X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=service.c;h=c85c6f572a62b109c11974ad8d20a307a0fd8dac;hp=2c3c0b233be3203aee90f6190d7546254f9c0c92;hb=8d567588cad053f79abe603ab113e1b85a92f1da;hpb=ceee3d82853a198884795e5d815b895468212b24
diff --git a/service.c b/service.c
index 2c3c0b233..c85c6f572 100644
--- a/service.c
+++ b/service.c
@@ -1,13 +1,51 @@
/*-*- 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 .
+***/
+
#include
#include
+#include
+#include
#include "unit.h"
#include "service.h"
#include "load-fragment.h"
#include "load-dropin.h"
#include "log.h"
+#include "strv.h"
+#include "unit-name.h"
+
+#define COMMENTS "#;\n"
+#define NEWLINES "\n\r"
+#define LINE_MAX 4096
+
+static const char * const rcnd_table[] = {
+ "/rc0.d", SPECIAL_RUNLEVEL0_TARGET,
+ "/rc1.d", SPECIAL_RUNLEVEL1_TARGET,
+ "/rc2.d", SPECIAL_RUNLEVEL2_TARGET,
+ "/rc3.d", SPECIAL_RUNLEVEL3_TARGET,
+ "/rc4.d", SPECIAL_RUNLEVEL4_TARGET,
+ "/rc5.d", SPECIAL_RUNLEVEL5_TARGET,
+ "/rc6.d", SPECIAL_RUNLEVEL6_TARGET,
+ "/boot.d", SPECIAL_BASIC_TARGET
+};
static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
[SERVICE_DEAD] = UNIT_INACTIVE,
@@ -15,6 +53,7 @@ static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
[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,
@@ -26,22 +65,35 @@ static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
[SERVICE_AUTO_RESTART] = UNIT_ACTIVATING,
};
-static const char* const state_string_table[_SERVICE_STATE_MAX] = {
- [SERVICE_DEAD] = "dead",
- [SERVICE_START_PRE] = "start-pre",
- [SERVICE_START] = "start",
- [SERVICE_START_POST] = "post",
- [SERVICE_RUNNING] = "running",
- [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",
-};
+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);
@@ -51,121 +103,798 @@ static void service_done(Unit *u) {
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_MAX);
+ 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 */
- if (s->main_pid > 0) {
- unit_unwatch_pid(u, s->main_pid);
- s->main_pid = 0;
- }
+ service_unwatch_main_pid(s);
+ service_unwatch_control_pid(s);
- if (s->control_pid > 0) {
- unit_unwatch_pid(u, s->control_pid);
- s->control_pid = 0;
+ 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))) < 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 priority_from_rcd(Service *s, const char *init_script) {
+ char **p;
+ unsigned i;
+
+ STRV_FOREACH(p, UNIT(s)->meta.manager->sysvrcnd_path)
+ for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) {
+ char *path;
+ DIR *d;
+ struct dirent *de;
+
+ if (asprintf(&path, "%s/%s", *p, rcnd_table[i]) < 0)
+ return -ENOMEM;
+
+ d = opendir(path);
+ free(path);
+
+ if (!d) {
+ 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')
+ continue;
+
+ if (strlen(de->d_name) < 4)
+ continue;
+
+ if (!streq(de->d_name + 3, init_script))
+ continue;
+
+ /* Yay, we found it! Now decode the priority */
+
+ a = undecchar(de->d_name[1]);
+ b = undecchar(de->d_name[2]);
+
+ if (a < 0 || b < 0)
+ continue;
+
+ s->sysv_start_priority = a*10 + b;
+
+ log_debug("Determined priority %i from link farm for %s", s->sysv_start_priority, UNIT(s)->meta.id);
+
+ closedir(d);
+ return 0;
+ }
+
+ closedir(d);
+ }
+
+ 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;
+ }
+
+ 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(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)) >= 0)
+ r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL);
+ }
+
+ 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);
+ 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 init scripts have no LSB header, then we enforce the
+ * ordering via the chkconfig priorities. We try to determine
+ * a priority for *all* init scripts here, since they are
+ * needed as soon as at least one non-LSB script is used. */
+
+ if (s->sysv_start_priority < 0) {
+ log_debug("%s has no chkconfig header, trying to determine SysV priority from link farm.", u->meta.id);
+
+ if ((r = priority_from_rcd(s, file_name_from_path(path))) < 0)
+ goto finish;
+
+ if (s->sysv_start_priority < 0)
+ log_warning("%s has neither a chkconfig header nor a directory link, cannot order unit!", u->meta.id);
+ }
+
+ if ((r = sysv_exec_commands(s)) < 0)
+ goto finish;
+
+ if (!s->sysv_runlevels || chars_intersect("12345", 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)) < 0 ||
+ (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL)) < 0)
+ goto finish;
+ }
+
+ /* Special setting for all SysV services */
+ s->valid_no_process = true;
+
+ /* Don't timeout special services during boot (like fsck) */
+ if (s->sysv_runlevels && !chars_intersect("12345", s->sysv_runlevels))
