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;
105 int journal_size, journal_flags;
106 char *journal_device;
107 static blk64_t journal_location = ~0LL;
109 static struct list_head blk_move_list;
112 struct list_head list;
117 errcode_t ext2fs_run_ext3_journal(ext2_filsys *fs);
119 static const char *please_fsck = N_("Please run e2fsck -f on the filesystem.\n");
120 static const char *please_dir_fsck =
121 N_("Please run e2fsck -fD on the filesystem.\n");
123 #ifdef CONFIG_BUILD_FINDFS
124 void do_findfs(int argc, char **argv);
127 #ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jbd-debug */
128 int journal_enable_debug = -1;
131 static void usage(void)
134 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] [-f] "
136 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
137 "\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n"
138 "\t[-p mmp_update_interval] [-r reserved_blocks_count] "
140 "\t[-C mount_count] [-L volume_label] [-M last_mounted_dir]\n"
141 "\t[-O [^]feature[,...]] [-Q quota_options]\n"
142 "\t[-E extended-option[,...]] [-T last_check_time] "
143 "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
148 static __u32 ok_features[3] = {
150 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
151 EXT2_FEATURE_COMPAT_DIR_INDEX,
153 EXT2_FEATURE_INCOMPAT_FILETYPE |
154 EXT3_FEATURE_INCOMPAT_EXTENTS |
155 EXT4_FEATURE_INCOMPAT_FLEX_BG |
156 EXT4_FEATURE_INCOMPAT_MMP |
157 EXT4_FEATURE_INCOMPAT_64BIT |
158 EXT4_FEATURE_INCOMPAT_ENCRYPT |
159 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
160 EXT4_FEATURE_INCOMPAT_LARGEDIR,
162 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
163 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
164 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
165 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
166 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
167 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
168 EXT4_FEATURE_RO_COMPAT_QUOTA |
169 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
170 EXT4_FEATURE_RO_COMPAT_READONLY |
171 EXT4_FEATURE_RO_COMPAT_PROJECT
174 static __u32 clear_ok_features[3] = {
176 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
177 EXT2_FEATURE_COMPAT_RESIZE_INODE |
178 EXT2_FEATURE_COMPAT_DIR_INDEX,
180 EXT2_FEATURE_INCOMPAT_FILETYPE |
181 EXT4_FEATURE_INCOMPAT_FLEX_BG |
182 EXT4_FEATURE_INCOMPAT_MMP |
183 EXT4_FEATURE_INCOMPAT_64BIT |
184 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
186 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
187 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
188 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
189 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
190 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
191 EXT4_FEATURE_RO_COMPAT_QUOTA |
192 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
193 EXT4_FEATURE_RO_COMPAT_READONLY
197 * Try to get journal super block if any
199 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
202 journal_superblock_t *jsb;
204 if (!ext2fs_has_feature_journal_dev(jfs->super)) {
205 return EXT2_ET_UNSUPP_FEATURE;
208 /* Get the journal superblock */
209 if ((retval = io_channel_read_blk64(jfs->io,
210 ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
211 com_err(program_name, retval, "%s",
212 _("while reading journal superblock"));
216 jsb = (journal_superblock_t *) buf;
217 if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
218 (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
219 fputs(_("Journal superblock not found!\n"), stderr);
220 return EXT2_ET_BAD_MAGIC;
226 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE],
230 for (i = 0; i < nr_users; i++) {
231 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
232 return &s_users[i * UUID_SIZE];
239 * Remove an external journal from the filesystem
241 static int remove_journal_device(ext2_filsys fs)
245 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
246 journal_superblock_t *jsb;
249 int commit_remove_journal = 0;
253 commit_remove_journal = 1; /* force removal even if error */
255 uuid_unparse(fs->super->s_journal_uuid, buf);
256 journal_path = blkid_get_devname(NULL, "UUID", buf);
260 ext2fs_find_block_device(fs->super->s_journal_dev);
262 goto no_valid_journal;
265 #ifdef CONFIG_TESTIO_DEBUG
266 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
267 io_ptr = test_io_manager;
268 test_io_backing_manager = unix_io_manager;
271 io_ptr = unix_io_manager;
272 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
273 EXT2_FLAG_JOURNAL_DEV_OK, 0,
274 fs->blocksize, io_ptr, &jfs);
276 com_err(program_name, retval, "%s",
277 _("while trying to open external journal"));
278 goto no_valid_journal;
281 if ((retval = get_journal_sb(jfs, buf))) {
282 if (retval == EXT2_ET_UNSUPP_FEATURE)
283 fprintf(stderr, _("%s is not a journal device.\n"),
285 goto no_valid_journal;
288 jsb = (journal_superblock_t *) buf;
289 /* Find the filesystem UUID */
290 nr_users = ntohl(jsb->s_nr_users);
292 if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
293 fputs(_("Filesystem's UUID not found on journal device.\n"),
295 commit_remove_journal = 1;
296 goto no_valid_journal;
299 for (i = 0; i < nr_users; i++)
300 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
301 jsb->s_nr_users = htonl(nr_users);
303 /* Write back the journal superblock */
304 retval = io_channel_write_blk64(jfs->io,
305 ext2fs_journal_sb_start(fs->blocksize),
306 -SUPERBLOCK_SIZE, buf);
308 com_err(program_name, retval,
309 "while writing journal superblock.");
310 goto no_valid_journal;
313 commit_remove_journal = 1;
316 if (commit_remove_journal == 0) {
317 fputs(_("Cannot locate journal device. It was NOT removed\n"
318 "Use -f option to remove missing journal device.\n"),
322 fs->super->s_journal_dev = 0;
323 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
324 uuid_clear(fs->super->s_journal_uuid);
325 ext2fs_mark_super_dirty(fs);
326 fputs(_("Journal removed\n"), stdout);
332 /* Helper function for remove_journal_inode */
333 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
334 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
335 blk64_t ref_block EXT2FS_ATTR((unused)),
336 int ref_offset EXT2FS_ATTR((unused)),
337 void *private EXT2FS_ATTR((unused)))
343 ext2fs_unmark_block_bitmap2(fs->block_map, block);
344 group = ext2fs_group_of_blk2(fs, block);
345 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
346 ext2fs_group_desc_csum_set(fs, group);
347 ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
352 * Remove the journal inode from the filesystem
354 static errcode_t remove_journal_inode(ext2_filsys fs)
356 struct ext2_inode inode;
358 ino_t ino = fs->super->s_journal_inum;
360 retval = ext2fs_read_inode(fs, ino, &inode);
362 com_err(program_name, retval, "%s",
363 _("while reading journal inode"));
366 if (ino == EXT2_JOURNAL_INO) {
367 retval = ext2fs_read_bitmaps(fs);
369 com_err(program_name, retval, "%s",
370 _("while reading bitmaps"));
373 retval = ext2fs_block_iterate3(fs, ino,
374 BLOCK_FLAG_READ_ONLY, NULL,
375 release_blocks_proc, NULL);
377 com_err(program_name, retval, "%s",
378 _("while clearing journal inode"));
381 memset(&inode, 0, sizeof(inode));
382 ext2fs_mark_bb_dirty(fs);
383 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
385 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
386 retval = ext2fs_write_inode(fs, ino, &inode);
388 com_err(program_name, retval, "%s",
389 _("while writing journal inode"));
392 fs->super->s_journal_inum = 0;
393 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
394 ext2fs_mark_super_dirty(fs);
400 * Update the default mount options
402 static int update_mntopts(ext2_filsys fs, char *mntopts)
404 struct ext2_super_block *sb = fs->super;
406 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
407 fprintf(stderr, _("Invalid mount option set: %s\n"),
411 ext2fs_mark_super_dirty(fs);
416 static void check_fsck_needed(ext2_filsys fs, const char *prompt)
418 /* Refuse to modify anything but a freshly checked valid filesystem. */
419 if (!(fs->super->s_state & EXT2_VALID_FS) ||
420 (fs->super->s_state & EXT2_ERROR_FS) ||
421 (fs->super->s_lastcheck < fs->super->s_mtime)) {
422 printf("\n%s\n", _(please_fsck));
423 if (mount_flags & EXT2_MF_READONLY)
424 printf("%s", _("(and reboot afterwards!)\n"));
428 /* Give the admin a few seconds to bail out of a dangerous op. */
429 if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
436 static void request_dir_fsck_afterwards(ext2_filsys fs)
438 static int requested;
443 fs->super->s_state &= ~EXT2_VALID_FS;
444 printf("\n%s\n", _(please_dir_fsck));
445 if (mount_flags & EXT2_MF_READONLY)
446 printf("%s", _("(and reboot afterwards!)\n"));
449 static void request_fsck_afterwards(ext2_filsys fs)
451 static int requested = 0;
456 fs->super->s_state &= ~EXT2_VALID_FS;
457 printf("\n%s\n", _(please_fsck));
458 if (mount_flags & EXT2_MF_READONLY)
459 printf("%s", _("(and reboot afterwards!)\n"));
462 static void convert_64bit(ext2_filsys fs, int direction)
468 * Is resize2fs going to demand a fsck run? Might as well tell the
471 if (!fsck_requested &&
472 ((fs->super->s_state & EXT2_ERROR_FS) ||
473 !(fs->super->s_state & EXT2_VALID_FS) ||
474 fs->super->s_lastcheck < fs->super->s_mtime))
475 request_fsck_afterwards(fs);
477 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
478 direction > 0 ? "-b" : "-s", fs->device_name);
480 fprintf(stderr, _("Please run `resize2fs %s %s"),
481 direction > 0 ? "-b" : "-s", fs->device_name);
484 fprintf(stderr, _(" -z \"%s\""), undo_file);
486 fprintf(stderr, _("' to enable 64-bit mode.\n"));
488 fprintf(stderr, _("' to disable 64-bit mode.\n"));
491 /* Rewrite extents */
492 static errcode_t rewrite_extents(ext2_filsys fs, ext2_ino_t ino,
493 struct ext2_inode *inode)
495 ext2_extent_handle_t handle;
496 struct ext2fs_extent extent;
498 struct ext2_extent_info info;
500 if (!(inode->i_flags & EXT4_EXTENTS_FL) ||
501 !ext2fs_has_feature_metadata_csum(fs->super))
504 errcode = ext2fs_extent_open(fs, ino, &handle);
508 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent);
513 errcode = ext2fs_extent_get_info(handle, &info);
518 * If this is the first extent in an extent block that we
519 * haven't visited, rewrite the extent to force the ETB
520 * checksum to be rewritten.
