#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"
+
+#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,
[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_AUTO_RESTART] = UNIT_ACTIVATING,
};
+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_done(Unit *u) {
Service *s = SERVICE(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);
+
+ 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;
}
- if (s->control_pid > 0) {
- unit_unwatch_pid(u, s->control_pid);
- s->control_pid = 0;
+ 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;
}
- unit_unwatch_timer(u, &s->timer_watch);
+ 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_id(UNIT(s)));
+
+ 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)) >= 0)
+ r = unit_add_dependency_by_name(u, UNIT_BEFORE, m);
+ }
+
+ 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);
+ 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.", unit_id(u));
+
+ 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!", unit_id(u));
+ }
+
+ 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)) < 0 ||
+ (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET)) < 0)
+ goto finish;
+ }
+
+ /* Special setting for all SysV services */
+ s->valid_no_process = true;
+
+ 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_id(UNIT(s))))
+ 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_id(UNIT(s)))
+ 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) {
- int r;
+static void service_init(Unit *u) {
Service *s = SERVICE(u);
- assert(s);
-
- /* First, reset everything to the defaults, in case this is a
- * reload */
+ assert(u);
+ assert(u->meta.load_state == UNIT_STUB);
s->type = 0;
s->restart = 0;
s->state = SERVICE_DEAD;
+ s->sysv_start_priority = -1;
+ s->permissions_start_only = false;
+ s->root_directory_start_only = false;
+ s->valid_no_process = false;
+ s->kill_mode = 0;
+ s->sysv_has_lsb = false;
+ s->main_pid = s->control_pid = 0;
+ s->main_pid_known = false;
+ s->failure = false;
+
RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
+}
+
+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_id(UNIT(s)));
+ 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) {
- service_done(u);
+ if ((r = unit_load_fragment(u)) < 0)
return r;
- }
- /* Load a classic init script as a fallback, if we couldn*t find anything */
- if (r == 0)
- if ((r = service_load_sysv(s)) <= 0) {
- service_done(u);
- return r < 0 ? r : -ENOENT;
- }
+ /* 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;
- /* Load dropin directory data */
- if ((r = unit_load_dropin(u)) < 0) {
- service_done(u);
+ /* 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;
}
- return 0;
+ return service_verify(s);
}
static void service_dump(Unit *u, FILE *f, const char *prefix) {
prefix2 = p2 ? p2 : prefix;
fprintf(f,
- "%sService State: %s\n",
- prefix, service_state_to_string(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);
-
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;
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);
}
if (s->main_pid_known)
return 0;
+ assert(s->main_pid <= 0);
+
if (!s->pid_file)
return -ENOENT;
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_notify_sockets_dead(Service *s) {
Iterator i;
Set *set;
Socket *sock;
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 &&
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 ||
state == SERVICE_FINAL_SIGKILL ||
state == SERVICE_MAINTAINANCE ||
state == SERVICE_AUTO_RESTART)
- service_notify_sockets(s);
+ service_notify_sockets_dead(s);
- log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state));
+ if (old_state != state)
+ log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state));
unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
}
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;
} else
unit_unwatch_timer(UNIT(s), &s->timer_watch);
- if ((r = exec_spawn(c, &s->exec_context, fds, n_fds, &pid)) < 0)
+ if ((r = exec_spawn(c,
+ &s->exec_context,
+ fds, n_fds,
+ apply_permissions,
+ apply_chroot,
+ UNIT(s)->meta.manager->confirm_spawn,
+ UNIT(s)->meta.cgroup_bondings,
+ &pid)) < 0)
goto fail;
if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
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 ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]))
- if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
- goto fail;
+ service_unwatch_control_pid(s);
+ 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);
- if (!s->control_command)
- service_enter_dead(s, true, true);
+ 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 executable: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to run stop-post executable: %s", unit_id(UNIT(s)), strerror(-r));
service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
}
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 (r < 0)
- goto fail;
+ 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;
+ }
}
- service_set_state(s, state);
+ if (sent) {
+ if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
+ goto fail;
- if (s->main_pid <= 0 && s->control_pid <= 0)
+ 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_id(UNIT(s)), 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);
