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() */
44 #include <strings.h> /* for strcasecmp() */
46 #define _BSD_SOURCE /* for inclusion of strcasecmp() via <string.h> */
47 #define _DEFAULT_SOURCE /* since glibc 2.20 _BSD_SOURCE is deprecated */
52 #include <sys/types.h>
56 #include "ext2fs/ext2_fs.h"
57 #include "ext2fs/ext2fs.h"
58 #include "ext2fs/kernel-jbd.h"
59 #include "et/com_err.h"
60 #include "support/plausible.h"
61 #include "support/quotaio.h"
62 #include "uuid/uuid.h"
65 #include "blkid/blkid.h"
67 #include "../version.h"
68 #include "support/nls-enable.h"
70 #define QOPT_ENABLE (1)
71 #define QOPT_DISABLE (-1)
73 extern int ask_yn(const char *string, int def);
75 const char *program_name = "tune2fs";
77 char *new_label, *new_last_mounted, *new_UUID;
79 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
80 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
83 static time_t last_check_time;
84 static int print_label;
85 static int max_mount_count, mount_count, mount_flags;
86 static unsigned long interval;
87 static blk64_t reserved_blocks;
88 static double reserved_ratio;
89 static unsigned long resgid, resuid;
90 static unsigned short errors;
92 static char *features_cmd;
93 static char *mntopts_cmd;
94 static int stride, stripe_width;
95 static int stride_set, stripe_width_set;
96 static char *extended_cmd;
97 static unsigned long new_inode_size;
98 static char *ext_mount_opts;
99 static int quota_enable[MAXQUOTAS];
100 static int rewrite_checksums;
101 static int feature_64bit;
102 static int fsck_requested;
103 static char *undo_file;
104 int enabling_casefold;
106 int journal_size, journal_fc_size, journal_flags;
107 char *journal_device;
108 static blk64_t journal_location = ~0LL;
110 static struct list_head blk_move_list;
113 struct list_head list;
118 errcode_t ext2fs_run_ext3_journal(ext2_filsys *fs);
120 static const char *fsck_explain = N_("\nThis operation requires a freshly checked filesystem.\n");
122 static const char *please_fsck = N_("Please run e2fsck -f on the filesystem.\n");
123 static const char *please_dir_fsck =
124 N_("Please run e2fsck -fD on the filesystem.\n");
126 #ifdef CONFIG_BUILD_FINDFS
127 void do_findfs(int argc, char **argv);
130 #ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jbd-debug */
131 int journal_enable_debug = -1;
134 static void usage(void)
137 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] [-f] "
139 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
140 "\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n"
141 "\t[-r reserved_blocks_count] [-u user] [-C mount_count]\n"
142 "\t[-L volume_label] [-M last_mounted_dir]\n"
143 "\t[-O [^]feature[,...]] [-Q quota_options]\n"
144 "\t[-E extended-option[,...]] [-T last_check_time] "
145 "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
150 static __u32 ok_features[3] = {
152 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
153 EXT2_FEATURE_COMPAT_DIR_INDEX |
154 EXT4_FEATURE_COMPAT_FAST_COMMIT |
155 EXT4_FEATURE_COMPAT_STABLE_INODES,
157 EXT2_FEATURE_INCOMPAT_FILETYPE |
158 EXT3_FEATURE_INCOMPAT_EXTENTS |
159 EXT4_FEATURE_INCOMPAT_FLEX_BG |
160 EXT4_FEATURE_INCOMPAT_EA_INODE|
161 EXT4_FEATURE_INCOMPAT_MMP |
162 EXT4_FEATURE_INCOMPAT_64BIT |
163 EXT4_FEATURE_INCOMPAT_ENCRYPT |
164 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
165 EXT4_FEATURE_INCOMPAT_LARGEDIR |
166 EXT4_FEATURE_INCOMPAT_CASEFOLD,
168 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
169 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
170 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
171 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
172 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
173 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
174 EXT4_FEATURE_RO_COMPAT_QUOTA |
175 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
176 EXT4_FEATURE_RO_COMPAT_READONLY |
177 EXT4_FEATURE_RO_COMPAT_PROJECT |
178 EXT4_FEATURE_RO_COMPAT_VERITY
181 static __u32 clear_ok_features[3] = {
183 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
184 EXT2_FEATURE_COMPAT_RESIZE_INODE |
185 EXT2_FEATURE_COMPAT_DIR_INDEX |
186 EXT4_FEATURE_COMPAT_FAST_COMMIT,
188 EXT2_FEATURE_INCOMPAT_FILETYPE |
189 EXT4_FEATURE_INCOMPAT_FLEX_BG |
190 EXT4_FEATURE_INCOMPAT_MMP |
191 EXT4_FEATURE_INCOMPAT_64BIT |
192 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
194 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
195 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
196 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
197 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
198 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
199 EXT4_FEATURE_RO_COMPAT_QUOTA |
200 EXT4_FEATURE_RO_COMPAT_PROJECT |
201 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
202 EXT4_FEATURE_RO_COMPAT_READONLY
206 * Try to get journal super block if any
208 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
211 journal_superblock_t *jsb;
213 if (!ext2fs_has_feature_journal_dev(jfs->super)) {
214 return EXT2_ET_UNSUPP_FEATURE;
217 /* Get the journal superblock */
218 if ((retval = io_channel_read_blk64(jfs->io,
219 ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
220 com_err(program_name, retval, "%s",
221 _("while reading journal superblock"));
225 jsb = (journal_superblock_t *) buf;
226 if ((jsb->s_header.h_magic != (unsigned)ntohl(JBD2_MAGIC_NUMBER)) ||
227 (jsb->s_header.h_blocktype != (unsigned)ntohl(JBD2_SUPERBLOCK_V2))) {
228 fputs(_("Journal superblock not found!\n"), stderr);
229 return EXT2_ET_BAD_MAGIC;
235 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JBD2_USERS_SIZE],
239 for (i = 0; i < nr_users; i++) {
240 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
241 return &s_users[i * UUID_SIZE];
248 * Remove an external journal from the filesystem
250 static int remove_journal_device(ext2_filsys fs)
254 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
255 journal_superblock_t *jsb;
258 int commit_remove_journal = 0;
262 commit_remove_journal = 1; /* force removal even if error */
264 uuid_unparse(fs->super->s_journal_uuid, buf);
265 journal_path = blkid_get_devname(NULL, "UUID", buf);
269 ext2fs_find_block_device(fs->super->s_journal_dev);
271 goto no_valid_journal;
274 #ifdef CONFIG_TESTIO_DEBUG
275 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
276 io_ptr = test_io_manager;
277 test_io_backing_manager = unix_io_manager;
280 io_ptr = unix_io_manager;
281 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
282 EXT2_FLAG_JOURNAL_DEV_OK, 0,
283 fs->blocksize, io_ptr, &jfs);
285 com_err(program_name, retval, "%s",
286 _("while trying to open external journal"));
287 goto no_valid_journal;
290 if ((retval = get_journal_sb(jfs, buf))) {
291 if (retval == EXT2_ET_UNSUPP_FEATURE)
292 fprintf(stderr, _("%s is not a journal device.\n"),
294 goto no_valid_journal;
297 jsb = (journal_superblock_t *) buf;
298 /* Find the filesystem UUID */
299 nr_users = ntohl(jsb->s_nr_users);
300 if (nr_users > JBD2_USERS_MAX) {
301 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
302 "is too high (%d).\n"), nr_users);
303 commit_remove_journal = 1;
304 goto no_valid_journal;
307 if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
308 fputs(_("Filesystem's UUID not found on journal device.\n"),
310 commit_remove_journal = 1;
311 goto no_valid_journal;
314 for (i = 0; i < nr_users; i++)
315 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
316 jsb->s_nr_users = htonl(nr_users);
318 /* Write back the journal superblock */
319 retval = io_channel_write_blk64(jfs->io,
320 ext2fs_journal_sb_start(fs->blocksize),
321 -SUPERBLOCK_SIZE, buf);
323 com_err(program_name, retval,
324 "while writing journal superblock.");
325 goto no_valid_journal;
328 commit_remove_journal = 1;
331 if (commit_remove_journal == 0) {
332 fputs(_("Cannot locate journal device. It was NOT removed\n"
333 "Use -f option to remove missing journal device.\n"),
337 fs->super->s_journal_dev = 0;
338 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
339 uuid_clear(fs->super->s_journal_uuid);
340 ext2fs_mark_super_dirty(fs);
341 fputs(_("Journal removed\n"), stdout);
347 /* Helper function for remove_journal_inode */
348 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
349 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
350 blk64_t ref_block EXT2FS_ATTR((unused)),
351 int ref_offset EXT2FS_ATTR((unused)),
352 void *private EXT2FS_ATTR((unused)))
358 ext2fs_unmark_block_bitmap2(fs->block_map, block);
359 group = ext2fs_group_of_blk2(fs, block);
360 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
361 ext2fs_group_desc_csum_set(fs, group);
362 ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
367 * Remove the journal inode from the filesystem
369 static errcode_t remove_journal_inode(ext2_filsys fs)
371 struct ext2_inode inode;
373 ext2_ino_t ino = fs->super->s_journal_inum;
375 retval = ext2fs_read_inode(fs, ino, &inode);
377 com_err(program_name, retval, "%s",
378 _("while reading journal inode"));
381 if (ino == EXT2_JOURNAL_INO) {
382 retval = ext2fs_read_bitmaps(fs);
384 com_err(program_name, retval, "%s",
385 _("while reading bitmaps"));
388 retval = ext2fs_block_iterate3(fs, ino,
389 BLOCK_FLAG_READ_ONLY, NULL,
390 release_blocks_proc, NULL);
392 com_err(program_name, retval, "%s",
393 _("while clearing journal inode"));
396 fs->super->s_overhead_clusters -=
397 EXT2FS_NUM_B2C(fs, EXT2_I_SIZE(&inode) / fs->blocksize);
398 memset(&inode, 0, sizeof(inode));
399 ext2fs_mark_bb_dirty(fs);
400 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
402 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
403 retval = ext2fs_write_inode(fs, ino, &inode);
405 com_err(program_name, retval, "%s",
406 _("while writing journal inode"));
409 fs->super->s_journal_inum = 0;
410 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
411 ext2fs_mark_super_dirty(fs);
417 * Update the default mount options
419 static int update_mntopts(ext2_filsys fs, char *mntopts)
421 struct ext2_super_block *sb = fs->super;
423 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
424 fprintf(stderr, _("Invalid mount option set: %s\n"),
428 ext2fs_mark_super_dirty(fs);
433 static int check_fsck_needed(ext2_filsys fs, const char *prompt)
435 /* Refuse to modify anything but a freshly checked valid filesystem. */
436 if (!(fs->super->s_state & EXT2_VALID_FS) ||
437 (fs->super->s_state & EXT2_ERROR_FS) ||
438 (fs->super->s_lastcheck < fs->super->s_mtime)) {
439 puts(_(fsck_explain));
440 puts(_(please_fsck));
441 if (mount_flags & EXT2_MF_READONLY)
442 printf("%s", _("(and reboot afterwards!)\n"));
446 /* Give the admin a few seconds to bail out of a dangerous op. */
