diff options
Diffstat (limited to 'kernel/fs/xfs/xfs_acl.c')
| -rw-r--r-- | kernel/fs/xfs/xfs_acl.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/kernel/fs/xfs/xfs_acl.c b/kernel/fs/xfs/xfs_acl.c index 4b641676f..6bb470fbb 100644 --- a/kernel/fs/xfs/xfs_acl.c +++ b/kernel/fs/xfs/xfs_acl.c @@ -37,16 +37,19 @@ STATIC struct posix_acl * xfs_acl_from_disk( - struct xfs_acl *aclp, - int max_entries) + const struct xfs_acl *aclp, + int len, + int max_entries) { struct posix_acl_entry *acl_e; struct posix_acl *acl; - struct xfs_acl_entry *ace; + const struct xfs_acl_entry *ace; unsigned int count, i; + if (len < sizeof(*aclp)) + return ERR_PTR(-EFSCORRUPTED); count = be32_to_cpu(aclp->acl_cnt); - if (count > max_entries) + if (count > max_entries || XFS_ACL_SIZE(count) != len) return ERR_PTR(-EFSCORRUPTED); acl = posix_acl_alloc(count, GFP_KERNEL); @@ -160,10 +163,11 @@ xfs_get_acl(struct inode *inode, int type) */ if (error == -ENOATTR) goto out_update_cache; + acl = ERR_PTR(error); goto out; } - acl = xfs_acl_from_disk(xfs_acl, XFS_ACL_MAX_ENTRIES(ip->i_mount)); + acl = xfs_acl_from_disk(xfs_acl, len, XFS_ACL_MAX_ENTRIES(ip->i_mount)); if (IS_ERR(acl)) goto out; |