/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2011 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see .
***/
#include
#include
#include
#include
#include "sd-id128.h"
#include "sd-messages.h"
#include "strv.h"
#include "mkdir.h"
#include "path-util.h"
#include "special.h"
#include "fileio-label.h"
#include "label.h"
#include "utf8.h"
#include "unit-name.h"
#include "bus-util.h"
#include "bus-common-errors.h"
#include "time-util.h"
#include "cgroup-util.h"
#include "machine-image.h"
#include "image-dbus.h"
#include "machined.h"
#include "machine-dbus.h"
static int method_get_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *p = NULL;
Manager *m = userdata;
Machine *machine;
const char *name;
int r;
assert(bus);
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
machine = hashmap_get(m->machines, name);
if (!machine)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
p = machine_bus_path(machine);
if (!p)
return -ENOMEM;
return sd_bus_reply_method_return(message, "o", p);
}
static int method_get_image(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *p = NULL;
Manager *m = userdata;
const char *name;
int r;
assert(bus);
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
r = image_find(name, NULL);
if (r == 0)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
if (r < 0)
return r;
p = image_bus_path(name);
if (!p)
return -ENOMEM;
return sd_bus_reply_method_return(message, "o", p);
}
static int method_get_machine_by_pid(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *p = NULL;
Manager *m = userdata;
Machine *machine = NULL;
pid_t pid;
int r;
assert(bus);
assert(message);
assert(m);
assert_cc(sizeof(pid_t) == sizeof(uint32_t));
r = sd_bus_message_read(message, "u", &pid);
if (r < 0)
return r;
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;
}
r = manager_get_machine_by_pid(m, pid, &machine);
if (r < 0)
return r;
if (!machine)
return sd_bus_error_setf(error, BUS_ERROR_NO_MACHINE_FOR_PID, "PID "PID_FMT" does not belong to any known machine", pid);
p = machine_bus_path(machine);
if (!p)
return -ENOMEM;
return sd_bus_reply_method_return(message, "o", p);
}
static int method_list_machines(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
Manager *m = userdata;
Machine *machine;
Iterator i;
int r;
assert(bus);
assert(message);
assert(m);
r = sd_bus_message_new_method_return(message, &reply);
if (r < 0)
return sd_bus_error_set_errno(error, r);
r = sd_bus_message_open_container(reply, 'a', "(ssso)");
if (r < 0)
return sd_bus_error_set_errno(error, r);
HASHMAP_FOREACH(machine, m->machines, i) {
_cleanup_free_ char *p = NULL;
p = machine_bus_path(machine);
if (!p)
return -ENOMEM;
r = sd_bus_message_append(reply, "(ssso)",
machine->name,
strempty(machine_class_to_string(machine->class)),
machine->service,
p);
if (r < 0)
return sd_bus_error_set_errno(error, r);
}
r = sd_bus_message_close_container(reply);
if (r < 0)
return sd_bus_error_set_errno(error, r);
return sd_bus_send(bus, reply, NULL);
}
static int method_create_or_register_machine(Manager *manager, sd_bus_message *message, bool read_network, Machine **_m, sd_bus_error *error) {
const char *name, *service, *class, *root_directory;
const int32_t *netif = NULL;
MachineClass c;
uint32_t leader;
sd_id128_t id;
const void *v;
Machine *m;
size_t n, n_netif = 0;
int r;
assert(manager);
assert(message);
assert(_m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
if (!machine_name_is_valid(name))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid machine name");
r = sd_bus_message_read_array(message, 'y', &v, &n);
if (r < 0)
return r;
if (n == 0)
id = SD_ID128_NULL;
else if (n == 16)
memcpy(&id, v, n);
else
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid machine ID parameter");
r = sd_bus_message_read(message, "ssus", &service, &class, &leader, &root_directory);
if (r < 0)
return r;
if (read_network) {
size_t i;
r = sd_bus_message_read_array(message, 'i', (const void**) &netif, &n_netif);
if (r < 0)
return r;
n_netif /= sizeof(int32_t);
for (i = 0; i < n_netif; i++) {
if (netif[i] <= 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid network interface index %i", netif[i]);
}
}
if (isempty(class))
c = _MACHINE_CLASS_INVALID;
else {
c = machine_class_from_string(class);
if (c < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid machine class parameter");
}
if (leader == 1)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
