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Diffstat (limited to 'src/libcore/service.c')
-rw-r--r--src/libcore/service.c135
1 files changed, 61 insertions, 74 deletions
diff --git a/src/libcore/service.c b/src/libcore/service.c
index ac7e41d777..7ebabca5d6 100644
--- a/src/libcore/service.c
+++ b/src/libcore/service.c
@@ -113,7 +113,6 @@ static void service_init(Unit *u) {
s->runtime_max_usec = USEC_INFINITY;
s->type = _SERVICE_TYPE_INVALID;
s->socket_fd = -1;
- s->bus_endpoint_fd = -1;
s->stdin_fd = s->stdout_fd = s->stderr_fd = -1;
s->guess_main_pid = true;
@@ -181,20 +180,17 @@ static int service_set_main_pid(Service *s, pid_t pid) {
return 0;
}
-static void service_close_socket_fd(Service *s) {
+void service_close_socket_fd(Service *s) {
assert(s);
- s->socket_fd = asynchronous_close(s->socket_fd);
-}
-
-static void service_connection_unref(Service *s) {
- assert(s);
+ /* Undo the effect of service_set_socket_fd(). */
- if (!UNIT_ISSET(s->accept_socket))
- return;
+ s->socket_fd = asynchronous_close(s->socket_fd);
- socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
- unit_ref_unset(&s->accept_socket);
+ if (UNIT_ISSET(s->accept_socket)) {
+ socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
+ unit_ref_unset(&s->accept_socket);
+ }
}
static void service_stop_watchdog(Service *s) {
@@ -321,9 +317,7 @@ static void service_done(Unit *u) {
s->bus_name_owner = mfree(s->bus_name_owner);
- s->bus_endpoint_fd = safe_close(s->bus_endpoint_fd);
service_close_socket_fd(s);
- service_connection_unref(s);
unit_ref_unset(&s->accept_socket);
@@ -525,7 +519,7 @@ static int service_add_default_dependencies(Service *s) {
/* Add a number of automatic dependencies useful for the
* majority of services. */
- if (UNIT(s)->manager->running_as == MANAGER_SYSTEM) {
+ if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) {
/* First, pull in the really early boot stuff, and
* require it, so that we fail if we can't acquire
* it. */
@@ -834,7 +828,7 @@ static int service_load_pid_file(Service *s, bool may_warn) {
return 0;
}
-static int service_search_main_pid(Service *s) {
+static void service_search_main_pid(Service *s) {
pid_t pid = 0;
int r;
@@ -843,30 +837,24 @@ static int service_search_main_pid(Service *s) {
/* If we know it anyway, don't ever fallback to unreliable
* heuristics */
if (s->main_pid_known)
- return 0;
+ return;
if (!s->guess_main_pid)
- return 0;
+ return;
assert(s->main_pid <= 0);
- r = unit_search_main_pid(UNIT(s), &pid);
- if (r < 0)
- return r;
+ if (unit_search_main_pid(UNIT(s), &pid) < 0)
+ return;
log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid);
- r = service_set_main_pid(s, pid);
- if (r < 0)
- return r;
+ if (service_set_main_pid(s, pid) < 0)
+ return;
r = unit_watch_pid(UNIT(s), pid);
- if (r < 0) {
+ if (r < 0)
/* FIXME: we need to do something here */
log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid);
- return r;
- }
-
- return 0;
}
static void service_set_state(Service *s, ServiceState state) {
@@ -918,17 +906,15 @@ static void service_set_state(Service *s, ServiceState state) {
SERVICE_RUNNING, SERVICE_RELOAD,
SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) &&
- !(state == SERVICE_DEAD && UNIT(s)->job)) {
+ !(state == SERVICE_DEAD && UNIT(s)->job))
service_close_socket_fd(s);
- service_connection_unref(s);
- }
if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
service_stop_watchdog(s);
/* For the inactive states unit_notify() will trim the cgroup,
* but for exit we have to do that ourselves... */
- if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
+ if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager))
unit_prune_cgroup(UNIT(s));
/* For remain_after_exit services, let's see if we can "release" the
@@ -944,7 +930,7 @@ static void service_set_state(Service *s, ServiceState state) {
if (ec && exec_context_may_touch_console(ec)) {
Manager *m = UNIT(s)->manager;
- m->n_on_console --;
+ m->n_on_console--;
if (m->n_on_console == 0)
/* unset no_console_output flag, since the console is free */
m->no_console_output = false;
@@ -1157,7 +1143,6 @@ static int service_spawn(
pid_t *_pid) {
_cleanup_strv_free_ char **argv = NULL, **final_env = NULL, **our_env = NULL, **fd_names = NULL;
- _cleanup_free_ char *bus_endpoint_path = NULL;
_cleanup_free_ int *fds = NULL;
unsigned n_fds = 0, n_env = 0;
const char *path;
@@ -1167,7 +1152,6 @@ static int service_spawn(
.apply_permissions = apply_permissions,
.apply_chroot = apply_chroot,
.apply_tty_stdin = apply_tty_stdin,
- .bus_endpoint_fd = -1,
.stdin_fd = -1,
.stdout_fd = -1,
.stderr_fd = -1,
@@ -1221,7 +1205,7 @@ static int service_spawn(
if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0)
return -ENOMEM;
- if (UNIT(s)->manager->running_as != MANAGER_SYSTEM)
+ if (!MANAGER_IS_SYSTEM(UNIT(s)->manager))
if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid()) < 0)
return -ENOMEM;
@@ -1267,18 +1251,6 @@ static int service_spawn(
} else
path = UNIT(s)->cgroup_path;
- if (s->exec_context.bus_endpoint) {
- r = bus_kernel_create_endpoint(UNIT(s)->manager->running_as == MANAGER_SYSTEM ? "system" : "user",
- UNIT(s)->id, &bus_endpoint_path);
- if (r < 0)
- return r;
-
- /* Pass the fd to the exec_params so that the child process can upload the policy.
