Mounting Windown 2k3 Share in Ubuntu Dapper
If you are using Dapper, Brezzy or Hoary you may encounter similar problems when dealing with Win2k3 shares. I got the following error when trying to mount a share using smbfs:
# mount -t smbfs //server/share /mnt -o username=user
cli_negprot: SMB signing is mandatory and we have disabled it.
21041: protocol negotiation failed
SMB connection failed
This is because your smbfs version does not support the default Win 2k3 encryption scheme. There is a simple workaround:
# mount -t cifs //server/share /mnt -o username=user
This always works for me when mounting the share as root. I decided to automate the process so I created a following fstab entry:
//server/share /mnt cifs rw,user,noauto,username=user,password=pass 0 0
Now mounting still works great when I’m root, but whenever I try to do it as a user I get the following:
$ mount //dc01/Public
mount error 1 = Operation not permitted
Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)
I solved one problem, but I found another. CIFS refuses to mount with user permissions. Any suggestions how to fix this?
Mookle Wilson posted this tip in the comments:
sudo chmod +s /sbin/mount.cifs
This should let you mount your cifs drives as a user.
Related Posts:
December 29th, 2006 at 2:12 pm (2262) [Quote]
As root: chmod +s /sbin/mount.cifs
Posted usingJanuary 29th, 2007 at 7:15 am (2644) [Quote]
THX Mookie!
Posted usingI had the same problem and this fixed it!
January 29th, 2007 at 10:27 am (2647) [Quote]
Yup, Mookie’s suggestion worked for me too.
Posted usingFebruary 8th, 2007 at 10:42 am (2875) [Quote]
Unfortunately it didn’t work for me; I got
mount error: permission denied or not superuser and mount.cifs not installed SUID
Posted usingFebruary 8th, 2007 at 11:04 am (2877) [Quote]
Korinthe - do you get that message when mounting or when trying to do the chmod?
Do the chmod as root and then mount. That may fix the issue here.
Either that or you don’t have mount.cifs installed. See if it exists in your /sbin directory:
ls /sbin | grep cifsIf it’s not there you probably will need to instal the smbfs package. On redhat that should be possible via yum no?
Posted usingJune 27th, 2007 at 4:03 pm (4983) [Quote]
[…] First you will need to mount the network share on your box. Next you will need the Spreadsheet::ParseExcel package from CPAN. […]
Posted usingJuly 24th, 2007 at 5:47 am (5406) [Quote]
I too had this problem
You have to set the right owner for the mount point
for example, about the command:
/mnt has to be owned by user:user_group
ps. remember to add suid to umount.cifs too
Posted usingJuly 24th, 2007 at 9:06 am (5407) [Quote]
Good point. Actually, isn’t this the expected behavior? Every time I set up a read/write mount point outside of /home I usually chown it so that I’m the owner. It might not be best practice, but it doesn’t hurt.
Posted usingI don’t think the the rw,user option in fstab overrides the normal file permission on your mount point directory, but I might be wrong…
July 24th, 2007 at 6:15 pm (5412) [Quote]
I also had this problem, and discovered that somehow my mount point had become owned by root, despite it being in my user’s home directory, and created by the user. Not sure how the permissions had been changed, but changed them back to the user again and all was well.
Posted using