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tune2fs: Fix inefficient O(n**2) algorithms when expanding the inode size
[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 #ifdef HAVE_STDLIB_H
41 #include <stdlib.h>
42 #endif
43 #include <string.h>
44 #include <time.h>
45 #include <unistd.h>
46 #include <sys/types.h>
47 #include <libgen.h>
48 #include <limits.h>
49
50 #include "ext2fs/ext2_fs.h"
51 #include "ext2fs/ext2fs.h"
52 #include "et/com_err.h"
53 #include "uuid/uuid.h"
54 #include "e2p/e2p.h"
55 #include "jfs_user.h"
56 #include "util.h"
57 #include "blkid/blkid.h"
58
59 #include "../version.h"
60 #include "nls-enable.h"
61
62 const char * program_name = "tune2fs";
63 char * device_name;
64 char * new_label, *new_last_mounted, *new_UUID;
65 char * io_options;
66 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
67 static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
68 static int I_flag;
69 static time_t last_check_time;
70 static int print_label;
71 static int max_mount_count, mount_count, mount_flags;
72 static unsigned long interval, reserved_blocks;
73 static double reserved_ratio;
74 static unsigned long resgid, resuid;
75 static unsigned short errors;
76 static int open_flag;
77 static char *features_cmd;
78 static char *mntopts_cmd;
79 static int stride, stripe_width;
80 static int stride_set, stripe_width_set;
81 static char *extended_cmd;
82 static unsigned long new_inode_size;
83
84 int journal_size, journal_flags;
85 char *journal_device;
86
87 static struct list_head blk_move_list;
88
89 struct blk_move {
90 struct list_head list;
91 blk_t old_loc;
92 blk_t new_loc;
93 };
94
95
96 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
97
98 void do_findfs(int argc, char **argv);
99
100 static void usage(void)
101 {
102 fprintf(stderr,
103 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
104 "[-g group]\n"
105 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
106 "\t[-m reserved_blocks_percent] "
107 "[-o [^]mount_options[,...]] \n"
108 "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
109 "[-L volume_label]\n"
110 "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
111 "\t[-E extended-option[,...]] [-T last_check_time] "
112 "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
113 exit (1);
114 }
115
116 static __u32 ok_features[3] = {
117 /* Compat */
118 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
119 EXT2_FEATURE_COMPAT_DIR_INDEX,
120 /* Incompat */
121 EXT2_FEATURE_INCOMPAT_FILETYPE |
122 EXT3_FEATURE_INCOMPAT_EXTENTS |
123 EXT4_FEATURE_INCOMPAT_FLEX_BG,
124 /* R/O compat */
125 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
126 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
127 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
128 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
129 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
130 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
131 };
132
133 static __u32 clear_ok_features[3] = {
134 /* Compat */
135 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
136 EXT2_FEATURE_COMPAT_RESIZE_INODE |
137 EXT2_FEATURE_COMPAT_DIR_INDEX,
138 /* Incompat */
139 EXT2_FEATURE_INCOMPAT_FILETYPE |
140 EXT4_FEATURE_INCOMPAT_FLEX_BG,
141 /* R/O compat */
142 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
143 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
144 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
145 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
146 EXT4_FEATURE_RO_COMPAT_GDT_CSUM
147 };
148
149 /*
150 * Remove an external journal from the filesystem
151 */
152 static void remove_journal_device(ext2_filsys fs)
153 {
154 char *journal_path;
155 ext2_filsys jfs;
156 char buf[1024];
157 journal_superblock_t *jsb;
158 int i, nr_users;
159 errcode_t retval;
160 int commit_remove_journal = 0;
161 io_manager io_ptr;
162
163 if (f_flag)
164 commit_remove_journal = 1; /* force removal even if error */
165
166 uuid_unparse(fs->super->s_journal_uuid, buf);
167 journal_path = blkid_get_devname(NULL, "UUID", buf);
168
169 if (!journal_path) {
170 journal_path =
171 ext2fs_find_block_device(fs->super->s_journal_dev);
172 if (!journal_path)
173 return;
174 }
175
176 #ifdef CONFIG_TESTIO_DEBUG
177 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
178 io_ptr = test_io_manager;
179 test_io_backing_manager = unix_io_manager;
180 } else
181 #endif
182 io_ptr = unix_io_manager;
183 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
184 EXT2_FLAG_JOURNAL_DEV_OK, 0,
185 fs->blocksize, io_ptr, &jfs);
186 if (retval) {
187 com_err(program_name, retval,
188 _("while trying to open external journal"));
189 goto no_valid_journal;
190 }
191 if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
192 fprintf(stderr, _("%s is not a journal device.\n"),
193 journal_path);
194 goto no_valid_journal;
195 }
196
197 /* Get the journal superblock */
198 if ((retval = io_channel_read_blk(jfs->io, 1, -1024, buf))) {
199 com_err(program_name, retval,
200 _("while reading journal superblock"));
201 goto no_valid_journal;
202 }
203
204 jsb = (journal_superblock_t *) buf;
205 if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
206 (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
207 fputs(_("Journal superblock not found!\n"), stderr);
208 goto no_valid_journal;
209 }
210
211 /* Find the filesystem UUID */
212 nr_users = ntohl(jsb->s_nr_users);
213 for (i=0; i < nr_users; i++) {
214 if (memcmp(fs->super->s_uuid,
215 &jsb->s_users[i*16], 16) == 0)
216 break;
217 }
218 if (i >= nr_users) {
219 fputs(_("Filesystem's UUID not found on journal device.\n"),
220 stderr);
221 commit_remove_journal = 1;
222 goto no_valid_journal;
223 }
224 nr_users--;
225 for (i=0; i < nr_users; i++)
226 memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
227 jsb->s_nr_users = htonl(nr_users);
228
229 /* Write back the journal superblock */
230 if ((retval = io_channel_write_blk(jfs->io, 1, -1024, buf))) {
231 com_err(program_name, retval,
232 "while writing journal superblock.");
233 goto no_valid_journal;
234 }
235
236 commit_remove_journal = 1;
237
238 no_valid_journal:
239 if (commit_remove_journal == 0) {
240 fputs(_("Journal NOT removed\n"), stderr);
241 exit(1);
242 }
243 fs->super->s_journal_dev = 0;
244 uuid_clear(fs->super->s_journal_uuid);
245 ext2fs_mark_super_dirty(fs);
246 fputs(_("Journal removed\n"), stdout);
247 free(journal_path);
248 }
249
250 /* Helper function for remove_journal_inode */
251 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
