From: Neil Brown <neilb@suse.de>
Date: Mon, 26 May 2008 23:18:33 +0000 (+1000)
Subject: Alway use a unique file name for opendev
X-Git-Tag: devel~29
X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fmdadm.git;a=commitdiff_plain;h=8c21018330e6adc15f347bd7c9e924866b8ca608;hp=2318b9f0dc98b03d3e3374e41b2ca6f85b18f922

Alway use a unique file name for opendev

Else mdadm and mdmon running in parallel can tread on each other.
---

diff --git a/util.c b/util.c
index c6273826..8e4e60d3 100644
--- a/util.c
+++ b/util.c
@@ -770,7 +770,8 @@ int dev_open(char *dev, int flags)
 	if (e > dev && *e == ':' && e[1] &&
 	    (minor = strtoul(e+1, &e, 0)) >= 0 &&
 	    *e == 0) {
-		snprintf(devname, sizeof(devname), "/dev/.tmp.md.%d:%d", major, minor);
+		snprintf(devname, sizeof(devname), "/dev/.tmp.md.%d:%d:%d",
+			 (int)getpid(), major, minor);
 		if (mknod(devname, S_IFBLK|0600, makedev(major, minor))==0) {
 			fd = open(devname, flags);
 			unlink(devname);