+++ /dev/null
-/*-*- 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 <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "sd-id128.h"
-#include "path-util.h"
-#include "unit-name.h"
-#include "bus-util.h"
-#include "bus-common-errors.h"
-#include "cgroup-util.h"
-#include "btrfs-util.h"
-#include "machine-image.h"
-#include "machine-pool.h"
-#include "image-dbus.h"
-#include "machined.h"
-#include "machine-dbus.h"
-
-static int property_get_pool_path(
- 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", "/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 = -1;
- uint64_t usage = (uint64_t) -1;
- struct stat st;
-
- assert(bus);
- assert(reply);
-
- /* We try to read the quota info from /var/lib/machines, as
- * well as the usage of the loopback file
- * /var/lib/machines.raw, and pick the larger value. */
-
- fd = open("/var/lib/machines", O_RDONLY|O_CLOEXEC|O_DIRECTORY);
- if (fd >= 0) {
- BtrfsQuotaInfo q;
-
- if (btrfs_subvol_get_quota_fd(fd, &q) >= 0)
- usage = q.referenced;
- }
-
- if (stat("/var/lib/machines.raw", &st) >= 0) {
- if (usage == (uint64_t) -1 || st.st_blocks * 512ULL > usage)
- usage = st.st_blocks * 512ULL;
- }
-
- 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 = -1;
- uint64_t size = (uint64_t) -1;
- struct stat st;
-
- assert(bus);
- assert(reply);
-
- /* We try to read the quota limit from /var/lib/machines, as
- * well as the size of the loopback file
- * /var/lib/machines.raw, and pick the smaller value. */
-
- fd = open("/var/lib/machines", O_RDONLY|O_CLOEXEC|O_DIRECTORY);
- if (fd >= 0) {
- BtrfsQuotaInfo q;
-
- if (btrfs_subvol_get_quota_fd(fd, &q) >= 0)
- size = q.referenced_max;
- }
-
- if (stat("/var/lib/machines.raw", &st) >= 0) {
- if (size == (uint64_t) -1 || (uint64_t) st.st_size < size)
- size = st.st_size;
- }
-
- return sd_bus_message_append(reply, "t", size);
-}
-
-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);
-}
-
-static int method_set_pool_limit(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
- Manager *m = userdata;
- uint64_t limit;
- int r;
-
- assert(bus);
- r = sd_bus_message_read(message, "t", &limit);
- if (r < 0)
- return r;
-
- r = bus_verify_polkit_async(
- message,
- CAP_SYS_ADMIN,
- "org.freedesktop.machine1.manage-machines",
- false,
- UID_INVALID,
- &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(limit, error);
- if (r < 0)
- return r;
-
- r = btrfs_resize_loopback("/var/lib/machines", limit, false);
- if (r == -ENOTTY)
- return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Quota is only supported on btrfs.");
- if (r < 0 && r != -ENODEV) /* ignore ENODEV, as that's what is returned if the file system is not on loopback */
- return sd_bus_error_set_errnof(error, r, "Failed to adjust loopback limit: %m");
-
- r = btrfs_quota_limit("/var/lib/machines", limit);
- if (r == -ENOTTY)
- return sd_bus_error_setf(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 *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_set_limit(bus, message, i, error);
-}
-
-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("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_METHOD("SetPoolLimit", "t", NULL, method_set_pool_limit, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("SetImageLimit", "st", NULL, method_set_image_limit, 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;
-}
~ianmdlvl / elogind.git / blobdiff