* any later version.
*/
+#include "config.h"
#ifdef HAVE_SYS_MOUNT_H
+#include <sys/param.h>
#include <sys/mount.h>
#define MNT_FL (MS_MGC_VAL | MS_RDONLY)
#endif
#include "problem.h"
#include "uuid/uuid.h"
-#ifdef JFS_DEBUG
+#ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jfs-debug */
static int bh_count = 0;
-int journal_enable_debug = 0;
#endif
+/*
+ * Define USE_INODE_IO to use the inode_io.c / fileio.c codepaths.
+ * This creates a larger static binary, and a smaller binary using
+ * shared libraries. It's also probably slightly less CPU-efficient,
+ * which is why it's not on by default. But, it's a good way of
+ * testing the functions in inode_io.c and fileio.c.
+ */
+#undef USE_INODE_IO
+
+/* Checksumming functions */
+static int e2fsck_journal_verify_csum_type(journal_t *j,
+ journal_superblock_t *jsb)
+{
+ if (!journal_has_csum_v2or3(j))
+ return 1;
+
+ return jsb->s_checksum_type == JBD2_CRC32C_CHKSUM;
+}
+
+static __u32 e2fsck_journal_sb_csum(journal_superblock_t *jsb)
+{
+ __u32 crc, old_crc;
+
+ old_crc = jsb->s_checksum;
+ jsb->s_checksum = 0;
+ crc = ext2fs_crc32c_le(~0, (unsigned char *)jsb,
+ sizeof(journal_superblock_t));
+ jsb->s_checksum = old_crc;
+
+ return crc;
+}
+
+static int e2fsck_journal_sb_csum_verify(journal_t *j,
+ journal_superblock_t *jsb)
+{
+ __u32 provided, calculated;
+
+ if (!journal_has_csum_v2or3(j))
+ return 1;
+
+ provided = ext2fs_be32_to_cpu(jsb->s_checksum);
+ calculated = e2fsck_journal_sb_csum(jsb);
+
+ return provided == calculated;
+}
+
+static errcode_t e2fsck_journal_sb_csum_set(journal_t *j,
+ journal_superblock_t *jsb)
+{
+ __u32 crc;
+
+ if (!journal_has_csum_v2or3(j))
+ return 0;
+
+ crc = e2fsck_journal_sb_csum(jsb);
+ jsb->s_checksum = ext2fs_cpu_to_be32(crc);
+ return 0;
+}
+
/* Kernel compatibility functions for handling the journal. These allow us
* to use the recovery.c file virtually unchanged from the kernel, so we
* don't have to do much to keep kernel and user recovery in sync.
*/
-int bmap(struct inode *inode, int block)
+int journal_bmap(journal_t *journal, blk64_t block, unsigned long long *phys)
{
- int retval;
- blk_t phys;
-
- retval = ext2fs_bmap(inode->i_ctx->fs, inode->i_ino, &inode->i_ext2,
- NULL, 0, block, &phys);
+#ifdef USE_INODE_IO
+ *phys = block;
+ return 0;
+#else
+ struct inode *inode = journal->j_inode;
+ errcode_t retval;
+ blk64_t pblk;
- if (retval)
- com_err(inode->i_ctx->device_name, retval,
- _("bmap journal inode %ld, block %d\n"),
- inode->i_ino, block);
+ if (!inode) {
+ *phys = block;
+ return 0;
+ }
- return phys;
+ retval= ext2fs_bmap2(inode->i_ctx->fs, inode->i_ino,
+ &inode->i_ext2, NULL, 0, block, 0, &pblk);
+ *phys = pblk;
+ return -1 * ((int) retval);
+#endif
}
-struct buffer_head *getblk(e2fsck_t ctx, blk_t blocknr, int blocksize)
+struct buffer_head *getblk(kdev_t kdev, blk64_t blocknr, int blocksize)
{
struct buffer_head *bh;
+ int bufsize = sizeof(*bh) + kdev->k_ctx->fs->blocksize -
+ sizeof(bh->b_data);
- bh = e2fsck_allocate_memory(ctx, sizeof(*bh), "block buffer");
+ bh = e2fsck_allocate_memory(kdev->k_ctx, bufsize, "block buffer");
if (!bh)
return NULL;
- jfs_debug(4, "getblk for block %lu (%d bytes)(total %d)\n",
- (unsigned long) blocknr, blocksize, ++bh_count);
-
- bh->b_ctx = ctx;
+#ifdef CONFIG_JBD_DEBUG
+ if (journal_enable_debug >= 3)
+ bh_count++;
+#endif
+ jfs_debug(4, "getblk for block %llu (%d bytes)(total %d)\n",
+ (unsigned long long) blocknr, blocksize, bh_count);
+
+ bh->b_ctx = kdev->k_ctx;
+ if (kdev->k_dev == K_DEV_FS)
+ bh->b_io = kdev->k_ctx->fs->io;
+ else
+ bh->b_io = kdev->k_ctx->journal_io;
bh->b_size = blocksize;
bh->b_blocknr = blocknr;
return bh;
}
+int sync_blockdev(kdev_t kdev)
+{
+ io_channel io;
+
+ if (kdev->k_dev == K_DEV_FS)
+ io = kdev->k_ctx->fs->io;
+ else
+ io = kdev->k_ctx->journal_io;
+
+ return io_channel_flush(io) ? -EIO : 0;
+}
+
void ll_rw_block(int rw, int nr, struct buffer_head *bhp[])
{
- int retval;
+ errcode_t retval;
struct buffer_head *bh;
for (; nr > 0; --nr) {
bh = *bhp++;
if (rw == READ && !bh->b_uptodate) {
- jfs_debug(3, "reading block %lu/%p\n",
- (unsigned long) bh->b_blocknr, (void *) bh);
- retval = io_channel_read_blk(bh->b_ctx->fs->io,
+ jfs_debug(3, "reading block %llu/%p\n",
+ bh->b_blocknr, (void *) bh);
+ retval = io_channel_read_blk64(bh->b_io,
bh->b_blocknr,
1, bh->b_data);
if (retval) {
com_err(bh->b_ctx->device_name, retval,
- "while reading block %ld\n",
+ "while reading block %llu\n",
bh->b_blocknr);
- bh->b_err = retval;
+ bh->b_err = (int) retval;
continue;
}
bh->b_uptodate = 1;
} else if (rw == WRITE && bh->b_dirty) {
- jfs_debug(3, "writing block %lu/%p\n",
- (unsigned long) bh->b_blocknr, (void *) bh);
- retval = io_channel_write_blk(bh->b_ctx->fs->io,
+ jfs_debug(3, "writing block %llu/%p\n",
+ bh->b_blocknr,
+ (void *) bh);
+ retval = io_channel_write_blk64(bh->b_io,
bh->b_blocknr,
1, bh->b_data);
if (retval) {
com_err(bh->b_ctx->device_name, retval,
- "while writing block %ld\n",
