Samba 4.17.0rc3 opens via vfs_glusterfs fail

[Jeremy Allison]

On Mon, Aug 29, 2022 at 03:36:21PM -0400, Andrew Walker via samba-technical wrote:
>```
>[2022/08/27 14:48:25.748586,  0]
>../../source3/smbd/files.c:1187(synthetic_pathref)
>  synthetic_pathref: opening [.] failed
>```
>
>Seeing this on trying to connect to share. Looks like we're trying to
>glfs_open() <connectpath>/. with flags (O_RDONLY | O_NOFOLLOW |
>O_NONBLOCK), and it fails with EISDIR.
>
>Following patch fixes the issue (i.e. on EISDIR reattempting open via
>glfs_opendir()).
>Has anyone else seen this issue?
>
>```
>diff --git a/source3/modules/vfs_glusterfs.c
>b/source3/modules/vfs_glusterfs.c
>index dd05da0f9bb..22762a8703f 100644
>--- a/source3/modules/vfs_glusterfs.c
>+++ b/source3/modules/vfs_glusterfs.c
>@@ -822,6 +822,11 @@ static int vfs_gluster_openat(struct vfs_handle_struct
>*handle,
>                                 how->flags);
>        }
>
>+       if ((glfd == NULL) && (errno = EISDIR) &&
>+           (how->flags == O_NONBLOCK | O_NOFOLLOW)) {
>+               glfd = glfs_opendir(handle->data, smb_fname->base_name);
>+       }
>+
>        if (became_root) {
>                unbecome_root();
>        }

Can you re-test with the latest glusterfs fixes that
just got added to ?

https://bugzilla.samba.org/show_bug.cgi?id=15157

If it's stull a problem, can you coordinate with
Anoop C S <anoopcs at samba.org> who is working on
4.17.rcNext with glusterfs.

Thanks ! Jeremy.