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940367a0ab
systemd/src/core/dbus-manager.c
Evgeny Vereshchagin eed67a3041 core: expose manager's TimerSlackNSec as propery on dbus
2015-10-15 12:02:43 +00:00

2172 lines
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/*-*- 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 <http://www.gnu.org/licenses/>.
***/
#include <errno.h>
#include <sys/prctl.h>
#include <unistd.h>
#include "log.h"
#include "strv.h"
#include "build.h"
#include "install.h"
#include "selinux-access.h"
#include "watchdog.h"
#include "clock-util.h"
#include "path-util.h"
#include "virt.h"
#include "architecture.h"
#include "env-util.h"
#include "dbus.h"
#include "dbus-job.h"
#include "dbus-manager.h"
#include "dbus-unit.h"
#include "dbus-snapshot.h"
#include "dbus-execute.h"
#include "bus-common-errors.h"
#include "formats-util.h"
static int property_get_version(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
assert(bus);
assert(reply);
return sd_bus_message_append(reply, "s", PACKAGE_VERSION);
}
static int property_get_features(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
assert(bus);
assert(reply);
return sd_bus_message_append(reply, "s", SYSTEMD_FEATURES);
}
static int property_get_virtualization(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
int v;
assert(bus);
assert(reply);
v = detect_virtualization();
/* Make sure to return the empty string when we detect no virtualization, as that is the API.
*
* https://github.com/systemd/systemd/issues/1423
*/
return sd_bus_message_append(
reply, "s",
v == VIRTUALIZATION_NONE ? "" : virtualization_to_string(v));
}
static int property_get_architecture(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
assert(bus);
assert(reply);
return sd_bus_message_append(reply, "s", architecture_to_string(uname_architecture()));
}
static int property_get_tainted(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
char buf[sizeof("split-usr:cgroups-missing:local-hwclock:")] = "", *e = buf;
Manager *m = userdata;
assert(bus);
assert(reply);
assert(m);
if (m->taint_usr)
e = stpcpy(e, "split-usr:");
if (access("/proc/cgroups", F_OK) < 0)
e = stpcpy(e, "cgroups-missing:");
if (clock_is_localtime() > 0)
e = stpcpy(e, "local-hwclock:");
/* remove the last ':' */
if (e != buf)
e[-1] = 0;
return sd_bus_message_append(reply, "s", buf);
}
static int property_get_log_target(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
assert(bus);
assert(reply);
return sd_bus_message_append(reply, "s", log_target_to_string(log_get_target()));
}
static int property_set_log_target(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *value,
void *userdata,
sd_bus_error *error) {
const char *t;
int r;
assert(bus);
assert(value);
r = sd_bus_message_read(value, "s", &t);
if (r < 0)
return r;
return log_set_target_from_string(t);
}
static int property_get_log_level(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
_cleanup_free_ char *t = NULL;
int r;
assert(bus);
assert(reply);
r = log_level_to_string_alloc(log_get_max_level(), &t);
if (r < 0)
return r;
return sd_bus_message_append(reply, "s", t);
}
static int property_set_log_level(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *value,
void *userdata,
sd_bus_error *error) {
const char *t;
int r;
assert(bus);
assert(value);
r = sd_bus_message_read(value, "s", &t);
if (r < 0)
return r;
return log_set_max_level_from_string(t);
}
static int property_get_n_names(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
assert(bus);
assert(reply);
assert(m);
return sd_bus_message_append(reply, "u", (uint32_t) hashmap_size(m->units));
}
static int property_get_n_failed_units(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
assert(bus);
assert(reply);
assert(m);
return sd_bus_message_append(reply, "u", (uint32_t) set_size(m->failed_units));
}
static int property_get_n_jobs(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
assert(bus);
assert(reply);
assert(m);
return sd_bus_message_append(reply, "u", (uint32_t) hashmap_size(m->jobs));
}
static int property_get_progress(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
double d;
assert(bus);
assert(reply);
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);
return sd_bus_message_append(reply, "d", d);
}
static int property_get_system_state(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
assert(bus);
assert(reply);
assert(m);
return sd_bus_message_append(reply, "s", manager_state_to_string(manager_state(m)));
}
static int property_set_runtime_watchdog(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *value,
void *userdata,
sd_bus_error *error) {
usec_t *t = userdata;
int r;
assert(bus);
assert(value);
assert_cc(sizeof(usec_t) == sizeof(uint64_t));
r = sd_bus_message_read(value, "t", t);
if (r < 0)
return r;
return watchdog_set_timeout(t);
}
static int property_get_timer_slack_nsec(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
assert(bus);
assert(reply);
return sd_bus_message_append(reply, "t", (uint64_t) prctl(PR_GET_TIMERSLACK));
}
static int method_get_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *path = NULL;
Manager *m = userdata;
const char *name;
Unit *u;
int r;
assert(message);
assert(m);
/* Anyone can call this method */
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
if (isempty(name)) {
_cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
pid_t pid;
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_pid(creds, &pid);
if (r < 0)
return r;
u = manager_get_unit_by_pid(m, pid);
if (!u)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client not member of any unit.");
} else {
u = manager_get_unit(m, name);
if (!u)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", name);
}
r = mac_selinux_unit_access_check(u, message, "status", error);
if (r < 0)
return r;
path = unit_dbus_path(u);
if (!path)
return -ENOMEM;
return sd_bus_reply_method_return(message, "o", path);
}
static int method_get_unit_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *path = NULL;
Manager *m = userdata;
pid_t pid;
Unit *u;
int r;
assert(message);
assert(m);
assert_cc(sizeof(pid_t) == sizeof(uint32_t));
/* Anyone can call this method */
r = sd_bus_message_read(message, "u", &pid);
if (r < 0)