+ "while writing block %llu\n",
bh->b_blocknr);
- bh->b_err = retval;
+ bh->b_err = (int) retval;
continue;
}
bh->b_dirty = 0;
bh->b_uptodate = 1;
- } else
- jfs_debug(3, "no-op %s for block %lu\n",
- rw == READ ? "read" : "write",
- (unsigned long) bh->b_blocknr);
+ } else {
+ jfs_debug(3, "no-op %s for block %llu\n",
+ rw == READ ? "read" : "write",
+ bh->b_blocknr);
+ }
}
}
-void mark_buffer_dirty(struct buffer_head *bh, int dummy)
+void mark_buffer_dirty(struct buffer_head *bh)
{
- bh->b_dirty = dummy | 1; /* use dummy to avoid unused variable */
+ bh->b_dirty = 1;
}
static void mark_buffer_clean(struct buffer_head * bh)
{
if (bh->b_dirty)
ll_rw_block(WRITE, 1, &bh);
- jfs_debug(3, "freeing block %lu/%p (total %d)\n",
- (unsigned long) bh->b_blocknr, (void *) bh, --bh_count);
- ext2fs_free_mem((void **) &bh);
+ jfs_debug(3, "freeing block %llu/%p (total %d)\n",
+ bh->b_blocknr, (void *) bh, --bh_count);
+ ext2fs_free_mem(&bh);
}
int buffer_uptodate(struct buffer_head *bh)
return bh->b_uptodate;
}
+void mark_buffer_uptodate(struct buffer_head *bh, int val)
+{
+ bh->b_uptodate = val;
+}
+
void wait_on_buffer(struct buffer_head *bh)
{
if (!bh->b_uptodate)
static void e2fsck_clear_recover(e2fsck_t ctx, int error)
{
- ctx->fs->super->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER;
+ ext2fs_clear_feature_journal_needs_recovery(ctx->fs->super);
/* if we had an error doing journal recovery, we need a full fsck */
if (error)
ext2fs_mark_super_dirty(ctx->fs);
}
-static errcode_t e2fsck_journal_init_inode(e2fsck_t ctx,
- struct ext2_super_block *s,
- ext2_ino_t journal_inum,
- journal_t **journal)
+/*
+ * This is a helper function to check the validity of the journal.
+ */
+struct process_block_struct {
+ e2_blkcnt_t last_block;
+};
+
+static int process_journal_block(ext2_filsys fs,
+ blk64_t *block_nr,
+ e2_blkcnt_t blockcnt,
+ blk64_t ref_block EXT2FS_ATTR((unused)),
+ int ref_offset EXT2FS_ATTR((unused)),
+ void *priv_data)
{
- struct inode *inode;
- struct buffer_head *bh;
- blk_t start;
- int retval;
+ struct process_block_struct *p;
+ blk64_t blk = *block_nr;
+
+ p = (struct process_block_struct *) priv_data;
+
+ if (!blk || blk < fs->super->s_first_data_block ||
+ blk >= ext2fs_blocks_count(fs->super))
+ return BLOCK_ABORT;
+
+ if (blockcnt >= 0)
+ p->last_block = blockcnt;
+ return 0;
+}
- jfs_debug(1, "Using journal inode %u\n", journal_inum);
- *journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal");
- if (!*journal) {
+static errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **ret_journal)
+{
+ struct process_block_struct pb;
+ struct ext2_super_block *sb = ctx->fs->super;
+ struct ext2_super_block jsuper;
+ struct problem_context pctx;
+ struct buffer_head *bh;
+ struct inode *j_inode = NULL;
+ struct kdev_s *dev_fs = NULL, *dev_journal;
+ const char *journal_name = 0;
+ journal_t *journal = NULL;
+ errcode_t retval = 0;
+ io_manager io_ptr = 0;
+ unsigned long long start = 0;
+ int ret;
+ int ext_journal = 0;
+ int tried_backup_jnl = 0;
+
+ clear_problem_context(&pctx);
+
+ journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal");
+ if (!journal) {
return EXT2_ET_NO_MEMORY;
}
- inode = e2fsck_allocate_memory(ctx, sizeof(*inode), "journal inode");
- if (!inode) {
+ dev_fs = e2fsck_allocate_memory(ctx, 2*sizeof(struct kdev_s), "kdev");
+ if (!dev_fs) {
retval = EXT2_ET_NO_MEMORY;
- goto exit_journal;
+ goto errout;
}
+ dev_journal = dev_fs+1;
- inode->i_ctx = ctx;
- inode->i_ino = journal_inum;
- retval = ext2fs_read_inode(ctx->fs, journal_inum, &inode->i_ext2);
- if (retval)
- goto exit_inode;
-
- (*journal)->j_dev = ctx;
- (*journal)->j_inode = inode;
- (*journal)->j_blocksize = ctx->fs->blocksize;
- (*journal)->j_maxlen = inode->i_ext2.i_size / (*journal)->j_blocksize;
-
- if (!inode->i_ext2.i_links_count ||
- !LINUX_S_ISREG(inode->i_ext2.i_mode) ||
- (*journal)->j_maxlen < JFS_MIN_JOURNAL_BLOCKS ||
- (start = bmap(inode, 0)) == 0) {
- retval = EXT2_ET_BAD_INODE_NUM;
- goto exit_inode;
- }
+ dev_fs->k_ctx = dev_journal->k_ctx = ctx;
+ dev_fs->k_dev = K_DEV_FS;
+ dev_journal->k_dev = K_DEV_JOURNAL;
- bh = getblk(ctx, start, (*journal)->j_blocksize);
- if (!bh) {
- retval = EXT2_ET_NO_MEMORY;
- goto exit_inode;
- }
- (*journal)->j_sb_buffer = bh;
- (*journal)->j_superblock = (journal_superblock_t *)bh->b_data;
+ journal->j_dev = dev_journal;
+ journal->j_fs_dev = dev_fs;
+ journal->j_inode = NULL;
+ journal->j_blocksize = ctx->fs->blocksize;
- return 0;
+ if (uuid_is_null(sb->s_journal_uuid)) {
+ if (!sb->s_journal_inum) {
+ retval = EXT2_ET_BAD_INODE_NUM;
+ goto errout;
+ }
+ j_inode = e2fsck_allocate_memory(ctx, sizeof(*j_inode),
+ "journal inode");
+ if (!j_inode) {
+ retval = EXT2_ET_NO_MEMORY;
+ goto errout;
+ }
+
+ j_inode->i_ctx = ctx;
+ j_inode->i_ino = sb->s_journal_inum;
+
+ if ((retval = ext2fs_read_inode(ctx->fs,
+ sb->s_journal_inum,
+ &j_inode->i_ext2))) {
+ try_backup_journal:
+ if (sb->s_jnl_backup_type != EXT3_JNL_BACKUP_BLOCKS ||
