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[thirdparty/e2fsprogs.git] / misc / tune2fs.c
1 /*
2 * tune2fs.c - Change the file system parameters on an ext2 file system
3 *
4 * Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
5 * Laboratoire MASI, Institut Blaise Pascal
6 * Universite Pierre et Marie Curie (Paris VI)
7 *
8 * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
9 *
10 * %Begin-Header%
11 * This file may be redistributed under the terms of the GNU Public
12 * License.
13 * %End-Header%
14 */
15
16 /*
17 * History:
18 * 93/06/01 - Creation
19 * 93/10/31 - Added the -c option to change the maximal mount counts
20 * 93/12/14 - Added -l flag to list contents of superblock
21 * M.J.E. Mol (marcel@duteca.et.tudelft.nl)
22 * F.W. ten Wolde (franky@duteca.et.tudelft.nl)
23 * 93/12/29 - Added the -e option to change errors behavior
24 * 94/02/27 - Ported to use the ext2fs library
25 * 94/03/06 - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
26 */
27
28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
29 #define _BSD_SOURCE /* for inclusion of strcasecmp() */
30 #include <fcntl.h>
31 #include <grp.h>
32 #ifdef HAVE_GETOPT_H
33 #include <getopt.h>
34 #else
35 extern char *optarg;
36 extern int optind;
37 #endif
38 #include <pwd.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <time.h>
43 #include <unistd.h>
44 #include <sys/types.h>
45 #include <libgen.h>
46 #include <limits.h>
47
48 #include "ext2fs/ext2_fs.h"
49 #include "ext2fs/ext2fs.h"
50 #include "et/com_err.h"
51 #include "uuid/uuid.h"
52 #include "e2p/e2p.h"
53 #include "jfs_user.h"
54 #include "util.h"
55 #include "blkid/blkid.h"
56
57 #include "../version.h"
58 #include "nls-enable.h"
59
60 const char * program_name = "tune2fs";
61 char * device_name;
62 char * new_label, *new_last_mounted, *new_UUID;
63 char * io_options;
64 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
65 static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
66 static int I_flag;
67 static time_t last_check_time;
68 static int print_label;
69 static int max_mount_count, mount_count, mount_flags;
70 static unsigned long interval, reserved_blocks;
71 static double reserved_ratio;
72 static unsigned long resgid, resuid;
73 static unsigned short errors;
74 static int open_flag;
75 static char *features_cmd;
76 static char *mntopts_cmd;
77 static int stride, stripe_width;
78 static int stride_set, stripe_width_set;
79 static char *extended_cmd;
80 static unsigned long new_inode_size;
81
82 int journal_size, journal_flags;
83 char *journal_device;
84
85 static struct list_head blk_move_list;
86
87 struct blk_move {
88 struct list_head list;
89 blk_t old_loc;
90 blk_t new_loc;
91 };
92
93
94 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
95
96 void do_findfs(int argc, char **argv);
97
98 static void usage(void)
99 {
100 fprintf(stderr,
101 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
102 "[-g group]\n"
103 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
104 "\t[-m reserved_blocks_percent] "
105 "[-o [^]mount_options[,...]] \n"
106 "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
107 "[-L volume_label]\n"
108 "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
109 "\t[-E extended-option[,...]] [-T last_check_time] "
110 "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
111 exit (1);
112 }
113
114 static __u32 ok_features[3] = {
115 /* Compat */
116 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
117 EXT2_FEATURE_COMPAT_DIR_INDEX,
118 /* Incompat */
119 EXT2_FEATURE_INCOMPAT_FILETYPE |
120 EXT3_FEATURE_INCOMPAT_EXTENTS |
121 EXT4_FEATURE_INCOMPAT_FLEX_BG,
122 /* R/O compat */
123 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
124 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
125 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
126 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
127 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
128 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
129 };
130
131 static __u32 clear_ok_features[3] = {
132 /* Compat */
133 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
134 EXT2_FEATURE_COMPAT_RESIZE_INODE |
135 EXT2_FEATURE_COMPAT_DIR_INDEX,
136 /* Incompat */
137 EXT2_FEATURE_INCOMPAT_FILETYPE |
138 EXT4_FEATURE_INCOMPAT_FLEX_BG,
139 /* R/O compat */
140 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
141 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
142 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
143 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
144 EXT4_FEATURE_RO_COMPAT_GDT_CSUM
145 };
146
147 /*
148 * Remove an external journal from the filesystem
149 */
150 static void remove_journal_device(ext2_filsys fs)
151 {
152 char *journal_path;
153 ext2_filsys jfs;
154 char buf[1024];
155 journal_superblock_t *jsb;
156 int i, nr_users;
157 errcode_t retval;
158 int commit_remove_journal = 0;
159 io_manager io_ptr;
160
161 if (f_flag)
162 commit_remove_journal = 1; /* force removal even if error */
163
164 uuid_unparse(fs->super->s_journal_uuid, buf);
165 journal_path = blkid_get_devname(NULL, "UUID", buf);
166
167 if (!journal_path) {
168 journal_path =
169 ext2fs_find_block_device(fs->super->s_journal_dev);
170 if (!journal_path)
171 return;
172 }
173
174 #ifdef CONFIG_TESTIO_DEBUG
175 io_ptr = test_io_manager;
176 test_io_backing_manager = unix_io_manager;
177 #else
178 io_ptr = unix_io_manager;
179 #endif
180 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
181 EXT2_FLAG_JOURNAL_DEV_OK, 0,
182 fs->blocksize, io_ptr, &jfs);
183 if (retval) {
184 com_err(program_name, retval,
185 _("while trying to open external journal"));
186 goto no_valid_journal;
187 }
188 if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
189 fprintf(stderr, _("%s is not a journal device.\n"),
190 journal_path);
191 goto no_valid_journal;
192 }
193
194 /* Get the journal superblock */
