/*
- Monitor status of frr daemons and restart if necessary.
-
- Copyright (C) 2004 Andrew J. Schorr
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Monitor status of frr daemons and restart if necessary.
+ *
+ * Copyright (C) 2004 Andrew J. Schorr
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <zebra.h>
#include <lib/version.h>
#include "command.h"
#include "memory_vty.h"
+#include "libfrr.h"
+#include "lib_errors.h"
#include <getopt.h>
#include <sys/un.h>
#include <systemd.h>
#include "watchfrr.h"
+#include "watchfrr_errors.h"
#ifndef MIN
#define MIN(X,Y) (((X) <= (Y)) ? (X) : (Y))
#define FUZZY(X) ((X)+JITTER((X)/20))
#define DEFAULT_PERIOD 5
-#define DEFAULT_TIMEOUT 10
+#define DEFAULT_TIMEOUT 90
#define DEFAULT_RESTART_TIMEOUT 20
#define DEFAULT_LOGLEVEL LOG_INFO
#define DEFAULT_MIN_RESTART 60
#define DEFAULT_MAX_RESTART 600
-#ifdef PATH_WATCHFRR_PID
-#define DEFAULT_PIDFILE PATH_WATCHFRR_PID
-#else
-#define DEFAULT_PIDFILE STATEDIR "/watchfrr.pid"
-#endif
-#ifdef DAEMON_VTY_DIR
-#define VTYDIR DAEMON_VTY_DIR
-#else
-#define VTYDIR STATEDIR
-#endif
#define PING_TOKEN "PING"
/* Needs to be global, referenced somewhere inside libfrr. */
struct thread_master *master;
+static char pidfile_default[256];
-typedef enum
-{
- MODE_MONITOR = 0,
- MODE_GLOBAL_RESTART,
- MODE_SEPARATE_RESTART,
- MODE_PHASED_ZEBRA_RESTART,
- MODE_PHASED_ALL_RESTART
-} watch_mode_t;
-
-static const char *mode_str[] =
-{
- "monitor",
- "global restart",
- "individual daemon restart",
- "phased zebra restart",
- "phased global restart for any failure",
-};
+static bool watch_only = false;
-typedef enum
-{
- PHASE_NONE = 0,
- PHASE_STOPS_PENDING,
- PHASE_WAITING_DOWN,
- PHASE_ZEBRA_RESTART_PENDING,
- PHASE_WAITING_ZEBRA_UP
+typedef enum {
+ PHASE_NONE = 0,
+ PHASE_STOPS_PENDING,
+ PHASE_WAITING_DOWN,
+ PHASE_ZEBRA_RESTART_PENDING,
+ PHASE_WAITING_ZEBRA_UP
} restart_phase_t;
-static const char *phase_str[] =
-{
- "None",
- "Stop jobs running",
- "Waiting for other daemons to come down",
- "Zebra restart job running",
- "Waiting for zebra to come up",
- "Start jobs running",
+static const char *phase_str[] = {
+ "None",
+ "Stop jobs running",
+ "Waiting for other daemons to come down",
+ "Zebra restart job running",
+ "Waiting for zebra to come up",
+ "Start jobs running",
};
#define PHASE_TIMEOUT (3*gs.restart_timeout)
-struct restart_info
-{
- const char *name;
- const char *what;
- pid_t pid;
- struct timeval time;
- long interval;
- struct thread *t_kill;
- int kills;
+struct restart_info {
+ const char *name;
+ const char *what;
+ pid_t pid;
+ struct timeval time;
+ long interval;
+ struct thread *t_kill;
+ int kills;
};
-static struct global_state
-{
- watch_mode_t mode;
- restart_phase_t phase;
- struct thread *t_phase_hanging;
- const char *vtydir;
- long period;
- long timeout;
- long restart_timeout;
- long min_restart_interval;
- long max_restart_interval;
- int do_ping;
- struct daemon *daemons;
- const char *restart_command;
- const char *start_command;
- const char *stop_command;
- struct restart_info restart;
- int unresponsive_restart;
- int loglevel;
- struct daemon *special; /* points to zebra when doing phased restart */
- int numdaemons;
- int numpids;
- int numdown; /* # of daemons that are not UP or UNRESPONSIVE */
+static struct global_state {
+ restart_phase_t phase;
+ struct thread *t_phase_hanging;
+ const char *vtydir;
+ long period;
+ long timeout;
+ long restart_timeout;
+ long min_restart_interval;
+ long max_restart_interval;
+ struct daemon *daemons;
+ const char *restart_command;
+ const char *start_command;
+ const char *stop_command;
+ struct restart_info restart;
+ int loglevel;
+ struct daemon *special; /* points to zebra when doing phased restart */
+ int numdaemons;
+ int numpids;
+ int numdown; /* # of daemons that are not UP or UNRESPONSIVE */
} gs = {
- .mode = MODE_MONITOR,
- .phase = PHASE_NONE,
- .vtydir = VTYDIR,
- .period = 1000*DEFAULT_PERIOD,
- .timeout = DEFAULT_TIMEOUT,
- .restart_timeout = DEFAULT_RESTART_TIMEOUT,
- .loglevel = DEFAULT_LOGLEVEL,
- .min_restart_interval = DEFAULT_MIN_RESTART,
- .max_restart_interval = DEFAULT_MAX_RESTART,
- .do_ping = 1,
+ .phase = PHASE_NONE,
+ .vtydir = frr_vtydir,
+ .period = 1000 * DEFAULT_PERIOD,
+ .timeout = DEFAULT_TIMEOUT,
+ .restart_timeout = DEFAULT_RESTART_TIMEOUT,
+ .loglevel = DEFAULT_LOGLEVEL,
+ .min_restart_interval = DEFAULT_MIN_RESTART,
+ .max_restart_interval = DEFAULT_MAX_RESTART,
};
-typedef enum
-{
- DAEMON_INIT,
- DAEMON_DOWN,
- DAEMON_CONNECTING,
- DAEMON_UP,
- DAEMON_UNRESPONSIVE
+typedef enum {
+ DAEMON_INIT,
+ DAEMON_DOWN,
+ DAEMON_CONNECTING,
+ DAEMON_UP,
+ DAEMON_UNRESPONSIVE
} daemon_state_t;
-#define IS_UP(DMN) \
- (((DMN)->state == DAEMON_UP) || ((DMN)->state == DAEMON_UNRESPONSIVE))
+#define IS_UP(DMN) \
+ (((DMN)->state == DAEMON_UP) || ((DMN)->state == DAEMON_UNRESPONSIVE))
-static const char *state_str[] =
-{
- "Init",
- "Down",
- "Connecting",
- "Up",
- "Unresponsive",
+static const char *state_str[] = {
+ "Init", "Down", "Connecting", "Up", "Unresponsive",
};
struct daemon {
- const char *name;
- daemon_state_t state;
- int fd;
- struct timeval echo_sent;
- u_int connect_tries;
- struct thread *t_wakeup;
- struct thread *t_read;
- struct thread *t_write;
- struct daemon *next;
- struct restart_info restart;
+ const char *name;
+ daemon_state_t state;
+ int fd;
+ struct timeval echo_sent;
+ unsigned int connect_tries;
+ struct thread *t_wakeup;
+ struct thread *t_read;
+ struct thread *t_write;
+ struct daemon *next;
+ struct restart_info restart;
};
-static const struct option longopts[] =
-{
- { "daemon", no_argument, NULL, 'd'},
- { "statedir", required_argument, NULL, 'S'},
- { "no-echo", no_argument, NULL, 'e'},
- { "loglevel", required_argument, NULL, 'l'},
- { "interval", required_argument, NULL, 'i'},
- { "timeout", required_argument, NULL, 't'},
- { "restart-timeout", required_argument, NULL, 'T'},
- { "restart", required_argument, NULL, 'r'},
- { "start-command", required_argument, NULL, 's'},
- { "kill-command", required_argument, NULL, 'k'},
- { "restart-all", required_argument, NULL, 'R'},
- { "all-restart", no_argument, NULL, 'a'},
- { "always-all-restart", no_argument, NULL, 'A'},
- { "unresponsive-restart", no_argument, NULL, 'z'},
- { "min-restart-interval", required_argument, NULL, 'm'},
- { "max-restart-interval", required_argument, NULL, 'M'},
- { "pid-file", required_argument, NULL, 'p'},
- { "blank-string", required_argument, NULL, 'b'},
- { "help", no_argument, NULL, 'h'},
- { "version", no_argument, NULL, 'v'},
- { NULL, 0, NULL, 0 }
-};
+#define OPTION_MINRESTART 2000
+#define OPTION_MAXRESTART 2001
+#define OPTION_DRY 2002
+
+static const struct option longopts[] = {
+ {"daemon", no_argument, NULL, 'd'},
+ {"statedir", required_argument, NULL, 'S'},
+ {"loglevel", required_argument, NULL, 'l'},
+ {"interval", required_argument, NULL, 'i'},
+ {"timeout", required_argument, NULL, 't'},
+ {"restart-timeout", required_argument, NULL, 'T'},
+ {"restart", required_argument, NULL, 'r'},
+ {"start-command", required_argument, NULL, 's'},
+ {"kill-command", required_argument, NULL, 'k'},
+ {"dry", no_argument, NULL, OPTION_DRY},
+ {"min-restart-interval", required_argument, NULL, OPTION_MINRESTART},
+ {"max-restart-interval", required_argument, NULL, OPTION_MAXRESTART},
+ {"pid-file", required_argument, NULL, 'p'},
+ {"blank-string", required_argument, NULL, 'b'},
+ {"help", no_argument, NULL, 'h'},
+ {"version", no_argument, NULL, 'v'},
+ {NULL, 0, NULL, 0}};
static int try_connect(struct daemon *dmn);
static int wakeup_send_echo(struct thread *t_wakeup);
static void try_restart(struct daemon *dmn);
static void phase_check(void);
-static int
-usage(const char *progname, int status)
+static const char *progname;
+static void printhelp(FILE *target)
{
- if (status != 0)
- fprintf(stderr, "Try `%s --help' for more information.\n", progname);
- else
- {
- printf("Usage : %s [OPTION...] <daemon name> ...\n\n\
+ fprintf(target,
