||
359 | if (lower && n < lower) | |
360 | continue; | |
361 | if (upper && n > upper) | |
362 | continue; | |
363 | ||
364 | start = blkid_partition_get_start(par); | |
365 | size = blkid_partition_get_size(par); | |
366 | ||
367 | if (blkid_partition_is_extended(par)) | |
368 | /* | |
144df9a2 BS |
369 | * Let's follow the Linux kernel and reduce |
370 | * DOS extended partition to 1 or 2 sectors. | |
c4ecaf21 DB |
371 | */ |
372 | size = min(size, (uintmax_t) 2); | |
373 | ||
374 | if (partx_add_partition(fd, n, start, size) == 0) { | |
375 | if (verbose) | |
376 | printf(_("%s: partition #%d added\n"), device, n); | |
377 | continue; | |
378 | } | |
379 | rc = -1; | |
380 | if (verbose) | |
144df9a2 | 381 | warn(_("%s: adding partition #%d failed"), device, n); |
c4ecaf21 DB |
382 | if (!errfirst) |
383 | errlast = errfirst = n; | |
384 | else if (errlast + 1 == n) | |
385 | errlast++; | |
386 | else { | |
387 | add_parts_warnx(device, errfirst, errlast); | |
388 | errlast = errfirst = n; | |
389 | } | |
22853e4a | 390 | } |
c4ecaf21 DB |
391 | |
392 | if (errfirst) | |
393 | add_parts_warnx(device, errfirst, errlast); | |
0e938113 | 394 | |
59d749c3 KZ |
395 | /* |
396 | * The kernel with enabled partitions scanner for loop devices add *all* | |
397 | * partitions, so we should delete any extra, unwanted ones, when the -n | |
398 | * option is passed. | |
399 | */ | |
400 | if (loopdev && loopcxt_is_partscan(&lc) && (lower || upper)) { | |
0e938113 DB |
401 | for (i = 0; i < nparts; i++) { |
402 | blkid_partition par = blkid_partlist_get_partition(ls, i); | |
403 | int n = blkid_partition_get_partno(par); | |
404 | ||
405 | if (n < lower || n > upper) | |
406 | partx_del_partition(fd, n); | |
407 | } | |
408 | } | |
409 | ||
c4ecaf21 DB |
410 | return rc; |
411 | } | |
412 | ||
3b905b79 PS |
413 | static void upd_parts_warnx(const char *device, int first, int last) |
414 | { | |
415 | if (first == last) | |
416 | warnx(_("%s: error updating partition %d"), device, first); | |
417 | else | |
418 | warnx(_("%s: error updating partitions %d-%d"), | |
419 | device, first, last); | |
420 | } | |
421 | ||
422 | static int upd_parts(int fd, const char *device, dev_t devno, | |
423 | blkid_partlist ls, int lower, int upper) | |
424 | { | |
84ac3112 | 425 | int n, nparts, rc = 0, errfirst = 0, errlast = 0, err; |
3b905b79 PS |
426 | blkid_partition par; |
427 | uintmax_t start, size; | |
428 | ||
429 | assert(fd >= 0); | |
430 | assert(device); | |
431 | assert(ls); | |
432 | ||
433 | nparts = blkid_partlist_numof_partitions(ls); | |
434 | if (!lower) | |
435 | lower = 1; | |
436 | if (!upper || lower < 0 || upper < 0) { | |
437 | n = get_max_partno(device, devno); | |
438 | if (!upper) | |
439 | upper = n > nparts ? n : nparts; | |
440 | else if (upper < 0) | |
441 | upper = n + upper + 1; | |
442 | if (lower < 0) | |
443 | lower = n + lower + 1; | |
444 | } | |
