X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=service.c;h=fda553d22580d12235529a252b13eb9b57027c4e;hp=ae7fc36a5c4bedd54ac35516443316139e139c0f;hb=f278026d21e2ded46f7f91152d60842525e74956;hpb=bd982a8baeabbaf4a09a382a64acc243ef7104c5
diff --git a/service.c b/service.c
index ae7fc36a5..fda553d22 100644
--- a/service.c
+++ b/service.c
@@ -1,13 +1,50 @@
/*-*- 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"
+
+#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
+};
+
static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
[SERVICE_DEAD] = UNIT_INACTIVE,
@@ -26,23 +63,6 @@ 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_done(Unit *u) {
Service *s = SERVICE(u);
@@ -51,6 +71,9 @@ static void service_done(Unit *u) {
free(s->pid_file);
s->pid_file = NULL;
+ free(s->sysv_path);
+ s->sysv_path = NULL;
+
exec_context_done(&s->exec_context);
exec_command_free_array(s->exec_command, _SERVICE_EXEC_MAX);
s->control_command = NULL;
@@ -70,20 +93,559 @@ static void service_done(Unit *u) {
unit_unwatch_timer(u, &s->timer_watch);
}
-static int service_load_sysv(Service *s) {
+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 (s->sysv_has_lsb && 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->sysvinit_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, UnitLoadState *new_state) {
+ FILE *f;
+ Unit *u;
+ unsigned line = 0;
+ int r;
+ enum {
+ NORMAL,
+ DESCRIPTION,
+ LSB,
+ LSB_DESCRIPTION
+ } state = NORMAL;
+
+ assert(s);
+ assert(path);
+ assert(new_state);
+
+ 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;
+
+ state = NORMAL;
+
+ if (sscanf(t+10, "%*15s %i %*i",
+ &start_priority) != 1) {
+
+ 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);
+ continue;
+ }
+
+ s->sysv_start_priority = start_priority;
+
+ } 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;
+
+ if (!(r = unit_add_dependency_by_name(u, UNIT_AFTER, m)) < 0) {
+ free(m);
+ goto finish;
+ }
+
+ r = unit_add_dependency_by_name(
+ u,
+ startswith(t, "Required-Start:") ? UNIT_REQUIRES : UNIT_WANTS,
+ m);
+ free(m);
+
+ if (r < 0)
+ goto finish;
+ }
+
+ } 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;
+ }
+
+ free(u->meta.description);
+ 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 ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_SYSINIT_SERVICE)) < 0 ||
+ (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_SYSINIT_SERVICE)) < 0)
+ goto finish;
+
+ *new_state = UNIT_LOADED;
+ r = 0;
+
+finish:
+
+ if (f)
+ fclose(f);
+
+ return r;
+}
+
+static int service_load_sysv_name(Service *s, const char *name, UnitLoadState *new_state) {
+ 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, new_state);
+ free(path);
+
+ if (r < 0)
+ return r;
+
+ if (*new_state != UNIT_STUB)
+ break;
+ }
+
+ return 0;
+}
+
+static int service_load_sysv(Service *s, UnitLoadState *new_state) {
+ const char *t;
+ Iterator i;
+ int r;
+
+ assert(s);
+ assert(new_state);
/* 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, new_state)) < 0)
+ return r;
+
+ if (*new_state == UNIT_STUB)
+ SET_FOREACH(t, UNIT(s)->meta.names, i) {
+ if ((r == service_load_sysv_name(s, t, new_state)) < 0)
+ return r;
+
+ if (*new_state != UNIT_STUB)
+ break;
+ }
+
+ return 0;
}
-static int service_init(Unit *u) {
+static int service_init(Unit *u, UnitLoadState *new_state) {
int r;
Service *s = SERVICE(u);
assert(s);
+ assert(new_state);
+ assert(*new_state == UNIT_STUB);
/* First, reset everything to the defaults, in case this is a
* reload */
@@ -100,22 +662,42 @@ static int service_init(Unit *u) {
s->state = SERVICE_DEAD;
- /* Load a .service file */
- r = unit_load_fragment(u);
+ s->sysv_start_priority = -1;
+ s->permissions_start_only = false;
+ s->root_directory_start_only = false;
+
+ s->sysv_has_lsb = false;
- /* Load a classic init script as a fallback */
- if (r == -ENOENT)
- r = service_load_sysv(s);
+ RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
- if (r < 0) {
- service_done(u);
+ /* Load a .service file */
+ if ((r = unit_load_fragment(u, new_state)) < 0)
return r;
- }
- /* Load dropin directory data */
- if ((r = unit_load_dropin(u)) < 0) {
- service_done(u);
+ /* Load a classic init script as a fallback, if we couldn't find anything */
+ if (*new_state == UNIT_STUB)
+ if ((r = service_load_sysv(s, new_state)) < 0)
+ return r;
+
+ /* Still nothing found? Then let's give up */
+ if (*new_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 (*new_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;
@@ -123,35 +705,33 @@ static int service_init(Unit *u) {
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"
+ "%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, service_type_to_string(s->type));
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++) {
@@ -160,12 +740,25 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) {
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);
+
+
+ free(p2);
}
static int service_load_pid_file(Service *s) {
@@ -198,6 +791,73 @@ static int service_load_pid_file(Service *s) {
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(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);
@@ -218,7 +878,8 @@ 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 &&
@@ -252,7 +913,18 @@ static void service_set_state(Service *s, ServiceState state) {
state != SERVICE_STOP_POST)
s->control_command = NULL;
- log_debug("%s changing %s â %s", unit_id(UNIT(s)), state_string_table[old_state], state_string_table[state]);