252 int blockcnt EXT2FS_ATTR((unused)),
253 void *private EXT2FS_ATTR((unused)))
254 {
255 blk_t block;
256 int group;
257
258 block = *blocknr;
259 ext2fs_unmark_block_bitmap(fs->block_map,block);
260 group = ext2fs_group_of_blk(fs, block);
261 fs->group_desc[group].bg_free_blocks_count++;
262 ext2fs_group_desc_csum_set(fs, group);
263 fs->super->s_free_blocks_count++;
264 return 0;
265 }
266
267 /*
268 * Remove the journal inode from the filesystem
269 */
270 static void remove_journal_inode(ext2_filsys fs)
271 {
272 struct ext2_inode inode;
273 errcode_t retval;
274 ino_t ino = fs->super->s_journal_inum;
275
276 retval = ext2fs_read_inode(fs, ino, &inode);
277 if (retval) {
278 com_err(program_name, retval,
279 _("while reading journal inode"));
280 exit(1);
281 }
282 if (ino == EXT2_JOURNAL_INO) {
283 retval = ext2fs_read_bitmaps(fs);
284 if (retval) {
285 com_err(program_name, retval,
286 _("while reading bitmaps"));
287 exit(1);
288 }
289 retval = ext2fs_block_iterate(fs, ino,
290 BLOCK_FLAG_READ_ONLY, NULL,
291 release_blocks_proc, NULL);
292 if (retval) {
293 com_err(program_name, retval,
294 _("while clearing journal inode"));
295 exit(1);
296 }
297 memset(&inode, 0, sizeof(inode));
298 ext2fs_mark_bb_dirty(fs);
299 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
300 } else
301 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
302 retval = ext2fs_write_inode(fs, ino, &inode);
303 if (retval) {
304 com_err(program_name, retval,
305 _("while writing journal inode"));
306 exit(1);
307 }
308 fs->super->s_journal_inum = 0;
309 ext2fs_mark_super_dirty(fs);
310 }
311
312 /*
313 * Update the default mount options
314 */
315 static void update_mntopts(ext2_filsys fs, char *mntopts)
316 {
317 struct ext2_super_block *sb= fs->super;
318
319 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
320 fprintf(stderr, _("Invalid mount option set: %s\n"),
321 mntopts);
322 exit(1);
323 }
324 ext2fs_mark_super_dirty(fs);
325 }
326
327 /*
328 * Update the feature set as provided by the user.
329 */
330 static void update_feature_set(ext2_filsys fs, char *features)
331 {
332 struct ext2_super_block *sb= fs->super;
333 __u32 old_features[3];
334 int type_err;
335 unsigned int mask_err;
336
337 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
338 ((&sb->s_feature_compat)[(type)] & (mask)))
339 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
340 !((&sb->s_feature_compat)[(type)] & (mask)))
341 #define FEATURE_CHANGED(type, mask) ((mask) & \
342 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
343
344 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
345 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
346 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
347
348 if (e2p_edit_feature2(features, &sb->s_feature_compat,
349 ok_features, clear_ok_features,
350 &type_err, &mask_err)) {
351 if (!mask_err)
352 fprintf(stderr,
353 _("Invalid filesystem option set: %s\n"),
354 features);
355 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
356 fprintf(stderr, _("Clearing filesystem feature '%s' "
357 "not supported.\n"),
358 e2p_feature2string(type_err &
359 E2P_FEATURE_TYPE_MASK,
360 mask_err));
361 else
362 fprintf(stderr, _("Setting filesystem feature '%s' "
363 "not supported.\n"),
364 e2p_feature2string(type_err, mask_err));
365 exit(1);
366 }
367
368 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
369 if ((mount_flags & EXT2_MF_MOUNTED) &&
370 !(mount_flags & EXT2_MF_READONLY)) {
371 fputs(_("The has_journal feature may only be "
372 "cleared when the filesystem is\n"
373 "unmounted or mounted "
374 "read-only.\n"), stderr);
375 exit(1);
376 }
377 if (sb->s_feature_incompat &
378 EXT3_FEATURE_INCOMPAT_RECOVER) {
379 fputs(_("The needs_recovery flag is set. "
380 "Please run e2fsck before clearing\n"
381 "the has_journal flag.\n"), stderr);
382 exit(1);
383 }
384 if (sb->s_journal_inum) {
385 remove_journal_inode(fs);
386 }
387 if (sb->s_journal_dev) {
388 remove_journal_device(fs);
389 }
390 }
391
392 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
393 /*
394 * If adding a journal flag, let the create journal
395 * code below handle setting the flag and creating the
396 * journal. We supply a default size if necessary.
397 */
398 if (!journal_size)
399 journal_size = -1;
400 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
401 }
402
403 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
404 if (!sb->s_def_hash_version)
405 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
406 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
407 uuid_generate((unsigned char *) sb->s_hash_seed);
408 }
409
410 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
411 if (ext2fs_check_desc(fs)) {
412 fputs(_("Clearing the flex_bg flag would "
413 "cause the the filesystem to be\n"
414 "inconsistent.\n"), stderr);
415 exit(1);
416 }
417 }
418
419 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
420 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
421 if ((mount_flags & EXT2_MF_MOUNTED) &&
422 !(mount_flags & EXT2_MF_READONLY)) {
423 fputs(_("The huge_file feature may only be "
424 "cleared when the filesystem is\n"
425 "unmounted or mounted "
426 "read-only.\n"), stderr);
427 exit(1);
428 }
429 }
430
431 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
432 (sb->s_feature_compat || sb->s_feature_ro_compat ||
433 sb->s_feature_incompat))
434 ext2fs_update_dynamic_rev(fs);
435
436 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
437 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
438 FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
439 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) ||
440 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
441 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
442 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
443 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
444 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
445 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
446 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
447 EXT2_FEATURE_RO_COMPAT_LARGE_FILE)) {
448 sb->s_state &= ~EXT2_VALID_FS;
449 printf("\n%s\n", _(please_fsck));
450 if (mount_flags & EXT2_MF_READONLY)
451 printf(_("(and reboot afterwards!)\n"));
452 }
453
454 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
455 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
456 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
457 ext2fs_mark_super_dirty(fs);
458 }
459
460 /*
461 * Add a journal to the filesystem.
