u-boot does not supports updating the metadata chacksums
Signed-off-by: Jean-Jacques Hiblot jjhiblot@ti.com Reviewed-by: Tom Rini trini@konsulko.com
---
Changes in v4: None Changes in v3: None Changes in v2: - Prevent write access if metadata checksum is enabled
fs/ext4/ext4_write.c | 12 ++++++++++-- include/ext4fs.h | 1 + 2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/fs/ext4/ext4_write.c b/fs/ext4/ext4_write.c index a7f543f7df..1de29236f0 100644 --- a/fs/ext4/ext4_write.c +++ b/fs/ext4/ext4_write.c @@ -858,12 +858,19 @@ int ext4fs_write(const char *fname, unsigned char *buffer,
g_parent_inode = zalloc(fs->inodesz); if (!g_parent_inode) - goto fail; + goto fail_ext4fs_init;
if (ext4fs_init() != 0) { printf("error in File System init\n"); - return -1; + goto fail_ext4fs_init; + } + + if (le32_to_cpu(fs->sb->feature_ro_compat) & + EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) { + printf("u-boot doesn't support updating the metadata checksums yet\n"); + goto fail; } + inodes_per_block = fs->blksz / fs->inodesz; parent_inodeno = ext4fs_get_parent_inode_num(fname, filename, F_FILE); if (parent_inodeno == -1) @@ -990,6 +997,7 @@ int ext4fs_write(const char *fname, unsigned char *buffer, return 0; fail: ext4fs_deinit(); +fail_ext4fs_init: free(inode_buffer); free(g_parent_inode); free(temp_ptr); diff --git a/include/ext4fs.h b/include/ext4fs.h index bb55639107..bcf440364e 100644 --- a/include/ext4fs.h +++ b/include/ext4fs.h @@ -32,6 +32,7 @@ #define EXT4_EXTENTS_FL 0x00080000 /* Inode uses extents */ #define EXT4_EXT_MAGIC 0xf30a #define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010 +#define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400 #define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040 #define EXT4_FEATURE_INCOMPAT_64BIT 0x0080 #define EXT4_INDIRECT_BLOCKS 12