+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8 -*-*/
-
-/***
- 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 "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"
-
-#define COMMENTS "#;\n"
-#define NEWLINES "\n\r"
-#define LINE_MAX 4096
-
-typedef enum RunlevelType {
- RUNLEVEL_UP,
- RUNLEVEL_DOWN,
- RUNLEVEL_BASIC
-} RunlevelType;
-
-static const struct {
- const char *path;
- const char *target;
- const RunlevelType type;
-} rcnd_table[] = {
- /* Standard SysV runlevels */
- { "rc0.d", SPECIAL_RUNLEVEL0_TARGET, RUNLEVEL_DOWN },
- { "rc1.d", SPECIAL_RUNLEVEL1_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 },
- { "rc6.d", SPECIAL_RUNLEVEL6_TARGET, RUNLEVEL_DOWN },
-
- /* SuSE style boot.d */
- { "boot.d", SPECIAL_BASIC_TARGET, RUNLEVEL_BASIC },
-
- /* Debian style rcS.d */
- { "rcS.d", SPECIAL_BASIC_TARGET, RUNLEVEL_BASIC },
-};
-
-#define RUNLEVELS_UP "12345"
-/* #define RUNLEVELS_DOWN "06" */
-/* #define RUNLEVELS_BOOT "bBsS" */
-
-static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
- [SERVICE_DEAD] = UNIT_INACTIVE,
- [SERVICE_START_PRE] = UNIT_ACTIVATING,
- [SERVICE_START] = UNIT_ACTIVATING,
- [SERVICE_START_POST] = UNIT_ACTIVATING,
- [SERVICE_RUNNING] = UNIT_ACTIVE,
- [SERVICE_EXITED] = UNIT_ACTIVE,
- [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING,
- [SERVICE_STOP] = UNIT_DEACTIVATING,
- [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
- [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
- [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
- [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
- [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
- [SERVICE_MAINTAINANCE] = UNIT_INACTIVE,
- [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING,
-};
-
-static void service_init(Unit *u) {
- Service *s = SERVICE(u);
-
- assert(u);
- assert(u->meta.load_state == UNIT_STUB);
-
- s->timeout_usec = DEFAULT_TIMEOUT_USEC;
- s->restart_usec = DEFAULT_RESTART_USEC;
- s->timer_watch.type = WATCH_INVALID;
- s->sysv_start_priority = -1;
- s->socket_fd = -1;
-
- exec_context_init(&s->exec_context);
-
- RATELIMIT_INIT(s->ratelimit, 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_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_done(Unit *u) {
- Service *s = SERVICE(u);
-
- assert(s);
-
- free(s->pid_file);
- s->pid_file = NULL;
-
- free(s->sysv_path);
- s->sysv_path = NULL;
-
- free(s->sysv_runlevels);
- s->sysv_runlevels = NULL;
-
- exec_context_done(&s->exec_context);
- exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
- s->control_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);
-
- if (s->bus_name) {
- unit_unwatch_bus_name(UNIT(u), s->bus_name);
- free(s->bus_name);
- s->bus_name = NULL;
- }
-
- service_close_socket_fd(s);
-
- unit_unwatch_timer(u, &s->timer_watch);
-}
-
-static int sysv_translate_name(const char *name, char **_r) {
-
- static const char * const table[] = {
- "$local_fs", SPECIAL_LOCAL_FS_TARGET,
- "$network", SPECIAL_NETWORK_TARGET,
- "$named", SPECIAL_NSS_LOOKUP_TARGET,
- "$portmap", SPECIAL_RPCBIND_TARGET,
- "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
- "$syslog", SPECIAL_SYSLOG_TARGET,
- "$time", SPECIAL_RTC_SET_TARGET
- };
-
- unsigned i;
- char *r;
-
- for (i = 0; i < ELEMENTSOF(table); i += 2)
- if (streq(table[i], name)) {
- if (!(r = strdup(table[i+1])))
- return -ENOMEM;
-
- goto finish;
- }
-
- if (*name == '$')
- return 0;
-
- if (asprintf(&r, "%s.service", name) < 0)
- return -ENOMEM;
-
-finish:
-
- if (_r)
- *_r = r;
-
- return 1;
-}
-
-static int sysv_chkconfig_order(Service *s) {
- Meta *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_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
- Service *t;
- UnitDependency d;
-
- t = (Service*) other;
-
- if (s == t)
- continue;
-
- if (t->sysv_start_priority < 0)
- continue;
-
- /* If both units have modern headers we don't care
- * about the priorities */
- if ((!s->sysv_path || s->sysv_has_lsb) &&
- (!t->sysv_path || t->sysv_has_lsb))
- continue;
-
- if (t->sysv_start_priority < s->sysv_start_priority)
- 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;
-
- assert(s);
- assert(path);
-
- u = UNIT(s);
-
- if (!(f = fopen(path, "re"))) {
- r = errno == ENOENT ? 0 : -errno;
- goto finish;
- }
-
- s->type = SERVICE_FORKING;
- s->restart = SERVICE_ONCE;
-
- free(s->sysv_path);
- if (!(s->sysv_path = strdup(path))) {
- r = -ENOMEM;
- 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(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 if (s->sysv_start_priority < 0)
- 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(t, "description:")) {
-
- size_t k = strlen(t);
- char *d;
-
- if (t[k-1] == '\\') {
- state = DESCRIPTION;
- t[k-1] = 0;
- }
-
- if (!(d = strdup(strstrip(t+12)))) {
