Can't mount except as su.

Sinope · 09-10-2004, 04:38 PM

I'd like to be able to mount and umount as a user. However, I just get an error message:

Code:

~$ mount /dev/dvd
mount: must be superuser to use mount
~$ mount /mnt/dvd
mount: must be superuser to use mount
~$

The permissions are set right, I believe....

Code:

~$ ll /bin/mount /dev/dvd /dev/hdd
-rwxr-xr-x  1 root bin    68804 2004-05-27 17:26 /bin/mount*
lrwxrwxrwx  1 root root       3 2004-09-10 03:22 /dev/dvd -> hdd
brw-rw----  1 root cdrom 22, 64 2004-09-10 03:22 /dev/hdd
~$ groups
users root bin sys adm floppy cdrom slocate www mount music
~$

Here is my /etc/fstab:

Code:

~$ cat /etc/fstab
/dev/hdb1        /                ext2        defaults        1   1
/dev/hda1        /boot            ext2        defaults        1   2
/dev/hda3        /ntfs-c          ntfs        ro,umask=0222   1   0
/dev/cdrom0      /mnt/cdrom0      iso9660     noauto,ro,user  0   0
/dev/cdrom1      /mnt/cdrom1      iso9660     noauto,ro,user  0   0
/dev/dvd         /mnt/dvd         iso9660     noauto,ro,user  0   0
/dev/fd0         /mnt/floppy      auto        user,noauto     0   0
/dev/sda1        /mnt/usbdisk     vfat     user,noauto,umask=0002    0   0
/dev/muvo        /mnt/muvo        vfat     user,noauto,umask=0002    0   0
//MATRIX/SharedDocs  /mnt/smb/matrix  smbfs       user,noauto     0   0
//LIB/SharedDocs     /mnt/smb/lib     smbfs       user,noauto     0   0
devpts           /dev/pts         devpts      gid=5,mode=620  0   0
proc             /proc            proc        defaults        0   0
~$

leonscape · 09-10-2004, 05:09 PM

Try moving the noauto option to the end, also make sure /dev/dvd does actually point to the right device ( i.e /dev/hdc ).

The file type should probably be auto for DVD's since they can take iso9660 and UDF.

Sinope · 09-10-2004, 07:14 PM

Tried your suggestions... no change.

Thanks for the tip about DVD fs types, though.

Note that this is not just a problem with /dev/dvd... the same thing happens for anything I'm supposed to be able to mount as user..... /dev/muvo, /dev/floppy, &c&c.

Nobody seems to have any clue what is wrong here! What the hell!?! *Slams on keyboard*

Sinope · 09-10-2004, 07:31 PM

Well... I solved the problem by chgrp mount /bin/mount /bin/umount, mount being a dedicated group for those I want to be able to mount, and chmod +s the same files.

This works, but is not a very clean solution and doesn't really explain what I am doing wrong. The "user" in my fstab should be enough!! Anyone know why this happens?

Thanks

--S

Afherthought: It actually seems like this would be a BETTER solution than getting the user option to work, since then I can control WHO can mount, but there are other ways of doing this.... chown o-x mount for instance.

J.W. · 09-10-2004, 08:05 PM

Have you tried using "users" instead of "user"? That will open it up to all users -- J.W.

egag · 09-10-2004, 08:06 PM

Thanx for that... ( helped me too... ) ,but if you want to be able to use all commands from /bin, add yourself to the goup " bin " in /etc/group.

( maybe you gotto reboot after doing that...? )

egag

Sinope · 09-10-2004, 10:57 PM

I have already tried both of your suggestions.

BTW, JW, the way I understand it, "users" does not mean any user can mount, it means any user can UNmount, regardless of who mounted to begin with. If you use "user", then only the mounter can unmount.

Still looking for answers....

--S