X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fmdadm.git;a=blobdiff_plain;f=util.c;fp=util.c;h=c7585aca3e4a76e98cda5d288fc39e3323c30bca;hp=21a63c9a638ca9e6bbb6d5a1b2ea4b5e6d3efaa5;hb=9db2ab4e9b1ad79b9364b6e03bdd675716a688a5;hpb=99148c19bd9149bb938309ffb6b4dcde20b67934

diff --git a/util.c b/util.c
index 21a63c9a..c7585aca 100644
--- a/util.c
+++ b/util.c
@@ -200,6 +200,30 @@ out:
 	return ret;
 }
 
+int md_array_valid(int fd)
+{
+	struct mdinfo *sra;
+	int ret;
+
+	sra = sysfs_read(fd, NULL, GET_ARRAY_STATE);
+	if (sra) {
+		if (sra->array_state != ARRAY_UNKNOWN_STATE)
+			ret = 0;
+		else
+			ret = -ENODEV;
+
+		free(sra);
+	} else {
+		/*
+		 * GET_ARRAY_INFO doesn't provide access to the proper state
+		 * information, so fallback to a basic check for raid_disks != 0
+		 */
+		ret = ioctl(fd, RAID_VERSION);
+	}
+
+	return !ret;
+}
+
 int md_array_active(int fd)
 {
 	struct mdinfo *sra;