447 if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
456 static void request_dir_fsck_afterwards(ext2_filsys fs)
458 static int requested;
463 fs->super->s_state &= ~EXT2_VALID_FS;
464 puts(_(fsck_explain));
465 puts(_(please_dir_fsck));
466 if (mount_flags & EXT2_MF_READONLY)
467 printf("%s", _("(and reboot afterwards!)\n"));
470 static void request_fsck_afterwards(ext2_filsys fs)
472 static int requested = 0;
477 fs->super->s_state &= ~EXT2_VALID_FS;
478 printf("\n%s\n", _(please_fsck));
479 if (mount_flags & EXT2_MF_READONLY)
480 printf("%s", _("(and reboot afterwards!)\n"));
483 static void convert_64bit(ext2_filsys fs, int direction)
486 * Is resize2fs going to demand a fsck run? Might as well tell the
489 if (!fsck_requested &&
490 ((fs->super->s_state & EXT2_ERROR_FS) ||
491 !(fs->super->s_state & EXT2_VALID_FS) ||
492 fs->super->s_lastcheck < fs->super->s_mtime))
493 request_fsck_afterwards(fs);
495 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
496 direction > 0 ? "-b" : "-s", fs->device_name);
498 fprintf(stderr, _("Please run `resize2fs %s %s"),
499 direction > 0 ? "-b" : "-s", fs->device_name);
502 fprintf(stderr, _(" -z \"%s\""), undo_file);
504 fprintf(stderr, _("' to enable 64-bit mode.\n"));
506 fprintf(stderr, _("' to disable 64-bit mode.\n"));
510 * Rewrite directory blocks with checksums
512 struct rewrite_dir_context {
520 static int rewrite_dir_block(ext2_filsys fs,
522 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
523 blk64_t ref_block EXT2FS_ATTR((unused)),
524 int ref_offset EXT2FS_ATTR((unused)),
527 struct ext2_dx_countlimit *dcl = NULL;
528 struct rewrite_dir_context *ctx = priv_data;
529 int dcl_offset, changed = 0;
531 ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
537 * if htree node... Note that if we are clearing htree structures from
538 * the directory, we treat the htree internal block as an ordinary leaf.
539 * The code below will do the right thing and make space for checksum
542 if (ctx->is_htree && !ctx->clear_htree)
543 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
546 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
547 /* Ensure limit is the max size */
548 int max_entries = (fs->blocksize - dcl_offset) /
549 sizeof(struct ext2_dx_entry);
550 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
552 dcl->limit = ext2fs_cpu_to_le16(max_entries);
555 /* If htree block is full then rebuild the dir */
556 if (ext2fs_le16_to_cpu(dcl->count) ==
557 ext2fs_le16_to_cpu(dcl->limit)) {
558 request_dir_fsck_afterwards(fs);
562 * Ensure dcl->limit is small enough to leave room for
565 int max_entries = (fs->blocksize - (dcl_offset +
566 sizeof(struct ext2_dx_tail))) /
567 sizeof(struct ext2_dx_entry);
568 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
569 dcl->limit = ext2fs_cpu_to_le16(max_entries);
570 /* Always rewrite checksum */
574 unsigned int rec_len, name_size;
575 char *top = ctx->buf + fs->blocksize;
576 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
577 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
579 /* Find last and penultimate dirent */
580 while ((char *)de < top) {
581 penultimate_de = last_de;
583 ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
584 if (!ctx->errcode && !rec_len)
585 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
588 de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
590 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
593 name_size = ext2fs_dirent_name_len(last_de);
595 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
598 if (last_de->inode ||
600 rec_len != sizeof(struct ext2_dir_entry_tail))
603 * The last dirent is unused and the right length to
604 * have stored a checksum. Erase it.
606 ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
609 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
612 ext2fs_set_rec_len(fs, rec_len +
613 sizeof(struct ext2_dir_entry_tail),
617 unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
618 struct ext2_dir_entry_tail *t;
621 * If the last dirent looks like the tail, just update
624 if (!last_de->inode &&
625 rec_len == csum_size) {
626 t = (struct ext2_dir_entry_tail *)last_de;
627 t->det_reserved_name_len =
628 EXT2_DIR_NAME_LEN_CSUM;
633 name_size = (name_size & ~3) + 4;
634 /* If there's not enough space for the tail, e2fsck */
635 if (rec_len <= (8 + name_size + csum_size)) {
636 request_dir_fsck_afterwards(fs);
639 /* Shorten that last de and insert the tail */
640 ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
641 t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
642 ext2fs_initialize_dirent_tail(fs, t);
644 /* Always update checksum */
653 ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
661 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
662 struct ext2_inode *inode)
665 struct rewrite_dir_context ctx;
667 retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
671 ctx.is_htree = !!(inode->i_flags & EXT2_INDEX_FL);
672 ctx.clear_htree = !ext2fs_has_feature_dir_index(fs->super);
675 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
676 BLOCK_FLAG_DATA_ONLY,
677 0, rewrite_dir_block, &ctx);
679 ext2fs_free_mem(&ctx.buf);
683 if (ctx.is_htree && ctx.clear_htree) {
684 inode->i_flags &= ~EXT2_INDEX_FL;
685 retval = ext2fs_write_inode(fs, dir, inode);
694 * Context information that does not change across rewrite_one_inode()
697 struct rewrite_context {
699 struct ext2_inode *zero_inode;
704 #define fatal_err(code, args...) \
706 com_err(__func__, code, args); \
710 static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
711 struct ext2_inode *inode)
717 retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
719 fatal_err(retval, "open ea_inode");
720 retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
723 fatal_err(retval, "read ea_inode");
724 retval = ext2fs_file_close(file);
726 fatal_err(retval, "close ea_inode");
728 hash = ext2fs_crc32c_le(ctx->fs->csum_seed,
729 (unsigned char *) ctx->ea_buf, inode->i_size);
730 ext2fs_set_ea_inode_hash(inode, hash);
733 static int update_xattr_entry_hashes(ext2_filsys fs,
734 struct ext2_ext_attr_entry *entry,
735 struct ext2_ext_attr_entry *end)
740 while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
741 if (entry->e_value_inum) {
742 retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
745 fatal_err(retval, "hash ea_inode entry");
748 entry = EXT2_EXT_ATTR_NEXT(entry);
753 static void update_inline_xattr_hashes(struct rewrite_context *ctx,
754 struct ext2_inode_large *inode)
756 struct ext2_ext_attr_entry *start, *end;
759 if (inode->i_extra_isize == 0)
762 if (inode->i_extra_isize & 3 ||
763 inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
764 fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
766 ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
767 inode->i_extra_isize);
768 if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
771 start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
772 end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
774 update_xattr_entry_hashes(ctx->fs, start, end);
777 static void update_block_xattr_hashes(struct rewrite_context *ctx,
780 struct ext2_ext_attr_header *header;
781 struct ext2_ext_attr_entry *start, *end;
783 header = (struct ext2_ext_attr_header *)block_buf;
784 if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
787 start = (struct ext2_ext_attr_entry *)(header+1);
788 end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
790 if (update_xattr_entry_hashes(ctx->fs, start, end))
791 ext2fs_ext_attr_block_rehash(header, end);
794 static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
795 struct ext2_inode *inode)
797 blk64_t file_acl_block;
800 if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
801 if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
803 memset(inode, 0, ctx->inode_size);
806 if (inode->i_flags & EXT4_EA_INODE_FL)
807 update_ea_inode_hash(ctx, ino, inode);
809 if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
810 update_inline_xattr_hashes(ctx,
811 (struct ext2_inode_large *)inode);
813 retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
815 fatal_err(retval, "while writing inode");
817 retval = ext2fs_fix_extents_checksums(ctx->fs, ino, inode);
819 fatal_err(retval, "while rewriting extents");
821 if (LINUX_S_ISDIR(inode->i_mode) &&
822 ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
823 retval = rewrite_directory(ctx->fs, ino, inode);
825 fatal_err(retval, "while rewriting directories");
828 file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
832 retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
835 fatal_err(retval, "while rewriting extended attribute");
837 update_block_xattr_hashes(ctx, ctx->ea_buf);
838 retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
841 fatal_err(retval, "while rewriting extended attribute");
844 #define REWRITE_EA_FL 0x01 /* Rewrite EA inodes */
845 #define REWRITE_DIR_FL 0x02 /* Rewrite directories */
846 #define REWRITE_NONDIR_FL 0x04 /* Rewrite other inodes */
847 #define REWRITE_ALL (REWRITE_EA_FL | REWRITE_DIR_FL | REWRITE_NONDIR_FL)
849 static void rewrite_inodes_pass(struct rewrite_context *ctx, unsigned int flags)
851 ext2_inode_scan scan;
854 struct ext2_inode *inode;
857 retval = ext2fs_get_mem(ctx->inode_size, &inode);
859 fatal_err(retval, "while allocating memory");
861 retval = ext2fs_open_inode_scan(ctx->fs, 0, &scan);
863 fatal_err(retval, "while opening inode scan");
866 retval = ext2fs_get_next_inode_full(scan, &ino, inode,
869 fatal_err(retval, "while getting next inode");
874 if (inode->i_flags & EXT4_EA_INODE_FL) {
875 if (flags & REWRITE_EA_FL)
877 } else if (LINUX_S_ISDIR(inode->i_mode)) {
878 if (flags & REWRITE_DIR_FL)
881 if (flags & REWRITE_NONDIR_FL)
885 rewrite_one_inode(ctx, ino, inode);
887 ext2fs_close_inode_scan(scan);
888 ext2fs_free_mem(&inode);
892 * Forcibly rewrite checksums in inodes specified by 'flags'
894 static void rewrite_inodes(ext2_filsys fs, unsigned int flags)
896 struct rewrite_context ctx = {
898 .inode_size = EXT2_INODE_SIZE(fs->super),
902 if (fs->super->s_creator_os == EXT2_OS_HURD)
905 retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
907 fatal_err(retval, "while allocating memory");
909 retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
911 fatal_err(retval, "while allocating memory");
914 * Extended attribute inodes have a lookup hash that needs to be
915 * recalculated with the new csum_seed. Other inodes referencing xattr
916 * inodes need this value to be up to date. That's why we do two passes:
918 * pass 1: update xattr inodes to update their lookup hash as well as
921 * pass 2: go over other inodes to update their checksums.