462 */
463 static void add_journal(ext2_filsys fs)
464 {
465 unsigned long journal_blocks;
466 errcode_t retval;
467 ext2_filsys jfs;
468 io_manager io_ptr;
469
470 if (fs->super->s_feature_compat &
471 EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
472 fputs(_("The filesystem already has a journal.\n"), stderr);
473 goto err;
474 }
475 if (journal_device) {
476 check_plausibility(journal_device);
477 check_mount(journal_device, 0, _("journal"));
478 #ifdef CONFIG_TESTIO_DEBUG
479 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
480 io_ptr = test_io_manager;
481 test_io_backing_manager = unix_io_manager;
482 } else
483 #endif
484 io_ptr = unix_io_manager;
485 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
486 EXT2_FLAG_JOURNAL_DEV_OK, 0,
487 fs->blocksize, io_ptr, &jfs);
488 if (retval) {
489 com_err(program_name, retval,
490 _("\n\twhile trying to open journal on %s\n"),
491 journal_device);
492 goto err;
493 }
494 printf(_("Creating journal on device %s: "),
495 journal_device);
496 fflush(stdout);
497
498 retval = ext2fs_add_journal_device(fs, jfs);
499 ext2fs_close(jfs);
500 if (retval) {
501 com_err (program_name, retval,
502 _("while adding filesystem to journal on %s"),
503 journal_device);
504 goto err;
505 }
506 fputs(_("done\n"), stdout);
507 } else if (journal_size) {
508 fputs(_("Creating journal inode: "), stdout);
509 fflush(stdout);
510 journal_blocks = figure_journal_size(journal_size, fs);
511
512 retval = ext2fs_add_journal_inode(fs, journal_blocks,
513 journal_flags);
514 if (retval) {
515 fprintf(stderr, "\n");
516 com_err(program_name, retval,
517 _("\n\twhile trying to create journal file"));
518 exit(1);
519 } else
520 fputs(_("done\n"), stdout);
521 /*
522 * If the filesystem wasn't mounted, we need to force
523 * the block group descriptors out.
524 */
525 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
526 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
527 }
528 print_check_message(fs);
529 return;
530
531 err:
532 if (journal_device)
533 free(journal_device);
534 exit(1);
535 }
536
537
538 static void parse_e2label_options(int argc, char ** argv)
539 {
540 if ((argc < 2) || (argc > 3)) {
541 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
542 exit(1);
543 }
544 io_options = strchr(argv[1], '?');
545 if (io_options)
546 *io_options++ = 0;
547 device_name = blkid_get_devname(NULL, argv[1], NULL);
548 if (!device_name) {
549 com_err("e2label", 0, _("Unable to resolve '%s'"),
550 argv[1]);
551 exit(1);
552 }
553 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
554 if (argc == 3) {
555 open_flag |= EXT2_FLAG_RW;
556 L_flag = 1;
557 new_label = argv[2];
558 } else
559 print_label++;
560 }
561
562 static time_t parse_time(char *str)
563 {
564 struct tm ts;
565
566 if (strcmp(str, "now") == 0) {
567 return (time(0));
568 }
569 memset(&ts, 0, sizeof(ts));
570 #ifdef HAVE_STRPTIME
571 strptime(str, "%Y%m%d%H%M%S", &ts);
572 #else
573 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
574 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
575 ts.tm_year -= 1900;
576 ts.tm_mon -= 1;
577 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
578 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
579 ts.tm_min > 59 || ts.tm_sec > 61)
580 ts.tm_mday = 0;
581 #endif
582 if (ts.tm_mday == 0) {
583 com_err(program_name, 0,
584 _("Couldn't parse date/time specifier: %s"),
585 str);
586 usage();
587 }
588 ts.tm_isdst = -1;
589 return (mktime(&ts));
590 }
591
592 static void parse_tune2fs_options(int argc, char **argv)
593 {
594 int c;
595 char * tmp;
596 struct group * gr;
597 struct passwd * pw;
598
599 open_flag = 0;
600
601 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
602 while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:")) != EOF)
603 switch (c)
604 {
605 case 'c':
606 max_mount_count = strtol (optarg, &tmp, 0);
607 if (*tmp || max_mount_count > 16000) {
608 com_err (program_name, 0,
609 _("bad mounts count - %s"),
610 optarg);
611 usage();
612 }
613 if (max_mount_count == 0)
614 max_mount_count = -1;
615 c_flag = 1;
616 open_flag = EXT2_FLAG_RW;
617 break;
618 case 'C':
619 mount_count = strtoul (optarg, &tmp, 0);
620 if (*tmp || mount_count > 16000) {
621 com_err (program_name, 0,
622 _("bad mounts count - %s"),
623 optarg);
624 usage();
625 }
626 C_flag = 1;
627 open_flag = EXT2_FLAG_RW;
628 break;
629 case 'e':
630 if (strcmp (optarg, "continue") == 0)
631 errors = EXT2_ERRORS_CONTINUE;
632 else if (strcmp (optarg, "remount-ro") == 0)
633 errors = EXT2_ERRORS_RO;
634 else if (strcmp (optarg, "panic") == 0)
635 errors = EXT2_ERRORS_PANIC;
636 else {
637 com_err (program_name, 0,
638 _("bad error behavior - %s"),
639 optarg);
640 usage();
641 }
642 e_flag = 1;
643 open_flag = EXT2_FLAG_RW;
644 break;
645 case 'E':
646 extended_cmd = optarg;
647 open_flag |= EXT2_FLAG_RW;
648 break;
649 case 'f': /* Force */
650 f_flag = 1;
651 break;
652 case 'g':
653 resgid = strtoul (optarg, &tmp, 0);
654 if (*tmp) {
655 gr = getgrnam (optarg);
656 if (gr == NULL)
657 tmp = optarg;
658 else {
659 resgid = gr->gr_gid;
660 *tmp =0;
661 }
662 }
663 if (*tmp) {
664 com_err (program_name, 0,
