aboutsummaryrefslogtreecommitdiff
path: root/e2fsprogs/old_e2fsprogs/tune2fs.c
diff options
context:
space:
mode:
Diffstat (limited to 'e2fsprogs/old_e2fsprogs/tune2fs.c')
-rw-r--r--e2fsprogs/old_e2fsprogs/tune2fs.c710
1 files changed, 0 insertions, 710 deletions
diff --git a/e2fsprogs/old_e2fsprogs/tune2fs.c b/e2fsprogs/old_e2fsprogs/tune2fs.c
deleted file mode 100644
index bbe30e5a0..000000000
--- a/e2fsprogs/old_e2fsprogs/tune2fs.c
+++ /dev/null
@@ -1,710 +0,0 @@
1/* vi: set sw=4 ts=4: */
2/*
3 * tune2fs.c - Change the file system parameters on an ext2 file system
4 *
5 * Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
6 * Laboratoire MASI, Institut Blaise Pascal
7 * Universite Pierre et Marie Curie (Paris VI)
8 *
9 * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
10 *
11 * Licensed under GPLv2, see file LICENSE in this source tree.
12 */
13
14/*
15 * History:
16 * 93/06/01 - Creation
17 * 93/10/31 - Added the -c option to change the maximal mount counts
18 * 93/12/14 - Added -l flag to list contents of superblock
19 * M.J.E. Mol (marcel@duteca.et.tudelft.nl)
20 * F.W. ten Wolde (franky@duteca.et.tudelft.nl)
21 * 93/12/29 - Added the -e option to change errors behavior
22 * 94/02/27 - Ported to use the ext2fs library
23 * 94/03/06 - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
24 */
25
26#include <sys/types.h>
27#include <fcntl.h>
28#include <stdio.h>
29#include <stdlib.h>
30#include <string.h>
31#include <time.h>
32#include <unistd.h>
33#include <getopt.h>
34
35#include "e2fsbb.h"
36#include "ext2fs/ext2_fs.h"
37#include "ext2fs/ext2fs.h"
38#include "uuid/uuid.h"
39#include "e2p/e2p.h"
40#include "ext2fs/kernel-jbd.h"
41#include "util.h"
42#include "blkid/blkid.h"
43
44#include "libbb.h"
45
46static char * device_name = NULL;
47static char * new_label, *new_last_mounted, *new_UUID;
48static char * io_options;
49static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
50static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
51static time_t last_check_time;
52static int print_label;
53static int max_mount_count, mount_count, mount_flags;
54static unsigned long interval, reserved_blocks;
55static unsigned reserved_ratio;
56static unsigned long resgid, resuid;
57static unsigned short errors;
58static int open_flag;
59static char *features_cmd;
60static char *mntopts_cmd;
61
62static int journal_size, journal_flags;
63static char *journal_device = NULL;
64
65static const char *please_fsck = "Please run e2fsck on the filesystem\n";
66
67static __u32 ok_features[3] = {
68 EXT3_FEATURE_COMPAT_HAS_JOURNAL | EXT2_FEATURE_COMPAT_DIR_INDEX,
69 EXT2_FEATURE_INCOMPAT_FILETYPE,
70 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
71};
72
73/*
74 * Remove an external journal from the filesystem
75 */
76static void remove_journal_device(ext2_filsys fs)
77{
78 char *journal_path;
79 ext2_filsys jfs;
80 char buf[1024];
81 journal_superblock_t *jsb;
82 int i, nr_users;
83 errcode_t retval;
84 int commit_remove_journal = 0;
85 io_manager io_ptr;
86
87 if (f_flag)
88 commit_remove_journal = 1; /* force removal even if error */
89
90 uuid_unparse(fs->super->s_journal_uuid, buf);
91 journal_path = blkid_get_devname(NULL, "UUID", buf);
92
93 if (!journal_path) {
94 journal_path =
95 ext2fs_find_block_device(fs->super->s_journal_dev);
96 if (!journal_path)
97 return;
98 }
99
100 io_ptr = unix_io_manager;
101 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
102 EXT2_FLAG_JOURNAL_DEV_OK, 0,
103 fs->blocksize, io_ptr, &jfs);
104 if (retval) {
105 bb_error_msg("Failed to open external journal");
106 goto no_valid_journal;
107 }