923 if (ext2fs_has_feature_ea_inode(fs->super) && (flags & REWRITE_EA_FL))
924 rewrite_inodes_pass(&ctx, REWRITE_EA_FL);
925 flags &= ~REWRITE_EA_FL;
926 rewrite_inodes_pass(&ctx, flags);
928 ext2fs_free_mem(&ctx.zero_inode);
929 ext2fs_free_mem(&ctx.ea_buf);
932 static void rewrite_metadata_checksums(ext2_filsys fs, unsigned int flags)
937 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
938 ext2fs_init_csum_seed(fs);
939 for (i = 0; i < fs->group_desc_count; i++)
940 ext2fs_group_desc_csum_set(fs, i);
941 retval = ext2fs_read_bitmaps(fs);
943 fatal_err(retval, "while reading bitmaps");
944 rewrite_inodes(fs, flags);
945 ext2fs_mark_ib_dirty(fs);
946 ext2fs_mark_bb_dirty(fs);
947 ext2fs_mmp_update2(fs, 1);
948 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
949 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
950 if (ext2fs_has_feature_metadata_csum(fs->super))
951 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
953 fs->super->s_checksum_type = 0;
954 ext2fs_mark_super_dirty(fs);
957 static void enable_uninit_bg(ext2_filsys fs)
959 struct ext2_group_desc *gd;
962 for (i = 0; i < fs->group_desc_count; i++) {
963 gd = ext2fs_group_desc(fs, fs->group_desc, i);
964 gd->bg_itable_unused = 0;
965 gd->bg_flags = EXT2_BG_INODE_ZEROED;
966 ext2fs_group_desc_csum_set(fs, i);
968 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
971 static errcode_t zero_empty_inodes(ext2_filsys fs)
973 int length = EXT2_INODE_SIZE(fs->super);
974 struct ext2_inode *inode = NULL;
975 ext2_inode_scan scan;
979 retval = ext2fs_open_inode_scan(fs, 0, &scan);
983 retval = ext2fs_get_mem(length, &inode);
988 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
993 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
994 memset(inode, 0, length);
995 retval = ext2fs_write_inode_full(fs, ino, inode,
1003 ext2fs_free_mem(&inode);
1004 ext2fs_close_inode_scan(scan);
1008 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
1010 struct ext2_group_desc *gd;
1015 /* Load bitmaps to ensure that the uninit ones get written out */
1016 fs->super->s_feature_ro_compat |= csum_feature_flag;
1017 retval = ext2fs_read_bitmaps(fs);
1018 fs->super->s_feature_ro_compat &= ~csum_feature_flag;
1020 com_err("disable_uninit_bg", retval,
1021 "while reading bitmaps");
1022 request_fsck_afterwards(fs);
1025 ext2fs_mark_ib_dirty(fs);
1026 ext2fs_mark_bb_dirty(fs);
1028 /* If we're only turning off uninit_bg, zero the inodes */
1029 if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1030 retval = zero_empty_inodes(fs);
1032 com_err("disable_uninit_bg", retval,
1033 "while zeroing unused inodes");
1034 request_fsck_afterwards(fs);
1039 /* The bbitmap is zeroed; we must mark group metadata blocks in use */
1040 for (i = 0; i < fs->group_desc_count; i++) {
1041 b = ext2fs_block_bitmap_loc(fs, i);
1042 ext2fs_mark_block_bitmap2(fs->block_map, b);
1043 b = ext2fs_inode_bitmap_loc(fs, i);
1044 ext2fs_mark_block_bitmap2(fs->block_map, b);
1046 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
1047 if (retval == 0 && b)
1048 ext2fs_mark_block_bitmap2(fs->block_map, b);
1049 if (retval == 0 && c)
1050 ext2fs_mark_block_bitmap2(fs->block_map, c);
1051 if (retval == 0 && d)
1052 ext2fs_mark_block_bitmap2(fs->block_map, d);
1054 com_err("disable_uninit_bg", retval,
1055 "while initializing block bitmaps");
1056 request_fsck_afterwards(fs);
1059 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1060 gd->bg_itable_unused = 0;
1062 ext2fs_group_desc_csum_set(fs, i);
1064 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1065 ext2fs_mark_super_dirty(fs);
1071 try_confirm_csum_seed_support(void)
1073 if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
1074 fputs(_("WARNING: Could not confirm kernel support for "
1075 "metadata_csum_seed.\n This requires Linux >= "
1076 "v4.4.\n"), stderr);
1080 * Update the feature set as provided by the user.
1082 static int update_feature_set(ext2_filsys fs, char *features)
1084 struct ext2_super_block *sb = fs->super;
1085 __u32 old_features[3];
1087 unsigned int mask_err;
1089 enum quota_type qtype;
1091 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
1092 ((&sb->s_feature_compat)[(type)] & (mask)))
1093 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
1094 !((&sb->s_feature_compat)[(type)] & (mask)))
1095 #define FEATURE_CHANGED(type, mask) ((mask) & \
1096 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
1098 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1099 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1100 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1102 if (e2p_edit_feature2(features, &sb->s_feature_compat,
1103 ok_features, clear_ok_features,
1104 &type_err, &mask_err)) {
1107 _("Invalid filesystem option set: %s\n"),
1109 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1110 fprintf(stderr, _("Clearing filesystem feature '%s' "
1111 "not supported.\n"),
1112 e2p_feature2string(type_err &
1113 E2P_FEATURE_TYPE_MASK,
1116 fprintf(stderr, _("Setting filesystem feature '%s' "
1117 "not supported.\n"),
1118 e2p_feature2string(type_err, mask_err));
1122 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1123 if ((mount_flags & EXT2_MF_MOUNTED) &&
1124 !(mount_flags & EXT2_MF_READONLY)) {
1125 fputs(_("The has_journal feature may only be "
1126 "cleared when the filesystem is\n"
1127 "unmounted or mounted "
1128 "read-only.\n"), stderr);
1131 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1133 fputs(_("The needs_recovery flag is set. "
1134 "Please run e2fsck before clearing\n"
1135 "the has_journal flag.\n"), stderr);
1138 if (sb->s_journal_inum) {
1139 if (remove_journal_inode(fs))
1142 if (sb->s_journal_dev) {
1143 if (remove_journal_device(fs))
1148 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1149 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1150 if (ext2fs_has_feature_meta_bg(sb)) {
1151 fputs(_("Setting filesystem feature 'sparse_super' "
1152 "not supported\nfor filesystems with "
1153 "the meta_bg feature enabled.\n"),
1159 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1162 if ((mount_flags & EXT2_MF_MOUNTED) ||
1163 (mount_flags & EXT2_MF_READONLY)) {
1164 fputs(_("The multiple mount protection feature can't\n"
1165 "be set if the filesystem is mounted or\n"
1166 "read-only.\n"), stderr);
1170 error = ext2fs_mmp_init(fs);
1172 fputs(_("\nError while enabling multiple mount "
1173 "protection feature."), stderr);
1178 * We want to update group desc with the new free blocks count
1180 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1182 printf(_("Multiple mount protection has been enabled "
1183 "with update interval %ds.\n"),
1184 sb->s_mmp_update_interval);
1187 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1190 if (mount_flags & EXT2_MF_READONLY) {
1191 fputs(_("The multiple mount protection feature cannot\n"
1192 "be disabled if the filesystem is readonly.\n"),
1197 error = ext2fs_read_bitmaps(fs);
1199 fputs(_("Error while reading bitmaps\n"), stderr);
1203 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1205 struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1207 if (error == EXT2_ET_MMP_MAGIC_INVALID)
1208 printf(_("Magic number in MMP block does not "
1209 "match. expected: %x, actual: %x\n"),
1210 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1212 com_err(program_name, error, "%s",
1213 _("while reading MMP block."));
1217 /* We need to force out the group descriptors as well */
1218 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1219 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1221 sb->s_mmp_block = 0;
1222 sb->s_mmp_update_interval = 0;
1225 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1227 * If adding a journal flag, let the create journal
1228 * code below handle setting the flag and creating the
1229 * journal. We supply a default size if necessary.
1233 ext2fs_clear_feature_journal(sb);
1236 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1237 if (!sb->s_def_hash_version)
1238 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1239 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1240 uuid_generate((unsigned char *) sb->s_hash_seed);
1243 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX) &&
1244 ext2fs_has_feature_metadata_csum(sb)) {
1245 if (check_fsck_needed(fs,
1246 _("Disabling directory index on filesystem with "
1247 "checksums could take some time.")))
