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