195 if ((retval = io_channel_read_blk(jfs->io, 1, -1024, buf))) {
196 com_err(program_name, retval,
197 _("while reading journal superblock"));
198 goto no_valid_journal;
199 }
200
201 jsb = (journal_superblock_t *) buf;
202 if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
203 (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
204 fputs(_("Journal superblock not found!\n"), stderr);
205 goto no_valid_journal;
206 }
207
208 /* Find the filesystem UUID */
209 nr_users = ntohl(jsb->s_nr_users);
210 for (i=0; i < nr_users; i++) {
211 if (memcmp(fs->super->s_uuid,
212 &jsb->s_users[i*16], 16) == 0)
213 break;
214 }
215 if (i >= nr_users) {
216 fputs(_("Filesystem's UUID not found on journal device.\n"),
217 stderr);
218 commit_remove_journal = 1;
219 goto no_valid_journal;
220 }
221 nr_users--;
222 for (i=0; i < nr_users; i++)
223 memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
224 jsb->s_nr_users = htonl(nr_users);
225
226 /* Write back the journal superblock */
227 if ((retval = io_channel_write_blk(jfs->io, 1, -1024, buf))) {
228 com_err(program_name, retval,
229 "while writing journal superblock.");
230 goto no_valid_journal;
231 }
232
233 commit_remove_journal = 1;
234
235 no_valid_journal:
236 if (commit_remove_journal == 0) {
237 fputs(_("Journal NOT removed\n"), stderr);
238 exit(1);
239 }
240 fs->super->s_journal_dev = 0;
241 uuid_clear(fs->super->s_journal_uuid);
242 ext2fs_mark_super_dirty(fs);
243 fputs(_("Journal removed\n"), stdout);
244 free(journal_path);
245 }
246
247 /* Helper function for remove_journal_inode */
248 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
249 int blockcnt EXT2FS_ATTR((unused)),
250 void *private EXT2FS_ATTR((unused)))
251 {
252 blk_t block;
253 int group;
254
255 block = *blocknr;
256 ext2fs_unmark_block_bitmap(fs->block_map,block);
257 group = ext2fs_group_of_blk(fs, block);
258 fs->group_desc[group].bg_free_blocks_count++;
259 ext2fs_group_desc_csum_set(fs, group);
260 fs->super->s_free_blocks_count++;
261 return 0;
262 }
263
264 /*
265 * Remove the journal inode from the filesystem
266 */
267 static void remove_journal_inode(ext2_filsys fs)
268 {
269 struct ext2_inode inode;
270 errcode_t retval;
271 ino_t ino = fs->super->s_journal_inum;
272
273 retval = ext2fs_read_inode(fs, ino, &inode);
274 if (retval) {
275 com_err(program_name, retval,
276 _("while reading journal inode"));
277 exit(1);
278 }
279 if (ino == EXT2_JOURNAL_INO) {
280 retval = ext2fs_read_bitmaps(fs);
281 if (retval) {
282 com_err(program_name, retval,
283 _("while reading bitmaps"));
284 exit(1);
285 }
286 retval = ext2fs_block_iterate(fs, ino,
287 BLOCK_FLAG_READ_ONLY, NULL,
288 release_blocks_proc, NULL);
289 if (retval) {
290 com_err(program_name, retval,
291 _("while clearing journal inode"));
292 exit(1);
293 }
294 memset(&inode, 0, sizeof(inode));
295 ext2fs_mark_bb_dirty(fs);
296 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
297 } else
298 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
299 retval = ext2fs_write_inode(fs, ino, &inode);
300 if (retval) {
301 com_err(program_name, retval,
302 _("while writing journal inode"));
303 exit(1);
304 }
305 fs->super->s_journal_inum = 0;
306 ext2fs_mark_super_dirty(fs);
307 }
308
309 /*
310 * Update the default mount options
311 */
312 static void update_mntopts(ext2_filsys fs, char *mntopts)
313 {
314 struct ext2_super_block *sb= fs->super;
315
316 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
317 fprintf(stderr, _("Invalid mount option set: %s\n"),
318 mntopts);
319 exit(1);
320 }
321 ext2fs_mark_super_dirty(fs);
322 }
323
324 /*
325 * Update the feature set as provided by the user.
326 */
327 static void update_feature_set(ext2_filsys fs, char *features)
328 {
329 struct ext2_super_block *sb= fs->super;
330 __u32 old_features[3];
331 int type_err;
332 unsigned int mask_err;
333
334 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
335 ((&sb->s_feature_compat)[(type)] & (mask)))
336 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
337 !((&sb->s_feature_compat)[(type)] & (mask)))
338 #define FEATURE_CHANGED(type, mask) ((mask) & \
339 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
340
341 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
342 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
343 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
344
345 if (e2p_edit_feature2(features, &sb->s_feature_compat,
346 ok_features, clear_ok_features,
347 &type_err, &mask_err)) {
348 if (!mask_err)
349 fprintf(stderr,
350 _("Invalid filesystem option set: %s\n"),
351 features);
352 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
353 fprintf(stderr, _("Clearing filesystem feature '%s' "
354 "not supported.\n"),
355 e2p_feature2string(type_err &
356 E2P_FEATURE_TYPE_MASK,
357 mask_err));
358 else
359 fprintf(stderr, _("Setting filesystem feature '%s' "
360 "not supported.\n"),
361 e2p_feature2string(type_err, mask_err));
362 exit(1);
363 }
364
365 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
366 if ((mount_flags & EXT2_MF_MOUNTED) &&
367 !(mount_flags & EXT2_MF_READONLY)) {
368 fputs(_("The has_journal feature may only be "
369 "cleared when the filesystem is\n"
370 "unmounted or mounted "
371 "read-only.\n"), stderr);
372 exit(1);
373 }
374 if (sb->s_feature_incompat &
375 EXT3_FEATURE_INCOMPAT_RECOVER) {
376 fputs(_("The needs_recovery flag is set. "
377 "Please run e2fsck before clearing\n"
378 "the has_journal flag.\n"), stderr);
379 exit(1);
380 }
381 if (sb->s_journal_inum) {
382 remove_journal_inode(fs);
383 }
384 if (sb->s_journal_dev) {
385 remove_journal_device(fs);
386 }
387 }
388
389 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
390 /*
391 * If adding a journal flag, let the create journal
392 * code below handle setting the flag and creating the
393 * journal. We supply a default size if necessary.
