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systemd/src/machine/machined-dbus.c
T
Daan De Meyer 1cf40697e3 tree-wide: Sort includes 
This was done by running a locally built clang-format with
https://github.com/llvm/llvm-project/pull/137617 and
https://github.com/llvm/llvm-project/pull/137840 applied on all .c
and .h files.
2025-04-30 09:30:51 +02:00

1339 lines
49 KiB
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <errno.h>
#include <unistd.h>
#include "sd-id128.h"
#include "alloc-util.h"
#include "btrfs-util.h"
#include "bus-common-errors.h"
#include "bus-get-properties.h"
#include "bus-locator.h"
#include "bus-message-util.h"
#include "bus-polkit.h"
#include "bus-util.h"
#include "cgroup-util.h"
#include "discover-image.h"
#include "errno-util.h"
#include "fd-util.h"
#include "fileio.h"
#include "format-util.h"
#include "hostname-util.h"
#include "image.h"
#include "image-dbus.h"
#include "io-util.h"
#include "machine.h"
#include "machine-dbus.h"
#include "machine-pool.h"
#include "machined.h"
#include "operation.h"
#include "os-util.h"
#include "path-util.h"
#include "process-util.h"
#include "stdio-util.h"
#include "strv.h"
#include "unit-name.h"
#include "user-util.h"
static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_pool_path, "s", "/var/lib/machines");
static int property_get_pool_usage(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
_cleanup_close_ int fd = -EBADF;
uint64_t usage = UINT64_MAX;
assert(bus);
assert(reply);
fd = open("/var/lib/machines", O_RDONLY|O_CLOEXEC|O_DIRECTORY);
if (fd >= 0) {
BtrfsQuotaInfo q;
if (btrfs_subvol_get_subtree_quota_fd(fd, 0, &q) >= 0)
usage = q.referenced;
}
return sd_bus_message_append(reply, "t", usage);
}
static int property_get_pool_limit(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
_cleanup_close_ int fd = -EBADF;
uint64_t size = UINT64_MAX;
assert(bus);
assert(reply);
fd = open("/var/lib/machines", O_RDONLY|O_CLOEXEC|O_DIRECTORY);
if (fd >= 0) {
BtrfsQuotaInfo q;
if (btrfs_subvol_get_subtree_quota_fd(fd, 0, &q) >= 0)
size = q.referenced_max;
}
return sd_bus_message_append(reply, "t", size);
}
static int method_get_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *p = NULL;
Manager *m = ASSERT_PTR(userdata);
Machine *machine;
const char *name;
int r;
assert(message);
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_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *p = NULL;
_unused_ Manager *m = ASSERT_PTR(userdata);
const char *name;
int r;
assert(message);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
r = image_find(m->runtime_scope, IMAGE_MACHINE, name, NULL, NULL);
if (r == -ENOENT)
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_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(pidref_done) PidRef pidref = PIDREF_NULL;
_cleanup_free_ char *p = NULL;
Manager *m = ASSERT_PTR(userdata);
Machine *machine = NULL;
pid_t pid;
int r;
assert(message);
assert_cc(sizeof(pid_t) == sizeof(uint32_t));
r = sd_bus_message_read(message, "u", &pid);
if (r < 0)
return r;
if (pid < 0)
return -EINVAL;
pidref = PIDREF_MAKE_FROM_PID(pid);
if (pid == 0) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID|SD_BUS_CREDS_PIDFD, &creds);
if (r < 0)
return r;
r = bus_creds_get_pidref(creds, &pidref);
if (r < 0)
return r;
}
r = manager_get_machine_by_pidref(m, &pidref, &machine);
if (r < 0)
return r;
if (r == 0)
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_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
Manager *m = ASSERT_PTR(userdata);
Machine *machine;
int r;
assert(message);
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) {
_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(NULL, reply, NULL);
}
static int method_create_or_register_machine(
Manager *manager,
sd_bus_message *message,
bool read_network,
Machine **ret,
sd_bus_error *error) {
_cleanup_(pidref_done) PidRef pidref = PIDREF_NULL;
const char *name, *service, *class, *root_directory;
const int32_t *netif = NULL;
MachineClass c;
uint32_t leader;
sd_id128_t id;
Machine *m;
size_t n_netif = 0;
int r;
assert(manager);
assert(message);
assert(ret);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
if (!hostname_is_valid(name, 0))
return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid machine name");
r = bus_message_read_id128(message, &id);
if (r < 0)
return sd_bus_error_set(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) {
r = sd_bus_message_read_array(message, 'i', (const void**) &netif, &n_netif);
if (r < 0)
return r;
n_netif /= sizeof(int32_t);
for (size_t 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_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid machine class parameter");
}
if (leader == 1)
return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