+ s->timeout_usec = -1;
+
+ 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);
+ 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 ... */
- return -ENOENT;
+ 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_init(Unit *u) {
+static int service_add_bus_name(Service *s) {
+ char *n;
int r;
- Service *s = SERVICE(u);
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);
- /* First, reset everything to the defaults, in case this is a
- * reload */
+ return r;
+}
+
+static void service_init(Unit *u) {
+ Service *s = SERVICE(u);
- s->type = 0;
- s->restart = 0;
+ 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);
- s->timer_watch.type = WATCH_INVALID;
+ RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
+}
- s->state = SERVICE_DEAD;
+static int service_verify(Service *s) {
+ assert(s);
- /* Load a .service file */
- r = unit_load_fragment(u);
+ if (UNIT(s)->meta.load_state != UNIT_LOADED)
+ return 0;
- /* Load a classic init script as a fallback */
- if (r == -ENOENT)
- r = service_load_sysv(s);
+ if (!s->exec_command[SERVICE_EXEC_START]) {
+ log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.id);
+ return -EINVAL;
+ }
- if (r < 0) {
- service_done(u);
- return r;
+ 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;
}
- /* Load dropin directory data */
- if ((r = unit_load_dropin(u)) < 0) {
- service_done(u);
+ 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 0;
+ return service_verify(s);
}
static void service_dump(Unit *u, FILE *f, const char *prefix) {
- static const char* const command_table[_SERVICE_EXEC_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",
- };
-
ServiceExecCommand c;
Service *s = SERVICE(u);
- char *prefix2;
+ const char *prefix2;
+ char *p2;
assert(s);
- prefix2 = strappend(prefix, "\t");
- if (!prefix2)
- prefix2 = "";
+ p2 = strappend(prefix, "\t");
+ prefix2 = p2 ? p2 : prefix;
fprintf(f,
- "%sService State: %s\n",
- prefix, state_string_table[s->state]);
+ "%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_MAX; c++) {
+ for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
if (!s->exec_command[c])
continue;
fprintf(f, "%sâ %s:\n",
- prefix, command_table[c]);
+ prefix, service_exec_command_to_string(c));
exec_command_dump_list(s->exec_command[c], f, prefix2);
}
- free(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) {
@@ -178,6 +907,8 @@ static int service_load_pid_file(Service *s) {
if (s->main_pid_known)
return 0;
+ assert(s->main_pid <= 0);
+
if (!s->pid_file)
return -ENOENT;
@@ -192,17 +923,37 @@ static int service_load_pid_file(Service *s) {
if ((unsigned long) (pid_t) p != p)
return -ERANGE;
- s->main_pid = p;
+ 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_notify_sockets(Service *s) {
+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;
@@ -211,8 +962,10 @@ static int service_notify_sockets(Service *s) {
/* Look for all socket objects that go by any of our
* units and collect their fds */
- if (!(k = unit_name_change_suffix(t, ".socket")))
- return -ENOMEM;
+ if (!(k = unit_name_change_suffix(t, ".socket"))) {
+ r = -ENOMEM;
+ goto fail;
+ }
p = manager_get_unit(UNIT(s)->meta.manager, k);
free(k);
@@ -220,9 +973,35 @@ static int service_notify_sockets(Service *s) {
if (!p)
continue;
- socket_notify_service_dead(SOCKET(p));
+ 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;
}
@@ -246,16 +1025,14 @@ static void service_set_state(Service *s, ServiceState state) {
state != SERVICE_AUTO_RESTART)
unit_unwatch_timer(UNIT(s), &s->timer_watch);
- if (state != SERVICE_START_POST &&
+ 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)
- if (s->main_pid > 0) {
- unit_unwatch_pid(UNIT(s), s->main_pid);
- s->main_pid = 0;
- }
+ service_unwatch_main_pid(s);
if (state != SERVICE_START_PRE &&
state != SERVICE_START &&
@@ -266,19 +1043,10 @@ static void service_set_state(Service *s, ServiceState state) {
state != SERVICE_STOP_SIGKILL &&
state != SERVICE_STOP_POST &&
state != SERVICE_FINAL_SIGTERM &&
- state != SERVICE_FINAL_SIGKILL)
- if (s->control_pid > 0) {
- unit_unwatch_pid(UNIT(s), s->control_pid);
- s->control_pid = 0;
- }
-
- if (state != SERVICE_START_PRE &&
- state != SERVICE_START &&
- state != SERVICE_START_POST &&
- state != SERVICE_RELOAD &&
- state != SERVICE_STOP &&
- state != SERVICE_STOP_POST)
+ state != SERVICE_FINAL_SIGKILL) {
+ service_unwatch_control_pid(s);
s->control_command = NULL;
+ }
if (state == SERVICE_DEAD ||
state == SERVICE_STOP ||
@@ -289,9 +1057,15 @@ static void service_set_state(Service *s, ServiceState state) {
state == SERVICE_FINAL_SIGKILL ||
state == SERVICE_MAINTAINANCE ||
state == SERVICE_AUTO_RESTART)
- service_notify_sockets(s);
