diff options
| author | Kay Sievers <kay@vrfy.org> | 2012-04-11 12:59:52 +0200 |
|---|---|---|
| committer | Kay Sievers <kay@vrfy.org> | 2012-04-11 16:03:51 +0200 |
| commit | b30e2f4c18ad81b04e4314fd191a5d458553773c (patch) | |
| tree | de15b901a08d681a7a1e95c7a2d692b0ec181708 /src/service.c | |
| parent | 9543ad166338a7bef8718070f11465df4b9badd7 (diff) | |
move libsystemd_core.la sources into core/
Diffstat (limited to 'src/service.c')
| -rw-r--r-- | src/service.c | 3797 |
1 files changed, 0 insertions, 3797 deletions
diff --git a/src/service.c b/src/service.c deleted file mode 100644 index bf2e0a9d98..0000000000 --- a/src/service.c +++ /dev/null @@ -1,3797 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <errno.h> -#include <signal.h> -#include <dirent.h> -#include <unistd.h> -#include <sys/reboot.h> - -#include "manager.h" -#include "unit.h" -#include "service.h" -#include "load-fragment.h" -#include "load-dropin.h" -#include "log.h" -#include "strv.h" -#include "unit-name.h" -#include "dbus-service.h" -#include "special.h" -#include "bus-errors.h" -#include "exit-status.h" -#include "def.h" -#include "util.h" -#include "utf8.h" - -#ifdef HAVE_SYSV_COMPAT - -#define DEFAULT_SYSV_TIMEOUT_USEC (5*USEC_PER_MINUTE) - -typedef enum RunlevelType { - RUNLEVEL_UP, - RUNLEVEL_DOWN, - RUNLEVEL_SYSINIT -} 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 }, - -#ifdef TARGET_SUSE - /* SUSE style boot.d */ - { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT }, -#endif - -#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM) - /* Debian style rcS.d */ - { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT }, -#endif - - /* 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/SYSINIT must be read before DOWN */ -}; - -#define RUNLEVELS_UP "12345" -/* #define RUNLEVELS_DOWN "06" */ -#define RUNLEVELS_BOOT "bBsS" -#endif - -static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { - [SERVICE_DEAD] = UNIT_INACTIVE, - [SERVICE_START_PRE] = UNIT_ACTIVATING, - [SERVICE_START] = UNIT_ACTIVATING, - [SERVICE_START_POST] = UNIT_ACTIVATING, - [SERVICE_RUNNING] = UNIT_ACTIVE, - [SERVICE_EXITED] = UNIT_ACTIVE, - [SERVICE_RELOAD] = UNIT_RELOADING, - [SERVICE_STOP] = UNIT_DEACTIVATING, - [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, - [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, - [SERVICE_STOP_POST] = UNIT_DEACTIVATING, - [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, - [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, - [SERVICE_FAILED] = UNIT_FAILED, - [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING -}; - -static void service_init(Unit *u) { - Service *s = SERVICE(u); - - assert(u); - assert(u->load_state == UNIT_STUB); - - s->timeout_usec = DEFAULT_TIMEOUT_USEC; - s->restart_usec = DEFAULT_RESTART_USEC; - - s->watchdog_watch.type = WATCH_INVALID; - - s->timer_watch.type = WATCH_INVALID; -#ifdef HAVE_SYSV_COMPAT - s->sysv_start_priority = -1; - s->sysv_start_priority_from_rcnd = -1; -#endif - s->socket_fd = -1; - s->guess_main_pid = true; - - exec_context_init(&s->exec_context); - - RATELIMIT_INIT(s->start_limit, 10*USEC_PER_SEC, 5); - - s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; -} - -static void service_unwatch_control_pid(Service *s) { - assert(s); - - if (s->control_pid <= 0) - return; - - unit_unwatch_pid(UNIT(s), s->control_pid); - s->control_pid = 0; -} - -static void service_unwatch_main_pid(Service *s) { - assert(s); - - if (s->main_pid <= 0) - return; - - unit_unwatch_pid(UNIT(s), s->main_pid); - s->main_pid = 0; -} - -static void service_unwatch_pid_file(Service *s) { - if (!s->pid_file_pathspec) - return; - - log_debug("Stopping watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path); - path_spec_unwatch(s->pid_file_pathspec, UNIT(s)); - path_spec_done(s->pid_file_pathspec); - free(s->pid_file_pathspec); - s->pid_file_pathspec = NULL; -} - -static int service_set_main_pid(Service *s, pid_t pid) { - pid_t ppid; - - assert(s); - - if (pid <= 1) - return -EINVAL; - - if (pid == getpid()) - return -EINVAL; - - s->main_pid = pid; - s->main_pid_known = true; - - if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) { - log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.", - UNIT(s)->id, (unsigned long) pid); - - s->main_pid_alien = true; - } else - s->main_pid_alien = false; - - exec_status_start(&s->main_exec_status, pid); - - return 0; -} - -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; -} - -static void service_connection_unref(Service *s) { - assert(s); - - if (!UNIT_DEREF(s->accept_socket)) - return; - - socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); - unit_ref_unset(&s->accept_socket); -} - -static void service_stop_watchdog(Service *s) { - assert(s); - - unit_unwatch_timer(UNIT(s), &s->watchdog_watch); - s->watchdog_timestamp.realtime = 0; - s->watchdog_timestamp.monotonic = 0; -} - -static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart); - -static void service_handle_watchdog(Service *s) { - usec_t offset; - int r; - - assert(s); - - if (s->watchdog_usec == 0) - return; - - offset = now(CLOCK_MONOTONIC) - s->watchdog_timestamp.monotonic; - if (offset >= s->watchdog_usec) { - log_error("%s watchdog timeout!", UNIT(s)->id); - service_enter_dead(s, SERVICE_FAILURE_WATCHDOG, true); - return; - } - - r = unit_watch_timer(UNIT(s), s->watchdog_usec - offset, &s->watchdog_watch); - if (r < 0) - log_warning("%s failed to install watchdog timer: %s", UNIT(s)->id, strerror(-r)); -} - -static void service_reset_watchdog(Service *s) { - assert(s); - - dual_timestamp_get(&s->watchdog_timestamp); - service_handle_watchdog(s); -} - -static void service_done(Unit *u) { - Service *s = SERVICE(u); - - assert(s); - - free(s->pid_file); - s->pid_file = NULL; - -#ifdef HAVE_SYSV_COMPAT - free(s->sysv_path); - s->sysv_path = NULL; - - free(s->sysv_runlevels); - s->sysv_runlevels = NULL; -#endif - - free(s->status_text); - s->status_text = NULL; - - exec_context_done(&s->exec_context); - exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); - s->control_command = NULL; - s->main_command = NULL; - - /* This will leak a process, but at least no memory or any of - * our resources */ - service_unwatch_main_pid(s); - service_unwatch_control_pid(s); - service_unwatch_pid_file(s); - - if (s->bus_name) { - unit_unwatch_bus_name(u, s->bus_name); - free(s->bus_name); - s->bus_name = NULL; - } - - service_close_socket_fd(s); - service_connection_unref(s); - - unit_ref_unset(&s->accept_socket); - - service_stop_watchdog(s); - - unit_unwatch_timer(u, &s->timer_watch); -} - -#ifdef HAVE_SYSV_COMPAT -static char *sysv_translate_name(const char *name) { - char *r; - - if (!(r = new(char, strlen(name) + sizeof(".service")))) - return NULL; - -#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM) - if (endswith(name, ".sh")) - /* Drop Debian-style .sh suffix */ - strcpy(stpcpy(r, name) - 3, ".service"); -#endif -#ifdef TARGET_SUSE - if (startswith(name, "boot.")) - /* Drop SuSE-style boot. prefix */ - strcpy(stpcpy(r, name + 5), ".service"); -#endif -#ifdef TARGET_FRUGALWARE - if (startswith(name, "rc.")) - /* Drop Frugalware-style rc. prefix */ - strcpy(stpcpy(r, name + 3), ".service"); -#endif - else - /* Normal init scripts */ - 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", SPECIAL_LOCAL_FS_TARGET, -#if defined(TARGET_MANDRIVA) || defined(TARGET_MAGEIA) -#else - /* Due to unfortunate name selection in Mandriva, - * $network is provided by network-up which is ordered - * after network which actually starts interfaces. - * To break the loop, just ignore it */ - "network", SPECIAL_NETWORK_TARGET, -#endif - "named", SPECIAL_NSS_LOOKUP_TARGET, - "portmap", SPECIAL_RPCBIND_TARGET, - "remote_fs", SPECIAL_REMOTE_FS_TARGET, - "syslog", SPECIAL_SYSLOG_TARGET, - "time", SPECIAL_TIME_SYNC_TARGET, - - /* common extensions */ - "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET, - "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE, - "null", NULL, - -#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM) - "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET, -#endif - -#ifdef TARGET_FEDORA - "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET, - "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET, - "httpd", SPECIAL_HTTP_DAEMON_TARGET, -#endif - -#ifdef TARGET_SUSE - "smtp", SPECIAL_MAIL_TRANSFER_AGENT_TARGET, -#endif - }; - - unsigned i; - char *r; - const char *n; - - assert(name); - assert(_r); - - n = *name == '$' ? name + 1 : name; - - for (i = 0; i < ELEMENTSOF(table); i += 2) { - - if (!streq(table[i], n)) - continue; - - if (!table[i+1]) - return 0; - - if (!(r = strdup(table[i+1]))) - return -ENOMEM; - - 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; -} - -static int sysv_fix_order(Service *s) { - Unit *other; - int r; - - assert(s); - - if (s->sysv_start_priority < 0) - 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) { - ExecCommand *c; - - assert(s); - assert(s->sysv_path); - - if (!(c = exec_command_new(s->sysv_path, "start"))) - return -ENOMEM; - exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c); - - if (!