665 _("bad gid/group name - %s"),
666 optarg);
667 usage();
668 }
669 g_flag = 1;
670 open_flag = EXT2_FLAG_RW;
671 break;
672 case 'i':
673 interval = strtoul (optarg, &tmp, 0);
674 switch (*tmp) {
675 case 's':
676 tmp++;
677 break;
678 case '\0':
679 case 'd':
680 case 'D': /* days */
681 interval *= 86400;
682 if (*tmp != '\0')
683 tmp++;
684 break;
685 case 'm':
686 case 'M': /* months! */
687 interval *= 86400 * 30;
688 tmp++;
689 break;
690 case 'w':
691 case 'W': /* weeks */
692 interval *= 86400 * 7;
693 tmp++;
694 break;
695 }
696 if (*tmp) {
697 com_err (program_name, 0,
698 _("bad interval - %s"), optarg);
699 usage();
700 }
701 i_flag = 1;
702 open_flag = EXT2_FLAG_RW;
703 break;
704 case 'j':
705 if (!journal_size)
706 journal_size = -1;
707 open_flag = EXT2_FLAG_RW;
708 break;
709 case 'J':
710 parse_journal_opts(optarg);
711 open_flag = EXT2_FLAG_RW;
712 break;
713 case 'l':
714 l_flag = 1;
715 break;
716 case 'L':
717 new_label = optarg;
718 L_flag = 1;
719 open_flag |= EXT2_FLAG_RW |
720 EXT2_FLAG_JOURNAL_DEV_OK;
721 break;
722 case 'm':
723 reserved_ratio = strtod(optarg, &tmp);
724 if (*tmp || reserved_ratio > 50) {
725 com_err (program_name, 0,
726 _("bad reserved block ratio - %s"),
727 optarg);
728 usage();
729 }
730 m_flag = 1;
731 open_flag = EXT2_FLAG_RW;
732 break;
733 case 'M':
734 new_last_mounted = optarg;
735 M_flag = 1;
736 open_flag = EXT2_FLAG_RW;
737 break;
738 case 'o':
739 if (mntopts_cmd) {
740 com_err (program_name, 0,
741 _("-o may only be specified once"));
742 usage();
743 }
744 mntopts_cmd = optarg;
745 open_flag = EXT2_FLAG_RW;
746 break;
747
748 case 'O':
749 if (features_cmd) {
750 com_err (program_name, 0,
751 _("-O may only be specified once"));
752 usage();
753 }
754 features_cmd = optarg;
755 open_flag = EXT2_FLAG_RW;
756 break;
757 case 'r':
758 reserved_blocks = strtoul (optarg, &tmp, 0);
759 if (*tmp) {
760 com_err (program_name, 0,
761 _("bad reserved blocks count - %s"),
762 optarg);
763 usage();
764 }
765 r_flag = 1;
766 open_flag = EXT2_FLAG_RW;
767 break;
768 case 's': /* Deprecated */
769 s_flag = atoi(optarg);
770 open_flag = EXT2_FLAG_RW;
771 break;
772 case 'T':
773 T_flag = 1;
774 last_check_time = parse_time(optarg);
775 open_flag = EXT2_FLAG_RW;
776 break;
777 case 'u':
778 resuid = strtoul (optarg, &tmp, 0);
779 if (*tmp) {
780 pw = getpwnam (optarg);
781 if (pw == NULL)
782 tmp = optarg;
783 else {
784 resuid = pw->pw_uid;
785 *tmp = 0;
786 }
787 }
788 if (*tmp) {
789 com_err (program_name, 0,
790 _("bad uid/user name - %s"),
791 optarg);
792 usage();
793 }
794 u_flag = 1;
795 open_flag = EXT2_FLAG_RW;
796 break;
797 case 'U':
798 new_UUID = optarg;
799 U_flag = 1;
800 open_flag = EXT2_FLAG_RW |
801 EXT2_FLAG_JOURNAL_DEV_OK;
802 break;
803 case 'I':
804 new_inode_size = strtoul (optarg, &tmp, 0);
805 if (*tmp) {
806 com_err (program_name, 0,
807 _("bad inode size - %s"),
808 optarg);
809 usage();
810 }
811 if (!((new_inode_size &
812 (new_inode_size - 1)) == 0)) {
813 com_err (program_name, 0,
814 _("Inode size must be a "
815 "power of two- %s"),
816 optarg);
817 usage();
818 }
819 open_flag = EXT2_FLAG_RW;
820 I_flag = 1;
821 break;
822 default:
823 usage();
824 }
825 if (optind < argc - 1 || optind == argc)
826 usage();
827 if (!open_flag && !l_flag)
828 usage();
829 io_options = strchr(argv[optind], '?');
830 if (io_options)
831 *io_options++ = 0;
832 device_name = blkid_get_devname(NULL, argv[optind], NULL);
833 if (!device_name) {
834 com_err("tune2fs", 0, _("Unable to resolve '%s'"),
835 argv[optind]);
836 exit(1);
837 }
838 }
839
840 void do_findfs(int argc, char **argv)
841 {
842 char *dev;
843
844 if ((argc != 2) ||
845 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
846 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
847 exit(2);
848 }
849 dev = blkid_get_devname(NULL, argv[1], NULL);
850 if (!dev) {
851 com_err("findfs", 0, _("Unable to resolve '%s'"),
852 argv[1]);
853 exit(1);
854 }
855 puts(dev);
856 exit(0);
857 }
858
859 static void parse_extended_opts(ext2_filsys fs, const char *opts)
860 {
861 char *buf, *token, *next, *p, *arg;
862 int len, hash_alg;
863 int r_usage = 0;
864
865 len = strlen(opts);
866 buf = malloc(len+1);
867 if (!buf) {
868 fprintf(stderr,
869 _("Couldn't allocate memory to parse options!\n"));
870 exit(1);
871 }
872 strcpy(buf, opts);
873 for (token = buf; token && *token; token = next) {
874 p = strchr(token, ',');
875 next = 0;
876 if (p) {
877 *p = 0;
878 next = p+1;
879 }
880 arg = strchr(token, '=');
881 if (arg) {
882 *arg = 0;
883 arg++;
884 }
885 if (!strcmp(token, "test_fs")) {
886 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
887 printf("Setting test filesystem flag\n");
888 ext2fs_mark_super_dirty(fs);
889 } else if (!strcmp(token, "^test_fs")) {
890 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
891 printf("Clearing test filesystem flag\n");
892 ext2fs_mark_super_dirty(fs);
893 } else if (strcmp(token, "stride") == 0) {
894 if (!arg) {
895 r_usage++;
896 continue;
897 }
898 stride = strtoul(arg, &p, 0);
899 if (*p || (stride == 0)) {
900 fprintf(stderr,
901 _("Invalid RAID stride: %s\n"),
902 arg);
