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Commit | Line | Data |
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e076b552 | 1 | #include <assert.h> |
fd6b7a7f KZ |
2 | #include <stdlib.h> |
3 | #include <stdio.h> | |
4 | #include <getopt.h> | |
5 | #include <string.h> | |
fd6b7a7f | 6 | #include <errno.h> |
5c36a0eb | 7 | #include <sys/stat.h> |
ffa63a3d | 8 | #include <unistd.h> |
6274b987 KC |
9 | #include <sys/types.h> |
10 | #include <sys/wait.h> | |
11 | #include <fcntl.h> | |
3399a218 | 12 | #include <stdint.h> |
57a60bf0 | 13 | #include <ctype.h> |
81772d3c | 14 | |
64b58881 | 15 | #include <libmount.h> |
b5b2c388 | 16 | |
d335c9bd KZ |
17 | #include "c.h" |
18 | #include "nls.h" | |
3399a218 MK |
19 | #include "bitops.h" |
20 | #include "blkdev.h" | |
4e270e3f | 21 | #include "pathnames.h" |
bfbb12d2 | 22 | #include "xalloc.h" |
efb8854f | 23 | #include "closestream.h" |
167eaed7 | 24 | |
d335c9bd | 25 | #include "swapheader.h" |
0b0c231f | 26 | #include "swapon-common.h" |
e076b552 SK |
27 | #include "strutils.h" |
28 | #include "tt.h" | |
0b0c231f | 29 | |
6274b987 KC |
30 | #define PATH_MKSWAP "/sbin/mkswap" |
31 | ||
ffa63a3d MF |
32 | #ifdef HAVE_SYS_SWAP_H |
33 | # include <sys/swap.h> | |
34 | #endif | |
35 | ||
c2301380 HD |
36 | #ifndef SWAP_FLAG_DISCARD |
37 | # define SWAP_FLAG_DISCARD 0x10000 /* discard swap cluster after use */ | |
38 | #endif | |
39 | ||
9514a612 KZ |
40 | #ifndef SWAP_FLAG_PREFER |
41 | # define SWAP_FLAG_PREFER 0x8000 /* set if swap priority specified */ | |
42 | #endif | |
43 | ||
44 | #ifndef SWAP_FLAG_PRIO_MASK | |
45 | # define SWAP_FLAG_PRIO_MASK 0x7fff | |
46 | #endif | |
47 | ||
48 | #ifndef SWAP_FLAG_PRIO_SHIFT | |
49 | # define SWAP_FLAG_PRIO_SHIFT 0 | |
50 | #endif | |
51 | ||
ffa63a3d MF |
52 | #ifndef SWAPON_HAS_TWO_ARGS |
53 | /* libc is insane, let's call the kernel */ | |
54 | # include <sys/syscall.h> | |
55 | # define swapon(path, flags) syscall(SYS_swapon, path, flags) | |
ffa63a3d MF |
56 | #endif |
57 | ||
63cccae4 | 58 | #define QUIET 1 |
12ac2bbe | 59 | #define CANONIC 1 |
63cccae4 | 60 | |
3399a218 MK |
61 | #define MAX_PAGESIZE (64 * 1024) |
62 | ||
e8be80dd KZ |
63 | enum { |
64 | SIG_SWAPSPACE = 1, | |
65 | SIG_SWSUSPEND | |
66 | }; | |
67 | ||
617d8a3b KZ |
68 | #define SWAP_SIGNATURE "SWAPSPACE2" |
69 | #define SWAP_SIGNATURE_SZ (sizeof(SWAP_SIGNATURE) - 1) | |
70 | ||
16ff9813 TK |
71 | static int all; |
72 | static int priority = -1; /* non-prioritized swap by default */ | |
73 | static int discard; | |
6dbe3af9 | 74 | |
95f1bdee | 75 | /* If true, don't complain if the device/file doesn't exist */ |
16ff9813 TK |
76 | static int ifexists; |
77 | static int fixpgsz; | |
16ff9813 | 78 | static int verbose; |
95f1bdee | 79 | |
e076b552 SK |
80 | /* column names */ |
81 | struct colinfo { | |
82 | const char *name; /* header */ | |
83 | double whint; /* width hint (N < 1 is in percent of termwidth) */ | |
84 | int flags; /* TT_FL_* */ | |
85 | const char *help; | |
86 | }; | |
87 | enum { COL_PATH, COL_TYPE, COL_SIZE, COL_USED, COL_PRIO }; | |
88 | struct colinfo infos[] = { | |
89 | [COL_PATH] = { "NAME", 0.20, 0, N_("device file or partition path") }, | |
90 | [COL_TYPE] = { "TYPE", 0.20, TT_FL_TRUNC, N_("type of the device")}, | |
91 | [COL_SIZE] = { "SIZE", 0.20, TT_FL_RIGHT, N_("size of the swap area")}, | |
92 | [COL_USED] = { "USED", 0.20, TT_FL_RIGHT, N_("bytes in use")}, | |
93 | [COL_PRIO] = { "PRIO", 0.20, TT_FL_RIGHT, N_("swap priority")}, | |
94 | }; | |
95 | #define NCOLS ARRAY_SIZE(infos) | |
96 | static int columns[NCOLS], ncolumns; | |
97 | ||
