| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20220804095618.887684-3-alexey.lyashkov@gmail.com>
Date: Thu, 4 Aug 2022 12:56:16 +0300
From: Alexey Lyashkov <alexey.lyashkov@...il.com>
To: linux-ext4@...r.kernel.org, Theodore Ts'o <tytso@....edu>,
Andreas Dilger <adilger@...ger.ca>,
Artem Blagodarenko <artem.blagodarenko@...il.com>
Cc: Alexey Lyashkov <alexey.lyashkov@...il.com>
Subject: [PATCH 3/5] kill a ctx->journal_io
replace a e2fsck own code, with generic one to use
an fs->journal_io.
---
debugfs/journal.c | 34 ---------------------------
e2fsck/e2fsck.c | 6 +----
e2fsck/e2fsck.h | 1 -
e2fsck/journal.c | 53 +++++++-----------------------------------
lib/support/jfs_user.c | 39 +++++++++++++++++++++++++++++++
lib/support/jfs_user.h | 2 ++
6 files changed, 50 insertions(+), 85 deletions(-)
diff --git a/debugfs/journal.c b/debugfs/journal.c
index dac17800..202312fe 100644
--- a/debugfs/journal.c
+++ b/debugfs/journal.c
@@ -590,40 +590,6 @@ static errcode_t ext2fs_journal_load(journal_t *journal)
return 0;
}
-static void ext2fs_journal_release(ext2_filsys fs, journal_t *journal,
- int reset, int drop)
-{
- journal_superblock_t *jsb;
-
- if (drop)
- mark_buffer_clean(journal->j_sb_buffer);
- else if (fs->flags & EXT2_FLAG_RW) {
- jsb = journal->j_superblock;
- jsb->s_sequence = htonl(journal->j_tail_sequence);
- if (reset)
- jsb->s_start = 0; /* this marks the journal as empty */
- ext2fs_journal_sb_csum_set(journal, jsb);
- mark_buffer_dirty(journal->j_sb_buffer);
- }
- brelse(journal->j_sb_buffer);
-
- if (fs && fs->journal_io) {
- if (fs->io != fs->journal_io)
- io_channel_close(fs->journal_io);
- fs->journal_io = NULL;
- free(fs->journal_name);
- fs->journal_name = NULL;
- }
-
-#ifndef USE_INODE_IO
- if (journal->j_inode)
- 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.
diff --git a/e2fsck/e2fsck.c b/e2fsck/e2fsck.c
index 1e295e3e..421ef4a9 100644
--- a/e2fsck/e2fsck.c
+++ b/e2fsck/e2fsck.c
@@ -83,11 +83,7 @@ errcode_t e2fsck_reset_context(e2fsck_t ctx)
ext2fs_free_icount(ctx->inode_link_info);
ctx->inode_link_info = 0;
}
- if (ctx->journal_io) {
- if (ctx->fs && ctx->fs->io != ctx->journal_io)
- io_channel_close(ctx->journal_io);
- ctx->journal_io = 0;
- }
+
if (ctx->fs && ctx->fs->dblist) {
ext2fs_free_dblist(ctx->fs->dblist);
ctx->fs->dblist = 0;
diff --git a/e2fsck/e2fsck.h b/e2fsck/e2fsck.h
index 2db216f5..33334781 100644
--- a/e2fsck/e2fsck.h
+++ b/e2fsck/e2fsck.h
@@ -380,7 +380,6 @@ struct e2fsck_struct {
/*
* ext3 journal support
*/
- io_channel journal_io;
char *journal_name;
/*
diff --git a/e2fsck/journal.c b/e2fsck/journal.c
index 46a9bcb7..682d82a4 100644
--- a/e2fsck/journal.c
+++ b/e2fsck/journal.c
@@ -86,7 +86,7 @@ struct buffer_head *getblk(kdev_t kdev, unsigned long long blocknr,
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_io = kdev->k_ctx->fs->journal_io;
bh->b_size = blocksize;
bh->b_blocknr = blocknr;
@@ -100,7 +100,7 @@ int sync_blockdev(kdev_t kdev)
if (kdev->k_dev == K_DEV_FS)
io = kdev->k_ctx->fs->io;
else
- io = kdev->k_ctx->journal_io;
+ io = kdev->k_ctx->fs->journal_io;
return io_channel_flush(io) ? -EIO : 0;
}
@@ -156,11 +156,6 @@ void mark_buffer_dirty(struct buffer_head *bh)
bh->b_dirty = 1;
}
-static void mark_buffer_clean(struct buffer_head * bh)
-{
- bh->b_dirty = 0;
-}
-
void brelse(struct buffer_head *bh)
{
if (bh->b_dirty)
@@ -1011,7 +1006,7 @@ static errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **ret_journal)
io_ptr = inode_io_manager;
#else
journal->j_inode = j_inode;
- ctx->journal_io = ctx->fs->io;
+ ctx->fs->journal_io = ctx->fs->io;
if ((ret = jbd2_journal_bmap(journal, 0, &start)) != 0) {
retval = (errcode_t) (-1 * ret);
goto errout;
@@ -1058,12 +1053,12 @@ static errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **ret_journal)
retval = io_ptr->open(journal_name, flags,
- &ctx->journal_io);
+ &ctx->fs->journal_io);
}
if (retval)
goto errout;
- io_channel_set_blksize(ctx->journal_io, ctx->fs->blocksize);
+ io_channel_set_blksize(ctx->fs->journal_io, ctx->fs->blocksize);
if (ext_journal) {
blk64_t maxlen;
@@ -1397,38 +1392,6 @@ static errcode_t e2fsck_journal_fix_corrupt_super(e2fsck_t ctx,
return 0;
}
-static void e2fsck_journal_release(e2fsck_t ctx, journal_t *journal,
- int reset, int drop)
-{
- journal_superblock_t *jsb;
-
- 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_tail_sequence);
- if (reset)
- jsb->s_start = 0; /* this marks the journal as empty */
- ext2fs_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(&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.
