/* * netlink/object.c Generic Cacheable Object * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation version 2.1 * of the License. * * Copyright (c) 2003-2008 Thomas Graf */ #ifndef NETLINK_OBJECT_H_ #define NETLINK_OBJECT_H_ #include #include #include #ifdef __cplusplus extern "C" { #endif #define NL_OBJ_MARK 1 struct nl_cache; struct nl_object; struct nl_object_ops; struct nl_object { NLHDR_COMMON }; #define OBJ_CAST(ptr) ((struct nl_object *) (ptr)) /* General */ extern struct nl_object * nl_object_alloc(struct nl_object_ops *); extern void nl_object_free(struct nl_object *); extern struct nl_object * nl_object_clone(struct nl_object *obj); #ifdef disabled extern int nl_object_alloc_name(const char *, struct nl_object **); extern void nl_object_dump(struct nl_object *, struct nl_dump_params *); extern uint32_t nl_object_diff(struct nl_object *, struct nl_object *); extern int nl_object_match_filter(struct nl_object *, struct nl_object *); extern int nl_object_identical(struct nl_object *, struct nl_object *); extern char * nl_object_attrs2str(struct nl_object *, uint32_t attrs, char *buf, size_t); #endif /** * Check whether this object is used by multiple users * @arg obj object to check * @return true or false */ static inline int nl_object_shared(struct nl_object *obj) { return obj->ce_refcnt > 1; } static inline void nl_object_get(struct nl_object *obj) { obj->ce_refcnt++; } static inline void nl_object_put(struct nl_object *obj) { if (!obj) return; obj->ce_refcnt--; if (obj->ce_refcnt <= 0) nl_object_free(obj); } /** * @name Marks * @{ */ /** * Add mark to object * @arg obj Object to mark */ static inline void nl_object_mark(struct nl_object *obj) { obj->ce_flags |= NL_OBJ_MARK; } /** * Remove mark from object * @arg obj Object to unmark */ static inline void nl_object_unmark(struct nl_object *obj) { obj->ce_flags &= ~NL_OBJ_MARK; } /** * Return true if object is marked * @arg obj Object to check * @return true if object is marked, otherwise false */ static inline int nl_object_is_marked(struct nl_object *obj) { return (obj->ce_flags & NL_OBJ_MARK); } /** @} */ #ifdef disabled /** * Return list of attributes present in an object * @arg obj an object * @arg buf destination buffer * @arg len length of destination buffer * * @return destination buffer. */ static inline char *nl_object_attr_list(struct nl_object *obj, char *buf, size_t len) { return nl_object_attrs2str(obj, obj->ce_mask, buf, len); } #endif /** * @name Attributes * @{ */ static inline int nl_object_get_refcnt(struct nl_object *obj) { return obj->ce_refcnt; } static inline struct nl_cache *nl_object_get_cache(struct nl_object *obj) { return obj->ce_cache; } static inline void * nl_object_priv(struct nl_object *obj) { return obj; } /** @} */ #ifdef __cplusplus } #endif #endif 0'>10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273