usr.sbin/nscd/config.h

   1 /*-
   2  * Copyright (c) 2005 Michael Bushkov <bushman@rsu.ru>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/usr.sbin/nscd/config.h,v 1.3 2007/09/27 12:30:11 bushman Exp $
  27  */
  28
  29 #ifndef __NSCD_CONFIG_H__
  30 #define __NSCD_CONFIG_H__
  31
  32 #include <sys/stat.h>
  33 #include <sys/types.h>
  34 #include <pthread.h>
  35 #include <nsswitch.h>
  36 #include <unistd.h>
  37 #include "cachelib.h"
  38
  39 #define DEFAULT_QUERY_TIMEOUT           8
  40 #define DEFAULT_THREADS_NUM             8
  41
  42 #define DEFAULT_COMMON_ENTRY_TIMEOUT    10
  43 #define DEFAULT_MP_ENTRY_TIMEOUT        60
  44 #define DEFAULT_CACHE_HT_SIZE           257
  45
  46 #define INITIAL_ENTRIES_CAPACITY        8
  47 #define DEFAULT_SOCKET_PATH             "/var/run/nscd"
  48 #define DEFAULT_PIDFILE_PATH            "/var/run/nscd.pid"
  49
  50 #define DEFAULT_POSITIVE_ELEMENTS_SIZE  (2048)
  51 #define DEFAULT_POSITIVE_LIFETIME       (3600)
  52
  53 #define DEFAULT_NEGATIVE_ELEMENTS_SIZE  (2048)
  54 #define DEFAULT_NEGATIVE_LIFETIME       (60)
  55
  56 #define DEFAULT_MULTIPART_ELEMENTS_SIZE (1024 * 8)
  57 #define DEFAULT_MULITPART_SESSIONS_SIZE (1024)
  58 #define DEFAULT_MULITPART_LIFETIME      (3600)
  59
  60 extern const char *c_default_entries[6];
  61
  62 /*
  63  * Configuration entry represents the details of each cache entry in the
  64  * config file (i.e. passwd or group). Its purpose also is to acquire locks
  65  * of three different types (for usual read/write caching, for multipart
  66  * caching and for caching of the negative results) for that cache entry.
  67  */
  68 struct configuration_entry {
  69         struct common_cache_entry_params positive_cache_params;
  70         struct common_cache_entry_params negative_cache_params;
  71         struct mp_cache_entry_params mp_cache_params;
  72
  73         /*
  74          * configuration_entry holds pointers for all actual cache_entries,
  75          * which are used for it. There is one for positive caching, one for
  76          * for negative caching, and several (one per each euid/egid) for
  77          * multipart caching.
  78          */
  79         cache_entry positive_cache_entry;
  80         cache_entry negative_cache_entry;
  81
  82         cache_entry *mp_cache_entries;
  83         size_t mp_cache_entries_size;
  84
  85         struct timeval common_query_timeout;
  86         struct timeval mp_query_timeout;
  87
  88         char    *name;
  89         pthread_mutex_t positive_cache_lock;
  90         pthread_mutex_t negative_cache_lock;
  91         pthread_mutex_t mp_cache_lock;
  92
  93         int     perform_actual_lookups;
  94         int     enabled;
  95 };
  96
  97 /*
  98  * Contains global configuration options and array of all configuration entries
  99  */
 100 struct configuration {
 101         char    *pidfile_path;
 102         char    *socket_path;
 103
 104         struct configuration_entry **entries;
 105         size_t  entries_capacity;
 106         size_t  entries_size;
 107
 108         pthread_rwlock_t rwlock;
 109
 110         mode_t  socket_mode;
 111         int     force_unlink;
 112         int     query_timeout;
 113
 114         int     threads_num;
 115 };
 116
 117 enum config_entry_lock_type {
 118         CELT_POSITIVE,
 119         CELT_NEGATIVE,
 120         CELT_MULTIPART
 121 };
 122
 123 extern struct configuration *init_configuration(void);
 124 extern void destroy_configuration(struct configuration *);
 125 extern void fill_configuration_defaults(struct configuration *);
 126
 127 extern int add_configuration_entry(struct configuration *,
 128         struct configuration_entry *);
 129 extern struct configuration_entry *create_def_configuration_entry(
 130         const char *);
 131 extern void destroy_configuration_entry(struct configuration_entry *);
 132 extern size_t configuration_get_entries_size(struct configuration *);
 133 extern struct configuration_entry *configuration_get_entry(
 134         struct configuration *, size_t);
 135 extern struct configuration_entry *configuration_find_entry(
 136         struct configuration *, const char *);
 137
 138 extern int configuration_entry_add_mp_cache_entry(struct configuration_entry *,
 139         cache_entry);
 140 extern cache_entry configuration_entry_find_mp_cache_entry(
 141         struct configuration_entry *,
 142         const char *);
 143 extern int configuration_entry_find_mp_cache_entries(
 144         struct configuration_entry *, const char *, cache_entry **,
 145         cache_entry **);
 146
 147 extern void configuration_lock_rdlock(struct configuration *config);
 148 extern void configuration_lock_wrlock(struct configuration *config);
 149 extern void configuration_unlock(struct configuration *config);
 150
 151 extern void configuration_lock_entry(struct configuration_entry *,
 152         enum config_entry_lock_type);
 153 extern void configuration_unlock_entry(struct configuration_entry *,
 154         enum config_entry_lock_type);
 155
 156 #endif