394 */
395 if (!journal_size)
396 journal_size = -1;
397 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
398 }
399
400 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
401 if (!sb->s_def_hash_version)
402 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
403 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
404 uuid_generate((unsigned char *) sb->s_hash_seed);
405 }
406
407 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
408 if (ext2fs_check_desc(fs)) {
409 fputs(_("Clearing the flex_bg flag would "
410 "cause the the filesystem to be\n"
411 "inconsistent.\n"), stderr);
412 exit(1);
413 }
414 }
415
416 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
417 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
418 if ((mount_flags & EXT2_MF_MOUNTED) &&
419 !(mount_flags & EXT2_MF_READONLY)) {
420 fputs(_("The huge_file feature may only be "
421 "cleared when the filesystem is\n"
422 "unmounted or mounted "
423 "read-only.\n"), stderr);
424 exit(1);
425 }
426 }
427
428 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
429 (sb->s_feature_compat || sb->s_feature_ro_compat ||
430 sb->s_feature_incompat))
431 ext2fs_update_dynamic_rev(fs);
432
433 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
434 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
435 FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
436 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) ||
437 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
438 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
439 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
440 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
441 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
442 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
443 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
444 EXT2_FEATURE_RO_COMPAT_LARGE_FILE)) {
445 sb->s_state &= ~EXT2_VALID_FS;
446 printf("\n%s\n", _(please_fsck));
447 if (mount_flags & EXT2_MF_READONLY)
448 printf(_("(and reboot afterwards!)\n"));
449 }
450
451 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
452 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
453 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
454 ext2fs_mark_super_dirty(fs);
455 }
456
457 /*
458 * Add a journal to the filesystem.
459 */
460 static void add_journal(ext2_filsys fs)
461 {
462 unsigned long journal_blocks;
463 errcode_t retval;
464 ext2_filsys jfs;
465 io_manager io_ptr;
466
467 if (fs->super->s_feature_compat &
468 EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
469 fputs(_("The filesystem already has a journal.\n"), stderr);
470 goto err;
471 }
472 if (journal_device) {
473 check_plausibility(journal_device);
474 check_mount(journal_device, 0, _("journal"));
475 #ifdef CONFIG_TESTIO_DEBUG
476 io_ptr = test_io_manager;
477 test_io_backing_manager = unix_io_manager;
478 #else
479 io_ptr = unix_io_manager;
480 #endif
481 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
482 EXT2_FLAG_JOURNAL_DEV_OK, 0,
483 fs->blocksize, io_ptr, &jfs);
484 if (retval) {
485 com_err(program_name, retval,
486 _("\n\twhile trying to open journal on %s\n"),
487 journal_device);
488 goto err;
489 }
490 printf(_("Creating journal on device %s: "),
491 journal_device);
492 fflush(stdout);
493
494 retval = ext2fs_add_journal_device(fs, jfs);
495 ext2fs_close(jfs);
496 if (retval) {
497 com_err (program_name, retval,
498 _("while adding filesystem to journal on %s"),
499 journal_device);
500 goto err;
501 }
502 fputs(_("done\n"), stdout);
503 } else if (journal_size) {
504 fputs(_("Creating journal inode: "), stdout);
505 fflush(stdout);
506 journal_blocks = figure_journal_size(journal_size, fs);
507
508 retval = ext2fs_add_journal_inode(fs, journal_blocks,
509 journal_flags);
510 if (retval) {
511 fprintf(stderr, "\n");
512 com_err(program_name, retval,
513 _("\n\twhile trying to create journal file"));
514 exit(1);
515 } else
516 fputs(_("done\n"), stdout);
517 /*
518 * If the filesystem wasn't mounted, we need to force
519 * the block group descriptors out.
520 */
521 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
522 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
523 }
524 print_check_message(fs);
525 return;
526
527 err:
528 if (journal_device)
529 free(journal_device);
530 exit(1);
531 }
532
533
534 static void parse_e2label_options(int argc, char ** argv)
535 {
536 if ((argc < 2) || (argc > 3)) {
537 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
538 exit(1);
539 }
540 io_options = strchr(argv[1], '?');
541 if (io_options)
542 *io_options++ = 0;
543 device_name = blkid_get_devname(NULL, argv[1], NULL);
544 if (!device_name) {
545 com_err("e2label", 0, _("Unable to resolve '%s'"),
546 argv[1]);
547 exit(1);
548 }
549 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
550 if (argc == 3) {
551 open_flag |= EXT2_FLAG_RW;
552 L_flag = 1;
553 new_label = argv[2];
554 } else
555 print_label++;
556 }
557
558 static time_t parse_time(char *str)
559 {
560 struct tm ts;
561
562 if (strcmp(str, "now") == 0) {
563 return (time(0));
564 }
565 memset(&ts, 0, sizeof(ts));
566 #ifdef HAVE_STRPTIME
567 strptime(str, "%Y%m%d%H%M%S", &ts);
568 #else
569 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
570 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
571 ts.tm_year -= 1900;
572 ts.tm_mon -= 1;
573 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
574 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
575 ts.tm_min > 59 || ts.tm_sec > 61)
576 ts.tm_mday = 0;
577 #endif
578 if (ts.tm_mday == 0) {
579 com_err(program_name, 0,
580 _("Couldn't parse date/time specifier: %s"),
581 str);
582 usage();
583 }
584 ts.tm_isdst = -1;
585 return (mktime(&ts));
586 }
587
588 static void parse_tune2fs_options(int argc, char **argv)
589 {
590 int c;
591 char * tmp;
592 struct group * gr;
