1 files changed, 80 insertions, 0 deletions
diff --git a/src/pmdas/linux/proc_sys_fs.c b/src/pmdas/linux/proc_sys_fs.c
new file mode 100644
index 0000000..021ae23
--- /dev/null
+++ b/src/pmdas/linux/proc_sys_fs.c
@@ -0,0 +1,80 @@
+/*
+ * Linux /proc/sys/fs metrics cluster
+ *
+ * Copyright (c) 2014 Red Hat.
+ * Copyright (c) 2003,2004 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 "proc_sys_fs.h"
+
+int
+refresh_proc_sys_fs(proc_sys_fs_t *proc_sys_fs)
+{
+    static int err_reported;
+    char buf[MAXPATHLEN];
+    FILE *filesp = NULL;
+    FILE *inodep = NULL;
+    FILE *dentryp = NULL;
+
+    memset(proc_sys_fs, 0, sizeof(proc_sys_fs_t));
+
+    if ((filesp  = linux_statsfile("/proc/sys/fs/file-nr", buf, sizeof(buf))) == NULL ||
+	(inodep  = linux_statsfile("/proc/sys/fs/inode-state", buf, sizeof(buf))) == NULL ||
+	(dentryp = linux_statsfile("/proc/sys/fs/dentry-state", buf, sizeof(buf))) == NULL) {
+	proc_sys_fs->errcode = -oserror();
+	if (err_reported == 0)
+	    fprintf(stderr, "Warning: vfs metrics are not available : %s\n",
+		    osstrerror());
+    }
+    else {
+	proc_sys_fs->errcode = 0;
+	if (fscanf(filesp,  "%d %d %d",
+			&proc_sys_fs->fs_files_count,
+			&proc_sys_fs->fs_files_free,
+			&proc_sys_fs->fs_files_max) != 3)
+	    proc_sys_fs->errcode = PM_ERR_VALUE;
+	if (fscanf(inodep,  "%d %d",
+			&proc_sys_fs->fs_inodes_count,
+			&proc_sys_fs->fs_inodes_free) != 2)
+	    proc_sys_fs->errcode = PM_ERR_VALUE;
+	if (fscanf(dentryp, "%d %d",
+			&proc_sys_fs->fs_dentry_count,
+			&proc_sys_fs->fs_dentry_free) != 2)
+	    proc_sys_fs->errcode = PM_ERR_VALUE;
+#if PCP_DEBUG
+	if (pmDebug & DBG_TRACE_LIBPMDA) {
+	    if (proc_sys_fs->errcode == 0)
+		fprintf(stderr, "refresh_proc_sys_fs: found vfs metrics\n");
+	    else
+		fprintf(stderr, "refresh_proc_sys_fs: botch! missing vfs metrics\n");
+	}
+#endif
+    }
+    if (filesp)
+	fclose(filesp);
+    if (inodep)
+	fclose(inodep);
+    if (dentryp)
+	fclose(dentryp);
+
+    if (!err_reported)
+	err_reported = 1;
+
+    if (proc_sys_fs->errcode == 0)
+	return 0;
+    return -1;
+}