/**
* collectd - src/common.c
- * Copyright (C) 2005,2006 Florian octo Forster
+ * Copyright (C) 2005-2007 Florian octo Forster
*
- * This program is free software; you can redistribute it and/
- * or modify it under the terms of the GNU General Public Li-
- * cence as published by the Free Software Foundation; either
- * version 2 of the Licence, or any later version.
+ * 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; only version 2 of the License is applicable.
*
- * This program is distributed in the hope that it will be use-
- * ful, but WITHOUT ANY WARRANTY; without even the implied war-
- * ranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- * See the GNU General Public Licence for more details.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
*
- * You should have received a copy of the GNU General Public
- * Licence along with this program; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
- * USA.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors:
* Florian octo Forster <octo at verplant.org>
#endif
#include "common.h"
-#include "utils_debug.h"
+#include "plugin.h"
#ifdef HAVE_MATH_H
# include <math.h>
#endif
-extern int operating_mode;
+/* for ntohl and htonl */
+#if HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
#ifdef HAVE_LIBKSTAT
extern kstat_ctl_t *kc;
#endif
-#ifdef HAVE_LIBRRD
-#if 0
-static char *rra_def[] =
-{
- "RRA:AVERAGE:0.0:1:1500",
- "RRA:AVERAGE:0.2:6:1500",
- "RRA:AVERAGE:0.1:180:1680",
- "RRA:AVERAGE:0.1:2160:1520",
- "RRA:MIN:0.0:1:1500",
- "RRA:MIN:0.2:6:1500",
- "RRA:MIN:0.1:180:1680",
- "RRA:MIN:0.1:2160:1520",
- "RRA:MAX:0.0:1:1500",
- "RRA:MAX:0.2:6:1500",
- "RRA:MAX:0.1:180:1680",
- "RRA:MAX:0.1:2160:1520",
- NULL
-};
-static int rra_num = 12;
-#endif
-
-static int rra_timespans[] =
-{
- 3600,
- 86400,
- 604800,
- 2678400,
- 31622400,
- 0
-};
-static int rra_timespans_num = 5;
-
-static char *rra_types[] =
-{
- "AVERAGE",
- "MIN",
- "MAX",
- NULL
-};
-static int rra_types_num = 3;
-#endif /* HAVE_LIBRRD */
-
void sstrncpy (char *d, const char *s, int len)
{
strncpy (d, s, len);
if((r = strdup (s)) == NULL)
{
- DBG ("Not enough memory.");
+ DEBUG ("Not enough memory.");
exit(3);
}
return (r);
}
+/* Don't use the return value of `strerror_r', because the GNU-people got
+ * inventive there.. -octo */
+char *sstrerror (int errnum, char *buf, size_t buflen)
+{
+ buf[0] = '\0';
+ strerror_r (errnum, buf, buflen);
+ return (buf);
+} /* char *sstrerror */
+
void *smalloc (size_t size)
{
void *r;
if ((r = malloc (size)) == NULL)
{
- DBG("Not enough memory.");
+ DEBUG("Not enough memory.");
exit(3);
}
if (status == 0)
{
- DBG ("Received EOF from fd %i. "
+ DEBUG ("Received EOF from fd %i. "
"Closing fd and returning error.",
fd);
close (fd);
{
size_t i;
char *ptr;
+ char *saveptr;
i = 0;
ptr = string;
- while ((fields[i] = strtok (ptr, " \t")) != NULL)
+ saveptr = NULL;
+ while ((fields[i] = strtok_r (ptr, " \t", &saveptr)) != NULL)
{
ptr = NULL;
i++;
return (0);
}
-static int check_create_dir (const char *file_orig)
+int check_create_dir (const char *file_orig)
{
struct stat statbuf;
char *fields[16];
int fields_num;
char *ptr;
+ char *saveptr;
int last_is_file = 1;
+ int path_is_absolute = 0;
int len;
int i;
*/
if (file_orig[len - 1] == '/')
last_is_file = 0;
+ if (file_orig[0] == '/')
+ path_is_absolute = 1;
/*
- * Create a copy for `strtok' to destroy
+ * Create a copy for `strtok_r' to destroy
*/
strncpy (file_copy, file_orig, 512);
file_copy[511] = '\0';
* remove leading and trailing slashes..
*/
ptr = file_copy;
+ saveptr = NULL;
fields_num = 0;
- while ((fields[fields_num] = strtok (ptr, "/")) != NULL)
+ while ((fields[fields_num] = strtok_r (ptr, "/", &saveptr)) != NULL)
{
ptr = NULL;
fields_num++;
*/
if (fields[i][0] == '.')
