X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=service.c;h=2c3c0b233be3203aee90f6190d7546254f9c0c92;hb=c9b97d2a838899d00004fbfbd3f8c2e6932c89a0;hp=1e4824d436f69c56297259e61927b049e5a93376;hpb=44d8db9e5aa86165c97289f6c78a7e42bac78362;p=elogind.git diff --git a/service.c b/service.c index 1e4824d43..2c3c0b233 100644 --- a/service.c +++ b/service.c @@ -3,31 +3,48 @@ #include #include -#include "name.h" +#include "unit.h" #include "service.h" #include "load-fragment.h" #include "load-dropin.h" #include "log.h" -static const NameActiveState state_table[_SERVICE_STATE_MAX] = { - [SERVICE_DEAD] = NAME_INACTIVE, - [SERVICE_START_PRE] = NAME_ACTIVATING, - [SERVICE_START] = NAME_ACTIVATING, - [SERVICE_START_POST] = NAME_ACTIVATING, - [SERVICE_RUNNING] = NAME_ACTIVE, - [SERVICE_RELOAD] = NAME_ACTIVE_RELOADING, - [SERVICE_STOP] = NAME_DEACTIVATING, - [SERVICE_STOP_SIGTERM] = NAME_DEACTIVATING, - [SERVICE_STOP_SIGKILL] = NAME_DEACTIVATING, - [SERVICE_STOP_POST] = NAME_DEACTIVATING, - [SERVICE_FINAL_SIGTERM] = NAME_DEACTIVATING, - [SERVICE_FINAL_SIGKILL] = NAME_DEACTIVATING, - [SERVICE_MAINTAINANCE] = NAME_INACTIVE, - [SERVICE_AUTO_RESTART] = NAME_ACTIVATING, +static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { + [SERVICE_DEAD] = UNIT_INACTIVE, + [SERVICE_START_PRE] = UNIT_ACTIVATING, + [SERVICE_START] = UNIT_ACTIVATING, + [SERVICE_START_POST] = UNIT_ACTIVATING, + [SERVICE_RUNNING] = UNIT_ACTIVE, + [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING, + [SERVICE_STOP] = UNIT_DEACTIVATING, + [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, + [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, + [SERVICE_STOP_POST] = UNIT_DEACTIVATING, + [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, + [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, + [SERVICE_MAINTAINANCE] = UNIT_INACTIVE, + [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING, }; -static void service_done(Name *n) { - Service *s = SERVICE(n); +static const char* const state_string_table[_SERVICE_STATE_MAX] = { + [SERVICE_DEAD] = "dead", + [SERVICE_START_PRE] = "start-pre", + [SERVICE_START] = "start", + [SERVICE_START_POST] = "post", + [SERVICE_RUNNING] = "running", + [SERVICE_RELOAD] = "reload", + [SERVICE_STOP] = "stop", + [SERVICE_STOP_SIGTERM] = "stop-sigterm", + [SERVICE_STOP_SIGKILL] = "stop-sigkill", + [SERVICE_STOP_POST] = "stop-post", + [SERVICE_FINAL_SIGTERM] = "final-sigterm", + [SERVICE_FINAL_SIGKILL] = "final-sigkill", + [SERVICE_MAINTAINANCE] = "maintainance", + [SERVICE_AUTO_RESTART] = "auto-restart", +}; + +static void service_done(Unit *u) { + Service *s = SERVICE(u); assert(s); @@ -41,16 +58,16 @@ static void service_done(Name *n) { /* This will leak a process, but at least no memory or any of * our resources */ if (s->main_pid > 0) { - name_unwatch_pid(n, s->main_pid); + unit_unwatch_pid(u, s->main_pid); s->main_pid = 0; } if (s->control_pid > 0) { - name_unwatch_pid(n, s->control_pid); + unit_unwatch_pid(u, s->control_pid); s->control_pid = 0; } - name_unwatch_timer(n, &s->timer_id); + unit_unwatch_timer(u, &s->timer_watch); } static int service_load_sysv(Service *s) { @@ -62,9 +79,9 @@ static int service_load_sysv(Service *s) { return -ENOENT; } -static int service_init(Name *n) { +static int service_init(Unit *u) { int r; - Service *s = SERVICE(n); + Service *s = SERVICE(u); assert(s); @@ -79,49 +96,32 @@ static int service_init(Name *n) { exec_context_init(&s->exec_context); - s->timer_id = -1; + s->timer_watch.type = WATCH_INVALID; s->state = SERVICE_DEAD; /* Load a .service file */ - r = name_load_fragment(n); + r = unit_load_fragment(u); /* Load a classic init script as a fallback */ if (r == -ENOENT) r = service_load_sysv(s); if (r < 