#include <sys/stat.h>
#endif
-#include "jfs.h"
+#define E2FSCK_INCLUDE_INLINE_FUNCS
+#include "jfs_user.h"
#include "problem.h"
#include "uuid/uuid.h"
-#ifdef JFS_DEBUG
+#ifdef JFS_DEBUG /* Enabled by configure --enable-jfs-debug */
static int bh_count = 0;
-int jfs_enable_debug = 2;
+int journal_enable_debug = 2;
#endif
+/* 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 retval;
return NULL;
jfs_debug(4, "getblk for block %lu (%d bytes)(total %d)\n",
- blocknr, blocksize, ++bh_count);
+ (unsigned long) blocknr, blocksize, ++bh_count);
bh->b_ctx = ctx;
bh->b_size = blocksize;
return bh;
}
-void ll_rw_block(int rw, int dummy, struct buffer_head *bh)
+void ll_rw_block(int rw, int nr, struct buffer_head *bhp[])
{
int retval;
+ struct buffer_head *bh;
- if (rw == READ && !bh->b_uptodate) {
- jfs_debug(3, "reading block %lu/%p\n", bh->b_blocknr, bh);
- retval = io_channel_read_blk(bh->b_ctx->fs->io, bh->b_blocknr,
- 1, bh->b_data);
- if (retval) {
- com_err(bh->b_ctx->device_name, retval,
- "while reading block %ld\n", bh->b_blocknr);
- bh->b_err = retval;
- return;
- }
- bh->b_uptodate = 1;
- } else if (rw == WRITE && bh->b_dirty) {
- jfs_debug(3, "writing block %lu/%p\n", bh->b_blocknr, bh);
- retval = io_channel_write_blk(bh->b_ctx->fs->io, bh->b_blocknr,
- 1, bh->b_data);
- if (retval) {
- com_err(bh->b_ctx->device_name, retval,
- "while writing block %ld\n", bh->b_blocknr);
- bh->b_err = retval;
- return;
- }
- bh->b_dirty = 0;
- bh->b_uptodate = 1;
- } else
- jfs_debug(3, "no-op %s for block %lu\n",
- rw == READ ? "read" : "write", bh->b_blocknr);
+ 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->journal_io,
+ bh->b_blocknr,
+ 1, bh->b_data);
+ if (retval) {
+ com_err(bh->b_ctx->device_name, retval,
+ "while reading block %ld\n",
+ bh->b_blocknr);
+ bh->b_err = 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->journal_io,
+ bh->b_blocknr,
+ 1, bh->b_data);
+ if (retval) {
+ com_err(bh->b_ctx->device_name, retval,
+ "while writing block %ld\n",
+ bh->b_blocknr);
+ bh->b_err = 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);
+ }
}
void mark_buffer_dirty(struct buffer_head *bh, int dummy)
bh->b_dirty = dummy | 1; /* use dummy to avoid unused variable */
}
+static void mark_buffer_clean(struct buffer_head * bh)
+{
+ bh->b_dirty = 0;
+}
+
void brelse(struct buffer_head *bh)
{
if (bh->b_dirty)
- ll_rw_block(WRITE, 1, bh);
+ ll_rw_block(WRITE, 1, &bh);
jfs_debug(3, "freeing block %lu/%p (total %d)\n",
- bh->b_blocknr, bh, --bh_count);
+ (unsigned long) bh->b_blocknr, (void *) bh, --bh_count);
ext2fs_free_mem((void **) &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)
- ll_rw_block(READ, 1, bh);
+ ll_rw_block(READ, 1, &bh);
}
+
static void e2fsck_clear_recover(e2fsck_t ctx, int error)
{
- struct ext2fs_sb *s = (struct ext2fs_sb *)ctx->fs->super;
-
- s->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER;
+ ctx->fs->super->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER;
/* if we had an error doing journal recovery, we need a full fsck */
if (error)
- s->s_state &= ~EXT2_VALID_FS;
+ ctx->fs->super->s_state &= ~EXT2_VALID_FS;
ext2fs_mark_super_dirty(ctx->fs);
}
-static int e2fsck_journal_init_inode(e2fsck_t ctx, struct ext2fs_sb *s,
- ino_t journal_inum, journal_t **journal)
+static errcode_t e2fsck_journal_init_inode(e2fsck_t ctx,
+ struct ext2_super_block *s,
+ journal_t **journal)
{
struct inode *inode;
- const char *cmdname = ctx->program_name;
struct buffer_head *bh;
blk_t start;
int retval;
- jfs_debug(1, "Using journal inode %lu\n", journal_inum);