+ "Usage : %s [OPTION...] <daemon name> ...\n\n\
Watchdog program to monitor status of frr daemons and try to restart\n\
them if they are down or unresponsive. It determines whether a daemon is\n\
up based on whether it can connect to the daemon's vty unix stream socket.\n\
the daemon is responsive. If the daemon crashes, we will receive an EOF\n\
on the socket connection and know immediately that the daemon is down.\n\n\
The daemons to be monitored should be listed on the command line.\n\n\
-This program can run in one of 5 modes:\n\n\
-0. Mode: %s.\n\
- Just monitor and report on status changes. Example:\n\
- %s -d zebra ospfd bgpd\n\n\
-1. Mode: %s.\n\
- Whenever any daemon hangs or crashes, use the given command to restart\n\
- them all. Example:\n\
- %s -dz \\\n\
- -R '/sbin/service zebra restart; /sbin/service ospfd restart' \\\n\
- zebra ospfd\n\n\
-2. Mode: %s.\n\
- When any single daemon hangs or crashes, restart only the daemon that's\n\
- in trouble using the supplied restart command. Example:\n\
- %s -dz -r '/sbin/service %%s restart' zebra ospfd bgpd\n\n\
-3. Mode: %s.\n\
- The same as the previous mode, except that there is special treatment when\n\
- the zebra daemon is in trouble. In that case, a phased restart approach\n\
- is used: 1. stop all other daemons; 2. restart zebra; 3. start the other\n\
- daemons. Example:\n\
- %s -adz -r '/sbin/service %%s restart' \\\n\
- -s '/sbin/service %%s start' \\\n\
- -k '/sbin/service %%s stop' zebra ospfd bgpd\n\n\
-4. Mode: %s.\n\
- This is the same as the previous mode, except that the phased restart\n\
- procedure is used whenever any of the daemons hangs or crashes. Example:\n\
- %s -Adz -r '/sbin/service %%s restart' \\\n\
- -s '/sbin/service %%s start' \\\n\
- -k '/sbin/service %%s stop' zebra ospfd bgpd\n\n\
-As of this writing, it is believed that mode 2 [%s]\n\
-is not safe, and mode 3 [%s] may not be safe with some of the\n\
-routing daemons.\n\n\
In order to avoid attempting to restart the daemons in a fast loop,\n\
the -m and -M options allow you to control the minimum delay between\n\
restart commands. The minimum restart delay is recalculated each time\n\
a restart is attempted: if the time since the last restart attempt exceeds\n\
twice the -M value, then the restart delay is set to the -m value.\n\
Otherwise, the interval is doubled (but capped at the -M value).\n\n",
- progname,mode_str[0],progname,mode_str[1],progname,mode_str[2],
- progname,mode_str[3],progname,mode_str[4],progname,mode_str[2],
- mode_str[3]);
+ progname);
- printf("Options:\n\
+ fprintf(target,
+ "Options:\n\
-d, --daemon Run in daemon mode. In this mode, error messages are sent\n\
to syslog instead of stdout.\n\
-S, --statedir Set the vty socket directory (default is %s)\n\
--e, --no-echo Do not ping the daemons to test responsiveness (this\n\
- option is necessary if the daemons do not support the\n\
- echo command)\n\
-l, --loglevel Set the logging level (default is %d).\n\
The value should range from %d (LOG_EMERG) to %d (LOG_DEBUG),\n\
but it can be set higher than %d if extra-verbose debugging\n\
messages are desired.\n\
--m, --min-restart-interval\n\
+ --min-restart-interval\n\
Set the minimum seconds to wait between invocations of daemon\n\
restart commands (default is %d).\n\
--M, --max-restart-interval\n\
+ --max-restart-interval\n\
Set the maximum seconds to wait between invocations of daemon\n\
restart commands (default is %d).\n\
-i, --interval Set the status polling interval in seconds (default is %d)\n\
-r, --restart Supply a Bourne shell command to use to restart a single\n\
daemon. The command string should include '%%s' where the\n\
name of the daemon should be substituted.\n\
- Note that -r and -R are incompatible.\n\
-s, --start-command\n\
Supply a Bourne shell to command to use to start a single\n\
daemon. The command string should include '%%s' where the\n\
Supply a Bourne shell to command to use to stop a single\n\
daemon. The command string should include '%%s' where the\n\
name of the daemon should be substituted.\n\
--R, --restart-all\n\
- When one or more daemons is down, try to restart everything\n\
- using the Bourne shell command supplied as the argument.\n\
- Note that -r and -R are incompatible.\n\
--z, --unresponsive-restart\n\
- When a daemon is unresponsive, treat it as being down for\n\
- restart purposes.\n\
--a, --all-restart\n\
- When zebra hangs or crashes, restart all daemons using\n\
- this phased approach: 1. stop all other daemons; 2. restart\n\
- zebra; 3. start other daemons. Requires -r, -s, and -k.\n\
--A, --always-all-restart\n\
- When any daemon (not just zebra) hangs or crashes, use the\n\
- same phased restart mechanism described above for -a.\n\
- Requires -r, -s, and -k.\n\
+ --dry Do not start or restart anything, just log.\n\
-p, --pid-file Set process identifier file name\n\
(default is %s).\n\
-b, --blank-string\n\
When the supplied argument string is found in any of the\n\
- various shell command arguments (-r, -s, -k, or -R), replace\n\
+ various shell command arguments (-r, -s, or -k), replace\n\
it with a space. This is an ugly hack to circumvent problems\n\
passing command-line arguments with embedded spaces.\n\
-v, --version Print program version\n\
-h, --help Display this help and exit\n",
- VTYDIR,DEFAULT_LOGLEVEL,LOG_EMERG,LOG_DEBUG,LOG_DEBUG,
- DEFAULT_MIN_RESTART,DEFAULT_MAX_RESTART,
- DEFAULT_PERIOD,DEFAULT_TIMEOUT,DEFAULT_RESTART_TIMEOUT,
- DEFAULT_PIDFILE);
- }
-
- return status;
+ frr_vtydir, DEFAULT_LOGLEVEL, LOG_EMERG, LOG_DEBUG, LOG_DEBUG,
+ DEFAULT_MIN_RESTART, DEFAULT_MAX_RESTART, DEFAULT_PERIOD,
+ DEFAULT_TIMEOUT, DEFAULT_RESTART_TIMEOUT, pidfile_default);
}
-static pid_t
-run_background(char *shell_cmd)
+static pid_t run_background(char *shell_cmd)
{
- pid_t child;
-
- switch (child = fork())
- {
- case -1:
- zlog_err("fork failed, cannot run command [%s]: %s",
- shell_cmd,safe_strerror(errno));
- return -1;
- case 0:
- /* Child process. */
- /* Use separate process group so child processes can be killed easily. */
- if (setpgid(0,0) < 0)
- zlog_warn("warning: setpgid(0,0) failed: %s",safe_strerror(errno));
- {
- char shell[] = "sh";
- char dashc[] = "-c";
- char * const argv[4] = { shell, dashc, shell_cmd, NULL};
- execv("/bin/sh", argv);
- zlog_err("execv(/bin/sh -c '%s') failed: %s",
- shell_cmd,safe_strerror(errno));
- _exit(127);
- }
- default:
- /* Parent process: we will reap the child later. */
- zlog_err("Forked background command [pid %d]: %s",(int)child,shell_cmd);
- return child;
- }
+ pid_t child;
+
+ switch (child = fork()) {
+ case -1:
+ flog_err_sys(LIB_ERR_SYSTEM_CALL,
+ "fork failed, cannot run command [%s]: %s",
+ shell_cmd, safe_strerror(errno));
+ return -1;
+ case 0:
+ /* Child process. */
+ /* Use separate process group so child processes can be killed
+ * easily. */
+ if (setpgid(0, 0) < 0)
+ zlog_warn("warning: setpgid(0,0) failed: %s",
+ safe_strerror(errno));
+ {
+ char shell[] = "sh";
+ char dashc[] = "-c";
+ char *const argv[4] = {shell, dashc, shell_cmd, NULL};
+ execv("/bin/sh", argv);
+ flog_err_sys(LIB_ERR_SYSTEM_CALL,
+ "execv(/bin/sh -c '%s') failed: %s",
+ shell_cmd, safe_strerror(errno));
+ _exit(127);
+ }
+ default:
+ /* Parent process: we will reap the child later. */
+ flog_err_sys(LIB_ERR_SYSTEM_CALL,
+ "Forked background command [pid %d]: %s",
+ (int)child, shell_cmd);
+ return child;
+ }
}
-static struct timeval *
-time_elapsed(struct timeval *result, const struct timeval *start_time)
+static struct timeval *time_elapsed(struct timeval *result,
+ const struct timeval *start_time)
{
- gettimeofday(result,NULL);
- result->tv_sec -= start_time->tv_sec;
- result->tv_usec -= start_time->tv_usec;
- while (result->tv_usec < 0)
- {
- result->tv_usec += 1000000L;
- result->tv_sec--;
- }
- return result;
+ gettimeofday(result, NULL);
+ result->tv_sec -= start_time->tv_sec;
+ result->tv_usec -= start_time->tv_usec;
+ while (result->tv_usec < 0) {
+ result->tv_usec += 1000000L;
