+++ /dev/null
-/*-*- 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
-};
~ianmdlvl / elogind.git / blobdiff