108 if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
109 bb_error_msg("%s is not a journal device", journal_path);
110 goto no_valid_journal;
111 }
112
113 /* Get the journal superblock */
114 if ((retval = io_channel_read_blk(jfs->io, 1, -1024, buf))) {
115 bb_error_msg("Failed to read journal superblock");
116 goto no_valid_journal;
117 }
118
119 jsb = (journal_superblock_t *) buf;
120 if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
121 (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
122 bb_error_msg("Journal superblock not found!");
123 goto no_valid_journal;
124 }
125
126 /* Find the filesystem UUID */
127 nr_users = ntohl(jsb->s_nr_users);
128 for (i=0; i < nr_users; i++) {
129 if (memcmp(fs->super->s_uuid,
130 &jsb->s_users[i*16], 16) == 0)
131 break;
132 }
133 if (i >= nr_users) {
134 bb_error_msg("Filesystem's UUID not found on journal device");
135 commit_remove_journal = 1;
136 goto no_valid_journal;
137 }
138 nr_users--;
139 for (i=0; i < nr_users; i++)
140 memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
141 jsb->s_nr_users = htonl(nr_users);
142
143 /* Write back the journal superblock */
144 if ((retval = io_channel_write_blk(jfs->io, 1, -1024, buf))) {
145 bb_error_msg("Failed to write journal superblock");
146 goto no_valid_journal;
147 }
148
149 commit_remove_journal = 1;
150
151no_valid_journal:
152 if (commit_remove_journal == 0)
153 bb_error_msg_and_die("Journal NOT removed");
154 fs->super->s_journal_dev = 0;
155 uuid_clear(fs->super->s_journal_uuid);
156 ext2fs_mark_super_dirty(fs);
157 puts("Journal removed");
158 free(journal_path);
159}
160
161/* Helper function for remove_journal_inode */
162static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
163 int blockcnt EXT2FS_ATTR((unused)),
164 void *private EXT2FS_ATTR((unused)))
165{
166 blk_t block;
167 int group;
168
169 block = *blocknr;
170 ext2fs_unmark_block_bitmap(fs->block_map,block);
171 group = ext2fs_group_of_blk(fs, block);
172 fs->group_desc[group].bg_free_blocks_count++;
173 fs->super->s_free_blocks_count++;
174 return 0;
175}
176
177/*
178 * Remove the journal inode from the filesystem
179 */
180static void remove_journal_inode(ext2_filsys fs)
181{
182 struct ext2_inode inode;
183 errcode_t retval;
184 ino_t ino = fs->super->s_journal_inum;
185 char *msg = "to read";
186 char *s = "journal inode";
187
188 retval = ext2fs_read_inode(fs, ino, &inode);
189 if (retval)
190 goto REMOVE_JOURNAL_INODE_ERROR;
191 if (ino == EXT2_JOURNAL_INO) {
192 retval = ext2fs_read_bitmaps(fs);
193 if (retval) {
194 msg = "to read bitmaps";
195 s = "";
196 goto REMOVE_JOURNAL_INODE_ERROR;
197 }
198 retval = ext2fs_block_iterate(fs, ino, 0, NULL,
199 release_blocks_proc, NULL);
200 if (retval) {
201 msg = "clearing";
202 goto REMOVE_JOURNAL_INODE_ERROR;
203 }
204 memset(&inode, 0, sizeof(inode));
205 ext2fs_mark_bb_dirty(fs);
206 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
207 } else
208 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
209 retval = ext2fs_write_inode(fs, ino, &inode);
210 if (retval) {
211 msg = "writing";
212REMOVE_JOURNAL_INODE_ERROR:
213 bb_error_msg_and_die("Failed %s %s", msg, s);
214 }
215 fs->super->s_journal_inum = 0;
216 ext2fs_mark_super_dirty(fs);
217}
218
219/*
220 * Update the default mount options
221 */
222static void update_mntopts(ext2_filsys fs, char *mntopts)
223{
224 struct ext2_super_block *sb= fs->super;
225
226 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0))
227 bb_error_msg_and_die("Invalid mount option set: %s", mntopts);
228 ext2fs_mark_super_dirty(fs);
229}
230
231/*
232 * Update the feature set as provided by the user.