+ 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);
- log_debug("%s changing %s â %s", unit_id(UNIT(s)), state_string_table[old_state], state_string_table[state]);
+ if (old_state != state)
+ log_debug("%s changed %s â %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]);
}
@@ -301,33 +1075,21 @@ static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
int r;
int *rfds = NULL;
unsigned rn_fds = 0;
- char *t;
+ Set *set;
+ Socket *sock;
assert(s);
assert(fds);
assert(n_fds);
- SET_FOREACH(t, UNIT(s)->meta.names, i) {
- char *k;
- Unit *p;
+ if ((r = service_get_sockets(s, &set)) < 0)
+ return r;
+
+ SET_FOREACH(sock, set, i) {
int *cfds;
unsigned cn_fds;
- /* 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 = socket_collect_fds(SOCKET(p), &cfds, &cn_fds)) < 0)
+ if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
goto fail;
if (!cfds)
@@ -357,26 +1119,44 @@ static int service_collect_fds(Service *s, int **fds, unsigned *n_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, pid_t *_pid) {
+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 ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
+ 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) {
if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
@@ -384,14 +1164,36 @@ static int service_spawn(Service *s, ExecCommand *c, bool timeout, bool pass_fds
} else
unit_unwatch_timer(UNIT(s), &s->timer_watch);
- if ((r = exec_spawn(c, &s->exec_context, fds, n_fds, &pid)) < 0)
+ 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,
+ 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;
- free(fds);
*_pid = pid;
return 0;
@@ -405,6 +1207,41 @@ fail:
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);
@@ -426,7 +1263,7 @@ static void service_enter_dead(Service *s, bool success, bool allow_restart) {
return;
fail:
- log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r));
service_enter_dead(s, false, false);
}
@@ -439,19 +1276,27 @@ static void service_enter_stop_post(Service *s, bool success) {
if (!success)
s->failure = true;
- if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
+ service_unwatch_control_pid(s);
- if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
+ 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_dead(s, true, true);
+ service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
return;
fail:
- log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to run stop-post executable: %s", UNIT(s)->meta.id, strerror(-r));
service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
}
@@ -464,42 +1309,56 @@ static void service_enter_signal(Service *s, ServiceState state, bool success) {
if (!success)
s->failure = true;
- if (s->main_pid > 0 || s->control_pid > 0) {
- int sig;
+ if (s->kill_mode != KILL_NONE) {
+ int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
- sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
+ if (s->kill_mode == KILL_CONTROL_GROUP) {
- r = 0;
- if (s->main_pid > 0) {
- if (kill(s->main_pid, sig) < 0 && errno != ESRCH)
- r = -errno;
- else
+ if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
+ if (r != -EAGAIN && r != -ESRCH)
+ goto fail;
+ } else
sent = true;
}
- if (s->control_pid > 0) {
- if (kill(s->control_pid, sig) < 0 && errno != ESRCH)
- r = -errno;
- 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 (r < 0)
+ if (sent) {
+ if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
goto fail;
service_set_state(s, state);
- } else
+ } 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_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r));
- if (sent) {
- s->failure = true;
- service_set_state(s, state);
- } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
+ if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
service_enter_stop_post(s, false);
else
service_enter_dead(s, false, true);
@@ -512,9 +1371,16 @@ static void service_enter_stop(Service *s, bool success) {
if (!success)
s->failure = true;
- if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
+ service_unwatch_control_pid(s);
- if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
+ 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);
@@ -524,27 +1390,51 @@ static void service_enter_stop(Service *s, bool success) {
return;
fail:
- log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
+ 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);
- if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
+ service_unwatch_control_pid(s);
- if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
+ 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_set_state(s, SERVICE_RUNNING);
+ service_enter_running(s, true);
