[Samba] Re: locking.tdb: expand_file ftruncate to 8192 failed (Permission denied)

Axel Thimm Axel.Thimm at ATrpms.net
Wed Sep 21 23:09:30 GMT 2005

On Wed, Sep 21, 2005 at 03:52:42PM -0700, Jeremy Allison wrote:
> On Thu, Sep 22, 2005 at 12:47:08AM +0200, Axel Thimm wrote:
> > I tested it and it runs successfully.

I'll have to take that back. I tested it on a file on the system disk,
I should had tested this on the filesystem the "lock directory" is on
(see below).

> > Is there a chance that the fd isn't opened by root in
> > set_delete_on_close?
> I can't see a way this can happen. The locking tdb is only
> opened by locking_init() which is called at line 879 in
> smbd/server.c - we are very much root at this time.

The outcome of the test code you sent segfaults now.

# mount | grep gfs
/dev/mapper/physik-data on /srv/physik.fu-berlin.de/data type gfs
# pwd
# ls -l
total 32
-rwxr-xr-x  1 root root 10080 Sep 22 00:38 a.out
-rw-------  1 root root  1231 Sep 22 00:35 test.c
-rw-r--r--  1 root root     0 Sep 22 01:07 testfile
# ./a.out testfile thimm
Segmentation fault
Axel.Thimm at ATrpms.net
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