445 | if (lower > upper) { | |
446 | warnx(_("specified range <%d:%d> " | |
447 | "does not make sense"), lower, upper); | |
448 | return -1; | |
449 | } | |
450 | ||
84ac3112 | 451 | for (n = lower; n <= upper; n++) { |
c62f164c | 452 | par = blkid_partlist_get_partition_by_partno(ls, n); |
84ac3112 SM |
453 | if (!par) { |
454 | if (verbose) | |
455 | warn(_("%s: no partition #%d"), device, n); | |
3b905b79 | 456 | continue; |
84ac3112 | 457 | } |
3b905b79 PS |
458 | |
459 | start = blkid_partition_get_start(par); | |
460 | size = blkid_partition_get_size(par); | |
3b905b79 PS |
461 | if (blkid_partition_is_extended(par)) |
462 | /* | |
463 | * Let's follow the Linux kernel and reduce | |
464 | * DOS extended partition to 1 or 2 sectors. | |
465 | */ | |
466 | size = min(size, (uintmax_t) 2); | |
467 | ||
468 | err = partx_del_partition(fd, n); | |
469 | if (err == -1 && errno == ENXIO) | |
470 | err = 0; /* good, it already doesn't exist */ | |
84ac3112 | 471 | if (err == -1 && errno == EBUSY) |
3b905b79 | 472 | { |
84ac3112 SM |
473 | /* try to resize */ |
474 | err = partx_resize_partition(fd, n, start, size); | |
475 | if (verbose) | |
476 | printf(_("%s: partition #%d resized\n"), device, n); | |
477 | if (err == 0) | |
3b905b79 | 478 | continue; |
3b905b79 | 479 | } |
84ac3112 SM |
480 | if (err == 0 && partx_add_partition(fd, n, start, size) == 0) { |
481 | if (verbose) | |
482 | printf(_("%s: partition #%d added\n"), device, n); | |
483 | continue; | |
484 | } | |
485 | ||
3b905b79 PS |
486 | if (err == 0) |
487 | continue; | |
488 | rc = -1; | |
489 | if (verbose) | |
490 | warn(_("%s: updating partition #%d failed"), device, n); | |
491 | if (!errfirst) | |
492 | errlast = errfirst = n; | |
493 | else if (errlast + 1 == n) | |
494 | errlast++; | |
495 | else { | |
496 | upd_parts_warnx(device, errfirst, errlast); | |
497 | errlast = errfirst = n; | |
498 | } | |
499 | } | |
500 | ||
501 | if (errfirst) | |
502 | upd_parts_warnx(device, errfirst, errlast); | |
503 | return rc; | |
504 | } | |
505 | ||
c4ecaf21 DB |
506 | static int list_parts(blkid_partlist ls, int lower, int upper) |
507 | { | |
508 | int i, nparts; | |
509 | ||
510 | assert(ls); | |
511 | ||
512 | nparts = blkid_partlist_numof_partitions(ls); | |
513 | ||
514 | for (i = 0; i < nparts; i++) { | |
515 | blkid_partition par = blkid_partlist_get_partition(ls, i); | |
516 | int n = blkid_partition_get_partno(par); | |
517 | uintmax_t start, size; | |
518 | ||
519 | if (lower && n < lower) | |
520 | continue; | |
521 | if (upper && n > upper) | |
522 | continue; | |
523 | ||
524 | start = blkid_partition_get_start(par); | |
525 | size = blkid_partition_get_size(par); | |
526 | ||
0df61bea BS |
527 | printf(P_("#%2d: %9ju-%9ju (%9ju sector, %6ju MB)\n", |
528 | "#%2d: %9ju-%9ju (%9ju sectors, %6ju MB)\n", | |
529 | size), | |
c4ecaf21 DB |
530 | n, start, start + size -1, |
531 | size, (size << 9) / 1000000); | |
