[Samba] Re: files being blanked by writing
joines at bus.okstate.edu
Fri Sep 24 22:11:20 GMT 2004
Jason Joines wrote:
> I'm running Samba 2.2.8a on SuSE Linux 8.1 with kernel 2.4.19. I
> have a share defined by this on a web server to allow members of the
> jamigos group to edit web pages.
> comment = User Web Pages
> path = /home
> valid users = @jamigos
> read only = No
> create mask = 0664
> force create mode = 0664
> directory mask = 0775
> force directory mode = 0775
> browseable = No
> I received a few complaints of save errors followed by missing web
> pages so I decided to check it out. Via this share, I opened the file
> /home/wasdnord/public_html/4133/1RIGHT.HTM with Mozilla. Here were the
> permissions at the filesystem level ahead of time. The group jamigos is
> one of my supplementary groups.
> drwxrwsr-x+ 2 wasdnord jamigos 104 Sep 21 11:38 ../4133 and
> stat shows permissions of 2775.
> -rw-rw-r--+ 1 wasdnord jamigos 2334 Oct 16 2003 1RIGHT.HTM
> and stat shows 0664.
> I made a small change, added a word to the bottom of the file, and
> tried to save it. This gave me the rather generic error of "Saving File
> failed!" via Mozilla Composer. I looked at the file on the server to
> see this:
> -rw-rw-r--+ 1 wasdnord jamigos 0 Sep 21 12:00 1RIGHT.HTM
> What was being reported to me as missing pages was actually files
> having their contents erased.
> I deleted the file and saved again, this time with no problems
> -rw-rw-r--+ 1 joines jamigos 2626 Sep 21 12:19 1RIGHT.HTM.
> It's not an issue of file permissions as I can make the changes with
> vi directly on the filesystme with no problem. It's not an editor issue
> as I tried both Mozilla and Kate on Linux whereas the problems reported
> to me were with a wide variety of editors including frontpage on
> windows. Once I own the file, it all works as expected.
> Just before trying this I turned the log level up to 3 and here's
> what I got:
> [2004/09/21 11:59:43, 3] smbd/dosmode.c:unix_mode(111)
> unix_mode(wasdnord/public_html/4133/1RIGHT.HTM) returning 0664
> [2004/09/21 11:59:43, 3]
> linux_set_kernel_oplock: got kernel oplock on file
> wasdnord/public_html/4133/1RIGHT.HTM, dev = 805, inode = 8439294,
> file_id = 435
> [2004/09/21 11:59:43, 2] smbd/open.c:open_file(247) joines opened file
> wasdnord/public_html/dnor.jpg read=Yes write=No (numopen=1)
> [2004/09/21 12:00:02, 2] smbd/open.c:open_file(247) joines opened file
> wasdnord/public_html/4133/1RIGHT.HTM read=Yes write=Yes (numopen=1)
> [2004/09/21 12:00:02, 3] smbd/trans2.c:call_trans2setfilepathinfo(2394)
> call_trans2setfilepathinfo(6) wasdnord/public_html/4133/1RIGHT.HTM
> info_level=1004 totdata=40
> [2004/09/21 12:00:02, 3] smbd/error.c:error_packet(94) error string =
> Operation not permitted
> [2004/09/21 12:00:02, 3] smbd/error.c:error_packet(113) error packet at
> smbd/trans2.c(2859) cmd=50 (SMBtrans2) NT_STATUS_ACCESS_DENIED
> Naturally, there was tons of other stuff in the log at this level so
> I'm not even sure if these errors in the log are related to this
> particular problem.
> Any ideas?
> Jason Joines
It gets even more bizarre. I have another share for access to non-user
web sites by a variety of editors. It is set up like this:
comment = Web Server
path = /local/htdocs
browseable = No
read only = No
create mask = 0664
directory mask = 0775
A directory and file I need to edit looks like this:
drwxrws--x+ 14 joeblow cbaweb 20480 Sep 24 16:47 undergraduate/
-rw-rw-r--+ 1 joeblow cbaweb 2434 Sep 24 16:47
I have access to this directory and files via the admin group and ACLs.
# file: undergraduate
# owner: joeblow
# group: cbaweb
# file: undergraduate/studentorganizations.php
# owner: joeblow
# group: cbaweb
Now, using VI on the actual filesystem I can edit this file all I want
to and everything behaves as expected. However, using any editor via
Samba I can only edit the file once, the second time it blanks it and
sets it to zero bites.
This is a repeatable situtaion:
Open the file, add a character, save, all is well.
Add another character, save, get editor specific errors and a zero byte
I removed the ACLs and added myself to the owning group, cbaweb. I can
still edit just fine locally. However via SMB I now get the same editor
specific error but the file is not zeroed. I just can't change it.
Don't know if it's relevant or not but I'm using posixgroups stored in
Any ideas anyone?
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