903 r_usage++;
904 continue;
905 }
906 stride_set = 1;
907 } else if (strcmp(token, "stripe-width") == 0 ||
908 strcmp(token, "stripe_width") == 0) {
909 if (!arg) {
910 r_usage++;
911 continue;
912 }
913 stripe_width = strtoul(arg, &p, 0);
914 if (*p || (stripe_width == 0)) {
915 fprintf(stderr,
916 _("Invalid RAID stripe-width: %s\n"),
917 arg);
918 r_usage++;
919 continue;
920 }
921 stripe_width_set = 1;
922 } else if (strcmp(token, "hash_alg") == 0 ||
923 strcmp(token, "hash-alg") == 0) {
924 if (!arg) {
925 r_usage++;
926 continue;
927 }
928 hash_alg = e2p_string2hash(arg);
929 if (hash_alg < 0) {
930 fprintf(stderr,
931 _("Invalid hash algorithm: %s\n"),
932 arg);
933 r_usage++;
934 continue;
935 }
936 fs->super->s_def_hash_version = hash_alg;
937 printf(_("Setting default hash algorithm "
938 "to %s (%d)\n"),
939 arg, hash_alg);
940 ext2fs_mark_super_dirty(fs);
941 } else
942 r_usage++;
943 }
944 if (r_usage) {
945 fprintf(stderr, _("\nBad options specified.\n\n"
946 "Extended options are separated by commas, "
947 "and may take an argument which\n"
948 "\tis set off by an equals ('=') sign.\n\n"
949 "Valid extended options are:\n"
950 "\tstride=<RAID per-disk chunk size in blocks>\n"
951 "\tstripe_width=<RAID stride*data disks in blocks>\n"
952 "\thash_alg=<hash algorithm>\n"
953 "\ttest_fs\n"
954 "\t^test_fs\n"));
955 free(buf);
956 exit(1);
957 }
958 free(buf);
959 }
960
961 static int get_move_bitmap(ext2_filsys fs, int new_ino_blks_per_grp,
962 ext2fs_block_bitmap bmap)
963 {
964 dgrp_t i;
965 blk_t j, needed_blocks = 0;
966 blk_t start_blk, end_blk;
967
968 for (i = 0; i < fs->group_desc_count; i++) {
969
970 start_blk = fs->group_desc[i].bg_inode_table +
971 fs->inode_blocks_per_group;
972
973 end_blk = fs->group_desc[i].bg_inode_table +
974 new_ino_blks_per_grp;
975
976 for (j = start_blk; j < end_blk; j++) {
977
978 if (ext2fs_test_block_bitmap(fs->block_map, j)) {
979 /* FIXME!!
980 * What happens if the block is marked
981 * as a bad block
982 */
983 ext2fs_mark_block_bitmap(bmap, j);
984 needed_blocks++;
985 } else {
986 /*
987 * We are going to use this block for
988 * inode table. So mark them used.
989 */
990 ext2fs_mark_block_bitmap(fs->block_map, j);
991 }
992 }
993 }
994
995 if (needed_blocks > fs->super->s_free_blocks_count ) {
996 return ENOSPC;
997 }
998
999 return 0;
1000 }
1001
1002 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
1003 {
1004 char *buf;
1005 errcode_t retval;
1006 blk_t blk, new_blk;
1007 struct blk_move *bmv;
1008
1009
1010 retval = ext2fs_get_mem(fs->blocksize, &buf);
1011 if (retval)
1012 return retval;
1013
1014 for (new_blk = blk = fs->super->s_first_data_block;
1015 blk < fs->super->s_blocks_count; blk++) {
1016
1017 if (!ext2fs_test_block_bitmap(bmap, blk))
1018 continue;
1019
1020 retval = ext2fs_new_block(fs, new_blk, NULL, &new_blk);
1021 if (retval)
1022 goto err_out;
1023
1024 /* Mark this block as allocated */
1025 ext2fs_mark_block_bitmap(fs->block_map, new_blk);
1026
1027 /* Add it to block move list */
1028 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1029 if (retval)
1030 goto err_out;
1031
1032 bmv->old_loc = blk;
1033 bmv->new_loc = new_blk;
1034
1035 list_add(&(bmv->list), &blk_move_list);
1036
1037 retval = io_channel_read_blk(fs->io, blk, 1, buf);
1038 if (retval)
1039 goto err_out;
1040
1041 retval = io_channel_write_blk(fs->io, new_blk, 1, buf);
1042 if (retval)
1043 goto err_out;
1044 }
1045
1046 err_out:
1047 ext2fs_free_mem(&buf);
1048 return retval;
1049 }
1050
1051 static blk_t transalate_block(blk_t blk)
1052 {
1053 struct list_head *entry;
1054 struct blk_move *bmv;
1055
1056 list_for_each(entry, &blk_move_list) {
1057
1058 bmv = list_entry(entry, struct blk_move, list);
1059 if (bmv->old_loc == blk)
1060 return bmv->new_loc;
1061 }
1062
1063 return 0;
1064 }
1065
1066 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1067 blk_t *block_nr,
1068 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1069 blk_t ref_block EXT2FS_ATTR((unused)),
1070 int ref_offset EXT2FS_ATTR((unused)),
1071 void *priv_data)
1072 {
1073 int ret = 0;
1074 blk_t new_blk;
1075 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
1076
1077 if (!ext2fs_test_block_bitmap(bmap, *block_nr))
1078 return 0;
1079 new_blk = transalate_block(*block_nr);
1080 if (new_blk) {
1081 *block_nr = new_blk;
1082 /*
1083 * This will force the ext2fs_write_inode in the iterator
1084 */
1085 ret |= BLOCK_CHANGED;
1086 }
1087
1088 return ret;
1089 }
1090
1091 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1092 {
1093 errcode_t retval = 0;
1094 ext2_ino_t ino;
1095 blk_t blk;
1096 char *block_buf = 0;
1097 struct ext2_inode inode;
1098 ext2_inode_scan scan = NULL;
1099
1100 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1101 if (retval)
1102 return retval;
1103
1104 retval = ext2fs_open_inode_scan(fs, 0, &scan);
1105 if (retval)
1106 goto err_out;
1107
1108 while (1) {
1109
1110 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1111 if (retval)
1112 goto err_out;
1113
1114 if (!ino)
1115 break;
1116
1117 if (inode.i_links_count == 0)
1118 continue; /* inode not in use */
1119
1120 /* FIXME!!
