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4f04a76b DL |
1 | /* |
2 | * libfrr overall management functions | |
3 | * | |
4 | * Copyright (C) 2016 David Lamparter for NetDEF, Inc. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the Free | |
8 | * Software Foundation; either version 2 of the License, or (at your option) | |
9 | * any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
4f04a76b DL |
19 | */ |
20 | ||
21 | #include <zebra.h> | |
689f5a8c | 22 | #include <sys/un.h> |
4f04a76b | 23 | |
f43fbf83 DL |
24 | #include <sys/types.h> |
25 | #include <sys/wait.h> | |
26 | ||
4f04a76b DL |
27 | #include "libfrr.h" |
28 | #include "getopt.h" | |
beaa5470 | 29 | #include "privs.h" |
4f04a76b DL |
30 | #include "vty.h" |
31 | #include "command.h" | |
32 | #include "version.h" | |
857b5446 | 33 | #include "memory_vty.h" |
eb05883f | 34 | #include "zclient.h" |
cf7466ac | 35 | #include "log_int.h" |
30771d65 | 36 | #include "module.h" |
f43fbf83 | 37 | #include "network.h" |
b66d022e | 38 | #include "lib_errors.h" |
1c2facd1 RW |
39 | #include "db.h" |
40 | #include "northbound_cli.h" | |
eb05883f | 41 | |
d62a17ae | 42 | DEFINE_HOOK(frr_late_init, (struct thread_master * tm), (tm)) |
03951374 DL |
43 | DEFINE_KOOH(frr_early_fini, (), ()) |
44 | DEFINE_KOOH(frr_fini, (), ()) | |
a5b38c5b | 45 | |
eb05883f DL |
46 | const char frr_sysconfdir[] = SYSCONFDIR; |
47 | const char frr_vtydir[] = DAEMON_VTY_DIR; | |
1c2facd1 RW |
48 | #ifdef HAVE_SQLITE3 |
49 | const char frr_dbdir[] = DAEMON_DB_DIR; | |
50 | #endif | |
80b4df3b | 51 | const char frr_moduledir[] = MODULE_PATH; |
eb05883f | 52 | |
4f138a3e DL |
53 | char frr_protoname[256] = "NONE"; |
54 | char frr_protonameinst[256] = "NONE"; | |
b85120bc | 55 | |
ff44f570 | 56 | char config_default[512]; |
689f5a8c | 57 | char frr_zclientpath[256]; |
ff44f570 | 58 | static char pidfile_default[512]; |
1c2facd1 RW |
59 | #ifdef HAVE_SQLITE3 |
60 | static char dbfile_default[512]; | |
61 | #endif | |
eb05883f | 62 | static char vtypath_default[256]; |
4f04a76b | 63 | |
d8729f8c | 64 | bool debug_memstats_at_exit = false; |
0a7c7856 | 65 | static bool nodetach_term, nodetach_daemon; |
9eed278b | 66 | |
4f04a76b DL |
67 | static char comb_optstr[256]; |
68 | static struct option comb_lo[64]; | |
69 | static struct option *comb_next_lo = &comb_lo[0]; | |
70 | static char comb_helpstr[4096]; | |
71 | ||
72 | struct optspec { | |
73 | const char *optstr; | |
74 | const char *helpstr; | |
75 | const struct option *longopts; | |
76 | }; | |
77 | ||
78 | static void opt_extend(const struct optspec *os) | |
79 | { | |
80 | const struct option *lo; | |
81 | ||
82 | strcat(comb_optstr, os->optstr); | |
83 | strcat(comb_helpstr, os->helpstr); | |
84 | for (lo = os->longopts; lo->name; lo++) | |
85 | memcpy(comb_next_lo++, lo, sizeof(*lo)); | |
86 | } | |
87 | ||
88 | ||
80b4df3b MW |
89 | #define OPTION_VTYSOCK 1000 |
90 | #define OPTION_MODULEDIR 1002 | |
e9b4e74a DS |
91 | #define OPTION_LOG 1003 |
92 | #define OPTION_LOGLEVEL 1004 | |
1c2facd1 RW |
93 | #define OPTION_TCLI 1005 |
94 | #define OPTION_DB_FILE 1006 | |
4f04a76b DL |
95 | |
96 | static const struct option lo_always[] = { | |
d62a17ae | 97 | {"help", no_argument, NULL, 'h'}, |
98 | {"version", no_argument, NULL, 'v'}, | |
99 | {"daemon", no_argument, NULL, 'd'}, | |
100 | {"module", no_argument, NULL, 'M'}, | |
101 | {"vty_socket", required_argument, NULL, OPTION_VTYSOCK}, | |
102 | {"moduledir", required_argument, NULL, OPTION_MODULEDIR}, | |
f8507817 | 103 | {"log", required_argument, NULL, OPTION_LOG}, |
e9b4e74a | 104 | {"log-level", required_argument, NULL, OPTION_LOGLEVEL}, |
1c2facd1 | 105 | {"tcli", no_argument, NULL, OPTION_TCLI}, |
d62a17ae | 106 | {NULL}}; |
4f04a76b | 107 | static const struct optspec os_always = { |
30771d65 | 108 | "hvdM:", |
4f04a76b DL |
109 | " -h, --help Display this help and exit\n" |
110 | " -v, --version Print program version\n" | |
eb05883f | 111 | " -d, --daemon Runs in daemon mode\n" |
30771d65 | 112 | " -M, --module Load specified module\n" |
80b4df3b | 113 | " --vty_socket Override vty socket path\n" |
f8507817 | 114 | " --moduledir Override modules directory\n" |
e9b4e74a | 115 | " --log Set Logging to stdout, syslog, or file:<name>\n" |
1c2facd1 RW |
116 | " --log-level Set Logging Level to use, debug, info, warn, etc\n" |
117 | " --tcli Use transaction-based CLI\n", | |
d62a17ae | 118 | lo_always}; |
4f04a76b DL |
119 | |
120 | ||
eb05883f | 121 | static const struct option lo_cfg_pid_dry[] = { |
d62a17ae | 122 | {"pid_file", required_argument, NULL, 'i'}, |
123 | {"config_file", required_argument, NULL, 'f'}, | |
1c2facd1 RW |
