From: Neil Brown <neilb@suse.de>
Date: Fri, 14 Dec 2007 09:13:51 +0000 (+1100)
Subject: Make sure sysfs_read never succeeds for a non-MD device.
X-Git-Tag: mdadm-2.6.5~37
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2faf1f5f635419a922cf0072c435a23a78b793a7;p=thirdparty%2Fmdadm.git

Make sure sysfs_read never succeeds for a non-MD device.

... just in case.
---

diff --git a/sysfs.c b/sysfs.c
index 16744f1b..1dbc680f 100644
--- a/sysfs.c
+++ b/sysfs.c
@@ -76,7 +76,10 @@ struct sysarray *sysfs_read(int fd, int devnum, unsigned long options)
 
 	if (fd >= 0) {
 		struct stat stb;
-		if (fstat(fd, &stb)) return NULL;
+		mdu_version_t vers;
+ 		if (fstat(fd, &stb)) return NULL;
+		if (ioctl(fd, RAID_VERSION, &vers) != 0)
+			return NULL;
 		if (major(stb.st_rdev)==9)
 			sprintf(sra->name, "md%d", minor(stb.st_rdev));
 		else