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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" | |
1c0d8808 | 33 | #include "lib_vty.h" |
f73126c3 | 34 | #include "log_vty.h" |
eb05883f | 35 | #include "zclient.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" | |
1ae9686c | 41 | #include "northbound_db.h" |
ae0994f6 | 42 | #include "debug.h" |
3e41733f | 43 | #include "frrcu.h" |
b9b4c061 | 44 | #include "frr_pthread.h" |
ac4adef4 | 45 | #include "defaults.h" |
e613a6f7 | 46 | #include "frrscript.h" |
eb05883f | 47 | |
d62a17ae | 48 | DEFINE_HOOK(frr_late_init, (struct thread_master * tm), (tm)) |
88e635ee | 49 | DEFINE_HOOK(frr_very_late_init, (struct thread_master * tm), (tm)) |
03951374 DL |
50 | DEFINE_KOOH(frr_early_fini, (), ()) |
51 | DEFINE_KOOH(frr_fini, (), ()) | |
a5b38c5b | 52 | |
eb05883f | 53 | const char frr_sysconfdir[] = SYSCONFDIR; |
43e587c1 | 54 | char frr_vtydir[256]; |
1c2facd1 RW |
55 | #ifdef HAVE_SQLITE3 |
56 | const char frr_dbdir[] = DAEMON_DB_DIR; | |
57 | #endif | |
80b4df3b | 58 | const char frr_moduledir[] = MODULE_PATH; |
e4e0229a | 59 | const char frr_scriptdir[] = SCRIPT_PATH; |
eb05883f | 60 | |
4f138a3e DL |
61 | char frr_protoname[256] = "NONE"; |
62 | char frr_protonameinst[256] = "NONE"; | |
b85120bc | 63 | |
ff44f570 | 64 | char config_default[512]; |
689f5a8c | 65 | char frr_zclientpath[256]; |
43e587c1 | 66 | static char pidfile_default[1024]; |
1c2facd1 RW |
67 | #ifdef HAVE_SQLITE3 |
68 | static char dbfile_default[512]; | |
69 | #endif | |
918537e2 | 70 | static char vtypath_default[512]; |
4f04a76b | 71 | |
d8729f8c | 72 | bool debug_memstats_at_exit = false; |
0a7c7856 | 73 | static bool nodetach_term, nodetach_daemon; |
9eed278b | 74 | |
4f04a76b DL |
75 | static char comb_optstr[256]; |
76 | static struct option comb_lo[64]; | |
77 | static struct option *comb_next_lo = &comb_lo[0]; | |
78 | static char comb_helpstr[4096]; | |
79 | ||
80 | struct optspec { | |
81 | const char *optstr; | |
82 | const char *helpstr; | |
83 | const struct option *longopts; | |
84 | }; | |
85 | ||
86 | static void opt_extend(const struct optspec *os) | |
87 | { | |
88 | const struct option *lo; | |
89 | ||
9f73d2c9 | 90 | strlcat(comb_optstr, os->optstr, sizeof(comb_optstr)); |
67c726a1 | 91 | strlcat(comb_helpstr, os->helpstr, sizeof(comb_helpstr)); |
4f04a76b DL |
92 | for (lo = os->longopts; lo->name; lo++) |
93 | memcpy(comb_next_lo++, lo, sizeof(*lo)); | |
94 | } | |
95 | ||
96 | ||
80b4df3b MW |
97 | #define OPTION_VTYSOCK 1000 |
98 | #define OPTION_MODULEDIR 1002 | |
e9b4e74a DS |
99 | #define OPTION_LOG 1003 |
100 | #define OPTION_LOGLEVEL 1004 | |
1c2facd1 RW |
101 | #define OPTION_TCLI 1005 |
102 | #define OPTION_DB_FILE 1006 | |
2950f5da | 103 | #define OPTION_LOGGING 1007 |
1a9f340b | 104 | #define OPTION_LIMIT_FDS 1008 |
e4e0229a | 105 | #define OPTION_SCRIPTDIR 1009 |
4f04a76b DL |
106 | |
107 | static const struct option lo_always[] = { | |
d62a17ae | 108 | {"help", no_argument, NULL, 'h'}, |
109 | {"version", no_argument, NULL, 'v'}, | |
110 | {"daemon", no_argument, NULL, 'd'}, | |
111 | {"module", no_argument, NULL, 'M'}, | |
ac4adef4 | 112 | {"profile", required_argument, NULL, 'F'}, |
33606a15 | 113 | {"pathspace", required_argument, NULL, 'N'}, |
d62a17ae | 114 | {"vty_socket", required_argument, NULL, OPTION_VTYSOCK}, |
115 | {"moduledir", required_argument, NULL, OPTION_MODULEDIR}, | |
e4e0229a | 116 | {"scriptdir", required_argument, NULL, OPTION_SCRIPTDIR}, |
f8507817 | 117 | {"log", required_argument, NULL, OPTION_LOG}, |
e9b4e74a | 118 | {"log-level", required_argument, NULL, OPTION_LOGLEVEL}, |
1c2facd1 | 119 | {"tcli", no_argument, NULL, OPTION_TCLI}, |
2950f5da | 120 | {"command-log-always", no_argument, NULL, OPTION_LOGGING}, |
1a9f340b | 121 | {"limit-fds", required_argument, NULL, OPTION_LIMIT_FDS}, |
d62a17ae | 122 | {NULL}}; |
4f04a76b | 123 | static const struct optspec os_always = { |
33606a15 | 124 | "hvdM:F:N:", |
4f04a76b DL |
125 | " -h, --help Display this help and exit\n" |
126 | " -v, --version Print program version\n" | |
eb05883f | 127 | " -d, --daemon Runs in daemon mode\n" |
30771d65 | 128 | " -M, --module Load specified module\n" |
ac4adef4 | 129 | " -F, --profile Use specified configuration profile\n" |
33606a15 | 130 | " -N, --pathspace Insert prefix into config & socket paths\n" |
80b4df3b | 131 | " --vty_socket Override vty socket path\n" |
f8507817 | 132 | " --moduledir Override modules directory\n" |
e4e0229a | 133 | " --scriptdir Override scripts directory\n" |
e9b4e74a | 134 | " --log Set Logging to stdout, syslog, or file:<name>\n" |
1c2facd1 | 135 | " --log-level Set Logging Level to use, debug, info, warn, etc\n" |
1a9f340b MS |
136 | " --tcli Use transaction-based CLI\n" |
137 | " --limit-fds Limit number of fds supported\n", | |
d62a17ae | 138 | lo_always}; |
4f04a76b DL |
139 | |
140 | ||
eb05883f | 141 | static const struct option lo_cfg_pid_dry[] = { |
d62a17ae | 142 | {"pid_file", required_argument, NULL, 'i'}, |
143 | {"config_file", required_argument, NULL, 'f'}, | |
1c2facd1 RW |
144 | #ifdef HAVE_SQLITE3 |
145 | {"db_file", required_argument, NULL, OPTION_DB_FILE}, | |
146 | #endif | |