522 if (info.curr_entry == 1 && info.curr_level != 0 &&
523 !(extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)) {
524 errcode = ext2fs_extent_replace(handle, 0, &extent);
529 /* Skip to the end of a block of leaf nodes */
530 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
531 errcode = ext2fs_extent_get(handle,
532 EXT2_EXTENT_LAST_SIB,
538 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_NEXT, &extent);
539 } while (errcode == 0);
542 /* Ok if we run off the end */
543 if (errcode == EXT2_ET_EXTENT_NO_NEXT)
545 ext2fs_extent_free(handle);
550 * Rewrite directory blocks with checksums
552 struct rewrite_dir_context {
559 static int rewrite_dir_block(ext2_filsys fs,
561 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
562 blk64_t ref_block EXT2FS_ATTR((unused)),
563 int ref_offset EXT2FS_ATTR((unused)),
566 struct ext2_dx_countlimit *dcl = NULL;
567 struct rewrite_dir_context *ctx = priv_data;
568 int dcl_offset, changed = 0;
570 ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
575 /* if htree node... */
577 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
580 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
581 /* Ensure limit is the max size */
582 int max_entries = (fs->blocksize - dcl_offset) /
583 sizeof(struct ext2_dx_entry);
584 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
586 dcl->limit = ext2fs_cpu_to_le16(max_entries);
589 /* If htree block is full then rebuild the dir */
590 if (ext2fs_le16_to_cpu(dcl->count) ==
591 ext2fs_le16_to_cpu(dcl->limit)) {
592 request_dir_fsck_afterwards(fs);
596 * Ensure dcl->limit is small enough to leave room for
599 int max_entries = (fs->blocksize - (dcl_offset +
600 sizeof(struct ext2_dx_tail))) /
601 sizeof(struct ext2_dx_entry);
602 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
603 dcl->limit = ext2fs_cpu_to_le16(max_entries);
604 /* Always rewrite checksum */
608 unsigned int rec_len, name_size;
609 char *top = ctx->buf + fs->blocksize;
610 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
611 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
613 /* Find last and penultimate dirent */
614 while ((char *)de < top) {
615 penultimate_de = last_de;
617 ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
618 if (!ctx->errcode && !rec_len)
619 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
622 de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
624 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
627 name_size = ext2fs_dirent_name_len(last_de);
629 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
632 if (last_de->inode ||
634 rec_len != sizeof(struct ext2_dir_entry_tail))
637 * The last dirent is unused and the right length to
638 * have stored a checksum. Erase it.
640 ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
643 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
646 ext2fs_set_rec_len(fs, rec_len +
647 sizeof(struct ext2_dir_entry_tail),
651 unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
652 struct ext2_dir_entry_tail *t;
655 * If the last dirent looks like the tail, just update
658 if (!last_de->inode &&
659 rec_len == csum_size) {
660 t = (struct ext2_dir_entry_tail *)last_de;
661 t->det_reserved_name_len =
662 EXT2_DIR_NAME_LEN_CSUM;
667 name_size = (name_size & ~3) + 4;
668 /* If there's not enough space for the tail, e2fsck */
669 if (rec_len <= (8 + name_size + csum_size)) {
670 request_dir_fsck_afterwards(fs);
673 /* Shorten that last de and insert the tail */
674 ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
675 t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
676 ext2fs_initialize_dirent_tail(fs, t);
678 /* Always update checksum */
687 ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
695 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
696 struct ext2_inode *inode)
699 struct rewrite_dir_context ctx;
701 retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
705 ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
708 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
709 BLOCK_FLAG_DATA_ONLY,
710 0, rewrite_dir_block, &ctx);
712 ext2fs_free_mem(&ctx.buf);
720 * Forcibly set checksums in all inodes.
722 static void rewrite_inodes(ext2_filsys fs)
724 int length = EXT2_INODE_SIZE(fs->super);
725 struct ext2_inode *inode, *zero;
727 ext2_inode_scan scan;
730 blk64_t file_acl_block;
733 if (fs->super->s_creator_os == EXT2_OS_HURD)
736 retval = ext2fs_open_inode_scan(fs, 0, &scan);
738 com_err("set_csum", retval, "while opening inode scan");
742 retval = ext2fs_get_mem(length, &inode);
744 com_err("set_csum", retval, "while allocating memory");
748 retval = ext2fs_get_memzero(length, &zero);
750 com_err("set_csum", retval, "while allocating memory");
754 retval = ext2fs_get_mem(fs->blocksize, &ea_buf);
756 com_err("set_csum", retval, "while allocating memory");
761 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
763 com_err("set_csum", retval, "while getting next inode");
768 if (ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
771 if (memcmp(inode, zero, length) != 0) {
772 memset(inode, 0, length);
780 retval = ext2fs_write_inode_full(fs, ino, inode,
783 com_err("set_csum", retval, "while writing "
789 retval = rewrite_extents(fs, ino, inode);
791 com_err("rewrite_extents", retval,
792 "while rewriting extents");
796 if (LINUX_S_ISDIR(inode->i_mode) &&
797 ext2fs_inode_has_valid_blocks2(fs, inode)) {
798 retval = rewrite_directory(fs, ino, inode);
800 com_err("rewrite_directory", retval,
801 "while rewriting directories");
806 file_acl_block = ext2fs_file_acl_block(fs, inode);
809 retval = ext2fs_read_ext_attr3(fs, file_acl_block, ea_buf, ino);
811 com_err("rewrite_eablock", retval,
812 "while rewriting extended attribute");
815 retval = ext2fs_write_ext_attr3(fs, file_acl_block, ea_buf,
818 com_err("rewrite_eablock", retval,
819 "while rewriting extended attribute");
824 ext2fs_free_mem(&zero);
825 ext2fs_free_mem(&inode);
826 ext2fs_free_mem(&ea_buf);
827 ext2fs_close_inode_scan(scan);
830 static void rewrite_metadata_checksums(ext2_filsys fs)
835 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
836 ext2fs_init_csum_seed(fs);
837 for (i = 0; i < fs->group_desc_count; i++)
838 ext2fs_group_desc_csum_set(fs, i);
839 retval = ext2fs_read_bitmaps(fs);
841 com_err("rewrite_metadata_checksums", retval,
842 "while reading bitmaps");
846 ext2fs_mark_ib_dirty(fs);
847 ext2fs_mark_bb_dirty(fs);
848 ext2fs_mmp_update2(fs, 1);
849 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
850 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
851 if (ext2fs_has_feature_metadata_csum(fs->super))
852 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
854 fs->super->s_checksum_type = 0;
855 ext2fs_mark_super_dirty(fs);
858 static void enable_uninit_bg(ext2_filsys fs)
860 struct ext2_group_desc *gd;
863 for (i = 0; i < fs->group_desc_count; i++) {
864 gd = ext2fs_group_desc(fs, fs->group_desc, i);
865 gd->bg_itable_unused = 0;
866 gd->bg_flags = EXT2_BG_INODE_ZEROED;
867 ext2fs_group_desc_csum_set(fs, i);
869 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
872 static errcode_t zero_empty_inodes(ext2_filsys fs)
874 int length = EXT2_INODE_SIZE(fs->super);
875 struct ext2_inode *inode = NULL;
876 ext2_inode_scan scan;
880 retval = ext2fs_open_inode_scan(fs, 0, &scan);
884 retval = ext2fs_get_mem(length, &inode);
889 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
894 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
895 memset(inode, 0, length);
896 retval = ext2fs_write_inode_full(fs, ino, inode,
904 ext2fs_free_mem(&inode);
905 ext2fs_close_inode_scan(scan);
909 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
911 struct ext2_group_desc *gd;
916 /* Load bitmaps to ensure that the uninit ones get written out */
917 fs->super->s_feature_ro_compat |= csum_feature_flag;