if (!isempty(root_directory) && !path_is_absolute(root_directory))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Root directory must be empty or an absolute path");
if (leader == 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;
assert_cc(sizeof(uint32_t) == sizeof(pid_t));
r = sd_bus_creds_get_pid(creds, (pid_t*) &leader);
if (r < 0)
return r;
}
if (hashmap_get(manager->machines, name))
return sd_bus_error_setf(error, BUS_ERROR_MACHINE_EXISTS, "Machine '%s' already exists", name);
r = manager_add_machine(manager, name, &m);
if (r < 0)
return r;
m->leader = leader;
m->class = c;
m->id = id;
if (!isempty(service)) {
m->service = strdup(service);
if (!m->service) {
r = -ENOMEM;
goto fail;
}
}
if (!isempty(root_directory)) {
m->root_directory = strdup(root_directory);
if (!m->root_directory) {
r = -ENOMEM;
goto fail;
}
}
if (n_netif > 0) {
assert_cc(sizeof(int32_t) == sizeof(int));
m->netif = memdup(netif, sizeof(int32_t) * n_netif);
if (!m->netif) {
r = -ENOMEM;
goto fail;
}
m->n_netif = n_netif;
}
*_m = m;
return 1;
fail:
machine_add_to_gc_queue(m);
return r;
}
static int method_create_machine_internal(sd_bus *bus, sd_bus_message *message, bool read_network, void *userdata, sd_bus_error *error) {
Manager *manager = userdata;
Machine *m = NULL;
int r;
r = method_create_or_register_machine(manager, message, read_network, &m, error);
if (r < 0)
return r;
r = sd_bus_message_enter_container(message, 'a', "(sv)");
if (r < 0)
goto fail;
r = machine_start(m, message, error);
if (r < 0)
goto fail;
m->create_message = sd_bus_message_ref(message);
return 1;
fail:
machine_add_to_gc_queue(m);
return r;
}
static int method_create_machine_with_network(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_create_machine_internal(bus, message, true, userdata, error);
}
static int method_create_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_create_machine_internal(bus, message, false, userdata, error);
}
static int method_register_machine_internal(sd_bus *bus, sd_bus_message *message, bool read_network, void *userdata, sd_bus_error *error) {
Manager *manager = userdata;
_cleanup_free_ char *p = NULL;
Machine *m = NULL;
int r;
r = method_create_or_register_machine(manager, message, read_network, &m, error);
if (r < 0)
return r;
r = cg_pid_get_unit(m->leader, &m->unit);
if (r < 0) {
r = sd_bus_error_set_errnof(error, r, "Failed to determine unit of process "PID_FMT" : %s", m->leader, strerror(-r));
goto fail;
}
r = machine_start(m, NULL, error);
if (r < 0)
goto fail;
p = machine_bus_path(m);
if (!p) {
r = -ENOMEM;
goto fail;
}
return sd_bus_reply_method_return(message, "o", p);
fail:
machine_add_to_gc_queue(m);
return r;
}
static int method_register_machine_with_network(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_register_machine_internal(bus, message, true, userdata, error);
}
static int method_register_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_register_machine_internal(bus, message, false, userdata, error);
}
static int method_terminate_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
Machine *machine;
const char *name;
int r;
assert(bus);
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return sd_bus_error_set_errno(error, r);
machine = hashmap_get(m->machines, name);
if (!machine)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
return bus_machine_method_terminate(bus, message, machine, error);
}
static int method_kill_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
Machine *machine;
const char *name;
int r;
assert(bus);
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return sd_bus_error_set_errno(error, r);
machine = hashmap_get(m->machines, name);
if (!machine)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
return bus_machine_method_kill(bus, message, machine, error);
}
static int method_get_machine_addresses(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
Machine *machine;
const char *name;
int r;
assert(bus);
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return sd_bus_error_set_errno(error, r);
machine = hashmap_get(m->machines, name);
if (!machine)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
return bus_machine_method_get_addresses(bus, message, machine, error);
}
static int method_get_machine_os_release(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
Machine *machine;
const char *name;
int r;
assert(bus);
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return sd_bus_error_set_errno(error, r);
machine = hashmap_get(m->machines, name);
