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> */
51 #include <sys/types.h>
55 #include "ext2fs/ext2_fs.h"
56 #include "ext2fs/ext2fs.h"
57 #include "et/com_err.h"
58 #include "uuid/uuid.h"
62 #include "blkid/blkid.h"
63 #include "quota/quotaio.h"
65 #include "../version.h"
66 #include "nls-enable.h"
68 #define QOPT_ENABLE (1)
69 #define QOPT_DISABLE (-1)
71 extern int ask_yn(const char *string, int def);
73 const char *program_name = "tune2fs";
75 char *new_label, *new_last_mounted, *new_UUID;
77 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
78 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
81 static time_t last_check_time;
82 static int print_label;
83 static int max_mount_count, mount_count, mount_flags;
84 static unsigned long interval;
85 static blk64_t reserved_blocks;
86 static double reserved_ratio;
87 static unsigned long resgid, resuid;
88 static unsigned short errors;
90 static char *features_cmd;
91 static char *mntopts_cmd;
92 static int stride, stripe_width;
93 static int stride_set, stripe_width_set;
94 static char *extended_cmd;
95 static unsigned long new_inode_size;
96 static char *ext_mount_opts;
97 static int usrquota, grpquota;
98 static int rewrite_checksums;
100 int journal_size, journal_flags;
101 char *journal_device;
102 static blk64_t journal_location = ~0LL;
104 static struct list_head blk_move_list;
107 struct list_head list;
113 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
114 static const char *please_dir_fsck =
115 N_("Please run e2fsck -D on the filesystem.\n");
117 #ifdef CONFIG_BUILD_FINDFS
118 void do_findfs(int argc, char **argv);
121 static void usage(void)
124 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
126 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
127 "\t[-m reserved_blocks_percent] "
128 "[-o [^]mount_options[,...]] [-p mmp_update_interval]\n"
129 "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
130 "[-L volume_label]\n"
131 "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
133 "\t[-Q quota_options]\n"
135 "\t[-E extended-option[,...]] [-T last_check_time] "
136 "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
140 static __u32 ok_features[3] = {
142 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
143 EXT2_FEATURE_COMPAT_DIR_INDEX,
145 EXT2_FEATURE_INCOMPAT_FILETYPE |
146 EXT3_FEATURE_INCOMPAT_EXTENTS |
147 EXT4_FEATURE_INCOMPAT_FLEX_BG |
148 EXT4_FEATURE_INCOMPAT_MMP,
150 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
151 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
152 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
153 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
154 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
155 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
157 EXT4_FEATURE_RO_COMPAT_QUOTA |
159 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM
162 static __u32 clear_ok_features[3] = {
164 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
165 EXT2_FEATURE_COMPAT_RESIZE_INODE |
166 EXT2_FEATURE_COMPAT_DIR_INDEX,
168 EXT2_FEATURE_INCOMPAT_FILETYPE |
169 EXT4_FEATURE_INCOMPAT_FLEX_BG |
170 EXT4_FEATURE_INCOMPAT_MMP,
172 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
173 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
174 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
175 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
176 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
178 EXT4_FEATURE_RO_COMPAT_QUOTA |
180 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM
184 * Try to get journal super block if any
186 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
189 journal_superblock_t *jsb;
191 if (!(jfs->super->s_feature_incompat &
192 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
193 return EXT2_ET_UNSUPP_FEATURE;
196 /* Get the journal superblock */
197 if ((retval = io_channel_read_blk64(jfs->io,
198 ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
199 com_err(program_name, retval, "%s",
200 _("while reading journal superblock"));
204 jsb = (journal_superblock_t *) buf;
205 if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
206 (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
207 fputs(_("Journal superblock not found!\n"), stderr);
208 return EXT2_ET_BAD_MAGIC;
214 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE],
218 for (i = 0; i < nr_users; i++) {
219 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
220 return &s_users[i * UUID_SIZE];
227 * Remove an external journal from the filesystem
229 static int remove_journal_device(ext2_filsys fs)
233 char buf[SUPERBLOCK_SIZE];
234 journal_superblock_t *jsb;
237 int commit_remove_journal = 0;
241 commit_remove_journal = 1; /* force removal even if error */
243 uuid_unparse(fs->super->s_journal_uuid, buf);
244 journal_path = blkid_get_devname(NULL, "UUID", buf);
248 ext2fs_find_block_device(fs->super->s_journal_dev);
250 goto no_valid_journal;
253 #ifdef CONFIG_TESTIO_DEBUG
254 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
255 io_ptr = test_io_manager;
256 test_io_backing_manager = unix_io_manager;
259 io_ptr = unix_io_manager;
260 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
261 EXT2_FLAG_JOURNAL_DEV_OK, 0,
262 fs->blocksize, io_ptr, &jfs);
264 com_err(program_name, retval, "%s",
265 _("while trying to open external journal"));
266 goto no_valid_journal;
269 if ((retval = get_journal_sb(jfs, buf))) {
270 if (retval == EXT2_ET_UNSUPP_FEATURE)
271 fprintf(stderr, _("%s is not a journal device.\n"),
273 goto no_valid_journal;
276 jsb = (journal_superblock_t *) buf;
277 /* Find the filesystem UUID */
278 nr_users = ntohl(jsb->s_nr_users);
280 if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
281 fputs(_("Filesystem's UUID not found on journal device.\n"),
283 commit_remove_journal = 1;
284 goto no_valid_journal;
287 for (i = 0; i < nr_users; i++)
288 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
289 jsb->s_nr_users = htonl(nr_users);
291 /* Write back the journal superblock */
292 retval = io_channel_write_blk64(jfs->io,
293 ext2fs_journal_sb_start(fs->blocksize),
294 -SUPERBLOCK_SIZE, buf);
296 com_err(program_name, retval,
297 "while writing journal superblock.");
298 goto no_valid_journal;
301 commit_remove_journal = 1;
304 if (commit_remove_journal == 0) {
305 fputs(_("Cannot locate journal device. It was NOT removed\n"
306 "Use -f option to remove missing journal device.\n"),
310 fs->super->s_journal_dev = 0;
311 uuid_clear(fs->super->s_journal_uuid);
312 ext2fs_mark_super_dirty(fs);
313 fputs(_("Journal removed\n"), stdout);
319 /* Helper function for remove_journal_inode */
320 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
321 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
322 blk64_t ref_block EXT2FS_ATTR((unused)),
323 int ref_offset EXT2FS_ATTR((unused)),
324 void *private EXT2FS_ATTR((unused)))
330 ext2fs_unmark_block_bitmap2(fs->block_map, block);
331 group = ext2fs_group_of_blk2(fs, block);
332 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
333 ext2fs_group_desc_csum_set(fs, group);
334 ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
339 * Remove the journal inode from the filesystem
341 static errcode_t remove_journal_inode(ext2_filsys fs)
343 struct ext2_inode inode;
345 ino_t ino = fs->super->s_journal_inum;
347 retval = ext2fs_read_inode(fs, ino, &inode);
349 com_err(program_name, retval, "%s",
350 _("while reading journal inode"));
353 if (ino == EXT2_JOURNAL_INO) {
354 retval = ext2fs_read_bitmaps(fs);
356 com_err(program_name, retval, "%s",
357 _("while reading bitmaps"));
360 retval = ext2fs_block_iterate3(fs, ino,
361 BLOCK_FLAG_READ_ONLY, NULL,
362 release_blocks_proc, NULL);
364 com_err(program_name, retval, "%s",
365 _("while clearing journal inode"));
368 memset(&inode, 0, sizeof(inode));
369 ext2fs_mark_bb_dirty(fs);
370 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
372 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
373 retval = ext2fs_write_inode(fs, ino, &inode);
375 com_err(program_name, retval, "%s",
376 _("while writing journal inode"));
