/**
* collectd - src/df.c
- * Copyright (C) 2005,2006 Florian octo Forster
+ * Copyright (C) 2005-2009 Florian octo Forster
+ * Copyright (C) 2009 Paul Sadauskas
*
* 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.
+ * Free Software Foundation; only version 2 of the License is applicable.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
*
* Authors:
* Florian octo Forster <octo at verplant.org>
+ * Paul Sadauskas <psadauskas at gmail.com>
**/
#include "collectd.h"
#include "utils_mount.h"
#include "utils_ignorelist.h"
-#define MODULE_NAME "df"
-
-#if HAVE_STATFS || HAVE_STATVFS
-# define DF_HAVE_READ 1
-#else
-# define DF_HAVE_READ 0
-#endif
-
#if HAVE_STATVFS
# if HAVE_SYS_STATVFS_H
# include <sys/statvfs.h>
# endif
# define STATANYFS statvfs
+# define STATANYFS_STR "statvfs"
# define BLOCKSIZE(s) ((s).f_frsize ? (s).f_frsize : (s).f_bsize)
#elif HAVE_STATFS
# if HAVE_SYS_STATFS_H
# include <sys/statfs.h>
# endif
# define STATANYFS statfs
+# define STATANYFS_STR "statfs"
# define BLOCKSIZE(s) (s).f_bsize
+#else
+# error "No applicable input method."
#endif
-static char *filename_template = "df-%s.rrd";
-
-static char *ds_def[] =
-{
- "DS:used:GAUGE:"COLLECTD_HEARTBEAT":0:U",
- "DS:free:GAUGE:"COLLECTD_HEARTBEAT":0:U",
- NULL
-};
-static int ds_num = 2;
-
-static char *config_keys[] =
+static const char *config_keys[] =
{
"Device",
"MountPoint",
"FSType",
"IgnoreSelected",
- NULL
+ "ReportByDevice",
+ "ReportReserved",
+ "ReportInodes"
};
-static int config_keys_num = 4;
+static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
static ignorelist_t *il_device = NULL;
static ignorelist_t *il_mountpoint = NULL;
static ignorelist_t *il_fstype = NULL;
-#define BUFSIZE 512
+static _Bool by_device = 0;
+static _Bool report_inodes = 0;
-static void df_init (void)
+static int df_init (void)
{
if (il_device == NULL)
il_device = ignorelist_create (1);
if (il_fstype == NULL)
il_fstype = ignorelist_create (1);
- return;
+ return (0);
}
-static int df_config (char *key, char *value)
+static int df_config (const char *key, const char *value)
{
df_init ();
}
else if (strcasecmp (key, "IgnoreSelected") == 0)
{
- if ((strcasecmp (value, "True") == 0)
- || (strcasecmp (value, "Yes") == 0)
- || (strcasecmp (value, "On") == 0))
+ if (IS_TRUE (value))
{
ignorelist_set_invert (il_device, 0);
ignorelist_set_invert (il_mountpoint, 0);
}
return (0);
}
+ else if (strcasecmp (key, "ReportByDevice") == 0)
+ {
+ if (IS_TRUE (value))
+ by_device = 1;
- return (-1);
-}
+ return (0);
+ }
+ else if (strcasecmp (key, "ReportInodes") == 0)
+ {
+ if (IS_TRUE (value))
+ report_inodes = 1;
+ else
+ report_inodes = 0;
-static void df_write (char *host, char *inst, char *val)
-{
- char file[BUFSIZE];
- int status;
+ return (0);
+ }
- status = snprintf (file, BUFSIZE, filename_template, inst);
- if (status < 1)
- return;
- else if (status >= BUFSIZE)
- return;
- rrd_update_file (host, file, val, ds_def, ds_num);
+ return (-1);
}
-#if DF_HAVE_READ
-static void df_submit (char *df_name,
- unsigned long long df_used,
- unsigned long long df_free)
+__attribute__ ((nonnull(2)))
+static void df_submit_one (char *plugin_instance,
+ const char *type, const char *type_instance,
+ gauge_t value)
{
- char buf[BUFSIZE];
-
- if (snprintf (buf, BUFSIZE, "%u:%llu:%llu", (unsigned int) curtime,
- df_used, df_free) >= BUFSIZE)
- return;
-
- plugin_submit (MODULE_NAME, df_name, buf);
-}
-
-static void df_read (void)