+ tried_backup_jnl)
+ goto errout;
+ memset(&j_inode->i_ext2, 0, sizeof(struct ext2_inode));
+ memcpy(&j_inode->i_ext2.i_block[0], sb->s_jnl_blocks,
+ EXT2_N_BLOCKS*4);
+ j_inode->i_ext2.i_size_high = sb->s_jnl_blocks[15];
+ j_inode->i_ext2.i_size = sb->s_jnl_blocks[16];
+ j_inode->i_ext2.i_links_count = 1;
+ j_inode->i_ext2.i_mode = LINUX_S_IFREG | 0600;
+ e2fsck_use_inode_shortcuts(ctx, 1);
+ ctx->stashed_ino = j_inode->i_ino;
+ ctx->stashed_inode = &j_inode->i_ext2;
+ tried_backup_jnl++;
+ }
+ if (!j_inode->i_ext2.i_links_count ||
+ !LINUX_S_ISREG(j_inode->i_ext2.i_mode)) {
+ retval = EXT2_ET_NO_JOURNAL;
+ goto try_backup_journal;
+ }
+ if (EXT2_I_SIZE(&j_inode->i_ext2) / journal->j_blocksize <
+ JFS_MIN_JOURNAL_BLOCKS) {
+ retval = EXT2_ET_JOURNAL_TOO_SMALL;
+ goto try_backup_journal;
+ }
+ pb.last_block = -1;
+ retval = ext2fs_block_iterate3(ctx->fs, j_inode->i_ino,
+ BLOCK_FLAG_HOLE, 0,
+ process_journal_block, &pb);
+ if ((pb.last_block + 1) * ctx->fs->blocksize <
+ (int) EXT2_I_SIZE(&j_inode->i_ext2)) {
+ retval = EXT2_ET_JOURNAL_TOO_SMALL;
+ goto try_backup_journal;
+ }
+ if (tried_backup_jnl && !(ctx->options & E2F_OPT_READONLY)) {
+ retval = ext2fs_write_inode(ctx->fs, sb->s_journal_inum,
+ &j_inode->i_ext2);
+ if (retval)
+ goto errout;
+ }
-exit_inode:
- ext2fs_free_mem((void **)&inode);
-exit_journal:
- ext2fs_free_mem((void **)journal);
+ journal->j_maxlen = EXT2_I_SIZE(&j_inode->i_ext2) /
+ journal->j_blocksize;
+
+#ifdef USE_INODE_IO
+ retval = ext2fs_inode_io_intern2(ctx->fs, sb->s_journal_inum,
+ &j_inode->i_ext2,
+ &journal_name);
+ if (retval)
+ goto errout;
+
+ io_ptr = inode_io_manager;
+#else
+ journal->j_inode = j_inode;
+ ctx->journal_io = ctx->fs->io;
+ if ((ret = journal_bmap(journal, 0, &start)) != 0) {
+ retval = (errcode_t) (-1 * ret);
+ goto errout;
+ }
+#endif
+ } else {
+ ext_journal = 1;
+ if (!ctx->journal_name) {
+ char uuid[37];
+
+ uuid_unparse(sb->s_journal_uuid, uuid);
+ ctx->journal_name = blkid_get_devname(ctx->blkid,
+ "UUID", uuid);
+ if (!ctx->journal_name)
+ ctx->journal_name = blkid_devno_to_devname(sb->s_journal_dev);
+ }
+ journal_name = ctx->journal_name;
- return retval;
-}
+ if (!journal_name) {
+ fix_problem(ctx, PR_0_CANT_FIND_JOURNAL, &pctx);
+ retval = EXT2_ET_LOAD_EXT_JOURNAL;
+ goto errout;
+ }
-static errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **journal)
-{
- char uuid_str[40];
- struct problem_context pctx;
- struct ext2_super_block *sb = ctx->fs->super;
+ jfs_debug(1, "Using journal file %s\n", journal_name);
+ io_ptr = unix_io_manager;
+ }
- clear_problem_context(&pctx);
+#if 0
+ test_io_backing_manager = io_ptr;
+ io_ptr = test_io_manager;
+#endif
+#ifndef USE_INODE_IO
+ if (ext_journal)
+#endif
+ {
+ int flags = IO_FLAG_RW;
+ if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
+ ctx->mount_flags & EXT2_MF_READONLY))
+ flags |= IO_FLAG_EXCLUSIVE;
+ if ((ctx->mount_flags & EXT2_MF_READONLY) &&
+ (ctx->options & E2F_OPT_FORCE))
+ flags &= ~IO_FLAG_EXCLUSIVE;
+
+
+ retval = io_ptr->open(journal_name, flags,
+ &ctx->journal_io);
+ }
+ if (retval)
+ goto errout;
- if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
- /* FIXME: check if dev is valid block dev, has a journal */
- if (sb->s_journal_dev) {
- pctx.num = sb->s_journal_dev;
- /* this problem aborts on -y, -p, unsupported on -n */
- if (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_DEV, &pctx))
- return EXT2_ET_UNSUPP_FEATURE;
- sb->s_journal_dev = 0;
- sb->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(ctx->fs);
+ io_channel_set_blksize(ctx->journal_io, ctx->fs->blocksize);
+
+ if (ext_journal) {
+ blk64_t maxlen;
+
+ start = ext2fs_journal_sb_start(ctx->fs->blocksize) - 1;
+ bh = getblk(dev_journal, start, ctx->fs->blocksize);
+ if (!bh) {
+ retval = EXT2_ET_NO_MEMORY;
+ goto errout;
}
- /* FIXME: check if UUID is valid block dev, has a journal */
- if (!uuid_is_null(sb->s_journal_uuid)) {
- uuid_unparse(sb->s_journal_uuid, uuid_str);
- pctx.str = uuid_str;
- /* this problem aborts on -y, -p, unsupported on -n */
- if (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_UUID, &pctx))
- return EXT2_ET_UNSUPP_FEATURE;
- uuid_clear(sb->s_journal_uuid);
- sb->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(ctx->fs);
+ ll_rw_block(READ, 1, &bh);
+ if ((retval = bh->b_err) != 0) {
+ brelse(bh);
+ goto errout;
+ }
+ memcpy(&jsuper, start ? bh->b_data : bh->b_data + SUPERBLOCK_OFFSET,
+ sizeof(jsuper));
+#ifdef WORDS_BIGENDIAN
+ if (jsuper.s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC))
+ ext2fs_swap_super(&jsuper);
+#endif
+ if (jsuper.s_magic != EXT2_SUPER_MAGIC ||
+ !ext2fs_has_feature_journal_dev(&jsuper)) {
+ fix_problem(ctx, PR_0_EXT_JOURNAL_BAD_SUPER, &pctx);
+ retval = EXT2_ET_LOAD_EXT_JOURNAL;
+ brelse(bh);
+ goto errout;
+ }
+ /* Make sure the journal UUID is correct */
+ if (memcmp(jsuper.s_uuid, ctx->fs->super->s_journal_uuid,
+ sizeof(jsuper.s_uuid))) {