d62a17ae | 147 | {"dryrun", no_argument, NULL, 'C'}, |
cff2b211 | 148 | {"terminal", no_argument, NULL, 't'}, |
d62a17ae | 149 | {NULL}}; |
eb05883f | 150 | static const struct optspec os_cfg_pid_dry = { |
33606a15 | 151 | "f:i:Ct", |
eb05883f DL |
152 | " -f, --config_file Set configuration file name\n" |
153 | " -i, --pid_file Set process identifier file name\n" | |
1c2facd1 RW |
154 | #ifdef HAVE_SQLITE3 |
155 | " --db_file Set database file name\n" | |
156 | #endif | |
cff2b211 DL |
157 | " -C, --dryrun Check configuration for validity and exit\n" |
158 | " -t, --terminal Open terminal session on stdio\n" | |
159 | " -d -t Daemonize after terminal session ends\n", | |
d62a17ae | 160 | lo_cfg_pid_dry}; |
eb05883f DL |
161 | |
162 | ||
163 | static const struct option lo_zclient[] = { | |
d62a17ae | 164 | {"socket", required_argument, NULL, 'z'}, |
165 | {NULL}}; | |
eb05883f | 166 | static const struct optspec os_zclient = { |
d62a17ae | 167 | "z:", " -z, --socket Set path of zebra socket\n", lo_zclient}; |
eb05883f DL |
168 | |
169 | ||
4f04a76b | 170 | static const struct option lo_vty[] = { |
d62a17ae | 171 | {"vty_addr", required_argument, NULL, 'A'}, |
172 | {"vty_port", required_argument, NULL, 'P'}, | |
173 | {NULL}}; | |
4f04a76b DL |
174 | static const struct optspec os_vty = { |
175 | "A:P:", | |
176 | " -A, --vty_addr Set vty's bind address\n" | |
177 | " -P, --vty_port Set vty's port number\n", | |
d62a17ae | 178 | lo_vty}; |
4f04a76b DL |
179 | |
180 | ||
d62a17ae | 181 | static const struct option lo_user[] = {{"user", required_argument, NULL, 'u'}, |
182 | {"group", required_argument, NULL, 'g'}, | |
183 | {NULL}}; | |
184 | static const struct optspec os_user = {"u:g:", | |
185 | " -u, --user User to run as\n" | |
186 | " -g, --group Group to run as\n", | |
187 | lo_user}; | |
4f04a76b | 188 | |
689f5a8c DL |
189 | bool frr_zclient_addr(struct sockaddr_storage *sa, socklen_t *sa_len, |
190 | const char *path) | |
191 | { | |
192 | memset(sa, 0, sizeof(*sa)); | |
193 | ||
194 | if (!path) | |
4e99f309 | 195 | path = frr_zclientpath; |
689f5a8c DL |
196 | |
197 | if (!strncmp(path, ZAPI_TCP_PATHNAME, strlen(ZAPI_TCP_PATHNAME))) { | |
5d13cd09 | 198 | /* note: this functionality is disabled at bottom */ |
689f5a8c DL |
199 | int af; |
200 | int port = ZEBRA_PORT; | |
201 | char *err = NULL; | |
202 | struct sockaddr_in *sin = NULL; | |
203 | struct sockaddr_in6 *sin6 = NULL; | |
204 | ||
205 | path += strlen(ZAPI_TCP_PATHNAME); | |
206 | ||
207 | switch (path[0]) { | |
208 | case '4': | |
209 | path++; | |
210 | af = AF_INET; | |
211 | break; | |
212 | case '6': | |
213 | path++; | |
996c9314 | 214 | /* fallthrough */ |
689f5a8c DL |
215 | default: |
216 | af = AF_INET6; | |
217 | break; | |
218 | } | |
219 | ||
220 | switch (path[0]) { | |
221 | case '\0': | |
222 | break; | |
223 | case ':': | |
224 | path++; | |
225 | port = strtoul(path, &err, 10); | |
226 | if (*err || !*path) | |
227 | return false; | |
228 | break; | |
229 | default: | |
230 | return false; | |
231 | } | |
232 | ||
233 | sa->ss_family = af; | |
234 | switch (af) { | |
235 | case AF_INET: | |
236 | sin = (struct sockaddr_in *)sa; | |
237 | sin->sin_port = htons(port); | |
238 | sin->sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
239 | *sa_len = sizeof(struct sockaddr_in); | |
240 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN | |
241 | sin->sin_len = *sa_len; | |
242 | #endif | |
243 | break; | |
244 | case AF_INET6: | |
245 | sin6 = (struct sockaddr_in6 *)sa; | |
246 | sin6->sin6_port = htons(port); | |
247 | inet_pton(AF_INET6, "::1", &sin6->sin6_addr); | |
248 | *sa_len = sizeof(struct sockaddr_in6); | |
249 | #ifdef SIN6_LEN | |
250 | sin6->sin6_len = *sa_len; | |
251 | #endif | |
252 | break; | |
253 | } | |
5d13cd09 DL |
254 | |
255 | #if 1 | |
256 | /* force-disable this path, because tcp-zebra is a | |
257 | * SECURITY ISSUE. there are no checks at all against | |
258 | * untrusted users on the local system connecting on TCP | |
259 | * and injecting bogus routing data into the entire routing | |
260 | * domain. | |
261 | * | |
262 | * The functionality is only left here because it may be | |
263 | * useful during development, in order to be able to get | |
264 | * tcpdump or wireshark watching ZAPI as TCP. If you want | |
265 | * to do that, flip the #if 1 above to #if 0. */ | |
266 | memset(sa, 0, sizeof(*sa)); | |
267 | return false; | |
268 | #endif | |
689f5a8c DL |
269 | } else { |
270 | /* "sun" is a #define on solaris */ | |
271 | struct sockaddr_un *suna = (struct sockaddr_un *)sa; | |
272 | ||
273 | suna->sun_family = AF_UNIX; | |
274 | strlcpy(suna->sun_path, path, sizeof(suna->sun_path)); | |
275 | #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN | |
276 | *sa_len = suna->sun_len = SUN_LEN(suna); | |
277 | #else | |
278 | *sa_len = sizeof(suna->sun_family) + strlen(suna->sun_path); | |
279 | #endif /* HAVE_STRUCT_SOCKADDR_UN_SUN_LEN */ | |
280 | #if 0 | |
281 | /* this is left here for future reference; Linux abstract | |
282 | * socket namespace support can be enabled by replacing | |
283 | * above #if 0 with #ifdef GNU_LINUX. | |
284 | * | |
285 | * THIS IS A SECURITY ISSUE, the abstract socket namespace | |
