2 This file is part of systemd.
4 Copyright 2011 Lennart Poettering
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 #include <sys/mount.h>
25 /* When we include libgen.h because we need dirname() we immediately
26 * undefine basename() since libgen.h defines it as a macro to the POSIX
27 * version which is really broken. We prefer GNU basename(). */
31 #include "alloc-util.h"
32 #include "bus-common-errors.h"
33 #include "bus-internal.h"
34 #include "bus-label.h"
40 #include "formats-util.h"
42 #include "in-addr-util.h"
43 #include "local-addresses.h"
44 #include "machine-dbus.h"
47 #include "path-util.h"
48 #include "process-util.h"
49 #include "signal-util.h"
51 #include "terminal-util.h"
52 #include "user-util.h"
54 static int property_get_state(
57 const char *interface
,
59 sd_bus_message
*reply
,
61 sd_bus_error
*error
) {
63 Machine
*m
= userdata
;
71 state
= machine_state_to_string(machine_get_state(m
));
73 r
= sd_bus_message_append_basic(reply
, 's', state
);
80 static int property_get_netif(
83 const char *interface
,
85 sd_bus_message
*reply
,
87 sd_bus_error
*error
) {
89 Machine
*m
= userdata
;
95 assert_cc(sizeof(int) == sizeof(int32_t));
97 return sd_bus_message_append_array(reply
, 'i', m
->netif
, m
->n_netif
* sizeof(int));
100 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_class
, machine_class
, MachineClass
);
102 int bus_machine_method_terminate(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
103 Machine
*m
= userdata
;
109 r
= bus_verify_polkit_async(
112 "org.freedesktop.machine1.manage-machines",
116 &m
->manager
->polkit_registry
,
121 return 1; /* Will call us back */
127 return sd_bus_reply_method_return(message
, NULL
);
130 int bus_machine_method_kill(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
131 Machine
*m
= userdata
;
140 r
= sd_bus_message_read(message
, "si", &swho
, &signo
);
147 who
= kill_who_from_string(swho
);
149 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid kill parameter '%s'", swho
);
152 if (!SIGNAL_VALID(signo
))
153 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid signal %i", signo
);
155 r
= bus_verify_polkit_async(
158 "org.freedesktop.machine1.manage-machines",
162 &m
->manager
->polkit_registry
,
167 return 1; /* Will call us back */
169 r
= machine_kill(m
, who
, signo
);
173 return sd_bus_reply_method_return(message
, NULL
);
176 int bus_machine_method_get_addresses(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
177 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
178 Machine
*m
= userdata
;
184 r
= sd_bus_message_new_method_return(message
, &reply
);
188 r
= sd_bus_message_open_container(reply
, 'a', "(iay)");
195 _cleanup_free_
struct local_address
*addresses
= NULL
;
196 struct local_address
*a
;
199 n
= local_addresses(NULL
, 0, AF_UNSPEC
, &addresses
);
203 for (a
= addresses
, i
= 0; i
< n
; a
++, i
++) {
205 r
= sd_bus_message_open_container(reply
, 'r', "iay");
209 r
= sd_bus_message_append(reply
, "i", addresses
[i
].family
);
213 r
= sd_bus_message_append_array(reply
, 'y', &addresses
[i
].address
, FAMILY_ADDRESS_SIZE(addresses
[i
].family
));
217 r
= sd_bus_message_close_container(reply
);
225 case MACHINE_CONTAINER
: {
226 _cleanup_close_pair_
int pair
[2] = { -1, -1 };
227 _cleanup_free_
char *us
= NULL
, *them
= NULL
;
228 _cleanup_close_
int netns_fd
= -1;
233 r
= readlink_malloc("/proc/self/ns/net", &us
);
237 p
= procfs_file_alloca(m
->leader
, "ns/net");
238 r
= readlink_malloc(p
, &them
);
243 return sd_bus_error_setf(error
, BUS_ERROR_NO_PRIVATE_NETWORKING
, "Machine %s does not use private networking", m
->name
);
245 r
= namespace_open(m
->leader
, NULL
, NULL
, &netns_fd
, NULL
, NULL
);
249 if (socketpair(AF_UNIX
, SOCK_SEQPACKET
, 0, pair
) < 0)
254 return sd_bus_error_set_errnof(error
, errno
, "Failed to fork(): %m");
257 _cleanup_free_
struct local_address
*addresses
= NULL
;
258 struct local_address
*a
;
261 pair
[0] = safe_close(pair
[0]);
263 r
= namespace_enter(-1, -1, netns_fd
, -1, -1);
267 n
= local_addresses(NULL
