blob: 5cf9b21890e46d3866a418e87ae74847e9497313 [file] [log] [blame] [raw]
/* SPDX-License-Identifier: LGPL-2.1+ */
#include <fcntl.h>
#include "alloc-util.h"
#include "async.h"
#include "bus-internal.h"
#include "bus-util.h"
#include "dbus-cgroup.h"
#include "dbus-execute.h"
#include "dbus-kill.h"
#include "dbus-manager.h"
#include "dbus-service.h"
#include "dbus-util.h"
#include "exit-status.h"
#include "fd-util.h"
#include "fileio.h"
#include "parse-util.h"
#include "path-util.h"
#include "service.h"
#include "signal-util.h"
#include "string-util.h"
#include "strv.h"
#include "unit.h"
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, service_type, ServiceType);
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_result, service_result, ServiceResult);
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_restart, service_restart, ServiceRestart);
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_notify_access, notify_access, NotifyAccess);
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_emergency_action, emergency_action, EmergencyAction);
static BUS_DEFINE_PROPERTY_GET(property_get_timeout_abort_usec, "t", Service, service_timeout_abort_usec);
static int property_get_exit_status_set(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
const ExitStatusSet *status_set = userdata;
unsigned n;
Iterator i;
int r;
assert(bus);
assert(reply);
assert(status_set);
r = sd_bus_message_open_container(reply, 'r', "aiai");
if (r < 0)
return r;
r = sd_bus_message_open_container(reply, 'a', "i");
if (r < 0)
return r;
BITMAP_FOREACH(n, &status_set->status, i) {
assert(n < 256);
r = sd_bus_message_append_basic(reply, 'i', &n);
if (r < 0)
return r;
}
r = sd_bus_message_close_container(reply);
if (r < 0)
return r;
r = sd_bus_message_open_container(reply, 'a', "i");
if (r < 0)
return r;
BITMAP_FOREACH(n, &status_set->signal, i) {
const char *str;
str = signal_to_string(n);
if (!str)
continue;
r = sd_bus_message_append_basic(reply, 'i', &n);
if (r < 0)
return r;
}
r = sd_bus_message_close_container(reply);
if (r < 0)
return r;
return sd_bus_message_close_container(reply);
}
const sd_bus_vtable bus_service_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_PROPERTY("Type", "s", property_get_type, offsetof(Service, type), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Restart", "s", property_get_restart, offsetof(Service, restart), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("PIDFile", "s", NULL, offsetof(Service, pid_file), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("NotifyAccess", "s", property_get_notify_access, offsetof(Service, notify_access), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("RestartUSec", "t", bus_property_get_usec, offsetof(Service, restart_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("TimeoutStartUSec", "t", bus_property_get_usec, offsetof(Service, timeout_start_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("TimeoutStopUSec", "t", bus_property_get_usec, offsetof(Service, timeout_stop_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("TimeoutAbortUSec", "t", property_get_timeout_abort_usec, 0, 0),
SD_BUS_PROPERTY("RuntimeMaxUSec", "t", bus_property_get_usec, offsetof(Service, runtime_max_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("WatchdogUSec", "t", bus_property_get_usec, offsetof(Service, watchdog_usec), SD_BUS_VTABLE_PROPERTY_CONST),
BUS_PROPERTY_DUAL_TIMESTAMP("WatchdogTimestamp", offsetof(Service, watchdog_timestamp), 0),
SD_BUS_PROPERTY("PermissionsStartOnly", "b", bus_property_get_bool, offsetof(Service, permissions_start_only), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN), /* 😷 deprecated */
SD_BUS_PROPERTY("RootDirectoryStartOnly", "b", bus_property_get_bool, offsetof(Service, root_directory_start_only), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("RemainAfterExit", "b", bus_property_get_bool, offsetof(Service, remain_after_exit), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("GuessMainPID", "b", bus_property_get_bool, offsetof(Service, guess_main_pid), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("RestartPreventExitStatus", "(aiai)", property_get_exit_status_set, offsetof(Service, restart_prevent_status), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("RestartForceExitStatus", "(aiai)", property_get_exit_status_set, offsetof(Service, restart_force_status), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("SuccessExitStatus", "(aiai)", property_get_exit_status_set, offsetof(Service, success_status), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("MainPID", "u", bus_property_get_pid, offsetof(Service, main_pid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("ControlPID", "u", bus_property_get_pid, offsetof(Service, control_pid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("BusName", "s", NULL, offsetof(Service, bus_name), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("FileDescriptorStoreMax", "u", bus_property_get_unsigned, offsetof(Service, n_fd_store_max), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("NFileDescriptorStore", "u", bus_property_get_unsigned, offsetof(Service, n_fd_store), 0),
SD_BUS_PROPERTY("StatusText", "s", NULL, offsetof(Service, status_text), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("StatusErrno", "i", bus_property_get_int, offsetof(Service, status_errno), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("Result", "s", property_get_result, offsetof(Service, result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("ReloadResult", "s", property_get_result, offsetof(Service, reload_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("CleanResult", "s", property_get_result, offsetof(Service, clean_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("USBFunctionDescriptors", "s", NULL, offsetof(Service, usb_function_descriptors), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("USBFunctionStrings", "s", NULL, offsetof(Service, usb_function_strings), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("UID", "u", bus_property_get_uid, offsetof(Unit, ref_uid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("GID", "u", bus_property_get_gid, offsetof(Unit, ref_gid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("NRestarts", "u", bus_property_get_unsigned, offsetof(Service, n_restarts), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("OOMPolicy", "s", bus_property_get_oom_policy, offsetof(Service, oom_policy), SD_BUS_VTABLE_PROPERTY_CONST),
BUS_EXEC_STATUS_VTABLE("ExecMain", offsetof(Service, main_exec_status), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
BUS_EXEC_COMMAND_LIST_VTABLE("ExecCondition", offsetof(Service, exec_command[SERVICE_EXEC_CONDITION]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_EX_COMMAND_LIST_VTABLE("ExecConditionEx", offsetof(Service, exec_command[SERVICE_EXEC_CONDITION]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_COMMAND_LIST_VTABLE("ExecStartPre", offsetof(Service, exec_command[SERVICE_EXEC_START_PRE]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_EX_COMMAND_LIST_VTABLE("ExecStartPreEx", offsetof(Service, exec_command[SERVICE_EXEC_START_PRE]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_COMMAND_LIST_VTABLE("ExecStart", offsetof(Service, exec_command[SERVICE_EXEC_START]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_EX_COMMAND_LIST_VTABLE("ExecStartEx", offsetof(Service, exec_command[SERVICE_EXEC_START]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_COMMAND_LIST_VTABLE("ExecStartPost", offsetof(Service, exec_command[SERVICE_EXEC_START_POST]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_EX_COMMAND_LIST_VTABLE("ExecStartPostEx", offsetof(Service, exec_command[SERVICE_EXEC_START_POST]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_COMMAND_LIST_VTABLE("ExecReload", offsetof(Service, exec_command[SERVICE_EXEC_RELOAD]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_EX_COMMAND_LIST_VTABLE("ExecReloadEx", offsetof(Service, exec_command[SERVICE_EXEC_RELOAD]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_COMMAND_LIST_VTABLE("ExecStop", offsetof(Service, exec_command[SERVICE_EXEC_STOP]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_EX_COMMAND_LIST_VTABLE("ExecStopEx", offsetof(Service, exec_command[SERVICE_EXEC_STOP]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_COMMAND_LIST_VTABLE("ExecStopPost", offsetof(Service, exec_command[SERVICE_EXEC_STOP_POST]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_EX_COMMAND_LIST_VTABLE("ExecStopPostEx", offsetof(Service, exec_command[SERVICE_EXEC_STOP_POST]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
/* The following four are obsolete, and thus marked hidden here. They moved into the Unit interface */