286 | * does not have user/group permission control on sockets. | |
287 | * we'd need to implement SCM_CREDENTIALS support first to | |
288 | * check that only proper users can connect to abstract | |
289 | * sockets. (same problem as tcp-zebra, except there is a | |
290 | * fix with SCM_CREDENTIALS. tcp-zebra has no such fix.) | |
291 | */ | |
292 | if (suna->sun_path[0] == '@') | |
293 | suna->sun_path[0] = '\0'; | |
294 | #endif | |
295 | } | |
296 | return true; | |
297 | } | |
298 | ||
4f04a76b DL |
299 | static struct frr_daemon_info *di = NULL; |
300 | ||
43e587c1 DS |
301 | void frr_init_vtydir(void) |
302 | { | |
303 | snprintf(frr_vtydir, sizeof(frr_vtydir), DAEMON_VTY_DIR, "", ""); | |
304 | } | |
305 | ||
4f04a76b DL |
306 | void frr_preinit(struct frr_daemon_info *daemon, int argc, char **argv) |
307 | { | |
308 | di = daemon; | |
309 | ||
310 | /* basename(), opencoded. */ | |
311 | char *p = strrchr(argv[0], '/'); | |
312 | di->progname = p ? p + 1 : argv[0]; | |
313 | ||
314 | umask(0027); | |
315 | ||
316 | opt_extend(&os_always); | |
eb05883f DL |
317 | if (!(di->flags & FRR_NO_CFG_PID_DRY)) |
318 | opt_extend(&os_cfg_pid_dry); | |
4f04a76b DL |
319 | if (!(di->flags & FRR_NO_PRIVSEP)) |
320 | opt_extend(&os_user); | |
eb05883f DL |
321 | if (!(di->flags & FRR_NO_ZCLIENT)) |
322 | opt_extend(&os_zclient); | |
4f04a76b DL |
323 | if (!(di->flags & FRR_NO_TCPVTY)) |
324 | opt_extend(&os_vty); | |
0a7c7856 DL |
325 | if (di->flags & FRR_DETACH_LATER) |
326 | nodetach_daemon = true; | |
eb05883f | 327 | |
43e587c1 | 328 | frr_init_vtydir(); |
eb05883f | 329 | snprintf(config_default, sizeof(config_default), "%s/%s.conf", |
d62a17ae | 330 | frr_sysconfdir, di->name); |
eb05883f | 331 | snprintf(pidfile_default, sizeof(pidfile_default), "%s/%s.pid", |
d62a17ae | 332 | frr_vtydir, di->name); |
43e587c1 DS |
333 | snprintf(frr_zclientpath, sizeof(frr_zclientpath), |
334 | ZEBRA_SERV_PATH, "", ""); | |
1c2facd1 RW |
335 | #ifdef HAVE_SQLITE3 |
336 | snprintf(dbfile_default, sizeof(dbfile_default), "%s/%s.db", | |
337 | frr_dbdir, di->name); | |
338 | #endif | |
b85120bc DL |
339 | |
340 | strlcpy(frr_protoname, di->logname, sizeof(frr_protoname)); | |
341 | strlcpy(frr_protonameinst, di->logname, sizeof(frr_protonameinst)); | |
689f5a8c | 342 | |
1c2facd1 | 343 | di->cli_mode = FRR_CLI_CLASSIC; |
4f04a76b DL |
344 | } |
345 | ||
346 | void frr_opt_add(const char *optstr, const struct option *longopts, | |
d62a17ae | 347 | const char *helpstr) |
4f04a76b | 348 | { |
d62a17ae | 349 | const struct optspec main_opts = {optstr, helpstr, longopts}; |
4f04a76b DL |
350 | opt_extend(&main_opts); |
351 | } | |
352 | ||
353 | void frr_help_exit(int status) | |
354 | { | |
355 | FILE *target = status ? stderr : stdout; | |
356 | ||
357 | if (status != 0) | |
358 | fprintf(stderr, "Invalid options.\n\n"); | |
359 | ||
360 | if (di->printhelp) | |
361 | di->printhelp(target); | |
362 | else | |
363 | fprintf(target, "Usage: %s [OPTION...]\n\n%s%s%s\n\n%s", | |
d62a17ae | 364 | di->progname, di->proghelp, di->copyright ? "\n\n" : "", |
365 | di->copyright ? di->copyright : "", comb_helpstr); | |
4f04a76b DL |
366 | fprintf(target, "\nReport bugs to %s\n", FRR_BUG_ADDRESS); |
367 | exit(status); | |
368 | } | |
369 | ||
30771d65 DL |
370 | struct option_chain { |
371 | struct option_chain *next; | |
372 | const char *arg; | |
373 | }; | |
80b4df3b | 374 | |
30771d65 | 375 | static struct option_chain *modules = NULL, **modnext = &modules; |
4f04a76b DL |
376 | static int errors = 0; |
377 | ||
378 | static int frr_opt(int opt) | |
379 | { | |
380 | static int vty_port_set = 0; | |
381 | static int vty_addr_set = 0; | |
30771d65 | 382 | struct option_chain *oc; |
4f04a76b DL |
383 | char *err; |
384 | ||
385 | switch (opt) { | |
386 | case 'h': | |
387 | frr_help_exit(0); | |
388 | break; | |
389 | case 'v': | |
390 | print_version(di->progname); | |
391 | exit(0); | |
392 | break; | |
eb05883f | 393 | case 'd': |
08c2d52a | 394 | di->daemon_mode = true; |
eb05883f | 395 | break; |
30771d65 DL |
396 | case 'M': |
397 | oc = XMALLOC(MTYPE_TMP, sizeof(*oc)); | |
398 | oc->arg = optarg; | |
399 | oc->next = NULL; | |
400 | *modnext = oc; | |
401 | modnext = &oc->next; | |
402 | break; | |
ac4adef4 DL |
403 | case 'F': |
404 | if (!frr_defaults_profile_valid(optarg)) { | |
405 | const char **p; | |
406 | FILE *ofd = stderr; | |
407 | ||
408 | if (!strcmp(optarg, "help")) | |
409 | ofd = stdout; | |
410 | else | |
411 | fprintf(stderr, | |
412 | "The \"%s\" configuration profile is not valid for this FRR version.\n", | |
413 | optarg); | |
414 | ||
415 | fprintf(ofd, "Available profiles are:\n"); | |
416 | for (p = frr_defaults_profiles; *p; p++) | |
417 | fprintf(ofd, "%s%s\n", | |
418 | strcmp(*p, DFLT_NAME) ? " " : " * ", | |
419 | *p); | |
420 | ||
421 | if (ofd == stdout) | |
422 | exit(0); | |
423 | fprintf(ofd, "\n"); | |
424 | errors++; | |
425 | break; | |
426 | } | |
427 | frr_defaults_profile_set(optarg); | |
428 | break; | |
eb05883f DL |
429 | case 'i': |
430 | if (di->flags & FRR_NO_CFG_PID_DRY) | |
431 | return 1; | |
432 | di->pid_file = optarg; | |
433 | break; | |
434 | case 'f': | |