- r = -ENOMEM;
- goto finish;
- }
-
- free(u->meta.description);
- u->meta.description = d;
-
- } else if (startswith(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 *d;
-
- if (t[k-1] == '\\')
- t[k-1] = 0;
- else
- state = NORMAL;
-
- assert(u->meta.description);
- if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
- r = -ENOMEM;
- goto finish;
- }
-
- free(u->meta.description);
- u->meta.description = d;
-
- } else if (state == LSB || state == LSB_DESCRIPTION) {
-
- if (startswith(t, "Provides:")) {
- char *i, *w;
- size_t z;
-
- state = LSB;
-
- FOREACH_WORD(w, z, t+9, i) {
- char *n, *m;
-
- if (!(n = strndup(w, z))) {
- r = -ENOMEM;
- goto finish;
- }
-
- r = sysv_translate_name(n, &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 {
- if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m, NULL, true)) >= 0)
- r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
- }
-
- free(m);
-
- if (r < 0)
- goto finish;
- }
-
- } else if (startswith(t, "Required-Start:") ||
- startswith(t, "Should-Start:")) {
- char *i, *w;
- size_t z;
-
- state = LSB;
-
- FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
- char *n, *m;
-
- if (!(n = strndup(w, z))) {
- r = -ENOMEM;
- goto finish;
- }
-
- r = sysv_translate_name(n, &m);
- free(n);
-
- if (r < 0)
- goto finish;
-
- if (r == 0)
- continue;
-
- r = unit_add_dependency_by_name(u, UNIT_AFTER, m, NULL, true);
- free(m);
-
- if (r < 0)
- goto finish;
- }
- } else if (startswith(t, "Default-Start:")) {
- char *k, *d;
-
- state = LSB;
-
- k = delete_chars(t+14, WHITESPACE "-");
-
- if (k[0] != 0) {
- if (!(d = strdup(k))) {
- r = -ENOMEM;
- goto finish;
- }
-
- free(s->sysv_runlevels);
- s->sysv_runlevels = d;
- }
-
- } else if (startswith(t, "Description:")) {
- char *d;
-
- state = LSB_DESCRIPTION;
-
- if (!(d = strdup(strstrip(t+12)))) {
- r = -ENOMEM;
- goto finish;
- }
-
- free(u->meta.description);
- u->meta.description = d;
-
- } else if (startswith(t, "Short-Description:") &&
- !u->meta.description) {
- char *d;
-
- /* We use the short description only
- * if no long description is set. */
-
- state = LSB;
-
- if (!(d = strdup(strstrip(t+18)))) {
- r = -ENOMEM;
- goto finish;
- }
-
- u->meta.description = d;
-
- } else if (state == LSB_DESCRIPTION) {
-
- if (startswith(l, "#\t") || startswith(l, "# ")) {
- char *d;
-
- assert(u->meta.description);
- if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
- r = -ENOMEM;
- goto finish;
- }
-
- free(u->meta.description);
- u->meta.description = d;
- } else
- state = LSB;
- }
- }
- }
-
- if ((r = sysv_exec_commands(s)) < 0)
- goto finish;
-
- if (!s->sysv_runlevels || chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
- /* If there a runlevels configured for this service
- * but none of the standard ones, then we assume this
- * is some special kind of service (which might be
- * needed for early boot) and don't create any links
- * to it. */
-
- if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0 ||
- (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
- goto finish;
-
- } else
- /* Don't timeout special services during boot (like fsck) */
- s->timeout_usec = 0;
-
- /* Special setting for all SysV services */
- s->valid_no_process = true;
- s->kill_mode = KILL_PROCESS_GROUP;
-
- u->meta.load_state = UNIT_LOADED;
- r = 0;
-
-finish:
-
- if (f)
- fclose(f);
-
- return r;
-}
-
-static int service_load_sysv_name(Service *s, const char *name) {
- char **p;
-
- assert(s);
- assert(name);
-
- STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
- char *path;
- int r;
-
- if (asprintf(&path, "%s/%s", *p, name) < 0)
- return -ENOMEM;
-
- assert(endswith(path, ".service"));
- path[strlen(path)-8] = 0;
-
- r = service_load_sysv_path(s, path);
-
- if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
- /* Try Debian style .sh source'able init scripts */
- strcat(path, ".sh");
- r = service_load_sysv_path(s, path);
- }
-
- free(path);
-
- if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
- /* Try Suse style boot.xxxx init scripts */
-
- if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
- return -ENOMEM;
-
- path[strlen(path)-8] = 0;
- r = service_load_sysv_path(s, path);
- free(path);
- }
-
- if (r < 0)
- return r;
-
- if ((UNIT(s)->meta.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)->meta.manager->sysvinit_path))
- return 0;
-
- if ((t = UNIT(s)->meta.id))
- if ((r = service_load_sysv_name(s, t)) < 0)
- return r;
-
- if (UNIT(s)->meta.load_state == UNIT_STUB)
- SET_FOREACH(t, UNIT(s)->meta.names, i) {
- if (t == UNIT(s)->meta.id)
- continue;
-
- if ((r == service_load_sysv_name(s, t)) < 0)
- return r;
-
- if (UNIT(s)->meta.load_state != UNIT_STUB)
- break;
- }
-
- return 0;
-}
-
