Skip to main content

linux - CIFS mounted drive setting "stick-bit" on all files, cannot change permissions or modify files



I have a folder mounted on an Ubuntu 8.10 sever through cifs that I simply cannot change the permissions on once mounted.




Here is a breakdown of what's going on:




  • All files within the mounted folder automatically have their permissions set to -rwxrwSrwx regardless of whether the file is create on the windows server or on the linux machine.

  • I have the same directory mounted on two other linux servers (both running 9.10 instead of 8.10) with no problems at all. They all are using the same fstab options and the same credentials.



    //server/folder /media/backups cifs credentials=/etc/samba/.arcadia_cred,noexec,noserverino 0 0


  • I've I run a chmod command a million different ways, all of which report successfully changing the permissions. However it doesn't.


  • The issue began after I updated from 8.04 to 8.10




Any idea why this may be happening on one machine? Since it started after an upgrade I'm not sure what is the bes thing to do.



Any help you could give would great! None of my automated backup scripts are working because of this!


Answer



What OS is the server? Does it support CIFS Unix extensions? If not then nothing you do with chmod matters. You can set the user owner, file and directory permissions by setting options within your mount.



http://linux.die.net/man/8/mount.cifs





uid=arg
sets the uid that will own all
files on the mounted filesystem. It
may be specified as either a username
or a numeric uid. This parameter is
ignored when the target server
supports the CIFS Unix extensions.



gid=arg
sets the gid that will own all
files on the mounted filesystem. It
may be specified as either a groupname

or a numeric gid. This parameter is
ignored when the target server
supports the CIFS Unix extensions.



file_mode=arg
If the server does not
support the CIFS Unix extensions this
overrides the default file mode.



dir_mode=arg

If the server does not
support the CIFS Unix extensions this
overrides the default mode for
directories.



Comments

Post a Comment

Popular posts from this blog

linux - iDRAC6 Virtual Media native library cannot be loaded

When attempting to mount Virtual Media on a iDRAC6 IP KVM session I get the following error: I'm using Ubuntu 9.04 and: $ javaws -version Java(TM) Web Start 1.6.0_16 $ uname -a Linux aud22419-linux 2.6.28-15-generic #51-Ubuntu SMP Mon Aug 31 13:39:06 UTC 2009 x86_64 GNU/Linux $ firefox -version Mozilla Firefox 3.0.14, Copyright (c) 1998 - 2009 mozilla.org On Windows + IE it (unsurprisingly) works. I've just gotten off the phone with the Dell tech support and I was told it is known to work on Linux + Firefox, albeit Ubuntu is not supported (by Dell, that is). Has anyone out there managed to mount virtual media in the same scenario?
Post a Comment
Read more

hp proliant - Smart Array P822 with HBA Mode?

We get an HP DL360 G8 with an Smart Array P822 controller. On that controller will come a HP StorageWorks D2700 . Does anybody know, that it is possible to run the Smart Array P822 in HBA mode? I found only information about the P410i, who can run HBA. If this is not supported, what you think about the LSI 9207-8e controller? Will this fit good in that setup? The Hardware we get is used but all original from HP. The StorageWorks has 25 x 900 GB SAS 10K disks. Because the disks are not new I would like to use only 22 for raid6, and the rest for spare (I need to see if the disk count is optimal or not for zfs). It would be nice if I'm not stick to SAS in future. As OS I would like to install debian stretch with zfs 0.71 as file system and software raid. I have see that hp has an page for debian to. I would like to use hba mode because it is recommend, that zfs know at most as possible about the disk, and I'm independent from the raid controller. For us zfs have many benefits,
Post a Comment
Read more

apache 2.2 - Server Potentially Compromised -- c99madshell

So, low and behold, a legacy site we've been hosting for a client had a version of FCKEditor that allowed someone to upload the dreaded c99madshell exploit onto our web host. I'm not a big security buff -- frankly I'm just a dev currently responsible for S/A duties due to a loss of personnel. Accordingly, I'd love any help you server-faulters could provide in assessing the damage from the exploit. To give you a bit of information: The file was uploaded into a directory within the webroot, "/_img/fck_uploads/File/". The Apache user and group are restricted such that they can't log in and don't have permissions outside of the directory from which we serve sites. All the files had 770 permissions (user rwx, group rwx, other none) -- something I wanted to fix but was told to hold off on as it wasn't "high priority" (hopefully this changes that). So it seems the hackers could've easily executed the script. Now I wasn't able
Post a Comment
Read more