233 */
234static void update_feature_set(ext2_filsys fs, char *features)
235{
236 int sparse, old_sparse, filetype, old_filetype;
237 int journal, old_journal, dxdir, old_dxdir;
238 struct ext2_super_block *sb= fs->super;
239 __u32 old_compat, old_incompat, old_ro_compat;
240
241 old_compat = sb->s_feature_compat;
242 old_ro_compat = sb->s_feature_ro_compat;
243 old_incompat = sb->s_feature_incompat;
244
245 old_sparse = sb->s_feature_ro_compat &
246 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
247 old_filetype = sb->s_feature_incompat &
248 EXT2_FEATURE_INCOMPAT_FILETYPE;
249 old_journal = sb->s_feature_compat &
250 EXT3_FEATURE_COMPAT_HAS_JOURNAL;
251 old_dxdir = sb->s_feature_compat &
252 EXT2_FEATURE_COMPAT_DIR_INDEX;
253 if (e2p_edit_feature(features, &sb->s_feature_compat, ok_features))
254 bb_error_msg_and_die("Invalid filesystem option set: %s", features);
255 sparse = sb->s_feature_ro_compat &
256 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
257 filetype = sb->s_feature_incompat &
258 EXT2_FEATURE_INCOMPAT_FILETYPE;
259 journal = sb->s_feature_compat &
260 EXT3_FEATURE_COMPAT_HAS_JOURNAL;
261 dxdir = sb->s_feature_compat &
262 EXT2_FEATURE_COMPAT_DIR_INDEX;
263 if (old_journal && !journal) {
264 if ((mount_flags & EXT2_MF_MOUNTED) &&
265 !(mount_flags & EXT2_MF_READONLY)) {
266 bb_error_msg_and_die(
267 "The has_journal flag may only be "
268 "cleared when the filesystem is\n"
269 "unmounted or mounted "
270 "read-only");
271 }
272 if (sb->s_feature_incompat &
273 EXT3_FEATURE_INCOMPAT_RECOVER) {
274 bb_error_msg_and_die(
275 "The needs_recovery flag is set. "
276 "%s before clearing the has_journal flag.",
277 please_fsck);
278 }
279 if (sb->s_journal_inum) {
280 remove_journal_inode(fs);
281 }
282 if (sb->s_journal_dev) {
283 remove_journal_device(fs);
284 }
285 }
286 if (journal && !old_journal) {
287 /*
288 * If adding a journal flag, let the create journal
289 * code below handle creating setting the flag and
290 * creating the journal. We supply a default size if
291 * necessary.
292 */
293 if (!journal_size)
294 journal_size = -1;
295 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
296 }
297 if (dxdir && !old_dxdir) {
298 if (!sb->s_def_hash_version)
299 sb->s_def_hash_version = EXT2_HASH_TEA;
300 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
301 uuid_generate((unsigned char *) sb->s_hash_seed);
302 }
303
304 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
305 (sb->s_feature_compat || sb->s_feature_ro_compat ||
306 sb->s_feature_incompat))
307 ext2fs_update_dynamic_rev(fs);
308 if ((sparse != old_sparse) ||
309 (filetype != old_filetype)) {
310 sb->s_state &= ~EXT2_VALID_FS;
311 printf("\n%s\n", please_fsck);
312 }
313 if ((old_compat != sb->s_feature_compat) ||
314 (old_ro_compat != sb->s_feature_ro_compat) ||
315 (old_incompat != sb->s_feature_incompat))
316 ext2fs_mark_super_dirty(fs);
317}
318
319/*
320 * Add a journal to the filesystem.
321 */
322static void add_journal(ext2_filsys fs)
323{
324 if (fs->super->s_feature_compat &
325 EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
326 bb_error_msg_and_die("The filesystem already has a journal");
327 }
328 if (journal_device) {
329 make_journal_device(journal_device, fs, 0, 0);
330 } else if (journal_size) {
331 make_journal_blocks(fs, journal_size, journal_flags, 0);
332 /*
333 * If the filesystem wasn't mounted, we need to force
334 * the block group descriptors out.
