X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=service.c;h=0a70bb0a7c518168c6d7d01375b0930c10fe34e9;hp=1ee0f05d3e7e85994b93e40088e434077aa955f2;hb=ba8c0bef6bbb3f8cb92e0bf381fbe5a84584506f;hpb=4a21885b43c3632db95d6d1d9ba327ccff705b7b diff --git a/service.c b/service.c index 1ee0f05d3..0a70bb0a7 100644 --- a/service.c +++ b/service.c @@ -36,22 +36,23 @@ #define LINE_MAX 4096 static const char * const rcnd_table[] = { - "../rc0.d", SPECIAL_RUNLEVEL0_TARGET, - "../rc1.d", SPECIAL_RUNLEVEL1_TARGET, - "../rc2.d", SPECIAL_RUNLEVEL2_TARGET, - "../rc3.d", SPECIAL_RUNLEVEL3_TARGET, - "../rc4.d", SPECIAL_RUNLEVEL4_TARGET, - "../rc5.d", SPECIAL_RUNLEVEL5_TARGET, - "../rc6.d", SPECIAL_RUNLEVEL6_TARGET + "/rc0.d", SPECIAL_RUNLEVEL0_TARGET, + "/rc1.d", SPECIAL_RUNLEVEL1_TARGET, + "/rc2.d", SPECIAL_RUNLEVEL2_TARGET, + "/rc3.d", SPECIAL_RUNLEVEL3_TARGET, + "/rc4.d", SPECIAL_RUNLEVEL4_TARGET, + "/rc5.d", SPECIAL_RUNLEVEL5_TARGET, + "/rc6.d", SPECIAL_RUNLEVEL6_TARGET, + "/boot.d", SPECIAL_BASIC_TARGET }; - 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_EXITED] = UNIT_ACTIVE, [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING, [SERVICE_STOP] = UNIT_DEACTIVATING, [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, @@ -63,6 +64,26 @@ static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING, }; +static void service_unwatch_control_pid(Service *s) { + assert(s); + + if (s->control_pid <= 0) + return; + + unit_unwatch_pid(UNIT(s), s->control_pid); + s->control_pid = 0; +} + +static void service_unwatch_main_pid(Service *s) { + assert(s); + + if (s->main_pid <= 0) + return; + + unit_unwatch_pid(UNIT(s), s->main_pid); + s->main_pid = 0; +} + static void service_done(Unit *u) { Service *s = SERVICE(u); @@ -74,21 +95,17 @@ static void service_done(Unit *u) { free(s->sysv_path); s->sysv_path = NULL; + free(s->sysv_runlevels); + s->sysv_runlevels = NULL; + exec_context_done(&s->exec_context); - exec_command_free_array(s->exec_command, _SERVICE_EXEC_MAX); + exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); s->control_command = NULL; /* This will leak a process, but at least no memory or any of * our resources */ - if (s->main_pid > 0) { - unit_unwatch_pid(u, s->main_pid); - s->main_pid = 0; - } - - if (s->control_pid > 0) { - unit_unwatch_pid(u, s->control_pid); - s->control_pid = 0; - } + service_unwatch_main_pid(s); + service_unwatch_control_pid(s); unit_unwatch_timer(u, &s->timer_watch); } @@ -154,7 +171,10 @@ static int sysv_chkconfig_order(Service *s) { if (t->sysv_start_priority < 0) continue; - if (s->sysv_has_lsb && t->sysv_has_lsb) + /* If both units have modern headers we don't care + * about the priorities */ + if ((!s->sysv_path || s->sysv_has_lsb) && + (!t->sysv_path || t->sysv_has_lsb)) continue; if (t->sysv_start_priority < s->sysv_start_priority) @@ -218,7 +238,7 @@ static int priority_from_rcd(Service *s, const char *init_script) { char **p; unsigned i; - STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) + STRV_FOREACH(p, UNIT(s)->meta.manager->sysvrcnd_path) for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) { char *path; DIR *d; @@ -274,7 +294,7 @@ static int priority_from_rcd(Service *s, const char *init_script) { return 0; } -static int service_load_sysv_path(Service *s, const char *path, UnitLoadState *new_state) { +static int service_load_sysv_path(Service *s, const char *path) { FILE *f; Unit *u; unsigned line = 0; @@ -288,7 +308,6 @@ static int service_load_sysv_path(Service *s, const char *path, UnitLoadState *n assert(s); assert(path); - assert(new_state); u = UNIT(s); @@ -344,22 +363,38 @@ static int service_load_sysv_path(Service *s, const char *path, UnitLoadState *n if (startswith(t, "chkconfig:")) { int start_priority; + char runlevels[16], *k; state = NORMAL; - if (sscanf(t+10, "%*15s %i %*i", - &start_priority) != 1) { + if (sscanf(t+10, "%15s %i %*i", + runlevels, + &start_priority) != 2) { log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line); continue; } - if (start_priority < 0 || start_priority > 99) { + if (start_priority < 0 || start_priority > 99) log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line); - continue; + else + s->sysv_start_priority = start_priority; + + char_array_0(runlevels); + k = delete_chars(runlevels, WHITESPACE "-"); + + if (k[0]) { + char *d; + + if (!