![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/src/vserver.c b/src/vserver.c
--- /dev/null
+++ b/src/vserver.c
@@ -0,0 +1,367 @@
+/**
+ * collectd - src/vserver.c
+ * Copyright (C) 2006,2007 Sebastian Harl
+ * Copyright (C) 2007-2010 Florian octo Forster
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Sebastian Harl <sh at tokkee.org>
+ * Florian octo Forster <octo at collectd.org>
+ **/
+
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
+
+#include <dirent.h>
+#include <sys/types.h>
+
+#define BUFSIZE 512
+
+#define PROCDIR "/proc/virtual"
+
+#if !KERNEL_LINUX
+# error "No applicable input method."
+#endif
+
+static int pagesize = 0;
+
+static int vserver_init (void)
+{
+ /* XXX Should we check for getpagesize () in configure?
+ * What's the right thing to do, if there is no getpagesize ()? */
+ pagesize = getpagesize ();
+
+ return (0);
+} /* static void vserver_init(void) */
+
+static void traffic_submit (const char *plugin_instance,
+ const char *type_instance, derive_t rx, derive_t tx)
+{
+ value_t values[2];
+ value_list_t vl = VALUE_LIST_INIT;
+
+ values[0].derive = rx;
+ values[1].derive = tx;
+
+ vl.values = values;
+ vl.values_len = STATIC_ARRAY_SIZE (values);
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "vserver", sizeof (vl.plugin));
+ sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
+ sstrncpy (vl.type, "if_octets", sizeof (vl.type));
+ sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
+
+ plugin_dispatch_values (&vl);
+} /* void traffic_submit */
+
+static void load_submit (const char *plugin_instance,
+ gauge_t snum, gauge_t mnum, gauge_t lnum)
+{
+ value_t values[3];
+ value_list_t vl = VALUE_LIST_INIT;
+
+ values[0].gauge = snum;
+ values[1].gauge = mnum;
+ values[2].gauge = lnum;
+
+ vl.values = values;
+ vl.values_len = STATIC_ARRAY_SIZE (values);
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "vserver", sizeof (vl.plugin));
+ sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
+ sstrncpy (vl.type, "load", sizeof (vl.type));
+
+ plugin_dispatch_values (&vl);
+}
+
+static void submit_gauge (const char *plugin_instance, const char *type,
+ const char *type_instance, gauge_t value)
+
+{
+ value_t values[1];
+ value_list_t vl = VALUE_LIST_INIT;
+
+ values[0].gauge = value;
+
+ vl.values = values;
+ vl.values_len = STATIC_ARRAY_SIZE (values);
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "vserver", sizeof (vl.plugin));
+ sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
+ sstrncpy (vl.type, type, sizeof (vl.type));
+ sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
+
+ plugin_dispatch_values (&vl);
+} /* void submit_gauge */
+
+static derive_t vserver_get_sock_bytes(const char *s)
+{
+ value_t v;
+ int status;
+
+ while (s[0] != '/')
+ ++s;
+
+ /* Remove '/' */
+ ++s;
+
+ status = parse_value (s, &v, DS_TYPE_DERIVE);
+ if (status != 0)
+ return (-1);
+ return (v.derive);
+}
+
+static int vserver_read (void)
+{
+#if NAME_MAX < 1024
+# define DIRENT_BUFFER_SIZE (sizeof (struct dirent) + 1024 + 1)
+#else
+# define DIRENT_BUFFER_SIZE (sizeof (struct dirent) + NAME_MAX + 1)
+#endif
+
+ DIR *proc;
+ struct dirent *dent; /* 42 */
+ char dirent_buffer[DIRENT_BUFFER_SIZE];
+
+ errno = 0;
+ proc = opendir (PROCDIR);
+ if (proc == NULL)
+ {
+ char errbuf[1024];
+ ERROR ("vserver plugin: fopen (%s): %s", PROCDIR,
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (-1);
+ }
+
+ while (42)
+ {
+ int len;
+ char file[BUFSIZE];
+
+ FILE *fh;
+ char buffer[BUFSIZE];
+
+ struct stat statbuf;
+ char *cols[4];
+
+ int status;
+
+ status = readdir_r (proc, (struct dirent *) dirent_buffer, &dent);
+ if (status != 0)
+ {
+ char errbuf[4096];
+ ERROR ("vserver plugin: readdir_r failed: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ closedir (proc);
+ return (-1);
+ }
+ else if (dent == NULL)
+ {
+ /* end of directory */
+ break;
+ }
+
+ if (dent->d_name[0] == '.')