return;
fail:
- log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to run start-post executable: %s", UNIT(s)->meta.id, strerror(-r));
service_enter_stop(s, false);
}
@@ -557,7 +1447,18 @@ static void service_enter_start(Service *s) {
assert(s->exec_command[SERVICE_EXEC_START]);
assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
- if ((r = service_spawn(s, s->exec_command[SERVICE_EXEC_START], s->type == SERVICE_FORKING, true, &pid)) < 0)
+ 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) {
@@ -566,6 +1467,7 @@ static void service_enter_start(Service *s) {
s->main_pid = pid;
s->main_pid_known = true;
+
service_enter_start_post(s);
} else if (s->type == SERVICE_FORKING) {
@@ -574,16 +1476,31 @@ static void service_enter_start(Service *s) {
* process exited. */
s->control_pid = pid;
+
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_id(UNIT(s)), strerror(-r));
- service_enter_stop(s, false);
+ 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) {
@@ -591,9 +1508,16 @@ static void service_enter_start_pre(Service *s) {
assert(s);
- if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
+ service_unwatch_control_pid(s);
- if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
+ 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);
@@ -603,7 +1527,7 @@ static void service_enter_start_pre(Service *s) {
return;
fail:
- log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to run start-pre executable: %s", UNIT(s)->meta.id, strerror(-r));
service_enter_dead(s, false, true);
}
@@ -611,16 +1535,17 @@ 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_id(UNIT(s)));
- service_enter_dead(s, true, false);
+ log_debug("%s scheduled restart job.", UNIT(s)->meta.id);
return;
fail:
- log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r));
service_enter_dead(s, false, false);
}
@@ -629,19 +1554,26 @@ static void service_enter_reload(Service *s) {
assert(s);
- if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
+ service_unwatch_control_pid(s);
- if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
+ 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_set_state(s, SERVICE_RUNNING);
+ service_enter_running(s, true);
return;
fail:
- log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to run reload executable: %s", UNIT(s)->meta.id, strerror(-r));
service_enter_stop(s, false);
}
@@ -657,16 +1589,26 @@ static void service_run_next(Service *s, bool success) {
s->control_command = s->control_command->command_next;
- if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
+ 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_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to run spawn next executable: %s", UNIT(s)->meta.id, strerror(-r));
- if (s->state == SERVICE_STOP)
- service_enter_stop_post(s, false);
+ 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
@@ -696,6 +1638,12 @@ static int service_start(Unit *u) {
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;
@@ -708,18 +1656,28 @@ static int service_stop(Unit *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);
+ assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
service_enter_stop(s, true);
return 0;
@@ -730,7 +1688,7 @@ static int service_reload(Unit *u) {
assert(s);
- assert(s->state == SERVICE_RUNNING);
+ assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
service_enter_reload(s);
return 0;
@@ -750,25 +1708,10 @@ static UnitActiveState service_active_state(Unit *u) {
return state_translation_table[SERVICE(u)->state];
}
-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 -1;
-}
-
-static bool control_pid_good(Service *s) {
- assert(s);
+static const char *service_sub_state_to_string(Unit *u) {
+ assert(u);
- return s->control_pid > 0;
+ return service_state_to_string(SERVICE(u)->state);
}
static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
@@ -786,12 +1729,12 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
exec_status_fill(&s->main_exec_status, pid, code, status);
s->main_pid = 0;
- if (s->type == SERVICE_SIMPLE) {
+ 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", unit_id(u), sigchld_code(code), 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. */
@@ -805,8 +1748,18 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
* 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_stop(s, success);
+ service_enter_running(s, success);
break;
case SERVICE_STOP_SIGTERM:
@@ -828,24 +1781,24 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
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", unit_id(u), sigchld_code(code), status);
+ 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->command_next &&