if (!isempty(root_directory) && !path_is_absolute(root_directory))
return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Root directory must be empty or an absolute path");
if (leader == 0) {
r = bus_query_sender_pidref(message, &pidref);
if (r < 0)
return sd_bus_error_set_errnof(error, r, "Failed to pin client process: %m");
} else {
r = pidref_set_pid(&pidref, leader);
if (r < 0)
return sd_bus_error_set_errnof(error, r, "Failed to pin process " PID_FMT ": %m", (pid_t) leader);
}
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 = TAKE_PIDREF(pidref);
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;
}
*ret = m;
return 1;
fail:
machine_add_to_gc_queue(m);
return r;
}
static int method_create_machine_internal(sd_bus_message *message, bool read_network, void *userdata, sd_bus_error *error) {
Manager *manager = ASSERT_PTR(userdata);
Machine *m = NULL;
int r;
assert(message);
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_message *message, void *userdata, sd_bus_error *error) {
return method_create_machine_internal(message, true, userdata, error);
}
static int method_create_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_create_machine_internal(message, false, userdata, error);
}
static int method_register_machine_internal(sd_bus_message *message, bool read_network, void *userdata, sd_bus_error *error) {
Manager *manager = ASSERT_PTR(userdata);
_cleanup_free_ char *p = NULL;
Machine *m = NULL;
int r;
assert(message);
r = method_create_or_register_machine(manager, message, read_network, &m, error);
if (r < 0)
return r;
r = cg_pidref_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" : %m",
m->leader.pid);
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_message *message, void *userdata, sd_bus_error *error) {
return method_register_machine_internal(message, true, userdata, error);
}
static int method_register_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return method_register_machine_internal(message, false, userdata, error);
}
static int redirect_method_to_machine(sd_bus_message *message, Manager *m, sd_bus_error *error, sd_bus_message_handler_t method) {
Machine *machine;
const char *name;
int r;
assert(message);
assert(m);
assert(method);
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 method(message, machine, error);
}
static int method_unregister_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_machine(message, userdata, error, bus_machine_method_unregister);
}
static int method_terminate_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_machine(message, userdata, error, bus_machine_method_terminate);
}
static int method_kill_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_machine(message, userdata, error, bus_machine_method_kill);
}
static int method_get_machine_addresses(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_machine(message, userdata, error, bus_machine_method_get_addresses);
}
static int method_get_machine_ssh_info(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_machine(message, userdata, error, bus_machine_method_get_ssh_info);
}
static int method_get_machine_os_release(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_machine(message, userdata, error, bus_machine_method_get_os_release);
}
static int method_list_images(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
_cleanup_hashmap_free_ Hashmap *images = NULL;
_unused_ Manager *m = ASSERT_PTR(userdata);
Image *image;
int r;
assert(message);
images = hashmap_new(&image_hash_ops);
if (!images)
return -ENOMEM;
r = image_discover(m->runtime_scope, IMAGE_MACHINE, NULL, 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) {
_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(NULL, reply, NULL);
}
static int method_open_machine_pty(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_machine(message, userdata, error, bus_machine_method_open_pty);
}
static int method_open_machine_login(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_machine(message, userdata, error, bus_machine_method_open_login);
}
static int method_open_machine_shell(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_machine(message, userdata, error, bus_machine_method_open_shell);
}
static int method_bind_mount_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_machine(message, userdata, error, bus_machine_method_bind_mount);
}
static int method_copy_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_machine(message, userdata, error, bus_machine_method_copy);
}
static int method_open_machine_root_directory(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_machine(message, userdata, error, bus_machine_method_open_root_directory);
}
static int method_get_machine_uid_shift(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_machine(message, userdata, error, bus_machine_method_get_uid_shift);
