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Systemd/src/core/dbus-manager.c
Franck Bui e9fd88f2e9 core: allow 'SetUnitProperties()' to run on inactive units too 
'set-property' has been primarly designed to change some properties of
*active* units.

However it can easily work on inactive units as well. In that case
changes are only saved in a drop-in for futur uses and changes will be
effective when unit will be started.

Actually it already works on inactive units but that was not
documented and not fully supported. Indeed the inactive units had to
be known by the manager otherwise it was reported as not loaded:

 $ systemctl status my-test.service
 * my-test.service - My Testing Unit
    Loaded: loaded (/etc/systemd/system/my-test.service; static; vendor preset: disabled)
   Drop-In: /etc/systemd/system/my-test.service.d
    Active: inactive (dead)

 $ systemctl set-property my-test.service MemoryLimit=1000000
 Failed to set unit properties on my-test.service: Unit my-test.service is not loaded.

[ Note: that the unit load state reported by the 'status' command
  might be confusing since it claimed the unit as loaded but
  'set-property' reported the contrary. ]

One can possibily workaround this by making the unit a dependency of
another active unit so the manager will keep it around:

 $ systemctl add-wants multi-user.target my-test.service
 Created symlink from /etc/systemd/system/multi-user.target.wants/my-test.service to /etc/systemd/system/my-test.service.

 $ systemctl set-property my-test.service MemoryLimit=1000000

 $ systemctl status my-test.service
 * my-test.service - My Testing Unit
    Loaded: loaded (/etc/systemd/system/my-test.service; enabled; vendor preset: disabled)
   Drop-In: /etc/systemd/system/my-test.service.d
            `-50-MemoryLimit.conf
    Active: inactive (dead)

This patch simply forces 'SetUnitProperties()' to load the unit if
it's not already the case.

It also documents the fact that 'set-property' can be used on inactive
units.
2015-11-22 15:06:14 +01:00

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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 "alloc-util.h"
#include "architecture.h"
#include "build.h"
#include "bus-common-errors.h"
#include "clock-util.h"
#include "dbus-execute.h"
#include "dbus-job.h"
#include "dbus-manager.h"
#include "dbus-unit.h"
#include "dbus.h"
#include "env-util.h"
#include "fd-util.h"
#include "fileio.h"
#include "formats-util.h"
#include "install.h"
#include "log.h"
#include "path-util.h"
#include "selinux-access.h"
#include "stat-util.h"
#include "string-util.h"
#include "strv.h"
#include "syslog-util.h"
#include "virt.h"
#include "watchdog.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;
r = manager_load_unit(m, name, NULL, error, &u);
if (r < 0)
return r;
r = bus_unit_check_load_state(u, error);
if (r < 0)
return r;
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_refuse_snapshot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Support for snapshots has been removed.");
}
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;
r = unit_file_get_state(scope, NULL, name, &state);
if (r < 0)
return r;
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 == -ESHUTDOWN)
return sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED, "Unit file is masked");
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 == -ESHUTDOWN)
return sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED, "Unit file is masked");
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_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("RemoveSnapshot", "s", NULL, method_refuse_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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