1121 * If we end up modifying the journal inode
1122 * the sb->s_jnl_blocks will differ. But a
1123 * subsequent e2fsck fixes that.
1124 * Do we need to fix this ??
1125 */
1126
1127 if (inode.i_file_acl &&
1128 ext2fs_test_block_bitmap(bmap, inode.i_file_acl)) {
1129 blk = transalate_block(inode.i_file_acl);
1130 if (!blk)
1131 continue;
1132
1133 inode.i_file_acl = blk;
1134
1135 /*
1136 * Write the inode to disk so that inode table
1137 * resizing can work
1138 */
1139 retval = ext2fs_write_inode(fs, ino, &inode);
1140 if (retval)
1141 goto err_out;
1142 }
1143
1144 if (!ext2fs_inode_has_valid_blocks(&inode))
1145 continue;
1146
1147 retval = ext2fs_block_iterate2(fs, ino, 0, block_buf,
1148 process_block, bmap);
1149 if (retval)
1150 goto err_out;
1151
1152 }
1153
1154 err_out:
1155 ext2fs_free_mem(&block_buf);
1156
1157 return retval;
1158
1159 }
1160
1161 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1162 {
1163 dgrp_t i;
1164 blk_t blk;
1165 errcode_t retval;
1166 int new_ino_blks_per_grp;
1167 unsigned int j;
1168 char *old_itable = NULL, *new_itable = NULL;
1169 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1170 unsigned long old_ino_size;
1171 int old_itable_size, new_itable_size;
1172
1173 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1174 old_ino_size = EXT2_INODE_SIZE(fs->super);
1175
1176 new_ino_blks_per_grp = ext2fs_div_ceil(
1177 EXT2_INODES_PER_GROUP(fs->super) *
1178 new_ino_size,
1179 fs->blocksize);
1180
1181 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1182
1183 retval = ext2fs_get_mem(old_itable_size, &old_itable);
1184 if (retval)
1185 return retval;
1186
1187 retval = ext2fs_get_mem(new_itable_size, &new_itable);
1188 if (retval)
1189 goto err_out;
1190
1191 tmp_old_itable = old_itable;
1192 tmp_new_itable = new_itable;
1193
1194 for (i = 0; i < fs->group_desc_count; i++) {
1195
1196 blk = fs->group_desc[i].bg_inode_table;
1197 retval = io_channel_read_blk(fs->io, blk,
1198 fs->inode_blocks_per_group, old_itable);
1199 if (retval)
1200 goto err_out;
1201
1202 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1203
1204 memcpy(new_itable, old_itable, old_ino_size);
1205
1206 memset(new_itable+old_ino_size, 0,
1207 new_ino_size - old_ino_size);
1208
1209 new_itable += new_ino_size;
1210 old_itable += old_ino_size;
1211 }
1212
1213 /* reset the pointer */
1214 old_itable = tmp_old_itable;
1215 new_itable = tmp_new_itable;
1216
1217 retval = io_channel_write_blk(fs->io, blk,
1218 new_ino_blks_per_grp, new_itable);
1219 if (retval)
1220 goto err_out;
1221 }
1222
1223 /* Update the meta data */
1224 fs->inode_blocks_per_group = new_ino_blks_per_grp;
1225 fs->super->s_inode_size = new_ino_size;
1226
1227 err_out:
1228 if (old_itable)
1229 ext2fs_free_mem(&old_itable);
1230
1231 if (new_itable)
1232 ext2fs_free_mem(&new_itable);
1233
1234 return retval;
1235 }
1236
1237 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1238 {
1239 blk_t blk;
1240 ext2_ino_t ino;
1241 unsigned int group = 0;
1242 unsigned int count = 0;
1243 int total_free = 0;
1244 int group_free = 0;
1245
1246 /*
1247 * First calculate the block statistics
1248 */
1249 for (blk = fs->super->s_first_data_block;
1250 blk < fs->super->s_blocks_count; blk++) {
1251 if (!ext2fs_fast_test_block_bitmap(fs->block_map, blk)) {
1252 group_free++;
1253 total_free++;
1254 }
1255 count++;
1256 if ((count == fs->super->s_blocks_per_group) ||
1257 (blk == fs->super->s_blocks_count-1)) {
1258 fs->group_desc[group++].bg_free_blocks_count =
1259 group_free;
1260 count = 0;
1261 group_free = 0;
1262 }
1263 }
1264 fs->super->s_free_blocks_count = total_free;
1265
1266 /*
1267 * Next, calculate the inode statistics
1268 */
1269 group_free = 0;
1270 total_free = 0;
1271 count = 0;
1272 group = 0;
1273
1274 /* Protect loop from wrap-around if s_inodes_count maxed */
1275 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1276 if (!ext2fs_fast_test_inode_bitmap(fs->inode_map, ino)) {
1277 group_free++;
1278 total_free++;
1279 }
1280 count++;
1281 if ((count == fs->super->s_inodes_per_group) ||
1282 (ino == fs->super->s_inodes_count)) {
1283 fs->group_desc[group++].bg_free_inodes_count =
1284 group_free;
1285 count = 0;
1286 group_free = 0;
1287 }
1288 }
1289 fs->super->s_free_inodes_count = total_free;
1290 ext2fs_mark_super_dirty(fs);
1291 return 0;
1292 }
1293
1294 #define list_for_each_safe(pos, pnext, head) \
1295 for (pos = (head)->next, pnext = pos->next; pos != (head); \
1296 pos = pnext, pnext = pos->next)
1297
1298 static void free_blk_move_list(void)
1299 {
1300 struct list_head *entry, *tmp;
1301 struct blk_move *bmv;
1302
1303 list_for_each_safe(entry, tmp, &blk_move_list) {
1304
1305 bmv = list_entry(entry, struct blk_move, list);
1306 list_del(entry);
1307 ext2fs_free_mem(&bmv);
1308 }
1309
1310 return ;
1311 }
1312
1313 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1314 {
1315 errcode_t retval;
1316 int new_ino_blks_per_grp;
1317 ext2fs_block_bitmap bmap;
1318
1319 ext2fs_read_inode_bitmap(fs);
1320 ext2fs_read_block_bitmap(fs);
1321 INIT_LIST_HEAD(&blk_move_list);
1322
1323
1324 new_ino_blks_per_grp = ext2fs_div_ceil(
1325 EXT2_INODES_PER_GROUP(fs->super)*
1326 new_size,
1327 fs->blocksize);
1328
1329 /* We may change the file system.
