From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 13 Mar 2011 19:56:26 +0000 (-0400)
Subject: readlinkat(), fchownat() and fstatat() with empty relative pathnames
X-Git-Tag: v2.6.39-rc1~514^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=65cfc6722361570bfe255698d9cd4dccaf47570d;p=pandora-kernel.git

readlinkat(), fchownat() and fstatat() with empty relative pathnames

For readlinkat() we simply allow empty pathname; it will fail unless
we have dfd equal to O_PATH-opened symlink, so we are outside of
POSIX scope here.  For fchownat() and fstatat() we allow AT_EMPTY_PATH;
let the caller explicitly ask for such behaviour.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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