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authorSalah Triki <salah.triki@gmail.com>2016-08-09 16:46:04 +0300
committerLuis de Bethencourt <luisbg@osg.samsung.com>2016-10-08 12:01:27 +0300
commit6ea4558f9b373b588162e5d3523bc65fcf669b06 (patch)
tree18fe35d58b8a866a664feda907db2e107bb1ef4c /fs/befs
parentbb75e66627b28816f472183d5dce0784d5edb87f (diff)
downloadlinux-6ea4558f9b373b588162e5d3523bc65fcf669b06.tar.xz
befs: add flags field to validate superblock state
For validating superblock state, add flags field to befs_sb_info, read the state from the disk and check if it is equal to BEFS_DIRTY. Signed-off-by: Salah Triki <salah.triki@gmail.com> Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Diffstat (limited to 'fs/befs')
-rw-r--r--fs/befs/befs.h3
-rw-r--r--fs/befs/super.c4
2 files changed, 6 insertions, 1 deletions
diff --git a/fs/befs/befs.h b/fs/befs/befs.h
index a8ca7fcf0795..af8ea961e88f 100644
--- a/fs/befs/befs.h
+++ b/fs/befs/befs.h
@@ -43,6 +43,9 @@ struct befs_sb_info {
u32 ag_shift;
u32 num_ags;
+ /* State of the superblock */
+ u32 flags;
+
/* jornal log entry */
befs_block_run log_blocks;
befs_off_t log_start;
diff --git a/fs/befs/super.c b/fs/befs/super.c
index 9d1b56cd6f19..dc13df8de3e8 100644
--- a/fs/befs/super.c
+++ b/fs/befs/super.c
@@ -45,6 +45,8 @@ befs_load_sb(struct super_block *sb, befs_super_block * disk_sb)
befs_sb->ag_shift = fs32_to_cpu(sb, disk_sb->ag_shift);
befs_sb->num_ags = fs32_to_cpu(sb, disk_sb->num_ags);
+ befs_sb->flags = fs32_to_cpu(sb, disk_sb->flags);
+
befs_sb->log_blocks = fsrun_to_cpu(sb, disk_sb->log_blocks);
befs_sb->log_start = fs64_to_cpu(sb, disk_sb->log_start);
befs_sb->log_end = fs64_to_cpu(sb, disk_sb->log_end);
@@ -101,7 +103,7 @@ befs_check_sb(struct super_block *sb)
return BEFS_ERR;
}
- if (befs_sb->log_start != befs_sb->log_end) {
+ if (befs_sb->log_start != befs_sb->log_end || befs_sb->flags == BEFS_DIRTY) {
befs_error(sb, "Filesystem not clean! There are blocks in the "
"journal. You must boot into BeOS and mount this volume "
"to make it clean.");