98 | static int column_name_to_id(const char *name, size_t namesz) | |
99 | { | |
100 | size_t i; | |
101 | ||
102 | assert(name); | |
103 | ||
104 | for (i = 0; i < NCOLS; i++) { | |
105 | const char *cn = infos[i].name; | |
106 | ||
107 | if (!strncasecmp(name, cn, namesz) && !*(cn + namesz)) | |
108 | return i; | |
109 | } | |
110 | warnx(_("unknown column: %s"), name); | |
111 | return -1; | |
112 | } | |
113 | ||
114 | static inline int get_column_id(int num) | |
115 | { | |
116 | assert(ARRAY_SIZE(columns) == NCOLS); | |
117 | assert(num < ncolumns); | |
118 | assert(columns[num] < (int)NCOLS); | |
119 | ||
120 | return columns[num]; | |
121 | } | |
122 | ||
123 | static inline struct colinfo *get_column_info(unsigned num) | |
124 | { | |
125 | return &infos[get_column_id(num)]; | |
126 | } | |
127 | ||
7ae8b469 | 128 | static void add_tt_line(struct tt *tt, struct libmnt_fs *fs, int bytes) |
e076b552 SK |
129 | { |
130 | int i; | |
131 | struct tt_line *line; | |
132 | ||
133 | assert(tt); | |
134 | assert(fs); | |
135 | ||
136 | line = tt_add_line(tt, NULL); | |
137 | if (!line) { | |
138 | warn(_("failed to add line to output")); | |
139 | return; | |
140 | } | |
141 | ||
142 | for (i = 0; i < ncolumns; i++) { | |
143 | char *str = NULL; | |
7ae8b469 | 144 | off_t size; |
e076b552 SK |
145 | |
146 | switch (get_column_id(i)) { | |
147 | case COL_PATH: | |
a0e35e30 | 148 | xasprintf(&str, "%s", mnt_fs_get_source(fs)); |
e076b552 SK |
149 | break; |
150 | case COL_TYPE: | |
a0e35e30 | 151 | xasprintf(&str, "%s", mnt_fs_get_swaptype(fs)); |
e076b552 SK |
152 | break; |
153 | case COL_SIZE: | |
7ae8b469 SK |
154 | size = mnt_fs_get_size(fs); |
155 | size *= 1024; /* convert to bytes */ | |
156 | if (bytes) | |
a0e35e30 | 157 | xasprintf(&str, "%jd", size); |
7ae8b469 SK |
158 | else |
159 | str = size_to_human_string(SIZE_SUFFIX_1LETTER, size); | |
e076b552 SK |
160 | break; |
161 | case COL_USED: | |
7ae8b469 SK |
162 | size = mnt_fs_get_usedsize(fs); |
163 | size *= 1024; /* convert to bytes */ | |
164 | if (bytes) | |
a0e35e30 | 165 | xasprintf(&str, "%jd", size); |
7ae8b469 SK |
166 | else |
167 | str = size_to_human_string(SIZE_SUFFIX_1LETTER, size); | |
e076b552 SK |
168 | break; |
169 | case COL_PRIO: | |
a0e35e30 | 170 | xasprintf(&str, "%d", mnt_fs_get_priority(fs)); |
e076b552 SK |
171 | break; |
172 | default: | |
173 | break; | |
174 | } | |
175 | ||
a0e35e30 | 176 | if (str) |
e076b552 SK |
177 | tt_line_set_data(line, i, str); |
178 | } | |
179 | return; | |
180 | } | |
181 | ||
d335c9bd | 182 | static int display_summary(void) |
fd6b7a7f | 183 | { |
5072b90a | 184 | struct libmnt_table *st = get_swaps(); |
64b58881 KZ |
185 | struct libmnt_iter *itr; |
186 | struct libmnt_fs *fs; | |
fd6b7a7f | 187 | |
64b58881 | 188 | if (!st) |
57a60bf0 | 189 | return -1; |
e8f26419 | 190 | |
64b58881 KZ |
191 | itr = mnt_new_iter(MNT_ITER_FORWARD); |
192 | if (!itr) | |
193 | err(EXIT_FAILURE, _("failed to initialize libmount iterator")); | |
57a60bf0 | 194 | |
64b58881 | 195 | if (mnt_table_get_nents(st) > 0) |
0aec470c | 196 | printf(_("%s\t\t\t\tType\t\tSize\tUsed\tPriority\n"), _("Filename")); |
64b58881 KZ |
197 | |
198 | while (mnt_table_next_fs(st, itr, &fs) == 0) { | |
199 | printf("%-39s\t%s\t%jd\t%jd\t%d\n", | |
200 | mnt_fs_get_source(fs), | |
201 | mnt_fs_get_swaptype(fs), | |
202 | mnt_fs_get_size(fs), | |
203 | mnt_fs_get_usedsize(fs), | |
204 | mnt_fs_get_priority(fs)); | |
57a60bf0 | 205 | } |
fd6b7a7f | 206 | |
64b58881 KZ |
207 | mnt_free_iter(itr); |
208 | return 0; | |
fd6b7a7f KZ |
209 | } |
210 | ||
7ae8b469 | 211 | static int show_table(int tt_flags, int bytes) |
