/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
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 Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see .
***/
#include
#include
#include "dbus.h"
#include "log.h"
#include "dbus-manager.h"
#include "strv.h"
#include "bus-errors.h"
#include "build.h"
#include "dbus-common.h"
#include "install.h"
#include "watchdog.h"
#include "hwclock.h"
#include "path-util.h"
#define BUS_MANAGER_INTERFACE_BEGIN \
" \n"
#define BUS_MANAGER_INTERFACE_METHODS \
" \n" \
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#define BUS_MANAGER_INTERFACE_SIGNALS \
" \n" \
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" " \
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#define BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL \
" \n" \
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#ifdef HAVE_SYSV_COMPAT
#define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV \
" \n" \
" \n" \
" \n"
#else
#define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV
#endif
#define BUS_MANAGER_INTERFACE_END \
" \n"
#define BUS_MANAGER_INTERFACE \
BUS_MANAGER_INTERFACE_BEGIN \
BUS_MANAGER_INTERFACE_METHODS \
BUS_MANAGER_INTERFACE_SIGNALS \
BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL \
BUS_MANAGER_INTERFACE_PROPERTIES_SYSV \
BUS_MANAGER_INTERFACE_END
#define INTROSPECTION_BEGIN \
DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
"\n" \
BUS_MANAGER_INTERFACE \
BUS_PROPERTIES_INTERFACE \
BUS_PEER_INTERFACE \
BUS_INTROSPECTABLE_INTERFACE
#define INTROSPECTION_END \
"\n"
#define INTERFACES_LIST \
BUS_GENERIC_INTERFACES_LIST \
"org.freedesktop.systemd1.Manager\0"
const char bus_manager_interface[] _introspect_("Manager") = BUS_MANAGER_INTERFACE;
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_exec_output, exec_output, ExecOutput);
static int bus_manager_append_tainted(DBusMessageIter *i, const char *property, void *data) {
const char *t;
Manager *m = data;
char buf[LINE_MAX] = "", *e = buf, *p = NULL;
assert(i);
assert(property);
assert(m);
if (m->taint_usr)
e = stpcpy(e, "split-usr:");
if (readlink_malloc("/etc/mtab", &p) < 0)
e = stpcpy(e, "mtab-not-symlink:");
else
free(p);
if (access("/proc/cgroups", F_OK) < 0)
e = stpcpy(e, "cgroups-missing:");
if (hwclock_is_localtime() > 0)
e = stpcpy(e, "local-hwclock:");
/* remove the last ':' */
if (e != buf)
e[-1] = 0;
t = buf;
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
return -ENOMEM;
return 0;
}
static int bus_manager_append_log_target(DBusMessageIter *i, const char *property, void *data) {
const char *t;
assert(i);
assert(property);
t = log_target_to_string(log_get_target());
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
return -ENOMEM;
return 0;
}
static int bus_manager_set_log_target(DBusMessageIter *i, const char *property, void *data) {
const char *t;
assert(i);
assert(property);
dbus_message_iter_get_basic(i, &t);
return log_set_target_from_string(t);
}
static int bus_manager_append_log_level(DBusMessageIter *i, const char *property, void *data) {
const char *t;
assert(i);
assert(property);
t = log_level_to_string(log_get_max_level());
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
return -ENOMEM;
return 0;
}
static int bus_manager_set_log_level(DBusMessageIter *i, const char *property, void *data) {
const char *t;
assert(i);
assert(property);
dbus_message_iter_get_basic(i, &t);
return log_set_max_level_from_string(t);
}
static int bus_manager_append_n_names(DBusMessageIter *i, const char *property, void *data) {
Manager *m = data;
uint32_t u;
assert(i);
assert(property);
assert(m);
u = hashmap_size(m->units);
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
return -ENOMEM;
return 0;
}
static int bus_manager_append_n_jobs(DBusMessageIter *i, const char *property, void *data) {
Manager *m = data;
uint32_t u;
assert(i);
assert(property);
assert(m);
u = hashmap_size(m->jobs);
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
return -ENOMEM;
return 0;
}
static int bus_manager_append_progress(DBusMessageIter *i, const char *property, void *data) {
double d;
Manager *m = data;
assert(i);
assert(property);
assert(m);
if (dual_timestamp_is_set(&m->finish_timestamp))
d = 1.0;
else
d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_DOUBLE, &d))
return -ENOMEM;
return 0;
}
static const char *message_get_sender_with_fallback(DBusMessage *m) {
const char *s;
assert(m);
if ((s = dbus_message_get_sender(m)))
return s;
/* When the message came in from a direct connection the
