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 * $FreeBSD$ 27 */ 28 29 #ifndef __NSCD_CONFIG_H__ 30 #define __NSCD_CONFIG_H__ 31 32 #include "cachelib.h" 33 34 #define DEFAULT_QUERY_TIMEOUT 8 35 #define DEFAULT_THREADS_NUM 8 36 37 #define DEFAULT_COMMON_ENTRY_TIMEOUT 10 38 #define DEFAULT_MP_ENTRY_TIMEOUT 60 39 #define DEFAULT_CACHE_HT_SIZE 257 40 41 #define INITIAL_ENTRIES_CAPACITY 8 42 #define DEFAULT_SOCKET_PATH "/var/run/nscd" 43 #define DEFAULT_PIDFILE_PATH "/var/run/nscd.pid" 44 45 #define DEFAULT_POSITIVE_ELEMENTS_SIZE (2048) 46 #define DEFAULT_POSITIVE_LIFETIME (3600) 47 #define DEFAULT_POSITIVE_CONF_THRESH (1) 48 49 #define DEFAULT_NEGATIVE_ELEMENTS_SIZE (2048) 50 #define DEFAULT_NEGATIVE_LIFETIME (60) 51 #define DEFAULT_NEGATIVE_CONF_THRESH (1) /* (2) ??? */ 52 53 #define DEFAULT_MULTIPART_ELEMENTS_SIZE (1024 * 8) 54 #define DEFAULT_MULITPART_SESSIONS_SIZE (1024) 55 #define DEFAULT_MULITPART_LIFETIME (3600) 56 57 extern const char *c_default_entries[6]; 58 59 /* 60 * Configuration entry represents the details of each cache entry in the 61 * config file (i.e. passwd or group). Its purpose also is to acquire locks 62 * of three different types (for usual read/write caching, for multipart 63 * caching and for caching of the negative results) for that cache entry. 64 */ 65 struct configuration_entry { 66 struct common_cache_entry_params positive_cache_params; 67 struct common_cache_entry_params negative_cache_params; 68 struct mp_cache_entry_params mp_cache_params; 69 70 /* 71 * configuration_entry holds pointers for all actual cache_entries, 72 * which are used for it. There is one for positive caching, one for 73 * for negative caching, and several (one per each euid/egid) for 74 * multipart caching. 75 */ 76 cache_entry positive_cache_entry; 77 cache_entry negative_cache_entry; 78 79 cache_entry *mp_cache_entries; 80 size_t mp_cache_entries_size; 81 82 struct timeval common_query_timeout; 83 struct timeval mp_query_timeout; 84 85 char *name; 86 pthread_mutex_t positive_cache_lock; 87 pthread_mutex_t negative_cache_lock; 88 pthread_mutex_t mp_cache_lock; 89 90 int perform_actual_lookups; 91 int enabled; 92 }; 93 94 /* 95 * Contains global configuration options and array of all configuration entries 96 */ 97 struct configuration { 98 char *pidfile_path; 99 char *socket_path; 100 101 struct configuration_entry **entries; 102 size_t entries_capacity; 103 size_t entries_size; 104 105 pthread_rwlock_t rwlock; 106 107 mode_t socket_mode; 108 int force_unlink; 109 int query_timeout; 110 111 int threads_num; 112 }; 113 114 enum config_entry_lock_type { 115 CELT_POSITIVE, 116 CELT_NEGATIVE, 117 CELT_MULTIPART 118 }; 119 120 struct configuration *init_configuration(void); 121 void destroy_configuration(struct configuration *); 122 void fill_configuration_defaults(struct configuration *); 123 124 int add_configuration_entry(struct configuration *, 125 struct configuration_entry *); 126 struct configuration_entry *create_def_configuration_entry(const char *); 127 void destroy_configuration_entry(struct configuration_entry *); 128 size_t configuration_get_entries_size(struct configuration *); 129 struct configuration_entry *configuration_get_entry(struct configuration *, 130 size_t); 131 struct configuration_entry *configuration_find_entry(struct configuration *, 132 const char *); 133 134 int configuration_entry_add_mp_cache_entry(struct configuration_entry *, 135 cache_entry); 136 cache_entry configuration_entry_find_mp_cache_entry( 137 struct configuration_entry *, const char *); 138 int configuration_entry_find_mp_cache_entries(struct configuration_entry *, 139 const char *, cache_entry **, cache_entry **); 140 141 void configuration_lock_rdlock(struct configuration *config); 142 void configuration_lock_wrlock(struct configuration *config); 143 void configuration_unlock(struct configuration *config); 144 145 void configuration_lock_entry(struct configuration_entry *, 146 enum config_entry_lock_type); 147 void configuration_unlock_entry(struct configuration_entry *, 148 enum config_entry_lock_type); 149 150 #endif 151