X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fcore%2Fservice.c;h=08b929e4fe7af4b5ff4763c7177b9e13ef9f0460;hp=fd90ceba05917a7c89660efab7ffd11acdd32e00;hb=dc99a9764418a1974c46c55efa73b034f530a5a5;hpb=814cc562121270e2d5de0630b773792c74990a9c diff --git a/src/core/service.c b/src/core/service.c index fd90ceba0..08b929e4f 100644 --- a/src/core/service.c +++ b/src/core/service.c @@ -36,7 +36,7 @@ #include "unit-printf.h" #include "dbus-service.h" #include "special.h" -#include "bus-errors.h" +#include "dbus-common.h" #include "exit-status.h" #include "def.h" #include "path-util.h" @@ -141,6 +141,7 @@ static void service_init(Unit *u) { exec_context_init(&s->exec_context); kill_context_init(&s->kill_context); + cgroup_context_init(&s->cgroup_context); RATELIMIT_INIT(s->start_limit, 10*USEC_PER_SEC, 5); @@ -190,6 +191,8 @@ static int service_set_main_pid(Service *s, pid_t pid) { if (pid == getpid()) return -EINVAL; + service_unwatch_main_pid(s); + s->main_pid = pid; s->main_pid_known = true; @@ -220,7 +223,7 @@ static void service_close_socket_fd(Service *s) { static void service_connection_unref(Service *s) { assert(s); - if (!UNIT_DEREF(s->accept_socket)) + if (!UNIT_ISSET(s->accept_socket)) return; socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); @@ -235,7 +238,7 @@ static void service_stop_watchdog(Service *s) { s->watchdog_timestamp.monotonic = 0; } -static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart); +static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); static void service_handle_watchdog(Service *s) { usec_t offset; @@ -249,7 +252,7 @@ static void service_handle_watchdog(Service *s) { offset = now(CLOCK_MONOTONIC) - s->watchdog_timestamp.monotonic; if (offset >= s->watchdog_usec) { log_error_unit(UNIT(s)->id, "%s watchdog timeout!", UNIT(s)->id); - service_enter_dead(s, SERVICE_FAILURE_WATCHDOG, true); + service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_WATCHDOG); return; } @@ -283,7 +286,8 @@ static void service_done(Unit *u) { free(s->status_text); s->status_text = NULL; - exec_context_done(&s->exec_context); + cgroup_context_done(&s->cgroup_context); + exec_context_done(&s->exec_context, manager_is_reloading_or_reexecuting(u->manager)); exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); s->control_command = NULL; s->main_command = NULL; @@ -331,9 +335,6 @@ static char *sysv_translate_name(const char *name) { if (endswith(name, ".sh")) /* Drop .sh suffix */ strcpy(stpcpy(r, name) - 3, ".service"); - else if (startswith(name, "rc.")) - /* Drop rc. prefix */ - strcpy(stpcpy(r, name + 3), ".service"); else /* Normal init script name */ strcpy(stpcpy(r, name), ".service"); @@ -765,7 +766,7 @@ static int service_load_sysv_path(Service *s, const char *path) { continue; if (unit_name_to_type(m) == UNIT_SERVICE) - r = unit_add_name(u, m); + r = unit_merge_by_name(u, m); else /* NB: SysV targets * which are provided @@ -984,10 +985,8 @@ static int service_load_sysv_name(Service *s, const char *name) { assert(s); assert(name); - /* For SysV services we strip the rc.* and *.sh - * prefixes/suffixes. */ - if (startswith(name, "rc.") || - endswith(name, ".sh.service")) + /* 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) { @@ -1010,19 +1009,6 @@ static int service_load_sysv_name(Service *s, const char *name) { } free(path); - if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) { - /* Try rc.