918 retval = ext2fs_read_bitmaps(fs);
919 fs->super->s_feature_ro_compat &= ~csum_feature_flag;
921 com_err("disable_uninit_bg", retval,
922 "while reading bitmaps");
923 request_fsck_afterwards(fs);
926 ext2fs_mark_ib_dirty(fs);
927 ext2fs_mark_bb_dirty(fs);
929 /* If we're only turning off uninit_bg, zero the inodes */
930 if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
931 retval = zero_empty_inodes(fs);
933 com_err("disable_uninit_bg", retval,
934 "while zeroing unused inodes");
935 request_fsck_afterwards(fs);
940 /* The bbitmap is zeroed; we must mark group metadata blocks in use */
941 for (i = 0; i < fs->group_desc_count; i++) {
942 b = ext2fs_block_bitmap_loc(fs, i);
943 ext2fs_mark_block_bitmap2(fs->block_map, b);
944 b = ext2fs_inode_bitmap_loc(fs, i);
945 ext2fs_mark_block_bitmap2(fs->block_map, b);
947 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
948 if (retval == 0 && b)
949 ext2fs_mark_block_bitmap2(fs->block_map, b);
950 if (retval == 0 && c)
951 ext2fs_mark_block_bitmap2(fs->block_map, c);
952 if (retval == 0 && d)
953 ext2fs_mark_block_bitmap2(fs->block_map, d);
955 com_err("disable_uninit_bg", retval,
956 "while initializing block bitmaps");
957 request_fsck_afterwards(fs);
960 gd = ext2fs_group_desc(fs, fs->group_desc, i);
961 gd->bg_itable_unused = 0;
963 ext2fs_group_desc_csum_set(fs, i);
965 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
966 ext2fs_mark_super_dirty(fs);
972 try_confirm_csum_seed_support(void)
974 if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
975 fputs(_("WARNING: Could not confirm kernel support for "
976 "metadata_csum_seed.\n This requires Linux >= "
981 * Update the feature set as provided by the user.
983 static int update_feature_set(ext2_filsys fs, char *features)
985 struct ext2_super_block *sb = fs->super;
986 __u32 old_features[3];
988 unsigned int mask_err;
990 enum quota_type qtype;
992 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
993 ((&sb->s_feature_compat)[(type)] & (mask)))
994 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
995 !((&sb->s_feature_compat)[(type)] & (mask)))
996 #define FEATURE_CHANGED(type, mask) ((mask) & \
997 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
999 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1000 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1001 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1003 if (e2p_edit_feature2(features, &sb->s_feature_compat,
1004 ok_features, clear_ok_features,
1005 &type_err, &mask_err)) {
1008 _("Invalid filesystem option set: %s\n"),
1010 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1011 fprintf(stderr, _("Clearing filesystem feature '%s' "
1012 "not supported.\n"),
1013 e2p_feature2string(type_err &
1014 E2P_FEATURE_TYPE_MASK,
1017 fprintf(stderr, _("Setting filesystem feature '%s' "
1018 "not supported.\n"),
1019 e2p_feature2string(type_err, mask_err));
1023 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1024 if ((mount_flags & EXT2_MF_MOUNTED) &&
1025 !(mount_flags & EXT2_MF_READONLY)) {
1026 fputs(_("The has_journal feature may only be "
1027 "cleared when the filesystem is\n"
1028 "unmounted or mounted "
1029 "read-only.\n"), stderr);
1032 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1034 fputs(_("The needs_recovery flag is set. "
1035 "Please run e2fsck before clearing\n"
1036 "the has_journal flag.\n"), stderr);
1039 if (sb->s_journal_inum) {
1040 if (remove_journal_inode(fs))
1043 if (sb->s_journal_dev) {
1044 if (remove_journal_device(fs))
1049 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1050 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1051 if (ext2fs_has_feature_meta_bg(sb)) {
1052 fputs(_("Setting filesystem feature 'sparse_super' "
1053 "not supported\nfor filesystems with "
1054 "the meta_bg feature enabled.\n"),
1060 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1063 if ((mount_flags & EXT2_MF_MOUNTED) ||
1064 (mount_flags & EXT2_MF_READONLY)) {
1065 fputs(_("The multiple mount protection feature can't\n"
1066 "be set if the filesystem is mounted or\n"
1067 "read-only.\n"), stderr);
1071 error = ext2fs_mmp_init(fs);
1073 fputs(_("\nError while enabling multiple mount "
1074 "protection feature."), stderr);
1079 * We want to update group desc with the new free blocks count
1081 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1083 printf(_("Multiple mount protection has been enabled "
1084 "with update interval %ds.\n"),
1085 sb->s_mmp_update_interval);
1088 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1091 if (mount_flags & EXT2_MF_READONLY) {
1092 fputs(_("The multiple mount protection feature cannot\n"
1093 "be disabled if the filesystem is readonly.\n"),
1098 error = ext2fs_read_bitmaps(fs);
1100 fputs(_("Error while reading bitmaps\n"), stderr);
1104 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1106 struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1108 if (error == EXT2_ET_MMP_MAGIC_INVALID)
1109 printf(_("Magic number in MMP block does not "
1110 "match. expected: %x, actual: %x\n"),
1111 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1113 com_err(program_name, error, "%s",
1114 _("while reading MMP block."));
1118 /* We need to force out the group descriptors as well */
1119 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1120 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1122 sb->s_mmp_block = 0;
1123 sb->s_mmp_update_interval = 0;
1126 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1128 * If adding a journal flag, let the create journal
1129 * code below handle setting the flag and creating the
1130 * journal. We supply a default size if necessary.
1134 ext2fs_clear_feature_journal(sb);
1137 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1138 if (!sb->s_def_hash_version)
1139 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1140 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1141 uuid_generate((unsigned char *) sb->s_hash_seed);
1144 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1145 if (ext2fs_check_desc(fs)) {
1146 fputs(_("Clearing the flex_bg flag would "
1147 "cause the the filesystem to be\n"
1148 "inconsistent.\n"), stderr);
1153 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1154 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1155 if ((mount_flags & EXT2_MF_MOUNTED) &&
1156 !(mount_flags & EXT2_MF_READONLY)) {
1157 fputs(_("The huge_file feature may only be "
1158 "cleared when the filesystem is\n"
1159 "unmounted or mounted "
1160 "read-only.\n"), stderr);
1165 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1166 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1167 check_fsck_needed(fs,
1168 _("Enabling checksums could take some time."));
1169 if (mount_flags & EXT2_MF_MOUNTED) {
1170 fputs(_("Cannot enable metadata_csum on a mounted "
1171 "filesystem!\n"), stderr);
1174 if (!ext2fs_has_feature_extents(fs->super))
1176 _("Extents are not enabled. The file extent "
1177 "tree can be checksummed, whereas block maps "
1178 "cannot. Not enabling extents reduces the "
1179 "coverage of metadata checksumming. "
1180 "Re-run with -O extent to rectify.\n"));
1181 if (!ext2fs_has_feature_64bit(fs->super))
1183 _("64-bit filesystem support is not enabled. "
1184 "The larger fields afforded by this feature "
1185 "enable full-strength checksumming. "
1186 "Run resize2fs -b to rectify.\n"));
1187 rewrite_checksums = 1;
1188 /* metadata_csum supersedes uninit_bg */
1189 ext2fs_clear_feature_gdt_csum(fs->super);
1191 /* if uninit_bg was previously off, rewrite group desc */
1192 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1193 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1194 enable_uninit_bg(fs);
1197 * Since metadata_csum supersedes uninit_bg, pretend like
1198 * uninit_bg has been off all along.
