From: octo Date: Mon, 12 Dec 2005 07:51:19 +0000 (+0000) Subject: Merged changes on `common.[ch]' from quota-branch to trunk X-Git-Tag: collectd-3.5.0~19 X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=32edd548f528fb119c7646eb9c194dc84672a05a;p=collectd.git Merged changes on `common.[ch]' from quota-branch to trunk --- diff --git a/src/common.c b/src/common.c new file mode 100644 index 00000000..d946cfb4 --- /dev/null +++ b/src/common.c @@ -0,0 +1,306 @@ +/** + * collectd - src/common.c + * Copyright (C) 2005 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 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. + * + * 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. + * + * Authors: + * Florian octo Forster + * Niki W. Waibel +**/ + +#include "common.h" +#include "utils_debug.h" + +#ifdef HAVE_LIBKSTAT +extern kstat_ctl_t *kc; +#endif + +#ifdef HAVE_LIBRRD +static char *rra_def[] = +{ + "RRA:AVERAGE:0.2:6:1500", + "RRA:AVERAGE:0.1:180:1680", + "RRA:AVERAGE:0.1:2160:1520", + "RRA:MIN:0.2:6:1500", + "RRA:MIN:0.1:180:1680", + "RRA:MIN:0.1:2160:1520", + "RRA:MAX:0.2:6:1500", + "RRA:MAX:0.1:180:1680", + "RRA:MAX:0.1:2160:1520", + NULL +}; +static int rra_num = 9; +#endif /* HAVE_LIBRRD */ + +void +sstrncpy(char *d, const char *s, int len) +{ + strncpy(d, s, len); + d[len - 1] = 0; +} + +char * +sstrdup(const char *s) +{ + char *r = strdup(s); + if(r == NULL) { + DBG("Not enough memory."); + exit(3); + } + return r; +} + +void * +smalloc(size_t size) +{ + void *r = malloc(size); + if(r == NULL) { + DBG("Not enough memory."); + exit(3); + } + return r; +} + +int strsplit (char *string, char **fields, size_t size) +{ + size_t i; + char *ptr; + + i = 0; + ptr = string; + while ((fields[i] = strtok (ptr, " \t")) != NULL) + { + ptr = NULL; + i++; + + if (i >= size) + break; + } + + return (i); +} + +#ifdef HAVE_LIBRRD +int check_create_dir (char *dir) +{ + struct stat statbuf; + + if (stat (dir, &statbuf) == -1) + { + if (errno == ENOENT) + { + if (mkdir (dir, 0755) == -1) + { + syslog (LOG_ERR, "mkdir %s: %s", dir, strerror (errno)); + return (-1); + } + } + else + { + syslog (LOG_ERR, "stat %s: %s", dir, strerror (errno)); + return (-1); + } + } + else if (!S_ISDIR (statbuf.st_mode)) + { + syslog (LOG_ERR, "stat %s: Not a directory!", dir); + return (-1); + } + + return (0); +} + +int rrd_create_file (char *filename, char **ds_def, int ds_num) +{ + char **argv; + int argc; + int i, j; + int status = 0; + + 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] = "10"; + + 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) +{ +#ifdef HAVE_LIBRRD + struct stat statbuf; + char full_file[1024]; + char *argv[4] = { "update", full_file, values, NULL }; + + /* host == NULL => local mode */ + if (host != NULL) + { + if (check_create_dir (host)) + return (-1); + + 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); + } +#endif /* HAVE_LIBRRD */ + + return (0); +} + +#ifdef HAVE_LIBKSTAT +int get_kstat (kstat_t **ksp_ptr, char *module, int instance, char *name) +{ + char ident[128]; + + if (kc == NULL) + return (-1); + + snprintf (ident, 128, "%s,%i,%s", module, instance, name); + ident[127] = '\0'; + + if (*ksp_ptr == NULL) + { + if ((*ksp_ptr = kstat_lookup (kc, module, instance, name)) == NULL) + { + syslog (LOG_ERR, "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); + *ksp_ptr = NULL; + return (-1); + } + } + +#ifdef assert + assert (*ksp_ptr != NULL); + assert ((*ksp_ptr)->ks_type == KSTAT_TYPE_NAMED); +#endif + + if (kstat_read (kc, *ksp_ptr, NULL) == -1) + { + syslog (LOG_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); + return (-1); + } + + return (0); +} + +long long get_kstat_value (kstat_t *ksp, char *name) +{ + kstat_named_t *kn; + long long retval = -1LL; + +#ifdef assert + assert (ksp != NULL); + assert (ksp->ks_type == KSTAT_TYPE_NAMED); +#else + if (ksp == NULL) + { + fprintf (stderr, "ERROR: %s:%i: ksp == NULL\n", __FILE__, __LINE__); + return (-1LL); + } + else if (ksp->ks_type != KSTAT_TYPE_NAMED) + { + fprintf (stderr, "ERROR: %s:%i: ksp->ks_type != KSTAT_TYPE_NAMED\n", __FILE__, __LINE__); + return (-1LL); + } +#endif + + if ((kn = (kstat_named_t *) kstat_data_lookup (ksp, name)) == NULL) + return (retval); + + if (kn->data_type == KSTAT_DATA_INT32) + retval = (long long) kn->value.i32; + else if (kn->data_type == KSTAT_DATA_UINT32) + retval = (long long) kn->value.ui32; + else if (kn->data_type == KSTAT_DATA_INT64) + retval = (long long) kn->value.i64; /* According to ANSI C99 `long long' must hold at least 64 bits */ + 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); + + return (retval); +} +#endif /* HAVE_LIBKSTAT */ diff --git a/src/common.h b/src/common.h new file mode 100644 index 00000000..a3fe5fde --- /dev/null +++ b/src/common.h @@ -0,0 +1,50 @@ +/** + * collectd - src/common.h + * Copyright (C) 2005 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 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. + * + * 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. + * + * Authors: + * Florian octo Forster + * Niki W. Waibel +**/ + +#ifndef COMMON_H +#define COMMON_H + +#include "collectd.h" + +#define sfree(ptr) \ + if((ptr) != NULL) { \ + free(ptr); \ + } \ + (ptr) = NULL + +void sstrncpy(char *d, const char *s, int len); +char *sstrdup(const char *s); +void *smalloc(size_t size); + +int strsplit (char *string, char **fields, size_t size); + +int rrd_update_file (char *host, char *file, char *values, char **ds_def, + int ds_num); + +#ifdef HAVE_LIBKSTAT +int get_kstat (kstat_t **ksp_ptr, char *module, int instance, char *name); +long long get_kstat_value (kstat_t *ksp, char *name); +#endif + +#endif /* COMMON_H */