if (!machine)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
return bus_machine_method_get_os_release(bus, message, machine, error);
}
static int method_list_images(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_(image_hashmap_freep) Hashmap *images = NULL;
Manager *m = userdata;
Image *image;
Iterator i;
int r;
assert(bus);
assert(message);
assert(m);
images = hashmap_new(&string_hash_ops);
if (!images)
return -ENOMEM;
r = image_discover(images);
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', "(ssbttto)");
if (r < 0)
return r;
HASHMAP_FOREACH(image, images, i) {
_cleanup_free_ char *p = NULL;
p = image_bus_path(image->name);
if (!p)
return -ENOMEM;
r = sd_bus_message_append(reply, "(ssbttto)",
image->name,
image_type_to_string(image->type),
image->read_only,
image->crtime,
image->mtime,
image->usage,
p);
if (r < 0)
return r;
}
r = sd_bus_message_close_container(reply);
if (r < 0)
return r;
return sd_bus_send(bus, reply, NULL);
}
static int method_open_machine_pty(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
Machine *machine;
const char *name;
int r;
assert(bus);
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return sd_bus_error_set_errno(error, r);
machine = hashmap_get(m->machines, name);
if (!machine)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
return bus_machine_method_open_pty(bus, message, machine, error);
}
static int method_open_machine_login(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
Machine *machine;
const char *name;
int r;
assert(bus);
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
machine = hashmap_get(m->machines, name);
if (!machine)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
return bus_machine_method_open_login(bus, message, machine, error);
}
static int method_bind_mount_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
Machine *machine;
const char *name;
int r;
assert(bus);
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
machine = hashmap_get(m->machines, name);
if (!machine)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
return bus_machine_method_bind_mount(bus, message, machine, error);
}
static int method_copy_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
Machine *machine;
const char *name;
int r;
assert(bus);
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
machine = hashmap_get(m->machines, name);
if (!machine)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
return bus_machine_method_copy(bus, message, machine, error);
}
static int method_remove_image(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(image_unrefp) Image* i = NULL;
const char *name;
int r;
assert(bus);
assert(message);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
if (!image_name_is_valid(name))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", name);
r = image_find(name, &i);
if (r < 0)
return r;
if (r == 0)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
i->userdata = userdata;
return bus_image_method_remove(bus, message, i, error);
}
static int method_rename_image(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(image_unrefp) Image* i = NULL;
const char *old_name;
int r;
assert(bus);
assert(message);
r = sd_bus_message_read(message, "s", &old_name);
if (r < 0)
return r;
if (!image_name_is_valid(old_name))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", old_name);
r = image_find(old_name, &i);
if (r < 0)
return r;
if (r == 0)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", old_name);
i->userdata = userdata;
return bus_image_method_rename(bus, message, i, error);
}
static int method_clone_image(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(image_unrefp) Image *i = NULL;
const char *old_name;
int r;
assert(bus);
r = sd_bus_message_read(message, "s", &old_name);
if (r < 0)
return r;
if (!image_name_is_valid(old_name))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", old_name);
r = image_find(old_name, &i);
if (r < 0)
return r;
if (r == 0)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", old_name);
i->userdata = userdata;
return bus_image_method_clone(bus, message, i, error);
}
static int method_mark_image_read_only(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(image_unrefp) Image *i = NULL;
const char *name;
int r;
assert(bus);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
if (!image_name_is_valid(name))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", name);
r = image_find(name, &i);
if (r < 0)
return r;
if (r == 0)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