-static int service_add_bus_name(Service *s) {
- char *n;
- int r;
-
- assert(s);
- assert(s->bus_name);
-
- if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
- return 0;
-
- r = unit_merge_by_name(UNIT(s), n);
- free(n);
-
- return r;
-}
-
-static int service_verify(Service *s) {
- assert(s);
-
- if (UNIT(s)->meta.load_state != UNIT_LOADED)
- return 0;
-
- if (!s->exec_command[SERVICE_EXEC_START]) {
- log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.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)->meta.id);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int service_load(Unit *u) {
- int r;
- Service *s = SERVICE(u);
-
- assert(s);
-
- /* Load a .service file */
- if ((r = unit_load_fragment(u)) < 0)
- return r;
-
- /* Load a classic init script as a fallback, if we couldn't find anything */
- if (u->meta.load_state == UNIT_STUB)
- if ((r = service_load_sysv(s)) < 0)
- return r;
-
- /* Still nothing found? Then let's give up */
- if (u->meta.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->meta.load_state == UNIT_LOADED) {
- if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
- return r;
-
- if ((r = unit_add_default_cgroup(u)) < 0)
- return r;
-
- if ((r = sysv_chkconfig_order(s)) < 0)
- return r;
-
- if (s->bus_name) {
- if ((r = service_add_bus_name(s)) < 0)
- return r;
-
- if ((r = unit_watch_bus_name(u, s->bus_name)) < 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"
- "%sPermissionsStartOnly: %s\n"
- "%sRootDirectoryStartOnly: %s\n"
- "%sValidNoProcess: %s\n"
- "%sKillMode: %s\n"
- "%sType: %s\n",
- prefix, service_state_to_string(s->state),
- prefix, yes_no(s->permissions_start_only),
- prefix, yes_no(s->root_directory_start_only),
- prefix, yes_no(s->valid_no_process),
- prefix, kill_mode_to_string(s->kill_mode),
- prefix, service_type_to_string(s->type));
-
- if (s->control_pid > 0)
- fprintf(f,
- "%sControl PID: %llu\n",
- prefix, (unsigned long long) s->control_pid);
-
- if (s->main_pid > 0)
- fprintf(f,
- "%sMain PID: %llu\n",
- prefix, (unsigned long long) s->main_pid);
-
- if (s->pid_file)
- fprintf(f,
- "%sPIDFile: %s\n",
- 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);
- }
-
- if (s->sysv_path)
- fprintf(f,
- "%sSysV Init Script Path: %s\n"
- "%sSysV Init Script has LSB Header: %s\n",
- prefix, s->sysv_path,
- prefix, yes_no(s->sysv_has_lsb));
-
- 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);
-
- free(p2);
-}
-
-static int service_load_pid_file(Service *s) {
- char *k;
- unsigned long p;
- int r;
-
- assert(s);
-
- if (s->main_pid_known)
- return 0;
-
- assert(s->main_pid <= 0);
-
- if (!s->pid_file)
- return -ENOENT;
-
- if ((r = read_one_line_file(s->pid_file, &k)) < 0)
- return r;
-
- if ((r = safe_atolu(k, &p)) < 0) {
- free(k);
- return r;
- }
-
- if ((unsigned long) (pid_t) p != p)
- return -ERANGE;
-
- if (kill((pid_t) p, 0) < 0 && errno != EPERM) {
- log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
- (unsigned long long) p, s->pid_file);
- return -ESRCH;
- }
-
- if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0)
- /* FIXME: we need to do something here */
- return r;
-
- s->main_pid = (pid_t) p;
- s->main_pid_known = true;
-
- return 0;
-}
-
-static int service_get_sockets(Service *s, Set **_set) {
- Set *set;
- Iterator i;
- char *t;
- int r;
-
- assert(s);
- assert(_set);
-
- /* Collects all Socket objects that belong to this
- * service. Note that a service might have multiple sockets
- * via multiple names. */
-
- if (!(set = set_new(NULL, NULL)))
- return -ENOMEM;
-
- SET_FOREACH(t, UNIT(s)->meta.names, i) {
- char *k;
- Unit *p;
-
- /* Look for all socket objects that go by any of our
- * units and collect their fds */
-
- if (!(k = unit_name_change_suffix(t, ".socket"))) {
- r = -ENOMEM;
- goto fail;
- }
-
- p = manager_get_unit(UNIT(s)->meta.manager, k);
- free(k);
-
- if (!p)
- continue;
-
- if ((r = set_put(set, p)) < 0)
- goto fail;
- }
-
- *_set = set;
- return 0;
-
-fail:
- set_free(set);
- return r;
-}
-
-static int service_notify_sockets_dead(Service *s) {
- Iterator i;
- Set *set;
- Socket *sock;
- int r;
-
- assert(s);
-
- /* Notifies all our sockets when we die */
- if ((r = service_get_sockets(s, &set)) < 0)
- return r;
-
- SET_FOREACH(sock, set, i)
- socket_notify_service_dead(sock);
-
- set_free(set);
-
- return 0;
-}
-
-static void service_set_state(Service *s, ServiceState state) {
- ServiceState old_state;
- assert(s);
-
- old_state = s->state;
- s->state = state;
-
- 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);
-
- 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_MAINTAINANCE ||
- state == SERVICE_AUTO_RESTART)
- service_notify_sockets_dead(s);
-
- if (state != SERVICE_START_PRE &&
- state != SERVICE_START &&
