Am Montag, 27. Januar 2014, 14:28:28 schrieb Gerhard Heift: > To prevent unexpectet values in the unused fields of the search key fail unexpected > early. Otherwise future extensions would break the behavior of the search > if current implementations in userspace set them to values other than zero. > > Signed-off-by: Gerhard Heift <Gerhard@xxxxxxxxxx> > --- > fs/btrfs/ioctl.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c > index be4c780..919d928 100644 > --- a/fs/btrfs/ioctl.c > +++ b/fs/btrfs/ioctl.c > @@ -1947,6 +1947,9 @@ static noinline int search_ioctl(struct inode *inode, > if (buf_size < sizeof(struct btrfs_ioctl_search_header)) > return -EOVERFLOW; > > + if (sk->unused || sk->unused1 | sk->unused2 | sk->unused3 | sk->unused4) > + return -EINVAL; > + > path = btrfs_alloc_path(); > if (!path) > return -ENOMEM; -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