i->userdata = userdata;
return bus_image_method_mark_read_only(bus, message, i, error);
}
const sd_bus_vtable manager_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_METHOD("GetMachine", "s", "o", method_get_machine, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("GetImage", "s", "o", method_get_image, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("GetMachineByPID", "u", "o", method_get_machine_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListMachines", NULL, "a(ssso)", method_list_machines, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListImages", NULL, "a(ssbttto)", method_list_images, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("CreateMachine", "sayssusa(sv)", "o", method_create_machine, 0),
SD_BUS_METHOD("CreateMachineWithNetwork", "sayssusaia(sv)", "o", method_create_machine_with_network, 0),
SD_BUS_METHOD("RegisterMachine", "sayssus", "o", method_register_machine, 0),
SD_BUS_METHOD("RegisterMachineWithNetwork", "sayssusai", "o", method_register_machine_with_network, 0),
SD_BUS_METHOD("TerminateMachine", "s", NULL, method_terminate_machine, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("KillMachine", "ssi", NULL, method_kill_machine, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("GetMachineAddresses", "s", "a(iay)", method_get_machine_addresses, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("GetMachineOSRelease", "s", "a{ss}", method_get_machine_os_release, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("OpenMachinePTY", "s", "hs", method_open_machine_pty, 0),
SD_BUS_METHOD("OpenMachineLogin", "s", "hs", method_open_machine_login, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("BindMountMachine", "sssbb", NULL, method_bind_mount_machine, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("CopyFromMachine", "sss", NULL, method_copy_machine, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("CopyToMachine", "sss", NULL, method_copy_machine, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("RemoveImage", "s", NULL, method_remove_image, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("RenameImage", "ss", NULL, method_rename_image, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("CloneImage", "ssb", NULL, method_clone_image, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("MarkImageReadOnly", "sb", NULL, method_mark_image_read_only, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_SIGNAL("MachineNew", "so", 0),
SD_BUS_SIGNAL("MachineRemoved", "so", 0),
SD_BUS_VTABLE_END
};
int match_job_removed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
const char *path, *result, *unit;
Manager *m = userdata;
Machine *machine;
uint32_t id;
int r;
assert(bus);
assert(message);
assert(m);
r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
if (r < 0) {
bus_log_parse_error(r);
return r;
}
machine = hashmap_get(m->machine_units, unit);
if (!machine)
return 0;
if (streq_ptr(path, machine->scope_job)) {
free(machine->scope_job);
machine->scope_job = NULL;
if (machine->started) {
if (streq(result, "done"))
machine_send_create_reply(machine, NULL);
else {
_cleanup_bus_error_free_ sd_bus_error e = SD_BUS_ERROR_NULL;
sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result);
machine_send_create_reply(machine, &e);
}
} else
machine_save(machine);
}
machine_add_to_gc_queue(machine);
return 0;
}
int match_properties_changed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *unit = NULL;
Manager *m = userdata;
Machine *machine;
const char *path;
int r;
assert(bus);
assert(message);
assert(m);
path = sd_bus_message_get_path(message);
if (!path)
return 0;
r = unit_name_from_dbus_path(path, &unit);
if (r == -EINVAL) /* not for a unit */
return 0;
if (r < 0)
return r;
machine = hashmap_get(m->machine_units, unit);
if (machine)
machine_add_to_gc_queue(machine);
return 0;
}
int match_unit_removed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
const char *path, *unit;
Manager *m = userdata;
Machine *machine;
int r;
assert(bus);
assert(message);
assert(m);
r = sd_bus_message_read(message, "so", &unit, &path);
if (r < 0) {
bus_log_parse_error(r);
return r;
}
machine = hashmap_get(m->machine_units, unit);
if (machine)
machine_add_to_gc_queue(machine);
return 0;
}
int match_reloading(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
Machine *machine;
Iterator i;
int b, r;
assert(bus);
r = sd_bus_message_read(message, "b", &b);
if (r < 0) {
bus_log_parse_error(r);
return r;
}
if (b)
