Make sure the the extra_isize field (offset 128) is initialized to 0, to
mark any extra data as invalid.
Signed-off-by: Stefan Brüns <stefan.bru...@rwth-aachen.de>
Reviewed-by: Lukasz Majewski <l.majew...@samsung.com>
---
fs/ext4/ext4_write.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/fs/ext4/ext4_write.c b/fs/ext4/ext4_write.c
index 81a750b..5b518ed 100644
--- a/fs/ext4/ext4_write.c
+++ b/fs/ext4/ext4_write.c
@@ -560,7 +560,7 @@ static int ext4fs_delete_file(int inodeno)
read_buffer = read_buffer + blkoff;
inode_buffer = (struct ext2_inode *)read_buffer;
- memset(inode_buffer, '\0', sizeof(struct ext2_inode));
+ memset(inode_buffer, '\0', fs->inodesz);
/* write the inode to original position in inode table */
if (ext4fs_put_metadata(start_block_address, blkno))
@@ -866,7 +866,7 @@ int ext4fs_write(const char *fname, unsigned char *buffer,
ALLOC_CACHE_ALIGN_BUFFER(char, filename, 256);
memset(filename, 0x00, 256);
- g_parent_inode = zalloc(sizeof(struct ext2_inode));
+ g_parent_inode = zalloc(fs->inodesz);
if (!g_parent_inode)
goto fail;
@@ -969,8 +969,7 @@ int ext4fs_write(const char *fname, unsigned char *buffer,
if (ext4fs_log_journal(temp_ptr, parent_itable_blkno))
goto fail;
- memcpy(temp_ptr + blkoff, g_parent_inode,
- sizeof(struct ext2_inode));
+ memcpy(temp_ptr + blkoff, g_parent_inode, fs->inodesz);
if (ext4fs_put_metadata(temp_ptr, parent_itable_blkno))
goto fail;
} else {
@@ -978,8 +977,7 @@ int ext4fs_write(const char *fname, unsigned char *buffer,
* If parent and child fall in same inode table block
* both should be kept in 1 buffer
*/
- memcpy(temp_ptr + blkoff, g_parent_inode,
- sizeof(struct ext2_inode));
+ memcpy(temp_ptr + blkoff, g_parent_inode, fs->inodesz);
gd_index--;
if (ext4fs_put_metadata(temp_ptr, itable_blkno))
goto fail;
--
2.9.3
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