+ value_t values[1];
+ value_list_t vl = VALUE_LIST_INIT;
+
+ values[0].gauge = value;
+
+ vl.values = values;
+ vl.values_len = 1;
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "df", sizeof (vl.plugin));
+ if (plugin_instance != NULL)
+ sstrncpy (vl.plugin_instance, plugin_instance,
+ sizeof (vl.plugin_instance));
+ sstrncpy (vl.type, type, sizeof (vl.type));
+ if (type_instance != NULL)
+ sstrncpy (vl.type_instance, type_instance,
+ sizeof (vl.type_instance));
+
+ plugin_dispatch_values (&vl);
+} /* void df_submit_one */
+
+static int df_read (void)
{
#if HAVE_STATVFS
struct statvfs statbuf;
cu_mount_t *mnt_list;
cu_mount_t *mnt_ptr;
- unsigned long long blocksize;
- unsigned long long df_free;
- unsigned long long df_used;
- char mnt_name[BUFSIZE];
-
mnt_list = NULL;
if (cu_mount_getlist (&mnt_list) == NULL)
- return;
+ {
+ ERROR ("df plugin: cu_mount_getlist failed.");
+ return (-1);
+ }
for (mnt_ptr = mnt_list; mnt_ptr != NULL; mnt_ptr = mnt_ptr->next)
{
+ unsigned long long blocksize;
+ char disk_name[256];
+ uint64_t blk_free;
+ uint64_t blk_reserved;
+ uint64_t blk_used;
+
+ if (ignorelist_match (il_device,
+ (mnt_ptr->spec_device != NULL)
+ ? mnt_ptr->spec_device
+ : mnt_ptr->device))
+ continue;
+ if (ignorelist_match (il_mountpoint, mnt_ptr->dir))
+ continue;
+ if (ignorelist_match (il_fstype, mnt_ptr->type))
+ continue;
+
if (STATANYFS (mnt_ptr->dir, &statbuf) < 0)
{
- syslog (LOG_ERR, "statv?fs failed: %s", strerror (errno));
+ char errbuf[1024];
+ ERROR (STATANYFS_STR"(%s) failed: %s",
+ mnt_ptr->dir,
+ sstrerror (errno, errbuf,
+ sizeof (errbuf)));
continue;
}
if (!statbuf.f_blocks)
continue;
- blocksize = BLOCKSIZE(statbuf);
- df_free = statbuf.f_bfree * blocksize;
- df_used = (statbuf.f_blocks - statbuf.f_bfree) * blocksize;
-
- if (strcmp (mnt_ptr->dir, "/") == 0)
+ if (by_device)
{
- strncpy (mnt_name, "root", BUFSIZE);
- }
- else
+ /* eg, /dev/hda1 -- strip off the "/dev/" */
+ if (strncmp (mnt_ptr->spec_device, "/dev/", strlen ("/dev/")) == 0)
+ sstrncpy (disk_name, mnt_ptr->spec_device + strlen ("/dev/"), sizeof (disk_name));
+ else
+ sstrncpy (disk_name, mnt_ptr->spec_device, sizeof (disk_name));
+
+ if (strlen(disk_name) < 1)
+ {
+ DEBUG("df: no device name name for mountpoint %s, skipping", mnt_ptr->dir);
+ continue;
+ }
+ }
+ else
{
- int i, len;
-
- strncpy (mnt_name, mnt_ptr->dir + 1, BUFSIZE);
- len = strlen (mnt_name);
-
- for (i = 0; i < len; i++)
- if (mnt_name[i] == '/')
- mnt_name[i] = '-';
+ if (strcmp (mnt_ptr->dir, "/") == 0)
+ {
+ sstrncpy (disk_name, "root", sizeof (disk_name));
+ }
+ else
+ {
+ int i, len;
+
+ sstrncpy (disk_name, mnt_ptr->dir + 1, sizeof (disk_name));
+ len = strlen (disk_name);
+
+ for (i = 0; i < len; i++)
+ if (disk_name[i] == '/')
+ disk_name[i] = '-';
+ }
}
- if (ignorelist_match (il_device,
- (mnt_ptr->spec_device != NULL)
- ? mnt_ptr->spec_device
- : mnt_ptr->device))
- continue;
- if (ignorelist_match (il_mountpoint, mnt_ptr->dir))
- continue;
- if (ignorelist_match (il_fstype, mnt_ptr->type))
- continue;
+ blocksize = BLOCKSIZE(statbuf);
- df_submit (mnt_name, df_used, df_free);
+ /*
+ * Sanity-check for the values in the struct
+ */
+ /* Check for negative "available" byes. For example UFS can
+ * report negative free space for user. Notice. blk_reserved
+ * will start to diminish after this. */
+#if HAVE_STATVFS
+ /* Cast and temporary variable are needed to avoid
+ * compiler warnings.