+ fix_problem(ctx, PR_0_JOURNAL_BAD_UUID, &pctx);
+ retval = EXT2_ET_LOAD_EXT_JOURNAL;
+ brelse(bh);
+ goto errout;
}
- if (!sb->s_journal_inum)
- return EXT2_ET_BAD_INODE_NUM;
- }
- if (sb->s_journal_dev) {
- pctx.num = sb->s_journal_dev;
- if (!fix_problem(ctx, PR_0_JOURNAL_BAD_DEV, &pctx))
- return EXT2_ET_UNSUPP_FEATURE;
- sb->s_journal_dev = 0;
- sb->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(ctx->fs);
+ /* Check the superblock checksum */
+ if (ext2fs_has_feature_metadata_csum(&jsuper)) {
+ struct struct_ext2_filsys fsx;
+ struct ext2_super_block superx;
+ void *p;
+
+ p = start ? bh->b_data : bh->b_data + SUPERBLOCK_OFFSET;
+ memcpy(&fsx, ctx->fs, sizeof(fsx));
+ memcpy(&superx, ctx->fs->super, sizeof(superx));
+ fsx.super = &superx;
+ ext2fs_set_feature_metadata_csum(fsx.super);
+ if (!ext2fs_superblock_csum_verify(&fsx, p) &&
+ fix_problem(ctx, PR_0_EXT_JOURNAL_SUPER_CSUM_INVALID,
+ &pctx)) {
+ ext2fs_superblock_csum_set(&fsx, p);
+ mark_buffer_dirty(bh);
+ }
+ }
+ brelse(bh);
+
+ maxlen = ext2fs_blocks_count(&jsuper);
+ journal->j_maxlen = (maxlen < 1ULL << 32) ? maxlen : (1ULL << 32) - 1;
+ start++;
}
- if (!uuid_is_null(sb->s_journal_uuid)) {
- uuid_unparse(sb->s_journal_uuid, uuid_str);
- pctx.str = uuid_str;
- if (!fix_problem(ctx, PR_0_JOURNAL_BAD_UUID, &pctx))
- return EXT2_ET_UNSUPP_FEATURE;
- uuid_clear(sb->s_journal_uuid);
- sb->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(ctx->fs);
+
+ if (!(bh = getblk(dev_journal, start, journal->j_blocksize))) {
+ retval = EXT2_ET_NO_MEMORY;
+ goto errout;
}
- return e2fsck_journal_init_inode(ctx, sb, sb->s_journal_inum, journal);
+ journal->j_sb_buffer = bh;
+ journal->j_superblock = (journal_superblock_t *)bh->b_data;
+
+#ifdef USE_INODE_IO
+ if (j_inode)
+ ext2fs_free_mem(&j_inode);
+#endif
+
+ *ret_journal = journal;
+ e2fsck_use_inode_shortcuts(ctx, 0);
+ return 0;
+
+errout:
+ e2fsck_use_inode_shortcuts(ctx, 0);
+ if (dev_fs)
+ ext2fs_free_mem(&dev_fs);
+ if (j_inode)
+ ext2fs_free_mem(&j_inode);
+ if (journal)
+ ext2fs_free_mem(&journal);
+ return retval;
}
static errcode_t e2fsck_journal_fix_bad_inode(e2fsck_t ctx,
struct problem_context *pctx)
{
struct ext2_super_block *sb = ctx->fs->super;
- int recover = ctx->fs->super->s_feature_incompat &
- EXT3_FEATURE_INCOMPAT_RECOVER;
- int has_journal = ctx->fs->super->s_feature_compat &
- EXT3_FEATURE_COMPAT_HAS_JOURNAL;
+ int recover = ext2fs_has_feature_journal_needs_recovery(ctx->fs->super);
+ int has_journal = ext2fs_has_feature_journal(ctx->fs->super);
if (has_journal || sb->s_journal_inum) {
/* The journal inode is bogus, remove and force full fsck */
pctx->ino = sb->s_journal_inum;
if (fix_problem(ctx, PR_0_JOURNAL_BAD_INODE, pctx)) {
if (has_journal && sb->s_journal_inum)
- printf("*** ext3 journal has been deleted - "
- "filesystem is now ext2 only ***\n\n");
- sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
+ printf("*** journal has been deleted ***\n\n");
+ ext2fs_clear_feature_journal(sb);
sb->s_journal_inum = 0;
+ memset(sb->s_jnl_blocks, 0, sizeof(sb->s_jnl_blocks));
+ ctx->flags |= E2F_FLAG_JOURNAL_INODE;
+ ctx->fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
e2fsck_clear_recover(ctx, 1);
return 0;
}
- return EXT2_ET_BAD_INODE_NUM;
+ return EXT2_ET_CORRUPT_JOURNAL_SB;
} else if (recover) {
if (fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, pctx)) {
e2fsck_clear_recover(ctx, 1);
return 0;
}
+#define V1_SB_SIZE 0x0024
+static void clear_v2_journal_fields(journal_t *journal)
+{
+ e2fsck_t ctx = journal->j_dev->k_ctx;
+ struct problem_context pctx;
+
+ clear_problem_context(&pctx);
+
+ if (!fix_problem(ctx, PR_0_CLEAR_V2_JOURNAL, &pctx))
+ return;
+
+ ctx->flags |= E2F_FLAG_PROBLEMS_FIXED;
+ memset(((char *) journal->j_superblock) + V1_SB_SIZE, 0,
+ ctx->fs->blocksize-V1_SB_SIZE);
+ mark_buffer_dirty(journal->j_sb_buffer);
+}
+
+
static errcode_t e2fsck_journal_load(journal_t *journal)
{
- e2fsck_t ctx = journal->j_dev;
+ e2fsck_t ctx = journal->j_dev->k_ctx;
journal_superblock_t *jsb;
struct buffer_head *jbh = journal->j_sb_buffer;
struct problem_context pctx;
ll_rw_block(READ, 1, &jbh);
if (jbh->b_err) {
- com_err(ctx->device_name, jbh->b_err,
+ com_err(ctx->device_name, jbh->b_err, "%s",
_("reading journal superblock\n"));
return jbh->b_err;
}
switch (ntohl(jsb->s_header.h_blocktype)) {
case JFS_SUPERBLOCK_V1:
journal->j_format_version = 1;
+ if (jsb->s_feature_compat ||
+ jsb->s_feature_incompat ||
+ jsb->s_feature_ro_compat ||
+ jsb->s_nr_users)
+ clear_v2_journal_fields(journal);
break;
-
+
case JFS_SUPERBLOCK_V2:
journal->j_format_version = 2;
+ if (ntohl(jsb->s_nr_users) > 1 &&
+ uuid_is_null(ctx->fs->super->s_journal_uuid))
+ clear_v2_journal_fields(journal);
+ if (ntohl(jsb->s_nr_users) > 1) {
+ fix_problem(ctx, PR_0_JOURNAL_UNSUPP_MULTIFS, &pctx);
+ return EXT2_ET_JOURNAL_UNSUPP_VERSION;
+ }
break;
-
+
+ /*
+ * These should never appear in a journal super block, so if
+ * they do, the journal is badly corrupted.
