X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fcore%2Fservice.c;h=3f6595c5c820fd184a84e13ff4af4eebaec913d9;hp=d949f7a3632709fa9fc42228c8e472a1d723becb;hb=e44da745d19b9e02e67e32ea82c3bad86175120c;hpb=68db7a3bd9b2f8640c7297382b6d20eb995f7e1e diff --git a/src/core/service.c b/src/core/service.c index d949f7a36..3f6595c5c 100644 --- a/src/core/service.c +++ b/src/core/service.c @@ -23,8 +23,8 @@ #include #include #include -#include +#include "async.h" #include "manager.h" #include "unit.h" #include "service.h" @@ -45,41 +45,7 @@ #include "fileio.h" #include "bus-error.h" #include "bus-util.h" - -#ifdef HAVE_SYSV_COMPAT - -#define DEFAULT_SYSV_TIMEOUT_USEC (5*USEC_PER_MINUTE) - -typedef enum RunlevelType { - RUNLEVEL_UP, - RUNLEVEL_DOWN -} RunlevelType; - -static const struct { - const char *path; - const char *target; - const RunlevelType type; -} rcnd_table[] = { - /* Standard SysV runlevels for start-up */ - { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP }, - { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP }, - { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP }, - { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP }, - { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP }, - - /* Standard SysV runlevels for shutdown */ - { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN }, - { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN } - - /* Note that the order here matters, as we read the - directories in this order, and we want to make sure that - sysv_start_priority is known when we first load the - unit. And that value we only know from S links. Hence - UP must be read before DOWN */ -}; - -#define RUNLEVELS_UP "12345" -#endif +#include "bus-kernel.h" static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { [SERVICE_DEAD] = UNIT_INACTIVE, @@ -124,6 +90,7 @@ static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *us static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata); static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); +static void service_enter_reload_by_notify(Service *s); static void service_init(Unit *u) { Service *s = SERVICE(u); @@ -135,21 +102,11 @@ static void service_init(Unit *u) { s->timeout_stop_usec = u->manager->default_timeout_stop_usec; s->restart_usec = u->manager->default_restart_usec; s->type = _SERVICE_TYPE_INVALID; - -#ifdef HAVE_SYSV_COMPAT - s->sysv_start_priority = -1; - s->sysv_start_priority_from_rcnd = -1; -#endif s->socket_fd = -1; + s->bus_endpoint_fd = -1; s->guess_main_pid = true; - exec_context_init(&s->exec_context); - kill_context_init(&s->kill_context); - cgroup_context_init(&s->cgroup_context); - - RATELIMIT_INIT(s->start_limit, - u->manager->default_start_limit_interval, - u->manager->default_start_limit_burst); + RATELIMIT_INIT(s->start_limit, u->manager->default_start_limit_interval, u->manager->default_start_limit_burst); s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; } @@ -178,8 +135,7 @@ static void service_unwatch_pid_file(Service *s) { if (!s->pid_file_pathspec) return; - log_debug_unit(UNIT(s)->id, "Stopping watch for %s's PID file %s", - UNIT(s)->id, s->pid_file_pathspec->path); + log_debug_unit(UNIT(s)->id, "Stopping watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path); path_spec_unwatch(s->pid_file_pathspec); path_spec_done(s->pid_file_pathspec); free(s->pid_file_pathspec); @@ -209,10 +165,7 @@ static int service_set_main_pid(Service *s, pid_t pid) { s->main_pid_known = true; if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) { - log_warning_unit(UNIT(s)->id, - "%s: Supervising process "PID_FMT" which is not our child. We'll most likely not notice when it exits.", - UNIT(s)->id, pid); - + log_warning_unit(UNIT(s)->id, "%s: Supervising process "PID_FMT" which is not our child. We'll most likely not notice when it exits.", UNIT(s)->id, pid); s->main_pid_alien = true; } else s->main_pid_alien = false; @@ -223,11 +176,7 @@ static int service_set_main_pid(Service *s, pid_t pid) { static void service_close_socket_fd(Service *s) { assert(s); - if (s->socket_fd < 0) - return; - - close_nointr_nofail(s->socket_fd); - s->socket_fd = -1; + s->socket_fd = asynchronous_close(s->socket_fd); } static void service_connection_unref(Service *s) { @@ -264,7 +213,12 @@ static void service_start_watchdog(Service *s) { r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT); } else { - r = sd_event_add_monotonic(UNIT(s)->manager->event, s->watchdog_timestamp.monotonic + s->watchdog_usec, 0, service_dispatch_watchdog, s, &s->watchdog_event_source); + r = sd_event_add_time( + UNIT(s)->manager->event, + &s->watchdog_event_source, + CLOCK_MONOTONIC, + s->watchdog_timestamp.monotonic + s->watchdog_usec, 0, + service_dispatch_watchdog, s); if (r < 0) { log_warning_unit(UNIT(s)->id, "%s failed to add watchdog timer: %s", UNIT(s)->id, strerror(-r)); return; @@ -294,30 +248,20 @@ static void service_done(Unit *u) { free(s->pid_file); s->pid_file = NULL; -#ifdef HAVE_SYSV_COMPAT - free(s->sysv_runlevels); - s->sysv_runlevels = NULL; -#endif - free(s->status_text); s->status_text = NULL; - cgroup_context_done(&s->cgroup_context); - exec_context_done(&s->exec_context); + free(s->reboot_arg); + s->reboot_arg = NULL; + s->exec_runtime = exec_runtime_unref(s->exec_runtime); exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); s->control_command = NULL; s->main_command = NULL; - set_free(s->restart_ignore_status.code); - s->restart_ignore_status.code = NULL; - set_free(s->restart_ignore_status.signal); - s->restart_ignore_status.signal = NULL; - - set_free(s->success_status.code); - s->success_status.code = NULL; - set_free(s->success_status.signal); - s->success_status.signal = NULL; + exit_status_set_free(&s->restart_prevent_status); + exit_status_set_free(&s->restart_force_status); + exit_status_set_free(&s->success_status); /* This will leak a process, but at least no memory or any of * our resources */ @@ -331,6 +275,7 @@ static void service_done(Unit *u) { s->bus_name = NULL; } + s->bus_endpoint_fd = safe_close(s->bus_endpoint_fd); service_close_socket_fd(s); service_connection_unref(s); @@ -354,775 +299,60 @@ static int service_arm_timer(Service *s, usec_t usec) { return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); } - return sd_event_add_monotonic(UNIT(s)->manager->event, now(CLOCK_MONOTONIC) + usec, 0, service_dispatch_timer, s, &s->timer_event_source); -} - -#ifdef HAVE_SYSV_COMPAT -static char *sysv_translate_name(const char *name) { - char *r; - - r = new(char, strlen(name) + sizeof(".service")); - if (!r) - return NULL; - - if (endswith(name, ".sh")) - /* Drop .sh suffix */ - strcpy(stpcpy(r, name) - 3, ".service"); - else - /* Normal init script name */ - strcpy(stpcpy(r, name), ".service"); - - return r; -} - -static int sysv_translate_facility(const char *name, const char *filename, char **_r) { - - /* We silently ignore the $ prefix here. According to the LSB - * spec it simply indicates whether something is a - * standardized name or a distribution-specific one. Since we - * just follow what already exists and do not introduce new - * uses or names we don't care who introduced a new name. */ - - static const char * const table[] = { - /* LSB defined facilities */ - "local_fs", NULL, - "network", SPECIAL_NETWORK_TARGET, - "named", SPECIAL_NSS_LOOKUP_TARGET, - "portmap", SPECIAL_RPCBIND_TARGET, - "remote_fs", SPECIAL_REMOTE_FS_TARGET, - "syslog", NULL, - "time", SPECIAL_TIME_SYNC_TARGET, - }; - - unsigned i; - char *r; - const char *n; - - assert(name); - assert(_r); - - n = *name == '$' ? name + 1 : name; - - for (i = 0; i < ELEMENTSOF(table); i += 2) { - - if (!streq(table[i], n)) - continue; - - if (!table[i+1]) - return 0; - - r = strdup(table[i+1]); - if (!r) - return log_oom(); - - goto finish; - } - - /* If we don't know this name, fallback heuristics to figure - * out whether something is a target or a service alias. */ - - if (*name == '$') { - if (!unit_prefix_is_valid(n)) - return -EINVAL; - - /* Facilities starting with $ are most likely targets */ - r = unit_name_build(n, NULL, ".target"); - } else if (filename && streq(name, filename)) - /* Names equaling the file name of the services are redundant */ - return 0; - else - /* Everything else we assume to be normal service names */ - r = sysv_translate_name(n); - - if (!r) - return -ENOMEM; - -finish: - *_r = r; - - return 1; + return sd_event_add_time( + UNIT(s)->manager->event, + &s->timer_event_source, + CLOCK_MONOTONIC, + now(CLOCK_MONOTONIC) + usec, 0, + service_dispatch_timer, s); } -static int sysv_fix_order(Service *s) { - Unit *other; - int r; - +static int service_verify(Service *s) { assert(s); - if (s->sysv_start_priority < 0) + if (UNIT(s)->load_state != UNIT_LOADED) return 0; - /* For each pair of services where at least one lacks a LSB - * header, we use the start priority value to order things. */ - - LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) { - Service *t; - UnitDependency d; - bool special_s, special_t; - - t = SERVICE(other); - - if (s == t) - continue; - - if (UNIT(t)->load_state != UNIT_LOADED) - continue; - - if (t->sysv_start_priority < 0) - continue; - - /* If both units have modern headers we don't care - * about the priorities */ - if ((UNIT(s)->fragment_path || s->sysv_has_lsb) && - (UNIT(t)->fragment_path || t->sysv_has_lsb)) - continue; - - special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels); - special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels); - - if (special_t && !special_s) - d = UNIT_AFTER; - else if (special_s && !special_t) - d = UNIT_BEFORE; - else if (t->sysv_start_priority < s->sysv_start_priority) - d = UNIT_AFTER; - else if (t->sysv_start_priority > s->sysv_start_priority) - d = UNIT_BEFORE; - else - continue; - - /* FIXME: Maybe we should compare the name here lexicographically? */ - - if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0) - return r; - } - - return 0; -} - -static ExecCommand *exec_command_new(const char *path, const char *arg1) { - ExecCommand *c; - - if (!