| /*** |
| 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 <sys/mount.h> |
| #include <sys/wait.h> |
| |
| /* When we include libgen.h because we need dirname() we immediately |
| * undefine basename() since libgen.h defines it as a macro to the POSIX |
| * version which is really broken. We prefer GNU basename(). */ |
| #include <libgen.h> |
| #undef basename |
| |
| #include "alloc-util.h" |
| #include "bus-common-errors.h" |
| #include "bus-internal.h" |
| #include "bus-label.h" |
| #include "bus-util.h" |
| #include "copy.h" |
| #include "env-util.h" |
| #include "fd-util.h" |
| #include "fileio.h" |
| #include "formats-util.h" |
| #include "fs-util.h" |
| #include "in-addr-util.h" |
| #include "local-addresses.h" |
| #include "machine-dbus.h" |
| #include "machine.h" |
| #include "mkdir.h" |
| #include "path-util.h" |
| #include "process-util.h" |
| #include "signal-util.h" |
| #include "strv.h" |
| #include "terminal-util.h" |
| #include "user-util.h" |
| |
| static int property_get_id( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Machine *m = userdata; |
| |
| assert(bus); |
| assert(reply); |
| assert(m); |
| |
| return sd_bus_message_append_array(reply, 'y', &m->id, 16); |
| } |
| |
| static int property_get_state( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Machine *m = userdata; |
| const char *state; |
| int r; |
| |
| assert(bus); |
| assert(reply); |
| assert(m); |
| |
| state = machine_state_to_string(machine_get_state(m)); |
| |
| r = sd_bus_message_append_basic(reply, 's', state); |
| if (r < 0) |
| return r; |
| |
| return 1; |
| } |
| |
| static int property_get_netif( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Machine *m = userdata; |
| |
| assert(bus); |
| assert(reply); |
| assert(m); |
| |
| assert_cc(sizeof(int) == sizeof(int32_t)); |
| |
| return sd_bus_message_append_array(reply, 'i', m->netif, m->n_netif * sizeof(int)); |
| } |
| |
| static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_class, machine_class, MachineClass); |
| |
| int bus_machine_method_terminate(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| Machine *m = userdata; |
| int r; |
| |
| assert(message); |
| assert(m); |
| |
| r = bus_verify_polkit_async( |
| message, |
| CAP_KILL, |
| "org.freedesktop.machine1.manage-machines", |
| NULL, |
| false, |
| UID_INVALID, |
| &m->manager->polkit_registry, |
| error); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* Will call us back */ |
| |
| r = machine_stop(m); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_reply_method_return(message, NULL); |
| } |
| |
| int bus_machine_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| Machine *m = userdata; |
| const char *swho; |
| int32_t signo; |
| KillWho who; |
| int r; |
| |
| assert(message); |
| assert(m); |
| |
| r = sd_bus_message_read(message, "si", &swho, &signo); |
| if (r < 0) |
| return r; |
| |
| if (isempty(swho)) |
| who = KILL_ALL; |
| else { |
| who = kill_who_from_string(swho); |
| if (who < 0) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid kill parameter '%s'", swho); |
| } |
| |
| if (!SIGNAL_VALID(signo)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo); |
| |
| r = bus_verify_polkit_async( |
| message, |
| CAP_KILL, |
| "org.freedesktop.machine1.manage-machines", |
| NULL, |
| false, |
| UID_INVALID, |
| &m->manager->polkit_registry, |
| error); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* Will call us back */ |
| |
| r = machine_kill(m, who, signo); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_reply_method_return(message, NULL); |
| } |
| |
| int bus_machine_method_get_addresses(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
| Machine *m = userdata; |
| int r; |
| |
| assert(message); |
| assert(m); |
| |
| r = sd_bus_message_new_method_return(message, &reply); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_open_container(reply, 'a', "(iay)"); |
| if (r < 0) |
| return r; |
| |
| switch (m->class) { |
| |
| case MACHINE_HOST: { |
| _cleanup_free_ struct local_address *addresses = NULL; |
| struct local_address *a; |
| int n, i; |
| |
| n = local_addresses(NULL, 0, AF_UNSPEC, &addresses); |
| if (n < 0) |
| return n; |
| |
| for (a = addresses, i = 0; i < n; a++, i++) { |
| |
| r = sd_bus_message_open_container(reply, 'r', "iay"); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_append(reply, "i", addresses[i].family); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_append_array(reply, 'y', &addresses[i].address, FAMILY_ADDRESS_SIZE(addresses[i].family)); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_close_container(reply); |
| if (r < 0) |
| return r; |
| } |
| |
| break; |
| } |
| |
| case MACHINE_CONTAINER: { |
| _cleanup_close_pair_ int pair[2] = { -1, -1 }; |
| _cleanup_free_ char *us = NULL, *them = NULL; |
| _cleanup_close_ int netns_fd = -1; |
| const char *p; |
| siginfo_t si; |
| pid_t child; |
| |
| r = readlink_malloc("/proc/self/ns/net", &us); |
| if (r < 0) |
| return r; |
| |
| p = procfs_file_alloca(m->leader, "ns/net"); |
| r = readlink_malloc(p, &them); |
| if (r < 0) |
| return r; |
| |
| if (streq(us, them)) |
| return sd_bus_error_setf(error, BUS_ERROR_NO_PRIVATE_NETWORKING, "Machine %s does not use private networking", m->name); |
| |
| r = namespace_open(m->leader, NULL, NULL, &netns_fd, NULL, NULL); |
| if (r < 0) |
| return r; |
| |
| if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, pair) < 0) |
| return -errno; |
| |
| child = fork(); |
| if (child < 0) |
| return sd_bus_error_set_errnof(error, errno, "Failed to fork(): %m"); |
| |
| if (child == 0) { |
| _cleanup_free_ struct local_address *addresses = NULL; |
| struct local_address *a; |
| int i, n; |
| |
| pair[0] = safe_close(pair[0]); |
| |
| r = namespace_enter(-1, -1, netns_fd, -1, -1); |
| if (r < 0) |
| _exit(EXIT_FAILURE); |
| |
| n = local_addresses(NULL, 0, AF_UNSPEC, &addresses); |
| if (n < 0) |
| _exit(EXIT_FAILURE); |
| |
| for (a = addresses, i = 0; i < n; a++, i++) { |
| struct iovec iov[2] = { |
| { .iov_base = &a->family, .iov_len = sizeof(a->family) }, |
| { .iov_base = &a->address, .iov_len = FAMILY_ADDRESS_SIZE(a->family) }, |
| }; |
| |
| r = writev(pair[1], iov, 2); |
| if (r < 0) |
| _exit(EXIT_FAILURE); |
| } |
| |
| pair[1] = safe_close(pair[1]); |
| |
| _exit(EXIT_SUCCESS); |
| } |
| |
| pair[1] = safe_close(pair[1]); |
| |
| for (;;) { |
| int family; |
| ssize_t n; |
| union in_addr_union in_addr; |
| struct iovec iov[2]; |
| struct msghdr mh = { |
| .msg_iov = iov, |
| .msg_iovlen = 2, |
| }; |
| |
| iov[0] = (struct iovec) { .iov_base = &family, .iov_len = sizeof(family) }; |
| iov[1] = (struct iovec) { .iov_base = &in_addr, .iov_len = sizeof(in_addr) }; |
| |
| n = recvmsg(pair[0], &mh, 0); |
| if (n < 0) |
| return -errno; |
| if ((size_t) n < sizeof(family)) |
| break; |
| |
| r = sd_bus_message_open_container(reply, 'r', "iay"); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_append(reply, "i", family); |
| if (r < 0) |
| return r; |
| |
| switch (family) { |
| |
| case AF_INET: |
| if (n != sizeof(struct in_addr) + sizeof(family)) |
| return -EIO; |
| |
| r = sd_bus_message_append_array(reply, 'y', &in_addr.in, sizeof(in_addr.in)); |
| break; |
| |
| case AF_INET6: |
| if (n != sizeof(struct in6_addr) + sizeof(family)) |
| return -EIO; |
| |
| r = sd_bus_message_append_array(reply, 'y', &in_addr.in6, sizeof(in_addr.in6)); |
| break; |
| } |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_close_container(reply); |
| if (r < 0) |
| return r; |
| } |
| |
| r = wait_for_terminate(child, &si); |
| if (r < 0) |
| return sd_bus_error_set_errnof(error, r, "Failed to wait for child: %m"); |
| if (si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Child died abnormally."); |
| break; |
| } |
| |
| default: |
| return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Requesting IP address data is only supported on container machines."); |
| } |
| |
| r = sd_bus_message_close_container(reply); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_send(NULL, reply, NULL); |
| } |
| |
| int bus_machine_method_get_os_release(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
| _cleanup_strv_free_ char **l = NULL; |
| Machine *m = userdata; |
| char **k, **v; |
| int r; |
| |
| assert(message); |
| assert(m); |
| |
| switch (m->class) { |
| |
| case MACHINE_HOST: |
| r = load_env_file_pairs(NULL, "/etc/os-release", NULL, &l); |
| if (r < 0) |
| return r; |
| |
| break; |
| |
| case MACHINE_CONTAINER: { |
| _cleanup_close_ int mntns_fd = -1, root_fd = -1; |
| _cleanup_close_pair_ int pair[2] = { -1, -1 }; |
| _cleanup_fclose_ FILE *f = NULL; |
| siginfo_t si; |
| pid_t child; |
| |
| r = namespace_open(m->leader, NULL, &mntns_fd, NULL, NULL, &root_fd); |
| if (r < 0) |
| return r; |
| |
| if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, pair) < 0) |
| return -errno; |
| |
| child = fork(); |
| if (child < 0) |
| return sd_bus_error_set_errnof(error, errno, "Failed to fork(): %m"); |
| |
| if (child == 0) { |
| _cleanup_close_ int fd = -1; |
| |
| pair[0] = safe_close(pair[0]); |
| |
| r = namespace_enter(-1, mntns_fd, -1, -1, root_fd); |
| if (r < 0) |
| _exit(EXIT_FAILURE); |
| |
| fd = open("/etc/os-release", O_RDONLY|O_CLOEXEC); |
| if (fd < 0) { |
| fd = open("/usr/lib/os-release", O_RDONLY|O_CLOEXEC); |
| if (fd < 0) |
| _exit(EXIT_FAILURE); |
| } |
| |
| r = copy_bytes(fd, pair[1], (uint64_t) -1, false); |
| if (r < 0) |
| _exit(EXIT_FAILURE); |
| |
| _exit(EXIT_SUCCESS); |
| } |
| |
| pair[1] = safe_close(pair[1]); |
| |
| f = fdopen(pair[0], "re"); |
| if (!f) |
| return -errno; |
| |
| pair[0] = -1; |
| |
| r = load_env_file_pairs(f, "/etc/os-release", NULL, &l); |
| if (r < 0) |
| return r; |
| |
| r = wait_for_terminate(child, &si); |
| if (r < 0) |
| return sd_bus_error_set_errnof(error, r, "Failed to wait for child: %m"); |
| if (si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Child died abnormally."); |
| |
| break; |
| } |
| |
| default: |
| return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Requesting OS release data is only supported on container machines."); |
| } |
| |
| r = sd_bus_message_new_method_return(message, &reply); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_open_container(reply, 'a', "{ss}"); |
| if (r < 0) |
| return r; |
| |
| STRV_FOREACH_PAIR(k, v, l) { |
| r = sd_bus_message_append(reply, "{ss}", *k, *v); |
| if (r < 0) |
| return r; |
| } |
| |
| r = sd_bus_message_close_container(reply); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_send(NULL, reply, NULL); |
| } |
| |
| int bus_machine_method_open_pty(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
| _cleanup_free_ char *pty_name = NULL; |
| _cleanup_close_ int master = -1; |
| Machine *m = userdata; |
| int r; |
| |
| assert(message); |
| assert(m); |
| |
| r = bus_verify_polkit_async( |
| message, |
| CAP_SYS_ADMIN, |
| m->class == MACHINE_HOST ? "org.freedesktop.machine1.host-open-pty" : "org.freedesktop.machine1.open-pty", |
| NULL, |
| false, |
| UID_INVALID, |
| &m->manager->polkit_registry, |
| error); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* Will call us back */ |
| |
| master = machine_openpt(m, O_RDWR|O_NOCTTY|O_CLOEXEC); |
| if (master < 0) |
| return master; |
| |
| r = ptsname_namespace(master, &pty_name); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_new_method_return(message, &reply); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_append(reply, "hs", master, pty_name); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_send(NULL, reply, NULL); |
| } |
| |
| static int container_bus_new(Machine *m, sd_bus_error *error, sd_bus **ret) { |
| int r; |
| |
| assert(m); |
| assert(ret); |
| |
| switch (m->class) { |
| |
| case MACHINE_HOST: |
| *ret = NULL; |
| break; |
| |
| case MACHINE_CONTAINER: { |
| _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; |
| char *address; |
| |
| r = sd_bus_new(&bus); |
| if (r < 0) |
| return r; |
| |
| if (asprintf(&address, "x-machine-kernel:pid=%1$" PID_PRI ";x-machine-unix:pid=%1$" PID_PRI, m->leader) < 0) |
| return -ENOMEM; |
| |
| bus->address = address; |
| bus->bus_client = true; |
| bus->trusted = false; |
| bus->is_system = true; |
| |
| r = sd_bus_start(bus); |
| if (r == -ENOENT) |
| return sd_bus_error_set_errnof(error, r, "There is no system bus in container %s.", m->name); |
| if (r < 0) |
| return r; |
| |
| *ret = bus; |
| bus = NULL; |
| break; |
| } |
| |
| default: |
| return -EOPNOTSUPP; |
| } |
| |
| return 0; |
| } |
| |
| int bus_machine_method_open_login(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
| _cleanup_free_ char *pty_name = NULL; |
| _cleanup_(sd_bus_flush_close_unrefp) sd_bus *allocated_bus = NULL; |
| _cleanup_close_ int master = -1; |
| sd_bus *container_bus = NULL; |
| Machine *m = userdata; |
| const char *p, *getty; |
| int r; |
| |
| assert(message); |
| assert(m); |
| |
| r = bus_verify_polkit_async( |
| message, |
| CAP_SYS_ADMIN, |
| m->class == MACHINE_HOST ? "org.freedesktop.machine1.host-login" : "org.freedesktop.machine1.login", |
| NULL, |
| false, |
| UID_INVALID, |
| &m->manager->polkit_registry, |
| error); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* Will call us back */ |
| |
| master = machine_openpt(m, O_RDWR|O_NOCTTY|O_CLOEXEC); |
| if (master < 0) |
| return master; |
| |
| r = ptsname_namespace(master, &pty_name); |
| if (r < 0) |
| return r; |
| |
| p = path_startswith(pty_name, "/dev/pts/"); |
| if (!p) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "PTS name %s is invalid", pty_name); |
| |
| r = container_bus_new(m, error, &allocated_bus); |
| if (r < 0) |
| return r; |
| |
| container_bus = allocated_bus ?: m->manager->bus; |
| |
| getty = strjoina("container-getty@", p, ".service"); |
| |
| r = sd_bus_call_method( |
| container_bus, |
| "org.freedesktop.systemd1", |
| "/org/freedesktop/systemd1", |
| "org.freedesktop.systemd1.Manager", |
| "StartUnit", |
| error, NULL, |
| "ss", getty, "replace"); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_new_method_return(message, &reply); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_append(reply, "hs", master, pty_name); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_send(NULL, reply, NULL); |
| } |
| |
| int bus_machine_method_open_shell(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL, *tm = NULL; |
| _cleanup_free_ char *pty_name = NULL; |
| _cleanup_(sd_bus_flush_close_unrefp) sd_bus *allocated_bus = NULL; |
| sd_bus *container_bus = NULL; |
| _cleanup_close_ int master = -1, slave = -1; |
| _cleanup_strv_free_ char **env = NULL, **args = NULL; |
| Machine *m = userdata; |
| const char *p, *unit, *user, *path, *description, *utmp_id; |
| int r; |
| |
| assert(message); |
| assert(m); |
| |
| r = sd_bus_message_read(message, "ss", &user, &path); |
| if (r < 0) |
| return r; |
| user = empty_to_null(user); |
| if (isempty(path)) |
| path = "/bin/sh"; |
| if (!path_is_absolute(path)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified path '%s' is not absolute", path); |
| |
| r = sd_bus_message_read_strv(message, &args); |
| if (r < 0) |
| return r; |
| if (strv_isempty(args)) { |
| args = strv_free(args); |
| |
| args = strv_new(path, NULL); |
| if (!args) |
| return -ENOMEM; |
| |
| args[0][0] = '-'; /* Tell /bin/sh that this shall be a login shell */ |
| } |
| |
| r = sd_bus_message_read_strv(message, &env); |
| if (r < 0) |
| return r; |
| if (!strv_env_is_valid(env)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments"); |
| |
| r = bus_verify_polkit_async( |
| message, |
| CAP_SYS_ADMIN, |
| m->class == MACHINE_HOST ? "org.freedesktop.machine1.host-shell" : "org.freedesktop.machine1.shell", |
| NULL, |
| false, |
| UID_INVALID, |
| &m->manager->polkit_registry, |
| error); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* Will call us back */ |
| |
| master = machine_openpt(m, O_RDWR|O_NOCTTY|O_CLOEXEC); |
| if (master < 0) |
| return master; |
| |
| r = ptsname_namespace(master, &pty_name); |
| if (r < 0) |
| return r; |
| |
| p = path_startswith(pty_name, "/dev/pts/"); |
| assert(p); |
| |
| slave = machine_open_terminal(m, pty_name, O_RDWR|O_NOCTTY|O_CLOEXEC); |
| if (slave < 0) |
| return slave; |
| |
| utmp_id = path_startswith(pty_name, "/dev/"); |
| assert(utmp_id); |
| |
| r = container_bus_new(m, error, &allocated_bus); |
| if (r < 0) |
| return r; |
| |
| container_bus = allocated_bus ?: m->manager->bus; |
| |
| r = sd_bus_message_new_method_call( |
| container_bus, |
| &tm, |
| "org.freedesktop.systemd1", |
| "/org/freedesktop/systemd1", |
| "org.freedesktop.systemd1.Manager", |
| "StartTransientUnit"); |
| if (r < 0) |
| return r; |
| |
| /* Name and mode */ |
| unit = strjoina("container-shell@", p, ".service"); |
| r = sd_bus_message_append(tm, "ss", unit, "fail"); |
| if (r < 0) |
| return r; |
| |
| /* Properties */ |
| r = sd_bus_message_open_container(tm, 'a', "(sv)"); |
| if (r < 0) |
| return r; |
| |
| description = strjoina("Shell for User ", isempty(user) ? "root" : user); |
| r = sd_bus_message_append(tm, |
| "(sv)(sv)(sv)(sv)(sv)(sv)(sv)(sv)(sv)(sv)(sv)(sv)", |
| "Description", "s", description, |
| "StandardInputFileDescriptor", "h", slave, |
| "StandardOutputFileDescriptor", "h", slave, |
| "StandardErrorFileDescriptor", "h", slave, |
| "SendSIGHUP", "b", true, |
| "IgnoreSIGPIPE", "b", false, |
| "KillMode", "s", "mixed", |
| "TTYReset", "b", true, |
| "UtmpIdentifier", "s", utmp_id, |
| "UtmpMode", "s", "user", |
| "PAMName", "s", "login", |
| "WorkingDirectory", "s", "-~"); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_append(tm, "(sv)", "User", "s", isempty(user) ? "root" : user); |
| if (r < 0) |
| return r; |
| |
| if (!strv_isempty(env)) { |
| r = sd_bus_message_open_container(tm, 'r', "sv"); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_append(tm, "s", "Environment"); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_open_container(tm, 'v', "as"); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_append_strv(tm, env); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_close_container(tm); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_close_container(tm); |
| if (r < 0) |
| return r; |
| } |
| |
| /* Exec container */ |
| r = sd_bus_message_open_container(tm, 'r', "sv"); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_append(tm, "s", "ExecStart"); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_open_container(tm, 'v', "a(sasb)"); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_open_container(tm, 'a', "(sasb)"); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_open_container(tm, 'r', "sasb"); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_append(tm, "s", path); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_append_strv(tm, args); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_append(tm, "b", true); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_close_container(tm); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_close_container(tm); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_close_container(tm); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_close_container(tm); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_close_container(tm); |
| if (r < 0) |
| return r; |
| |
| /* Auxiliary units */ |
| r = sd_bus_message_append(tm, "a(sa(sv))", 0); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_call(container_bus, tm, 0, error, NULL); |
| if (r < 0) |
| return r; |
| |
| slave = safe_close(slave); |
| |
| r = sd_bus_message_new_method_return(message, &reply); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_append(reply, "hs", master, pty_name); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_send(NULL, reply, NULL); |
| } |
| |
| int bus_machine_method_bind_mount(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| _cleanup_close_pair_ int errno_pipe_fd[2] = { -1, -1 }; |
| char mount_slave[] = "/tmp/propagate.XXXXXX", *mount_tmp, *mount_outside, *p; |
| bool mount_slave_created = false, mount_slave_mounted = false, |
| mount_tmp_created = false, mount_tmp_mounted = false, |
| mount_outside_created = false, mount_outside_mounted = false; |
| const char *dest, *src; |
| Machine *m = userdata; |
| int read_only, make_directory; |
| pid_t child; |
| siginfo_t si; |
| int r; |
| |
| assert(message); |
| assert(m); |
| |
| if (m->class != MACHINE_CONTAINER) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Bind mounting is only supported on container machines."); |
| |
| r = sd_bus_message_read(message, "ssbb", &src, &dest, &read_only, &make_directory); |
| if (r < 0) |
| return r; |
| |
| if (!path_is_absolute(src) || !path_is_safe(src)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Source path must be absolute and not contain ../."); |
| |
| if (isempty(dest)) |
| dest = src; |
| else if (!path_is_absolute(dest) || !path_is_safe(dest)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Destination path must be absolute and not contain ../."); |
| |
| r = bus_verify_polkit_async( |
| message, |
| CAP_SYS_ADMIN, |
| "org.freedesktop.machine1.manage-machines", |
| NULL, |
| false, |
| UID_INVALID, |
| &m->manager->polkit_registry, |
| error); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* Will call us back */ |
| |
| /* One day, when bind mounting /proc/self/fd/n works across |
| * namespace boundaries we should rework this logic to make |
| * use of it... */ |
| |
| p = strjoina("/run/systemd/nspawn/propagate/", m->name, "/"); |
| if (laccess(p, F_OK) < 0) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Container does not allow propagation of mount points."); |
| |
| /* Our goal is to install a new bind mount into the container, |
| possibly read-only. This is irritatingly complex |
| unfortunately, currently. |
| |
| First, we start by creating a private playground in /tmp, |
| that we can mount MS_SLAVE. (Which is necessary, since |
| MS_MOVE cannot be applied to mounts with MS_SHARED parent |
| mounts.) */ |
| |
| if (!mkdtemp(mount_slave)) |
| return sd_bus_error_set_errnof(error, errno, "Failed to create playground %s: %m", mount_slave); |
| |
| mount_slave_created = true; |
| |
| if (mount(mount_slave, mount_slave, NULL, MS_BIND, NULL) < 0) { |
| r = sd_bus_error_set_errnof(error, errno, "Failed to make bind mount %s: %m", mount_slave); |
| goto finish; |
| } |
| |
| mount_slave_mounted = true; |
| |
| if (mount(NULL, mount_slave, NULL, MS_SLAVE, NULL) < 0) { |
| r = sd_bus_error_set_errnof(error, errno, "Failed to remount slave %s: %m", mount_slave); |
| goto finish; |
| } |
| |
| /* Second, we mount the source directory to a directory inside |
| of our MS_SLAVE playground. */ |
| mount_tmp = strjoina(mount_slave, "/mount"); |
| if (mkdir(mount_tmp, 0700) < 0) { |
| r = sd_bus_error_set_errnof(error, errno, "Failed to create temporary mount point %s: %m", mount_tmp); |
| goto finish; |
| } |
| |
| mount_tmp_created = true; |
| |
| if (mount(src, mount_tmp, NULL, MS_BIND, NULL) < 0) { |
| r = sd_bus_error_set_errnof(error, errno, "Failed to overmount %s: %m", mount_tmp); |
| goto finish; |
| } |
| |
| mount_tmp_mounted = true; |
| |
| /* Third, we remount the new bind mount read-only if requested. */ |
| if (read_only) |
| if (mount(NULL, mount_tmp, NULL, MS_BIND|MS_REMOUNT|MS_RDONLY, NULL) < 0) { |
| r = sd_bus_error_set_errnof(error, errno, "Failed to remount read-only %s: %m", mount_tmp); |
| goto finish; |
| } |
| |
| /* Fourth, we move the new bind mount into the propagation |
| * directory. This way it will appear there read-only |
| * right-away. */ |
| |
| mount_outside = strjoina("/run/systemd/nspawn/propagate/", m->name, "/XXXXXX"); |
| if (!mkdtemp(mount_outside)) { |
| r = sd_bus_error_set_errnof(error, errno, "Cannot create propagation directory %s: %m", mount_outside); |
| goto finish; |
| } |
| |
| mount_outside_created = true; |
| |
| if (mount(mount_tmp, mount_outside, NULL, MS_MOVE, NULL) < 0) { |
| r = sd_bus_error_set_errnof(error, errno, "Failed to move %s to %s: %m", mount_tmp, mount_outside); |
| goto finish; |
| } |
| |
| mount_outside_mounted = true; |
| mount_tmp_mounted = false; |
| |
| (void) rmdir(mount_tmp); |
| mount_tmp_created = false; |
| |
| (void) umount(mount_slave); |
| mount_slave_mounted = false; |
| |
| (void) rmdir(mount_slave); |
| mount_slave_created = false; |
| |
| if (pipe2(errno_pipe_fd, O_CLOEXEC|O_NONBLOCK) < 0) { |
| r = sd_bus_error_set_errnof(error, errno, "Failed to create pipe: %m"); |
| goto finish; |
| } |
| |
| child = fork(); |
| if (child < 0) { |
| r = sd_bus_error_set_errnof(error, errno, "Failed to fork(): %m"); |
| goto finish; |
| } |
| |
| if (child == 0) { |
| const char *mount_inside; |
| int mntfd; |
| const char *q; |
| |
| errno_pipe_fd[0] = safe_close(errno_pipe_fd[0]); |
| |
| q = procfs_file_alloca(m->leader, "ns/mnt"); |
| mntfd = open(q, O_RDONLY|O_NOCTTY|O_CLOEXEC); |
| if (mntfd < 0) { |
| r = log_error_errno(errno, "Failed to open mount namespace of leader: %m"); |
| goto child_fail; |
| } |
| |
| if (setns(mntfd, CLONE_NEWNS) < 0) { |
| r = log_error_errno(errno, "Failed to join namespace of leader: %m"); |
| goto child_fail; |
| } |
| |
| if (make_directory) |
| (void) mkdir_p(dest, 0755); |
| |
| /* Fifth, move the mount to the right place inside */ |
| mount_inside = strjoina("/run/systemd/nspawn/incoming/", basename(mount_outside)); |
| if (mount(mount_inside, dest, NULL, MS_MOVE, NULL) < 0) { |
| r = log_error_errno(errno, "Failed to mount: %m"); |
| goto child_fail; |
| } |
| |
| _exit(EXIT_SUCCESS); |
| |
| child_fail: |
| (void) write(errno_pipe_fd[1], &r, sizeof(r)); |
| errno_pipe_fd[1] = safe_close(errno_pipe_fd[1]); |
| |
| _exit(EXIT_FAILURE); |
| } |
| |
| errno_pipe_fd[1] = safe_close(errno_pipe_fd[1]); |
| |
| r = wait_for_terminate(child, &si); |
| if (r < 0) { |
| r = sd_bus_error_set_errnof(error, r, "Failed to wait for child: %m"); |
| goto finish; |
| } |
| if (si.si_code != CLD_EXITED) { |
| r = sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Child died abnormally."); |
| goto finish; |
| } |
| if (si.si_status != EXIT_SUCCESS) { |
| |
| if (read(errno_pipe_fd[0], &r, sizeof(r)) == sizeof(r)) |
| r = sd_bus_error_set_errnof(error, r, "Failed to mount: %m"); |
| else |
| r = sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Child failed."); |
| goto finish; |
| } |
| |
| r = sd_bus_reply_method_return(message, NULL); |
| |
| finish: |
| if (mount_outside_mounted) |
| umount(mount_outside); |
| if (mount_outside_created) |
| rmdir(mount_outside); |
| |
| if (mount_tmp_mounted) |
| umount(mount_tmp); |
| if (mount_tmp_created) |
| rmdir(mount_tmp); |
| |
| if (mount_slave_mounted) |
| umount(mount_slave); |
| if (mount_slave_created) |
| rmdir(mount_slave); |
| |
| return r; |
| } |
| |
| int bus_machine_method_copy(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| const char *src, *dest, *host_path, *container_path, *host_basename, *host_dirname, *container_basename, *container_dirname; |
| _cleanup_close_pair_ int errno_pipe_fd[2] = { -1, -1 }; |
| _cleanup_close_ int hostfd = -1; |
| Machine *m = userdata; |
| bool copy_from; |
| pid_t child; |
| char *t; |
| int r; |
| |
| assert(message); |
| assert(m); |
| |
| if (m->manager->n_operations >= OPERATIONS_MAX) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Too many ongoing copies."); |
| |
| if (m->class != MACHINE_CONTAINER) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Copying files is only supported on container machines."); |
| |
| r = sd_bus_message_read(message, "ss", &src, &dest); |
| if (r < 0) |
| return r; |
| |
| if (!path_is_absolute(src)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Source path must be absolute."); |
| |
| if (isempty(dest)) |
| dest = src; |
| else if (!path_is_absolute(dest)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Destination path must be absolute."); |
| |
| r = bus_verify_polkit_async( |
| message, |
| CAP_SYS_ADMIN, |
| "org.freedesktop.machine1.manage-machines", |
| NULL, |
| false, |
| UID_INVALID, |
| &m->manager->polkit_registry, |
| error); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* Will call us back */ |
| |
| copy_from = strstr(sd_bus_message_get_member(message), "CopyFrom"); |
| |
| if (copy_from) { |
| container_path = src; |
| host_path = dest; |
| } else { |
| host_path = src; |
| container_path = dest; |
| } |
| |
| host_basename = basename(host_path); |
| t = strdupa(host_path); |
| host_dirname = dirname(t); |
| |
| container_basename = basename(container_path); |
| t = strdupa(container_path); |
| container_dirname = dirname(t); |
| |
| hostfd = open(host_dirname, O_CLOEXEC|O_RDONLY|O_NOCTTY|O_DIRECTORY); |
| if (hostfd < 0) |
| return sd_bus_error_set_errnof(error, errno, "Failed to open host directory %s: %m", host_dirname); |
| |
| if (pipe2(errno_pipe_fd, O_CLOEXEC|O_NONBLOCK) < 0) |
| return sd_bus_error_set_errnof(error, errno, "Failed to create pipe: %m"); |
| |
| child = fork(); |
| if (child < 0) |
| return sd_bus_error_set_errnof(error, errno, "Failed to fork(): %m"); |
| |
| if (child == 0) { |
| int containerfd; |
| const char *q; |
| int mntfd; |
| |
| errno_pipe_fd[0] = safe_close(errno_pipe_fd[0]); |
| |
| q = procfs_file_alloca(m->leader, "ns/mnt"); |
| mntfd = open(q, O_RDONLY|O_NOCTTY|O_CLOEXEC); |
| if (mntfd < 0) { |
| r = log_error_errno(errno, "Failed to open mount namespace of leader: %m"); |
| goto child_fail; |
| } |
| |
| if (setns(mntfd, CLONE_NEWNS) < 0) { |
| r = log_error_errno(errno, "Failed to join namespace of leader: %m"); |
| goto child_fail; |
| } |
| |
| containerfd = open(container_dirname, O_CLOEXEC|O_RDONLY|O_NOCTTY|O_DIRECTORY); |
| if (containerfd < 0) { |
| r = log_error_errno(errno, "Failed top open destination directory: %m"); |
| goto child_fail; |
| } |
| |
| if (copy_from) |
| r = copy_tree_at(containerfd, container_basename, hostfd, host_basename, true); |
| else |
| r = copy_tree_at(hostfd, host_basename, containerfd, container_basename, true); |
| |
| hostfd = safe_close(hostfd); |
| containerfd = safe_close(containerfd); |
| |
| if (r < 0) { |
| r = log_error_errno(r, "Failed to copy tree: %m"); |
| goto child_fail; |
| } |
| |
| _exit(EXIT_SUCCESS); |
| |
| child_fail: |
| (void) write(errno_pipe_fd[1], &r, sizeof(r)); |
| _exit(EXIT_FAILURE); |
| } |
| |
| errno_pipe_fd[1] = safe_close(errno_pipe_fd[1]); |
| |
| /* Copying might take a while, hence install a watch on the child, and return */ |
| |
| r = operation_new(m->manager, m, child, message, errno_pipe_fd[0], NULL); |
| if (r < 0) { |
| (void) sigkill_wait(child); |
| return r; |
| } |
| errno_pipe_fd[0] = -1; |
| |
| return 1; |
| } |
| |
| int bus_machine_method_open_root_directory(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| _cleanup_close_ int fd = -1; |
| Machine *m = userdata; |
| int r; |
| |
| assert(message); |
| assert(m); |
| |
| r = bus_verify_polkit_async( |
| message, |
| CAP_SYS_ADMIN, |
| "org.freedesktop.machine1.manage-machines", |
| NULL, |
| false, |
| UID_INVALID, |
| &m->manager->polkit_registry, |
| error); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* Will call us back */ |
| |
| switch (m->class) { |
| |
| case MACHINE_HOST: |
| fd = open("/", O_RDONLY|O_CLOEXEC|O_DIRECTORY); |
| if (fd < 0) |
| return -errno; |
| |
| break; |
| |
| case MACHINE_CONTAINER: { |
| _cleanup_close_ int mntns_fd = -1, root_fd = -1; |
| _cleanup_close_pair_ int pair[2] = { -1, -1 }; |
| siginfo_t si; |
| pid_t child; |
| |
| r = namespace_open(m->leader, NULL, &mntns_fd, NULL, NULL, &root_fd); |
| if (r < 0) |
| return r; |
| |
| if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) < 0) |
| return -errno; |
| |
| child = fork(); |
| if (child < 0) |
| return sd_bus_error_set_errnof(error, errno, "Failed to fork(): %m"); |
| |
| if (child == 0) { |
| _cleanup_close_ int dfd = -1; |
| |
| pair[0] = safe_close(pair[0]); |
| |
| r = namespace_enter(-1, mntns_fd, -1, -1, root_fd); |
| if (r < 0) |
| _exit(EXIT_FAILURE); |
| |
| dfd = open("/", O_RDONLY|O_CLOEXEC|O_DIRECTORY); |
| if (dfd < 0) |
| _exit(EXIT_FAILURE); |
| |
| r = send_one_fd(pair[1], dfd, 0); |
| dfd = safe_close(dfd); |
| if (r < 0) |
| _exit(EXIT_FAILURE); |
| |
| _exit(EXIT_SUCCESS); |
| } |
| |
| pair[1] = safe_close(pair[1]); |
| |
| r = wait_for_terminate(child, &si); |
| if (r < 0) |
| return sd_bus_error_set_errnof(error, r, "Failed to wait for child: %m"); |
| if (si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Child died abnormally."); |
| |
| fd = receive_one_fd(pair[0], MSG_DONTWAIT); |
| if (fd < 0) |
| return fd; |
| |
| break; |
| } |
| |
| default: |
| return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Opening the root directory is only supported on container machines."); |
| } |
| |
| return sd_bus_reply_method_return(message, "h", fd); |
| } |
| |
| const sd_bus_vtable machine_vtable[] = { |
| SD_BUS_VTABLE_START(0), |
| SD_BUS_PROPERTY("Name", "s", NULL, offsetof(Machine, name), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Id", "ay", property_get_id, 0, SD_BUS_VTABLE_PROPERTY_CONST), |