, 0, AF_UNSPEC
, &addresses
);
271 for (a
= addresses
, i
= 0; i
< n
; a
++, i
++) {
272 struct iovec iov
[2] = {
273 { .iov_base
= &a
->family
, .iov_len
= sizeof(a
->family
) },
274 { .iov_base
= &a
->address
, .iov_len
= FAMILY_ADDRESS_SIZE(a
->family
) },
277 r
= writev(pair
[1], iov
, 2);
282 pair
[1] = safe_close(pair
[1]);
287 pair
[1] = safe_close(pair
[1]);
292 union in_addr_union in_addr
;
299 iov
[0] = (struct iovec
) { .iov_base
= &family
, .iov_len
= sizeof(family
) };
300 iov
[1] = (struct iovec
) { .iov_base
= &in_addr
, .iov_len
= sizeof(in_addr
) };
302 n
= recvmsg(pair
[0], &mh
, 0);
305 if ((size_t) n
< sizeof(family
))
308 r
= sd_bus_message_open_container(reply
, 'r', "iay");
312 r
= sd_bus_message_append(reply
, "i", family
);
319 if (n
!= sizeof(struct in_addr
) + sizeof(family
))
322 r
= sd_bus_message_append_array(reply
, 'y', &in_addr
.in
, sizeof(in_addr
.in
));
326 if (n
!= sizeof(struct in6_addr
) + sizeof(family
))
329 r
= sd_bus_message_append_array(reply
, 'y', &in_addr
.in6
, sizeof(in_addr
.in6
));
335 r
= sd_bus_message_close_container(reply
);
340 r
= wait_for_terminate(child
, &si
);
342 return sd_bus_error_set_errnof(error
, r
, "Failed to wait for child: %m");
343 if (si
.si_code
!= CLD_EXITED
|| si
.si_status
!= EXIT_SUCCESS
)
344 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Child died abnormally.");
349 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Requesting IP address data is only supported on container machines.");
352 r
= sd_bus_message_close_container(reply
);
356 return sd_bus_send(NULL
, reply
, NULL
);
359 int bus_machine_method_get_os_release(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
360 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
361 _cleanup_strv_free_
char **l
= NULL
;
362 Machine
*m
= userdata
;
372 r
= load_env_file_pairs(NULL
, "/etc/os-release", NULL
, &l
);
378 case MACHINE_CONTAINER
: {
379 _cleanup_close_
int mntns_fd
= -1, root_fd
= -1;
380 _cleanup_close_pair_
int pair
[2] = { -1, -1 };
381 _cleanup_fclose_
FILE *f
= NULL
;
385 r
= namespace_open(m
->leader
, NULL
, &mntns_fd
, NULL
, NULL
, &root_fd
);
389 if (socketpair(AF_UNIX
, SOCK_SEQPACKET
, 0, pair
) < 0)
394 return sd_bus_error_set_errnof(error
, errno
, "Failed to fork(): %m");
397 _cleanup_close_
int fd
= -1;
399 pair
[0] = safe_close(pair
[0]);
401 r
= namespace_enter(-1, mntns_fd
, -1, -1, root_fd
);
405 fd
= open("/etc/os-release", O_RDONLY
|O_CLOEXEC
);
407 fd
= open("/usr/lib/os-release", O_RDONLY
|O_CLOEXEC
);
412 r
= copy_bytes(fd
, pair
[1], (uint64_t) -1, false);
419 pair
[1] = safe_close(pair
[1]);
421 f
= fdopen(pair
[0], "re");
427 r
= load_env_file_pairs(f
, "/etc/os-release", NULL
, &l
);
431 r
= wait_for_terminate(child
, &si
);
433 return sd_bus_error_set_errnof(error
, r
, "Failed to wait for child: %m");
434 if (si
.si_code
!= CLD_EXITED
|| si
.si_status
!= EXIT_SUCCESS
)
435 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Child died abnormally.");
441 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Requesting OS release data is only supported on container machines.");
444 r
= sd_bus_message_new_method_return(message
, &reply
);
448 r
= sd_bus_message_open_container(reply
, 'a', "{ss}");
452 STRV_FOREACH_PAIR(k
, v
, l
) {
453 r
= sd_bus_message_append(reply
, "{ss}", *k
, *v
);
458 r
= sd_bus_message_close_container(reply
);
462 return sd_bus_send(NULL
, reply
, NULL
);
465 int bus_machine_method_open_pty(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
466 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
467 _cleanup_free_
char *pty_name
= NULL
;
468 _cleanup_close_
int master
= -1;
469 Machine
*m
= userdata
;
475 r
= bus_verify_polkit_async(
478 m
->class == MACHINE_HOST
? "org.freedesktop.machine1.host-open-pty" : "org.freedesktop.machine1.open-pty",
482 &m
->manager
->polkit_registry
,
487 return 1; /* Will call us back */
489 master
= machine_openpt(m
, O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
493 r
= ptsname_namespace(master
, &pty_name
);
