From: Roland Dreier <roland@purestorage.com>
Date: Mon, 8 Jul 2013 18:15:45 +0000 (-0700)
Subject: IB/uverbs: Use get_unused_fd_flags(O_CLOEXEC) instead of get_unused_fd()
X-Git-Tag: v3.11-rc1~16^2~1^3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=da183c7af8444cb2c1beedaa498a9359f19ff665;p=pandora-kernel.git

IB/uverbs: Use get_unused_fd_flags(O_CLOEXEC) instead of get_unused_fd()

The macro get_unused_fd() is used to allocate a file descriptor with
default flags.  Those default flags (0) can be "unsafe": O_CLOEXEC must
be used by default to not leak file descriptor across exec().

Replace calls to get_unused_fd() in uverbs with calls to
get_unused_fd_flags(O_CLOEXEC).  Inheriting uverbs fds across exec()
cannot be used to do anything useful.

Based on a patch/suggestion from Yann Droneaud <ydroneaud@opteya.com>.

Signed-off-by: Roland Dreier <roland@purestorage.com>
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