| BUS_PROPERTY_DUAL_TIMESTAMP("Timestamp", offsetof(Machine, timestamp), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Service", "s", NULL, offsetof(Machine, service), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Unit", "s", NULL, offsetof(Machine, unit), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Scope", "s", NULL, offsetof(Machine, unit), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN), |
| SD_BUS_PROPERTY("Leader", "u", NULL, offsetof(Machine, leader), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Class", "s", property_get_class, offsetof(Machine, class), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("RootDirectory", "s", NULL, offsetof(Machine, root_directory), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("NetworkInterfaces", "ai", property_get_netif, 0, SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0), |
| SD_BUS_METHOD("Terminate", NULL, NULL, bus_machine_method_terminate, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("Kill", "si", NULL, bus_machine_method_kill, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("GetAddresses", NULL, "a(iay)", bus_machine_method_get_addresses, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("GetOSRelease", NULL, "a{ss}", bus_machine_method_get_os_release, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("OpenPTY", NULL, "hs", bus_machine_method_open_pty, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("OpenLogin", NULL, "hs", bus_machine_method_open_login, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("OpenShell", "ssasas", "hs", bus_machine_method_open_shell, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("BindMount", "ssbb", NULL, bus_machine_method_bind_mount, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("CopyFrom", "ss", NULL, bus_machine_method_copy, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("CopyTo", "ss", NULL, bus_machine_method_copy, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("OpenRootDirectory", NULL, "h", bus_machine_method_open_root_directory, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_VTABLE_END |
| }; |
| |
| int machine_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { |
| Manager *m = userdata; |
| Machine *machine; |
| int r; |
| |
| assert(bus); |
| assert(path); |
| assert(interface); |
| assert(found); |
| assert(m); |
| |
| if (streq(path, "/org/freedesktop/machine1/machine/self")) { |
| _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
| sd_bus_message *message; |
| pid_t pid; |
| |
| message = sd_bus_get_current_message(bus); |
| if (!message) |
| return 0; |
| |
| 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 0; |
| } else { |
| _cleanup_free_ char *e = NULL; |
| const char *p; |
| |
| p = startswith(path, "/org/freedesktop/machine1/machine/"); |
| if (!p) |
| return 0; |
| |
| e = bus_label_unescape(p); |
| if (!e) |
| return -ENOMEM; |
| |
| machine = hashmap_get(m->machines, e); |
| if (!machine) |
| return 0; |
| } |
| |
| *found = machine; |
| return 1; |
| } |
| |
| char *machine_bus_path(Machine *m) { |
| _cleanup_free_ char *e = NULL; |
| |
| assert(m); |
| |
| e = bus_label_escape(m->name); |
| if (!e) |
| return NULL; |
| |
| return strappend("/org/freedesktop/machine1/machine/", e); |
| } |
| |
| int machine_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { |
| _cleanup_strv_free_ char **l = NULL; |
| Machine *machine = NULL; |
| Manager *m = userdata; |
| Iterator i; |
| int r; |
| |
| assert(bus); |
| assert(path); |
| assert(nodes); |
| |
| HASHMAP_FOREACH(machine, m->machines, i) { |
| char *p; |
| |
| p = machine_bus_path(machine); |
| if (!p) |
| return -ENOMEM; |
| |
| r = strv_consume(&l, p); |
| if (r < 0) |
| return r; |
| } |
| |
| *nodes = l; |
| l = NULL; |
| |
| return 1; |
| } |
| |
| int machine_send_signal(Machine *m, bool new_machine) { |
| _cleanup_free_ char *p = NULL; |
| |
| assert(m); |
| |
| p = machine_bus_path(m); |
| if (!p) |
| return -ENOMEM; |
| |
| return sd_bus_emit_signal( |
| m->manager->bus, |
| "/org/freedesktop/machine1", |
| "org.freedesktop.machine1.Manager", |
| new_machine ? "MachineNew" : "MachineRemoved", |
| "so", m->name, p); |
| } |
| |
| int machine_send_create_reply(Machine *m, sd_bus_error *error) { |
| _cleanup_(sd_bus_message_unrefp) sd_bus_message *c = NULL; |
| _cleanup_free_ char *p = NULL; |
| |
| assert(m); |
| |
| if (!m->create_message) |
| return 0; |
| |
| c = m->create_message; |
| m->create_message = NULL; |
| |
| if (error) |
| return sd_bus_reply_method_error(c, error); |
| |
| /* Update the machine state file before we notify the client |
| * about the result. */ |
| machine_save(m); |
| |
| p = machine_bus_path(m); |
| if (!p) |
| return -ENOMEM; |
| |
| return sd_bus_reply_method_return(c, "o", p); |
| } |