* Don't check argument of free(). Free does this itself. * Reduce scope of data_buffer. Remove duplicate free(). * Avoid superfluous NULL assignment.
Signed-off-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com --- fs/squashfs/sqfs.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/fs/squashfs/sqfs.c b/fs/squashfs/sqfs.c index 5d9c52af80..b07c41e911 100644 --- a/fs/squashfs/sqfs.c +++ b/fs/squashfs/sqfs.c @@ -1310,7 +1310,7 @@ static int sqfs_get_lregfile_info(struct squashfs_lreg_inode *lreg, int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len, loff_t *actread) { - char *dir = NULL, *fragment_block, *datablock = NULL, *data_buffer = NULL; + char *dir = NULL, *fragment_block, *datablock = NULL; char *fragment = NULL, *file = NULL, *resolved, *data; u64 start, n_blks, table_size, data_offset, table_offset, sparse_size; int ret, j, i_number, datablk_count = 0; @@ -1440,6 +1440,8 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len, }
for (j = 0; j < datablk_count; j++) { + char *data_buffer; + start = data_offset / ctxt.cur_dev->blksz; table_size = SQFS_BLOCK_SIZE(finfo.blk_sizes[j]); table_offset = data_offset - (start * ctxt.cur_dev->blksz); @@ -1501,9 +1503,7 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len, }
data_offset += table_size; - if (data_buffer) - free(data_buffer); - data_buffer = NULL; + free(data_buffer); if (*actread >= len) break; } @@ -1563,10 +1563,7 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
out: free(fragment); - if (datablk_count) { - free(data_buffer); - free(datablock); - } + free(datablock); free(file); free(dir); free(finfo.blk_sizes);