379 fs->super->s_journal_inum = 0;
380 ext2fs_mark_super_dirty(fs);
386 * Update the default mount options
388 static int update_mntopts(ext2_filsys fs, char *mntopts)
390 struct ext2_super_block *sb = fs->super;
392 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
393 fprintf(stderr, _("Invalid mount option set: %s\n"),
397 ext2fs_mark_super_dirty(fs);
402 static int check_fsck_needed(ext2_filsys fs)
404 if (fs->super->s_state & EXT2_VALID_FS)
406 printf("\n%s\n", _(please_fsck));
407 if (mount_flags & EXT2_MF_READONLY)
408 printf("%s", _("(and reboot afterwards!)\n"));
412 static void request_dir_fsck_afterwards(ext2_filsys fs)
414 static int requested;
418 fs->super->s_state &= ~EXT2_VALID_FS;
419 printf("\n%s\n", _(please_dir_fsck));
420 if (mount_flags & EXT2_MF_READONLY)
421 printf("%s", _("(and reboot afterwards!)\n"));
424 static void request_fsck_afterwards(ext2_filsys fs)
426 static int requested = 0;
430 fs->super->s_state &= ~EXT2_VALID_FS;
431 printf("\n%s\n", _(please_fsck));
432 if (mount_flags & EXT2_MF_READONLY)
433 printf("%s", _("(and reboot afterwards!)\n"));
436 /* Rewrite extents */
437 static errcode_t rewrite_extents(ext2_filsys fs, ext2_ino_t ino,
438 struct ext2_inode *inode)
440 ext2_extent_handle_t handle;
441 struct ext2fs_extent extent;
442 int op = EXT2_EXTENT_ROOT;
445 if (!(inode->i_flags & EXT4_EXTENTS_FL))
448 errcode = ext2fs_extent_open(fs, ino, &handle);
453 errcode = ext2fs_extent_get(handle, op, &extent);
457 /* Root node is in the separately checksummed inode */
458 if (op == EXT2_EXTENT_ROOT) {
459 op = EXT2_EXTENT_NEXT;
462 op = EXT2_EXTENT_NEXT;
464 /* Only visit the first extent in each extent block */
465 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
467 errcode = ext2fs_extent_replace(handle, 0, &extent);
472 /* Ok if we run off the end */
473 if (errcode == EXT2_ET_EXTENT_NO_NEXT)
479 * Rewrite directory blocks with checksums
481 struct rewrite_dir_context {
488 static int rewrite_dir_block(ext2_filsys fs,
490 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
491 blk64_t ref_block EXT2FS_ATTR((unused)),
492 int ref_offset EXT2FS_ATTR((unused)),
495 struct ext2_dx_countlimit *dcl = NULL;
496 struct rewrite_dir_context *ctx = priv_data;
497 int dcl_offset, changed = 0;
499 ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
504 /* if htree node... */
506 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
509 if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
510 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
511 /* Ensure limit is the max size */
512 int max_entries = (fs->blocksize - dcl_offset) /
513 sizeof(struct ext2_dx_entry);
514 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
516 dcl->limit = ext2fs_cpu_to_le16(max_entries);
519 /* If htree block is full then rebuild the dir */
520 if (ext2fs_le16_to_cpu(dcl->count) ==
521 ext2fs_le16_to_cpu(dcl->limit)) {
522 request_dir_fsck_afterwards(fs);
526 * Ensure dcl->limit is small enough to leave room for
529 int max_entries = (fs->blocksize - (dcl_offset +
530 sizeof(struct ext2_dx_tail))) /
531 sizeof(struct ext2_dx_entry);
532 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
533 dcl->limit = ext2fs_cpu_to_le16(max_entries);
534 /* Always rewrite checksum */
538 unsigned int rec_len, name_size;
539 char *top = ctx->buf + fs->blocksize;
540 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
541 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
543 /* Find last and penultimate dirent */
544 while ((char *)de < top) {
545 penultimate_de = last_de;
547 ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
548 if (!ctx->errcode && !rec_len)
549 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
552 de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
554 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
557 name_size = ext2fs_dirent_name_len(last_de);
559 if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
560 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
563 if (last_de->inode ||
565 rec_len != sizeof(struct ext2_dir_entry_tail))
568 * The last dirent is unused and the right length to
569 * have stored a checksum. Erase it.
571 ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
574 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
577 ext2fs_set_rec_len(fs, rec_len +
578 sizeof(struct ext2_dir_entry_tail),
582 unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
583 struct ext2_dir_entry_tail *t;
586 * If the last dirent looks like the tail, just update
589 if (!last_de->inode &&
590 rec_len == csum_size) {
591 t = (struct ext2_dir_entry_tail *)last_de;
592 t->det_reserved_name_len =
593 EXT2_DIR_NAME_LEN_CSUM;
598 name_size = (name_size & ~3) + 4;
599 /* If there's not enough space for the tail, e2fsck */
600 if (rec_len <= (8 + name_size + csum_size)) {
601 request_dir_fsck_afterwards(fs);
604 /* Shorten that last de and insert the tail */
605 ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
606 t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
607 ext2fs_initialize_dirent_tail(fs, t);
609 /* Always update checksum */
618 ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
626 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
627 struct ext2_inode *inode)
630 struct rewrite_dir_context ctx;
632 retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
636 ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
639 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
640 BLOCK_FLAG_DATA_ONLY,
641 0, rewrite_dir_block, &ctx);
643 ext2fs_free_mem(&ctx.buf);
651 * Forcibly set checksums in all inodes.
653 static void rewrite_inodes(ext2_filsys fs)
655 int length = EXT2_INODE_SIZE(fs->super);
656 struct ext2_inode *inode, *zero;
658 ext2_inode_scan scan;
661 blk64_t file_acl_block;
664 if (fs->super->s_creator_os != EXT2_OS_LINUX)
667 retval = ext2fs_open_inode_scan(fs, 0, &scan);
669 com_err("set_csum", retval, "while opening inode scan");
673 retval = ext2fs_get_mem(length, &inode);
675 com_err("set_csum", retval, "while allocating memory");
679 retval = ext2fs_get_memzero(length, &zero);
681 com_err("set_csum", retval, "while allocating memory");
685 retval = ext2fs_get_mem(fs->blocksize, &ea_buf);
687 com_err("set_csum", retval, "while allocating memory");
692 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
694 com_err("set_csum", retval, "while getting next inode");
699 if (ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
702 if (memcmp(inode, zero, length) != 0) {
703 memset(inode, 0, length);
711 retval = ext2fs_write_inode_full(fs, ino, inode,
714 com_err("set_csum", retval, "while writing "
720 retval = rewrite_extents(fs, ino, inode);
722 com_err("rewrite_extents", retval,
723 "while rewriting extents");
727 if (LINUX_S_ISDIR(inode->i_mode) &&
728 ext2fs_inode_has_valid_blocks2(fs, inode)) {
729 retval = rewrite_directory(fs, ino, inode);
731 com_err("rewrite_directory", retval,
732 "while rewriting directories");
737 file_acl_block = ext2fs_file_acl_block(fs, inode);
740 retval = ext2fs_read_ext_attr3(fs, file_acl_block, ea_buf, ino);
742 com_err("rewrite_eablock", retval,
743 "while rewriting extended attribute");
746 retval = ext2fs_write_ext_attr3(fs, file_acl_block, ea_buf,
749 com_err("rewrite_eablock", retval,
750 "while rewriting extended attribute");
755 ext2fs_free_mem(&zero);
756 ext2fs_free_mem(&inode);
757 ext2fs_free_mem(&ea_buf);
758 ext2fs_close_inode_scan(scan);
761 static void rewrite_metadata_checksums(ext2_filsys fs)
766 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
767 ext2fs_init_csum_seed(fs);
768 for (i = 0; i < fs->group_desc_count; i++)
769 ext2fs_group_desc_csum_set(fs, i);
770 retval = ext2fs_read_bitmaps(fs);
772 com_err("rewrite_metadata_checksums", retval,
773 "while reading bitmaps");
777 ext2fs_mark_ib_dirty(fs);
778 ext2fs_mark_bb_dirty(fs);
779 ext2fs_mmp_update2(fs, 1);
780 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
781 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
782 if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
783 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