@@ -1475,7 +1438,7 @@ errcode_t e2fsck_check_ext3_journal(e2fsck_t ctx)
(!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);
+ ext2fs_journal_release(ctx->fs, journal, 0, 1);
return retval;
}
@@ -1556,7 +1519,7 @@ no_has_journal:
mark_buffer_dirty(journal->j_sb_buffer);
}
- e2fsck_journal_release(ctx, journal, reset, 0);
+ ext2fs_journal_release(ctx->fs, journal, reset, 0);
return retval;
}
@@ -1605,7 +1568,7 @@ errout:
jbd2_journal_destroy_revoke(journal);
jbd2_journal_destroy_revoke_record_cache();
jbd2_journal_destroy_revoke_table_cache();
- e2fsck_journal_release(ctx, journal, 1, 0);
+ ext2fs_journal_release(ctx->fs, journal, 1, 0);
return retval;
}
diff --git a/lib/support/jfs_user.c b/lib/support/jfs_user.c
index 4ff1b5c1..d8a2f842 100644
--- a/lib/support/jfs_user.c
+++ b/lib/support/jfs_user.c
@@ -60,3 +60,42 @@ errcode_t ext2fs_journal_sb_csum_set(journal_t *j,
return 0;
}
+
+static void mark_buffer_clean(struct buffer_head * bh)
+{
+ bh->b_dirty = 0;
+}
+
+void ext2fs_journal_release(ext2_filsys fs, journal_t *journal,
+ int reset, int drop)
+{
+ journal_superblock_t *jsb;
+
+ if (drop)
+ mark_buffer_clean(journal->j_sb_buffer);
+ else if (fs->flags & EXT2_FLAG_RW) {
+ jsb = journal->j_superblock;
+ jsb->s_sequence = htonl(journal->j_tail_sequence);
+ if (reset)
+ jsb->s_start = 0; /* this marks the journal as empty */
+ ext2fs_journal_sb_csum_set(journal, jsb);
+ mark_buffer_dirty(journal->j_sb_buffer);
+ }
+ brelse(journal->j_sb_buffer);
+
+ if (fs && fs->journal_io) {
+ if (fs->io != fs->journal_io)
+ io_channel_close(fs->journal_io);
+ fs->journal_io = NULL;
+ free(fs->journal_name);
+ fs->journal_name = NULL;
+ }
+
+#ifndef USE_INODE_IO
+ if (journal->j_inode)
+ ext2fs_free_mem(&journal->j_inode);
+#endif
+ if (journal->j_fs_dev)
+ ext2fs_free_mem(&journal->j_fs_dev);
+ ext2fs_free_mem(&journal);
+}
diff --git a/lib/support/jfs_user.h b/lib/support/jfs_user.h
index 8bdbf85b..b9c2fa54 100644
--- a/lib/support/jfs_user.h
+++ b/lib/support/jfs_user.h
@@ -217,6 +217,8 @@ int ext2fs_journal_verify_csum_type(journal_t *j, journal_superblock_t *jsb);
__u32 ext2fs_journal_sb_csum(journal_superblock_t *jsb);
int ext2fs_journal_sb_csum_verify(journal_t *j, journal_superblock_t *jsb);
errcode_t ext2fs_journal_sb_csum_set(journal_t *j, journal_superblock_t *jsb);
+void ext2fs_journal_release(ext2_filsys fs, journal_t *journal, int reset,
+ int drop);
/*
* Kernel compatibility functions are defined in journal.c
--
2.31.1
Powered by blists - more mailing lists