593 struct passwd * pw;
594
595 open_flag = 0;
596
597 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
598 while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:")) != EOF)
599 switch (c)
600 {
601 case 'c':
602 max_mount_count = strtol (optarg, &tmp, 0);
603 if (*tmp || max_mount_count > 16000) {
604 com_err (program_name, 0,
605 _("bad mounts count - %s"),
606 optarg);
607 usage();
608 }
609 if (max_mount_count == 0)
610 max_mount_count = -1;
611 c_flag = 1;
612 open_flag = EXT2_FLAG_RW;
613 break;
614 case 'C':
615 mount_count = strtoul (optarg, &tmp, 0);
616 if (*tmp || mount_count > 16000) {
617 com_err (program_name, 0,
618 _("bad mounts count - %s"),
619 optarg);
620 usage();
621 }
622 C_flag = 1;
623 open_flag = EXT2_FLAG_RW;
624 break;
625 case 'e':
626 if (strcmp (optarg, "continue") == 0)
627 errors = EXT2_ERRORS_CONTINUE;
628 else if (strcmp (optarg, "remount-ro") == 0)
629 errors = EXT2_ERRORS_RO;
630 else if (strcmp (optarg, "panic") == 0)
631 errors = EXT2_ERRORS_PANIC;
632 else {
633 com_err (program_name, 0,
634 _("bad error behavior - %s"),
635 optarg);
636 usage();
637 }
638 e_flag = 1;
639 open_flag = EXT2_FLAG_RW;
640 break;
641 case 'E':
642 extended_cmd = optarg;
643 open_flag |= EXT2_FLAG_RW;
644 break;
645 case 'f': /* Force */
646 f_flag = 1;
647 break;
648 case 'g':
649 resgid = strtoul (optarg, &tmp, 0);
650 if (*tmp) {
651 gr = getgrnam (optarg);
652 if (gr == NULL)
653 tmp = optarg;
654 else {
655 resgid = gr->gr_gid;
656 *tmp =0;
657 }
658 }
659 if (*tmp) {
660 com_err (program_name, 0,
661 _("bad gid/group name - %s"),
662 optarg);
663 usage();
664 }
665 g_flag = 1;
666 open_flag = EXT2_FLAG_RW;
667 break;
668 case 'i':
669 interval = strtoul (optarg, &tmp, 0);
670 switch (*tmp) {
671 case 's':
672 tmp++;
673 break;
674 case '\0':
675 case 'd':
676 case 'D': /* days */
677 interval *= 86400;
678 if (*tmp != '\0')
679 tmp++;
680 break;
681 case 'm':
682 case 'M': /* months! */
683 interval *= 86400 * 30;
684 tmp++;
685 break;
686 case 'w':
687 case 'W': /* weeks */
688 interval *= 86400 * 7;
689 tmp++;
690 break;
691 }
692 if (*tmp) {
693 com_err (program_name, 0,
694 _("bad interval - %s"), optarg);
695 usage();
696 }
697 i_flag = 1;
698 open_flag = EXT2_FLAG_RW;
699 break;
700 case 'j':
701 if (!journal_size)
702 journal_size = -1;
703 open_flag = EXT2_FLAG_RW;
704 break;
705 case 'J':
706 parse_journal_opts(optarg);
707 open_flag = EXT2_FLAG_RW;
708 break;
709 case 'l':
710 l_flag = 1;
711 break;
712 case 'L':
713 new_label = optarg;
714 L_flag = 1;
715 open_flag |= EXT2_FLAG_RW |
716 EXT2_FLAG_JOURNAL_DEV_OK;
717 break;
718 case 'm':
719 reserved_ratio = strtod(optarg, &tmp);
720 if (*tmp || reserved_ratio > 50) {
721 com_err (program_name, 0,
722 _("bad reserved block ratio - %s"),
723 optarg);
724 usage();
725 }
726 m_flag = 1;
727 open_flag = EXT2_FLAG_RW;
728 break;
729 case 'M':
730 new_last_mounted = optarg;
731 M_flag = 1;
732 open_flag = EXT2_FLAG_RW;
733 break;
734 case 'o':
735 if (mntopts_cmd) {
736 com_err (program_name, 0,
737 _("-o may only be specified once"));
738 usage();
739 }
740 mntopts_cmd = optarg;
741 open_flag = EXT2_FLAG_RW;
742 break;
743
744 case 'O':
745 if (features_cmd) {
746 com_err (program_name, 0,
747 _("-O may only be specified once"));
748 usage();
749 }
750 features_cmd = optarg;
751 open_flag = EXT2_FLAG_RW;
752 break;
753 case 'r':
754 reserved_blocks = strtoul (optarg, &tmp, 0);
755 if (*tmp) {
756 com_err (program_name, 0,
757 _("bad reserved blocks count - %s"),
758 optarg);
759 usage();
760 }
761 r_flag = 1;
762 open_flag = EXT2_FLAG_RW;
763 break;
764 case 's': /* Deprecated */
765 s_flag = atoi(optarg);
766 open_flag = EXT2_FLAG_RW;
767 break;
768 case 'T':
769 T_flag = 1;
770 last_check_time = parse_time(optarg);
771 open_flag = EXT2_FLAG_RW;
772 break;
773 case 'u':
774 resuid = strtoul (optarg, &tmp, 0);
775 if (*tmp) {
776 pw = getpwnam (optarg);
777 if (pw == NULL)
778 tmp = optarg;
779 else {
780 resuid = pw->pw_uid;
781 *tmp = 0;
782 }
783 }
784 if (*tmp) {
785 com_err (program_name, 0,
786 _("bad uid/user name - %s"),
787 optarg);
788 usage();
789 }
790 u_flag = 1;
791 open_flag = EXT2_FLAG_RW;
792 break;
793 case 'U':
794 new_UUID = optarg;
795 U_flag = 1;
796 open_flag = EXT2_FLAG_RW |
797 EXT2_FLAG_JOURNAL_DEV_OK;
798 break;
799 case 'I':
800 new_inode_size = strtoul (optarg, &tmp, 0);
801 if (*tmp) {
802 com_err (program_name, 0,
803 _("bad inode size - %s"),
804 optarg);
805 usage();
806 }
807 if (!((new_inode_size &
808 (new_inode_size - 1)) == 0)) {
809 com_err (program_name, 0,
810 _("Inode size must be a "
811 "power of two- %s"),
812 optarg);
813 usage();
814 }
815 open_flag = EXT2_FLAG_RW;
816 I_flag = 1;
817 break;
818 default:
819 usage();
820 }
821 if (optind < argc - 1 || optind == argc)
822 usage();
823 if (!open_flag && !l_flag)
824 usage();
825 io_options = strchr(argv[optind], '?');
826 if (io_options)
827 *io_options++ = 0;
828 device_name = blkid_get_devname(NULL, argv[optind], NULL);
829 if (!device_name) {
830 com_err("tune2fs", 0, _("Unable to resolve '%s'"),
831 argv[optind]);
832 exit(1);
833 }
834 }
835
836 void do_findfs(int argc, char **argv)
837 {
838 char *dev;
839
840 if ((argc != 2) ||
841 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
842 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
843 exit(2);
844 }
845 dev = blkid_get_devname(NULL, argv[1], NULL);
846 if (!dev) {
847 com_err("findfs", 0, _("Unable to resolve '%s'"),
848 argv[1]);
849 exit(1);
850 }
851 puts(dev);
852 exit(0);
853 }
854
855 static void parse_extended_opts(ext2_filsys fs, const char *opts)
856 {
857 char *buf, *token, *next, *p, *arg;
858 int len, hash_alg;
859 int r_usage = 0;
860
861 len = strlen(opts);
862 buf = malloc(len+1);
863 if (!buf) {
864 fprintf(stderr,
865 _("Couldn't allocate memory to parse options!\n"));
866 exit(1);
867 }
