Andrew Farmer wrote:
- snip -

So, is it a problem on your linux (where you are root)

Farmer, farmer, u really can't read !!!
Translation just for u:
Previous sencence is CLEARLY saying, you are ROOT on your system !

to copy some program (e.g. /bin/cat, but the best your own
statically linked prog to new directory,
and set uid flag on it? No ! (man chmod, if yes)



Yes, it is. Setting the suid flag on a file makes it run as the owner of the file, which will not be root unless root created the file and set the suid flag.

Once again, NO, 'cause you are ROOT on your system !

I am in very good disposition now, so specially JUST for Farmer
(who can't read) I very short recapitulate the thread:



Gabor:
How can I do users can mount anything ?

answers:

Meka[ni] :  Make suid root on mount command.  (unsecure solution)
Matthias:   Out of toppic, (probably didn't read the question ?)
Collins:   Use sudo.  (unsecure solution)
Me:      Use fstab with "user" flag.  (can be secure if setup properly)

Andrew:

"Well, the problem is that you can only mount an image as a user
if the image and mountpoint are specified in the fstab.
I still don't know why mount (or the kernel or something)
can't start allowing mounts of a file readable by a user over
a directory the user owns..."

Me:
It is not possible for security reason ...
"but if you like to allow users just mount anything"
(using advices from Meka[ni] or Collins for doing so)
it's unsecure ... because of possible Trojan backdoor


Question for Farmer: Can you see now, you are out off topic, missunderstood me and still talking about martians ?

noro








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