2 * tune2fs.c - Change the file system parameters on an ext2 file system
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)
8 * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
11 * This file may be redistributed under the terms of the GNU Public
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)
28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
29 #define _BSD_SOURCE /* for inclusion of strcasecmp() */
46 #include <sys/types.h>
50 #include "ext2fs/ext2_fs.h"
51 #include "ext2fs/ext2fs.h"
52 #include "et/com_err.h"
53 #include "uuid/uuid.h"
57 #include "blkid/blkid.h"
59 #include "../version.h"
60 #include "nls-enable.h"
62 const char *program_name = "tune2fs";
64 char *new_label, *new_last_mounted, *new_UUID;
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;
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;
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;
84 int journal_size, journal_flags;
87 static struct list_head blk_move_list;
90 struct list_head list;
96 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
98 void do_findfs(int argc, char **argv);
100 static void usage(void)
103 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
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);
116 static __u32 ok_features[3] = {
118 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
119 EXT2_FEATURE_COMPAT_DIR_INDEX,
121 EXT2_FEATURE_INCOMPAT_FILETYPE |
122 EXT3_FEATURE_INCOMPAT_EXTENTS |
123 EXT4_FEATURE_INCOMPAT_FLEX_BG,
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
133 static __u32 clear_ok_features[3] = {
135 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
136 EXT2_FEATURE_COMPAT_RESIZE_INODE |
137 EXT2_FEATURE_COMPAT_DIR_INDEX,
139 EXT2_FEATURE_INCOMPAT_FILETYPE |
140 EXT4_FEATURE_INCOMPAT_FLEX_BG,
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
150 * Remove an external journal from the filesystem
152 static void remove_journal_device(ext2_filsys fs)
157 journal_superblock_t *jsb;
160 int commit_remove_journal = 0;
164 commit_remove_journal = 1; /* force removal even if error */
166 uuid_unparse(fs->super->s_journal_uuid, buf);
167 journal_path = blkid_get_devname(NULL, "UUID", buf);
171 ext2fs_find_block_device(fs->super->s_journal_dev);
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;
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);
187 com_err(program_name, retval,
188 _("while trying to open external journal"));
189 goto no_valid_journal;
191 if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
192 fprintf(stderr, _("%s is not a journal device.\n"),
194 goto no_valid_journal;
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;
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;
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)
219 fputs(_("Filesystem's UUID not found on journal device.\n"),
221 commit_remove_journal = 1;
222 goto no_valid_journal;
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);
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;
236 commit_remove_journal = 1;
239 if (commit_remove_journal == 0) {
240 fputs(_("Journal NOT removed\n"), stderr);
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);
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)))
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++;
268 * Remove the journal inode from the filesystem
270 static void remove_journal_inode(ext2_filsys fs)
272 struct ext2_inode inode;
274 ino_t ino = fs->super->s_journal_inum;
276 retval = ext2fs_read_inode(fs, ino, &inode);
278 com_err(program_name, retval,
279 _("while reading journal inode"));
282 if (ino == EXT2_JOURNAL_INO) {
283 retval = ext2fs_read_bitmaps(fs);
285 com_err(program_name, retval,
286 _("while reading bitmaps"));
289 retval = ext2fs_block_iterate(fs, ino,
290 BLOCK_FLAG_READ_ONLY, NULL,
291 release_blocks_proc, NULL);
293 com_err(program_name, retval,
294 _("while clearing journal inode"));
297 memset(&inode, 0, sizeof(inode));
298 ext2fs_mark_bb_dirty(fs);
299 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
301 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
302 retval = ext2fs_write_inode(fs, ino, &inode);
304 com_err(program_name, retval,
305 _("while writing journal inode"));
308 fs->super->s_journal_inum = 0;
309 ext2fs_mark_super_dirty(fs);
313 * Update the default mount options
315 static void update_mntopts(ext2_filsys fs, char *mntopts)
317 struct ext2_super_block *sb = fs->super;
319 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
320 fprintf(stderr, _("Invalid mount option set: %s\n"),
324 ext2fs_mark_super_dirty(fs);
328 * Update the feature set as provided by the user.
