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fs:ext4:write: Initialize cache aligned filename buffer 

The filename buffer is allocated dynamically. It must be cache aligned.
Moreover, it is necessary to erase its content before we use it for
file name operations.

This prevents from corruption of written file names.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
This commit is contained in:
Łukasz Majewski 2012-12-05 08:06:40 +00:00 committed by Tom Rini
parent d429ca0d83
commit 13d43555a9
1 changed files with 3 additions and 2 deletions
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5
fs/ext4/ext4fs.c
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@ -1011,8 +1011,6 @@ int ext4fs_write(const char *fname, unsigned char *buffer,
unsigned int blks_reqd_for_file;
unsigned int blocks_remaining;
int existing_file_inodeno;
char filename[256];
char *temp_ptr = NULL;
long int itable_blkno;
long int parent_itable_blkno;
@ -1021,6 +1019,9 @@ int ext4fs_write(const char *fname, unsigned char *buffer,
unsigned int inodes_per_block;
unsigned int ibmap_idx;
struct ext_filesystem *fs = get_fs();
ALLOC_CACHE_ALIGN_BUFFER(char, filename, 256);
memset(filename, 0x00, sizeof(filename));
g_parent_inode = zalloc(sizeof(struct ext2_inode));
if (!g_parent_inode)
goto fail;