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Re: O_NOFOLLOW
- To: Roland McGrath <roland@frob.com>
- Subject: Re: O_NOFOLLOW
- From: Andreas Jaeger <aj@arthur.rhein-neckar.de>
- Date: 24 Oct 1998 11:25:28 +0200
- Cc: GNU libc hacker <libc-hacker@gnu.org>
- Mail-Copies-To: never
- References: <199810240838.EAA25138@baalperazim.frob.com>
>>>>> Roland McGrath writes:
> Does O_NOFOLLOW mean to not follow symlinks, and instead open the node for
> the symlink itself? The Hurd has had O_NOLINK to mean that for years. I
> wish Linux hackers could be bothered to look three feet for an existing
> name to be compatible with.
It means to not follow symlinks when opening - but if a symlink is
tried it's not opened at all.
This was AFAIK implemented to guard against creating, e.g. forcing
root to create a file (core) that is symlinked to /etc/passwd.
Andreas
--
Andreas Jaeger aj@arthur.rhein-neckar.de jaeger@informatik.uni-kl.de
for pgp-key finger ajaeger@aixd1.rhrk.uni-kl.de