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>
54 #include <limits.h> /* for PATH_MAX */
55 #ifdef HAVE_SYS_IOCTL_H
56 #include <sys/ioctl.h>
63 #include "ext2fs/ext2_fs.h"
64 #include "ext2fs/ext2fs.h"
65 #include "ext2fs/kernel-jbd.h"
66 #include "et/com_err.h"
67 #include "support/plausible.h"
68 #include "support/quotaio.h"
69 #include "support/devname.h"
70 #include "uuid/uuid.h"
73 #include "blkid/blkid.h"
75 #include "../version.h"
76 #include "support/nls-enable.h"
78 #define QOPT_ENABLE (1)
79 #define QOPT_DISABLE (-1)
81 #ifndef FS_IOC_SETFSLABEL
82 #define FSLABEL_MAX 256
83 #define FS_IOC_SETFSLABEL _IOW(0x94, 50, char[FSLABEL_MAX])
86 #ifndef FS_IOC_GETFSLABEL
87 #define FS_IOC_GETFSLABEL _IOR(0x94, 49, char[FSLABEL_MAX])
96 #ifndef EXT4_IOC_GETFSUUID
97 #define EXT4_IOC_GETFSUUID _IOR('f', 44, struct fsuuid)
100 #ifndef EXT4_IOC_SETFSUUID
101 #define EXT4_IOC_SETFSUUID _IOW('f', 44, struct fsuuid)
104 extern int ask_yn(const char *string, int def);
106 const char *program_name = "tune2fs";
108 char *new_label, *new_last_mounted, *requested_uuid;
110 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
111 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
113 static int clear_mmp;
114 static time_t last_check_time;
115 static int print_label;
116 static int max_mount_count, mount_count, mount_flags;
117 static unsigned long interval;
118 static blk64_t reserved_blocks;
119 static double reserved_ratio;
120 static unsigned long resgid, resuid;
121 static unsigned short errors;
122 static int open_flag;
123 static char *features_cmd;
124 static char *mntopts_cmd;
125 static int stride, stripe_width;
126 static int stride_set, stripe_width_set;
127 static char *extended_cmd;
128 static unsigned long new_inode_size;
129 static char *ext_mount_opts;
130 static int quota_enable[MAXQUOTAS];
131 static int rewrite_checksums;
132 static int feature_64bit;
133 static int fsck_requested;
134 static char *undo_file;
135 int enabling_casefold;
137 int journal_size, journal_fc_size, journal_flags;
138 char *journal_device;
139 static blk64_t journal_location = ~0LL;
140 static e2_blkcnt_t orphan_file_blocks;
142 static struct list_head blk_move_list;
145 struct list_head list;
150 errcode_t ext2fs_run_ext3_journal(ext2_filsys *fs);
152 static const char *fsck_explain = N_("\nThis operation requires a freshly checked filesystem.\n");
154 static const char *please_fsck = N_("Please run e2fsck -f on the filesystem.\n");
155 static const char *please_dir_fsck =
156 N_("Please run e2fsck -fD on the filesystem.\n");
158 #ifdef CONFIG_BUILD_FINDFS
159 void do_findfs(int argc, char **argv);
162 #ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jbd-debug */
163 int journal_enable_debug = -1;
166 static void usage(void)
169 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] [-f] "
171 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
172 "\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n"
173 "\t[-r reserved_blocks_count] [-u user] [-C mount_count]\n"
174 "\t[-L volume_label] [-M last_mounted_dir]\n"
175 "\t[-O [^]feature[,...]] [-Q quota_options]\n"
176 "\t[-E extended-option[,...]] [-T last_check_time] "
177 "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
182 static __u32 ok_features[3] = {
184 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
185 EXT2_FEATURE_COMPAT_DIR_INDEX |
186 EXT4_FEATURE_COMPAT_FAST_COMMIT |
187 EXT4_FEATURE_COMPAT_STABLE_INODES |
188 EXT4_FEATURE_COMPAT_ORPHAN_FILE,
190 EXT2_FEATURE_INCOMPAT_FILETYPE |
191 EXT3_FEATURE_INCOMPAT_EXTENTS |
192 EXT4_FEATURE_INCOMPAT_FLEX_BG |
193 EXT4_FEATURE_INCOMPAT_EA_INODE|
194 EXT4_FEATURE_INCOMPAT_MMP |
195 EXT4_FEATURE_INCOMPAT_64BIT |
196 EXT4_FEATURE_INCOMPAT_ENCRYPT |
197 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
198 EXT4_FEATURE_INCOMPAT_LARGEDIR |
199 EXT4_FEATURE_INCOMPAT_CASEFOLD,
201 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
202 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
203 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
204 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
205 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
206 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
207 EXT4_FEATURE_RO_COMPAT_QUOTA |
208 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
209 EXT4_FEATURE_RO_COMPAT_READONLY |
210 EXT4_FEATURE_RO_COMPAT_PROJECT |
211 EXT4_FEATURE_RO_COMPAT_VERITY
214 static __u32 clear_ok_features[3] = {
216 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
217 EXT2_FEATURE_COMPAT_RESIZE_INODE |
218 EXT2_FEATURE_COMPAT_DIR_INDEX |
219 EXT4_FEATURE_COMPAT_FAST_COMMIT |
220 EXT4_FEATURE_COMPAT_ORPHAN_FILE,
222 EXT2_FEATURE_INCOMPAT_FILETYPE |
223 EXT4_FEATURE_INCOMPAT_FLEX_BG |
224 EXT4_FEATURE_INCOMPAT_MMP |
225 EXT4_FEATURE_INCOMPAT_64BIT |
226 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
227 EXT4_FEATURE_INCOMPAT_CASEFOLD,
229 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
230 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
231 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
232 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
233 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
234 EXT4_FEATURE_RO_COMPAT_QUOTA |
235 EXT4_FEATURE_RO_COMPAT_PROJECT |
236 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
237 EXT4_FEATURE_RO_COMPAT_READONLY
241 * Try to get journal super block if any
243 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
246 journal_superblock_t *jsb;
248 if (!ext2fs_has_feature_journal_dev(jfs->super)) {
249 return EXT2_ET_UNSUPP_FEATURE;
252 /* Get the journal superblock */
253 if ((retval = io_channel_read_blk64(jfs->io,
254 ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
255 com_err(program_name, retval, "%s",
256 _("while reading journal superblock"));
260 jsb = (journal_superblock_t *) buf;
261 if ((jsb->s_header.h_magic != (unsigned)ntohl(JBD2_MAGIC_NUMBER)) ||
262 (jsb->s_header.h_blocktype != (unsigned)ntohl(JBD2_SUPERBLOCK_V2))) {
263 fputs(_("Journal superblock not found!\n"), stderr);
264 return EXT2_ET_BAD_MAGIC;
270 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JBD2_USERS_SIZE],
274 for (i = 0; i < nr_users; i++) {
275 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
276 return &s_users[i * UUID_SIZE];
283 * Remove an external journal from the filesystem
285 static int remove_journal_device(ext2_filsys fs)
289 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
290 journal_superblock_t *jsb;
293 int commit_remove_journal = 0;
297 commit_remove_journal = 1; /* force removal even if error */
299 uuid_unparse(fs->super->s_journal_uuid, buf);
300 journal_path = blkid_get_devname(NULL, "UUID", buf);
304 ext2fs_find_block_device(fs->super->s_journal_dev);
306 goto no_valid_journal;
309 #ifdef CONFIG_TESTIO_DEBUG
310 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
311 io_ptr = test_io_manager;
312 test_io_backing_manager = unix_io_manager;
315 io_ptr = unix_io_manager;
316 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
317 EXT2_FLAG_JOURNAL_DEV_OK, 0,
318 fs->blocksize, io_ptr, &jfs);
320 com_err(program_name, retval, "%s",
321 _("while trying to open external journal"));
322 goto no_valid_journal;
325 if ((retval = get_journal_sb(jfs, buf))) {
326 if (retval == EXT2_ET_UNSUPP_FEATURE)
327 fprintf(stderr, _("%s is not a journal device.\n"),
329 goto no_valid_journal;
332 jsb = (journal_superblock_t *) buf;
333 /* Find the filesystem UUID */
334 nr_users = ntohl(jsb->s_nr_users);
335 if (nr_users > JBD2_USERS_MAX) {
336 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
337 "is too high (%d).\n"), nr_users);
338 commit_remove_journal = 1;
339 goto no_valid_journal;
342 if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
343 fputs(_("Filesystem's UUID not found on journal device.\n"),
345 commit_remove_journal = 1;
346 goto no_valid_journal;
349 for (i = 0; i < nr_users; i++)
350 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
351 jsb->s_nr_users = htonl(nr_users);
353 /* Write back the journal superblock */
354 retval = io_channel_write_blk64(jfs->io,
355 ext2fs_journal_sb_start(fs->blocksize),
356 -SUPERBLOCK_SIZE, buf);
358 com_err(program_name, retval,
359 "while writing journal superblock.");
360 goto no_valid_journal;
363 commit_remove_journal = 1;
366 if (commit_remove_journal == 0) {
367 fputs(_("Cannot locate journal device. It was NOT removed\n"
368 "Use -f option to remove missing journal device.\n"),
372 fs->super->s_journal_dev = 0;
373 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
374 uuid_clear(fs->super->s_journal_uuid);
375 ext2fs_mark_super_dirty(fs);
376 fputs(_("Journal removed\n"), stdout);
382 /* Helper function for remove_journal_inode */
383 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
384 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
385 blk64_t ref_block EXT2FS_ATTR((unused)),
386 int ref_offset EXT2FS_ATTR((unused)),
387 void *private EXT2FS_ATTR((unused)))
393 ext2fs_unmark_block_bitmap2(fs->block_map, block);
394 group = ext2fs_group_of_blk2(fs, block);
395 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
396 ext2fs_group_desc_csum_set(fs, group);
397 ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
402 * Remove the journal inode from the filesystem
404 static errcode_t remove_journal_inode(ext2_filsys fs)
406 struct ext2_inode inode;
408 ext2_ino_t ino = fs->super->s_journal_inum;
410 retval = ext2fs_read_inode(fs, ino, &inode);
412 com_err(program_name, retval, "%s",
413 _("while reading journal inode"));
416 if (ino == EXT2_JOURNAL_INO) {
417 retval = ext2fs_read_bitmaps(fs);
419 com_err(program_name, retval, "%s",
420 _("while reading bitmaps"));
423 retval = ext2fs_block_iterate3(fs, ino,
424 BLOCK_FLAG_READ_ONLY, NULL,
425 release_blocks_proc, NULL);
427 com_err(program_name, retval, "%s",
428 _("while clearing journal inode"));
431 fs->super->s_overhead_clusters -=
432 EXT2FS_NUM_B2C(fs, EXT2_I_SIZE(&inode) / fs->blocksize);
433 memset(&inode, 0, sizeof(inode));
434 ext2fs_mark_bb_dirty(fs);
435 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
437 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
438 retval = ext2fs_write_inode(fs, ino, &inode);
440 com_err(program_name, retval, "%s",
441 _("while writing journal inode"));
444 fs->super->s_journal_inum = 0;
445 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
446 ext2fs_mark_super_dirty(fs);
452 * Update the default mount options
454 static int update_mntopts(ext2_filsys fs, char *mntopts)
456 struct ext2_super_block *sb = fs->super;
458 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
459 fprintf(stderr, _("Invalid mount option set: %s\n"),
463 ext2fs_mark_super_dirty(fs);
468 static int check_fsck_needed(ext2_filsys fs, const char *prompt)
470 /* Refuse to modify anything but a freshly checked valid filesystem. */
471 if (!(fs->super->s_state & EXT2_VALID_FS) ||
472 (fs->super->s_state & EXT2_ERROR_FS) ||
473 (fs->super->s_lastcheck < fs->super->s_mtime)) {
474 puts(_(fsck_explain));
475 puts(_(please_fsck));
476 if (mount_flags & EXT2_MF_READONLY)
477 printf("%s", _("(and reboot afterwards!)\n"));
481 /* Give the admin a few seconds to bail out of a dangerous op. */
482 if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
491 static void request_dir_fsck_afterwards(ext2_filsys fs)
493 static int requested;
498 fs->super->s_state &= ~EXT2_VALID_FS;
499 puts(_(fsck_explain));
500 puts(_(please_dir_fsck));
501 if (mount_flags & EXT2_MF_READONLY)
502 printf("%s", _("(and reboot afterwards!)\n"));
505 static void request_fsck_afterwards(ext2_filsys fs)
507 static int requested = 0;
512 fs->super->s_state &= ~EXT2_VALID_FS;
513 printf("\n%s\n", _(please_fsck));
514 if (mount_flags & EXT2_MF_READONLY)
515 printf("%s", _("(and reboot afterwards!)\n"));
518 static void convert_64bit(ext2_filsys fs, int direction)
521 * Is resize2fs going to demand a fsck run? Might as well tell the
524 if (!fsck_requested &&
525 ((fs->super->s_state & EXT2_ERROR_FS) ||
526 !(fs->super->s_state & EXT2_VALID_FS) ||
527 fs->super->s_lastcheck < fs->super->s_mtime))
528 request_fsck_afterwards(fs);
530 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
531 direction > 0 ? "-b" : "-s", fs->device_name);
533 fprintf(stderr, _("Please run `resize2fs %s %s"),
534 direction > 0 ? "-b" : "-s", fs->device_name);
537 fprintf(stderr, _(" -z \"%s\""), undo_file);
539 fprintf(stderr, _("' to enable 64-bit mode.\n"));
541 fprintf(stderr, _("' to disable 64-bit mode.\n"));
545 * Rewrite directory blocks with checksums
547 struct rewrite_dir_context {
555 static int rewrite_dir_block(ext2_filsys fs,
557 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
558 blk64_t ref_block EXT2FS_ATTR((unused)),
559 int ref_offset EXT2FS_ATTR((unused)),
562 struct ext2_dx_countlimit *dcl = NULL;
563 struct rewrite_dir_context *ctx = priv_data;
564 int dcl_offset, changed = 0;
566 ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
572 * if htree node... Note that if we are clearing htree structures from
573 * the directory, we treat the htree internal block as an ordinary leaf.