330 static void update_feature_set(ext2_filsys fs, char *features)
332 struct ext2_super_block *sb = fs->super;
333 __u32 old_features[3];
335 unsigned int mask_err;
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)]))
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;
348 if (e2p_edit_feature2(features, &sb->s_feature_compat,
349 ok_features, clear_ok_features,
350 &type_err, &mask_err)) {
353 _("Invalid filesystem option set: %s\n"),
355 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
356 fprintf(stderr, _("Clearing filesystem feature '%s' "
358 e2p_feature2string(type_err &
359 E2P_FEATURE_TYPE_MASK,
362 fprintf(stderr, _("Setting filesystem feature '%s' "
364 e2p_feature2string(type_err, mask_err));
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);
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);
384 if (sb->s_journal_inum) {
385 remove_journal_inode(fs);
387 if (sb->s_journal_dev) {
388 remove_journal_device(fs);
392 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
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.
400 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
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);
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);
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);
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);
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"));
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);
461 * Add a journal to the filesystem.
463 static void add_journal(ext2_filsys fs)
465 unsigned long journal_blocks;
470 if (fs->super->s_feature_compat &
471 EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
472 fputs(_("The filesystem already has a journal.\n"), stderr);
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;
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);
489 com_err(program_name, retval,
490 _("\n\twhile trying to open journal on %s\n"),
494 printf(_("Creating journal on device %s: "),
498 retval = ext2fs_add_journal_device(fs, jfs);
501 com_err(program_name, retval,
502 _("while adding filesystem to journal on %s"),
506 fputs(_("done\n"), stdout);
507 } else if (journal_size) {
508 fputs(_("Creating journal inode: "), stdout);
510 journal_blocks = figure_journal_size(journal_size, fs);
512 retval = ext2fs_add_journal_inode(fs, journal_blocks,
515 fprintf(stderr, "\n");
516 com_err(program_name, retval,
517 _("\n\twhile trying to create journal file"));
520 fputs(_("done\n"), stdout);
522 * If the filesystem wasn't mounted, we need to force
523 * the block group descriptors out.
525 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
526 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
528 print_check_message(fs);
533 free(journal_device);
538 static void parse_e2label_options(int argc, char ** argv)
540 if ((argc < 2) || (argc > 3)) {
541 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
544 io_options = strchr(argv[1], '?');
547 device_name = blkid_get_devname(NULL, argv[1], NULL);
549 com_err("e2label", 0, _("Unable to resolve '%s'"),
553 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
555 open_flag |= EXT2_FLAG_RW;
562 static time_t parse_time(char *str)
566 if (strcmp(str, "now") == 0) {
569 memset(&ts, 0, sizeof(ts));
571 strptime(str, "%Y%m%d%H%M%S", &ts);
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);
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)