497 r
= sd_bus_message_new_method_return(message
, &reply
);
501 r
= sd_bus_message_append(reply
, "hs", master
, pty_name
);
505 return sd_bus_send(NULL
, reply
, NULL
);
508 static int container_bus_new(Machine
*m
, sd_bus_error
*error
, sd_bus
**ret
) {
520 case MACHINE_CONTAINER
: {
521 _cleanup_(sd_bus_unrefp
) sd_bus
*bus
= NULL
;
524 r
= sd_bus_new(&bus
);
528 if (asprintf(&address
, "x-machine-kernel:pid=%1$" PID_PRI
";x-machine-unix:pid=%1$" PID_PRI
, m
->leader
) < 0)
531 bus
->address
= address
;
532 bus
->bus_client
= true;
533 bus
->trusted
= false;
534 bus
->is_system
= true;
536 r
= sd_bus_start(bus
);
538 return sd_bus_error_set_errnof(error
, r
, "There is no system bus in container %s.", m
->name
);
554 int bus_machine_method_open_login(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
555 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
556 _cleanup_free_
char *pty_name
= NULL
;
557 _cleanup_(sd_bus_flush_close_unrefp
) sd_bus
*allocated_bus
= NULL
;
558 _cleanup_close_
int master
= -1;
559 sd_bus
*container_bus
= NULL
;
560 Machine
*m
= userdata
;
561 const char *p
, *getty
;
567 r
= bus_verify_polkit_async(
570 m
->class == MACHINE_HOST
? "org.freedesktop.machine1.host-login" : "org.freedesktop.machine1.login",
574 &m
->manager
->polkit_registry
,
579 return 1; /* Will call us back */
581 master
= machine_openpt(m
, O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
585 r
= ptsname_namespace(master
, &pty_name
);
589 p
= path_startswith(pty_name
, "/dev/pts/");
591 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "PTS name %s is invalid", pty_name
);
593 r
= container_bus_new(m
, error
, &allocated_bus
);
597 container_bus
= allocated_bus
?: m
->manager
->bus
;
599 getty
= strjoina("container-getty@", p
, ".service");
601 r
= sd_bus_call_method(
603 "org.freedesktop.systemd1",
604 "/org/freedesktop/systemd1",
605 "org.freedesktop.systemd1.Manager",
608 "ss", getty
, "replace");
612 r
= sd_bus_message_new_method_return(message
, &reply
);
616 r
= sd_bus_message_append(reply
, "hs", master
, pty_name
);
620 return sd_bus_send(NULL
, reply
, NULL
);
623 int bus_machine_method_open_shell(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
624 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
, *tm
= NULL
;
625 _cleanup_free_
char *pty_name
= NULL
;
626 _cleanup_(sd_bus_flush_close_unrefp
) sd_bus
*allocated_bus
= NULL
;
627 sd_bus
*container_bus
= NULL
;
628 _cleanup_close_
int master
= -1, slave
= -1;
629 _cleanup_strv_free_
char **env
= NULL
, **args
= NULL
;
630 Machine
*m
= userdata
;
631 const char *p
, *unit
, *user
, *path
, *description
, *utmp_id
;
637 r
= sd_bus_message_read(message
, "ss", &user
, &path
);
640 user
= empty_to_null(user
);
643 if (!path_is_absolute(path
))
644 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Specified path '%s' is not absolute", path
);
646 r
= sd_bus_message_read_strv(message
, &args
);
649 if (strv_isempty(args
)) {
650 args
= strv_free(args
);
652 args
= strv_new(path
, NULL
);
656 args
[0][0] = '-'; /* Tell /bin/sh that this shall be a login shell */
659 r
= sd_bus_message_read_strv(message
, &env
);
662 if (!strv_env_is_valid(env
))
663 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid environment assignments");
665 r
= bus_verify_polkit_async(
668 m
->class == MACHINE_HOST
? "org.freedesktop.machine1.host-shell" : "org.freedesktop.machine1.shell",
672 &m
->manager
->polkit_registry
,
677 return 1; /* Will call us back */
679 master
= machine_openpt(m
, O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
683 r
= ptsname_namespace(master
, &pty_name
);
687 p
= path_startswith(pty_name
, "/dev/pts/");
690 slave
= machine_open_terminal(m
, pty_name
, O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
694 utmp_id
= path_startswith(pty_name
, "/dev/");
697 r
= container_bus_new(m
, error
, &allocated_bus
);
701 container_bus
= allocated_bus
?: m
->manager
->bus
;
703 r
= sd_bus_message_new_method_call(
706 "org.freedesktop.systemd1",
707 "/org/freedesktop/systemd1",
708 "org.freedesktop.systemd1.Manager",
709 "StartTransientUnit");
714 unit
= strjoina("container-shell@", p
, ".service");
715 r
= sd_bus_message_append(tm
, "ss", unit
, "fail");
720 r
= sd_bus_message_open_container(tm
, 'a', "(sv)");
724 description
= strjoina("Shell for User ", isempty(user
) ? "root" : user
);
725 r
= sd_bus_message_append(tm
,
726 "(sv)(sv)(sv)(sv)(sv)(sv)(sv)(sv)(sv)(sv)(sv)(sv)",
727 "Description", "s", description
,
728 "StandardInputFileDescriptor", "h", slave
,
729 "StandardOutputFileDescriptor", "h", slave
,
730 "StandardErrorFileDescriptor", "h", slave
,
731 "SendSIGHUP", "b", true,
732 "IgnoreSIGPIPE", "b", false,
733 "KillMode", "s", "mixed",
734 "TTYReset", "b", true,
735 "UtmpIdentifier", "s", utmp_id
,
736 "UtmpMode", "s", "user",
737 "PAMName", "s", "login",
738 "WorkingDirectory", "s", "-~");
742 r
= sd_bus_message_append(tm
, "(sv)", "User", "s", isempty(user
) ? "root" : user
);
746 if (!strv_isempty(env
)) {
747 r
= sd_bus_message_open_container(tm
, 'r', "sv");
751 r
= sd_bus_message_append(tm
, "s", "Environment");
755 r
= sd_bus_message_open_container(tm
, 'v', "as");
759 r
= sd_bus_message_append_strv(tm
, env
);
763 r
= sd_bus_message_close_container(tm
);
767 r
= sd_bus_message_close_container(tm
);
773 r
= sd_bus_message_open_container(tm
, 'r', "sv");
777 r
= sd_bus_message_append(tm
, "s", "ExecStart");
781 r
= sd_bus_message_open_container(tm
, 'v', "a(sasb)");
785 r
= sd_bus_message_open_container(tm
, 'a', "(sasb)");
789 r
= sd_bus_message_open_container(tm
, 'r', "sasb");
793 r
= sd_bus_message_append(tm
, "s", path
);
797 r
= sd_bus_message_append_strv(tm
, args
);
801 r
= sd_bus_message_append(tm
, "b", true);
805 r
= sd_bus_message_close_container(tm
);
809 r
= sd_bus_message_close_container(tm
);
813 r
= sd_bus_message_close_container(tm
);
817 r
= sd_bus_message_close_container(tm
);
821 r
= sd_bus_message_close_container(tm
);
825 /* Auxiliary units */
826 r
= sd_bus_message_append(tm
, "a(sa(sv))", 0);
830 r
= sd_bus_call(container_bus
, tm
, 0, error
, NULL
);
834 slave
= safe_close(slave
);
836 r
= sd_bus_message_new_method_return(message
, &reply
);
840 r
= sd_bus_message_append(reply
, "hs", master
, pty_name
);
844 return sd_bus_send(NULL
, reply
, NULL
);
847 int bus_machine_method_bind_mount(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
848 _cleanup_close_pair_
int errno_pipe_fd
[2] = { -1, -1 };
849 char mount_slave
[] = "/tmp/propagate.XXXXXX", *mount_tmp
, *mount_outside
, *p
;
850 bool mount_slave_created
= false, mount_slave_mounted
= false,
851 mount_tmp_created
= false, mount_tmp_mounted
= false,
852 mount_outside_created
= false, mount_outside_mounted
= false;
853 const char *dest
, *src
;
854 Machine
*m
= userdata
;
855 int read_only
, make_directory
;
863 if (m
->class != MACHINE_CONTAINER
)
864 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Bind mounting is only supported on container machines.");
866 r
= sd_bus_message_read(message
, "ssbb", &src
, &dest
, &read_only
, &make_directory
);
870 if (!path_is_absolute(src
) || !path_is_safe(src
))
871 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Source path must be absolute and not contain ../.");
875 else if (!path_is_absolute(dest
) || !path_is_safe(dest
))
876 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Destination path must be absolute and not contain ../.");
878 r
= bus_verify_polkit_async(
881 "org.freedesktop.machine1.manage-machines",
885 &m
->manager
->polkit_registry
,
890 return 1; /* Will call us back */
892 /* One day, when bind mounting /proc/self/fd/n works across
893 * namespace boundaries we should rework this logic to make
896 p
= strjoina("/run/systemd/nspawn/propagate/", m
->name
, "/");
897 if (laccess(p
, F_OK
) < 0)
898 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Container does not allow propagation of mount points.");
900 /* Our goal is to install a new bind mount into the container,
901 possibly read-only. This is irritatingly complex
902 unfortunately, currently.