335 */
336 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
337 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
338 }
339 print_check_message(fs);
340}
341
342/*
343 * Busybox stuff
344 */
345static char * x_blkid_get_devname(const char *token)
346{
347 char * dev_name;
348
349 if (!(dev_name = blkid_get_devname(NULL, token, NULL)))
350 bb_error_msg_and_die("Unable to resolve '%s'", token);
351 return dev_name;
352}
353
354#ifdef CONFIG_E2LABEL
355static void parse_e2label_options(int argc, char ** argv)
356{
357 if ((argc < 2) || (argc > 3))
358 bb_show_usage();
359 io_options = strchr(argv[1], '?');
360 if (io_options)
361 *io_options++ = 0;
362 device_name = x_blkid_get_devname(argv[1]);
363 if (argc == 3) {
364 open_flag = EXT2_FLAG_RW | EXT2_FLAG_JOURNAL_DEV_OK;
365 L_flag = 1;
366 new_label = argv[2];
367 } else
368 print_label++;
369}
370#else
371#define parse_e2label_options(x,y)
372#endif
373
374static time_t parse_time(char *str)
375{
376 struct tm ts;
377
378 if (strcmp(str, "now") == 0) {
379 return time(0);
380 }
381 memset(&ts, 0, sizeof(ts));
382#ifdef HAVE_STRPTIME
383 strptime(str, "%Y%m%d%H%M%S", &ts);
384#else
385 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
386 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
387 ts.tm_year -= 1900;
388 ts.tm_mon -= 1;
389 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
390 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
391 ts.tm_min > 59 || ts.tm_sec > 61)
392 ts.tm_mday = 0;
393#endif
394 if (ts.tm_mday == 0) {
395 bb_error_msg_and_die("can't parse date/time specifier: %s", str);
396 }
397 return mktime(&ts);
398}
399
400static void parse_tune2fs_options(int argc, char **argv)
401{
402 int c;
403 char * tmp;
404
405 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
406 while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:J:L:M:O:T:U:")) != EOF)
407 switch (c)
408 {
409 case 'c':
410 max_mount_count = xatou_range(optarg, 0, 16000);
411 if (max_mount_count == 0)
412 max_mount_count = -1;
413 c_flag = 1;
414 open_flag = EXT2_FLAG_RW;
415 break;
416 case 'C':
417 mount_count = xatou_range(optarg, 0, 16000);
418 C_flag = 1;
419 open_flag = EXT2_FLAG_RW;
420 break;
421 case 'e':
422 if (strcmp (optarg, "continue") == 0)
423 errors = EXT2_ERRORS_CONTINUE;
424 else if (strcmp (optarg, "remount-ro") == 0)
425 errors = EXT2_ERRORS_RO;
426 else if (strcmp (optarg, "panic") == 0)
427 errors = EXT2_ERRORS_PANIC;
428 else {
429 bb_error_msg_and_die("bad error behavior - %s", optarg);
430 }
431 e_flag = 1;
432 open_flag = EXT2_FLAG_RW;
433 break;
434 case 'f': /* Force */
435 f_flag = 1;
436 break;
437 case 'g':
438 resgid = bb_strtoul(optarg, NULL, 10);
439 if (errno)
440 resgid = xgroup2gid(optarg);
441 g_flag = 1;
442 open_flag = EXT2_FLAG_RW;
443 break;
444 case 'i':
445 interval = strtoul(optarg, &tmp, 0);
446 switch (*tmp) {
447 case 's':
448 tmp++;
449 break;
450 case '\0':
451 case 'd':
452 case 'D': /* days */
453 interval *= 86400;
454 if (*tmp != '\0')
455 tmp++;
456 break;
457 case 'm':
458 case 'M': /* months! */
459 interval *= 86400 * 30;
460 tmp++;
461 break;
462 case 'w':
463 case 'W': /* weeks */
464 interval *= 86400 * 7;
465 tmp++;
466 break;
467 }
468 if (*tmp || interval > (365 * 86400)) {
469 bb_error_msg_and_die("bad interval - %s", optarg);
470 }
471 i_flag = 1;
472 open_flag = EXT2_FLAG_RW;
473 break;
474 case 'j':
475 if (!journal_size)
476 journal_size = -1;
477 open_flag = EXT2_FLAG_RW;
478 break;