+ */
+ case JFS_DESCRIPTOR_BLOCK:
+ case JFS_COMMIT_BLOCK:
+ case JFS_REVOKE_BLOCK:
+ return EXT2_ET_CORRUPT_JOURNAL_SB;
+
/* If we don't understand the superblock major type, but there
* is a magic number, then it is likely to be a new format we
* just don't understand, so leave it alone. */
default:
- com_err(ctx->program_name, EXT2_ET_UNSUPP_FEATURE,
- _("%s: journal has unrecognised format\n"),
- ctx->device_name);
- return EXT2_ET_UNSUPP_FEATURE;
+ return EXT2_ET_JOURNAL_UNSUPP_VERSION;
}
- if (JFS_HAS_INCOMPAT_FEATURE(journal, ~JFS_KNOWN_INCOMPAT_FEATURES)) {
- com_err(ctx->program_name, EXT2_ET_UNSUPP_FEATURE,
- _("%s: journal has incompatible features\n"),
- ctx->device_name);
+ if (JFS_HAS_INCOMPAT_FEATURE(journal, ~JFS_KNOWN_INCOMPAT_FEATURES))
return EXT2_ET_UNSUPP_FEATURE;
- }
-
- if (JFS_HAS_RO_COMPAT_FEATURE(journal, ~JFS_KNOWN_ROCOMPAT_FEATURES)) {
- com_err(ctx->program_name, EXT2_ET_UNSUPP_FEATURE,
- _("%s: journal has readonly-incompatible features\n"),
- ctx->device_name);
+
+ if (JFS_HAS_RO_COMPAT_FEATURE(journal, ~JFS_KNOWN_ROCOMPAT_FEATURES))
return EXT2_ET_RO_UNSUPP_FEATURE;
- }
+
+ /* Checksum v1-3 are mutually exclusive features. */
+ if (jfs_has_feature_csum2(journal) && jfs_has_feature_csum3(journal))
+ return EXT2_ET_CORRUPT_JOURNAL_SB;
+
+ if (journal_has_csum_v2or3(journal) &&
+ jfs_has_feature_checksum(journal))
+ return EXT2_ET_CORRUPT_JOURNAL_SB;
+
+ if (!e2fsck_journal_verify_csum_type(journal, jsb) ||
+ !e2fsck_journal_sb_csum_verify(journal, jsb))
+ return EXT2_ET_CORRUPT_JOURNAL_SB;
+
+ if (journal_has_csum_v2or3(journal))
+ journal->j_csum_seed = jbd2_chksum(journal, ~0, jsb->s_uuid,
+ sizeof(jsb->s_uuid));
/* We have now checked whether we know enough about the journal
* format to be able to proceed safely, so any other checks that
* fail we should attempt to recover from. */
if (jsb->s_blocksize != htonl(journal->j_blocksize)) {
- com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK,
+ com_err(ctx->program_name, EXT2_ET_CORRUPT_JOURNAL_SB,
_("%s: no valid journal superblock found\n"),
ctx->device_name);
- return EXT2_ET_CORRUPT_SUPERBLOCK;
+ return EXT2_ET_CORRUPT_JOURNAL_SB;
}
if (ntohl(jsb->s_maxlen) < journal->j_maxlen)
journal->j_maxlen = ntohl(jsb->s_maxlen);
else if (ntohl(jsb->s_maxlen) > journal->j_maxlen) {
- com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK,
+ com_err(ctx->program_name, EXT2_ET_CORRUPT_JOURNAL_SB,
_("%s: journal too short\n"),
ctx->device_name);
- return EXT2_ET_CORRUPT_SUPERBLOCK;
+ return EXT2_ET_CORRUPT_JOURNAL_SB;
}
journal->j_tail_sequence = ntohl(jsb->s_sequence);
journal_t *journal)
{
char *p;
-
+ union {
+ uuid_t uuid;
+ __u32 val[4];
+ } u;
+ __u32 new_seq = 0;
+ int i;
+
/* Leave a valid existing V1 superblock signature alone.
* Anything unrecognisable we overwrite with a new V2
* signature. */
-
+
if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER) ||
jsb->s_header.h_blocktype != htonl(JFS_SUPERBLOCK_V1)) {
jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER);
}
/* Zero out everything else beyond the superblock header */
-
+
p = ((char *) jsb) + sizeof(journal_header_t);
memset (p, 0, ctx->fs->blocksize-sizeof(journal_header_t));
jsb->s_blocksize = htonl(ctx->fs->blocksize);
jsb->s_maxlen = htonl(journal->j_maxlen);
jsb->s_first = htonl(1);
- jsb->s_sequence = htonl(1);
- /* In theory we should also re-zero the entire journal here.
- * Initialising s_sequence to a random value would be a
- * reasonable compromise. */
+ /* Initialize the journal sequence number so that there is "no"
+ * chance we will find old "valid" transactions in the journal.
+ * This avoids the need to zero the whole journal (slow to do,
+ * and risky when we are just recovering the filesystem).