{
- syslog (LOG_ERR, "Cowardly refusing to create a directory that begins with a `.' (dot): `%s'", file_orig);
+ ERROR ("Cowardly refusing to create a directory that begins with a `.' (dot): `%s'", file_orig);
return (-2);
}
/*
* Join the components together again
*/
- if (strjoin (dir, dir_len, fields, i + 1, "/") < 0)
+ dir[0] = '/';
+ if (strjoin (dir + path_is_absolute, dir_len - path_is_absolute,
+ fields, i + 1, "/") < 0)
{
- syslog (LOG_ERR, "strjoin failed: `%s', component #%i", file_orig, i);
+ ERROR ("strjoin failed: `%s', component #%i", file_orig, i);
return (-1);
}
{
if (mkdir (dir, 0755) == -1)
{
- syslog (LOG_ERR, "mkdir (%s): %s", dir, strerror (errno));
+ char errbuf[1024];
+ ERROR ("mkdir (%s): %s", dir,
+ sstrerror (errno,
+ errbuf, sizeof (errbuf)));
return (-1);
}
}
else
{
- syslog (LOG_ERR, "stat (%s): %s", dir, strerror (errno));
+ char errbuf[1024];
+ ERROR ("stat (%s): %s", dir,
+ sstrerror (errno, errbuf,
+ sizeof (errbuf)));
return (-1);
}
}
else if (!S_ISDIR (statbuf.st_mode))
{
- syslog (LOG_ERR, "stat (%s): Not a directory!", dir);
+ ERROR ("stat (%s): Not a directory!", dir);
return (-1);
}
}
return (0);
}
-/* * * * *
- * Magic *
- * * * * */
-#if HAVE_LIBRRD
-static int rra_get (char ***ret)
-{
- static char **rra_def = NULL;
- static int rra_num = 0;
-
- int rra_max = rra_timespans_num * rra_types_num;
-
- int step;
- int rows;
- int span;
-
- int cdp_num;
- int cdp_len;
- int i, j;
-
- char buffer[64];
-
- if ((rra_num != 0) && (rra_def != NULL))
- {
- *ret = rra_def;
- return (rra_num);
- }
-
- if ((rra_def = (char **) malloc ((rra_max + 1) * sizeof (char *))) == NULL)
- return (-1);
- memset (rra_def, '\0', (rra_max + 1) * sizeof (char *));
-
- step = atoi (COLLECTD_STEP);
- rows = atoi (COLLECTD_ROWS);
-
- if ((step <= 0) || (rows <= 0))
- {
- *ret = NULL;
- return (-1);
- }
-
- cdp_len = 0;
- for (i = 0; i < rra_timespans_num; i++)
- {
- span = rra_timespans[i];
-
- if ((span / step) < rows)
- continue;
-
- if (cdp_len == 0)
- cdp_len = 1;
- else
- cdp_len = (int) floor (((double) span) / ((double) (rows * step)));
-
- cdp_num = (int) ceil (((double) span) / ((double) (cdp_len * step)));
-
- for (j = 0; j < rra_types_num; j++)
- {
- if (rra_num >= rra_max)
- break;
-
- if (snprintf (buffer, sizeof(buffer), "RRA:%s:%3.1f:%u:%u",
- rra_types[j], COLLECTD_XFF,
- cdp_len, cdp_num) >= sizeof (buffer))
- {
- syslog (LOG_ERR, "rra_get: Buffer would have been truncated.");
- continue;
- }
-
- rra_def[rra_num++] = sstrdup (buffer);
- }
- }
-
-#if COLLECT_DEBUG
- DBG ("rra_num = %i", rra_num);
- for (i = 0; i < rra_num; i++)
- DBG (" %s", rra_def[i]);
-#endif
-
- *ret = rra_def;
- return (rra_num);
-}
-#endif /* HAVE_LIBRRD */
-
-static int log_create_file (char *filename, char **ds_def, int ds_num)
-{
- FILE *log;
- int i;
-
- if (check_create_dir (filename))
- return (-1);
-
- log = fopen (filename, "w");
- if (log == NULL)
- {
- syslog (LOG_WARNING, "Failed to create %s: %s", filename,
- strerror(errno));
- return (-1);
- }
-
- fprintf (log, "epoch");
- for (i = 0; i < ds_num; i++)
- {
- char *name;
- char *tmp;
-
- name = strchr (ds_def[i], ':');
- if (name == NULL)
- {
- syslog (LOG_WARNING, "Invalid DS definition '%s' for %s",
- ds_def[i], filename);
- fclose(log);
- remove(filename);
- return (-1);
- }
-
- name += 1;
- tmp = strchr (name, ':');
- if (tmp == NULL)
- {
- syslog (LOG_WARNING, "Invalid DS definition '%s' for %s",
- ds_def[i], filename);
- fclose(log);
- remove(filename);
- return (-1);
- }