return r;
if (pid < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid PID " PID_FMT, pid);
if (pid == 0) {
_cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_pid(creds, &pid);
if (r < 0)
return r;
}
u = manager_get_unit_by_pid(m, pid);
if (!u)
return sd_bus_error_setf(error, BUS_ERROR_NO_UNIT_FOR_PID, "PID "PID_FMT" does not belong to any loaded unit.", pid);
r = mac_selinux_unit_access_check(u, message, "status", error);
if (r < 0)
return r;
path = unit_dbus_path(u);
if (!path)
return -ENOMEM;
return sd_bus_reply_method_return(message, "o", path);
}
static int method_load_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *path = NULL;
Manager *m = userdata;
const char *name;
Unit *u;
int r;
assert(message);
assert(m);
/* Anyone can call this method */
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
if (isempty(name)) {
_cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
pid_t pid;
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_pid(creds, &pid);
if (r < 0)
return r;
u = manager_get_unit_by_pid(m, pid);
if (!u)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client not member of any unit.");
} else {
r = manager_load_unit(m, name, NULL, error, &u);
if (r < 0)
return r;
}
r = mac_selinux_unit_access_check(u, message, "status", error);
if (r < 0)
return r;
path = unit_dbus_path(u);
if (!path)
return -ENOMEM;
return sd_bus_reply_method_return(message, "o", path);
}
static int method_start_unit_generic(sd_bus_message *message, Manager *m, JobType job_type, bool reload_if_possible, sd_bus_error *error) {
const char *name;
Unit *u;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
r = manager_load_unit(m, name, NULL, error, &u);
if (r < 0)
return r;
return bus_unit_method_start_generic(message, u, job_type, reload_if_possible, error);
}
static int method_start_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_start_unit_generic(message, userdata, JOB_START, false, error);
}
static int method_stop_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_start_unit_generic(message, userdata, JOB_STOP, false, error);
}
static int method_reload_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_start_unit_generic(message, userdata, JOB_RELOAD, false, error);
}
static int method_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_start_unit_generic(message, userdata, JOB_RESTART, false, error);
}
static int method_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, false, error);
}
static int method_reload_or_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_start_unit_generic(message, userdata, JOB_RESTART, true, error);
}
static int method_reload_or_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, true, error);
}
static int method_start_unit_replace(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
const char *old_name;
Unit *u;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &old_name);
if (r < 0)
return r;
u = manager_get_unit(m, old_name);
if (!u || !u->job || u->job->type != JOB_START)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
return method_start_unit_generic(message, m, JOB_START, false, error);
}
static int method_kill_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
const char *name;
Unit *u;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
u = manager_get_unit(m, name);
if (!u)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
return bus_unit_method_kill(message, u, error);
}
static int method_reset_failed_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
const char *name;
Unit *u;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
u = manager_get_unit(m, name);
if (!u)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
return bus_unit_method_reset_failed(message, u, error);
}
static int method_set_unit_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
const char *name;
Unit *u;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
u = manager_get_unit(m, name);
if (!u)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
return bus_unit_method_set_properties(message, u, error);
}
static int transient_unit_from_message(
Manager *m,
sd_bus_message *message,
const char *name,
Unit **unit,
sd_bus_error *error) {
Unit *u;
int r;
assert(m);
assert(message);
assert(name);
r = manager_load_unit(m, name, NULL, error, &u);
if (r < 0)
return r;
if (u->load_state != UNIT_NOT_FOUND ||
set_size(u->dependencies[UNIT_REFERENCED_BY]) > 0)
return sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS, "Unit %s already exists.", name);
/* OK, the unit failed to load and is unreferenced, now let's
* fill in the transient data instead */
r = unit_make_transient(u);
if (r < 0)
return r;
/* Set our properties */
r = bus_unit_set_properties(u, message, UNIT_RUNTIME, false, error);
if (r < 0)
return r;
*unit = u;
return 0;
}
static int transient_aux_units_from_message(
Manager *m,
sd_bus_message *message,
sd_bus_error *error) {
Unit *u;
char *name = NULL;
int r;
assert(m);
assert(message);
r = sd_bus_message_enter_container(message, 'a', "(sa(sv))");
if (r < 0)
return r;
while ((r = sd_bus_message_enter_container(message, 'r', "sa(sv)")) > 0) {
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
r = transient_unit_from_message(m, message, name, &u, error);
if (r < 0 && r != -EEXIST)
return r;
if (r != -EEXIST) {
r = unit_load(u);
if (r < 0)
return r;
}
r = sd_bus_message_exit_container(message);
if (r < 0)
return r;
}
if (r < 0)
return r;
r = sd_bus_message_exit_container(message);
if (r < 0)
return r;
return 0;
}
static int method_start_transient_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
const char *name, *smode;
Manager *m = userdata;
JobMode mode;
UnitType t;
Unit *u;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "start", error);
if (r < 0)
return r;
r = sd_bus_message_read(message, "ss", &name, &smode);
if (r < 0)
return r;
t = unit_name_to_type(name);
if (t < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit type.");
if (!unit_vtable[t]->can_transient)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit type %s does not support transient units.", unit_type_to_string(t));
mode = job_mode_from_string(smode);
if (mode < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s is invalid.", smode);