868 strcpy(buf, opts);
869 for (token = buf; token && *token; token = next) {
870 p = strchr(token, ',');
871 next = 0;
872 if (p) {
873 *p = 0;
874 next = p+1;
875 }
876 arg = strchr(token, '=');
877 if (arg) {
878 *arg = 0;
879 arg++;
880 }
881 if (!strcmp(token, "test_fs")) {
882 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
883 printf("Setting test filesystem flag\n");
884 ext2fs_mark_super_dirty(fs);
885 } else if (!strcmp(token, "^test_fs")) {
886 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
887 printf("Clearing test filesystem flag\n");
888 ext2fs_mark_super_dirty(fs);
889 } else if (strcmp(token, "stride") == 0) {
890 if (!arg) {
891 r_usage++;
892 continue;
893 }
894 stride = strtoul(arg, &p, 0);
895 if (*p || (stride == 0)) {
896 fprintf(stderr,
897 _("Invalid RAID stride: %s\n"),
898 arg);
899 r_usage++;
900 continue;
901 }
902 stride_set = 1;
903 } else if (strcmp(token, "stripe-width") == 0 ||
904 strcmp(token, "stripe_width") == 0) {
905 if (!arg) {
906 r_usage++;
907 continue;
908 }
909 stripe_width = strtoul(arg, &p, 0);
910 if (*p || (stripe_width == 0)) {
911 fprintf(stderr,
912 _("Invalid RAID stripe-width: %s\n"),
913 arg);
914 r_usage++;
915 continue;
916 }
917 stripe_width_set = 1;
918 } else if (strcmp(token, "hash_alg") == 0 ||
919 strcmp(token, "hash-alg") == 0) {
920 if (!arg) {
921 r_usage++;
922 continue;
923 }
924 hash_alg = e2p_string2hash(arg);
925 if (hash_alg < 0) {
926 fprintf(stderr,
927 _("Invalid hash algorithm: %s\n"),
928 arg);
929 r_usage++;
930 continue;
931 }
932 fs->super->s_def_hash_version = hash_alg;
933 printf(_("Setting default hash algorithm "
934 "to %s (%d)\n"),
935 arg, hash_alg);
936 ext2fs_mark_super_dirty(fs);
937 } else
938 r_usage++;
939 }
940 if (r_usage) {
941 fprintf(stderr, _("\nBad options specified.\n\n"
942 "Extended options are separated by commas, "
943 "and may take an argument which\n"
944 "\tis set off by an equals ('=') sign.\n\n"
945 "Valid extended options are:\n"
946 "\tstride=<RAID per-disk chunk size in blocks>\n"
947 "\tstripe_width=<RAID stride*data disks in blocks>\n"
948 "\thash_alg=<hash algorithm>\n"
949 "\ttest_fs\n"
950 "\t^test_fs\n"));
951 free(buf);
952 exit(1);
953 }
954 free(buf);
955 }
956
957 static int get_move_bitmap(ext2_filsys fs, int new_ino_blks_per_grp,
958 ext2fs_block_bitmap bmap)
959 {
960 dgrp_t i;
961 blk_t j, needed_blocks = 0;
962 blk_t start_blk, end_blk;
963
964 for (i = 0; i < fs->group_desc_count; i++) {
965
966 start_blk = fs->group_desc[i].bg_inode_table +
967 fs->inode_blocks_per_group;
968
969 end_blk = fs->group_desc[i].bg_inode_table +
970 new_ino_blks_per_grp;
971
972 for (j = start_blk; j < end_blk; j++) {
973
974 if (ext2fs_test_block_bitmap(fs->block_map, j)) {
975 /* FIXME!!
976 * What happens if the block is marked
977 * as a bad block
978 */
979 ext2fs_mark_block_bitmap(bmap, j);
980 needed_blocks++;
981 } else {
982 /*
983 * We are going to use this block for
984 * inode table. So mark them used.
985 */
986 ext2fs_mark_block_bitmap(fs->block_map, j);
987 }
988 }
989 }
990
991 if (needed_blocks > fs->super->s_free_blocks_count ) {
992 return ENOSPC;
993 }
994
995 return 0;
996 }
997
998 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
999 {
1000 char *buf;
1001 errcode_t retval;
1002 blk_t blk, new_blk;
1003 struct blk_move *bmv;
1004
1005
1006 retval = ext2fs_get_mem(fs->blocksize, &buf);
1007 if (retval)
1008 return retval;
1009
1010 for (blk = fs->super->s_first_data_block;
1011 blk < fs->super->s_blocks_count; blk++) {
1012
1013 if (!ext2fs_test_block_bitmap(bmap, blk))
1014 continue;
1015
1016 retval = ext2fs_new_block(fs, blk, NULL, &new_blk);
1017 if (retval)
1018 goto err_out;
1019
1020 /* Mark this block as allocated */
1021 ext2fs_mark_block_bitmap(fs->block_map, new_blk);
1022
1023 /* Add it to block move list */
1024 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1025 if (retval)
1026 goto err_out;
1027
1028 bmv->old_loc = blk;
1029 bmv->new_loc = new_blk;
1030
1031 list_add(&(bmv->list), &blk_move_list);
1032
1033 retval = io_channel_read_blk(fs->io, blk, 1, buf);
1034 if (retval)
1035 goto err_out;
1036
1037 retval = io_channel_write_blk(fs->io, new_blk, 1, buf);
1038 if (retval)
1039 goto err_out;
1040 }
1041
1042 err_out:
1043 ext2fs_free_mem(&buf);
1044 return retval;
1045 }
1046
1047 static blk_t transalate_block(blk_t blk)
1048 {
1049 struct list_head *entry;
1050 struct blk_move *bmv;
1051
1052 list_for_each(entry, &blk_move_list) {
1053
1054 bmv = list_entry(entry, struct blk_move, list);
1055 if (bmv->old_loc == blk)
1056 return bmv->new_loc;
1057 }
1058
1059 return 0;
1060 }
1061
1062 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1063 blk_t *block_nr,
1064 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1065 blk_t ref_block EXT2FS_ATTR((unused)),
1066 int ref_offset EXT2FS_ATTR((unused)),
1067 void *priv_data EXT2FS_ATTR((unused)))
1068 {
1069 int ret = 0;
1070 blk_t new_blk;
1071
1072
1073 new_blk = transalate_block(*block_nr);
1074 if (new_blk) {
1075 *block_nr = new_blk;
1076 /*
1077 * This will force the ext2fs_write_inode in the iterator
1078 */
1079 ret |= BLOCK_CHANGED;
1080 }
1081
1082 return ret;
1083 }
1084
1085 static int inode_scan_and_fix(ext2_filsys fs)
1086 {
1087 errcode_t retval = 0;
1088 ext2_ino_t ino;
1089 blk_t blk;
1090 char *block_buf = 0;
1091 struct ext2_inode inode;
1092 ext2_inode_scan scan = NULL;
1093
1094 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1095 if (retval)
1096 return retval;
1097
1098 retval = ext2fs_open_inode_scan(fs, 0, &scan);
1099 if (retval)
1100 goto err_out;
1101
1102 while (1) {
1103
1104 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1105 if (retval)
1106 goto err_out;
1107
1108 if (!ino)
1109 break;
1110
1111 if (inode.i_links_count == 0)
1112 continue; /* inode not in use */
1113
1114 /* FIXME!!
