1 /**
2 * collectd - src/df.c
3 * Copyright (C) 2005-2007 Florian octo Forster
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the License is applicable.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 *
18 * Authors:
19 * Florian octo Forster <octo at verplant.org>
20 **/
22 #include "collectd.h"
23 #include "common.h"
24 #include "plugin.h"
25 #include "configfile.h"
26 #include "utils_mount.h"
27 #include "utils_ignorelist.h"
29 #if HAVE_STATVFS
30 # if HAVE_SYS_STATVFS_H
31 # include <sys/statvfs.h>
32 # endif
33 # define STATANYFS statvfs
34 # define BLOCKSIZE(s) ((s).f_frsize ? (s).f_frsize : (s).f_bsize)
35 #elif HAVE_STATFS
36 # if HAVE_SYS_STATFS_H
37 # include <sys/statfs.h>
38 # endif
39 # define STATANYFS statfs
40 # define BLOCKSIZE(s) (s).f_bsize
41 #else
42 # error "No applicable input method."
43 #endif
45 static const char *config_keys[] =
46 {
47 "Device",
48 "MountPoint",
49 "FSType",
50 "IgnoreSelected",
51 NULL
52 };
53 static int config_keys_num = 4;
55 static ignorelist_t *il_device = NULL;
56 static ignorelist_t *il_mountpoint = NULL;
57 static ignorelist_t *il_fstype = NULL;
59 static int df_init (void)
60 {
61 if (il_device == NULL)
62 il_device = ignorelist_create (1);
63 if (il_mountpoint == NULL)
64 il_mountpoint = ignorelist_create (1);
65 if (il_fstype == NULL)
66 il_fstype = ignorelist_create (1);
68 return (0);
69 }
71 static int df_config (const char *key, const char *value)
72 {
73 df_init ();
75 if (strcasecmp (key, "Device") == 0)
76 {
77 if (ignorelist_add (il_device, value))
78 return (1);
79 return (0);
80 }
81 else if (strcasecmp (key, "MountPoint") == 0)
82 {
83 if (ignorelist_add (il_mountpoint, value))
84 return (1);
85 return (0);
86 }
87 else if (strcasecmp (key, "FSType") == 0)
88 {
89 if (ignorelist_add (il_fstype, value))
90 return (1);
91 return (0);
92 }
93 else if (strcasecmp (key, "IgnoreSelected") == 0)
94 {
95 if ((strcasecmp (value, "True") == 0)
96 || (strcasecmp (value, "Yes") == 0)
97 || (strcasecmp (value, "On") == 0))
98 {
99 ignorelist_set_invert (il_device, 0);
100 ignorelist_set_invert (il_mountpoint, 0);
101 ignorelist_set_invert (il_fstype, 0);
102 }
103 else
104 {
105 ignorelist_set_invert (il_device, 1);
106 ignorelist_set_invert (il_mountpoint, 1);
107 ignorelist_set_invert (il_fstype, 1);
108 }
109 return (0);
110 }
112 return (-1);
113 }
115 static void df_submit (char *df_name,
116 gauge_t df_used,
117 gauge_t df_free)
118 {
119 value_t values[2];
120 value_list_t vl = VALUE_LIST_INIT;
122 values[0].gauge = df_used;
123 values[1].gauge = df_free;
125 vl.values = values;
126 vl.values_len = 2;
127 vl.time = time (NULL);
128 strcpy (vl.host, hostname_g);
129 strcpy (vl.plugin, "df");
130 strcpy (vl.plugin_instance, "");
131 strncpy (vl.type_instance, df_name, sizeof (vl.type_instance));
133 plugin_dispatch_values ("df", &vl);
134 } /* void df_submit */
136 static int df_read (void)
137 {
138 #if HAVE_STATVFS
139 struct statvfs statbuf;
140 #elif HAVE_STATFS
141 struct statfs statbuf;
142 #endif
143 /* struct STATANYFS statbuf; */
144 cu_mount_t *mnt_list;
145 cu_mount_t *mnt_ptr;
147 unsigned long long blocksize;
148 gauge_t df_free;
149 gauge_t df_used;
150 char mnt_name[256];
152 mnt_list = NULL;
153 if (cu_mount_getlist (&mnt_list) == NULL)
154 return (-1);
156 for (mnt_ptr = mnt_list; mnt_ptr != NULL; mnt_ptr = mnt_ptr->next)
157 {
158 if (STATANYFS (mnt_ptr->dir, &statbuf) < 0)
159 {
160 char errbuf[1024];
161 ERROR ("statv?fs failed: %s",
162 sstrerror (errno, errbuf,
163 sizeof (errbuf)));
164 continue;
165 }
167 if (!statbuf.f_blocks)
168 continue;
170 blocksize = BLOCKSIZE(statbuf);
171 df_free = statbuf.f_bfree * blocksize;
172 df_used = (statbuf.f_blocks - statbuf.f_bfree) * blocksize;
174 if (strcmp (mnt_ptr->dir, "/") == 0)
175 {
176 strncpy (mnt_name, "root", sizeof (mnt_name));
177 }
178 else
179 {
180 int i, len;
182 strncpy (mnt_name, mnt_ptr->dir + 1, sizeof (mnt_name));
183 len = strlen (mnt_name);
185 for (i = 0; i < len; i++)
186 if (mnt_name[i] == '/')
187 mnt_name[i] = '-';
188 }
190 if (ignorelist_match (il_device,
191 (mnt_ptr->spec_device != NULL)
192 ? mnt_ptr->spec_device
193 : mnt_ptr->device))
194 continue;
195 if (ignorelist_match (il_mountpoint, mnt_ptr->dir))
196 continue;
197 if (ignorelist_match (il_fstype, mnt_ptr->type))
198 continue;
200 df_submit (mnt_name, df_used, df_free);
201 }
203 cu_mount_freelist (mnt_list);
205 return (0);
206 } /* int df_read */
208 void module_register (void)
209 {
210 plugin_register_config ("df", df_config,
211 config_keys, config_keys_num);
212 plugin_register_init ("df", df_init);
213 plugin_register_read ("df", df_read);
214 } /* void module_register */