+ jfs_debug(1, "Using journal inode %u\n", s->s_journal_inum);
*journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal");
if (!*journal) {
return EXT2_ET_NO_MEMORY;
}
inode->i_ctx = ctx;
- inode->i_ino = journal_inum;
- retval = ext2fs_read_inode(ctx->fs, journal_inum, &inode->i_ext2);
+ inode->i_ino = s->s_journal_inum;
+ retval = ext2fs_read_inode(ctx->fs, s->s_journal_inum, &inode->i_ext2);
if (retval)
goto exit_inode;
(*journal)->j_inode = inode;
(*journal)->j_blocksize = ctx->fs->blocksize;
(*journal)->j_maxlen = inode->i_ext2.i_size / (*journal)->j_blocksize;
+ ctx->journal_io = ctx->fs->io;
if (!inode->i_ext2.i_links_count ||
!LINUX_S_ISREG(inode->i_ext2.i_mode) ||
}
(*journal)->j_sb_buffer = bh;
(*journal)->j_superblock = (journal_superblock_t *)bh->b_data;
-
+
return 0;
exit_inode:
return retval;
}
-static int e2fsck_get_journal(e2fsck_t ctx, journal_t **journal)
+static errcode_t e2fsck_journal_init_dev(e2fsck_t ctx,
+ struct ext2_super_block *s,
+ journal_t **journal)
{
- char uuid_str[40];
+ struct buffer_head *bh;
+ io_manager io_ptr;
+ blk_t start;
+ int retval;
+ int blocksize = ctx->fs->blocksize;
+ struct ext2_super_block jsuper;
struct problem_context pctx;
- struct ext2fs_sb *s = (struct ext2fs_sb *)ctx->fs->super;
- int recover = s->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER;
+ const char *journal_name;
clear_problem_context(&pctx);
+ journal_name = ctx->journal_name;
+ if (!journal_name)
+ journal_name = ext2fs_find_block_device(s->s_journal_dev);
- if (s->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
- if (s->s_journal_dev) {
- pctx.num = s->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;
- s->s_journal_dev = 0;
- s->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(ctx->fs);
- }
- if (!uuid_is_null(s->s_journal_uuid)) {
- uuid_unparse(s->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(s->s_journal_uuid);
- s->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(ctx->fs);
- }
- if (!s->s_journal_inum)
- return EXT2_ET_BAD_INODE_NUM;
+ if (!journal_name) {
+ fix_problem(ctx, PR_0_CANT_FIND_JOURNAL, &pctx);
+ return EXT2_ET_LOAD_EXT_JOURNAL;
}
- if (s->s_journal_dev) {
- pctx.num = s->s_journal_dev;
- if (!fix_problem(ctx, PR_0_JOURNAL_BAD_DEV, &pctx))
- return EXT2_ET_UNSUPP_FEATURE;
- s->s_journal_dev = 0;
- s->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(ctx->fs);
+ jfs_debug(1, "Using journal file %s\n", journal_name);
+
+#if 1
+ io_ptr = unix_io_manager;
+#else
+ io_ptr = test_io_manager;
+ test_io_backing_manager = unix_io_manager;
+#endif
+ retval = io_ptr->open(journal_name, IO_FLAG_RW, &ctx->journal_io);
+ if (!ctx->journal_name)
+ free((void *) journal_name);
+ if (retval)
+ return retval;
+
+ io_channel_set_blksize(ctx->journal_io, blocksize);
+ start = (blocksize == 1024) ? 1 : 0;
+ bh = getblk(ctx, start, blocksize);
+ if (!bh)
+ return EXT2_ET_NO_MEMORY;
+ ll_rw_block(READ, 1, &bh);
+ if (bh->b_err)
+ return bh->b_err;
+ memcpy(&jsuper, start ? bh->b_data : bh->b_data + 1024,
+ sizeof(jsuper));
+ brelse(bh);
+#ifdef EXT2FS_ENABLE_SWAPFS
+ if (jsuper.s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC))
+ ext2fs_swap_super(&jsuper);
+#endif
+ if (jsuper.s_magic != EXT2_SUPER_MAGIC ||
+ !(jsuper.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
+ fix_problem(ctx, PR_0_EXT_JOURNAL_BAD_SUPER, &pctx);
+ return EXT2_ET_LOAD_EXT_JOURNAL;
}
- if (!uuid_is_null(s->s_journal_uuid)) {
- uuid_unparse(s->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(s->s_journal_uuid);
- s->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(ctx->fs);