(c = new0(ExecCommand, 1))) - return NULL; - - if (!(c->path = strdup(path))) { - free(c); - return NULL; - } - - if (!(c->argv = strv_new(path, arg1, NULL))) { - free(c->path); - free(c); - return NULL; - } - - return c; -} - -static int sysv_exec_commands(Service *s, const bool supports_reload) { - ExecCommand *c; - - assert(s); - assert(s->is_sysv); - assert(UNIT(s)->source_path); - - c = exec_command_new(UNIT(s)->source_path, "start"); - if (!c) - return -ENOMEM; - exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c); - - c = exec_command_new(UNIT(s)->source_path, "stop"); - if (!c) - return -ENOMEM; - exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c); - - if (supports_reload) { - c = exec_command_new(UNIT(s)->source_path, "reload"); - if (!c) - return -ENOMEM; - exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c); - } - - return 0; -} - -static bool usage_contains_reload(const char *line) { - return (strcasestr(line, "{reload|") || - strcasestr(line, "{reload}") || - strcasestr(line, "{reload\"") || - strcasestr(line, "|reload|") || - strcasestr(line, "|reload}") || - strcasestr(line, "|reload\"")); -} - -static int service_load_sysv_path(Service *s, const char *path) { - FILE *f; - Unit *u; - unsigned line = 0; - int r; - enum { - NORMAL, - DESCRIPTION, - LSB, - LSB_DESCRIPTION, - USAGE_CONTINUATION - } state = NORMAL; - char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description; - struct stat st; - bool supports_reload = false; - - assert(s); - assert(path); - - u = UNIT(s); - - f = fopen(path, "re"); - if (!f) { - r = errno == ENOENT ? 0 : -errno; - goto finish; - } - - if (fstat(fileno(f), &st) < 0) { - r = -errno; - goto finish; - } - - free(u->source_path); - u->source_path = strdup(path); - if (!u->source_path) { - r = -ENOMEM; - goto finish; - } - u->source_mtime = timespec_load(&st.st_mtim); - - if (null_or_empty(&st)) { - u->load_state = UNIT_MASKED; - r = 0; - goto finish; - } - - s->is_sysv = true; - - while (!feof(f)) { - char l[LINE_MAX], *t; - - if (!fgets(l, sizeof(l), f)) { - if (feof(f)) - break; - - r = -errno; - log_error_unit(u->id, - "Failed to read configuration file '%s': %s", - path, strerror(-r)); - goto finish; - } - - line++; - - t = strstrip(l); - if (*t != '#') { - /* Try to figure out whether this init script supports - * the reload operation. This heuristic looks for - * "Usage" lines which include the reload option. */ - if ( state == USAGE_CONTINUATION || - (state == NORMAL && strcasestr(t, "usage"))) { - if (usage_contains_reload(t)) { - supports_reload = true; - state = NORMAL; - } else if (t[strlen(t)-1] == '\\') - state = USAGE_CONTINUATION; - else - state = NORMAL; - } - - continue; - } - - if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) { - state = LSB; - s->sysv_has_lsb = true; - continue; - } - - if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) { - state = NORMAL; - continue; - } - - t++; - t += strspn(t, WHITESPACE); - - if (state == NORMAL) { - - /* Try to parse Red Hat style chkconfig headers */ - - if (startswith_no_case(t, "chkconfig:")) { - int start_priority; - char runlevels[16], *k; - - state = NORMAL; - - if (sscanf(t+10, "%15s %i %*i", - runlevels, - &start_priority) != 2) { - - log_warning_unit(u->id, - "[%s:%u] Failed to parse chkconfig line. Ignoring.", - path, line); - continue; - } - - /* A start priority gathered from the - * symlink farms is preferred over the - * data from the LSB header. */ - if (start_priority < 0 || start_priority > 99) - log_warning_unit(u->id, - "[%s:%u] Start priority out of range. Ignoring.", - path, line); - 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; - } - - } else if (startswith_no_case(t, "description:")) { - - size_t k = strlen(t); - char *d; - const char *j; - - if (t[k-1] == '\\') { - state = DESCRIPTION; - t[k-1] = 0; - } - - if ((j = strstrip(t+12)) && *j) { - if (!(d = strdup(j))) { - r = -ENOMEM; - goto finish; - } - } else - d = NULL; - - free(chkconfig_description); - chkconfig_description = d; - - } else if (startswith_no_case(t, "pidfile:")) { - - char *fn; - - state = NORMAL; - - fn = strstrip(t+8); - if (!path_is_absolute(fn)) { - log_warning_unit(u->id, - "[%s:%u] PID file not absolute. Ignoring.", - path, line); - continue; - } - - if (!(fn = strdup(fn))) { - r = -ENOMEM; - goto finish; - } - - free(s->pid_file); - s->pid_file = fn; - } - - } else if (state == DESCRIPTION) { - - /* Try to parse Red Hat style description - * continuation */ - - size_t k = strlen(t); - char *j; - - if (t[k-1] == '\\') - t[k-1] = 0; - else - state = NORMAL; - - if ((j = strstrip(t)) && *j) { - char *d = NULL; - - if (chkconfig_description) - d = strjoin(chkconfig_description, " ", j, NULL); - else - d = strdup(j); - - if (!d) { - r = -ENOMEM; - goto finish; - } - - free(chkconfig_description); - chkconfig_description = d; - } - - } else if (state == LSB || state == LSB_DESCRIPTION) { - - if (startswith_no_case(t, "Provides:")) { - char *i, *w; - size_t z; - - state = LSB; - - FOREACH_WORD_QUOTED(w, z, t+9, i) { - char *n, *m; - - if (!(n = strndup(w, z))) { - r = -ENOMEM; - goto finish; - } - - r = sysv_translate_facility(n, basename(path), &m); - free(n); - - if (r < 0) - goto finish; - - if (r == 0) - continue; - - if (unit_name_to_type(m) == UNIT_SERVICE) - r = unit_merge_by_name(u, m); - else - /* NB: SysV targets - * which are provided - * by a service are - * pulled in by the - * services, as an - * indication that the - * generic service is - * now available. This - * is strictly - * one-way. The - * targets do NOT pull - * in the SysV - * services! */ - r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true); - - if (r < 0) - log_error_unit(u->id, - "[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", - path, line, m, strerror(-r)); - - free(m); - } - - } else if (startswith_no_case(t, "Required-Start:") || - startswith_no_case(t, "Should-Start:") || - startswith_no_case(t, "X-Start-Before:") || - startswith_no_case(t, "X-Start-After:")) { - char *i, *w; - size_t z; - - state = LSB; - - FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) { - char *n, *m; - - if (!(n = strndup(w, z))) { - r = -ENOMEM; - goto finish; - } - - r = sysv_translate_facility(n, basename(path), &m); - if (r < 0) { - log_error_unit(u->id, - "[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", - path, line, n, strerror(-r)); - free(n); - continue; - } - - free(n); - - if (r == 0) - continue; - - r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true); - - if (r < 0) - log_error_unit(u->id, "[%s:%u] Failed to add dependency on %s, ignoring: %s", - path, line, m, strerror(-r)); - - free(m); - } - } else if (startswith_no_case(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_no_case(t, "Description:")) { - char *d, *j; - - state = LSB_DESCRIPTION; - - if ((j = strstrip(t+12)) && *j) { - if (!(d = strdup(j))) { - r = -ENOMEM; - goto finish; - } - } else - d = NULL; - - free(long_description); - long_description = d; - - } else if (startswith_no_case(t, "Short-Description:")) { - char *d, *j; - - state = LSB; - - if ((j = strstrip(t+18)) && *j) { - if (!