+ result->tv_sec--;
+ }
+ return result;
}
-static int
-restart_kill(struct thread *t_kill)
+static int restart_kill(struct thread *t_kill)
{
- struct restart_info *restart = THREAD_ARG(t_kill);
- struct timeval delay;
-
- time_elapsed(&delay,&restart->time);
- zlog_warn("Warning: %s %s child process %d still running after "
- "%ld seconds, sending signal %d",
- restart->what,restart->name,(int)restart->pid, (long)delay.tv_sec,
- (restart->kills ? SIGKILL : SIGTERM));
- kill(-restart->pid,(restart->kills ? SIGKILL : SIGTERM));
- restart->kills++;
- restart->t_kill = thread_add_timer(master,restart_kill,restart,
- gs.restart_timeout);
- return 0;
+ struct restart_info *restart = THREAD_ARG(t_kill);
+ struct timeval delay;
+
+ time_elapsed(&delay, &restart->time);
+ zlog_warn(
+ "Warning: %s %s child process %d still running after "
+ "%ld seconds, sending signal %d",
+ restart->what, restart->name, (int)restart->pid,
+ (long)delay.tv_sec, (restart->kills ? SIGKILL : SIGTERM));
+ kill(-restart->pid, (restart->kills ? SIGKILL : SIGTERM));
+ restart->kills++;
+ restart->t_kill = NULL;
+ thread_add_timer(master, restart_kill, restart, gs.restart_timeout,
+ &restart->t_kill);
+ return 0;
}
-static struct restart_info *
-find_child(pid_t child)
+static struct restart_info *find_child(pid_t child)
{
- if (gs.mode == MODE_GLOBAL_RESTART)
- {
- if (gs.restart.pid == child)
- return &gs.restart;
- }
- else
- {
- struct daemon *dmn;
- for (dmn = gs.daemons; dmn; dmn = dmn->next)
- {
- if (dmn->restart.pid == child)
- return &dmn->restart;
- }
- }
- return NULL;
+ struct daemon *dmn;
+ for (dmn = gs.daemons; dmn; dmn = dmn->next) {
+ if (dmn->restart.pid == child)
+ return &dmn->restart;
+ }
+ return NULL;
}
-static void
-sigchild(void)
+static void sigchild(void)
{
- pid_t child;
- int status;
- const char *name;
- const char *what;
- struct restart_info *restart;
-
- switch (child = waitpid(-1,&status,WNOHANG))
- {
- case -1:
- zlog_err("waitpid failed: %s",safe_strerror(errno));
- return;
- case 0:
- zlog_warn("SIGCHLD received, but waitpid did not reap a child");
- return;
- }
-
- if (child == integrated_write_pid)
- {
- integrated_write_sigchld(status);
- return;
- }
-
- if ((restart = find_child(child)) != NULL)
- {
- name = restart->name;
- what = restart->what;
- restart->pid = 0;
- gs.numpids--;
- thread_cancel(restart->t_kill);
- restart->t_kill = NULL;
- /* Update restart time to reflect the time the command completed. */
- gettimeofday(&restart->time,NULL);
- }
- else
- {
- zlog_err("waitpid returned status for an unknown child process %d",
- (int)child);
- name = "(unknown)";
- what = "background";
- }
- if (WIFSTOPPED(status))
- zlog_warn("warning: %s %s process %d is stopped",
- what,name,(int)child);
- else if (WIFSIGNALED(status))
- zlog_warn("%s %s process %d terminated due to signal %d",
- what,name,(int)child,WTERMSIG(status));
- else if (WIFEXITED(status))
- {
- if (WEXITSTATUS(status) != 0)
- zlog_warn("%s %s process %d exited with non-zero status %d",
- what,name,(int)child,WEXITSTATUS(status));
- else
- zlog_debug("%s %s process %d exited normally",what,name,(int)child);
- }
- else
- zlog_err("cannot interpret %s %s process %d wait status 0x%x",
- what,name,(int)child,status);
- phase_check();
+ pid_t child;
+ int status;
+ const char *name;
+ const char *what;
+ struct restart_info *restart;
+
+ switch (child = waitpid(-1, &status, WNOHANG)) {
+ case -1:
+ flog_err_sys(LIB_ERR_SYSTEM_CALL, "waitpid failed: %s",
+ safe_strerror(errno));
+ return;
+ case 0:
+ zlog_warn("SIGCHLD received, but waitpid did not reap a child");
+ return;
+ }
+
+ if (child == integrated_write_pid) {
+ integrated_write_sigchld(status);
+ return;
+ }
+
+ if ((restart = find_child(child)) != NULL) {
+ name = restart->name;
+ what = restart->what;
+ restart->pid = 0;
+ gs.numpids--;
+ thread_cancel(restart->t_kill);
+ restart->t_kill = NULL;
+ /* Update restart time to reflect the time the command
+ * completed. */
+ gettimeofday(&restart->time, NULL);
+ } else {
+ flog_err_sys(
+ LIB_ERR_SYSTEM_CALL,
+ "waitpid returned status for an unknown child process %d",
+ (int)child);
+ name = "(unknown)";
+ what = "background";
+ }
+ if (WIFSTOPPED(status))
+ zlog_warn("warning: %s %s process %d is stopped", what, name,
+ (int)child);
+ else if (WIFSIGNALED(status))
+ zlog_warn("%s %s process %d terminated due to signal %d", what,
+ name, (int)child, WTERMSIG(status));
+ else if (WIFEXITED(status)) {
+ if (WEXITSTATUS(status) != 0)
+ zlog_warn(
+ "%s %s process %d exited with non-zero status %d",
+ what, name, (int)child, WEXITSTATUS(status));
+ else
+ zlog_debug("%s %s process %d exited normally", what,
+ name, (int)child);
+ } else
+ flog_err_sys(
+ LIB_ERR_SYSTEM_CALL,
+ "cannot interpret %s %s process %d wait status 0x%x",
+ what, name, (int)child, status);
+ phase_check();
}
-static int
-run_job(struct restart_info *restart, const char *cmdtype, const char *command,
- int force, int update_interval)
+static int run_job(struct restart_info *restart, const char *cmdtype,
+ const char *command, int force, int update_interval)
{
- struct timeval delay;
-
- if (gs.loglevel > LOG_DEBUG+1)
- zlog_debug("attempting to %s %s",cmdtype,restart->name);
-
- if (restart->pid)
- {
- if (gs.loglevel > LOG_DEBUG+1)
- zlog_debug("cannot %s %s, previous pid %d still running",
- cmdtype,restart->name,(int)restart->pid);
- return -1;
- }
-
- /* Note: time_elapsed test must come before the force test, since we need
- to make sure that delay is initialized for use below in updating the
- restart interval. */
- if ((time_elapsed(&delay,&restart->time)->tv_sec < restart->interval) &&
- !force)
- {
- if (gs.loglevel > LOG_DEBUG+1)
- zlog_debug("postponing %s %s: "
- "elapsed time %ld < retry interval %ld",
- cmdtype,restart->name,(long)delay.tv_sec,restart->interval);
- return -1;
- }
-
- gettimeofday(&restart->time,NULL);
- restart->kills = 0;
- {
- char cmd[strlen(command)+strlen(restart->name)+1];
- snprintf(cmd,sizeof(cmd),command,restart->name);
- if ((restart->pid = run_background(cmd)) > 0)
- {
- restart->t_kill = thread_add_timer(master,restart_kill,restart,
- gs.restart_timeout);
- restart->what = cmdtype;
- gs.numpids++;
- }
- else
- restart->pid = 0;
- }
-
- /* Calculate the new restart interval. */
- if (update_interval)
- {
- if (delay.tv_sec > 2*gs.max_restart_interval)
- restart->interval = gs.min_restart_interval;
- else if ((restart->interval *= 2) > gs.max_restart_interval)
- restart->interval = gs.max_restart_interval;
- if (gs.loglevel > LOG_DEBUG+1)
- zlog_debug("restart %s interval is now %ld",
- restart->name,restart->interval);
- }
- return restart->pid;
-}
+ struct timeval delay;
-#define SET_READ_HANDLER(DMN) \
- (DMN)->t_read = thread_add_read(master,handle_read,(DMN),(DMN)->fd)
+ if (gs.loglevel > LOG_DEBUG + 1)
+ zlog_debug("attempting to %s %s", cmdtype, restart->name);
-#define SET_WAKEUP_DOWN(DMN) \
- (DMN)->t_wakeup = thread_add_timer_msec(master,wakeup_down,(DMN), \
- FUZZY(gs.period))
+ if (restart->pid) {
+ if (gs.loglevel > LOG_DEBUG + 1)
+ zlog_debug(
+ "cannot %s %s, previous pid %d still running",
+ cmdtype, restart->name, (int)restart->pid);
+ return -1;
+ }
-#define SET_WAKEUP_UNRESPONSIVE(DMN) \
- (DMN)->t_wakeup = thread_add_timer_msec(master,wakeup_unresponsive,(DMN), \
- FUZZY(gs.period))
+ /* Note: time_elapsed test must come before the force test, since we
+ need
+ to make sure that delay is initialized for use below in updating the
+ restart interval. */
+ if ((time_elapsed(&delay, &restart->time)->tv_sec < restart->interval)
+ && !force) {
+ if (gs.loglevel > LOG_DEBUG + 1)
+ zlog_debug(
+ "postponing %s %s: "
+ "elapsed time %ld < retry interval %ld",
+ cmdtype, restart->name, (long)delay.tv_sec,
+ restart->interval);
+ return -1;
+ }
-#define SET_WAKEUP_ECHO(DMN) \
- (DMN)->t_wakeup = thread_add_timer_msec(master,wakeup_send_echo,(DMN), \
- FUZZY(gs.period))
+ gettimeofday(&restart->time, NULL);
+ restart->kills = 0;