22853e4a | 532 | } |
c4ecaf21 DB |
533 | return 0; |
534 | } | |
535 | ||
3b80b370 | 536 | static int add_scols_line(struct libscols_table *table, blkid_partition par) |
c4ecaf21 | 537 | { |
016aa0ac | 538 | struct libscols_line *line; |
3b80b370 | 539 | int i, rc = 0; |
c4ecaf21 | 540 | |
016aa0ac | 541 | assert(table); |
c4ecaf21 | 542 | assert(par); |
22853e4a | 543 | |
016aa0ac | 544 | line = scols_table_new_line(table, NULL); |
c4ecaf21 DB |
545 | if (!line) { |
546 | warn(_("failed to add line to output")); | |
3b80b370 | 547 | return -ENOMEM; |
22853e4a | 548 | } |
22853e4a | 549 | |
c4ecaf21 | 550 | for (i = 0; i < ncolumns; i++) { |
3b80b370 KZ |
551 | char *str = NULL; /* allocated string */ |
552 | const char *cstr = NULL; /* foreign string */ | |
c4ecaf21 DB |
553 | |
554 | switch (get_column_id(i)) { | |
555 | case COL_PARTNO: | |
8acf2fb6 | 556 | xasprintf(&str, "%d", blkid_partition_get_partno(par)); |
c4ecaf21 DB |
557 | break; |
558 | case COL_START: | |
8acf2fb6 | 559 | xasprintf(&str, "%ju", blkid_partition_get_start(par)); |
c4ecaf21 DB |
560 | break; |
561 | case COL_END: | |
8acf2fb6 | 562 | xasprintf(&str, "%ju", |
c4ecaf21 DB |
563 | blkid_partition_get_start(par) + |
564 | blkid_partition_get_size(par) - 1); | |
565 | break; | |
566 | case COL_SECTORS: | |
8acf2fb6 | 567 | xasprintf(&str, "%ju", blkid_partition_get_size(par)); |
c4ecaf21 DB |
568 | break; |
569 | case COL_SIZE: | |
570 | if (partx_flags & FL_BYTES) | |
8acf2fb6 | 571 | xasprintf(&str, "%ju", (uintmax_t) |
c4ecaf21 | 572 | blkid_partition_get_size(par) << 9); |
5de966b3 | 573 | else |
5d2a9849 | 574 | str = size_to_human_string(SIZE_SUFFIX_1LETTER, |
c4ecaf21 | 575 | blkid_partition_get_size(par) << 9); |
c4ecaf21 DB |
576 | break; |
577 | case COL_NAME: | |
3b80b370 | 578 | cstr = blkid_partition_get_name(par); |
c4ecaf21 DB |
579 | break; |
580 | case COL_UUID: | |
3b80b370 | 581 | cstr = blkid_partition_get_uuid(par); |
c4ecaf21 DB |
582 | break; |
583 | case COL_TYPE: | |
6df8dcfb | 584 | if (blkid_partition_get_type_string(par)) |
3b80b370 | 585 | cstr = blkid_partition_get_type_string(par); |
5de966b3 | 586 | else |
8acf2fb6 | 587 | xasprintf(&str, "0x%x", |
5de966b3 | 588 | blkid_partition_get_type(par)); |
c4ecaf21 | 589 | break; |
5de966b3 | 590 | case COL_FLAGS: |
8acf2fb6 | 591 | xasprintf(&str, "0x%llx", blkid_partition_get_flags(par)); |
5de966b3 KZ |
592 | break; |
593 | case COL_SCHEME: | |
594 | { | |
595 | blkid_parttable tab = blkid_partition_get_table(par); | |
6df8dcfb | 596 | if (tab) |
3b80b370 | 597 | cstr = blkid_parttable_get_type(tab); |
5de966b3 KZ |
598 | break; |
599 | } | |
c4ecaf21 DB |
600 | default: |
601 | break; | |
602 | } | |
603 | ||
3b80b370 KZ |
604 | if (cstr) |
605 | rc = scols_line_set_data(line, i, cstr); | |
606 | else if (str) | |
607 | rc = scols_line_refer_data(line, i, str); | |
608 | if (rc) { | |