784 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
786 fs->super->s_checksum_type = 0;
787 ext2fs_mark_super_dirty(fs);
790 static void enable_uninit_bg(ext2_filsys fs)
792 struct ext2_group_desc *gd;
795 for (i = 0; i < fs->group_desc_count; i++) {
796 gd = ext2fs_group_desc(fs, fs->group_desc, i);
797 gd->bg_itable_unused = 0;
798 gd->bg_flags = EXT2_BG_INODE_ZEROED;
799 ext2fs_group_desc_csum_set(fs, i);
801 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
804 static errcode_t zero_empty_inodes(ext2_filsys fs)
806 int length = EXT2_INODE_SIZE(fs->super);
807 struct ext2_inode *inode = NULL;
808 ext2_inode_scan scan;
812 retval = ext2fs_open_inode_scan(fs, 0, &scan);
816 retval = ext2fs_get_mem(length, &inode);
821 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
826 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
827 memset(inode, 0, length);
828 retval = ext2fs_write_inode_full(fs, ino, inode,
836 ext2fs_free_mem(&inode);
837 ext2fs_close_inode_scan(scan);
841 static void disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
843 struct ext2_group_desc *gd;
848 /* Load bitmaps to ensure that the uninit ones get written out */
849 fs->super->s_feature_ro_compat |= csum_feature_flag;
850 retval = ext2fs_read_bitmaps(fs);
852 com_err("disable_uninit_bg", retval,
853 "while reading bitmaps");
856 ext2fs_mark_ib_dirty(fs);
857 ext2fs_mark_bb_dirty(fs);
858 fs->super->s_feature_ro_compat &= ~csum_feature_flag;
860 /* If we're only turning off uninit_bg, zero the inodes */
861 if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
862 retval = zero_empty_inodes(fs);
864 com_err("disable_uninit_bg", retval,
865 "while zeroing unused inodes");
866 request_fsck_afterwards(fs);
870 /* The bbitmap is zeroed; we must mark group metadata blocks in use */
871 for (i = 0; i < fs->group_desc_count; i++) {
872 b = ext2fs_block_bitmap_loc(fs, i);
873 ext2fs_mark_block_bitmap2(fs->block_map, b);
874 b = ext2fs_inode_bitmap_loc(fs, i);
875 ext2fs_mark_block_bitmap2(fs->block_map, b);
877 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
878 if (retval == 0 && b)
879 ext2fs_mark_block_bitmap2(fs->block_map, b);
880 if (retval == 0 && c)
881 ext2fs_mark_block_bitmap2(fs->block_map, c);
882 if (retval == 0 && d)
883 ext2fs_mark_block_bitmap2(fs->block_map, d);
885 com_err("disable_uninit_bg", retval,
886 "while initializing block bitmaps");
887 request_fsck_afterwards(fs);
890 gd = ext2fs_group_desc(fs, fs->group_desc, i);
891 gd->bg_itable_unused = 0;
893 ext2fs_group_desc_csum_set(fs, i);
895 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
896 ext2fs_mark_super_dirty(fs);
900 * Update the feature set as provided by the user.
902 static int update_feature_set(ext2_filsys fs, char *features)
904 struct ext2_super_block *sb = fs->super;
905 __u32 old_features[3];
907 unsigned int mask_err;
909 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
910 ((&sb->s_feature_compat)[(type)] & (mask)))
911 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
912 !((&sb->s_feature_compat)[(type)] & (mask)))
913 #define FEATURE_CHANGED(type, mask) ((mask) & \
914 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
916 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
917 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
918 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
920 if (e2p_edit_feature2(features, &sb->s_feature_compat,
921 ok_features, clear_ok_features,
922 &type_err, &mask_err)) {
925 _("Invalid filesystem option set: %s\n"),
927 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
928 fprintf(stderr, _("Clearing filesystem feature '%s' "
930 e2p_feature2string(type_err &
931 E2P_FEATURE_TYPE_MASK,
934 fprintf(stderr, _("Setting filesystem feature '%s' "
936 e2p_feature2string(type_err, mask_err));
940 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
941 if ((mount_flags & EXT2_MF_MOUNTED) &&
942 !(mount_flags & EXT2_MF_READONLY)) {
943 fputs(_("The has_journal feature may only be "
944 "cleared when the filesystem is\n"
945 "unmounted or mounted "
946 "read-only.\n"), stderr);
949 if ((sb->s_feature_incompat &
950 EXT3_FEATURE_INCOMPAT_RECOVER) &&
952 fputs(_("The needs_recovery flag is set. "
953 "Please run e2fsck before clearing\n"
954 "the has_journal flag.\n"), stderr);
957 if (sb->s_journal_inum) {
958 if (remove_journal_inode(fs))
961 if (sb->s_journal_dev) {
962 if (remove_journal_device(fs))
967 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
968 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
969 if (sb->s_feature_incompat &
970 EXT2_FEATURE_INCOMPAT_META_BG) {
971 fputs(_("Setting filesystem feature 'sparse_super' "
972 "not supported\nfor filesystems with "
973 "the meta_bg feature enabled.\n"),
979 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
982 if ((mount_flags & EXT2_MF_MOUNTED) ||
983 (mount_flags & EXT2_MF_READONLY)) {
984 fputs(_("The multiple mount protection feature can't\n"
985 "be set if the filesystem is mounted or\n"
986 "read-only.\n"), stderr);
990 error = ext2fs_mmp_init(fs);
992 fputs(_("\nError while enabling multiple mount "
993 "protection feature."), stderr);
998 * We want to update group desc with the new free blocks count
1000 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1002 printf(_("Multiple mount protection has been enabled "
1003 "with update interval %ds.\n"),
1004 sb->s_mmp_update_interval);
1007 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1010 if (mount_flags & EXT2_MF_READONLY) {
1011 fputs(_("The multiple mount protection feature cannot\n"
1012 "be disabled if the filesystem is readonly.\n"),
1017 error = ext2fs_read_bitmaps(fs);
1019 fputs(_("Error while reading bitmaps\n"), stderr);
1023 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1025 struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1027 if (error == EXT2_ET_MMP_MAGIC_INVALID)
1028 printf(_("Magic number in MMP block does not "
1029 "match. expected: %x, actual: %x\n"),
1030 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1032 com_err(program_name, error, "%s",
1033 _("while reading MMP block."));
1037 /* We need to force out the group descriptors as well */
1038 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1039 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1041 sb->s_mmp_block = 0;
1042 sb->s_mmp_update_interval = 0;
1045 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1047 * If adding a journal flag, let the create journal
1048 * code below handle setting the flag and creating the
1049 * journal. We supply a default size if necessary.
1053 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1056 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1057 if (!sb->s_def_hash_version)
1058 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1059 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1060 uuid_generate((unsigned char *) sb->s_hash_seed);
1063 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1064 if (ext2fs_check_desc(fs)) {
1065 fputs(_("Clearing the flex_bg flag would "
1066 "cause the the filesystem to be\n"
1067 "inconsistent.\n"), stderr);
1072 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1073 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1074 if ((mount_flags & EXT2_MF_MOUNTED) &&
1075 !(mount_flags & EXT2_MF_READONLY)) {
1076 fputs(_("The huge_file feature may only be "
1077 "cleared when the filesystem is\n"
1078 "unmounted or mounted "
1079 "read-only.\n"), stderr);
1084 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1085 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1086 if (check_fsck_needed(fs))
1088 rewrite_checksums = 1;
1089 /* metadata_csum supersedes uninit_bg */
1090 fs->super->s_feature_ro_compat &=
1091 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1093 /* if uninit_bg was previously off, rewrite group desc */
1094 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1095 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1096 enable_uninit_bg(fs);
1099 * Since metadata_csum supersedes uninit_bg, pretend like
1100 * uninit_bg has been off all along.