1249 if (mount_flags & EXT2_MF_MOUNTED) {
1250 fputs(_("Cannot disable dir_index on a mounted "
1251 "filesystem!\n"), stderr);
1255 * Clearing dir_index on checksummed filesystem requires
1256 * rewriting all directories to update checksums.
1258 rewrite_checksums |= REWRITE_DIR_FL;
1261 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1262 if (ext2fs_check_desc(fs)) {
1263 fputs(_("Clearing the flex_bg flag would "
1264 "cause the the filesystem to be\n"
1265 "inconsistent.\n"), stderr);
1270 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1271 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1272 if ((mount_flags & EXT2_MF_MOUNTED) &&
1273 !(mount_flags & EXT2_MF_READONLY)) {
1274 fputs(_("The huge_file feature may only be "
1275 "cleared when the filesystem is\n"
1276 "unmounted or mounted "
1277 "read-only.\n"), stderr);
1282 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1283 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1284 if (check_fsck_needed(fs,
1285 _("Enabling checksums could take some time.")))
1287 if (mount_flags & EXT2_MF_MOUNTED) {
1288 fputs(_("Cannot enable metadata_csum on a mounted "
1289 "filesystem!\n"), stderr);
1292 if (!ext2fs_has_feature_extents(fs->super))
1294 _("Extents are not enabled. The file extent "
1295 "tree can be checksummed, whereas block maps "
1296 "cannot. Not enabling extents reduces the "
1297 "coverage of metadata checksumming. "
1298 "Re-run with -O extent to rectify.\n"));
1299 if (!ext2fs_has_feature_64bit(fs->super))
1301 _("64-bit filesystem support is not enabled. "
1302 "The larger fields afforded by this feature "
1303 "enable full-strength checksumming. "
1304 "Run resize2fs -b to rectify.\n"));
1305 rewrite_checksums = REWRITE_ALL;
1306 /* metadata_csum supersedes uninit_bg */
1307 ext2fs_clear_feature_gdt_csum(fs->super);
1309 /* if uninit_bg was previously off, rewrite group desc */
1310 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1311 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1312 enable_uninit_bg(fs);
1315 * Since metadata_csum supersedes uninit_bg, pretend like
1316 * uninit_bg has been off all along.
1318 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1319 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1322 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1323 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1324 __u32 test_features[3];
1326 if (check_fsck_needed(fs,
1327 _("Disabling checksums could take some time.")))
1329 if (mount_flags & EXT2_MF_MOUNTED) {
1330 fputs(_("Cannot disable metadata_csum on a mounted "
1331 "filesystem!\n"), stderr);
1334 rewrite_checksums = REWRITE_ALL;
1336 /* Enable uninit_bg unless the user expressly turned it off */
1337 memcpy(test_features, old_features, sizeof(test_features));
1338 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1339 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1340 e2p_edit_feature2(features, test_features, ok_features,
1341 clear_ok_features, NULL, NULL);
1342 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1343 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1344 ext2fs_set_feature_gdt_csum(fs->super);
1347 * If we're turning off metadata_csum and not turning on
1348 * uninit_bg, rewrite group desc.
1350 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1351 err = disable_uninit_bg(fs,
1352 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1357 * metadata_csum previously provided uninit_bg, so if
1358 * we're also setting the uninit_bg feature bit,
1359 * pretend like it was previously enabled. Checksums
1360 * will be rewritten with crc16 later.
1362 old_features[E2P_FEATURE_RO_INCOMPAT] |=
1363 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1364 fs->super->s_checksum_seed = 0;
1365 ext2fs_clear_feature_csum_seed(fs->super);
1368 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1369 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1370 if (mount_flags & EXT2_MF_MOUNTED) {
1371 fputs(_("Cannot enable uninit_bg on a mounted "
1372 "filesystem!\n"), stderr);
1376 /* Do not enable uninit_bg when metadata_csum enabled */
1377 if (ext2fs_has_feature_metadata_csum(fs->super))
1378 ext2fs_clear_feature_gdt_csum(fs->super);
1380 enable_uninit_bg(fs);
1383 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1384 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1385 if (mount_flags & EXT2_MF_MOUNTED) {
1386 fputs(_("Cannot disable uninit_bg on a mounted "
1387 "filesystem!\n"), stderr);
1391 err = disable_uninit_bg(fs,
1392 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1398 * We don't actually toggle 64bit; resize2fs does that. But this
1399 * must come after the metadata_csum feature_on so that it won't
1400 * complain about the lack of 64bit.
1402 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1403 EXT4_FEATURE_INCOMPAT_64BIT)) {
1404 if (mount_flags & EXT2_MF_MOUNTED) {
1405 fprintf(stderr, _("Cannot enable 64-bit mode "
1406 "while mounted!\n"));
1409 ext2fs_clear_feature_64bit(sb);
1412 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1413 EXT4_FEATURE_INCOMPAT_64BIT)) {
1414 if (mount_flags & EXT2_MF_MOUNTED) {
1415 fprintf(stderr, _("Cannot disable 64-bit mode "
1416 "while mounted!\n"));
1419 ext2fs_set_feature_64bit(sb);
1423 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1424 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1426 * Set the Q_flag here and handle the quota options in the code
1431 /* Enable usr/grp quota by default */
1432 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1433 if (qtype != PRJQUOTA)
1434 quota_enable[qtype] = QOPT_ENABLE;
1436 quota_enable[qtype] = QOPT_DISABLE;
1439 ext2fs_clear_feature_quota(sb);
1442 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1443 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1444 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1445 fprintf(stderr, _("Cannot enable project feature; "
1446 "inode size too small.\n"));
1450 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1453 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1454 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1456 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1459 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1460 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1462 * Set the Q_flag here and handle the quota options in the code
1466 fputs(_("\nWarning: '^quota' option overrides '-Q'"
1467 "arguments.\n"), stderr);
1469 /* Disable all quota by default */
1470 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1471 quota_enable[qtype] = QOPT_DISABLE;
1474 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1475 fs->super->s_encrypt_algos[0] =
1476 EXT4_ENCRYPTION_MODE_AES_256_XTS;
1477 fs->super->s_encrypt_algos[1] =
1478 EXT4_ENCRYPTION_MODE_AES_256_CTS;
1481 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_CASEFOLD)) {
1482 if (mount_flags & EXT2_MF_MOUNTED) {
1483 fputs(_("The casefold feature may only be enabled when "
1484 "the filesystem is unmounted.\n"), stderr);
1487 fs->super->s_encoding = EXT4_ENC_UTF8_12_1;
1488 fs->super->s_encoding_flags = e2p_get_encoding_flags(EXT4_ENC_UTF8_12_1);
1489 enabling_casefold = 1;
1492 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1493 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1494 if (!ext2fs_has_feature_metadata_csum(sb)) {
1495 fputs(_("Setting feature 'metadata_csum_seed' "
1496 "is only supported\non filesystems with "
1497 "the metadata_csum feature enabled.\n"),
1501 try_confirm_csum_seed_support();
1502 fs->super->s_checksum_seed = fs->csum_seed;
1505 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1506 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1509 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1510 sizeof(fs->super->s_uuid));
1511 if (fs->super->s_checksum_seed != uuid_seed) {
1512 if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
1513 fputs(_("UUID has changed since enabling "
1514 "metadata_csum. Filesystem must be unmounted "
1515 "\nto safely rewrite all metadata to match the new UUID.\n"),
1519 if (check_fsck_needed(fs, _("Recalculating checksums "
1520 "could take some time.")))
1522 rewrite_checksums = REWRITE_ALL;
1526 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1527 (sb->s_feature_compat || sb->s_feature_ro_compat ||
1528 sb->s_feature_incompat))
1529 ext2fs_update_dynamic_rev(fs);
1531 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1532 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1533 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1534 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1535 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1536 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1537 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1538 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1539 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1540 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1541 request_fsck_afterwards(fs);
1543 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1544 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1545 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1546 ext2fs_mark_super_dirty(fs);
1552 * Add a journal to the filesystem.
1554 static int add_journal(ext2_filsys fs)
1556 struct ext2fs_journal_params jparams;
1561 if (ext2fs_has_feature_journal(fs->super)) {
1562 fputs(_("The filesystem already has a journal.\n"), stderr);
1565 if (journal_device) {
1566 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1568 proceed_question(-1);
1569 check_mount(journal_device, 0, _("journal"));
1570 #ifdef CONFIG_TESTIO_DEBUG
1571 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1572 io_ptr = test_io_manager;
1573 test_io_backing_manager = unix_io_manager;
1576 io_ptr = unix_io_manager;
1577 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1578 EXT2_FLAG_JOURNAL_DEV_OK, 0,
1579 fs->blocksize, io_ptr, &jfs);
1581 com_err(program_name, retval,
1582 _("\n\twhile trying to open journal on %s\n"),
1586 printf(_("Creating journal on device %s: "),
1590 retval = ext2fs_add_journal_device(fs, jfs);
1591 ext2fs_close_free(&jfs);
1593 com_err(program_name, retval,
1594 _("while adding filesystem to journal on %s"),
1598 fputs(_("done\n"), stdout);
1599 } else if (journal_size) {
1600 fputs(_("Creating journal inode: "), stdout);
1602 figure_journal_size(&jparams, journal_size, journal_fc_size, fs);
1604 if (journal_location_string)
1606 parse_num_blocks2(journal_location_string,
1607 fs->super->s_log_block_size);
1608 retval = ext2fs_add_journal_inode3(fs, &jparams,
1612 fprintf(stderr, "\n");
1613 com_err(program_name, retval, "%s",
1614 _("\n\twhile trying to create journal file"));
1617 fs->super->s_overhead_clusters += EXT2FS_NUM_B2C(fs,
1618 jparams.num_journal_blocks + jparams.num_fc_blocks);
1619 ext2fs_mark_super_dirty(fs);
1620 fputs(_("done\n"), stdout);
1623 * If the filesystem wasn't mounted, we need to force
1624 * the block group descriptors out.