574 * The code below will do the right thing and make space for checksum
577 if (ctx->is_htree && !ctx->clear_htree)
578 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
581 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
582 /* Ensure limit is the max size */
583 int max_entries = (fs->blocksize - dcl_offset) /
584 sizeof(struct ext2_dx_entry);
585 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
587 dcl->limit = ext2fs_cpu_to_le16(max_entries);
590 /* If htree block is full then rebuild the dir */
591 if (ext2fs_le16_to_cpu(dcl->count) ==
592 ext2fs_le16_to_cpu(dcl->limit)) {
593 request_dir_fsck_afterwards(fs);
597 * Ensure dcl->limit is small enough to leave room for
600 int max_entries = (fs->blocksize - (dcl_offset +
601 sizeof(struct ext2_dx_tail))) /
602 sizeof(struct ext2_dx_entry);
603 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
604 dcl->limit = ext2fs_cpu_to_le16(max_entries);
605 /* Always rewrite checksum */
609 unsigned int rec_len, name_size;
610 char *top = ctx->buf + fs->blocksize;
611 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
612 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
614 /* Find last and penultimate dirent */
615 while ((char *)de < top) {
616 penultimate_de = last_de;
618 ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
619 if (!ctx->errcode && !rec_len)
620 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
623 de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
625 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
628 name_size = ext2fs_dirent_name_len(last_de);
630 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
633 if (last_de->inode ||
635 rec_len != sizeof(struct ext2_dir_entry_tail))
638 * The last dirent is unused and the right length to
639 * have stored a checksum. Erase it.
641 ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
644 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
647 ext2fs_set_rec_len(fs, rec_len +
648 sizeof(struct ext2_dir_entry_tail),
652 unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
653 struct ext2_dir_entry_tail *t;
656 * If the last dirent looks like the tail, just update
659 if (!last_de->inode &&
660 rec_len == csum_size) {
661 t = (struct ext2_dir_entry_tail *)last_de;
662 t->det_reserved_name_len =
663 EXT2_DIR_NAME_LEN_CSUM;
668 name_size = (name_size & ~3) + 4;
669 /* If there's not enough space for the tail, e2fsck */
670 if (rec_len <= (8 + name_size + csum_size)) {
671 request_dir_fsck_afterwards(fs);
674 /* Shorten that last de and insert the tail */
675 ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
676 t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
677 ext2fs_initialize_dirent_tail(fs, t);
679 /* Always update checksum */
688 ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
696 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
697 struct ext2_inode *inode)
700 struct rewrite_dir_context ctx;
702 retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
706 ctx.is_htree = !!(inode->i_flags & EXT2_INDEX_FL);
707 ctx.clear_htree = !ext2fs_has_feature_dir_index(fs->super);
710 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
711 BLOCK_FLAG_DATA_ONLY,
712 0, rewrite_dir_block, &ctx);
714 ext2fs_free_mem(&ctx.buf);
718 if (ctx.is_htree && ctx.clear_htree) {
719 inode->i_flags &= ~EXT2_INDEX_FL;
720 retval = ext2fs_write_inode(fs, dir, inode);
729 * Context information that does not change across rewrite_one_inode()
732 struct rewrite_context {
734 struct ext2_inode *zero_inode;
739 #define fatal_err(code, args...) \
741 com_err(__func__, code, args); \
745 static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
746 struct ext2_inode *inode)
752 retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
754 fatal_err(retval, "open ea_inode");
755 retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
758 fatal_err(retval, "read ea_inode");
759 retval = ext2fs_file_close(file);
761 fatal_err(retval, "close ea_inode");
763 hash = ext2fs_crc32c_le(ctx->fs->csum_seed,
764 (unsigned char *) ctx->ea_buf, inode->i_size);
765 ext2fs_set_ea_inode_hash(inode, hash);
768 static int update_xattr_entry_hashes(ext2_filsys fs,
769 struct ext2_ext_attr_entry *entry,
770 struct ext2_ext_attr_entry *end)
775 while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
776 if (entry->e_value_inum) {
777 retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
780 fatal_err(retval, "hash ea_inode entry");
783 entry = EXT2_EXT_ATTR_NEXT(entry);
788 static void update_inline_xattr_hashes(struct rewrite_context *ctx,
789 struct ext2_inode_large *inode)
791 struct ext2_ext_attr_entry *start, *end;
794 if (inode->i_extra_isize == 0)
797 if (inode->i_extra_isize & 3 ||
798 inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
799 fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
801 ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
802 inode->i_extra_isize);
803 if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
806 start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
807 end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
809 update_xattr_entry_hashes(ctx->fs, start, end);
812 static void update_block_xattr_hashes(struct rewrite_context *ctx,
815 struct ext2_ext_attr_header *header;
816 struct ext2_ext_attr_entry *start, *end;
818 header = (struct ext2_ext_attr_header *)block_buf;
819 if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
822 start = (struct ext2_ext_attr_entry *)(header+1);
823 end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
825 if (update_xattr_entry_hashes(ctx->fs, start, end))
826 ext2fs_ext_attr_block_rehash(header, end);
829 static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
830 struct ext2_inode *inode)
832 blk64_t file_acl_block;
835 if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
836 if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
838 memset(inode, 0, ctx->inode_size);
841 if (inode->i_flags & EXT4_EA_INODE_FL)
842 update_ea_inode_hash(ctx, ino, inode);
844 if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
845 update_inline_xattr_hashes(ctx,
846 (struct ext2_inode_large *)inode);
848 retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
850 fatal_err(retval, "while writing inode");
852 retval = ext2fs_fix_extents_checksums(ctx->fs, ino, inode);
854 fatal_err(retval, "while rewriting extents");
856 if (LINUX_S_ISDIR(inode->i_mode) &&
857 ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
858 retval = rewrite_directory(ctx->fs, ino, inode);
860 fatal_err(retval, "while rewriting directories");
863 file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
867 retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
870 fatal_err(retval, "while rewriting extended attribute");
872 update_block_xattr_hashes(ctx, ctx->ea_buf);
873 retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
876 fatal_err(retval, "while rewriting extended attribute");
879 #define REWRITE_EA_FL 0x01 /* Rewrite EA inodes */
880 #define REWRITE_DIR_FL 0x02 /* Rewrite directories */
881 #define REWRITE_NONDIR_FL 0x04 /* Rewrite other inodes */
882 #define REWRITE_ALL (REWRITE_EA_FL | REWRITE_DIR_FL | REWRITE_NONDIR_FL)
884 static void rewrite_inodes_pass(struct rewrite_context *ctx, unsigned int flags)
886 ext2_inode_scan scan;
889 struct ext2_inode *inode;
892 retval = ext2fs_get_mem(ctx->inode_size, &inode);
894 fatal_err(retval, "while allocating memory");
896 retval = ext2fs_open_inode_scan(ctx->fs, 0, &scan);
898 fatal_err(retval, "while opening inode scan");
901 retval = ext2fs_get_next_inode_full(scan, &ino, inode,
904 fatal_err(retval, "while getting next inode");
909 if (inode->i_flags & EXT4_EA_INODE_FL) {
910 if (flags & REWRITE_EA_FL)
912 } else if (LINUX_S_ISDIR(inode->i_mode)) {
913 if (flags & REWRITE_DIR_FL)
916 if (flags & REWRITE_NONDIR_FL)
920 rewrite_one_inode(ctx, ino, inode);
922 ext2fs_close_inode_scan(scan);
923 ext2fs_free_mem(&inode);
927 * Forcibly rewrite checksums in inodes specified by 'flags'
929 static void rewrite_inodes(ext2_filsys fs, unsigned int flags)
931 struct rewrite_context ctx = {
933 .inode_size = EXT2_INODE_SIZE(fs->super),
937 if (fs->super->s_creator_os == EXT2_OS_HURD)
940 retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
942 fatal_err(retval, "while allocating memory");
944 retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
946 fatal_err(retval, "while allocating memory");
949 * Extended attribute inodes have a lookup hash that needs to be
950 * recalculated with the new csum_seed. Other inodes referencing xattr
951 * inodes need this value to be up to date. That's why we do two passes:
953 * pass 1: update xattr inodes to update their lookup hash as well as
956 * pass 2: go over other inodes to update their checksums.