582 if (ts.tm_mday == 0) {
583 com_err(program_name, 0,
584 _("Couldn't parse date/time specifier: %s"),
589 return (mktime(&ts));
592 static void parse_tune2fs_options(int argc, char **argv)
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)
605 max_mount_count = strtol(optarg, &tmp, 0);
606 if (*tmp || max_mount_count > 16000) {
607 com_err(program_name, 0,
608 _("bad mounts count - %s"),
612 if (max_mount_count == 0)
613 max_mount_count = -1;
615 open_flag = EXT2_FLAG_RW;
618 mount_count = strtoul(optarg, &tmp, 0);
619 if (*tmp || mount_count > 16000) {
620 com_err(program_name, 0,
621 _("bad mounts count - %s"),
626 open_flag = EXT2_FLAG_RW;
629 if (strcmp(optarg, "continue") == 0)
630 errors = EXT2_ERRORS_CONTINUE;
631 else if (strcmp(optarg, "remount-ro") == 0)
632 errors = EXT2_ERRORS_RO;
633 else if (strcmp(optarg, "panic") == 0)
634 errors = EXT2_ERRORS_PANIC;
636 com_err(program_name, 0,
637 _("bad error behavior - %s"),
642 open_flag = EXT2_FLAG_RW;
645 extended_cmd = optarg;
646 open_flag |= EXT2_FLAG_RW;
648 case 'f': /* Force */
652 resgid = strtoul(optarg, &tmp, 0);
654 gr = getgrnam(optarg);
663 com_err(program_name, 0,
664 _("bad gid/group name - %s"),
669 open_flag = EXT2_FLAG_RW;
672 interval = strtoul(optarg, &tmp, 0);
685 case 'M': /* months! */
686 interval *= 86400 * 30;
690 case 'W': /* weeks */
691 interval *= 86400 * 7;
696 com_err(program_name, 0,
697 _("bad interval - %s"), optarg);
701 open_flag = EXT2_FLAG_RW;
706 open_flag = EXT2_FLAG_RW;
709 parse_journal_opts(optarg);
710 open_flag = EXT2_FLAG_RW;
718 open_flag |= EXT2_FLAG_RW |
719 EXT2_FLAG_JOURNAL_DEV_OK;
722 reserved_ratio = strtod(optarg, &tmp);
723 if (*tmp || reserved_ratio > 50) {
724 com_err(program_name, 0,
725 _("bad reserved block ratio - %s"),
730 open_flag = EXT2_FLAG_RW;
733 new_last_mounted = optarg;
735 open_flag = EXT2_FLAG_RW;
739 com_err(program_name, 0,
740 _("-o may only be specified once"));
743 mntopts_cmd = optarg;
744 open_flag = EXT2_FLAG_RW;
749 com_err(program_name, 0,
750 _("-O may only be specified once"));
753 features_cmd = optarg;
754 open_flag = EXT2_FLAG_RW;
757 reserved_blocks = strtoul(optarg, &tmp, 0);
759 com_err(program_name, 0,
760 _("bad reserved blocks count - %s"),
765 open_flag = EXT2_FLAG_RW;
767 case 's': /* Deprecated */
768 s_flag = atoi(optarg);
769 open_flag = EXT2_FLAG_RW;
773 last_check_time = parse_time(optarg);
774 open_flag = EXT2_FLAG_RW;
777 resuid = strtoul(optarg, &tmp, 0);
779 pw = getpwnam(optarg);
788 com_err(program_name, 0,
789 _("bad uid/user name - %s"),
794 open_flag = EXT2_FLAG_RW;
799 open_flag = EXT2_FLAG_RW |
800 EXT2_FLAG_JOURNAL_DEV_OK;
803 new_inode_size = strtoul(optarg, &tmp, 0);
805 com_err(program_name, 0,
806 _("bad inode size - %s"),
810 if (!((new_inode_size &
811 (new_inode_size - 1)) == 0)) {
812 com_err(program_name, 0,
813 _("Inode size must be a "
818 open_flag = EXT2_FLAG_RW;
824 if (optind < argc - 1 || optind == argc)
826 if (!open_flag && !l_flag)
828 io_options = strchr(argv[optind], '?');
831 device_name = blkid_get_devname(NULL, argv[optind], NULL);
833 com_err("tune2fs", 0, _("Unable to resolve '%s'"),
839 void do_findfs(int argc, char **argv)
844 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
845 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
848 dev = blkid_get_devname(NULL, argv[1], NULL);
850 com_err("findfs", 0, _("Unable to resolve '%s'"),
858 static void parse_extended_opts(ext2_filsys fs, const char *opts)