+ continue;
+
+ len = ssnprintf (file, sizeof (file), PROCDIR "/%s", dent->d_name);
+ if ((len < 0) || (len >= BUFSIZE))
+ continue;
+
+ status = stat (file, &statbuf);
+ if (status != 0)
+ {
+ char errbuf[4096];
+ WARNING ("vserver plugin: stat (%s) failed: %s",
+ file, sstrerror (errno, errbuf, sizeof (errbuf)));
+ continue;
+ }
+
+ if (!S_ISDIR (statbuf.st_mode))
+ continue;
+
+ /* socket message accounting */
+ len = ssnprintf (file, sizeof (file),
+ PROCDIR "/%s/cacct", dent->d_name);
+ if ((len < 0) || ((size_t) len >= sizeof (file)))
+ continue;
+
+ if (NULL == (fh = fopen (file, "r")))
+ {
+ char errbuf[1024];
+ ERROR ("Cannot open '%s': %s", file,
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ }
+
+ while ((fh != NULL) && (NULL != fgets (buffer, BUFSIZE, fh)))
+ {
+ derive_t rx;
+ derive_t tx;
+ char *type_instance;
+
+ if (strsplit (buffer, cols, 4) < 4)
+ continue;
+
+ if (0 == strcmp (cols[0], "UNIX:"))
+ type_instance = "unix";
+ else if (0 == strcmp (cols[0], "INET:"))
+ type_instance = "inet";
+ else if (0 == strcmp (cols[0], "INET6:"))
+ type_instance = "inet6";
+ else if (0 == strcmp (cols[0], "OTHER:"))
+ type_instance = "other";
+ else if (0 == strcmp (cols[0], "UNSPEC:"))
+ type_instance = "unspec";
+ else
+ continue;
+
+ rx = vserver_get_sock_bytes (cols[1]);
+ tx = vserver_get_sock_bytes (cols[2]);
+ /* cols[3] == errors */
+
+ traffic_submit (dent->d_name, type_instance, rx, tx);
+ } /* while (fgets) */
+
+ if (fh != NULL)
+ {
+ fclose (fh);
+ fh = NULL;
+ }
+
+ /* thread information and load */
+ len = ssnprintf (file, sizeof (file),
+ PROCDIR "/%s/cvirt", dent->d_name);
+ if ((len < 0) || ((size_t) len >= sizeof (file)))
+ continue;
+
+ if (NULL == (fh = fopen (file, "r")))
+ {
+ char errbuf[1024];
+ ERROR ("Cannot open '%s': %s", file,
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ }
+
+ while ((fh != NULL) && (NULL != fgets (buffer, BUFSIZE, fh)))
+ {
+ int n = strsplit (buffer, cols, 4);
+
+ if (2 == n)
+ {
+ char *type_instance;
+ gauge_t value;
+
+ if (0 == strcmp (cols[0], "nr_threads:"))
+ type_instance = "total";
+ else if (0 == strcmp (cols[0], "nr_running:"))
+ type_instance = "running";
+ else if (0 == strcmp (cols[0], "nr_unintr:"))
+ type_instance = "uninterruptable";
+ else if (0 == strcmp (cols[0], "nr_onhold:"))
+ type_instance = "onhold";
+ else
+ continue;
+
+ value = atof (cols[1]);
+ submit_gauge (dent->d_name, "vs_threads", type_instance, value);
+ }
+ else if (4 == n) {
+ if (0 == strcmp (cols[0], "loadavg:"))
+ {
+ gauge_t snum = atof (cols[1]);
+ gauge_t mnum = atof (cols[2]);
+ gauge_t lnum = atof (cols[3]);
+ load_submit (dent->d_name, snum, mnum, lnum);
+ }
+ }
+ } /* while (fgets) */
+
+ if (fh != NULL)
+ {
+ fclose (fh);
+ fh = NULL;
+ }
+
+ /* processes and memory usage */
+ len = ssnprintf (file, sizeof (file),
+ PROCDIR "/%s/limit", dent->d_name);
+ if ((len < 0) || ((size_t) len >= sizeof (file)))
+ continue;
+
+ if (NULL == (fh = fopen (file, "r")))
+ {
+ char errbuf[1024];
+ ERROR ("Cannot open '%s': %s", file,
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ }
+
+ while ((fh != NULL) && (NULL != fgets (buffer, BUFSIZE, fh)))
+ {
+ char *type = "vs_memory";
+ char *type_instance;
+ gauge_t value;
+
+ if (strsplit (buffer, cols, 2) < 2)
+ continue;
+
+ if (0 == strcmp (cols[0], "PROC:"))
+ {
+ type = "vs_processes";
+ type_instance = "";
+ value = atof (cols[1]);
+ }
+ else
+ {
+ if (0 == strcmp (cols[0], "VM:"))
+ type_instance = "vm";
+ else if (0 == strcmp (cols[0], "VML:"))
+ type_instance = "vml";
+ else if (0 == strcmp (cols[0], "RSS:"))
+ type_instance = "rss";
+ else if (0 == strcmp (cols[0], "ANON:"))
+ type_instance = "anon";
+ else
+ continue;
+
+ value = atof (cols[1]) * pagesize;
+ }
+
+ submit_gauge (dent->d_name, type, type_instance, value);
+ } /* while (fgets) */
+
+ if (fh != NULL)
+ {
+ fclose (fh);
+ fh = NULL;
+ }
+ } /* while (readdir) */
+
+ closedir (proc);
+
+ return (0);
+} /* int vserver_read */
+
+void module_register (void)
+{
+ plugin_register_init ("vserver", vserver_init);
+ plugin_register_read ("vserver", vserver_read);
+} /* void module_register(void) */
+
+/* vim: set ts=4 sw=4 noexpandtab : */