958 if (ext2fs_has_feature_ea_inode(fs->super) && (flags & REWRITE_EA_FL))
959 rewrite_inodes_pass(&ctx, REWRITE_EA_FL);
960 flags &= ~REWRITE_EA_FL;
961 rewrite_inodes_pass(&ctx, flags);
963 ext2fs_free_mem(&ctx.zero_inode);
964 ext2fs_free_mem(&ctx.ea_buf);
967 static errcode_t rewrite_metadata_checksums(ext2_filsys fs, unsigned int flags)
972 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
973 ext2fs_init_csum_seed(fs);
974 for (i = 0; i < fs->group_desc_count; i++)
975 ext2fs_group_desc_csum_set(fs, i);
976 retval = ext2fs_read_bitmaps(fs);
978 fatal_err(retval, "while reading bitmaps");
979 rewrite_inodes(fs, flags);
980 ext2fs_mark_ib_dirty(fs);
981 ext2fs_mark_bb_dirty(fs);
982 retval = ext2fs_mmp_update2(fs, 1);
985 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
986 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
987 if (ext2fs_has_feature_metadata_csum(fs->super))
988 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
990 fs->super->s_checksum_type = 0;
991 ext2fs_mark_super_dirty(fs);
995 static void enable_uninit_bg(ext2_filsys fs)
997 struct ext2_group_desc *gd;
1000 for (i = 0; i < fs->group_desc_count; i++) {
1001 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1002 gd->bg_itable_unused = 0;
1003 gd->bg_flags = EXT2_BG_INODE_ZEROED;
1004 ext2fs_group_desc_csum_set(fs, i);
1006 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1009 static errcode_t zero_empty_inodes(ext2_filsys fs)
1011 int length = EXT2_INODE_SIZE(fs->super);
1012 struct ext2_inode *inode = NULL;
1013 ext2_inode_scan scan;
1017 retval = ext2fs_open_inode_scan(fs, 0, &scan);
1021 retval = ext2fs_get_mem(length, &inode);
1026 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
1031 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
1032 memset(inode, 0, length);
1033 retval = ext2fs_write_inode_full(fs, ino, inode,
1041 ext2fs_free_mem(&inode);
1042 ext2fs_close_inode_scan(scan);
1046 static int has_casefold_inode(ext2_filsys fs)
1048 int length = EXT2_INODE_SIZE(fs->super);
1049 struct ext2_inode *inode = NULL;
1050 ext2_inode_scan scan;
1053 int found_casefold = 0;
1055 retval = ext2fs_get_mem(length, &inode);
1057 fatal_err(retval, "while allocating memory");
1059 retval = ext2fs_open_inode_scan(fs, 0, &scan);
1061 fatal_err(retval, "while opening inode scan");
1064 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
1066 fatal_err(retval, "while getting next inode");
1070 if(inode->i_flags & EXT4_CASEFOLD_FL) {
1076 ext2fs_free_mem(&inode);
1077 ext2fs_close_inode_scan(scan);
1078 return found_casefold;
1081 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
1083 struct ext2_group_desc *gd;
1088 /* Load bitmaps to ensure that the uninit ones get written out */
1089 fs->super->s_feature_ro_compat |= csum_feature_flag;
1090 retval = ext2fs_read_bitmaps(fs);
1091 fs->super->s_feature_ro_compat &= ~csum_feature_flag;
1093 com_err("disable_uninit_bg", retval,
1094 "while reading bitmaps");
1095 request_fsck_afterwards(fs);
1098 ext2fs_mark_ib_dirty(fs);
1099 ext2fs_mark_bb_dirty(fs);
1101 /* If we're only turning off uninit_bg, zero the inodes */
1102 if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1103 retval = zero_empty_inodes(fs);
1105 com_err("disable_uninit_bg", retval,
1106 "while zeroing unused inodes");
1107 request_fsck_afterwards(fs);
1112 /* The bbitmap is zeroed; we must mark group metadata blocks in use */
1113 for (i = 0; i < fs->group_desc_count; i++) {
1114 b = ext2fs_block_bitmap_loc(fs, i);
1115 ext2fs_mark_block_bitmap2(fs->block_map, b);
1116 b = ext2fs_inode_bitmap_loc(fs, i);
1117 ext2fs_mark_block_bitmap2(fs->block_map, b);
1119 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
1120 if (retval == 0 && b)
1121 ext2fs_mark_block_bitmap2(fs->block_map, b);
1122 if (retval == 0 && c)
1123 ext2fs_mark_block_bitmap2(fs->block_map, c);
1124 if (retval == 0 && d)
1125 ext2fs_mark_block_bitmap2(fs->block_map, d);
1127 com_err("disable_uninit_bg", retval,
1128 "while initializing block bitmaps");
1129 request_fsck_afterwards(fs);
1132 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1133 gd->bg_itable_unused = 0;
1135 ext2fs_group_desc_csum_set(fs, i);
1137 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1138 ext2fs_mark_super_dirty(fs);
1144 try_confirm_csum_seed_support(void)
1146 if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
1147 fputs(_("WARNING: Could not confirm kernel support for "
1148 "metadata_csum_seed.\n This requires Linux >= "
1149 "v4.4.\n"), stderr);
1153 * Update the feature set as provided by the user.
1155 static int update_feature_set(ext2_filsys fs, char *features)
1157 struct ext2_super_block *sb = fs->super;
1158 __u32 old_features[3];
1160 unsigned int mask_err;
1162 enum quota_type qtype;
1164 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
1165 ((&sb->s_feature_compat)[(type)] & (mask)))
1166 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
1167 !((&sb->s_feature_compat)[(type)] & (mask)))
1168 #define FEATURE_CHANGED(type, mask) ((mask) & \
1169 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
1171 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1172 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1173 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1175 if (e2p_edit_feature2(features, &sb->s_feature_compat,
1176 ok_features, clear_ok_features,
1177 &type_err, &mask_err)) {
1180 _("Invalid filesystem option set: %s\n"),
1182 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1183 fprintf(stderr, _("Clearing filesystem feature '%s' "
1184 "not supported.\n"),
1185 e2p_feature2string(type_err &
1186 E2P_FEATURE_TYPE_MASK,
1189 fprintf(stderr, _("Setting filesystem feature '%s' "
1190 "not supported.\n"),
1191 e2p_feature2string(type_err, mask_err));
1195 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1196 if ((mount_flags & EXT2_MF_MOUNTED) &&
1197 !(mount_flags & EXT2_MF_READONLY)) {
1198 fputs(_("The has_journal feature may only be "
1199 "cleared when the filesystem is\n"
1200 "unmounted or mounted "
1201 "read-only.\n"), stderr);
1204 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1206 fputs(_("The needs_recovery flag is set. "
1207 "Please run e2fsck before clearing\n"
1208 "the has_journal flag.\n"), stderr);
1211 if (sb->s_journal_inum) {
1212 if (remove_journal_inode(fs))
1215 if (sb->s_journal_dev) {
1216 if (remove_journal_device(fs))
1221 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT4_FEATURE_COMPAT_ORPHAN_FILE)) {
1224 if (mount_flags & EXT2_MF_MOUNTED) {
1225 fputs(_("The orphan_file feature may only be cleared "
1226 "when the filesystem is unmounted.\n"), stderr);
1229 if (ext2fs_has_feature_orphan_present(sb) && f_flag < 2) {
1230 fputs(_("The orphan_present feature is set. Please "
1231 "run e2fsck before clearing orphan_file "
1236 err = ext2fs_read_bitmaps(fs);
1238 com_err(program_name, err, "%s",
1239 _("while loading bitmaps"));
1242 err = ext2fs_truncate_orphan_file(fs);
1244 com_err(program_name, err,
1245 _("\n\twhile trying to delete orphan file\n"));
1248 ino = sb->s_orphan_file_inum;
1249 sb->s_orphan_file_inum = 0;
1250 ext2fs_inode_alloc_stats2(fs, ino, -1, 0);
1251 ext2fs_clear_feature_orphan_file(sb);
1252 ext2fs_clear_feature_orphan_present(sb);
1253 ext2fs_mark_super_dirty(fs);
1256 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT4_FEATURE_COMPAT_ORPHAN_FILE)) {
1257 if (!ext2fs_has_feature_journal(sb)) {
1258 fputs(_("orphan_file feature can be set only for "
1259 "filesystems with journal.\n"), stderr);
1263 * If adding an orphan file, let the create orphan file
1264 * code below handle setting the flag and creating it.
1265 * We supply a default size if necessary.
1267 orphan_file_blocks = ext2fs_default_orphan_file_blocks(fs);
1268 ext2fs_set_feature_orphan_file(sb);
1271 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1272 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1273 if (ext2fs_has_feature_meta_bg(sb)) {
1274 fputs(_("Setting filesystem feature 'sparse_super' "
1275 "not supported\nfor filesystems with "
1276 "the meta_bg feature enabled.\n"),
1282 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1285 if ((mount_flags & EXT2_MF_MOUNTED) ||
1286 (mount_flags & EXT2_MF_READONLY)) {
1287 fputs(_("The multiple mount protection feature can't\n"
1288 "be set if the filesystem is mounted or\n"
1289 "read-only.\n"), stderr);
1293 error = ext2fs_mmp_init(fs);
1295 fputs(_("\nError while enabling multiple mount "
1296 "protection feature."), stderr);
1301 * We want to update group desc with the new free blocks count
1303 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1305 printf(_("Multiple mount protection has been enabled "
1306 "with update interval %ds.\n"),
1307 sb->s_mmp_update_interval);
1310 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1313 if (mount_flags & EXT2_MF_READONLY) {
1314 fputs(_("The multiple mount protection feature cannot\n"
1315 "be disabled if the filesystem is readonly.\n"),
1320 error = ext2fs_read_bitmaps(fs);
1322 fputs(_("Error while reading bitmaps\n"), stderr);
1326 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1328 struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1330 if (error == EXT2_ET_MMP_MAGIC_INVALID)
1331 printf(_("Magic number in MMP block does not "
1332 "match. expected: %x, actual: %x\n"),
1333 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1335 com_err(program_name, error, "%s",
1336 _("while reading MMP block."));
1340 /* We need to force out the group descriptors as well */
1341 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1342 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1344 sb->s_mmp_block = 0;
1345 sb->s_mmp_update_interval = 0;
1348 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1350 * If adding a journal flag, let the create journal
1351 * code below handle setting the flag and creating the
1352 * journal. We supply a default size if necessary.