- (success || (s->state == SERVICE_EXEC_STOP || s->state == SERVICE_EXEC_STOP_POST)))
+ if (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 {
+ } else {
/* No further commands for this step, so let's
* figure out what to do next */
- log_debug("%s got final SIGCHLD for state %s", unit_id(u), state_string_table[s->state]);
+ log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
switch (s->state) {
@@ -853,7 +1806,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
if (success)
service_enter_start(s);
else
- service_enter_stop(s, false);
+ service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
break;
case SERVICE_START:
@@ -872,7 +1825,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
service_enter_start_post(s);
} else
- service_enter_stop(s, false);
+ service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
break;
@@ -886,28 +1839,21 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
* executed. */
if ((r = service_load_pid_file(s)) < 0)
- log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s)), s->pid_file, strerror(-r));
+ 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) {
- if (main_pid_good(s) != 0)
- service_set_state(s, SERVICE_RUNNING);
- else
- service_enter_stop(s, true);
- } else
+ if (success)
+ service_enter_running(s, true);
+ else
service_enter_stop(s, false);
break;
case SERVICE_STOP:
- if (main_pid_good(s) > 0)
- /* Still not dead and we know the PID? Let's go hunting. */
- service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
- else
- service_enter_stop_post(s, success);
+ service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
break;
case SERVICE_STOP_SIGTERM:
@@ -946,19 +1892,23 @@ static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
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.", unit_id(u));
+ 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.", unit_id(u));
+ 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.", unit_id(u));
+ log_warning("%s stopping timed out. Killing.", u->meta.id);
service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
break;
@@ -967,27 +1917,27 @@ static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
* Must be something we cannot kill, so let's just be
* weirded out and continue */
- log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u));
+ 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.", unit_id(u));
+ 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.", unit_id(u));
+ 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.", unit_id(u));
+ 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.", unit_id(u));
+ log_debug("%s holdoff time over, scheduling restart.", u->meta.id);
service_enter_restart(s);
break;
@@ -996,10 +1946,278 @@ static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
}
}
+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 += 2) {
+ struct dirent *de;
+
+ free(path);
+ path = NULL;
+ if (asprintf(&path, "%s/%s", *p, rcnd_table[i]) < 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 *runlevel, *service;
+
+ 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;
+
+ free(fpath);
+ fpath = NULL;
+ if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i], 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);
+ name = NULL;
+ if (asprintf(&name, "%s.service", de->d_name+3) < 0) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if ((r = manager_load_unit(m, name, NULL, &service)) < 0)
+ goto finish;
+
+ if ((r = manager_load_unit(m, rcnd_table[i+1], NULL, &runlevel)) < 0)
+ goto finish;
+
+ if (de->d_name[0] == 'S') {
+ if ((r = unit_add_dependency(runlevel, UNIT_WANTS, service)) < 0)
+ goto finish;
+
+ if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0)
+ goto finish;
+
+ } else if (de->d_name[0] == 'K' &&
+ (streq(rcnd_table[i+1], SPECIAL_RUNLEVEL0_TARGET) ||
+ streq(rcnd_table[i+1], SPECIAL_RUNLEVEL6_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. */
+
+ if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0)
+ goto finish;
+
+ if ((r = unit_add_dependency(runlevel, UNIT_BEFORE, service)) < 0)
+ goto finish;
+ }
+ }
+ }
+
+ r = 0;
+
+finish:
+ free(path);
+ free(fpath);
+ free(name);
+ 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;
+ 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,
+ .load = service_load,
.done = service_done,
.dump = service_dump,
@@ -1011,7 +2229,15 @@ const UnitVTable service_vtable = {
.can_reload = service_can_reload,
.active_state = service_active_state,
+ .sub_state_to_string = service_sub_state_to_string,
.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,
+
+ .enumerate = service_enumerate
};