if (!success)
s->failure = true;
- if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP]))
- if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
- goto fail;
+ service_unwatch_control_pid(s);
- service_set_state(s, SERVICE_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;
- if (!s->control_command)
+ service_set_state(s, SERVICE_STOP);
+ } else
service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
return;
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)
+ 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]))
- if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
- goto fail;
+ service_unwatch_control_pid(s);
+ 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);
- if (!s->control_command)
- service_set_state(s, SERVICE_RUNNING);
+ service_set_state(s, SERVICE_START_POST);
+ } else
+ service_enter_running(s, true);
return;
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,
+ true,
+ true,
+ true,
+ &pid)) < 0)
goto fail;
- service_set_state(s, SERVICE_START);
-
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) {
* 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) {
/* For finishing services we wait until the start
* process exited, too, but it is our main process. */
s->main_pid = pid;
+ s->main_pid_known = true;
+
s->control_command = s->exec_command[SERVICE_EXEC_START];
+ service_set_state(s, SERVICE_START);
} else
assert_not_reached("Unknown service type");
fail:
log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r));
- service_enter_stop(s, false);
+ service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
}
static void service_enter_start_pre(Service *s) {
assert(s);
- if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]))
- if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
- goto fail;
+ service_unwatch_control_pid(s);
- service_set_state(s, SERVICE_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;
- if (!s->control_command)
+ service_set_state(s, SERVICE_START_PRE);
+ } else
service_enter_start(s);
return;
assert(s);
- if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]))
- if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
- goto fail;
+ service_unwatch_control_pid(s);
- service_set_state(s, SERVICE_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;
- if (!s->control_command)
- service_set_state(s, SERVICE_RUNNING);
+ service_set_state(s, SERVICE_RELOAD);
+ } else
+ service_enter_running(s, true);
return;
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));
- 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
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;
assert(s);
- assert(s->state == SERVICE_RUNNING);
+ assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
service_enter_reload(s);
return 0;
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);
-
- return s->control_pid > 0;
-}
-
static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
Service *s = SERVICE(u);
bool success;
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_to_string(code), status);
+ log_debug("%s: main process exited, code=%s, status=%i", unit_id(u), sigchld_code_to_string(code), status);
/* The service exited, so the service is officially
* gone. */
if (success)
service_enter_start_post(s);
else
- service_enter_stop(s, false);
+ 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:
/* 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", unit_id(u), 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 */
if (success)
service_enter_start(s);
else
- service_enter_stop(s, false);
+ service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
break;
case SERVICE_START:
service_enter_start_post(s);
} else
- service_enter_stop(s, false);
+ service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
break;
/* 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:
case SERVICE_START_PRE:
case SERVICE_START:
+ log_warning("%s operation timed out. Terminating.", unit_id(u));
+ 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));
}
}
+static void service_cgroup_notify_event(Unit *u) {
+ Service *s = SERVICE(u);
+
+ assert(u);
+
+ log_debug("%s: cgroup is empty", unit_id(u));
+
+ 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, &service)) < 0)
+ goto finish;
+
+ if ((r = manager_load_unit(m, rcnd_table[i+1], &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 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",
static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
[SERVICE_ONCE] = "once",
[SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
- [SERVICE_RESTART_ALWAYS] = "restart-on-failure",
+ [SERVICE_RESTART_ALWAYS] = "restart-always",
};
DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
-static const char* const service_exec_command_table[_SERVICE_EXEC_MAX] = {
+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",
.suffix = ".service",
.init = service_init,
+ .load = service_load,
.done = service_done,
.dump = service_dump,
.sigchld_event = service_sigchld_event,
.timer_event = service_timer_event,
+
+ .cgroup_notify_empty = service_cgroup_notify_event,
+
+ .enumerate = service_enumerate
};
~ianmdlvl / elogind.git / blobdiff