1356 ext2fs_clear_feature_journal(sb);
1359 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1360 if (!sb->s_def_hash_version)
1361 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1362 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1363 uuid_generate((unsigned char *) sb->s_hash_seed);
1366 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX) &&
1367 ext2fs_has_feature_metadata_csum(sb)) {
1368 if (check_fsck_needed(fs,
1369 _("Disabling directory index on filesystem with "
1370 "checksums could take some time.")))
1372 if (mount_flags & EXT2_MF_MOUNTED) {
1373 fputs(_("Cannot disable dir_index on a mounted "
1374 "filesystem!\n"), stderr);
1378 * Clearing dir_index on checksummed filesystem requires
1379 * rewriting all directories to update checksums.
1381 rewrite_checksums |= REWRITE_DIR_FL;
1384 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1385 if (ext2fs_check_desc(fs)) {
1386 fputs(_("Clearing the flex_bg flag would "
1387 "cause the the filesystem to be\n"
1388 "inconsistent.\n"), stderr);
1393 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1394 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1395 if ((mount_flags & EXT2_MF_MOUNTED) &&
1396 !(mount_flags & EXT2_MF_READONLY)) {
1397 fputs(_("The huge_file feature may only be "
1398 "cleared when the filesystem is\n"
1399 "unmounted or mounted "
1400 "read-only.\n"), stderr);
1405 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1406 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1407 if (check_fsck_needed(fs,
1408 _("Enabling checksums could take some time.")))
1410 if (mount_flags & EXT2_MF_MOUNTED) {
1411 fputs(_("Cannot enable metadata_csum on a mounted "
1412 "filesystem!\n"), stderr);
1415 if (!ext2fs_has_feature_extents(fs->super))
1417 _("Extents are not enabled. The file extent "
1418 "tree can be checksummed, whereas block maps "
1419 "cannot. Not enabling extents reduces the "
1420 "coverage of metadata checksumming. "
1421 "Re-run with -O extent to rectify.\n"));
1422 if (!ext2fs_has_feature_64bit(fs->super))
1424 _("64-bit filesystem support is not enabled. "
1425 "The larger fields afforded by this feature "
1426 "enable full-strength checksumming. "
1427 "Run resize2fs -b to rectify.\n"));
1428 rewrite_checksums = REWRITE_ALL;
1429 /* metadata_csum supersedes uninit_bg */
1430 ext2fs_clear_feature_gdt_csum(fs->super);
1432 /* if uninit_bg was previously off, rewrite group desc */
1433 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1434 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1435 enable_uninit_bg(fs);
1438 * Since metadata_csum supersedes uninit_bg, pretend like
1439 * uninit_bg has been off all along.
1441 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1442 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1445 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1446 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1447 __u32 test_features[3];
1449 if (check_fsck_needed(fs,
1450 _("Disabling checksums could take some time.")))
1452 if (mount_flags & EXT2_MF_MOUNTED) {
1453 fputs(_("Cannot disable metadata_csum on a mounted "
1454 "filesystem!\n"), stderr);
1457 rewrite_checksums = REWRITE_ALL;
1459 /* Enable uninit_bg unless the user expressly turned it off */
1460 memcpy(test_features, old_features, sizeof(test_features));
1461 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1462 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1463 e2p_edit_feature2(features, test_features, ok_features,
1464 clear_ok_features, NULL, NULL);
1465 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1466 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1467 ext2fs_set_feature_gdt_csum(fs->super);
1470 * If we're turning off metadata_csum and not turning on
1471 * uninit_bg, rewrite group desc.
1473 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1474 err = disable_uninit_bg(fs,
1475 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1480 * metadata_csum previously provided uninit_bg, so if
1481 * we're also setting the uninit_bg feature bit,
1482 * pretend like it was previously enabled. Checksums
1483 * will be rewritten with crc16 later.
1485 old_features[E2P_FEATURE_RO_INCOMPAT] |=
1486 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1487 fs->super->s_checksum_seed = 0;
1488 ext2fs_clear_feature_csum_seed(fs->super);
1491 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1492 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1493 if (mount_flags & EXT2_MF_MOUNTED) {
1494 fputs(_("Cannot enable uninit_bg on a mounted "
1495 "filesystem!\n"), stderr);
1499 /* Do not enable uninit_bg when metadata_csum enabled */
1500 if (ext2fs_has_feature_metadata_csum(fs->super))
1501 ext2fs_clear_feature_gdt_csum(fs->super);
1503 enable_uninit_bg(fs);
1506 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1507 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1508 if (mount_flags & EXT2_MF_MOUNTED) {
1509 fputs(_("Cannot disable uninit_bg on a mounted "
1510 "filesystem!\n"), stderr);
1514 err = disable_uninit_bg(fs,
1515 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1521 * We don't actually toggle 64bit; resize2fs does that. But this
1522 * must come after the metadata_csum feature_on so that it won't
1523 * complain about the lack of 64bit.
1525 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1526 EXT4_FEATURE_INCOMPAT_64BIT)) {
1527 if (mount_flags & EXT2_MF_MOUNTED) {
1528 fprintf(stderr, _("Cannot enable 64-bit mode "
1529 "while mounted!\n"));
1532 ext2fs_clear_feature_64bit(sb);
1535 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1536 EXT4_FEATURE_INCOMPAT_64BIT)) {
1537 if (mount_flags & EXT2_MF_MOUNTED) {
1538 fprintf(stderr, _("Cannot disable 64-bit mode "
1539 "while mounted!\n"));
1542 ext2fs_set_feature_64bit(sb);
1546 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1547 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1549 * Set the Q_flag here and handle the quota options in the code
1554 /* Enable usr/grp quota by default */
1555 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1556 if (qtype != PRJQUOTA)
1557 quota_enable[qtype] = QOPT_ENABLE;
1559 quota_enable[qtype] = QOPT_DISABLE;
1562 ext2fs_clear_feature_quota(sb);
1565 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1566 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1567 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1568 fprintf(stderr, _("Cannot enable project feature; "
1569 "inode size too small.\n"));
1573 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1576 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1577 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1579 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1582 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1583 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1585 * Set the Q_flag here and handle the quota options in the code
1589 fputs(_("\nWarning: '^quota' option overrides '-Q'"
1590 "arguments.\n"), stderr);
1592 /* Disable all quota by default */
1593 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1594 quota_enable[qtype] = QOPT_DISABLE;
1597 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1598 fs->super->s_encrypt_algos[0] =
1599 EXT4_ENCRYPTION_MODE_AES_256_XTS;
1600 fs->super->s_encrypt_algos[1] =
1601 EXT4_ENCRYPTION_MODE_AES_256_CTS;
1604 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_CASEFOLD)) {
1605 if (mount_flags & EXT2_MF_MOUNTED) {
1606 fputs(_("The casefold feature may only be enabled when "
1607 "the filesystem is unmounted.\n"), stderr);
1610 fs->super->s_encoding = EXT4_ENC_UTF8_12_1;
1611 fs->super->s_encoding_flags = e2p_get_encoding_flags(EXT4_ENC_UTF8_12_1);
1612 enabling_casefold = 1;
1615 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_CASEFOLD)) {
1616 if (mount_flags & EXT2_MF_MOUNTED) {
1617 fputs(_("The casefold feature may only be disabled when "
1618 "the filesystem is unmounted.\n"), stderr);
1621 if (has_casefold_inode(fs)) {
1622 fputs(_("The casefold feature can't be cleared when "
1623 "there are inodes with +F flag.\n"), stderr);
1626 fs->super->s_encoding = 0;
1627 fs->super->s_encoding_flags = 0;
1628 enabling_casefold = 0;
1631 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1632 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1633 if (!ext2fs_has_feature_metadata_csum(sb)) {
1634 fputs(_("Setting feature 'metadata_csum_seed' "
1635 "is only supported\non filesystems with "
1636 "the metadata_csum feature enabled.\n"),
1640 try_confirm_csum_seed_support();
1641 fs->super->s_checksum_seed = fs->csum_seed;
1644 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1645 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1648 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1649 sizeof(fs->super->s_uuid));
1650 if (fs->super->s_checksum_seed != uuid_seed) {
1651 if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
1652 fputs(_("UUID has changed since enabling "
1653 "metadata_csum. Filesystem must be unmounted "
1654 "\nto safely rewrite all metadata to match the new UUID.\n"),
1658 if (check_fsck_needed(fs, _("Recalculating checksums "
1659 "could take some time.")))
1661 rewrite_checksums = REWRITE_ALL;
1665 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1666 (sb->s_feature_compat || sb->s_feature_ro_compat ||
1667 sb->s_feature_incompat))
1668 ext2fs_update_dynamic_rev(fs);
1670 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1671 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1672 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1673 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1674 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1675 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1676 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1677 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1678 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1679 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1680 request_fsck_afterwards(fs);
1682 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1683 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1684 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1685 ext2fs_mark_super_dirty(fs);
1691 * Add a journal to the filesystem.
1693 static int add_journal(ext2_filsys fs)
1695 struct ext2fs_journal_params jparams;
1700 if (ext2fs_has_feature_journal(fs->super)) {
1701 fputs(_("The filesystem already has a journal.\n"), stderr);
1704 if (journal_device) {
1705 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1707 proceed_question(-1);
1708 check_mount(journal_device, 0, _("journal"));
1709 #ifdef CONFIG_TESTIO_DEBUG
1710 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1711 io_ptr = test_io_manager;
1712 test_io_backing_manager = unix_io_manager;
1715 io_ptr = unix_io_manager;
1716 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1717 EXT2_FLAG_JOURNAL_DEV_OK, 0,
1718 fs->blocksize, io_ptr, &jfs);
1720 com_err(program_name, retval,
1721 _("\n\twhile trying to open journal on %s\n"),
1725 printf(_("Creating journal on device %s: "),
1729 retval = ext2fs_add_journal_device(fs, jfs);
1730 ext2fs_close_free(&jfs);
1732 com_err(program_name, retval,
1733 _("while adding filesystem to journal on %s"),
1737 fputs(_("done\n"), stdout);
1738 } else if (journal_size) {
1739 fputs(_("Creating journal inode: "), stdout);
1741 figure_journal_size(&jparams, journal_size, journal_fc_size, fs);
1743 if (journal_location_string)
1745 parse_num_blocks2(journal_location_string,
1746 fs->super->s_log_block_size);
1747 retval = ext2fs_add_journal_inode3(fs, &jparams,
1751 fprintf(stderr, "\n");
1752 com_err(program_name, retval, "%s",
1753 _("\n\twhile trying to create journal file"));
1756 fs->super->s_overhead_clusters += EXT2FS_NUM_B2C(fs,
1757 jparams.num_journal_blocks + jparams.num_fc_blocks);
1758 ext2fs_mark_super_dirty(fs);
1759 fputs(_("done\n"), stdout);
1762 * If the filesystem wasn't mounted, we need to force
1763 * the block group descriptors out.
