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: v220~148
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a765f3443f7d646b3a84dcac491be98ae7537ee4;p=thirdparty%2Fsystemd.git

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 de891447e7f..466dce439fa 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -4838,7 +4838,7 @@ 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