1200 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1201 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1204 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1205 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1206 __u32 test_features[3];
1208 check_fsck_needed(fs,
1209 _("Disabling checksums could take some time."));
1210 if (mount_flags & EXT2_MF_MOUNTED) {
1211 fputs(_("Cannot disable metadata_csum on a mounted "
1212 "filesystem!\n"), stderr);
1215 rewrite_checksums = 1;
1217 /* Enable uninit_bg unless the user expressly turned it off */
1218 memcpy(test_features, old_features, sizeof(test_features));
1219 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1220 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1221 e2p_edit_feature2(features, test_features, ok_features,
1222 clear_ok_features, NULL, NULL);
1223 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1224 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1225 ext2fs_set_feature_gdt_csum(fs->super);
1228 * If we're turning off metadata_csum and not turning on
1229 * uninit_bg, rewrite group desc.
1231 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1232 err = disable_uninit_bg(fs,
1233 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1238 * metadata_csum previously provided uninit_bg, so if
1239 * we're also setting the uninit_bg feature bit,
1240 * pretend like it was previously enabled. Checksums
1241 * will be rewritten with crc16 later.
1243 old_features[E2P_FEATURE_RO_INCOMPAT] |=
1244 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1245 fs->super->s_checksum_seed = 0;
1246 ext2fs_clear_feature_csum_seed(fs->super);
1249 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1250 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1251 /* Do not enable uninit_bg when metadata_csum enabled */
1252 if (ext2fs_has_feature_metadata_csum(fs->super))
1253 ext2fs_clear_feature_gdt_csum(fs->super);
1255 enable_uninit_bg(fs);
1258 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1259 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1260 err = disable_uninit_bg(fs,
1261 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1267 * We don't actually toggle 64bit; resize2fs does that. But this
1268 * must come after the metadata_csum feature_on so that it won't
1269 * complain about the lack of 64bit.
1271 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1272 EXT4_FEATURE_INCOMPAT_64BIT)) {
1273 if (mount_flags & EXT2_MF_MOUNTED) {
1274 fprintf(stderr, _("Cannot enable 64-bit mode "
1275 "while mounted!\n"));
1278 ext2fs_clear_feature_64bit(sb);
1281 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1282 EXT4_FEATURE_INCOMPAT_64BIT)) {
1283 if (mount_flags & EXT2_MF_MOUNTED) {
1284 fprintf(stderr, _("Cannot disable 64-bit mode "
1285 "while mounted!\n"));
1288 ext2fs_set_feature_64bit(sb);
1292 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1293 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1295 * Set the Q_flag here and handle the quota options in the code
1300 /* Enable usr/grp quota by default */
1301 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1302 if (qtype != PRJQUOTA)
1303 quota_enable[qtype] = QOPT_ENABLE;
1305 quota_enable[qtype] = QOPT_DISABLE;
1308 ext2fs_clear_feature_quota(sb);
1311 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1312 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1313 if (!Q_flag && !ext2fs_has_feature_quota(sb))
1314 fputs(_("\nWarning: enabled project without quota together\n"),
1317 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1320 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1321 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1323 * Set the Q_flag here and handle the quota options in the code
1327 fputs(_("\nWarning: '^quota' option overrides '-Q'"
1328 "arguments.\n"), stderr);
1330 /* Disable all quota by default */
1331 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1332 quota_enable[qtype] = QOPT_DISABLE;
1335 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1336 fs->super->s_encrypt_algos[0] =
1337 EXT4_ENCRYPTION_MODE_AES_256_XTS;
1338 fs->super->s_encrypt_algos[1] =
1339 EXT4_ENCRYPTION_MODE_AES_256_CTS;
1342 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1343 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1344 if (!ext2fs_has_feature_metadata_csum(sb)) {
1345 fputs(_("Setting feature 'metadata_csum_seed' "
1346 "is only supported\non filesystems with "
1347 "the metadata_csum feature enabled.\n"),
1351 try_confirm_csum_seed_support();
1352 fs->super->s_checksum_seed = fs->csum_seed;
1355 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1356 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1359 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1360 sizeof(fs->super->s_uuid));
1361 if (fs->super->s_checksum_seed != uuid_seed &&
1362 (mount_flags & EXT2_MF_MOUNTED)) {
1363 fputs(_("UUID has changed since enabling "
1364 "metadata_csum. Filesystem must be unmounted "
1365 "\nto safely rewrite all metadata to "
1366 "match the new UUID.\n"), stderr);
1370 rewrite_checksums = 1;
1373 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1374 (sb->s_feature_compat || sb->s_feature_ro_compat ||
1375 sb->s_feature_incompat))
1376 ext2fs_update_dynamic_rev(fs);
1378 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1379 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1380 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1381 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1382 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1383 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1384 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1385 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1386 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1387 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1388 request_fsck_afterwards(fs);
1390 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1391 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1392 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1393 ext2fs_mark_super_dirty(fs);
1399 * Add a journal to the filesystem.
1401 static int add_journal(ext2_filsys fs)
1403 unsigned long journal_blocks;
1408 if (ext2fs_has_feature_journal(fs->super)) {
1409 fputs(_("The filesystem already has a journal.\n"), stderr);
1412 if (journal_device) {
1413 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1415 proceed_question(-1);
1416 check_mount(journal_device, 0, _("journal"));
1417 #ifdef CONFIG_TESTIO_DEBUG
1418 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1419 io_ptr = test_io_manager;
1420 test_io_backing_manager = unix_io_manager;
1423 io_ptr = unix_io_manager;
1424 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1425 EXT2_FLAG_JOURNAL_DEV_OK, 0,
1426 fs->blocksize, io_ptr, &jfs);
1428 com_err(program_name, retval,
1429 _("\n\twhile trying to open journal on %s\n"),
1433 printf(_("Creating journal on device %s: "),
1437 retval = ext2fs_add_journal_device(fs, jfs);
1438 ext2fs_close_free(&jfs);
1440 com_err(program_name, retval,
1441 _("while adding filesystem to journal on %s"),
1445 fputs(_("done\n"), stdout);
1446 } else if (journal_size) {
1447 fputs(_("Creating journal inode: "), stdout);
1449 journal_blocks = figure_journal_size(journal_size, fs);
1451 if (journal_location_string)
1453 parse_num_blocks2(journal_location_string,
1454 fs->super->s_log_block_size);
1455 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1459 fprintf(stderr, "\n");
1460 com_err(program_name, retval, "%s",
1461 _("\n\twhile trying to create journal file"));
1464 fputs(_("done\n"), stdout);
1466 * If the filesystem wasn't mounted, we need to force
1467 * the block group descriptors out.
