3 * Copyright (C) 2005-2009 Florian octo Forster
4 * Copyright (C) 2009 Paul Sadauskas
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; only version 2 of the License is applicable.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * Florian octo Forster <octo at verplant.org>
21 * Paul Sadauskas <psadauskas at gmail.com>
27 #include "configfile.h"
28 #include "utils_mount.h"
29 #include "utils_ignorelist.h"
32 # if HAVE_SYS_STATVFS_H
33 # include <sys/statvfs.h>
35 # define STATANYFS statvfs
36 # define STATANYFS_STR "statvfs"
37 # define BLOCKSIZE(s) ((s).f_frsize ? (s).f_frsize : (s).f_bsize)
39 # if HAVE_SYS_STATFS_H
40 # include <sys/statfs.h>
42 # define STATANYFS statfs
43 # define STATANYFS_STR "statfs"
44 # define BLOCKSIZE(s) (s).f_bsize
46 # error "No applicable input method."
49 static const char *config_keys[] =
59 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
61 static ignorelist_t *il_device = NULL;
62 static ignorelist_t *il_mountpoint = NULL;
63 static ignorelist_t *il_fstype = NULL;
65 static _Bool by_device = false;
66 static _Bool report_reserved = false;
67 static _Bool report_inodes = false;
69 static int df_init (void)
71 if (il_device == NULL)
72 il_device = ignorelist_create (1);
73 if (il_mountpoint == NULL)
74 il_mountpoint = ignorelist_create (1);
75 if (il_fstype == NULL)
76 il_fstype = ignorelist_create (1);
81 static int df_config (const char *key, const char *value)
85 if (strcasecmp (key, "Device") == 0)
87 if (ignorelist_add (il_device, value))
91 else if (strcasecmp (key, "MountPoint") == 0)
93 if (ignorelist_add (il_mountpoint, value))
97 else if (strcasecmp (key, "FSType") == 0)
99 if (ignorelist_add (il_fstype, value))
103 else if (strcasecmp (key, "IgnoreSelected") == 0)
107 ignorelist_set_invert (il_device, 0);
108 ignorelist_set_invert (il_mountpoint, 0);
109 ignorelist_set_invert (il_fstype, 0);
113 ignorelist_set_invert (il_device, 1);
114 ignorelist_set_invert (il_mountpoint, 1);
115 ignorelist_set_invert (il_fstype, 1);
119 else if (strcasecmp (key, "ReportByDevice") == 0)
126 else if (strcasecmp (key, "ReportReserved") == 0)
129 report_reserved = true;
131 report_reserved = false;
135 else if (strcasecmp (key, "ReportInodes") == 0)
138 report_inodes = true;
140 report_inodes = false;
149 static void df_submit_two (char *df_name,
155 value_list_t vl = VALUE_LIST_INIT;
157 values[0].gauge = df_used;
158 values[1].gauge = df_free;
162 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
163 sstrncpy (vl.plugin, "df", sizeof (vl.plugin));
164 sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
165 sstrncpy (vl.type, type, sizeof (vl.type));
166 sstrncpy (vl.type_instance, df_name, sizeof (vl.type_instance));
168 plugin_dispatch_values (&vl);
169 } /* void df_submit_two */
171 __attribute__ ((nonnull(2)))
172 static void df_submit_one (char *plugin_instance,
173 const char *type, const char *type_instance,
177 value_list_t vl = VALUE_LIST_INIT;
179 values[0].gauge = value;
183 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
184 sstrncpy (vl.plugin, "df", sizeof (vl.plugin));
185 if (plugin_instance != NULL)
186 sstrncpy (vl.plugin_instance, plugin_instance,
187 sizeof (vl.plugin_instance));
188 sstrncpy (vl.type, type, sizeof (vl.type));
189 if (type_instance != NULL)
190 sstrncpy (vl.type_instance, type_instance,
191 sizeof (vl.type_instance));
193 plugin_dispatch_values (&vl);
194 } /* void df_submit_one */
196 static int df_read (void)
199 struct statvfs statbuf;
201 struct statfs statbuf;
203 /* struct STATANYFS statbuf; */
