Patchwork [33/36,v4] e2fsck: check inline data in pass2

login
register
mail settings
Submitter Zheng Liu
Date July 31, 2012, 11:48 a.m.
Message ID <1343735309-30579-34-git-send-email-wenqing.lz@taobao.com>
Download mbox | patch
Permalink /patch/174250/
State Superseded
Headers show

Comments

Zheng Liu - July 31, 2012, 11:48 a.m.
From: Zheng Liu <wenqing.lz@taobao.com>

Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
---
 e2fsck/pass2.c           |   64 +++++++++++++++++++++++++++++++++++++--------
 lib/ext2fs/inline_data.c |    4 +-
 2 files changed, 54 insertions(+), 14 deletions(-)

Patch

diff --git a/e2fsck/pass2.c b/e2fsck/pass2.c
index e28af61..7267409 100644
--- a/e2fsck/pass2.c
+++ b/e2fsck/pass2.c
@@ -725,6 +725,15 @@  static void salvage_directory(ext2_filsys fs,
 	}
 }
 
+static int is_last_entry(ext2_filsys fs, ext2_ino_t ino, unsigned int offset,
+			 int csum_size)
+{
+	if (ext2fs_has_inline_data(fs, ino))
+		return (offset < ext2fs_inline_data_size(fs, ino));
+	else
+		return (offset < fs->blocksize - csum_size);
+}
+
 static int check_dir_block(ext2_filsys fs,
 			   struct ext2_db_entry2 *db,
 			   void *priv_data)
@@ -734,6 +743,7 @@  static int check_dir_block(ext2_filsys fs,
 	struct dx_dirblock_info	*dx_db = 0;
 #endif /* ENABLE_HTREE */
 	struct ext2_dir_entry 	*dirent, *prev;
+	struct ext2_inode	inode;
 	ext2_dirhash_t		hash;
 	unsigned int		offset = 0;
 	int			dir_modified = 0;
@@ -756,6 +766,7 @@  static int check_dir_block(ext2_filsys fs,
 	int	dx_csum_size = 0, de_csum_size = 0;
 	int	failed_csum = 0;
 	int	is_leaf = 1;
+	int	has_inline_data = 0;
 
 	cd = (struct check_dir_struct *) priv_data;
 	buf = cd->buf;
@@ -787,7 +798,8 @@  static int check_dir_block(ext2_filsys fs,
 	cd->pctx.dirent = 0;
 	cd->pctx.num = 0;
 
-	if (db->blk == 0) {
+	/* We don't need to allocate dir blocks for inline_data dir */
+	if (db->blk == 0 && !ext2fs_has_inline_data(fs, db->ino)) {
 		if (allocate_dir_block(ctx, db, buf, &cd->pctx))
 			return 0;
 		block_nr = db->blk;
@@ -808,7 +820,20 @@  static int check_dir_block(ext2_filsys fs,
 #endif
 
 	ehandler_operation(_("reading directory block"));
-	cd->pctx.errcode = ext2fs_read_dir_block4(fs, block_nr, buf, 0, ino);
+	ext2fs_read_inode(fs, ino, &inode);
+
+	if (EXT2_HAS_INCOMPAT_FEATURE(fs->super,
+				      EXT4_FEATURE_INCOMPAT_INLINE_DATA))
+		has_inline_data = (inode.i_flags & EXT4_INLINE_DATA_FL);
+
+	if (has_inline_data) {
+		cd->pctx.errcode = ext2fs_read_dir_inline_data(fs, ino, buf);
+		if (!cd->pctx.errcode)
+			cd->pctx.errcode = ext2fs_read_dir_inline_data_more(fs,
+								ino, buf);
+	} else
+		cd->pctx.errcode = ext2fs_read_dir_block4(fs, block_nr, buf,
+							  0, ino);
 	ehandler_operation(0);
 	if (cd->pctx.errcode == EXT2_ET_DIR_CORRUPTED)
 		cd->pctx.errcode = 0; /* We'll handle this ourselves */
@@ -879,7 +904,7 @@  out_htree:
 #endif /* ENABLE_HTREE */
 