(c = exec_command_new(s->sysv_path, "stop"))) - return -ENOMEM; - exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c); - - if (!(c = exec_command_new(s->sysv_path, "reload"))) - return -ENOMEM; - exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c); - - return 0; -} - -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 - } state = NORMAL; - char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description; - struct stat st; - - assert(s); - assert(path); - - u = UNIT(s); - - if (!(f = fopen(path, "re"))) { - r = errno == ENOENT ? 0 : -errno; - goto finish; - } - - zero(st); - if (fstat(fileno(f), &st) < 0) { - r = -errno; - goto finish; - } - - free(s->sysv_path); - if (!(s->sysv_path = strdup(path))) { - r = -ENOMEM; - goto finish; - } - - s->sysv_mtime = timespec_load(&st.st_mtim); - - if (null_or_empty(&st)) { - u->load_state = UNIT_MASKED; - r = 0; - goto finish; - } - - while (!feof(f)) { - char l[LINE_MAX], *t; - - if (!fgets(l, sizeof(l), f)) { - if (feof(f)) - break; - - r = -errno; - log_error("Failed to read configuration file '%s': %s", path, strerror(-r)); - goto finish; - } - - line++; - - t = strstrip(l); - if (*t != '#') - 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("[%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("[%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("[%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 = join(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, file_name_from_path(path), &m); - free(n); - - if (r < 0) - goto finish; - - if (r == 0) - continue; - - if (unit_name_to_type(m) == UNIT_SERVICE) - r = unit_add_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("[%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, file_name_from_path(path), &m); - - if (r < 0) { - log_error("[%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("[%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 = join(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)) < 0) - goto finish; - if (s->sysv_runlevels && - chars_intersect(RUNLEVELS_BOOT, s->sysv_runlevels) && - chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) { - /* Service has both boot and "up" runlevels - configured. Kill the "up" ones. */ - delete_chars(s->sysv_runlevels, RUNLEVELS_UP); - } - - 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_usec = 0; - } else - s->timeout_usec = DEFAULT_SYSV_TIMEOUT_USEC; - - /* 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; - - if (UNIT(s)->manager->sysv_console) - s->exec_context.std_output = EXEC_OUTPUT_JOURNAL_AND_CONSOLE; - - s->exec_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; - } - - /* 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 boot.*, rc.* and *.sh - * prefixes/suffixes. */ -#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM) - if (endswith(name, ".sh.service")) - return -ENOENT; -#endif - -#ifdef TARGET_SUSE - if (startswith(name, "boot.")) - return -ENOENT; -#endif - -#ifdef TARGET_FRUGALWARE - if (startswith(name, "rc.")) - return -ENOENT; -#endif - - STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) { - char *path; - int r; - - path = join(*p, "/", name, NULL); - if (!path) - return -ENOMEM; - - assert(endswith(path, ".service")); - path[strlen(path)-8] = 0; - - r = service_load_sysv_path(s, path); - -#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM) - if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) { - /* Try Debian style *.sh source'able init scripts */ - strcat(path, ".sh"); - r = service_load_sysv_path(s, path); - } -#endif - free(path); - -#ifdef TARGET_SUSE - if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) { - /* Try SUSE style boot.* init scripts */ - - path = join(*p, "/boot.", name, NULL); - if (!path) - return -ENOMEM; - - /* Drop .service suffix */ - path[strlen(path)-8] = 0; - r = service_load_sysv_path(s, path); - free(path); - } -#endif - -#ifdef TARGET_FRUGALWARE - if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) { - /* Try Frugalware style rc.* init scripts */ - - path = join(*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); - } -#endif - - if (r < 0) - return r; - - if ((UNIT(s)->load_state != UNIT_STUB)) - break; - } - - 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 fsck_fix_order(Service *s) { - Unit *other; - int r; - - assert(s); - - if (s->fsck_passno <= 0) - return 0; - - /* For each pair of services where both have an fsck priority - * we order things based on it. */ - - LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) { - Service *t; - UnitDependency d; - - t = SERVICE(other); - - if (s == t) - continue; - - if (UNIT(t)->load_state != UNIT_LOADED) - continue; - - if (t->fsck_passno <= 0) - continue; - - if (t->fsck_passno < s->fsck_passno) - d = UNIT_AFTER; - else if (t->fsck_passno > s->fsck_passno) - d = UNIT_BEFORE; - else - continue; - - if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0) - return r; - } - - return 0; -} - -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("%s lacks ExecStart setting. Refusing.", UNIT(s)->id); - return -EINVAL; - } - - if (s->type != SERVICE_ONESHOT && - s->exec_command[SERVICE_EXEC_START]->command_next) { - log_error("%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_RELOAD]) { - log_error("%s has an ExecReload setting, which is not allowed for Type=oneshot services. Refusing.", UNIT(s)->id); - return -EINVAL; - } - - if (s->type == SERVICE_DBUS && !s->bus_name) { - log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id); - return -EINVAL; - } - - if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) { - log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id); - return -EINVAL; - } - - return 0; -} - -static int service_add_default_dependencies(Service *s) { - int r; - - assert(s); - - /* Add a number of automatic dependencies useful for the - * majority of services. */ - - /* First, pull in base system */ - if (UNIT(s)->manager->running_as == MANAGER_SYSTEM) { - - if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0) - return r; - - } else if (UNIT(s)->manager->running_as == MANAGER_USER) { - - if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0) - return r; - } - - /* Second, activate normal shutdown */ - return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); -} - -static void service_fix_output(Service *s) { - assert(s); - - /* If nothing has been explicitly configured, patch default - * output in. If input is socket/tty we avoid this however, - * since in that case we want output to default to the same - * place as we read input from. */ - - if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && - s->exec_context.std_output == EXEC_OUTPUT_INHERIT && - s->exec_context.std_input == EXEC_INPUT_NULL) - s->exec_context.std_error = UNIT(s)->manager->default_std_error; - - if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT && - s->exec_context.std_input == EXEC_INPUT_NULL) - s->exec_context.std_output = UNIT(s)->manager->default_std_output; -} - -static int service_load(Unit *u) { - int r; - Service *s = SERVICE(u); - - assert(s); - - /* Load a .service file */ - if ((r = unit_load_fragment(u)) < 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) - 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) { - service_fix_output(s); - - if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0) - return r; - - if ((r = unit_add_default_cgroups(u)) < 0) - return r; - -#ifdef HAVE_SYSV_COMPAT - if ((r = sysv_fix_order(s)) < 0) - return r; -#endif - - if ((r = fsck_fix_order(s)) < 0) - return r; - - if (s->bus_name) - if ((r = unit_watch_bus_name(u, s->bus_name)) < 0) - return r; - - if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE) - s->notify_access = NOTIFY_MAIN; - - if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE) - s->notify_access = NOTIFY_MAIN; - - if (s->type == SERVICE_DBUS || s->bus_name) - if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true)) < 0) - return r; - - if (UNIT(s)->default_dependencies) - if ((r = service_add_default_dependencies(s)) < 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; - char *p2; - - assert(s); - - p2 = strappend(prefix, "\t"); - prefix2 = p2 ? p2 : prefix; - - fprintf(f, - "%sService State: %s\n" - "%sResult: %s\n" - "%sReload Result: %s\n" - "%sPermissionsStartOnly: %s\n" - "%sRootDirectoryStartOnly: %s\n" - "%sRemainAfterExit: %s\n" - "%sGuessMainPID: %s\n" - "%sType: %s\n" - "%sRestart: %s\n" - "%sNotifyAccess: %s\n", - prefix, service_state_to_string(s->state), - prefix, service_result_to_string(s->result), - prefix, service_result_to_string(s->reload_result), - prefix, yes_no(s->permissions_start_only), - prefix, yes_no(s->root_directory_start_only), - prefix, yes_no(s->remain_after_exit), - 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)); - - if (s->control_pid > 0) - fprintf(f, - "%sControl PID: %lu\n", - prefix, (unsigned long) s->control_pid); - - if (s->main_pid > 0) - fprintf(f, - "%sMain PID: %lu\n" - "%sMain PID Known: %s\n" - "%sMain PID Alien: %s\n", - prefix, (unsigned long) s->main_pid, - prefix, yes_no(s->main_pid_known), - prefix, yes_no(s->main_pid_alien)); - - if (s->pid_file) - fprintf(f, - "%sPIDFile: %s\n", - prefix, s->pid_file); - - if (s->bus_name) - fprintf(f, - "%sBusName: %s\n" - "%sBus Name Good: %s\n", - prefix, s->bus_name, - prefix, yes_no(s->bus_name_good)); - - exec_context_dump(&s->exec_context, f, prefix); - - for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { - - if (!s->exec_command[c]) - continue; - - fprintf(f, "%s-> %s:\n", - prefix, service_exec_command_to_string(c)); - - exec_command_dump_list(s->exec_command[c], f, prefix2); - } - -#ifdef HAVE_SYSV_COMPAT - if (s->sysv_path) - fprintf(f, - "%sSysV Init Script Path: %s\n" - "%sSysV Init Script has LSB Header: %s\n" - "%sSysVEnabled: %s\n", - prefix, s->sysv_path, - 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->fsck_passno > 0) - fprintf(f, - "%sFsckPassNo: %i\n", - prefix, s->fsck_passno); - - if (s->status_text) - fprintf(f, "%sStatus Text: %s\n", - prefix, s->status_text); - - free(p2); -} - -static int service_load_pid_file(Service *s, bool may_warn) { - char *k; - int r; - pid_t pid; - - assert(s); - - if (!s->pid_file) - return -ENOENT; - - if ((r = read_one_line_file(s->pid_file, &k)) < 0) { - if (may_warn) - log_info("PID file %s not readable (yet?) after %s.", - s->pid_file, service_state_to_string(s->state)); - return r; - } - - r = parse_pid(k, &pid); - free(k); - - if (r < 0) - return r; - - if (kill(pid, 0) < 0 && errno != EPERM) { - if (may_warn) - log_info("PID %lu read from file %s does not exist.", - (unsigned long) pid, s->pid_file); - return -ESRCH; - } - - if (s->main_pid_known) { - if (pid == s->main_pid) - return 0; - - log_debug("Main PID changing: %lu -> %lu", - (unsigned long) s->main_pid, (unsigned long) pid); - service_unwatch_main_pid(s); - s->main_pid_known = false; - } else - log_debug("Main PID loaded: %lu", (unsigned long) pid); - - if ((r = service_set_main_pid(s, pid)) < 0) - return r; - - if ((r = unit_watch_pid(UNIT(s), pid)) < 0) - /* FIXME: we need to do something here */ - return r; - - return 0; -} - -static int service_search_main_pid(Service *s) { - pid_t pid; - int r; - - assert(s); - - /* If we know it anyway, don't ever fallback to unreliable - * heuristics */ - if (s->main_pid_known) - return 0; - - if (!s->guess_main_pid) - return 0; - - assert(s->main_pid <= 0); - - if ((pid = cgroup_bonding_search_main_pid_list(UNIT(s)->cgroup_bondings)) <= 0) - return -ENOENT; - - log_debug("Main PID guessed: %lu", (unsigned long) pid); - if ((r = service_set_main_pid(s, pid)) < 0) - return r; - - if ((r = unit_watch_pid(UNIT(s), pid)) < 0) - /* FIXME: we need to do something here */ - return r; - - return 0; -} - -static void service_notify_sockets_dead(Service *s, bool failed_permanent) { - Iterator i; - Unit *u; - - assert(s); - - /* Notifies all our sockets when we die */ - - if (s->socket_fd >= 0) - return; - - SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) - if (u->type == UNIT_SOCKET) - socket_notify_service_dead(SOCKET(u), failed_permanent); - - return; -} - -static void service_set_state(Service *s, ServiceState state) { - ServiceState old_state; - assert(s); - - old_state = s->state; - s->state = state; - - service_unwatch_pid_file(s); - - if (state != SERVICE_START_PRE && - state != SERVICE_START && - state != SERVICE_START_POST && - state != SERVICE_RELOAD && - state != SERVICE_STOP && - state != SERVICE_STOP_SIGTERM && - state != SERVICE_STOP_SIGKILL && - state != SERVICE_STOP_POST && - state != SERVICE_FINAL_SIGTERM && - state != SERVICE_FINAL_SIGKILL && - state != SERVICE_AUTO_RESTART) - unit_unwatch_timer(UNIT(s), &s->timer_watch); - - if (state != SERVICE_START && - state != SERVICE_START_POST && - state != SERVICE_RUNNING && - state != SERVICE_RELOAD && - state != SERVICE_STOP && - state != SERVICE_STOP_SIGTERM && - state != SERVICE_STOP_SIGKILL) { - service_unwatch_main_pid(s); - s->main_command = NULL; - } - - if (state != SERVICE_START_PRE && - state != SERVICE_START && - state != SERVICE_START_POST && - state != SERVICE_RELOAD && - state != SERVICE_STOP && - state != SERVICE_STOP_SIGTERM && - state != SERVICE_STOP_SIGKILL && - state != SERVICE_STOP_POST && - state != SERVICE_FINAL_SIGTERM && - state != SERVICE_FINAL_SIGKILL) { - service_unwatch_control_pid(s); - s->control_command = NULL; - s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; - } - - if (state == SERVICE_DEAD || - state == SERVICE_STOP || - state == SERVICE_STOP_SIGTERM || - state == SERVICE_STOP_SIGKILL || - state == SERVICE_STOP_POST || - state == SERVICE_FINAL_SIGTERM || - state == SERVICE_FINAL_SIGKILL || - state == SERVICE_FAILED || - state == SERVICE_AUTO_RESTART) - service_notify_sockets_dead(s, false); - - if (state != SERVICE_START_PRE && - state != SERVICE_START && - state != SERVICE_START_POST && - state != SERVICE_RUNNING && - state != SERVICE_RELOAD && - state != SERVICE_STOP && - state != SERVICE_STOP_SIGTERM && - state != SERVICE_STOP_SIGKILL && - state != SERVICE_STOP_POST && - state != SERVICE_FINAL_SIGTERM && - state != SERVICE_FINAL_SIGKILL && - !(state == SERVICE_DEAD && UNIT(s)->job)) { - service_close_socket_fd(s); - service_connection_unref(s); - } - - if (state == SERVICE_STOP) - service_stop_watchdog(s); - - /* 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); - - if (old_state != state) - log_debug("%s changed %s -> %s", UNIT(s)->id, service_state_to_string(old_state), service_state_to_string(state)); - - unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], s->reload_result == SERVICE_SUCCESS); - s->reload_result = SERVICE_SUCCESS; -} - -static int service_coldplug(Unit *u) { - Service *s = SERVICE(u); - int r; - - assert(s); - assert(s->state == SERVICE_DEAD); - - if (s->deserialized_state != s->state) { - - if (s->deserialized_state == SERVICE_START_PRE || - s->deserialized_state == SERVICE_START || - s->deserialized_state == SERVICE_START_POST || - s->deserialized_state == SERVICE_RELOAD || - s->deserialized_state == SERVICE_STOP || - s->deserialized_state == SERVICE_STOP_SIGTERM || - s->deserialized_state == SERVICE_STOP_SIGKILL || - s->deserialized_state == SERVICE_STOP_POST || - 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_usec > 0) { - usec_t k; - - k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec; - - if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0) - return r; - } - } - - if ((s->deserialized_state == SERVICE_START && - (s->type == SERVICE_FORKING || - s->type == SERVICE_DBUS || - s->type == SERVICE_ONESHOT || - s->type == SERVICE_NOTIFY)) || - s->deserialized_state == SERVICE_START_POST || - s->deserialized_state == SERVICE_RUNNING || - s->deserialized_state == SERVICE_RELOAD || - s->deserialized_state == SERVICE_STOP || - s->deserialized_state == SERVICE_STOP_SIGTERM || - s->deserialized_state == SERVICE_STOP_SIGKILL) - if (s->main_pid > 0) - if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0) - return r; - - if (s->deserialized_state == SERVICE_START_PRE || - s->deserialized_state == SERVICE_START || - s->deserialized_state == SERVICE_START_POST || - s->deserialized_state == SERVICE_RELOAD || - s->deserialized_state == SERVICE_STOP || - s->deserialized_state == SERVICE_STOP_SIGTERM || - s->deserialized_state == SERVICE_STOP_SIGKILL || - s->deserialized_state == SERVICE_STOP_POST || - s->deserialized_state == SERVICE_FINAL_SIGTERM || - s->deserialized_state == SERVICE_FINAL_SIGKILL) - if (s->control_pid > 0) - if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0) - return r; - - if (s->deserialized_state == SERVICE_START_POST || - s->deserialized_state == SERVICE_RUNNING) - service_handle_watchdog(s); - - service_set_state(s, s->deserialized_state); - } - return 0; -} - -static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) { - Iterator i; - int r; - int *rfds = NULL; - unsigned rn_fds = 0; - Unit *u; - - assert(s); - assert(fds); - assert(n_fds); - - if (s->socket_fd >= 0) - return 0; - - SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) { - int *cfds; - unsigned cn_fds; - Socket *sock; - - if (u->type != UNIT_SOCKET) - continue; - - sock = SOCKET(u); - - if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0) - goto fail; - - if (!cfds) - continue; - - if (!rfds) { - rfds = cfds; - rn_fds = cn_fds; - } else { - int *t; - - if (!(t = new(int, rn_fds+cn_fds))) { - free(cfds); - r = -ENOMEM; - goto fail; - } - - memcpy(t, rfds, rn_fds * sizeof(int)); - memcpy(t+rn_fds, cfds, cn_fds * sizeof(int)); - free(rfds); - free(cfds); - - rfds = t; - rn_fds = rn_fds+cn_fds; - } - } - - *fds = rfds; - *n_fds = rn_fds; - - return 0; - -fail: - free(rfds); - - return r; -} - -static int service_spawn( - Service *s, - ExecCommand *c, - bool timeout, - bool pass_fds, - bool apply_permissions, - bool apply_chroot, - bool apply_tty_stdin, - bool set_notify_socket, - pid_t *_pid) { - - pid_t pid; - int r; - int *fds = NULL, *fdsbuf = NULL; - unsigned n_fds = 0, n_env = 0; - char **argv = NULL, **final_env = NULL, **our_env = NULL; - - assert(s); - assert(c); - assert(_pid); - - if (pass_fds || - s->exec_context.std_input == EXEC_INPUT_SOCKET || - s->exec_context.std_output == EXEC_OUTPUT_SOCKET || - s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { - - if (s->socket_fd >= 0) { - fds = &s->socket_fd; - n_fds = 1; - } else { - if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0) - goto fail; - - fds = fdsbuf; - } - } - - if (timeout && s->timeout_usec) { - if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) - goto fail; - } else - unit_unwatch_timer(UNIT(s), &s->timer_watch); - - if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) { - r = -ENOMEM; - goto fail; - } - - if (!