Date: Mon, 14 Aug 2000 15:14:45 +0200 From: Marc Silver <marcs@draenor.org> To: jan@ic.unicamp.br Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: allow users to mount CD Message-ID: <20000814151445.C770@draenor.org> In-Reply-To: <20000813180747.C429@abstract.dhis.net>; from janpf@iname.com on Sun, Aug 13, 2000 at 06:07:47PM -0300 References: <20000813180747.C429@abstract.dhis.net>
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Hey there,
As far as I know there isn't something like this in FreeBSD. However,
please find attached a short c program written by Omachonu Ogali that
allows normal users to mount the cdrom (you can obviously modify it to
mount the floppy as well). To install it, simply do the following: (as
root)
cc -o sucd sucd.c
chmod 4555 sucd
mv sucd /usr/local/bin
What you're doing there is setting the binary as setuid which allows
people to execute it as root, and allows them to mount/unmount the CD.
I would warn against this. ONLY root should ever mount/unmount file
systems, so unless you _really_ trust these users, I wouldn't allow
this.
Hope this helps.
Cheers,
Marc
On Sun, Aug 13, 2000 at 06:07:47PM -0300, Jan Pfeifer wrote:
> hi,
>
> How do I let users mount a CD, or any other mount point ?
>
> thanks,
>
> jan
>
> ps.: I tried the mount and fstab manpages to no avail
> ps2.: I wanted to avoid to make a suid script to do this ...
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/*
* suCD 0.1
* --------
* Allows regular (non-root) users to mount the cdrom
* - Omachonu Ogali <oogali@tribune.intranova.net>
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
int main(int argc, char **argv)
{
printf("suCD 0.1\n");
printf("oogali@tribune.intranova.net\n\n");
if (getuid() != 0) {
if (seteuid(0) != 0) {
perror("seteuid()");
return -1;
}
}
if (argc < 2) {
system("/sbin/mount /cdrom");
} else {
if (strcmp(argv[1], "mount") == 0) {
system("/sbin/mount /cdrom");
} else if (strcmp(argv[1], "unmount") == 0) {
system("/sbin/umount /cdrom");
} else {
printf("%s [action]\n");
printf("[action] may be either 'mount' or 'unmount'.\n");
return -1;
}
}
return 0;
}
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