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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>
This commit is contained in:
Salah Triki 2016-08-09 14:46:04 +01:00 committed by Luis de Bethencourt
parent bb75e66627
commit 6ea4558f9b
2 changed files with 6 additions and 1 deletions
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3
fs/befs/befs.h
View File

@ -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;

4
fs/befs/super.c
View File

@ -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.");