}
static int redirect_method_to_image(sd_bus_message *message, Manager *m, sd_bus_error *error, sd_bus_message_handler_t method) {
const char *name;
Image *i;
int r;
assert(message);
assert(m);
assert(method);
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 = manager_acquire_image(m, name, &i);
if (r == -ENOENT)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
if (r < 0)
return r;
return method(message, i, error);
}
static int method_remove_image(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_image(message, userdata, error, bus_image_method_remove);
}
static int method_rename_image(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_image(message, userdata, error, bus_image_method_rename);
}
static int method_clone_image(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_image(message, userdata, error, bus_image_method_clone);
}
static int method_mark_image_read_only(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_image(message, userdata, error, bus_image_method_mark_read_only);
}
static int method_get_image_hostname(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_image(message, userdata, error, bus_image_method_get_hostname);
}
static int method_get_image_machine_id(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_image(message, userdata, error, bus_image_method_get_machine_id);
}
static int method_get_image_machine_info(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_image(message, userdata, error, bus_image_method_get_machine_info);
}
static int method_get_image_os_release(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_image(message, userdata, error, bus_image_method_get_os_release);
}
static int clean_pool_done(Operation *operation, int child_error, sd_bus_error *error) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
_cleanup_fclose_ FILE *file = NULL;
int r;
assert(operation);
assert(operation->message);
assert(operation->extra_fd >= 0);
file = take_fdopen(&operation->extra_fd, "r");
if (!file)
return log_debug_errno(errno, "Failed to take opened tmp file's fd: %m");
r = clean_pool_read_first_entry(file, child_error, error);
if (r < 0)
return r;
r = sd_bus_message_new_method_return(operation->message, &reply);
if (r < 0)
return r;
r = sd_bus_message_open_container(reply, 'a', "(st)");
if (r < 0)
return r;
/* On success the resulting temporary file will contain a list of image names that were removed followed by
* their size on disk. Let's read that and turn it into a bus message. */
for (;;) {
_cleanup_free_ char *name = NULL;
uint64_t usage;
r = clean_pool_read_next_entry(file, &name, &usage);
if (r < 0)
return r;
if (r == 0)
break;
r = sd_bus_message_append(reply, "(st)", name, usage);
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_clean_pool(sd_bus_message *message, void *userdata, sd_bus_error *error) {
ImageCleanPoolMode mode;
Manager *m = userdata;
Operation *operation;
const char *mm;
int r;
assert(message);
if (m->n_operations >= OPERATIONS_MAX)
return sd_bus_error_set(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Too many ongoing operations.");
r = sd_bus_message_read(message, "s", &mm);
if (r < 0)
return r;
if (streq(mm, "all"))
mode = IMAGE_CLEAN_POOL_REMOVE_ALL;
else if (streq(mm, "hidden"))
mode = IMAGE_CLEAN_POOL_REMOVE_HIDDEN;
else
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown mode '%s'.", mm);
const char *details[] = {
"verb", "clean_pool",
"mode", mm,
NULL
};
r = bus_verify_polkit_async(
message,
"org.freedesktop.machine1.manage-machines",
details,
&m->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* Will call us back */
r = image_clean_pool_operation(m, mode, &operation);
if (r < 0)
return log_debug_errno(r, "Failed to clean pool of images: %m");
operation_attach_bus_reply(operation, message);
operation->done = clean_pool_done;
return 1;
}
static int method_set_pool_limit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
uint64_t limit;
int r;
assert(message);
r = sd_bus_message_read(message, "t", &limit);
if (r < 0)
return r;
if (!FILE_SIZE_VALID_OR_INFINITY(limit))
return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "New limit out of range");
const char *details[] = {
"verb", "set_pool_limit",
NULL
};
r = bus_verify_polkit_async(
message,
"org.freedesktop.machine1.manage-machines",
details,
&m->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* Will call us back */
/* Set up the machine directory if necessary */
r = setup_machine_directory(error, /* use_btrfs_subvol= */ true, /* use_btrfs_quota= */ true);
if (r < 0)
return r;
r = image_set_pool_limit(IMAGE_MACHINE, limit);
if (ERRNO_IS_NEG_NOT_SUPPORTED(r))
return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Quota is only supported on btrfs.");