(our_env = new0(char*, 4))) { - r = -ENOMEM; - goto fail; - } - - if (set_notify_socket) - if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) { - r = -ENOMEM; - goto fail; - } - - if (s->main_pid > 0) - if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) { - r = -ENOMEM; - goto fail; - } - - if (s->watchdog_usec > 0) - if (asprintf(our_env + n_env++, "WATCHDOG_USEC=%llu", (unsigned long long) s->watchdog_usec) < 0) { - r = -ENOMEM; - goto fail; - } - - if (!(final_env = strv_env_merge(2, - UNIT(s)->manager->environment, - our_env, - NULL))) { - r = -ENOMEM; - goto fail; - } - - 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)->cgroup_bondings, - UNIT(s)->cgroup_attributes, - &pid); - - if (r < 0) - goto fail; - - - if ((r = unit_watch_pid(UNIT(s), pid)) < 0) - /* FIXME: we need to do something here */ - goto fail; - - free(fdsbuf); - strv_free(argv); - strv_free(our_env); - strv_free(final_env); - - *_pid = pid; - - return 0; - -fail: - free(fdsbuf); - strv_free(argv); - strv_free(our_env); - strv_free(final_env); - - if (timeout) - unit_unwatch_timer(UNIT(s), &s->timer_watch); - - return r; -} - -static int main_pid_good(Service *s) { - assert(s); - - /* Returns 0 if the pid is dead, 1 if it is good, -1 if we - * don't know */ - - /* If we know the pid file, then lets just check if it is - * still valid */ - if (s->main_pid_known) { - - /* If it's an alien child let's check if it is still - * alive ... */ - if (s->main_pid_alien) - return kill(s->main_pid, 0) >= 0 || errno != ESRCH; - - /* .. otherwise assume we'll get a SIGCHLD for it, - * which we really should wait for to collect exit - * status and code */ - return s->main_pid > 0; - } - - /* We don't know the pid */ - return -EAGAIN; -} - -static int control_pid_good(Service *s) { - assert(s); - - return s->control_pid > 0; -} - -static int cgroup_good(Service *s) { - int r; - - assert(s); - - if ((r = cgroup_bonding_is_empty_list(UNIT(s)->cgroup_bondings)) < 0) - return r; - - return !r; -} - -static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { - int r; - assert(s); - - if (f != SERVICE_SUCCESS) - s->result = f; - - 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_ABORT && (s->result == SERVICE_FAILURE_SIGNAL || - s->result == SERVICE_FAILURE_CORE_DUMP)))) { - - r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch); - if (r < 0) - goto fail; - - service_set_state(s, SERVICE_AUTO_RESTART); - } else - service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD); - - s->forbid_restart = false; - - return; - -fail: - log_warning("%s failed to run install restart timer: %s", UNIT(s)->id, strerror(-r)); - 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); - - if (f != SERVICE_SUCCESS) - s->result = f; - - service_unwatch_control_pid(s); - - if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) { - s->control_command_id = SERVICE_EXEC_STOP_POST; - - if ((r = service_spawn(s, - s->control_command, - true, - false, - !s->permissions_start_only, - !s->root_directory_start_only, - true, - false, - &s->control_pid)) < 0) - goto fail; - - - service_set_state(s, SERVICE_STOP_POST); - } else - service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); - - return; - -fail: - log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->id, strerror(-r)); - service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); -} - -static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { - int r; - Set *pid_set = NULL; - bool wait_for_exit = false; - - assert(s); - - if (f != SERVICE_SUCCESS) - s->result = f; - - if (s->exec_context.kill_mode != KILL_NONE) { - int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL; - - if (s->main_pid > 0) { - if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH) - log_warning("Failed to kill main process %li: %m", (long) s->main_pid); - else - wait_for_exit = !s->main_pid_alien; - } - - if (s->control_pid > 0) { - if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH) - log_warning("Failed to kill control process %li: %m", (long) s->control_pid); - else - wait_for_exit = true; - } - - if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) { - - if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) { - r = -ENOMEM; - goto fail; - } - - /* Exclude the main/control pids from being killed via the cgroup */ - if (s->main_pid > 0) - if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) - goto fail; - - if (s->control_pid > 0) - if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) - goto fail; - - if ((r = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, sig, true, pid_set)) < 0) { - if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) - log_warning("Failed to kill control group: %s", strerror(-r)); - } else if (r > 0) - wait_for_exit = true; - - set_free(pid_set); - pid_set = NULL; - } - } - - if (wait_for_exit) { - if (s->timeout_usec > 0) - if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) - goto fail; - - service_set_state(s, state); - } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL) - service_enter_stop_post(s, SERVICE_SUCCESS); - else - service_enter_dead(s, SERVICE_SUCCESS, true); - - return; - -fail: - log_warning("%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); - else - service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); - - if (pid_set) - set_free(pid_set); -} - -static void service_enter_stop(Service *s, ServiceResult f) { - int r; - - assert(s); - - if (f != SERVICE_SUCCESS) - s->result = f; - - service_unwatch_control_pid(s); - - if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) { - s->control_command_id = SERVICE_EXEC_STOP; - - if ((r = service_spawn(s, - s->control_command, - true, - false, - !s->permissions_start_only, - !s->root_directory_start_only, - false, - false, - &s->control_pid)) < 0) - goto fail; - - service_set_state(s, SERVICE_STOP); - } else - service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); - - return; - -fail: - log_warning("%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r)); - service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); -} - -static void service_enter_running(Service *s, ServiceResult f) { - int main_pid_ok, cgroup_ok; - assert(s); - - if (f != SERVICE_SUCCESS) - s->result = f; - - main_pid_ok = main_pid_good(s); - 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) - service_set_state(s, SERVICE_EXITED); - else - service_enter_stop(s, SERVICE_SUCCESS); -} - -static void service_enter_start_post(Service *s) { - int r; - assert(s); - - service_unwatch_control_pid(s); - - if (s->watchdog_usec > 0) - service_reset_watchdog(s); - - if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) { - s->control_command_id = SERVICE_EXEC_START_POST; - - if ((r = service_spawn(s, - s->control_command, - true, - false, - !s->permissions_start_only, - !s->root_directory_start_only, - false, - false, - &s->control_pid)) < 0) - goto fail; - - service_set_state(s, SERVICE_START_POST); - } else - service_enter_running(s, SERVICE_SUCCESS); - - return; - -fail: - log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r)); - service_enter_stop(s, SERVICE_FAILURE_RESOURCES); -} - -static void service_enter_start(Service *s) { - 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); - - /* 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, NULL); - - if (s->type == SERVICE_FORKING) { - s->control_command_id = SERVICE_EXEC_START; - c = s->control_command = s->exec_command[SERVICE_EXEC_START]; - - s->main_command = NULL; - } else { - s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; - s->control_command = NULL; - - c = s->main_command = s->exec_command[SERVICE_EXEC_START]; - } - - if ((r = service_spawn(s, - c, - s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY, - true, - true, - true, - true, - s->notify_access != NOTIFY_NONE, - &pid)) < 0) - goto fail; - - if (s->type == SERVICE_SIMPLE) { - /* For simple services we immediately start - * the START_POST binaries. */ - - service_set_main_pid(s, pid); - service_enter_start_post(s); - - } else if (s->type == SERVICE_FORKING) { - - /* For forking services we wait until the start - * process exited. */ - - s->control_pid = pid; - service_set_state(s, SERVICE_START); - - } else if (s->type == SERVICE_ONESHOT || - s->type == SERVICE_DBUS || - s->type == SERVICE_NOTIFY) { - - /* For oneshot services we wait until the start - * process exited, too, but it is our main process. */ - - /* For D-Bus services we know the main pid right away, - * but wait for the bus name to appear on the - * bus. Notify services are similar. */ - - service_set_main_pid(s, pid); - service_set_state(s, SERVICE_START); - } else - assert_not_reached("Unknown service type"); - - return; - -fail: - log_warning("%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r)); - service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); -} - -static void service_enter_start_pre(Service *s) { - int r; - - assert(s); - - service_unwatch_control_pid(s); - - if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) { - - /* 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, NULL); - - s->control_command_id = SERVICE_EXEC_START_PRE; - - if ((r = service_spawn(s, - s->control_command, - true, - false, - !s->permissions_start_only, - !s->root_directory_start_only, - true, - false, - &s->control_pid)) < 0) - goto fail; - - service_set_state(s, SERVICE_START_PRE); - } else - service_enter_start(s); - - return; - -fail: - log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r)); - service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); -} - -static void service_enter_restart(Service *s) { - int r; - DBusError error; - - assert(s); - dbus_error_init(&error); - - if (UNIT(s)->job) { - log_info("Job pending for unit, delaying automatic restart."); - - if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0) - goto fail; - } - - /* Any units that are bound to this service must also be - * restarted. We use JOB_RESTART (instead of the more obvious - * JOB_START) here so that those dependency jobs will be added - * as well. */ - r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL); - if (r < 0) - goto fail; - - log_debug("%s scheduled restart job.", UNIT(s)->id); - return; - -fail: - log_warning("%s failed to schedule restart job: %s", UNIT(s)->id, bus_error(&error, -r)); - service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); - - dbus_error_free(&error); -} - -static void service_enter_reload(Service *s) { - int r; - - assert(s); - - service_unwatch_control_pid(s); - - if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) { - s->control_command_id = SERVICE_EXEC_RELOAD; - - if ((r = service_spawn(s, - s->control_command, - true, - false, - !s->permissions_start_only, - !s->root_directory_start_only, - false, - false, - &s->control_pid)) < 0) - goto fail; - - service_set_state(s, SERVICE_RELOAD); - } else - service_enter_running(s, SERVICE_SUCCESS); - - return; - -fail: - log_warning("%s failed to run 'reload' task: %s", UNIT(s)->id, strerror(-r)); - s->reload_result = SERVICE_FAILURE_RESOURCES; - service_enter_running(s, SERVICE_SUCCESS); -} - -static void service_run_next_control(Service *s) { - int r; - - assert(s); - assert(s->control_command); - assert(s->control_command->command_next); - - assert(s->control_command_id != SERVICE_EXEC_START); - - s->control_command = s->control_command->command_next; - service_unwatch_control_pid(s); - - if ((r = service_spawn(s, - s->control_command, - true, - false, - !s->permissions_start_only, - !s->root_directory_start_only, - s->control_command_id == SERVICE_EXEC_START_PRE || - s->control_command_id == SERVICE_EXEC_STOP_POST, - false, - &s->control_pid)) < 0) - goto fail; - - return; - -fail: - log_warning("%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); - else if (s->state == SERVICE_STOP) - service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); - else if (s->state == SERVICE_STOP_POST) - service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); - else if (s->state == SERVICE_RELOAD) { - s->reload_result = SERVICE_FAILURE_RESOURCES; - service_enter_running(s, SERVICE_SUCCESS); - } else - service_enter_stop(s, SERVICE_FAILURE_RESOURCES); -} - -static void service_run_next_main(Service *s) { - pid_t pid; - int r; - - assert(s); - assert(s->main_command); - assert(s->main_command->command_next); - assert(s->type == SERVICE_ONESHOT); - - s->main_command = s->main_command->command_next; - service_unwatch_main_pid(s); - - if ((r = service_spawn(s, - s->main_command, - false, - true, - true, - true, - true, - s->notify_access != NOTIFY_NONE, - &pid)) < 0) - goto fail; - - service_set_main_pid(s, pid); - - return; - -fail: - log_warning("%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("%s start request repeated too quickly, refusing to start.", UNIT(s)->id); - break; - - case SERVICE_START_LIMIT_REBOOT: { - DBusError error; - int r; - - dbus_error_init(&error); - - log_warning("%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("Failed to reboot: %s.", bus_error(&error, r)); - dbus_error_free(&error); - } - - break; - } - - case SERVICE_START_LIMIT_REBOOT_FORCE: - log_warning("%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id); - UNIT(s)->manager->exit_code = MANAGER_REBOOT; - break; - - case SERVICE_START_LIMIT_REBOOT_IMMEDIATE: - log_warning("%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id); - reboot(RB_AUTOBOOT); - break; - - default: - log_error("start limit action=%i", s->start_limit_action); - assert_not_reached("Unknown StartLimitAction."); - } - - return -ECANCELED; -} - -static int service_start(Unit *u) { - Service *s = SERVICE(u); - int r; - - assert(s); - - /* We cannot fulfill this request right now, try again later - * please! */ - if (s->state == SERVICE_STOP || - s->state == SERVICE_STOP_SIGTERM || - s->state == SERVICE_STOP_SIGKILL || - s->state == SERVICE_STOP_POST || - s->state == SERVICE_FINAL_SIGTERM || - s->state == SERVICE_FINAL_SIGKILL) - return -EAGAIN; - - /* Already on it! */ - if (s->state == SERVICE_START_PRE || - s->state == SERVICE_START || - s->state == SERVICE_START_POST) - return 0; - - assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART); - - /* Make sure we don't enter a busy loop of some kind. */ - r = service_start_limit_test(s); - if (r < 0) { - service_notify_sockets_dead(s, true); - return r; - } - - s->result = SERVICE_SUCCESS; - s->reload_result = SERVICE_SUCCESS; - s->main_pid_known = false; - s->main_pid_alien = false; - s->forbid_restart = false; - - service_enter_start_pre(s); - return 0; -} - -static int service_stop(Unit *u) { - Service *s = SERVICE(u); - - assert(s); - - /* This is a user request, so don't do restarts on this - * shutdown. */ - s->forbid_restart = true; - - /* Already on it */ - if (s->state == SERVICE_STOP || - s->state == SERVICE_STOP_SIGTERM || - s->state == SERVICE_STOP_SIGKILL || - s->state == SERVICE_STOP_POST || - s->state == SERVICE_FINAL_SIGTERM || - s->state == SERVICE_FINAL_SIGKILL) - return 0; - - /* Don't allow a restart */ - if (s->state == SERVICE_AUTO_RESTART) { - service_set_state(s, SERVICE_DEAD); - return 0; - } - - /* If there's already something running we go directly into - * kill mode. */ - if (s->state == SERVICE_START_PRE || - s->state == SERVICE_START || - s->state == SERVICE_START_POST || - s->state == SERVICE_RELOAD) { - service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); - return 0; - } - - assert(s->state == SERVICE_RUNNING || - s->state == SERVICE_EXITED); - - service_enter_stop(s, SERVICE_SUCCESS); - return 0; -} - -static int service_reload(Unit *u) { - Service *s = SERVICE(u); - - assert(s); - - assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED); - - service_enter_reload(s); - return 0; -} - -static bool service_can_reload(Unit *u) { - Service *s = SERVICE(u); - - assert(s); - - return !!s->exec_command[SERVICE_EXEC_RELOAD]; -} - -static int service_serialize(Unit *u, FILE *f, FDSet *fds) { - Service *s = SERVICE(u); - - assert(u); - assert(f); - assert(fds); - - unit_serialize_item(u, f, "state", service_state_to_string(s->state)); - unit_serialize_item(u, f, "result", service_result_to_string(s->result)); - unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result)); - - if (s->control_pid > 0) - unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid); - - if (s->main_pid_known && s->main_pid > 0) - unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid); - - unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known)); - - if (s->status_text) - unit_serialize_item(u, f, "status-text", s->status_text); - - /* FIXME: There's a minor uncleanliness here: if there are - * multiple commands attached here, we will start from the - * first one again */ - if (s->control_command_id >= 0) - unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id)); - - if (s->socket_fd >= 0) { - int copy; - - if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0) - return copy; - - unit_serialize_item_format(u, f, "socket-fd", "%i", copy); - } - - if (s->main_exec_status.pid > 0) { - unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid); - dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); - dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); - - if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { - unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code); - unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status); - } - } - if (dual_timestamp_is_set(&s->watchdog_timestamp)) - dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp); - - return 0; -} - -static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { - Service *s = SERVICE(u); - - assert(u); - assert(key); - assert(value); - assert(fds); - - if (streq(key, "state")) { - ServiceState state; - - if ((state = service_state_from_string(value)) < 0) - log_debug("Failed to parse state value %s", value); - else - s->deserialized_state = state; - } else if (streq(key, "result")) { - ServiceResult f; - - f = service_result_from_string(value); - if (f < 0) - log_debug("Failed to parse result value %s", value); - else if (f != SERVICE_SUCCESS) - s->result = f; - - } else if (streq(key, "reload-result")) { - ServiceResult f; - - f = service_result_from_string(value); - if (f < 0) - log_debug("Failed to parse reload result value %s", value); - else if (f != SERVICE_SUCCESS) - s->reload_result = f; - - } else if (streq(key, "control-pid")) { - pid_t pid; - - if (parse_pid(value, &pid) < 0) - log_debug("Failed to parse control-pid value %s", value); - else - s->control_pid = pid; - } else if (streq(key, "main-pid")) { - pid_t pid; - - if (parse_pid(value, &pid) < 0) - log_debug("Failed to parse main-pid value %s", value); - else - service_set_main_pid(s, (pid_t) pid); - } else if (streq(key, "main-pid-known")) { - int b; - - if ((b = parse_boolean(value)) < 0) - log_debug("Failed to parse main-pid-known value %s", value); - else - s->main_pid_known = b; - } else if (streq(key, "status-text")) { - char *t; - - if ((t = strdup(value))) { - free(s->status_text); - s->status_text = t; - } - - } else if (streq(key, "control-command")) { - ServiceExecCommand id; - - if ((id = service_exec_command_from_string(value)) < 0) - log_debug("Failed to parse exec-command value %s", value); - else { - s->control_command_id = id; - s->control_command = s->exec_command[id]; - } - } else if (streq(key, "socket-fd")) { - int fd; - - if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) - log_debug("Failed to parse socket-fd value %s", value); - else { - - if (s->socket_fd >= 0) - close_nointr_nofail(s->socket_fd); - s->socket_fd = fdset_remove(fds, fd); - } - } else if (streq(key, "main-exec-status-pid")) { - pid_t pid; - - if (parse_pid(value, &pid) < 0) - log_debug("Failed to parse main-exec-status-pid value %s", value); - else - s->main_exec_status.pid = pid; - } else if (streq(key, "main-exec-status-code")) { - int i; - - if (safe_atoi(value, &i) < 0) - log_debug("Failed to parse main-exec-status-code value %s", value); - else - s->main_exec_status.code = i; - } else if (streq(key, "main-exec-status-status")) { - int i; - - if (safe_atoi(value, &i) < 0) - log_debug("Failed to parse main-exec-status-status value %s", value); - else - s->main_exec_status.status = i; - } else if (streq(key, "main-exec-status-start")) - dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp); - else if (streq(key, "main-exec-status-exit")) - dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp); - else if (streq(key, "watchdog-timestamp")) - dual_timestamp_deserialize(value, &s->watchdog_timestamp); - else - log_debug("Unknown serialization key '%s'", key); - - return 0; -} - -static UnitActiveState service_active_state(Unit *u) { - assert(u); - - return state_translation_table[SERVICE(u)->state]; -} - -static const char *service_sub_state_to_string(Unit *u) { - assert(u); - - return service_state_to_string(SERVICE(u)->state); -} - -static bool service_check_gc(Unit *u) { - Service *s = SERVICE(u); - - assert(s); - - /* Never clean up services that still have a process around, - * even if the service is formally dead. */ - if (cgroup_good(s) > 0 || - main_pid_good(s) > 0 || - control_pid_good(s) > 0) - return true; - -#ifdef HAVE_SYSV_COMPAT - if (s->sysv_path) - return true; -#endif - - return false; -} - -static bool service_check_snapshot(Unit *u) { - Service *s = SERVICE(u); - - assert(s); - - return !s->got_socket_fd; -} - -static int service_retry_pid_file(Service *s) { - int r; - - assert(s->pid_file); - assert(s->state == SERVICE_START || s->state == SERVICE_START_POST); - - r = service_load_pid_file(s, false); - if (r < 0) - return r; - - service_unwatch_pid_file(s); - - service_enter_running(s, SERVICE_SUCCESS); - return 0; -} - -static int service_watch_pid_file(Service *s) { - int r; - - log_debug("Setting watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path); - r = path_spec_watch(s->pid_file_pathspec, UNIT(s)); - if (r < 0) - goto fail; - - /* the pidfile might have appeared just before we set the watch */ - service_retry_pid_file(s); - - return 0; -fail: - log_error("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; -} - -static int service_demand_pid_file(Service *s) { - PathSpec *ps; - - assert(s->pid_file); - assert(!s->pid_file_pathspec); - - ps = new0(PathSpec, 1); - if (!ps) - return -ENOMEM; - - ps->path = strdup(s->pid_file); - if (!ps->path) { - free(ps); - return -ENOMEM; - } - - path_kill_slashes(ps->path); - - /* PATH_CHANGED would not be enough. There are daemons (sendmail) that - * keep their PID file open all the time. */ - ps->type = PATH_MODIFIED; - ps->inotify_fd = -1; - - s->pid_file_pathspec = ps; - - return service_watch_pid_file(s); -} - -static void service_fd_event(Unit *u, int fd, uint32_t events, Watch *w) { - Service *s = SERVICE(u); - - assert(s); - assert(fd >= 0); - assert(s->state == SERVICE_START || s->state == SERVICE_START_POST); - assert(s->pid_file_pathspec); - assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); - - log_debug("inotify event for %s", u->id); - - if (path_spec_fd_event(s->pid_file_pathspec, events) < 0) - goto fail; - - if (service_retry_pid_file(s) == 0) - return; - - if (service_watch_pid_file(s) < 0) - goto fail; - - return; -fail: - service_unwatch_pid_file(s); - service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); -} - -static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { - Service *s = SERVICE(u); - ServiceResult f; - - assert(s); - assert(pid >= 0); - - if (UNIT(s)->fragment_path ? is_clean_exit(code, status) : is_clean_exit_lsb(code, status)) - f = SERVICE_SUCCESS; - else if (code == CLD_EXITED) - f = SERVICE_FAILURE_EXIT_CODE; - else if (code == CLD_KILLED) - f = SERVICE_FAILURE_SIGNAL; - else if (code == CLD_DUMPED) - f = SERVICE_FAILURE_CORE_DUMP; - else - assert_not_reached("Unknown code"); - - if (s->main_pid == pid) { - /* Forking services may occasionally move to a new PID. - * As long as they update the PID file before exiting the old - * PID, they're fine. */ - if (service_load_pid_file(s, false) == 0) - return; - - s->main_pid = 0; - exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); - - /* If this is not a forking service than the main - * process got started and hence we copy the exit - * status so that it is recorded both as main and as - * control process exit status */ - if (s->main_command) { - s->main_command->exec_status = s->main_exec_status; - - if (s->main_command->ignore) - f = SERVICE_SUCCESS; - } - - log_full(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, - "%s: main process exited, code=%s, status=%i", u->id, sigchld_code_to_string(code), status); - - if (f != SERVICE_SUCCESS) - s->result = f; - - if (s->main_command && - s->main_command->command_next && - f == SERVICE_SUCCESS) { - - /* There is another command to * - * execute, so let's do that. */ - - log_debug("%s running next main command for state %s", u->id, service_state_to_string(s->state)); - service_run_next_main(s); - - } else { - - /* The service exited, so the service is officially - * gone. */ - s->main_command = NULL; - - switch (s->state) { - - case SERVICE_START_POST: - case SERVICE_RELOAD: - case SERVICE_STOP: - /* Need to wait until the operation is - * done */ - break; - - case SERVICE_START: - if (s->type == SERVICE_ONESHOT) { - /* This was our main goal, so let's go on */ - if (f == SERVICE_SUCCESS) - service_enter_start_post(s); - else - service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); - break; - } else { - assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY); - - /* Fall through */ - } - - case SERVICE_RUNNING: - service_enter_running(s, f); - break; - - case SERVICE_STOP_SIGTERM: - case SERVICE_STOP_SIGKILL: - - if (!control_pid_good(s)) - service_enter_stop_post(s, f); - - /* If there is still a control process, wait for that first */ - break; - - default: - assert_not_reached("Uh, main process died at wrong time."); - } - } - - } else if (s->control_pid == pid) { - - s->control_pid = 0; - - if (s->control_command) { - exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); - - if (s->control_command->ignore) - f = SERVICE_SUCCESS; - } - - log_full(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, - "%s: control process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status); - - if (f != SERVICE_SUCCESS) - s->result = f; - - if (s->control_command && - s->control_command->command_next && - f == SERVICE_SUCCESS) { - - /* There is another command to * - * execute, so let's do that. */ - - log_debug("%s running next control command for state %s", u->id, service_state_to_string(s->state)); - service_run_next_control(s); - - } else { - /* No further commands for this step, so let's - * figure out what to do next */ - - s->control_command = NULL; - s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; - - log_debug("%s