* message will have no sender. We fix that here. */
return ":no-sender";
}
static DBusMessage *message_from_file_changes(
DBusMessage *m,
UnitFileChange *changes,
unsigned n_changes,
int carries_install_info) {
DBusMessageIter iter, sub, sub2;
DBusMessage *reply;
unsigned i;
reply = dbus_message_new_method_return(m);
if (!reply)
return NULL;
dbus_message_iter_init_append(reply, &iter);
if (carries_install_info >= 0) {
dbus_bool_t b;
b = !!carries_install_info;
if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b))
goto oom;
}
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sss)", &sub))
goto oom;
for (i = 0; i < n_changes; i++) {
const char *type, *path, *source;
type = unit_file_change_type_to_string(changes[i].type);
path = strempty(changes[i].path);
source = strempty(changes[i].source);
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &path) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &source) ||
!dbus_message_iter_close_container(&sub, &sub2))
goto oom;
}
if (!dbus_message_iter_close_container(&iter, &sub))
goto oom;
return reply;
oom:
dbus_message_unref(reply);
return NULL;
}
static int bus_manager_send_unit_files_changed(Manager *m) {
DBusMessage *s;
int r;
s = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitFilesChanged");
if (!s)
return -ENOMEM;
r = bus_broadcast(m, s);
dbus_message_unref(s);
return r;
}
static int bus_manager_append_have_watchdog(DBusMessageIter *i, const char *property, void *data) {
dbus_bool_t b;
assert(i);
assert(property);
b = access("/dev/watchdog", F_OK) >= 0;
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
return -ENOMEM;
return 0;
}
static int bus_manager_set_runtime_watchdog_usec(DBusMessageIter *i, const char *property, void *data) {
uint64_t *t = data;
assert(i);
assert(property);
dbus_message_iter_get_basic(i, t);
return watchdog_set_timeout(t);
}
static const char systemd_property_string[] =
PACKAGE_STRING "\0"
DISTRIBUTION "\0"
SYSTEMD_FEATURES;
static const BusProperty bus_systemd_properties[] = {
{ "Version", bus_property_append_string, "s", 0 },
{ "Distribution", bus_property_append_string, "s", sizeof(PACKAGE_STRING) },
{ "Features", bus_property_append_string, "s", sizeof(PACKAGE_STRING) + sizeof(DISTRIBUTION) },
{ NULL, }
};
static const BusProperty bus_manager_properties[] = {
{ "RunningAs", bus_manager_append_running_as, "s", offsetof(Manager, running_as) },
{ "Tainted", bus_manager_append_tainted, "s", 0 },
{ "InitRDTimestamp", bus_property_append_uint64, "t", offsetof(Manager, initrd_timestamp.realtime) },
{ "InitRDTimestampMonotonic", bus_property_append_uint64, "t", offsetof(Manager, initrd_timestamp.monotonic) },
{ "StartupTimestamp", bus_property_append_uint64, "t", offsetof(Manager, startup_timestamp.realtime) },
{ "StartupTimestampMonotonic", bus_property_append_uint64, "t", offsetof(Manager, startup_timestamp.monotonic) },
{ "FinishTimestamp", bus_property_append_uint64, "t", offsetof(Manager, finish_timestamp.realtime) },
{ "FinishTimestampMonotonic", bus_property_append_uint64, "t", offsetof(Manager, finish_timestamp.monotonic) },
{ "LogLevel", bus_manager_append_log_level, "s", 0, false, bus_manager_set_log_level },
{ "LogTarget", bus_manager_append_log_target, "s", 0, false, bus_manager_set_log_target },
{ "NNames", bus_manager_append_n_names, "u", 0 },
{ "NJobs", bus_manager_append_n_jobs, "u", 0 },
{ "NInstalledJobs",bus_property_append_uint32, "u", offsetof(Manager, n_installed_jobs) },
{ "NFailedJobs", bus_property_append_uint32, "u", offsetof(Manager, n_failed_jobs) },
{ "Progress", bus_manager_append_progress, "d", 0 },
{ "Environment", bus_property_append_strv, "as", offsetof(Manager, environment), true },
{ "ConfirmSpawn", bus_property_append_bool, "b", offsetof(Manager, confirm_spawn) },
{ "ShowStatus", bus_property_append_bool, "b", offsetof(Manager, show_status) },
{ "UnitPath", bus_property_append_strv, "as", offsetof(Manager, lookup_paths.unit_path), true },
{ "NotifySocket", bus_property_append_string, "s", offsetof(Manager, notify_socket), true },
{ "ControlGroupHierarchy", bus_property_append_string, "s", offsetof(Manager, cgroup_hierarchy), true },
{ "DefaultControllers", bus_property_append_strv, "as", offsetof(Manager, default_controllers), true },
{ "DefaultStandardOutput", bus_manager_append_exec_output, "s", offsetof(Manager, default_std_output) },
{ "DefaultStandardError", bus_manager_append_exec_output, "s", offsetof(Manager, default_std_error) },