return 0;
/* systemd finished reloading, let's recheck all our machines */
log_debug("System manager has been reloaded, rechecking machines...");
HASHMAP_FOREACH(machine, m->machines, i)
machine_add_to_gc_queue(machine);
return 0;
}
int manager_start_scope(
Manager *manager,
const char *scope,
pid_t pid,
const char *slice,
const char *description,
sd_bus_message *more_properties,
sd_bus_error *error,
char **job) {
_cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
int r;
assert(manager);
assert(scope);
assert(pid > 1);
r = sd_bus_message_new_method_call(
manager->bus,
&m,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"StartTransientUnit");
if (r < 0)
return r;
r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
if (r < 0)
return r;
r = sd_bus_message_open_container(m, 'a', "(sv)");
if (r < 0)
return r;
if (!isempty(slice)) {
r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
if (r < 0)
return r;
}
if (!isempty(description)) {
r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
if (r < 0)
return r;
}
r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
if (r < 0)
return r;
r = sd_bus_message_append(m, "(sv)", "Delegate", "b", 1);
if (r < 0)
return r;
if (more_properties) {
r = sd_bus_message_copy(m, more_properties, true);
if (r < 0)
return r;
}
r = sd_bus_message_close_container(m);
if (r < 0)
return r;
r = sd_bus_message_append(m, "a(sa(sv))", 0);
if (r < 0)
return r;
r = sd_bus_call(manager->bus, m, 0, error, &reply);
if (r < 0)
return r;
if (job) {
const char *j;
char *copy;
r = sd_bus_message_read(reply, "o", &j);
if (r < 0)
return r;
copy = strdup(j);
if (!copy)
return -ENOMEM;
*job = copy;
}
return 1;
}
int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
int r;
assert(manager);
assert(unit);
r = sd_bus_call_method(
manager->bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"StopUnit",
error,
&reply,
"ss", unit, "fail");
if (r < 0) {
if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) {
if (job)
*job = NULL;
sd_bus_error_free(error);
return 0;
}
return r;
}
if (job) {
const char *j;
char *copy;
r = sd_bus_message_read(reply, "o", &j);
if (r < 0)
return r;
copy = strdup(j);
if (!copy)
return -ENOMEM;
*job = copy;
}
return 1;
}
int manager_kill_unit(Manager *manager, const char *unit, int signo, sd_bus_error *error) {
assert(manager);
assert(unit);
return sd_bus_call_method(
manager->bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"KillUnit",
error,
NULL,
"ssi", unit, "all", signo);
}
int manager_unit_is_active(Manager *manager, const char *unit) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_free_ char *path = NULL;
const char *state;
int r;
assert(manager);
assert(unit);
path = unit_dbus_path_from_name(unit);
if (!path)
return -ENOMEM;
r = sd_bus_get_property(
manager->bus,
"org.freedesktop.systemd1",
path,
"org.freedesktop.systemd1.Unit",
"ActiveState",
&error,
&reply,
"s");
if (r < 0) {
if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
return true;
if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) ||
sd_bus_error_has_name(&error, BUS_ERROR_LOAD_FAILED))
return false;
return r;
}
r = sd_bus_message_read(reply, "s", &state);
if (r < 0)
return -EINVAL;
return !streq(state, "inactive") && !streq(state, "failed");
}
int manager_job_is_active(Manager *manager, const char *path) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
int r;
assert(manager);
assert(path);
r = sd_bus_get_property(
manager->bus,
"org.freedesktop.systemd1",
path,
"org.freedesktop.systemd1.Job",
"State",
&error,
&reply,
"s");
if (r < 0) {
if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
return true;
if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
return false;
return r;
}
/* We don't actually care about the state really. The fact
* that we could read the job state is enough for us */
return true;
}
int manager_get_machine_by_pid(Manager *m, pid_t pid, Machine **machine) {
_cleanup_free_ char *unit = NULL;
Machine *mm;
int r;
assert(m);
assert(pid >= 1);
assert(machine);
r = cg_pid_get_unit(pid, &unit);
if (r < 0)
mm = hashmap_get(m->machine_leaders, UINT_TO_PTR(pid));
else
mm = hashmap_get(m->machine_units, unit);
if (!mm)
return 0;
*machine = mm;
return 1;
}
int manager_add_machine(Manager *m, const char *name, Machine **_machine) {
Machine *machine;
assert(m);
assert(name);
machine = hashmap_get(m->machines, name);
if (!machine) {
machine = machine_new(m, name);
if (!machine)
return -ENOMEM;
}
if (_machine)
*_machine = machine;
return 0;
}