1102 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1103 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1106 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1107 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1108 if (check_fsck_needed(fs))
1110 rewrite_checksums = 1;
1112 * If we're turning off metadata_csum and not turning on
1113 * uninit_bg, rewrite group desc.
1115 if (!(fs->super->s_feature_ro_compat &
1116 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1117 disable_uninit_bg(fs,
1118 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1121 * metadata_csum previously provided uninit_bg, so if
1122 * we're also setting the uninit_bg feature bit,
1123 * pretend like it was previously enabled. Checksums
1124 * will be rewritten with crc16 later.
1126 old_features[E2P_FEATURE_RO_INCOMPAT] |=
1127 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1130 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1131 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1132 /* Do not enable uninit_bg when metadata_csum enabled */
1133 if (fs->super->s_feature_ro_compat &
1134 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
1135 fs->super->s_feature_ro_compat &=
1136 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1138 enable_uninit_bg(fs);
1141 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1142 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1143 disable_uninit_bg(fs,
1144 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1146 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1147 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1149 * Set the Q_flag here and handle the quota options in the code
1154 /* Enable both user quota and group quota by default */
1155 usrquota = QOPT_ENABLE;
1156 grpquota = QOPT_ENABLE;
1158 sb->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
1161 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1162 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1164 * Set the Q_flag here and handle the quota options in the code
1168 fputs(_("\nWarning: '^quota' option overrides '-Q'"
1169 "arguments.\n"), stderr);
1171 /* Disable both user quota and group quota by default */
1172 usrquota = QOPT_DISABLE;
1173 grpquota = QOPT_DISABLE;
1176 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1177 (sb->s_feature_compat || sb->s_feature_ro_compat ||
1178 sb->s_feature_incompat))
1179 ext2fs_update_dynamic_rev(fs);
1181 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1182 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1183 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1184 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1185 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1186 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1187 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1188 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1189 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1190 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1191 request_fsck_afterwards(fs);
1193 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1194 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1195 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1196 ext2fs_mark_super_dirty(fs);
1202 * Add a journal to the filesystem.
1204 static int add_journal(ext2_filsys fs)
1206 unsigned long journal_blocks;
1211 if (fs->super->s_feature_compat &
1212 EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
1213 fputs(_("The filesystem already has a journal.\n"), stderr);
1216 if (journal_device) {
1217 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1219 proceed_question(-1);
1220 check_mount(journal_device, 0, _("journal"));
1221 #ifdef CONFIG_TESTIO_DEBUG
1222 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1223 io_ptr = test_io_manager;
1224 test_io_backing_manager = unix_io_manager;
1227 io_ptr = unix_io_manager;
1228 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1229 EXT2_FLAG_JOURNAL_DEV_OK, 0,
1230 fs->blocksize, io_ptr, &jfs);
1232 com_err(program_name, retval,
1233 _("\n\twhile trying to open journal on %s\n"),
1237 printf(_("Creating journal on device %s: "),
1241 retval = ext2fs_add_journal_device(fs, jfs);
1242 ext2fs_close_free(&jfs);
1244 com_err(program_name, retval,
1245 _("while adding filesystem to journal on %s"),
1249 fputs(_("done\n"), stdout);
1250 } else if (journal_size) {
1251 fputs(_("Creating journal inode: "), stdout);
1253 journal_blocks = figure_journal_size(journal_size, fs);
1255 if (journal_location_string)
1257 parse_num_blocks2(journal_location_string,
1258 fs->super->s_log_block_size);
1259 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1263 fprintf(stderr, "\n");
1264 com_err(program_name, retval, "%s",
1265 _("\n\twhile trying to create journal file"));
1268 fputs(_("done\n"), stdout);
1270 * If the filesystem wasn't mounted, we need to force
1271 * the block group descriptors out.
1273 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1274 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1276 print_check_message(fs->super->s_max_mnt_count,
1277 fs->super->s_checkinterval);
1281 free(journal_device);
1285 static void handle_quota_options(ext2_filsys fs)
1290 if (!usrquota && !grpquota)
1291 /* Nothing to do. */
1294 quota_init_context(&qctx, fs, -1);
1296 if (usrquota == QOPT_ENABLE || grpquota == QOPT_ENABLE)
1297 quota_compute_usage(qctx);
1299 if (usrquota == QOPT_ENABLE && !fs->super->s_usr_quota_inum) {
1300 if ((qf_ino = quota_file_exists(fs, USRQUOTA,
1302 quota_update_limits(qctx, qf_ino, USRQUOTA);
1303 quota_write_inode(qctx, USRQUOTA);
1304 } else if (usrquota == QOPT_DISABLE) {
1305 quota_remove_inode(fs, USRQUOTA);
1308 if (grpquota == QOPT_ENABLE && !fs->super->s_grp_quota_inum) {
1309 if ((qf_ino = quota_file_exists(fs, GRPQUOTA,
1311 quota_update_limits(qctx, qf_ino, GRPQUOTA);
1312 quota_write_inode(qctx, GRPQUOTA);
1313 } else if (grpquota == QOPT_DISABLE) {
1314 quota_remove_inode(fs, GRPQUOTA);
1317 quota_release_context(&qctx);
1319 if ((usrquota == QOPT_ENABLE) || (grpquota == QOPT_ENABLE)) {
1320 fs->super->s_feature_ro_compat |= EXT4_FEATURE_RO_COMPAT_QUOTA;
1321 ext2fs_mark_super_dirty(fs);
1322 } else if (!fs->super->s_usr_quota_inum &&
1323 !fs->super->s_grp_quota_inum) {
1324 fs->super->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
1325 ext2fs_mark_super_dirty(fs);
1332 static void parse_quota_opts(const char *opts)
1334 char *buf, *token, *next, *p;
1338 buf = malloc(len+1);
1340 fputs(_("Couldn't allocate memory to parse quota "
1341 "options!\n"), stderr);
1345 for (token = buf; token && *token; token = next) {
1346 p = strchr(token, ',');
1353 if (strcmp(token, "usrquota") == 0) {
1354 usrquota = QOPT_ENABLE;
1355 } else if (strcmp(token, "^usrquota") == 0) {
1356 usrquota = QOPT_DISABLE;
1357 } else if (strcmp(token, "grpquota") == 0) {
1358 grpquota = QOPT_ENABLE;
1359 } else if (strcmp(token, "^grpquota") == 0) {
1360 grpquota = QOPT_DISABLE;
1362 fputs(_("\nBad quota options specified.\n\n"
1363 "Following valid quota options are available "
1364 "(pass by separating with comma):\n"
1376 static void parse_e2label_options(int argc, char ** argv)
1378 if ((argc < 2) || (argc > 3)) {
1379 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1382 io_options = strchr(argv[1], '?');
1385 device_name = blkid_get_devname(NULL, argv[1], NULL);
1387 com_err("e2label", 0, _("Unable to resolve '%s'"),
1391 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1393 open_flag |= EXT2_FLAG_RW;
1395 new_label = argv[2];
1400 static time_t parse_time(char *str)
1404 if (strcmp(str, "now") == 0) {
1407 memset(&ts, 0, sizeof(ts));
1408 #ifdef HAVE_STRPTIME
