new helper: replace_fd()
authorAl Viro <viro@zeniv.linux.org.uk>
Tue, 21 Aug 2012 16:11:46 +0000 (12:11 -0400)
committerAl Viro <viro@zeniv.linux.org.uk>
Thu, 27 Sep 2012 01:09:57 +0000 (21:09 -0400)
analog of dup2(), except that it takes struct file * as source.

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

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