e076b552 SK |
212 | { |
213 | struct libmnt_table *st = get_swaps(); | |
880f09c8 | 214 | struct libmnt_iter *itr = NULL; |
e076b552 SK |
215 | struct libmnt_fs *fs; |
216 | ||
217 | int i, rc = 0; | |
880f09c8 | 218 | struct tt *tt = NULL; |
e076b552 SK |
219 | |
220 | if (!st) | |
221 | return -1; | |
222 | ||
223 | itr = mnt_new_iter(MNT_ITER_FORWARD); | |
224 | if (!itr) | |
225 | err(EXIT_FAILURE, _("failed to initialize libmount iterator")); | |
226 | ||
227 | tt = tt_new_table(tt_flags); | |
228 | if (!tt) { | |
229 | warn(_("failed to initialize output table")); | |
880f09c8 | 230 | goto done; |
e076b552 SK |
231 | } |
232 | ||
233 | for (i = 0; i < ncolumns; i++) { | |
234 | struct colinfo *col = get_column_info(i); | |
235 | ||
236 | if (!tt_define_column(tt, col->name, col->whint, col->flags)) { | |
237 | warnx(_("failed to initialize output column")); | |
238 | rc = -1; | |
239 | goto done; | |
240 | } | |
241 | } | |
242 | ||
243 | while (mnt_table_next_fs(st, itr, &fs) == 0) | |
7ae8b469 | 244 | add_tt_line(tt, fs, bytes); |
e076b552 | 245 | |
e076b552 SK |
246 | tt_print_table(tt); |
247 | done: | |
880f09c8 | 248 | mnt_free_iter(itr); |
e076b552 SK |
249 | tt_free_table(tt); |
250 | return rc; | |
251 | } | |
252 | ||
6274b987 | 253 | /* calls mkswap */ |
d335c9bd KZ |
254 | static int swap_reinitialize(const char *device, |
255 | const char *label, const char *uuid) | |
b5b2c388 | 256 | { |
6274b987 KC |
257 | pid_t pid; |
258 | int status, ret; | |
259 | char *cmd[7]; | |
260 | int idx=0; | |
261 | ||
0d761944 KZ |
262 | warnx(_("%s: reinitializing the swap."), device); |
263 | ||
6274b987 KC |
264 | switch((pid=fork())) { |
265 | case -1: /* fork error */ | |
d51d05d3 | 266 | warn(_("fork failed")); |
6274b987 KC |
267 | return -1; |
268 | ||
269 | case 0: /* child */ | |
270 | cmd[idx++] = PATH_MKSWAP; | |
271 | if (label && *label) { | |
272 | cmd[idx++] = "-L"; | |
273 | cmd[idx++] = (char *) label; | |
274 | } | |
275 | if (uuid && *uuid) { | |
276 | cmd[idx++] = "-U"; | |
277 | cmd[idx++] = (char *) uuid; | |
278 | } | |
279 | cmd[idx++] = (char *) device; | |
280 | cmd[idx++] = NULL; | |
281 | execv(cmd[0], cmd); | |
07ff972e | 282 | err(EXIT_FAILURE, _("failed to execute %s"), cmd[0]); |
6274b987 KC |
283 | |
284 | default: /* parent */ | |
285 | do { | |
286 | if ((ret = waitpid(pid, &status, 0)) < 0 | |
287 | && errno == EINTR) | |
288 | continue; | |
289 | else if (ret < 0) { | |
d51d05d3 | 290 | warn(_("waitpid failed")); |
6274b987 KC |
291 | return -1; |
292 | } | |
293 | } while (0); | |
294 | ||
295 | /* mkswap returns: 0=suss, 1=error */ | |
296 | if (WIFEXITED(status) && WEXITSTATUS(status)==0) | |
297 | return 0; /* ok */ | |
f8ff4ebb | 298 | break; |
6274b987 KC |
299 | } |
300 | return -1; /* error */ | |
301 | } | |
302 | ||
d335c9bd | 303 | static int swap_rewrite_signature(const char *devname, unsigned int pagesize) |
617d8a3b KZ |
304 | { |
305 | int fd, rc = -1; | |
306 | ||
307 | fd = open(devname, O_WRONLY); | |
308 | if (fd == -1) { | |
289dcc90 | 309 | warn(_("cannot open %s"), devname); |
617d8a3b KZ |
310 | return -1; |
311 | } | |
312 | ||
5dd53f43 KZ |
313 | if (lseek(fd, pagesize - SWAP_SIGNATURE_SZ, SEEK_SET) < 0) { |
314 | warn(_("%s: lseek failed"), devname); | |
617d8a3b | 315 | goto err; |
5dd53f43 | 316 | } |
617d8a3b KZ |
317 | |
318 | if (write(fd, (void *) SWAP_SIGNATURE, | |
5dd53f43 KZ |
319 | SWAP_SIGNATURE_SZ) != SWAP_SIGNATURE_SZ) { |
320 | warn(_("%s: write signature failed"), devname); | |
617d8a3b | 321 | goto err; |
5dd53f43 | 322 | } |
617d8a3b KZ |