479 case 'J':
480 parse_journal_opts(&journal_device, &journal_flags, &journal_size, optarg);
481 open_flag = EXT2_FLAG_RW;
482 break;
483 case 'l':
484 l_flag = 1;
485 break;
486 case 'L':
487 new_label = optarg;
488 L_flag = 1;
489 open_flag = EXT2_FLAG_RW |
490 EXT2_FLAG_JOURNAL_DEV_OK;
491 break;
492 case 'm':
493 reserved_ratio = xatou_range(optarg, 0, 50);
494 m_flag = 1;
495 open_flag = EXT2_FLAG_RW;
496 break;
497 case 'M':
498 new_last_mounted = optarg;
499 M_flag = 1;
500 open_flag = EXT2_FLAG_RW;
501 break;
502 case 'o':
503 if (mntopts_cmd) {
504 bb_error_msg_and_die("-o may only be specified once");
505 }
506 mntopts_cmd = optarg;
507 open_flag = EXT2_FLAG_RW;
508 break;
509
510 case 'O':
511 if (features_cmd) {
512 bb_error_msg_and_die("-O may only be specified once");
513 }
514 features_cmd = optarg;
515 open_flag = EXT2_FLAG_RW;
516 break;
517 case 'r':
518 reserved_blocks = xatoul(optarg);
519 r_flag = 1;
520 open_flag = EXT2_FLAG_RW;
521 break;
522 case 's':
523 s_flag = atoi(optarg);
524 open_flag = EXT2_FLAG_RW;
525 break;
526 case 'T':
527 T_flag = 1;
528 last_check_time = parse_time(optarg);
529 open_flag = EXT2_FLAG_RW;
530 break;
531 case 'u':
532 resuid = bb_strtoul(optarg, NULL, 10);
533 if (errno)
534 resuid = xuname2uid(optarg);
535 u_flag = 1;
536 open_flag = EXT2_FLAG_RW;
537 break;
538 case 'U':
539 new_UUID = optarg;
540 U_flag = 1;
541 open_flag = EXT2_FLAG_RW |
542 EXT2_FLAG_JOURNAL_DEV_OK;
543 break;
544 default:
545 bb_show_usage();
546 }
547 if (optind < argc - 1 || optind == argc)
548 bb_show_usage();
549 if (!open_flag && !l_flag)
550 bb_show_usage();
551 io_options = strchr(argv[optind], '?');
552 if (io_options)
553 *io_options++ = 0;
554 device_name = x_blkid_get_devname(argv[optind]);
555}
556
557static void tune2fs_clean_up(void)
558{
559 if (ENABLE_FEATURE_CLEAN_UP && device_name) free(device_name);
560 if (ENABLE_FEATURE_CLEAN_UP && journal_device) free(journal_device);
561}
562
563int tune2fs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
564int tune2fs_main(int argc, char **argv)
565{
566 errcode_t retval;
567 ext2_filsys fs;
568 struct ext2_super_block *sb;
569 io_manager io_ptr;
570
571 if (ENABLE_FEATURE_CLEAN_UP)
572 atexit(tune2fs_clean_up);
573
574 if (ENABLE_E2LABEL && (applet_name[0] == 'e')) /* e2label */
575 parse_e2label_options(argc, argv);
576 else
577 parse_tune2fs_options(argc, argv); /* tune2fs */
578
579 io_ptr = unix_io_manager;
580 retval = ext2fs_open2(device_name, io_options, open_flag,
581 0, 0, io_ptr, &fs);
582 if (retval)
583 bb_error_msg_and_die("No valid superblock on %s", device_name);
584 sb = fs->super;
585 if (print_label) {
586 /* For e2label emulation */
587 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
588 sb->s_volume_name);
589 return 0;
590 }
591 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
592 if (retval)
593 bb_error_msg_and_die("can't determine if %s is mounted", device_name);
594 /* Normally we only need to write out the superblock */
595 fs->flags |= EXT2_FLAG_SUPER_ONLY;
596
597 if (c_flag) {
598 sb->s_max_mnt_count = max_mount_count;
599 ext2fs_mark_super_dirty(fs);
600 printf("Setting maximal mount count to %d\n", max_mount_count);
601 }
602 if (C_flag) {
603 sb->s_mnt_count = mount_count;
604 ext2fs_mark_super_dirty(fs);
605 printf("Setting current mount count to %d\n", mount_count);
606 }
607 if (e_flag) {
608 sb->s_errors = errors;
609 ext2fs_mark_super_dirty(fs);
