Re: [PATCH 00/18] Consolidate Posix ACL implementation

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

On Thu, Dec 05, 2013 at 06:57:14PM +0100, Andreas Gruenbacher wrote:
> I see that get_acl and set_acl are being defined in some but not all symlink 
> inode operations (for example, btrfs them while ext4 does not), and that 
> posix_acl_xattr_set() doesn't check if set_acl is defined.  Symlinks cannot 
> have ACLs, so set_acl should either never be defined for symlinks (and a NULL 
> check is then needed in posix_acl_xattr_set()), or it is defined in all inode 
> operations, and S_ISNLNK() check is needed in posix_acl_xattr_set().  That 
> latter check should probably be added in any case to be on the safe side.

Yes, we should add the check.  We also in general should not have
set_acl/get_acl on links and I'll look over it.

> Patch 6 also declares posix_acl_prepare() but this function is never 
> introduced; this must be a leftover from a previous version.

Indeed.

Thanks for the review!