On Wed, Jun 18, 2014 at 07:35:27AM -0400, Trond Myklebust wrote:
> Hi Christoph,
>
> On Wed, Jun 18, 2014 at 5:07 AM, Christoph Hellwig <hch@xxxxxx> wrote:
> > The big ACL switched nfs to use generic_listxattr, which calls all existing
> > ->list handlers. Add a custom .listxattr implementation that only lists
> > the ACLs if they actually are present on the given inode.
> >
> > Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> > Reported-by: Philippe Troin <phil@xxxxxxxx>
> > Tested-by: Philippe Troin <phil@xxxxxxxx>
> > ---
> > fs/nfs/nfs3acl.c | 43 +++++++++++++++++++++++++++++++++++++++++++
> > fs/nfs/nfs3proc.c | 4 ++--
> > 2 files changed, 45 insertions(+), 2 deletions(-)
> >
> > diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c
> > index 871d6ed..8f854dd 100644
> > --- a/fs/nfs/nfs3acl.c
> > +++ b/fs/nfs/nfs3acl.c
> > @@ -247,3 +247,46 @@ const struct xattr_handler *nfs3_xattr_handlers[] = {
> > &posix_acl_default_xattr_handler,
> > NULL,
> > };
> > +
> > +static int
> > +nfs3_list_one_acl(struct inode *inode, int type, const char *name, void *data,
> > + size_t size, ssize_t *result)
>
> Why do you make 'result' a pointer to ssize_t rather than a size_t here?
Because ->listxattr returns a ssize_t, and it points to the variable used
as return value of nfs3_listxattr.
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