904 First, we start by creating a private playground in /tmp,
905 that we can mount MS_SLAVE. (Which is necessary, since
906 MS_MOVE cannot be applied to mounts with MS_SHARED parent
909 if (!mkdtemp(mount_slave
))
910 return sd_bus_error_set_errnof(error
, errno
, "Failed to create playground %s: %m", mount_slave
);
912 mount_slave_created
= true;
914 if (mount(mount_slave
, mount_slave
, NULL
, MS_BIND
, NULL
) < 0) {
915 r
= sd_bus_error_set_errnof(error
, errno
, "Failed to make bind mount %s: %m", mount_slave
);
919 mount_slave_mounted
= true;
921 if (mount(NULL
, mount_slave
, NULL
, MS_SLAVE
, NULL
) < 0) {
922 r
= sd_bus_error_set_errnof(error
, errno
, "Failed to remount slave %s: %m", mount_slave
);
926 /* Second, we mount the source directory to a directory inside
927 of our MS_SLAVE playground. */
928 mount_tmp
= strjoina(mount_slave
, "/mount");
929 if (mkdir(mount_tmp
, 0700) < 0) {
930 r
= sd_bus_error_set_errnof(error
, errno
, "Failed to create temporary mount point %s: %m", mount_tmp
);
934 mount_tmp_created
= true;
936 if (mount(src
, mount_tmp
, NULL
, MS_BIND
, NULL
) < 0) {
937 r
= sd_bus_error_set_errnof(error
, errno
, "Failed to overmount %s: %m", mount_tmp
);
941 mount_tmp_mounted
= true;
943 /* Third, we remount the new bind mount read-only if requested. */
945 if (mount(NULL
, mount_tmp
, NULL
, MS_BIND
|MS_REMOUNT
|MS_RDONLY
, NULL
) < 0) {
946 r
= sd_bus_error_set_errnof(error
, errno
, "Failed to remount read-only %s: %m", mount_tmp
);
950 /* Fourth, we move the new bind mount into the propagation
951 * directory. This way it will appear there read-only
954 mount_outside
= strjoina("/run/systemd/nspawn/propagate/", m
->name
, "/XXXXXX");
955 if (!mkdtemp(mount_outside
)) {
956 r
= sd_bus_error_set_errnof(error
, errno
, "Cannot create propagation directory %s: %m", mount_outside
);
960 mount_outside_created
= true;
962 if (mount(mount_tmp
, mount_outside
, NULL
, MS_MOVE
, NULL
) < 0) {
963 r
= sd_bus_error_set_errnof(error
, errno
, "Failed to move %s to %s: %m", mount_tmp
, mount_outside
);
967 mount_outside_mounted
= true;
968 mount_tmp_mounted
= false;
970 (void) rmdir(mount_tmp
);
971 mount_tmp_created
= false;
973 (void) umount(mount_slave
);
974 mount_slave_mounted
= false;
976 (void) rmdir(mount_slave
);
977 mount_slave_created
= false;
979 if (pipe2(errno_pipe_fd
, O_CLOEXEC
|O_NONBLOCK
) < 0) {
980 r
= sd_bus_error_set_errnof(error
, errno
, "Failed to create pipe: %m");
986 r
= sd_bus_error_set_errnof(error
, errno
, "Failed to fork(): %m");
991 const char *mount_inside
;
995 errno_pipe_fd
[0] = safe_close(errno_pipe_fd
[0]);
997 q
= procfs_file_alloca(m
->leader
, "ns/mnt");
998 mntfd
= open(q
, O_RDONLY
|O_NOCTTY
|O_CLOEXEC
);
1000 r
= log_error_errno(errno
, "Failed to open mount namespace of leader: %m");
1004 if (setns(mntfd
, CLONE_NEWNS
) < 0) {
1005 r
= log_error_errno(errno
, "Failed to join namespace of leader: %m");
1010 (void) mkdir_p(dest
, 0755);
1012 /* Fifth, move the mount to the right place inside */
1013 mount_inside
= strjoina("/run/systemd/nspawn/incoming/", basename(mount_outside
));
1014 if (mount(mount_inside
, dest
, NULL
, MS_MOVE
, NULL
) < 0) {
1015 r
= log_error_errno(errno
, "Failed to mount: %m");
1019 _exit(EXIT_SUCCESS
);
1022 (void) write(errno_pipe_fd
[1], &r
, sizeof(r
));
1023 errno_pipe_fd
[1] = safe_close(errno_pipe_fd
[1]);
1025 _exit(EXIT_FAILURE
);
1028 errno_pipe_fd
[1] = safe_close(errno_pipe_fd
[1]);
1030 r
= wait_for_terminate(child
, &si
);
1032 r
= sd_bus_error_set_errnof(error
, r
, "Failed to wait for child: %m");
1035 if (si
.si_code
!= CLD_EXITED
) {
1036 r
= sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Child died abnormally.");
1039 if (si
.si_status
!= EXIT_SUCCESS
) {
1041 if (read(errno_pipe_fd
[0], &r
, sizeof(r
)) == sizeof(r
))
1042 r
= sd_bus_error_set_errnof(error
, r
, "Failed to mount: %m");
1044 r
= sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Child failed.");
1048 r
= sd_bus_reply_method_return(message
, NULL
);
1051 if (mount_outside_mounted
)
1052 umount(mount_outside
);
1053 if (mount_outside_created
)
1054 rmdir(mount_outside
);
1056 if (mount_tmp_mounted
)
1058 if (mount_tmp_created
)
1061 if (mount_slave_mounted
)
1062 umount(mount_slave
);
1063 if (mount_slave_created
)
1069 int bus_machine_method_copy(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
1070 const char *src
, *dest
, *host_path
, *container_path
, *host_basename
, *host_dirname
, *container_basename
, *container_dirname
;
1071 _cleanup_close_pair_
int errno_pipe_fd
[2] = { -1, -1 };
1072 _cleanup_close_
int hostfd
= -1;
1073 Machine
*m
= userdata
;
1082 if (m
->manager
->n_operations
>= OPERATIONS_MAX
)
1083 return sd_bus_error_setf(error
, SD_BUS_ERROR_LIMITS_EXCEEDED
, "Too many ongoing copies.");
1085 if (m
->class != MACHINE_CONTAINER
)
1086 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Copying files is only supported on container machines.");
1088 r
= sd_bus_message_read(message
, "ss", &src
, &dest
);
1092 if (!path_is_absolute(src
))
1093 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Source path must be absolute.");
1097 else if (!path_is_absolute(dest
))
1098 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Destination path must be absolute.");
1100 r
= bus_verify_polkit_async(
1103 "org.freedesktop.machine1.manage-machines",
1107 &m
->manager
->polkit_registry
,
1112 return 1; /* Will call us back */
1114 copy_from
= strstr(sd_bus_message_get_member(message
), "CopyFrom");
1117 container_path
= src
;
1121 container_path
= dest
;
1124 host_basename
= basename(host_path
);
1125 t
= strdupa(host_path
);
1126 host_dirname
= dirname(t
);
1128 container_basename
= basename(container_path
);
1129 t
= strdupa(container_path
);
1130 container_dirname
= dirname(t
);
1132 hostfd
= open(host_dirname
, O_CLOEXEC
|O_RDONLY
|O_NOCTTY
|O_DIRECTORY
);
1134 return sd_bus_error_set_errnof(error
, errno
, "Failed to open host directory %s: %m", host_dirname
);
1136 if (pipe2(errno_pipe_fd
, O_CLOEXEC
|O_NONBLOCK
) < 0)
1137 return sd_bus_error_set_errnof(error
, errno
, "Failed to create pipe: %m");
1141 return sd_bus_error_set_errnof(error
, errno
, "Failed to fork(): %m");
1148 errno_pipe_fd
[0] = safe_close(errno_pipe_fd
[0]);
1150 q
= procfs_file_alloca(m
->leader
, "ns/mnt");
1151 mntfd
= open(q
, O_RDONLY
|O_NOCTTY
|O_CLOEXEC
);
1153 r
= log_error_errno(errno
, "Failed to open mount namespace of leader: %m");
1157 if (setns(mntfd
, CLONE_NEWNS
) < 0) {
1158 r
= log_error_errno(errno
, "Failed to join namespace of leader: %m");
1162 containerfd
= open(container_dirname
, O_CLOEXEC
|O_RDONLY
|O_NOCTTY
|O_DIRECTORY
);
1163 if (containerfd
< 0) {
1164 r
= log_error_errno(errno
, "Failed top open destination directory: %m");
1169 r
= copy_tree_at(containerfd
, container_basename
, hostfd