610 printf("Setting error behavior to %u\n", errors);
611 }
612 if (g_flag) {
613 sb->s_def_resgid = resgid;
614 ext2fs_mark_super_dirty(fs);
615 printf("Setting reserved blocks gid to %lu\n", resgid);
616 }
617 if (i_flag) {
618 sb->s_checkinterval = interval;
619 ext2fs_mark_super_dirty(fs);
620 printf("Setting interval between check %lu seconds\n", interval);
621 }
622 if (m_flag) {
623 sb->s_r_blocks_count = (sb->s_blocks_count / 100)
624 * reserved_ratio;
625 ext2fs_mark_super_dirty(fs);
626 printf("Setting reserved blocks percentage to %u (%u blocks)\n",
627 reserved_ratio, sb->s_r_blocks_count);
628 }
629 if (r_flag) {
630 if (reserved_blocks >= sb->s_blocks_count/2)
631 bb_error_msg_and_die("reserved blocks count is too big (%lu)", reserved_blocks);
632 sb->s_r_blocks_count = reserved_blocks;
633 ext2fs_mark_super_dirty(fs);
634 printf("Setting reserved blocks count to %lu\n", reserved_blocks);
635 }
636 if (s_flag == 1) {
637 if (sb->s_feature_ro_compat &
638 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
639 bb_error_msg("\nThe filesystem already has sparse superblocks");
640 else {
641 sb->s_feature_ro_compat |=
642 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
643 sb->s_state &= ~EXT2_VALID_FS;
644 ext2fs_mark_super_dirty(fs);
645 printf("\nSparse superblock flag set. %s", please_fsck);
646 }
647 }
648 if (s_flag == 0) {
649 if (!(sb->s_feature_ro_compat &
650 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER))
651 bb_error_msg("\nThe filesystem already has sparse superblocks disabled");
652 else {
653 sb->s_feature_ro_compat &=
654 ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
655 sb->s_state &= ~EXT2_VALID_FS;
656 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
657 ext2fs_mark_super_dirty(fs);
658 printf("\nSparse superblock flag cleared. %s", please_fsck);
659 }
660 }
661 if (T_flag) {
662 sb->s_lastcheck = last_check_time;
663 ext2fs_mark_super_dirty(fs);
664 printf("Setting time filesystem last checked to %s\n",
665 ctime(&last_check_time));
666 }
667 if (u_flag) {
668 sb->s_def_resuid = resuid;
669 ext2fs_mark_super_dirty(fs);
670 printf("Setting reserved blocks uid to %lu\n", resuid);
671 }
672 if (L_flag) {
673 if (strlen(new_label) > sizeof(sb->s_volume_name))
674 bb_error_msg("Warning: label too long, truncating");
675 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
676 safe_strncpy(sb->s_volume_name, new_label,
677 sizeof(sb->s_volume_name));
678 ext2fs_mark_super_dirty(fs);
679 }
680 if (M_flag) {
681 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
682 safe_strncpy(sb->s_last_mounted, new_last_mounted,
683 sizeof(sb->s_last_mounted));
684 ext2fs_mark_super_dirty(fs);
685 }
686 if (mntopts_cmd)
687 update_mntopts(fs, mntopts_cmd);
688 if (features_cmd)
689 update_feature_set(fs, features_cmd);
690 if (journal_size || journal_device)
691 add_journal(fs);
692
693 if (U_flag) {
694 if ((strcasecmp(new_UUID, "null") == 0) ||
695 (strcasecmp(new_UUID, "clear") == 0)) {
696 uuid_clear(sb->s_uuid);
697 } else if (strcasecmp(new_UUID, "time") == 0) {
698 uuid_generate_time(sb->s_uuid);
699 } else if (strcasecmp(new_UUID, "random") == 0) {
700 uuid_generate(sb->s_uuid);
701 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
702 bb_error_msg_and_die("Invalid UUID format");
703 }
704 ext2fs_mark_super_dirty(fs);
705 }
706
707 if (l_flag)
708 list_super (sb);
709 return (ext2fs_close (fs) ? 1 : 0);
710}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-08-15 22:14:24 +0000