(d = strdup(j))) { - r = -ENOMEM; - goto finish; - } - } else - d = NULL; - - free(short_description); - short_description = d; - - } else if (state == LSB_DESCRIPTION) { - - if (startswith(l, "#\t") || startswith(l, "# ")) { - char *j; - - if ((j = strstrip(t)) && *j) { - char *d = NULL; - - if (long_description) - d = strjoin(long_description, " ", t, NULL); - else - d = strdup(j); - - if (!d) { - r = -ENOMEM; - goto finish; - } - - free(long_description); - long_description = d; - } - - } else - state = LSB; - } - } - } - - if ((r = sysv_exec_commands(s, supports_reload)) < 0) - goto finish; - - if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, 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. */ - - UNIT(s)->default_dependencies = false; - - /* Don't timeout special services during boot (like fsck) */ - s->timeout_start_usec = 0; - s->timeout_stop_usec = 0; - } else { - s->timeout_start_usec = DEFAULT_SYSV_TIMEOUT_USEC; - s->timeout_stop_usec = DEFAULT_SYSV_TIMEOUT_USEC; + if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP]) { + log_error_unit(UNIT(s)->id, "%s lacks both ExecStart= and ExecStop= setting. Refusing.", UNIT(s)->id); + return -EINVAL; } - /* Special setting for all SysV services */ - s->type = SERVICE_FORKING; - s->remain_after_exit = !s->pid_file; - s->guess_main_pid = false; - s->restart = SERVICE_RESTART_NO; - s->exec_context.ignore_sigpipe = false; - s->kill_context.kill_mode = KILL_PROCESS; - - /* We use the long description only if - * no short description is set. */ - - if (short_description) - description = short_description; - else if (chkconfig_description) - description = chkconfig_description; - else if (long_description) - description = long_description; - else - description = NULL; - - if (description) { - char *d; - - if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) { - r = -ENOMEM; - goto finish; - } - - u->description = d; + if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) { + log_error_unit(UNIT(s)->id, "%s has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id); + return -EINVAL; } - /* The priority that has been set in /etc/rcN.d/ hierarchies - * takes precedence over what is stored as default in the LSB - * header */ - if (s->sysv_start_priority_from_rcnd >= 0) - s->sysv_start_priority = s->sysv_start_priority_from_rcnd; - - u->load_state = UNIT_LOADED; - r = 0; - -finish: - - if (f) - fclose(f); - - free(short_description); - free(long_description); - free(chkconfig_description); - - return r; -} - -static int service_load_sysv_name(Service *s, const char *name) { - char **p; - - assert(s); - assert(name); - - /* For SysV services we strip the *.sh suffixes. */ - if (endswith(name, ".sh.service")) - return -ENOENT; - - STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) { - char *path; - int r; - - path = strjoin(*p, "/", name, NULL); - if (!path) - return -ENOMEM; - - assert(endswith(path, ".service")); - path[strlen(path)-8] = 0; - - r = service_load_sysv_path(s, path); - - if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) { - /* Try *.sh source'able init scripts */ - strcat(path, ".sh"); - r = service_load_sysv_path(s, path); - } - free(path); - - if (r < 0) - return r; - - if (UNIT(s)->load_state != UNIT_STUB) - break; + if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START]) { + log_error_unit(UNIT(s)->id, "%s has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing.", UNIT(s)->id); + return -EINVAL; } - return 0; -} - -static int service_load_sysv(Service *s) { - const char *t; - Iterator i; - int r; - - assert(s); - - /* Load service data from SysV init scripts, preferably with - * LSB headers ... */ - - if (strv_isempty(UNIT(s)->manager->lookup_paths.sysvinit_path)) - return 0; - - if ((t = UNIT(s)->id)) - if ((r = service_load_sysv_name(s, t)) < 0) - return r; - - if (UNIT(s)->load_state == UNIT_STUB) - SET_FOREACH(t, UNIT(s)->names, i) { - if (t == UNIT(s)->id) - continue; - - if ((r = service_load_sysv_name(s, t)) < 0) - return r; - - if (UNIT(s)->load_state != UNIT_STUB) - break; - } - - return 0; -} -#endif - -static int service_verify(Service *s) { - assert(s); - - if (UNIT(s)->load_state != UNIT_LOADED) - return 0; - - if (!s->exec_command[SERVICE_EXEC_START]) { - log_error_unit(UNIT(s)->id, - "%s lacks ExecStart setting. Refusing.", UNIT(s)->id); + if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) { + log_error_unit(UNIT(s)->id, "%s has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id); return -EINVAL; } - if (s->type != SERVICE_ONESHOT && - s->exec_command[SERVICE_EXEC_START]->command_next) { - log_error_unit(UNIT(s)->id, - "%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id); + if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) { + log_error_unit(UNIT(s)->id, "%s has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing.", UNIT(s)->id); return -EINVAL; } - if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) { - log_error_unit(UNIT(s)->id, - "%s has Restart setting other than no, which isn't allowed for Type=oneshot services. Refusing.", UNIT(s)->id); + if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) { + log_error_unit(UNIT(s)->id, "%s has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing.", UNIT(s)->id); return -EINVAL; } if (s->type == SERVICE_DBUS && !s->bus_name) { - log_error_unit(UNIT(s)->id, - "%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id); + log_error_unit(UNIT(s)->id, "%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id); return -EINVAL; } if (s->bus_name && s->type != SERVICE_DBUS) - log_warning_unit(UNIT(s)->id, - "%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", UNIT(s)->id); + log_warning_unit(UNIT(s)->id, "%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", UNIT(s)->id); - if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) { - log_error_unit(UNIT(s)->id, - "%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id); + if (s->exec_context.pam_name && !(s->kill_context.kill_mode == KILL_CONTROL_GROUP || s->kill_context.kill_mode == KILL_MIXED)) { + log_error_unit(UNIT(s)->id, "%s has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing.", UNIT(s)->id); return -EINVAL; } @@ -1138,14 +368,12 @@ static int service_add_default_dependencies(Service *s) { * majority of services. */ /* First, pull in base system */ - r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, - SPECIAL_BASIC_TARGET, NULL, true); + r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true); if (r < 0) return r; /* Second, activate normal shutdown */ - r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, - SPECIAL_SHUTDOWN_TARGET, NULL, true); + r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); return r; } @@ -1168,8 +396,8 @@ static void service_fix_output(Service *s) { } static int service_load(Unit *u) { - int r; Service *s = SERVICE(u); + int r; assert(s); @@ -1178,15 +406,6 @@ static int service_load(Unit *u) { if (r < 0) return r; -#ifdef HAVE_SYSV_COMPAT - /* Load a classic init script as a fallback, if we couldn't find anything */ - if (u->load_state == UNIT_STUB) { - r = service_load_sysv(s); - if (r < 0) - return r; - } -#endif - /* Still nothing found? Then let's give up */ if (u->load_state == UNIT_STUB) return -ENOENT; @@ -1200,8 +419,15 @@ static int service_load(Unit *u) { if (r < 0) return r; - if (s->type == _SERVICE_TYPE_INVALID) - s->type = s->bus_name ? SERVICE_DBUS : SERVICE_SIMPLE; + if (s->type == _SERVICE_TYPE_INVALID) { + /* Figure out a type automatically */ + if (s->bus_name) + s->type = SERVICE_DBUS; + else if (s->exec_command[SERVICE_EXEC_START]) + s->type = SERVICE_SIMPLE; + else + s->type = SERVICE_ONESHOT; + } /* Oneshot services have disabled start timeout by default */ if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) @@ -1209,25 +435,17 @@ static int service_load(Unit *u) { service_fix_output(s); - r = unit_add_exec_dependencies(u, &s->exec_context); + r = unit_patch_contexts(u); if (r < 0) return r; - r = unit_add_default_slice(u); + r = unit_add_exec_dependencies(u, &s->exec_context); if (r < 0) return r; -#ifdef HAVE_SYSV_COMPAT - r = sysv_fix_order(s); + r = unit_add_default_slice(u, &s->cgroup_context); if (r < 0) return r; -#endif - - if (s->bus_name) { - r = unit_watch_bus_name(u, s->bus_name); - if (r < 0) - return r; - } if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE) s->notify_access = NOTIFY_MAIN; @@ -1235,31 +453,32 @@ static int service_load(Unit *u) { if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE) s->notify_access = NOTIFY_MAIN; - if (UNIT(s)->default_dependencies) { - r = service_add_default_dependencies(s); + if (s->bus_name) { + r = unit_watch_bus_name(u, s->bus_name); if (r < 0) return r; } - r = unit_exec_context_defaults(u, &s->exec_context); - if (r < 0) - return r; + if (u->default_dependencies) { + r = service_add_default_dependencies(s); + if (r < 0) + + return r; + } } return service_verify(s); } static void service_dump(Unit *u, FILE *f, const char *prefix) { - ServiceExecCommand c; Service *s = SERVICE(u); const char *prefix2; - _cleanup_free_ char *p2 = NULL; assert(s); - p2 = strappend(prefix, "\t"); - prefix2 = p2 ? p2 : prefix; + prefix = strempty(prefix); + prefix2 = strappenda(prefix, "\t"); fprintf(f, "%sService State: %s\n" @@ -1271,7 +490,8 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) { "%sGuessMainPID: %s\n" "%sType: %s\n" "%sRestart: %s\n" - "%sNotifyAccess: %s\n", + "%sNotifyAccess: %s\n" + "%sNotifyState: %s\n", prefix, service_state_to_string(s->state), prefix, service_result_to_string(s->result), prefix, service_result_to_string(s->reload_result), @@ -1281,7 +501,8 