Permissions and fstab help

The SIN Raven · 10-18-2003, 05:56 PM

Hi there guys.
I need a little help with mi permissions in fstab.
The thing is that for the hard drivers i have what i need, because i whant to give full permission to root and group users.
Mi problem consistes that i need to give all the permitions to the group to mi CDRW, Floppy, and DVD, so all mi goup users can read wright and exec, but i whant only root and group users to be able to doo this...
For the hard drives the umas=0007 work perfectly, and for te CDRW, Floppy, and DVD, what shoul i use???
Here is mi current fstab:

/dev/hda3 swap swap defaults 0 0
/dev/hda4 / reiserfs defaults 1 1
/dev/hda2 /boot reiserfs defaults 1 2
/dev/hda1 /mnt/fat-c vfat umask=0007,defaults 0 0
/dev/hdb1 /mnt/fat-d vfat umask=0007,defaults 0 0
/dev/sr0 /mnt/cdrom iso9660 noauto,users,rw,exec 0 0
/dev/hdd /mnt/dvd iso9660 noauto,users,ro,exec 0 0
/dev/fd0 /mnt/floppy auto noauto,users.rw,exec 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
proc /proc proc defaults 0 0

Please guys, help me with this one...
Thanks.

The SIN Raven

serz · 10-18-2003, 06:03 PM

This is a part of my /etc/fstab file:

Code:

/dev/cdrom       /mnt/cdrom       iso9660     noauto,user,ro   0   0
/dev/dvdrom      /mnt/dvdrom      auto        noauto,user,ro   0   0
/dev/fd0         /mnt/floppy      auto        noauto,user,rw      0   0

You mount them read-only, except the floppy. I don't know as for the CDRW.

The SIN Raven · 10-18-2003, 06:12 PM

Thanks serz.
Anyone can help me, i really need to all the users group to read, write, exec, including the CDRW...
Thanks.

The SIN Raven

LinFreak! · 10-18-2003, 06:16 PM

Quote:

Originally posted by serz
This is a part of my /etc/fstab file:

Code:

/dev/cdrom /mnt/cdrom iso9660 noauto,user,ro 0 0 /dev/dvdrom /mnt/dvdrom auto noauto,user,ro 0 0 /dev/fd0 /mnt/floppy auto noauto,user,rw 0 0

You mount them read-only, except the floppy. I don't know as for the CDRW.

note the option "user" in there, that means whoever mounts the volume owns the volume.

The SIN Raven · 10-18-2003, 06:48 PM

Thanks LinFreak!.
Anyone can help me, i really need to all the users group to read, write, exec, including the CDRW...
Thanks.

The SIN Raven

The SIN Raven · 10-19-2003, 06:54 PM

Anyone please???
Thanks.

The SIN Raven

TheOneAndOnlySM · 10-19-2003, 07:06 PM

you want everybody to be able to do everything on a device, right?

ok, i don't know what device represents cdrw, but he first thing is to make sure your fstab is similar to the ones presented here, and it seems that it is, so don't worry about /etc/fstab

change permissions on your device; do su - (enter password for root), cd into /dev, then do chmod 777 dvd cdrom fd0 sr0

quatsch · 10-19-2003, 07:09 PM

if the floppies you are using are DOS formatted, you can use the same options as for your /dev/hda1. I don't think you can do what you want if the floppy is ext2 formatted from fstab.

As for CDs, I'm not sure. Maybe a conbination of no-rock option and mode will do it (consult man mount for details). Only root will be able to write to it unless you set the right permissions for the programs writing to it.

The SIN Raven · 10-19-2003, 07:10 PM

O.K., now we are talking...
What about only the root and the group beeing able to use the devices???
It´s that possible?
Thanks for the help TheOneAndOnlySM.

The SIN Raven

quatsch · 10-19-2003, 07:19 PM

if the floppies you are using are DOS formatted, you can use the same options as for your /dev/hda1. I don't think you can do what you want if the floppy is ext2 formatted from fstab.

you could also try
chmod 770 /dev/fd0

The SIN Raven · 10-19-2003, 07:22 PM

An will this will give only permition to read/write/exec to group and root?
Thanks.

The SIN Raven

LinFreak! · 10-19-2003, 07:22 PM

type:
man fstab
man mount
also:
man chmod
man chown

for the full info and true enlightenment!

*edit*
also try:
ls -al /dev | more
to see the permissions of all the files in your /dev folder

The SIN Raven · 10-27-2003, 07:51 AM

Hey quatsh, many thanks for the help, and all the others too...
The chmod 770, command was what i was loking for...
Also did:

chmod u+s /usr/bin/cdrecord
chmod u+s /usr/bin/mkisofs
chmod u+s /usr/bin/cdparanoia

To give permission to cdrecording tools...
Many thanks...
Slackware THE Linux...

The SIN Raven

murray_linux · 11-20-2003, 05:50 PM

Quote:

Originally posted by serz
This is a part of my /etc/fstab file:

Code:

/dev/cdrom /mnt/cdrom iso9660 noauto,user,ro 0 0 /dev/dvdrom /mnt/dvdrom auto noauto,user,ro 0 0 /dev/fd0 /mnt/floppy auto noauto,user,rw 0 0

You mount them read-only, except the floppy. I don't know as for the CDRW.

My /etc/fstab is set up the same way, and I can mount the drives successfully as my user, but i cannot browse the directory that I mount my cdroms. I get a permissions error. Only root can browse the dir. Any ideas?

LinFreak! · 11-20-2003, 06:46 PM

check the permissions of the actual folder ("/mnt/cdrom", "/mnt/dvdrom" etc.).