1 files changed, 72 insertions, 0 deletions
diff --git a/src/pmdas/linux/swapdev.c b/src/pmdas/linux/swapdev.c
new file mode 100644
index 0000000..0b5521e
--- /dev/null
+++ b/src/pmdas/linux/swapdev.c
@@ -0,0 +1,72 @@
+/*
+ * Linux Swap Device Cluster
+ *
+ * Copyright (c) 2014 Red Hat.
+ * Copyright (c) 2000,2004 Silicon Graphics, Inc.  All Rights Reserved.
+ * 
+ * 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 "pmapi.h"
+#include "impl.h"
+#include "pmda.h"
+#include "indom.h"
+#include "swapdev.h"
+
+int
+refresh_swapdev(pmInDom swapdev_indom)
+{
+    char buf[MAXPATHLEN];
+    swapdev_t *swap;
+    FILE *fp;
+    char *path;
+    char *size;
+    char *used;
+    char *priority;
+    int sts;
+
+    pmdaCacheOp(swapdev_indom, PMDA_CACHE_INACTIVE);
+
+    if ((fp = linux_statsfile("/proc/swaps", buf, sizeof(buf))) == NULL)
+	return -oserror();
+
+    while (fgets(buf, sizeof(buf), fp) != NULL) {
+	if (buf[0] != '/')
+	    continue;
+	if ((path = strtok(buf, " \t")) == 0)
+	    continue;
+	if ((/*type: */ strtok(NULL, " \t")) == NULL ||
+	    (size = strtok(NULL, " \t")) == NULL ||
+	    (used = strtok(NULL, " \t")) == NULL ||
+	    (priority = strtok(NULL, " \t")) == NULL)
+	    continue;
+	sts = pmdaCacheLookupName(swapdev_indom, path, NULL, (void **)&swap);
+	if (sts == PMDA_CACHE_ACTIVE)	/* repeated line in /proc/swaps? */
+	    continue;
+	if (sts == PMDA_CACHE_INACTIVE) { /* re-activate an old swap device */
+	    pmdaCacheStore(swapdev_indom, PMDA_CACHE_ADD, path, swap);
+	}
+	else {	/* new swap device */
+	    if ((swap = malloc(sizeof(swapdev_t))) == NULL)
+		continue;
+#if PCP_DEBUG
+	    if (pmDebug & DBG_TRACE_LIBPMDA)
+		fprintf(stderr, "refresh_swapdev: add \"%s\"\n", path);
+#endif
+	    pmdaCacheStore(swapdev_indom, PMDA_CACHE_ADD, path, swap);
+	}
+	sscanf(size, "%u", &swap->size);
+	sscanf(used, "%u", &swap->used);
+	sscanf(priority, "%d", &swap->priority);
+    }
+    fclose(fp);
+    return 0;
+}