SD_BUS_PROPERTY("StartLimitInterval", "t", bus_property_get_usec, offsetof(Unit, start_ratelimit.interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
SD_BUS_PROPERTY("StartLimitBurst", "u", bus_property_get_unsigned, offsetof(Unit, start_ratelimit.burst), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
SD_BUS_PROPERTY("StartLimitAction", "s", property_get_emergency_action, offsetof(Unit, start_limit_action), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
SD_BUS_PROPERTY("FailureAction", "s", property_get_emergency_action, offsetof(Unit, failure_action), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
SD_BUS_PROPERTY("RebootArgument", "s", NULL, offsetof(Unit, reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
SD_BUS_VTABLE_END
};
static int bus_set_transient_exit_status(
Unit *u,
const char *name,
ExitStatusSet *status_set,
sd_bus_message *message,
UnitWriteFlags flags,
sd_bus_error *error) {
const int32_t *status, *signal;
size_t n_status, n_signal, i;
int r;
r = sd_bus_message_enter_container(message, 'r', "aiai");
if (r < 0)
return r;
r = sd_bus_message_read_array(message, 'i', (const void **) &status, &n_status);
if (r < 0)
return r;
r = sd_bus_message_read_array(message, 'i', (const void **) &signal, &n_signal);
if (r < 0)
return r;
r = sd_bus_message_exit_container(message);
if (r < 0)
return r;
n_status /= sizeof(int32_t);
n_signal /= sizeof(int32_t);
if (n_status == 0 && n_signal == 0 && !UNIT_WRITE_FLAGS_NOOP(flags)) {
exit_status_set_free(status_set);
unit_write_settingf(u, flags, name, "%s=", name);
return 1;
}
for (i = 0; i < n_status; i++) {
if (status[i] < 0 || status[i] > 255)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid status code in %s: %"PRIi32, name, status[i]);
if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
r = bitmap_set(&status_set->status, status[i]);
if (r < 0)
return r;
unit_write_settingf(u, flags, name, "%s=%"PRIi32, name, status[i]);
}
}
for (i = 0; i < n_signal; i++) {
const char *str;
str = signal_to_string((int) signal[i]);
if (!str)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal in %s: %"PRIi32, name, signal[i]);
if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
r = bitmap_set(&status_set->signal, signal[i]);
if (r < 0)
return r;
unit_write_settingf(u, flags, name, "%s=%s", name, str);
}
}
return 1;
}
static int bus_set_transient_std_fd(
Unit *u,
const char *name,
int *p,
bool *b,
sd_bus_message *message,
UnitWriteFlags flags,
sd_bus_error *error) {
int fd, r;
assert(p);
assert(b);
r = sd_bus_message_read(message, "h", &fd);
if (r < 0)
return r;
if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
int copy;
copy = fcntl(fd, F_DUPFD_CLOEXEC, 3);
if (copy < 0)
return -errno;
asynchronous_close(*p);
*p = copy;
*b = true;
}
return 1;
}
static BUS_DEFINE_SET_TRANSIENT_PARSE(notify_access, NotifyAccess, notify_access_from_string);
static BUS_DEFINE_SET_TRANSIENT_PARSE(service_type, ServiceType, service_type_from_string);
static BUS_DEFINE_SET_TRANSIENT_PARSE(service_restart, ServiceRestart, service_restart_from_string);
static BUS_DEFINE_SET_TRANSIENT_PARSE(oom_policy, OOMPolicy, oom_policy_from_string);
static BUS_DEFINE_SET_TRANSIENT_STRING_WITH_CHECK(bus_name, service_name_is_valid);
static int bus_service_set_transient_property(
Service *s,
const char *name,
sd_bus_message *message,
UnitWriteFlags flags,
sd_bus_error *error) {
Unit *u = UNIT(s);
ServiceExecCommand ci;
int r;
assert(s);
assert(name);
assert(message);
flags |= UNIT_PRIVATE;
if (streq(name, "PermissionsStartOnly"))
return bus_set_transient_bool(u, name, &s->permissions_start_only, message, flags, error);
if (streq(name, "RootDirectoryStartOnly"))
return bus_set_transient_bool(u, name, &s->root_directory_start_only, message, flags, error);
if (streq(name, "RemainAfterExit"))
return bus_set_transient_bool(u, name, &s->remain_after_exit, message, flags, error);
if (streq(name, "GuessMainPID"))
return bus_set_transient_bool(u, name, &s->guess_main_pid, message, flags, error);
if (streq(name, "Type"))
return bus_set_transient_service_type(u, name, &s->type, message, flags, error);
if (streq(name, "OOMPolicy"))
return bus_set_transient_oom_policy(u, name, &s->oom_policy, message, flags, error);
if (streq(name, "RestartUSec"))
return bus_set_transient_usec(u, name, &s->restart_usec, message, flags, error);
if (streq(name, "TimeoutStartUSec")) {