r = bus_verify_manage_units_async(m, message, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
r = transient_unit_from_message(m, message, name, &u, error);
if (r < 0)
return r;
r = transient_aux_units_from_message(m, message, error);
if (r < 0)
return r;
/* And load this stub fully */
r = unit_load(u);
if (r < 0)
return r;
manager_dispatch_load_queue(m);
/* Finally, start it */
return bus_unit_queue_job(message, u, JOB_START, mode, false, error);
}
static int method_get_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *path = NULL;
Manager *m = userdata;
uint32_t id;
Job *j;
int r;
assert(message);
assert(m);
/* Anyone can call this method */
r = sd_bus_message_read(message, "u", &id);
if (r < 0)
return r;
j = manager_get_job(m, id);
if (!j)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
r = mac_selinux_unit_access_check(j->unit, message, "status", error);
if (r < 0)
return r;
path = job_dbus_path(j);
if (!path)
return -ENOMEM;
return sd_bus_reply_method_return(message, "o", path);
}
static int method_cancel_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
uint32_t id;
Job *j;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "u", &id);
if (r < 0)
return r;
j = manager_get_job(m, id);
if (!j)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
return bus_job_method_cancel(message, j, error);
}
static int method_clear_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "reload", error);
if (r < 0)
return r;
r = bus_verify_manage_units_async(m, message, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
manager_clear_jobs(m);
return sd_bus_reply_method_return(message, NULL);
}
static int method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "reload", error);
if (r < 0)
return r;
r = bus_verify_manage_units_async(m, message, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
manager_reset_failed(m);
return sd_bus_reply_method_return(message, NULL);
}
static int list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
Manager *m = userdata;
const char *k;
Iterator i;
Unit *u;
int r;
assert(message);
assert(m);
/* Anyone can call this method */
r = mac_selinux_access_check(message, "status", error);
if (r < 0)
return r;
r = sd_bus_message_new_method_return(message, &reply);
if (r < 0)
return r;
r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
if (r < 0)
return r;
HASHMAP_FOREACH_KEY(u, k, m->units, i) {
_cleanup_free_ char *unit_path = NULL, *job_path = NULL;
Unit *following;
if (k != u->id)
continue;
following = unit_following(u);
if (!strv_isempty(states) &&
!strv_contains(states, unit_load_state_to_string(u->load_state)) &&
!strv_contains(states, unit_active_state_to_string(unit_active_state(u))) &&
!strv_contains(states, unit_sub_state_to_string(u)))
continue;
unit_path = unit_dbus_path(u);
if (!unit_path)
return -ENOMEM;
if (u->job) {
job_path = job_dbus_path(u->job);
if (!job_path)
return -ENOMEM;
}
r = sd_bus_message_append(
reply, "(ssssssouso)",
u->id,
unit_description(u),
unit_load_state_to_string(u->load_state),
unit_active_state_to_string(unit_active_state(u)),
unit_sub_state_to_string(u),
following ? following->id : "",
unit_path,
u->job ? u->job->id : 0,
u->job ? job_type_to_string(u->job->type) : "",
job_path ? job_path : "/");
if (r < 0)
return r;
}
r = sd_bus_message_close_container(reply);
if (r < 0)
return r;
return sd_bus_send(NULL, reply, NULL);
}
static int method_list_units(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return list_units_filtered(message, userdata, error, NULL);
}
static int method_list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_strv_free_ char **states = NULL;
int r;
r = sd_bus_message_read_strv(message, &states);
if (r < 0)
return r;
return list_units_filtered(message, userdata, error, states);
}
static int method_list_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
Manager *m = userdata;
Iterator i;
Job *j;
int r;
assert(message);
assert(m);
/* Anyone can call this method */
r = mac_selinux_access_check(message, "status", error);
if (r < 0)
return r;
r = sd_bus_message_new_method_return(message, &reply);
if (r < 0)
return r;
r = sd_bus_message_open_container(reply, 'a', "(usssoo)");
if (r < 0)
return r;
HASHMAP_FOREACH(j, m->jobs, i) {
_cleanup_free_ char *unit_path = NULL, *job_path = NULL;
job_path = job_dbus_path(j);
if (!job_path)
return -ENOMEM;
unit_path = unit_dbus_path(j->unit);
if (!unit_path)
return -ENOMEM;
r = sd_bus_message_append(
reply, "(usssoo)",
j->id,
j->unit->id,
job_type_to_string(j->type),
job_state_to_string(j->state),
job_path,
unit_path);
if (r < 0)
return r;
}
r = sd_bus_message_close_container(reply);
if (r < 0)
return r;
return sd_bus_send(NULL, reply, NULL);
}
static int method_subscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
int r;
assert(message);
assert(m);
/* Anyone can call this method */
r = mac_selinux_access_check(message, "status", error);
if (r < 0)
return r;
if (sd_bus_message_get_bus(message) == m->api_bus) {
/* Note that direct bus connection subscribe by
* default, we only track peers on the API bus here */
if (!m->subscribed) {
r = sd_bus_track_new(sd_bus_message_get_bus(message), &m->subscribed, NULL, NULL);
if (r < 0)
return r;
}
r = sd_bus_track_add_sender(m->subscribed, message);
if (r < 0)
return r;
if (r == 0)
return sd_bus_error_setf(error, BUS_ERROR_ALREADY_SUBSCRIBED, "Client is already subscribed.");
}
return sd_bus_reply_method_return(message, NULL);
}
static int method_unsubscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
int r;
assert(message);
assert(m);
/* Anyone can call this method */
r = mac_selinux_access_check(message, "status", error);
if (r < 0)
return r;
if (sd_bus_message_get_bus(message) == m->api_bus) {
r = sd_bus_track_remove_sender(m->subscribed, message);
if (r < 0)
return r;
if (r == 0)
return sd_bus_error_setf(error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
}
return sd_bus_reply_method_return(message, NULL);
}
static int method_dump(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *dump = NULL;
_cleanup_fclose_ FILE *f = NULL;
Manager *m = userdata;
size_t size;
int r;
assert(message);
assert(m);
/* Anyone can call this method */
r = mac_selinux_access_check(message, "status", error);
if (r < 0)