435 | if (di->flags & FRR_NO_CFG_PID_DRY) | |
436 | return 1; | |
437 | di->config_file = optarg; | |
438 | break; | |
d1b4fc1f | 439 | case 'N': |
d1b4fc1f DL |
440 | if (di->pathspace) { |
441 | fprintf(stderr, | |
442 | "-N/--pathspace option specified more than once!\n"); | |
443 | errors++; | |
444 | break; | |
445 | } | |
43e587c1 DS |
446 | if (di->zpathspace) |
447 | fprintf(stderr, | |
f79f7a7b | 448 | "-N option overridden by -z for zebra named socket path\n"); |
43e587c1 | 449 | |
d1b4fc1f DL |
450 | if (strchr(optarg, '/') || strchr(optarg, '.')) { |
451 | fprintf(stderr, | |
452 | "slashes or dots are not permitted in the --pathspace option.\n"); | |
453 | errors++; | |
454 | break; | |
455 | } | |
456 | di->pathspace = optarg; | |
4e99f309 | 457 | |
43e587c1 DS |
458 | if (!di->zpathspace) |
459 | snprintf(frr_zclientpath, sizeof(frr_zclientpath), | |
460 | ZEBRA_SERV_PATH, "/", di->pathspace); | |
461 | snprintf(frr_vtydir, sizeof(frr_vtydir), DAEMON_VTY_DIR, "/", | |
462 | di->pathspace); | |
463 | snprintf(pidfile_default, sizeof(pidfile_default), "%s/%s.pid", | |
464 | frr_vtydir, di->name); | |
d1b4fc1f | 465 | break; |
1c2facd1 RW |
466 | #ifdef HAVE_SQLITE3 |
467 | case OPTION_DB_FILE: | |
468 | if (di->flags & FRR_NO_CFG_PID_DRY) | |
469 | return 1; | |
470 | di->db_file = optarg; | |
471 | break; | |
472 | #endif | |
eb05883f DL |
473 | case 'C': |
474 | if (di->flags & FRR_NO_CFG_PID_DRY) | |
475 | return 1; | |
08c2d52a | 476 | di->dryrun = true; |
eb05883f | 477 | break; |
cff2b211 DL |
478 | case 't': |
479 | if (di->flags & FRR_NO_CFG_PID_DRY) | |
480 | return 1; | |
08c2d52a | 481 | di->terminal = true; |
cff2b211 | 482 | break; |
eb05883f | 483 | case 'z': |
43e587c1 DS |
484 | di->zpathspace = true; |
485 | if (di->pathspace) | |
486 | fprintf(stderr, | |
487 | "-z option overrides -N option for zebra named socket path\n"); | |
eb05883f DL |
488 | if (di->flags & FRR_NO_ZCLIENT) |
489 | return 1; | |
689f5a8c | 490 | strlcpy(frr_zclientpath, optarg, sizeof(frr_zclientpath)); |
eb05883f | 491 | break; |
4f04a76b DL |
492 | case 'A': |
493 | if (di->flags & FRR_NO_TCPVTY) | |
494 | return 1; | |
495 | if (vty_addr_set) { | |
d62a17ae | 496 | fprintf(stderr, |
497 | "-A option specified more than once!\n"); | |
4f04a76b DL |
498 | errors++; |
499 | break; | |
500 | } | |
501 | vty_addr_set = 1; | |
502 | di->vty_addr = optarg; | |
503 | break; | |
504 | case 'P': | |
505 | if (di->flags & FRR_NO_TCPVTY) | |
506 | return 1; | |
507 | if (vty_port_set) { | |
d62a17ae | 508 | fprintf(stderr, |
509 | "-P option specified more than once!\n"); | |
4f04a76b DL |
510 | errors++; |
511 | break; | |
512 | } | |
513 | vty_port_set = 1; | |
514 | di->vty_port = strtoul(optarg, &err, 0); | |
515 | if (*err || !*optarg) { | |
d62a17ae | 516 | fprintf(stderr, |
517 | "invalid port number \"%s\" for -P option\n", | |
518 | optarg); | |
4f04a76b DL |
519 | errors++; |
520 | break; | |
521 | } | |
522 | break; | |
523 | case OPTION_VTYSOCK: | |
524 | if (di->vty_sock_path) { | |
d62a17ae | 525 | fprintf(stderr, |
526 | "--vty_socket option specified more than once!\n"); | |
4f04a76b DL |
527 | errors++; |
528 | break; | |
529 | } | |
530 | di->vty_sock_path = optarg; | |
531 | break; | |
80b4df3b MW |
532 | case OPTION_MODULEDIR: |
533 | if (di->module_path) { | |
d62a17ae | 534 | fprintf(stderr, |
535 | "----moduledir option specified more than once!\n"); | |
80b4df3b MW |
536 | errors++; |
537 | break; | |
538 | } | |
539 | di->module_path = optarg; | |
540 | break; | |
e4e0229a QY |
541 | case OPTION_SCRIPTDIR: |
542 | if (di->script_path) { | |
543 | fprintf(stderr, "--scriptdir option specified more than once!\n"); | |
544 | errors++; | |
545 | break; | |
546 | } | |
547 | di->script_path = optarg; | |
548 | break; | |
1c2facd1 RW |
549 | case OPTION_TCLI: |
550 | di->cli_mode = FRR_CLI_TRANSACTIONAL; | |
551 | break; | |
4f04a76b DL |
552 | case 'u': |
553 | if (di->flags & FRR_NO_PRIVSEP) | |
554 | return 1; | |
555 | di->privs->user = optarg; | |
556 | break; | |
557 | case 'g': | |
558 | if (di->flags & FRR_NO_PRIVSEP) | |
559 | return 1; | |
560 | di->privs->group = optarg; | |
561 | break; | |
f8507817 DS |
562 | case OPTION_LOG: |
563 | di->early_logging = optarg; | |
564 | break; | |
e9b4e74a DS |
565 | case OPTION_LOGLEVEL: |
566 | di->early_loglevel = optarg; | |
567 | break; | |
2950f5da DS |
568 | case OPTION_LOGGING: |
569 | di->log_always = true; | |
570 | break; | |
1a9f340b MS |
571 | case OPTION_LIMIT_FDS: |
572 | di->limit_fds = strtoul(optarg, &err, 0); | |
573 | break; | |
4f04a76b DL |
574 | default: |
575 | return 1; | |
576 | } | |
577 | return 0; | |
578 | } | |
579 | ||
d62a17ae | 580 | int frr_getopt(int argc, char *const argv[], int *longindex) |
4f04a76b DL |
581 | { |
582 | int opt; | |
583 | int lidx; | |
584 | ||
585 | comb_next_lo->name = NULL; | |
586 | ||
587 | do { | |
588 | opt = getopt_long(argc, argv, comb_optstr, comb_lo, &lidx); | |
589 | if (frr_opt(opt)) | |
590 | break; | |
591 | } while (opt != -1); | |
592 | ||
593 | if (opt == -1 && errors) | |
594 | frr_help_exit(1); | |
595 | if (longindex) | |
596 | *longindex = lidx; | |
597 | return opt; | |