1115 * If we end up modifying the journal inode
1116 * the sb->s_jnl_blocks will differ. But a
1117 * subsequent e2fsck fixes that.
1118 * Do we need to fix this ??
1119 */
1120
1121 if (inode.i_file_acl) {
1122
1123 blk = transalate_block(inode.i_file_acl);
1124 if (!blk)
1125 continue;
1126
1127 inode.i_file_acl = blk;
1128
1129 /*
1130 * Write the inode to disk so that inode table
1131 * resizing can work
1132 */
1133 retval = ext2fs_write_inode(fs, ino, &inode);
1134 if (retval)
1135 goto err_out;
1136 }
1137
1138 if (!ext2fs_inode_has_valid_blocks(&inode))
1139 continue;
1140
1141 retval = ext2fs_block_iterate2(fs, ino, 0,
1142 block_buf, process_block,
1143 0);
1144 if (retval)
1145 goto err_out;
1146
1147 }
1148
1149 err_out:
1150 ext2fs_free_mem(&block_buf);
1151
1152 return retval;
1153
1154 }
1155
1156 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1157 {
1158 dgrp_t i;
1159 blk_t blk;
1160 errcode_t retval;
1161 int new_ino_blks_per_grp;
1162 unsigned int j;
1163 char *old_itable = NULL, *new_itable = NULL;
1164 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1165 unsigned long old_ino_size;
1166 int old_itable_size, new_itable_size;
1167
1168 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1169 old_ino_size = EXT2_INODE_SIZE(fs->super);
1170
1171 new_ino_blks_per_grp = ext2fs_div_ceil(
1172 EXT2_INODES_PER_GROUP(fs->super) *
1173 new_ino_size,
1174 fs->blocksize);
1175
1176 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1177
1178 retval = ext2fs_get_mem(old_itable_size, &old_itable);
1179 if (retval)
1180 return retval;
1181
1182 retval = ext2fs_get_mem(new_itable_size, &new_itable);
1183 if (retval)
1184 goto err_out;
1185
1186 tmp_old_itable = old_itable;
1187 tmp_new_itable = new_itable;
1188
1189 for (i = 0; i < fs->group_desc_count; i++) {
1190
1191 blk = fs->group_desc[i].bg_inode_table;
1192 retval = io_channel_read_blk(fs->io, blk,
1193 fs->inode_blocks_per_group, old_itable);
1194 if (retval)
1195 goto err_out;
1196
1197 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1198
1199 memcpy(new_itable, old_itable, old_ino_size);
1200
1201 memset(new_itable+old_ino_size, 0,
1202 new_ino_size - old_ino_size);
1203
1204 new_itable += new_ino_size;
1205 old_itable += old_ino_size;
1206 }
1207
1208 /* reset the pointer */
1209 old_itable = tmp_old_itable;
1210 new_itable = tmp_new_itable;
1211
1212 retval = io_channel_write_blk(fs->io, blk,
1213 new_ino_blks_per_grp, new_itable);
1214 if (retval)
1215 goto err_out;
1216 }
1217
1218 /* Update the meta data */
1219 fs->inode_blocks_per_group = new_ino_blks_per_grp;
1220 fs->super->s_inode_size = new_ino_size;
1221
1222 err_out:
1223 if (old_itable)
1224 ext2fs_free_mem(&old_itable);
1225
1226 if (new_itable)
1227 ext2fs_free_mem(&new_itable);
1228
1229 return retval;
1230 }
1231
1232 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1233 {
1234 blk_t blk;
1235 ext2_ino_t ino;
1236 unsigned int group = 0;
1237 unsigned int count = 0;
1238 int total_free = 0;
1239 int group_free = 0;
1240
1241 /*
1242 * First calculate the block statistics
1243 */
1244 for (blk = fs->super->s_first_data_block;
1245 blk < fs->super->s_blocks_count; blk++) {
1246 if (!ext2fs_fast_test_block_bitmap(fs->block_map, blk)) {
1247 group_free++;
1248 total_free++;
1249 }
1250 count++;
1251 if ((count == fs->super->s_blocks_per_group) ||
1252 (blk == fs->super->s_blocks_count-1)) {
1253 fs->group_desc[group++].bg_free_blocks_count =
1254 group_free;
1255 count = 0;
1256 group_free = 0;
1257 }
1258 }
1259 fs->super->s_free_blocks_count = total_free;
1260
1261 /*
1262 * Next, calculate the inode statistics
1263 */
1264 group_free = 0;
1265 total_free = 0;
1266 count = 0;
1267 group = 0;
1268
1269 /* Protect loop from wrap-around if s_inodes_count maxed */
1270 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1271 if (!ext2fs_fast_test_inode_bitmap(fs->inode_map, ino)) {
1272 group_free++;
1273 total_free++;
1274 }
1275 count++;
1276 if ((count == fs->super->s_inodes_per_group) ||
1277 (ino == fs->super->s_inodes_count)) {
1278 fs->group_desc[group++].bg_free_inodes_count =
1279 group_free;
1280 count = 0;
1281 group_free = 0;
1282 }
1283 }
1284 fs->super->s_free_inodes_count = total_free;
1285 ext2fs_mark_super_dirty(fs);
1286 return 0;
1287 }
1288
1289 #define list_for_each_safe(pos, pnext, head) \
1290 for (pos = (head)->next, pnext = pos->next; pos != (head); \
1291 pos = pnext, pnext = pos->next)
1292
1293 static void free_blk_move_list(void)
1294 {
1295 struct list_head *entry, *tmp;
1296 struct blk_move *bmv;
1297
1298 list_for_each_safe(entry, tmp, &blk_move_list) {
1299
1300 bmv = list_entry(entry, struct blk_move, list);
1301 list_del(entry);
1302 ext2fs_free_mem(&bmv);
1303 }
1304
1305 return ;
1306 }
1307
1308 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1309 {
1310 errcode_t retval;
1311 int new_ino_blks_per_grp;
1312 ext2fs_block_bitmap bmap;
1313
1314 ext2fs_read_inode_bitmap(fs);
1315 ext2fs_read_block_bitmap(fs);
1316 INIT_LIST_HEAD(&blk_move_list);
1317
1318
1319 new_ino_blks_per_grp = ext2fs_div_ceil(
1320 EXT2_INODES_PER_GROUP(fs->super)*
1321 new_size,
1322 fs->blocksize);
1323
1324 /* We may change the file system.