1469 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1470 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1472 print_check_message(fs->super->s_max_mnt_count,
1473 fs->super->s_checkinterval);
1477 free(journal_device);
1481 static void handle_quota_options(ext2_filsys fs)
1486 enum quota_type qtype;
1487 unsigned int qtype_bits = 0;
1489 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1490 if (quota_enable[qtype] != 0)
1492 if (qtype == MAXQUOTAS)
1493 /* Nothing to do. */
1496 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1497 if (quota_enable[qtype] == QOPT_ENABLE)
1498 qtype_bits |= 1 << qtype;
1501 retval = quota_init_context(&qctx, fs, qtype_bits);
1503 com_err(program_name, retval,
1504 _("while initializing quota context in support library"));
1509 quota_compute_usage(qctx);
1511 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1512 if (quota_enable[qtype] == QOPT_ENABLE &&
1513 *quota_sb_inump(fs->super, qtype) == 0) {
1514 if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1515 retval = quota_update_limits(qctx, qf_ino,
1518 com_err(program_name, retval,
1519 _("while updating quota limits (%d)"),
1524 retval = quota_write_inode(qctx, 1 << qtype);
1526 com_err(program_name, retval,
1527 _("while writing quota file (%d)"),
1531 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1532 retval = quota_remove_inode(fs, qtype);
1534 com_err(program_name, retval,
1535 _("while removing quota file (%d)"),
1542 quota_release_context(&qctx);
1545 ext2fs_set_feature_quota(fs->super);
1546 ext2fs_mark_super_dirty(fs);
1548 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1549 if (*quota_sb_inump(fs->super, qtype) != 0)
1551 if (qtype == MAXQUOTAS) {
1552 fs->super->s_feature_ro_compat &=
1553 ~EXT4_FEATURE_RO_COMPAT_QUOTA;
1554 ext2fs_mark_super_dirty(fs);
1561 static int option_handle_function(char *token)
1563 if (strncmp(token, "usr", 3) == 0) {
1564 quota_enable[USRQUOTA] = QOPT_ENABLE;
1565 } else if (strncmp(token, "^usr", 4) == 0) {
1566 quota_enable[USRQUOTA] = QOPT_DISABLE;
1567 } else if (strncmp(token, "grp", 3) == 0) {
1568 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1569 } else if (strncmp(token, "^grp", 4) == 0) {
1570 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1571 } else if (strncmp(token, "prj", 3) == 0) {
1572 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1573 } else if (strncmp(token, "^prj", 4) == 0) {
1574 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1576 fputs(_("\nBad quota options specified.\n\n"
1577 "Following valid quota options are available "
1578 "(pass by separating with comma):\n"
1588 static void parse_e2label_options(int argc, char ** argv)
1590 if ((argc < 2) || (argc > 3)) {
1591 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1594 io_options = strchr(argv[1], '?');
1597 device_name = blkid_get_devname(NULL, argv[1], NULL);
1599 com_err("e2label", 0, _("Unable to resolve '%s'"),
1603 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1605 open_flag |= EXT2_FLAG_RW;
1607 new_label = argv[2];
1612 static time_t parse_time(char *str)
1616 if (strcmp(str, "now") == 0) {
1619 memset(&ts, 0, sizeof(ts));
1620 #ifdef HAVE_STRPTIME
1621 strptime(str, "%Y%m%d%H%M%S", &ts);
1623 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1624 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1627 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1628 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1629 ts.tm_min > 59 || ts.tm_sec > 61)
1632 if (ts.tm_mday == 0) {
1633 com_err(program_name, 0,
1634 _("Couldn't parse date/time specifier: %s"),
1639 return (mktime(&ts));
1642 static void parse_tune2fs_options(int argc, char **argv)
1649 char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1652 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1653 while ((c = getopt(argc, argv, optstring)) != EOF)
1656 max_mount_count = strtol(optarg, &tmp, 0);
1657 if (*tmp || max_mount_count > 16000) {
1658 com_err(program_name, 0,
1659 _("bad mounts count - %s"),
1663 if (max_mount_count == 0)
1664 max_mount_count = -1;
1666 open_flag = EXT2_FLAG_RW;
1669 mount_count = strtoul(optarg, &tmp, 0);
1670 if (*tmp || mount_count > 16000) {
1671 com_err(program_name, 0,
1672 _("bad mounts count - %s"),
1677 open_flag = EXT2_FLAG_RW;
1680 if (strcmp(optarg, "continue") == 0)
1681 errors = EXT2_ERRORS_CONTINUE;
1682 else if (strcmp(optarg, "remount-ro") == 0)
1683 errors = EXT2_ERRORS_RO;
1684 else if (strcmp(optarg, "panic") == 0)
1685 errors = EXT2_ERRORS_PANIC;
1687 com_err(program_name, 0,
1688 _("bad error behavior - %s"),
1693 open_flag = EXT2_FLAG_RW;
1696 extended_cmd = optarg;
1697 open_flag |= EXT2_FLAG_RW;
1699 case 'f': /* Force */
1703 resgid = strtoul(optarg, &tmp, 0);
1705 gr = getgrnam(optarg);
1709 resgid = gr->gr_gid;
1714 com_err(program_name, 0,
1715 _("bad gid/group name - %s"),
1720 open_flag = EXT2_FLAG_RW;
1723 interval = strtoul(optarg, &tmp, 0);
1730 case 'D': /* days */
1736 case 'M': /* months! */
1737 interval *= 86400 * 30;
1741 case 'W': /* weeks */
1742 interval *= 86400 * 7;
1747 com_err(program_name, 0,
1748 _("bad interval - %s"), optarg);
1752 open_flag = EXT2_FLAG_RW;
1757 open_flag = EXT2_FLAG_RW;
1760 parse_journal_opts(optarg);
1761 open_flag = EXT2_FLAG_RW;
1769 open_flag |= EXT2_FLAG_RW |
1770 EXT2_FLAG_JOURNAL_DEV_OK;
1773 reserved_ratio = strtod(optarg, &tmp);
1774 if (*tmp || reserved_ratio > 50 ||
1775 reserved_ratio < 0) {
1776 com_err(program_name, 0,
1777 _("bad reserved block ratio - %s"),
1782 open_flag = EXT2_FLAG_RW;
1785 new_last_mounted = optarg;
1787 open_flag = EXT2_FLAG_RW;
1791 com_err(program_name, 0, "%s",
1792 _("-o may only be specified once"));
1795 mntopts_cmd = optarg;
1796 open_flag = EXT2_FLAG_RW;
1800 com_err(program_name, 0, "%s",
1801 _("-O may only be specified once"));
1804 features_cmd = optarg;
1805 open_flag = EXT2_FLAG_RW;
1809 ret = parse_quota_opts(optarg, option_handle_function);
1812 open_flag = EXT2_FLAG_RW;
1815 reserved_blocks = strtoul(optarg, &tmp, 0);
1817 com_err(program_name, 0,
1818 _("bad reserved blocks count - %s"),
1823 open_flag = EXT2_FLAG_RW;
1825 case 's': /* Deprecated */
1826 s_flag = atoi(optarg);
1827 open_flag = EXT2_FLAG_RW;
1831 last_check_time = parse_time(optarg);
1832 open_flag = EXT2_FLAG_RW;
1835 resuid = strtoul(optarg, &tmp, 0);
1837 pw = getpwnam(optarg);
1841 resuid = pw->pw_uid;
1846 com_err(program_name, 0,
1847 _("bad uid/user name - %s"),
1852 open_flag = EXT2_FLAG_RW;
1857 open_flag = EXT2_FLAG_RW |
1858 EXT2_FLAG_JOURNAL_DEV_OK;
1861 new_inode_size = strtoul(optarg, &tmp, 0);
1863 com_err(program_name, 0,
1864 _("bad inode size - %s"),
1868 if (!((new_inode_size &
1869 (new_inode_size - 1)) == 0)) {
1870 com_err(program_name, 0,
1871 _("Inode size must be a "
1872 "power of two- %s"),
1876 open_flag = EXT2_FLAG_RW;
1885 if (optind < argc - 1 || optind == argc)
1887 if (!open_flag && !l_flag)
1889 io_options = strchr(argv[optind], '?');
1892 device_name = blkid_get_devname(NULL, argv[optind], NULL);
1894 com_err(program_name, 0, _("Unable to resolve '%s'"),
1900 #ifdef CONFIG_BUILD_FINDFS
1901 void do_findfs(int argc, char **argv)
1906 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1907 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1910 dev = blkid_get_devname(NULL, argv[1], NULL);
1912 com_err("findfs", 0, _("Unable to resolve '%s'"),
1921 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1923 char *buf, *token, *next, *p, *arg;
1928 buf = malloc(len+1);
1930 fprintf(stderr, "%s",
1931 _("Couldn't allocate memory to parse options!\n"));
1935 for (token = buf; token && *token; token = next) {
1936 p = strchr(token, ',');
1942 arg = strchr(token, '=');
1947 if (strcmp(token, "clear-mmp") == 0 ||
1948 strcmp(token, "clear_mmp") == 0) {
1950 } else if (strcmp(token, "mmp_update_interval") == 0) {
1956 intv = strtoul(arg, &p, 0);
1959 _("Invalid mmp_update_interval: %s\n"),
1965 intv = EXT4_MMP_UPDATE_INTERVAL;
1966 } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1968 _("mmp_update_interval too big: %lu\n"),
1973 printf(P_("Setting multiple mount protection update "
1974 "interval to %lu second\n",
1975 "Setting multiple mount protection update "
1976 "interval to %lu seconds\n", intv),
1978 fs->super->s_mmp_update_interval = intv;
1979 ext2fs_mark_super_dirty(fs);
1980 } else if (!strcmp(token, "test_fs")) {
1981 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1982 printf("Setting test filesystem flag\n");
1983 ext2fs_mark_super_dirty(fs);
1984 } else if (!strcmp(token, "^test_fs")) {
1985 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1986 printf("Clearing test filesystem flag\n");
1987 ext2fs_mark_super_dirty(fs);
1988 } else if (strcmp(token, "stride") == 0) {
1993 stride = strtoul(arg, &p, 0);
1996 _("Invalid RAID stride: %s\n"),
2002 } else if (strcmp(token, "stripe-width") == 0 ||
2003 strcmp(token, "stripe_width") == 0) {
2008 stripe_width = strtoul(arg, &p, 0);
2011 _("Invalid RAID stripe-width: %s\n"),
2016 stripe_width_set = 1;
2017 } else if (strcmp(token, "hash_alg") == 0 ||
2018 strcmp(token, "hash-alg") == 0) {
2023 hash_alg = e2p_string2hash(arg);
2026 _("Invalid hash algorithm: %s\n"),
2031 fs->super->s_def_hash_version = hash_alg;
2032 printf(_("Setting default hash algorithm "
2035 ext2fs_mark_super_dirty(fs);
2036 } else if (!strcmp(token, "mount_opts")) {
2041 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2043 "Extended mount options too long\n");
2046 ext_mount_opts = strdup(arg);
2051 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2052 "Extended options are separated by commas, "
2053 "and may take an argument which\n"
2054 "\tis set off by an equals ('=') sign.\n\n"
2055 "Valid extended options are:\n"
2057 "\thash_alg=<hash algorithm>\n"
2058 "\tmount_opts=<extended default mount options>\n"
2059 "\tstride=<RAID per-disk chunk size in blocks>\n"
2060 "\tstripe_width=<RAID stride*data disks in blocks>\n"
2072 * Fill in the block bitmap bmap with the information regarding the
2073 * blocks to be moved
2075 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2076 ext2fs_block_bitmap bmap)
2080 ext2_badblocks_list bb_list = 0;
2081 blk64_t j, needed_blocks = 0;
2082 blk64_t start_blk, end_blk;
2084 retval = ext2fs_read_bb_inode(fs, &bb_list);
2088 for (i = 0; i < fs->group_desc_count; i++) {
2089 start_blk = ext2fs_inode_table_loc(fs, i) +
2090 fs->inode_blocks_per_group;
2092 end_blk = ext2fs_inode_table_loc(fs, i) +
2093 new_ino_blks_per_grp;
2095 for (j = start_blk; j < end_blk; j++) {
2096 if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2098 * IF the block is a bad block we fail
2100 if (ext2fs_badblocks_list_test(bb_list, j)) {
2101 ext2fs_badblocks_list_free(bb_list);
2105 ext2fs_mark_block_bitmap2(bmap, j);
2108 * We are going to use this block for
2109 * inode table. So mark them used.