+ */
+ uuid_generate(u.uuid);
+ for (i = 0; i < 4; i ++)
+ new_seq ^= u.val[i];
+ jsb->s_sequence = htonl(new_seq);
+ e2fsck_journal_sb_csum_set(journal, jsb);
+ mark_buffer_dirty(journal->j_sb_buffer);
ll_rw_block(WRITE, 1, &journal->j_sb_buffer);
}
struct problem_context *pctx)
{
struct ext2_super_block *sb = ctx->fs->super;
- int recover = ctx->fs->super->s_feature_incompat &
- EXT3_FEATURE_INCOMPAT_RECOVER;
+ int recover = ext2fs_has_feature_journal_needs_recovery(ctx->fs->super);
- pctx->num = journal->j_inode->i_ino;
-
- if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
+ if (ext2fs_has_feature_journal(sb)) {
if (fix_problem(ctx, PR_0_JOURNAL_BAD_SUPER, pctx)) {
e2fsck_journal_reset_super(ctx, journal->j_superblock,
journal);
e2fsck_clear_recover(ctx, recover);
return 0;
}
- return EXT2_ET_CORRUPT_SUPERBLOCK;
+ return EXT2_ET_CORRUPT_JOURNAL_SB;
} else if (e2fsck_journal_fix_bad_inode(ctx, pctx))
- return EXT2_ET_CORRUPT_SUPERBLOCK;
+ return EXT2_ET_CORRUPT_JOURNAL_SB;
return 0;
}
mark_buffer_clean(journal->j_sb_buffer);
else if (!(ctx->options & E2F_OPT_READONLY)) {
jsb = journal->j_superblock;
- jsb->s_sequence = htonl(journal->j_transaction_sequence);
+ jsb->s_sequence = htonl(journal->j_tail_sequence);
if (reset)
jsb->s_start = 0; /* this marks the journal as empty */
- mark_buffer_dirty(journal->j_sb_buffer, 1);
+ e2fsck_journal_sb_csum_set(journal, jsb);
+ mark_buffer_dirty(journal->j_sb_buffer);
}
brelse(journal->j_sb_buffer);
+ if (ctx->journal_io) {
+ if (ctx->fs && ctx->fs->io != ctx->journal_io)
+ io_channel_close(ctx->journal_io);
+ ctx->journal_io = 0;
+ }
+
+#ifndef USE_INODE_IO
if (journal->j_inode)
- ext2fs_free_mem((void **)&journal->j_inode);
- ext2fs_free_mem((void **)&journal);
+ ext2fs_free_mem(&journal->j_inode);
+#endif
+ if (journal->j_fs_dev)
+ ext2fs_free_mem(&journal->j_fs_dev);
+ ext2fs_free_mem(&journal);
}
/*
* This function makes sure that the superblock fields regarding the
* journal are consistent.
*/
-int e2fsck_check_ext3_journal(e2fsck_t ctx)
+errcode_t e2fsck_check_ext3_journal(e2fsck_t ctx)
{
struct ext2_super_block *sb = ctx->fs->super;
journal_t *journal;
- int recover = ctx->fs->super->s_feature_incompat &
- EXT3_FEATURE_INCOMPAT_RECOVER;
+ int recover = ext2fs_has_feature_journal_needs_recovery(ctx->fs->super);
struct problem_context pctx;
+ problem_t problem;
int reset = 0, force_fsck = 0;
- int retval;
+ errcode_t retval;
/* If we don't have any journal features, don't do anything more */
- if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
+ if (!ext2fs_has_feature_journal(sb) &&
!recover && sb->s_journal_inum == 0 && sb->s_journal_dev == 0 &&
uuid_is_null(sb->s_journal_uuid))
return 0;
-#ifdef JFS_DEBUG /* Enabled by configure --enable-jfs-debug */
- journal_enable_debug = 2;
-#endif
clear_problem_context(&pctx);
pctx.num = sb->s_journal_inum;
retval = e2fsck_get_journal(ctx, &journal);
if (retval) {
- if (retval == EXT2_ET_BAD_INODE_NUM)
+ if ((retval == EXT2_ET_BAD_INODE_NUM) ||
+ (retval == EXT2_ET_BAD_BLOCK_NUM) ||
+ (retval == EXT2_ET_JOURNAL_TOO_SMALL) ||
+ (retval == EXT2_ET_NO_JOURNAL))
return e2fsck_journal_fix_bad_inode(ctx, &pctx);
return retval;
}
retval = e2fsck_journal_load(journal);
if (retval) {
- if (retval == EXT2_ET_CORRUPT_SUPERBLOCK)
+ if ((retval == EXT2_ET_CORRUPT_JOURNAL_SB) ||
+ ((retval == EXT2_ET_UNSUPP_FEATURE) &&
+ (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_INCOMPAT,
+ &pctx))) ||
+ ((retval == EXT2_ET_RO_UNSUPP_FEATURE) &&
+ (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_ROCOMPAT,
+ &pctx))) ||
+ ((retval == EXT2_ET_JOURNAL_UNSUPP_VERSION) &&
+ (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_VERSION, &pctx))))
retval = e2fsck_journal_fix_corrupt_super(ctx, journal,
&pctx);
e2fsck_journal_release(ctx, journal, 0, 1);
* with -y, -n, or -p, only if a user isn't making up their mind.
*/
no_has_journal:
- if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
- recover = sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER;
- pctx.str = "inode";
+ if (!ext2fs_has_feature_journal(sb)) {
+ recover = ext2fs_has_feature_journal_needs_recovery(sb);
if (fix_problem(ctx, PR_0_JOURNAL_HAS_JOURNAL, &pctx)) {
if (recover &&
!fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, &pctx))
sizeof(sb->s_journal_uuid));
e2fsck_clear_recover(ctx, force_fsck);
} else if (!(ctx->options & E2F_OPT_READONLY)) {
- sb->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL;
+ ext2fs_set_feature_journal(sb);
+ ctx->fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
ext2fs_mark_super_dirty(ctx->fs);
}
}
- if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL &&
- !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) &&
+ if (ext2fs_has_feature_journal(sb) &&
+ !ext2fs_has_feature_journal_needs_recovery(sb) &&
journal->j_superblock->s_start != 0) {
- if (fix_problem(ctx, PR_0_JOURNAL_RESET_JOURNAL, &pctx)) {
+ /* Print status information */
+ fix_problem(ctx, PR_0_JOURNAL_RECOVERY_CLEAR, &pctx);
+ if (ctx->superblock)
+ problem = PR_0_JOURNAL_RUN_DEFAULT;
+ else
+ problem = PR_0_JOURNAL_RUN;
+ if (fix_problem(ctx, problem, &pctx)) {
+ ctx->options |= E2F_OPT_FORCE;
+ ext2fs_set_feature_journal_needs_recovery(sb);
+ ext2fs_mark_super_dirty(ctx->fs);
+ } else if (fix_problem(ctx,
+ PR_0_JOURNAL_RESET_JOURNAL, &pctx)) {
reset = 1;
sb->s_state &= ~EXT2_VALID_FS;
ext2fs_mark_super_dirty(ctx->fs);
* ignore the fact that journal apparently has data;
* accidentally replaying over valid data would be far
* worse than skipping a questionable recovery.