-
- /* The `%.*s' is needed because there is no null-byte behind
- * the name. */
- fprintf(log, ",%.*s", (int) (tmp - name), name);
- }
- fprintf(log, "\n");
- fclose(log);
-
- return 0;
-}
-
-static int log_update_file (char *host, char *file, char *values,
- char **ds_def, int ds_num)
-{
- char *tmp;
- FILE *fp;
- struct stat statbuf;
- char full_file[1024];
-
- /* Cook the values a bit: Substitute colons with commas */
- strsubstitute (values, ':', ',');
-
- /* host == NULL => local mode */
- if (host != NULL)
- {
- if (snprintf (full_file, 1024, "%s/%s", host, file) >= 1024)
- return (-1);
- }
- else
- {
- if (snprintf (full_file, 1024, "%s", file) >= 1024)
- return (-1);
- }
-
- strncpy (full_file, file, 1024);
-
- tmp = full_file + strlen (full_file) - 4;
- assert ((tmp != NULL) && (tmp > full_file));
-
- /* Change the filename for logfiles. */
- if (strncmp (tmp, ".rrd", 4) == 0)
- {
- time_t now;
- struct tm *tm;
-
- /* TODO: Find a way to minimize the calls to `localtime', since
- * they are pretty expensive.. */
- now = time (NULL);
- tm = localtime (&now);
-
- strftime (tmp, 1024 - (tmp - full_file), "-%Y-%m-%d", tm);
-
- /* `localtime(3)' returns a pointer to static data,
- * therefore the pointer may not be free'd. */
- }
- else
- DBG ("The filename ends with `%s' which is unexpected.", tmp);
-
- if (stat (full_file, &statbuf) == -1)
- {
- if (errno == ENOENT)
- {
- if (log_create_file (full_file, ds_def, ds_num))
- return (-1);
- }
- else
- {
- syslog (LOG_ERR, "stat %s: %s", full_file, strerror (errno));
- return (-1);
- }
- }
- else if (!S_ISREG (statbuf.st_mode))
- {
- syslog (LOG_ERR, "stat %s: Not a regular file!", full_file);
- return (-1);
- }
-
-
- fp = fopen (full_file, "a");
- if (fp == NULL)
- {
- syslog (LOG_WARNING, "Failed to append to %s: %s", full_file,
- strerror(errno));
- return (-1);
- }
- fprintf(fp, "%s\n", values);
- fclose(fp);
-
- return (0);
-} /* int log_update_file */
-
-#if HAVE_LIBRRD
-static int rrd_create_file (char *filename, char **ds_def, int ds_num)
-{
- char **argv;
- int argc;
- char **rra_def;
- int rra_num;
- int i, j;
- int status = 0;
-
- if (check_create_dir (filename))
- return (-1);
-
- if ((rra_num = rra_get (&rra_def)) < 1)
- {
- syslog (LOG_ERR, "rra_create failed: Could not calculate RRAs");
- return (-1);
- }
-
- argc = ds_num + rra_num + 4;
-
- if ((argv = (char **) malloc (sizeof (char *) * (argc + 1))) == NULL)
- {
- syslog (LOG_ERR, "rrd_create failed: %s", strerror (errno));
- return (-1);
- }
-
- argv[0] = "create";
- argv[1] = filename;
- argv[2] = "-s";
- argv[3] = COLLECTD_STEP;
-
- j = 4;
- for (i = 0; i < ds_num; i++)
- argv[j++] = ds_def[i];
- for (i = 0; i < rra_num; i++)
- argv[j++] = rra_def[i];
- argv[j] = NULL;
-
- optind = 0; /* bug in librrd? */
- rrd_clear_error ();
- if (rrd_create (argc, argv) == -1)
- {
- syslog (LOG_ERR, "rrd_create failed: %s: %s", filename, rrd_get_error ());
- status = -1;
- }
-
- free (argv);
-
- return (status);
-}
-#endif /* HAVE_LIBRRD */
-
-int rrd_update_file (char *host, char *file, char *values,
- char **ds_def, int ds_num)
-{
-#if HAVE_LIBRRD
- struct stat statbuf;
- char full_file[1024];
- char *argv[4] = { "update", full_file, values, NULL };
-#endif /* HAVE_LIBRRD */
-
- /* I'd rather have a function `common_update_file' to make this
- * decission, but for that we'd need to touch all plugins.. */
- if (operating_mode == MODE_LOG)
- return (log_update_file (host, file, values,
- ds_def, ds_num));
-
-#if HAVE_LIBRRD