+ {
+ char cmd[strlen(command) + strlen(restart->name) + 1];
+ snprintf(cmd, sizeof(cmd), command, restart->name);
+ if ((restart->pid = run_background(cmd)) > 0) {
+ restart->t_kill = NULL;
+ thread_add_timer(master, restart_kill, restart,
+ gs.restart_timeout, &restart->t_kill);
+ restart->what = cmdtype;
+ gs.numpids++;
+ } else
+ restart->pid = 0;
+ }
-static int
-wakeup_down(struct thread *t_wakeup)
+ /* Calculate the new restart interval. */
+ if (update_interval) {
+ if (delay.tv_sec > 2 * gs.max_restart_interval)
+ restart->interval = gs.min_restart_interval;
+ else if ((restart->interval *= 2) > gs.max_restart_interval)
+ restart->interval = gs.max_restart_interval;
+ if (gs.loglevel > LOG_DEBUG + 1)
+ zlog_debug("restart %s interval is now %ld",
+ restart->name, restart->interval);
+ }
+ return restart->pid;
+}
+
+#define SET_READ_HANDLER(DMN) \
+ do { \
+ (DMN)->t_read = NULL; \
+ thread_add_read(master, handle_read, (DMN), (DMN)->fd, \
+ &(DMN)->t_read); \
+ } while (0);
+
+#define SET_WAKEUP_DOWN(DMN) \
+ do { \
+ (DMN)->t_wakeup = NULL; \
+ thread_add_timer_msec(master, wakeup_down, (DMN), \
+ FUZZY(gs.period), &(DMN)->t_wakeup); \
+ } while (0);
+
+#define SET_WAKEUP_UNRESPONSIVE(DMN) \
+ do { \
+ (DMN)->t_wakeup = NULL; \
+ thread_add_timer_msec(master, wakeup_unresponsive, (DMN), \
+ FUZZY(gs.period), &(DMN)->t_wakeup); \
+ } while (0);
+
+#define SET_WAKEUP_ECHO(DMN) \
+ do { \
+ (DMN)->t_wakeup = NULL; \
+ thread_add_timer_msec(master, wakeup_send_echo, (DMN), \
+ FUZZY(gs.period), &(DMN)->t_wakeup); \
+ } while (0);
+
+static int wakeup_down(struct thread *t_wakeup)
{
- struct daemon *dmn = THREAD_ARG(t_wakeup);
-
- dmn->t_wakeup = NULL;
- if (try_connect(dmn) < 0)
- SET_WAKEUP_DOWN(dmn);
- if ((dmn->connect_tries > 1) && (dmn->state != DAEMON_UP))
- try_restart(dmn);
- return 0;
+ struct daemon *dmn = THREAD_ARG(t_wakeup);
+
+ dmn->t_wakeup = NULL;
+ if (try_connect(dmn) < 0)
+ SET_WAKEUP_DOWN(dmn);
+ if ((dmn->connect_tries > 1) && (dmn->state != DAEMON_UP))
+ try_restart(dmn);
+ return 0;
}
-static int
-wakeup_init(struct thread *t_wakeup)
+static int wakeup_init(struct thread *t_wakeup)
{
- struct daemon *dmn = THREAD_ARG(t_wakeup);
-
- dmn->t_wakeup = NULL;
- if (try_connect(dmn) < 0)
- {
- SET_WAKEUP_DOWN(dmn);
- zlog_err("%s state -> down : initial connection attempt failed",
- dmn->name);
- dmn->state = DAEMON_DOWN;
- }
- return 0;
+ struct daemon *dmn = THREAD_ARG(t_wakeup);
+
+ dmn->t_wakeup = NULL;
+ if (try_connect(dmn) < 0) {
+ SET_WAKEUP_DOWN(dmn);
+ flog_err(WATCHFRR_ERR_CONNECTION,
+ "%s state -> down : initial connection attempt failed",
+ dmn->name);
+ dmn->state = DAEMON_DOWN;
+ }
+ return 0;
}
-static void
-daemon_down(struct daemon *dmn, const char *why)
+static void daemon_down(struct daemon *dmn, const char *why)
{
- if (IS_UP(dmn) || (dmn->state == DAEMON_INIT))
- zlog_err("%s state -> down : %s",dmn->name,why);
- else if (gs.loglevel > LOG_DEBUG)
- zlog_debug("%s still down : %s",dmn->name,why);
- if (IS_UP(dmn))
- gs.numdown++;
- dmn->state = DAEMON_DOWN;
- if (dmn->fd >= 0)
- {
- close(dmn->fd);
- dmn->fd = -1;
- }
- THREAD_OFF(dmn->t_read);
- THREAD_OFF(dmn->t_write);
- THREAD_OFF(dmn->t_wakeup);
- if (try_connect(dmn) < 0)
- SET_WAKEUP_DOWN(dmn);
- phase_check();
+ if (IS_UP(dmn) || (dmn->state == DAEMON_INIT))
+ flog_err(WATCHFRR_ERR_CONNECTION,
+ "%s state -> down : %s", dmn->name, why);
+ else if (gs.loglevel > LOG_DEBUG)
+ zlog_debug("%s still down : %s", dmn->name, why);
+ if (IS_UP(dmn))
+ gs.numdown++;
+ dmn->state = DAEMON_DOWN;
+ if (dmn->fd >= 0) {
+ close(dmn->fd);
+ dmn->fd = -1;
+ }
+ THREAD_OFF(dmn->t_read);
+ THREAD_OFF(dmn->t_write);
+ THREAD_OFF(dmn->t_wakeup);
+ if (try_connect(dmn) < 0)
+ SET_WAKEUP_DOWN(dmn);
+ phase_check();
}
-static int
-handle_read(struct thread *t_read)
+static int handle_read(struct thread *t_read)
{
- struct daemon *dmn = THREAD_ARG(t_read);
- static const char resp[sizeof(PING_TOKEN)+4] = PING_TOKEN "\n";
- char buf[sizeof(resp)+100];
- ssize_t rc;
- struct timeval delay;
-
- dmn->t_read = NULL;
- if ((rc = read(dmn->fd,buf,sizeof(buf))) < 0)
- {
- char why[100];
-
- if (ERRNO_IO_RETRY(errno))
- {
- /* Pretend it never happened. */
- SET_READ_HANDLER(dmn);
- return 0;
+ struct daemon *dmn = THREAD_ARG(t_read);
+ static const char resp[sizeof(PING_TOKEN) + 4] = PING_TOKEN "\n";
+ char buf[sizeof(resp) + 100];
+ ssize_t rc;
+ struct timeval delay;
+
+ dmn->t_read = NULL;
+ if ((rc = read(dmn->fd, buf, sizeof(buf))) < 0) {
+ char why[100];
+
+ if (ERRNO_IO_RETRY(errno)) {
+ /* Pretend it never happened. */
+ SET_READ_HANDLER(dmn);
+ return 0;
+ }
+ snprintf(why, sizeof(why), "unexpected read error: %s",
+ safe_strerror(errno));
+ daemon_down(dmn, why);
+ return 0;
}
- snprintf(why,sizeof(why),"unexpected read error: %s",
- safe_strerror(errno));
- daemon_down(dmn,why);
- return 0;
- }
- if (rc == 0)
- {
- daemon_down(dmn,"read returned EOF");
- return 0;
- }
- if (!dmn->echo_sent.tv_sec)
- {
- char why[sizeof(buf)+100];
- snprintf(why,sizeof(why),"unexpected read returns %d bytes: %.*s",
- (int)rc,(int)rc,buf);
- daemon_down(dmn,why);
- return 0;
- }
-
- /* We are expecting an echo response: is there any chance that the
- response would not be returned entirely in the first read? That
- seems inconceivable... */
- if ((rc != sizeof(resp)) || memcmp(buf,resp,sizeof(resp)))
- {
- char why[100+sizeof(buf)];
- snprintf(why,sizeof(why),"read returned bad echo response of %d bytes "
- "(expecting %u): %.*s",
- (int)rc,(u_int)sizeof(resp),(int)rc,buf);
- daemon_down(dmn,why);
- return 0;
- }
-
- time_elapsed(&delay,&dmn->echo_sent);
- dmn->echo_sent.tv_sec = 0;
- if (dmn->state == DAEMON_UNRESPONSIVE)
- {
- if (delay.tv_sec < gs.timeout)
- {
- dmn->state = DAEMON_UP;
- zlog_warn("%s state -> up : echo response received after %ld.%06ld "
- "seconds", dmn->name,
- (long)delay.tv_sec, (long)delay.tv_usec);
+ if (rc == 0) {
+ daemon_down(dmn, "read returned EOF");
+ return 0;
+ }
+ if (!dmn->echo_sent.tv_sec) {
+ char why[sizeof(buf) + 100];
+ snprintf(why, sizeof(why),
+ "unexpected read returns %d bytes: %.*s", (int)rc,
+ (int)rc, buf);
+ daemon_down(dmn, why);
+ return 0;
}
- else
- zlog_warn("%s: slow echo response finally received after %ld.%06ld "
- "seconds", dmn->name,
- (long)delay.tv_sec, (long)delay.tv_usec);
- }
- else if (gs.loglevel > LOG_DEBUG+1)
- zlog_debug("%s: echo response received after %ld.%06ld seconds",
- dmn->name, (long)delay.tv_sec, (long)delay.tv_usec);
-
- SET_READ_HANDLER(dmn);
- if (dmn->t_wakeup)
- thread_cancel(dmn->t_wakeup);
- SET_WAKEUP_ECHO(dmn);
-
- return 0;
+
+ /* We are expecting an echo response: is there any chance that the
+ response would not be returned entirely in the first read? That
+ seems inconceivable... */
+ if ((rc != sizeof(resp)) || memcmp(buf, resp, sizeof(resp))) {
+ char why[100 + sizeof(buf)];
+ snprintf(why, sizeof(why),
+ "read returned bad echo response of %d bytes "
+ "(expecting %u): %.*s",
+ (int)rc, (unsigned int)sizeof(resp), (int)rc, buf);
+ daemon_down(dmn, why);
+ return 0;
+ }
+
+ time_elapsed(&delay, &dmn->echo_sent);
+ dmn->echo_sent.tv_sec = 0;
+ if (dmn->state == DAEMON_UNRESPONSIVE) {
+ if (delay.tv_sec < gs.timeout) {
+ dmn->state = DAEMON_UP;
+ zlog_warn(
+ "%s state -> up : echo response received after %ld.%06ld "
+ "seconds",
+ dmn->name, (long)delay.tv_sec,
+ (long)delay.tv_usec);
+ } else
+ zlog_warn(
+ "%s: slow echo response finally received after %ld.%06ld "
+ "seconds",
+ dmn->name, (long)delay.tv_sec,
+ (long)delay.tv_usec);
+ } else if (gs.loglevel > LOG_DEBUG + 1)
+ zlog_debug("%s: echo response received after %ld.%06ld seconds",
+ dmn->name, (long)delay.tv_sec, (long)delay.tv_usec);
+
+ SET_READ_HANDLER(dmn);
+ if (dmn->t_wakeup)
+ thread_cancel(dmn->t_wakeup);
+ SET_WAKEUP_ECHO(dmn);
+
+ return 0;
}
/*
* Wait till we notice that all daemons are ready before
* we send we are ready to systemd
*/
-static void
-daemon_send_ready (void)
+static void daemon_send_ready(void)