 	/* Verify checksum. */
-	if (is_leaf && de_csum_size) {
+	if (is_leaf && de_csum_size && !has_inline_data) {
 		/* No space for csum?  Rebuild dirs in pass 3A. */
 		if (!ext2fs_dirent_has_tail(fs, (struct ext2_dir_entry *)buf)) {
 			de_csum_size = 0;
@@ -1173,7 +1198,7 @@  skip_checksum:
 			(void) ext2fs_get_rec_len(fs, dirent, &rec_len);
 		offset += rec_len;
 		dot_state++;
-	} while (offset < fs->blocksize - de_csum_size);
+	} while (is_last_entry(fs, ino, offset, de_csum_size));
 #if 0
 	printf("\n");
 #endif
@@ -1191,12 +1216,24 @@  skip_checksum:
 	}
 #endif /* ENABLE_HTREE */
 
-	if (offset != fs->blocksize - de_csum_size) {
-		cd->pctx.num = rec_len - (fs->blocksize - de_csum_size) +
-			       offset;
-		if (fix_problem(ctx, PR_2_FINAL_RECLEN, &cd->pctx)) {
-			dirent->rec_len = cd->pctx.num;
-			dir_modified++;
+	if (!has_inline_data) {
+		if (offset != fs->blocksize - de_csum_size) {
+			cd->pctx.num = rec_len -
+				(fs->blocksize - de_csum_size) +
+				offset;
+			if (fix_problem(ctx, PR_2_FINAL_RECLEN, &cd->pctx)) {
+				dirent->rec_len = cd->pctx.num;
+				dir_modified++;
+			}
+		}
+	} else {
+		if (offset != ext2fs_inline_data_size(fs, ino)) {
+			cd->pctx.num = rec_len + offset -
+				ext2fs_inline_data_size(fs, ino);
+			if (fix_problem(ctx, PR_2_FINAL_RECLEN, &cd->pctx)) {
+				dirent->rec_len = cd->pctx.num;
+				dir_modified++;
+			}
 		}
 	}
 	if (dir_modified) {
@@ -1210,8 +1247,11 @@  skip_checksum:
 write_and_fix:
 		if (e2fsck_dir_will_be_rehashed(ctx, ino))
 			ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
-		cd->pctx.errcode = ext2fs_write_dir_block4(fs, block_nr, buf,
-							   0, ino);
+		if (inode.i_flags & EXT4_INLINE_DATA_FL)
+			cd->pctx.errcode = ext2fs_write_dir_inline_data(fs, ino, buf);
+		else
+			cd->pctx.errcode = ext2fs_write_dir_block4(fs,
+							block_nr, buf, 0, ino);
 		if (e2fsck_dir_will_be_rehashed(ctx, ino))
 			ctx->fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
 		if (cd->pctx.errcode) {
diff --git a/lib/ext2fs/inline_data.c b/lib/ext2fs/inline_data.c
index 59483a6..3adab3c 100644
--- a/lib/ext2fs/inline_data.c
+++ b/lib/ext2fs/inline_data.c
@@ -575,7 +575,7 @@  int ext2fs_inline_data_in_extra(ext2_filsys fs, ext2_ino_t ino)
 	ext2fs_get_mem(EXT2_INODE_SIZE(fs->super), &inode);
 	ext2fs_read_inode_full(fs, ino, inode, EXT2_INODE_SIZE(fs->super));
 
-	ext2fs_iget_extra_inode(fs, inode, &idata);
+	ext2fs_iget_extra_inode(fs, (void *)inode, &idata);
 	ext2fs_free_mem(&inode);
 	if (idata.inline_off == 0 ||
 	    idata.inline_size == EXT4_MIN_INLINE_DATA_SIZE)
@@ -592,7 +592,7 @@  int ext2fs_inline_data_size(ext2_filsys fs, ext2_ino_t ino)
 	inode = (struct ext2_inode *) malloc(EXT2_INODE_SIZE(fs->super));
 	ext2fs_read_inode_full(fs, ino, inode, EXT2_INODE_SIZE(fs->super));
 
-	ext2fs_iget_extra_inode(fs, inode, &idata);
+	ext2fs_iget_extra_inode(fs, (void *)inode, &idata);
 	free(inode);
 	if (idata.inline_off == 0)
 		return 0;