- !(state == SERVICE_DEAD && UNIT(s)->meta.job))
- service_close_socket_fd(s);
-
- if (old_state != state)
- log_debug("%s changed %s -> %s", UNIT(s)->meta.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]);
-}
-
-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->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;
-
- 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;
- Set *set;
- Socket *sock;
-
- assert(s);
- assert(fds);
- assert(n_fds);
-
- if ((r = service_get_sockets(s, &set)) < 0)
- return r;
-
- SET_FOREACH(sock, set, i) {
- int *cfds;
- unsigned cn_fds;
-
- 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);
- memcpy(t+rn_fds, cfds, cn_fds);
- free(rfds);
- free(cfds);
-
- rfds = t;
- rn_fds = rn_fds+cn_fds;
- }
- }
-
- *fds = rfds;
- *n_fds = rn_fds;
-
- set_free(set);
-
- return 0;
-
-fail:
- set_free(set);
- free(rfds);
-
- return r;
-}
-
-static int service_spawn(
- Service *s,
- ExecCommand *c,
- bool timeout,
- bool pass_fds,
- bool apply_permissions,
- bool apply_chroot,
- pid_t *_pid) {
-
- pid_t pid;
- int r;
- int *fds = NULL;
- unsigned n_fds = 0;
- char **argv;
-
- assert(s);
- assert(c);
- assert(_pid);
-
- if (pass_fds) {
- if (s->socket_fd >= 0) {
- fds = &s->socket_fd;
- n_fds = 1;
- } else if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
- goto fail;
- }
-
- 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;
- }
-
- r = exec_spawn(c,
- argv,
- &s->exec_context,
- fds, n_fds,
- s->meta.manager->environment,
- apply_permissions,
- apply_chroot,
- UNIT(s)->meta.manager->confirm_spawn,
- UNIT(s)->meta.cgroup_bondings,
- &pid);
-
- strv_free(argv);
- if (r < 0)
- goto fail;
-
- if (fds) {
- if (s->socket_fd >= 0)
- service_close_socket_fd(s);
- else
- free(fds);
- }
-
- if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
- /* FIXME: we need to do something here */
- goto fail;
-
- *_pid = pid;
-
- return 0;
-
-fail:
- free(fds);
-
- 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)
- return s->main_pid > 0;
-
- /* We don't know the pid */
- return -EAGAIN;
-}
-
-static int control_pid_good(Service *s) {
- assert(s);
-
- return s->control_pid > 0;
-}
-
-static int cgroup_good(Service *s) {
- int r;
-
- assert(s);
-
- if (s->valid_no_process)
- return -EAGAIN;
-
- if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0)
- return r;
-
- return !r;
-}
-
-static void service_enter_dead(Service *s, bool success, bool allow_restart) {
- int r;
- assert(s);
-
- if (!success)
- s->failure = true;
-
- if (allow_restart &&
- s->allow_restart &&
- (s->restart == SERVICE_RESTART_ALWAYS ||
- (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
-
- if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
- goto fail;
-
- service_set_state(s, SERVICE_AUTO_RESTART);
- } else
- service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
-
- return;
-
-fail:
- log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r));
- service_enter_dead(s, false, false);
-}
-
-static void service_enter_signal(Service *s, ServiceState state, bool success);
-
-static void service_enter_stop_post(Service *s, bool success) {
- int r;
- assert(s);
-
- if (!success)
- s->failure = true;
-
- service_unwatch_control_pid(s);
-
- s->control_command_id = SERVICE_EXEC_STOP_POST;
- if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
- if ((r = service_spawn(s,
- s->control_command,
- true,
- false,
- !s->permissions_start_only,
- !s->root_directory_start_only,
- &s->control_pid)) < 0)
- goto fail;
-
-
- service_set_state(s, SERVICE_STOP_POST);
- } else
- service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
-
- return;
-
-fail:
- log_warning("%s failed to run stop-post executable: %s", UNIT(s)->meta.id, strerror(-r));
- service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
-}
-
-static void service_enter_signal(Service *s, ServiceState state, bool success) {
- int r;
- bool sent = false;
-
- assert(s);
-
- if (!success)
- s->failure = true;
-
- if (s->kill_mode != KILL_NONE) {
- int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
-
- if (s->kill_mode == KILL_CONTROL_GROUP) {
-
- if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
- if (r != -EAGAIN && r != -ESRCH)
- goto fail;
- } else
- sent = true;
- }
-
- if (!sent) {
- r = 0;
-
- if (s->main_pid > 0) {
- if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
- r = -errno;
- else
- sent = true;
- }
-
- if (s->control_pid > 0) {
- if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
- r = -errno;
- else
- sent = true;
- }
-
- if (r < 0)
- goto fail;
- }
- }
-
- if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
- 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, true);
- else
- service_enter_dead(s, true, true);
-
- return;
-
-fail:
- log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r));
-
- if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
- service_enter_stop_post(s, false);
- else
- service_enter_dead(s, false, true);
-}
-
-static void service_enter_stop(Service *s, bool success) {
- int r;
- assert(s);
-
- if (!success)
- s->failure = true;
-
- service_unwatch_control_pid(s);
-
- s->control_command_id = SERVICE_EXEC_STOP;
- if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
- if ((r = service_spawn(s,
- s->control_command,
- true,
- false,
- !s->permissions_start_only,
- !s->root_directory_start_only,
- &s->control_pid)) < 0)
- goto fail;
-
- service_set_state(s, SERVICE_STOP);
- } else
- service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
-
- return;
-
-fail:
- log_warning("%s failed to run stop executable: %s", UNIT(s)->meta.id, strerror(-r));
- service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
-}
-
-static void service_enter_running(Service *s, bool success) {
- assert(s);
-
- if (!success)
- s->failure = true;
-
- if (main_pid_good(s) != 0 &&
- cgroup_good(s) != 0 &&
- (s->bus_name_good || s->type != SERVICE_DBUS))
- service_set_state(s, SERVICE_RUNNING);
- else if (s->valid_no_process)
- service_set_state(s, SERVICE_EXITED);
- else
- service_enter_stop(s, true);
-}
-
-static void service_enter_start_post(Service *s) {
- int r;
- assert(s);
-
- service_unwatch_control_pid(s);
-
- s->control_command_id = SERVICE_EXEC_START_POST;
- if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
- if ((r = service_spawn(s,
- s->control_command,
- true,
- false,
- !s->permissions_start_only,
- !s->root_directory_start_only,
- &s->control_pid)) < 0)
- goto fail;
-
-
- service_set_state(s, SERVICE_START_POST);
- } else
- service_enter_running(s, true);
-
- return;
-
-fail:
- log_warning("%s failed to run start-post executable: %s", UNIT(s)->meta.id, strerror(-r));
- service_enter_stop(s, false);
-}
-
-static void service_enter_start(Service *s) {
- pid_t pid;
- int r;
-
- assert(s);
-
- assert(s->exec_command[SERVICE_EXEC_START]);
- assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
-
- if (s->type == SERVICE_FORKING)
- service_unwatch_control_pid(s);
- else
- service_unwatch_main_pid(s);
-
- if ((r = service_spawn(s,
- s->exec_command[SERVICE_EXEC_START],
- s->type == SERVICE_FORKING || s->type == SERVICE_DBUS,
- true,
- true,
- true,
- &pid)) < 0)
- goto fail;
-
- if (s->type == SERVICE_SIMPLE) {
- /* For simple services we immediately start
- * the START_POST binaries. */
-
- s->main_pid = pid;
- s->main_pid_known = true;
-
- service_enter_start_post(s);
-
- } else if (s->type == SERVICE_FORKING) {
-
- /* For forking services we wait until the start
- * process exited. */
-
- s->control_pid = pid;
-
- s->control_command_id = SERVICE_EXEC_START;
- s->control_command = s->exec_command[SERVICE_EXEC_START];
- service_set_state(s, SERVICE_START);
-
- } else if (s->type == SERVICE_FINISH ||
- s->type == SERVICE_DBUS) {
-
- /* For finishing 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. */
-
- s->main_pid = pid;
- s->main_pid_known = true;
-
- service_set_state(s, SERVICE_START);
- } else
- assert_not_reached("Unknown service type");
-
- return;
-
-fail:
- log_warning("%s failed to run start exectuable: %s", UNIT(s)->meta.id, strerror(-r));
- service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
-}
-
-static void service_enter_start_pre(Service *s) {
- int r;
-
- assert(s);
-
- service_unwatch_control_pid(s);
-
- s->control_command_id = SERVICE_EXEC_START_PRE;
- if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
- if ((r = service_spawn(s,
- s->control_command,
- true,
- false,
- !s->permissions_start_only,
- !s->root_directory_start_only,
- &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 executable: %s", UNIT(s)->meta.id, strerror(-r));
- service_enter_dead(s, false, true);
-}
-
-static void service_enter_restart(Service *s) {
- int r;
- assert(s);
-
- service_enter_dead(s, true, false);
-
- if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
- goto fail;
-
- log_debug("%s scheduled restart job.", UNIT(s)->meta.id);
- return;
-
-fail:
-
- log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r));
- service_enter_dead(s, false, false);
-}
-
-static void service_enter_reload(Service *s) {
- int r;
-
- assert(s);
-
- service_unwatch_control_pid(s);
-
- s->control_command_id = SERVICE_EXEC_RELOAD;
- if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
- if ((r = service_spawn(s,
- s->control_command,
- true,
- false,
- !s->permissions_start_only,
- !s->root_directory_start_only,
- &s->control_pid)) < 0)
- goto fail;
-
- service_set_state(s, SERVICE_RELOAD);
- } else
- service_enter_running(s, true);
-
- return;
-
-fail:
- log_warning("%s failed to run reload executable: %s", UNIT(s)->meta.id, strerror(-r));
- service_enter_stop(s, false);
-}
-
-static void service_run_next(Service *s, bool success) {
- int r;
-
- assert(s);
- assert(s->control_command);
- assert(s->control_command->command_next);
-
- if (!success)
- s->failure = true;
-
- 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_pid)) < 0)
- goto fail;
-
- return;
-
-fail:
- log_warning("%s failed to run spawn next executable: %s", UNIT(s)->meta.id, strerror(-r));
-
- if (s->state == SERVICE_START_PRE)
- service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
- else if (s->state == SERVICE_STOP)
- service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
- else if (s->state == SERVICE_STOP_POST)
- service_enter_dead(s, false, true);
- else
- service_enter_stop(s, false);
-}
-
-static int service_start(Unit *u) {
- Service *s = SERVICE(u);
-
- 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_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
-
- /* Make sure we don't enter a busy loop of some kind. */
- if (!ratelimit_test(&s->ratelimit)) {
- log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
- return -EAGAIN;
- }
-
- s->failure = false;
- s->main_pid_known = false;
- s->allow_restart = true;
-
- service_enter_start_pre(s);
- return 0;
-}
-
-static int service_stop(Unit *u) {
- Service *s = SERVICE(u);
-
- assert(s);
-
- /* Cannot do this now */
- if (s->state == SERVICE_START_PRE ||
- s->state == SERVICE_START ||
- s->state == SERVICE_START_POST ||
- s->state == SERVICE_RELOAD)
- return -EAGAIN;
-
- /* Already on it */
- if (s->state == SERVICE_STOP ||
- s->state == SERVICE_STOP_SIGTERM ||
- s->state == SERVICE_STOP_SIGKILL ||
- s->state == SERVICE_STOP_POST ||
- s->state == SERVICE_FINAL_SIGTERM ||
- s->state == SERVICE_FINAL_SIGKILL)
- return 0;
-
- if (s->state == SERVICE_AUTO_RESTART) {
- service_set_state(s, SERVICE_DEAD);
- return 0;
- }
-
- assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
-
- /* This is a user request, so don't do restarts on this
- * shutdown. */
- s->allow_restart = false;
-
- service_enter_stop(s, true);
- 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, "failure", yes_no(s->failure));
-
- if (s->control_pid > 0)
- unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) (s->control_pid));
-
- if (s->main_pid > 0)
- unit_serialize_item_format(u, f, "main-pid", "%u", (unsigned) (s->main_pid));
-
- unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
-
- /* 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);
- }
-
- return 0;
-}
-
-static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
- Service *s = SERVICE(u);
- int r;
-
- 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, "failure")) {
- int b;
-
- if ((b = parse_boolean(value)) < 0)
- log_debug("Failed to parse failure value %s", value);
- else
- s->failure = b || s->failure;
- } else if (streq(key, "control-pid")) {
- unsigned pid;
-
- if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
- log_debug("Failed to parse control-pid value %s", value);
- else
- s->control_pid = (pid_t) pid;
- } else if (streq(key, "main-pid")) {
- unsigned pid;
-
- if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
- log_debug("Failed to parse main-pid value %s", value);
- else
- s->main_pid = (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, "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
- 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);
-
- return !!s->sysv_path;
-}
-
-static bool service_check_snapshot(Unit *u) {
- Service *s = SERVICE(u);
-
- assert(s);
-
- return !s->got_socket_fd;
-}
-
-static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
- Service *s = SERVICE(u);
- bool success;
-
- assert(s);
- assert(pid >= 0);
-
- success = is_clean_exit(code, status);
- s->failure = s->failure || !success;
-
- if (s->main_pid == pid) {
-
- exec_status_fill(&s->main_exec_status, pid, code, status);
- s->main_pid = 0;
-
- if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
- assert(s->exec_command[SERVICE_EXEC_START]);
- s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
- }
-
- log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
-
- /* The service exited, so the service is officially
- * gone. */
-
- 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:
- assert(s->type == SERVICE_FINISH);
-
- /* This was our main goal, so let's go on */
- if (success)
- service_enter_start_post(s);
- else
- service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
- break;
-
- case SERVICE_RUNNING:
- service_enter_running(s, success);
- break;
-
- case SERVICE_STOP_SIGTERM:
- case SERVICE_STOP_SIGKILL:
-
- if (!control_pid_good(s))
- service_enter_stop_post(s, success);
-