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) { prefix, yes_no(s->guess_main_pid), prefix, service_type_to_string(s->type), prefix, service_restart_to_string(s->restart), - prefix, notify_access_to_string(s->notify_access)); + prefix, notify_access_to_string(s->notify_access), + prefix, notify_state_to_string(s->notify_state)); if (s->control_pid > 0) fprintf(f, @@ -1324,21 +545,10 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) { } #ifdef HAVE_SYSV_COMPAT - if (s->is_sysv) - fprintf(f, - "%sSysV Init Script has LSB Header: %s\n" - "%sSysVEnabled: %s\n", - prefix, yes_no(s->sysv_has_lsb), - prefix, yes_no(s->sysv_enabled)); - if (s->sysv_start_priority >= 0) fprintf(f, "%sSysVStartPriority: %i\n", prefix, s->sysv_start_priority); - - if (s->sysv_runlevels) - fprintf(f, "%sSysVRunLevels: %s\n", - prefix, s->sysv_runlevels); #endif if (s->status_text) @@ -1359,26 +569,20 @@ static int service_load_pid_file(Service *s, bool may_warn) { r = read_one_line_file(s->pid_file, &k); if (r < 0) { if (may_warn) - log_info_unit(UNIT(s)->id, - "PID file %s not readable (yet?) after %s.", - s->pid_file, service_state_to_string(s->state)); + log_info_unit(UNIT(s)->id, "PID file %s not readable (yet?) after %s.", s->pid_file, service_state_to_string(s->state)); return r; } r = parse_pid(k, &pid); if (r < 0) { if (may_warn) - log_info_unit(UNIT(s)->id, - "Failed to read PID from file %s: %s", - s->pid_file, strerror(-r)); + log_info_unit(UNIT(s)->id, "Failed to read PID from file %s: %s", s->pid_file, strerror(-r)); return r; } - if (kill(pid, 0) < 0 && errno != EPERM) { + if (!pid_is_alive(pid)) { if (may_warn) - log_info_unit(UNIT(s)->id, - "PID "PID_FMT" read from file %s does not exist.", - pid, s->pid_file); + log_info_unit(UNIT(s)->id, "PID "PID_FMT" read from file %s does not exist or is a zombie.", pid, s->pid_file); return -ESRCH; } @@ -1386,14 +590,12 @@ static int service_load_pid_file(Service *s, bool may_warn) { if (pid == s->main_pid) return 0; - log_debug_unit(UNIT(s)->id, - "Main PID changing: "PID_FMT" -> "PID_FMT, - s->main_pid, pid); + log_debug_unit(UNIT(s)->id, "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid); + service_unwatch_main_pid(s); s->main_pid_known = false; } else - log_debug_unit(UNIT(s)->id, - "Main PID loaded: "PID_FMT, pid); + log_debug_unit(UNIT(s)->id, "Main PID loaded: "PID_FMT, pid); r = service_set_main_pid(s, pid); if (r < 0) @@ -1402,9 +604,7 @@ static int service_load_pid_file(Service *s, bool may_warn) { r = unit_watch_pid(UNIT(s), pid); if (r < 0) { /* FIXME: we need to do something here */ - log_warning_unit(UNIT(s)->id, - "Failed to watch PID "PID_FMT" from service %s", - pid, UNIT(s)->id); + log_warning_unit(UNIT(s)->id, "Failed to watch PID "PID_FMT" from service %s", pid, UNIT(s)->id); return r; } @@ -1431,19 +631,17 @@ static int service_search_main_pid(Service *s) { if (pid <= 0) return -ENOENT; - log_debug_unit(UNIT(s)->id, - "Main PID guessed: "PID_FMT, pid); + log_debug_unit(UNIT(s)->id, "Main PID guessed: "PID_FMT, pid); r = service_set_main_pid(s, pid); if (r < 0) return r; r = unit_watch_pid(UNIT(s), pid); - if (r < 0) + if (r < 0) { /* FIXME: we need to do something here */ - log_warning_unit(UNIT(s)->id, - "Failed to watch PID "PID_FMT" from service %s", - pid, UNIT(s)->id); + log_warning_unit(UNIT(s)->id, "Failed to watch PID "PID_FMT" from service %s", pid, UNIT(s)->id); return r; + } return 0; } @@ -1491,6 +689,9 @@ static void service_set_state(Service *s, ServiceState state) { s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; } + if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) + unit_unwatch_all_pids(UNIT(s)); + if (!IN_SET(state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD, @@ -1512,9 +713,13 @@ static void service_set_state(Service *s, ServiceState state) { /* For remain_after_exit services, let's see if we can "release" the * hold on the console, since unit_notify() only does that in case of * change of state */ - if (state == SERVICE_EXITED && s->remain_after_exit && + if (state == SERVICE_EXITED && + s->remain_after_exit && UNIT(s)->manager->n_on_console > 0) { - ExecContext *ec = unit_get_exec_context(UNIT(s)); + + ExecContext *ec; + + ec = unit_get_exec_context(UNIT(s)); if (ec && exec_context_may_touch_console(ec)) { Manager *m = UNIT(s)->manager; @@ -1568,7 +773,7 @@ static int service_coldplug(Unit *u) { return r; } - if (pid_valid(s->main_pid) && + if (pid_is_unwaited(s->main_pid) && ((s->deserialized_state == SERVICE_START && IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_ONESHOT, SERVICE_NOTIFY)) || IN_SET(s->deserialized_state, SERVICE_START, SERVICE_START_POST, @@ -1581,7 +786,7 @@ static int service_coldplug(Unit *u) { return r; } - if (pid_valid(s->control_pid) && + if (pid_is_unwaited(s->control_pid) && IN_SET(s->deserialized_state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD, @@ -1593,6 +798,9 @@ static int service_coldplug(Unit *u) { return r; } + if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) + unit_watch_all_pids(UNIT(s)); + if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) service_start_watchdog(s); @@ -1670,7 +878,7 @@ fail: static int service_spawn( Service *s, ExecCommand *c, - bool timeout, + usec_t timeout, bool pass_fds, bool apply_permissions, bool apply_chroot, @@ -1684,9 +892,16 @@ static int service_spawn( int *fds = NULL; _cleanup_free_ int *fdsbuf = NULL; unsigned n_fds = 0, n_env = 0; + _cleanup_free_ char *bus_endpoint_path = NULL; _cleanup_strv_free_ char **argv = NULL, **final_env = NULL, **our_env = NULL; const char *path; + ExecParameters exec_params = { + .apply_permissions = apply_permissions, + .apply_chroot = apply_chroot, + .apply_tty_stdin = apply_tty_stdin, + .bus_endpoint_fd = -1, + }; assert(s); assert(c); @@ -1715,8 +930,8 @@ static int service_spawn( } } - if (timeout && s->timeout_start_usec > 0) { - r = service_arm_timer(s, s->timeout_start_usec); + if (timeout > 0) { + r = service_arm_timer(s, timeout); if (r < 0) goto fail; } else @@ -1762,20 +977,37 @@ static int service_spawn( } else path = UNIT(s)->cgroup_path; +#ifdef ENABLE_KDBUS + if (s->exec_context.bus_endpoint) { + r = bus_kernel_create_endpoint(UNIT(s)->manager->running_as == SYSTEMD_SYSTEM ? "system" : "user", + UNIT(s)->id, &bus_endpoint_path); + if (r < 0) + goto fail; + + /* Pass the fd to the exec_params so that the child process can upload the policy. + * Keep a reference to the fd in the service, so the endpoint is kept alive as long + * as the service is running. */ + exec_params.bus_endpoint_fd = s->bus_endpoint_fd = r; + } +#endif + + exec_params.argv = argv; + exec_params.fds = fds; + exec_params.n_fds = n_fds; + exec_params.environment = final_env; + exec_params.confirm_spawn = UNIT(s)->manager->confirm_spawn; + exec_params.cgroup_supported = UNIT(s)->manager->cgroup_supported; + exec_params.cgroup_path = path; + exec_params.runtime_prefix = manager_get_runtime_prefix(UNIT(s)->manager); + exec_params.unit_id = UNIT(s)->id; + exec_params.watchdog_usec = s->watchdog_usec; + exec_params.bus_endpoint_path = bus_endpoint_path; + if (s->type == SERVICE_IDLE) + exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; + r = exec_spawn(c, - argv, &s->exec_context, - fds, n_fds, - final_env, - apply_permissions, - apply_chroot, - apply_tty_stdin, - UNIT(s)->manager->confirm_spawn, - UNIT(s)->manager->cgroup_supported, - path, - UNIT(s)->id, - s->watchdog_usec, - s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL, + &exec_params, s->exec_runtime, &pid); if (r < 0) @@ -1810,7 +1042,7 @@ static int main_pid_good(Service *s) { /* If it's an alien child let's check if it is still * alive ... */ if (s->main_pid_alien && s->main_pid > 0) - return kill(s->main_pid, 0) >= 0 || errno != ESRCH; + return pid_is_alive(s->main_pid); /* .. otherwise assume we'll get a SIGCHLD for it, * which we really should wait for to collect exit @@ -1852,18 +1084,23 @@ static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD); + if (s->result != SERVICE_SUCCESS) { + log_warning_unit(UNIT(s)->id, "%s failed.", UNIT(s)->id); + failure_action(UNIT(s)->manager, s->failure_action, s->reboot_arg); + } + if (allow_restart && !s->forbid_restart && (s->restart == SERVICE_RESTART_ALWAYS || (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) || (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) || + (s->restart == SERVICE_RESTART_ON_ABNORMAL && !