860 char *buf, *token, *next, *p, *arg;
868 _("Couldn't allocate memory to parse options!\n"));
872 for (token = buf; token && *token; token = next) {
873 p = strchr(token, ',');
879 arg = strchr(token, '=');
884 if (!strcmp(token, "test_fs")) {
885 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
886 printf("Setting test filesystem flag\n");
887 ext2fs_mark_super_dirty(fs);
888 } else if (!strcmp(token, "^test_fs")) {
889 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
890 printf("Clearing test filesystem flag\n");
891 ext2fs_mark_super_dirty(fs);
892 } else if (strcmp(token, "stride") == 0) {
897 stride = strtoul(arg, &p, 0);
898 if (*p || (stride == 0)) {
900 _("Invalid RAID stride: %s\n"),
906 } else if (strcmp(token, "stripe-width") == 0 ||
907 strcmp(token, "stripe_width") == 0) {
912 stripe_width = strtoul(arg, &p, 0);
913 if (*p || (stripe_width == 0)) {
915 _("Invalid RAID stripe-width: %s\n"),
920 stripe_width_set = 1;
921 } else if (strcmp(token, "hash_alg") == 0 ||
922 strcmp(token, "hash-alg") == 0) {
927 hash_alg = e2p_string2hash(arg);
930 _("Invalid hash algorithm: %s\n"),
935 fs->super->s_def_hash_version = hash_alg;
936 printf(_("Setting default hash algorithm "
939 ext2fs_mark_super_dirty(fs);
944 fprintf(stderr, _("\nBad options specified.\n\n"
945 "Extended options are separated by commas, "
946 "and may take an argument which\n"
947 "\tis set off by an equals ('=') sign.\n\n"
948 "Valid extended options are:\n"
949 "\tstride=<RAID per-disk chunk size in blocks>\n"
950 "\tstripe_width=<RAID stride*data disks in blocks>\n"
951 "\thash_alg=<hash algorithm>\n"
961 * Fill in two bitmaps that we need to to control the inode resizing
962 * process. The first is the set of blocks that must be moved, and
963 * the second is the set of blocks which are allocation bitmap blocks
964 * and must be treated specially.
966 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
967 ext2fs_block_bitmap bmap,
968 ext2fs_block_bitmap metadata_bmap)
971 blk_t j, needed_blocks = 0;
972 blk_t i_bmap, b_bmap;
973 blk_t start_blk, end_blk;
976 for (i = 0; i < fs->group_desc_count; i++) {
977 b_bmap = fs->group_desc[i].bg_block_bitmap;
978 ext2fs_mark_block_bitmap(metadata_bmap, b_bmap);
979 i_bmap = fs->group_desc[i].bg_inode_bitmap;
980 ext2fs_mark_block_bitmap(metadata_bmap, i_bmap);
982 start_blk = fs->group_desc[i].bg_inode_table +
983 fs->inode_blocks_per_group;
985 end_blk = fs->group_desc[i].bg_inode_table +
986 new_ino_blks_per_grp;
989 for (j = start_blk; j < end_blk; j++) {
990 if (ext2fs_test_block_bitmap(fs->block_map, j)) {
992 * What happens if the block is marked
995 ext2fs_mark_block_bitmap(bmap, j);
999 * We are going to use this block for
1000 * inode table. So mark them used.
1002 ext2fs_mark_block_bitmap(fs->block_map, j);
1004 if ((j == i_bmap) || (j == b_bmap))
1007 if (num <= fs->group_desc[i].bg_free_blocks_count)
1011 if (needed_blocks > fs->super->s_free_blocks_count)
1017 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap,
1018 ext2fs_block_bitmap metadata_bmap)
1022 blk_t blk, new_blk, goal;
1023 struct blk_move *bmv;
1026 retval = ext2fs_get_mem(fs->blocksize, &buf);
1030 for (new_blk = blk = fs->super->s_first_data_block;
1031 blk < fs->super->s_blocks_count; blk++) {
1032 if (!ext2fs_test_block_bitmap(bmap, blk))
1036 * If the block is a bitmap block, find a new block in
1037 * the same block group.