{ "RuntimeWatchdogUSec", bus_property_append_usec, "t", offsetof(Manager, runtime_watchdog), false, bus_manager_set_runtime_watchdog_usec },
{ "ShutdownWatchdogUSec", bus_property_append_usec, "t", offsetof(Manager, shutdown_watchdog), false, bus_property_set_usec },
{ "HaveWatchdog", bus_manager_append_have_watchdog, "b", 0 },
#ifdef HAVE_SYSV_COMPAT
{ "SysVConsole", bus_property_append_bool, "b", offsetof(Manager, sysv_console) },
{ "SysVInitPath", bus_property_append_strv, "as", offsetof(Manager, lookup_paths.sysvinit_path), true },
{ "SysVRcndPath", bus_property_append_strv, "as", offsetof(Manager, lookup_paths.sysvrcnd_path), true },
#endif
{ NULL, }
};
static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
Manager *m = data;
int r;
DBusError error;
DBusMessage *reply = NULL;
char * path = NULL;
JobType job_type = _JOB_TYPE_INVALID;
bool reload_if_possible = false;
const char *member;
assert(connection);
assert(message);
assert(m);
dbus_error_init(&error);
member = dbus_message_get_member(message);
if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
const char *name;
Unit *u;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (!(u = manager_get_unit(m, name))) {
dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
if (!(path = unit_dbus_path(u)))
goto oom;
if (!dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitByPID")) {
Unit *u;
uint32_t pid;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_UINT32, &pid,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (!(u = cgroup_unit_by_pid(m, (pid_t) pid))) {
dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "No unit for PID %lu is loaded.", (unsigned long) pid);
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
if (!(path = unit_dbus_path(u)))
goto oom;
if (!dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
const char *name;
Unit *u;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
return bus_send_error_reply(connection, message, &error, r);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
if (!(path = unit_dbus_path(u)))
goto oom;
if (!dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit"))
job_type = JOB_START;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
job_type = JOB_START;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit"))
job_type = JOB_STOP;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit"))
job_type = JOB_RELOAD;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit"))
job_type = JOB_RESTART;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit"))
job_type = JOB_TRY_RESTART;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrRestartUnit")) {
reload_if_possible = true;
job_type = JOB_RESTART;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrTryRestartUnit")) {
reload_if_possible = true;
job_type = JOB_TRY_RESTART;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KillUnit")) {
const char *name, *swho, *smode;
int32_t signo;
Unit *u;
KillMode mode;
KillWho who;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_STRING, &swho,
DBUS_TYPE_STRING, &smode,
DBUS_TYPE_INT32, &signo,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (isempty(swho))
who = KILL_ALL;
else {
who = kill_who_from_string(swho);
if (who < 0)
return bus_send_error_reply(connection, message, &error, -EINVAL);
}
if (isempty(smode))
mode = KILL_CONTROL_GROUP;
else {
mode = kill_mode_from_string(smode);
if (mode < 0)
return bus_send_error_reply(connection, message, &error, -EINVAL);
}
if (signo <= 0 || signo >= _NSIG)
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (!(u = manager_get_unit(m, name))) {
dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
if ((r = unit_kill(u, who, mode, signo, &error)) < 0)
return bus_send_error_reply(connection, message, &error, r);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
uint32_t id;
Job *j;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_UINT32, &id,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (!(j = manager_get_job(m, id))) {
dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
if (!(path = job_dbus_path(j)))
goto oom;
if (!dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
manager_clear_jobs(m);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailed")) {
manager_reset_failed(m);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailedUnit")) {
const char *name;
Unit *u;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (!(u = manager_get_unit(m, name))) {
dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