1765 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1766 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1768 print_check_message(fs->super->s_max_mnt_count,
1769 fs->super->s_checkinterval);
1773 free(journal_device);
1777 static int handle_quota_options(ext2_filsys fs)
1782 enum quota_type qtype;
1783 unsigned int qtype_bits = 0;
1786 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1787 if (quota_enable[qtype] != 0)
1789 if (qtype == MAXQUOTAS)
1790 /* Nothing to do. */
1793 if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1794 fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1795 fprintf(stderr, _("Cannot enable project quota; "
1796 "inode size too small.\n"));
1800 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1801 if (quota_enable[qtype] == QOPT_ENABLE)
1802 qtype_bits |= 1 << qtype;
1805 retval = quota_init_context(&qctx, fs, qtype_bits);
1807 com_err(program_name, retval,
1808 _("while initializing quota context in support library"));
1813 quota_compute_usage(qctx);
1815 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1816 if (quota_enable[qtype] == QOPT_ENABLE &&
1817 *quota_sb_inump(fs->super, qtype) == 0) {
1818 if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1819 retval = quota_read_all_dquots(qctx, qf_ino,
1823 com_err(program_name, retval,
1824 _("while updating quota limits (%d)"),
1827 quota_release_context(&qctx);
1831 retval = quota_write_inode(qctx, 1 << qtype);
1833 com_err(program_name, retval,
1834 _("while writing quota file (%d)"),
1838 /* Enable Quota feature if one of quota enabled */
1839 if (!ext2fs_has_feature_quota(fs->super)) {
1840 ext2fs_set_feature_quota(fs->super);
1843 if (qtype == PRJQUOTA &&
1844 !ext2fs_has_feature_project(fs->super)) {
1845 ext2fs_set_feature_project(fs->super);
1848 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1849 retval = quota_remove_inode(fs, qtype);
1851 com_err(program_name, retval,
1852 _("while removing quota file (%d)"),
1856 if (qtype == PRJQUOTA) {
1857 ext2fs_clear_feature_project(fs->super);
1863 quota_release_context(&qctx);
1864 /* Clear Quota feature if all quota types disabled. */
1866 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1867 if (*quota_sb_inump(fs->super, qtype))
1869 if (qtype == MAXQUOTAS) {
1870 ext2fs_clear_feature_quota(fs->super);
1876 ext2fs_mark_super_dirty(fs);
1880 static int option_handle_function(char *token)
1882 if (strncmp(token, "usr", 3) == 0) {
1883 quota_enable[USRQUOTA] = QOPT_ENABLE;
1884 } else if (strncmp(token, "^usr", 4) == 0) {
1885 quota_enable[USRQUOTA] = QOPT_DISABLE;
1886 } else if (strncmp(token, "grp", 3) == 0) {
1887 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1888 } else if (strncmp(token, "^grp", 4) == 0) {
1889 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1890 } else if (strncmp(token, "prj", 3) == 0) {
1891 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1892 } else if (strncmp(token, "^prj", 4) == 0) {
1893 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1895 fputs(_("\nBad quota options specified.\n\n"
1896 "Following valid quota options are available "
1897 "(pass by separating with comma):\n"
1907 static void parse_e2label_options(int argc, char ** argv)
1909 if ((argc < 2) || (argc > 3)) {
1910 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1913 io_options = strchr(argv[1], '?');
1916 device_name = get_devname(NULL, argv[1], NULL);
1918 com_err("e2label", 0, _("Unable to resolve '%s'"),
1922 open_flag = EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_SUPER_ONLY;
1924 open_flag |= EXT2_FLAG_RW;
1926 new_label = argv[2];
1931 static time_t parse_time(char *str)
1935 if (strcmp(str, "now") == 0) {
1938 memset(&ts, 0, sizeof(ts));
1939 #ifdef HAVE_STRPTIME
1940 strptime(str, "%Y%m%d%H%M%S", &ts);
1942 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1943 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1946 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1947 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1948 ts.tm_min > 59 || ts.tm_sec > 61)
1951 if (ts.tm_mday == 0) {
1952 com_err(program_name, 0,
1953 _("Couldn't parse date/time specifier: %s"),
1958 return (mktime(&ts));
1961 static void parse_tune2fs_options(int argc, char **argv)
1968 char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1971 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1972 while ((c = getopt(argc, argv, optstring)) != EOF)
1975 open_flag = EXT2_FLAG_RW;
1977 if (strcmp(optarg, "random") == 0) {
1978 max_mount_count = 65536;
1981 max_mount_count = strtol(optarg, &tmp, 0);
1982 if (*tmp || max_mount_count > 16000 ||
1983 max_mount_count < -16000) {
1984 com_err(program_name, 0,
1985 _("bad mounts count - %s"),
1989 if (max_mount_count == 0)
1990 max_mount_count = -1;
1993 mount_count = strtoul(optarg, &tmp, 0);
1994 if (*tmp || mount_count > 16000) {
1995 com_err(program_name, 0,
1996 _("bad mounts count - %s"),
2001 open_flag = EXT2_FLAG_RW;
2004 if (strcmp(optarg, "continue") == 0)
2005 errors = EXT2_ERRORS_CONTINUE;
2006 else if (strcmp(optarg, "remount-ro") == 0)
2007 errors = EXT2_ERRORS_RO;
2008 else if (strcmp(optarg, "panic") == 0)
2009 errors = EXT2_ERRORS_PANIC;
2011 com_err(program_name, 0,
2012 _("bad error behavior - %s"),
2017 open_flag = EXT2_FLAG_RW;
2020 extended_cmd = optarg;
2021 open_flag |= EXT2_FLAG_RW;
2023 case 'f': /* Force */
2027 resgid = strtoul(optarg, &tmp, 0);
2029 gr = getgrnam(optarg);
2033 resgid = gr->gr_gid;
2038 com_err(program_name, 0,
2039 _("bad gid/group name - %s"),
2044 open_flag = EXT2_FLAG_RW;
2047 interval = strtoul(optarg, &tmp, 0);
2054 case 'D': /* days */
2060 case 'M': /* months! */
2061 interval *= 86400 * 30;
2065 case 'W': /* weeks */
2066 interval *= 86400 * 7;
2071 com_err(program_name, 0,
2072 _("bad interval - %s"), optarg);
2076 open_flag = EXT2_FLAG_RW;
2081 open_flag = EXT2_FLAG_RW;
2084 parse_journal_opts(optarg);
2085 open_flag = EXT2_FLAG_RW;
2093 open_flag |= EXT2_FLAG_RW |
2094 EXT2_FLAG_JOURNAL_DEV_OK;
2097 reserved_ratio = strtod(optarg, &tmp);
2098 if (*tmp || reserved_ratio > 50 ||
2099 reserved_ratio < 0) {
2100 com_err(program_name, 0,
2101 _("bad reserved block ratio - %s"),
2106 open_flag = EXT2_FLAG_RW;
2109 new_last_mounted = optarg;
2111 open_flag = EXT2_FLAG_RW;
2115 com_err(program_name, 0, "%s",
2116 _("-o may only be specified once"));
2119 mntopts_cmd = optarg;
2120 open_flag = EXT2_FLAG_RW;
2124 com_err(program_name, 0, "%s",
2125 _("-O may only be specified once"));
2128 features_cmd = optarg;
2129 open_flag = EXT2_FLAG_RW;
2133 ret = parse_quota_opts(optarg, option_handle_function);
2136 open_flag = EXT2_FLAG_RW;
2139 reserved_blocks = strtoul(optarg, &tmp, 0);
2141 com_err(program_name, 0,
2142 _("bad reserved blocks count - %s"),
2147 open_flag = EXT2_FLAG_RW;
2149 case 's': /* Deprecated */
2150 s_flag = atoi(optarg);
2151 open_flag = EXT2_FLAG_RW;
2155 last_check_time = parse_time(optarg);
2156 open_flag = EXT2_FLAG_RW;
2159 resuid = strtoul(optarg, &tmp, 0);
2161 pw = getpwnam(optarg);
2165 resuid = pw->pw_uid;
2170 com_err(program_name, 0,
2171 _("bad uid/user name - %s"),
2176 open_flag = EXT2_FLAG_RW;
2179 requested_uuid = optarg;
2181 open_flag = EXT2_FLAG_RW |
2182 EXT2_FLAG_JOURNAL_DEV_OK;
2185 new_inode_size = strtoul(optarg, &tmp, 0);
2187 com_err(program_name, 0,
2188 _("bad inode size - %s"),
2192 if (!((new_inode_size &
2193 (new_inode_size - 1)) == 0)) {
2194 com_err(program_name, 0,
2195 _("Inode size must be a "
2196 "power of two- %s"),
2200 open_flag = EXT2_FLAG_RW;
2209 if (optind < argc - 1 || optind == argc)
2211 if (!open_flag && !l_flag)
2213 io_options = strchr(argv[optind], '?');
2216 device_name = get_devname(NULL, argv[optind], NULL);
2218 com_err(program_name, 0, _("Unable to resolve '%s'"),
2224 #ifdef CONFIG_BUILD_FINDFS
2225 void do_findfs(int argc, char **argv)
2230 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
2231 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
2234 dev = blkid_get_devname(NULL, argv[1], NULL);
2236 com_err("findfs", 0, _("Unable to resolve '%s'"),
2245 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2247 struct ext2_super_block *sb = fs->super;
2248 char *buf, *token, *next, *p, *arg;
2252 char *encoding_flags = NULL;
2255 buf = malloc(len+1);
2257 fprintf(stderr, "%s",
2258 _("Couldn't allocate memory to parse options!\n"));
2262 for (token = buf; token && *token; token = next) {
2263 p = strchr(token, ',');
2269 arg = strchr(token, '=');
2274 if (strcmp(token, "clear-mmp") == 0 ||
2275 strcmp(token, "clear_mmp") == 0) {
2277 } else if (strcmp(token, "mmp_update_interval") == 0) {
2283 intv = strtoul(arg, &p, 0);
2286 _("Invalid mmp_update_interval: %s\n"),
2292 intv = EXT4_MMP_UPDATE_INTERVAL;
2293 } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2295 _("mmp_update_interval too big: %lu\n"),
2300 printf(P_("Setting multiple mount protection update "
2301 "interval to %lu second\n",
2302 "Setting multiple mount protection update "
2303 "interval to %lu seconds\n", intv),
2305 sb->s_mmp_update_interval = intv;
2306 ext2fs_mark_super_dirty(fs);
2307 } else if (!strcmp(token, "force_fsck")) {
2308 sb->s_state |= EXT2_ERROR_FS;
2309 printf(_("Setting filesystem error flag to force fsck.\n"));
2310 ext2fs_mark_super_dirty(fs);
2311 } else if (!strcmp(token, "test_fs")) {
2312 sb->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2313 printf("Setting test filesystem flag\n");
2314 ext2fs_mark_super_dirty(fs);
2315 } else if (!strcmp(token, "^test_fs")) {
2316 sb->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2317 printf("Clearing test filesystem flag\n");
2318 ext2fs_mark_super_dirty(fs);
2319 } else if (strcmp(token, "stride") == 0) {
2324 stride = strtoul(arg, &p, 0);
2327 _("Invalid RAID stride: %s\n"),
2333 } else if (strcmp(token, "stripe-width") == 0 ||
2334 strcmp(token, "stripe_width") == 0) {
2339 stripe_width = strtoul(arg, &p, 0);
2342 _("Invalid RAID stripe-width: %s\n"),
2347 stripe_width_set = 1;
2348 } else if (strcmp(token, "hash_alg") == 0 ||
2349 strcmp(token, "hash-alg") == 0) {
2354 hash_alg = e2p_string2hash(arg);
2357 _("Invalid hash algorithm: %s\n"),
2362 sb->s_def_hash_version = hash_alg;
2363 printf(_("Setting default hash algorithm "
2366 ext2fs_mark_super_dirty(fs);
2367 } else if (!strcmp(token, "mount_opts")) {