323 | |
324 | rc = 0; | |
325 | err: | |
326 | close(fd); | |
327 | return rc; | |
328 | } | |
329 | ||
d335c9bd | 330 | static int swap_detect_signature(const char *buf, int *sig) |
3399a218 | 331 | { |
e8be80dd KZ |
332 | if (memcmp(buf, "SWAP-SPACE", 10) == 0 || |
333 | memcmp(buf, "SWAPSPACE2", 10) == 0) | |
334 | *sig = SIG_SWAPSPACE; | |
335 | ||
336 | else if (memcmp(buf, "S1SUSPEND", 9) == 0 || | |
337 | memcmp(buf, "S2SUSPEND", 9) == 0 || | |
338 | memcmp(buf, "ULSUSPEND", 9) == 0 || | |
5a16af58 KZ |
339 | memcmp(buf, "\xed\xc3\x02\xe9\x98\x56\xe5\x0c", 8) == 0 || |
340 | memcmp(buf, "LINHIB0001", 10) == 0) | |
e8be80dd KZ |
341 | *sig = SIG_SWSUSPEND; |
342 | else | |
343 | return 0; | |
3399a218 | 344 | |
e8be80dd | 345 | return 1; |
3399a218 MK |
346 | } |
347 | ||
d335c9bd | 348 | static char *swap_get_header(int fd, int *sig, unsigned int *pagesize) |
3399a218 | 349 | { |
3399a218 | 350 | char *buf; |
e8be80dd KZ |
351 | ssize_t datasz; |
352 | unsigned int page; | |
3399a218 | 353 | |
e8be80dd KZ |
354 | *pagesize = 0; |
355 | *sig = 0; | |
3399a218 | 356 | |
bfbb12d2 | 357 | buf = xmalloc(MAX_PAGESIZE); |
3399a218 MK |
358 | |
359 | datasz = read(fd, buf, MAX_PAGESIZE); | |
e8be80dd KZ |
360 | if (datasz == (ssize_t) -1) |
361 | goto err; | |
3399a218 MK |
362 | |
363 | for (page = 0x1000; page <= MAX_PAGESIZE; page <<= 1) { | |
364 | /* skip 32k pagesize since this does not seem to | |
365 | * be supported */ | |
366 | if (page == 0x8000) | |
367 | continue; | |
368 | /* the smallest swap area is PAGE_SIZE*10, it means | |
369 | * 40k, that's less than MAX_PAGESIZE */ | |
24f010e8 | 370 | if (datasz < 0 || (size_t) datasz < (page - SWAP_SIGNATURE_SZ)) |
3399a218 | 371 | break; |
617d8a3b | 372 | if (swap_detect_signature(buf + page - SWAP_SIGNATURE_SZ, sig)) { |
e8be80dd | 373 | *pagesize = page; |
3399a218 MK |
374 | break; |
375 | } | |
376 | } | |
377 | ||
e8be80dd KZ |
378 | if (*pagesize) |
379 | return buf; | |
3399a218 | 380 | err: |
e8be80dd KZ |
381 | free(buf); |
382 | return NULL; | |
383 | } | |
384 | ||
385 | /* returns real size of swap space */ | |
d335c9bd KZ |
386 | static unsigned long long swap_get_size(const char *hdr, const char *devname, |
387 | unsigned int pagesize) | |
e8be80dd KZ |
388 | { |
389 | unsigned int last_page = 0; | |
390 | int swap_version = 0; | |
391 | int flip = 0; | |
392 | struct swap_header_v1_2 *s; | |
393 | ||
394 | s = (struct swap_header_v1_2 *) hdr; | |
395 | if (s->version == 1) { | |
396 | swap_version = 1; | |
397 | last_page = s->last_page; | |
398 | } else if (swab32(s->version) == 1) { | |
399 | flip = 1; | |
400 | swap_version = 1; | |
401 | last_page = swab32(s->last_page); | |
402 | } | |
403 | if (verbose) | |
04c94441 KZ |
404 | warnx(_("%s: found swap signature: version %d, " |
405 | "page-size %d, %s byte order"), | |
e8be80dd | 406 | devname, |
e8be80dd | 407 | swap_version, |
04c94441 KZ |
408 | pagesize / 1024, |
409 | flip ? _("different") : _("same")); | |
e8be80dd | 410 | |
98e9ff61 | 411 | return ((unsigned long long) last_page + 1) * pagesize; |
3399a218 MK |
412 | } |
413 | ||
d335c9bd | 414 | static void swap_get_info(const char *hdr, char **label, char **uuid) |
b5b2c388 KZ |
415 | { |
416 | struct swap_header_v1_2 *s = (struct swap_header_v1_2 *) hdr; | |
417 | ||
418 | if (s && *s->volume_name && label) | |
419 | *label = xstrdup(s->volume_name); | |
420 | ||
421 | if (s && *s->uuid && uuid) { | |
422 | const unsigned char *u = s->uuid; | |
423 | char str[37]; | |
424 | ||
425 | snprintf(str, sizeof(str), | |
426 | "%02x%02x%02x%02x-" | |
427 | "%02x%02x-%02x%02x-" | |
