| /*** |
| This file is part of systemd. |
| |
| Copyright 2015 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 "sd-bus.h" |
| |
| #include "bus-error.h" |
| #include "bus-unit-util.h" |
| #include "bus-util.h" |
| #include "nspawn-register.h" |
| #include "stat-util.h" |
| #include "strv.h" |
| #include "util.h" |
| |
| int register_machine( |
| const char *machine_name, |
| pid_t pid, |
| const char *directory, |
| sd_id128_t uuid, |
| int local_ifindex, |
| const char *slice, |
| CustomMount *mounts, |
| unsigned n_mounts, |
| int kill_signal, |
| char **properties, |
| bool keep_unit, |
| const char *service) { |
| |
| _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
| _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; |
| int r; |
| |
| r = sd_bus_default_system(&bus); |
| if (r < 0) |
| return log_error_errno(r, "Failed to open system bus: %m"); |
| |
| if (keep_unit) { |
| r = sd_bus_call_method( |
| bus, |
| "org.freedesktop.machine1", |
| "/org/freedesktop/machine1", |
| "org.freedesktop.machine1.Manager", |
| "RegisterMachineWithNetwork", |
| &error, |
| NULL, |
| "sayssusai", |
| machine_name, |
| SD_BUS_MESSAGE_APPEND_ID128(uuid), |
| service, |
| "container", |
| (uint32_t) pid, |
| strempty(directory), |
| local_ifindex > 0 ? 1 : 0, local_ifindex); |
| } else { |
| _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; |
| unsigned j; |
| |
| r = sd_bus_message_new_method_call( |
| bus, |
| &m, |
| "org.freedesktop.machine1", |
| "/org/freedesktop/machine1", |
| "org.freedesktop.machine1.Manager", |
| "CreateMachineWithNetwork"); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| r = sd_bus_message_append( |
| m, |
| "sayssusai", |
| machine_name, |
| SD_BUS_MESSAGE_APPEND_ID128(uuid), |
| service, |
| "container", |
| (uint32_t) pid, |
| strempty(directory), |
| local_ifindex > 0 ? 1 : 0, local_ifindex); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| r = sd_bus_message_open_container(m, 'a', "(sv)"); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| if (!isempty(slice)) { |
| r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice); |
| if (r < 0) |
| return bus_log_create_error(r); |
| } |
| |
| r = sd_bus_message_append(m, "(sv)", "DevicePolicy", "s", "closed"); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| /* If you make changes here, also make sure to update |
| * systemd-nspawn@.service, to keep the device |
| * policies in sync regardless if we are run with or |
| * without the --keep-unit switch. */ |
| r = sd_bus_message_append(m, "(sv)", "DeviceAllow", "a(ss)", 2, |
| /* Allow the container to |
| * access and create the API |
| * device nodes, so that |
| * PrivateDevices= in the |
| * container can work |
| * fine */ |
| "/dev/net/tun", "rwm", |
| /* Allow the container |
| * access to ptys. However, |
| * do not permit the |
| * container to ever create |
| * these device nodes. */ |
| "char-pts", "rw"); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| for (j = 0; j < n_mounts; j++) { |
| CustomMount *cm = mounts + j; |
| |
| if (cm->type != CUSTOM_MOUNT_BIND) |
| continue; |
| |
| r = is_device_node(cm->source); |
| if (r < 0) |
| return log_error_errno(r, "Failed to stat %s: %m", cm->source); |
| |
| if (r) { |
| r = sd_bus_message_append(m, "(sv)", "DeviceAllow", "a(ss)", 1, |
| cm->source, cm->read_only ? "r" : "rw"); |
| if (r < 0) |
| return log_error_errno(r, "Failed to append message arguments: %m"); |
| } |
| } |
| |
| if (kill_signal != 0) { |
| r = sd_bus_message_append(m, "(sv)", "KillSignal", "i", kill_signal); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| r = sd_bus_message_append(m, "(sv)", "KillMode", "s", "mixed"); |
| if (r < 0) |
| return bus_log_create_error(r); |
| } |
| |
| r = bus_append_unit_property_assignment_many(m, properties); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_close_container(m); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| r = sd_bus_call(bus, m, 0, &error, NULL); |
| } |
| |
| if (r < 0) { |
| log_error("Failed to register machine: %s", bus_error_message(&error, r)); |
| return r; |
| } |
| |
| return 0; |
| } |
| |
| int terminate_machine(pid_t pid) { |
| _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
| _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
| _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; |
| const char *path; |
| int r; |
| |
| r = sd_bus_default_system(&bus); |
| if (r < 0) |
| return log_error_errno(r, "Failed to open system bus: %m"); |
| |
| r = sd_bus_call_method( |
| bus, |
| "org.freedesktop.machine1", |
| "/org/freedesktop/machine1", |
| "org.freedesktop.machine1.Manager", |
| "GetMachineByPID", |
| &error, |
| &reply, |
| "u", |
| (uint32_t) pid); |
| if (r < 0) { |
| /* Note that the machine might already have been |
| * cleaned up automatically, hence don't consider it a |
| * failure if we cannot get the machine object. */ |
| log_debug("Failed to get machine: %s", bus_error_message(&error, r)); |
| return 0; |
| } |
| |
| r = sd_bus_message_read(reply, "o", &path); |
| if (r < 0) |
| return bus_log_parse_error(r); |
| |
| r = sd_bus_call_method( |
| bus, |
| "org.freedesktop.machine1", |
| path, |
| "org.freedesktop.machine1.Machine", |
| "Terminate", |
| &error, |
| NULL, |
| NULL); |
| if (r < 0) { |
| log_debug("Failed to terminate machine: %s", bus_error_message(&error, r)); |
| return 0; |
| } |
| |
| return 0; |
| } |