r = bus_set_transient_usec(u, name, &s->timeout_start_usec, message, flags, error);
if (r >= 0 && !UNIT_WRITE_FLAGS_NOOP(flags))
s->start_timeout_defined = true;
return r;
}
if (streq(name, "TimeoutStopUSec"))
return bus_set_transient_usec(u, name, &s->timeout_stop_usec, message, flags, error);
if (streq(name, "TimeoutAbortUSec")) {
r = bus_set_transient_usec(u, name, &s->timeout_abort_usec, message, flags, error);
if (r >= 0 && !UNIT_WRITE_FLAGS_NOOP(flags))
s->timeout_abort_set = true;
return r;
}
if (streq(name, "RuntimeMaxUSec"))
return bus_set_transient_usec(u, name, &s->runtime_max_usec, message, flags, error);
if (streq(name, "WatchdogUSec"))
return bus_set_transient_usec(u, name, &s->watchdog_usec, message, flags, error);
if (streq(name, "FileDescriptorStoreMax"))
return bus_set_transient_unsigned(u, name, &s->n_fd_store_max, message, flags, error);
if (streq(name, "NotifyAccess"))
return bus_set_transient_notify_access(u, name, &s->notify_access, message, flags, error);
if (streq(name, "PIDFile")) {
_cleanup_free_ char *n = NULL;
const char *v, *e;
r = sd_bus_message_read(message, "s", &v);
if (r < 0)
return r;
if (!isempty(v)) {
n = path_make_absolute(v, u->manager->prefix[EXEC_DIRECTORY_RUNTIME]);
if (!n)
return -ENOMEM;
path_simplify(n, true);
if (!path_is_normalized(n))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "PIDFile= path '%s' is not valid", n);
e = path_startswith(n, "/var/run/");
if (e) {
char *z;
z = path_join("/run", e);
if (!z)
return log_oom();
if (!UNIT_WRITE_FLAGS_NOOP(flags))
log_unit_notice(u, "Transient unit's PIDFile= property references path below legacy directory /var/run, updating %s → %s; please update client accordingly.", n, z);
free_and_replace(n, z);
}
}
if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
free_and_replace(s->pid_file, n);
unit_write_settingf(u, flags, name, "%s=%s", name, strempty(s->pid_file));
}
return 1;
}
if (streq(name, "USBFunctionDescriptors"))
return bus_set_transient_path(u, name, &s->usb_function_descriptors, message, flags, error);
if (streq(name, "USBFunctionStrings"))
return bus_set_transient_path(u, name, &s->usb_function_strings, message, flags, error);
if (streq(name, "BusName"))
return bus_set_transient_bus_name(u, name, &s->bus_name, message, flags, error);
if (streq(name, "Restart"))
return bus_set_transient_service_restart(u, name, &s->restart, message, flags, error);
if (streq(name, "RestartPreventExitStatus"))
return bus_set_transient_exit_status(u, name, &s->restart_prevent_status, message, flags, error);
if (streq(name, "RestartForceExitStatus"))
return bus_set_transient_exit_status(u, name, &s->restart_force_status, message, flags, error);
if (streq(name, "SuccessExitStatus"))
return bus_set_transient_exit_status(u, name, &s->success_status, message, flags, error);
ci = service_exec_command_from_string(name);
ci = (ci >= 0) ? ci : service_exec_ex_command_from_string(name);
if (ci >= 0)
return bus_set_transient_exec_command(u, name, &s->exec_command[ci], message, flags, error);
if (streq(name, "StandardInputFileDescriptor"))
return bus_set_transient_std_fd(u, name, &s->stdin_fd, &s->exec_context.stdio_as_fds, message, flags, error);
if (streq(name, "StandardOutputFileDescriptor"))
return bus_set_transient_std_fd(u, name, &s->stdout_fd, &s->exec_context.stdio_as_fds, message, flags, error);
if (streq(name, "StandardErrorFileDescriptor"))
return bus_set_transient_std_fd(u, name, &s->stderr_fd, &s->exec_context.stdio_as_fds, message, flags, error);
return 0;
}
int bus_service_set_property(
Unit *u,
const char *name,
sd_bus_message *message,
UnitWriteFlags flags,
sd_bus_error *error) {
Service *s = SERVICE(u);
int r;
assert(s);
assert(name);
assert(message);
r = bus_cgroup_set_property(u, &s->cgroup_context, name, message, flags, error);
if (r != 0)
return r;
if (u->transient && u->load_state == UNIT_STUB) {
/* This is a transient unit, let's load a little more */
r = bus_service_set_transient_property(s, name, message, flags, error);
if (r != 0)
return r;
r = bus_exec_context_set_transient_property(u, &s->exec_context, name, message, flags, error);
if (r != 0)
return r;
r = bus_kill_context_set_transient_property(u, &s->kill_context, name, message, flags, error);
if (r != 0)
return r;
}
return 0;
}
int bus_service_commit_properties(Unit *u) {
assert(u);
unit_invalidate_cgroup_members_masks(u);
unit_realize_cgroup(u);
return 0;
}