if (r < 0)
return sd_bus_error_set_errnof(error, r, "Failed to adjust quota limit: %m");
return sd_bus_reply_method_return(message, NULL);
}
static int method_set_image_limit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return redirect_method_to_image(message, userdata, error, bus_image_method_set_limit);
}
static int method_map_from_machine_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
const char *name;
Machine *machine;
uint32_t uid;
uid_t converted;
int r;
r = sd_bus_message_read(message, "su", &name, &uid);
if (r < 0)
return r;
if (!uid_is_valid(uid))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid user ID " UID_FMT, uid);
machine = hashmap_get(m->machines, name);
if (!machine)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
if (machine->class != MACHINE_CONTAINER)
return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Not supported for non-container machines.");
r = machine_translate_uid(machine, uid, &converted);
if (r == -ESRCH)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER_MAPPING, "Machine '%s' has no matching user mappings.", name);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, "u", (uint32_t) converted);
}
static int method_map_to_machine_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *o = NULL;
Manager *m = userdata;
Machine *machine;
uid_t uid, converted;
int r;
r = sd_bus_message_read(message, "u", &uid);
if (r < 0)
return r;
if (!uid_is_valid(uid))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid user ID " UID_FMT, uid);
if (uid < 0x10000)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER_MAPPING, "User " UID_FMT " belongs to host UID range", uid);
r = manager_find_machine_for_uid(m, uid, &machine, &converted);
if (r < 0)
return r;
if (!r)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER_MAPPING, "No matching user mapping for " UID_FMT ".", uid);
o = machine_bus_path(machine);
if (!o)
return -ENOMEM;
return sd_bus_reply_method_return(message, "sou", machine->name, o, (uint32_t) converted);
}
static int method_map_from_machine_group(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
const char *name;
Machine *machine;
gid_t converted;
uint32_t gid;
int r;
r = sd_bus_message_read(message, "su", &name, &gid);
if (r < 0)
return r;
if (!gid_is_valid(gid))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid group ID " GID_FMT, gid);
machine = hashmap_get(m->machines, name);
if (!machine)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
if (machine->class != MACHINE_CONTAINER)
return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Not supported for non-container machines.");
r = machine_translate_gid(machine, gid, &converted);
if (r == -ESRCH)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER_MAPPING, "Machine '%s' has no matching group mappings.", name);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, "u", (uint32_t) converted);
}
static int method_map_to_machine_group(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *o = NULL;
Manager *m = userdata;
Machine *machine;
gid_t gid, converted;
int r;
r = sd_bus_message_read(message, "u", &gid);
if (r < 0)
return r;
if (!gid_is_valid(gid))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid group ID " GID_FMT, gid);
if (gid < 0x10000)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_GROUP_MAPPING, "Group " GID_FMT " belongs to host GID range", gid);
r = manager_find_machine_for_gid(m, gid, &machine, &converted);
if (r < 0)
return r;
if (!r)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_GROUP_MAPPING, "No matching group mapping for " GID_FMT ".", gid);
o = machine_bus_path(machine);
if (!o)
return -ENOMEM;
return sd_bus_reply_method_return(message, "sou", machine->name, o, (uint32_t) converted);
}
const sd_bus_vtable manager_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_PROPERTY("PoolPath", "s", property_get_pool_path, 0, 0),
SD_BUS_PROPERTY("PoolUsage", "t", property_get_pool_usage, 0, 0),
SD_BUS_PROPERTY("PoolLimit", "t", property_get_pool_limit, 0, 0),
SD_BUS_METHOD_WITH_ARGS("GetMachine",
SD_BUS_ARGS("s", name),
SD_BUS_RESULT("o", machine),
method_get_machine,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("GetImage",
SD_BUS_ARGS("s", name),
SD_BUS_RESULT("o", image),
method_get_image,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("GetMachineByPID",
SD_BUS_ARGS("u", pid),
SD_BUS_RESULT("o", machine),
method_get_machine_by_pid,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("ListMachines",
SD_BUS_NO_ARGS,
SD_BUS_RESULT("a(ssso)", machines),
method_list_machines,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("ListImages",
SD_BUS_NO_ARGS,
SD_BUS_RESULT("a(ssbttto)", images),
method_list_images,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("CreateMachine",