124 | #ifdef HAVE_SQLITE3 |
125 | {"db_file", required_argument, NULL, OPTION_DB_FILE}, | |
126 | #endif | |
d1b4fc1f | 127 | {"pathspace", required_argument, NULL, 'N'}, |
d62a17ae | 128 | {"dryrun", no_argument, NULL, 'C'}, |
cff2b211 | 129 | {"terminal", no_argument, NULL, 't'}, |
d62a17ae | 130 | {NULL}}; |
eb05883f | 131 | static const struct optspec os_cfg_pid_dry = { |
d1b4fc1f | 132 | "f:i:CtN:", |
eb05883f DL |
133 | " -f, --config_file Set configuration file name\n" |
134 | " -i, --pid_file Set process identifier file name\n" | |
1c2facd1 RW |
135 | #ifdef HAVE_SQLITE3 |
136 | " --db_file Set database file name\n" | |
137 | #endif | |
d1b4fc1f | 138 | " -N, --pathspace Insert prefix into config & socket paths\n" |
cff2b211 DL |
139 | " -C, --dryrun Check configuration for validity and exit\n" |
140 | " -t, --terminal Open terminal session on stdio\n" | |
141 | " -d -t Daemonize after terminal session ends\n", | |
d62a17ae | 142 | lo_cfg_pid_dry}; |
eb05883f DL |
143 | |
144 | ||
145 | static const struct option lo_zclient[] = { | |
d62a17ae | 146 | {"socket", required_argument, NULL, 'z'}, |
147 | {NULL}}; | |
eb05883f | 148 | static const struct optspec os_zclient = { |
d62a17ae | 149 | "z:", " -z, --socket Set path of zebra socket\n", lo_zclient}; |
eb05883f DL |
150 | |
151 | ||
4f04a76b | 152 | static const struct option lo_vty[] = { |
d62a17ae | 153 | {"vty_addr", required_argument, NULL, 'A'}, |
154 | {"vty_port", required_argument, NULL, 'P'}, | |
155 | {NULL}}; | |
4f04a76b DL |
156 | static const struct optspec os_vty = { |
157 | "A:P:", | |
158 | " -A, --vty_addr Set vty's bind address\n" | |
159 | " -P, --vty_port Set vty's port number\n", | |
d62a17ae | 160 | lo_vty}; |
4f04a76b DL |
161 | |
162 | ||
d62a17ae | 163 | static const struct option lo_user[] = {{"user", required_argument, NULL, 'u'}, |
164 | {"group", required_argument, NULL, 'g'}, | |
165 | {NULL}}; | |
166 | static const struct optspec os_user = {"u:g:", | |
167 | " -u, --user User to run as\n" | |
168 | " -g, --group Group to run as\n", | |
169 | lo_user}; | |
4f04a76b DL |
170 | |
171 | ||
689f5a8c DL |
172 | bool frr_zclient_addr(struct sockaddr_storage *sa, socklen_t *sa_len, |
173 | const char *path) | |
174 | { | |
175 | memset(sa, 0, sizeof(*sa)); | |
176 | ||
177 | if (!path) | |
178 | path = ZEBRA_SERV_PATH; | |
179 | ||
180 | if (!strncmp(path, ZAPI_TCP_PATHNAME, strlen(ZAPI_TCP_PATHNAME))) { | |
5d13cd09 | 181 | /* note: this functionality is disabled at bottom */ |
689f5a8c DL |
182 | int af; |
183 | int port = ZEBRA_PORT; | |
184 | char *err = NULL; | |
185 | struct sockaddr_in *sin = NULL; | |
186 | struct sockaddr_in6 *sin6 = NULL; | |
187 | ||
188 | path += strlen(ZAPI_TCP_PATHNAME); | |
189 | ||
190 | switch (path[0]) { | |
191 | case '4': | |
192 | path++; | |
193 | af = AF_INET; | |
194 | break; | |
195 | case '6': | |
196 | path++; | |
996c9314 | 197 | /* fallthrough */ |
689f5a8c DL |
198 | default: |
199 | af = AF_INET6; | |
200 | break; | |
201 | } | |
202 | ||
203 | switch (path[0]) { | |
204 | case '\0': | |
205 | break; | |
206 | case ':': | |
207 | path++; | |
208 | port = strtoul(path, &err, 10); | |
209 | if (*err || !*path) | |
210 | return false; | |
211 | break; | |
212 | default: | |
213 | return false; | |
214 | } | |
215 | ||
216 | sa->ss_family = af; | |
217 | switch (af) { | |
218 | case AF_INET: | |
219 | sin = (struct sockaddr_in *)sa; | |
220 | sin->sin_port = htons(port); | |
221 | sin->sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
222 | *sa_len = sizeof(struct sockaddr_in); | |
223 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN | |
224 | sin->sin_len = *sa_len; | |
225 | #endif | |
226 | break; | |
227 | case AF_INET6: | |
228 | sin6 = (struct sockaddr_in6 *)sa; | |
229 | sin6->sin6_port = htons(port); | |
230 | inet_pton(AF_INET6, "::1", &sin6->sin6_addr); | |
231 | *sa_len = sizeof(struct sockaddr_in6); | |
232 | #ifdef SIN6_LEN | |
233 | sin6->sin6_len = *sa_len; | |
234 | #endif | |
235 | break; | |
236 | } | |
5d13cd09 DL |
237 | |
238 | #if 1 | |
239 | /* force-disable this path, because tcp-zebra is a | |
240 | * SECURITY ISSUE. there are no checks at all against | |
241 | * untrusted users on the local system connecting on TCP | |
242 | * and injecting bogus routing data into the entire routing | |
243 | * domain. | |
244 | * | |
245 | * The functionality is only left here because it may be | |
246 | * useful during development, in order to be able to get | |
247 | * tcpdump or wireshark watching ZAPI as TCP. If you want | |
248 | * to do that, flip the #if 1 above to #if 0. */ | |
249 | memset(sa, 0, sizeof(*sa)); | |
250 | return false; | |