(d = strdup(k))) { + r = -ENOMEM; + goto finish; + } + + free(s->sysv_runlevels); + s->sysv_runlevels = d; } - s->sysv_start_priority = start_priority; } else if (startswith(t, "description:")) { @@ -484,20 +519,28 @@ static int service_load_sysv_path(Service *s, const char *path, UnitLoadState *n if (r == 0) continue; - if (!(r = unit_add_dependency_by_name(u, UNIT_AFTER, m)) < 0) { - free(m); - goto finish; - } - - r = unit_add_dependency_by_name( - u, - startswith(t, "Required-Start:") ? UNIT_REQUIRES : UNIT_WANTS, - m); + r = unit_add_dependency_by_name(u, UNIT_AFTER, m); free(m); if (r < 0) goto finish; } + } else if (startswith(t, "Default-Start:")) { + char *k, *d; + + state = LSB; + + k = delete_chars(t+14, WHITESPACE "-"); + + if (k[0] != 0) { + if (!(d = strdup(k))) { + r = -ENOMEM; + goto finish; + } + + free(s->sysv_runlevels); + s->sysv_runlevels = d; + } } else if (startswith(t, "Description:")) { char *d; @@ -512,7 +555,8 @@ static int service_load_sysv_path(Service *s, const char *path, UnitLoadState *n free(u->meta.description); u->meta.description = d; - } else if (startswith(t, "Short-Description:") && !u->meta.description) { + } else if (startswith(t, "Short-Description:") && + !u->meta.description) { char *d; /* We use the short description only @@ -525,7 +569,6 @@ static int service_load_sysv_path(Service *s, const char *path, UnitLoadState *n goto finish; } - free(u->meta.description); u->meta.description = d; } else if (state == LSB_DESCRIPTION) { @@ -565,11 +608,26 @@ static int service_load_sysv_path(Service *s, const char *path, UnitLoadState *n if ((r = sysv_exec_commands(s)) < 0) goto finish; - if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_SERVICE)) < 0 || - (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_SERVICE)) < 0) - goto finish; + if (!s->sysv_runlevels || chars_intersect("12345", s->sysv_runlevels)) { + /* If there a runlevels configured for this service + * but none of the standard ones, then we assume this + * is some special kind of service (which might be + * needed for early boot) and don't create any links + * to it. */ + + if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET)) < 0 || + (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET)) < 0) + goto finish; + } + + /* Special setting for all SysV services */ + s->valid_no_process = true; - *new_state = UNIT_LOADED; + /* Don't timeout special services during boot (like fsck) */ + if (s->sysv_runlevels && !chars_intersect("12345", s->sysv_runlevels)) + s->timeout_usec = -1; + + u->meta.load_state = UNIT_LOADED; r = 0; finish: @@ -580,7 +638,7 @@ finish: return r; } -static int service_load_sysv_name(Service *s, const char *name, UnitLoadState *new_state) { +static int service_load_sysv_name(Service *s, const char *name) { char **p; assert(s); @@ -596,26 +654,25 @@ static int service_load_sysv_name(Service *s, const char *name, UnitLoadState *n assert(endswith(path, ".service")); path[strlen(path)-8] = 0; - r = service_load_sysv_path(s, path, new_state); + r = service_load_sysv_path(s, path); free(path); if (r < 0) return r; - if (*new_state != UNIT_STUB) + if ((UNIT(s)->meta.load_state != UNIT_STUB)) break; } return 0; } -static int service_load_sysv(Service *s, UnitLoadState *new_state) { +static int service_load_sysv(Service *s) { const char *t; Iterator i; int r; assert(s); - assert(new_state); /* Load service data from SysV init scripts, preferably with * LSB headers ... */ @@ -624,31 +681,29 @@ static int service_load_sysv(Service *s, UnitLoadState *new_state) { return 0; if ((t = unit_id(UNIT(s)))) - if ((r = service_load_sysv_name(s, t, new_state)) < 0) + if ((r = service_load_sysv_name(s, t)) < 0) return r; - if (*new_state == UNIT_STUB) + if (UNIT(s)->meta.load_state == UNIT_STUB) SET_FOREACH(t, UNIT(s)->meta.names, i) { - if ((r == service_load_sysv_name(s, t, new_state)) < 0) + if (t == unit_id(UNIT(s))) + continue; + + if ((r == service_load_sysv_name(s, t)) < 0) return r; - if (*new_state != UNIT_STUB) + if (UNIT(s)->meta.load_state != UNIT_STUB) break; } return 0; } -static int service_init(Unit *u, UnitLoadState *new_state) { - int r; +static void service_init(Unit *u) { Service *s = SERVICE(u); - assert(s); - assert(new_state); - assert(*new_state == UNIT_STUB); - - /* First, reset everything to the defaults, in case this is a - * reload */ + assert(u); + assert(u->meta.load_state == UNIT_STUB); s->type = 0; s->restart = 0; @@ -665,22 +720,47 @@ static int service_init(Unit *u, UnitLoadState *new_state) { s->sysv_start_priority = -1; s->permissions_start_only = false; s->root_directory_start_only = false; - + s->valid_no_process = false; + s->kill_mode = 0; s->sysv_has_lsb = false; + s->main_pid = s->control_pid = 0; + s->main_pid_known = false; + s->failure = false; RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5); +} + +static int service_verify(Service *s) { + assert(s); + + if (UNIT(s)->meta.load_state != UNIT_LOADED) + return 0; + + if (!s->exec_command[SERVICE_EXEC_START]) { + log_error("%s lacks ExecStart setting. Refusing.", unit_id(UNIT(s))); + return -EINVAL; + } + + return 0; +} + +static int service_load(Unit *u) { + int r; + Service *s = SERVICE(u); + + assert(s); /* Load a .service file */ - if ((r = unit_load_fragment(u, new_state)) < 0) + if ((r = unit_load_fragment(u)) < 0) return r; /* Load a classic init script as a fallback, if we couldn't find anything */ - if (*new_state == UNIT_STUB) - if ((r = service_load_sysv(s, new_state)) < 0) + if (u->meta.load_state == UNIT_STUB) + if ((r = service_load_sysv(s)) < 0) return r; /* Still nothing found? Then let's give up */ - if (*new_state == UNIT_STUB) + if (u->meta.load_state == UNIT_STUB) return -ENOENT; /* We were able to load something, then let's add in the @@ -689,7 +769,7 @@ static int service_init(Unit *u, UnitLoadState *new_state) { return r; /* This is a new unit? Then let's add in some extras */ - if (*new_state == UNIT_LOADED) { + if (u->meta.load_state == UNIT_LOADED) { if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0) return r; @@ -700,7 +780,7 @@ static int service_init(Unit *u, UnitLoadState *new_state) { return r; } - return 0; + return service_verify(s); } static void service_dump(Unit *u, FILE *f, const char *prefix) { @@ -720,13 +800,25 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) { "%sPermissionsStartOnly: %s\n" "%sRootDirectoryStartOnly: %s\n" "%sValidNoProcess: %s\n" + "%sKillMode: %s\n" "%sType: %s\n", prefix, service_state_to_string(s->state), prefix, yes_no(s->permissions_start_only), prefix, yes_no(s->root_directory_start_only), prefix, yes_no(s->valid_no_process), + prefix, kill_mode_to_string(s->kill_mode), prefix, service_type_to_string(s->type)); + if (s->control_pid > 0) + fprintf(f, + "%sControl PID: %llu\n", + prefix, (unsigned long long) s->control_pid); + + if (s->main_pid > 0) + fprintf(f, + "%sMain PID: %llu\n", + prefix, (unsigned long long) s->main_pid); + if (s->pid_file) fprintf(f, "%sPIDFile: %s\n", @@ -734,7 +826,7 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) { exec_context_dump(&s->exec_context, f, prefix); - for (c = 0; c < _SERVICE_EXEC_MAX; c++) { + for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { if (!s->exec_command[c]) continue; @@ -757,6 +849,9 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) { "%sSysVStartPriority: %i\n", prefix, s->sysv_start_priority); + if (s->sysv_runlevels) + fprintf(f, "%sSysVRunLevels: %s\n", + prefix, s->sysv_runlevels); free(p2); } @@ -771,6 +866,8 @@ static int service_load_pid_file(Service *s) { if (s->main_pid_known) return 0; + assert(s->main_pid <= 0); + if (!s->pid_file) return -ENOENT; @@ -785,7 +882,17 @@ static int service_load_pid_file(Service *s) { if ((unsigned long) (pid_t) p != p) return -ERANGE; - s->main_pid = p; + if (kill((pid_t) p, 0) < 0 && errno != EPERM) { + log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.", + (unsigned long long) p, s->pid_file); + return -ESRCH; + } + + if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0) + /* FIXME: we need to do something here */ + return r; + + s->main_pid = (pid_t) p; s->main_pid_known = true; return 0; @@ -837,7 +944,7 @@ fail: } -static int