{
- static int sent = 0;
- if (!sent && gs.numdown == 0)
- {
- FILE *fp;
-
- fp = fopen(DAEMON_VTY_DIR "/watchfrr.started", "w");
- fclose(fp);
- zlog_notice ("Watchfrr: Notifying Systemd we are up and running");
- systemd_send_started(master, 0);
- sent = 1;
- }
+ static int sent = 0;
+ if (!sent && gs.numdown == 0) {
+ FILE *fp;
+
+ fp = fopen(DAEMON_VTY_DIR "/watchfrr.started", "w");
+ if (fp)
+ fclose(fp);
+#if defined HAVE_SYSTEMD
+ zlog_notice(
+ "Watchfrr: Notifying Systemd we are up and running");
+ systemd_send_started(master, 0);
+#endif
+ sent = 1;
+ }
}
-static void
-daemon_up(struct daemon *dmn, const char *why)
+static void daemon_up(struct daemon *dmn, const char *why)
{
- dmn->state = DAEMON_UP;
- gs.numdown--;
- dmn->connect_tries = 0;
- zlog_notice("%s state -> up : %s",dmn->name,why);
- daemon_send_ready();
- if (gs.do_ping)
- SET_WAKEUP_ECHO(dmn);
- phase_check();
+ dmn->state = DAEMON_UP;
+ gs.numdown--;
+ dmn->connect_tries = 0;
+ zlog_notice("%s state -> up : %s", dmn->name, why);
+ daemon_send_ready();
+ SET_WAKEUP_ECHO(dmn);
+ phase_check();
}
-static int
-check_connect(struct thread *t_write)
+static int check_connect(struct thread *t_write)
{
- struct daemon *dmn = THREAD_ARG(t_write);
- int sockerr;
- socklen_t reslen = sizeof(sockerr);
-
- dmn->t_write = NULL;
- if (getsockopt(dmn->fd,SOL_SOCKET,SO_ERROR,(char *)&sockerr,&reslen) < 0)
- {
- zlog_warn("%s: check_connect: getsockopt failed: %s",
- dmn->name,safe_strerror(errno));
- daemon_down(dmn,"getsockopt failed checking connection success");
- return 0;
- }
- if ((reslen == sizeof(sockerr)) && sockerr)
- {
- char why[100];
- snprintf(why,sizeof(why),
- "getsockopt reports that connection attempt failed: %s",
- safe_strerror(sockerr));
- daemon_down(dmn,why);
- return 0;
- }
-
- daemon_up(dmn,"delayed connect succeeded");
- return 0;
+ struct daemon *dmn = THREAD_ARG(t_write);
+ int sockerr;
+ socklen_t reslen = sizeof(sockerr);
+
+ dmn->t_write = NULL;
+ if (getsockopt(dmn->fd, SOL_SOCKET, SO_ERROR, (char *)&sockerr, &reslen)
+ < 0) {
+ zlog_warn("%s: check_connect: getsockopt failed: %s", dmn->name,
+ safe_strerror(errno));
+ daemon_down(dmn,
+ "getsockopt failed checking connection success");
+ return 0;
+ }
+ if ((reslen == sizeof(sockerr)) && sockerr) {
+ char why[100];
+ snprintf(
+ why, sizeof(why),
+ "getsockopt reports that connection attempt failed: %s",
+ safe_strerror(sockerr));
+ daemon_down(dmn, why);
+ return 0;
+ }
+
+ daemon_up(dmn, "delayed connect succeeded");
+ return 0;
}
-static int
-wakeup_connect_hanging(struct thread *t_wakeup)
+static int wakeup_connect_hanging(struct thread *t_wakeup)
{
- struct daemon *dmn = THREAD_ARG(t_wakeup);
- char why[100];
-
- dmn->t_wakeup = NULL;
- snprintf(why,sizeof(why),"connection attempt timed out after %ld seconds",
- gs.timeout);
- daemon_down(dmn,why);
- return 0;
+ struct daemon *dmn = THREAD_ARG(t_wakeup);
+ char why[100];
+
+ dmn->t_wakeup = NULL;
+ snprintf(why, sizeof(why),
+ "connection attempt timed out after %ld seconds", gs.timeout);
+ daemon_down(dmn, why);
+ return 0;
}
/* Making connection to protocol daemon. */
-static int
-try_connect(struct daemon *dmn)
+static int try_connect(struct daemon *dmn)
{
- int sock;
- struct sockaddr_un addr;
- socklen_t len;
-
- if (gs.loglevel > LOG_DEBUG+1)
- zlog_debug("%s: attempting to connect",dmn->name);
- dmn->connect_tries++;
-
- memset (&addr, 0, sizeof (struct sockaddr_un));
- addr.sun_family = AF_UNIX;
- snprintf(addr.sun_path, sizeof(addr.sun_path), "%s/%s.vty",
- gs.vtydir,dmn->name);
+ int sock;
+ struct sockaddr_un addr;
+ socklen_t len;
+
+ if (gs.loglevel > LOG_DEBUG + 1)
+ zlog_debug("%s: attempting to connect", dmn->name);
+ dmn->connect_tries++;
+
+ memset(&addr, 0, sizeof(struct sockaddr_un));
+ addr.sun_family = AF_UNIX;
+ snprintf(addr.sun_path, sizeof(addr.sun_path), "%s/%s.vty", gs.vtydir,
+ dmn->name);
#ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN
- len = addr.sun_len = SUN_LEN(&addr);
+ len = addr.sun_len = SUN_LEN(&addr);
#else
- len = sizeof (addr.sun_family) + strlen (addr.sun_path);
+ len = sizeof(addr.sun_family) + strlen(addr.sun_path);
#endif /* HAVE_STRUCT_SOCKADDR_UN_SUN_LEN */
- /* Quick check to see if we might succeed before we go to the trouble
- of creating a socket. */
- if (access(addr.sun_path, W_OK) < 0)
- {
- if (errno != ENOENT)
- zlog_err("%s: access to socket %s denied: %s",
- dmn->name,addr.sun_path,safe_strerror(errno));
- return -1;
- }
-
- if ((sock = socket (AF_UNIX, SOCK_STREAM, 0)) < 0)
- {
- zlog_err("%s(%s): cannot make socket: %s",
- __func__,addr.sun_path, safe_strerror(errno));
- return -1;
- }
-
- if (set_nonblocking(sock) < 0 || set_cloexec(sock) < 0)
- {
- zlog_err("%s(%s): set_nonblocking/cloexec(%d) failed",
- __func__, addr.sun_path, sock);
- close(sock);
- return -1;
- }
-
- if (connect (sock, (struct sockaddr *) &addr, len) < 0)
- {
- if ((errno != EINPROGRESS) && (errno != EWOULDBLOCK))
- {
- if (gs.loglevel > LOG_DEBUG)
- zlog_debug("%s(%s): connect failed: %s",
- __func__,addr.sun_path, safe_strerror(errno));
- close (sock);
- return -1;
+ /* Quick check to see if we might succeed before we go to the trouble
+ of creating a socket. */
+ if (access(addr.sun_path, W_OK) < 0) {
+ if (errno != ENOENT)
+ flog_err_sys(LIB_ERR_SYSTEM_CALL,
+ "%s: access to socket %s denied: %s",
+ dmn->name, addr.sun_path,
+ safe_strerror(errno));
+ return -1;
+ }
+
+ if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
+ flog_err_sys(LIB_ERR_SOCKET, "%s(%s): cannot make socket: %s",
+ __func__, addr.sun_path, safe_strerror(errno));
+ return -1;
+ }
+
+ if (set_nonblocking(sock) < 0 || set_cloexec(sock) < 0) {
+ flog_err_sys(LIB_ERR_SYSTEM_CALL,
+ "%s(%s): set_nonblocking/cloexec(%d) failed",
+ __func__, addr.sun_path, sock);
+ close(sock);
+ return -1;
}
- if (gs.loglevel > LOG_DEBUG)
- zlog_debug("%s: connection in progress",dmn->name);
- dmn->state = DAEMON_CONNECTING;
- dmn->fd = sock;
- dmn->t_write = thread_add_write(master,check_connect,dmn,dmn->fd);
- dmn->t_wakeup = thread_add_timer(master,wakeup_connect_hanging,dmn,
- gs.timeout);
- SET_READ_HANDLER(dmn);
- return 0;
- }
-
- dmn->fd = sock;
- SET_READ_HANDLER(dmn);
- daemon_up(dmn,"connect succeeded");
- return 1;
+
+ if (connect(sock, (struct sockaddr *)&addr, len) < 0) {
+ if ((errno != EINPROGRESS) && (errno != EWOULDBLOCK)) {
+ if (gs.loglevel > LOG_DEBUG)
+ zlog_debug("%s(%s): connect failed: %s",
+ __func__, addr.sun_path,
+ safe_strerror(errno));
+ close(sock);
+ return -1;
+ }
+ if (gs.loglevel > LOG_DEBUG)
+ zlog_debug("%s: connection in progress", dmn->name);
+ dmn->state = DAEMON_CONNECTING;
+ dmn->fd = sock;
+ dmn->t_write = NULL;
+ thread_add_write(master, check_connect, dmn, dmn->fd,
+ &dmn->t_write);
+ dmn->t_wakeup = NULL;
+ thread_add_timer(master, wakeup_connect_hanging, dmn,
+ gs.timeout, &dmn->t_wakeup);
+ SET_READ_HANDLER(dmn);
+ return 0;
+ }
+
+ dmn->fd = sock;
+ SET_READ_HANDLER(dmn);
+ daemon_up(dmn, "connect succeeded");
+ return 1;
}
-static int
-phase_hanging(struct thread *t_hanging)
+static int phase_hanging(struct thread *t_hanging)
{
- gs.t_phase_hanging = NULL;
- zlog_err("Phase [%s] hanging for %ld seconds, aborting phased restart",
- phase_str[gs.phase],PHASE_TIMEOUT);
- gs.phase = PHASE_NONE;
- return 0;
+ gs.t_phase_hanging = NULL;
+ flog_err(WATCHFRR_ERR_CONNECTION,
+ "Phase [%s] hanging for %ld seconds, aborting phased restart",
+ phase_str[gs.phase], PHASE_TIMEOUT);
+ gs.phase = PHASE_NONE;
+ return 0;
}
-static void
-set_phase(restart_phase_t new_phase)
+static void set_phase(restart_phase_t new_phase)
{
- gs.phase = new_phase;
- if (gs.t_phase_hanging)
- thread_cancel(gs.t_phase_hanging);
- gs.t_phase_hanging = thread_add_timer(master,phase_hanging,NULL,
- PHASE_TIMEOUT);
+ gs.phase = new_phase;
+ if (gs.t_phase_hanging)
+ thread_cancel(gs.t_phase_hanging);
+ gs.t_phase_hanging = NULL;
+ thread_add_timer(master, phase_hanging, NULL, PHASE_TIMEOUT,
+ &gs.t_phase_hanging);
}