0) { - service_done(n); + service_done(u); return r; } /* Load dropin directory data */ - if ((r = name_load_dropin(n)) < 0) { - service_done(n); + if ((r = unit_load_dropin(u)) < 0) { + service_done(u); return r; } return 0; } -static void service_dump(Name *n, FILE *f, const char *prefix) { - - static const char* const state_table[_SERVICE_STATE_MAX] = { - [SERVICE_DEAD] = "dead", - [SERVICE_START_PRE] = "start-pre", - [SERVICE_START] = "start", - [SERVICE_START_POST] = "post", - [SERVICE_RUNNING] = "running", - [SERVICE_RELOAD] = "reload", - [SERVICE_STOP] = "stop", - [SERVICE_STOP_SIGTERM] = "stop-sigterm", - [SERVICE_STOP_SIGKILL] = "stop-sigkill", - [SERVICE_STOP_POST] = "stop-post", - [SERVICE_FINAL_SIGTERM] = "final-sigterm", - [SERVICE_FINAL_SIGKILL] = "final-sigkill", - [SERVICE_MAINTAINANCE] = "maintainance", - [SERVICE_AUTO_RESTART] = "auto-restart", - }; +static void service_dump(Unit *u, FILE *f, const char *prefix) { static const char* const command_table[_SERVICE_EXEC_MAX] = { [SERVICE_EXEC_START_PRE] = "ExecStartPre", @@ -133,7 +133,7 @@ static void service_dump(Name *n, FILE *f, const char *prefix) { }; ServiceExecCommand c; - Service *s = SERVICE(n); + Service *s = SERVICE(u); char *prefix2; assert(s); @@ -144,7 +144,7 @@ static void service_dump(Name *n, FILE *f, const char *prefix) { fprintf(f, "%sService State: %s\n", - prefix, state_table[s->state]); + prefix, state_string_table[s->state]); if (s->pid_file) fprintf(f, @@ -198,6 +198,34 @@ static int service_load_pid_file(Service *s) { return 0; } +static int service_notify_sockets(Service *s) { + Iterator i; + char *t; + + assert(s); + + SET_FOREACH(t, UNIT(s)->meta.names, i) { + char *k; + Unit *p; + + /* Look for all socket objects that go by any of our + * units and collect their fds */ + + if (!(k = unit_name_change_suffix(t, ".socket"))) + return -ENOMEM; + + p = manager_get_unit(UNIT(s)->meta.manager, k); + free(k); + + if (!p) + continue; + + socket_notify_service_dead(SOCKET(p)); + } + + return 0; +} + static void service_set_state(Service *s, ServiceState state) { ServiceState old_state; assert(s); @@ -216,7 +244,7 @@ static void service_set_state(Service *s, ServiceState state) { state != SERVICE_FINAL_SIGTERM && state != SERVICE_FINAL_SIGKILL && state != SERVICE_AUTO_RESTART) - name_unwatch_timer(NAME(s), &s->timer_id); + unit_unwatch_timer(UNIT(s), &s->timer_watch); if (state != SERVICE_START_POST && state != SERVICE_RUNNING && @@ -224,8 +252,8 @@ static void service_set_state(Service *s, ServiceState state) { state != SERVICE_STOP && state != SERVICE_STOP_SIGTERM && state != SERVICE_STOP_SIGKILL) - if (s->main_pid >= 0) { - name_unwatch_pid(NAME(s), s->main_pid); + if (s->main_pid > 0) { + unit_unwatch_pid(UNIT(s), s->main_pid); s->main_pid = 0; } @@ -239,8 +267,8 @@ static void service_set_state(Service *s, ServiceState state) { state != SERVICE_STOP_POST && state != SERVICE_FINAL_SIGTERM && state != SERVICE_FINAL_SIGKILL) - if (s->control_pid >= 0) { - name_unwatch_pid(NAME(s), s->control_pid); + if (s->control_pid > 0) { + unit_unwatch_pid(UNIT(s), s->control_pid); s->control_pid = 0; } @@ -252,7 +280,20 @@ static void service_set_state(Service *s, ServiceState state) { state != SERVICE_STOP_POST) s->control_command = NULL; - name_notify(NAME(s), state_table[old_state], state_table[s->state]); + if (state == SERVICE_DEAD || + state == SERVICE_STOP || + state == SERVICE_STOP_SIGTERM || + state == SERVICE_STOP_SIGKILL || + state == SERVICE_STOP_POST || + state == SERVICE_FINAL_SIGTERM || + state == SERVICE_FINAL_SIGKILL || + state == SERVICE_MAINTAINANCE || + state == SERVICE_AUTO_RESTART) + service_notify_sockets(s); + + log_debug("%s changing %s → %s", unit_id(UNIT(s)), state_string_table[old_state], state_string_table[state]); + + unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]); } static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) { @@ -266,23 +307,26 @@ static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) { assert(fds); assert(n_fds); - SET_FOREACH(t, NAME(s)->meta.names, i) { + SET_FOREACH(t, UNIT(s)->meta.names, i) { char *k; - Name *p; + Unit *p; int *cfds; unsigned cn_fds; /* Look for all socket objects that go by any of our - * names and collect their fds */ + * units and collect their fds */ - if (!(k = name_change_suffix(t, ".socket"))) { + if (!(k = unit_name_change_suffix(t, ".socket"))) { r = -ENOMEM; goto fail; } - p = manager_get_name(NAME(s)->meta.manager, k); + p = manager_get_unit(UNIT(s)->meta.manager, k); free(k); + if (!p) + continue; + if ((r = socket_collect_fds(SOCKET(p), &cfds, &cn_fds)) < 0) goto fail; @@ -335,15 +379,15 @@ static int service_spawn(Service *s, ExecCommand *c, bool timeout, bool pass_fds goto fail; if (timeout) { - if ((r = name_watch_timer(NAME(s), s->timeout_usec, &s->timer_id)) < 0) + if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) goto fail; } else - name_unwatch_timer(NAME(s), &s->timer_id); + unit_unwatch_timer(UNIT(s), &s->timer_watch); if ((r = exec_spawn(c, &s->exec_context, fds, n_fds, &pid)) < 0) goto fail; - if ((r = name_watch_pid(NAME(s), pid)) < 0) + if ((r = unit_watch_pid(UNIT(s), pid)) < 0) /* FIXME: we need to do something here */ goto fail; @@ -356,7 +400,7 @@ fail: free(fds); if (timeout) - name_unwatch_timer(NAME(s), &s->timer_id); + unit_unwatch_timer(UNIT(s), &s->timer_watch); return r; } @@ -372,7 +416,7 @@ static void service_enter_dead(Service *s, bool success, bool allow_restart) { (s->restart == SERVICE_RESTART_ALWAYS || (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) { - if ((r = name_watch_timer(NAME(s), s->restart_usec, &s->timer_id)) < 0) + if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0) goto fail; service_set_state(s, SERVICE_AUTO_RESTART); @@ -382,7 +426,7 @@ static void service_enter_dead(Service *s, bool success, bool allow_restart) { return; fail: - log_warning("%s failed to run install restart timer: %s", name_id(NAME(s)), strerror(-r)); + log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s)), strerror(-r)); service_enter_dead(s, false, false); } @@ -407,7 +451,7 @@ static void service_enter_stop_post(Service *s, bool success) { return; fail: - log_warning("%s failed to run stop executable: %s", name_id(NAME(s)), strerror(-r)); + log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r)); service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); } @@ -450,7 +494,7 @@ static void service_enter_signal(Service *s, ServiceState state, bool success) { return; fail: - log_warning("%s failed to kill processes: %s", name_id(NAME(s)), strerror(-r)); + log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r)); if (sent) { s->failure = true; @@ -480,7 +524,7 @@ static void service_enter_stop(Service *s, bool success) { return; fail: - log_warning("%s failed to run stop executable: %s", name_id(NAME(s)), strerror(-r)); + log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r)); service_enter_signal(s, SERVICE_STOP_SIGTERM, false); } @@ -500,7 +544,7 @@ static void service_enter_start_post(Service *s) { return; fail: - log_warning("%s failed to run start-post executable: %s", name_id(NAME(s)), strerror(-r)); + log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r)); service_enter_stop(s, false); } @@ -538,7 +582,7 @@ static void service_enter_start(Service *s) { return; fail: - log_warning("%s failed to run start exectuable: %s", name_id(NAME(s)), strerror(-r)); + log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r)); service_enter_stop(s, false); } @@ -559,7 +603,7 @@ static void service_enter_start_pre(Service *s) { return; fail: - log_warning("%s failed to run start-pre executable: %s", name_id(NAME(s)), strerror(-r)); + log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s)), strerror(-r)); service_enter_dead(s, false, true); } @@ -567,16 +611,16 @@ static void service_enter_restart(Service *s) { int r; assert(s); - if ((r = manager_add_job(NAME(s)->meta.manager, JOB_START, NAME(s), JOB_FAIL, false, NULL)) < 0) + if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0) goto fail; - log_debug("%s scheduled restart job.", name_id(NAME(s))); + log_debug("%s scheduled restart job.", unit_id(UNIT(s))); service_enter_dead(s, true, false); return; fail: - log_warning("%s failed to schedule restart job: %s", name_id(NAME(s)), strerror(-r)); + log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s)), strerror(-r)); service_enter_dead(s, false, false); } @@ -597,7 +641,7 @@ static void service_enter_reload(Service *s) { return; fail: - log_warning("%s failed to run reload executable: %s", name_id(NAME(s)), strerror(-r)); + log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s)), strerror(-r)); service_enter_stop(s, false); } @@ -619,7 +663,7 @@ static void service_run_next(Service *s, bool success) { return; fail: - log_warning("%s failed to run spawn next executable: %s", name_id(NAME(s)), strerror(-r)); + log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s)), strerror(-r)); if (s->state == SERVICE_STOP) service_enter_stop_post(s, false); @@ -629,8 +673,8 @@ fail: service_enter_stop(s, false); } -static int service_start(Name *n) { - Service *s = SERVICE(n); +static int service_start(Unit *u) { + Service *s = SERVICE(u); assert(s); @@ -659,8 +703,8 @@ static int service_start(Name *n) { return 0; } -static int service_stop(Name *n) { - Service *s = SERVICE(n); +static int service_stop(Unit *u) { + Service *s = SERVICE(u); assert(s); @@ -681,8 +725,8 @@ static int service_stop(Name *n) { return 0; } -static int service_reload(Name *n) { - Service *s = SERVICE(n); +static int service_reload(Unit *u) { + Service *s = SERVICE(u); assert(s); @@ -692,18 +736,18 @@ static int service_reload(Name *n) { return 0; } -static bool service_can_reload(Name *n) { - Service *s = SERVICE(n); +static bool service_can_reload(Unit *u) { + Service *s = SERVICE(u); assert(s); return !!s->exec_command[SERVICE_EXEC_RELOAD]; } -static NameActiveState service_active_state(Name *n) { - assert(n); +static UnitActiveState service_active_state(Unit *u) { + assert(u); - return state_table[SERVICE(n)->state]; + return state_translation_table[SERVICE(u)->state]; } static int main_pid_good(Service *s) { @@ -727,14 +771,14 @@ static bool control_pid_good(Service *s) { return s->control_pid > 0; } -static void service_sigchld_event(Name *n, pid_t pid, int code, int status) { - Service *s = SERVICE(n); +static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { + Service *s = SERVICE(u); bool success; assert(s); assert(pid >= 0); - success = code == CLD_EXITED || status == 0; + success = code == CLD_EXITED && status == 0; s->failure = s->failure || !success; if (s->main_pid == pid) { @@ -747,7 +791,7 @@ static void service_sigchld_event(Name *n, pid_t pid, int code, int status) { s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status; } - log_debug("%s: main process exited, code=%s status=%i", name_id(n), sigchld_code(code), status); + log_debug("%s: main process exited, code=%s status=%i", unit_id(u), sigchld_code(code), status); /* The service exited, so the service is officially * gone. */ @@ -784,7 +828,7 @@ static void