2111 ext2fs_mark_block_bitmap2(fs->block_map, j);
2114 needed_blocks += end_blk - start_blk;
2117 ext2fs_badblocks_list_free(bb_list);
2118 if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2124 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2127 group = ext2fs_group_of_blk2(fs, blk);
2128 if (ext2fs_block_bitmap_loc(fs, group) == blk)
2130 if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2135 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2137 blk64_t start_blk, end_blk;
2138 start_blk = fs->super->s_first_data_block +
2139 EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2141 * We cannot get new block beyond end_blk for for the last block group
2142 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2144 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2145 if (blk >= start_blk && blk <= end_blk)
2150 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2157 blk64_t blk, new_blk, goal;
2158 struct blk_move *bmv;
2160 retval = ext2fs_get_mem(fs->blocksize, &buf);
2164 for (new_blk = blk = fs->super->s_first_data_block;
2165 blk < ext2fs_blocks_count(fs->super); blk++) {
2166 if (!ext2fs_test_block_bitmap2(bmap, blk))
2169 if (ext2fs_is_meta_block(fs, blk)) {
2171 * If the block is mapping a fs meta data block
2172 * like group desc/block bitmap/inode bitmap. We
2173 * should find a block in the same group and fix
2174 * the respective fs metadata pointers. Otherwise
2177 group = ext2fs_group_of_blk2(fs, blk);
2178 goal = ext2fs_group_first_block2(fs, group);
2184 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2188 /* new fs meta data block should be in the same group */
2189 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2194 /* Mark this block as allocated */
2195 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2197 /* Add it to block move list */
2198 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2203 bmv->new_loc = new_blk;
2205 list_add(&(bmv->list), &blk_move_list);
2207 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2211 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2217 ext2fs_free_mem(&buf);
2221 static blk64_t translate_block(blk64_t blk)
2223 struct list_head *entry;
2224 struct blk_move *bmv;
2226 list_for_each(entry, &blk_move_list) {
2227 bmv = list_entry(entry, struct blk_move, list);
2228 if (bmv->old_loc == blk)
2229 return bmv->new_loc;
2235 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2237 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2238 blk64_t ref_block EXT2FS_ATTR((unused)),
2239 int ref_offset EXT2FS_ATTR((unused)),
2244 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2246 if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2248 new_blk = translate_block(*block_nr);
2250 *block_nr = new_blk;
2252 * This will force the ext2fs_write_inode in the iterator
2254 ret |= BLOCK_CHANGED;
2260 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2262 errcode_t retval = 0;
2265 char *block_buf = 0;
2266 struct ext2_inode inode;
2267 ext2_inode_scan scan = NULL;
2269 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2273 retval = ext2fs_open_inode_scan(fs, 0, &scan);
2278 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2285 if (inode.i_links_count == 0)
2286 continue; /* inode not in use */
2289 * If we end up modifying the journal inode
2290 * the sb->s_jnl_blocks will differ. But a
2291 * subsequent e2fsck fixes that.
2292 * Do we need to fix this ??
2295 if (ext2fs_file_acl_block(fs, &inode) &&
2296 ext2fs_test_block_bitmap2(bmap,
2297 ext2fs_file_acl_block(fs, &inode))) {
2298 blk = translate_block(ext2fs_file_acl_block(fs,
2303 ext2fs_file_acl_block_set(fs, &inode, blk);
2306 * Write the inode to disk so that inode table
2309 retval = ext2fs_write_inode(fs, ino, &inode);
2314 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2317 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2318 process_block, bmap);
2325 ext2fs_free_mem(&block_buf);
2326 ext2fs_close_inode_scan(scan);
2332 * We need to scan for inode and block bitmaps that may need to be
2333 * moved. This can take place if the filesystem was formatted for
2334 * RAID arrays using the mke2fs's extended option "stride".
2336 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2339 blk64_t blk, new_blk;
2341 for (i = 0; i < fs->group_desc_count; i++) {
2342 blk = ext2fs_block_bitmap_loc(fs, i);
2343 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2344 new_blk = translate_block(blk);
2347 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2350 blk = ext2fs_inode_bitmap_loc(fs, i);
2351 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2352 new_blk = translate_block(blk);
2355 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2361 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2366 int new_ino_blks_per_grp;
2368 char *old_itable = NULL, *new_itable = NULL;
2369 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2370 unsigned long old_ino_size;
2371 int old_itable_size, new_itable_size;
2373 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2374 old_ino_size = EXT2_INODE_SIZE(fs->super);
2376 new_ino_blks_per_grp = ext2fs_div_ceil(
2377 EXT2_INODES_PER_GROUP(fs->super) *
2381 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2383 retval = ext2fs_get_mem(old_itable_size, &old_itable);
2387 retval = ext2fs_get_mem(new_itable_size, &new_itable);
2391 tmp_old_itable = old_itable;
2392 tmp_new_itable = new_itable;
2394 for (i = 0; i < fs->group_desc_count; i++) {
2395 blk = ext2fs_inode_table_loc(fs, i);
2396 retval = io_channel_read_blk64(fs->io, blk,
2397 fs->inode_blocks_per_group, old_itable);
2401 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2402 memcpy(new_itable, old_itable, old_ino_size);
2404 memset(new_itable+old_ino_size, 0,
2405 new_ino_size - old_ino_size);
2407 new_itable += new_ino_size;
2408 old_itable += old_ino_size;
2411 /* reset the pointer */
2412 old_itable = tmp_old_itable;
2413 new_itable = tmp_new_itable;
2415 retval = io_channel_write_blk64(fs->io, blk,
2416 new_ino_blks_per_grp, new_itable);
2421 /* Update the meta data */
2422 fs->inode_blocks_per_group = new_ino_blks_per_grp;
2423 ext2fs_free_inode_cache(fs->icache);
2425 fs->super->s_inode_size = new_ino_size;
2429 ext2fs_free_mem(&old_itable);
2432 ext2fs_free_mem(&new_itable);
2437 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2441 unsigned int group = 0;
2442 unsigned int count = 0;
2447 * First calculate the block statistics
2449 for (blk = fs->super->s_first_data_block;
2450 blk < ext2fs_blocks_count(fs->super); blk++) {
2451 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2456 if ((count == fs->super->s_blocks_per_group) ||
2457 (blk == ext2fs_blocks_count(fs->super)-1)) {
2458 ext2fs_bg_free_blocks_count_set(fs, group++,
2464 total_free = EXT2FS_C2B(fs, total_free);
2465 ext2fs_free_blocks_count_set(fs->super, total_free);
2468 * Next, calculate the inode statistics
2475 /* Protect loop from wrap-around if s_inodes_count maxed */
2476 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2477 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2482 if ((count == fs->super->s_inodes_per_group) ||
2483 (ino == fs->super->s_inodes_count)) {
2484 ext2fs_bg_free_inodes_count_set(fs, group++,
2490 fs->super->s_free_inodes_count = total_free;
2491 ext2fs_mark_super_dirty(fs);
2495 #define list_for_each_safe(pos, pnext, head) \
2496 for (pos = (head)->next, pnext = pos->next; pos != (head); \
2497 pos = pnext, pnext = pos->next)
2499 static void free_blk_move_list(void)
2501 struct list_head *entry, *tmp;
2502 struct blk_move *bmv;
2504 list_for_each_safe(entry, tmp, &blk_move_list) {
2505 bmv = list_entry(entry, struct blk_move, list);
2507 ext2fs_free_mem(&bmv);
2512 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2515 int new_ino_blks_per_grp;
2516 ext2fs_block_bitmap bmap;
2518 retval = ext2fs_read_inode_bitmap(fs);
2520 fputs(_("Failed to read inode bitmap\n"), stderr);
2523 retval = ext2fs_read_block_bitmap(fs);
2525 fputs(_("Failed to read block bitmap\n"), stderr);
2528 INIT_LIST_HEAD(&blk_move_list);
2531 new_ino_blks_per_grp = ext2fs_div_ceil(
2532 EXT2_INODES_PER_GROUP(fs->super)*
2536 /* We may change the file system.