unit_reset_failed(u);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
DBusMessageIter iter, sub;
Iterator i;
Unit *u;
const char *k;
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
dbus_message_iter_init_append(reply, &iter);
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssssouso)", &sub))
goto oom;
HASHMAP_FOREACH_KEY(u, k, m->units, i) {
char *u_path, *j_path;
const char *description, *load_state, *active_state, *sub_state, *sjob_type, *following;
DBusMessageIter sub2;
uint32_t job_id;
Unit *f;
if (k != u->id)
continue;
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
goto oom;
description = unit_description(u);
load_state = unit_load_state_to_string(u->load_state);
active_state = unit_active_state_to_string(unit_active_state(u));
sub_state = unit_sub_state_to_string(u);
f = unit_following(u);
following = f ? f->id : "";
if (!(u_path = unit_dbus_path(u)))
goto oom;
if (u->job) {
job_id = (uint32_t) u->job->id;
if (!(j_path = job_dbus_path(u->job))) {
free(u_path);
goto oom;
}
sjob_type = job_type_to_string(u->job->type);
} else {
job_id = 0;
j_path = u_path;
sjob_type = "";
}
if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->id) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &following) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
free(u_path);
if (u->job)
free(j_path);
goto oom;
}
free(u_path);
if (u->job)
free(j_path);
if (!dbus_message_iter_close_container(&sub, &sub2))
goto oom;
}
if (!dbus_message_iter_close_container(&iter, &sub))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
DBusMessageIter iter, sub;
Iterator i;
Job *j;
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
dbus_message_iter_init_append(reply, &iter);
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
goto oom;
HASHMAP_FOREACH(j, m->jobs, i) {
char *u_path, *j_path;
const char *state, *type;
uint32_t id;
DBusMessageIter sub2;
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
goto oom;
id = (uint32_t) j->id;
state = job_state_to_string(j->state);
type = job_type_to_string(j->type);
if (!(j_path = job_dbus_path(j)))
goto oom;
if (!(u_path = unit_dbus_path(j->unit))) {
free(j_path);
goto oom;
}
if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->id) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
free(j_path);
free(u_path);
goto oom;
}
free(j_path);
free(u_path);
if (!dbus_message_iter_close_container(&sub, &sub2))
goto oom;
}
if (!dbus_message_iter_close_container(&iter, &sub))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
char *client;
Set *s;
if (!(s = BUS_CONNECTION_SUBSCRIBED(m, connection))) {
if (!(s = set_new(string_hash_func, string_compare_func)))
goto oom;
if (!(dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL))) {
set_free(s);
goto oom;
}
}
if (!(client = strdup(message_get_sender_with_fallback(message))))
goto oom;
if ((r = set_put(s, client)) < 0) {
free(client);
return bus_send_error_reply(connection, message, NULL, r);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
char *client;
if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message)))) {
dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
free(client);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
FILE *f;
char *dump = NULL;
size_t size;
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
if (!(f = open_memstream(&dump, &size)))
goto oom;
manager_dump_units(m, f, NULL);
manager_dump_jobs(m, f, NULL);
if (ferror(f)) {
fclose(f);
free(dump);
goto oom;
}
fclose(f);
if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
free(dump);
goto oom;
}
free(dump);
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
const char *name;
dbus_bool_t cleanup;
Snapshot *s;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_BOOLEAN, &cleanup,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (name && name[0] == 0)
name = NULL;
if ((r = snapshot_create(m, name, cleanup, &error, &s)) < 0)
return bus_send_error_reply(connection, message, &error, r);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
if (!(path = unit_dbus_path(UNIT(s))))
goto oom;
if (!dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
char *introspection = NULL;
FILE *f;
Iterator i;
Unit *u;
Job *j;
const char *k;
size_t size;
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
/* We roll our own introspection code here, instead of
* relying on bus_default_message_handler() because we
* need to generate our introspection string
* dynamically. */
if (!(f = open_memstream(&introspection, &size)))
goto oom;