2372 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2374 "Extended mount options too long\n");
2377 ext_mount_opts = strdup(arg);
2378 } else if (!strcmp(token, "encoding")) {
2383 if (mount_flags & EXT2_MF_MOUNTED) {
2384 fputs(_("The casefold feature may only be enabled when "
2385 "the filesystem is unmounted.\n"), stderr);
2389 if (ext2fs_has_feature_casefold(sb) && !enabling_casefold) {
2390 fprintf(stderr, _("Cannot alter existing encoding\n"));
2394 encoding = e2p_str2encoding(arg);
2396 fprintf(stderr, _("Invalid encoding: %s\n"), arg);
2400 enabling_casefold = 1;
2401 sb->s_encoding = encoding;
2402 printf(_("Setting encoding to '%s'\n"), arg);
2403 sb->s_encoding_flags =
2404 e2p_get_encoding_flags(sb->s_encoding);
2405 } else if (!strcmp(token, "encoding_flags")) {
2410 encoding_flags = arg;
2411 } else if (!strcmp(token, "orphan_file_size")) {
2416 orphan_file_blocks = parse_num_blocks2(arg,
2417 fs->super->s_log_block_size);
2419 if (orphan_file_blocks < 1) {
2421 _("Invalid size of orphan file %s\n"),
2430 if (encoding > 0 && !r_usage) {
2431 sb->s_encoding_flags =
2432 e2p_get_encoding_flags(sb->s_encoding);
2434 if (encoding_flags &&
2435 e2p_str2encoding_flags(sb->s_encoding, encoding_flags,
2436 &sb->s_encoding_flags)) {
2437 fprintf(stderr, _("error: Invalid encoding flag: %s\n"),
2440 } else if (encoding_flags)
2441 printf(_("Setting encoding_flags to '%s'\n"),
2443 ext2fs_set_feature_casefold(sb);
2444 ext2fs_mark_super_dirty(fs);
2445 } else if (encoding_flags && !r_usage) {
2446 fprintf(stderr, _("error: An encoding must be explicitly "
2447 "specified when passing encoding-flags\n"));
2451 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2452 "Extended options are separated by commas, "
2453 "and may take an argument which\n"
2454 "\tis set off by an equals ('=') sign.\n\n"
2455 "Valid extended options are:\n"
2457 "\thash_alg=<hash algorithm>\n"
2458 "\tmount_opts=<extended default mount options>\n"
2459 "\tmmp_update_interval=<mmp update interval in seconds>\n"
2460 "\tstride=<RAID per-disk chunk size in blocks>\n"
2461 "\tstripe_width=<RAID stride*data disks in blocks>\n"
2465 "\tencoding=<encoding>\n"
2466 "\tencoding_flags=<flags>\n"));
2476 * Fill in the block bitmap bmap with the information regarding the
2477 * blocks to be moved
2479 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2480 ext2fs_block_bitmap bmap)
2484 ext2_badblocks_list bb_list = 0;
2485 blk64_t j, needed_blocks = 0;
2486 blk64_t start_blk, end_blk;
2488 retval = ext2fs_read_bb_inode(fs, &bb_list);
2492 for (i = 0; i < fs->group_desc_count; i++) {
2493 start_blk = ext2fs_inode_table_loc(fs, i) +
2494 fs->inode_blocks_per_group;
2496 end_blk = ext2fs_inode_table_loc(fs, i) +
2497 new_ino_blks_per_grp;
2499 for (j = start_blk; j < end_blk; j++) {
2500 if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2502 * IF the block is a bad block we fail
2504 if (ext2fs_badblocks_list_test(bb_list, j)) {
2505 ext2fs_badblocks_list_free(bb_list);
2509 ext2fs_mark_block_bitmap2(bmap, j);
2512 * We are going to use this block for
2513 * inode table. So mark them used.
2515 ext2fs_mark_block_bitmap2(fs->block_map, j);
2518 needed_blocks += end_blk - start_blk;
2521 ext2fs_badblocks_list_free(bb_list);
2522 if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2528 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2531 group = ext2fs_group_of_blk2(fs, blk);
2532 if (ext2fs_block_bitmap_loc(fs, group) == blk)
2534 if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2539 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2541 blk64_t start_blk, end_blk;
2542 start_blk = fs->super->s_first_data_block +
2543 EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2545 * We cannot get new block beyond end_blk for for the last block group
2546 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2548 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2549 if (blk >= start_blk && blk <= end_blk)
2554 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2561 blk64_t blk, new_blk, goal;
2562 struct blk_move *bmv;
2564 retval = ext2fs_get_mem(fs->blocksize, &buf);
2568 for (new_blk = blk = fs->super->s_first_data_block;
2569 blk < ext2fs_blocks_count(fs->super); blk++) {
2570 if (!ext2fs_test_block_bitmap2(bmap, blk))
2573 if (ext2fs_is_meta_block(fs, blk)) {
2575 * If the block is mapping a fs meta data block
2576 * like group desc/block bitmap/inode bitmap. We
2577 * should find a block in the same group and fix
2578 * the respective fs metadata pointers. Otherwise
2581 group = ext2fs_group_of_blk2(fs, blk);
2582 goal = ext2fs_group_first_block2(fs, group);
2588 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2592 /* new fs meta data block should be in the same group */
2593 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2598 /* Mark this block as allocated */
2599 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2601 /* Add it to block move list */
2602 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2607 bmv->new_loc = new_blk;
2609 list_add(&(bmv->list), &blk_move_list);
2611 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2615 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2621 ext2fs_free_mem(&buf);
2625 static blk64_t translate_block(blk64_t blk)
2627 struct list_head *entry;
2628 struct blk_move *bmv;
2630 list_for_each(entry, &blk_move_list) {
2631 bmv = list_entry(entry, struct blk_move, list);
2632 if (bmv->old_loc == blk)
2633 return bmv->new_loc;
2639 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2641 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2642 blk64_t ref_block EXT2FS_ATTR((unused)),
2643 int ref_offset EXT2FS_ATTR((unused)),
2648 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2650 if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2652 new_blk = translate_block(*block_nr);
2654 *block_nr = new_blk;
2656 * This will force the ext2fs_write_inode in the iterator
2658 ret |= BLOCK_CHANGED;
2664 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2666 errcode_t retval = 0;
2669 char *block_buf = 0;
2670 struct ext2_inode inode;
2671 ext2_inode_scan scan = NULL;
2673 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2677 retval = ext2fs_open_inode_scan(fs, 0, &scan);
2682 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2689 if (inode.i_links_count == 0)
2690 continue; /* inode not in use */
2693 * If we end up modifying the journal inode
2694 * the sb->s_jnl_blocks will differ. But a
2695 * subsequent e2fsck fixes that.
2696 * Do we need to fix this ??
2699 if (ext2fs_file_acl_block(fs, &inode) &&
2700 ext2fs_test_block_bitmap2(bmap,
2701 ext2fs_file_acl_block(fs, &inode))) {
2702 blk = translate_block(ext2fs_file_acl_block(fs,
2707 ext2fs_file_acl_block_set(fs, &inode, blk);
2710 * Write the inode to disk so that inode table
2713 retval = ext2fs_write_inode(fs, ino, &inode);
2718 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2721 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2722 process_block, bmap);
2729 ext2fs_free_mem(&block_buf);
2730 ext2fs_close_inode_scan(scan);
2736 * We need to scan for inode and block bitmaps that may need to be
2737 * moved. This can take place if the filesystem was formatted for
2738 * RAID arrays using the mke2fs's extended option "stride".
2740 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2743 blk64_t blk, new_blk;
2745 for (i = 0; i < fs->group_desc_count; i++) {
2746 blk = ext2fs_block_bitmap_loc(fs, i);
2747 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2748 new_blk = translate_block(blk);
2751 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2754 blk = ext2fs_inode_bitmap_loc(fs, i);
2755 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2756 new_blk = translate_block(blk);
2759 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2765 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2770 int new_ino_blks_per_grp;
2772 char *old_itable = NULL, *new_itable = NULL;
2773 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2774 unsigned long old_ino_size;
2775 int old_itable_size, new_itable_size;
2777 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2778 old_ino_size = EXT2_INODE_SIZE(fs->super);
2780 new_ino_blks_per_grp = ext2fs_div_ceil(
2781 EXT2_INODES_PER_GROUP(fs->super) *
2785 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2787 retval = ext2fs_get_mem(old_itable_size, &old_itable);
2791 retval = ext2fs_get_mem(new_itable_size, &new_itable);
2795 tmp_old_itable = old_itable;
2796 tmp_new_itable = new_itable;
2798 for (i = 0; i < fs->group_desc_count; i++) {
2799 blk = ext2fs_inode_table_loc(fs, i);
2800 retval = io_channel_read_blk64(fs->io, blk,
2801 fs->inode_blocks_per_group, old_itable);
2805 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2806 memcpy(new_itable, old_itable, old_ino_size);
2808 memset(new_itable+old_ino_size, 0,
2809 new_ino_size - old_ino_size);
2811 new_itable += new_ino_size;
2812 old_itable += old_ino_size;
2815 /* reset the pointer */
2816 old_itable = tmp_old_itable;
2817 new_itable = tmp_new_itable;
2819 retval = io_channel_write_blk64(fs->io, blk,
2820 new_ino_blks_per_grp, new_itable);
2825 /* Update the meta data */
2826 fs->inode_blocks_per_group = new_ino_blks_per_grp;
2827 ext2fs_free_inode_cache(fs->icache);
2829 fs->super->s_inode_size = new_ino_size;
2833 ext2fs_free_mem(&old_itable);
2836 ext2fs_free_mem(&new_itable);
2842 #define list_for_each_safe(pos, pnext, head) \
2843 for (pos = (head)->next, pnext = pos->next; pos != (head); \
2844 pos = pnext, pnext = pos->next)
2846 static void free_blk_move_list(void)
2848 struct list_head *entry, *tmp;
2849 struct blk_move *bmv;
2851 list_for_each_safe(entry, tmp, &blk_move_list) {
2852 bmv = list_entry(entry, struct blk_move, list);
2854 ext2fs_free_mem(&bmv);
2859 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2862 int new_ino_blks_per_grp;
2863 ext2fs_block_bitmap bmap;
2865 retval = ext2fs_read_inode_bitmap(fs);
2867 fputs(_("Failed to read inode bitmap\n"), stderr);
2870 retval = ext2fs_read_block_bitmap(fs);
2872 fputs(_("Failed to read block bitmap\n"), stderr);
2875 INIT_LIST_HEAD(&blk_move_list);
2878 new_ino_blks_per_grp = ext2fs_div_ceil(
2879 EXT2_INODES_PER_GROUP(fs->super)*
2883 /* We may change the file system.