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE)) || (s->restart == SERVICE_RESTART_ON_WATCHDOG && s->result == SERVICE_FAILURE_WATCHDOG) || - (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL || - s->result == SERVICE_FAILURE_CORE_DUMP))) && - (s->result != SERVICE_FAILURE_EXIT_CODE || - !set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) && - (s->result != SERVICE_FAILURE_SIGNAL || - !set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status)))) { + (s->restart == SERVICE_RESTART_ON_ABORT && IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP)) || + (s->main_exec_status.code == CLD_EXITED && set_contains(s->restart_force_status.status, INT_TO_PTR(s->main_exec_status.status))) || + (IN_SET(s->main_exec_status.code, CLD_KILLED, CLD_DUMPED) && set_contains(s->restart_force_status.signal, INT_TO_PTR(s->main_exec_status.status)))) && + (s->main_exec_status.code != CLD_EXITED || !set_contains(s->restart_prevent_status.status, INT_TO_PTR(s->main_exec_status.status))) && + (!IN_SET(s->main_exec_status.code, CLD_KILLED, CLD_DUMPED) || !set_contains(s->restart_prevent_status.signal, INT_TO_PTR(s->main_exec_status.status)))) { r = service_arm_timer(s, s->restart_usec); if (r < 0) @@ -1874,10 +1111,13 @@ static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) s->forbid_restart = false; - /* we want fresh tmpdirs in case service is started again immediately */ + /* We want fresh tmpdirs in case service is started again immediately */ exec_runtime_destroy(s->exec_runtime); s->exec_runtime = exec_runtime_unref(s->exec_runtime); + /* Also, remove the runtime directory in */ + exec_context_destroy_runtime_directory(&s->exec_context, manager_get_runtime_prefix(UNIT(s)->manager)); + /* Try to delete the pid file. At this point it will be * out-of-date, and some software might be confused by it, so * let's remove it. */ @@ -1887,9 +1127,7 @@ static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) return; fail: - log_warning_unit(UNIT(s)->id, - "%s failed to run install restart timer: %s", - UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to run install restart timer: %s", UNIT(s)->id, strerror(-r)); service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); } @@ -1901,6 +1139,7 @@ static void service_enter_stop_post(Service *s, ServiceResult f) { s->result = f; service_unwatch_control_pid(s); + unit_watch_all_pids(UNIT(s)); s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; if (s->control_command) { @@ -1908,7 +1147,7 @@ static void service_enter_stop_post(Service *s, ServiceResult f) { r = service_spawn(s, s->control_command, - true, + s->timeout_stop_usec, false, !s->permissions_start_only, !s->root_directory_start_only, @@ -1919,17 +1158,14 @@ static void service_enter_stop_post(Service *s, ServiceResult f) { if (r < 0) goto fail; - service_set_state(s, SERVICE_STOP_POST); } else - service_enter_dead(s, SERVICE_SUCCESS, true); + service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); return; fail: - log_warning_unit(UNIT(s)->id, - "%s failed to run 'stop-post' task: %s", - UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to run 'stop-post' task: %s", UNIT(s)->id, strerror(-r)); service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); } @@ -1941,6 +1177,8 @@ static void service_enter_signal(Service *s, ServiceState state, ServiceResult f if (f != SERVICE_SUCCESS) s->result = f; + unit_watch_all_pids(UNIT(s)); + r = unit_kill_context( UNIT(s), &s->kill_context, @@ -1948,6 +1186,7 @@ static void service_enter_signal(Service *s, ServiceState state, ServiceResult f s->main_pid, s->control_pid, s->main_pid_alien); + if (r < 0) goto fail; @@ -1959,16 +1198,19 @@ static void service_enter_signal(Service *s, ServiceState state, ServiceResult f } service_set_state(s, state); - } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL) + } else if (state == SERVICE_STOP_SIGTERM) + service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); + else if (state == SERVICE_STOP_SIGKILL) service_enter_stop_post(s, SERVICE_SUCCESS); + else if (state == SERVICE_FINAL_SIGTERM) + service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); else service_enter_dead(s, SERVICE_SUCCESS, true); return; fail: - log_warning_unit(UNIT(s)->id, - "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r)); if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL) service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); @@ -1976,6 +1218,17 @@ fail: service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); } +static void service_enter_stop_by_notify(Service *s) { + assert(s); + + unit_watch_all_pids(UNIT(s)); + + if (s->timeout_stop_usec > 0) + service_arm_timer(s, s->timeout_stop_usec); + + service_set_state(s, SERVICE_STOP); +} + static void service_enter_stop(Service *s, ServiceResult f) { int r; @@ -1985,6 +1238,7 @@ static void service_enter_stop(Service *s, ServiceResult f) { s->result = f; service_unwatch_control_pid(s); + unit_watch_all_pids(UNIT(s)); s->control_command = s->exec_command[SERVICE_EXEC_STOP]; if (s->control_command) { @@ -1992,7 +1246,7 @@ static void service_enter_stop(Service *s, ServiceResult f) { r = service_spawn(s, s->control_command, - true, + s->timeout_stop_usec, false, !s->permissions_start_only, !s->root_directory_start_only, @@ -2010,8 +1264,7 @@ static void service_enter_stop(Service *s, ServiceResult f) { return; fail: - log_warning_unit(UNIT(s)->id, - "%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r)); service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); } @@ -2026,9 +1279,18 @@ static void service_enter_running(Service *s, ServiceResult f) { cgroup_ok = cgroup_good(s); if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) && - (s->bus_name_good || s->type != SERVICE_DBUS)) - service_set_state(s, SERVICE_RUNNING); - else if (s->remain_after_exit) + (s->bus_name_good || s->type != SERVICE_DBUS)) { + + /* If there are any queued up sd_notify() + * notifications, process them now */ + if (s->notify_state == NOTIFY_RELOADING) + service_enter_reload_by_notify(s); + else if (s->notify_state == NOTIFY_STOPPING) + service_enter_stop_by_notify(s); + else + service_set_state(s, SERVICE_RUNNING); + + } else if (s->remain_after_exit) service_set_state(s, SERVICE_EXITED); else service_enter_stop(s, SERVICE_SUCCESS); @@ -2047,7 +1309,7 @@ static void service_enter_start_post(Service *s) { r = service_spawn(s, s->control_command, - true, + s->timeout_start_usec, false, !s->permissions_start_only, !s->root_directory_start_only, @@ -2065,8 +1327,7 @@ static void service_enter_start_post(Service *s) { return; fail: - log_warning_unit(UNIT(s)->id, - "%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r)); service_enter_stop(s, SERVICE_FAILURE_RESOURCES); } @@ -2087,9 +1348,6 @@ static void service_enter_start(Service *s) { assert(s); - assert(s->exec_command[SERVICE_EXEC_START]); - assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT); - service_unwatch_control_pid(s); service_unwatch_main_pid(s); @@ -2110,10 +1368,15 @@ static void service_enter_start(Service *s) { c = s->main_command = s->exec_command[SERVICE_EXEC_START]; } + if (!c) { + assert(s->type == SERVICE_ONESHOT); + service_enter_start_post(s); + return; + } + r = service_spawn(s, c, - s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || - s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT, + IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_NOTIFY, SERVICE_ONESHOT) ? s->timeout_start_usec : 0, true, true, true, @@ -2158,8 +1421,7 @@ static void service_enter_start(Service *s) { return; fail: - log_warning_unit(UNIT(s)->id, - "%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r)); service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); } @@ -2180,7 +1442,7 @@ static void service_enter_start_pre(Service *s) { r = service_spawn(s, s->control_command, - true, + s->timeout_start_usec, false, !s->permissions_start_only, !s->root_directory_start_only, @@ -2198,8 +1460,7 @@ static void service_enter_start_pre(Service *s) { return; fail: - log_warning_unit(UNIT(s)->id, - "%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r)); service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); } @@ -2211,8 +1472,7 @@ static void service_enter_restart(Service *s) { if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) { /* Don't restart things if we are going down anyway */ - log_info_unit(UNIT(s)->id, - "Stop job pending for unit, delaying automatic restart."); + log_info_unit(UNIT(s)->id, "Stop job pending for unit, delaying automatic restart."); r = service_arm_timer(s, s->restart_usec); if (r < 0) @@ -2233,17 +1493,23 @@ static void service_enter_restart(Service *s) { * it will be canceled as part of the service_stop() call that * is executed as part of JOB_RESTART. */ - log_debug_unit(UNIT(s)->id, - "%s scheduled restart job.", UNIT(s)->id); + log_debug_unit(UNIT(s)->id, "%s scheduled restart job.", UNIT(s)->id); return; fail: - log_warning_unit(UNIT(s)->id, - "%s failed to schedule restart job: %s", - UNIT(s)->id, bus_error_message(&error, -r)); + log_warning_unit(UNIT(s)->id, "%s failed to schedule restart job: %s", UNIT(s)->id, bus_error_message(&error, -r)); service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); } +static void service_enter_reload_by_notify(Service *s) { + assert(s); + + if (s->timeout_start_usec > 0) + service_arm_timer(s, s->timeout_start_usec); + + service_set_state(s, SERVICE_RELOAD); +} + static void service_enter_reload(Service *s) { int r; @@ -2257,7 +1523,7 @@ static void service_enter_reload(Service *s) { r = service_spawn(s, s->control_command, - true, + s->timeout_start_usec, false, !s->permissions_start_only, !s->root_directory_start_only, @@ -2275,9 +1541,7 @@ static void service_enter_reload(Service *s) { return; fail: - log_warning_unit(UNIT(s)->id, - "%s failed to run 'reload' task: %s", - UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to run 'reload' task: %s", UNIT(s)->id, strerror(-r)); s->reload_result = SERVICE_FAILURE_RESOURCES; service_enter_running(s, SERVICE_SUCCESS); } @@ -2296,7 +1560,7 @@ static void service_run_next_control(Service *s) { r = service_spawn(s, s->control_command, - true, + IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD) ? s->timeout_start_usec : s->timeout_stop_usec, false, !s->permissions_start_only, !s->root_directory_start_only, @@ -2311,9 +1575,7 @@ static void service_run_next_control(Service *s) { return; fail: - log_warning_unit(UNIT(s)->id, - "%s failed to run next control task: %s", - UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to run next control task: %s", UNIT(s)->id, strerror(-r)); if (s->state == SERVICE_START_PRE) service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); @@ -2342,7 +1604,7 @@ static void service_run_next_main(Service *s) { r = service_spawn(s, s->main_command, - true, + s->timeout_start_usec, true, true, true, @@ -2358,62 +1620,19 @@ static void service_run_next_main(Service *s) { return; fail: - log_warning_unit(UNIT(s)->id, - "%s failed to run next main task: %s", UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to run next main task: %s", UNIT(s)->id, strerror(-r)); service_enter_stop(s, SERVICE_FAILURE_RESOURCES); } -static int service_start_limit_test(Service *s) { - assert(s); - - if (ratelimit_test(&s->start_limit)) - return 0; - - switch (s->start_limit_action) { - - case SERVICE_START_LIMIT_NONE: - log_warning_unit(UNIT(s)->id, - "%s start request repeated too quickly, refusing to start.", - UNIT(s)->id); - break; - - case SERVICE_START_LIMIT_REBOOT: { - _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; - int r; - - log_warning_unit(UNIT(s)->id, - "%s start request repeated too quickly, rebooting.", UNIT(s)->id); - - r = manager_add_job_by_name(UNIT(s)->manager, JOB_START, - SPECIAL_REBOOT_TARGET, JOB_REPLACE, - true, &error, NULL); - if (r < 0) - log_error_unit(UNIT(s)->id, - "Failed to reboot: %s.", bus_error_message(&error, r)); - - break; - } - - case SERVICE_START_LIMIT_REBOOT_FORCE: - log_warning_unit(UNIT(s)->id, - "%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id); - UNIT(s)->manager->exit_code = MANAGER_REBOOT; - break; +static int service_start_limit_test(Service *s) { + assert(s); - case SERVICE_START_LIMIT_REBOOT_IMMEDIATE: - log_warning_unit(UNIT(s)->id, - "%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id); - sync(); - reboot(RB_AUTOBOOT); - break; + if (ratelimit_test(&s->start_limit)) + return 0; - default: - log_error_unit(UNIT(s)->id, - "start limit action=%i", s->start_limit_action); - assert_not_reached("Unknown StartLimitAction."); - } + log_warning_unit(UNIT(s)->id, "start request repeated too quickly for %s", UNIT(s)->id); - return -ECANCELED; + return failure_action(UNIT(s)->manager, s->start_limit_action, s->reboot_arg); } static int service_start(Unit *u) { @@ -2463,6 +1682,12 @@ static int service_start(Unit *u) { s->main_pid_alien = false; s->forbid_restart = false; + free(s->status_text); + s->status_text = NULL; + s->status_errno = 0; + + s->notify_state = NOTIFY_UNKNOWN; + service_enter_start_pre(s); return 0; } @@ -2565,6 +1790,15 @@ static int service_serialize(Unit *u, FILE *f, FDSet *fds) { unit_serialize_item_format(u, f, "socket-fd", "%i", copy); } + if (s->bus_endpoint_fd >= 0) { + int copy; + + if ((copy = fdset_put_dup(fds, s->bus_endpoint_fd)) < 0) + return copy; + + unit_serialize_item_format(u, f, "endpoint-fd", "%i", copy); + } + if (s->main_exec_status.pid > 0) { unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); @@ -2674,11 +1908,18 @@ static int service_deserialize_item(Unit *u, const char *key, const char *value, if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) log_debug_unit(u->id, "Failed to parse socket-fd value %s", value); else { - - if (s->socket_fd >= 0) - close_nointr_nofail(s->socket_fd); + asynchronous_close(s->socket_fd); s->socket_fd = fdset_remove(fds, fd); } + } else if (streq(key, "endpoint-fd")) { + int fd; + + if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) + log_debug_unit(u->id, "Failed to parse endpoint-fd value %s", value); + else { + safe_close(s->bus_endpoint_fd); + s->bus_endpoint_fd = fdset_remove(fds, fd); + } } else if (streq(key, "main-exec-status-pid")) { pid_t pid; @@ -2748,11 +1989,6 @@ static bool service_check_gc(Unit *u) { control_pid_good(s) > 0) return true; -#ifdef HAVE_SYSV_COMPAT - if (s->is_sysv) - return true; -#endif - return false; } @@ -2761,7 +1997,7 @@ _pure_ static bool service_check_snapshot(Unit *u) { assert(s); - return (s->socket_fd < 0); + return s->socket_fd < 0; } static int service_retry_pid_file(Service *s) { @@ -2783,24 +2019,19 @@ static int service_retry_pid_file(Service *s) { static int service_watch_pid_file(Service *s) { int r; - log_debug_unit(UNIT(s)->id, - "Setting watch for %s's PID file %s", - UNIT(s)->id, s->pid_file_pathspec->path); + log_debug_unit(UNIT(s)->id, "Setting watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path); + r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io); if (r < 0) goto fail; /* the pidfile might have appeared just before we set the watch */ - log_debug_unit(UNIT(s)->id, - "Trying to read %s's PID file %s in case it changed", - UNIT(s)->id, s->pid_file_pathspec->path); + log_debug_unit(UNIT(s)->id, "Trying to read %s's PID file %s in case it changed", UNIT(s)->id, s->pid_file_pathspec->path); service_retry_pid_file(s); return 0; fail: - log_error_unit(UNIT(s)->id, - "Failed to set a watch for %s's PID file %s: %s", - UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r)); + log_error_unit(UNIT(s)->id, "Failed to set a watch for %s's PID file %s: %s", UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r)); service_unwatch_pid_file(s); return r; } @@ -2867,6 +2098,62 @@ fail: return 0; } +static void service_notify_cgroup_empty_event(Unit *u) { + Service *s = SERVICE(u); + + assert(u); + + log_debug_unit(u->id, "%s: cgroup is empty", u->id); + + switch (s->state) { + + /* Waiting for SIGCHLD is usually more interesting, + * because it includes return codes/signals. Which is + * why we ignore the cgroup events for most cases, + * except when we don't know pid which to expect the + * SIGCHLD for. */ + + case SERVICE_START: + case SERVICE_START_POST: + /* If we were hoping for the daemon to write its PID file, + * we can give up now. */ + if (s->pid_file_pathspec) { + log_warning_unit(u->id, "%s never wrote its PID file. Failing.", UNIT(s)->id); + + service_unwatch_pid_file(s); + if (s->state == SERVICE_START) + service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); + else + service_enter_stop(s, SERVICE_FAILURE_RESOURCES); + } + break; + + case SERVICE_RUNNING: + /* service_enter_running() will figure out what to do */ + service_enter_running(s, SERVICE_SUCCESS); + break; + + case SERVICE_STOP_SIGTERM: + case SERVICE_STOP_SIGKILL: + + if (main_pid_good(s) <= 0 && !control_pid_good(s)) + service_enter_stop_post(s, SERVICE_SUCCESS); + + break; + + case SERVICE_STOP_POST: + case SERVICE_FINAL_SIGTERM: + case SERVICE_FINAL_SIGKILL: + if (main_pid_good(s) <= 0 && !control_pid_good(s)) + service_enter_dead(s, SERVICE_SUCCESS, true); + + break; + + default: + ; + } +} + static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { Service *s = SERVICE(u); ServiceResult f; @@ -2938,9 +2225,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { /* There is another command to * * execute, so let's do that. */ - log_debug_unit(u->id, - "%s running next main command for state %s", - u->id, service_state_to_string(s->state)); + log_debug_unit(u->id, "%s running next main command for state %s", u->id, service_state_to_string(s->state)); service_run_next_main(s); } else { @@ -3000,8 +2285,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { s->control_pid = 0; if (s->control_command) { - exec_status_exit(&s->control_command->exec_status, - &s->exec_context, pid, code, status); + exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); if (s->control_command->ignore) f = SERVICE_SUCCESS; @@ -3026,9 +2310,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { /* There is another command to * * execute, so let's do that. */ - log_debug_unit(u->id, - "%s running next control command for state %s", - u->id, service_state_to_string(s->state)); + log_debug_unit(u->id, "%s running next control command for state %s", u->id, service_state_to_string(s->state)); service_run_next_control(s); } else { @@ -3038,9 +2320,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { s->control_command = NULL; s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; - log_debug_unit(u->id, - "%s