+ 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(s);
+
+ log_debug("%s changed %s â %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]);
}
@@ -262,33 +934,21 @@ 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)
@@ -318,14 +978,27 @@ 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;
@@ -345,7 +1018,13 @@ 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 ((r = exec_spawn(c,
+ &s->exec_context,
+ fds, n_fds,
+ apply_permissions,
+ apply_chroot,
+ UNIT(s)->meta.cgroup_bondings,
+ &pid)) < 0)
goto fail;
if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
@@ -400,13 +1079,20 @@ 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])) {
-
- 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_set_state(s, SERVICE_STOP_POST);
+
+ if (!s->control_command)
service_enter_dead(s, true, true);
return;
@@ -447,9 +1133,11 @@ static void service_enter_signal(Service *s, ServiceState state, bool success) {
if (r < 0)
goto fail;
+ }
- service_set_state(s, state);
- } else
+ service_set_state(s, state);
+
+ if (s->main_pid <= 0 && s->control_pid <= 0)
service_enter_dead(s, true, true);
return;
@@ -473,13 +1161,19 @@ static void service_enter_stop(Service *s, bool success) {
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)
+ 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_set_state(s, SERVICE_STOP);
+
+ if (!s->control_command)
service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
return;
@@ -493,13 +1187,20 @@ 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)
+ 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_START_POST);
+
+ if (!s->control_command)
service_set_state(s, SERVICE_RUNNING);
return;
@@ -518,9 +1219,17 @@ 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 ((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. */
@@ -536,7 +1245,13 @@ static void service_enter_start(Service *s) {
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->control_command = s->exec_command[SERVICE_EXEC_START];
} else
assert_not_reached("Unknown service type");
@@ -552,13 +1267,19 @@ 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)
+ 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_set_state(s, SERVICE_START_PRE);
+
+ if (!s->control_command)
service_enter_start(s);
return;
@@ -590,13 +1311,19 @@ static void service_enter_reload(Service *s) {
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)
+ 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_RELOAD);
+
+ if (!s->control_command)
service_set_state(s, SERVICE_RUNNING);
return;
@@ -618,7 +1345,13 @@ 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)
+ 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;
@@ -657,6 +1390,12 @@ 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.", unit_id(u));
+ return -EAGAIN;
+ }
+
s->failure = false;
s->main_pid_known = false;
@@ -723,7 +1462,7 @@ static int main_pid_good(Service *s) {
return s->main_pid > 0;
/* We don't know the pid */
- return -1;
+ return -EAGAIN;
}
static bool control_pid_good(Service *s) {
@@ -732,6 +1471,15 @@ static bool control_pid_good(Service *s) {
return s->control_pid > 0;
}
+static int cgroup_good(Service *s) {
+ assert(s);
+
+ if (s->valid_no_process)
+ return -EAGAIN;
+
+ return cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings);
+}
+
static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
Service *s = SERVICE(u);
bool success;
@@ -747,12 +1495,12 @@ 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", unit_id(u), sigchld_code_to_string(code), status);
/* The service exited, so the service is officially
* gone. */
@@ -766,6 +1514,16 @@ 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_stop(s, false);
+ break;
+
case SERVICE_RUNNING:
service_enter_stop(s, success);
break;
@@ -789,13 +1547,13 @@ 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", unit_id(u), 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)))
+ (success || (s->state == SERVICE_STOP || s->state == SERVICE_STOP_POST)))
/* There is another command to *
* execute, so let's do that. */
@@ -806,7 +1564,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
/* 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", unit_id(u), service_state_to_string(s->state));
switch (s->state) {
@@ -854,7 +1612,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
case SERVICE_RELOAD:
if (success) {
- if (main_pid_good(s) != 0)
+ if (main_pid_good(s) != 0 && cgroup_good(s) != 0)
service_set_state(s, SERVICE_RUNNING);
else
service_enter_stop(s, true);
@@ -957,6 +1715,187 @@ 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", 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:
+
+ if (!s->valid_no_process && main_pid_good(s) <= 0)
+ service_enter_stop(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->sysvinit_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_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-on-failure",
+};
+
+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"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
+
+static const char* const service_exec_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",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
+
const UnitVTable service_vtable = {
.suffix = ".service",
@@ -975,4 +1914,8 @@ const UnitVTable service_vtable = {
.sigchld_event = service_sigchld_event,
.timer_event = service_timer_event,
+
+ .cgroup_notify_empty = service_cgroup_notify_event,
+
+ .enumerate = service_enumerate
};