* init scripts */ - - path = strjoin(*p, "/rc.", name, NULL); - if (!path) - return -ENOMEM; - - /* Drop .service suffix */ - path[strlen(path)-8] = 0; - r = service_load_sysv_path(s, path); - free(path); - } - if (r < 0) return r; @@ -1127,6 +1113,12 @@ static int service_verify(Service *s) { 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); + 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); @@ -1166,6 +1158,16 @@ static int service_add_default_dependencies(Service *s) { SPECIAL_SOCKETS_TARGET, NULL, true); if (r < 0) return r; + + r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, + SPECIAL_TIMERS_TARGET, NULL, true); + if (r < 0) + return r; + + r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, + SPECIAL_PATHS_TARGET, NULL, true); + if (r < 0) + return r; } /* Second, activate normal shutdown */ @@ -1199,27 +1201,32 @@ static int service_load(Unit *u) { assert(s); /* Load a .service file */ - if ((r = unit_load_fragment(u)) < 0) + r = unit_load_fragment(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) - if ((r = service_load_sysv(s)) < 0) + 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; - /* We were able to load something, then let's add in the - * dropin directories. */ - if ((r = unit_load_dropin(unit_follow_merge(u))) < 0) - return r; - /* This is a new unit? Then let's add in some extras */ if (u->load_state == UNIT_LOADED) { + + /* We were able to load something, then let's add in + * the dropin directories. */ + r = unit_load_dropin(u); + if (r < 0) + return r; + if (s->type == _SERVICE_TYPE_INVALID) s->type = s->bus_name ? SERVICE_DBUS : SERVICE_SIMPLE; @@ -1233,7 +1240,7 @@ static int service_load(Unit *u) { if (r < 0) return r; - r = unit_add_default_cgroups(u); + r = unit_add_default_slice(u); if (r < 0) return r; @@ -1283,7 +1290,7 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) { ServiceExecCommand c; Service *s = SERVICE(u); const char *prefix2; - char _cleanup_free_ *p2 = NULL; + _cleanup_free_ char *p2 = NULL; assert(s); @@ -1381,7 +1388,7 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) { } static int service_load_pid_file(Service *s, bool may_warn) { - char _cleanup_free_ *k = NULL; + _cleanup_free_ char *k = NULL; int r; pid_t pid; @@ -1461,7 +1468,7 @@ static int service_search_main_pid(Service *s) { assert(s->main_pid <= 0); - pid = cgroup_bonding_search_main_pid_list(UNIT(s)->cgroup_bondings); + pid = unit_search_main_pid(UNIT(s)); if (pid <= 0) return -ENOENT; @@ -1474,6 +1481,9 @@ static int service_search_main_pid(Service *s) { 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 %lu from service %s", + (unsigned long) pid, UNIT(s)->id); return r; return 0; @@ -1583,7 +1593,7 @@ static void service_set_state(Service *s, ServiceState state) { /* For the inactive states unit_notify() will trim the cgroup, * but for exit we have to do that ourselves... */ if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0) - cgroup_bonding_trim_list(UNIT(s)->cgroup_bondings, true); + unit_destroy_cgroup(UNIT(s)); if (old_state != state) log_debug_unit(UNIT(s)->id, @@ -1615,6 +1625,7 @@ static int service_coldplug(Unit *u) { s->deserialized_state == SERVICE_FINAL_SIGTERM || s->deserialized_state == SERVICE_FINAL_SIGKILL || s->deserialized_state == SERVICE_AUTO_RESTART) { + if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_start_usec > 0) { usec_t k; @@ -1748,15 +1759,18 @@ static int service_spawn( pid_t pid; int r; int *fds = NULL; - int _cleanup_free_ *fdsbuf = NULL; + _cleanup_free_ int *fdsbuf = NULL; unsigned n_fds = 0, n_env = 0; - char _cleanup_strv_free_ + _cleanup_strv_free_ char **argv = NULL, **final_env = NULL, **our_env = NULL; + const char *path; assert(s); assert(c); assert(_pid); + unit_realize_cgroup(UNIT(s)); + if (pass_fds || s->exec_context.std_input == EXEC_INPUT_SOCKET || s->exec_context.std_output == EXEC_OUTPUT_SOCKET || @@ -1812,7 +1826,7 @@ static int service_spawn( goto fail; } - if (s->meta.manager->running_as != SYSTEMD_SYSTEM) + if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM) if (asprintf(our_env + n_env++, "MANAGERPID=%lu", (unsigned long) getpid()) < 0) { r = -ENOMEM; goto fail; @@ -1824,6 +1838,12 @@ static int service_spawn( goto fail; } + if (is_control && UNIT(s)->cgroup_path) { + path = strappenda(UNIT(s)->cgroup_path, "/control"); + cg_create(SYSTEMD_CGROUP_CONTROLLER, path); + } else + path = UNIT(s)->cgroup_path; + r = exec_spawn(c, argv, &s->exec_context, @@ -1833,9 +1853,8 @@ static int