1039 if (ext2fs_test_block_bitmap(metadata_bmap, blk)) {
1040 group = ext2fs_group_of_blk(fs, blk);
1041 goal = ext2fs_group_first_block(fs, group);
1045 retval = ext2fs_new_block(fs, goal, NULL, &new_blk);
1049 /* Mark this block as allocated */
1050 ext2fs_mark_block_bitmap(fs->block_map, new_blk);
1052 /* Add it to block move list */
1053 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1058 bmv->new_loc = new_blk;
1060 list_add(&(bmv->list), &blk_move_list);
1062 retval = io_channel_read_blk(fs->io, blk, 1, buf);
1066 retval = io_channel_write_blk(fs->io, new_blk, 1, buf);
1072 ext2fs_free_mem(&buf);
1076 static blk_t translate_block(blk_t blk)
1078 struct list_head *entry;
1079 struct blk_move *bmv;
1081 list_for_each(entry, &blk_move_list) {
1082 bmv = list_entry(entry, struct blk_move, list);
1083 if (bmv->old_loc == blk)
1084 return bmv->new_loc;
1090 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1092 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1093 blk_t ref_block EXT2FS_ATTR((unused)),
1094 int ref_offset EXT2FS_ATTR((unused)),
1099 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
1101 if (!ext2fs_test_block_bitmap(bmap, *block_nr))
1103 new_blk = translate_block(*block_nr);
1105 *block_nr = new_blk;
1107 * This will force the ext2fs_write_inode in the iterator
1109 ret |= BLOCK_CHANGED;
1115 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1117 errcode_t retval = 0;
1120 char *block_buf = 0;
1121 struct ext2_inode inode;
1122 ext2_inode_scan scan = NULL;
1124 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1128 retval = ext2fs_open_inode_scan(fs, 0, &scan);
1133 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1140 if (inode.i_links_count == 0)
1141 continue; /* inode not in use */
1144 * If we end up modifying the journal inode
1145 * the sb->s_jnl_blocks will differ. But a
1146 * subsequent e2fsck fixes that.
1147 * Do we need to fix this ??
1150 if (inode.i_file_acl &&
1151 ext2fs_test_block_bitmap(bmap, inode.i_file_acl)) {
1152 blk = translate_block(inode.i_file_acl);
1156 inode.i_file_acl = blk;
1159 * Write the inode to disk so that inode table
1162 retval = ext2fs_write_inode(fs, ino, &inode);
1167 if (!ext2fs_inode_has_valid_blocks(&inode))
1170 retval = ext2fs_block_iterate2(fs, ino, 0, block_buf,
1171 process_block, bmap);
1178 ext2fs_free_mem(&block_buf);
1184 * We need to scan for inode and block bitmaps that may need to be
1185 * moved. This can take place if the filesystem was formatted for
1186 * RAID arrays using the mke2fs's extended option "stride".
1188 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1193 for (i = 0; i < fs->group_desc_count; i++) {
1194 blk = fs->group_desc[i].bg_block_bitmap;
1195 if (ext2fs_test_block_bitmap(bmap, blk)) {
1196 new_blk = translate_block(blk);
1199 fs->group_desc[i].bg_block_bitmap = new_blk;
1202 blk = fs->group_desc[i].bg_inode_bitmap;
1203 if (ext2fs_test_block_bitmap(bmap, blk)) {
1204 new_blk = translate_block(blk);
1207 fs->group_desc[i].bg_inode_bitmap = new_blk;
1214 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1219 int new_ino_blks_per_grp;
1221 char *old_itable = NULL, *new_itable = NULL;