-static void
-phase_check(void)
+static void phase_check(void)
{
- switch (gs.phase)
- {
- case PHASE_NONE:
- break;
- case PHASE_STOPS_PENDING:
- if (gs.numpids)
- break;
- zlog_info("Phased restart: all routing daemon stop jobs have completed.");
- set_phase(PHASE_WAITING_DOWN);
- /*FALLTHRU*/
- case PHASE_WAITING_DOWN:
- if (gs.numdown+IS_UP(gs.special) < gs.numdaemons)
- break;
- zlog_info("Phased restart: all routing daemons now down.");
- run_job(&gs.special->restart,"restart",gs.restart_command,1,1);
- set_phase(PHASE_ZEBRA_RESTART_PENDING);
- /*FALLTHRU*/
- case PHASE_ZEBRA_RESTART_PENDING:
- if (gs.special->restart.pid)
- break;
- zlog_info("Phased restart: %s restart job completed.",gs.special->name);
- set_phase(PHASE_WAITING_ZEBRA_UP);
- /*FALLTHRU*/
- case PHASE_WAITING_ZEBRA_UP:
- if (!IS_UP(gs.special))
- break;
- zlog_info("Phased restart: %s is now up.",gs.special->name);
- {
- struct daemon *dmn;
- for (dmn = gs.daemons; dmn; dmn = dmn->next)
- {
- if (dmn != gs.special)
- run_job(&dmn->restart,"start",gs.start_command,1,0);
- }
- }
- gs.phase = PHASE_NONE;
- THREAD_OFF(gs.t_phase_hanging);
- zlog_notice("Phased global restart has completed.");
- break;
- }
+ switch (gs.phase) {
+ case PHASE_NONE:
+ break;
+ case PHASE_STOPS_PENDING:
+ if (gs.numpids)
+ break;
+ zlog_info(
+ "Phased restart: all routing daemon stop jobs have completed.");
+ set_phase(PHASE_WAITING_DOWN);
+
+ /*FALLTHRU*/
+ case PHASE_WAITING_DOWN:
+ if (gs.numdown + IS_UP(gs.special) < gs.numdaemons)
+ break;
+ zlog_info("Phased restart: all routing daemons now down.");
+ run_job(&gs.special->restart, "restart", gs.restart_command, 1,
+ 1);
+ set_phase(PHASE_ZEBRA_RESTART_PENDING);
+
+ /*FALLTHRU*/
+ case PHASE_ZEBRA_RESTART_PENDING:
+ if (gs.special->restart.pid)
+ break;
+ zlog_info("Phased restart: %s restart job completed.",
+ gs.special->name);
+ set_phase(PHASE_WAITING_ZEBRA_UP);
+
+ /*FALLTHRU*/
+ case PHASE_WAITING_ZEBRA_UP:
+ if (!IS_UP(gs.special))
+ break;
+ zlog_info("Phased restart: %s is now up.", gs.special->name);
+ {
+ struct daemon *dmn;
+ for (dmn = gs.daemons; dmn; dmn = dmn->next) {
+ if (dmn != gs.special)
+ run_job(&dmn->restart, "start",
+ gs.start_command, 1, 0);
+ }
+ }
+ gs.phase = PHASE_NONE;
+ THREAD_OFF(gs.t_phase_hanging);
+ zlog_notice("Phased global restart has completed.");
+ break;
+ }
}
-static void
-try_restart(struct daemon *dmn)
+static void try_restart(struct daemon *dmn)
{
- switch (gs.mode)
- {
- case MODE_MONITOR:
- return;
- case MODE_GLOBAL_RESTART:
- run_job(&gs.restart,"restart",gs.restart_command,0,1);
- break;
- case MODE_SEPARATE_RESTART:
- run_job(&dmn->restart,"restart",gs.restart_command,0,1);
- break;
- case MODE_PHASED_ZEBRA_RESTART:
- if (dmn != gs.special)
- {
- if ((gs.special->state == DAEMON_UP) && (gs.phase == PHASE_NONE))
- run_job(&dmn->restart,"restart",gs.restart_command,0,1);
- else
- zlog_debug("%s: postponing restart attempt because master %s daemon "
- "not up [%s], or phased restart in progress",
- dmn->name,gs.special->name,state_str[gs.special->state]);
- break;
- }
- /*FALLTHRU*/
- case MODE_PHASED_ALL_RESTART:
- if ((gs.phase != PHASE_NONE) || gs.numpids)
- {
- if (gs.loglevel > LOG_DEBUG+1)
- zlog_debug("postponing phased global restart: restart already in "
- "progress [%s], or outstanding child processes [%d]",
- phase_str[gs.phase],gs.numpids);
- break;
- }
- /* Is it too soon for a restart? */
- {
- struct timeval delay;
- if (time_elapsed(&delay,&gs.special->restart.time)->tv_sec <
- gs.special->restart.interval)
+ if (watch_only)
+ return;
+
+ if (dmn != gs.special) {
+ if ((gs.special->state == DAEMON_UP)
+ && (gs.phase == PHASE_NONE))
+ run_job(&dmn->restart, "restart", gs.restart_command, 0,
+ 1);
+ else
+ zlog_debug(
+ "%s: postponing restart attempt because master %s daemon "
+ "not up [%s], or phased restart in progress",
+ dmn->name, gs.special->name,
+ state_str[gs.special->state]);
+ return;
+ }
+
+ if ((gs.phase != PHASE_NONE) || gs.numpids) {
+ if (gs.loglevel > LOG_DEBUG + 1)
+ zlog_debug(
+ "postponing phased global restart: restart already in "
+ "progress [%s], or outstanding child processes [%d]",
+ phase_str[gs.phase], gs.numpids);
+ return;
+ }
+ /* Is it too soon for a restart? */
{
- if (gs.loglevel > LOG_DEBUG+1)
- zlog_debug("postponing phased global restart: "
- "elapsed time %ld < retry interval %ld",
- (long)delay.tv_sec,gs.special->restart.interval);
- break;
+ struct timeval delay;
+ if (time_elapsed(&delay, &gs.special->restart.time)->tv_sec
+ < gs.special->restart.interval) {
+ if (gs.loglevel > LOG_DEBUG + 1)
+ zlog_debug(
+ "postponing phased global restart: "
+ "elapsed time %ld < retry interval %ld",
+ (long)delay.tv_sec,
+ gs.special->restart.interval);
+ return;
+ }
+ }
+ run_job(&gs.restart, "restart", gs.restart_command, 0, 1);
+}
+
+static int wakeup_unresponsive(struct thread *t_wakeup)
+{
+ struct daemon *dmn = THREAD_ARG(t_wakeup);
+
+ dmn->t_wakeup = NULL;
+ if (dmn->state != DAEMON_UNRESPONSIVE)
+ flog_err(WATCHFRR_ERR_CONNECTION,
+ "%s: no longer unresponsive (now %s), "
+ "wakeup should have been cancelled!",
+ dmn->name, state_str[dmn->state]);
+ else {
+ SET_WAKEUP_UNRESPONSIVE(dmn);
+ try_restart(dmn);
}
- }
- run_job(&gs.restart,"restart",gs.restart_command,0,1);
- break;
- default:
- zlog_err("error: unknown restart mode %d",gs.mode);
- break;
- }
+ return 0;
}
-static int
-wakeup_unresponsive(struct thread *t_wakeup)
+static int wakeup_no_answer(struct thread *t_wakeup)
{
- struct daemon *dmn = THREAD_ARG(t_wakeup);
-
- dmn->t_wakeup = NULL;
- if (dmn->state != DAEMON_UNRESPONSIVE)
- zlog_err("%s: no longer unresponsive (now %s), "
- "wakeup should have been cancelled!",
- dmn->name,state_str[dmn->state]);
- else
- {
- SET_WAKEUP_UNRESPONSIVE(dmn);
- try_restart(dmn);
- }
- return 0;
+ struct daemon *dmn = THREAD_ARG(t_wakeup);
+
+ dmn->t_wakeup = NULL;
+ dmn->state = DAEMON_UNRESPONSIVE;
+ flog_err(WATCHFRR_ERR_CONNECTION,
+ "%s state -> unresponsive : no response yet to ping "
+ "sent %ld seconds ago",
+ dmn->name, gs.timeout);
+ SET_WAKEUP_UNRESPONSIVE(dmn);
+ try_restart(dmn);
+ return 0;
}
-static int
-wakeup_no_answer(struct thread *t_wakeup)
+static int wakeup_send_echo(struct thread *t_wakeup)
{
- struct daemon *dmn = THREAD_ARG(t_wakeup);
-
- dmn->t_wakeup = NULL;
- dmn->state = DAEMON_UNRESPONSIVE;
- zlog_err("%s state -> unresponsive : no response yet to ping "
- "sent %ld seconds ago",dmn->name,gs.timeout);
- if (gs.unresponsive_restart)
- {
- SET_WAKEUP_UNRESPONSIVE(dmn);
- try_restart(dmn);
- }
- return 0;
+ static const char echocmd[] = "echo " PING_TOKEN;
+ ssize_t rc;
+ struct daemon *dmn = THREAD_ARG(t_wakeup);
+
+ dmn->t_wakeup = NULL;
+ if (((rc = write(dmn->fd, echocmd, sizeof(echocmd))) < 0)
+ || ((size_t)rc != sizeof(echocmd))) {
+ char why[100 + sizeof(echocmd)];
+ snprintf(why, sizeof(why),
+ "write '%s' returned %d instead of %u", echocmd,
+ (int)rc, (unsigned int)sizeof(echocmd));
+ daemon_down(dmn, why);
+ } else {
+ gettimeofday(&dmn->echo_sent, NULL);
+ dmn->t_wakeup = NULL;
+ thread_add_timer(master, wakeup_no_answer, dmn, gs.timeout,
+ &dmn->t_wakeup);
+ }
+ return 0;
}
-static int
-wakeup_send_echo(struct thread *t_wakeup)
+bool check_all_up(void)
{
- static const char echocmd[] = "echo " PING_TOKEN;
- ssize_t rc;
- struct daemon *dmn = THREAD_ARG(t_wakeup);
-
- dmn->t_wakeup = NULL;
- if (((rc = write(dmn->fd,echocmd,sizeof(echocmd))) < 0) ||
- ((size_t)rc != sizeof(echocmd)))
- {
- char why[100+sizeof(echocmd)];
- snprintf(why,sizeof(why),"write '%s' returned %d instead of %u",
- echocmd,(int)rc,(u_int)sizeof(echocmd));
- daemon_down(dmn,why);
- }
- else
- {
- gettimeofday(&dmn->echo_sent,NULL);
- dmn->t_wakeup = thread_add_timer(master,wakeup_no_answer,dmn,gs.timeout);
- }
- return 0;
+ struct daemon *dmn;
+
+ for (dmn = gs.daemons; dmn; dmn = dmn->next)
+ if (dmn->state != DAEMON_UP)
+ return false;
+ return true;
}
-static void
-sigint(void)
+static void sigint(void)
{