service_spawn( apply_chroot, apply_tty_stdin, UNIT(s)->manager->confirm_spawn, - UNIT(s)->cgroup_bondings, - UNIT(s)->cgroup_attributes, - is_control ? "control" : NULL, + UNIT(s)->cgroup_mask, + path, UNIT(s)->id, s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL, &pid); @@ -1870,7 +1889,7 @@ 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) + if (s->main_pid_alien && s->main_pid > 0) return kill(s->main_pid, 0) >= 0 || errno != ESRCH; /* .. otherwise assume we'll get a SIGCHLD for it, @@ -1883,7 +1902,7 @@ static int main_pid_good(Service *s) { return -EAGAIN; } -static int control_pid_good(Service *s) { +_pure_ static int control_pid_good(Service *s) { assert(s); return s->control_pid > 0; @@ -1894,7 +1913,10 @@ static int cgroup_good(Service *s) { assert(s); - r = cgroup_bonding_is_empty_list(UNIT(s)->cgroup_bondings); + if (!UNIT(s)->cgroup_path) + return 0; + + r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path, true); if (r < 0) return r; @@ -1915,6 +1937,7 @@ static void service_enter_dead(Service *s, ServiceResult f, bool allow_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_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 || @@ -1932,6 +1955,15 @@ 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 */ + exec_context_tmp_dirs_done(&s->exec_context); + + /* 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. */ + if (s->pid_file) + unlink_noerrno(s->pid_file); + return; fail: @@ -1941,8 +1973,6 @@ fail: service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); } -static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); - static void service_enter_stop_post(Service *s, ServiceResult f) { int r; assert(s); @@ -1972,7 +2002,7 @@ static void service_enter_stop_post(Service *s, ServiceResult f) { service_set_state(s, SERVICE_STOP_POST); } else - service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); + service_enter_dead(s, SERVICE_SUCCESS, true); return; @@ -2123,25 +2153,33 @@ fail: service_enter_stop(s, SERVICE_FAILURE_RESOURCES); } +static void service_kill_control_processes(Service *s) { + char *p; + + if (!UNIT(s)->cgroup_path) + return; + + p = strappenda(UNIT(s)->cgroup_path, "/control"); + cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, true, true, true, NULL); +} + static void service_enter_start(Service *s) { + ExecCommand *c; pid_t pid; int r; - ExecCommand *c; assert(s); assert(s->exec_command[SERVICE_EXEC_START]); assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT); - if (s->type == SERVICE_FORKING) - service_unwatch_control_pid(s); - else - service_unwatch_main_pid(s); + service_unwatch_control_pid(s); + service_unwatch_main_pid(s); /* We want to ensure that nobody leaks processes from * START_PRE here, so let's go on a killing spree, People * should not spawn long running processes from START_PRE. */ - cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control"); + service_kill_control_processes(s); if (s->type == SERVICE_FORKING) { s->control_command_id = SERVICE_EXEC_START; @@ -2217,11 +2255,9 @@ static void service_enter_start_pre(Service *s) { s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; if (s->control_command) { - /* Before we start anything, let's clear up what might * be left from previous runs. */ - cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, - true,true, NULL, "control"); + service_kill_control_processes(s); s->control_command_id = SERVICE_EXEC_START_PRE; @@ -2572,7 +2608,7 @@ static int service_reload(Unit *u) { return 0; } -static bool service_can_reload(Unit *u) { +_pure_ static bool service_can_reload(Unit *u) { Service *s = SERVICE(u); assert(s); @@ -2638,6 +2674,12 @@ static int service_serialize(Unit *u, FILE *f, FDSet *fds) { dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp); + if (s->exec_context.tmp_dir) + unit_serialize_item(u, f, "tmp-dir", s->exec_context.tmp_dir); + + if (s->exec_context.var_tmp_dir) + unit_serialize_item(u, f, "var-tmp-dir", s->exec_context.var_tmp_dir); + return 0; } @@ -2756,13 +2798,29 @@ static