[Samba] files being blanked by writing

Jason Joines Tue, 21 Sep 2004 10:52:53 -0700

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.

[users]
        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 yielding:
-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] smbd/oplock_linux.c:linux_set_kernel_oplock(186) 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?

Thanks,

Jason Joines
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[Samba] files being blanked by writing

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