1330 * Mark the file system as invalid so that
1331 * the user is prompted to run fsck.
1332 */
1333 fs->super->s_state &= ~EXT2_VALID_FS;
1334
1335 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1336 &bmap);
1337 if (retval)
1338 return retval;
1339
1340 retval = get_move_bitmap(fs, new_ino_blks_per_grp, bmap);
1341 if (retval)
1342 goto err_out;
1343
1344 retval = move_block(fs, bmap);
1345 if (retval)
1346 goto err_out;
1347
1348 retval = inode_scan_and_fix(fs, bmap);
1349 if (retval)
1350 goto err_out;
1351
1352 retval = expand_inode_table(fs, new_size);
1353 if (retval)
1354 goto err_out;
1355
1356 ext2fs_calculate_summary_stats(fs);
1357
1358 fs->super->s_state |= EXT2_VALID_FS;
1359 /* mark super block and block bitmap as dirty */
1360 ext2fs_mark_super_dirty(fs);
1361 ext2fs_mark_bb_dirty(fs);
1362
1363 err_out:
1364 free_blk_move_list();
1365 ext2fs_free_block_bitmap(bmap);
1366
1367 return retval;
1368 }
1369
1370 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1371 {
1372 errcode_t retval = 0;
1373 const char *tdb_dir;
1374 char tdb_file[PATH_MAX];
1375 char *dev_name, *tmp_name;
1376
1377 #if 0 /* FIXME!! */
1378 /*
1379 * Configuration via a conf file would be
1380 * nice
1381 */
1382 profile_get_string(profile, "scratch_files",
1383 "directory", 0, 0,
1384 &tdb_dir);
1385 #endif
1386 tmp_name = strdup(name);
1387 dev_name = basename(tmp_name);
1388
1389 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1390 if (!tdb_dir)
1391 tdb_dir="/var/lib/e2fsprogs";
1392
1393 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1394 access(tdb_dir, W_OK))
1395 return 0;
1396
1397 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1398
1399 if (!access(tdb_file, F_OK)) {
1400 if (unlink(tdb_file) < 0) {
1401 retval = errno;
1402 com_err(program_name, retval,
1403 _("while trying to delete %s"),
1404 tdb_file);
1405 return retval;
1406 }
1407 }
1408
1409 set_undo_io_backing_manager(*io_ptr);
1410 *io_ptr = undo_io_manager;
1411 set_undo_io_backup_file(tdb_file);
1412 printf(_("To undo the tune2fs operations please run "
1413 "the command\n e2undo %s %s\n\n"),
1414 tdb_file, name);
1415 free(tmp_name);
1416 return retval;
1417 }
1418
1419 int main (int argc, char ** argv)
1420 {
1421 errcode_t retval;
1422 ext2_filsys fs;
1423 struct ext2_super_block *sb;
1424 io_manager io_ptr, io_ptr_orig = NULL;
1425
1426 #ifdef ENABLE_NLS
1427 setlocale(LC_MESSAGES, "");
1428 setlocale(LC_CTYPE, "");
1429 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1430 textdomain(NLS_CAT_NAME);
1431 #endif
1432 if (argc && *argv)
1433 program_name = *argv;
1434 add_error_table(&et_ext2_error_table);
1435
1436 if (strcmp(get_progname(argv[0]), "findfs") == 0)
1437 do_findfs(argc, argv);
1438 if (strcmp(get_progname(argv[0]), "e2label") == 0)
1439 parse_e2label_options(argc, argv);
1440 else
1441 parse_tune2fs_options(argc, argv);
1442
1443 #ifdef CONFIG_TESTIO_DEBUG
1444 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
1445 io_ptr = test_io_manager;
1446 test_io_backing_manager = unix_io_manager;
1447 } else
1448 #endif
1449 io_ptr = unix_io_manager;
1450
1451 retry_open:
1452 retval = ext2fs_open2(device_name, io_options, open_flag,
1453 0, 0, io_ptr, &fs);
1454 if (retval) {
1455 com_err (program_name, retval, _("while trying to open %s"),
1456 device_name);
1457 fprintf(stderr,
1458 _("Couldn't find valid filesystem superblock.\n"));
1459 exit(1);
1460 }
1461
1462 if (I_flag && !io_ptr_orig) {
1463 /*
1464 * Check the inode size is right so we can issue an
1465 * error message and bail before setting up the tdb
1466 * file.