2884 * Mark the file system as invalid so that
2885 * the user is prompted to run fsck.
2887 fs->super->s_state &= ~EXT2_VALID_FS;
2889 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2892 fputs(_("Failed to allocate block bitmap when "
2893 "increasing inode size\n"), stderr);
2896 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2898 fputs(_("Not enough space to increase inode size \n"), stderr);
2901 retval = move_block(fs, bmap);
2903 fputs(_("Failed to relocate blocks during inode resize \n"),
2907 retval = inode_scan_and_fix(fs, bmap);
2911 retval = group_desc_scan_and_fix(fs, bmap);
2915 retval = expand_inode_table(fs, new_size);
2919 ext2fs_calculate_summary_stats(fs, 1 /* super only */);
2921 fs->super->s_state |= EXT2_VALID_FS;
2922 /* mark super block and block bitmap as dirty */
2923 ext2fs_mark_super_dirty(fs);
2924 ext2fs_mark_bb_dirty(fs);
2927 free_blk_move_list();
2928 ext2fs_free_block_bitmap(bmap);
2933 free_blk_move_list();
2934 ext2fs_free_block_bitmap(bmap);
2935 fputs(_("Error in resizing the inode size.\n"
2936 "Run e2undo to undo the "
2937 "file system changes. \n"), stderr);
2942 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2944 errcode_t retval = 0;
2945 const char *tdb_dir;
2946 char *tdb_file = NULL;
2947 char *dev_name, *tmp_name;
2949 /* (re)open a specific undo file */
2950 if (undo_file && undo_file[0] != 0) {
2951 retval = set_undo_io_backing_manager(*io_ptr);
2954 *io_ptr = undo_io_manager;
2955 retval = set_undo_io_backup_file(undo_file);
2958 printf(_("Overwriting existing filesystem; this can be undone "
2959 "using the command:\n"
2960 " e2undo %s %s\n\n"),
2966 * Configuration via a conf file would be
2969 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2971 tdb_dir = "/var/lib/e2fsprogs";
2973 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2974 access(tdb_dir, W_OK))
2977 tmp_name = strdup(name);
2980 dev_name = basename(tmp_name);
2981 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2986 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2989 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2991 com_err(program_name, retval,
2992 _("while trying to delete %s"), tdb_file);
2996 retval = set_undo_io_backing_manager(*io_ptr);
2999 *io_ptr = undo_io_manager;
3000 retval = set_undo_io_backup_file(tdb_file);
3003 printf(_("Overwriting existing filesystem; this can be undone "
3004 "using the command:\n"
3005 " e2undo %s %s\n\n"),
3013 com_err("tune2fs", retval, "while trying to setup undo file\n");
3018 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
3020 int retval, nr_users, start;
3021 journal_superblock_t *jsb;
3025 char uuid[UUID_STR_SIZE];
3026 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3028 if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
3031 uuid_unparse(sb->s_journal_uuid, uuid);
3032 journal_path = blkid_get_devname(NULL, "UUID", uuid);
3036 retval = ext2fs_open2(journal_path, io_options,
3037 EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
3038 0, 0, unix_io_manager, &jfs);
3040 com_err(program_name, retval,
3041 _("while trying to open %s"),
3046 retval = get_journal_sb(jfs, buf);
3048 if (retval == EXT2_ET_UNSUPP_FEATURE)
3049 fprintf(stderr, _("%s is not a journal device.\n"),
3054 jsb = (journal_superblock_t *) buf;
3055 /* Find the filesystem UUID */
3056 nr_users = ntohl(jsb->s_nr_users);
3057 if (nr_users > JBD2_USERS_MAX) {
3058 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
3059 "is too high (%d).\n"), nr_users);
3060 return EXT2_ET_CORRUPT_JOURNAL_SB;
3063 j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
3064 if (j_uuid == NULL) {
3065 fputs(_("Filesystem's UUID not found on journal device.\n"),
3067 return EXT2_ET_LOAD_EXT_JOURNAL;
3070 memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
3072 start = ext2fs_journal_sb_start(jfs->blocksize);
3073 /* Write back the journal superblock */
3074 retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
3076 com_err(program_name, retval,
3077 "while writing journal superblock.");
3087 * Use FS_IOC_SETFSLABEL or FS_IOC_GETFSLABEL to set/get file system label
3088 * Return: 0 on success
3090 * -1 when the old method should be used
3092 static int handle_fslabel(int setlabel)
3097 char label[FSLABEL_MAX];
3098 int maxlen = FSLABEL_MAX - 1;
3099 char mntpt[PATH_MAX + 1];
3101 ret = ext2fs_check_mount_point(device_name, &mnt_flags,
3102 mntpt, sizeof(mntpt));
3106 if (!(mnt_flags & EXT2_MF_MOUNTED) ||
3107 (setlabel && (mnt_flags & EXT2_MF_READONLY)))
3113 fd = open(mntpt, O_RDONLY);
3119 if (ioctl(fd, FS_IOC_GETFSLABEL, &label)) {
3121 if (errno == ENOTTY)
3123 com_err(mntpt, errno, _("while trying to get fs label"));
3127 printf("%.*s\n", EXT2_LEN_STR(label));
3131 /* If it's extN file system, truncate the label to appropriate size */
3132 if (mnt_flags & EXT2_MF_EXTFS)
3133 maxlen = EXT2_LABEL_LEN;
3134 if (strlen(new_label) > maxlen) {
3135 fputs(_("Warning: label too long, truncating.\n"),
3137 new_label[maxlen] = '\0';
3141 if (ioctl(fd, FS_IOC_SETFSLABEL, new_label)) {
3143 if (errno == ENOTTY)
3145 com_err(mntpt, errno, _("while trying to set fs label"));
3155 #ifndef BUILD_AS_LIB
3156 int main(int argc, char **argv)
3158 int tune2fs_main(int argc, char **argv)
3159 #endif /* BUILD_AS_LIB */
3163 struct ext2_super_block *sb;
3164 io_manager io_ptr, io_ptr_orig = NULL;
3166 char default_undo_file[1] = { 0 };
3167 char mntpt[PATH_MAX + 1] = { 0 };
3169 struct fsuuid *fsuuid = NULL;
3172 setlocale(LC_MESSAGES, "");
3173 setlocale(LC_CTYPE, "");
3174 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
3175 textdomain(NLS_CAT_NAME);
3176 set_com_err_gettext(gettext);
3179 program_name = *argv;
3182 add_error_table(&et_ext2_error_table);
3184 #ifdef CONFIG_BUILD_FINDFS
3185 if (strcmp(get_progname(argv[0]), "findfs") == 0)
3186 do_findfs(argc, argv);
3188 if (strcmp(get_progname(argv[0]), "e2label") == 0)
3189 parse_e2label_options(argc, argv);
3191 parse_tune2fs_options(argc, argv);
3193 #ifdef CONFIG_TESTIO_DEBUG
3194 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
3195 io_ptr = test_io_manager;
3196 test_io_backing_manager = unix_io_manager;
3199 io_ptr = unix_io_manager;
3202 * Try the get/set fs label using ioctls before we even attempt
3203 * to open the file system.