SD_BUS_ARGS("s", name, "ay", id, "s", service, "s", class, "u", leader, "s", root_directory, "a(sv)", scope_properties),
SD_BUS_RESULT("o", path),
method_create_machine, 0),
SD_BUS_METHOD_WITH_ARGS("CreateMachineWithNetwork",
SD_BUS_ARGS("s", name, "ay", id, "s", service, "s", class, "u", leader, "s", root_directory, "ai", ifindices, "a(sv)", scope_properties),
SD_BUS_RESULT("o", path),
method_create_machine_with_network, 0),
SD_BUS_METHOD_WITH_ARGS("RegisterMachine",
SD_BUS_ARGS("s", name, "ay", id, "s", service, "s", class, "u", leader, "s", root_directory),
SD_BUS_RESULT("o", path),
method_register_machine, 0),
SD_BUS_METHOD_WITH_ARGS("RegisterMachineWithNetwork",
SD_BUS_ARGS("s", name, "ay", id, "s", service, "s", class, "u", leader, "s", root_directory, "ai", ifindices),
SD_BUS_RESULT("o", path),
method_register_machine_with_network, 0),
SD_BUS_METHOD_WITH_ARGS("UnregisterMachine",
SD_BUS_ARGS("s", name),
SD_BUS_NO_RESULT,
method_unregister_machine,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("TerminateMachine",
SD_BUS_ARGS("s", id),
SD_BUS_NO_RESULT,
method_terminate_machine,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("KillMachine",
SD_BUS_ARGS("s", name, "s", whom, "i", signal),
SD_BUS_NO_RESULT,
method_kill_machine,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("GetMachineAddresses",
SD_BUS_ARGS("s", name),
SD_BUS_RESULT("a(iay)", addresses),
method_get_machine_addresses,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("GetMachineSSHInfo",
SD_BUS_ARGS("s", name),
SD_BUS_RESULT("s", ssh_address, "s", ssh_private_key_path),
method_get_machine_ssh_info,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("GetMachineOSRelease",
SD_BUS_ARGS("s", name),
SD_BUS_RESULT("a{ss}", fields),
method_get_machine_os_release,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("OpenMachinePTY",
SD_BUS_ARGS("s", name),
SD_BUS_RESULT("h", pty, "s", pty_path),
method_open_machine_pty,
0),
SD_BUS_METHOD_WITH_ARGS("OpenMachineLogin",
SD_BUS_ARGS("s", name),
SD_BUS_RESULT("h", pty, "s", pty_path),
method_open_machine_login,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("OpenMachineShell",
SD_BUS_ARGS("s", name, "s", user, "s", path, "as", args, "as", environment),
SD_BUS_RESULT("h", pty, "s", pty_path),
method_open_machine_shell,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("BindMountMachine",
SD_BUS_ARGS("s", name, "s", source, "s", destination, "b", read_only, "b", mkdir),
SD_BUS_NO_RESULT,
method_bind_mount_machine,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("CopyFromMachine",
SD_BUS_ARGS("s", name, "s", source, "s", destination),
SD_BUS_NO_RESULT,
method_copy_machine,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("CopyToMachine",
SD_BUS_ARGS("s", name, "s", source, "s", destination),
SD_BUS_NO_RESULT,
method_copy_machine,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("CopyFromMachineWithFlags",
SD_BUS_ARGS("s", name, "s", source, "s", destination, "t", flags),
SD_BUS_NO_RESULT,
method_copy_machine,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("CopyToMachineWithFlags",
SD_BUS_ARGS("s", name, "s", source, "s", destination, "t", flags),
SD_BUS_NO_RESULT,
method_copy_machine,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("OpenMachineRootDirectory",
SD_BUS_ARGS("s", name),
SD_BUS_RESULT("h", fd),
method_open_machine_root_directory,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("GetMachineUIDShift",
SD_BUS_ARGS("s", name),
SD_BUS_RESULT("u", shift),
method_get_machine_uid_shift,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("RemoveImage",
SD_BUS_ARGS("s", name),
SD_BUS_NO_RESULT,
method_remove_image,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("RenameImage",
SD_BUS_ARGS("s", name, "s", new_name),
SD_BUS_NO_RESULT,
method_rename_image,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("CloneImage",
SD_BUS_ARGS("s", name, "s", new_name, "b", read_only),
SD_BUS_NO_RESULT,
method_clone_image,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("MarkImageReadOnly",
SD_BUS_ARGS("s", name, "b", read_only),
SD_BUS_NO_RESULT,
method_mark_image_read_only,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("GetImageHostname",
SD_BUS_ARGS("s", name),
SD_BUS_RESULT("s", hostname),
method_get_image_hostname,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("GetImageMachineID",
SD_BUS_ARGS("s", name),
SD_BUS_RESULT("ay", id),
method_get_image_machine_id,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("GetImageMachineInfo",
SD_BUS_ARGS("s", name),
SD_BUS_RESULT("a{ss}", machine_info),
method_get_image_machine_info,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("GetImageOSRelease",
SD_BUS_ARGS("s", name),
SD_BUS_RESULT("a{ss}", os_release),
method_get_image_os_release,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("SetPoolLimit",