251 | #endif | |
689f5a8c DL |
252 | } else { |
253 | /* "sun" is a #define on solaris */ | |
254 | struct sockaddr_un *suna = (struct sockaddr_un *)sa; | |
255 | ||
256 | suna->sun_family = AF_UNIX; | |
257 | strlcpy(suna->sun_path, path, sizeof(suna->sun_path)); | |
258 | #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN | |
259 | *sa_len = suna->sun_len = SUN_LEN(suna); | |
260 | #else | |
261 | *sa_len = sizeof(suna->sun_family) + strlen(suna->sun_path); | |
262 | #endif /* HAVE_STRUCT_SOCKADDR_UN_SUN_LEN */ | |
263 | #if 0 | |
264 | /* this is left here for future reference; Linux abstract | |
265 | * socket namespace support can be enabled by replacing | |
266 | * above #if 0 with #ifdef GNU_LINUX. | |
267 | * | |
268 | * THIS IS A SECURITY ISSUE, the abstract socket namespace | |
269 | * does not have user/group permission control on sockets. | |
270 | * we'd need to implement SCM_CREDENTIALS support first to | |
271 | * check that only proper users can connect to abstract | |
272 | * sockets. (same problem as tcp-zebra, except there is a | |
273 | * fix with SCM_CREDENTIALS. tcp-zebra has no such fix.) | |
274 | */ | |
275 | if (suna->sun_path[0] == '@') | |
276 | suna->sun_path[0] = '\0'; | |
277 | #endif | |
278 | } | |
279 | return true; | |
280 | } | |
281 | ||
4f04a76b DL |
282 | static struct frr_daemon_info *di = NULL; |
283 | ||
284 | void frr_preinit(struct frr_daemon_info *daemon, int argc, char **argv) | |
285 | { | |
286 | di = daemon; | |
287 | ||
288 | /* basename(), opencoded. */ | |
289 | char *p = strrchr(argv[0], '/'); | |
290 | di->progname = p ? p + 1 : argv[0]; | |
291 | ||
292 | umask(0027); | |
293 | ||
294 | opt_extend(&os_always); | |
eb05883f DL |
295 | if (!(di->flags & FRR_NO_CFG_PID_DRY)) |
296 | opt_extend(&os_cfg_pid_dry); | |
4f04a76b DL |
297 | if (!(di->flags & FRR_NO_PRIVSEP)) |
298 | opt_extend(&os_user); | |
eb05883f DL |
299 | if (!(di->flags & FRR_NO_ZCLIENT)) |
300 | opt_extend(&os_zclient); | |
4f04a76b DL |
301 | if (!(di->flags & FRR_NO_TCPVTY)) |
302 | opt_extend(&os_vty); | |
0a7c7856 DL |
303 | if (di->flags & FRR_DETACH_LATER) |
304 | nodetach_daemon = true; | |
eb05883f DL |
305 | |
306 | snprintf(config_default, sizeof(config_default), "%s/%s.conf", | |
d62a17ae | 307 | frr_sysconfdir, di->name); |
eb05883f | 308 | snprintf(pidfile_default, sizeof(pidfile_default), "%s/%s.pid", |
d62a17ae | 309 | frr_vtydir, di->name); |
1c2facd1 RW |
310 | #ifdef HAVE_SQLITE3 |
311 | snprintf(dbfile_default, sizeof(dbfile_default), "%s/%s.db", | |
312 | frr_dbdir, di->name); | |
313 | #endif | |
b85120bc DL |
314 | |
315 | strlcpy(frr_protoname, di->logname, sizeof(frr_protoname)); | |
316 | strlcpy(frr_protonameinst, di->logname, sizeof(frr_protonameinst)); | |
689f5a8c DL |
317 | |
318 | strlcpy(frr_zclientpath, ZEBRA_SERV_PATH, sizeof(frr_zclientpath)); | |
1c2facd1 RW |
319 | |
320 | di->cli_mode = FRR_CLI_CLASSIC; | |
4f04a76b DL |
321 | } |
322 | ||
323 | void frr_opt_add(const char *optstr, const struct option *longopts, | |
d62a17ae | 324 | const char *helpstr) |
4f04a76b | 325 | { |
d62a17ae | 326 | const struct optspec main_opts = {optstr, helpstr, longopts}; |
4f04a76b DL |
327 | opt_extend(&main_opts); |
328 | } | |
329 | ||
330 | void frr_help_exit(int status) | |
331 | { | |
332 | FILE *target = status ? stderr : stdout; | |
333 | ||
334 | if (status != 0) | |
335 | fprintf(stderr, "Invalid options.\n\n"); | |
336 | ||
337 | if (di->printhelp) | |
338 | di->printhelp(target); | |
339 | else | |
340 | fprintf(target, "Usage: %s [OPTION...]\n\n%s%s%s\n\n%s", | |
d62a17ae | 341 | di->progname, di->proghelp, di->copyright ? "\n\n" : "", |
342 | di->copyright ? di->copyright : "", comb_helpstr); | |
4f04a76b DL |
343 | fprintf(target, "\nReport bugs to %s\n", FRR_BUG_ADDRESS); |
344 | exit(status); | |
345 | } | |
346 | ||
30771d65 DL |
347 | struct option_chain { |
348 | struct option_chain *next; | |
349 | const char *arg; | |
350 | }; | |
80b4df3b | 351 | |
30771d65 | 352 | static struct option_chain *modules = NULL, **modnext = &modules; |
4f04a76b DL |
353 | static int errors = 0; |
354 | ||
355 | static int frr_opt(int opt) | |
356 | { | |
357 | static int vty_port_set = 0; | |
358 | static int vty_addr_set = 0; | |
30771d65 | 359 | struct option_chain *oc; |
4f04a76b DL |
360 | char *err; |
361 | ||
362 | switch (opt) { | |
363 | case 'h': | |
364 | frr_help_exit(0); | |
365 | break; | |
366 | case 'v': | |
367 | print_version(di->progname); | |
368 | exit(0); | |
369 | break; | |
eb05883f DL |
370 | case 'd': |
371 | di->daemon_mode = 1; | |
372 | break; | |
30771d65 DL |
373 | case 'M': |
374 | oc = XMALLOC(MTYPE_TMP, sizeof(*oc)); | |