fputs(INTROSPECTION_BEGIN, f);
HASHMAP_FOREACH_KEY(u, k, m->units, i) {
char *p;
if (k != u->id)
continue;
if (!(p = bus_path_escape(k))) {
fclose(f);
free(introspection);
goto oom;
}
fprintf(f, "", p);
free(p);
}
HASHMAP_FOREACH(j, m->jobs, i)
fprintf(f, "", (unsigned long) j->id);
fputs(INTROSPECTION_END, f);
if (ferror(f)) {
fclose(f);
free(introspection);
goto oom;
}
fclose(f);
if (!introspection)
goto oom;
if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
free(introspection);
goto oom;
}
free(introspection);
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
assert(!m->queued_message);
/* Instead of sending the reply back right away, we
* just remember that we need to and then send it
* after the reload is finished. That way the caller
* knows when the reload finished. */
if (!(m->queued_message = dbus_message_new_method_return(message)))
goto oom;
m->queued_message_connection = connection;
m->exit_code = MANAGER_RELOAD;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
/* We don't send a reply back here, the client should
* just wait for us disconnecting. */
m->exit_code = MANAGER_REEXECUTE;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
if (m->running_as == MANAGER_SYSTEM) {
dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for user service managers.");
return bus_send_error_reply(connection, message, &error, -ENOTSUP);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
m->exit_code = MANAGER_EXIT;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reboot")) {
if (m->running_as != MANAGER_SYSTEM) {
dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
return bus_send_error_reply(connection, message, &error, -ENOTSUP);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
m->exit_code = MANAGER_REBOOT;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PowerOff")) {
if (m->running_as != MANAGER_SYSTEM) {
dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
return bus_send_error_reply(connection, message, &error, -ENOTSUP);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
m->exit_code = MANAGER_POWEROFF;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Halt")) {
if (m->running_as != MANAGER_SYSTEM) {
dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Halting is only supported for system managers.");
return bus_send_error_reply(connection, message, &error, -ENOTSUP);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
m->exit_code = MANAGER_HALT;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KExec")) {
if (m->running_as != MANAGER_SYSTEM) {
dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "kexec is only supported for system managers.");
return bus_send_error_reply(connection, message, &error, -ENOTSUP);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
m->exit_code = MANAGER_KEXEC;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SwitchRoot")) {
const char *switch_root, *switch_root_init;
char *u, *v;
int k;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &switch_root,
DBUS_TYPE_STRING, &switch_root_init,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (path_equal(switch_root, "/") || !is_path(switch_root))
return bus_send_error_reply(connection, message, NULL, -EINVAL);
if (!isempty(switch_root_init) && !is_path(switch_root_init))
return bus_send_error_reply(connection, message, NULL, -EINVAL);
if (m->running_as != MANAGER_SYSTEM) {
dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Switching root is only supported for system managers.");
return bus_send_error_reply(connection, message, &error, -ENOTSUP);
}
/* Safety check */
if (isempty(switch_root_init))
k = access(switch_root, F_OK);
else {
char *p;
p = join(switch_root, "/", switch_root_init, NULL);
if (!p)
goto oom;
k = access(p, X_OK);
free(p);
}
if (k < 0)
return bus_send_error_reply(connection, message, NULL, -errno);
u = strdup(switch_root);
if (!u)
goto oom;
if (!isempty(switch_root_init)) {
v = strdup(switch_root_init);
if (!v) {
free(u);
goto oom;
}
} else
v = NULL;
free(m->switch_root);
free(m->switch_root_init);
m->switch_root = u;
m->switch_root_init = v;
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
m->exit_code = MANAGER_SWITCH_ROOT;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
char **l = NULL, **e = NULL;
if ((r = bus_parse_strv(message, &l)) < 0) {
if (r == -ENOMEM)
goto oom;
return bus_send_error_reply(connection, message, NULL, r);
}
e = strv_env_merge(2, m->environment, l);
strv_free(l);
if (!e)
goto oom;
if (!(reply = dbus_message_new_method_return(message))) {