+ /* 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);
+ return EXT2_ET_LOAD_EXT_JOURNAL;
}
+
+ *journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal");
+ if (!*journal) {
+ return EXT2_ET_NO_MEMORY;
+ }
+
+ (*journal)->j_dev = ctx;
+ (*journal)->j_inode = NULL;
+ (*journal)->j_blocksize = ctx->fs->blocksize;
+ (*journal)->j_maxlen = jsuper.s_blocks_count;
+
+ bh = getblk(ctx, start+1, (*journal)->j_blocksize);
+ if (!bh) {
+ retval = EXT2_ET_NO_MEMORY;
+ goto errout;
+ }
+ (*journal)->j_sb_buffer = bh;
+ (*journal)->j_superblock = (journal_superblock_t *)bh->b_data;
+
+ return 0;
- return e2fsck_journal_init_inode(ctx, s, s->s_journal_inum, journal);
+errout:
+ ext2fs_free_mem((void **)journal);
+ return retval;
}
-static int e2fsck_journal_fix_bad_inode(e2fsck_t ctx,
- struct problem_context *pctx)
+static errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **journal)
{
- struct ext2fs_sb *s = (struct ext2fs_sb *)ctx->fs->super;
- int recover = s->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER;
- int has_journal = s->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL;
+ struct ext2_super_block *sb = ctx->fs->super;
+
+ if (uuid_is_null(sb->s_journal_uuid)) {
+ if (!sb->s_journal_inum)
+ return EXT2_ET_BAD_INODE_NUM;
+ return e2fsck_journal_init_inode(ctx, sb, journal);
+ } else {
+ return e2fsck_journal_init_dev(ctx, sb, journal);
+ }
+}
- if (has_journal || s->s_journal_inum) {
+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;
+
+ 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)) {
- struct ext2fs_sb *s =(struct ext2fs_sb *)ctx->fs->super;
-
- if (has_journal && s->s_journal_inum)
+ if (has_journal && sb->s_journal_inum)
printf("*** ext3 journal has been deleted - "
"filesystem is now ext2 only ***\n\n");
- s->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
- s->s_journal_inum = 0;
+ sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
+ sb->s_journal_inum = 0;
+ ctx->flags |= E2F_FLAG_JOURNAL_INODE; /* FIXME: todo */
e2fsck_clear_recover(ctx, 1);
return 0;
}
return 0;
}
-static int e2fsck_journal_fix_unsupported_super(e2fsck_t ctx,
- struct problem_context *pctx)
-{
- struct ext2fs_sb *s = (struct ext2fs_sb *)ctx->fs->super;
-
- /* Unsupported journal superblock - first choice is abort.
- * Declining that gives the option to reset the superblock.
- *
- * Otherwise we get the chance to delete the journal, and
- * failing that we abort because we can't handle this.
- */
- if (s->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL &&
- fix_problem(ctx, PR_0_JOURNAL_UNSUPP_SUPER, pctx))
- return EXT2_ET_CORRUPT_SUPERBLOCK;
-
- if (e2fsck_journal_fix_bad_inode(ctx, pctx))
- return EXT2_ET_UNSUPP_FEATURE;
-
- return 0;
-}
-
-static int e2fsck_journal_load(journal_t *journal)
+static errcode_t e2fsck_journal_load(journal_t *journal)
{
e2fsck_t ctx = journal->j_dev;
journal_superblock_t *jsb;
clear_problem_context(&pctx);
- ll_rw_block(READ, 1, jbh);
+ ll_rw_block(READ, 1, &jbh);
if (jbh->b_err) {
com_err(ctx->device_name, jbh->b_err,
_("reading journal superblock\n"));
if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER))
return e2fsck_journal_fix_bad_inode(ctx, &pctx);
- if (jsb->s_header.h_blocktype != htonl(JFS_SUPERBLOCK) ||
- jsb->s_blocksize != htonl(journal->j_blocksize)) {
- com_err(ctx->device_name, EXT2_ET_CORRUPT_SUPERBLOCK,
- _("%s: no valid journal superblock found\n"));
+ switch (ntohl(jsb->s_header.h_blocktype)) {
+ case JFS_SUPERBLOCK_V1:
+ journal->j_format_version = 1;
+ break;
+
+ case JFS_SUPERBLOCK_V2:
+ journal->j_format_version = 2;
+ 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_SUPERBLOCK;
+
+ /* 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:
+ return EXT2_ET_JOURNAL_UNSUPP_VERSION;
}
- if (jsb->s_header.h_blocktype != htonl(JFS_SUPERBLOCK)) {
- pctx.num = ntohl(jsb->s_header.h_blocktype);
- return e2fsck_journal_fix_unsupported_super(ctx, &pctx);
+ 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))
+ return EXT2_ET_RO_UNSUPP_FEATURE;
+
+ /* 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,
+ _("%s: no valid journal superblock found\n"),
+ ctx->device_name);
+ return EXT2_ET_CORRUPT_SUPERBLOCK;
}
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->device_name, EXT2_ET_CORRUPT_SUPERBLOCK,
- _("%s: journal too short\n"));
+ com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK,
+ _("%s: journal too short\n"),
+ ctx->device_name);
return EXT2_ET_CORRUPT_SUPERBLOCK;
}
journal->j_tail_sequence = ntohl(jsb->s_sequence);
+ journal->j_transaction_sequence = journal->j_tail_sequence;
journal->j_tail = ntohl(jsb->s_start);
journal->j_first = ntohl(jsb->s_first);
journal->j_last = ntohl(jsb->s_maxlen);
return 0;
}
-void e2fsck_journal_reset_super(e2fsck_t ctx, journal_superblock_t *jsb,
- blk_t size)
+static void e2fsck_journal_reset_super(e2fsck_t ctx, journal_superblock_t *jsb,
+ journal_t *journal)
{
- jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER);
- jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK);
+ 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);
+ jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2);
+ }
+
+ /* 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(size);
- jsb->s_first = 1;
- jsb->s_sequence = htonl(1);
+ jsb->s_maxlen = htonl(journal->j_maxlen);
+ jsb->s_first = htonl(1);
+
+ /* 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);
+
+ mark_buffer_dirty(journal->j_sb_buffer, 1);
+ ll_rw_block(WRITE, 1, &journal->j_sb_buffer);
}
-static int e2fsck_journal_fix_corrupt_super(e2fsck_t ctx, journal_t *journal,
- struct problem_context *pctx)
+static errcode_t e2fsck_journal_fix_corrupt_super(e2fsck_t ctx,
+ journal_t *journal,
+ struct problem_context *pctx)
{
- struct ext2fs_sb *s = (struct ext2fs_sb *)ctx->fs->super;
- int recover = s->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER;
+ struct ext2_super_block *sb = ctx->fs->super;
+ int recover = ctx->fs->super->s_feature_incompat &
+ EXT3_FEATURE_INCOMPAT_RECOVER;
pctx->num = journal->j_inode->i_ino;
- if (s->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
+ if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
if (fix_problem(ctx, PR_0_JOURNAL_BAD_SUPER, pctx)) {
- journal_superblock_t *jsb = journal->j_superblock;
-
- e2fsck_journal_reset_super(ctx, jsb, journal->j_maxlen);
-
+ e2fsck_journal_reset_super(ctx, journal->j_superblock,
+ journal);
journal->j_transaction_sequence = 1;
e2fsck_clear_recover(ctx, recover);
return 0;
return 0;
}
-static void e2fsck_journal_release(e2fsck_t ctx, journal_t *journal, int reset)
+static void e2fsck_journal_release(e2fsck_t ctx, journal_t *journal,
+ int reset, int drop)
{
journal_superblock_t *jsb;
- if (!(ctx->options & E2F_OPT_READONLY)) {
+ if (drop)
+ 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);
if (reset)
}
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;
+ }
+
if (journal->j_inode)
- free(journal->j_inode);
+ ext2fs_free_mem((void **)&journal->j_inode);
ext2fs_free_mem((void **)&journal);
}
+/*
+ * This function makes sure that the superblock fields regarding the
+ * journal are consistent.
