1 /* vi: set sw=4 ts=4: */
3 * rt_names.c rtnetlink names DB.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
10 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
15 typedef struct rtnl_tab_t {
16 const char *cached_str;
17 unsigned cached_result;
21 static void rtnl_tab_initialize(const char *file, const char **tab)
24 parser_t *parser = config_open2(file, fopen_for_read);
26 while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL)) {
27 unsigned id = bb_strtou(token[0], NULL, 0);
29 bb_error_msg("database %s is corrupted at line %d",
30 file, parser->lineno);
33 tab[id] = xstrdup(token[1]);
38 static int rtnl_a2n(rtnl_tab_t *tab, uint32_t *id, const char *arg, int base)
42 if (tab->cached_str && strcmp(tab->cached_str, arg) == 0) {
43 *id = tab->cached_result;
47 for (i = 0; i < 256; i++) {
49 && strcmp(tab->tab[i], arg) == 0
51 tab->cached_str = tab->tab[i];
52 tab->cached_result = i;
58 i = bb_strtou(arg, NULL, base);
66 static rtnl_tab_t *rtnl_rtprot_tab;
68 static void rtnl_rtprot_initialize(void)
70 static const char *const init_tab[] = {
88 rtnl_rtprot_tab = xzalloc(sizeof(*rtnl_rtprot_tab));
89 memcpy(rtnl_rtprot_tab->tab, init_tab, sizeof(init_tab));
90 rtnl_tab_initialize("/etc/iproute2/rt_protos", rtnl_rtprot_tab->tab);
93 const char* FAST_FUNC rtnl_rtprot_n2a(int id, char *buf)
95 if (id < 0 || id >= 256) {
96 sprintf(buf, "%d", id);
100 rtnl_rtprot_initialize();
102 if (rtnl_rtprot_tab->tab[id])
103 return rtnl_rtprot_tab->tab[id];
104 /* buf is SPRINT_BSIZE big */
105 sprintf(buf, "%d", id);
109 int FAST_FUNC rtnl_rtprot_a2n(uint32_t *id, char *arg)
111 rtnl_rtprot_initialize();
112 return rtnl_a2n(rtnl_rtprot_tab, id, arg, 0);
116 static rtnl_tab_t *rtnl_rtscope_tab;
118 static void rtnl_rtscope_initialize(void)
120 if (rtnl_rtscope_tab)
122 rtnl_rtscope_tab = xzalloc(sizeof(*rtnl_rtscope_tab));
123 rtnl_rtscope_tab->tab[0] = "global";
124 rtnl_rtscope_tab->tab[255] = "nowhere";
125 rtnl_rtscope_tab->tab[254] = "host";
126 rtnl_rtscope_tab->tab[253] = "link";
127 rtnl_rtscope_tab->tab[200] = "site";
128 rtnl_tab_initialize("/etc/iproute2/rt_scopes", rtnl_rtscope_tab->tab);
131 const char* FAST_FUNC rtnl_rtscope_n2a(int id, char *buf)
133 if (id < 0 || id >= 256) {
134 sprintf(buf, "%d", id);
138 rtnl_rtscope_initialize();
140 if (rtnl_rtscope_tab->tab[id])
141 return rtnl_rtscope_tab->tab[id];
142 /* buf is SPRINT_BSIZE big */
143 sprintf(buf, "%d", id);
147 int FAST_FUNC rtnl_rtscope_a2n(uint32_t *id, char *arg)
149 rtnl_rtscope_initialize();
150 return rtnl_a2n(rtnl_rtscope_tab, id, arg, 0);
154 static rtnl_tab_t *rtnl_rtrealm_tab;
156 static void rtnl_rtrealm_initialize(void)
158 if (rtnl_rtrealm_tab) return;
159 rtnl_rtrealm_tab = xzalloc(sizeof(*rtnl_rtrealm_tab));
160 rtnl_rtrealm_tab->tab[0] = "unknown";
161 rtnl_tab_initialize("/etc/iproute2/rt_realms", rtnl_rtrealm_tab->tab);
164 int FAST_FUNC rtnl_rtrealm_a2n(uint32_t *id, char *arg)
166 rtnl_rtrealm_initialize();
167 return rtnl_a2n(rtnl_rtrealm_tab, id, arg, 0);
170 #if ENABLE_FEATURE_IP_RULE
171 const char* FAST_FUNC rtnl_rtrealm_n2a(int id, char *buf)
173 if (id < 0 || id >= 256) {
174 sprintf(buf, "%d", id);
178 rtnl_rtrealm_initialize();
180 if (rtnl_rtrealm_tab->tab[id])
181 return rtnl_rtrealm_tab->tab[id];
182 /* buf is SPRINT_BSIZE big */
183 sprintf(buf, "%d", id);
189 static rtnl_tab_t *rtnl_rtdsfield_tab;
191 static void rtnl_rtdsfield_initialize(void)
193 if (rtnl_rtdsfield_tab) return;
194 rtnl_rtdsfield_tab = xzalloc(sizeof(*rtnl_rtdsfield_tab));
195 rtnl_rtdsfield_tab->tab[0] = "0";
196 rtnl_tab_initialize("/etc/iproute2/rt_dsfield", rtnl_rtdsfield_tab->tab);
199 const char* FAST_FUNC rtnl_dsfield_n2a(int id, char *buf)
201 if (id < 0 || id >= 256) {
202 sprintf(buf, "%d", id);
206 rtnl_rtdsfield_initialize();
208 if (rtnl_rtdsfield_tab->tab[id])
209 return rtnl_rtdsfield_tab->tab[id];
210 /* buf is SPRINT_BSIZE big */
211 sprintf(buf, "0x%02x", id);
215 int FAST_FUNC rtnl_dsfield_a2n(uint32_t *id, char *arg)
217 rtnl_rtdsfield_initialize();
218 return rtnl_a2n(rtnl_rtdsfield_tab, id, arg, 16);
222 #if ENABLE_FEATURE_IP_RULE
223 static rtnl_tab_t *rtnl_rttable_tab;
225 static void rtnl_rttable_initialize(void)
227 if (rtnl_rtdsfield_tab) return;
228 rtnl_rttable_tab = xzalloc(sizeof(*rtnl_rttable_tab));
229 rtnl_rttable_tab->tab[0] = "unspec";
230 rtnl_rttable_tab->tab[255] = "local";
231 rtnl_rttable_tab->tab[254] = "main";
232 rtnl_rttable_tab->tab[253] = "default";
233 rtnl_tab_initialize("/etc/iproute2/rt_tables", rtnl_rttable_tab->tab);
236 const char* FAST_FUNC rtnl_rttable_n2a(int id, char *buf)
238 if (id < 0 || id >= 256) {
239 sprintf(buf, "%d", id);
243 rtnl_rttable_initialize();
245 if (rtnl_rttable_tab->tab[id])
246 return rtnl_rttable_tab->tab[id];
247 /* buf is SPRINT_BSIZE big */
248 sprintf(buf, "%d", id);
252 int FAST_FUNC rtnl_rttable_a2n(uint32_t *id, char *arg)
254 rtnl_rttable_initialize();
255 return rtnl_a2n(rtnl_rttable_tab, id, arg, 0);