fs: ext4: check the minimal partition size to mount
No need to mount a too small partition to handle a EXT4 file system.
This patch add a test on partition size before to read the
SUPERBLOCK_SIZE buffer and avoid error latter in fs_devread() function.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
diff --git a/fs/ext4/ext4_common.c b/fs/ext4/ext4_common.c
index f50de7c..9a9c520 100644
--- a/fs/ext4/ext4_common.c
+++ b/fs/ext4/ext4_common.c
@@ -2373,6 +2373,10 @@
struct ext2_data *data;
int status;
struct ext_filesystem *fs = get_fs();
+
+ if (part_length < SUPERBLOCK_SIZE)
+ return 0;
+
data = zalloc(SUPERBLOCK_SIZE);
if (!data)
return 0;