return r;
f = open_memstream(&dump, &size);
if (!f)
return -ENOMEM;
manager_dump_units(m, f, NULL);
manager_dump_jobs(m, f, NULL);
r = fflush_and_check(f);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, "s", dump);
}
static int method_create_snapshot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *path = NULL;
Manager *m = userdata;
const char *name;
int cleanup;
Snapshot *s = NULL;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "start", error);
if (r < 0)
return r;
r = sd_bus_message_read(message, "sb", &name, &cleanup);
if (r < 0)
return r;
if (isempty(name))
name = NULL;
r = bus_verify_manage_units_async(m, message, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
r = snapshot_create(m, name, cleanup, error, &s);
if (r < 0)
return r;
path = unit_dbus_path(UNIT(s));
if (!path)
return -ENOMEM;
return sd_bus_reply_method_return(message, "o", path);
}
static int method_remove_snapshot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
const char *name;
Unit *u;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
u = manager_get_unit(m, name);
if (!u)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s does not exist.", name);
if (u->type != UNIT_SNAPSHOT)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not a snapshot", name);
return bus_snapshot_method_remove(message, u, error);
}
static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "reload", error);
if (r < 0)
return r;
r = bus_verify_reload_daemon_async(m, message, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
/* 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. */
assert(!m->queued_message);
r = sd_bus_message_new_method_return(message, &m->queued_message);
if (r < 0)
return r;
m->exit_code = MANAGER_RELOAD;
return 1;
}
static int method_reexecute(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "reload", error);
if (r < 0)
return r;
r = bus_verify_reload_daemon_async(m, message, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
/* We don't send a reply back here, the client should
* just wait for us disconnecting. */
m->exit_code = MANAGER_REEXECUTE;
return 1;
}
static int method_exit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "halt", error);
if (r < 0)
return r;
/* Exit() (in contrast to SetExitCode()) is actually allowed even if
* we are running on the host. It will fall back on reboot() in
* systemd-shutdown if it cannot do the exit() because it isn't a
* container. */
m->exit_code = MANAGER_EXIT;
return sd_bus_reply_method_return(message, NULL);
}
static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "reboot", error);
if (r < 0)
return r;
if (m->running_as != MANAGER_SYSTEM)
return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
m->exit_code = MANAGER_REBOOT;
return sd_bus_reply_method_return(message, NULL);
}
static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "halt", error);
if (r < 0)
return r;
if (m->running_as != MANAGER_SYSTEM)
return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
m->exit_code = MANAGER_POWEROFF;
return sd_bus_reply_method_return(message, NULL);
}
static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "halt", error);
if (r < 0)
return r;
if (m->running_as != MANAGER_SYSTEM)
return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Halt is only supported for system managers.");
m->exit_code = MANAGER_HALT;
return sd_bus_reply_method_return(message, NULL);
}
static int method_kexec(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "reboot", error);
if (r < 0)
return r;
if (m->running_as != MANAGER_SYSTEM)
return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "KExec is only supported for system managers.");
m->exit_code = MANAGER_KEXEC;
return sd_bus_reply_method_return(message, NULL);
}
static int method_switch_root(sd_bus_message *message, void *userdata, sd_bus_error *error) {
char *ri = NULL, *rt = NULL;
const char *root, *init;
Manager *m = userdata;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "reboot", error);
if (r < 0)
return r;
if (m->running_as != MANAGER_SYSTEM)
return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Root switching is only supported by system manager.");
r = sd_bus_message_read(message, "ss", &root, &init);
if (r < 0)
return r;
if (path_equal(root, "/") || !path_is_absolute(root))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid switch root path %s", root);
/* Safety check */
if (isempty(init)) {
if (!path_is_os_tree(root))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified switch root path %s does not seem to be an OS tree. os-release file is missing.", root);
} else {
_cleanup_free_ char *p = NULL;
if (!path_is_absolute(init))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid init path %s", init);
p = strappend(root, init);
if (!p)
return -ENOMEM;
if (access(p, X_OK) < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified init binary %s does not exist.", p);
}
rt = strdup(root);
if (!rt)
return -ENOMEM;
if (!isempty(init)) {
ri = strdup(init);
if (!ri) {
free(rt);
return -ENOMEM;
}
}
free(m->switch_root);
m->switch_root = rt;
free(m->switch_root_init);
m->switch_root_init = ri;
m->exit_code = MANAGER_SWITCH_ROOT;
return sd_bus_reply_method_return(message, NULL);
}
static int method_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_strv_free_ char **plus = NULL;
Manager *m = userdata;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "reload", error);
if (r < 0)
return r;
r = sd_bus_message_read_strv(message, &plus);
if (r < 0)
return r;
if (!strv_env_is_valid(plus))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
r = bus_verify_set_environment_async(m, message, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
r = manager_environment_add(m, NULL, plus);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_unset_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_strv_free_ char **minus = NULL;
Manager *m = userdata;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "reload", error);
if (r < 0)
return r;
r = sd_bus_message_read_strv(message, &minus);
if (r < 0)
return r;
if (!strv_env_name_or_assignment_is_valid(minus))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
r = bus_verify_set_environment_async(m, message, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