1409 strptime(str, "%Y%m%d%H%M%S", &ts);
1411 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1412 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1415 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1416 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1417 ts.tm_min > 59 || ts.tm_sec > 61)
1420 if (ts.tm_mday == 0) {
1421 com_err(program_name, 0,
1422 _("Couldn't parse date/time specifier: %s"),
1427 return (mktime(&ts));
1430 static void parse_tune2fs_options(int argc, char **argv)
1436 char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:";
1439 strcat(optstring, "Q:");
1443 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1444 while ((c = getopt(argc, argv, optstring)) != EOF)
1447 max_mount_count = strtol(optarg, &tmp, 0);
1448 if (*tmp || max_mount_count > 16000) {
1449 com_err(program_name, 0,
1450 _("bad mounts count - %s"),
1454 if (max_mount_count == 0)
1455 max_mount_count = -1;
1457 open_flag = EXT2_FLAG_RW;
1460 mount_count = strtoul(optarg, &tmp, 0);
1461 if (*tmp || mount_count > 16000) {
1462 com_err(program_name, 0,
1463 _("bad mounts count - %s"),
1468 open_flag = EXT2_FLAG_RW;
1471 if (strcmp(optarg, "continue") == 0)
1472 errors = EXT2_ERRORS_CONTINUE;
1473 else if (strcmp(optarg, "remount-ro") == 0)
1474 errors = EXT2_ERRORS_RO;
1475 else if (strcmp(optarg, "panic") == 0)
1476 errors = EXT2_ERRORS_PANIC;
1478 com_err(program_name, 0,
1479 _("bad error behavior - %s"),
1484 open_flag = EXT2_FLAG_RW;
1487 extended_cmd = optarg;
1488 open_flag |= EXT2_FLAG_RW;
1490 case 'f': /* Force */
1494 resgid = strtoul(optarg, &tmp, 0);
1496 gr = getgrnam(optarg);
1500 resgid = gr->gr_gid;
1505 com_err(program_name, 0,
1506 _("bad gid/group name - %s"),
1511 open_flag = EXT2_FLAG_RW;
1514 interval = strtoul(optarg, &tmp, 0);
1521 case 'D': /* days */
1527 case 'M': /* months! */
1528 interval *= 86400 * 30;
1532 case 'W': /* weeks */
1533 interval *= 86400 * 7;
1538 com_err(program_name, 0,
1539 _("bad interval - %s"), optarg);
1543 open_flag = EXT2_FLAG_RW;
1548 open_flag = EXT2_FLAG_RW;
1551 parse_journal_opts(optarg);
1552 open_flag = EXT2_FLAG_RW;
1560 open_flag |= EXT2_FLAG_RW |
1561 EXT2_FLAG_JOURNAL_DEV_OK;
1564 reserved_ratio = strtod(optarg, &tmp);
1565 if (*tmp || reserved_ratio > 50 ||
1566 reserved_ratio < 0) {
1567 com_err(program_name, 0,
1568 _("bad reserved block ratio - %s"),
1573 open_flag = EXT2_FLAG_RW;
1576 new_last_mounted = optarg;
1578 open_flag = EXT2_FLAG_RW;
1582 com_err(program_name, 0, "%s",
1583 _("-o may only be specified once"));
1586 mntopts_cmd = optarg;
1587 open_flag = EXT2_FLAG_RW;
1591 com_err(program_name, 0, "%s",
1592 _("-O may only be specified once"));
1595 features_cmd = optarg;
1596 open_flag = EXT2_FLAG_RW;
1601 parse_quota_opts(optarg);
1602 open_flag = EXT2_FLAG_RW;
1606 reserved_blocks = strtoul(optarg, &tmp, 0);
1608 com_err(program_name, 0,
1609 _("bad reserved blocks count - %s"),
1614 open_flag = EXT2_FLAG_RW;
1616 case 's': /* Deprecated */
1617 s_flag = atoi(optarg);
1618 open_flag = EXT2_FLAG_RW;
1622 last_check_time = parse_time(optarg);
1623 open_flag = EXT2_FLAG_RW;
1626 resuid = strtoul(optarg, &tmp, 0);
1628 pw = getpwnam(optarg);
1632 resuid = pw->pw_uid;
1637 com_err(program_name, 0,
1638 _("bad uid/user name - %s"),
1643 open_flag = EXT2_FLAG_RW;
1648 open_flag = EXT2_FLAG_RW |
1649 EXT2_FLAG_JOURNAL_DEV_OK;
1652 new_inode_size = strtoul(optarg, &tmp, 0);
1654 com_err(program_name, 0,
1655 _("bad inode size - %s"),
1659 if (!((new_inode_size &
1660 (new_inode_size - 1)) == 0)) {
1661 com_err(program_name, 0,
1662 _("Inode size must be a "
1663 "power of two- %s"),
1667 open_flag = EXT2_FLAG_RW;
1673 if (optind < argc - 1 || optind == argc)
1675 if (!open_flag && !l_flag)
1677 io_options = strchr(argv[optind], '?');
1680 device_name = blkid_get_devname(NULL, argv[optind], NULL);
1682 com_err(program_name, 0, _("Unable to resolve '%s'"),
1688 #ifdef CONFIG_BUILD_FINDFS
1689 void do_findfs(int argc, char **argv)
1694 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1695 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1698 dev = blkid_get_devname(NULL, argv[1], NULL);
1700 com_err("findfs", 0, _("Unable to resolve '%s'"),
1709 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1711 char *buf, *token, *next, *p, *arg;
1716 buf = malloc(len+1);
1718 fprintf(stderr, "%s",
1719 _("Couldn't allocate memory to parse options!\n"));
1723 for (token = buf; token && *token; token = next) {
1724 p = strchr(token, ',');
1730 arg = strchr(token, '=');
1735 if (strcmp(token, "clear-mmp") == 0 ||
1736 strcmp(token, "clear_mmp") == 0) {
1738 } else if (strcmp(token, "mmp_update_interval") == 0) {
1744 intv = strtoul(arg, &p, 0);
1747 _("Invalid mmp_update_interval: %s\n"),
1753 intv = EXT4_MMP_UPDATE_INTERVAL;
1754 } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1756 _("mmp_update_interval too big: %lu\n"),
1761 printf(P_("Setting multiple mount protection update "
1762 "interval to %lu second\n",
1763 "Setting multiple mount protection update "
1764 "interval to %lu seconds\n", intv),
1766 fs->super->s_mmp_update_interval = intv;
1767 ext2fs_mark_super_dirty(fs);
1768 } else if (!strcmp(token, "test_fs")) {
1769 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1770 printf("Setting test filesystem flag\n");
1771 ext2fs_mark_super_dirty(fs);
1772 } else if (!strcmp(token, "^test_fs")) {
1773 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1774 printf("Clearing test filesystem flag\n");
1775 ext2fs_mark_super_dirty(fs);
1776 } else if (strcmp(token, "stride") == 0) {
1781 stride = strtoul(arg, &p, 0);
1784 _("Invalid RAID stride: %s\n"),
1790 } else if (strcmp(token, "stripe-width") == 0 ||
1791 strcmp(token, "stripe_width") == 0) {
1796 stripe_width = strtoul(arg, &p, 0);
1799 _("Invalid RAID stripe-width: %s\n"),
1804 stripe_width_set = 1;
1805 } else if (strcmp(token, "hash_alg") == 0 ||
1806 strcmp(token, "hash-alg") == 0) {
1811 hash_alg = e2p_string2hash(arg);
1814 _("Invalid hash algorithm: %s\n"),
1819 fs->super->s_def_hash_version = hash_alg;
1820 printf(_("Setting default hash algorithm "
1823 ext2fs_mark_super_dirty(fs);
1824 } else if (!strcmp(token, "mount_opts")) {
1829 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
1831 "Extended mount options too long\n");
1834 ext_mount_opts = strdup(arg);
1839 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
1840 "Extended options are separated by commas, "
1841 "and may take an argument which\n"
1842 "\tis set off by an equals ('=') sign.\n\n"
1843 "Valid extended options are:\n"
1845 "\thash_alg=<hash algorithm>\n"
1846 "\tmount_opts=<extended default mount options>\n"
1847 "\tstride=<RAID per-disk chunk size in blocks>\n"
1848 "\tstripe_width=<RAID stride*data disks in blocks>\n"
1860 * Fill in the block bitmap bmap with the information regarding the
1861 * blocks to be moved
1863 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
1864 ext2fs_block_bitmap bmap)
1868 ext2_badblocks_list bb_list = 0;
1869 blk64_t j, needed_blocks = 0;
1870 blk64_t start_blk, end_blk;
1872 retval = ext2fs_read_bb_inode(fs, &bb_list);
1876 for (i = 0; i < fs->group_desc_count; i++) {
1877 start_blk = ext2fs_inode_table_loc(fs, i) +
1878 fs->inode_blocks_per_group;
1880 end_blk = ext2fs_inode_table_loc(fs, i) +
1881 new_ino_blks_per_grp;
1883 for (j = start_blk; j < end_blk; j++) {
1884 if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
1886 * IF the block is a bad block we fail
1888 if (ext2fs_badblocks_list_test(bb_list, j)) {
1889 ext2fs_badblocks_list_free(bb_list);
1893 ext2fs_mark_block_bitmap2(bmap, j);
1896 * We are going to use this block for
1897 * inode table. So mark them used.
