tools: hv: skip iso9660 mounts in hv_vss_daemon

fsreeze does not work for iso9660 filesystems. A ENOSUPP may be caught
in the freeze case, but the subsequent thaw call would fail and leads to
a false error.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

tools/hv/hv_vss_daemon.c

@@ -88,6 +88,8 @@ static int vss_operate(int operation)
 	while((ent = getmntent(mounts))) {
 		if (strncmp(ent->mnt_fsname, match, strlen(match)))
 			continue;
+		if (strcmp(ent->mnt_type, "iso9660") == 0)
+			continue;
 		if (strcmp(ent->mnt_dir, "/") == 0) {
 			root_seen = 1;
 			continue;