- /* host == NULL => local mode */
- if (host != NULL)
- {
- if (snprintf (full_file, 1024, "%s/%s", host, file) >= 1024)
- return (-1);
- }
- else
- {
- if (snprintf (full_file, 1024, "%s", file) >= 1024)
- return (-1);
- }
-
- if (stat (full_file, &statbuf) == -1)
- {
- if (errno == ENOENT)
- {
- if (rrd_create_file (full_file, ds_def, ds_num))
- return (-1);
- }
- else
- {
- syslog (LOG_ERR, "stat %s: %s", full_file, strerror (errno));
- return (-1);
- }
- }
- else if (!S_ISREG (statbuf.st_mode))
- {
- syslog (LOG_ERR, "stat %s: Not a regular file!", full_file);
- return (-1);
- }
-
- optind = 0; /* bug in librrd? */
- rrd_clear_error ();
- if (rrd_update (3, argv) == -1)
- {
- syslog (LOG_WARNING, "rrd_update failed: %s: %s", full_file, rrd_get_error ());
- return (-1);
- }
- return (0);
-/* #endif HAVE_LIBRRD */
-
-#else
- syslog (LOG_ERR, "`rrd_update_file' was called, but collectd isn't linked against librrd!");
- return (-1);
-#endif
-}
-
#ifdef HAVE_LIBKSTAT
int get_kstat (kstat_t **ksp_ptr, char *module, int instance, char *name)
{
{
if ((*ksp_ptr = kstat_lookup (kc, module, instance, name)) == NULL)
{
- syslog (LOG_ERR, "Cound not find kstat %s", ident);
+ ERROR ("Cound not find kstat %s", ident);
return (-1);
}
if ((*ksp_ptr)->ks_type != KSTAT_TYPE_NAMED)
{
- syslog (LOG_WARNING, "kstat %s has wrong type", ident);
+ WARNING ("kstat %s has wrong type", ident);
*ksp_ptr = NULL;
return (-1);
}
if (kstat_read (kc, *ksp_ptr, NULL) == -1)
{
- syslog (LOG_WARNING, "kstat %s could not be read", ident);
+ WARNING ("kstat %s could not be read", ident);
return (-1);
}
if ((*ksp_ptr)->ks_type != KSTAT_TYPE_NAMED)
{
- syslog (LOG_WARNING, "kstat %s has wrong type", ident);
+ WARNING ("kstat %s has wrong type", ident);
return (-1);
}
else if (kn->data_type == KSTAT_DATA_UINT64)
retval = (long long) kn->value.ui64; /* XXX: Might overflow! */
else
- syslog (LOG_WARNING, "get_kstat_value: Not a numeric value: %s", name);
+ WARNING ("get_kstat_value: Not a numeric value: %s", name);
return (retval);
}
#endif /* HAVE_LIBKSTAT */
+
+unsigned long long ntohll (unsigned long long n)
+{
+#if __BYTE_ORDER == __BIG_ENDIAN
+ return (n);
+#else
+ return (((unsigned long long) ntohl (n)) << 32) + ntohl (n >> 32);
+#endif
+} /* unsigned long long ntohll */
+
+unsigned long long htonll (unsigned long long n)
+{
+#if __BYTE_ORDER == __BIG_ENDIAN
+ return (n);
+#else
+ return (((unsigned long long) htonl (n)) << 32) + htonl (n >> 32);
+#endif
+} /* unsigned long long htonll */
+
+int format_name (char *ret, int ret_len,
+ const char *hostname,
+ const char *plugin, const char *plugin_instance,
+ const char *type, const char *type_instance)
+{
+ int status;
+
+ assert (plugin != NULL);
+ assert (type != NULL);
+
+ if ((plugin_instance == NULL) || (strlen (plugin_instance) == 0))
+ {
+ if ((type_instance == NULL) || (strlen (type_instance) == 0))
+ status = snprintf (ret, ret_len, "%s/%s/%s",
+ hostname, plugin, type);
+ else
+ status = snprintf (ret, ret_len, "%s/%s/%s-%s",
+ hostname, plugin, type,
+ type_instance);
+ }
+ else
+ {
+ if ((type_instance == NULL) || (strlen (type_instance) == 0))
+ status = snprintf (ret, ret_len, "%s/%s-%s/%s",
+ hostname, plugin, plugin_instance,
+ type);
+ else
+ status = snprintf (ret, ret_len, "%s/%s-%s/%s-%s",
+ hostname, plugin, plugin_instance,
+ type, type_instance);
+ }
+
+ if ((status < 1) || (status >= ret_len))
+ return (-1);
+ return (0);
+} /* int format_name */
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