got final SIGCHLD for state %s", u->id, service_state_to_string(s->state)); - - switch (s->state) { - - case SERVICE_START_PRE: - if (f == SERVICE_SUCCESS) - service_enter_start(s); - else - service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); - break; - - case SERVICE_START: - assert(s->type == SERVICE_FORKING); - - if (f != SERVICE_SUCCESS) { - service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); - break; - } - - if (s->pid_file) { - bool has_start_post; - int r; - - /* Let's try to load the pid file here if we can. - * The PID file might actually be created by a START_POST - * script. In that case don't worry if the loading fails. */ - - has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST]; - r = service_load_pid_file(s, !has_start_post); - if (!has_start_post && r < 0) { - r = service_demand_pid_file(s); - if (r < 0 || !cgroup_good(s)) - service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); - break; - } - } else - service_search_main_pid(s); - - service_enter_start_post(s); - break; - - case SERVICE_START_POST: - if (f != SERVICE_SUCCESS) { - service_enter_stop(s, f); - break; - } - - if (s->pid_file) { - int r; - - r = service_load_pid_file(s, true); - if (r < 0) { - r = service_demand_pid_file(s); - if (r < 0 || !cgroup_good(s)) - service_enter_stop(s, SERVICE_FAILURE_RESOURCES); - break; - } - } else - service_search_main_pid(s); - - service_enter_running(s, SERVICE_SUCCESS); - break; - - case SERVICE_RELOAD: - if (f == SERVICE_SUCCESS) { - service_load_pid_file(s, true); - service_search_main_pid(s); - } - - s->reload_result = f; - service_enter_running(s, SERVICE_SUCCESS); - break; - - case SERVICE_STOP: - service_enter_signal(s, SERVICE_STOP_SIGTERM, f); - break; - - case SERVICE_STOP_SIGTERM: - case SERVICE_STOP_SIGKILL: - if (main_pid_good(s) <= 0) - service_enter_stop_post(s, f); - - /* If there is still a service - * process around, wait until - * that one quit, too */ - break; - - case SERVICE_STOP_POST: - case SERVICE_FINAL_SIGTERM: - case SERVICE_FINAL_SIGKILL: - service_enter_dead(s, f, true); - break; - - default: - assert_not_reached("Uh, control process died at wrong time."); - } - } - } - - /* Notify clients about changed exit status */ - unit_add_to_dbus_queue(u); -} - -static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) { - Service *s = SERVICE(u); - - assert(s); - assert(elapsed == 1); - - if (w == &s->watchdog_watch) { - service_handle_watchdog(s); - return; - } - - assert(w == &s->timer_watch); - - switch (s->state) { - - case SERVICE_START_PRE: - case SERVICE_START: - log_warning("%s operation timed out. Terminating.", u->id); - service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); - break; - - case SERVICE_START_POST: - log_warning("%s operation timed out. Stopping.", u->id); - service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); - break; - - case SERVICE_RELOAD: - log_warning("%s operation timed out. Stopping.", u->id); - s->reload_result = SERVICE_FAILURE_TIMEOUT; - service_enter_running(s, SERVICE_SUCCESS); - break; - - case SERVICE_STOP: - log_warning("%s stopping timed out. Terminating.", u->id); - service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); - break; - - case SERVICE_STOP_SIGTERM: - if (s->exec_context.send_sigkill) { - log_warning("%s stopping timed out. Killing.", u->id); - service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); - } else { - log_warning("%s stopping timed out. Skipping SIGKILL.", u->id); - service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); - } - - break; - - case SERVICE_STOP_SIGKILL: - /* Uh, we sent a SIGKILL and it is still not gone? - * Must be something we cannot kill, so let's just be - * weirded out and continue */ - - log_warning("%s still around after SIGKILL. Ignoring.", u->id); - service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); - break; - - case SERVICE_STOP_POST: - log_warning("%s stopping timed out (2). Terminating.", u->id); - service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); - break; - - case SERVICE_FINAL_SIGTERM: - if (s->exec_context.send_sigkill) { - log_warning("%s stopping timed out (2). Killing.", u->id); - service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); - } else { - log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->id); - service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); - } - - break; - - case SERVICE_FINAL_SIGKILL: - log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->id); - service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); - break; - - case SERVICE_AUTO_RESTART: - log_info("%s holdoff time over, scheduling restart.", u->id); - service_enter_restart(s); - break; - - default: - assert_not_reached("Timeout at wrong time."); - } -} - -static void service_cgroup_notify_event(Unit *u) { - Service *s = SERVICE(u); - - assert(u); - - log_debug("%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("%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_FINAL_SIGTERM: - case SERVICE_FINAL_SIGKILL: - if (main_pid_good(s) <= 0 && !control_pid_good(s)) - service_enter_dead(s, SERVICE_SUCCESS, SERVICE_SUCCESS); - - break; - - default: - ; - } -} - -static void service_notify_message(Unit *u, pid_t pid, char **tags) { - Service *s = SERVICE(u); - const char *e; - - assert(u); - - if (s->notify_access == NOTIFY_NONE) { - log_warning("%s: Got notification message from PID %lu, but reception is disabled.", - u->id, (unsigned long) pid); - return; - } - - if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { - log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu", - u->id, (unsigned long) pid, (unsigned long) s->main_pid); - return; - } - - log_debug("%s: Got message", u->id); - - /* 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("Failed to parse notification message %s", e); - else { - log_debug("%s: got %s", u->id, e); - service_set_main_pid(s, pid); - } - } - - /* Interpret READY= */ - if (s->type == SERVICE_NOTIFY && - s->state == SERVICE_START && - strv_find(tags, "READY=1")) { - log_debug("%s: got READY=1", u->id); - - service_enter_start_post(s); - } - - /* Interpret STATUS= */ - e = strv_find_prefix(tags, "STATUS="); - if (e) { - char *t; - - if (e[7]) { - - if (!utf8_is_valid(e+7)) { - log_warning("Status message in notification is not UTF-8 clean."); - return; - } - - t = strdup(e+7); - if (!t) { - log_error("Failed to allocate string."); - return; - } - - log_debug("%s: got %s", u->id, e); - - free(s->status_text); - s->status_text = t; - } else { - free(s->status_text); - s->status_text = NULL; - } - - } - if (strv_find(tags, "WATCHDOG=1")) { - log_debug("%s: got WATCHDOG=1", u->id); - service_reset_watchdog(s); - } - - /* Notify clients about changed status or main pid */ - unit_add_to_dbus_queue(u); -} - -#ifdef HAVE_SYSV_COMPAT - -#ifdef TARGET_SUSE -static void sysv_facility_in_insserv_conf(Manager *mgr) { - FILE *f=NULL; - int r; - - if (!(f = fopen("/etc/insserv.conf", "re"))) { - r = errno == ENOENT ? 0 : -errno; - goto finish; - } - - while (!feof(f)) { - char l[LINE_MAX], *t; - char **parsed = NULL; - - if (!fgets(l, sizeof(l), f)) { - if (feof(f)) - break; - - r = -errno; - log_error("Failed to read configuration file '/etc/insserv.conf': %s", strerror(-r)); - goto finish; - } - - t = strstrip(l); - if (*t != '$' && *t != '<') - continue; - - parsed = strv_split(t,WHITESPACE); - /* we ignore <interactive>, not used, equivalent to X-Interactive */ - if (parsed && !startswith_no_case (parsed[0], "<interactive>")) { - char *facility; - Unit *u; - if (sysv_translate_facility(parsed[0], NULL, &facility) < 0) - continue; - if ((u = manager_get_unit(mgr, facility)) && (u->type == UNIT_TARGET)) { - UnitDependency e; - char *dep = NULL, *name, **j; - - STRV_FOREACH (j, parsed+1) { - if (*j[0]=='+') { - e = UNIT_WANTS; - name = *j+1; - } - else { - e = UNIT_REQUIRES; - name = *j; - } - if (sysv_translate_facility(name, NULL, &dep) < 0) - continue; - - r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, e, dep, NULL, true); - free(dep); - } - } - free(facility); - } - strv_free(parsed); - } -finish: - if (f) - fclose(f); - -} -#endif - -static int service_enumerate(Manager *m) { - char **p; - unsigned i; - DIR *d = NULL; - char *path = NULL, *fpath = NULL, *name = NULL; - Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL; - Unit *service; - Iterator j; - int r; - - assert(m); - - if (m->running_as != MANAGER_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; - - free(path); - path = join(*p, "/", rcnd_table[i].path, NULL); - if (!path) { - r = -ENOMEM; - goto finish; - } - - if (d) - closedir(d); - - if (!(d = opendir(path))) { - if (errno != ENOENT) - log_warning("opendir() failed on %s: %s", path, strerror(errno)); - - 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 = join(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: %s", fpath, strerror(errno)); - - continue; - } - - free(name); - if (!