1899 ext2fs_mark_block_bitmap2(fs->block_map, j);
1902 needed_blocks += end_blk - start_blk;
1905 ext2fs_badblocks_list_free(bb_list);
1906 if (needed_blocks > ext2fs_free_blocks_count(fs->super))
1912 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
1915 group = ext2fs_group_of_blk2(fs, blk);
1916 if (ext2fs_block_bitmap_loc(fs, group) == blk)
1918 if (ext2fs_inode_bitmap_loc(fs, group) == blk)
1923 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
1925 blk64_t start_blk, end_blk;
1926 start_blk = fs->super->s_first_data_block +
1927 EXT2_GROUPS_TO_BLOCKS(fs->super, group);
1929 * We cannot get new block beyond end_blk for for the last block group
1930 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
1932 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
1933 if (blk >= start_blk && blk <= end_blk)
1938 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
1945 blk64_t blk, new_blk, goal;
1946 struct blk_move *bmv;
1948 retval = ext2fs_get_mem(fs->blocksize, &buf);
1952 for (new_blk = blk = fs->super->s_first_data_block;
1953 blk < ext2fs_blocks_count(fs->super); blk++) {
1954 if (!ext2fs_test_block_bitmap2(bmap, blk))
1957 if (ext2fs_is_meta_block(fs, blk)) {
1959 * If the block is mapping a fs meta data block
1960 * like group desc/block bitmap/inode bitmap. We
1961 * should find a block in the same group and fix
1962 * the respective fs metadata pointers. Otherwise
1965 group = ext2fs_group_of_blk2(fs, blk);
1966 goal = ext2fs_group_first_block2(fs, group);
1972 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
1976 /* new fs meta data block should be in the same group */
1977 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
1982 /* Mark this block as allocated */
1983 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
1985 /* Add it to block move list */
1986 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1991 bmv->new_loc = new_blk;
1993 list_add(&(bmv->list), &blk_move_list);
1995 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
1999 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2005 ext2fs_free_mem(&buf);
2009 static blk64_t translate_block(blk64_t blk)
2011 struct list_head *entry;
2012 struct blk_move *bmv;
2014 list_for_each(entry, &blk_move_list) {
2015 bmv = list_entry(entry, struct blk_move, list);
2016 if (bmv->old_loc == blk)
2017 return bmv->new_loc;
2023 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2025 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2026 blk64_t ref_block EXT2FS_ATTR((unused)),
2027 int ref_offset EXT2FS_ATTR((unused)),
2032 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2034 if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2036 new_blk = translate_block(*block_nr);
2038 *block_nr = new_blk;
2040 * This will force the ext2fs_write_inode in the iterator
2042 ret |= BLOCK_CHANGED;
2048 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2050 errcode_t retval = 0;
2053 char *block_buf = 0;
2054 struct ext2_inode inode;
2055 ext2_inode_scan scan = NULL;
2057 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2061 retval = ext2fs_open_inode_scan(fs, 0, &scan);
2066 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2073 if (inode.i_links_count == 0)
2074 continue; /* inode not in use */
2077 * If we end up modifying the journal inode
2078 * the sb->s_jnl_blocks will differ. But a
2079 * subsequent e2fsck fixes that.
2080 * Do we need to fix this ??
2083 if (ext2fs_file_acl_block(fs, &inode) &&
2084 ext2fs_test_block_bitmap2(bmap,
2085 ext2fs_file_acl_block(fs, &inode))) {
2086 blk = translate_block(ext2fs_file_acl_block(fs,
2091 ext2fs_file_acl_block_set(fs, &inode, blk);
2094 * Write the inode to disk so that inode table
2097 retval = ext2fs_write_inode(fs, ino, &inode);
2102 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2105 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2106 process_block, bmap);
2113 ext2fs_free_mem(&block_buf);
2119 * We need to scan for inode and block bitmaps that may need to be
2120 * moved. This can take place if the filesystem was formatted for
2121 * RAID arrays using the mke2fs's extended option "stride".
2123 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2126 blk64_t blk, new_blk;
2128 for (i = 0; i < fs->group_desc_count; i++) {
2129 blk = ext2fs_block_bitmap_loc(fs, i);
2130 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2131 new_blk = translate_block(blk);
2134 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2137 blk = ext2fs_inode_bitmap_loc(fs, i);
2138 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2139 new_blk = translate_block(blk);
2142 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2148 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2153 int new_ino_blks_per_grp;
2155 char *old_itable = NULL, *new_itable = NULL;
2156 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2157 unsigned long old_ino_size;
2158 int old_itable_size, new_itable_size;
2160 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2161 old_ino_size = EXT2_INODE_SIZE(fs->super);
2163 new_ino_blks_per_grp = ext2fs_div_ceil(
2164 EXT2_INODES_PER_GROUP(fs->super) *
2168 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2170 retval = ext2fs_get_mem(old_itable_size, &old_itable);
2174 retval = ext2fs_get_mem(new_itable_size, &new_itable);
2178 tmp_old_itable = old_itable;
2179 tmp_new_itable = new_itable;
2181 for (i = 0; i < fs->group_desc_count; i++) {
2182 blk = ext2fs_inode_table_loc(fs, i);
2183 retval = io_channel_read_blk64(fs->io, blk,
2184 fs->inode_blocks_per_group, old_itable);
2188 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2189 memcpy(new_itable, old_itable, old_ino_size);
2191 memset(new_itable+old_ino_size, 0,
2192 new_ino_size - old_ino_size);
2194 new_itable += new_ino_size;
2195 old_itable += old_ino_size;
2198 /* reset the pointer */
2199 old_itable = tmp_old_itable;
2200 new_itable = tmp_new_itable;
2202 retval = io_channel_write_blk64(fs->io, blk,
2203 new_ino_blks_per_grp, new_itable);
2208 /* Update the meta data */
2209 fs->inode_blocks_per_group = new_ino_blks_per_grp;
2210 fs->super->s_inode_size = new_ino_size;
2214 ext2fs_free_mem(&old_itable);
2217 ext2fs_free_mem(&new_itable);
2222 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2226 unsigned int group = 0;
2227 unsigned int count = 0;
2232 * First calculate the block statistics
2234 for (blk = fs->super->s_first_data_block;
2235 blk < ext2fs_blocks_count(fs->super); blk++) {
2236 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2241 if ((count == fs->super->s_blocks_per_group) ||
2242 (blk == ext2fs_blocks_count(fs->super)-1)) {
2243 ext2fs_bg_free_blocks_count_set(fs, group++,
2249 total_free = EXT2FS_C2B(fs, total_free);
2250 ext2fs_free_blocks_count_set(fs->super, total_free);
2253 * Next, calculate the inode statistics
2260 /* Protect loop from wrap-around if s_inodes_count maxed */
2261 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2262 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2267 if ((count == fs->super->s_inodes_per_group) ||
2268 (ino == fs->super->s_inodes_count)) {
2269 ext2fs_bg_free_inodes_count_set(fs, group++,
2275 fs->super->s_free_inodes_count = total_free;
2276 ext2fs_mark_super_dirty(fs);
2280 #define list_for_each_safe(pos, pnext, head) \
2281 for (pos = (head)->next, pnext = pos->next; pos != (head); \
2282 pos = pnext, pnext = pos->next)
2284 static void free_blk_move_list(void)
2286 struct list_head *entry, *tmp;
2287 struct blk_move *bmv;
2289 list_for_each_safe(entry, tmp, &blk_move_list) {
2290 bmv = list_entry(entry, struct blk_move, list);
2292 ext2fs_free_mem(&bmv);
2297 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2300 int new_ino_blks_per_grp;
2301 ext2fs_block_bitmap bmap;
2303 retval = ext2fs_read_inode_bitmap(fs);
2305 fputs(_("Failed to read inode bitmap\n"), stderr);
2308 retval = ext2fs_read_block_bitmap(fs);
2310 fputs(_("Failed to read block bitmap\n"), stderr);
2313 INIT_LIST_HEAD(&blk_move_list);
2316 new_ino_blks_per_grp = ext2fs_div_ceil(
2317 EXT2_INODES_PER_GROUP(fs->super)*
2321 /* We may change the file system.