428 | "%02x%02x-%02x%02x%02x%02x%02x%02x", | |
429 | u[0], u[1], u[2], u[3], | |
430 | u[4], u[5], u[6], u[7], | |
431 | u[8], u[9], u[10], u[11], u[12], u[13], u[14], u[15]); | |
432 | *uuid = xstrdup(str); | |
433 | } | |
434 | } | |
435 | ||
d335c9bd | 436 | static int swapon_checks(const char *special) |
05c79b78 | 437 | { |
63cccae4 | 438 | struct stat st; |
05c79b78 KZ |
439 | int fd = -1, sig; |
440 | char *hdr = NULL; | |
e8be80dd KZ |
441 | unsigned int pagesize; |
442 | unsigned long long devsize = 0; | |
cd04b26b | 443 | int permMask; |
63cccae4 | 444 | |
63cccae4 | 445 | if (stat(special, &st) < 0) { |
add1b8af | 446 | warn(_("stat failed %s"), special); |
05c79b78 | 447 | goto err; |
63cccae4 KZ |
448 | } |
449 | ||
cd04b26b KZ |
450 | permMask = S_ISBLK(st.st_mode) ? 07007 : 07077; |
451 | if ((st.st_mode & permMask) != 0) | |
452 | warnx(_("%s: insecure permissions %04o, %04o suggested."), | |
d51d05d3 | 453 | special, st.st_mode & 07777, |
88530f9f | 454 | ~permMask & 0666); |
306c1df2 | 455 | |
cd04b26b KZ |
456 | if (S_ISREG(st.st_mode) && st.st_uid != 0) |
457 | warnx(_("%s: insecure file owner %d, 0 (root) suggested."), | |
306c1df2 | 458 | special, st.st_uid); |
88530f9f KZ |
459 | |
460 | /* test for holes by LBT */ | |
461 | if (S_ISREG(st.st_mode)) { | |
462 | if (st.st_blocks * 512 < st.st_size) { | |
d51d05d3 KZ |
463 | warnx(_("%s: skipping - it appears to have holes."), |
464 | special); | |
05c79b78 | 465 | goto err; |
88530f9f | 466 | } |
e8be80dd KZ |
467 | devsize = st.st_size; |
468 | } | |
469 | ||
470 | fd = open(special, O_RDONLY); | |
471 | if (fd == -1) { | |
289dcc90 | 472 | warn(_("cannot open %s"), special); |
05c79b78 | 473 | goto err; |
e8be80dd KZ |
474 | } |
475 | ||
05c79b78 KZ |
476 | if (S_ISBLK(st.st_mode) && blkdev_get_size(fd, &devsize)) { |
477 | warn(_("%s: get size failed"), special); | |
478 | goto err; | |
e8be80dd KZ |
479 | } |
480 | ||
481 | hdr = swap_get_header(fd, &sig, &pagesize); | |
482 | if (!hdr) { | |
d51d05d3 | 483 | warn(_("%s: read swap header failed"), special); |
05c79b78 | 484 | goto err; |
88530f9f KZ |
485 | } |
486 | ||
e8be80dd KZ |
487 | if (sig == SIG_SWAPSPACE && pagesize) { |
488 | unsigned long long swapsize = | |
489 | swap_get_size(hdr, special, pagesize); | |
24f010e8 KZ |
490 | int syspg = getpagesize(); |
491 | ||
3399a218 | 492 | if (verbose) |
e6b0611b | 493 | warnx(_("%s: pagesize=%d, swapsize=%llu, devsize=%llu"), |
e8be80dd KZ |
494 | special, pagesize, swapsize, devsize); |
495 | ||
496 | if (swapsize > devsize) { | |
497 | if (verbose) | |
d51d05d3 KZ |
498 | warnx(_("%s: last_page 0x%08llx is larger" |
499 | " than actual size of swapspace"), | |
e8be80dd | 500 | special, swapsize); |
24f010e8 | 501 | } else if (syspg < 0 || (unsigned) syspg != pagesize) { |
0d761944 | 502 | if (fixpgsz) { |
b5b2c388 KZ |
503 | char *label = NULL, *uuid = NULL; |
504 | int rc; | |
505 | ||
506 | swap_get_info(hdr, &label, &uuid); | |
507 | ||
93bfcc94 | 508 | warnx(_("%s: swap format pagesize does not match."), |
0d761944 | 509 | special); |
b5b2c388 KZ |
510 | rc = swap_reinitialize(special, label, uuid); |
511 | free(label); | |
512 | free(uuid); | |
513 | if (rc < 0) | |
0d761944 KZ |
514 | goto err; |
515 | } else | |
93bfcc94 KZ |
516 | warnx(_("%s: swap format pagesize does not match. " |
517 | "(Use --fixpgsz to reinitialize it.)"), | |
0d761944 | 518 | special); |
e8be80dd KZ |
519 | } |
520 | } else if (sig == SIG_SWSUSPEND) { | |
521 | /* We have to reinitialize swap with old (=useless) software suspend | |
522 | * data. The problem is that if we don't do it, then we get data | |