service_notify_sockets(Service *s) { +static int service_notify_sockets_dead(Service *s) { Iterator i; Set *set; Socket *sock; @@ -885,10 +992,7 @@ 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) { - unit_unwatch_pid(UNIT(s), s->main_pid); - s->main_pid = 0; - } + service_unwatch_main_pid(s); if (state != SERVICE_START_PRE && state != SERVICE_START && @@ -899,19 +1003,10 @@ static void service_set_state(Service *s, ServiceState state) { state != SERVICE_STOP_SIGKILL && state != SERVICE_STOP_POST && state != SERVICE_FINAL_SIGTERM && - state != SERVICE_FINAL_SIGKILL) - if (s->control_pid > 0) { - unit_unwatch_pid(UNIT(s), s->control_pid); - s->control_pid = 0; - } - - if (state != SERVICE_START_PRE && - state != SERVICE_START && - state != SERVICE_START_POST && - state != SERVICE_RELOAD && - state != SERVICE_STOP && - state != SERVICE_STOP_POST) + state != SERVICE_FINAL_SIGKILL) { + service_unwatch_control_pid(s); s->control_command = NULL; + } if (state == SERVICE_DEAD || state == SERVICE_STOP || @@ -922,9 +1017,10 @@ static void service_set_state(Service *s, ServiceState state) { state == SERVICE_FINAL_SIGKILL || state == SERVICE_MAINTAINANCE || state == SERVICE_AUTO_RESTART) - service_notify_sockets(s); + service_notify_sockets_dead(s); - log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state)); + if (old_state != state) + log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state)); unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]); } @@ -1023,6 +1119,7 @@ static int service_spawn( fds, n_fds, apply_permissions, apply_chroot, + UNIT(s)->meta.manager->confirm_spawn, UNIT(s)->meta.cgroup_bondings, &pid)) < 0) goto fail; @@ -1045,6 +1142,41 @@ fail: return r; } +static int main_pid_good(Service *s) { + assert(s); + + /* Returns 0 if the pid is dead, 1 if it is good, -1 if we + * don't know */ + + /* If we know the pid file, then lets just check if it is + * still valid */ + if (s->main_pid_known) + return s->main_pid > 0; + + /* We don't know the pid */ + return -EAGAIN; +} + +static int control_pid_good(Service *s) { + assert(s); + + return s->control_pid > 0; +} + +static int cgroup_good(Service *s) { + int r; + + assert(s); + + if (s->valid_no_process) + return -EAGAIN; + + if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0) + return r; + + return !r; +} + static void service_enter_dead(Service *s, bool success, bool allow_restart) { int r; assert(s); @@ -1079,7 +1211,9 @@ static void service_enter_stop_post(Service *s, bool success) { if (!success) s->failure = true; - if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) + service_unwatch_control_pid(s); + + if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) { if ((r = service_spawn(s, s->control_command, true, @@ -1090,15 +1224,14 @@ static void service_enter_stop_post(Service *s, bool success) { goto fail; - service_set_state(s, SERVICE_STOP_POST); - - if (!s->control_command) - service_enter_dead(s, true, true); + service_set_state(s, SERVICE_STOP_POST); + } else + service_enter_signal(s, SERVICE_FINAL_SIGTERM, true); return; fail: - log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r)); + log_warning("%s failed to run stop-post executable: %s", unit_id(UNIT(s)), strerror(-r)); service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); } @@ -1111,33 +1244,48 @@ static void service_enter_signal(Service *s, ServiceState state, bool success) { if (!success) s->failure = true; - if (s->main_pid > 0 || s->control_pid > 0) { - int sig; + if (s->kill_mode != KILL_NONE) { + int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL; - sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL; + if (s->kill_mode == KILL_CONTROL_GROUP) { - r = 0; - if (s->main_pid > 0) { - if (kill(s->main_pid, sig) < 0 && errno != ESRCH) - r = -errno; - else + if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) { + if (r != -EAGAIN && r != -ESRCH) + goto fail; + } else sent = true; } - if (s->control_pid > 0) { - if (kill(s->control_pid, sig) < 0 && errno != ESRCH) - r = -errno; - else - sent = true; - } + if (!sent) { + r = 0; - if (r < 0) - goto fail; + if (s->main_pid > 0) { + if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH) + r = -errno; + else + sent = true; + } + + if (s->control_pid > 0) { + if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH) + r = -errno; + else + sent = true; + } + + if (r < 0) + goto fail; + } } - service_set_state(s, state); + if (sent) { + if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) + goto fail; - if (s->main_pid <= 0 && s->control_pid <= 0) + service_set_state(s, state); + } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL) + service_enter_stop_post(s, true); + else service_enter_dead(s, true, true); return; @@ -1145,10 +1293,7 @@ static void service_enter_signal(Service *s, ServiceState state, bool success) { fail: log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r)); - if (sent) { - s->failure = true; - service_set_state(s, state); - } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL) + if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL) service_enter_stop_post(s, false); else service_enter_dead(s, false, true); @@ -1161,7 +1306,9 @@ static void service_enter_stop(Service *s, bool success) { if (!success) s->failure = true; - if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) + service_unwatch_control_pid(s); + + if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) { if ((r = service_spawn(s, s->control_command, true, @@ -1171,9 +1318,8 @@ static void service_enter_stop(Service *s, bool success) { &s->control_pid)) < 0) goto fail; - service_set_state(s, SERVICE_STOP); - - if (!s->control_command) + service_set_state(s, SERVICE_STOP); + } else service_enter_signal(s, SERVICE_STOP_SIGTERM, true); return; @@ -1183,11 +1329,27 @@ fail: service_enter_signal(s, SERVICE_STOP_SIGTERM, false); } +static void service_enter_running(Service *s, bool success) { + assert(s); + + if (!success) + s->failure = true; + + if (main_pid_good(s) != 0 && cgroup_good(s) != 0) + service_set_state(s, SERVICE_RUNNING); + else if (s->valid_no_process) + service_set_state(s, SERVICE_EXITED); + else + service_enter_stop(s, true); +} + static void service_enter_start_post(Service *s) { int r; assert(s); - if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) + service_unwatch_control_pid(s); + + if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) { if ((r = service_spawn(s, s->control_command, true, @@ -1198,10 +1360,9 @@ static void service_enter_start_post(Service *s) { goto fail; - service_set_state(s, SERVICE_START_POST); - - if (!s->control_command) - service_set_state(s, SERVICE_RUNNING); + service_set_state(s, SERVICE_START_POST); + } else + service_enter_running(s, true); return; @@ -1219,6 +1380,11 @@ static void service_enter_start(Service *s) { assert(s->exec_command[SERVICE_EXEC_START]); assert(!s->exec_command[SERVICE_EXEC_START]->command_next); + if (s->type == SERVICE_FORKING) + service_unwatch_control_pid(s); + else + service_unwatch_main_pid(s); + if ((r = service_spawn(s, s->exec_command[SERVICE_EXEC_START], s->type == SERVICE_FORKING, @@ -1228,14 +1394,13 @@ static void service_enter_start(Service *s) { &pid)) < 0) goto fail; - service_set_state(s, SERVICE_START); - if (s->type == SERVICE_SIMPLE) { /* For simple services we immediately start * the START_POST binaries. */ s->main_pid = pid; s->main_pid_known = true; + service_enter_start_post(s); } else if (s->type == SERVICE_FORKING) { @@ -1244,14 +1409,20 @@ static void service_enter_start(Service *s) { * process exited. */ s->control_pid = pid; + s->control_command = s->exec_command[SERVICE_EXEC_START]; + service_set_state(s, SERVICE_START); + } else if (s->type == SERVICE_FINISH) { /* For finishing services we wait until the start * process exited, too, but it is our main process. */ s->main_pid = pid; + s->main_pid_known = true; + s->control_command = s->exec_command[SERVICE_EXEC_START]; + service_set_state(s, SERVICE_START); } else assert_not_reached("Unknown service type"); @@ -1259,7 +1430,7 @@ static void service_enter_start(Service *s) { fail: log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r)); - service_enter_stop(s, false); + service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); } static void service_enter_start_pre(Service *s) { @@ -1267,7 +1438,9 @@ static