609 | warn(_("failed to add data to output table")); | |
610 | break; | |
611 | } | |
22853e4a | 612 | } |
3b80b370 KZ |
613 | |
614 | return rc; | |
c4ecaf21 | 615 | } |
22853e4a | 616 | |
016aa0ac | 617 | static int show_parts(blkid_partlist ls, int scols_flags, int lower, int upper) |
c4ecaf21 DB |
618 | { |
619 | int i, rc = -1; | |
016aa0ac | 620 | struct libscols_table *table; |
c4ecaf21 | 621 | int nparts; |
22853e4a | 622 | |
c4ecaf21 DB |
623 | assert(ls); |
624 | ||
625 | nparts = blkid_partlist_numof_partitions(ls); | |
626 | if (!nparts) | |
627 | return 0; | |
628 | ||
710ed55d | 629 | scols_init_debug(0); |
0925a9dd | 630 | table = scols_new_table(); |
016aa0ac | 631 | if (!table) { |
c4ecaf21 DB |
632 | warn(_("failed to initialize output table")); |
633 | return -1; | |
22853e4a | 634 | } |
0925a9dd KZ |
635 | scols_table_enable_raw(table, !!(scols_flags & PARTX_RAW)); |
636 | scols_table_enable_export(table, !!(scols_flags & PARTX_EXPORT)); | |
637 | scols_table_enable_noheadings(table, !!(scols_flags & PARTX_NOHEADINGS)); | |
22853e4a | 638 | |
c4ecaf21 DB |
639 | for (i = 0; i < ncolumns; i++) { |
640 | struct colinfo *col = get_column_info(i); | |
641 | ||
016aa0ac | 642 | if (!scols_table_new_column(table, col->name, col->whint, col->flags)) { |
c4ecaf21 DB |
643 | warnx(_("failed to initialize output column")); |
644 | goto done; | |
22853e4a KZ |
645 | } |
646 | } | |
647 | ||
c4ecaf21 DB |
648 | for (i = 0; i < nparts; i++) { |
649 | blkid_partition par = blkid_partlist_get_partition(ls, i); | |
650 | int n = blkid_partition_get_partno(par); | |
22853e4a | 651 | |
c4ecaf21 DB |
652 | if (lower && n < lower) |
653 | continue; | |
654 | if (upper && n > upper) | |
655 | continue; | |
22853e4a | 656 | |
3b80b370 KZ |
657 | rc = add_scols_line(table, par); |
658 | if (rc) | |
659 | break; | |
22853e4a | 660 | } |
c4ecaf21 DB |
661 | |
662 | rc = 0; | |
016aa0ac | 663 | scols_print_table(table); |
c4ecaf21 | 664 | done: |
016aa0ac | 665 | scols_unref_table(table); |
c4ecaf21 | 666 | return rc; |
22853e4a KZ |
667 | } |
668 | ||
c4ecaf21 DB |
669 | static blkid_partlist get_partlist(blkid_probe pr, |
670 | const char *device, char *type) | |
671 | { | |
672 | blkid_partlist ls; | |
673 | blkid_parttable tab; | |
674 | ||
675 | assert(pr); | |
676 | assert(device); | |
677 | ||
678 | if (type) { | |
679 | char *name[] = { type, NULL }; | |
680 | ||
681 | if (blkid_probe_filter_partitions_type(pr, | |
682 | BLKID_FLTR_ONLYIN, name)) { | |
683 | warnx(_("failed to initialize blkid " | |
144df9a2 | 684 | "filter for '%s'"), type); |
c4ecaf21 DB |
685 | return NULL; |
686 | } | |
687 | } | |
688 | ||
689 | ls = blkid_probe_get_partitions(pr); | |
690 | if (!ls) { | |
691 | warnx(_("%s: failed to read partition table"), device); | |
692 | return NULL; | |
693 | } | |
694 | ||
695 | tab = blkid_partlist_get_table(ls); | |
83ae4c24 | 696 | if (verbose && tab) { |