598 | } | |
599 | ||
beaa5470 DL |
600 | static void frr_mkdir(const char *path, bool strip) |
601 | { | |
602 | char buf[256]; | |
603 | mode_t prev; | |
604 | int ret; | |
605 | struct zprivs_ids_t ids; | |
606 | ||
607 | if (strip) { | |
608 | char *slash = strrchr(path, '/'); | |
609 | size_t plen; | |
610 | if (!slash) | |
611 | return; | |
612 | plen = slash - path; | |
613 | if (plen > sizeof(buf) - 1) | |
614 | return; | |
615 | memcpy(buf, path, plen); | |
616 | buf[plen] = '\0'; | |
617 | path = buf; | |
618 | } | |
619 | ||
620 | /* o+rx (..5) is needed for the frrvty group to work properly; | |
621 | * without it, users in the frrvty group can't access the vty sockets. | |
622 | */ | |
623 | prev = umask(0022); | |
624 | ret = mkdir(path, 0755); | |
625 | umask(prev); | |
626 | ||
627 | if (ret != 0) { | |
628 | /* if EEXIST, return without touching the permissions, | |
629 | * so user-set custom permissions are left in place | |
630 | */ | |
631 | if (errno == EEXIST) | |
632 | return; | |
633 | ||
1c50c1c0 QY |
634 | flog_err(EC_LIB_SYSTEM_CALL, "failed to mkdir \"%s\": %s", path, |
635 | strerror(errno)); | |
beaa5470 DL |
636 | return; |
637 | } | |
638 | ||
639 | zprivs_get_ids(&ids); | |
640 | if (chown(path, ids.uid_normal, ids.gid_normal)) | |
1c50c1c0 QY |
641 | flog_err(EC_LIB_SYSTEM_CALL, "failed to chown \"%s\": %s", path, |
642 | strerror(errno)); | |
beaa5470 DL |
643 | } |
644 | ||
a5b38c5b | 645 | static struct thread_master *master; |
4f04a76b DL |
646 | struct thread_master *frr_init(void) |
647 | { | |
30771d65 DL |
648 | struct option_chain *oc; |
649 | struct frrmod_runtime *module; | |
0bdeb5e5 | 650 | struct zprivs_ids_t ids; |
30771d65 | 651 | char moderr[256]; |
d1b4fc1f | 652 | char p_instance[16] = "", p_pathspace[256] = ""; |
80b4df3b MW |
653 | const char *dir; |
654 | dir = di->module_path ? di->module_path : frr_moduledir; | |
4f04a76b DL |
655 | |
656 | srandom(time(NULL)); | |
ac4adef4 | 657 | frr_defaults_apply(); |
4f04a76b | 658 | |
d1b4fc1f | 659 | if (di->instance) { |
d62a17ae | 660 | snprintf(frr_protonameinst, sizeof(frr_protonameinst), "%s[%u]", |
661 | di->logname, di->instance); | |
d1b4fc1f DL |
662 | snprintf(p_instance, sizeof(p_instance), "-%d", di->instance); |
663 | } | |
664 | if (di->pathspace) | |
b39404c1 | 665 | snprintf(p_pathspace, sizeof(p_pathspace), "%s/", |
d1b4fc1f DL |
666 | di->pathspace); |
667 | ||
36077833 | 668 | snprintf(config_default, sizeof(config_default), "%s%s%s%s.conf", |
d1b4fc1f | 669 | frr_sysconfdir, p_pathspace, di->name, p_instance); |
43e587c1 DS |
670 | snprintf(pidfile_default, sizeof(pidfile_default), "%s/%s%s.pid", |
671 | frr_vtydir, di->name, p_instance); | |
1c2facd1 RW |
672 | #ifdef HAVE_SQLITE3 |
673 | snprintf(dbfile_default, sizeof(dbfile_default), "%s/%s%s%s.db", | |
674 | frr_dbdir, p_pathspace, di->name, p_instance); | |
675 | #endif | |
b85120bc | 676 | |
37a1f2fb | 677 | zprivs_preinit(di->privs); |
0bdeb5e5 | 678 | zprivs_get_ids(&ids); |
37a1f2fb | 679 | |
0bdeb5e5 DL |
680 | zlog_init(di->progname, di->logname, di->instance, |
681 | ids.uid_normal, ids.gid_normal); | |
f8507817 | 682 | |
e9b4e74a | 683 | command_setup_early_logging(di->early_logging, di->early_loglevel); |
4f04a76b | 684 | |
689f5a8c DL |
685 | if (!frr_zclient_addr(&zclient_addr, &zclient_addr_len, |
686 | frr_zclientpath)) { | |
687 | fprintf(stderr, "Invalid zserv socket path: %s\n", | |
688 | frr_zclientpath); | |
689 | exit(1); | |
690 | } | |
691 | ||
b8c1fde3 DL |
692 | /* don't mkdir these as root... */ |
693 | if (!(di->flags & FRR_NO_PRIVSEP)) { | |
694 | if (!di->pid_file || !di->vty_path) | |
695 | frr_mkdir(frr_vtydir, false); | |
696 | if (di->pid_file) | |
697 | frr_mkdir(di->pid_file, true); | |
698 | if (di->vty_path) | |
699 | frr_mkdir(di->vty_path, true); | |
700 | } | |
beaa5470 | 701 | |
30771d65 DL |
702 | frrmod_init(di->module); |
703 | while (modules) { | |
704 | modules = (oc = modules)->next; | |
80b4df3b | 705 | module = frrmod_load(oc->arg, dir, moderr, sizeof(moderr)); |
30771d65 DL |
706 | if (!module) { |
707 | fprintf(stderr, "%s\n", moderr); | |
708 | exit(1); | |
709 | } | |
710 | XFREE(MTYPE_TMP, oc); | |
711 | } | |
712 | ||
4f04a76b DL |
713 | zprivs_init(di->privs); |
714 | ||
972a411c | 715 | master = thread_master_create(NULL); |
4f04a76b DL |
716 | signal_init(master, di->n_signals, di->signals); |
717 | ||
1c2facd1 RW |
718 | #ifdef HAVE_SQLITE3 |
719 | if (!di->db_file) | |
720 | di->db_file = dbfile_default; | |
721 | db_init(di->db_file); | |
722 | #endif | |
723 | ||
857b5446 DL |
724 | if (di->flags & FRR_LIMITED_CLI) |
725 | cmd_init(-1); | |
726 | else | |
727 | cmd_init(1); | |
1c2facd1 | 728 | |
2950f5da | 729 | vty_init(master, di->log_always); |
1c0d8808 | 730 | lib_cmd_init(); |
857b5446 | 731 | |
b9b4c061 | 732 | frr_pthread_init(); |
fa22080d | 733 | #ifdef HAVE_SCRIPTING |
e4e0229a | 734 | frrscript_init(di->script_path ? di->script_path : frr_scriptdir); |
fa22080d | 735 | #endif |
b9b4c061 | 736 | |
85cd2f9f | 737 | log_ref_init(); |
1f9128d6 | 738 | log_ref_vty_init(); |
b66d022e DS |
739 | lib_error_init(); |
740 | ||
b90204a8 | 741 | yang_init(true); |