+ */
int e2fsck_check_ext3_journal(e2fsck_t ctx)
{
- struct ext2fs_sb *s = (struct ext2fs_sb *)ctx->fs->super;
+ struct ext2_super_block *sb = ctx->fs->super;
journal_t *journal;
- int recover = s->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER;
+ int recover = ctx->fs->super->s_feature_incompat &
+ EXT3_FEATURE_INCOMPAT_RECOVER;
struct problem_context pctx;
- int reset = 0;
+ int reset = 0, force_fsck = 0;
int retval;
/* If we don't have any journal features, don't do anything more */
- if (!(s->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
- !recover && s->s_journal_inum == 0 && s->s_journal_dev == 0 &&
- uuid_is_null(s->s_journal_uuid))
- return 0;
+ if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
+ !recover && sb->s_journal_inum == 0 && sb->s_journal_dev == 0 &&
+ uuid_is_null(sb->s_journal_uuid))
+ return 0;
clear_problem_context(&pctx);
- pctx.num = s->s_journal_inum;
+ pctx.num = sb->s_journal_inum;
retval = e2fsck_get_journal(ctx, &journal);
if (retval) {
retval = e2fsck_journal_load(journal);
if (retval) {
- if (retval == EXT2_ET_CORRUPT_SUPERBLOCK)
- return e2fsck_journal_fix_corrupt_super(ctx, journal,
- &pctx);
+ if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
+ ((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);
return retval;
}
* with -y, -n, or -p, only if a user isn't making up their mind.
*/
no_has_journal:
- if (!(s->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
- recover = s->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER;
+ if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
+ recover = sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER;
pctx.str = "inode";
if (fix_problem(ctx, PR_0_JOURNAL_HAS_JOURNAL, &pctx)) {
if (recover &&
!fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, &pctx))
goto no_has_journal;
- s->s_journal_inum = 0;
- e2fsck_clear_recover(ctx, recover);
+ /*
+ * Need a full fsck if we are releasing a
+ * journal stored on a reserved inode.
+ */
+ force_fsck = recover ||
+ (sb->s_journal_inum < EXT2_FIRST_INODE(sb));
+ /* Clear all of the journal fields */
+ sb->s_journal_inum = 0;
+ sb->s_journal_dev = 0;
+ memset(sb->s_journal_uuid, 0,
+ sizeof(sb->s_journal_uuid));
+ e2fsck_clear_recover(ctx, force_fsck);
} else if (!(ctx->options & E2F_OPT_READONLY)) {
- s->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL;
+ sb->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL;
ext2fs_mark_super_dirty(ctx->fs);
}
}
- if (s->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL &&
- !(s->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) &&
+ if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL &&
+ !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) &&
journal->j_superblock->s_start != 0) {
- if (fix_problem(ctx, PR_0_JOURNAL_RESET_JOURNAL, &pctx))
+ if (fix_problem(ctx, PR_0_JOURNAL_RESET_JOURNAL, &pctx)) {
reset = 1;
- /* I refuse to enable recovery for journal */
+ sb->s_state &= ~EXT2_VALID_FS;
+ ext2fs_mark_super_dirty(ctx->fs);
+ }
+ /*
+ * If the user answers no to the above question, we
+ * 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
+ * journal->j_superblock->s_start is mounted?
+ */
}
- e2fsck_journal_release(ctx, journal, reset);
+ e2fsck_journal_release(ctx, journal, reset, 0);
return retval;
}
-static int e2fsck_recover_ext3_journal(e2fsck_t ctx)
+static errcode_t recover_ext3_journal(e2fsck_t ctx)
{
- ext2_filsys fs = ctx->fs;
- io_manager io_ptr = fs->io->manager;
- int blocksize = fs->blocksize;
journal_t *journal;
int retval;
retval = e2fsck_get_journal(ctx, &journal);
if (retval)
- goto exit;
+ return retval;
+
retval = e2fsck_journal_load(journal);
if (retval)
- goto exit;
+ goto errout;
+ retval = journal_init_revoke(journal, 1024);
+ if (retval)
+ goto errout;
+
retval = -journal_recover(journal);
-
- e2fsck_journal_release(ctx, journal, 1);
if (retval)
- goto exit;
-
- /* Reload the filesystem context to get up-to-date data from disk
- * because journal recovery will change the filesystem under us.
- */
- ext2fs_close(fs);
- retval = ext2fs_open(ctx->device_name, EXT2_FLAG_RW,
- ctx->superblock, blocksize, io_ptr, &fs);
-
- if (retval) {
- com_err(ctx->program_name, retval,
- _("while trying to re-open %s"),
- ctx->device_name);
- exit(FSCK_ERROR);
+ goto errout;
+
+ if (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;
+ mark_buffer_dirty(journal->j_sb_buffer, 1);
}
- ctx->fs = fs;
- fs->priv_data = ctx;
-
- /* FIXME - In the future we will clean up the ophans here.
- * For now, we need to force a full fsck to clean them up.
- * We shouldn't have this problem in normal circumstances
- * as the kernel recovery code should save us.