- zlog_notice("Terminating on signal");
- systemd_send_stopping ();
- exit(0);
+ zlog_notice("Terminating on signal");
+ systemd_send_stopping();
+ exit(0);
}
-static int
-valid_command(const char *cmd)
+static int valid_command(const char *cmd)
{
- char *p;
+ char *p;
- return ((p = strchr(cmd,'%')) != NULL) && (*(p+1) == 's') && !strchr(p+1,'%');
+ return ((p = strchr(cmd, '%')) != NULL) && (*(p + 1) == 's')
+ && !strchr(p + 1, '%');
}
/* This is an ugly hack to circumvent problems with passing command-line
arguments that contain spaces. The fix is to use a configuration file. */
-static char *
-translate_blanks(const char *cmd, const char *blankstr)
+static char *translate_blanks(const char *cmd, const char *blankstr)
{
- char *res;
- char *p;
- size_t bslen = strlen(blankstr);
-
- if (!(res = strdup(cmd)))
- {
- perror("strdup");
- exit(1);
- }
- while ((p = strstr(res,blankstr)) != NULL)
- {
- *p = ' ';
- if (bslen != 1)
- memmove(p+1,p+bslen,strlen(p+bslen)+1);
- }
- return res;
+ char *res;
+ char *p;
+ size_t bslen = strlen(blankstr);
+
+ if (!(res = strdup(cmd))) {
+ perror("strdup");
+ exit(1);
+ }
+ while ((p = strstr(res, blankstr)) != NULL) {
+ *p = ' ';
+ if (bslen != 1)
+ memmove(p + 1, p + bslen, strlen(p + bslen) + 1);
+ }
+ return res;
}
-struct zebra_privs_t watchfrr_privs =
-{
+struct zebra_privs_t watchfrr_privs = {
#ifdef VTY_GROUP
- .vty_group = VTY_GROUP,
+ .vty_group = VTY_GROUP,
#endif
};
-int
-main(int argc, char **argv)
+static struct quagga_signal_t watchfrr_signals[] = {
+ {
+ .signal = SIGINT,
+ .handler = sigint,
+ },
+ {
+ .signal = SIGTERM,
+ .handler = sigint,
+ },
+ {
+ .signal = SIGCHLD,
+ .handler = sigchild,
+ },
+};
+
+FRR_DAEMON_INFO(watchfrr, WATCHFRR,
+ .flags = FRR_NO_PRIVSEP | FRR_NO_TCPVTY | FRR_LIMITED_CLI
+ | FRR_NO_CFG_PID_DRY | FRR_NO_ZCLIENT,
+
+ .printhelp = printhelp,
+ .copyright = "Copyright 2004 Andrew J. Schorr",
+
+ .signals = watchfrr_signals,
+ .n_signals = array_size(watchfrr_signals),
+
+ .privs = &watchfrr_privs, )
+
+#define DEPRECATED_OPTIONS "aAezR:"
+
+int main(int argc, char **argv)
{
- const char *progname;
- int opt;
- int daemon_mode = 0;
- const char *pidfile = DEFAULT_PIDFILE;
- const char *special = "zebra";
- const char *blankstr = NULL;
- static struct quagga_signal_t my_signals[] =
- {
- {
- .signal = SIGINT,
- .handler = sigint,
- },
- {
- .signal = SIGTERM,
- .handler = sigint,
- },
- {
- .signal = SIGCHLD,
- .handler = sigchild,
- },
- };
-
- if ((progname = strrchr (argv[0], '/')) != NULL)
- progname++;
- else
- progname = argv[0];
-
- gs.restart.name = "all";
- while ((opt = getopt_long(argc, argv, "aAb:dek:l:m:M:i:p:r:R:S:s:t:T:zvh",
- longopts, 0)) != EOF)
- {
- switch (opt)
- {
- case 0:
- break;
- case 'a':
- if ((gs.mode != MODE_MONITOR) && (gs.mode != MODE_SEPARATE_RESTART))
- {
- fputs("Ambiguous operating mode selected.\n",stderr);
- return usage(progname,1);
- }
- gs.mode = MODE_PHASED_ZEBRA_RESTART;
- break;
- case 'A':
- if ((gs.mode != MODE_MONITOR) && (gs.mode != MODE_SEPARATE_RESTART))
- {
- fputs("Ambiguous operating mode selected.\n",stderr);
- return usage(progname,1);
- }
- gs.mode = MODE_PHASED_ALL_RESTART;
- break;
- case 'b':
- blankstr = optarg;
- break;
- case 'd':
- daemon_mode = 1;
- break;
- case 'e':
- gs.do_ping = 0;
- break;
- case 'k':
- if (!valid_command(optarg))
- {
- fprintf(stderr,"Invalid kill command, must contain '%%s': %s\n",
- optarg);
- return usage(progname,1);
- }
- gs.stop_command = optarg;
- break;
- case 'l':
- {
- char garbage[3];
- if ((sscanf(optarg,"%d%1s",&gs.loglevel,garbage) != 1) ||
- (gs.loglevel < LOG_EMERG))
- {
- fprintf(stderr,"Invalid loglevel argument: %s\n",optarg);
- return usage(progname,1);
- }
- }
- break;
- case 'm':
- {
- char garbage[3];
- if ((sscanf(optarg,"%ld%1s",
- &gs.min_restart_interval,garbage) != 1) ||
- (gs.min_restart_interval < 0))
- {
- fprintf(stderr,"Invalid min_restart_interval argument: %s\n",
- optarg);
- return usage(progname,1);
- }
- }
- break;
- case 'M':
- {
- char garbage[3];
- if ((sscanf(optarg,"%ld%1s",
- &gs.max_restart_interval,garbage) != 1) ||
- (gs.max_restart_interval < 0))
- {
- fprintf(stderr,"Invalid max_restart_interval argument: %s\n",
- optarg);
- return usage(progname,1);
- }
- }
- break;
- case 'i':
- {
- char garbage[3];
- int period;
- if ((sscanf(optarg,"%d%1s",&period,garbage) != 1) ||
- (gs.period < 1))
- {
- fprintf(stderr,"Invalid interval argument: %s\n",optarg);
- return usage(progname,1);
- }
- gs.period = 1000*period;
- }
- break;
- case 'p':
- pidfile = optarg;
- break;
- case 'r':
- if ((gs.mode == MODE_GLOBAL_RESTART) ||
- (gs.mode == MODE_SEPARATE_RESTART))
- {
- fputs("Ambiguous operating mode selected.\n",stderr);
- return usage(progname,1);
- }
- if (!valid_command(optarg))
- {
- fprintf(stderr,
- "Invalid restart command, must contain '%%s': %s\n",
- optarg);
- return usage(progname,1);
- }
- gs.restart_command = optarg;
- if (gs.mode == MODE_MONITOR)
- gs.mode = MODE_SEPARATE_RESTART;
- break;
- case 'R':
- if (gs.mode != MODE_MONITOR)
- {
- fputs("Ambiguous operating mode selected.\n",stderr);
- return usage(progname,1);
- }
- if (strchr(optarg,'%'))
- {
- fprintf(stderr,
- "Invalid restart-all arg, must not contain '%%s': %s\n",
- optarg);
- return usage(progname,1);
- }
- gs.restart_command = optarg;
- gs.mode = MODE_GLOBAL_RESTART;
- break;
- case 's':
- if (!valid_command(optarg))
- {
- fprintf(stderr,"Invalid start command, must contain '%%s': %s\n",
- optarg);
- return usage(progname,1);
- }
- gs.start_command = optarg;
- break;
- case 'S':
- gs.vtydir = optarg;
- break;
- case 't':
- {
- char garbage[3];
- if ((sscanf(optarg,"%ld%1s",&gs.timeout,garbage) != 1) ||
- (gs.timeout < 1))
- {
- fprintf(stderr,"Invalid timeout argument: %s\n",optarg);
- return usage(progname,1);
- }
- }
- break;
- case 'T':
- {
- char garbage[3];
- if ((sscanf(optarg,"%ld%1s",&gs.restart_timeout,garbage) != 1) ||
- (gs.restart_timeout < 1))
- {
- fprintf(stderr,"Invalid restart timeout argument: %s\n",optarg);
- return usage(progname,1);
- }
- }
- break;
- case 'z':
- gs.unresponsive_restart = 1;
- break;
- case 'v':
- printf ("%s version %s\n", progname, FRR_VERSION);
- puts("Copyright 2004 Andrew J. Schorr");
- return 0;
- case 'h':
- return usage(progname,0);
- default:
- fputs("Invalid option.\n",stderr);
- return usage(progname,1);
- }
- }
-
- if (gs.unresponsive_restart && (gs.mode == MODE_MONITOR))
- {
- fputs("Option -z requires a -r or -R restart option.\n",stderr);
- return usage(progname,1);
- }
- switch (gs.mode)
- {
- case MODE_MONITOR:
- if (gs.restart_command || gs.start_command || gs.stop_command)
- {
- fprintf(stderr,"No kill/(re)start commands needed for %s mode.\n",
- mode_str[gs.mode]);
- return usage(progname,1);
+ int opt;
+ const char *pidfile = pidfile_default;
+ const char *special = "zebra";
+ const char *blankstr = NULL;
+
+ snprintf(pidfile_default, sizeof(pidfile_default), "%s/watchfrr.pid",
+ frr_vtydir);
+
+ frr_preinit(&watchfrr_di, argc, argv);
+ progname = watchfrr_di.progname;
+
+ frr_opt_add("b:dk:l:i:p:r:S:s:t:T:" DEPRECATED_OPTIONS, longopts, "");
+
+ gs.restart.name = "all";
+ while ((opt = frr_getopt(argc, argv, NULL)) != EOF) {
+ if (opt && opt < 128 && strchr(DEPRECATED_OPTIONS, opt)) {
+ fprintf(stderr,
+ "The -%c option no longer exists.\n"
+ "Please refer to the watchfrr(8) man page.\n",
+ opt);
+ exit(1);
+ }
+
+ switch (opt) {
+ case 0:
+ break;
+ case 'b':
+ blankstr = optarg;
+ break;
+ case OPTION_DRY:
+ watch_only = true;
+ break;
+ case 'k':
+ if (!valid_command(optarg)) {
+ fprintf(stderr,
+ "Invalid kill command, must contain '%%s': %s\n",
+ optarg);
+ frr_help_exit(1);
+ }
+ gs.stop_command = optarg;
+ break;
+ case 'l': {
+ char garbage[3];
+ if ((sscanf(optarg, "%d%1s", &gs.loglevel, garbage)
+ != 1)
+ || (gs.loglevel < LOG_EMERG)) {
+ fprintf(stderr,
+ "Invalid loglevel argument: %s\n",
+ optarg);
+ frr_help_exit(1);
+ }
+ } break;
+ case OPTION_MINRESTART: {
+ char garbage[3];