375 | oc->arg = optarg; | |
376 | oc->next = NULL; | |
377 | *modnext = oc; | |
378 | modnext = &oc->next; | |
379 | break; | |
eb05883f DL |
380 | case 'i': |
381 | if (di->flags & FRR_NO_CFG_PID_DRY) | |
382 | return 1; | |
383 | di->pid_file = optarg; | |
384 | break; | |
385 | case 'f': | |
386 | if (di->flags & FRR_NO_CFG_PID_DRY) | |
387 | return 1; | |
388 | di->config_file = optarg; | |
389 | break; | |
d1b4fc1f DL |
390 | case 'N': |
391 | if (di->flags & FRR_NO_CFG_PID_DRY) | |
392 | return 1; | |
393 | if (di->pathspace) { | |
394 | fprintf(stderr, | |
395 | "-N/--pathspace option specified more than once!\n"); | |
396 | errors++; | |
397 | break; | |
398 | } | |
399 | if (strchr(optarg, '/') || strchr(optarg, '.')) { | |
400 | fprintf(stderr, | |
401 | "slashes or dots are not permitted in the --pathspace option.\n"); | |
402 | errors++; | |
403 | break; | |
404 | } | |
405 | di->pathspace = optarg; | |
406 | break; | |
1c2facd1 RW |
407 | #ifdef HAVE_SQLITE3 |
408 | case OPTION_DB_FILE: | |
409 | if (di->flags & FRR_NO_CFG_PID_DRY) | |
410 | return 1; | |
411 | di->db_file = optarg; | |
412 | break; | |
413 | #endif | |
eb05883f DL |
414 | case 'C': |
415 | if (di->flags & FRR_NO_CFG_PID_DRY) | |
416 | return 1; | |
417 | di->dryrun = 1; | |
418 | break; | |
cff2b211 DL |
419 | case 't': |
420 | if (di->flags & FRR_NO_CFG_PID_DRY) | |
421 | return 1; | |
422 | di->terminal = 1; | |
423 | break; | |
eb05883f DL |
424 | case 'z': |
425 | if (di->flags & FRR_NO_ZCLIENT) | |
426 | return 1; | |
689f5a8c | 427 | strlcpy(frr_zclientpath, optarg, sizeof(frr_zclientpath)); |
eb05883f | 428 | break; |
4f04a76b DL |
429 | case 'A': |
430 | if (di->flags & FRR_NO_TCPVTY) | |
431 | return 1; | |
432 | if (vty_addr_set) { | |
d62a17ae | 433 | fprintf(stderr, |
434 | "-A option specified more than once!\n"); | |
4f04a76b DL |
435 | errors++; |
436 | break; | |
437 | } | |
438 | vty_addr_set = 1; | |
439 | di->vty_addr = optarg; | |
440 | break; | |
441 | case 'P': | |
442 | if (di->flags & FRR_NO_TCPVTY) | |
443 | return 1; | |
444 | if (vty_port_set) { | |
d62a17ae | 445 | fprintf(stderr, |
446 | "-P option specified more than once!\n"); | |
4f04a76b DL |
447 | errors++; |
448 | break; | |
449 | } | |
450 | vty_port_set = 1; | |
451 | di->vty_port = strtoul(optarg, &err, 0); | |
452 | if (*err || !*optarg) { | |
d62a17ae | 453 | fprintf(stderr, |
454 | "invalid port number \"%s\" for -P option\n", | |
455 | optarg); | |
4f04a76b DL |
456 | errors++; |
457 | break; | |
458 | } | |
459 | break; | |
460 | case OPTION_VTYSOCK: | |
461 | if (di->vty_sock_path) { | |
d62a17ae | 462 | fprintf(stderr, |
463 | "--vty_socket option specified more than once!\n"); | |
4f04a76b DL |
464 | errors++; |
465 | break; | |
466 | } | |
467 | di->vty_sock_path = optarg; | |
468 | break; | |
80b4df3b MW |
469 | case OPTION_MODULEDIR: |
470 | if (di->module_path) { | |
d62a17ae | 471 | fprintf(stderr, |
472 | "----moduledir option specified more than once!\n"); | |
80b4df3b MW |
473 | errors++; |
474 | break; | |
475 | } | |
476 | di->module_path = optarg; | |
477 | break; | |
1c2facd1 RW |
478 | case OPTION_TCLI: |
479 | di->cli_mode = FRR_CLI_TRANSACTIONAL; | |
480 | break; | |
4f04a76b DL |
481 | case 'u': |
482 | if (di->flags & FRR_NO_PRIVSEP) | |
483 | return 1; | |
484 | di->privs->user = optarg; | |
485 | break; | |
486 | case 'g': | |
487 | if (di->flags & FRR_NO_PRIVSEP) | |
488 | return 1; | |
489 | di->privs->group = optarg; | |
490 | break; | |
f8507817 DS |
491 | case OPTION_LOG: |
492 | di->early_logging = optarg; | |
493 | break; | |
e9b4e74a DS |
494 | case OPTION_LOGLEVEL: |
495 | di->early_loglevel = optarg; | |
496 | break; | |
4f04a76b DL |
497 | default: |
498 | return 1; | |
499 | } | |
500 | return 0; | |
501 | } | |
502 | ||
d62a17ae | 503 | int frr_getopt(int argc, char *const argv[], int *longindex) |
4f04a76b DL |
504 | { |
505 | int opt; | |
506 | int lidx; | |
507 | ||
508 | comb_next_lo->name = NULL; | |
509 | ||
510 | do { | |
511 | opt = getopt_long(argc, argv, comb_optstr, comb_lo, &lidx); | |
512 | if (frr_opt(opt)) | |
513 | break; | |
514 | } while (opt != -1); | |
515 | ||
516 | if (opt == -1 && errors) | |
517 | frr_help_exit(1); | |
518 | if (longindex) | |
519 | *longindex = lidx; | |
520 | return opt; | |
521 | } | |
522 | ||
beaa5470 DL |
523 | static void frr_mkdir(const char *path, bool strip) |
524 | { | |
525 | char buf[256]; | |
526 | mode_t prev; | |
527 | int ret; | |
528 | struct zprivs_ids_t ids; | |
529 | ||
530 | if (strip) { | |
531 | char *slash = strrchr(path, '/'); | |
532 | size_t plen; | |
533 | if (!slash) | |
534 | return; | |
535 | plen = slash - path; | |