2537 * Mark the file system as invalid so that
2538 * the user is prompted to run fsck.
2540 fs->super->s_state &= ~EXT2_VALID_FS;
2542 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2545 fputs(_("Failed to allocate block bitmap when "
2546 "increasing inode size\n"), stderr);
2549 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2551 fputs(_("Not enough space to increase inode size \n"), stderr);
2554 retval = move_block(fs, bmap);
2556 fputs(_("Failed to relocate blocks during inode resize \n"),
2560 retval = inode_scan_and_fix(fs, bmap);
2564 retval = group_desc_scan_and_fix(fs, bmap);
2568 retval = expand_inode_table(fs, new_size);
2572 ext2fs_calculate_summary_stats(fs);
2574 fs->super->s_state |= EXT2_VALID_FS;
2575 /* mark super block and block bitmap as dirty */
2576 ext2fs_mark_super_dirty(fs);
2577 ext2fs_mark_bb_dirty(fs);
2580 free_blk_move_list();
2581 ext2fs_free_block_bitmap(bmap);
2586 free_blk_move_list();
2587 ext2fs_free_block_bitmap(bmap);
2588 fputs(_("Error in resizing the inode size.\n"
2589 "Run e2undo to undo the "
2590 "file system changes. \n"), stderr);
2595 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2597 errcode_t retval = 0;
2598 const char *tdb_dir;
2599 char *tdb_file = NULL;
2600 char *dev_name, *tmp_name;
2602 /* (re)open a specific undo file */
2603 if (undo_file && undo_file[0] != 0) {
2604 retval = set_undo_io_backing_manager(*io_ptr);
2607 *io_ptr = undo_io_manager;
2608 retval = set_undo_io_backup_file(undo_file);
2611 printf(_("Overwriting existing filesystem; this can be undone "
2612 "using the command:\n"
2613 " e2undo %s %s\n\n"),
2619 * Configuration via a conf file would be
2622 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2624 tdb_dir = "/var/lib/e2fsprogs";
2626 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2627 access(tdb_dir, W_OK))
2630 tmp_name = strdup(name);
2633 dev_name = basename(tmp_name);
2634 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2639 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2642 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2644 com_err(program_name, retval,
2645 _("while trying to delete %s"), tdb_file);
2649 retval = set_undo_io_backing_manager(*io_ptr);
2652 *io_ptr = undo_io_manager;
2653 retval = set_undo_io_backup_file(tdb_file);
2656 printf(_("Overwriting existing filesystem; this can be undone "
2657 "using the command:\n"
2658 " e2undo %s %s\n\n"),
2666 com_err("tune2fs", retval, "while trying to setup undo file\n");
2671 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2673 int retval, nr_users, start;
2674 journal_superblock_t *jsb;
2678 char uuid[UUID_STR_SIZE];
2679 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2681 if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2684 uuid_unparse(sb->s_journal_uuid, uuid);
2685 journal_path = blkid_get_devname(NULL, "UUID", uuid);
2689 retval = ext2fs_open2(journal_path, io_options,
2690 EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2691 0, 0, unix_io_manager, &jfs);
2693 com_err(program_name, retval,
2694 _("while trying to open %s"),
2699 retval = get_journal_sb(jfs, buf);
2701 if (retval == EXT2_ET_UNSUPP_FEATURE)
2702 fprintf(stderr, _("%s is not a journal device.\n"),
2707 jsb = (journal_superblock_t *) buf;
2708 /* Find the filesystem UUID */
2709 nr_users = ntohl(jsb->s_nr_users);
2711 j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2712 if (j_uuid == NULL) {
2713 fputs(_("Filesystem's UUID not found on journal device.\n"),
2715 return EXT2_ET_LOAD_EXT_JOURNAL;
2718 memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2720 start = ext2fs_journal_sb_start(jfs->blocksize);
2721 /* Write back the journal superblock */
2722 retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2724 com_err(program_name, retval,
2725 "while writing journal superblock.");
2734 #ifndef BUILD_AS_LIB
2735 int main(int argc, char **argv)
2737 int tune2fs_main(int argc, char **argv)
2738 #endif /* BUILD_AS_LIB */
2742 struct ext2_super_block *sb;
2743 io_manager io_ptr, io_ptr_orig = NULL;
2745 char default_undo_file[1] = { 0 };
2748 setlocale(LC_MESSAGES, "");
2749 setlocale(LC_CTYPE, "");
2750 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2751 textdomain(NLS_CAT_NAME);
2752 set_com_err_gettext(gettext);
2755 program_name = *argv;
2756 add_error_table(&et_ext2_error_table);
2758 #ifdef CONFIG_BUILD_FINDFS
2759 if (strcmp(get_progname(argv[0]), "findfs") == 0)
2760 do_findfs(argc, argv);
2762 if (strcmp(get_progname(argv[0]), "e2label") == 0)
2763 parse_e2label_options(argc, argv);
2765 parse_tune2fs_options(argc, argv);
2767 #ifdef CONFIG_TESTIO_DEBUG
2768 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2769 io_ptr = test_io_manager;
2770 test_io_backing_manager = unix_io_manager;
2773 io_ptr = unix_io_manager;
2776 if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2777 open_flag |= EXT2_FLAG_SKIP_MMP;
2779 open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2781 /* keep the filesystem struct around to dump MMP data */
2782 open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2784 retval = ext2fs_open2(device_name, io_options, open_flag,
2787 com_err(program_name, retval,
2788 _("while trying to open %s"),
2790 if (retval == EXT2_ET_MMP_FSCK_ON ||
2791 retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2792 dump_mmp_msg(fs->mmp_buf,
2793 _("If you are sure the filesystem "
2794 "is not in use on any node, run:\n"
2795 "'tune2fs -f -E clear_mmp {device}'\n"));
2796 else if (retval == EXT2_ET_MMP_FAILED)
2797 dump_mmp_msg(fs->mmp_buf, NULL);
2798 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2800 _("MMP block magic is bad. Try to fix it by "
2801 "running:\n'e2fsck -f %s'\n"), device_name);
2802 else if (retval == EXT2_ET_BAD_MAGIC)
2803 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2804 else if (retval != EXT2_ET_MMP_FAILED)
2805 fprintf(stderr, "%s",
2806 _("Couldn't find valid filesystem superblock.\n"));
2811 if (ext2fs_has_feature_journal_dev(fs->super)) {
2812 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2816 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2820 * Check the inode size is right so we can issue an
2821 * error message and bail before setting up the tdb
2824 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2825 fprintf(stderr, _("The inode size is already %lu\n"),
2830 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2831 fprintf(stderr, "%s",
2832 _("Shrinking inode size is not supported\n"));
2836 if (new_inode_size > fs->blocksize) {
2837 fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2838 new_inode_size, fs->blocksize);
2842 check_fsck_needed(fs,
2843 _("Resizing inodes could take some time."));
2845 * If inode resize is requested use the
2848 undo_file = default_undo_file;
2851 /* Set up an undo file */
2852 if (undo_file && io_ptr_orig == NULL) {
2853 io_ptr_orig = io_ptr;
2854 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2859 if (io_ptr != io_ptr_orig) {
2860 ext2fs_close_free(&fs);
2866 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2869 /* For e2label emulation */
2870 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
2872 remove_error_table(&et_ext2_error_table);
2876 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2878 com_err("ext2fs_check_if_mount", retval,
2879 _("while determining whether %s is mounted."),
2884 /* Normally we only need to write out the superblock */
2885 fs->flags |= EXT2_FLAG_SUPER_ONLY;
2888 sb->s_max_mnt_count = max_mount_count;
2889 ext2fs_mark_super_dirty(fs);
2890 printf(_("Setting maximal mount count to %d\n"),
2894 sb->s_mnt_count = mount_count;
2895 ext2fs_mark_super_dirty(fs);
2896 printf(_("Setting current mount count to %d\n"), mount_count);
2899 sb->s_errors = errors;
2900 ext2fs_mark_super_dirty(fs);
2901 printf(_("Setting error behavior to %d\n"), errors);
2904 sb->s_def_resgid = resgid;
2905 ext2fs_mark_super_dirty(fs);