1626 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1627 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1629 print_check_message(fs->super->s_max_mnt_count,
1630 fs->super->s_checkinterval);
1634 free(journal_device);
1638 static int handle_quota_options(ext2_filsys fs)
1643 enum quota_type qtype;
1644 unsigned int qtype_bits = 0;
1647 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1648 if (quota_enable[qtype] != 0)
1650 if (qtype == MAXQUOTAS)
1651 /* Nothing to do. */
1654 if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1655 fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1656 fprintf(stderr, _("Cannot enable project quota; "
1657 "inode size too small.\n"));
1661 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1662 if (quota_enable[qtype] == QOPT_ENABLE)
1663 qtype_bits |= 1 << qtype;
1666 retval = quota_init_context(&qctx, fs, qtype_bits);
1668 com_err(program_name, retval,
1669 _("while initializing quota context in support library"));
1674 quota_compute_usage(qctx);
1676 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1677 if (quota_enable[qtype] == QOPT_ENABLE &&
1678 *quota_sb_inump(fs->super, qtype) == 0) {
1679 if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1680 retval = quota_read_all_dquots(qctx, qf_ino,
1684 com_err(program_name, retval,
1685 _("while updating quota limits (%d)"),
1688 quota_release_context(&qctx);
1692 retval = quota_write_inode(qctx, 1 << qtype);
1694 com_err(program_name, retval,
1695 _("while writing quota file (%d)"),
1699 /* Enable Quota feature if one of quota enabled */
1700 if (!ext2fs_has_feature_quota(fs->super)) {
1701 ext2fs_set_feature_quota(fs->super);
1704 if (qtype == PRJQUOTA &&
1705 !ext2fs_has_feature_project(fs->super)) {
1706 ext2fs_set_feature_project(fs->super);
1709 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1710 retval = quota_remove_inode(fs, qtype);
1712 com_err(program_name, retval,
1713 _("while removing quota file (%d)"),
1717 if (qtype == PRJQUOTA) {
1718 ext2fs_clear_feature_project(fs->super);
1724 quota_release_context(&qctx);
1725 /* Clear Quota feature if all quota types disabled. */
1727 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1728 if (*quota_sb_inump(fs->super, qtype))
1730 if (qtype == MAXQUOTAS) {
1731 ext2fs_clear_feature_quota(fs->super);
1737 ext2fs_mark_super_dirty(fs);
1741 static int option_handle_function(char *token)
1743 if (strncmp(token, "usr", 3) == 0) {
1744 quota_enable[USRQUOTA] = QOPT_ENABLE;
1745 } else if (strncmp(token, "^usr", 4) == 0) {
1746 quota_enable[USRQUOTA] = QOPT_DISABLE;
1747 } else if (strncmp(token, "grp", 3) == 0) {
1748 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1749 } else if (strncmp(token, "^grp", 4) == 0) {
1750 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1751 } else if (strncmp(token, "prj", 3) == 0) {
1752 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1753 } else if (strncmp(token, "^prj", 4) == 0) {
1754 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1756 fputs(_("\nBad quota options specified.\n\n"
1757 "Following valid quota options are available "
1758 "(pass by separating with comma):\n"
1768 static void parse_e2label_options(int argc, char ** argv)
1770 if ((argc < 2) || (argc > 3)) {
1771 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1774 io_options = strchr(argv[1], '?');
1777 device_name = blkid_get_devname(NULL, argv[1], NULL);
1779 com_err("e2label", 0, _("Unable to resolve '%s'"),
1783 open_flag = EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_SUPER_ONLY;
1785 open_flag |= EXT2_FLAG_RW;
1787 new_label = argv[2];
1792 static time_t parse_time(char *str)
1796 if (strcmp(str, "now") == 0) {
1799 memset(&ts, 0, sizeof(ts));
1800 #ifdef HAVE_STRPTIME
1801 strptime(str, "%Y%m%d%H%M%S", &ts);
1803 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1804 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1807 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1808 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1809 ts.tm_min > 59 || ts.tm_sec > 61)
1812 if (ts.tm_mday == 0) {
1813 com_err(program_name, 0,
1814 _("Couldn't parse date/time specifier: %s"),
1819 return (mktime(&ts));
1822 static void parse_tune2fs_options(int argc, char **argv)
1829 char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1832 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1833 while ((c = getopt(argc, argv, optstring)) != EOF)
1836 open_flag = EXT2_FLAG_RW;
1838 if (strcmp(optarg, "random") == 0) {
1839 max_mount_count = 65536;
1842 max_mount_count = strtol(optarg, &tmp, 0);
1843 if (*tmp || max_mount_count > 16000 ||
1844 max_mount_count < -16000) {
1845 com_err(program_name, 0,
1846 _("bad mounts count - %s"),
1850 if (max_mount_count == 0)
1851 max_mount_count = -1;
1854 mount_count = strtoul(optarg, &tmp, 0);
1855 if (*tmp || mount_count > 16000) {
1856 com_err(program_name, 0,
1857 _("bad mounts count - %s"),
1862 open_flag = EXT2_FLAG_RW;
1865 if (strcmp(optarg, "continue") == 0)
1866 errors = EXT2_ERRORS_CONTINUE;
1867 else if (strcmp(optarg, "remount-ro") == 0)
1868 errors = EXT2_ERRORS_RO;
1869 else if (strcmp(optarg, "panic") == 0)
1870 errors = EXT2_ERRORS_PANIC;
1872 com_err(program_name, 0,
1873 _("bad error behavior - %s"),
1878 open_flag = EXT2_FLAG_RW;
1881 extended_cmd = optarg;
1882 open_flag |= EXT2_FLAG_RW;
1884 case 'f': /* Force */
1888 resgid = strtoul(optarg, &tmp, 0);
1890 gr = getgrnam(optarg);
1894 resgid = gr->gr_gid;
1899 com_err(program_name, 0,
1900 _("bad gid/group name - %s"),
1905 open_flag = EXT2_FLAG_RW;
1908 interval = strtoul(optarg, &tmp, 0);
1915 case 'D': /* days */
1921 case 'M': /* months! */
1922 interval *= 86400 * 30;
1926 case 'W': /* weeks */
1927 interval *= 86400 * 7;
1932 com_err(program_name, 0,
1933 _("bad interval - %s"), optarg);
1937 open_flag = EXT2_FLAG_RW;
1942 open_flag = EXT2_FLAG_RW;
1945 parse_journal_opts(optarg);
1946 open_flag = EXT2_FLAG_RW;
1954 open_flag |= EXT2_FLAG_RW |
1955 EXT2_FLAG_JOURNAL_DEV_OK;
1958 reserved_ratio = strtod(optarg, &tmp);
1959 if (*tmp || reserved_ratio > 50 ||
1960 reserved_ratio < 0) {
1961 com_err(program_name, 0,
1962 _("bad reserved block ratio - %s"),
1967 open_flag = EXT2_FLAG_RW;
1970 new_last_mounted = optarg;
1972 open_flag = EXT2_FLAG_RW;
1976 com_err(program_name, 0, "%s",
1977 _("-o may only be specified once"));
1980 mntopts_cmd = optarg;
1981 open_flag = EXT2_FLAG_RW;
1985 com_err(program_name, 0, "%s",
1986 _("-O may only be specified once"));
1989 features_cmd = optarg;
1990 open_flag = EXT2_FLAG_RW;
1994 ret = parse_quota_opts(optarg, option_handle_function);
1997 open_flag = EXT2_FLAG_RW;
2000 reserved_blocks = strtoul(optarg, &tmp, 0);
2002 com_err(program_name, 0,
2003 _("bad reserved blocks count - %s"),
2008 open_flag = EXT2_FLAG_RW;
2010 case 's': /* Deprecated */
2011 s_flag = atoi(optarg);
2012 open_flag = EXT2_FLAG_RW;
2016 last_check_time = parse_time(optarg);
2017 open_flag = EXT2_FLAG_RW;
2020 resuid = strtoul(optarg, &tmp, 0);
2022 pw = getpwnam(optarg);
2026 resuid = pw->pw_uid;
2031 com_err(program_name, 0,
2032 _("bad uid/user name - %s"),
2037 open_flag = EXT2_FLAG_RW;
2042 open_flag = EXT2_FLAG_RW |
2043 EXT2_FLAG_JOURNAL_DEV_OK;
2046 new_inode_size = strtoul(optarg, &tmp, 0);
2048 com_err(program_name, 0,
2049 _("bad inode size - %s"),
2053 if (!((new_inode_size &
2054 (new_inode_size - 1)) == 0)) {
2055 com_err(program_name, 0,
2056 _("Inode size must be a "
2057 "power of two- %s"),
2061 open_flag = EXT2_FLAG_RW;
2070 if (optind < argc - 1 || optind == argc)
2072 if (!open_flag && !l_flag)
2074 io_options = strchr(argv[optind], '?');
2077 device_name = blkid_get_devname(NULL, argv[optind], NULL);
2079 com_err(program_name, 0, _("Unable to resolve '%s'"),
2085 #ifdef CONFIG_BUILD_FINDFS
2086 void do_findfs(int argc, char **argv)
2091 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
2092 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
2095 dev = blkid_get_devname(NULL, argv[1], NULL);
2097 com_err("findfs", 0, _("Unable to resolve '%s'"),
2106 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2108 struct ext2_super_block *sb = fs->super;
2109 char *buf, *token, *next, *p, *arg;
2113 char *encoding_flags = NULL;
2116 buf = malloc(len+1);
2118 fprintf(stderr, "%s",
2119 _("Couldn't allocate memory to parse options!\n"));
2123 for (token = buf; token && *token; token = next) {
2124 p = strchr(token, ',');
2130 arg = strchr(token, '=');
2135 if (strcmp(token, "clear-mmp") == 0 ||
2136 strcmp(token, "clear_mmp") == 0) {
2138 } else if (strcmp(token, "mmp_update_interval") == 0) {
2144 intv = strtoul(arg, &p, 0);
2147 _("Invalid mmp_update_interval: %s\n"),
