From: Oleg Nesterov <oleg@redhat.com>
Date: Wed, 11 Sep 2013 21:24:41 +0000 (-0700)
Subject: exec: move allow_write_access/fput to exec_binprm()
X-Git-Tag: v3.12-rc1~52^2~73
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=52f14282bb0c3d3e5ba2a9eaacb12ff37a033e7e;p=pandora-kernel.git

exec: move allow_write_access/fput to exec_binprm()

When search_binary_handler() succeeds it does allow_write_access() and
fput(), then it clears bprm->file to ensure the caller will not do the
same.

We can simply move this code to exec_binprm() which is called only once.
In fact we could move this to free_bprm() and remove the same code in
do_execve_common's error path.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Zach Levis <zml@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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