| /* 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("TimeoutCleanUSec", "t", bus_property_get_usec, offsetof(Service, timeout_clean_usec), SD_BUS_VTABLE_PROPERTY_CONST), |
| 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_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_COMMAND_LIST_VTABLE("ExecStop", 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), |
| |
| /* 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_limit.interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN), |
| SD_BUS_PROPERTY("StartLimitBurst", "u", bus_property_get_unsigned, offsetof(Unit, start_limit.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, "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; |
| } |