+++ /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 <sys/mount.h>
-
-/* When we include libgen.h because we need dirname() we immediately
- * undefine basename() since libgen.h defines it as a macro to the XDG
- * version which is really broken. */
-#include <libgen.h>
-#undef basename
-
-#include "bus-util.h"
-#include "bus-label.h"
-#include "strv.h"
-#include "bus-common-errors.h"
-#include "copy.h"
-#include "fileio.h"
-#include "in-addr-util.h"
-#include "local-addresses.h"
-#include "path-util.h"
-#include "mkdir.h"
-#include "bus-internal.h"
-#include "machine.h"
-#include "machine-dbus.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;
- int r;
-
- assert(bus);
- assert(reply);
- assert(m);
-
- r = sd_bus_message_append_array(reply, 'y', &m->id, 16);
- if (r < 0)
- return r;
-
- return 1;
-}
-
-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;
- int r;
-
- assert(bus);
- assert(reply);
- assert(m);
-
- assert_cc(sizeof(int) == sizeof(int32_t));
-
- r = sd_bus_message_append_array(reply, 'i', m->netif, m->n_netif * sizeof(int));
- if (r < 0)
- return r;
-
- return 1;
-}
-
-static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_class, machine_class, MachineClass);
-
-int bus_machine_method_terminate(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
- Machine *m = userdata;
- int r;
-
- assert(bus);
- assert(message);
- assert(m);
-
- r = bus_verify_polkit_async(
- message,
- CAP_KILL,
- "org.freedesktop.machine1.manage-machines",
- 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 *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
- Machine *m = userdata;
- const char *swho;
- int32_t signo;
- KillWho who;
- int r;
-
- assert(bus);
- 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 (signo <= 0 || signo >= _NSIG)
- 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",
- 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 *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- _cleanup_close_pair_ int pair[2] = { -1, -1 };
- _cleanup_free_ char *us = NULL, *them = NULL;
- _cleanup_close_ int netns_fd = -1;
- Machine *m = userdata;
- const char *p;
- siginfo_t si;
- pid_t child;
- int r;
-
- assert(bus);
- assert(message);
- assert(m);
-
- if (m->class != MACHINE_CONTAINER)
- return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Requesting IP address data is only supported on container machines.");
-
- 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);
- 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);
- 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]);
-
- 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;
-
- 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 client: %m");
- if (si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS)
- return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Client died abnormally.");
-
- r = sd_bus_message_close_container(reply);
- if (r < 0)
- return r;
-
- return sd_bus_send(bus, reply, NULL);
-}
-
-int bus_machine_method_get_os_release(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- _cleanup_close_ int mntns_fd = -1, root_fd = -1;
- _cleanup_close_pair_ int pair[2] = { -1, -1 };
- _cleanup_strv_free_ char **l = NULL;
- _cleanup_fclose_ FILE *f = NULL;
- Machine *m = userdata;
- char **k, **v;
- siginfo_t si;
- pid_t child;
- int r;
-
- assert(bus);
- assert(message);
- assert(m);
-
- if (m->class != MACHINE_CONTAINER)
- return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Requesting OS release data is only supported on container machines.");
-
- r = namespace_open(m->leader, NULL, &mntns_fd, 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, 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], (off_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 client: %m");
- if (si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS)
- return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Client died abnormally.");
-
- 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(bus, reply, NULL);
-}
-
-int bus_machine_method_open_pty(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- _cleanup_free_ char *pty_name = NULL;
- _cleanup_close_ int master = -1;
- Machine *m = userdata;
- int r;
-
- assert(bus);
- assert(message);
- assert(m);
-
- if (m->class != MACHINE_CONTAINER)
- return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Opening pseudo TTYs is only supported on container machines.");
-
- master = openpt_in_namespace(m->leader, O_RDWR|O_NOCTTY|O_CLOEXEC);
- if (master < 0)
- return master;
-
- r = ptsname_malloc(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(bus, reply, NULL);
-}
-