2153 intv = EXT4_MMP_UPDATE_INTERVAL;
2154 } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2156 _("mmp_update_interval too big: %lu\n"),
2161 printf(P_("Setting multiple mount protection update "
2162 "interval to %lu second\n",
2163 "Setting multiple mount protection update "
2164 "interval to %lu seconds\n", intv),
2166 sb->s_mmp_update_interval = intv;
2167 ext2fs_mark_super_dirty(fs);
2168 } else if (!strcmp(token, "force_fsck")) {
2169 sb->s_state |= EXT2_ERROR_FS;
2170 printf(_("Setting filesystem error flag to force fsck.\n"));
2171 ext2fs_mark_super_dirty(fs);
2172 } else if (!strcmp(token, "test_fs")) {
2173 sb->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2174 printf("Setting test filesystem flag\n");
2175 ext2fs_mark_super_dirty(fs);
2176 } else if (!strcmp(token, "^test_fs")) {
2177 sb->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2178 printf("Clearing test filesystem flag\n");
2179 ext2fs_mark_super_dirty(fs);
2180 } else if (strcmp(token, "stride") == 0) {
2185 stride = strtoul(arg, &p, 0);
2188 _("Invalid RAID stride: %s\n"),
2194 } else if (strcmp(token, "stripe-width") == 0 ||
2195 strcmp(token, "stripe_width") == 0) {
2200 stripe_width = strtoul(arg, &p, 0);
2203 _("Invalid RAID stripe-width: %s\n"),
2208 stripe_width_set = 1;
2209 } else if (strcmp(token, "hash_alg") == 0 ||
2210 strcmp(token, "hash-alg") == 0) {
2215 hash_alg = e2p_string2hash(arg);
2218 _("Invalid hash algorithm: %s\n"),
2223 sb->s_def_hash_version = hash_alg;
2224 printf(_("Setting default hash algorithm "
2227 ext2fs_mark_super_dirty(fs);
2228 } else if (!strcmp(token, "mount_opts")) {
2233 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2235 "Extended mount options too long\n");
2238 ext_mount_opts = strdup(arg);
2239 } else if (!strcmp(token, "encoding")) {
2244 if (mount_flags & EXT2_MF_MOUNTED) {
2245 fputs(_("The casefold feature may only be enabled when "
2246 "the filesystem is unmounted.\n"), stderr);
2250 if (ext2fs_has_feature_casefold(sb) && !enabling_casefold) {
2251 fprintf(stderr, _("Cannot alter existing encoding\n"));
2255 encoding = e2p_str2encoding(arg);
2257 fprintf(stderr, _("Invalid encoding: %s\n"), arg);
2261 enabling_casefold = 1;
2262 sb->s_encoding = encoding;
2263 printf(_("Setting encoding to '%s'\n"), arg);
2264 sb->s_encoding_flags =
2265 e2p_get_encoding_flags(sb->s_encoding);
2266 } else if (!strcmp(token, "encoding_flags")) {
2271 encoding_flags = arg;
2276 if (encoding > 0 && !r_usage) {
2277 sb->s_encoding_flags =
2278 e2p_get_encoding_flags(sb->s_encoding);
2280 if (encoding_flags &&
2281 e2p_str2encoding_flags(sb->s_encoding, encoding_flags,
2282 &sb->s_encoding_flags)) {
2283 fprintf(stderr, _("error: Invalid encoding flag: %s\n"),
2286 } else if (encoding_flags)
2287 printf(_("Setting encoding_flags to '%s'\n"),
2289 ext2fs_set_feature_casefold(sb);
2290 ext2fs_mark_super_dirty(fs);
2291 } else if (encoding_flags && !r_usage) {
2292 fprintf(stderr, _("error: An encoding must be explicitly "
2293 "specified when passing encoding-flags\n"));
2297 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2298 "Extended options are separated by commas, "
2299 "and may take an argument which\n"
2300 "\tis set off by an equals ('=') sign.\n\n"
2301 "Valid extended options are:\n"
2303 "\thash_alg=<hash algorithm>\n"
2304 "\tmount_opts=<extended default mount options>\n"
2305 "\tmmp_update_interval=<mmp update interval in seconds>\n"
2306 "\tstride=<RAID per-disk chunk size in blocks>\n"
2307 "\tstripe_width=<RAID stride*data disks in blocks>\n"
2311 "\tencoding=<encoding>\n"
2312 "\tencoding_flags=<flags>\n"));
2322 * Fill in the block bitmap bmap with the information regarding the
2323 * blocks to be moved
2325 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2326 ext2fs_block_bitmap bmap)
2330 ext2_badblocks_list bb_list = 0;
2331 blk64_t j, needed_blocks = 0;
2332 blk64_t start_blk, end_blk;
2334 retval = ext2fs_read_bb_inode(fs, &bb_list);
2338 for (i = 0; i < fs->group_desc_count; i++) {
2339 start_blk = ext2fs_inode_table_loc(fs, i) +
2340 fs->inode_blocks_per_group;
2342 end_blk = ext2fs_inode_table_loc(fs, i) +
2343 new_ino_blks_per_grp;
2345 for (j = start_blk; j < end_blk; j++) {
2346 if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2348 * IF the block is a bad block we fail
2350 if (ext2fs_badblocks_list_test(bb_list, j)) {
2351 ext2fs_badblocks_list_free(bb_list);
2355 ext2fs_mark_block_bitmap2(bmap, j);
2358 * We are going to use this block for
2359 * inode table. So mark them used.
2361 ext2fs_mark_block_bitmap2(fs->block_map, j);
2364 needed_blocks += end_blk - start_blk;
2367 ext2fs_badblocks_list_free(bb_list);
2368 if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2374 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2377 group = ext2fs_group_of_blk2(fs, blk);
2378 if (ext2fs_block_bitmap_loc(fs, group) == blk)
2380 if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2385 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2387 blk64_t start_blk, end_blk;
2388 start_blk = fs->super->s_first_data_block +
2389 EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2391 * We cannot get new block beyond end_blk for for the last block group
2392 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2394 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2395 if (blk >= start_blk && blk <= end_blk)
2400 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2407 blk64_t blk, new_blk, goal;
2408 struct blk_move *bmv;
2410 retval = ext2fs_get_mem(fs->blocksize, &buf);
2414 for (new_blk = blk = fs->super->s_first_data_block;
2415 blk < ext2fs_blocks_count(fs->super); blk++) {
2416 if (!ext2fs_test_block_bitmap2(bmap, blk))
2419 if (ext2fs_is_meta_block(fs, blk)) {
2421 * If the block is mapping a fs meta data block
2422 * like group desc/block bitmap/inode bitmap. We
2423 * should find a block in the same group and fix
2424 * the respective fs metadata pointers. Otherwise
2427 group = ext2fs_group_of_blk2(fs, blk);
2428 goal = ext2fs_group_first_block2(fs, group);
2434 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2438 /* new fs meta data block should be in the same group */
2439 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2444 /* Mark this block as allocated */
2445 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2447 /* Add it to block move list */
2448 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2453 bmv->new_loc = new_blk;
2455 list_add(&(bmv->list), &blk_move_list);
2457 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2461 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2467 ext2fs_free_mem(&buf);
2471 static blk64_t translate_block(blk64_t blk)
2473 struct list_head *entry;
2474 struct blk_move *bmv;
2476 list_for_each(entry, &blk_move_list) {
2477 bmv = list_entry(entry, struct blk_move, list);
2478 if (bmv->old_loc == blk)
2479 return bmv->new_loc;
2485 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2487 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2488 blk64_t ref_block EXT2FS_ATTR((unused)),
2489 int ref_offset EXT2FS_ATTR((unused)),
2494 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2496 if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2498 new_blk = translate_block(*block_nr);
2500 *block_nr = new_blk;
2502 * This will force the ext2fs_write_inode in the iterator
2504 ret |= BLOCK_CHANGED;
2510 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2512 errcode_t retval = 0;
2515 char *block_buf = 0;
2516 struct ext2_inode inode;
2517 ext2_inode_scan scan = NULL;
2519 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2523 retval = ext2fs_open_inode_scan(fs, 0, &scan);
2528 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2535 if (inode.i_links_count == 0)
2536 continue; /* inode not in use */
2539 * If we end up modifying the journal inode
2540 * the sb->s_jnl_blocks will differ. But a
2541 * subsequent e2fsck fixes that.
2542 * Do we need to fix this ??
2545 if (ext2fs_file_acl_block(fs, &inode) &&
2546 ext2fs_test_block_bitmap2(bmap,
2547 ext2fs_file_acl_block(fs, &inode))) {
2548 blk = translate_block(ext2fs_file_acl_block(fs,
2553 ext2fs_file_acl_block_set(fs, &inode, blk);
2556 * Write the inode to disk so that inode table
2559 retval = ext2fs_write_inode(fs, ino, &inode);
2564 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2567 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2568 process_block, bmap);
2575 ext2fs_free_mem(&block_buf);
2576 ext2fs_close_inode_scan(scan);
2582 * We need to scan for inode and block bitmaps that may need to be
2583 * moved. This can take place if the filesystem was formatted for
2584 * RAID arrays using the mke2fs's extended option "stride".