- /* 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) {
-
- if (s->control_command)
- exec_status_fill(&s->control_command->exec_status, pid, code, status);
-
- s->control_pid = 0;
-
- log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
-
- /* If we are shutting things down anyway we
- * don't care about failing commands. */
-
- if (s->control_command && s->control_command->command_next && success) {
-
- /* There is another command to *
- * execute, so let's do that. */
-
- log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
- service_run_next(s, success);
-
- } 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->meta.id, service_state_to_string(s->state));
-
- switch (s->state) {
-
- case SERVICE_START_PRE:
- if (success)
- service_enter_start(s);
- else
- service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
- break;
-
- case SERVICE_START:
- assert(s->type == SERVICE_FORKING);
-
- /* Let's try to load the pid
- * file here if we can. We
- * ignore the return value,
- * since the PID file might
- * actually be created by a
- * START_POST script */
-
- if (success) {
- if (s->pid_file)
- service_load_pid_file(s);
-
- service_enter_start_post(s);
- } else
- service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
-
- break;
-
- case SERVICE_START_POST:
- if (success && s->pid_file && !s->main_pid_known) {
- int r;
-
- /* Hmm, let's see if we can
- * load the pid now after the
- * start-post scripts got
- * executed. */
-
- if ((r = service_load_pid_file(s)) < 0)
- log_warning("%s: failed to load PID file %s: %s", UNIT(s)->meta.id, s->pid_file, strerror(-r));
- }
-
- /* Fall through */
-
- case SERVICE_RELOAD:
- if (success)
- service_enter_running(s, true);
- else
- service_enter_stop(s, false);
-
- break;
-
- case SERVICE_STOP:
- service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
- break;
-
- case SERVICE_STOP_SIGTERM:
- case SERVICE_STOP_SIGKILL:
- if (main_pid_good(s) <= 0)
- service_enter_stop_post(s, success);
-
- /* 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, success, true);
- break;
-
- default:
- assert_not_reached("Uh, control process died at wrong time.");
- }
- }
- } else
- assert_not_reached("Got SIGCHLD for unkown PID");
-}
-
-static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
- Service *s = SERVICE(u);
-
- assert(s);
- assert(elapsed == 1);
-
- assert(w == &s->timer_watch);
-
- switch (s->state) {
-
- case SERVICE_START_PRE:
- case SERVICE_START:
- log_warning("%s operation timed out. Terminating.", u->meta.id);
- service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
- break;
-
- case SERVICE_START_POST:
- case SERVICE_RELOAD:
- log_warning("%s operation timed out. Stopping.", u->meta.id);
- service_enter_stop(s, false);
- break;
-
- case SERVICE_STOP:
- log_warning("%s stopping timed out. Terminating.", u->meta.id);
- service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
- break;
-
- case SERVICE_STOP_SIGTERM:
- log_warning("%s stopping timed out. Killing.", u->meta.id);
- service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
- break;
-
- case SERVICE_STOP_SIGKILL:
- /* Uh, wie 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->meta.id);
- service_enter_stop_post(s, false);
- break;
-
- case SERVICE_STOP_POST:
- log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
- service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
- break;
-
- case SERVICE_FINAL_SIGTERM:
- log_warning("%s stopping timed out (2). Killing.", u->meta.id);
- service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
- break;
-
- case SERVICE_FINAL_SIGKILL:
- log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id);
- service_enter_dead(s, false, true);
- break;
-
- case SERVICE_AUTO_RESTART:
- log_debug("%s holdoff time over, scheduling restart.", u->meta.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->meta.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_RUNNING:
- service_enter_running(s, true);
- break;
-
- default:
- ;
- }
-}
-
-static int service_enumerate(Manager *m) {
- char **p;
- unsigned i;
- DIR *d = NULL;
- char *path = NULL, *fpath = NULL, *name = NULL;
- int r;
-
- assert(m);
-
- STRV_FOREACH(p, m->sysvrcnd_path)
- for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
- struct dirent *de;
-
- free(path);
- path = NULL;
- if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
- 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))) {
- Unit *service;
- 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 = NULL;
- if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
- 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 = new(char, strlen(de->d_name) - 3 + 8 + 1))) {
- r = -ENOMEM;
- goto finish;
- }
-
- if (startswith(de->d_name+3, "boot."))