1222 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1223 unsigned long old_ino_size;
1224 int old_itable_size, new_itable_size;
1226 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1227 old_ino_size = EXT2_INODE_SIZE(fs->super);
1229 new_ino_blks_per_grp = ext2fs_div_ceil(
1230 EXT2_INODES_PER_GROUP(fs->super) *
1234 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1236 retval = ext2fs_get_mem(old_itable_size, &old_itable);
1240 retval = ext2fs_get_mem(new_itable_size, &new_itable);
1244 tmp_old_itable = old_itable;
1245 tmp_new_itable = new_itable;
1247 for (i = 0; i < fs->group_desc_count; i++) {
1248 blk = fs->group_desc[i].bg_inode_table;
1249 retval = io_channel_read_blk(fs->io, blk,
1250 fs->inode_blocks_per_group, old_itable);
1254 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1255 memcpy(new_itable, old_itable, old_ino_size);
1257 memset(new_itable+old_ino_size, 0,
1258 new_ino_size - old_ino_size);
1260 new_itable += new_ino_size;
1261 old_itable += old_ino_size;
1264 /* reset the pointer */
1265 old_itable = tmp_old_itable;
1266 new_itable = tmp_new_itable;
1268 retval = io_channel_write_blk(fs->io, blk,
1269 new_ino_blks_per_grp, new_itable);
1274 /* Update the meta data */
1275 fs->inode_blocks_per_group = new_ino_blks_per_grp;
1276 fs->super->s_inode_size = new_ino_size;
1280 ext2fs_free_mem(&old_itable);
1283 ext2fs_free_mem(&new_itable);
1288 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1292 unsigned int group = 0;
1293 unsigned int count = 0;
1298 * First calculate the block statistics
1300 for (blk = fs->super->s_first_data_block;
1301 blk < fs->super->s_blocks_count; blk++) {
1302 if (!ext2fs_fast_test_block_bitmap(fs->block_map, blk)) {
1307 if ((count == fs->super->s_blocks_per_group) ||
1308 (blk == fs->super->s_blocks_count-1)) {
1309 fs->group_desc[group++].bg_free_blocks_count =
1315 fs->super->s_free_blocks_count = total_free;
1318 * Next, calculate the inode statistics
1325 /* Protect loop from wrap-around if s_inodes_count maxed */
1326 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1327 if (!ext2fs_fast_test_inode_bitmap(fs->inode_map, ino)) {
1332 if ((count == fs->super->s_inodes_per_group) ||
1333 (ino == fs->super->s_inodes_count)) {
1334 fs->group_desc[group++].bg_free_inodes_count =
1340 fs->super->s_free_inodes_count = total_free;
1341 ext2fs_mark_super_dirty(fs);
1345 #define list_for_each_safe(pos, pnext, head) \
1346 for (pos = (head)->next, pnext = pos->next; pos != (head); \
1347 pos = pnext, pnext = pos->next)
1349 static void free_blk_move_list(void)
1351 struct list_head *entry, *tmp;
1352 struct blk_move *bmv;
1354 list_for_each_safe(entry, tmp, &blk_move_list) {
1355 bmv = list_entry(entry, struct blk_move, list);
1357 ext2fs_free_mem(&bmv);
1362 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1365 int new_ino_blks_per_grp;
1366 ext2fs_block_bitmap bmap, metadata_bmap;
1368 ext2fs_read_inode_bitmap(fs);
1369 ext2fs_read_block_bitmap(fs);
1370 INIT_LIST_HEAD(&blk_move_list);
1373 new_ino_blks_per_grp = ext2fs_div_ceil(
1374 EXT2_INODES_PER_GROUP(fs->super)*
1378 /* We may change the file system.
1379 * Mark the file system as invalid so that
1380 * the user is prompted to run fsck.