ae0994f6 DS |
742 | |
743 | debug_init_cli(); | |
744 | ||
390a8862 | 745 | nb_init(master, di->yang_modules, di->n_yang_modules, true); |
1ae9686c RW |
746 | if (nb_db_init() != NB_OK) |
747 | flog_warn(EC_LIB_NB_DATABASE, | |
748 | "%s: failed to initialize northbound database", | |
749 | __func__); | |
1c2facd1 | 750 | |
4f04a76b DL |
751 | return master; |
752 | } | |
753 | ||
1c2facd1 RW |
754 | const char *frr_get_progname(void) |
755 | { | |
756 | return di ? di->progname : NULL; | |
757 | } | |
758 | ||
759 | enum frr_cli_mode frr_get_cli_mode(void) | |
760 | { | |
761 | return di ? di->cli_mode : FRR_CLI_CLASSIC; | |
762 | } | |
763 | ||
1a9f340b MS |
764 | uint32_t frr_get_fd_limit(void) |
765 | { | |
766 | return di ? di->limit_fds : 0; | |
767 | } | |
768 | ||
154b9e8f DL |
769 | static int rcvd_signal = 0; |
770 | ||
771 | static void rcv_signal(int signum) | |
772 | { | |
773 | rcvd_signal = signum; | |
774 | /* poll() is interrupted by the signal; handled below */ | |
775 | } | |
776 | ||
f43fbf83 DL |
777 | static void frr_daemon_wait(int fd) |
778 | { | |
779 | struct pollfd pfd[1]; | |
780 | int ret; | |
781 | pid_t exitpid; | |
782 | int exitstat; | |
154b9e8f DL |
783 | sigset_t sigs, prevsigs; |
784 | ||
785 | sigemptyset(&sigs); | |
786 | sigaddset(&sigs, SIGTSTP); | |
787 | sigaddset(&sigs, SIGQUIT); | |
788 | sigaddset(&sigs, SIGINT); | |
789 | sigprocmask(SIG_BLOCK, &sigs, &prevsigs); | |
790 | ||
791 | struct sigaction sa = { | |
792 | .sa_handler = rcv_signal, .sa_flags = SA_RESETHAND, | |
793 | }; | |
794 | sigemptyset(&sa.sa_mask); | |
795 | sigaction(SIGTSTP, &sa, NULL); | |
796 | sigaction(SIGQUIT, &sa, NULL); | |
797 | sigaction(SIGINT, &sa, NULL); | |
f43fbf83 DL |
798 | |
799 | do { | |
154b9e8f DL |
800 | char buf[1]; |
801 | ssize_t nrecv; | |
802 | ||
f43fbf83 DL |
803 | pfd[0].fd = fd; |
804 | pfd[0].events = POLLIN; | |
805 | ||
154b9e8f DL |
806 | rcvd_signal = 0; |
807 | ||
996c9314 | 808 | #if defined(HAVE_PPOLL) |
154b9e8f DL |
809 | ret = ppoll(pfd, 1, NULL, &prevsigs); |
810 | #elif defined(HAVE_POLLTS) | |
811 | ret = pollts(pfd, 1, NULL, &prevsigs); | |
812 | #else | |
813 | /* racy -- only used on FreeBSD 9 */ | |
814 | sigset_t tmpsigs; | |
815 | sigprocmask(SIG_SETMASK, &prevsigs, &tmpsigs); | |
f43fbf83 | 816 | ret = poll(pfd, 1, -1); |
154b9e8f DL |
817 | sigprocmask(SIG_SETMASK, &tmpsigs, NULL); |
818 | #endif | |
f43fbf83 DL |
819 | if (ret < 0 && errno != EINTR && errno != EAGAIN) { |
820 | perror("poll()"); | |
821 | exit(1); | |
822 | } | |
154b9e8f DL |
823 | switch (rcvd_signal) { |
824 | case SIGTSTP: | |
825 | send(fd, "S", 1, 0); | |
826 | do { | |
827 | nrecv = recv(fd, buf, sizeof(buf), 0); | |
828 | } while (nrecv == -1 | |
829 | && (errno == EINTR || errno == EAGAIN)); | |
830 | ||
831 | raise(SIGTSTP); | |
832 | sigaction(SIGTSTP, &sa, NULL); | |
833 | send(fd, "R", 1, 0); | |
834 | break; | |
835 | case SIGINT: | |
836 | send(fd, "I", 1, 0); | |
837 | break; | |
838 | case SIGQUIT: | |
839 | send(fd, "Q", 1, 0); | |
840 | break; | |
841 | } | |
f43fbf83 DL |
842 | } while (ret <= 0); |
843 | ||
844 | exitpid = waitpid(-1, &exitstat, WNOHANG); | |
845 | if (exitpid == 0) | |
846 | /* child successfully went to main loop & closed socket */ | |
847 | exit(0); | |
848 | ||
849 | /* child failed one way or another ... */ | |
6bd2b360 DL |
850 | if (WIFEXITED(exitstat) && WEXITSTATUS(exitstat) == 0) |
851 | /* can happen in --terminal case if exit is fast enough */ | |
852 | (void)0; | |
853 | else if (WIFEXITED(exitstat)) | |
f43fbf83 DL |
854 | fprintf(stderr, "%s failed to start, exited %d\n", di->name, |
855 | WEXITSTATUS(exitstat)); | |
856 | else if (WIFSIGNALED(exitstat)) | |
857 | fprintf(stderr, "%s crashed in startup, signal %d\n", di->name, | |
858 | WTERMSIG(exitstat)); | |
859 | else | |
860 | fprintf(stderr, "%s failed to start, unknown problem\n", | |
861 | di->name); | |
862 | exit(1); | |
863 | } | |
864 | ||
865 | static int daemon_ctl_sock = -1; | |
866 | ||
867 | static void frr_daemonize(void) | |
868 | { | |
869 | int fds[2]; | |
870 | pid_t pid; | |
871 | ||
872 | if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds)) { | |
873 | perror("socketpair() for daemon control"); | |
874 | exit(1); | |
875 | } | |
876 | set_cloexec(fds[0]); | |
877 | set_cloexec(fds[1]); | |
878 | ||
879 | pid = fork(); | |
880 | if (pid < 0) { | |
881 | perror("fork()"); | |
882 | exit(1); | |
883 | } | |
884 | if (pid == 0) { | |
885 | /* child */ | |
886 | close(fds[0]); | |
887 | if (setsid() < 0) { | |
888 | perror("setsid()"); | |
889 | exit(1); | |
890 | } | |
891 | ||
892 | daemon_ctl_sock = fds[1]; | |
893 | return; | |
894 | } | |
895 | ||
896 | close(fds[1]); | |
897 | frr_daemon_wait(fds[0]); | |
898 | } | |
899 | ||
9e224e60 DS |
900 | /* |
901 | * Why is this a thread? | |
902 | * | |
903 | * The read in of config for integrated config happens *after* | |
904 | * thread execution starts( because it is passed in via a vtysh -b -n ) | |
905 | * While if you are not using integrated config we want the ability | |
906 | * to read the config in after thread execution starts, so that | |
907 | * we can match this behavior. | |
908 | */ | |