service_sigchld_event(Name *n, pid_t pid, int code, int status) { exec_status_fill(&s->control_command->exec_status, pid, code, status); s->control_pid = 0; - log_debug("%s: control process exited, code=%s status=%i", name_id(n), sigchld_code(code), status); + log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code(code), status); /* If we are shutting things down anyway we * don't care about failing commands. */ @@ -801,6 +845,8 @@ static void service_sigchld_event(Name *n, pid_t pid, int code, int status) { /* No further commands for this step, so let's * figure out what to do next */ + log_debug("%s got final SIGCHLD for state %s", unit_id(u), state_string_table[s->state]); + switch (s->state) { case SERVICE_START_PRE: @@ -840,7 +886,7 @@ static void service_sigchld_event(Name *n, pid_t pid, int code, int status) { * executed. */ if ((r = service_load_pid_file(s)) < 0) - log_warning("%s: failed to load PID file %s: %s", name_id(NAME(s)), s->pid_file, strerror(-r)); + log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s)), s->pid_file, strerror(-r)); } /* Fall through */ @@ -888,13 +934,13 @@ static void service_sigchld_event(Name *n, pid_t pid, int code, int status) { assert_not_reached("Got SIGCHLD for unkown PID"); } -static void service_timer_event(Name *n, int id, uint64_t elapsed) { - Service *s = SERVICE(n); +static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) { + Service *s = SERVICE(u); assert(s); assert(elapsed == 1); - assert(s->timer_id == id); + assert(w == &s->timer_watch); switch (s->state) { @@ -902,17 +948,17 @@ static void service_timer_event(Name *n, int id, uint64_t elapsed) { case SERVICE_START: case SERVICE_START_POST: case SERVICE_RELOAD: - log_warning("%s operation timed out. Stopping.", name_id(n)); + log_warning("%s operation timed out. Stopping.", unit_id(u)); service_enter_stop(s, false); break; case SERVICE_STOP: - log_warning("%s stopping timed out. Terminating.", name_id(n)); + log_warning("%s stopping timed out. Terminating.", unit_id(u)); service_enter_signal(s, SERVICE_STOP_SIGTERM, false); break; case SERVICE_STOP_SIGTERM: - log_warning("%s stopping timed out. Killing.", name_id(n)); + log_warning("%s stopping timed out. Killing.", unit_id(u)); service_enter_signal(s, SERVICE_STOP_SIGKILL, false); break; @@ -921,27 +967,27 @@ static void service_timer_event(Name *n, int id, uint64_t elapsed) { * Must be something we cannot kill, so let's just be * weirded out and continue */ - log_warning("%s still around after SIGKILL. Ignoring.", name_id(n)); + log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u)); service_enter_stop_post(s, false); break; case SERVICE_STOP_POST: - log_warning("%s stopping timed out (2). Terminating.", name_id(n)); + log_warning("%s stopping timed out (2). Terminating.", unit_id(u)); service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); break; case SERVICE_FINAL_SIGTERM: - log_warning("%s stopping timed out (2). Killing.", name_id(n)); + log_warning("%s stopping timed out (2). Killing.", unit_id(u)); service_enter_signal(s, SERVICE_FINAL_SIGKILL, false); break; case SERVICE_FINAL_SIGKILL: - log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", name_id(n)); + log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u)); service_enter_dead(s, false, true); break; case SERVICE_AUTO_RESTART: - log_debug("%s holdoff time over, scheduling restart.", name_id(n)); + log_debug("%s holdoff time over, scheduling restart.", unit_id(u)); service_enter_restart(s); break; @@ -950,7 +996,7 @@ static void service_timer_event(Name *n, int id, uint64_t elapsed) { } } -const NameVTable service_vtable = { +const UnitVTable service_vtable = { .suffix = ".service", .init = service_init,