2 * collectd - src/common.c
3 * Copyright (C) 2005 Florian octo Forster
5 * This program is free software; you can redistribute it and/
6 * or modify it under the terms of the GNU General Public Li-
7 * cence as published by the Free Software Foundation; either
8 * version 2 of the Licence, or any later version.
10 * This program is distributed in the hope that it will be use-
11 * ful, but WITHOUT ANY WARRANTY; without even the implied war-
12 * ranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 * See the GNU General Public Licence for more details.
15 * You should have received a copy of the GNU General Public
16 * Licence along with this program; if not, write to the Free
17 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
21 * Florian octo Forster <octo at verplant.org>
22 * Niki W. Waibel <niki.waibel@gmx.net>
26 #include "utils_debug.h"
29 extern kstat_ctl_t *kc;
33 static char *rra_def[] =
35 "RRA:AVERAGE:0.2:6:1500",
36 "RRA:AVERAGE:0.1:180:1680",
37 "RRA:AVERAGE:0.1:2160:1520",
39 "RRA:MIN:0.1:180:1680",
40 "RRA:MIN:0.1:2160:1520",
42 "RRA:MAX:0.1:180:1680",
43 "RRA:MAX:0.1:2160:1520",
46 static int rra_num = 9;
47 #endif /* HAVE_LIBRRD */
50 sstrncpy(char *d, const char *s, int len)
57 sstrdup(const char *s)
61 DBG("Not enough memory.");
70 void *r = malloc(size);
72 DBG("Not enough memory.");
78 int strsplit (char *string, char **fields, size_t size)
85 while ((fields[i] = strtok (ptr, " \t")) != NULL)
98 int check_create_dir (char *dir)
102 if (stat (dir, &statbuf) == -1)
106 if (mkdir (dir, 0755) == -1)
108 syslog (LOG_ERR, "mkdir (%s): %s", dir, strerror (errno));
114 syslog (LOG_ERR, "stat (%s): %s", dir, strerror (errno));
118 else if (!S_ISDIR (statbuf.st_mode))
120 syslog (LOG_ERR, "stat %s: Not a directory!", dir);
127 int rrd_create_file (char *filename, char **ds_def, int ds_num)
134 argc = ds_num + rra_num + 4;
136 if ((argv = (char **) malloc (sizeof (char *) * (argc + 1))) == NULL)
138 syslog (LOG_ERR, "rrd_create failed: %s", strerror (errno));
148 for (i = 0; i < ds_num; i++)
149 argv[j++] = ds_def[i];
150 for (i = 0; i < rra_num; i++)
151 argv[j++] = rra_def[i];
154 optind = 0; /* bug in librrd? */
156 if (rrd_create (argc, argv) == -1)
158 syslog (LOG_ERR, "rrd_create failed: %s: %s", filename, rrd_get_error ());
166 #endif /* HAVE_LIBRRD */
168 int rrd_update_file (char *host, char *file, char *values,
169 char **ds_def, int ds_num)
173 char full_file[1024];
174 char *argv[4] = { "update", full_file, values, NULL };
176 /* host == NULL => local mode */
179 if (check_create_dir (host))
182 if (snprintf (full_file, 1024, "%s/%s", host, file) >= 1024)
187 if (snprintf (full_file, 1024, "%s", file) >= 1024)
191 if (stat (full_file, &statbuf) == -1)
195 if (rrd_create_file (full_file, ds_def, ds_num))
200 syslog (LOG_ERR, "stat %s: %s", full_file, strerror (errno));
204 else if (!S_ISREG (statbuf.st_mode))
206 syslog (LOG_ERR, "stat %s: Not a regular file!", full_file);
210 optind = 0; /* bug in librrd? */
212 if (rrd_update (3, argv) == -1)
214 syslog (LOG_WARNING, "rrd_update failed: %s: %s", full_file, rrd_get_error ());
217 #endif /* HAVE_LIBRRD */
223 int get_kstat (kstat_t **ksp_ptr, char *module, int instance, char *name)
230 snprintf (ident, 128, "%s,%i,%s", module, instance, name);
233 if (*ksp_ptr == NULL)
235 if ((*ksp_ptr = kstat_lookup (kc, module, instance, name)) == NULL)
237 syslog (LOG_ERR, "Cound not find kstat %s", ident);
241 if ((*ksp_ptr)->ks_type != KSTAT_TYPE_NAMED)
243 syslog (LOG_WARNING, "kstat %s has wrong type", ident);
250 assert (*ksp_ptr != NULL);
251 assert ((*ksp_ptr)->ks_type == KSTAT_TYPE_NAMED);
254 if (kstat_read (kc, *ksp_ptr, NULL) == -1)
256 syslog (LOG_WARNING, "kstat %s could not be read", ident);
260 if ((*ksp_ptr)->ks_type != KSTAT_TYPE_NAMED)
262 syslog (LOG_WARNING, "kstat %s has wrong type", ident);
269 long long get_kstat_value (kstat_t *ksp, char *name)
272 long long retval = -1LL;
275 assert (ksp != NULL);
276 assert (ksp->ks_type == KSTAT_TYPE_NAMED);
280 fprintf (stderr, "ERROR: %s:%i: ksp == NULL\n", __FILE__, __LINE__);
283 else if (ksp->ks_type != KSTAT_TYPE_NAMED)
285 fprintf (stderr, "ERROR: %s:%i: ksp->ks_type != KSTAT_TYPE_NAMED\n", __FILE__, __LINE__);
290 if ((kn = (kstat_named_t *) kstat_data_lookup (ksp, name)) == NULL)
293 if (kn->data_type == KSTAT_DATA_INT32)
294 retval = (long long) kn->value.i32;
295 else if (kn->data_type == KSTAT_DATA_UINT32)
296 retval = (long long) kn->value.ui32;
297 else if (kn->data_type == KSTAT_DATA_INT64)
298 retval = (long long) kn->value.i64; /* According to ANSI C99 `long long' must hold at least 64 bits */
299 else if (kn->data_type == KSTAT_DATA_UINT64)
300 retval = (long long) kn->value.ui64; /* XXX: Might overflow! */
302 syslog (LOG_WARNING, "get_kstat_value: Not a numeric value: %s", name);
306 #endif /* HAVE_LIBKSTAT */