2322 * Mark the file system as invalid so that
2323 * the user is prompted to run fsck.
2325 fs->super->s_state &= ~EXT2_VALID_FS;
2327 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2330 fputs(_("Failed to allocate block bitmap when "
2331 "increasing inode size\n"), stderr);
2334 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2336 fputs(_("Not enough space to increase inode size \n"), stderr);
2339 retval = move_block(fs, bmap);
2341 fputs(_("Failed to relocate blocks during inode resize \n"),
2345 retval = inode_scan_and_fix(fs, bmap);
2349 retval = group_desc_scan_and_fix(fs, bmap);
2353 retval = expand_inode_table(fs, new_size);
2357 ext2fs_calculate_summary_stats(fs);
2359 fs->super->s_state |= EXT2_VALID_FS;
2360 /* mark super block and block bitmap as dirty */
2361 ext2fs_mark_super_dirty(fs);
2362 ext2fs_mark_bb_dirty(fs);
2365 free_blk_move_list();
2366 ext2fs_free_block_bitmap(bmap);
2371 free_blk_move_list();
2372 ext2fs_free_block_bitmap(bmap);
2373 fputs(_("Error in resizing the inode size.\n"
2374 "Run e2undo to undo the "
2375 "file system changes. \n"), stderr);
2380 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2382 errcode_t retval = 0;
2383 const char *tdb_dir;
2385 char *dev_name, *tmp_name;
2389 * Configuration via a conf file would be
2392 profile_get_string(profile, "scratch_files",
2396 tmp_name = strdup(name);
2399 com_err(program_name, ENOMEM, "%s",
2400 _("Couldn't allocate memory for tdb filename\n"));
2403 dev_name = basename(tmp_name);
2405 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2407 tdb_dir = "/var/lib/e2fsprogs";
2409 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2410 access(tdb_dir, W_OK))
2413 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2416 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2418 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2420 com_err(program_name, retval,
2421 _("while trying to delete %s"), tdb_file);
2426 set_undo_io_backing_manager(*io_ptr);
2427 *io_ptr = undo_io_manager;
2428 set_undo_io_backup_file(tdb_file);
2429 printf(_("To undo the tune2fs operation please run "
2430 "the command\n e2undo %s %s\n\n"),
2438 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2440 int retval, nr_users, start;
2441 journal_superblock_t *jsb;
2445 char uuid[UUID_STR_SIZE];
2446 char buf[SUPERBLOCK_SIZE];
2448 if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) ||
2449 uuid_is_null(sb->s_journal_uuid))
2452 uuid_unparse(sb->s_journal_uuid, uuid);
2453 journal_path = blkid_get_devname(NULL, "UUID", uuid);
2457 retval = ext2fs_open2(journal_path, io_options,
2458 EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2459 0, 0, unix_io_manager, &jfs);
2461 com_err(program_name, retval,
2462 _("while trying to open %s"),
2467 retval = get_journal_sb(jfs, buf);
2469 if (retval == EXT2_ET_UNSUPP_FEATURE)
2470 fprintf(stderr, _("%s is not a journal device.\n"),
2475 jsb = (journal_superblock_t *) buf;
2476 /* Find the filesystem UUID */
2477 nr_users = ntohl(jsb->s_nr_users);
2479 j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2480 if (j_uuid == NULL) {
2481 fputs(_("Filesystem's UUID not found on journal device.\n"),
2483 return EXT2_ET_LOAD_EXT_JOURNAL;
2486 memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2488 start = ext2fs_journal_sb_start(jfs->blocksize);
2489 /* Write back the journal superblock */
2490 retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2492 com_err(program_name, retval,
2493 "while writing journal superblock.");
2502 int main(int argc, char **argv)
2506 struct ext2_super_block *sb;
2507 io_manager io_ptr, io_ptr_orig = NULL;
2511 setlocale(LC_MESSAGES, "");
2512 setlocale(LC_CTYPE, "");
2513 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2514 textdomain(NLS_CAT_NAME);
2515 set_com_err_gettext(gettext);
2518 program_name = *argv;
2519 add_error_table(&et_ext2_error_table);
2521 #ifdef CONFIG_BUILD_FINDFS
2522 if (strcmp(get_progname(argv[0]), "findfs") == 0)
2523 do_findfs(argc, argv);
2525 if (strcmp(get_progname(argv[0]), "e2label") == 0)
2526 parse_e2label_options(argc, argv);
2528 parse_tune2fs_options(argc, argv);
2530 #ifdef CONFIG_TESTIO_DEBUG
2531 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2532 io_ptr = test_io_manager;
2533 test_io_backing_manager = unix_io_manager;
2536 io_ptr = unix_io_manager;
2539 if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2540 open_flag |= EXT2_FLAG_SKIP_MMP;
2542 open_flag |= EXT2_FLAG_64BITS;
2544 /* keep the filesystem struct around to dump MMP data */
2545 open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2547 retval = ext2fs_open2(device_name, io_options, open_flag,
2550 com_err(program_name, retval,
2551 _("while trying to open %s"),
2553 if (retval == EXT2_ET_MMP_FSCK_ON ||
2554 retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2555 dump_mmp_msg(fs->mmp_buf,
2556 _("If you are sure the filesystem "
2557 "is not in use on any node, run:\n"
2558 "'tune2fs -f -E clear_mmp {device}'\n"));
2559 else if (retval == EXT2_ET_MMP_FAILED)
2560 dump_mmp_msg(fs->mmp_buf, NULL);
2561 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2563 _("MMP block magic is bad. Try to fix it by "
2564 "running:\n'e2fsck -f %s'\n"), device_name);
2565 else if (retval != EXT2_ET_MMP_FAILED)
2566 fprintf(stderr, "%s",
2567 _("Couldn't find valid filesystem superblock.\n"));
2572 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2574 if (I_flag && !io_ptr_orig) {
2576 * Check the inode size is right so we can issue an
2577 * error message and bail before setting up the tdb
2580 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2581 fprintf(stderr, _("The inode size is already %lu\n"),
2586 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2587 fprintf(stderr, "%s",
2588 _("Shrinking inode size is not supported\n"));
2592 if (new_inode_size > fs->blocksize) {
2593 fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2594 new_inode_size, fs->blocksize);
2600 * If inode resize is requested use the
2603 io_ptr_orig = io_ptr;
2604 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2609 if (io_ptr != io_ptr_orig) {
2610 ext2fs_close_free(&fs);
2616 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2619 /* For e2label emulation */
2620 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
2622 remove_error_table(&et_ext2_error_table);
2626 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2628 com_err("ext2fs_check_if_mount", retval,
2629 _("while determining whether %s is mounted."),
2634 /* Normally we only need to write out the superblock */
2635 fs->flags |= EXT2_FLAG_SUPER_ONLY;
2638 sb->s_max_mnt_count = max_mount_count;
2639 ext2fs_mark_super_dirty(fs);
2640 printf(_("Setting maximal mount count to %d\n"),
