On Sun, Sep 16, 2001 at 09:40:06PM +0200, Eamon Roque wrote: > Hi! > > Why is it then that when I mount a cdrom by hand, I can't change the options? > When I do a "mount -o exec /cdrom" I get still have the following in > /etc/mtab: > /dev/sr1 on /cdrom type iso9660 (ro,nosuid,nodev) > > Am I missing something?! Before I used Debian, this wasn't a problem (SuSE > 7.0 with the original devfsd from R.Gooch's site). Has this anything to do > with the default config?! > Actually this has nothing to do with this thread, but anyway:
There are two sets of permissions on your cdrom A. The permissions on /dev/cdrom (the topic that started this thread) determine who can do things without mounting, such as playing audio CDs, ejecting the tray or burning CDs. B. The options in /etc/fstab determine the defaults for mount. As an important security precaution, mount can only override these if run as root. The whole point of putting e.g. noexec in /etc/fstab is to prevent users (or viruses run by users) from enabling exec permissions contrary to roots orders (as given in /etc/fstab). So, mount -o works (by design) only if you are root. -- This message is hastily written, please ignore any unpleasant wordings, do not consider it a binding commitment, even if its phrasing may indicate so. Its contents may be deliberately or accidentally untrue. Trademarks and other things belong to their owners, if any.