909 | static int frr_config_read_in(struct thread *t) | |
4f04a76b | 910 | { |
91f9fd78 RW |
911 | if (!vty_read_config(vty_shared_candidate_config, di->config_file, |
912 | config_default) | |
913 | && di->backup_config_file) { | |
fe64533a DS |
914 | char *orig = XSTRDUP(MTYPE_TMP, host_config_get()); |
915 | ||
573de11f DS |
916 | zlog_info("Attempting to read backup config file: %s specified", |
917 | di->backup_config_file); | |
91f9fd78 RW |
918 | vty_read_config(vty_shared_candidate_config, |
919 | di->backup_config_file, config_default); | |
fe64533a DS |
920 | |
921 | host_config_set(orig); | |
922 | XFREE(MTYPE_TMP, orig); | |
573de11f | 923 | } |
1c2facd1 RW |
924 | |
925 | /* | |
91f9fd78 RW |
926 | * Automatically commit the candidate configuration after |
927 | * reading the configuration file. | |
1c2facd1 | 928 | */ |
91f9fd78 | 929 | if (frr_get_cli_mode() == FRR_CLI_TRANSACTIONAL) { |
13d6b9c1 | 930 | struct nb_context context = {}; |
df5eda3d | 931 | char errmsg[BUFSIZ] = {0}; |
91f9fd78 RW |
932 | int ret; |
933 | ||
13d6b9c1 RW |
934 | context.client = NB_CLIENT_CLI; |
935 | ret = nb_candidate_commit(&context, vty_shared_candidate_config, | |
df5eda3d RW |
936 | true, "Read configuration file", NULL, |
937 | errmsg, sizeof(errmsg)); | |
91f9fd78 | 938 | if (ret != NB_OK && ret != NB_ERR_NO_CHANGES) |
df5eda3d RW |
939 | zlog_err( |
940 | "%s: failed to read configuration file: %s (%s)", | |
941 | __func__, nb_err_name(ret), errmsg); | |
91f9fd78 | 942 | } |
1c2facd1 | 943 | |
88e635ee RW |
944 | hook_call(frr_very_late_init, master); |
945 | ||
9e224e60 DS |
946 | return 0; |
947 | } | |
948 | ||
949 | void frr_config_fork(void) | |
950 | { | |
951 | hook_call(frr_late_init, master); | |
eb05883f | 952 | |
0a7c7856 DL |
953 | if (!(di->flags & FRR_NO_CFG_PID_DRY)) { |
954 | /* Don't start execution if we are in dry-run mode */ | |
955 | if (di->dryrun) { | |
956 | frr_config_read_in(NULL); | |
957 | exit(0); | |
958 | } | |
9e224e60 | 959 | |
0a7c7856 DL |
960 | thread_add_event(master, frr_config_read_in, NULL, 0, |
961 | &di->read_in); | |
962 | } | |
eb05883f | 963 | |
154b9e8f | 964 | if (di->daemon_mode || di->terminal) |
f43fbf83 | 965 | frr_daemonize(); |
eb05883f DL |
966 | |
967 | if (!di->pid_file) | |
968 | di->pid_file = pidfile_default; | |
d62a17ae | 969 | pid_output(di->pid_file); |
e2be2643 | 970 | zlog_tls_buffer_init(); |
eb05883f DL |
971 | } |
972 | ||
0a7c7856 | 973 | static void frr_vty_serv(void) |
eb05883f | 974 | { |
d62a17ae | 975 | /* allow explicit override of vty_path in the future |
eb05883f DL |
976 | * (not currently set anywhere) */ |
977 | if (!di->vty_path) { | |
978 | const char *dir; | |
d1b4fc1f DL |
979 | char defvtydir[256]; |
980 | ||
43e587c1 | 981 | snprintf(defvtydir, sizeof(defvtydir), "%s", frr_vtydir); |
d1b4fc1f DL |
982 | |
983 | dir = di->vty_sock_path ? di->vty_sock_path : defvtydir; | |
eb05883f DL |
984 | |
985 | if (di->instance) | |
986 | snprintf(vtypath_default, sizeof(vtypath_default), | |
d62a17ae | 987 | "%s/%s-%d.vty", dir, di->name, di->instance); |
eb05883f DL |
988 | else |
989 | snprintf(vtypath_default, sizeof(vtypath_default), | |
d62a17ae | 990 | "%s/%s.vty", dir, di->name); |
eb05883f DL |
991 | |
992 | di->vty_path = vtypath_default; | |
993 | } | |
994 | ||
995 | vty_serv_sock(di->vty_addr, di->vty_port, di->vty_path); | |
4f04a76b DL |
996 | } |
997 | ||
0a7c7856 DL |
998 | static void frr_check_detach(void) |
999 | { | |
1000 | if (nodetach_term || nodetach_daemon) | |
1001 | return; | |
1002 | ||
1003 | if (daemon_ctl_sock != -1) | |
1004 | close(daemon_ctl_sock); | |
1005 | daemon_ctl_sock = -1; | |
1006 | } | |
1007 | ||
154b9e8f | 1008 | static void frr_terminal_close(int isexit) |
cff2b211 | 1009 | { |
993bab89 RW |
1010 | int nullfd; |
1011 | ||
0a7c7856 DL |
1012 | nodetach_term = false; |
1013 | frr_check_detach(); | |
154b9e8f DL |
1014 | |
1015 | if (!di->daemon_mode || isexit) { | |
cff2b211 | 1016 | printf("\n%s exiting\n", di->name); |
154b9e8f DL |
1017 | if (!isexit) |
1018 | raise(SIGINT); | |
1019 | return; | |
cff2b211 DL |
1020 | } else { |
1021 | printf("\n%s daemonizing\n", di->name); | |
1022 | fflush(stdout); | |
1023 | } | |
1024 | ||
993bab89 RW |
1025 | nullfd = open("/dev/null", O_RDONLY | O_NOCTTY); |
1026 | if (nullfd == -1) { | |
450971aa | 1027 | flog_err_sys(EC_LIB_SYSTEM_CALL, |
09c866e3 QY |
1028 | "%s: failed to open /dev/null: %s", __func__, |
1029 | safe_strerror(errno)); | |
993bab89 RW |
1030 | } else { |
1031 | dup2(nullfd, 0); | |
1032 | dup2(nullfd, 1); | |
1033 | dup2(nullfd, 2); | |
1034 | close(nullfd); | |
1035 | } | |
154b9e8f | 1036 | } |
cff2b211 | 1037 | |
154b9e8f DL |
1038 | static struct thread *daemon_ctl_thread = NULL; |
1039 | ||
1040 | static int frr_daemon_ctl(struct thread *t) | |
1041 | { | |
1042 | char buf[1]; | |
1043 | ssize_t nr; | |
1044 | ||
1045 | nr = recv(daemon_ctl_sock, buf, sizeof(buf), 0); | |
1046 | if (nr < 0 && (errno == EINTR || errno == EAGAIN)) | |
1047 | goto out; | |
1048 | if (nr <= 0) | |
1049 | return 0; | |
1050 | ||
1051 | switch (buf[0]) { | |
996c9314 | 1052 | case 'S': /* SIGTSTP */ |
154b9e8f | 1053 | vty_stdio_suspend(); |