144df9a2 | 697 | printf(_("%s: partition table type '%s' detected\n"), |
83ae4c24 | 698 | device, blkid_parttable_get_type(tab)); |
c4ecaf21 | 699 | |
83ae4c24 KZ |
700 | if (!blkid_partlist_numof_partitions(ls)) |
701 | printf(_("%s: partition table with no partitions"), device); | |
22853e4a | 702 | } |
83ae4c24 | 703 | |
c4ecaf21 DB |
704 | return ls; |
705 | } | |
706 | ||
abafd686 | 707 | static void __attribute__((__noreturn__)) usage(FILE *out) |
c4ecaf21 | 708 | { |
10ebfeea | 709 | size_t i; |
c4ecaf21 | 710 | |
4ded3823 | 711 | fputs(USAGE_HEADER, out); |
e96fd176 | 712 | fprintf(out, |
3b905b79 | 713 | _(" %s [-a|-d|-s|-u] [--nr <n:m> | <partition>] <disk>\n"), |
c4ecaf21 DB |
714 | program_invocation_short_name); |
715 | ||
8275b732 | 716 | fputs(USAGE_OPTIONS, out); |
b7e785ed SK |
717 | fputs(_(" -a, --add add specified partitions or all of them\n"), out); |
718 | fputs(_(" -d, --delete delete specified partitions or all of them\n"), out); | |
b7e785ed | 719 | fputs(_(" -u, --update update specified partitions or all of them\n"), out); |
dbfff473 | 720 | fputs(_(" -s, --show list partitions\n\n"), out); |
b7e785ed SK |
721 | fputs(_(" -b, --bytes print SIZE in bytes rather than in human readable format\n"), out); |
722 | fputs(_(" -g, --noheadings don't print headings for --show\n"), out); | |
723 | fputs(_(" -n, --nr <n:m> specify the range of partitions (e.g. --nr 2:4)\n"), out); | |
dbfff473 | 724 | fputs(_(" -o, --output <list> define which output columns to use\n"), out); |
b7e785ed SK |
725 | fputs(_(" -P, --pairs use key=\"value\" output format\n"), out); |
726 | fputs(_(" -r, --raw use raw output format\n"), out); | |
727 | fputs(_(" -t, --type <type> specify the partition type (dos, bsd, solaris, etc.)\n"), out); | |
728 | fputs(_(" -v, --verbose verbose mode\n"), out); | |
8275b732 KZ |
729 | |
730 | fputs(USAGE_SEPARATOR, out); | |
731 | fputs(USAGE_HELP, out); | |
732 | fputs(USAGE_VERSION, out); | |
c4ecaf21 | 733 | |
e96fd176 | 734 | fputs(_("\nAvailable columns (for --show, --raw or --pairs):\n"), out); |
c4ecaf21 | 735 | |
10ebfeea | 736 | for (i = 0; i < NCOLS; i++) |
d015794e | 737 | fprintf(out, " %10s %s\n", infos[i].name, _(infos[i].help)); |
c4ecaf21 | 738 | |
4ded3823 | 739 | fprintf(out, USAGE_MAN_TAIL("partx(8)")); |
c4ecaf21 DB |
740 | |
741 | exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS); | |
742 | } | |
743 | ||
c4ecaf21 DB |
744 | int main(int argc, char **argv) |
745 | { | |
6320c5aa | 746 | int fd, c, what = ACT_NONE, lower = 0, upper = 0, rc = 0; |
016aa0ac | 747 | int scols_flags = 0; |
c4ecaf21 | 748 | char *type = NULL; |
1d6a5daa | 749 | char *device = NULL; /* pointer to argv[], ie: /dev/sda1 */ |
c4ecaf21 | 750 | char *wholedisk = NULL; /* allocated, ie: /dev/sda */ |
4e395c55 | 751 | char *outarg = NULL; |
c4ecaf21 DB |
752 | dev_t disk_devno = 0, part_devno = 0; |
753 | ||
754 | static const struct option long_opts[] = { | |