strv_free(e);
goto oom;
}
strv_free(m->environment);
m->environment = e;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
char **l = NULL, **e = NULL;
if ((r = bus_parse_strv(message, &l)) < 0) {
if (r == -ENOMEM)
goto oom;
return bus_send_error_reply(connection, message, NULL, r);
}
e = strv_env_delete(m->environment, 1, l);
strv_free(l);
if (!e)
goto oom;
if (!(reply = dbus_message_new_method_return(message))) {
strv_free(e);
goto oom;
}
strv_free(m->environment);
m->environment = e;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetAndSetEnvironment")) {
char **l_set = NULL, **l_unset = NULL, **e = NULL, **f = NULL;
DBusMessageIter iter;
if (!dbus_message_iter_init(message, &iter))
goto oom;
r = bus_parse_strv_iter(&iter, &l_unset);
if (r < 0) {
if (r == -ENOMEM)
goto oom;
return bus_send_error_reply(connection, message, NULL, r);
}
if (!dbus_message_iter_next(&iter)) {
strv_free(l_unset);
return bus_send_error_reply(connection, message, NULL, -EINVAL);
}
r = bus_parse_strv_iter(&iter, &l_set);
if (r < 0) {
strv_free(l_unset);
if (r == -ENOMEM)
goto oom;
return bus_send_error_reply(connection, message, NULL, r);
}
e = strv_env_delete(m->environment, 1, l_unset);
strv_free(l_unset);
if (!e) {
strv_free(l_set);
goto oom;
}
f = strv_env_merge(2, e, l_set);
strv_free(l_set);
strv_free(e);
if (!f)
goto oom;
if (!(reply = dbus_message_new_method_return(message))) {
strv_free(f);
goto oom;
}
strv_free(m->environment);
m->environment = f;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnitFiles")) {
DBusMessageIter iter, sub, sub2;
Hashmap *h;
Iterator i;
UnitFileList *item;
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
h = hashmap_new(string_hash_func, string_compare_func);
if (!h)
goto oom;
r = unit_file_get_list(m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, NULL, h);
if (r < 0) {
unit_file_list_free(h);
dbus_message_unref(reply);
return bus_send_error_reply(connection, message, NULL, r);
}
dbus_message_iter_init_append(reply, &iter);
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ss)", &sub)) {
unit_file_list_free(h);
goto oom;
}
HASHMAP_FOREACH(item, h, i) {
const char *state;
state = unit_file_state_to_string(item->state);
assert(state);
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &item->path) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
!dbus_message_iter_close_container(&sub, &sub2)) {
unit_file_list_free(h);
goto oom;
}
}
unit_file_list_free(h);
if (!dbus_message_iter_close_container(&iter, &sub))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitFileState")) {
const char *name;
UnitFileState state;
const char *s;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
state = unit_file_get_state(m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, NULL, name);
if (state < 0)
return bus_send_error_reply(connection, message, NULL, state);
s = unit_file_state_to_string(state);
assert(s);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
if (!dbus_message_append_args(
reply,
DBUS_TYPE_STRING, &s,
DBUS_TYPE_INVALID))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "EnableUnitFiles") ||
dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReenableUnitFiles") ||
dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LinkUnitFiles") ||
dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PresetUnitFiles") ||
dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "MaskUnitFiles")) {
char **l = NULL;
DBusMessageIter iter;
UnitFileScope scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
UnitFileChange *changes = NULL;
unsigned n_changes = 0;
dbus_bool_t runtime, force;
int carries_install_info = -1;
if (!dbus_message_iter_init(message, &iter))
goto oom;
r = bus_parse_strv_iter(&iter, &l);
if (r < 0) {
if (r == -ENOMEM)
goto oom;
return bus_send_error_reply(connection, message, NULL, r);
}
if (!dbus_message_iter_next(&iter) ||
bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &runtime, true) < 0 ||
bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &force, false) < 0) {
strv_free(l);
return bus_send_error_reply(connection, message, NULL, -EIO);
}
if (streq(member, "EnableUnitFiles")) {
r = unit_file_enable(scope, runtime, NULL, l, force, &changes, &n_changes);
carries_install_info = r;
} else if (streq(member, "ReenableUnitFiles")) {
r = unit_file_reenable(scope, runtime, NULL, l, force, &changes, &n_changes);
carries_install_info = r;
} else if (streq(member, "LinkUnitFiles"))