+ if ((sscanf(optarg, "%ld%1s", &gs.min_restart_interval,
+ garbage)
+ != 1)
+ || (gs.min_restart_interval < 0)) {
+ fprintf(stderr,
+ "Invalid min_restart_interval argument: %s\n",
+ optarg);
+ frr_help_exit(1);
+ }
+ } break;
+ case OPTION_MAXRESTART: {
+ char garbage[3];
+ if ((sscanf(optarg, "%ld%1s", &gs.max_restart_interval,
+ garbage)
+ != 1)
+ || (gs.max_restart_interval < 0)) {
+ fprintf(stderr,
+ "Invalid max_restart_interval argument: %s\n",
+ optarg);
+ frr_help_exit(1);
+ }
+ } break;
+ case 'i': {
+ char garbage[3];
+ int period;
+ if ((sscanf(optarg, "%d%1s", &period, garbage) != 1)
+ || (gs.period < 1)) {
+ fprintf(stderr,
+ "Invalid interval argument: %s\n",
+ optarg);
+ frr_help_exit(1);
+ }
+ gs.period = 1000 * period;
+ } break;
+ case 'p':
+ pidfile = optarg;
+ break;
+ case 'r':
+ if (!valid_command(optarg)) {
+ fprintf(stderr,
+ "Invalid restart command, must contain '%%s': %s\n",
+ optarg);
+ frr_help_exit(1);
+ }
+ gs.restart_command = optarg;
+ break;
+ case 's':
+ if (!valid_command(optarg)) {
+ fprintf(stderr,
+ "Invalid start command, must contain '%%s': %s\n",
+ optarg);
+ frr_help_exit(1);
+ }
+ gs.start_command = optarg;
+ break;
+ case 'S':
+ gs.vtydir = optarg;
+ break;
+ case 't': {
+ char garbage[3];
+ if ((sscanf(optarg, "%ld%1s", &gs.timeout, garbage)
+ != 1)
+ || (gs.timeout < 1)) {
+ fprintf(stderr,
+ "Invalid timeout argument: %s\n",
+ optarg);
+ frr_help_exit(1);
+ }
+ } break;
+ case 'T': {
+ char garbage[3];
+ if ((sscanf(optarg, "%ld%1s", &gs.restart_timeout,
+ garbage)
+ != 1)
+ || (gs.restart_timeout < 1)) {
+ fprintf(stderr,
+ "Invalid restart timeout argument: %s\n",
+ optarg);
+ frr_help_exit(1);
+ }
+ } break;
+ default:
+ fputs("Invalid option.\n", stderr);
+ frr_help_exit(1);
+ }
}
- break;
- case MODE_GLOBAL_RESTART:
- case MODE_SEPARATE_RESTART:
- if (!gs.restart_command || gs.start_command || gs.stop_command)
- {
- fprintf(stderr,"No start/kill commands needed in [%s] mode.\n",
- mode_str[gs.mode]);
- return usage(progname,1);
+
+ if (watch_only
+ && (gs.start_command || gs.stop_command || gs.restart_command)) {
+ fputs("Options -r/-s/-k are not used when --dry is active.\n",
+ stderr);
}
- break;
- case MODE_PHASED_ZEBRA_RESTART:
- case MODE_PHASED_ALL_RESTART:
- if (!gs.restart_command || !gs.start_command || !gs.stop_command)
- {
- fprintf(stderr,
- "Need start, kill, and restart commands in [%s] mode.\n",
- mode_str[gs.mode]);
- return usage(progname,1);
+ if (!watch_only
+ && (!gs.restart_command || !gs.start_command || !gs.stop_command)) {
+ fprintf(stderr,
+ "Options -s (start), -k (kill), and -r (restart) are required.\n");
+ frr_help_exit(1);
}
- break;
- }
-
- if (blankstr)
- {
- if (gs.restart_command)
- gs.restart_command = translate_blanks(gs.restart_command,blankstr);
- if (gs.start_command)
- gs.start_command = translate_blanks(gs.start_command,blankstr);
- if (gs.stop_command)
- gs.stop_command = translate_blanks(gs.stop_command,blankstr);
- }
-
- gs.restart.interval = gs.min_restart_interval;
-
- zprivs_init (&watchfrr_privs);
-
- master = thread_master_create();
- cmd_init(-1);
- memory_init();
- vty_init(master);
- watchfrr_vty_init();
- vty_serv_sock(NULL, 0, WATCHFRR_VTYSH_PATH);
-
- signal_init (master, array_size(my_signals), my_signals);
- srandom(time(NULL));
-
- {
- int i;
- struct daemon *tail = NULL;
-
- for (i = optind; i < argc; i++)
- {
- struct daemon *dmn;
- if (!(dmn = (struct daemon *)calloc(1,sizeof(*dmn))))
- {
- fprintf(stderr,"calloc(1,%u) failed: %s\n",
- (u_int)sizeof(*dmn), safe_strerror(errno));
- return 1;
- }
- dmn->name = dmn->restart.name = argv[i];
- dmn->state = DAEMON_INIT;
- gs.numdaemons++;
- gs.numdown++;
- dmn->fd = -1;
- dmn->t_wakeup = thread_add_timer_msec(master,wakeup_init,dmn,
- 100+(random() % 900));
- dmn->restart.interval = gs.min_restart_interval;
- if (tail)
- tail->next = dmn;
- else
- gs.daemons = dmn;
- tail = dmn;
-
- if (((gs.mode == MODE_PHASED_ZEBRA_RESTART) ||
- (gs.mode == MODE_PHASED_ALL_RESTART)) &&
- !strcmp(dmn->name,special))
- gs.special = dmn;
- }
- }
- if (!gs.daemons)
- {
- fputs("Must specify one or more daemons to monitor.\n",stderr);
- return usage(progname,1);
- }
- if (((gs.mode == MODE_PHASED_ZEBRA_RESTART) ||
- (gs.mode == MODE_PHASED_ALL_RESTART)) && !gs.special)
- {
- fprintf(stderr,"In mode [%s], but cannot find master daemon %s\n",
- mode_str[gs.mode],special);
- return usage(progname,1);
- }
-
- zlog_default = openzlog(progname, ZLOG_WATCHFRR, 0,
- LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON);
- zlog_set_level(NULL, ZLOG_DEST_MONITOR, ZLOG_DISABLED);
- if (daemon_mode)
- {
- zlog_set_level(NULL, ZLOG_DEST_SYSLOG, MIN(gs.loglevel,LOG_DEBUG));
- if (daemon (0, 0) < 0)
- {
- fprintf(stderr, "Watchfrr daemon failed: %s", strerror(errno));
- exit (1);
+ if (blankstr) {
+ if (gs.restart_command)
+ gs.restart_command =
+ translate_blanks(gs.restart_command, blankstr);
+ if (gs.start_command)
+ gs.start_command =
+ translate_blanks(gs.start_command, blankstr);
+ if (gs.stop_command)
+ gs.stop_command =
+ translate_blanks(gs.stop_command, blankstr);
}
- }
- else
- zlog_set_level(NULL, ZLOG_DEST_STDOUT, MIN(gs.loglevel,LOG_DEBUG));
- /* Make sure we're not already running. */
- pid_output (pidfile);
+ gs.restart.interval = gs.min_restart_interval;
+
+ master = frr_init();
+ watchfrr_error_init();
+
+ zlog_set_level(ZLOG_DEST_MONITOR, ZLOG_DISABLED);
+ if (watchfrr_di.daemon_mode) {
+ zlog_set_level(ZLOG_DEST_SYSLOG, MIN(gs.loglevel, LOG_DEBUG));
+ if (daemon(0, 0) < 0) {
+ fprintf(stderr, "Watchfrr daemon failed: %s",
+ strerror(errno));
+ exit(1);
+ }
+ } else
+ zlog_set_level(ZLOG_DEST_STDOUT, MIN(gs.loglevel, LOG_DEBUG));
+
+ watchfrr_vty_init();
- /* Announce which daemons are being monitored. */
- {
- struct daemon *dmn;
- size_t len = 0;
+ frr_vty_serv();
- for (dmn = gs.daemons; dmn; dmn = dmn->next)
- len += strlen(dmn->name)+1;
+ {
+ int i;
+ struct daemon *tail = NULL;
+
+ for (i = optind; i < argc; i++) {
+ struct daemon *dmn;
+
+ if (!(dmn = (struct daemon *)calloc(1, sizeof(*dmn)))) {
+ fprintf(stderr, "calloc(1,%u) failed: %s\n",
+ (unsigned int)sizeof(*dmn),
+ safe_strerror(errno));
+ return 1;
+ }
+ dmn->name = dmn->restart.name = argv[i];
+ dmn->state = DAEMON_INIT;
+ gs.numdaemons++;
+ gs.numdown++;
+ dmn->fd = -1;
+ dmn->t_wakeup = NULL;
+ thread_add_timer_msec(master, wakeup_init, dmn,
+ 100 + (random() % 900),
+ &dmn->t_wakeup);
+ dmn->restart.interval = gs.min_restart_interval;
+ if (tail)
+ tail->next = dmn;
+ else
+ gs.daemons = dmn;
+ tail = dmn;
+
+ if (!strcmp(dmn->name, special))
+ gs.special = dmn;
+ }
+ }
+ if (!gs.daemons) {
+ fputs("Must specify one or more daemons to monitor.\n", stderr);
+ frr_help_exit(1);
+ }
+ if (!watch_only && !gs.special) {
+ fprintf(stderr, "\"%s\" daemon must be in daemon list\n",
+ special);
+ frr_help_exit(1);
+ }
- {
- char buf[len+1];
- char *p = buf;
+ /* Make sure we're not already running. */
+ pid_output(pidfile);
- for (dmn = gs.daemons; dmn; dmn = dmn->next)
+ /* Announce which daemons are being monitored. */
{
- if (p != buf)
- *p++ = ' ';
- strcpy(p,dmn->name);
- p += strlen(p);
+ struct daemon *dmn;
+ size_t len = 0;
+
+ for (dmn = gs.daemons; dmn; dmn = dmn->next)
+ len += strlen(dmn->name) + 1;
+
+ {
+ char buf[len + 1];
+ char *p = buf;
+
+ for (dmn = gs.daemons; dmn; dmn = dmn->next) {
+ if (p != buf)
+ *p++ = ' ';
+ strcpy(p, dmn->name);
+ p += strlen(p);
+ }
+ zlog_notice("%s %s watching [%s]%s", progname,
+ FRR_VERSION, buf,
+ watch_only ? ", monitor mode" : "");
+ }
}
- zlog_notice("%s %s watching [%s], mode [%s]",
- progname, FRR_VERSION, buf, mode_str[gs.mode]);
- }
- }
- {
- struct thread thread;
+ {
+ struct thread thread;
- while (thread_fetch (master, &thread))
- thread_call (&thread);
- }
+ while (thread_fetch(master, &thread))
+ thread_call(&thread);
+ }
- systemd_send_stopping ();
- /* Not reached. */
- return 0;
+ systemd_send_stopping();
+ /* Not reached. */
+ return 0;
}
projects / mirror_frr.git / blobdiff