536 | if (plen > sizeof(buf) - 1) | |
537 | return; | |
538 | memcpy(buf, path, plen); | |
539 | buf[plen] = '\0'; | |
540 | path = buf; | |
541 | } | |
542 | ||
543 | /* o+rx (..5) is needed for the frrvty group to work properly; | |
544 | * without it, users in the frrvty group can't access the vty sockets. | |
545 | */ | |
546 | prev = umask(0022); | |
547 | ret = mkdir(path, 0755); | |
548 | umask(prev); | |
549 | ||
550 | if (ret != 0) { | |
551 | /* if EEXIST, return without touching the permissions, | |
552 | * so user-set custom permissions are left in place | |
553 | */ | |
554 | if (errno == EEXIST) | |
555 | return; | |
556 | ||
1c50c1c0 QY |
557 | flog_err(EC_LIB_SYSTEM_CALL, "failed to mkdir \"%s\": %s", path, |
558 | strerror(errno)); | |
beaa5470 DL |
559 | return; |
560 | } | |
561 | ||
562 | zprivs_get_ids(&ids); | |
563 | if (chown(path, ids.uid_normal, ids.gid_normal)) | |
1c50c1c0 QY |
564 | flog_err(EC_LIB_SYSTEM_CALL, "failed to chown \"%s\": %s", path, |
565 | strerror(errno)); | |
beaa5470 DL |
566 | } |
567 | ||
a5b38c5b | 568 | static struct thread_master *master; |
4f04a76b DL |
569 | struct thread_master *frr_init(void) |
570 | { | |
30771d65 DL |
571 | struct option_chain *oc; |
572 | struct frrmod_runtime *module; | |
573 | char moderr[256]; | |
d1b4fc1f | 574 | char p_instance[16] = "", p_pathspace[256] = ""; |
80b4df3b MW |
575 | const char *dir; |
576 | dir = di->module_path ? di->module_path : frr_moduledir; | |
4f04a76b DL |
577 | |
578 | srandom(time(NULL)); | |
579 | ||
d1b4fc1f | 580 | if (di->instance) { |
d62a17ae | 581 | snprintf(frr_protonameinst, sizeof(frr_protonameinst), "%s[%u]", |
582 | di->logname, di->instance); | |
d1b4fc1f DL |
583 | snprintf(p_instance, sizeof(p_instance), "-%d", di->instance); |
584 | } | |
585 | if (di->pathspace) | |
b39404c1 | 586 | snprintf(p_pathspace, sizeof(p_pathspace), "%s/", |
d1b4fc1f DL |
587 | di->pathspace); |
588 | ||
36077833 | 589 | snprintf(config_default, sizeof(config_default), "%s%s%s%s.conf", |
d1b4fc1f | 590 | frr_sysconfdir, p_pathspace, di->name, p_instance); |
b39404c1 | 591 | snprintf(pidfile_default, sizeof(pidfile_default), "%s/%s%s%s.pid", |
d1b4fc1f | 592 | frr_vtydir, p_pathspace, di->name, p_instance); |
1c2facd1 RW |
593 | #ifdef HAVE_SQLITE3 |
594 | snprintf(dbfile_default, sizeof(dbfile_default), "%s/%s%s%s.db", | |
595 | frr_dbdir, p_pathspace, di->name, p_instance); | |
596 | #endif | |
b85120bc | 597 | |
37a1f2fb DL |
598 | zprivs_preinit(di->privs); |
599 | ||
d62a17ae | 600 | openzlog(di->progname, di->logname, di->instance, |
601 | LOG_CONS | LOG_NDELAY | LOG_PID, LOG_DAEMON); | |
f8507817 | 602 | |
e9b4e74a | 603 | command_setup_early_logging(di->early_logging, di->early_loglevel); |
4f04a76b | 604 | |
689f5a8c DL |
605 | if (!frr_zclient_addr(&zclient_addr, &zclient_addr_len, |
606 | frr_zclientpath)) { | |
607 | fprintf(stderr, "Invalid zserv socket path: %s\n", | |
608 | frr_zclientpath); | |
609 | exit(1); | |
610 | } | |
611 | ||
b8c1fde3 DL |
612 | /* don't mkdir these as root... */ |
613 | if (!(di->flags & FRR_NO_PRIVSEP)) { | |
614 | if (!di->pid_file || !di->vty_path) | |
615 | frr_mkdir(frr_vtydir, false); | |
616 | if (di->pid_file) | |
617 | frr_mkdir(di->pid_file, true); | |
618 | if (di->vty_path) | |
619 | frr_mkdir(di->vty_path, true); | |
620 | } | |
beaa5470 | 621 | |
30771d65 DL |
622 | frrmod_init(di->module); |
623 | while (modules) { | |
624 | modules = (oc = modules)->next; | |
80b4df3b | 625 | module = frrmod_load(oc->arg, dir, moderr, sizeof(moderr)); |
30771d65 DL |
626 | if (!module) { |
627 | fprintf(stderr, "%s\n", moderr); | |
628 | exit(1); | |
629 | } | |
630 | XFREE(MTYPE_TMP, oc); | |
631 | } | |
632 | ||
4f04a76b DL |
633 | zprivs_init(di->privs); |
634 | ||
972a411c | 635 | master = thread_master_create(NULL); |
4f04a76b DL |
636 | signal_init(master, di->n_signals, di->signals); |
637 | ||
1c2facd1 RW |
638 | #ifdef HAVE_SQLITE3 |
639 | if (!di->db_file) | |
640 | di->db_file = dbfile_default; | |
641 | db_init(di->db_file); | |
642 | #endif | |
643 | ||
857b5446 DL |
644 | if (di->flags & FRR_LIMITED_CLI) |
645 | cmd_init(-1); | |
646 | else | |
647 | cmd_init(1); | |
1c2facd1 | 648 | |
857b5446 DL |
649 | vty_init(master); |
650 | memory_init(); | |
651 | ||
85cd2f9f | 652 | log_ref_init(); |
b66d022e DS |
653 | lib_error_init(); |
654 | ||
1c2facd1 | 655 | yang_init(); |
fbdc1c0a | 656 | nb_init(master, di->yang_modules, di->n_yang_modules); |
1c2facd1 | 657 | |
4f04a76b DL |
658 | return master; |
659 | } | |
660 | ||
1c2facd1 RW |
661 | const char *frr_get_progname(void) |
662 | { | |
663 | return di ? di->progname : NULL; | |
