1 files changed, 41 insertions, 0 deletions
diff --git a/src/pmdas/linux/sysfs_kernel.c b/src/pmdas/linux/sysfs_kernel.c
new file mode 100644
index 0000000..8880634
--- /dev/null
+++ b/src/pmdas/linux/sysfs_kernel.c
@@ -0,0 +1,41 @@
+/*
+ * Linux sysfs_kernel cluster
+ *
+ * Copyright (c) 2009,2014 Red Hat.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include "sysfs_kernel.h"
+#include "indom.h"
+
+int
+refresh_sysfs_kernel(sysfs_kernel_t *sk)
+{
+    char buf[MAXPATHLEN];
+    int fd, n;
+
+    snprintf(buf, sizeof(buf), "%s/sys/kernel/uevent_seqnum", linux_statspath);
+    if ((fd = open(buf, O_RDONLY)) < 0) {
+    	sk->valid_uevent_seqnum = 0;
+	return -oserror();
+    }
+
+    if ((n = read(fd, buf, sizeof(buf))) <= 0)
+    	sk->valid_uevent_seqnum = 0;
+    else {
+	buf[n-1] = '\0';
+    	sscanf(buf, "%llu", (long long unsigned int *)&sk->uevent_seqnum);
+	sk->valid_uevent_seqnum = 1;
+    }
+    close(fd);
+    return 0;
+}