r = manager_environment_add(m, minus, NULL);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_unset_and_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_strv_free_ char **minus = NULL, **plus = NULL;
Manager *m = userdata;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "reload", error);
if (r < 0)
return r;
r = sd_bus_message_read_strv(message, &minus);
if (r < 0)
return r;
r = sd_bus_message_read_strv(message, &plus);
if (r < 0)
return r;
if (!strv_env_name_or_assignment_is_valid(minus))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
if (!strv_env_is_valid(plus))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
r = bus_verify_set_environment_async(m, message, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
r = manager_environment_add(m, minus, plus);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_set_exit_code(sd_bus_message *message, void *userdata, sd_bus_error *error) {
uint8_t code;
Manager *m = userdata;
int r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "exit", error);
if (r < 0)
return r;
r = sd_bus_message_read_basic(message, 'y', &code);
if (r < 0)
return r;
if (m->running_as == MANAGER_SYSTEM && detect_container() <= 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "ExitCode can only be set for user service managers or in containers.");
m->return_value = code;
return sd_bus_reply_method_return(message, NULL);
}
static int method_list_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
Manager *m = userdata;
UnitFileList *item;
Hashmap *h;
Iterator i;
int r;
assert(message);
assert(m);
/* Anyone can call this method */
r = mac_selinux_access_check(message, "status", error);
if (r < 0)
return r;
r = sd_bus_message_new_method_return(message, &reply);
if (r < 0)
return r;
h = hashmap_new(&string_hash_ops);
if (!h)
return -ENOMEM;
r = unit_file_get_list(m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, NULL, h);
if (r < 0)
goto fail;
r = sd_bus_message_open_container(reply, 'a', "(ss)");
if (r < 0)
goto fail;
HASHMAP_FOREACH(item, h, i) {
r = sd_bus_message_append(reply, "(ss)", item->path, unit_file_state_to_string(item->state));
if (r < 0)
goto fail;
}
unit_file_list_free(h);
r = sd_bus_message_close_container(reply);
if (r < 0)
return r;
return sd_bus_send(NULL, reply, NULL);
fail:
unit_file_list_free(h);
return r;
}
static int method_get_unit_file_state(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
const char *name;
UnitFileState state;
UnitFileScope scope;
int r;
assert(message);
assert(m);
/* Anyone can call this method */
r = mac_selinux_access_check(message, "status", error);
if (r < 0)
return r;
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
state = unit_file_get_state(scope, NULL, name);
if (state < 0)
return state;
return sd_bus_reply_method_return(message, "s", unit_file_state_to_string(state));
}
static int method_get_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *default_target = NULL;
Manager *m = userdata;
UnitFileScope scope;
int r;
assert(message);
assert(m);
/* Anyone can call this method */
r = mac_selinux_access_check(message, "status", error);
if (r < 0)
return r;
scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
r = unit_file_get_default(scope, NULL, &default_target);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, "s", default_target);
}
static int send_unit_files_changed(sd_bus *bus, void *userdata) {
_cleanup_bus_message_unref_ sd_bus_message *message = NULL;
int r;
assert(bus);
r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitFilesChanged");
if (r < 0)
return r;
return sd_bus_send(bus, message, NULL);
}
static int reply_unit_file_changes_and_free(
Manager *m,
sd_bus_message *message,
int carries_install_info,
UnitFileChange *changes,
unsigned n_changes) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
unsigned i;
int r;
if (n_changes > 0) {
r = bus_foreach_bus(m, NULL, send_unit_files_changed, NULL);
if (r < 0)
log_debug_errno(r, "Failed to send UnitFilesChanged signal: %m");
}
r = sd_bus_message_new_method_return(message, &reply);
if (r < 0)
goto fail;
if (carries_install_info >= 0) {
r = sd_bus_message_append(reply, "b", carries_install_info);
if (r < 0)
goto fail;
}
r = sd_bus_message_open_container(reply, 'a', "(sss)");
if (r < 0)
goto fail;
for (i = 0; i < n_changes; i++) {
r = sd_bus_message_append(
reply, "(sss)",
unit_file_change_type_to_string(changes[i].type),
changes[i].path,
changes[i].source);
if (r < 0)
goto fail;
}
r = sd_bus_message_close_container(reply);
if (r < 0)
goto fail;
return sd_bus_send(NULL, reply, NULL);
fail:
unit_file_changes_free(changes, n_changes);
return r;
}
static int method_enable_unit_files_generic(
sd_bus_message *message,
Manager *m,
const char *verb,
int (*call)(UnitFileScope scope, bool runtime, const char *root_dir, char *files[], bool force, UnitFileChange **changes, unsigned *n_changes),
bool carries_install_info,
sd_bus_error *error) {
_cleanup_strv_free_ char **l = NULL;
UnitFileChange *changes = NULL;
unsigned n_changes = 0;
UnitFileScope scope;
int runtime, force, r;
assert(message);
assert(m);
r = sd_bus_message_read_strv(message, &l);
if (r < 0)
return r;
r = sd_bus_message_read(message, "bb", &runtime, &force);
if (r < 0)
return r;
r = bus_verify_manage_unit_files_async(m, message, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
r = call(scope, runtime, NULL, l, force, &changes, &n_changes);
if (r < 0)
return r;
return reply_unit_file_changes_and_free(m, message, carries_install_info ? r : -1, changes, n_changes);
}
static int method_enable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_enable_unit_files_generic(message, userdata, "enable", unit_file_enable, true, error);
}
static int method_reenable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_enable_unit_files_generic(message, userdata, "enable", unit_file_reenable, true, error);
}
static int method_link_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_enable_unit_files_generic(message, userdata, "enable", unit_file_link, false, error);
}
static int unit_file_preset_without_mode(UnitFileScope scope, bool runtime, const char *root_dir, char **files, bool force, UnitFileChange **changes, unsigned *n_changes) {
return unit_file_preset(scope, runtime, root_dir, files, UNIT_FILE_PRESET_FULL, force, changes, n_changes);
}
static int method_preset_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_enable_unit_files_generic(message, userdata, "enable", unit_file_preset_without_mode, true, error);
}
static int method_mask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_enable_unit_files_generic(message, userdata, "disable", unit_file_mask, false, error);
}
static int method_preset_unit_files_with_mode(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_strv_free_ char **l = NULL;
UnitFileChange *changes = NULL;
unsigned n_changes = 0;
Manager *m = userdata;
UnitFilePresetMode mm;
UnitFileScope scope;
int runtime, force, r;
const char *mode;
assert(message);
assert(m);
r = sd_bus_message_read_strv(message, &l);
if (r < 0)
return r;
r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
if (r < 0)
return r;
if (isempty(mode))
mm = UNIT_FILE_PRESET_FULL;
else {
mm = unit_file_preset_mode_from_string(mode);
if (mm < 0)
return -EINVAL;
}
r = bus_verify_manage_unit_files_async(m, message, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
r = unit_file_preset(scope, runtime, NULL, l, mm, force, &changes, &n_changes);
if (r < 0)
return r;
return reply_unit_file_changes_and_free(m, message, r, changes, n_changes);
}
static int method_disable_unit_files_generic(
sd_bus_message *message,
Manager *m, const
char *verb,
int (*call)(UnitFileScope scope, bool runtime, const char *root_dir, char *files[], UnitFileChange **changes, unsigned *n_changes),
sd_bus_error *error) {
_cleanup_strv_free_ char **l = NULL;
UnitFileChange *changes = NULL;
unsigned n_changes = 0;
UnitFileScope scope;
int r, runtime;
assert(message);
assert(m);
r = sd_bus_message_read_strv(message, &l);
if (r < 0)
return r;
r = sd_bus_message_read(message, "b", &runtime);
if (r < 0)
return r;
scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
r = bus_verify_manage_unit_files_async(m, message, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
r = call(scope, runtime, NULL, l, &changes, &n_changes);
if (r < 0)
return r;
return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes);
}
static int method_disable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_disable_unit_files_generic(message, userdata, "disable", unit_file_disable, error);
}
static int method_unmask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_disable_unit_files_generic(message, userdata, "enable", unit_file_unmask, error);
}
static int method_set_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
UnitFileChange *changes = NULL;
unsigned n_changes = 0;
Manager *m = userdata;
UnitFileScope scope;
const char *name;
int force, r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "enable", error);
if (r < 0)
return r;
r = sd_bus_message_read(message, "sb", &name, &force);
if (r < 0)
return r;
r = bus_verify_manage_unit_files_async(m, message, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
r = unit_file_set_default(scope, NULL, name, force, &changes, &n_changes);
if (r < 0)
return r;
return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes);
}
static int method_preset_all_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
UnitFileChange *changes = NULL;
unsigned n_changes = 0;
Manager *m = userdata;
UnitFilePresetMode mm;
UnitFileScope scope;
const char *mode;
int force, runtime, r;
assert(message);
assert(m);
r = mac_selinux_access_check(message, "enable", error);
if (r < 0)
return r;
r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
if (r < 0)
return r;
if (isempty(mode))
mm = UNIT_FILE_PRESET_FULL;
else {
mm = unit_file_preset_mode_from_string(mode);
if (mm < 0)
return -EINVAL;
}
r = bus_verify_manage_unit_files_async(m, message, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
r = unit_file_preset_all(scope, runtime, NULL, mm, force, &changes, &n_changes);
if (r < 0)
return r;
return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes);
}
static int method_add_dependency_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_strv_free_ char **l = NULL;
Manager *m = userdata;
UnitFileChange *changes = NULL;
unsigned n_changes = 0;
UnitFileScope scope;
int runtime, force, r;
char *target;
char *type;
UnitDependency dep;
assert(message);
assert(m);
r = bus_verify_manage_unit_files_async(m, message, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
r = sd_bus_message_read_strv(message, &l);
if (r < 0)
return r;
r = sd_bus_message_read(message, "ssbb", &target, &type, &runtime, &force);
if (r < 0)
return r;
dep = unit_dependency_from_string(type);
if (dep < 0)
return -EINVAL;
scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
r = unit_file_add_dependency(scope, runtime, NULL, l, target, dep, force, &changes, &n_changes);
if (r < 0)
return r;
return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes);
}
const sd_bus_vtable bus_manager_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_PROPERTY("Version", "s", property_get_version, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Features", "s", property_get_features, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Virtualization", "s", property_get_virtualization, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Architecture", "s", property_get_architecture, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Tainted", "s", property_get_tainted, 0, SD_BUS_VTABLE_PROPERTY_CONST),
BUS_PROPERTY_DUAL_TIMESTAMP("FirmwareTimestamp", offsetof(Manager, firmware_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
BUS_PROPERTY_DUAL_TIMESTAMP("LoaderTimestamp", offsetof(Manager, loader_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
BUS_PROPERTY_DUAL_TIMESTAMP("KernelTimestamp", offsetof(Manager, kernel_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
BUS_PROPERTY_DUAL_TIMESTAMP("InitRDTimestamp", offsetof(Manager, initrd_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
BUS_PROPERTY_DUAL_TIMESTAMP("UserspaceTimestamp", offsetof(Manager, userspace_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
BUS_PROPERTY_DUAL_TIMESTAMP("FinishTimestamp", offsetof(Manager, finish_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