2644 sb->s_mnt_count = mount_count;
2645 ext2fs_mark_super_dirty(fs);
2646 printf(_("Setting current mount count to %d\n"), mount_count);
2649 sb->s_errors = errors;
2650 ext2fs_mark_super_dirty(fs);
2651 printf(_("Setting error behavior to %d\n"), errors);
2654 sb->s_def_resgid = resgid;
2655 ext2fs_mark_super_dirty(fs);
2656 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
2659 if ((unsigned long long)interval >= (1ULL << 32)) {
2660 com_err(program_name, 0,
2661 _("interval between checks is too big (%lu)"),
2666 sb->s_checkinterval = interval;
2667 ext2fs_mark_super_dirty(fs);
2668 printf(_("Setting interval between checks to %lu seconds\n"),
2672 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2673 ext2fs_blocks_count(sb) / 100.0);
2674 ext2fs_mark_super_dirty(fs);
2675 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2676 reserved_ratio, ext2fs_r_blocks_count(sb));
2679 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2680 com_err(program_name, 0,
2681 _("reserved blocks count is too big (%llu)"),
2686 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2687 ext2fs_mark_super_dirty(fs);
2688 printf(_("Setting reserved blocks count to %llu\n"),
2692 if (sb->s_feature_ro_compat &
2693 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) {
2694 fputs(_("\nThe filesystem already has sparse "
2695 "superblocks.\n"), stderr);
2696 } else if (sb->s_feature_incompat &
2697 EXT2_FEATURE_INCOMPAT_META_BG) {
2698 fputs(_("\nSetting the sparse superblock flag not "
2699 "supported\nfor filesystems with "
2700 "the meta_bg feature enabled.\n"),
2705 sb->s_feature_ro_compat |=
2706 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
2707 sb->s_state &= ~EXT2_VALID_FS;
2708 ext2fs_mark_super_dirty(fs);
2709 printf(_("\nSparse superblock flag set. %s"),
2714 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
2720 sb->s_lastcheck = last_check_time;
2721 ext2fs_mark_super_dirty(fs);
2722 printf(_("Setting time filesystem last checked to %s\n"),
2723 ctime(&last_check_time));
2726 sb->s_def_resuid = resuid;
2727 ext2fs_mark_super_dirty(fs);
2728 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2731 if (strlen(new_label) > sizeof(sb->s_volume_name))
2732 fputs(_("Warning: label too long, truncating.\n"),
2734 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2735 strncpy(sb->s_volume_name, new_label,
2736 sizeof(sb->s_volume_name));
2737 ext2fs_mark_super_dirty(fs);
2740 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
2741 strncpy(sb->s_last_mounted, new_last_mounted,
2742 sizeof(sb->s_last_mounted));
2743 ext2fs_mark_super_dirty(fs);
2746 rc = update_mntopts(fs, mntopts_cmd);
2751 rc = update_feature_set(fs, features_cmd);
2756 rc = parse_extended_opts(fs, extended_cmd);
2759 if (clear_mmp && !f_flag) {
2760 fputs(_("Error in using clear_mmp. "
2761 "It must be used with -f\n"),
2767 rc = ext2fs_mmp_clear(fs);
2770 if (journal_size || journal_device) {
2771 rc = add_journal(fs);
2777 if (mount_flags & EXT2_MF_MOUNTED) {
2778 fputs(_("The quota feature may only be changed when "
2779 "the filesystem is unmounted.\n"), stderr);
2783 handle_quota_options(fs);
2789 char buf[SUPERBLOCK_SIZE];
2790 __u8 old_uuid[UUID_SIZE];
2792 if (ext2fs_has_group_desc_csum(fs)) {
2794 * Changing the UUID requires rewriting all metadata,
2795 * which can race with a mounted fs. Don't allow that.
2797 if (mount_flags & EXT2_MF_MOUNTED) {
2798 fputs(_("The UUID may only be "
2799 "changed when the filesystem is "
2800 "unmounted.\n"), stderr);
2803 if (check_fsck_needed(fs))
2807 * Determine if the block group checksums are
2808 * correct so we know whether or not to set
2811 for (i = 0; i < fs->group_desc_count; i++)
2812 if (!ext2fs_group_desc_csum_verify(fs, i))
2814 if (i >= fs->group_desc_count)
2818 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
2819 if ((strcasecmp(new_UUID, "null") == 0) ||
2820 (strcasecmp(new_UUID, "clear") == 0)) {
2821 uuid_clear(sb->s_uuid);
2822 } else if (strcasecmp(new_UUID, "time") == 0) {
2823 uuid_generate_time(sb->s_uuid);
2824 } else if (strcasecmp(new_UUID, "random") == 0) {
2825 uuid_generate(sb->s_uuid);
2826 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
2827 com_err(program_name, 0, "%s",
2828 _("Invalid UUID format\n"));
2832 ext2fs_init_csum_seed(fs);
2834 for (i = 0; i < fs->group_desc_count; i++)
2835 ext2fs_group_desc_csum_set(fs, i);
2836 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2839 /* If this is a journal dev, we need to copy UUID into jsb */
2840 if (!(rc = get_journal_sb(fs, buf))) {
2841 journal_superblock_t *jsb;
2843 jsb = (journal_superblock_t *) buf;
2844 fputs(_("Need to update journal superblock.\n"), stdout);
2845 memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
2847 /* Writeback the journal superblock */
2848 if ((rc = io_channel_write_blk64(fs->io,
2849 ext2fs_journal_sb_start(fs->blocksize),
2850 -SUPERBLOCK_SIZE, buf)))
2852 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
2855 rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
2857 if ((rc = fs_update_journal_user(sb, old_uuid)))
2861 ext2fs_mark_super_dirty(fs);
2862 if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
2863 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
2864 rewrite_checksums = 1;
2866 if (rewrite_checksums)
2867 rewrite_metadata_checksums(fs);
2869 if (mount_flags & EXT2_MF_MOUNTED) {
2870 fputs(_("The inode size may only be "
2871 "changed when the filesystem is "
2872 "unmounted.\n"), stderr);
2876 if (fs->super->s_feature_incompat &
2877 EXT4_FEATURE_INCOMPAT_FLEX_BG) {
2878 fputs(_("Changing the inode size not supported for "
2879 "filesystems with the flex_bg\n"
2880 "feature enabled.\n"),
2886 * We want to update group descriptor also
2887 * with the new free inode count
2889 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2890 if (resize_inode(fs, new_inode_size) == 0) {
2891 printf(_("Setting inode size %lu\n"),
2894 printf("%s", _("Failed to change inode size\n"));
2903 sb->s_raid_stride = stride;
2904 ext2fs_mark_super_dirty(fs);
2905 printf(_("Setting stride size to %d\n"), stride);
2907 if (stripe_width_set) {
2908 sb->s_raid_stripe_width = stripe_width;
2909 ext2fs_mark_super_dirty(fs);
2910 printf(_("Setting stripe width to %d\n"), stripe_width);
2912 if (ext_mount_opts) {
2913 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
2914 sizeof(fs->super->s_mount_opts));
2915 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
2916 ext2fs_mark_super_dirty(fs);
2917 printf(_("Setting extended default mount options to '%s'\n"),
2919 free(ext_mount_opts);
2922 remove_error_table(&et_ext2_error_table);
2926 ext2fs_mmp_stop(fs);
2930 return (ext2fs_close_free(&fs) ? 1 : 0);