-int bus_machine_method_open_login(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- _cleanup_free_ char *pty_name = NULL, *getty = NULL;
- _cleanup_bus_unref_ sd_bus *container_bus = NULL;
- _cleanup_close_ int master = -1;
- Machine *m = userdata;
- const char *p;
- char *address;
- int r;
-
- if (m->class != MACHINE_CONTAINER)
- return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Opening logins is only supported on container machines.");
-
- r = bus_verify_polkit_async(
- message,
- CAP_SYS_ADMIN,
- "org.freedesktop.machine1.login",
- false,
- UID_INVALID,
- &m->manager->polkit_registry,
- error);
- if (r < 0)
- return r;
- if (r == 0)
- return 1; /* Will call us back */
-
- master = openpt_in_namespace(m->leader, O_RDWR|O_NOCTTY|O_CLOEXEC);
- if (master < 0)
- return master;
-
- r = ptsname_malloc(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);
-
- if (unlockpt(master) < 0)
- return -errno;
-
- r = sd_bus_new(&container_bus);
- if (r < 0)
- return r;
-
-#ifdef ENABLE_KDBUS
-# define ADDRESS_FMT "x-machine-kernel:pid=%1$" PID_PRI ";x-machine-unix:pid=%1$" PID_PRI
-#else
-# define ADDRESS_FMT "x-machine-unix:pid=%1$" PID_PRI
-#endif
- if (asprintf(&address, ADDRESS_FMT, m->leader) < 0)
- return log_oom();
-
- container_bus->address = address;
- container_bus->bus_client = true;
- container_bus->trusted = false;
- container_bus->is_system = true;
-
- r = sd_bus_start(container_bus);
- if (r < 0)
- return r;
-
- getty = strjoin("container-getty@", p, ".service", NULL);
- if (!getty)
- return log_oom();
-
- 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;
-
- container_bus = sd_bus_unref(container_bus);
-
- 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(bus, reply, NULL);
-}
-
-int bus_machine_method_bind_mount(sd_bus *bus, 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;
-
- 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",
- 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_MOUNT 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 client: %m");
- goto finish;
- }
- if (si.si_code != CLD_EXITED) {
- r = sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Client 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, "Client 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;
-}
-
-static int machine_operation_done(sd_event_source *s, const siginfo_t *si, void *userdata) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- MachineOperation *o = userdata;
- int r;
-
- assert(o);
- assert(si);
-
- o->pid = 0;
-
- if (si->si_code != CLD_EXITED) {
- r = sd_bus_error_setf(&error, SD_BUS_ERROR_FAILED, "Client died abnormally.");
- goto fail;
- }
-
- if (si->si_status != EXIT_SUCCESS) {
- if (read(o->errno_fd, &r, sizeof(r)) == sizeof(r))
- r = sd_bus_error_set_errnof(&error, r, "%m");
- else
- r = sd_bus_error_setf(&error, SD_BUS_ERROR_FAILED, "Client failed.");
-
- goto fail;
- }
-
- r = sd_bus_reply_method_return(o->message, NULL);
- if (r < 0)
- log_error_errno(r, "Failed to reply to message: %m");
-
- machine_operation_unref(o);
- return 0;
-
-fail:
- r = sd_bus_reply_method_error(o->message, &error);
- if (r < 0)
- log_error_errno(r, "Failed to reply to message: %m");
-
- machine_operation_unref(o);
- return 0;
-}
-
-int bus_machine_method_copy(sd_bus *bus, 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;
- MachineOperation *o;
- bool copy_from;
- pid_t child;
- char *t;
- int r;
-
- if (m->n_operations >= MACHINE_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) || !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",
- 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));
- errno_pipe_fd[1] = safe_close(errno_pipe_fd[1]);
-
- _exit(EXIT_FAILURE);
- }
-
- errno_pipe_fd[1] = safe_close(errno_pipe_fd[1]);
-
- /* Copying might take a while, hence install a watch the
- * child, and return */
-
- o = new0(MachineOperation, 1);
- if (!o)
- return log_oom();
-
- o->pid = child;
- o->message = sd_bus_message_ref(message);
- o->errno_fd = errno_pipe_fd[0];
- errno_pipe_fd[0] = -1;
-
- r = sd_event_add_child(m->manager->event, &o->event_source, child, WEXITED, machine_operation_done, o);
- if (r < 0) {
- machine_operation_unref(o);
- return log_oom();
- }
-
- LIST_PREPEND(operations, m->operations, o);
- m->n_operations++;
- o->machine = m;
-
- return 1;
-}
-
-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, 0),
- SD_BUS_METHOD("OpenLogin", NULL, "hs", bus_machine_method_open_login, 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_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_bus_creds_unref_ 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_bus_message_unref_ 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);
-}
~ianmdlvl / elogind.git / blobdiff