2906 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
2909 if ((unsigned long long)interval >= (1ULL << 32)) {
2910 com_err(program_name, 0,
2911 _("interval between checks is too big (%lu)"),
2916 sb->s_checkinterval = interval;
2917 ext2fs_mark_super_dirty(fs);
2918 printf(_("Setting interval between checks to %lu seconds\n"),
2922 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2923 ext2fs_blocks_count(sb) / 100.0);
2924 ext2fs_mark_super_dirty(fs);
2925 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2926 reserved_ratio, ext2fs_r_blocks_count(sb));
2929 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2930 com_err(program_name, 0,
2931 _("reserved blocks count is too big (%llu)"),
2936 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2937 ext2fs_mark_super_dirty(fs);
2938 printf(_("Setting reserved blocks count to %llu\n"),
2942 if (ext2fs_has_feature_sparse_super(sb)) {
2943 fputs(_("\nThe filesystem already has sparse "
2944 "superblocks.\n"), stderr);
2945 } else if (ext2fs_has_feature_meta_bg(sb)) {
2946 fputs(_("\nSetting the sparse superblock flag not "
2947 "supported\nfor filesystems with "
2948 "the meta_bg feature enabled.\n"),
2953 ext2fs_set_feature_sparse_super(sb);
2954 sb->s_state &= ~EXT2_VALID_FS;
2955 ext2fs_mark_super_dirty(fs);
2956 printf(_("\nSparse superblock flag set. %s"),
2961 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
2967 sb->s_lastcheck = last_check_time;
2968 ext2fs_mark_super_dirty(fs);
2969 printf(_("Setting time filesystem last checked to %s\n"),
2970 ctime(&last_check_time));
2973 sb->s_def_resuid = resuid;
2974 ext2fs_mark_super_dirty(fs);
2975 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2978 if (strlen(new_label) > sizeof(sb->s_volume_name))
2979 fputs(_("Warning: label too long, truncating.\n"),
2981 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2982 strncpy(sb->s_volume_name, new_label,
2983 sizeof(sb->s_volume_name));
2984 ext2fs_mark_super_dirty(fs);
2987 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
2988 strncpy(sb->s_last_mounted, new_last_mounted,
2989 sizeof(sb->s_last_mounted));
2990 ext2fs_mark_super_dirty(fs);
2993 rc = update_mntopts(fs, mntopts_cmd);
2998 rc = update_feature_set(fs, features_cmd);
3003 rc = parse_extended_opts(fs, extended_cmd);
3006 if (clear_mmp && !f_flag) {
3007 fputs(_("Error in using clear_mmp. "
3008 "It must be used with -f\n"),
3014 rc = ext2fs_mmp_clear(fs);
3017 if (journal_size || journal_device) {
3018 rc = add_journal(fs);
3024 if (mount_flags & EXT2_MF_MOUNTED) {
3025 fputs(_("The quota feature may only be changed when "
3026 "the filesystem is unmounted.\n"), stderr);
3030 handle_quota_options(fs);
3036 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3037 __u8 old_uuid[UUID_SIZE];
3039 if (ext2fs_has_group_desc_csum(fs)) {
3041 * Changing the UUID on a metadata_csum FS requires
3042 * rewriting all metadata, which can race with a
3043 * mounted fs. Don't allow that unless we're saving
3044 * the checksum seed.
3046 if ((mount_flags & EXT2_MF_MOUNTED) &&
3047 !ext2fs_has_feature_csum_seed(fs->super) &&
3048 ext2fs_has_feature_metadata_csum(fs->super)) {
3049 fputs(_("The UUID may only be "
3050 "changed when the filesystem is "
3051 "unmounted.\n"), stderr);
3052 fputs(_("If you only use kernels newer than "
3053 "v4.4, run 'tune2fs -O "
3054 "metadata_csum_seed' and re-run this "
3055 "command.\n"), stderr);
3056 try_confirm_csum_seed_support();
3059 if (!ext2fs_has_feature_csum_seed(fs->super))
3060 check_fsck_needed(fs,
3061 _("Setting UUID on a checksummed "
3062 "filesystem could take some time."));
3065 * Determine if the block group checksums are
3066 * correct so we know whether or not to set
3069 for (i = 0; i < fs->group_desc_count; i++)
3070 if (!ext2fs_group_desc_csum_verify(fs, i))
3072 if (i >= fs->group_desc_count)
3076 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3077 if ((strcasecmp(new_UUID, "null") == 0) ||
3078 (strcasecmp(new_UUID, "clear") == 0)) {
3079 uuid_clear(sb->s_uuid);
3080 } else if (strcasecmp(new_UUID, "time") == 0) {
3081 uuid_generate_time(sb->s_uuid);
3082 } else if (strcasecmp(new_UUID, "random") == 0) {
3083 uuid_generate(sb->s_uuid);
3084 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3085 com_err(program_name, 0, "%s",
3086 _("Invalid UUID format\n"));
3090 ext2fs_init_csum_seed(fs);
3092 for (i = 0; i < fs->group_desc_count; i++)
3093 ext2fs_group_desc_csum_set(fs, i);
3094 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3097 /* If this is a journal dev, we need to copy UUID into jsb */
3098 if (!(rc = get_journal_sb(fs, buf))) {
3099 journal_superblock_t *jsb;
3101 jsb = (journal_superblock_t *) buf;
3102 fputs(_("Need to update journal superblock.\n"), stdout);
3103 memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3105 /* Writeback the journal superblock */
3106 if ((rc = io_channel_write_blk64(fs->io,
3107 ext2fs_journal_sb_start(fs->blocksize),
3108 -SUPERBLOCK_SIZE, buf)))
3110 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3113 rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3115 if ((rc = fs_update_journal_user(sb, old_uuid)))
3119 ext2fs_mark_super_dirty(fs);
3120 if (ext2fs_has_feature_metadata_csum(fs->super) &&
3121 !ext2fs_has_feature_csum_seed(fs->super))
3122 rewrite_checksums = 1;
3126 if (mount_flags & EXT2_MF_MOUNTED) {
3127 fputs(_("The inode size may only be "
3128 "changed when the filesystem is "
3129 "unmounted.\n"), stderr);
3133 if (ext2fs_has_feature_flex_bg(fs->super)) {
3134 fputs(_("Changing the inode size not supported for "
3135 "filesystems with the flex_bg\n"
3136 "feature enabled.\n"),
3142 * We want to update group descriptor also
3143 * with the new free inode count
3145 if (rewrite_checksums)
3146 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3147 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3148 retval = resize_inode(fs, new_inode_size);
3149 if (rewrite_checksums)
3150 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3152 printf(_("Setting inode size %lu\n"),
3154 rewrite_checksums = 1;
3156 printf("%s", _("Failed to change inode size\n"));
3162 if (rewrite_checksums)
3163 rewrite_metadata_checksums(fs);
3168 sb->s_raid_stride = stride;
3169 ext2fs_mark_super_dirty(fs);
3170 printf(_("Setting stride size to %d\n"), stride);
3172 if (stripe_width_set) {
3173 sb->s_raid_stripe_width = stripe_width;
3174 ext2fs_mark_super_dirty(fs);
3175 printf(_("Setting stripe width to %d\n"), stripe_width);
3177 if (ext_mount_opts) {
3178 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3179 sizeof(fs->super->s_mount_opts));
3180 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3181 ext2fs_mark_super_dirty(fs);
3182 printf(_("Setting extended default mount options to '%s'\n"),
3184 free(ext_mount_opts);
3188 /* Warn if file system needs recovery and it is opened for writing. */
3189 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3190 (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3191 (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3193 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3194 "\te2fsck -E journal_only %s\n\n"
3195 "then rerun this command. Otherwise, any changes made may be overwritten\n"
3196 "by journal recovery.\n"), device_name);
3199 /* Recover the journal if possible. */
3200 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3201 ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3204 printf(_("Recovering journal.\n"));
3205 err = ext2fs_run_ext3_journal(&fs);
3207 com_err("tune2fs", err, "while recovering journal.\n");
3208 printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3211 ext2fs_clear_feature_journal_needs_recovery(fs->super);
3212 ext2fs_mark_super_dirty(fs);
3217 remove_error_table(&et_ext2_error_table);
3221 ext2fs_mmp_stop(fs);
3222 #ifndef BUILD_AS_LIB
3227 convert_64bit(fs, feature_64bit);
3228 return (ext2fs_close_free(&fs) ? 1 : 0);