diff options
Diffstat (limited to 'lib/libfrr.c')
| -rw-r--r-- | lib/libfrr.c | 70 |
1 files changed, 56 insertions, 14 deletions
diff --git a/lib/libfrr.c b/lib/libfrr.c index 2bce4766d3..35a6da577f 100644 --- a/lib/libfrr.c +++ b/lib/libfrr.c @@ -54,6 +54,7 @@ static char pidfile_default[512]; static char vtypath_default[256]; bool debug_memstats_at_exit = 0; +static bool nodetach_term, nodetach_daemon; static char comb_optstr[256]; static struct option comb_lo[64]; @@ -281,6 +282,8 @@ void frr_preinit(struct frr_daemon_info *daemon, int argc, char **argv) opt_extend(&os_zclient); if (!(di->flags & FRR_NO_TCPVTY)) opt_extend(&os_vty); + if (di->flags & FRR_DETACH_LATER) + nodetach_daemon = true; snprintf(config_default, sizeof(config_default), "%s/%s.conf", frr_sysconfdir, di->name); @@ -767,13 +770,16 @@ void frr_config_fork(void) { hook_call(frr_late_init, master); - /* Don't start execution if we are in dry-run mode */ - if (di->dryrun) { - frr_config_read_in(NULL); - exit(0); - } + if (!(di->flags & FRR_NO_CFG_PID_DRY)) { + /* Don't start execution if we are in dry-run mode */ + if (di->dryrun) { + frr_config_read_in(NULL); + exit(0); + } - thread_add_event(master, frr_config_read_in, NULL, 0, &di->read_in); + thread_add_event(master, frr_config_read_in, NULL, 0, + &di->read_in); + } if (di->daemon_mode || di->terminal) frr_daemonize(); @@ -783,7 +789,7 @@ void frr_config_fork(void) pid_output(di->pid_file); } -void frr_vty_serv(void) +static void frr_vty_serv(void) { /* allow explicit override of vty_path in the future * (not currently set anywhere) */ @@ -810,14 +816,22 @@ void frr_vty_serv(void) vty_serv_sock(di->vty_addr, di->vty_port, di->vty_path); } +static void frr_check_detach(void) +{ + if (nodetach_term || nodetach_daemon) + return; + + if (daemon_ctl_sock != -1) + close(daemon_ctl_sock); + daemon_ctl_sock = -1; +} + static void frr_terminal_close(int isexit) { int nullfd; - if (daemon_ctl_sock != -1) { - close(daemon_ctl_sock); - daemon_ctl_sock = -1; - } + nodetach_term = false; + frr_check_detach(); if (!di->daemon_mode || isexit) { printf("\n%s exiting\n", di->name); @@ -881,6 +895,12 @@ out: return 0; } +void frr_detach(void) +{ + nodetach_daemon = false; + frr_check_detach(); +} + void frr_run(struct thread_master *master) { char instanceinfo[64] = ""; @@ -895,6 +915,8 @@ void frr_run(struct thread_master *master) instanceinfo, di->vty_port, di->startinfo); if (di->terminal) { + nodetach_term = true; + vty_stdio(frr_terminal_close); if (daemon_ctl_sock != -1) { set_nonblocking(daemon_ctl_sock); @@ -914,9 +936,7 @@ void frr_run(struct thread_master *master) close(nullfd); } - if (daemon_ctl_sock != -1) - close(daemon_ctl_sock); - daemon_ctl_sock = -1; + frr_check_detach(); } /* end fixed stderr startup logging */ @@ -973,3 +993,25 @@ void frr_fini(void) fclose(fp); } } + +#ifdef INTERP +static const char interp[] + __attribute__((section(".interp"), used)) = INTERP; +#endif +/* + * executable entry point for libfrr.so + * + * note that libc initialization is skipped for this so the set of functions + * that can be called is rather limited + */ +extern void _libfrr_version(void) + __attribute__((visibility("hidden"), noreturn)); +void _libfrr_version(void) +{ + const char banner[] = + FRR_FULL_NAME " " FRR_VERSION ".\n" + FRR_COPYRIGHT GIT_INFO "\n" + "configured with:\n " FRR_CONFIG_ARGS "\n"; + write(1, banner, sizeof(banner) - 1); + _exit(0); +} |