+ * ((struct statvfs).f_bavail is unsigned (POSIX)) */
+ int64_t signed_bavail = (int64_t) statbuf.f_bavail;
+ if (signed_bavail < 0)
+ statbuf.f_bavail = 0;
+#elif HAVE_STATFS
+ if (statbuf.f_bavail < 0)
+ statbuf.f_bavail = 0;
+#endif
+ /* Make sure that f_blocks >= f_bfree >= f_bavail */
+ if (statbuf.f_bfree < statbuf.f_bavail)
+ statbuf.f_bfree = statbuf.f_bavail;
+ if (statbuf.f_blocks < statbuf.f_bfree)
+ statbuf.f_blocks = statbuf.f_bfree;
+
+ blk_free = (uint64_t) statbuf.f_bavail;
+ blk_reserved = (uint64_t) (statbuf.f_bfree - statbuf.f_bavail);
+ blk_used = (uint64_t) (statbuf.f_blocks - statbuf.f_bfree);
+
+ df_submit_one (disk_name, "df_complex", "free",
+ (gauge_t) (blk_free * blocksize));
+ df_submit_one (disk_name, "df_complex", "reserved",
+ (gauge_t) (blk_reserved * blocksize));
+ df_submit_one (disk_name, "df_complex", "used",
+ (gauge_t) (blk_used * blocksize));
+
+ /* inode handling */
+ if (report_inodes)
+ {
+ uint64_t inode_free;
+ uint64_t inode_reserved;
+ uint64_t inode_used;
+
+ /* Sanity-check for the values in the struct */
+ if (statbuf.f_ffree < statbuf.f_favail)
+ statbuf.f_ffree = statbuf.f_favail;
+ if (statbuf.f_files < statbuf.f_ffree)
+ statbuf.f_files = statbuf.f_ffree;
+
+ inode_free = (uint64_t) statbuf.f_favail;
+ inode_reserved = (uint64_t) (statbuf.f_ffree - statbuf.f_favail);
+ inode_used = (uint64_t) (statbuf.f_files - statbuf.f_ffree);
+
+ df_submit_one (disk_name, "df_inodes", "free",
+ (gauge_t) inode_free);
+ df_submit_one (disk_name, "df_inodes", "reserved",
+ (gauge_t) inode_reserved);
+ df_submit_one (disk_name, "df_inodes", "used",
+ (gauge_t) inode_used);
+ }
}
cu_mount_freelist (mnt_list);
-} /* static void df_read (void) */
-#else
-# define df_read NULL
-#endif /* DF_HAVE_READ */
+
+ return (0);
+} /* int df_read */
void module_register (void)
{
- plugin_register (MODULE_NAME, df_init, df_read, df_write);
- cf_register (MODULE_NAME, df_config, config_keys, config_keys_num);
-}
-
-#undef BUFSIZE
-#undef MODULE_NAME
+ plugin_register_config ("df", df_config,
+ config_keys, config_keys_num);
+ plugin_register_init ("df", df_init);
+ plugin_register_read ("df", df_read);
+} /* void module_register */
projects / collectd.git / blobdiff