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fs: ext4: check the minimal partition size to mount

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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>
This commit is contained in:
Patrick Delaunay 2023-03-08 09:49:54 +01:00 committed by Tom Rini
parent a6992bf40d
commit 9905cae65e
1 changed files with 4 additions and 0 deletions
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4
fs/ext4/ext4_common.c
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@ -2373,6 +2373,10 @@ int ext4fs_mount(unsigned part_length)
struct ext2_data *data; struct ext2_data *data;
int status; int status;
struct ext_filesystem *fs = get_fs(); struct ext_filesystem *fs = get_fs();
if (part_length < SUPERBLOCK_SIZE)
return 0;
data = zalloc(SUPERBLOCK_SIZE); data = zalloc(SUPERBLOCK_SIZE);
if (!data) if (!data)
return 0; return 0;