204 cu_mount_t *mnt_list;
208 if (cu_mount_getlist (&mnt_list) == NULL)
210 ERROR ("df plugin: cu_mount_getlist failed.");
214 for (mnt_ptr = mnt_list; mnt_ptr != NULL; mnt_ptr = mnt_ptr->next)
216 unsigned long long blocksize;
219 if (ignorelist_match (il_device,
220 (mnt_ptr->spec_device != NULL)
221 ? mnt_ptr->spec_device
224 if (ignorelist_match (il_mountpoint, mnt_ptr->dir))
226 if (ignorelist_match (il_fstype, mnt_ptr->type))
229 if (STATANYFS (mnt_ptr->dir, &statbuf) < 0)
232 ERROR (STATANYFS_STR"(%s) failed: %s",
234 sstrerror (errno, errbuf,
239 if (!statbuf.f_blocks)
244 /* eg, /dev/hda1 -- strip off the "/dev/" */
245 if (strncmp (mnt_ptr->spec_device, "/dev/", strlen ("/dev/")) == 0)
246 sstrncpy (disk_name, mnt_ptr->spec_device + strlen ("/dev/"), sizeof (disk_name));
248 sstrncpy (disk_name, mnt_ptr->spec_device, sizeof (disk_name));
250 if (strlen(disk_name) < 1)
252 DEBUG("df: no device name name for mountpoint %s, skipping", mnt_ptr->dir);
258 if (strcmp (mnt_ptr->dir, "/") == 0)
260 sstrncpy (disk_name, "root", sizeof (disk_name));
266 sstrncpy (disk_name, mnt_ptr->dir + 1, sizeof (disk_name));
267 len = strlen (disk_name);
269 for (i = 0; i < len; i++)
270 if (disk_name[i] == '/')
275 blocksize = BLOCKSIZE(statbuf);
280 uint64_t blk_reserved;
284 * Sanity-check for the values in the struct
286 /* Check for negative "available" byes. For example UFS can
287 * report negative free space for user. Notice. blk_reserved
288 * will start to diminish after this. */
290 /* Cast is needed to avoid compiler warnings.
291 * ((struct statvfs).f_bavail is unsigned (POSIX)) */
292 if (((int64_t) statbuf.f_bavail) < 0)
293 statbuf.f_bavail = 0;
295 if (statbuf.f_bavail < 0)
296 statbuf.f_bavail = 0;
298 /* Make sure that f_blocks >= f_bfree >= f_bavail */
299 if (statbuf.f_bfree < statbuf.f_bavail)
300 statbuf.f_bfree = statbuf.f_bavail;
301 if (statbuf.f_blocks < statbuf.f_bfree)
302 statbuf.f_blocks = statbuf.f_bfree;
304 blk_free = (uint64_t) statbuf.f_bavail;
305 blk_reserved = (uint64_t) (statbuf.f_bfree - statbuf.f_bavail);
306 blk_used = (uint64_t) (statbuf.f_blocks - statbuf.f_bfree);
308 df_submit_one (disk_name, "df_complex", "free",
309 (gauge_t) (blk_free * blocksize));
310 df_submit_one (disk_name, "df_complex", "reserved",
311 (gauge_t) (blk_reserved * blocksize));
312 df_submit_one (disk_name, "df_complex", "used",
313 (gauge_t) (blk_used * blocksize));
315 else /* compatibility code */
320 df_free = statbuf.f_bfree * blocksize;
321 df_used = (statbuf.f_blocks - statbuf.f_bfree) * blocksize;
323 df_submit_two (disk_name, "df", df_used, df_free);
330 uint64_t inode_reserved;
333 /* Sanity-check for the values in the struct */
334 if (statbuf.f_ffree < statbuf.f_favail)
335 statbuf.f_ffree = statbuf.f_favail;
336 if (statbuf.f_files < statbuf.f_ffree)
337 statbuf.f_files = statbuf.f_ffree;
339 inode_free = (uint64_t) statbuf.f_favail;
340 inode_reserved = (uint64_t) (statbuf.f_ffree - statbuf.f_favail);
341 inode_used = (uint64_t) (statbuf.f_files - statbuf.f_ffree);
343 df_submit_one (disk_name, "df_inodes", "free",
344 (gauge_t) inode_free);
345 df_submit_one (disk_name, "df_inodes", "reserved",
346 (gauge_t) inode_reserved);
347 df_submit_one (disk_name, "df_inodes", "used",
348 (gauge_t) inode_used);
352 cu_mount_freelist (mnt_list);
357 void module_register (void)
359 plugin_register_config ("df", df_config,
360 config_keys, config_keys_num);
361 plugin_register_init ("df", df_init);
362 plugin_register_read ("df", df_read);
363 } /* void module_register */