- *
+ *
* XXX should we abort with a fatal error here? What
* will the ext3 kernel code do if a filesystem with
* !NEEDS_RECOVERY but with a non-zero
*/
}
+ /*
+ * If we don't need to do replay the journal, check to see if
+ * the journal's errno is set; if so, we need to mark the file
+ * system as being corrupt and clear the journal's s_errno.
+ */
+ if (!ext2fs_has_feature_journal_needs_recovery(sb) &&
+ journal->j_superblock->s_errno) {
+ ctx->fs->super->s_state |= EXT2_ERROR_FS;
+ ext2fs_mark_super_dirty(ctx->fs);
+ journal->j_superblock->s_errno = 0;
+ e2fsck_journal_sb_csum_set(journal, journal->j_superblock);
+ mark_buffer_dirty(journal->j_sb_buffer);
+ }
+
e2fsck_journal_release(ctx, journal, reset, 0);
return retval;
}
static errcode_t recover_ext3_journal(e2fsck_t ctx)
{
+ struct problem_context pctx;
journal_t *journal;
- int retval;
+ errcode_t retval;
+ clear_problem_context(&pctx);
+
+ journal_init_revoke_caches();
retval = e2fsck_get_journal(ctx, &journal);
if (retval)
return retval;
retval = journal_init_revoke(journal, 1024);
if (retval)
goto errout;
-
- retval = -journal_recover(journal);
-errout:
- e2fsck_journal_release(ctx, journal, 1, 0);
- return retval;
-}
-
-#if 0
-#define TEMPLATE "/tmp/ext3.XXXXXX"
-
-/*
- * This function attempts to mount and unmount an ext3 filesystem,
- * which is a cheap way to force the kernel to run the journal and
- * handle the recovery for us.
- */
-static errcode_t recover_ext3_journal_via_mount(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- char *dirlist[] = {"/mnt","/lost+found","/tmp","/root","/boot",0};
- errcode_t retval, retval2;
- int count = 0;
- char template[] = TEMPLATE;
- struct stat buf;
- char *tmpdir;
-
- if (ctx->options & E2F_OPT_READONLY) {
- printf("%s: won't do journal recovery while read-only\n",
- ctx->device_name);
- return EXT2_ET_FILE_RO;
- }
-
- printf(_("%s: trying for ext3 kernel journal recovery\n"),
- ctx->device_name);
- /*
- * First try to make a temporary directory. This may fail if
- * the root partition is still mounted read-only.
- */
-newtemp:
- tmpdir = mktemp(template);
- if (tmpdir) {
- jfs_debug(2, "trying %s as ext3 temp mount point\n", tmpdir);
- if (mkdir(template, 0700)) {
- if (errno == EROFS) {
- tmpdir = NULL;
- template[0] = '\0';
- } else if (errno == EEXIST && count++ < 10) {
- strcpy(template, TEMPLATE);
- goto newtemp;
- }
- return errno;
- }
- }
-
- /*
- * OK, creating a temporary directory didn't work.
- * Let's try a list of possible temporary mountpoints.
- */
- if (!tmpdir) {
- dev_t rootdev;
- char **cpp, *dir;
-
- if (stat("/", &buf))
- return errno;
-
- rootdev = buf.st_dev;
+ retval = -journal_recover(journal);
+ if (retval)
+ goto errout;
- /*
- * Check that dir is on the same device as root (no other
- * filesystem is mounted there), and it's a directory.
- */
- for (cpp = dirlist; (dir = *cpp); cpp++)
- if (stat(dir, &buf) == 0 && buf.st_dev == rootdev &&
- S_ISDIR(buf.st_mode)) {
- tmpdir = dir;
- break;
- }
+ if (journal->j_failed_commit) {
+ pctx.ino = journal->j_failed_commit;
+ fix_problem(ctx, PR_0_JNL_TXN_CORRUPT, &pctx);
+ journal->j_superblock->s_errno = -EINVAL;
+ mark_buffer_dirty(journal->j_sb_buffer);
}
- if (tmpdir) {
- io_manager io_ptr = fs->io->manager;
- int blocksize = fs->blocksize;
-
- jfs_debug(2, "using %s for ext3 mount\n", tmpdir);
- /* FIXME - need to handle loop devices here */
- if (mount(ctx->device_name, tmpdir, "ext3", MNT_FL, NULL)) {
- retval = errno;
- com_err(ctx->program_name, errno,
- "when mounting %s", ctx->device_name);
- if (template[0])
- rmdir(tmpdir);
- return retval;
- }
- /*
- * Now that it mounted cleanly, the filesystem will have been
- * recovered, so we can now unmount it.
- */
- if (umount(tmpdir))
- return errno;
+ journal->j_tail_sequence = journal->j_transaction_sequence;
- /*
- * Remove the temporary directory, if it was created.
- */
- if (template[0])
- rmdir(tmpdir);
- return 0;
- }
+errout:
+ journal_destroy_revoke(journal);
+ journal_destroy_revoke_caches();
+ e2fsck_journal_release(ctx, journal, 1, 0);
+ return retval;
}
-#endif
-int e2fsck_run_ext3_journal(e2fsck_t ctx)
+errcode_t e2fsck_run_ext3_journal(e2fsck_t ctx)
{
io_manager io_ptr = ctx->fs->io->manager;
int blocksize = ctx->fs->blocksize;
errcode_t retval, recover_retval;
+ io_stats stats = 0;
+ unsigned long long kbytes_written = 0;
printf(_("%s: recovering journal\n"), ctx->device_name);
if (ctx->options & E2F_OPT_READONLY) {
return EXT2_ET_FILE_RO;
}
- ext2fs_flush(ctx->fs); /* Force out any modifications */
+ if (ctx->fs->flags & EXT2_FLAG_DIRTY)
+ ext2fs_flush(ctx->fs); /* Force out any modifications */
recover_retval = recover_ext3_journal(ctx);
-
+
/*
* Reload the filesystem context to get up-to-date data from disk
* because journal recovery will change the filesystem under us.
*/
- ext2fs_close(ctx->fs);
- retval = ext2fs_open(ctx->filesystem_name, EXT2_FLAG_RW,
+ if (ctx->fs->super->s_kbytes_written &&
+ ctx->fs->io->manager->get_stats)
+ ctx->fs->io->manager->get_stats(ctx->fs->io, &stats);
+ if (stats && stats->bytes_written)
+ kbytes_written = stats->bytes_written >> 10;
+
+ ext2fs_mmp_stop(ctx->fs);
+ ext2fs_free(ctx->fs);
+ retval = ext2fs_open(ctx->filesystem_name, ctx->openfs_flags,
ctx->superblock, blocksize, io_ptr,
&ctx->fs);
-
if (retval) {
com_err(ctx->program_name, retval,
_("while trying to re-open %s"),
fatal_error(ctx, 0);
}
ctx->fs->priv_data = ctx;
+ ctx->fs->now = ctx->now;
+ ctx->fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
+ ctx->fs->super->s_kbytes_written += kbytes_written;
/* Set the superblock flags */
- e2fsck_clear_recover(ctx, recover_retval);
- return recover_retval;
+ e2fsck_clear_recover(ctx, recover_retval != 0);
+
+ /*
+ * Do one last sanity check, and propagate journal->s_errno to
+ * the EXT2_ERROR_FS flag in the fs superblock if needed.