e339d7c0 | 1054 | if (send(daemon_ctl_sock, "s", 1, 0) < 0) |
1055 | zlog_err("%s send(\"s\") error (SIGTSTP propagation)", | |
1056 | (di && di->name ? di->name : "")); | |
154b9e8f | 1057 | break; |
996c9314 | 1058 | case 'R': /* SIGTCNT [implicit] */ |
154b9e8f DL |
1059 | vty_stdio_resume(); |
1060 | break; | |
996c9314 | 1061 | case 'I': /* SIGINT */ |
154b9e8f DL |
1062 | di->daemon_mode = false; |
1063 | raise(SIGINT); | |
1064 | break; | |
996c9314 | 1065 | case 'Q': /* SIGQUIT */ |
154b9e8f DL |
1066 | di->daemon_mode = true; |
1067 | vty_stdio_close(); | |
1068 | break; | |
cff2b211 | 1069 | } |
154b9e8f DL |
1070 | |
1071 | out: | |
1072 | thread_add_read(master, frr_daemon_ctl, NULL, daemon_ctl_sock, | |
1073 | &daemon_ctl_thread); | |
1074 | return 0; | |
cff2b211 DL |
1075 | } |
1076 | ||
0a7c7856 DL |
1077 | void frr_detach(void) |
1078 | { | |
1079 | nodetach_daemon = false; | |
1080 | frr_check_detach(); | |
1081 | } | |
1082 | ||
16077f2f DL |
1083 | void frr_run(struct thread_master *master) |
1084 | { | |
1085 | char instanceinfo[64] = ""; | |
1086 | ||
1087 | frr_vty_serv(); | |
1088 | ||
1089 | if (di->instance) | |
1090 | snprintf(instanceinfo, sizeof(instanceinfo), "instance %u ", | |
d62a17ae | 1091 | di->instance); |
1092 | ||
1093 | zlog_notice("%s %s starting: %svty@%d%s", di->name, FRR_VERSION, | |
1094 | instanceinfo, di->vty_port, di->startinfo); | |
16077f2f | 1095 | |
cff2b211 | 1096 | if (di->terminal) { |
0a7c7856 DL |
1097 | nodetach_term = true; |
1098 | ||
cff2b211 | 1099 | vty_stdio(frr_terminal_close); |
154b9e8f DL |
1100 | if (daemon_ctl_sock != -1) { |
1101 | set_nonblocking(daemon_ctl_sock); | |
1102 | thread_add_read(master, frr_daemon_ctl, NULL, | |
1103 | daemon_ctl_sock, &daemon_ctl_thread); | |
1104 | } | |
eef3d030 | 1105 | } else if (di->daemon_mode) { |
c9c8d0d1 | 1106 | int nullfd = open("/dev/null", O_RDONLY | O_NOCTTY); |
993bab89 | 1107 | if (nullfd == -1) { |
450971aa | 1108 | flog_err_sys(EC_LIB_SYSTEM_CALL, |
09c866e3 QY |
1109 | "%s: failed to open /dev/null: %s", |
1110 | __func__, safe_strerror(errno)); | |
993bab89 RW |
1111 | } else { |
1112 | dup2(nullfd, 0); | |
1113 | dup2(nullfd, 1); | |
1114 | dup2(nullfd, 2); | |
1115 | close(nullfd); | |
1116 | } | |
c9c8d0d1 | 1117 | |
0a7c7856 | 1118 | frr_check_detach(); |
f43fbf83 DL |
1119 | } |
1120 | ||
d34cb7f0 | 1121 | /* end fixed stderr startup logging */ |
0bdeb5e5 | 1122 | zlog_startup_end(); |
d34cb7f0 | 1123 | |
16077f2f DL |
1124 | struct thread thread; |
1125 | while (thread_fetch(master, &thread)) | |
1126 | thread_call(&thread); | |
1127 | } | |
03951374 DL |
1128 | |
1129 | void frr_early_fini(void) | |
1130 | { | |
1131 | hook_call(frr_early_fini); | |
1132 | } | |
1133 | ||
1134 | void frr_fini(void) | |
1135 | { | |
9eed278b DL |
1136 | FILE *fp; |
1137 | char filename[128]; | |
1138 | int have_leftovers; | |
1139 | ||
03951374 DL |
1140 | hook_call(frr_fini); |
1141 | ||
03951374 DL |
1142 | vty_terminate(); |
1143 | cmd_terminate(); | |
1c2facd1 RW |
1144 | nb_terminate(); |
1145 | yang_terminate(); | |
1146 | #ifdef HAVE_SQLITE3 | |
1147 | db_close(); | |
1148 | #endif | |
85cd2f9f | 1149 | log_ref_fini(); |
b9b4c061 | 1150 | frr_pthread_finish(); |
03951374 DL |
1151 | zprivs_terminate(di->privs); |
1152 | /* signal_init -> nothing needed */ | |
1153 | thread_master_free(master); | |
e5716b16 | 1154 | master = NULL; |
0bdeb5e5 DL |
1155 | zlog_tls_buffer_fini(); |
1156 | zlog_fini(); | |
03951374 | 1157 | /* frrmod_init -> nothing needed / hooks */ |
3e41733f | 1158 | rcu_shutdown(); |
9eed278b DL |
1159 | |
1160 | if (!debug_memstats_at_exit) | |
1161 | return; | |
1162 | ||
1163 | have_leftovers = log_memstats(stderr, di->name); | |
1164 | ||
1165 | /* in case we decide at runtime that we want exit-memstats for | |
1166 | * a daemon, but it has no stderr because it's daemonized | |
1167 | * (only do this if we actually have something to print though) | |
1168 | */ | |
1169 | if (!have_leftovers) | |
1170 | return; | |
1171 | ||
996c9314 LB |
1172 | snprintf(filename, sizeof(filename), "/tmp/frr-memstats-%s-%llu-%llu", |
1173 | di->name, (unsigned long long)getpid(), | |
9eed278b DL |
1174 | (unsigned long long)time(NULL)); |
1175 | ||
1176 | fp = fopen(filename, "w"); | |
1177 | if (fp) { | |
1178 | log_memstats(fp, di->name); | |
1179 | fclose(fp); | |
1180 | } | |
03951374 | 1181 | } |
42efb0d4 DL |
1182 | |
1183 | #ifdef INTERP | |
1184 | static const char interp[] | |
1185 | __attribute__((section(".interp"), used)) = INTERP; | |
1186 | #endif | |
1187 | /* | |
1188 | * executable entry point for libfrr.so | |
1189 | * | |
1190 | * note that libc initialization is skipped for this so the set of functions | |
1191 | * that can be called is rather limited | |
1192 | */ | |
1193 | extern void _libfrr_version(void) | |
1194 | __attribute__((visibility("hidden"), noreturn)); | |
1195 | void _libfrr_version(void) | |
1196 | { | |
1197 | const char banner[] = | |
1198 | FRR_FULL_NAME " " FRR_VERSION ".\n" | |
1199 | FRR_COPYRIGHT GIT_INFO "\n" | |
1200 | "configured with:\n " FRR_CONFIG_ARGS "\n"; | |
1201 | write(1, banner, sizeof(banner) - 1); | |
1202 | _exit(0); | |
1203 | } |