1467 */
1468 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1469 fprintf(stderr, _("The inode size is already %d\n"),
1470 new_inode_size);
1471 exit(1);
1472 }
1473 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1474 fprintf(stderr, _("Shrinking the inode size is "
1475 "not supported\n"));
1476 exit(1);
1477 }
1478
1479 /*
1480 * If inode resize is requested use the
1481 * Undo I/O manager
1482 */
1483 io_ptr_orig = io_ptr;
1484 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1485 if (retval)
1486 exit(1);
1487 if (io_ptr != io_ptr_orig) {
1488 ext2fs_close(fs);
1489 goto retry_open;
1490 }
1491 }
1492
1493 sb = fs->super;
1494 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1495
1496 if (print_label) {
1497 /* For e2label emulation */
1498 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
1499 sb->s_volume_name);
1500 remove_error_table(&et_ext2_error_table);
1501 exit(0);
1502 }
1503
1504 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
1505 if (retval) {
1506 com_err("ext2fs_check_if_mount", retval,
1507 _("while determining whether %s is mounted."),
1508 device_name);
1509 exit(1);
1510 }
1511 /* Normally we only need to write out the superblock */
1512 fs->flags |= EXT2_FLAG_SUPER_ONLY;
1513
1514 if (c_flag) {
1515 sb->s_max_mnt_count = max_mount_count;
1516 ext2fs_mark_super_dirty(fs);
1517 printf (_("Setting maximal mount count to %d\n"),
1518 max_mount_count);
1519 }
1520 if (C_flag) {
1521 sb->s_mnt_count = mount_count;
1522 ext2fs_mark_super_dirty(fs);
1523 printf (_("Setting current mount count to %d\n"), mount_count);
1524 }
1525 if (e_flag) {
1526 sb->s_errors = errors;
1527 ext2fs_mark_super_dirty(fs);
1528 printf (_("Setting error behavior to %d\n"), errors);
1529 }
1530 if (g_flag) {
1531 sb->s_def_resgid = resgid;
1532 ext2fs_mark_super_dirty(fs);
1533 printf (_("Setting reserved blocks gid to %lu\n"), resgid);
1534 }
1535 if (i_flag) {
1536 sb->s_checkinterval = interval;
1537 ext2fs_mark_super_dirty(fs);
1538 printf (_("Setting interval between checks to %lu seconds\n"), interval);
1539 }
1540 if (m_flag) {
1541 sb->s_r_blocks_count = (unsigned int) (reserved_ratio *
1542 sb->s_blocks_count / 100.0);
1543 ext2fs_mark_super_dirty(fs);
1544 printf (_("Setting reserved blocks percentage to %g%% (%u blocks)\n"),
1545 reserved_ratio, sb->s_r_blocks_count);
1546 }
1547 if (r_flag) {
1548 if (reserved_blocks >= sb->s_blocks_count/2) {
1549 com_err (program_name, 0,
1550 _("reserved blocks count is too big (%lu)"),
1551 reserved_blocks);
1552 exit (1);
1553 }
1554 sb->s_r_blocks_count = reserved_blocks;
1555 ext2fs_mark_super_dirty(fs);
1556 printf (_("Setting reserved blocks count to %lu\n"),
1557 reserved_blocks);
1558 }
1559 if (s_flag == 1) {
1560 if (sb->s_feature_ro_compat &
1561 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
1562 fputs(_("\nThe filesystem already has sparse "
1563 "superblocks.\n"), stderr);
1564 else {
1565 sb->s_feature_ro_compat |=
1566 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1567 sb->s_state &= ~EXT2_VALID_FS;
1568 ext2fs_mark_super_dirty(fs);
1569 printf(_("\nSparse superblock flag set. %s"),
1570 _(please_fsck));
1571 }
1572 }
1573 if (s_flag == 0) {
1574 fputs(_("\nClearing the sparse superflag not supported.\n"),
1575 stderr);
1576 exit(1);
1577 }
1578 if (T_flag) {
1579 sb->s_lastcheck = last_check_time;
1580 ext2fs_mark_super_dirty(fs);
1581 printf(_("Setting time filesystem last checked to %s\n"),
1582 ctime(&last_check_time));
1583 }
1584 if (u_flag) {
1585 sb->s_def_resuid = resuid;
1586 ext2fs_mark_super_dirty(fs);
1587 printf (_("Setting reserved blocks uid to %lu\n"), resuid);
1588 }
1589 if (L_flag) {
1590 if (strlen(new_label) > sizeof(sb->s_volume_name))
1591 fputs(_("Warning: label too long, truncating.\n"),
1592 stderr);
1593 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
1594 strncpy(sb->s_volume_name, new_label,
1595 sizeof(sb->s_volume_name));
1596 ext2fs_mark_super_dirty(fs);
1597 }
1598 if (M_flag) {
1599 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
1600 strncpy(sb->s_last_mounted, new_last_mounted,
1601 sizeof(sb->s_last_mounted));
1602 ext2fs_mark_super_dirty(fs);
1603 }
1604 if (mntopts_cmd)
1605 update_mntopts(fs, mntopts_cmd);
1606 if (features_cmd)
1607 update_feature_set(fs, features_cmd);
1608 if (extended_cmd)
1609 parse_extended_opts(fs, extended_cmd);
1610 if (journal_size || journal_device)
1611 add_journal(fs);
1612
1613 if (U_flag) {
1614 int set_csum = 0;
1615 dgrp_t i;
1616
1617 if (sb->s_feature_ro_compat &
1618 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1619 /*
1620 * Determine if the block group checksums are
1621 * correct so we know whether or not to set
1622 * them later on.
1623 */
1624 for (i = 0; i < fs->group_desc_count; i++)
1625 if (!ext2fs_group_desc_csum_verify(fs, i))
1626 break;
1627 if (i >= fs->group_desc_count)
1628 set_csum = 1;
1629 }
1630 if ((strcasecmp(new_UUID, "null") == 0) ||
1631 (strcasecmp(new_UUID, "clear") == 0)) {
1632 uuid_clear(sb->s_uuid);
1633 } else if (strcasecmp(new_UUID, "time") == 0) {
1634 uuid_generate_time(sb->s_uuid);
1635 } else if (strcasecmp(new_UUID, "random") == 0) {
1636 uuid_generate(sb->s_uuid);
1637 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
1638 com_err(program_name, 0, _("Invalid UUID format\n"));
1639 exit(1);
1640 }
1641 if (set_csum) {
1642 for (i = 0; i < fs->group_desc_count; i++)
1643 ext2fs_group_desc_csum_set(fs, i);
1644 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1645 }
1646 ext2fs_mark_super_dirty(fs);
1647 }
1648 if (I_flag) {
1649 if (mount_flags & EXT2_MF_MOUNTED) {
1650 fputs(_("The inode size may only be "
1651 "changed when the filesystem is "
1652 "unmounted.\n"), stderr);
1653 exit(1);
1654 }
1655 /*
1656 * We want to update group descriptor also
1657 * with the new free inode count
1658 */
1659 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1660 if (resize_inode(fs, new_inode_size)) {
1661 fputs(_("Error in resizing the inode size.\n"
1662 "Run e2undo to undo the "
1663 "file system changes. \n"), stderr);
1664 } else {
1665 printf (_("Setting inode size %lu\n"),
1666 new_inode_size);
1667 }
1668 }
1669
1670 if (l_flag)
1671 list_super (sb);
1672 if (stride_set) {
1673 sb->s_raid_stride = stride;
1674 ext2fs_mark_super_dirty(fs);
1675 printf(_("Setting stride size to %d\n"), stride);
1676 }
1677 if (stripe_width_set) {
1678 sb->s_raid_stripe_width = stripe_width;
1679 ext2fs_mark_super_dirty(fs);
1680 printf(_("Setting stripe width to %d\n"), stripe_width);
1681 }
1682 remove_error_table(&et_ext2_error_table);
1683 return (ext2fs_close (fs) ? 1 : 0);
1684 }
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