1325 * Mark the file system as invalid so that
1326 * the user is prompted to run fsck.
1327 */
1328 fs->super->s_state &= ~EXT2_VALID_FS;
1329
1330 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1331 &bmap);
1332 if (retval)
1333 return retval;
1334
1335 retval = get_move_bitmap(fs, new_ino_blks_per_grp, bmap);
1336 if (retval)
1337 goto err_out;
1338
1339 retval = move_block(fs, bmap);
1340 if (retval)
1341 goto err_out;
1342
1343 retval = inode_scan_and_fix(fs);
1344 if (retval)
1345 goto err_out;
1346
1347 retval = expand_inode_table(fs, new_size);
1348 if (retval)
1349 goto err_out;
1350
1351 ext2fs_calculate_summary_stats(fs);
1352
1353 fs->super->s_state |= EXT2_VALID_FS;
1354 /* mark super block and block bitmap as dirty */
1355 ext2fs_mark_super_dirty(fs);
1356 ext2fs_mark_bb_dirty(fs);
1357
1358 err_out:
1359 free_blk_move_list();
1360 ext2fs_free_block_bitmap(bmap);
1361
1362 return retval;
1363 }
1364
1365 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1366 {
1367 errcode_t retval = 0;
1368 const char *tdb_dir;
1369 char tdb_file[PATH_MAX];
1370 char *dev_name, *tmp_name;
1371
1372 #if 0 /* FIXME!! */
1373 /*
1374 * Configuration via a conf file would be
1375 * nice
1376 */
1377 profile_get_string(profile, "scratch_files",
1378 "directory", 0, 0,
1379 &tdb_dir);
1380 #endif
1381 tmp_name = strdup(name);
1382 dev_name = basename(tmp_name);
1383
1384 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1385 if (!tdb_dir)
1386 tdb_dir="/var/lib/e2fsprogs";
1387
1388 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1389 access(tdb_dir, W_OK))
1390 return 0;
1391
1392 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1393
1394 if (!access(tdb_file, F_OK)) {
1395 if (unlink(tdb_file) < 0) {
1396 retval = errno;
1397 com_err(program_name, retval,
1398 _("while trying to delete %s"),
1399 tdb_file);
1400 return retval;
1401 }
1402 }
1403
1404 set_undo_io_backing_manager(*io_ptr);
1405 *io_ptr = undo_io_manager;
1406 set_undo_io_backup_file(tdb_file);
1407 printf(_("To undo the tune2fs operations please run "
1408 "the command\n e2undo %s %s\n\n"),
1409 tdb_file, name);
1410 free(tmp_name);
1411 return retval;
1412 }
1413
1414 int main (int argc, char ** argv)
1415 {
1416 errcode_t retval;
1417 ext2_filsys fs;
1418 struct ext2_super_block *sb;
1419 io_manager io_ptr, io_ptr_orig = NULL;
1420
1421 #ifdef ENABLE_NLS
1422 setlocale(LC_MESSAGES, "");
1423 setlocale(LC_CTYPE, "");
1424 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1425 textdomain(NLS_CAT_NAME);
1426 #endif
1427 if (argc && *argv)
1428 program_name = *argv;
1429 add_error_table(&et_ext2_error_table);
1430
1431 if (strcmp(get_progname(argv[0]), "findfs") == 0)
1432 do_findfs(argc, argv);
1433 if (strcmp(get_progname(argv[0]), "e2label") == 0)
1434 parse_e2label_options(argc, argv);
1435 else
1436 parse_tune2fs_options(argc, argv);
1437
1438 #ifdef CONFIG_TESTIO_DEBUG
1439 io_ptr = test_io_manager;
1440 test_io_backing_manager = unix_io_manager;
1441 #else
1442 io_ptr = unix_io_manager;
1443 #endif
1444
1445 retry_open:
1446 retval = ext2fs_open2(device_name, io_options, open_flag,
1447 0, 0, io_ptr, &fs);
1448 if (retval) {
1449 com_err (program_name, retval, _("while trying to open %s"),
1450 device_name);
1451 fprintf(stderr,
1452 _("Couldn't find valid filesystem superblock.\n"));
1453 exit(1);
1454 }
1455
1456 if (I_flag && !io_ptr_orig) {
1457 /*
1458 * Check the inode size is right so we can issue an
1459 * error message and bail before setting up the tdb
1460 * file.