(name = sysv_translate_name(de->d_name + 3))) { - r = -ENOMEM; - goto finish; - } - - if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 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 || rcnd_table[i].type == RUNLEVEL_SYSINIT) { - SERVICE(service)->sysv_start_priority_from_rcnd = - MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd); - - SERVICE(service)->sysv_enabled = true; - } - - if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0) - goto finish; - - if ((r = set_put(runlevel_services[i], service)) < 0) - goto finish; - - } else if (de->d_name[0] == 'K' && - (rcnd_table[i].type == RUNLEVEL_DOWN || - rcnd_table[i].type == RUNLEVEL_SYSINIT)) { - - if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0) - goto finish; - - if ((r = set_put(shutdown_services, service)) < 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; - - if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 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. On SUSE the boot.d/ runlevel is - * also used for shutdown, so we add links for that too to the - * shutdown target.*/ - SET_FOREACH(service, shutdown_services, j) { - service = unit_follow_merge(service); - - if (service->fragment_path) - continue; - - if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0) - goto finish; - } - - r = 0; - -#ifdef TARGET_SUSE - sysv_facility_in_insserv_conf (m); -#endif - -finish: - free(path); - free(fpath); - free(name); - - for (i = 0; i < ELEMENTSOF(rcnd_table); i++) - set_free(runlevel_services[i]); - set_free(shutdown_services); - - if (d) - closedir(d); - - return r; -} -#endif - -static void service_bus_name_owner_change( - Unit *u, - const char *name, - const char *old_owner, - const char *new_owner) { - - Service *s = SERVICE(u); - - assert(s); - assert(name); - - assert(streq(s->bus_name, name)); - assert(old_owner || new_owner); - - if (old_owner && new_owner) - log_debug("%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("%s's D-Bus name %s no longer registered by %s", u->id, name, old_owner); - else - log_debug("%s's D-Bus name %s now registered by %s", u->id, name, new_owner); - - s->bus_name_good = !!new_owner; - - if (s->type == SERVICE_DBUS) { - - /* service_enter_running() will figure out what to - * do */ - if (s->state == SERVICE_RUNNING) - service_enter_running(s, SERVICE_SUCCESS); - else if (s->state == SERVICE_START && new_owner) - service_enter_start_post(s); - - } else if (new_owner && - s->main_pid <= 0 && - (s->state == SERVICE_START || - s->state == SERVICE_START_POST || - s->state == SERVICE_RUNNING || - s->state == SERVICE_RELOAD)) { - - /* Try to acquire PID from bus service */ - log_debug("Trying to acquire PID from D-Bus name..."); - - bus_query_pid(u->manager, name); - } -} - -static void service_bus_query_pid_done( - Unit *u, - const char *name, - pid_t pid) { - - Service *s = SERVICE(u); - - assert(s); - assert(name); - - log_debug("%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid); - - if (s->main_pid <= 0 && - (s->state == SERVICE_START || - s->state == SERVICE_START_POST || - s->state == SERVICE_RUNNING || - s->state == SERVICE_RELOAD)) - service_set_main_pid(s, pid); -} - -int service_set_socket_fd(Service *s, int fd, Socket *sock) { - - assert(s); - assert(fd >= 0); - - /* This is called by the socket code when instantiating a new - * service for a stream socket and the socket needs to be - * configured. */ - - if (UNIT(s)->load_state != UNIT_LOADED) - return -EINVAL; - - if (s->socket_fd >= 0) - return -EBUSY; - - if (s->state != SERVICE_DEAD) - return -EAGAIN; - - s->socket_fd = fd; - s->got_socket_fd = true; - - unit_ref_set(&s->accept_socket, UNIT(sock)); - - return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false); -} - -static void service_reset_failed(Unit *u) { - Service *s = SERVICE(u); - - assert(s); - - if (s->state == SERVICE_FAILED) - service_set_state(s, SERVICE_DEAD); - - s->result = SERVICE_SUCCESS; - s->reload_result = SERVICE_SUCCESS; -} - -static bool service_need_daemon_reload(Unit *u) { - Service *s = SERVICE(u); - - assert(s); - -#ifdef HAVE_SYSV_COMPAT - if (s->sysv_path) { - struct stat st; - - zero(st); - if (stat(s->sysv_path, &st) < 0) - /* What, cannot access this anymore? */ - return true; - - if (s->sysv_mtime > 0 && - timespec_load(&st.st_mtim) != s->sysv_mtime) - return true; - } -#endif - - return false; -} - -static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) { - Service *s = SERVICE(u); - int r = 0; - Set *pid_set = NULL; - - assert(s); - - if (s->main_pid <= 0 && who == KILL_MAIN) { - dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill"); - return -ESRCH; - } - - if (s->control_pid <= 0 && who == KILL_CONTROL) { - dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); - return -ESRCH; - } - - if (who == KILL_CONTROL || who == KILL_ALL) - if (s->control_pid > 0) - if (kill(s->control_pid, signo) < 0) - r = -errno; - - if (who == KILL_MAIN || who == KILL_ALL) - if (s->main_pid > 0) - if (kill(s->main_pid, signo) < 0) - r = -errno; - - if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) { - int q; - - if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) - return -ENOMEM; - - /* Exclude the control/main pid from being killed via the cgroup */ - if (s->control_pid > 0) - if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) { - r = q; - goto finish; - } - - if (s->main_pid > 0) - if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) { - r = q; - goto finish; - } - - if ((q = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, signo, false, pid_set)) < 0) - if (q != -EAGAIN && q != -ESRCH && q != -ENOENT) - r = q; - } - -finish: - if (pid_set) - set_free(pid_set); - - return r; -} - -static const char* const service_state_table[_SERVICE_STATE_MAX] = { - [SERVICE_DEAD] = "dead", - [SERVICE_START_PRE] = "start-pre", - [SERVICE_START] = "start", - [SERVICE_START_POST] = "start-post", - [SERVICE_RUNNING] = "running", - [SERVICE_EXITED] = "exited", - [SERVICE_RELOAD] = "reload", - [SERVICE_STOP] = "stop", - [SERVICE_STOP_SIGTERM] = "stop-sigterm", - [SERVICE_STOP_SIGKILL] = "stop-sigkill", - [SERVICE_STOP_POST] = "stop-post", - [SERVICE_FINAL_SIGTERM] = "final-sigterm", - [SERVICE_FINAL_SIGKILL] = "final-sigkill", - [SERVICE_FAILED] = "failed", - [SERVICE_AUTO_RESTART] = "auto-restart", -}; - -DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState); - -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_ABORT] = "on-abort", - [SERVICE_RESTART_ALWAYS] = "always" -}; - -DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); - -static const char* const service_type_table[_SERVICE_TYPE_MAX] = { - [SERVICE_SIMPLE] = "simple", - [SERVICE_FORKING] = "forking", - [SERVICE_ONESHOT] = "oneshot", - [SERVICE_DBUS] = "dbus", - [SERVICE_NOTIFY] = "notify" -}; - -DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); - -static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { - [SERVICE_EXEC_START_PRE] = "ExecStartPre", - [SERVICE_EXEC_START] = "ExecStart", - [SERVICE_EXEC_START_POST] = "ExecStartPost", - [SERVICE_EXEC_RELOAD] = "ExecReload", - [SERVICE_EXEC_STOP] = "ExecStop", - [SERVICE_EXEC_STOP_POST] = "ExecStopPost", -}; - -DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); - -static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = { - [NOTIFY_NONE] = "none", - [NOTIFY_MAIN] = "main", - [NOTIFY_ALL] = "all" -}; - -DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess); - -static const char* const service_result_table[_SERVICE_RESULT_MAX] = { - [SERVICE_SUCCESS] = "success", - [SERVICE_FAILURE_RESOURCES] = "resources", - [SERVICE_FAILURE_TIMEOUT] = "timeout", - [SERVICE_FAILURE_EXIT_CODE] = "exit-code", - [SERVICE_FAILURE_SIGNAL] = "signal", - [SERVICE_FAILURE_CORE_DUMP] = "core-dump", - [SERVICE_FAILURE_WATCHDOG] = "watchdog" -}; - -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 = { - .suffix = ".service", - .object_size = sizeof(Service), - .sections = - "Unit\0" - "Service\0" - "Install\0", - .show_status = true, - - .init = service_init, - .done = service_done, - .load = service_load, - - .coldplug = service_coldplug, - - .dump = service_dump, - - .start = service_start, - .stop = service_stop, - .reload = service_reload, - - .can_reload = service_can_reload, - - .kill = service_kill, - - .serialize = service_serialize, - .deserialize_item = service_deserialize_item, - - .active_state = service_active_state, - .sub_state_to_string = service_sub_state_to_string, - - .check_gc = service_check_gc, - .check_snapshot = service_check_snapshot, - - .sigchld_event = service_sigchld_event, - .timer_event = service_timer_event, - .fd_event = service_fd_event, - - .reset_failed = service_reset_failed, - - .need_daemon_reload = service_need_daemon_reload, - - .cgroup_notify_empty = service_cgroup_notify_event, - .notify_message = service_notify_message, - - .bus_name_owner_change = service_bus_name_owner_change, - .bus_query_pid_done = service_bus_query_pid_done, - - .bus_interface = "org.freedesktop.systemd1.Service", - .bus_message_handler = bus_service_message_handler, - .bus_invalidating_properties = bus_service_invalidating_properties, - -#ifdef HAVE_SYSV_COMPAT - .enumerate = service_enumerate -#endif -}; 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