523 | * corruption the next time an attempt at unsuspending is made. | |
524 | */ | |
d51d05d3 | 525 | warnx(_("%s: software suspend data detected. " |
617d8a3b | 526 | "Rewriting the swap signature."), |
d51d05d3 | 527 | special); |
617d8a3b | 528 | if (swap_rewrite_signature(special, pagesize) < 0) |
05c79b78 | 529 | goto err; |
6274b987 KC |
530 | } |
531 | ||
05c79b78 KZ |
532 | free(hdr); |
533 | close(fd); | |
534 | return 0; | |
05c79b78 KZ |
535 | err: |
536 | if (fd != -1) | |
537 | close(fd); | |
538 | free(hdr); | |
539 | return -1; | |
540 | } | |
63cccae4 | 541 | |
d335c9bd KZ |
542 | static int do_swapon(const char *orig_special, int prio, |
543 | int fl_discard, int canonic) | |
544 | { | |
05c79b78 KZ |
545 | int status; |
546 | const char *special = orig_special; | |
547 | int flags = 0; | |
63cccae4 | 548 | |
05c79b78 | 549 | if (verbose) |
d9f07b10 | 550 | printf(_("swapon %s\n"), orig_special); |
05c79b78 KZ |
551 | |
552 | if (!canonic) { | |
e5157fc9 | 553 | special = mnt_resolve_spec(orig_special, mntcache); |
05c79b78 KZ |
554 | if (!special) |
555 | return cannot_find(orig_special); | |
63cccae4 | 556 | } |
ffa63a3d | 557 | |
05c79b78 KZ |
558 | if (swapon_checks(special)) |
559 | return -1; | |
560 | ||
561 | #ifdef SWAP_FLAG_PREFER | |
562 | if (prio >= 0) { | |
563 | if (prio > SWAP_FLAG_PRIO_MASK) | |
564 | prio = SWAP_FLAG_PRIO_MASK; | |
565 | flags = SWAP_FLAG_PREFER | |
566 | | ((prio & SWAP_FLAG_PRIO_MASK) | |
567 | << SWAP_FLAG_PRIO_SHIFT); | |
568 | } | |
569 | #endif | |
c2301380 HD |
570 | if (fl_discard) |
571 | flags |= SWAP_FLAG_DISCARD; | |
572 | ||
05c79b78 | 573 | status = swapon(special, flags); |
d51d05d3 KZ |
574 | if (status < 0) |
575 | warn(_("%s: swapon failed"), orig_special); | |
63cccae4 KZ |
576 | |
577 | return status; | |
578 | } | |
579 | ||
d335c9bd KZ |
580 | static int swapon_by_label(const char *label, int prio, int dsc) |
581 | { | |
e5157fc9 | 582 | const char *special = mnt_resolve_tag("LABEL", label, mntcache); |
c2301380 HD |
583 | return special ? do_swapon(special, prio, dsc, CANONIC) : |
584 | cannot_find(label); | |
756bfd01 KZ |
585 | } |
586 | ||
d335c9bd KZ |
587 | static int swapon_by_uuid(const char *uuid, int prio, int dsc) |
588 | { | |
e5157fc9 | 589 | const char *special = mnt_resolve_tag("UUID", uuid, mntcache); |
c2301380 HD |
590 | return special ? do_swapon(special, prio, dsc, CANONIC) : |
591 | cannot_find(uuid); | |
756bfd01 KZ |
592 | } |
593 | ||
d335c9bd KZ |
594 | static int swapon_all(void) |
595 | { | |
5072b90a KZ |
596 | struct libmnt_table *tb = get_fstab(); |
597 | struct libmnt_iter *itr; | |
598 | struct libmnt_fs *fs; | |
63cccae4 | 599 | int status = 0; |
63cccae4 | 600 | |
5072b90a | 601 | if (!tb) |
d335c9bd | 602 | err(EXIT_FAILURE, _("failed to parse %s"), mnt_get_fstab_path()); |
756bfd01 | 603 | |
5072b90a KZ |
604 | itr = mnt_new_iter(MNT_ITER_FORWARD); |
605 | if (!itr) | |
606 | err(EXIT_FAILURE, _("failed to initialize libmount iterator")); | |
756bfd01 | 607 | |
5072b90a KZ |
608 | while (mnt_table_find_next_fs(tb, itr, match_swap, NULL, &fs) == 0) { |
609 | /* defaults */ | |
610 | int pri = priority, dsc = discard, nofail = ifexists; | |
611 | char *p, *src; | |
1b414d89 | 612 | |
5072b90a | 613 | if (mnt_fs_get_option(fs, "noauto", NULL, NULL) == 0) |
1b414d89 | 614 | continue; |
5072b90a KZ |
615 | if (mnt_fs_get_option(fs, "discard", NULL, NULL) == 0) |
616 | dsc = 1; | |
617 | if (mnt_fs_get_option(fs, "nofail", NULL, NULL) == 0) | |
618 | nofail = 1; | |
619 | if (mnt_fs_get_option(fs, "pri", &p, NULL) == 0 && p) | |