SD_BUS_ARGS("t", size),
SD_BUS_NO_RESULT,
method_set_pool_limit,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("SetImageLimit",
SD_BUS_ARGS("s", name, "t", size),
SD_BUS_NO_RESULT,
method_set_image_limit,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("CleanPool",
SD_BUS_ARGS("s", mode),
SD_BUS_RESULT("a(st)",images),
method_clean_pool,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("MapFromMachineUser",
SD_BUS_ARGS("s", name, "u", uid_inner),
SD_BUS_RESULT("u", uid_outer),
method_map_from_machine_user,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("MapToMachineUser",
SD_BUS_ARGS("u", uid_outer),
SD_BUS_RESULT("s", machine_name, "o", machine_path, "u", uid_inner),
method_map_to_machine_user,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("MapFromMachineGroup",
SD_BUS_ARGS("s", name, "u", gid_inner),
SD_BUS_RESULT("u", gid_outer),
method_map_from_machine_group,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_ARGS("MapToMachineGroup",
SD_BUS_ARGS("u", gid_outer),
SD_BUS_RESULT("s", machine_name, "o", machine_path, "u", gid_inner),
method_map_to_machine_group,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_SIGNAL_WITH_ARGS("MachineNew",
SD_BUS_ARGS("s", machine, "o", path),
0),
SD_BUS_SIGNAL_WITH_ARGS("MachineRemoved",
SD_BUS_ARGS("s", machine, "o", path),
0),
SD_BUS_VTABLE_END
};
const BusObjectImplementation manager_object = {
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
.vtables = BUS_VTABLES(manager_vtable),
.children = BUS_IMPLEMENTATIONS( &machine_object,
&image_object ),
};
int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
const char *path, *result, *unit;
Manager *m = ASSERT_PTR(userdata);
Machine *machine;
uint32_t id;
int r;
assert(message);
r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
if (r < 0) {
bus_log_parse_error(r);
return 0;
}
machine = hashmap_get(m->machines_by_unit, unit);
if (!machine)
return 0;
if (streq_ptr(path, machine->scope_job)) {
machine->scope_job = mfree(machine->scope_job);
if (machine->started) {
if (streq(result, "done"))
machine_send_create_reply(machine, NULL);
else {
_cleanup_(sd_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);
}
}
machine_save(machine);
}
machine_add_to_gc_queue(machine);
return 0;
}
int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *unit = NULL;
const char *path;
Manager *m = ASSERT_PTR(userdata);
Machine *machine;
int r;
assert(message);
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) {
log_oom();
return 0;
}
machine = hashmap_get(m->machines_by_unit, unit);
if (!machine)
return 0;
machine_add_to_gc_queue(machine);
return 0;
}
int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
const char *path, *unit;
Manager *m = ASSERT_PTR(userdata);
Machine *machine;
int r;
assert(message);
r = sd_bus_message_read(message, "so", &unit, &path);
if (r < 0) {
bus_log_parse_error(r);
return 0;
}
machine = hashmap_get(m->machines_by_unit, unit);
if (!machine)
return 0;
machine_add_to_gc_queue(machine);
return 0;
}
int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = ASSERT_PTR(userdata);
Machine *machine;
int b, r;
assert(message);
r = sd_bus_message_read(message, "b", &b);
if (r < 0) {
bus_log_parse_error(r);
return 0;
}
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)
machine_add_to_gc_queue(machine);
return 0;
}
int manager_unref_unit(
Manager *m,
const char *unit,
sd_bus_error *error) {
assert(m);
assert(unit);
return bus_call_method(m->bus, bus_systemd_mgr, "UnrefUnit", error, NULL, "s", unit);
}
int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
int r;
assert(manager);
assert(unit);
r = bus_call_method(manager->bus, bus_systemd_mgr, "StopUnit", error, &reply, "ss", unit, "fail");
if (r < 0) {
if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
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 bus_call_method(manager->bus, bus_systemd_mgr, "KillUnit", error, NULL, "ssi", unit, "all", signo);
}
int manager_unit_is_active(Manager *manager, const char *unit) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) 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_names(&error, SD_BUS_ERROR_NO_REPLY,
SD_BUS_ERROR_DISCONNECTED))
return true;
if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
BUS_ERROR_LOAD_FAILED))
return false;
return r;
}
r = sd_bus_message_read(reply, "s", &state);
if (r < 0)
return -EINVAL;
return !STR_IN_SET(state, "inactive", "failed");
}
int manager_job_is_active(Manager *manager, const char *path) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) 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_names(&error, SD_BUS_ERROR_NO_REPLY,
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;
}
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