755 | { "bytes", no_argument, NULL, 'b' }, | |
756 | { "noheadings", no_argument, NULL, 'g' }, | |
757 | { "raw", no_argument, NULL, 'r' }, | |
758 | { "list", no_argument, NULL, 'l' }, | |
759 | { "show", no_argument, NULL, 's' }, | |
760 | { "add", no_argument, NULL, 'a' }, | |
761 | { "delete", no_argument, NULL, 'd' }, | |
3b905b79 | 762 | { "update", no_argument, NULL, 'u' }, |
c4ecaf21 DB |
763 | { "type", required_argument, NULL, 't' }, |
764 | { "nr", required_argument, NULL, 'n' }, | |
765 | { "output", required_argument, NULL, 'o' }, | |
8ed48785 | 766 | { "pairs", no_argument, NULL, 'P' }, |
c4ecaf21 | 767 | { "help", no_argument, NULL, 'h' }, |
72bb1cc9 | 768 | { "version", no_argument, NULL, 'V' }, |
8275b732 | 769 | { "verbose", no_argument, NULL, 'v' }, |
c4ecaf21 DB |
770 | { NULL, 0, NULL, 0 } |
771 | }; | |
772 | ||
a29627cb KZ |
773 | static const ul_excl_t excl[] = { /* rows and cols in in ASCII order */ |
774 | { 'P','a','d','l','r','s' }, | |
775 | { 0 } | |
776 | }; | |
777 | int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT; | |
778 | ||
5c87aa1a BS |
779 | setlocale(LC_ALL, ""); |
780 | bindtextdomain(PACKAGE, LOCALEDIR); | |
781 | textdomain(PACKAGE); | |
757bbfad | 782 | atexit(close_stdout); |
5c87aa1a | 783 | |
8ed48785 | 784 | while ((c = getopt_long(argc, argv, |
3b905b79 | 785 | "abdglrsuvn:t:o:PhV", long_opts, NULL)) != -1) { |
a29627cb KZ |
786 | |
787 | err_exclusive_options(c, long_opts, excl, excl_st); | |
788 | ||
c4ecaf21 DB |
789 | switch(c) { |
790 | case 'a': | |
a29627cb | 791 | what = ACT_ADD; |
c4ecaf21 DB |
792 | break; |
793 | case 'b': | |
794 | partx_flags |= FL_BYTES; | |
795 | break; | |
796 | case 'd': | |
a29627cb | 797 | what = ACT_DELETE; |
c4ecaf21 DB |
798 | break; |
799 | case 'g': | |
016aa0ac | 800 | scols_flags |= PARTX_NOHEADINGS; |
c4ecaf21 DB |
801 | break; |
802 | case 'l': | |
a29627cb | 803 | what = ACT_LIST; |
c4ecaf21 DB |
804 | break; |
805 | case 'n': | |
af7df9ee | 806 | if (parse_range(optarg, &lower, &upper, 0)) |
c4ecaf21 DB |
807 | errx(EXIT_FAILURE, _("failed to parse --nr <M-N> range")); |
808 | break; | |
c4ecaf21 | 809 | case 'o': |
4e395c55 | 810 | outarg = optarg; |
c4ecaf21 | 811 | break; |
8ed48785 | 812 | case 'P': |
016aa0ac | 813 | scols_flags |= PARTX_EXPORT; |
a29627cb | 814 | what = ACT_SHOW; |
8ed48785 | 815 | break; |
c4ecaf21 | 816 | case 'r': |
016aa0ac | 817 | scols_flags |= PARTX_RAW; |
a29627cb | 818 | what = ACT_SHOW; |
c4ecaf21 | 819 | break; |
c4ecaf21 | 820 | case 's': |
a29627cb | 821 | what = ACT_SHOW; |
c4ecaf21 DB |
822 | break; |
823 | case 't': | |
824 | type = optarg; | |
825 | break; | |
3b905b79 PS |
826 | case 'u': |
827 | what = ACT_UPD; | |
828 | break; | |
c4ecaf21 DB |
829 | case 'v': |
830 | verbose = 1; | |
831 | break; | |
832 | case 'h': | |
833 | usage(stdout); | |
72bb1cc9 SK |
834 | case 'V': |
835 | printf(UTIL_LINUX_VERSION); | |
