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allow the temp files created by open() to be linked to
authorAl Viro <viro@zeniv.linux.org.uk>
Tue, 11 Jun 2013 04:34:36 +0000 (08:34 +0400)
committerAl Viro <viro@zeniv.linux.org.uk>
Sat, 29 Jun 2013 08:57:11 +0000 (12:57 +0400)
O_TMPFILE | O_CREAT => linkat() with AT_SYMLINK_FOLLOW and /proc/self/fd/<n>
as oldpath (i.e. flink()) will create a link
O_TMPFILE | O_CREAT | O_EXCL => ENOENT on attempt to link those guys

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

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