664 | } | |
665 | ||
666 | enum frr_cli_mode frr_get_cli_mode(void) | |
667 | { | |
668 | return di ? di->cli_mode : FRR_CLI_CLASSIC; | |
669 | } | |
670 | ||
154b9e8f DL |
671 | static int rcvd_signal = 0; |
672 | ||
673 | static void rcv_signal(int signum) | |
674 | { | |
675 | rcvd_signal = signum; | |
676 | /* poll() is interrupted by the signal; handled below */ | |
677 | } | |
678 | ||
f43fbf83 DL |
679 | static void frr_daemon_wait(int fd) |
680 | { | |
681 | struct pollfd pfd[1]; | |
682 | int ret; | |
683 | pid_t exitpid; | |
684 | int exitstat; | |
154b9e8f DL |
685 | sigset_t sigs, prevsigs; |
686 | ||
687 | sigemptyset(&sigs); | |
688 | sigaddset(&sigs, SIGTSTP); | |
689 | sigaddset(&sigs, SIGQUIT); | |
690 | sigaddset(&sigs, SIGINT); | |
691 | sigprocmask(SIG_BLOCK, &sigs, &prevsigs); | |
692 | ||
693 | struct sigaction sa = { | |
694 | .sa_handler = rcv_signal, .sa_flags = SA_RESETHAND, | |
695 | }; | |
696 | sigemptyset(&sa.sa_mask); | |
697 | sigaction(SIGTSTP, &sa, NULL); | |
698 | sigaction(SIGQUIT, &sa, NULL); | |
699 | sigaction(SIGINT, &sa, NULL); | |
f43fbf83 DL |
700 | |
701 | do { | |
154b9e8f DL |
702 | char buf[1]; |
703 | ssize_t nrecv; | |
704 | ||
f43fbf83 DL |
705 | pfd[0].fd = fd; |
706 | pfd[0].events = POLLIN; | |
707 | ||
154b9e8f DL |
708 | rcvd_signal = 0; |
709 | ||
996c9314 | 710 | #if defined(HAVE_PPOLL) |
154b9e8f DL |
711 | ret = ppoll(pfd, 1, NULL, &prevsigs); |
712 | #elif defined(HAVE_POLLTS) | |
713 | ret = pollts(pfd, 1, NULL, &prevsigs); | |
714 | #else | |
715 | /* racy -- only used on FreeBSD 9 */ | |
716 | sigset_t tmpsigs; | |
717 | sigprocmask(SIG_SETMASK, &prevsigs, &tmpsigs); | |
f43fbf83 | 718 | ret = poll(pfd, 1, -1); |
154b9e8f DL |
719 | sigprocmask(SIG_SETMASK, &tmpsigs, NULL); |
720 | #endif | |
f43fbf83 DL |
721 | if (ret < 0 && errno != EINTR && errno != EAGAIN) { |
722 | perror("poll()"); | |
723 | exit(1); | |
724 | } | |
154b9e8f DL |
725 | switch (rcvd_signal) { |
726 | case SIGTSTP: | |
727 | send(fd, "S", 1, 0); | |
728 | do { | |
729 | nrecv = recv(fd, buf, sizeof(buf), 0); | |
730 | } while (nrecv == -1 | |
731 | && (errno == EINTR || errno == EAGAIN)); | |
732 | ||
733 | raise(SIGTSTP); | |
734 | sigaction(SIGTSTP, &sa, NULL); | |
735 | send(fd, "R", 1, 0); | |
736 | break; | |
737 | case SIGINT: | |
738 | send(fd, "I", 1, 0); | |
739 | break; | |
740 | case SIGQUIT: | |
741 | send(fd, "Q", 1, 0); | |
742 | break; | |
743 | } | |
f43fbf83 DL |
744 | } while (ret <= 0); |
745 | ||
746 | exitpid = waitpid(-1, &exitstat, WNOHANG); | |
747 | if (exitpid == 0) | |
748 | /* child successfully went to main loop & closed socket */ | |
749 | exit(0); | |
750 | ||
751 | /* child failed one way or another ... */ | |
6bd2b360 DL |
752 | if (WIFEXITED(exitstat) && WEXITSTATUS(exitstat) == 0) |
753 | /* can happen in --terminal case if exit is fast enough */ | |
754 | (void)0; | |
755 | else if (WIFEXITED(exitstat)) | |
f43fbf83 DL |
756 | fprintf(stderr, "%s failed to start, exited %d\n", di->name, |
757 | WEXITSTATUS(exitstat)); | |
758 | else if (WIFSIGNALED(exitstat)) | |
759 | fprintf(stderr, "%s crashed in startup, signal %d\n", di->name, | |
760 | WTERMSIG(exitstat)); | |
761 | else | |
762 | fprintf(stderr, "%s failed to start, unknown problem\n", | |
763 | di->name); | |
764 | exit(1); | |
765 | } | |
766 | ||
767 | static int daemon_ctl_sock = -1; | |
768 | ||
769 | static void frr_daemonize(void) | |
770 | { | |
771 | int fds[2]; | |
772 | pid_t pid; | |
773 | ||
774 | if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds)) { | |
775 | perror("socketpair() for daemon control"); | |
776 | exit(1); | |
777 | } | |
778 | set_cloexec(fds[0]); | |
779 | set_cloexec(fds[1]); | |
780 | ||
781 | pid = fork(); | |
782 | if (pid < 0) { | |
783 | perror("fork()"); | |
784 | exit(1); | |
785 | } | |
786 | if (pid == 0) { | |
787 | /* child */ | |
788 | close(fds[0]); | |
789 | if (setsid() < 0) { | |
790 | perror("setsid()"); | |
791 | exit(1); | |
792 | } | |
793 | ||
794 | daemon_ctl_sock = fds[1]; | |
795 | return; | |
796 | } | |
797 | ||
798 | close(fds[1]); | |
799 | frr_daemon_wait(fds[0]); | |
800 | } | |
801 | ||
9e224e60 DS |
802 | /* |
803 | * Why is this a thread? | |
804 | * | |
805 | * The read in of config for integrated config happens *after* | |
806 | * thread execution starts( because it is passed in via a vtysh -b -n ) | |
807 | * While if you are not using integrated config we want the ability | |
808 | * to read the config in after thread execution starts, so that | |
809 | * we can match this behavior. | |
810 | */ | |
811 | static int frr_config_read_in(struct thread *t) | |
4f04a76b | 812 | { |