2586 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2589 blk64_t blk, new_blk;
2591 for (i = 0; i < fs->group_desc_count; i++) {
2592 blk = ext2fs_block_bitmap_loc(fs, i);
2593 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2594 new_blk = translate_block(blk);
2597 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2600 blk = ext2fs_inode_bitmap_loc(fs, i);
2601 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2602 new_blk = translate_block(blk);
2605 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2611 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2616 int new_ino_blks_per_grp;
2618 char *old_itable = NULL, *new_itable = NULL;
2619 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2620 unsigned long old_ino_size;
2621 int old_itable_size, new_itable_size;
2623 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2624 old_ino_size = EXT2_INODE_SIZE(fs->super);
2626 new_ino_blks_per_grp = ext2fs_div_ceil(
2627 EXT2_INODES_PER_GROUP(fs->super) *
2631 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2633 retval = ext2fs_get_mem(old_itable_size, &old_itable);
2637 retval = ext2fs_get_mem(new_itable_size, &new_itable);
2641 tmp_old_itable = old_itable;
2642 tmp_new_itable = new_itable;
2644 for (i = 0; i < fs->group_desc_count; i++) {
2645 blk = ext2fs_inode_table_loc(fs, i);
2646 retval = io_channel_read_blk64(fs->io, blk,
2647 fs->inode_blocks_per_group, old_itable);
2651 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2652 memcpy(new_itable, old_itable, old_ino_size);
2654 memset(new_itable+old_ino_size, 0,
2655 new_ino_size - old_ino_size);
2657 new_itable += new_ino_size;
2658 old_itable += old_ino_size;
2661 /* reset the pointer */
2662 old_itable = tmp_old_itable;
2663 new_itable = tmp_new_itable;
2665 retval = io_channel_write_blk64(fs->io, blk,
2666 new_ino_blks_per_grp, new_itable);
2671 /* Update the meta data */
2672 fs->inode_blocks_per_group = new_ino_blks_per_grp;
2673 ext2fs_free_inode_cache(fs->icache);
2675 fs->super->s_inode_size = new_ino_size;
2679 ext2fs_free_mem(&old_itable);
2682 ext2fs_free_mem(&new_itable);
2688 #define list_for_each_safe(pos, pnext, head) \
2689 for (pos = (head)->next, pnext = pos->next; pos != (head); \
2690 pos = pnext, pnext = pos->next)
2692 static void free_blk_move_list(void)
2694 struct list_head *entry, *tmp;
2695 struct blk_move *bmv;
2697 list_for_each_safe(entry, tmp, &blk_move_list) {
2698 bmv = list_entry(entry, struct blk_move, list);
2700 ext2fs_free_mem(&bmv);
2705 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2708 int new_ino_blks_per_grp;
2709 ext2fs_block_bitmap bmap;
2711 retval = ext2fs_read_inode_bitmap(fs);
2713 fputs(_("Failed to read inode bitmap\n"), stderr);
2716 retval = ext2fs_read_block_bitmap(fs);
2718 fputs(_("Failed to read block bitmap\n"), stderr);
2721 INIT_LIST_HEAD(&blk_move_list);
2724 new_ino_blks_per_grp = ext2fs_div_ceil(
2725 EXT2_INODES_PER_GROUP(fs->super)*
2729 /* We may change the file system.
2730 * Mark the file system as invalid so that
2731 * the user is prompted to run fsck.
2733 fs->super->s_state &= ~EXT2_VALID_FS;
2735 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2738 fputs(_("Failed to allocate block bitmap when "
2739 "increasing inode size\n"), stderr);
2742 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2744 fputs(_("Not enough space to increase inode size \n"), stderr);
2747 retval = move_block(fs, bmap);
2749 fputs(_("Failed to relocate blocks during inode resize \n"),
2753 retval = inode_scan_and_fix(fs, bmap);
2757 retval = group_desc_scan_and_fix(fs, bmap);
2761 retval = expand_inode_table(fs, new_size);
2765 ext2fs_calculate_summary_stats(fs, 1 /* super only */);
2767 fs->super->s_state |= EXT2_VALID_FS;
2768 /* mark super block and block bitmap as dirty */
2769 ext2fs_mark_super_dirty(fs);
2770 ext2fs_mark_bb_dirty(fs);
2773 free_blk_move_list();
2774 ext2fs_free_block_bitmap(bmap);
2779 free_blk_move_list();
2780 ext2fs_free_block_bitmap(bmap);
2781 fputs(_("Error in resizing the inode size.\n"
2782 "Run e2undo to undo the "
2783 "file system changes. \n"), stderr);
2788 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2790 errcode_t retval = 0;
2791 const char *tdb_dir;
2792 char *tdb_file = NULL;
2793 char *dev_name, *tmp_name;
2795 /* (re)open a specific undo file */
2796 if (undo_file && undo_file[0] != 0) {
2797 retval = set_undo_io_backing_manager(*io_ptr);
2800 *io_ptr = undo_io_manager;
2801 retval = set_undo_io_backup_file(undo_file);
2804 printf(_("Overwriting existing filesystem; this can be undone "
2805 "using the command:\n"
2806 " e2undo %s %s\n\n"),
2812 * Configuration via a conf file would be
2815 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2817 tdb_dir = "/var/lib/e2fsprogs";
2819 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2820 access(tdb_dir, W_OK))
2823 tmp_name = strdup(name);
2826 dev_name = basename(tmp_name);
2827 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2832 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2835 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2837 com_err(program_name, retval,
2838 _("while trying to delete %s"), tdb_file);
2842 retval = set_undo_io_backing_manager(*io_ptr);
2845 *io_ptr = undo_io_manager;
2846 retval = set_undo_io_backup_file(tdb_file);
2849 printf(_("Overwriting existing filesystem; this can be undone "
2850 "using the command:\n"
2851 " e2undo %s %s\n\n"),
2859 com_err("tune2fs", retval, "while trying to setup undo file\n");
2864 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2866 int retval, nr_users, start;
2867 journal_superblock_t *jsb;
2871 char uuid[UUID_STR_SIZE];
2872 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2874 if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2877 uuid_unparse(sb->s_journal_uuid, uuid);
2878 journal_path = blkid_get_devname(NULL, "UUID", uuid);
2882 retval = ext2fs_open2(journal_path, io_options,
2883 EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2884 0, 0, unix_io_manager, &jfs);
2886 com_err(program_name, retval,
2887 _("while trying to open %s"),
2892 retval = get_journal_sb(jfs, buf);
2894 if (retval == EXT2_ET_UNSUPP_FEATURE)
2895 fprintf(stderr, _("%s is not a journal device.\n"),
2900 jsb = (journal_superblock_t *) buf;
2901 /* Find the filesystem UUID */
2902 nr_users = ntohl(jsb->s_nr_users);
2903 if (nr_users > JBD2_USERS_MAX) {
2904 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
2905 "is too high (%d).\n"), nr_users);
2906 return EXT2_ET_CORRUPT_JOURNAL_SB;
2909 j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2910 if (j_uuid == NULL) {
2911 fputs(_("Filesystem's UUID not found on journal device.\n"),
2913 return EXT2_ET_LOAD_EXT_JOURNAL;
2916 memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2918 start = ext2fs_journal_sb_start(jfs->blocksize);
2919 /* Write back the journal superblock */
2920 retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2922 com_err(program_name, retval,
2923 "while writing journal superblock.");
2932 #ifndef BUILD_AS_LIB
2933 int main(int argc, char **argv)
2935 int tune2fs_main(int argc, char **argv)
2936 #endif /* BUILD_AS_LIB */
2940 struct ext2_super_block *sb;
2941 io_manager io_ptr, io_ptr_orig = NULL;
2943 char default_undo_file[1] = { 0 };
2946 setlocale(LC_MESSAGES, "");
2947 setlocale(LC_CTYPE, "");
2948 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2949 textdomain(NLS_CAT_NAME);
2950 set_com_err_gettext(gettext);
2953 program_name = *argv;
2954 add_error_table(&et_ext2_error_table);
2956 #ifdef CONFIG_BUILD_FINDFS
2957 if (strcmp(get_progname(argv[0]), "findfs") == 0)
2958 do_findfs(argc, argv);
2960 if (strcmp(get_progname(argv[0]), "e2label") == 0)
2961 parse_e2label_options(argc, argv);
2963 parse_tune2fs_options(argc, argv);
2965 #ifdef CONFIG_TESTIO_DEBUG
2966 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2967 io_ptr = test_io_manager;
2968 test_io_backing_manager = unix_io_manager;
2971 io_ptr = unix_io_manager;
2974 if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2975 open_flag |= EXT2_FLAG_SKIP_MMP;
2977 open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_THREADS |
2978 EXT2_FLAG_JOURNAL_DEV_OK;
2980 /* keep the filesystem struct around to dump MMP data */
2981 open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2983 retval = ext2fs_open2(device_name, io_options, open_flag,
2986 com_err(program_name, retval,
2987 _("while trying to open %s"),
2989 if (retval == EXT2_ET_MMP_FSCK_ON ||
2990 retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2991 dump_mmp_msg(fs->mmp_buf,
2992 _("If you are sure the filesystem "
2993 "is not in use on any node, run:\n"
2994 "'tune2fs -f -E clear_mmp {device}'\n"));
2995 else if (retval == EXT2_ET_MMP_FAILED)
2996 dump_mmp_msg(fs->mmp_buf, NULL);
2997 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2999 _("MMP block magic is bad. Try to fix it by "
3000 "running:\n'e2fsck -f %s'\n"), device_name);
3001 else if (retval == EXT2_ET_BAD_MAGIC)
3002 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
3003 else if (retval != EXT2_ET_MMP_FAILED)
3004 fprintf(stderr, "%s",
3005 _("Couldn't find valid filesystem superblock.\n"));
3010 if (ext2fs_has_feature_journal_dev(fs->super)) {
3011 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
3015 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
3019 * Check the inode size is right so we can issue an
3020 * error message and bail before setting up the tdb
3023 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
3024 fprintf(stderr, _("The inode size is already %lu\n"),
3029 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
3030 fprintf(stderr, "%s",
3031 _("Shrinking inode size is not supported\n"));
3035 if (new_inode_size > fs->blocksize) {