620 | pri = atoi(p); | |
621 | ||
622 | src = mnt_resolve_spec(mnt_fs_get_source(fs), mntcache); | |
623 | if (!src) { | |
a5fd3d68 | 624 | if (!nofail) |
5072b90a | 625 | status |= cannot_find(mnt_fs_get_source(fs)); |
756bfd01 | 626 | continue; |
1b414d89 | 627 | } |
756bfd01 | 628 | |
5072b90a KZ |
629 | if (!is_active_swap(src) && |
630 | (!nofail || !access(src, R_OK))) | |
631 | status |= do_swapon(src, pri, dsc, CANONIC); | |
756bfd01 | 632 | } |
756bfd01 | 633 | |
5072b90a | 634 | mnt_free_iter(itr); |
756bfd01 KZ |
635 | return status; |
636 | } | |
637 | ||
8b0d5341 KZ |
638 | static void __attribute__ ((__noreturn__)) usage(FILE * out) |
639 | { | |
e09bd8d0 | 640 | size_t i; |
8b0d5341 KZ |
641 | fputs(USAGE_HEADER, out); |
642 | ||
643 | fprintf(out, _(" %s [options] [<spec>]\n"), program_invocation_short_name); | |
644 | ||
645 | fputs(USAGE_OPTIONS, out); | |
646 | fputs(_(" -a, --all enable all swaps from /etc/fstab\n" | |
647 | " -d, --discard discard freed pages before they are reused\n" | |
59114ba3 | 648 | " -e, --ifexists silently skip devices that do not exist\n" |
8b0d5341 KZ |
649 | " -f, --fixpgsz reinitialize the swap space if necessary\n" |
650 | " -p, --priority <prio> specify the priority of the swap device\n" | |
e076b552 SK |
651 | " -s, --summary display summary about used swap devices\n" |
652 | " --show[=<columns>] display summary in definable table\n" | |
653 | " --noheadings don't print headings, use with --show\n" | |
654 | " --raw use the raw output format, use with --show\n" | |
7ae8b469 | 655 | " --bytes display swap size in bytes in --show output\n" |
8b0d5341 KZ |
656 | " -v, --verbose verbose mode\n"), out); |
657 | ||
658 | fputs(USAGE_SEPARATOR, out); | |
659 | fputs(USAGE_HELP, out); | |
660 | fputs(USAGE_VERSION, out); | |
661 | ||
662 | fputs(_("\nThe <spec> parameter:\n" \ | |
9f9d0f21 KZ |
663 | " -L <label> synonym for LABEL=<label>\n" |
664 | " -U <uuid> synonym for UUID=<uuid>\n" | |
665 | " LABEL=<label> specifies device by swap area label\n" | |
666 | " UUID=<uuid> specifies device by swap area UUID\n" | |
667 | " PARTLABEL=<label> specifies device by partition label\n" | |
668 | " PARTUUID=<uuid> specifies device by partition UUID\n" | |
669 | " <device> name of device to be used\n" | |
8b0d5341 KZ |
670 | " <file> name of file to be used\n"), out); |
671 | ||
e076b552 | 672 | fputs(_("\nAvailable columns (for --show):\n"), out); |
e09bd8d0 | 673 | for (i = 0; i < NCOLS; i++) |
e076b552 SK |
674 | fprintf(out, " %4s %s\n", infos[i].name, _(infos[i].help)); |
675 | ||
8b0d5341 KZ |
676 | fprintf(out, USAGE_MAN_TAIL("swapon(8)")); |
677 | exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS); | |
678 | } | |
679 | ||
d9f07b10 KZ |
680 | int main(int argc, char *argv[]) |
681 | { | |
8b0d5341 | 682 | int status = 0, c; |
e076b552 | 683 | int show = 0, tt_flags = 0; |
7ae8b469 | 684 | int bytes = 0; |
0b0c231f | 685 | size_t i; |
756bfd01 | 686 | |
e076b552 SK |
687 | enum { |
688 | SHOW_OPTION = CHAR_MAX + 1, | |
689 | RAW_OPTION, | |
7ae8b469 SK |
690 | NOHEADINGS_OPTION, |
691 | BYTES_OPTION | |
e076b552 SK |
692 | }; |
693 | ||
8b0d5341 KZ |
694 | static const struct option long_opts[] = { |
695 | { "priority", 1, 0, 'p' }, | |
696 | { "discard", 0, 0, 'd' }, | |
697 | { "ifexists", 0, 0, 'e' }, | |
698 | { "summary", 0, 0, 's' }, | |
699 | { "fixpgsz", 0, 0, 'f' }, | |
700 | { "all", 0, 0, 'a' }, | |
701 | { "help", 0, 0, 'h' }, | |
702 | { "verbose", 0, 0, 'v' }, | |
703 | { "version", 0, 0, 'V' }, | |
e076b552 SK |
704 | { "show", 2, 0, SHOW_OPTION }, |
705 | { "noheadings", 0, 0, NOHEADINGS_OPTION }, | |