- /* Drop SuSE-style boot. prefix */
- strcpy(stpcpy(name, de->d_name + 3 + 5), ".service");
- else if (endswith(de->d_name+3, ".sh"))
- /* Drop Debian-style .sh suffix */
- strcpy(stpcpy(name, de->d_name + 3) - 3, ".service");
- else
- /* Normal init scripts */
- strcpy(stpcpy(name, de->d_name + 3), ".service");
-
- if ((r = manager_load_unit_prepare(m, name, NULL, &service)) < 0) {
- log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
- continue;
- }
-
- if (de->d_name[0] == 'S' &&
- (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_BASIC))
- SERVICE(service)->sysv_start_priority =
- MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
-
- manager_dispatch_load_queue(m);
- service = unit_follow_merge(service);
-
- if (de->d_name[0] == 'S') {
- Unit *runlevel_target;
-
- if ((r = manager_load_unit(m, rcnd_table[i].target, NULL, &runlevel_target)) < 0)
- goto finish;
-
- if ((r = unit_add_dependency(runlevel_target, UNIT_WANTS, service, true)) < 0)
- goto finish;
-
- if ((r = unit_add_dependency(service, UNIT_BEFORE, runlevel_target, true)) < 0)
- goto finish;
-
- } else if (de->d_name[0] == 'K' && rcnd_table[i].type == RUNLEVEL_DOWN) {
- Unit *shutdown_target;
-
- /* 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 distuingish here
- * between the runlevels 0 and
- * 6 and just add them to the
- * special shutdown target. */
-
- if ((r = manager_load_unit(m, SPECIAL_SHUTDOWN_TARGET, NULL, &shutdown_target)) < 0)
- goto finish;
-
- if ((r = unit_add_dependency(service, UNIT_CONFLICTS, shutdown_target, true)) < 0)
- goto finish;
-
- if ((r = unit_add_dependency(service, UNIT_BEFORE, shutdown_target, true)) < 0)
- goto finish;
- }
- }
- }
-
- r = 0;
-
-finish:
- free(path);
- free(fpath);
- free(name);
-
- if (d)
- closedir(d);
-
- return r;
-}
-
-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->meta.id, name, old_owner, new_owner);
- else if (old_owner)
- log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
- else
- log_debug("%s's D-Bus name %s now registered by %s", u->meta.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, true);
- 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->meta.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->meta.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))
- s->main_pid = pid;
-}
-
-int service_set_socket_fd(Service *s, int fd) {
- 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)->meta.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;
- return 0;
-}
-
-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_MAINTAINANCE] = "maintainance",
- [SERVICE_AUTO_RESTART] = "auto-restart",
-};
-
-DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
-
-static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
- [SERVICE_ONCE] = "once",
- [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
- [SERVICE_RESTART_ALWAYS] = "restart-always",
-};
-
-DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
-
-static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
- [SERVICE_FORKING] = "forking",
- [SERVICE_SIMPLE] = "simple",
- [SERVICE_FINISH] = "finish",
- [SERVICE_DBUS] = "dbus"
-};
-
-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);
-
-const UnitVTable service_vtable = {
- .suffix = ".service",
-
- .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,
-
- .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,
-
- .cgroup_notify_empty = service_cgroup_notify_event,
-
- .bus_name_owner_change = service_bus_name_owner_change,
- .bus_query_pid_done = service_bus_query_pid_done,
-
- .bus_message_handler = bus_service_message_handler,
-
- .enumerate = service_enumerate
-};
~ianmdlvl / elogind.git / blobdiff