picnoir/Systemd
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity
Systemd/src/core/dbus-service.c
Lennart Poettering 0c69794138 tree-wide: remove Lennart's copyright lines 
These lines are generally out-of-date, incomplete and unnecessary. With
SPDX and git repository much more accurate and fine grained information
about licensing and authorship is available, hence let's drop the
per-file copyright notice. Of course, removing copyright lines of others
is problematic, hence this commit only removes my own lines and leaves
all others untouched. It might be nicer if sooner or later those could
go away too, making git the only and accurate source of authorship
information.
2018-06-14 10:20:20 +02:00

400 lines
18 KiB
C
Raw Blame History

/* SPDX-License-Identifier: LGPL-2.1+ */
#include <stdio_ext.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-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 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) {
ExitStatusSet *status_set = userdata;
Iterator i;
void *id;
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;
SET_FOREACH(id, status_set->status, i) {
int val = PTR_TO_INT(id);
if (val < 0 || val > 255)
continue;
r = sd_bus_message_append_basic(reply, 'i', &val);
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;
SET_FOREACH(id, status_set->signal, i) {
int val = PTR_TO_INT(id);
const char *str;
str = signal_to_string(val);
if (!str)
continue;
r = sd_bus_message_append_basic(reply, 'i', &val);
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("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_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("USBFunctionDescriptors", "s", NULL, offsetof(Service, usb_function_descriptors), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("USBFunctionStrings", "s", NULL, offsetof(Service, usb_function_strings), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
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),
BUS_EXEC_STATUS_VTABLE("ExecMain", offsetof(Service, main_exec_status), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
BUS_EXEC_COMMAND_LIST_VTABLE("ExecStartPre", 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_COMMAND_LIST_VTABLE("ExecStartPost", 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 int *status, *signal;
size_t sz_status, sz_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, &sz_status);
if (r < 0)
return r;
r = sd_bus_message_read_array(message, 'i', (const void **) &signal, &sz_signal);
if (r < 0)
return r;
r = sd_bus_message_exit_container(message);
if (r < 0)
return r;
if (sz_status == 0 && sz_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 < sz_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: %i", name, status[i]);
if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
r = set_ensure_allocated(&status_set->status, NULL);
if (r < 0)
return r;
r = set_put(status_set->status, INT_TO_PTR(status[i]));
if (r < 0)
return r;
unit_write_settingf(u, flags, name, "%s=%i", name, status[i]);
}
}
for (i = 0; i < sz_signal; i++) {
const char *str;
str = signal_to_string(signal[i]);
if (!str)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal in %s: %i", name, signal[i]);
if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
r = set_ensure_allocated(&status_set->signal, NULL);
if (r < 0)
return r;
r = set_put(status_set->signal, INT_TO_PTR(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_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, "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"))
return bus_set_transient_path(u, name, &s->pid_file, message, flags, error);
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);
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_update_cgroup_members_masks(u);
unit_realize_cgroup(u);
return 0;
}
Reference in a new issue View git blame Copy permalink