tree 86ad2a4b8d7d39076c0df8789040ae0bc82287bf
parent c41570c9d29764f797fa35490d72b7395a0105c3
author Filipe David Borba Manana <fdmanana@gmail.com> 1390347398 +0000
committer Chris Mason <clm@fb.com> 1390944043 -0800

Btrfs: fix snprintf usage by send's gen_unique_name

The buffer size argument passed to snprintf must account for the
trailing null byte added by snprintf, and it returns a value >= then
sizeof(buffer) when the string can't fit in the buffer.

Since our buffer has a size of 64 characters, and the maximum orphan
name we can generate is 63 characters wide, we must pass 64 as the
buffer size to snprintf, and not 63.

Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>