706 | { "raw", 0, 0, RAW_OPTION }, | |
7ae8b469 | 707 | { "bytes", 0, 0, BYTES_OPTION }, |
8b0d5341 KZ |
708 | { NULL, 0, 0, 0 } |
709 | }; | |
710 | ||
d9f07b10 KZ |
711 | setlocale(LC_ALL, ""); |
712 | bindtextdomain(PACKAGE, LOCALEDIR); | |
713 | textdomain(PACKAGE); | |
714 | atexit(close_stdout); | |
715 | ||
716 | mnt_init_debug(0); | |
717 | mntcache = mnt_new_cache(); | |
718 | ||
c2301380 | 719 | while ((c = getopt_long(argc, argv, "ahdefp:svVL:U:", |
8b0d5341 | 720 | long_opts, NULL)) != -1) { |
63cccae4 KZ |
721 | switch (c) { |
722 | case 'a': /* all */ | |
723 | ++all; | |
724 | break; | |
725 | case 'h': /* help */ | |
8b0d5341 | 726 | usage(stdout); |
63cccae4 KZ |
727 | break; |
728 | case 'p': /* priority */ | |
9db6a749 SK |
729 | priority = strtos16_or_err(optarg, |
730 | _("failed to parse priority")); | |
63cccae4 | 731 | break; |
756bfd01 | 732 | case 'L': |
0b0c231f | 733 | add_label(optarg); |
756bfd01 KZ |
734 | break; |
735 | case 'U': | |
0b0c231f | 736 | add_uuid(optarg); |
756bfd01 | 737 | break; |
c2301380 HD |
738 | case 'd': |
739 | discard = 1; | |
740 | break; | |
95f1bdee KZ |
741 | case 'e': /* ifexists */ |
742 | ifexists = 1; | |
743 | break; | |
0d761944 KZ |
744 | case 'f': |
745 | fixpgsz = 1; | |
746 | break; | |
63cccae4 KZ |
747 | case 's': /* status report */ |
748 | status = display_summary(); | |
8b0d5341 | 749 | return status; |
63cccae4 KZ |
750 | case 'v': /* be chatty */ |
751 | ++verbose; | |
752 | break; | |
e076b552 SK |
753 | case SHOW_OPTION: |
754 | if (optarg) { | |
755 | ncolumns = string_to_idarray(optarg, | |
756 | columns, | |
757 | ARRAY_SIZE(columns), | |
758 | column_name_to_id); | |
759 | if (ncolumns < 0) | |
760 | return EXIT_FAILURE; | |
761 | } | |
762 | show = 1; | |
763 | break; | |
764 | case NOHEADINGS_OPTION: | |
765 | tt_flags |= TT_FL_NOHEADINGS; | |
766 | break; | |
767 | case RAW_OPTION: | |
768 | tt_flags |= TT_FL_RAW; | |
769 | break; | |
7ae8b469 SK |
770 | case BYTES_OPTION: |
771 | bytes = 1; | |
772 | break; | |
63cccae4 | 773 | case 'V': /* version */ |
d9f07b10 KZ |
774 | printf(UTIL_LINUX_VERSION); |
775 | return EXIT_SUCCESS; | |
63cccae4 KZ |
776 | case 0: |
777 | break; | |
778 | case '?': | |
779 | default: | |
8b0d5341 | 780 | usage(stderr); |
63cccae4 KZ |
781 | } |
782 | } | |
783 | argv += optind; | |
784 | ||
d96b743f | 785 | if (show || (!all && !numof_labels() && !numof_uuids() && *argv == NULL)) { |
e076b552 SK |
786 | if (!ncolumns) { |
787 | /* default columns */ | |
788 | columns[ncolumns++] = COL_PATH; | |
789 | columns[ncolumns++] = COL_TYPE; | |
790 | columns[ncolumns++] = COL_SIZE; | |
791 | columns[ncolumns++] = COL_USED; | |
792 | columns[ncolumns++] = COL_PRIO; | |
793 | } | |
7ae8b469 | 794 | status = show_table(tt_flags, bytes); |
e076b552 SK |
795 | return status; |
796 | } | |
797 | ||
d9f07b10 | 798 | if (ifexists && !all) |
8b0d5341 | 799 | usage(stderr); |
95f1bdee | 800 | |
756bfd01 KZ |
801 | if (all) |
802 | status |= swapon_all(); | |
63cccae4 | 803 | |
0b0c231f KZ |
804 | for (i = 0; i < numof_labels(); i++) |
805 | status |= swapon_by_label(get_label(i), priority, discard); | |
63cccae4 | 806 | |
0b0c231f KZ |
807 | for (i = 0; i < numof_uuids(); i++) |
808 | status |= swapon_by_uuid(get_uuid(i), priority, discard); | |
63cccae4 KZ |
809 | |
810 | while (*argv != NULL) | |
c2301380 | 811 | status |= do_swapon(*argv++, priority, discard, !CANONIC); |
63cccae4 | 812 | |
0b0c231f | 813 | free_tables(); |
64b58881 | 814 | mnt_free_cache(mntcache); |
d9f07b10 | 815 | |
64b58881 | 816 | return status; |
6dbe3af9 | 817 | } |