got final SIGCHLD for state %s", - u->id, service_state_to_string(s->state)); + log_debug_unit(u->id, "%s got final SIGCHLD for state %s", u->id, service_state_to_string(s->state)); switch (s->state) { @@ -3144,6 +2424,18 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { /* Notify clients about changed exit status */ unit_add_to_dbus_queue(u); + + /* We got one SIGCHLD for the service, let's watch all + * processes that are now running of the service, and watch + * that. Among the PIDs we then watch will be children + * reassigned to us, which hopefully allows us to identify + * when all children are gone */ + unit_tidy_watch_pids(u, s->main_pid, s->control_pid); + unit_watch_all_pids(u); + + /* If the PID set is empty now, then let's finish this off */ + if (set_isempty(u->pids)) + service_notify_cgroup_empty_event(u); } static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { @@ -3156,40 +2448,32 @@ static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *us case SERVICE_START_PRE: case SERVICE_START: - log_warning_unit(UNIT(s)->id, - "%s %s operation timed out. Terminating.", - UNIT(s)->id, - s->state == SERVICE_START ? "start" : "start-pre"); + log_warning_unit(UNIT(s)->id, "%s %s operation timed out. Terminating.", UNIT(s)->id, s->state == SERVICE_START ? "start" : "start-pre"); service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); break; case SERVICE_START_POST: - log_warning_unit(UNIT(s)->id, - "%s start-post operation timed out. Stopping.", UNIT(s)->id); + log_warning_unit(UNIT(s)->id, "%s start-post operation timed out. Stopping.", UNIT(s)->id); service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); break; case SERVICE_RELOAD: - log_warning_unit(UNIT(s)->id, - "%s reload operation timed out. Stopping.", UNIT(s)->id); + log_warning_unit(UNIT(s)->id, "%s reload operation timed out. Stopping.", UNIT(s)->id); s->reload_result = SERVICE_FAILURE_TIMEOUT; service_enter_running(s, SERVICE_SUCCESS); break; case SERVICE_STOP: - log_warning_unit(UNIT(s)->id, - "%s stopping timed out. Terminating.", UNIT(s)->id); + log_warning_unit(UNIT(s)->id, "%s stopping timed out. Terminating.", UNIT(s)->id); service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); break; case SERVICE_STOP_SIGTERM: if (s->kill_context.send_sigkill) { - log_warning_unit(UNIT(s)->id, - "%s stop-sigterm timed out. Killing.", UNIT(s)->id); + log_warning_unit(UNIT(s)->id, "%s stop-sigterm timed out. Killing.", UNIT(s)->id); service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); } else { - log_warning_unit(UNIT(s)->id, - "%s stop-sigterm timed out. Skipping SIGKILL.", UNIT(s)->id); + log_warning_unit(UNIT(s)->id, "%s stop-sigterm timed out. Skipping SIGKILL.", UNIT(s)->id); service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); } @@ -3200,40 +2484,37 @@ static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *us * Must be something we cannot kill, so let's just be * weirded out and continue */ - log_warning_unit(UNIT(s)->id, - "%s still around after SIGKILL. Ignoring.", UNIT(s)->id); + log_warning_unit(UNIT(s)->id, "%s still around after SIGKILL. Ignoring.", UNIT(s)->id); service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); break; case SERVICE_STOP_POST: - log_warning_unit(UNIT(s)->id, - "%s stop-post timed out. Terminating.", UNIT(s)->id); + log_warning_unit(UNIT(s)->id, "%s stop-post timed out. Terminating.", UNIT(s)->id); service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); break; case SERVICE_FINAL_SIGTERM: if (s->kill_context.send_sigkill) { - log_warning_unit(UNIT(s)->id, - "%s stop-final-sigterm timed out. Killing.", UNIT(s)->id); + log_warning_unit(UNIT(s)->id, "%s stop-final-sigterm timed out. Killing.", UNIT(s)->id); service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); } else { - log_warning_unit(UNIT(s)->id, - "%s stop-final-sigterm timed out. Skipping SIGKILL. Entering failed mode.", - UNIT(s)->id); + log_warning_unit(UNIT(s)->id, "%s stop-final-sigterm timed out. Skipping SIGKILL. Entering failed mode.", UNIT(s)->id); service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); } break; case SERVICE_FINAL_SIGKILL: - log_warning_unit(UNIT(s)->id, - "%s still around after final SIGKILL. Entering failed mode.", UNIT(s)->id); + log_warning_unit(UNIT(s)->id, "%s still around after final SIGKILL. Entering failed mode.", UNIT(s)->id); service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); break; case SERVICE_AUTO_RESTART: log_info_unit(UNIT(s)->id, - "%s holdoff time over, scheduling restart.", UNIT(s)->id); + s->restart_usec > 0 ? + "%s holdoff time over, scheduling restart." : + "%s has no holdoff time, scheduling restart.", + UNIT(s)->id); service_enter_restart(s); break; @@ -3246,151 +2527,146 @@ static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *us static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { Service *s = SERVICE(userdata); + char t[FORMAT_TIMESPAN_MAX]; assert(s); assert(source == s->watchdog_event_source); - log_error_unit(UNIT(s)->id, "%s watchdog timeout!", UNIT(s)->id); + log_error_unit(UNIT(s)->id, "%s watchdog timeout (limit %s)!", UNIT(s)->id, + format_timespan(t, sizeof(t), s->watchdog_usec, 1)); + service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_WATCHDOG); return 0; } -static void service_notify_cgroup_empty_event(Unit *u) { - Service *s = SERVICE(u); - - assert(u); - - log_debug_unit(u->id, "%s: cgroup is empty", u->id); - - switch (s->state) { - - /* Waiting for SIGCHLD is usually more interesting, - * because it includes return codes/signals. Which is - * why we ignore the cgroup events for most cases, - * except when we don't know pid which to expect the - * SIGCHLD for. */ - - case SERVICE_START: - case SERVICE_START_POST: - /* If we were hoping for the daemon to write its PID file, - * we can give up now. */ - if (s->pid_file_pathspec) { - log_warning_unit(u->id, - "%s never wrote its PID file. Failing.", UNIT(s)->id); - service_unwatch_pid_file(s); - if (s->state == SERVICE_START) - service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); - else - service_enter_stop(s, SERVICE_FAILURE_RESOURCES); - } - break; - - case SERVICE_RUNNING: - /* service_enter_running() will figure out what to do */ - service_enter_running(s, SERVICE_SUCCESS); - break; - - case SERVICE_STOP_SIGTERM: - case SERVICE_STOP_SIGKILL: - - if (main_pid_good(s) <= 0 && !control_pid_good(s)) - service_enter_stop_post(s, SERVICE_SUCCESS); - - break; - - case SERVICE_STOP_POST: - case SERVICE_FINAL_SIGTERM: - case SERVICE_FINAL_SIGKILL: - if (main_pid_good(s) <= 0 && !control_pid_good(s)) - service_enter_dead(s, SERVICE_SUCCESS, true); - - break; - - default: - ; - } -} - static void service_notify_message(Unit *u, pid_t pid, char **tags) { Service *s = SERVICE(u); - const char *e; + _cleanup_free_ char *cc = NULL; bool notify_dbus = false; + const char *e; assert(u); - log_debug_unit(u->id, "%s: Got notification message from PID "PID_FMT" (%s...)", - u->id, pid, tags && *tags ? tags[0] : "(empty)"); + cc = strv_join(tags, ", "); + log_debug_unit(u->id, "%s: Got notification message from PID "PID_FMT" (%s)", + u->id, pid, isempty(cc) ? "n/a" : cc); if (s->notify_access == NOTIFY_NONE) { - log_warning_unit(u->id, - "%s: Got notification message from PID "PID_FMT", but reception is disabled.", - u->id, pid); + log_warning_unit(u->id, "%s: Got notification message from PID "PID_FMT", but reception is disabled.", u->id, pid); return; } - if (s->notify_access == NOTIFY_MAIN && s->main_pid != 0 && pid != s->main_pid) { - log_warning_unit(u->id, - "%s: Got notification message from PID "PID_FMT", but reception only permitted for PID "PID_FMT, - u->id, pid, s->main_pid); + if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { + if (s->main_pid != 0) + log_warning_unit(u->id, "%s: Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, u->id, pid, s->main_pid); + else + log_debug_unit(u->id, "%s: Got notification message from PID "PID_FMT", but reception only permitted for main PID which is currently not known", u->id, pid); return; } /* Interpret MAINPID= */ - if ((e = strv_find_prefix(tags, "MAINPID=")) && - (s->state == SERVICE_START || - s->state == SERVICE_START_POST || - s->state == SERVICE_RUNNING || - s->state == SERVICE_RELOAD)) { - - if (parse_pid(e + 8, &pid) < 0) - log_warning_unit(u->id, "Failed to parse notification message %s", e); + e = strv_find_startswith(tags, "MAINPID="); + if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) { + if (parse_pid(e, &pid) < 0) + log_warning_unit(u->id, "Failed to parse MAINPID= field in notification message: %s", e); else { - log_debug_unit(u->id, "%s: got %s", u->id, e); + log_debug_unit(u->id, "%s: got MAINPID=%s", u->id, e); + service_set_main_pid(s, pid); unit_watch_pid(UNIT(s), pid); notify_dbus = true; } } + /* Interpret RELOADING= */ + if (strv_find(tags, "RELOADING=1")) { + + log_debug_unit(u->id, "%s: got RELOADING=1", u->id); + s->notify_state = NOTIFY_RELOADING; + + if (s->state == SERVICE_RUNNING) + service_enter_reload_by_notify(s); + + notify_dbus = true; + } + /* Interpret READY= */ - if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START && strv_find(tags, "READY=1")) { + if (strv_find(tags, "READY=1")) { + log_debug_unit(u->id, "%s: got READY=1", u->id); - service_enter_start_post(s); + s->notify_state = NOTIFY_READY; + + /* Type=notify services inform us about completed + * initialization with READY=1 */ + if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START) + service_enter_start_post(s); + + /* Sending READY=1 while we are reloading informs us + * that the reloading is complete */ + if (s->state == SERVICE_RELOAD && s->control_pid == 0) + service_enter_running(s, SERVICE_SUCCESS); + + notify_dbus = true; + } + + /* Interpret STOPPING= */ + if (strv_find(tags, "STOPPING=1")) { + + log_debug_unit(u->id, "%s: got STOPPING=1", u->id); + s->notify_state = NOTIFY_STOPPING; + + if (s->state == SERVICE_RUNNING) + service_enter_stop_by_notify(s); + notify_dbus = true; } /* Interpret STATUS= */ - e = strv_find_prefix(tags, "STATUS="); + e = strv_find_startswith(tags, "STATUS="); if (e) { - char *t; + _cleanup_free_ char *t = NULL; - if (e[7]) { - if (!utf8_is_valid(e+7)) { + if (!isempty(e)) { + if (!utf8_is_valid(e)) log_warning_unit(u->id, "Status message in notification is not UTF-8 clean."); - return; - } + else { + log_debug_unit(u->id, "%s: got STATUS=%s", u->id, e); - log_debug_unit(u->id, "%s: got %s", u->id, e); - - t = strdup(e+7); - if (!t) { - log_oom(); - return; + t = strdup(e); + if (!t) + log_oom(); } - - } else - t = NULL; + } if (!streq_ptr(s->status_text, t)) { + free(s->status_text); s->status_text = t; + t = NULL; + notify_dbus = true; - } else - free(t); + } + } + + /* Interpret ERRNO= */ + e = strv_find_startswith(tags, "ERRNO="); + if (e) { + int status_errno; + + if (safe_atoi(e, &status_errno) < 0 || status_errno < 0) + log_warning_unit(u->id, "Failed to parse ERRNO= field in notification message: %s", e); + else { + log_debug_unit(u->id, "%s: got ERRNO=%s", u->id, e); + + if (s->status_errno != status_errno) { + s->status_errno = status_errno; + notify_dbus = true; + } + } } - /* Interpet WATCHDOG= */ + /* Interpret WATCHDOG= */ if (strv_find(tags, "WATCHDOG=1")) { log_debug_unit(u->id, "%s: got WATCHDOG=1", u->id); service_reset_watchdog(s); @@ -3415,176 +2691,6 @@ static int service_get_timeout(Unit *u, uint64_t *timeout) { return 1; } -#ifdef HAVE_SYSV_COMPAT - -static int service_enumerate(Manager *m) { - char **p; - unsigned i; - _cleanup_closedir_ DIR *d = NULL; - _cleanup_free_ char *path = NULL, *fpath = NULL, *name = NULL; - Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {}; - _cleanup_set_free_ Set *shutdown_services = NULL; - Unit *service; - Iterator j; - int r; - - assert(m); - - if (m->running_as != SYSTEMD_SYSTEM) - return 0; - - STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path) - for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) { - struct dirent *de; - - free(path); - path = strjoin(*p, "/", rcnd_table[i].path, NULL); - if (!path) { - r = -ENOMEM; - goto finish; - } - - if (d) - closedir(d); - - d = opendir(path); - if (!d) { - if (errno != ENOENT) - log_warning("opendir(%s) failed: %m", path); - - continue; - } - - while ((de = readdir(d))) { - int a, b; - - if (ignore_file(de->d_name)) - continue; - - if (de->d_name[0] != 'S' && de->d_name[0] != 'K') - continue; - - if (strlen(de->d_name) < 4) - continue; - - a = undecchar(de->d_name[1]); - b = undecchar(de->d_name[2]); - - if (a < 0 || b < 0) - continue; - - free(fpath); - fpath = strjoin(path, "/", de->d_name, NULL); - if (!fpath) { - r = -ENOMEM; - goto finish; - } - - if (access(fpath, X_OK) < 0) { - - if (errno != ENOENT) - log_warning("access() failed on %s: %m", fpath); - - continue; - } - - free(name); - name = sysv_translate_name(de->d_name + 3); - if (!name) { - r = log_oom(); - goto finish; - } - - r = manager_load_unit_prepare(m, name, NULL, NULL, &service); - if (r < 0) { - log_warning("Failed to prepare unit %s: %s", name, strerror(-r)); - continue; - } - - if (de->d_name[0] == 'S') { - - if (rcnd_table[i].type == RUNLEVEL_UP) { - SERVICE(service)->sysv_start_priority_from_rcnd = - MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd); - - SERVICE(service)->sysv_enabled = true; - } - - r = set_ensure_allocated(&runlevel_services[i], - trivial_hash_func, trivial_compare_func); - if (r < 0) - goto finish; - - r = set_put(runlevel_services[i], service); - if (r < 0) - goto finish; - - } else if (de->d_name[0] == 'K' && - (rcnd_table[i].type == RUNLEVEL_DOWN)) { - - r = set_ensure_allocated(&shutdown_services, - trivial_hash_func, trivial_compare_func); - if (r < 0) - goto finish; - - r = set_put(shutdown_services, service); - if (r < 0) - goto finish; - } - } - } - - /* Now we loaded all stubs and are aware of the lowest - start-up priority for all services, not let's actually load - the services, this will also tell us which services are - actually native now */ - manager_dispatch_load_queue(m); - - /* If this is a native service, rely on native ways to pull in - * a service, don't pull it in via sysv rcN.d links. */ - for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) - SET_FOREACH(service, runlevel_services[i], j) { - service = unit_follow_merge(service); - - if (service->fragment_path) - continue; - - r = unit_add_two_dependencies_by_name_inverse( - service, UNIT_AFTER, UNIT_WANTS, - rcnd_table[i].target, NULL, true); - if (r < 0) - goto finish; - } - - /* We honour K links only for halt/reboot. For the normal - * runlevels we assume the stop jobs will be implicitly added - * by the core logic. Also, we don't really distinguish here - * between the runlevels 0 and 6 and just add them to the - * special shutdown target. */ - SET_FOREACH(service, shutdown_services, j) { - service = unit_follow_merge(service); - - if (service->fragment_path) - continue; - - r = unit_add_two_dependencies_by_name( - service, UNIT_BEFORE, UNIT_CONFLICTS, - SPECIAL_SHUTDOWN_TARGET, NULL, true); - if (r < 0) - goto finish; - } - - r = 0; - -finish: - - for (i = 0; i < ELEMENTSOF(rcnd_table); i++) - set_free(runlevel_services[i]); - - return r; -} -#endif - static void service_bus_name_owner_change( Unit *u, const char *name, @@ -3601,17 +2707,11 @@ static void service_bus_name_owner_change( assert(old_owner || new_owner); if (old_owner && new_owner) - log_debug_unit(u->id, - "%s's D-Bus name %s changed owner from %s to %s", - u->id, name, old_owner, new_owner); + log_debug_unit(u->id, "%s's D-Bus name %s changed owner from %s to %s", u->id, name, old_owner, new_owner); else if (old_owner) - log_debug_unit(u->id, - "%s's D-Bus name %s no longer registered by %s", - u->id, name, old_owner); + log_debug_unit(u->id, "%s's D-Bus name %s no longer registered by %s", u->id, name, old_owner); else - log_debug_unit(u->id, - "%s's D-Bus name %s now registered by %s", - u->id, name, new_owner); + log_debug_unit(u->id, "%s's D-Bus name %s now registered by %s", u->id, name, new_owner); s->bus_name_good = !!new_owner; @@ -3736,9 +2836,10 @@ static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { [SERVICE_RESTART_NO] = "no", [SERVICE_RESTART_ON_SUCCESS] = "on-success", [SERVICE_RESTART_ON_FAILURE] = "on-failure", + [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", [SERVICE_RESTART_ON_ABORT] = "on-abort", - [SERVICE_RESTART_ALWAYS] = "always" + [SERVICE_RESTART_ALWAYS] = "always", }; DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); @@ -3773,6 +2874,15 @@ static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = { DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess); +static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { + [NOTIFY_UNKNOWN] = "unknown", + [NOTIFY_READY] = "ready", + [NOTIFY_RELOADING] = "reloading", + [NOTIFY_STOPPING] = "stopping", +}; + +DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); + static const char* const service_result_table[_SERVICE_RESULT_MAX] = { [SERVICE_SUCCESS] = "success", [SERVICE_FAILURE_RESOURCES] = "resources", @@ -3786,14 +2896,6 @@ static const char* const service_result_table[_SERVICE_RESULT_MAX] = { DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); -static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = { - [SERVICE_START_LIMIT_NONE] = "none", - [SERVICE_START_LIMIT_REBOOT] = "reboot", - [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force", - [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate" -}; -DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction); - const UnitVTable service_vtable = { .object_size = sizeof(Service), .exec_context_offset = offsetof(Service, exec_context), @@ -3847,11 +2949,6 @@ const UnitVTable service_vtable = { .bus_commit_properties = bus_service_commit_properties, .get_timeout = service_get_timeout, - -#ifdef HAVE_SYSV_COMPAT - .enumerate = service_enumerate, -#endif - .can_transient = true, .status_message_formats = {