, host_basename
, true);
1171 r
= copy_tree_at(hostfd
, host_basename
, containerfd
, container_basename
, true);
1173 hostfd
= safe_close(hostfd
);
1174 containerfd
= safe_close(containerfd
);
1177 r
= log_error_errno(r
, "Failed to copy tree: %m");
1181 _exit(EXIT_SUCCESS
);
1184 (void) write(errno_pipe_fd
[1], &r
, sizeof(r
));
1185 _exit(EXIT_FAILURE
);
1188 errno_pipe_fd
[1] = safe_close(errno_pipe_fd
[1]);
1190 /* Copying might take a while, hence install a watch on the child, and return */
1192 r
= operation_new(m
->manager
, m
, child
, message
, errno_pipe_fd
[0], NULL
);
1194 (void) sigkill_wait(child
);
1197 errno_pipe_fd
[0] = -1;
1202 int bus_machine_method_open_root_directory(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
1203 _cleanup_close_
int fd
= -1;
1204 Machine
*m
= userdata
;
1210 r
= bus_verify_polkit_async(
1213 "org.freedesktop.machine1.manage-machines",
1217 &m
->manager
->polkit_registry
,
1222 return 1; /* Will call us back */
1227 fd
= open("/", O_RDONLY
|O_CLOEXEC
|O_DIRECTORY
);
1233 case MACHINE_CONTAINER
: {
1234 _cleanup_close_
int mntns_fd
= -1, root_fd
= -1;
1235 _cleanup_close_pair_
int pair
[2] = { -1, -1 };
1239 r
= namespace_open(m
->leader
, NULL
, &mntns_fd
, NULL
, NULL
, &root_fd
);
1243 if (socketpair(AF_UNIX
, SOCK_DGRAM
, 0, pair
) < 0)
1248 return sd_bus_error_set_errnof(error
, errno
, "Failed to fork(): %m");
1251 _cleanup_close_
int dfd
= -1;
1253 pair
[0] = safe_close(pair
[0]);
1255 r
= namespace_enter(-1, mntns_fd
, -1, -1, root_fd
);
1257 _exit(EXIT_FAILURE
);
1259 dfd
= open("/", O_RDONLY
|O_CLOEXEC
|O_DIRECTORY
);
1261 _exit(EXIT_FAILURE
);
1263 r
= send_one_fd(pair
[1], dfd
, 0);
1264 dfd
= safe_close(dfd
);
1266 _exit(EXIT_FAILURE
);
1268 _exit(EXIT_SUCCESS
);
1271 pair
[1] = safe_close(pair
[1]);
1273 r
= wait_for_terminate(child
, &si
);
1275 return sd_bus_error_set_errnof(error
, r
, "Failed to wait for child: %m");
1276 if (si
.si_code
!= CLD_EXITED
|| si
.si_status
!= EXIT_SUCCESS
)
1277 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Child died abnormally.");
1279 fd
= receive_one_fd(pair
[0], MSG_DONTWAIT
);
1287 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Opening the root directory is only supported on container machines.");
1290 return sd_bus_reply_method_return(message
, "h", fd
);
1293 const sd_bus_vtable machine_vtable
[] = {
1294 SD_BUS_VTABLE_START(0),
1295 SD_BUS_PROPERTY("Name", "s", NULL
, offsetof(Machine
, name
), SD_BUS_VTABLE_PROPERTY_CONST
),
1296 SD_BUS_PROPERTY("Id", "ay", bus_property_get_id128
, offsetof(Machine
, id
), SD_BUS_VTABLE_PROPERTY_CONST
),
1297 BUS_PROPERTY_DUAL_TIMESTAMP("Timestamp", offsetof(Machine
, timestamp
), SD_BUS_VTABLE_PROPERTY_CONST
),
1298 SD_BUS_PROPERTY("Service", "s", NULL
, offsetof(Machine
, service
), SD_BUS_VTABLE_PROPERTY_CONST
),
1299 SD_BUS_PROPERTY("Unit", "s", NULL
, offsetof(Machine
, unit
), SD_BUS_VTABLE_PROPERTY_CONST
),
1300 SD_BUS_PROPERTY("Scope", "s", NULL
, offsetof(Machine
, unit
), SD_BUS_VTABLE_PROPERTY_CONST
|SD_BUS_VTABLE_HIDDEN
),
1301 SD_BUS_PROPERTY("Leader", "u", NULL
, offsetof(Machine
, leader
), SD_BUS_VTABLE_PROPERTY_CONST
),
1302 SD_BUS_PROPERTY("Class", "s", property_get_class
, offsetof(Machine
, class), SD_BUS_VTABLE_PROPERTY_CONST
),
1303 SD_BUS_PROPERTY("RootDirectory", "s", NULL
, offsetof(Machine
, root_directory
), SD_BUS_VTABLE_PROPERTY_CONST
),