3036 fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
3037 new_inode_size, fs->blocksize);
3041 rc = check_fsck_needed(fs,
3042 _("Resizing inodes could take some time."));
3046 * If inode resize is requested use the
3049 undo_file = default_undo_file;
3052 /* Set up an undo file */
3053 if (undo_file && io_ptr_orig == NULL) {
3054 io_ptr_orig = io_ptr;
3055 retval = tune2fs_setup_tdb(device_name, &io_ptr);
3060 if (io_ptr != io_ptr_orig) {
3061 ext2fs_close_free(&fs);
3067 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
3070 /* For e2label emulation */
3071 printf("%.*s\n", EXT2_LEN_STR(sb->s_volume_name));
3072 remove_error_table(&et_ext2_error_table);
3076 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
3078 com_err("ext2fs_check_if_mount", retval,
3079 _("while determining whether %s is mounted."),
3086 /* Warn if file system needs recovery and it is opened for writing. */
3087 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3088 (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3089 (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3091 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3092 "\te2fsck -E journal_only %s\n\n"
3093 "then rerun this command. Otherwise, any changes made may be overwritten\n"
3094 "by journal recovery.\n"), device_name);
3097 /* Recover the journal if possible. */
3098 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) &&
3099 ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3100 printf(_("Recovering journal.\n"));
3101 retval = ext2fs_run_ext3_journal(&fs);
3103 com_err("tune2fs", retval,
3104 "while recovering journal.\n");
3105 printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3107 ext2fs_close_free(&fs);
3115 /* Normally we only need to write out the superblock */
3116 fs->flags |= EXT2_FLAG_SUPER_ONLY;
3119 if (max_mount_count == 65536)
3120 max_mount_count = EXT2_DFL_MAX_MNT_COUNT +
3121 (random() % EXT2_DFL_MAX_MNT_COUNT);
3122 sb->s_max_mnt_count = max_mount_count;
3123 ext2fs_mark_super_dirty(fs);
3124 printf(_("Setting maximal mount count to %d\n"),
3128 sb->s_mnt_count = mount_count;
3129 ext2fs_mark_super_dirty(fs);
3130 printf(_("Setting current mount count to %d\n"), mount_count);
3133 sb->s_errors = errors;
3134 ext2fs_mark_super_dirty(fs);
3135 printf(_("Setting error behavior to %d\n"), errors);
3138 sb->s_def_resgid = resgid;
3139 ext2fs_mark_super_dirty(fs);
3140 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3143 if ((unsigned long long)interval >= (1ULL << 32)) {
3144 com_err(program_name, 0,
3145 _("interval between checks is too big (%lu)"),
3150 sb->s_checkinterval = interval;
3151 ext2fs_mark_super_dirty(fs);
3152 printf(_("Setting interval between checks to %lu seconds\n"),
3156 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3157 ext2fs_blocks_count(sb) / 100.0);
3158 ext2fs_mark_super_dirty(fs);
3159 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3161 (unsigned long long) ext2fs_r_blocks_count(sb));
3164 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3165 com_err(program_name, 0,
3166 _("reserved blocks count is too big (%llu)"),
3167 (unsigned long long) reserved_blocks);
3171 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3172 ext2fs_mark_super_dirty(fs);
3173 printf(_("Setting reserved blocks count to %llu\n"),
3174 (unsigned long long) reserved_blocks);
3177 if (ext2fs_has_feature_sparse_super(sb)) {
3178 fputs(_("\nThe filesystem already has sparse "
3179 "superblocks.\n"), stderr);
3180 } else if (ext2fs_has_feature_meta_bg(sb)) {
3181 fputs(_("\nSetting the sparse superblock flag not "
3182 "supported\nfor filesystems with "
3183 "the meta_bg feature enabled.\n"),
3188 ext2fs_set_feature_sparse_super(sb);
3189 sb->s_state &= ~EXT2_VALID_FS;
3190 ext2fs_mark_super_dirty(fs);
3191 printf(_("\nSparse superblock flag set. %s"),
3196 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3202 sb->s_lastcheck = last_check_time;
3203 ext2fs_mark_super_dirty(fs);
3204 printf(_("Setting time filesystem last checked to %s\n"),
3205 ctime(&last_check_time));
3208 sb->s_def_resuid = resuid;
3209 ext2fs_mark_super_dirty(fs);
3210 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3213 if (strlen(new_label) > sizeof(sb->s_volume_name))
3214 fputs(_("Warning: label too long, truncating.\n"),
3216 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3217 strncpy((char *)sb->s_volume_name, new_label,
3218 sizeof(sb->s_volume_name));
3219 ext2fs_mark_super_dirty(fs);
3222 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3223 strncpy((char *)sb->s_last_mounted, new_last_mounted,
3224 sizeof(sb->s_last_mounted));
3225 ext2fs_mark_super_dirty(fs);
3228 rc = update_mntopts(fs, mntopts_cmd);
3233 rc = update_feature_set(fs, features_cmd);
3238 rc = parse_extended_opts(fs, extended_cmd);
3241 if (clear_mmp && !f_flag) {
3242 fputs(_("Error in using clear_mmp. "
3243 "It must be used with -f\n"),
3249 rc = ext2fs_mmp_clear(fs);
3252 if (journal_size || journal_device) {
3253 rc = add_journal(fs);
3259 if (mount_flags & EXT2_MF_MOUNTED) {
3260 fputs(_("The quota feature may only be changed when "
3261 "the filesystem is unmounted.\n"), stderr);
3265 rc = handle_quota_options(fs);
3273 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3274 __u8 old_uuid[UUID_SIZE];
3276 if (ext2fs_has_feature_stable_inodes(fs->super)) {
3277 fputs(_("Cannot change the UUID of this filesystem "
3278 "because it has the stable_inodes feature "
3279 "flag.\n"), stderr);
3283 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3284 (ext2fs_has_feature_metadata_csum(fs->super) ||
3285 ext2fs_has_feature_ea_inode(fs->super))) {
3286 rc = check_fsck_needed(fs,
3287 _("Setting the UUID on this "
3288 "filesystem could take some time."));
3291 rewrite_checksums = REWRITE_ALL;
3294 if (ext2fs_has_group_desc_csum(fs)) {
3296 * Changing the UUID on a metadata_csum FS requires
3297 * rewriting all metadata, which can race with a
3298 * mounted fs. Don't allow that unless we're saving
3299 * the checksum seed.
3301 if ((mount_flags & EXT2_MF_MOUNTED) &&
3302 !ext2fs_has_feature_csum_seed(fs->super) &&
3303 ext2fs_has_feature_metadata_csum(fs->super)) {
3304 fputs(_("The UUID may only be "
3305 "changed when the filesystem is "
3306 "unmounted.\n"), stderr);
3307 fputs(_("If you only use kernels newer than "
3308 "v4.4, run 'tune2fs -O "
3309 "metadata_csum_seed' and re-run this "
3310 "command.\n"), stderr);
3311 try_confirm_csum_seed_support();
3317 * Determine if the block group checksums are
3318 * correct so we know whether or not to set
3321 for (i = 0; i < fs->group_desc_count; i++)
3322 if (!ext2fs_group_desc_csum_verify(fs, i))
3324 if (i >= fs->group_desc_count)
3328 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3329 if ((strcasecmp(new_UUID, "null") == 0) ||
3330 (strcasecmp(new_UUID, "clear") == 0)) {
3331 uuid_clear(sb->s_uuid);
3332 } else if (strcasecmp(new_UUID, "time") == 0) {
3333 uuid_generate_time(sb->s_uuid);
3334 } else if (strcasecmp(new_UUID, "random") == 0) {
3335 uuid_generate(sb->s_uuid);
3336 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3337 com_err(program_name, 0, "%s",
3338 _("Invalid UUID format\n"));
3342 ext2fs_init_csum_seed(fs);
3344 for (i = 0; i < fs->group_desc_count; i++)
3345 ext2fs_group_desc_csum_set(fs, i);
3346 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3349 /* If this is a journal dev, we need to copy UUID into jsb */
3350 if (!(rc = get_journal_sb(fs, buf))) {
3351 journal_superblock_t *jsb;
3353 jsb = (journal_superblock_t *) buf;
3354 fputs(_("Need to update journal superblock.\n"), stdout);
3355 memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3357 /* Writeback the journal superblock */
3358 if ((rc = io_channel_write_blk64(fs->io,
3359 ext2fs_journal_sb_start(fs->blocksize),
3360 -SUPERBLOCK_SIZE, buf)))
3362 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3365 rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3367 if ((rc = fs_update_journal_user(sb, old_uuid)))
3371 ext2fs_mark_super_dirty(fs);
3375 if (mount_flags & EXT2_MF_MOUNTED) {
3376 fputs(_("The inode size may only be "
3377 "changed when the filesystem is "
3378 "unmounted.\n"), stderr);
3382 if (ext2fs_has_feature_flex_bg(fs->super)) {
3383 fputs(_("Changing the inode size not supported for "
3384 "filesystems with the flex_bg\n"
3385 "feature enabled.\n"),
3391 * We want to update group descriptor also
3392 * with the new free inode count
3394 if (rewrite_checksums)
3395 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3396 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3397 retval = resize_inode(fs, new_inode_size);
3398 if (rewrite_checksums)
3399 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3401 printf(_("Setting inode size %lu\n"),
3403 rewrite_checksums = REWRITE_ALL;
3405 printf("%s", _("Failed to change inode size\n"));
3411 if (rewrite_checksums)
3412 rewrite_metadata_checksums(fs, rewrite_checksums);
3417 sb->s_raid_stride = stride;
3418 ext2fs_mark_super_dirty(fs);
3419 printf(_("Setting stride size to %d\n"), stride);
3421 if (stripe_width_set) {
3422 sb->s_raid_stripe_width = stripe_width;
3423 ext2fs_mark_super_dirty(fs);
3424 printf(_("Setting stripe width to %d\n"), stripe_width);
3426 if (ext_mount_opts) {
3427 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3428 sizeof(fs->super->s_mount_opts));
3429 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3430 ext2fs_mark_super_dirty(fs);
3431 printf(_("Setting extended default mount options to '%s'\n"),
3433 free(ext_mount_opts);
3437 remove_error_table(&et_ext2_error_table);
3441 ext2fs_mmp_stop(fs);
3442 #ifndef BUILD_AS_LIB
3448 convert_64bit(fs, feature_64bit);
3449 return (ext2fs_close_free(&fs) ? 1 : 0);