int service_deserialize_item(Unit *u, const char *key, const char *value, dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp); else if (streq(key, "watchdog-timestamp")) dual_timestamp_deserialize(value, &s->watchdog_timestamp); - else + else if (streq(key, "tmp-dir")) { + char *t; + + t = strdup(value); + if (!t) + return log_oom(); + + s->exec_context.tmp_dir = t; + } else if (streq(key, "var-tmp-dir")) { + char *t; + + t = strdup(value); + if (!t) + return log_oom(); + + s->exec_context.var_tmp_dir = t; + } else log_debug_unit(u->id, "Unknown serialization key '%s'", key); return 0; } -static UnitActiveState service_active_state(Unit *u) { +_pure_ static UnitActiveState service_active_state(Unit *u) { const UnitActiveState *table; assert(u); @@ -2798,7 +2856,7 @@ static bool service_check_gc(Unit *u) { return false; } -static bool service_check_snapshot(Unit *u) { +_pure_ static bool service_check_snapshot(Unit *u) { Service *s = SERVICE(u); assert(s); @@ -3023,7 +3081,6 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { } } else if (s->control_pid == pid) { - s->control_pid = 0; if (s->control_command) { @@ -3044,8 +3101,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { /* Immediately get rid of the cgroup, so that the * kernel doesn't delay the cgroup empty messages for * the service cgroup any longer than necessary */ - cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, - true, true, NULL, "control"); + service_kill_control_processes(s); if (s->control_command && s->control_command->command_next && @@ -3274,13 +3330,12 @@ static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) { } } -static void service_cgroup_notify_event(Unit *u) { +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); + log_debug_unit(u->id, "%s: cgroup is empty", u->id); switch (s->state) { @@ -3427,10 +3482,10 @@ static void service_notify_message(Unit *u, pid_t pid, char **tags) { static int service_enumerate(Manager *m) { char **p; unsigned i; - DIR _cleanup_closedir_ *d = NULL; - char _cleanup_free_ *path = NULL, *fpath = NULL, *name = NULL; - Set *runlevel_services[ELEMENTSOF(rcnd_table)]; - Set _cleanup_set_free_ *shutdown_services = NULL; + _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; @@ -3440,8 +3495,6 @@ static int service_enumerate(Manager *m) { if (m->running_as != SYSTEMD_SYSTEM) return 0; - zero(runlevel_services); - STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path) for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) { struct dirent *de; @@ -3711,6 +3764,7 @@ static void service_reset_failed(Unit *u) { static int service_kill(Unit *u, KillWho who, int signo, DBusError *error) { Service *s = SERVICE(u); + return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); } @@ -3738,6 +3792,7 @@ 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_WATCHDOG] = "on-watchdog", [SERVICE_RESTART_ON_ABORT] = "on-abort", [SERVICE_RESTART_ALWAYS] = "always" }; @@ -3803,8 +3858,9 @@ const UnitVTable service_vtable = { "Service\0" "Install\0", + .private_section = "Service", .exec_context_offset = offsetof(Service, exec_context), - .exec_section = "Service", + .cgroup_context_offset = offsetof(Service, cgroup_context), .init = service_init, .done = service_done, @@ -3837,7 +3893,7 @@ const UnitVTable service_vtable = { .reset_failed = service_reset_failed, - .cgroup_notify_empty = service_cgroup_notify_event, + .notify_cgroup_empty = service_notify_cgroup_empty_event, .notify_message = service_notify_message, .bus_name_owner_change = service_bus_name_owner_change, @@ -3846,6 +3902,10 @@ const UnitVTable service_vtable = { .bus_interface = "org.freedesktop.systemd1.Service", .bus_message_handler = bus_service_message_handler, .bus_invalidating_properties = bus_service_invalidating_properties, + .bus_set_property = bus_service_set_property, + .bus_commit_properties = bus_service_commit_properties, + + .can_transient = true, #ifdef HAVE_SYSV_COMPAT .enumerate = service_enumerate,