836 | return EXIT_SUCCESS; | |
c4ecaf21 DB |
837 | case '?': |
838 | default: | |
839 | usage(stderr); | |
840 | } | |
841 | } | |
842 | ||
6320c5aa | 843 | if (what == ACT_NONE) |
7cfd1b26 | 844 | what = ACT_SHOW; |
c4ecaf21 DB |
845 | |
846 | /* --show default, could by modified by -o */ | |
847 | if (what == ACT_SHOW && !ncolumns) { | |
848 | columns[ncolumns++] = COL_PARTNO; | |
849 | columns[ncolumns++] = COL_START; | |
850 | columns[ncolumns++] = COL_END; | |
851 | columns[ncolumns++] = COL_SECTORS; | |
852 | columns[ncolumns++] = COL_SIZE; | |
853 | columns[ncolumns++] = COL_NAME; | |
854 | columns[ncolumns++] = COL_UUID; | |
855 | } | |
856 | ||
4e395c55 MB |
857 | if (what == ACT_SHOW && outarg && |
858 | string_add_to_idarray(outarg, columns, ARRAY_SIZE(columns), | |
859 | &ncolumns, column_name_to_id) < 0) | |
860 | return EXIT_FAILURE; | |
861 | ||
c4ecaf21 DB |
862 | /* |
863 | * Note that 'partx /dev/sda1' == 'partx /dev/sda1 /dev/sda' | |
864 | * so assume that the device and/or disk are always the last | |
865 | * arguments to be passed to partx. | |
866 | */ | |
867 | if (optind == argc - 2) { | |
868 | /* passed 2 arguments: | |
869 | * /dev/sda1 /dev/sda : partition + whole-disk | |
870 | * -- /dev/sda1 : partition that should be used as a whole-disk | |
871 | */ | |
872 | device = argv[optind]; | |
873 | ||
874 | if (strcmp(device, "-") == 0) { | |
875 | device = NULL; | |
876 | wholedisk = xstrdup(argv[optind + 1]); | |
877 | } else { | |
878 | device = argv[optind]; | |
879 | wholedisk = xstrdup(argv[optind + 1]); | |
880 | } | |
881 | } else if (optind == argc - 1) { | |
882 | /* passed only one arg (ie: /dev/sda3 or /dev/sda) */ | |
883 | struct stat sb; | |
884 | ||
885 | device = argv[optind]; | |
886 | ||
887 | if (stat(device, &sb)) | |
add1b8af | 888 | err(EXIT_FAILURE, _("stat failed %s"), device); |
c4ecaf21 DB |
889 | |
890 | part_devno = sb.st_rdev; | |
891 | ||
892 | if (blkid_devno_to_wholedisk(part_devno, | |
893 | NULL, 0, &disk_devno) == 0 && | |
894 | part_devno != disk_devno) | |
895 | wholedisk = blkid_devno_to_devname(disk_devno); | |
896 | ||
897 | if (!wholedisk) { | |
898 | wholedisk = xstrdup(device); | |
899 | disk_devno = part_devno; | |
900 | device = NULL; | |
901 | part_devno = 0; | |
22853e4a | 902 | } |
22853e4a | 903 | } else |
c4ecaf21 DB |
904 | usage(stderr); |
905 | ||
906 | if (device && (upper || lower)) | |
e22d8b95 | 907 | errx(EXIT_FAILURE, _("--nr and <partition> are mutually exclusive")); |
c4ecaf21 DB |
908 | |
909 | assert(wholedisk); | |
910 | ||
911 | if (device) { | |
912 | /* use partno from given partition instead of --nr range, e.g: | |
913 | * partx -d /dev/sda3 | |
914 | * is the same like: | |
915 | * partx -d --nr 3 /dev/sda | |
916 | */ | |
917 | struct stat sb; | |
918 | ||
919 | if (!part_devno && !stat(device, &sb)) | |
920 | part_devno = sb.st_rdev; | |
921 | ||