1c2facd1 | 813 | if (!vty_read_config(NULL, di->config_file, config_default) && |
573de11f | 814 | di->backup_config_file) { |
fe64533a DS |
815 | char *orig = XSTRDUP(MTYPE_TMP, host_config_get()); |
816 | ||
573de11f DS |
817 | zlog_info("Attempting to read backup config file: %s specified", |
818 | di->backup_config_file); | |
1c2facd1 | 819 | vty_read_config(NULL, di->backup_config_file, config_default); |
fe64533a DS |
820 | |
821 | host_config_set(orig); | |
822 | XFREE(MTYPE_TMP, orig); | |
573de11f | 823 | } |
1c2facd1 RW |
824 | |
825 | /* | |
826 | * Update the shared candidate after reading the startup configuration. | |
827 | */ | |
828 | nb_config_replace(vty_shared_candidate_config, running_config, true); | |
829 | ||
9e224e60 DS |
830 | return 0; |
831 | } | |
832 | ||
833 | void frr_config_fork(void) | |
834 | { | |
835 | hook_call(frr_late_init, master); | |
eb05883f | 836 | |
0a7c7856 DL |
837 | if (!(di->flags & FRR_NO_CFG_PID_DRY)) { |
838 | /* Don't start execution if we are in dry-run mode */ | |
839 | if (di->dryrun) { | |
840 | frr_config_read_in(NULL); | |
841 | exit(0); | |
842 | } | |
9e224e60 | 843 | |
0a7c7856 DL |
844 | thread_add_event(master, frr_config_read_in, NULL, 0, |
845 | &di->read_in); | |
846 | } | |
eb05883f | 847 | |
154b9e8f | 848 | if (di->daemon_mode || di->terminal) |
f43fbf83 | 849 | frr_daemonize(); |
eb05883f DL |
850 | |
851 | if (!di->pid_file) | |
852 | di->pid_file = pidfile_default; | |
d62a17ae | 853 | pid_output(di->pid_file); |
eb05883f DL |
854 | } |
855 | ||
0a7c7856 | 856 | static void frr_vty_serv(void) |
eb05883f | 857 | { |
d62a17ae | 858 | /* allow explicit override of vty_path in the future |
eb05883f DL |
859 | * (not currently set anywhere) */ |
860 | if (!di->vty_path) { | |
861 | const char *dir; | |
d1b4fc1f DL |
862 | char defvtydir[256]; |
863 | ||
864 | snprintf(defvtydir, sizeof(defvtydir), "%s%s%s", frr_vtydir, | |
865 | di->pathspace ? "/" : "", | |
866 | di->pathspace ? di->pathspace : ""); | |
867 | ||
868 | dir = di->vty_sock_path ? di->vty_sock_path : defvtydir; | |
eb05883f DL |
869 | |
870 | if (di->instance) | |
871 | snprintf(vtypath_default, sizeof(vtypath_default), | |
d62a17ae | 872 | "%s/%s-%d.vty", dir, di->name, di->instance); |
eb05883f DL |
873 | else |
874 | snprintf(vtypath_default, sizeof(vtypath_default), | |
d62a17ae | 875 | "%s/%s.vty", dir, di->name); |
eb05883f DL |
876 | |
877 | di->vty_path = vtypath_default; | |
878 | } | |
879 | ||
880 | vty_serv_sock(di->vty_addr, di->vty_port, di->vty_path); | |
4f04a76b DL |
881 | } |
882 | ||
0a7c7856 DL |
883 | static void frr_check_detach(void) |
884 | { | |
885 | if (nodetach_term || nodetach_daemon) | |
886 | return; | |
887 | ||
888 | if (daemon_ctl_sock != -1) | |
889 | close(daemon_ctl_sock); | |
890 | daemon_ctl_sock = -1; | |
891 | } | |
892 | ||
154b9e8f | 893 | static void frr_terminal_close(int isexit) |
cff2b211 | 894 | { |
993bab89 RW |
895 | int nullfd; |
896 | ||
0a7c7856 DL |
897 | nodetach_term = false; |
898 | frr_check_detach(); | |
154b9e8f DL |
899 | |
900 | if (!di->daemon_mode || isexit) { | |
cff2b211 | 901 | printf("\n%s exiting\n", di->name); |
154b9e8f DL |
902 | if (!isexit) |
903 | raise(SIGINT); | |
904 | return; | |
cff2b211 DL |
905 | } else { |
906 | printf("\n%s daemonizing\n", di->name); | |
907 | fflush(stdout); | |
908 | } | |
909 | ||
993bab89 RW |
910 | nullfd = open("/dev/null", O_RDONLY | O_NOCTTY); |
911 | if (nullfd == -1) { | |
450971aa | 912 | flog_err_sys(EC_LIB_SYSTEM_CALL, |
09c866e3 QY |
913 | "%s: failed to open /dev/null: %s", __func__, |
914 | safe_strerror(errno)); | |
993bab89 RW |
915 | } else { |
916 | dup2(nullfd, 0); | |
917 | dup2(nullfd, 1); | |
918 | dup2(nullfd, 2); | |
919 | close(nullfd); | |
920 | } | |
154b9e8f | 921 | } |
cff2b211 | 922 | |
154b9e8f DL |
923 | static struct thread *daemon_ctl_thread = NULL; |
924 | ||
925 | static int frr_daemon_ctl(struct thread *t) | |
926 | { | |
927 | char buf[1]; | |
928 | ssize_t nr; | |
929 | ||
930 | nr = recv(daemon_ctl_sock, buf, sizeof(buf), 0); | |
931 | if (nr < 0 && (errno == EINTR || errno == EAGAIN)) | |
932 | goto out; | |
933 | if (nr <= 0) | |
934 | return 0; | |
935 | ||
936 | switch (buf[0]) { | |
996c9314 | 937 | case 'S': /* SIGTSTP */ |
154b9e8f | 938 | vty_stdio_suspend(); |
e339d7c0 | 939 | if (send(daemon_ctl_sock, "s", 1, 0) < 0) |
940 | zlog_err("%s send(\"s\") error (SIGTSTP propagation)", | |
941 | (di && di->name ? di->name : "")); | |
154b9e8f | 942 | break; |
996c9314 | 943 | case 'R': /* SIGTCNT [implicit] */ |
154b9e8f DL |
944 | vty_stdio_resume(); |
945 | break; | |
996c9314 | 946 | case 'I': /* SIGINT */ |
154b9e8f DL |