r = unit_file_link(scope, runtime, NULL, l, force, &changes, &n_changes);
else if (streq(member, "PresetUnitFiles")) {
r = unit_file_preset(scope, runtime, NULL, l, force, &changes, &n_changes);
carries_install_info = r;
} else if (streq(member, "MaskUnitFiles"))
r = unit_file_mask(scope, runtime, NULL, l, force, &changes, &n_changes);
else
assert_not_reached("Uh? Wrong method");
strv_free(l);
bus_manager_send_unit_files_changed(m);
if (r < 0) {
unit_file_changes_free(changes, n_changes);
return bus_send_error_reply(connection, message, NULL, r);
}
reply = message_from_file_changes(message, changes, n_changes, carries_install_info);
unit_file_changes_free(changes, n_changes);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "DisableUnitFiles") ||
dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnmaskUnitFiles")) {
char **l = NULL;
DBusMessageIter iter;
UnitFileScope scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
UnitFileChange *changes = NULL;
unsigned n_changes = 0;
dbus_bool_t runtime;
if (!dbus_message_iter_init(message, &iter))
goto oom;
r = bus_parse_strv_iter(&iter, &l);
if (r < 0) {
if (r == -ENOMEM)
goto oom;
return bus_send_error_reply(connection, message, NULL, r);
}
if (!dbus_message_iter_next(&iter) ||
bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &runtime, false) < 0) {
strv_free(l);
return bus_send_error_reply(connection, message, NULL, -EIO);
}
if (streq(member, "DisableUnitFiles"))
r = unit_file_disable(scope, runtime, NULL, l, &changes, &n_changes);
else if (streq(member, "UnmaskUnitFiles"))
r = unit_file_unmask(scope, runtime, NULL, l, &changes, &n_changes);
else
assert_not_reached("Uh? Wrong method");
strv_free(l);
bus_manager_send_unit_files_changed(m);
if (r < 0) {
unit_file_changes_free(changes, n_changes);
return bus_send_error_reply(connection, message, NULL, r);
}
reply = message_from_file_changes(message, changes, n_changes, -1);
unit_file_changes_free(changes, n_changes);
if (!reply)
goto oom;
} else {
const BusBoundProperties bps[] = {
{ "org.freedesktop.systemd1.Manager", bus_systemd_properties, systemd_property_string },
{ "org.freedesktop.systemd1.Manager", bus_manager_properties, m },
{ NULL, }
};
return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, bps);
}
if (job_type != _JOB_TYPE_INVALID) {
const char *name, *smode, *old_name = NULL;
JobMode mode;
Job *j;
JobBusClient *cl;
Unit *u;
bool b;
if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
b = dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &old_name,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_STRING, &smode,
DBUS_TYPE_INVALID);
else
b = dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_STRING, &smode,
DBUS_TYPE_INVALID);
if (!b)
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (old_name)
if (!(u = manager_get_unit(m, old_name)) ||
!u->job ||
u->job->type != JOB_START) {
dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) {
dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
return bus_send_error_reply(connection, message, &error, -EINVAL);
}
if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
return bus_send_error_reply(connection, message, &error, r);
if (reload_if_possible && unit_can_reload(u)) {
if (job_type == JOB_RESTART)
job_type = JOB_RELOAD_OR_START;
else if (job_type == JOB_TRY_RESTART)
job_type = JOB_RELOAD;
}
if ((job_type == JOB_START && u->refuse_manual_start) ||
(job_type == JOB_STOP && u->refuse_manual_stop) ||
((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) &&
(u->refuse_manual_start || u->refuse_manual_stop))) {
dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only.");
return bus_send_error_reply(connection, message, &error, -EPERM);
}
if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0)
return bus_send_error_reply(connection, message, &error, r);
cl = job_bus_client_new(connection, message_get_sender_with_fallback(message));
if (!cl)
goto oom;
LIST_PREPEND(JobBusClient, client, j->bus_client_list, cl);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
if (!(path = job_dbus_path(j)))
goto oom;
if (!dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID))
goto oom;
}
if (reply) {
if (!dbus_connection_send(connection, reply, NULL))
goto oom;
dbus_message_unref(reply);
}
free(path);
return DBUS_HANDLER_RESULT_HANDLED;
oom:
free(path);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return DBUS_HANDLER_RESULT_NEED_MEMORY;
}
const DBusObjectPathVTable bus_manager_vtable = {
.message_function = bus_manager_message_handler
};