922 | lower = upper = get_partno_from_device(device, part_devno); | |
923 | } | |
924 | ||
925 | if (verbose) | |
144df9a2 | 926 | printf(_("partition: %s, disk: %s, lower: %d, upper: %d\n"), |
2e2b6bb1 | 927 | device ? device : "none", wholedisk, lower, upper); |
c4ecaf21 DB |
928 | |
929 | if (what == ACT_ADD || what == ACT_DELETE) { | |
930 | struct stat x; | |
931 | ||
0e938113 DB |
932 | if (stat(wholedisk, &x)) |
933 | errx(EXIT_FAILURE, "%s", wholedisk); | |
934 | ||
935 | if (S_ISREG(x.st_mode)) { | |
936 | /* not a blkdev, try to associate it to a loop device */ | |
937 | if (what == ACT_DELETE) | |
938 | errx(EXIT_FAILURE, _("%s: cannot delete partitions"), | |
939 | wholedisk); | |
59d749c3 | 940 | if (!loopmod_supports_partscan()) |
0e938113 DB |
941 | errx(EXIT_FAILURE, _("%s: partitioned loop devices unsupported"), |
942 | wholedisk); | |
943 | assoc_loopdev(wholedisk); | |
944 | wholedisk = xstrdup(lc.device); | |
945 | } else if (!S_ISBLK(x.st_mode)) | |
c4ecaf21 DB |
946 | errx(EXIT_FAILURE, _("%s: not a block device"), wholedisk); |
947 | } | |
948 | if ((fd = open(wholedisk, O_RDONLY)) == -1) | |
289dcc90 | 949 | err(EXIT_FAILURE, _("cannot open %s"), wholedisk); |
c4ecaf21 DB |
950 | |
951 | if (what == ACT_DELETE) | |
952 | rc = del_parts(fd, wholedisk, disk_devno, lower, upper); | |
953 | else { | |
954 | blkid_probe pr = blkid_new_probe(); | |
955 | blkid_partlist ls = NULL; | |
956 | ||
957 | if (!pr || blkid_probe_set_device(pr, fd, 0, 0)) | |
958 | warnx(_("%s: failed to initialize blkid prober"), | |
959 | wholedisk); | |
960 | else | |
961 | ls = get_partlist(pr, wholedisk, type); | |
962 | ||
963 | if (ls) { | |
964 | int n = blkid_partlist_numof_partitions(ls); | |
965 | ||
966 | if (lower < 0) | |
967 | lower = n + lower + 1; | |
968 | if (upper < 0) | |
969 | upper = n + upper + 1; | |
970 | if (lower > upper) { | |
144df9a2 | 971 | warnx(_("specified range <%d:%d> " |
c4ecaf21 | 972 | "does not make sense"), lower, upper); |
6320c5aa | 973 | rc = -1, what = ACT_NONE; |
c4ecaf21 DB |
974 | } |
975 | ||
976 | switch (what) { | |
977 | case ACT_SHOW: | |
016aa0ac | 978 | rc = show_parts(ls, scols_flags, lower, upper); |
c4ecaf21 DB |
979 | break; |
980 | case ACT_LIST: | |
981 | rc = list_parts(ls, lower, upper); | |
982 | break; | |
983 | case ACT_ADD: | |
984 | rc = add_parts(fd, wholedisk, ls, lower, upper); | |
985 | break; | |
3b905b79 PS |
986 | case ACT_UPD: |
987 | rc = upd_parts(fd, wholedisk, disk_devno, ls, lower, upper); | |
6320c5aa SK |
988 | case ACT_NONE: |
989 | break; | |
990 | default: | |
991 | abort(); | |
c4ecaf21 DB |
992 | } |
993 | } | |
994 | blkid_free_probe(pr); | |
995 | } | |
996 | ||
0e938113 DB |
997 | if (loopdev) |
998 | loopcxt_deinit(&lc); | |
999 | ||
83874290 SK |
1000 | if (close_fd(fd) != 0) |
1001 | err(EXIT_FAILURE, _("write failed")); | |
1002 | ||
c4ecaf21 | 1003 | return rc ? EXIT_FAILURE : EXIT_SUCCESS; |
22853e4a | 1004 | } |