3205 if (L_flag || print_label) {
3206 rc = handle_fslabel(L_flag);
3208 #ifndef BUILD_AS_LIB
3217 if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
3218 open_flag |= EXT2_FLAG_SKIP_MMP;
3220 open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_THREADS |
3221 EXT2_FLAG_JOURNAL_DEV_OK;
3223 /* keep the filesystem struct around to dump MMP data */
3224 open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
3226 retval = ext2fs_open2(device_name, io_options, open_flag,
3229 com_err(program_name, retval,
3230 _("while trying to open %s"),
3232 if (retval == EXT2_ET_MMP_FSCK_ON ||
3233 retval == EXT2_ET_MMP_UNKNOWN_SEQ)
3234 dump_mmp_msg(fs->mmp_buf,
3235 _("If you are sure the filesystem "
3236 "is not in use on any node, run:\n"
3237 "'tune2fs -f -E clear_mmp {device}'\n"));
3238 else if (retval == EXT2_ET_MMP_FAILED)
3239 dump_mmp_msg(fs->mmp_buf, NULL);
3240 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
3242 _("MMP block magic is bad. Try to fix it by "
3243 "running:\n'e2fsck -f %s'\n"), device_name);
3244 else if (retval == EXT2_ET_BAD_MAGIC)
3245 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
3246 else if (retval != EXT2_ET_MMP_FAILED)
3247 fprintf(stderr, "%s",
3248 _("Couldn't find valid filesystem superblock.\n"));
3253 if (ext2fs_has_feature_journal_dev(fs->super)) {
3254 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
3258 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
3262 * Check the inode size is right so we can issue an
3263 * error message and bail before setting up the tdb
3266 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
3267 fprintf(stderr, _("The inode size is already %lu\n"),
3272 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
3273 fprintf(stderr, "%s",
3274 _("Shrinking inode size is not supported\n"));
3278 if (new_inode_size > fs->blocksize) {
3279 fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
3280 new_inode_size, fs->blocksize);
3284 rc = check_fsck_needed(fs,
3285 _("Resizing inodes could take some time."));
3289 * If inode resize is requested use the
3292 undo_file = default_undo_file;
3295 /* Set up an undo file */
3296 if (undo_file && io_ptr_orig == NULL) {
3297 io_ptr_orig = io_ptr;
3298 retval = tune2fs_setup_tdb(device_name, &io_ptr);
3303 if (io_ptr != io_ptr_orig) {
3304 ext2fs_close_free(&fs);
3310 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
3313 /* For e2label emulation */
3314 printf("%.*s\n", EXT2_LEN_STR(sb->s_volume_name));
3315 remove_error_table(&et_ext2_error_table);
3319 retval = ext2fs_check_mount_point(device_name, &mount_flags,
3320 mntpt, sizeof(mntpt));
3322 com_err("ext2fs_check_mount_point", retval,
3323 _("while determining whether %s is mounted."),
3330 /* Warn if file system needs recovery and it is opened for writing. */
3331 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3332 (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3333 (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3335 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3336 "\te2fsck -E journal_only %s\n\n"
3337 "then rerun this command. Otherwise, any changes made may be overwritten\n"
3338 "by journal recovery.\n"), device_name);
3341 /* Recover the journal if possible. */
3342 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) &&
3343 ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3344 printf(_("Recovering journal.\n"));
3345 retval = ext2fs_run_ext3_journal(&fs);
3347 com_err("tune2fs", retval,
3348 "while recovering journal.\n");
3349 printf(_("Please run e2fsck -fy %s.\n"), device_name);
3359 /* Normally we only need to write out the superblock */
3360 fs->flags |= EXT2_FLAG_SUPER_ONLY;
3363 if (max_mount_count == 65536)
3364 max_mount_count = EXT2_DFL_MAX_MNT_COUNT +
3365 (random() % EXT2_DFL_MAX_MNT_COUNT);
3366 sb->s_max_mnt_count = max_mount_count;
3367 ext2fs_mark_super_dirty(fs);
3368 printf(_("Setting maximal mount count to %d\n"),
3372 sb->s_mnt_count = mount_count;
3373 ext2fs_mark_super_dirty(fs);
3374 printf(_("Setting current mount count to %d\n"), mount_count);
3377 sb->s_errors = errors;
3378 ext2fs_mark_super_dirty(fs);
3379 printf(_("Setting error behavior to %d\n"), errors);
3382 sb->s_def_resgid = resgid;
3383 ext2fs_mark_super_dirty(fs);
3384 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3387 if ((unsigned long long)interval >= (1ULL << 32)) {
3388 com_err(program_name, 0,
3389 _("interval between checks is too big (%lu)"),
3394 sb->s_checkinterval = interval;
3395 ext2fs_mark_super_dirty(fs);
3396 printf(_("Setting interval between checks to %lu seconds\n"),
3400 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3401 ext2fs_blocks_count(sb) / 100.0);
3402 ext2fs_mark_super_dirty(fs);
3403 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3405 (unsigned long long) ext2fs_r_blocks_count(sb));
3408 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3409 com_err(program_name, 0,
3410 _("reserved blocks count is too big (%llu)"),
3411 (unsigned long long) reserved_blocks);
3415 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3416 ext2fs_mark_super_dirty(fs);
3417 printf(_("Setting reserved blocks count to %llu\n"),
3418 (unsigned long long) reserved_blocks);
3421 if (ext2fs_has_feature_sparse_super(sb)) {
3422 fputs(_("\nThe filesystem already has sparse "
3423 "superblocks.\n"), stderr);
3424 } else if (ext2fs_has_feature_meta_bg(sb)) {
3425 fputs(_("\nSetting the sparse superblock flag not "
3426 "supported\nfor filesystems with "
3427 "the meta_bg feature enabled.\n"),
3432 ext2fs_set_feature_sparse_super(sb);
3433 sb->s_state &= ~EXT2_VALID_FS;
3434 ext2fs_mark_super_dirty(fs);
3435 printf(_("\nSparse superblock flag set. %s"),
3440 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3446 sb->s_lastcheck = last_check_time;
3447 ext2fs_mark_super_dirty(fs);
3448 printf(_("Setting time filesystem last checked to %s\n"),
3449 ctime(&last_check_time));
3452 sb->s_def_resuid = resuid;
3453 ext2fs_mark_super_dirty(fs);
3454 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3457 if (strlen(new_label) > sizeof(sb->s_volume_name))
3458 fputs(_("Warning: label too long, truncating.\n"),
3460 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3461 strncpy((char *)sb->s_volume_name, new_label,
3462 sizeof(sb->s_volume_name));
3463 ext2fs_mark_super_dirty(fs);
3466 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3467 strncpy((char *)sb->s_last_mounted, new_last_mounted,
3468 sizeof(sb->s_last_mounted));
3469 ext2fs_mark_super_dirty(fs);
3472 rc = update_mntopts(fs, mntopts_cmd);
3477 rc = update_feature_set(fs, features_cmd);
3482 rc = parse_extended_opts(fs, extended_cmd);
3485 if (clear_mmp && !f_flag) {
3486 fputs(_("Error in using clear_mmp. "
3487 "It must be used with -f\n"),
3494 rc = ext2fs_mmp_clear(fs);
3497 if (journal_size || journal_device) {
3498 rc = add_journal(fs);
3502 if (orphan_file_blocks) {
3505 err = ext2fs_read_bitmaps(fs);
3507 com_err(program_name, err, "%s",
3508 _("while loading bitmaps"));
3512 err = ext2fs_create_orphan_file(fs, orphan_file_blocks);
3514 com_err(program_name, err, "%s",
3515 _("while creating orphan file"));
3522 if (mount_flags & EXT2_MF_MOUNTED) {
3523 fputs(_("The quota feature may only be changed when "
3524 "the filesystem is unmounted.\n"), stderr);
3528 rc = handle_quota_options(fs);
3536 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3537 __u8 old_uuid[UUID_SIZE];
3541 if (ext2fs_has_feature_stable_inodes(fs->super)) {
3542 fputs(_("Cannot change the UUID of this filesystem "
3543 "because it has the stable_inodes feature "
3544 "flag.\n"), stderr);
3548 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3549 (ext2fs_has_feature_metadata_csum(fs->super) ||
3550 ext2fs_has_feature_ea_inode(fs->super))) {
3551 rc = check_fsck_needed(fs,
3552 _("Setting the UUID on this "
3553 "filesystem could take some time."));
3556 rewrite_checksums = REWRITE_ALL;
3559 if (ext2fs_has_group_desc_csum(fs)) {
3561 * Changing the UUID on a metadata_csum FS requires
3562 * rewriting all metadata, which can race with a
3563 * mounted fs. Don't allow that unless we're saving
3564 * the checksum seed.
3566 if ((mount_flags & EXT2_MF_MOUNTED) &&
3567 !ext2fs_has_feature_csum_seed(fs->super) &&
3568 ext2fs_has_feature_metadata_csum(fs->super)) {
3569 fputs(_("The UUID may only be "
3570 "changed when the filesystem is "
3571 "unmounted.\n"), stderr);
3572 fputs(_("If you only use kernels newer than "
3573 "v4.4, run 'tune2fs -O "
3574 "metadata_csum_seed' and re-run this "
3575 "command.\n"), stderr);
3576 try_confirm_csum_seed_support();
3582 * Determine if the block group checksums are
3583 * correct so we know whether or not to set
3586 for (i = 0; i < fs->group_desc_count; i++)
3587 if (!ext2fs_group_desc_csum_verify(fs, i))
3589 if (i >= fs->group_desc_count)
3594 if ((mount_flags & EXT2_MF_MOUNTED) &&
3595 !(mount_flags & EXT2_MF_READONLY) && mntpt[0]) {
3596 fd = open(mntpt, O_RDONLY);
3598 fsuuid = malloc(sizeof(*fsuuid) + UUID_SIZE);
3600 fsuuid->fsu_len = UUID_SIZE;
3601 fsuuid->fsu_flags = 0;
3602 ret = ioctl(fd, EXT4_IOC_GETFSUUID, fsuuid);
3603 if (ret || fsuuid->fsu_len != UUID_SIZE) {
3611 memcpy(old_uuid, fsuuid ? fsuuid->fsu_uuid : sb->s_uuid,
3613 if ((strcasecmp(requested_uuid, "null") == 0) ||
3614 (strcasecmp(requested_uuid, "clear") == 0)) {
3615 uuid_clear(new_uuid);
3616 } else if (strcasecmp(requested_uuid, "time") == 0) {
3617 uuid_generate_time(new_uuid);
3618 } else if (strcasecmp(requested_uuid, "random") == 0) {
3619 uuid_generate(new_uuid);
3620 } else if (uuid_parse(requested_uuid, new_uuid)) {
3621 com_err(program_name, 0, "%s",
3622 _("Invalid UUID format\n"));
3630 fsuuid->fsu_len = UUID_SIZE;
3631 fsuuid->fsu_flags = 0;
3632 memcpy(&fsuuid->fsu_uuid, new_uuid, UUID_SIZE);
3633 ret = ioctl(fd, EXT4_IOC_SETFSUUID, fsuuid);
3637 * If we can't set the UUID via the ioctl, fall
3638 * back to directly modifying the superblock
3641 memcpy(sb->s_uuid, new_uuid, UUID_SIZE);
3642 ext2fs_init_csum_seed(fs);
3644 for (i = 0; i < fs->group_desc_count; i++)
3645 ext2fs_group_desc_csum_set(fs, i);
3646 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3648 ext2fs_mark_super_dirty(fs);
3651 /* If this is a journal dev, we need to copy UUID into jsb */
3652 if (!(rc = get_journal_sb(fs, buf))) {
3653 journal_superblock_t *jsb;
3655 jsb = (journal_superblock_t *) buf;
3656 fputs(_("Need to update journal superblock.\n"), stdout);
3657 memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3659 /* Writeback the journal superblock */
3660 if ((rc = io_channel_write_blk64(fs->io,
3661 ext2fs_journal_sb_start(fs->blocksize),
3662 -SUPERBLOCK_SIZE, buf)))
3664 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3667 rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3669 if ((rc = fs_update_journal_user(sb, old_uuid)))
3675 if (mount_flags & EXT2_MF_MOUNTED) {
3676 fputs(_("The inode size may only be "
3677 "changed when the filesystem is "
3678 "unmounted.\n"), stderr);
3682 if (ext2fs_has_feature_flex_bg(fs->super)) {
3683 fputs(_("Changing the inode size not supported for "
3684 "filesystems with the flex_bg\n"
3685 "feature enabled.\n"),
3691 * We want to update group descriptor also
3692 * with the new free inode count
3694 if (rewrite_checksums)
3695 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3696 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3697 retval = resize_inode(fs, new_inode_size);
3698 if (rewrite_checksums)
3699 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3701 printf(_("Setting inode size %lu\n"),
3703 rewrite_checksums = REWRITE_ALL;
3705 printf("%s", _("Failed to change inode size\n"));
3711 if (rewrite_checksums) {
3712 retval = rewrite_metadata_checksums(fs, rewrite_checksums);
3714 printf("Failed to rewrite metadata checksums\n");
3723 sb->s_raid_stride = stride;
3724 ext2fs_mark_super_dirty(fs);
3725 printf(_("Setting stride size to %d\n"), stride);
3727 if (stripe_width_set) {
3728 sb->s_raid_stripe_width = stripe_width;
3729 ext2fs_mark_super_dirty(fs);
3730 printf(_("Setting stripe width to %d\n"), stripe_width);
3732 if (ext_mount_opts) {
3733 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3734 sizeof(fs->super->s_mount_opts));
3735 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3736 ext2fs_mark_super_dirty(fs);
3737 printf(_("Setting extended default mount options to '%s'\n"),
3739 free(ext_mount_opts);
3743 remove_error_table(&et_ext2_error_table);
3751 ext2fs_mmp_stop(fs);
3752 #ifndef BUILD_AS_LIB
3758 convert_64bit(fs, feature_64bit);
3760 retval = ext2fs_close_free(&fs);
3762 com_err("tune2fs", retval,
3763 _("while writing out and closing file system"));