- */
- if (fs->super->s_last_orphan)
- fs->super->s_state &= ~EXT2_VALID_FS;
- else
- jfs_debug(1, "no orphan inodes to clean up\n");
-
-exit:
- e2fsck_clear_recover(ctx, retval);
- ext2fs_close(ctx->fs);
+
+errout:
+ e2fsck_journal_release(ctx, journal, 1, 0);
return retval;
}
-
-#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. If that fails, we need to recover
- * the journal ourselves manually.
- */
int e2fsck_run_ext3_journal(e2fsck_t ctx)
{
-#ifdef __linux__
- ext2_filsys fs = ctx->fs;
- char *dirlist[] = {"/mnt","/lost+found","/tmp","/root","/boot",0};
- int retval = 0;
- int count = 0;
- char template[] = TEMPLATE;
- struct stat buf;
- char *tmpdir;
+ io_manager io_ptr = ctx->fs->io->manager;
+ int blocksize = ctx->fs->blocksize;
+ errcode_t retval, recover_retval;
+ printf(_("%s: recovering journal\n"), ctx->device_name);
if (ctx->options & E2F_OPT_READONLY) {
- printf("%s: won't do journal recovery while read-only\n",
+ printf(_("%s: won't do journal recovery while read-only\n"),
ctx->device_name);
return EXT2_ET_FILE_RO;
}
- /* For now, non-root users and loop devices can't use kernel recovery */
- if (geteuid()||stat(ctx->device_name, &buf)||!S_ISBLK(buf.st_mode))
- goto manual_recover;
-
- 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);
- retval = mkdir(template, 0700);
- if (retval) {
- if (errno == EROFS) {
- tmpdir = NULL;
- template[0] = '\0';
- } else if (errno == EEXIST && count++ < 10) {
- strcpy(template, TEMPLATE);
- goto newtemp;
- } else
- goto manual_recover;
- }
- }
+ if (ctx->fs->flags & EXT2_FLAG_DIRTY)
+ ext2fs_flush(ctx->fs); /* Force out any modifications */
+ recover_retval = recover_ext3_journal(ctx);
+
/*
- * OK, creating a temporary directory didn't work.
- * Let's try a list of possible temporary mountpoints.
+ * Reload the filesystem context to get up-to-date data from disk
+ * because journal recovery will change the filesystem under us.
*/
- if (!tmpdir) {
- dev_t rootdev;
- char **cpp, *dir;
-
- if (stat("/", &buf))
- goto manual_recover;
-
- rootdev = buf.st_dev;
-
- /*
- * 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 (tmpdir) {
- io_manager io_ptr = fs->io->manager;
- int blocksize = fs->blocksize;
-
- jfs_debug(2, "using %s for ext3 mount\n", tmpdir);
- ext2fs_close(fs);
- /* FIXME - need to handle loop devices here */
- retval = mount(ctx->device_name, tmpdir, "ext3", MNT_FL, NULL);
- if (retval) {
- com_err(ctx->program_name, errno,
- "when mounting %s", ctx->device_name);
- if (template[0])
- rmdir(tmpdir);
-
- retval = ext2fs_open(ctx->device_name, EXT2_FLAG_RW,
- ctx->superblock, blocksize, io_ptr,
- &fs);
-
- if (retval) {
- com_err(ctx->program_name, retval,
- _("while trying to re-open %s"),
- ctx->device_name);
- exit(FSCK_ERROR);
- }
- fs->priv_data = ctx;
- ctx->fs = fs;
- goto manual_recover;
- }
- /*
- * Now that it mounted cleanly, the filesystem will have been
- * recovered, so we can now unmount it.
- */
- retval = umount(tmpdir);
- if (retval)
- return errno;
+ ext2fs_close(ctx->fs);
+ retval = ext2fs_open(ctx->filesystem_name, EXT2_FLAG_RW,
+ ctx->superblock, blocksize, io_ptr,
+ &ctx->fs);
- /*
- * Remove the temporary directory, if it was created.
- */
- if (template[0])
- rmdir(tmpdir);
- return 0;
+ if (retval) {
+ com_err(ctx->program_name, retval,
+ _("while trying to re-open %s"),
+ ctx->device_name);
+ fatal_error(ctx, 0);
}
+ ctx->fs->priv_data = ctx;
-manual_recover:
-#endif /* __linux__ */
- return e2fsck_recover_ext3_journal(ctx);
+ /* Set the superblock flags */
+ e2fsck_clear_recover(ctx, recover_retval);
+ return recover_retval;
}
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff