On Tuesday 2008 December 09 16:21:54 Scott Gifford wrote: >Christopher Zimmermann <[EMAIL PROTECTED]> writes: >> Hi! >> >> On my debian box using linux kernel its not possible to give away files, >> only root can change file owners. Is it possible to configure this >> behaviour and allow all users to chown their own files? > >As others have mentioned, normally this is a bad idea. But if you >have a specialized need for it, you can write a small program to open >the file, check the owner with fstat, then change the owner with >fchown. If you install this program setuid it will let you give this >capability to your users. > >If you used this approach, you would need to take great care in >writing the program so it doesn't allow users to give away others' >files.
While your technique is effective, it might be better to modify the existing chmod source. Otherwise you lose (or have to re-implement) all the nice features like -R. Do it right, (including handling the case where chown isn't suid, as well as various security issues) and you might be able to get upstream to accept it, as an option (e.g. ./configure --with-restricted-chown-override-when-suid-root). -- Boyd Stephen Smith Jr. ,= ,-_-. =. [EMAIL PROTECTED] ((_/)o o(\_)) ICQ: 514984 YM/AIM: DaTwinkDaddy `-'(. .)`-' http://iguanasuicide.org/ \_/
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