From: Cristian Rodríguez <crrodriguez@opensuse.org>
Date: Mon, 11 May 2015 18:01:37 +0000 (-0300)
Subject: shared: Use O_EXCL with O_TMPFILE in open_tmpfile
X-Git-Tag: v226.4~1^2~398
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=eba20c2f8afe24a8bab713946a248b45dd2a80f1

shared: Use O_EXCL with O_TMPFILE in open_tmpfile

In this usecase, the file will never be materialized
with linkat().
---

diff --git a/src/shared/util.c b/src/shared/util.c
index e36389eac..275fdece1 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -4839,7 +4839,7 @@ int open_tmpfile(const char *path, int flags) {
 
 #ifdef O_TMPFILE
         /* Try O_TMPFILE first, if it is supported */
-        fd = open(path, flags|O_TMPFILE, S_IRUSR|S_IWUSR);
+        fd = open(path, flags|O_TMPFILE|O_EXCL, S_IRUSR|S_IWUSR);
         if (fd >= 0)
                 return fd;
 #endif