void service_enter_start_pre(Service *s) { assert(s); - if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) + service_unwatch_control_pid(s); + + if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) { if ((r = service_spawn(s, s->control_command, true, @@ -1277,9 +1450,8 @@ static void service_enter_start_pre(Service *s) { &s->control_pid)) < 0) goto fail; - service_set_state(s, SERVICE_START_PRE); - - if (!s->control_command) + service_set_state(s, SERVICE_START_PRE); + } else service_enter_start(s); return; @@ -1293,11 +1465,12 @@ static void service_enter_restart(Service *s) { int r; assert(s); + service_enter_dead(s, true, false); + 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.", unit_id(UNIT(s))); - service_enter_dead(s, true, false); return; fail: @@ -1311,7 +1484,9 @@ static void service_enter_reload(Service *s) { assert(s); - if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) + service_unwatch_control_pid(s); + + if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) { if ((r = service_spawn(s, s->control_command, true, @@ -1321,10 +1496,9 @@ static void service_enter_reload(Service *s) { &s->control_pid)) < 0) goto fail; - service_set_state(s, SERVICE_RELOAD); - - if (!s->control_command) - service_set_state(s, SERVICE_RUNNING); + service_set_state(s, SERVICE_RELOAD); + } else + service_enter_running(s, true); return; @@ -1345,6 +1519,8 @@ static void service_run_next(Service *s, bool success) { s->control_command = s->control_command->command_next; + service_unwatch_control_pid(s); + if ((r = service_spawn(s, s->control_command, true, @@ -1359,8 +1535,10 @@ static void service_run_next(Service *s, bool success) { fail: 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); + if (s->state == SERVICE_START_PRE) + service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); + else if (s->state == SERVICE_STOP) + service_enter_signal(s, SERVICE_STOP_SIGTERM, false); else if (s->state == SERVICE_STOP_POST) service_enter_dead(s, false, true); else @@ -1408,18 +1586,28 @@ static int service_stop(Unit *u) { assert(s); + /* Cannot do this now */ if (s->state == SERVICE_START_PRE || s->state == SERVICE_START || s->state == SERVICE_START_POST || s->state == SERVICE_RELOAD) return -EAGAIN; + /* Already on it */ + if (s->state == SERVICE_STOP || + s->state == SERVICE_STOP_SIGTERM || + s->state == SERVICE_STOP_SIGKILL || + s->state == SERVICE_STOP_POST || + s->state == SERVICE_FINAL_SIGTERM || + s->state == SERVICE_FINAL_SIGKILL) + return 0; + if (s->state == SERVICE_AUTO_RESTART) { service_set_state(s, SERVICE_DEAD); return 0; } - assert(s->state == SERVICE_RUNNING); + assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED); service_enter_stop(s, true); return 0; @@ -1430,7 +1618,7 @@ static int service_reload(Unit *u) { assert(s); - assert(s->state == SERVICE_RUNNING); + assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED); service_enter_reload(s); return 0; @@ -1450,36 +1638,6 @@ static UnitActiveState service_active_state(Unit *u) { return state_translation_table[SERVICE(u)->state]; } -static int main_pid_good(Service *s) { - assert(s); - - /* Returns 0 if the pid is dead, 1 if it is good, -1 if we - * don't know */ - - /* If we know the pid file, then lets just check if it is - * still valid */ - if (s->main_pid_known) - return s->main_pid > 0; - - /* We don't know the pid */ - return -EAGAIN; -} - -static bool control_pid_good(Service *s) { - assert(s); - - return s->control_pid > 0; -} - -static int cgroup_good(Service *s) { - assert(s); - - if (s->valid_no_process) - return -EAGAIN; - - return cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings); -} - static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { Service *s = SERVICE(u); bool success; @@ -1500,7 +1658,7 @@ static void service_sigchld_event(Unit *u, 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", unit_id(u), sigchld_code_to_string(code), status); + log_debug("%s: main process exited, code=%s, status=%i", unit_id(u), sigchld_code_to_string(code), status); /* The service exited, so the service is officially * gone. */ @@ -1521,11 +1679,11 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { if (success) service_enter_start_post(s); else - service_enter_stop(s, false); + service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); break; case SERVICE_RUNNING: - service_enter_stop(s, success); + service_enter_running(s, success); break; case SERVICE_STOP_SIGTERM: @@ -1552,15 +1710,15 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { /* If we are shutting things down anyway we * don't care about failing commands. */ - if (s->control_command->command_next && - (success || (s->state == SERVICE_STOP || s->state == SERVICE_STOP_POST))) + if (s->control_command->command_next && success) { /* There is another command to * * execute, so let's do that. */ + log_debug("%s running next command for state %s", unit_id(u), service_state_to_string(s->state)); service_run_next(s, success); - else { + } else { /* No further commands for this step, so let's * figure out what to do next */ @@ -1572,7 +1730,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { if (success) service_enter_start(s); else - service_enter_stop(s, false); + service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); break; case SERVICE_START: @@ -1591,7 +1749,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { service_enter_start_post(s); } else - service_enter_stop(s, false); + service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); break; @@ -1611,22 +1769,15 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { /* Fall through */ case SERVICE_RELOAD: - if (success) { - if (main_pid_good(s) != 0 && cgroup_good(s) != 0) - service_set_state(s, SERVICE_RUNNING); - else - service_enter_stop(s, true); - } else + if (success) + service_enter_running(s, true); + else service_enter_stop(s, false); break; case SERVICE_STOP: - if (main_pid_good(s) > 0) - /* Still not dead and we know the PID? Let's go hunting. */ - service_enter_signal(s, SERVICE_STOP_SIGTERM, success); - else - service_enter_stop_post(s, success); + service_enter_signal(s, SERVICE_STOP_SIGTERM, success); break; case SERVICE_STOP_SIGTERM: @@ -1665,6 +1816,10 @@ static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) { case SERVICE_START_PRE: case SERVICE_START: + log_warning("%s operation timed out. Terminating.", unit_id(u)); + service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); + break; + case SERVICE_START_POST: case SERVICE_RELOAD: log_warning("%s operation timed out. Stopping.", unit_id(u)); @@ -1731,10 +1886,7 @@ static void service_cgroup_notify_event(Unit *u) { * SIGCHLD for. */ case SERVICE_RUNNING: - - if (!s->valid_no_process && main_pid_good(s) <= 0) - service_enter_stop(s, true); - + service_enter_running(s, true); break; default: @@ -1751,7 +1903,7 @@ static int service_enumerate(Manager *m) { assert(m); - STRV_FOREACH(p, m->sysvinit_path) + STRV_FOREACH(p, m->sysvrcnd_path) for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) { struct dirent *de; @@ -1856,6 +2008,7 @@ static const char* const service_state_table[_SERVICE_STATE_MAX] = { [SERVICE_START] = "start", [SERVICE_START_POST] = "start-post", [SERVICE_RUNNING] = "running", + [SERVICE_EXITED] = "exited", [SERVICE_RELOAD] = "reload", [SERVICE_STOP] = "stop", [SERVICE_STOP_SIGTERM] = "stop-sigterm", @@ -1872,7 +2025,7 @@ DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState); static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { [SERVICE_ONCE] = "once", [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success", - [SERVICE_RESTART_ALWAYS] = "restart-on-failure", + [SERVICE_RESTART_ALWAYS] = "restart-always", }; DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); @@ -1885,7 +2038,7 @@ static const char* const service_type_table[_SERVICE_TYPE_MAX] = { DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); -static const char* const service_exec_command_table[_SERVICE_EXEC_MAX] = { +static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { [SERVICE_EXEC_START_PRE] = "ExecStartPre", [SERVICE_EXEC_START] = "ExecStart", [SERVICE_EXEC_START_POST] = "ExecStartPost", @@ -1900,6 +2053,7 @@ const UnitVTable service_vtable = { .suffix = ".service", .init = service_init, + .load = service_load, .done = service_done, .dump = service_dump,