1304 SD_BUS_PROPERTY("NetworkInterfaces", "ai", property_get_netif
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
1305 SD_BUS_PROPERTY("State", "s", property_get_state
, 0, 0),
1306 SD_BUS_METHOD("Terminate", NULL
, NULL
, bus_machine_method_terminate
, SD_BUS_VTABLE_UNPRIVILEGED
),
1307 SD_BUS_METHOD("Kill", "si", NULL
, bus_machine_method_kill
, SD_BUS_VTABLE_UNPRIVILEGED
),
1308 SD_BUS_METHOD("GetAddresses", NULL
, "a(iay)", bus_machine_method_get_addresses
, SD_BUS_VTABLE_UNPRIVILEGED
),
1309 SD_BUS_METHOD("GetOSRelease", NULL
, "a{ss}", bus_machine_method_get_os_release
, SD_BUS_VTABLE_UNPRIVILEGED
),
1310 SD_BUS_METHOD("OpenPTY", NULL
, "hs", bus_machine_method_open_pty
, SD_BUS_VTABLE_UNPRIVILEGED
),
1311 SD_BUS_METHOD("OpenLogin", NULL
, "hs", bus_machine_method_open_login
, SD_BUS_VTABLE_UNPRIVILEGED
),
1312 SD_BUS_METHOD("OpenShell", "ssasas", "hs", bus_machine_method_open_shell
, SD_BUS_VTABLE_UNPRIVILEGED
),
1313 SD_BUS_METHOD("BindMount", "ssbb", NULL
, bus_machine_method_bind_mount
, SD_BUS_VTABLE_UNPRIVILEGED
),
1314 SD_BUS_METHOD("CopyFrom", "ss", NULL
, bus_machine_method_copy
, SD_BUS_VTABLE_UNPRIVILEGED
),
1315 SD_BUS_METHOD("CopyTo", "ss", NULL
, bus_machine_method_copy
, SD_BUS_VTABLE_UNPRIVILEGED
),
1316 SD_BUS_METHOD("OpenRootDirectory", NULL
, "h", bus_machine_method_open_root_directory
, SD_BUS_VTABLE_UNPRIVILEGED
),
1320 int machine_object_find(sd_bus
*bus
, const char *path
, const char *interface
, void *userdata
, void **found
, sd_bus_error
*error
) {
1321 Manager
*m
= userdata
;
1331 if (streq(path
, "/org/freedesktop/machine1/machine/self")) {
1332 _cleanup_(sd_bus_creds_unrefp
) sd_bus_creds
*creds
= NULL
;
1333 sd_bus_message
*message
;
1336 message
= sd_bus_get_current_message(bus
);
1340 r
= sd_bus_query_sender_creds(message
, SD_BUS_CREDS_PID
, &creds
);
1344 r
= sd_bus_creds_get_pid(creds
, &pid
);
1348 r
= manager_get_machine_by_pid(m
, pid
, &machine
);
1352 _cleanup_free_
char *e
= NULL
;
1355 p
= startswith(path
, "/org/freedesktop/machine1/machine/");
1359 e
= bus_label_unescape(p
);
1363 machine
= hashmap_get(m
->machines
, e
);
1372 char *machine_bus_path(Machine
*m
) {
1373 _cleanup_free_
char *e
= NULL
;
1377 e
= bus_label_escape(m
->name
);
1381 return strappend("/org/freedesktop/machine1/machine/", e
);
1384 int machine_node_enumerator(sd_bus
*bus
, const char *path
, void *userdata
, char ***nodes
, sd_bus_error
*error
) {
1385 _cleanup_strv_free_
char **l
= NULL
;
1386 Machine
*machine
= NULL
;
1387 Manager
*m
= userdata
;
1395 HASHMAP_FOREACH(machine
, m
->machines
, i
) {
1398 p
= machine_bus_path(machine
);
1402 r
= strv_consume(&l
, p
);
1413 int machine_send_signal(Machine
*m
, bool new_machine
) {
1414 _cleanup_free_
char *p
= NULL
;
1418 p
= machine_bus_path(m
);
1422 return sd_bus_emit_signal(
1424 "/org/freedesktop/machine1",
1425 "org.freedesktop.machine1.Manager",
1426 new_machine
? "MachineNew" : "MachineRemoved",
1430 int machine_send_create_reply(Machine
*m
, sd_bus_error
*error
) {
1431 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*c
= NULL
;
1432 _cleanup_free_
char *p
= NULL
;
1436 if (!m
->create_message
)
1439 c
= m
->create_message
;
1440 m
->create_message
= NULL
;
1443 return sd_bus_reply_method_error(c
, error
);
1445 /* Update the machine state file before we notify the client
1446 * about the result. */
1449 p
= machine_bus_path(m
);
1453 return sd_bus_reply_method_return(c
, "o", p
);