1382 fs->super->s_state &= ~EXT2_VALID_FS;
1384 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1389 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1394 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap,
1399 retval = move_block(fs, bmap, metadata_bmap);
1403 retval = inode_scan_and_fix(fs, bmap);
1407 retval = group_desc_scan_and_fix(fs, bmap);
1411 retval = expand_inode_table(fs, new_size);
1415 ext2fs_calculate_summary_stats(fs);
1417 fs->super->s_state |= EXT2_VALID_FS;
1418 /* mark super block and block bitmap as dirty */
1419 ext2fs_mark_super_dirty(fs);
1420 ext2fs_mark_bb_dirty(fs);
1423 free_blk_move_list();
1424 ext2fs_free_block_bitmap(bmap);
1429 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1431 errcode_t retval = 0;
1432 const char *tdb_dir;
1433 char tdb_file[PATH_MAX];
1434 char *dev_name, *tmp_name;
1438 * Configuration via a conf file would be
1441 profile_get_string(profile, "scratch_files",
1445 tmp_name = strdup(name);
1446 dev_name = basename(tmp_name);
1448 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1450 tdb_dir = "/var/lib/e2fsprogs";
1452 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1453 access(tdb_dir, W_OK))
1456 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1458 if (!access(tdb_file, F_OK)) {
1459 if (unlink(tdb_file) < 0) {
1461 com_err(program_name, retval,
1462 _("while trying to delete %s"),
1468 set_undo_io_backing_manager(*io_ptr);
1469 *io_ptr = undo_io_manager;
1470 set_undo_io_backup_file(tdb_file);
1471 printf(_("To undo the tune2fs operation please run "
1472 "the command\n e2undo %s %s\n\n"),
1478 int main(int argc, char **argv)
1482 struct ext2_super_block *sb;
1483 io_manager io_ptr, io_ptr_orig = NULL;
1486 setlocale(LC_MESSAGES, "");
1487 setlocale(LC_CTYPE, "");
1488 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1489 textdomain(NLS_CAT_NAME);
1492 program_name = *argv;
1493 add_error_table(&et_ext2_error_table);
1495 if (strcmp(get_progname(argv[0]), "findfs") == 0)
1496 do_findfs(argc, argv);
1497 if (strcmp(get_progname(argv[0]), "e2label") == 0)
1498 parse_e2label_options(argc, argv);
1500 parse_tune2fs_options(argc, argv);
1502 #ifdef CONFIG_TESTIO_DEBUG
1503 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
1504 io_ptr = test_io_manager;
1505 test_io_backing_manager = unix_io_manager;
1508 io_ptr = unix_io_manager;
1511 retval = ext2fs_open2(device_name, io_options, open_flag,
1514 com_err(program_name, retval,
1515 _("while trying to open %s"),
1518 _("Couldn't find valid filesystem superblock.\n"));
1522 if (I_flag && !io_ptr_orig) {
1524 * Check the inode size is right so we can issue an
1525 * error message and bail before setting up the tdb
1528 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1529 fprintf(stderr, _("The inode size is already %d\n"),
1533 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1534 fprintf(stderr, _("Shrinking the inode size is "
1535 "not supported\n"));
1540 * If inode resize is requested use the
1543 io_ptr_orig = io_ptr;
1544 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1547 if (io_ptr != io_ptr_orig) {
1554 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1557 /* For e2label emulation */
1558 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
1560 remove_error_table(&et_ext2_error_table);
1564 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
1566 com_err("ext2fs_check_if_mount", retval,
1567 _("while determining whether %s is mounted."),
1571 /* Normally we only need to write out the superblock */
1572 fs->flags |= EXT2_FLAG_SUPER_ONLY;
1575 sb->s_max_mnt_count = max_mount_count;
1576 ext2fs_mark_super_dirty(fs);
1577 printf(_("Setting maximal mount count to %d\n"),
1581 sb->s_mnt_count = mount_count;
1582 ext2fs_mark_super_dirty(fs);
1583 printf(_("Setting current mount count to %d\n"), mount_count);
1586 sb->s_errors = errors;
1587 ext2fs_mark_super_dirty(fs);
1588 printf(_("Setting error behavior to %d\n"), errors);
1591 sb->s_def_resgid = resgid;
1592 ext2fs_mark_super_dirty(fs);
1593 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
1596 sb->s_checkinterval = interval;
1597 ext2fs_mark_super_dirty(fs);
1598 printf(_("Setting interval between checks to %lu seconds\n"),
1602 sb->s_r_blocks_count = (unsigned int) (reserved_ratio *
1603 sb->s_blocks_count / 100.0);
1604 ext2fs_mark_super_dirty(fs);
1605 printf(_("Setting reserved blocks percentage to %g%% "
1607 reserved_ratio, sb->s_r_blocks_count);
1610 if (reserved_blocks >= sb->s_blocks_count/2) {
1611 com_err(program_name, 0,
1612 _("reserved blocks count is too big (%lu)"),
1616 sb->s_r_blocks_count = reserved_blocks;
1617 ext2fs_mark_super_dirty(fs);
1618 printf(_("Setting reserved blocks count to %lu\n"),
1622 if (sb->s_feature_ro_compat &
1623 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
1624 fputs(_("\nThe filesystem already has sparse "
1625 "superblocks.\n"), stderr);
1627 sb->s_feature_ro_compat |=
1628 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1629 sb->s_state &= ~EXT2_VALID_FS;
1630 ext2fs_mark_super_dirty(fs);
1631 printf(_("\nSparse superblock flag set. %s"),
1636 fputs(_("\nClearing the sparse superflag not supported.\n"),
1641 sb->s_lastcheck = last_check_time;
1642 ext2fs_mark_super_dirty(fs);
1643 printf(_("Setting time filesystem last checked to %s\n"),
1644 ctime(&last_check_time));
1647 sb->s_def_resuid = resuid;
1648 ext2fs_mark_super_dirty(fs);
1649 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
1652 if (strlen(new_label) > sizeof(sb->s_volume_name))
1653 fputs(_("Warning: label too long, truncating.\n"),
1655 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
1656 strncpy(sb->s_volume_name, new_label,
1657 sizeof(sb->s_volume_name));
1658 ext2fs_mark_super_dirty(fs);
1661 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
1662 strncpy(sb->s_last_mounted, new_last_mounted,
1663 sizeof(sb->s_last_mounted));
1664 ext2fs_mark_super_dirty(fs);
1667 update_mntopts(fs, mntopts_cmd);
1669 update_feature_set(fs, features_cmd);
1671 parse_extended_opts(fs, extended_cmd);
1672 if (journal_size || journal_device)
1679 if (sb->s_feature_ro_compat &
1680 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1682 * Determine if the block group checksums are
1683 * correct so we know whether or not to set
1686 for (i = 0; i < fs->group_desc_count; i++)
1687 if (!ext2fs_group_desc_csum_verify(fs, i))
1689 if (i >= fs->group_desc_count)
1692 if ((strcasecmp(new_UUID, "null") == 0) ||
1693 (strcasecmp(new_UUID, "clear") == 0)) {
1694 uuid_clear(sb->s_uuid);
1695 } else if (strcasecmp(new_UUID, "time") == 0) {
1696 uuid_generate_time(sb->s_uuid);
1697 } else if (strcasecmp(new_UUID, "random") == 0) {
1698 uuid_generate(sb->s_uuid);
1699 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
1700 com_err(program_name, 0, _("Invalid UUID format\n"));
1704 for (i = 0; i < fs->group_desc_count; i++)
1705 ext2fs_group_desc_csum_set(fs, i);
1706 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1708 ext2fs_mark_super_dirty(fs);
1711 if (mount_flags & EXT2_MF_MOUNTED) {
1712 fputs(_("The inode size may only be "
1713 "changed when the filesystem is "
1714 "unmounted.\n"), stderr);
1717 if (fs->super->s_feature_incompat &
1718 EXT4_FEATURE_INCOMPAT_FLEX_BG) {
1719 fputs(_("Changing the inode size not supported for "
1720 "filesystems with the flex_bg\n"
1721 "feature enabled.\n"),
1726 * We want to update group descriptor also
1727 * with the new free inode count
1729 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1730 if (resize_inode(fs, new_inode_size)) {
1731 fputs(_("Error in resizing the inode size.\n"
1732 "Run e2undo to undo the "
1733 "file system changes. \n"), stderr);
1735 printf(_("Setting inode size %lu\n"),
1743 sb->s_raid_stride = stride;
1744 ext2fs_mark_super_dirty(fs);
1745 printf(_("Setting stride size to %d\n"), stride);
1747 if (stripe_width_set) {
1748 sb->s_raid_stripe_width = stripe_width;
1749 ext2fs_mark_super_dirty(fs);
1750 printf(_("Setting stripe width to %d\n"), stripe_width);
1752 remove_error_table(&et_ext2_error_table);
1753 return (ext2fs_close(fs) ? 1 : 0);