BUS_PROPERTY_DUAL_TIMESTAMP("SecurityStartTimestamp", offsetof(Manager, security_start_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
BUS_PROPERTY_DUAL_TIMESTAMP("SecurityFinishTimestamp", offsetof(Manager, security_finish_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsStartTimestamp", offsetof(Manager, generators_start_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsFinishTimestamp", offsetof(Manager, generators_finish_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadStartTimestamp", offsetof(Manager, units_load_start_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadFinishTimestamp", offsetof(Manager, units_load_finish_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_WRITABLE_PROPERTY("LogLevel", "s", property_get_log_level, property_set_log_level, 0, 0),
SD_BUS_WRITABLE_PROPERTY("LogTarget", "s", property_get_log_target, property_set_log_target, 0, 0),
SD_BUS_PROPERTY("NNames", "u", property_get_n_names, 0, 0),
SD_BUS_PROPERTY("NFailedUnits", "u", property_get_n_failed_units, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("NJobs", "u", property_get_n_jobs, 0, 0),
SD_BUS_PROPERTY("NInstalledJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_installed_jobs), 0),
SD_BUS_PROPERTY("NFailedJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_failed_jobs), 0),
SD_BUS_PROPERTY("Progress", "d", property_get_progress, 0, 0),
SD_BUS_PROPERTY("Environment", "as", NULL, offsetof(Manager, environment), 0),
SD_BUS_PROPERTY("ConfirmSpawn", "b", bus_property_get_bool, offsetof(Manager, confirm_spawn), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("ShowStatus", "b", bus_property_get_bool, offsetof(Manager, show_status), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("UnitPath", "as", NULL, offsetof(Manager, lookup_paths.unit_path), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultStandardOutput", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultStandardError", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_WRITABLE_PROPERTY("RuntimeWatchdogUSec", "t", bus_property_get_usec, property_set_runtime_watchdog, offsetof(Manager, runtime_watchdog), 0),
SD_BUS_WRITABLE_PROPERTY("ShutdownWatchdogUSec", "t", bus_property_get_usec, bus_property_set_usec, offsetof(Manager, shutdown_watchdog), 0),
SD_BUS_PROPERTY("ControlGroup", "s", NULL, offsetof(Manager, cgroup_root), 0),
SD_BUS_PROPERTY("SystemState", "s", property_get_system_state, 0, 0),
SD_BUS_PROPERTY("ExitCode", "y", bus_property_get_unsigned, offsetof(Manager, return_value), 0),
SD_BUS_PROPERTY("DefaultTimerAccuracyUSec", "t", bus_property_get_usec, offsetof(Manager, default_timer_accuracy_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultTimeoutStartUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_start_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultTimeoutStopUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_stop_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultRestartUSec", "t", bus_property_get_usec, offsetof(Manager, default_restart_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultStartLimitInterval", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultStartLimitBurst", "u", bus_property_get_unsigned, offsetof(Manager, default_start_limit_burst), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultCPUAccounting", "b", bus_property_get_bool, offsetof(Manager, default_cpu_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultBlockIOAccounting", "b", bus_property_get_bool, offsetof(Manager, default_blockio_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultMemoryAccounting", "b", bus_property_get_bool, offsetof(Manager, default_memory_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultTasksAccounting", "b", bus_property_get_bool, offsetof(Manager, default_tasks_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitCPU", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitFSIZE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitDATA", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitSTACK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitCORE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitRSS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitNOFILE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitAS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitNPROC", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitMEMLOCK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitLOCKS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitSIGPENDING", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitMSGQUEUE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitNICE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitRTPRIO", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DefaultLimitRTTIME", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("TimerSlackNSec", "t", property_get_timer_slack_nsec, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_METHOD("GetUnit", "s", "o", method_get_unit, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("GetUnitByPID", "u", "o", method_get_unit_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("LoadUnit", "s", "o", method_load_unit, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("StartUnit", "ss", "o", method_start_unit, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("StartUnitReplace", "sss", "o", method_start_unit_replace, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("StopUnit", "ss", "o", method_stop_unit, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ReloadUnit", "ss", "o", method_reload_unit, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("RestartUnit", "ss", "o", method_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("TryRestartUnit", "ss", "o", method_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ReloadOrRestartUnit", "ss", "o", method_reload_or_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ReloadOrTryRestartUnit", "ss", "o", method_reload_or_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("KillUnit", "ssi", NULL, method_kill_unit, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ResetFailedUnit", "s", NULL, method_reset_failed_unit, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("SetUnitProperties", "sba(sv)", NULL, method_set_unit_properties, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("StartTransientUnit", "ssa(sv)a(sa(sv))", "o", method_start_transient_unit, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("GetJob", "u", "o", method_get_job, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("CancelJob", "u", NULL, method_cancel_job, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ClearJobs", NULL, NULL, method_clear_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ResetFailed", NULL, NULL, method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListUnits", NULL, "a(ssssssouso)", method_list_units, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListUnitsFiltered", "as", "a(ssssssouso)", method_list_units_filtered, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListJobs", NULL, "a(usssoo)", method_list_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Subscribe", NULL, NULL, method_subscribe, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Unsubscribe", NULL, NULL, method_unsubscribe, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Dump", NULL, "s", method_dump, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("CreateSnapshot", "sb", "o", method_create_snapshot, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("RemoveSnapshot", "s", NULL, method_remove_snapshot, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Reload", NULL, NULL, method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Reexecute", NULL, NULL, method_reexecute, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Exit", NULL, NULL, method_exit, 0),
SD_BUS_METHOD("Reboot", NULL, NULL, method_reboot, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
SD_BUS_METHOD("PowerOff", NULL, NULL, method_poweroff, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
SD_BUS_METHOD("Halt", NULL, NULL, method_halt, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
SD_BUS_METHOD("KExec", NULL, NULL, method_kexec, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
SD_BUS_METHOD("SwitchRoot", "ss", NULL, method_switch_root, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
SD_BUS_METHOD("SetEnvironment", "as", NULL, method_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("UnsetEnvironment", "as", NULL, method_unset_environment, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("UnsetAndSetEnvironment", "asas", NULL, method_unset_and_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListUnitFiles", NULL, "a(ss)", method_list_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("GetUnitFileState", "s", "s", method_get_unit_file_state, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("EnableUnitFiles", "asbb", "ba(sss)", method_enable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("DisableUnitFiles", "asb", "a(sss)", method_disable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ReenableUnitFiles", "asbb", "ba(sss)", method_reenable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("LinkUnitFiles", "asbb", "a(sss)", method_link_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("PresetUnitFiles", "asbb", "ba(sss)", method_preset_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("PresetUnitFilesWithMode", "assbb", "ba(sss)", method_preset_unit_files_with_mode, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("MaskUnitFiles", "asbb", "a(sss)", method_mask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("UnmaskUnitFiles", "asb", "a(sss)", method_unmask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("SetDefaultTarget", "sb", "a(sss)", method_set_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("GetDefaultTarget", NULL, "s", method_get_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("PresetAllUnitFiles", "sbb", "a(sss)", method_preset_all_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("AddDependencyUnitFiles", "asssbb", "a(sss)", method_add_dependency_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("SetExitCode", "y", NULL, method_set_exit_code, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_SIGNAL("UnitNew", "so", 0),
SD_BUS_SIGNAL("UnitRemoved", "so", 0),
SD_BUS_SIGNAL("JobNew", "uos", 0),
SD_BUS_SIGNAL("JobRemoved", "uoss", 0),
SD_BUS_SIGNAL("StartupFinished", "tttttt", 0),
SD_BUS_SIGNAL("UnitFilesChanged", NULL, 0),
SD_BUS_SIGNAL("Reloading", "b", 0),
SD_BUS_VTABLE_END
};
static int send_finished(sd_bus *bus, void *userdata) {
_cleanup_bus_message_unref_ sd_bus_message *message = NULL;
usec_t *times = userdata;
int r;
assert(bus);
assert(times);
r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartupFinished");
if (r < 0)
return r;
r = sd_bus_message_append(message, "tttttt", times[0], times[1], times[2], times[3], times[4], times[5]);
if (r < 0)
return r;
return sd_bus_send(bus, message, NULL);
}
void bus_manager_send_finished(
Manager *m,
usec_t firmware_usec,
usec_t loader_usec,
usec_t kernel_usec,
usec_t initrd_usec,
usec_t userspace_usec,
usec_t total_usec) {
int r;
assert(m);
r = bus_foreach_bus(
m,
NULL,
send_finished,
(usec_t[6]) {
firmware_usec,
loader_usec,
kernel_usec,
initrd_usec,
userspace_usec,
total_usec
});
if (r < 0)
log_debug_errno(r, "Failed to send finished signal: %m");
}
static int send_reloading(sd_bus *bus, void *userdata) {
_cleanup_bus_message_unref_ sd_bus_message *message = NULL;
int r;
assert(bus);
r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "Reloading");
if (r < 0)
return r;
r = sd_bus_message_append(message, "b", PTR_TO_INT(userdata));
if (r < 0)
return r;
return sd_bus_send(bus, message, NULL);
}
void bus_manager_send_reloading(Manager *m, bool active) {
int r;
assert(m);
r = bus_foreach_bus(m, NULL, send_reloading, INT_TO_PTR(active));
if (r < 0)
log_debug_errno(r, "Failed to send reloading signal: %m");
}
static int send_changed_signal(sd_bus *bus, void *userdata) {
assert(bus);
return sd_bus_emit_properties_changed_strv(bus,
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
NULL);
}
void bus_manager_send_change_signal(Manager *m) {
int r;
assert(m);
r = bus_foreach_bus(m, NULL, send_changed_signal, NULL);
if (r < 0)
log_debug_errno(r, "Failed to send manager change signal: %m");
}
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