1461 */
1462 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1463 fprintf(stderr, _("The inode size is already %d\n"),
1464 new_inode_size);
1465 exit(1);
1466 }
1467 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1468 fprintf(stderr, _("Shrinking the inode size is "
1469 "not supported\n"));
1470 exit(1);
1471 }
1472
1473 /*
1474 * If inode resize is requested use the
1475 * Undo I/O manager
1476 */
1477 io_ptr_orig = io_ptr;
1478 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1479 if (retval)
1480 exit(1);
1481 if (io_ptr != io_ptr_orig) {
1482 ext2fs_close(fs);
1483 goto retry_open;
1484 }
1485 }
1486
1487 sb = fs->super;
1488 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1489
1490 if (print_label) {
1491 /* For e2label emulation */
1492 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
1493 sb->s_volume_name);
1494 remove_error_table(&et_ext2_error_table);
1495 exit(0);
1496 }
1497
1498 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
1499 if (retval) {
1500 com_err("ext2fs_check_if_mount", retval,
1501 _("while determining whether %s is mounted."),
1502 device_name);
1503 exit(1);
1504 }
1505 /* Normally we only need to write out the superblock */
1506 fs->flags |= EXT2_FLAG_SUPER_ONLY;
1507
1508 if (c_flag) {
1509 sb->s_max_mnt_count = max_mount_count;
1510 ext2fs_mark_super_dirty(fs);
1511 printf (_("Setting maximal mount count to %d\n"),
1512 max_mount_count);
1513 }
1514 if (C_flag) {
1515 sb->s_mnt_count = mount_count;
1516 ext2fs_mark_super_dirty(fs);
1517 printf (_("Setting current mount count to %d\n"), mount_count);
1518 }
1519 if (e_flag) {
1520 sb->s_errors = errors;
1521 ext2fs_mark_super_dirty(fs);
1522 printf (_("Setting error behavior to %d\n"), errors);
1523 }
1524 if (g_flag) {
1525 sb->s_def_resgid = resgid;
1526 ext2fs_mark_super_dirty(fs);
1527 printf (_("Setting reserved blocks gid to %lu\n"), resgid);
1528 }
1529 if (i_flag) {
1530 sb->s_checkinterval = interval;
1531 ext2fs_mark_super_dirty(fs);
1532 printf (_("Setting interval between checks to %lu seconds\n"), interval);
1533 }
1534 if (m_flag) {
1535 sb->s_r_blocks_count = (unsigned int) (reserved_ratio *
1536 sb->s_blocks_count / 100.0);
1537 ext2fs_mark_super_dirty(fs);
1538 printf (_("Setting reserved blocks percentage to %g%% (%u blocks)\n"),
1539 reserved_ratio, sb->s_r_blocks_count);
1540 }
1541 if (r_flag) {
1542 if (reserved_blocks >= sb->s_blocks_count/2) {
1543 com_err (program_name, 0,
1544 _("reserved blocks count is too big (%lu)"),
1545 reserved_blocks);
1546 exit (1);
1547 }
1548 sb->s_r_blocks_count = reserved_blocks;
1549 ext2fs_mark_super_dirty(fs);
1550 printf (_("Setting reserved blocks count to %lu\n"),
1551 reserved_blocks);
1552 }
1553 if (s_flag == 1) {
1554 if (sb->s_feature_ro_compat &
1555 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
1556 fputs(_("\nThe filesystem already has sparse "
1557 "superblocks.\n"), stderr);
1558 else {
1559 sb->s_feature_ro_compat |=
1560 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1561 sb->s_state &= ~EXT2_VALID_FS;
1562 ext2fs_mark_super_dirty(fs);
1563 printf(_("\nSparse superblock flag set. %s"),
1564 _(please_fsck));
1565 }
1566 }
1567 if (s_flag == 0) {
1568 fputs(_("\nClearing the sparse superflag not supported.\n"),
1569 stderr);
1570 exit(1);
1571 }
1572 if (T_flag) {
1573 sb->s_lastcheck = last_check_time;
1574 ext2fs_mark_super_dirty(fs);
1575 printf(_("Setting time filesystem last checked to %s\n"),
1576 ctime(&last_check_time));
1577 }
1578 if (u_flag) {
1579 sb->s_def_resuid = resuid;
1580 ext2fs_mark_super_dirty(fs);
1581 printf (_("Setting reserved blocks uid to %lu\n"), resuid);
1582 }
1583 if (L_flag) {
1584 if (strlen(new_label) > sizeof(sb->s_volume_name))
1585 fputs(_("Warning: label too long, truncating.\n"),
1586 stderr);
1587 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
1588 strncpy(sb->s_volume_name, new_label,
1589 sizeof(sb->s_volume_name));
1590 ext2fs_mark_super_dirty(fs);
1591 }
1592 if (M_flag) {
1593 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
1594 strncpy(sb->s_last_mounted, new_last_mounted,
1595 sizeof(sb->s_last_mounted));
1596 ext2fs_mark_super_dirty(fs);
1597 }
1598 if (mntopts_cmd)
1599 update_mntopts(fs, mntopts_cmd);
1600 if (features_cmd)
1601 update_feature_set(fs, features_cmd);
1602 if (extended_cmd)
1603 parse_extended_opts(fs, extended_cmd);
1604 if (journal_size || journal_device)
1605 add_journal(fs);
1606
1607 if (U_flag) {
1608 if ((strcasecmp(new_UUID, "null") == 0) ||
1609 (strcasecmp(new_UUID, "clear") == 0)) {
1610 uuid_clear(sb->s_uuid);
1611 } else if (strcasecmp(new_UUID, "time") == 0) {
1612 uuid_generate_time(sb->s_uuid);
1613 } else if (strcasecmp(new_UUID, "random") == 0) {
1614 uuid_generate(sb->s_uuid);
1615 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
1616 com_err(program_name, 0, _("Invalid UUID format\n"));
1617 exit(1);
1618 }
1619 ext2fs_mark_super_dirty(fs);
1620 }
1621 if (I_flag) {
1622 if (mount_flags & EXT2_MF_MOUNTED) {
1623 fputs(_("The inode size may only be "
1624 "changed when the filesystem is "
1625 "unmounted.\n"), stderr);
1626 exit(1);
1627 }
1628 /*
1629 * We want to update group descriptor also
1630 * with the new free inode count
1631 */
1632 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1633 if (resize_inode(fs, new_inode_size)) {
1634 fputs(_("Error in resizing the inode size.\n"
1635 "Run e2undo to undo the "
1636 "file system changes. \n"), stderr);
1637 } else {
1638 printf (_("Setting inode size %lu\n"),
1639 new_inode_size);
1640 }
1641 }
1642
1643 if (l_flag)
1644 list_super (sb);
1645 if (stride_set) {
1646 sb->s_raid_stride = stride;
1647 ext2fs_mark_super_dirty(fs);
1648 printf(_("Setting stride size to %d\n"), stride);
1649 }
1650 if (stripe_width_set) {
1651 sb->s_raid_stripe_width = stripe_width;
1652 ext2fs_mark_super_dirty(fs);
1653 printf(_("Setting stripe width to %d\n"), stripe_width);
1654 }
1655 remove_error_table(&et_ext2_error_table);
1656 return (ext2fs_close (fs) ? 1 : 0);
1657 }
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