- * Keep a reference to the fd in the service, so the endpoint is kept alive as long
- * as the service is running. */
- exec_params.bus_endpoint_fd = s->bus_endpoint_fd = r;
- }
-
exec_params.argv = argv;
exec_params.fds = fds;
exec_params.fd_names = fd_names;
@@ -1290,7 +1262,6 @@ static int service_spawn(
exec_params.cgroup_delegate = s->cgroup_context.delegate;
exec_params.runtime_prefix = manager_get_runtime_prefix(UNIT(s)->manager);
exec_params.watchdog_usec = s->watchdog_usec;
- exec_params.bus_endpoint_path = bus_endpoint_path;
exec_params.selinux_context_net = s->socket_fd_selinux_context_net;
if (s->type == SERVICE_IDLE)
exec_params.idle_pipe = UNIT(s)->manager->idle_pipe;
@@ -1986,6 +1957,7 @@ fail:
static int service_start(Unit *u) {
Service *s = SERVICE(u);
+ int r;
assert(s);
@@ -2012,6 +1984,13 @@ static int service_start(Unit *u) {
assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED));
+ /* Make sure we don't enter a busy loop of some kind. */
+ r = unit_start_limit_test(u);
+ if (r < 0) {
+ service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false);
+ return r;
+ }
+
s->result = SERVICE_SUCCESS;
s->reload_result = SERVICE_SUCCESS;
s->main_pid_known = false;
@@ -2126,9 +2105,6 @@ static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
r = unit_serialize_item_fd(u, f, fds, "socket-fd", s->socket_fd);
if (r < 0)
return r;
- r = unit_serialize_item_fd(u, f, fds, "endpoint-fd", s->bus_endpoint_fd);
- if (r < 0)
- return r;
LIST_FOREACH(fd_store, fs, s->fd_store) {
_cleanup_free_ char *c = NULL;
@@ -2154,8 +2130,7 @@ static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
}
}
- if (dual_timestamp_is_set(&s->watchdog_timestamp))
- dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
+ dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart));
@@ -2263,15 +2238,6 @@ static int service_deserialize_item(Unit *u, const char *key, const char *value,
asynchronous_close(s->socket_fd);
s->socket_fd = fdset_remove(fds, fd);
}
- } else if (streq(key, "endpoint-fd")) {
- int fd;
-
- if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
- log_unit_debug(u, "Failed to parse endpoint-fd value: %s", value);
- else {
- safe_close(s->bus_endpoint_fd);
- s->bus_endpoint_fd = fdset_remove(fds, fd);
- }
} else if (streq(key, "fd-store-fd")) {
const char *fdv;
size_t pf;
@@ -2759,7 +2725,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
break;
}
} else
- (void) service_search_main_pid(s);
+ service_search_main_pid(s);
service_enter_start_post(s);
break;
@@ -2781,16 +2747,15 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
break;
}
} else
- (void) service_search_main_pid(s);
+ service_search_main_pid(s);
service_enter_running(s, SERVICE_SUCCESS);
break;
case SERVICE_RELOAD:
- if (f == SERVICE_SUCCESS) {
- service_load_pid_file(s, true);
- (void) service_search_main_pid(s);
- }
+ if (f == SERVICE_SUCCESS)
+ if (service_load_pid_file(s, true) < 0)
+ service_search_main_pid(s);
s->reload_result = f;
service_enter_running(s, SERVICE_SUCCESS);
@@ -3176,9 +3141,8 @@ int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context
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. */
+ /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs
+ * to be configured. We take ownership of the passed fd on success. */
if (UNIT(s)->load_state != UNIT_LOADED)
return -EINVAL;
@@ -3206,12 +3170,15 @@ int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context
return r;
}
+ r = unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
+ if (r < 0)
+ return r;
+
s->socket_fd = fd;
s->socket_fd_selinux_context_net = selinux_context_net;
unit_ref_set(&s->accept_socket, UNIT(sock));
-
- return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
+ return 0;
}
static void service_reset_failed(Unit *u) {
@@ -3232,6 +3199,22 @@ static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {
return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error);
}
+static int service_main_pid(Unit *u) {
+ Service *s = SERVICE(u);
+
+ assert(s);
+
+ return s->main_pid;
+}
+
+static int service_control_pid(Unit *u) {
+ Service *s = SERVICE(u);
+
+ assert(s);
+
+ return s->control_pid;
+}
+
static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
[SERVICE_RESTART_NO] = "no",
[SERVICE_RESTART_ON_SUCCESS] = "on-success",
@@ -3291,6 +3274,7 @@ static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
[SERVICE_FAILURE_SIGNAL] = "signal",
[SERVICE_FAILURE_CORE_DUMP] = "core-dump",
[SERVICE_FAILURE_WATCHDOG] = "watchdog",
+ [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit",
};
DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
@@ -3340,6 +3324,9 @@ const UnitVTable service_vtable = {
.notify_cgroup_empty = service_notify_cgroup_empty_event,
.notify_message = service_notify_message,
+ .main_pid = service_main_pid,
+ .control_pid = service_control_pid,
+
.bus_name_owner_change = service_bus_name_owner_change,
.bus_vtable = bus_service_vtable,
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-18 18:10:29 +0000