bug#24656: 25.1; Emacs leaves lock files on a CIFS share

[jsynacek@redhat.com (Jan Synáček)]

Emacs leaves lock files on a CIFS share:

1) Setup a simple samba share (/etc/samba/smb.conf):
...
[public]
 browsable = yes
 guest ok = yes
 path = <path to the share>
 read only = no

2) Mount it:
# mount -t cifs //<server>/public /mnt/tmp -o guest

3) # echo "hello emacs" > /mnt/tmp/test.txt

4) Fire up emacs -Q and start editing /mnt/tmp/test.txt. This is what I
see on my system:

# ls -la /mnt/tmp/
total 9
drwxrwxrwx+ 2 root      root       0 Oct 10 13:21 .
drwxr-xr-x. 1 root      root      20 Jul 15 10:33 ..
lrwxrwxrwx. 1 nfsnobody nfsnobody 54 Oct 10 13:21 .#test.txt -> jsynacek@jsynacek-ntb.brq.redhat.com.57671476081527
-rw-rw-rw-+ 1 jsynacek  users     10 Oct 10 13:16 test.txt

When I save the file and quit emacs, the lock file stays there. It
should be removed. Maybe it's because of the weird 0xF022 sequence in
the file name?

Originally reported at
https://bugzilla.redhat.com/show_bug.cgi?id=1271407.

-- 
Jan Synacek
Software Engineer, Red Hat