947 | di->daemon_mode = false; |
948 | raise(SIGINT); | |
949 | break; | |
996c9314 | 950 | case 'Q': /* SIGQUIT */ |
154b9e8f DL |
951 | di->daemon_mode = true; |
952 | vty_stdio_close(); | |
953 | break; | |
cff2b211 | 954 | } |
154b9e8f DL |
955 | |
956 | out: | |
957 | thread_add_read(master, frr_daemon_ctl, NULL, daemon_ctl_sock, | |
958 | &daemon_ctl_thread); | |
959 | return 0; | |
cff2b211 DL |
960 | } |
961 | ||
0a7c7856 DL |
962 | void frr_detach(void) |
963 | { | |
964 | nodetach_daemon = false; | |
965 | frr_check_detach(); | |
966 | } | |
967 | ||
16077f2f DL |
968 | void frr_run(struct thread_master *master) |
969 | { | |
970 | char instanceinfo[64] = ""; | |
971 | ||
972 | frr_vty_serv(); | |
973 | ||
974 | if (di->instance) | |
975 | snprintf(instanceinfo, sizeof(instanceinfo), "instance %u ", | |
d62a17ae | 976 | di->instance); |
977 | ||
978 | zlog_notice("%s %s starting: %svty@%d%s", di->name, FRR_VERSION, | |
979 | instanceinfo, di->vty_port, di->startinfo); | |
16077f2f | 980 | |
cff2b211 | 981 | if (di->terminal) { |
0a7c7856 DL |
982 | nodetach_term = true; |
983 | ||
cff2b211 | 984 | vty_stdio(frr_terminal_close); |
154b9e8f DL |
985 | if (daemon_ctl_sock != -1) { |
986 | set_nonblocking(daemon_ctl_sock); | |
987 | thread_add_read(master, frr_daemon_ctl, NULL, | |
988 | daemon_ctl_sock, &daemon_ctl_thread); | |
989 | } | |
eef3d030 | 990 | } else if (di->daemon_mode) { |
c9c8d0d1 | 991 | int nullfd = open("/dev/null", O_RDONLY | O_NOCTTY); |
993bab89 | 992 | if (nullfd == -1) { |
450971aa | 993 | flog_err_sys(EC_LIB_SYSTEM_CALL, |
09c866e3 QY |
994 | "%s: failed to open /dev/null: %s", |
995 | __func__, safe_strerror(errno)); | |
993bab89 RW |
996 | } else { |
997 | dup2(nullfd, 0); | |
998 | dup2(nullfd, 1); | |
999 | dup2(nullfd, 2); | |
1000 | close(nullfd); | |
1001 | } | |
c9c8d0d1 | 1002 | |
0a7c7856 | 1003 | frr_check_detach(); |
f43fbf83 DL |
1004 | } |
1005 | ||
d34cb7f0 DL |
1006 | /* end fixed stderr startup logging */ |
1007 | zlog_startup_stderr = false; | |
1008 | ||
16077f2f DL |
1009 | struct thread thread; |
1010 | while (thread_fetch(master, &thread)) | |
1011 | thread_call(&thread); | |
1012 | } | |
03951374 DL |
1013 | |
1014 | void frr_early_fini(void) | |
1015 | { | |
1016 | hook_call(frr_early_fini); | |
1017 | } | |
1018 | ||
1019 | void frr_fini(void) | |
1020 | { | |
9eed278b DL |
1021 | FILE *fp; |
1022 | char filename[128]; | |
1023 | int have_leftovers; | |
1024 | ||
03951374 DL |
1025 | hook_call(frr_fini); |
1026 | ||
1027 | /* memory_init -> nothing needed */ | |
1028 | vty_terminate(); | |
1029 | cmd_terminate(); | |
1c2facd1 RW |
1030 | nb_terminate(); |
1031 | yang_terminate(); | |
1032 | #ifdef HAVE_SQLITE3 | |
1033 | db_close(); | |
1034 | #endif | |
85cd2f9f | 1035 | log_ref_fini(); |
03951374 DL |
1036 | zprivs_terminate(di->privs); |
1037 | /* signal_init -> nothing needed */ | |
1038 | thread_master_free(master); | |
e5716b16 | 1039 | master = NULL; |
03951374 DL |
1040 | closezlog(); |
1041 | /* frrmod_init -> nothing needed / hooks */ | |
9eed278b DL |
1042 | |
1043 | if (!debug_memstats_at_exit) | |
1044 | return; | |
1045 | ||
1046 | have_leftovers = log_memstats(stderr, di->name); | |
1047 | ||
1048 | /* in case we decide at runtime that we want exit-memstats for | |
1049 | * a daemon, but it has no stderr because it's daemonized | |
1050 | * (only do this if we actually have something to print though) | |
1051 | */ | |
1052 | if (!have_leftovers) | |
1053 | return; | |
1054 | ||
996c9314 LB |
1055 | snprintf(filename, sizeof(filename), "/tmp/frr-memstats-%s-%llu-%llu", |
1056 | di->name, (unsigned long long)getpid(), | |
9eed278b DL |
1057 | (unsigned long long)time(NULL)); |
1058 | ||
1059 | fp = fopen(filename, "w"); | |
1060 | if (fp) { | |
1061 | log_memstats(fp, di->name); | |
1062 | fclose(fp); | |
1063 | } | |
03951374 | 1064 | } |
42efb0d4 DL |
1065 | |
1066 | #ifdef INTERP | |
1067 | static const char interp[] | |
1068 | __attribute__((section(".interp"), used)) = INTERP; | |
1069 | #endif | |
1070 | /* | |
1071 | * executable entry point for libfrr.so | |
1072 | * | |
1073 | * note that libc initialization is skipped for this so the set of functions | |
1074 | * that can be called is rather limited | |
1075 | */ | |
1076 | extern void _libfrr_version(void) | |
1077 | __attribute__((visibility("hidden"), noreturn)); | |
1078 | void _libfrr_version(void) | |
1079 | { | |
1080 | const char banner[] = | |
1081 | FRR_FULL_NAME " " FRR_VERSION ".\n" | |
1082 | FRR_COPYRIGHT GIT_INFO "\n" | |
1083 | "configured with:\n " FRR_CONFIG_ARGS "\n"; | |
1084 | write(1, banner, sizeof(banner) - 1); | |
1085 | _exit(0); | |
1086 | } |