+ */
+ retval = e2fsck_check_ext3_journal(ctx);
+ return retval ? retval : recover_retval;
+}
+
+/*
+ * This function will move the journal inode from a visible file in
+ * the filesystem directory hierarchy to the reserved inode if necessary.
+ */
+static const char * const journal_names[] = {
+ ".journal", "journal", ".journal.dat", "journal.dat", 0 };
+
+void e2fsck_move_ext3_journal(e2fsck_t ctx)
+{
+ struct ext2_super_block *sb = ctx->fs->super;
+ struct problem_context pctx;
+ struct ext2_inode inode;
+ ext2_filsys fs = ctx->fs;
+ ext2_ino_t ino;
+ errcode_t retval;
+ const char * const * cpp;
+ dgrp_t group;
+ int mount_flags;
+
+ clear_problem_context(&pctx);
+
+ /*
+ * If the filesystem is opened read-only, or there is no
+ * journal, then do nothing.
+ */
+ if ((ctx->options & E2F_OPT_READONLY) ||
+ (sb->s_journal_inum == 0) ||
+ !ext2fs_has_feature_journal(sb))
+ return;
+
+ /*
+ * Read in the journal inode
+ */
+ if (ext2fs_read_inode(fs, sb->s_journal_inum, &inode) != 0)
+ return;
+
+ /*
+ * If it's necessary to backup the journal inode, do so.
+ */
+ if ((sb->s_jnl_backup_type == 0) ||
+ ((sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS) &&
+ memcmp(inode.i_block, sb->s_jnl_blocks, EXT2_N_BLOCKS*4))) {
+ if (fix_problem(ctx, PR_0_BACKUP_JNL, &pctx)) {
+ memcpy(sb->s_jnl_blocks, inode.i_block,
+ EXT2_N_BLOCKS*4);
+ sb->s_jnl_blocks[15] = inode.i_size_high;
+ sb->s_jnl_blocks[16] = inode.i_size;
+ sb->s_jnl_backup_type = EXT3_JNL_BACKUP_BLOCKS;
+ ext2fs_mark_super_dirty(fs);
+ fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
+ }
+ }
+
+ /*
+ * If the journal is already the hidden inode, then do nothing
+ */
+ if (sb->s_journal_inum == EXT2_JOURNAL_INO)
+ return;
+
+ /*
+ * The journal inode had better have only one link and not be readable.
+ */
+ if (inode.i_links_count != 1)
+ return;
+
+ /*
+ * If the filesystem is mounted, or we can't tell whether
+ * or not it's mounted, do nothing.
+ */
+ retval = ext2fs_check_if_mounted(ctx->filesystem_name, &mount_flags);
+ if (retval || (mount_flags & EXT2_MF_MOUNTED))
+ return;
+
+ /*
+ * If we can't find the name of the journal inode, then do
+ * nothing.
+ */
+ for (cpp = journal_names; *cpp; cpp++) {
+ retval = ext2fs_lookup(fs, EXT2_ROOT_INO, *cpp,
+ strlen(*cpp), 0, &ino);
+ if ((retval == 0) && (ino == sb->s_journal_inum))
+ break;
+ }
+ if (*cpp == 0)
+ return;
+
+ /* We need the inode bitmap to be loaded */
+ retval = ext2fs_read_bitmaps(fs);
+ if (retval)
+ return;
+
+ pctx.str = *cpp;
+ if (!fix_problem(ctx, PR_0_MOVE_JOURNAL, &pctx))
+ return;
+
+ /*
+ * OK, we've done all the checks, let's actually move the
+ * journal inode. Errors at this point mean we need to force
+ * an ext2 filesystem check.
+ */
+ if ((retval = ext2fs_unlink(fs, EXT2_ROOT_INO, *cpp, ino, 0)) != 0)
+ goto err_out;
+ if ((retval = ext2fs_write_inode(fs, EXT2_JOURNAL_INO, &inode)) != 0)
+ goto err_out;
+ sb->s_journal_inum = EXT2_JOURNAL_INO;
+ ext2fs_mark_super_dirty(fs);
+ fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
+ inode.i_links_count = 0;
+ inode.i_dtime = ctx->now;
+ if ((retval = ext2fs_write_inode(fs, ino, &inode)) != 0)
+ goto err_out;
+
+ group = ext2fs_group_of_ino(fs, ino);
+ ext2fs_unmark_inode_bitmap2(fs->inode_map, ino);
+ ext2fs_mark_ib_dirty(fs);
+ ext2fs_bg_free_inodes_count_set(fs, group, ext2fs_bg_free_inodes_count(fs, group) + 1);
+ ext2fs_group_desc_csum_set(fs, group);
+ fs->super->s_free_inodes_count++;
+ return;
+
+err_out:
+ pctx.errcode = retval;
+ fix_problem(ctx, PR_0_ERR_MOVE_JOURNAL, &pctx);
+ fs->super->s_state &= ~EXT2_VALID_FS;
+ ext2fs_mark_super_dirty(fs);
+ return;
+}
+
+/*
+ * This function makes sure the superblock hint for the external
+ * journal is correct.
+ */
+int e2fsck_fix_ext3_journal_hint(e2fsck_t ctx)
+{
+ struct ext2_super_block *sb = ctx->fs->super;
+ struct problem_context pctx;
+ char uuid[37], *journal_name;
+ struct stat st;
+
+ if (!ext2fs_has_feature_journal(sb) ||
+ uuid_is_null(sb->s_journal_uuid))
+ return 0;
+
+ uuid_unparse(sb->s_journal_uuid, uuid);
+ journal_name = blkid_get_devname(ctx->blkid, "UUID", uuid);
+ if (!journal_name)
+ return 0;
+
+ if (stat(journal_name, &st) < 0) {
+ free(journal_name);
+ return 0;
+ }
+
+ if (st.st_rdev != sb->s_journal_dev) {
+ clear_problem_context(&pctx);
+ pctx.num = st.st_rdev;
+ if (fix_problem(ctx, PR_0_EXTERNAL_JOURNAL_HINT, &pctx)) {
+ sb->s_journal_dev = st.st_rdev;
+ ext2fs_mark_super_dirty(ctx->fs);
+ }
+ }
+
+ free(journal_name);
+ return 0;
}
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff