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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
9444b1f2 LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2011 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
21 | #include <errno.h> | |
22 | #include <string.h> | |
90adaa25 | 23 | #include <sys/mount.h> |
e306723e | 24 | #include <sys/wait.h> |
9444b1f2 | 25 | |
0370612e | 26 | /* When we include libgen.h because we need dirname() we immediately |
11c9f1e4 SM |
27 | * undefine basename() since libgen.h defines it as a macro to the POSIX |
28 | * version which is really broken. We prefer GNU basename(). */ | |
0370612e LP |
29 | #include <libgen.h> |
30 | #undef basename | |
31 | ||
b5efdb8a | 32 | #include "alloc-util.h" |
96aad8d1 | 33 | #include "bus-common-errors.h" |
3ffd4af2 LP |
34 | #include "bus-internal.h" |
35 | #include "bus-label.h" | |
36 | #include "bus-util.h" | |
717603e3 | 37 | #include "copy.h" |
3ffd4af2 LP |
38 | #include "env-util.h" |
39 | #include "fd-util.h" | |
717603e3 | 40 | #include "fileio.h" |
f97b34a6 | 41 | #include "format-util.h" |
f4f15635 | 42 | #include "fs-util.h" |
3b653205 | 43 | #include "in-addr-util.h" |
496a5a69 | 44 | #include "local-addresses.h" |
003dffde | 45 | #include "machine-dbus.h" |
3ffd4af2 LP |
46 | #include "machine.h" |
47 | #include "mkdir.h" | |
48 | #include "path-util.h" | |
0b452006 | 49 | #include "process-util.h" |
6eb7c172 | 50 | #include "signal-util.h" |
3ffd4af2 | 51 | #include "strv.h" |
a07c35c3 | 52 | #include "terminal-util.h" |
ee104e11 | 53 | #include "user-util.h" |
9444b1f2 | 54 | |
c3350683 LP |
55 | static int property_get_state( |
56 | sd_bus *bus, | |
57 | const char *path, | |
58 | const char *interface, | |
59 | const char *property, | |
60 | sd_bus_message *reply, | |
ebcf1f97 LP |
61 | void *userdata, |
62 | sd_bus_error *error) { | |
c3350683 LP |
63 | |
64 | Machine *m = userdata; | |
fb6becb4 | 65 | const char *state; |
c3350683 | 66 | int r; |
fb6becb4 | 67 | |
c3350683 LP |
68 | assert(bus); |
69 | assert(reply); | |
fb6becb4 LP |
70 | assert(m); |
71 | ||
72 | state = machine_state_to_string(machine_get_state(m)); | |
73 | ||
c3350683 LP |
74 | r = sd_bus_message_append_basic(reply, 's', state); |
75 | if (r < 0) | |
76 | return r; | |
fb6becb4 | 77 | |
c3350683 | 78 | return 1; |
fb6becb4 LP |
79 | } |
80 | ||
9b5ed6fe LP |
81 | static int property_get_netif( |
82 | sd_bus *bus, | |
83 | const char *path, | |
84 | const char *interface, | |
85 | const char *property, | |
86 | sd_bus_message *reply, | |
87 | void *userdata, | |
88 | sd_bus_error *error) { | |
89 | ||
90 | Machine *m = userdata; | |
9b5ed6fe LP |
91 | |
92 | assert(bus); | |
93 | assert(reply); | |
94 | assert(m); | |
95 | ||
96 | assert_cc(sizeof(int) == sizeof(int32_t)); | |
97 | ||
0f826101 | 98 | return sd_bus_message_append_array(reply, 'i', m->netif, m->n_netif * sizeof(int)); |
9b5ed6fe LP |
99 | } |
100 | ||
c3350683 | 101 | static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_class, machine_class, MachineClass); |
9444b1f2 | 102 | |
19070062 | 103 | int bus_machine_method_terminate(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
c3350683 LP |
104 | Machine *m = userdata; |
105 | int r; | |
9444b1f2 | 106 | |
c3350683 LP |
107 | assert(message); |
108 | assert(m); | |
9444b1f2 | 109 | |
70244d1d LP |
110 | r = bus_verify_polkit_async( |
111 | message, | |
112 | CAP_KILL, | |
113 | "org.freedesktop.machine1.manage-machines", | |
403ed0e5 | 114 | NULL, |
70244d1d | 115 | false, |
c529695e | 116 | UID_INVALID, |
70244d1d LP |
117 | &m->manager->polkit_registry, |
118 | error); | |
119 | if (r < 0) | |
120 | return r; | |
121 | if (r == 0) | |
122 | return 1; /* Will call us back */ | |
123 | ||
c3350683 LP |
124 | r = machine_stop(m); |
125 | if (r < 0) | |
ebcf1f97 | 126 | return r; |
9444b1f2 | 127 | |
df2d202e | 128 | return sd_bus_reply_method_return(message, NULL); |
9444b1f2 LP |
129 | } |
130 | ||
19070062 | 131 | int bus_machine_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
c3350683 LP |
132 | Machine *m = userdata; |
133 | const char *swho; | |
134 | int32_t signo; | |
135 | KillWho who; | |
9444b1f2 LP |
136 | int r; |
137 | ||
9444b1f2 | 138 | assert(message); |
c3350683 | 139 | assert(m); |
9444b1f2 | 140 | |
c3350683 LP |
141 | r = sd_bus_message_read(message, "si", &swho, &signo); |
142 | if (r < 0) | |
ebcf1f97 | 143 | return r; |
9444b1f2 | 144 | |
c3350683 LP |
145 | if (isempty(swho)) |
146 | who = KILL_ALL; | |
147 | else { | |
148 | who = kill_who_from_string(swho); | |
149 | if (who < 0) | |
ebcf1f97 | 150 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid kill parameter '%s'", swho); |
9444b1f2 LP |
151 | } |
152 | ||
6eb7c172 | 153 | if (!SIGNAL_VALID(signo)) |
ebcf1f97 | 154 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo); |
9444b1f2 | 155 | |
70244d1d LP |
156 | r = bus_verify_polkit_async( |
157 | message, | |
158 | CAP_KILL, | |
159 | "org.freedesktop.machine1.manage-machines", | |
403ed0e5 | 160 | NULL, |
70244d1d | 161 | false, |
c529695e | 162 | UID_INVALID, |
70244d1d LP |
163 | &m->manager->polkit_registry, |
164 | error); | |
165 | if (r < 0) | |
166 | return r; | |
167 | if (r == 0) | |
168 | return 1; /* Will call us back */ | |
169 | ||
c3350683 LP |
170 | r = machine_kill(m, who, signo); |
171 | if (r < 0) | |
ebcf1f97 | 172 | return r; |
9444b1f2 | 173 | |
df2d202e | 174 | return sd_bus_reply_method_return(message, NULL); |
9444b1f2 LP |
175 | } |
176 | ||
19070062 | 177 | int bus_machine_method_get_addresses(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
4afd3348 | 178 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
878cd7e9 | 179 | Machine *m = userdata; |
878cd7e9 LP |
180 | int r; |
181 | ||
878cd7e9 LP |
182 | assert(message); |
183 | assert(m); | |
184 | ||
fbe55073 | 185 | r = sd_bus_message_new_method_return(message, &reply); |
878cd7e9 | 186 | if (r < 0) |
c7abe32b | 187 | return r; |
878cd7e9 | 188 | |
fbe55073 | 189 | r = sd_bus_message_open_container(reply, 'a', "(iay)"); |
878cd7e9 | 190 | if (r < 0) |
c7abe32b | 191 | return r; |
878cd7e9 | 192 | |
fbe55073 | 193 | switch (m->class) { |
878cd7e9 | 194 | |
fbe55073 | 195 | case MACHINE_HOST: { |
496a5a69 LP |
196 | _cleanup_free_ struct local_address *addresses = NULL; |
197 | struct local_address *a; | |
fbe55073 | 198 | int n, i; |
878cd7e9 | 199 | |
1d050e1e | 200 | n = local_addresses(NULL, 0, AF_UNSPEC, &addresses); |
496a5a69 | 201 | if (n < 0) |
fbe55073 | 202 | return n; |
878cd7e9 | 203 | |
496a5a69 | 204 | for (a = addresses, i = 0; i < n; a++, i++) { |
878cd7e9 | 205 | |
fbe55073 | 206 | r = sd_bus_message_open_container(reply, 'r', "iay"); |
878cd7e9 | 207 | if (r < 0) |
fbe55073 | 208 | return r; |
496a5a69 | 209 | |
fbe55073 LP |
210 | r = sd_bus_message_append(reply, "i", addresses[i].family); |
211 | if (r < 0) | |
212 | return r; | |
878cd7e9 | 213 | |
fbe55073 LP |
214 | r = sd_bus_message_append_array(reply, 'y', &addresses[i].address, FAMILY_ADDRESS_SIZE(addresses[i].family)); |
215 | if (r < 0) | |
216 | return r; | |
878cd7e9 | 217 | |
fbe55073 LP |
218 | r = sd_bus_message_close_container(reply); |
219 | if (r < 0) | |
220 | return r; | |
221 | } | |
878cd7e9 | 222 | |
fbe55073 LP |
223 | break; |
224 | } | |
878cd7e9 | 225 | |
fbe55073 LP |
226 | case MACHINE_CONTAINER: { |
227 | _cleanup_close_pair_ int pair[2] = { -1, -1 }; | |
228 | _cleanup_free_ char *us = NULL, *them = NULL; | |
229 | _cleanup_close_ int netns_fd = -1; | |
230 | const char *p; | |
fbe55073 | 231 | pid_t child; |
878cd7e9 | 232 | |
fbe55073 LP |
233 | r = readlink_malloc("/proc/self/ns/net", &us); |
234 | if (r < 0) | |
235 | return r; | |
878cd7e9 | 236 | |
fbe55073 LP |
237 | p = procfs_file_alloca(m->leader, "ns/net"); |
238 | r = readlink_malloc(p, &them); | |
878cd7e9 | 239 | if (r < 0) |
c7abe32b | 240 | return r; |
878cd7e9 | 241 | |
fbe55073 LP |
242 | if (streq(us, them)) |
243 | return sd_bus_error_setf(error, BUS_ERROR_NO_PRIVATE_NETWORKING, "Machine %s does not use private networking", m->name); | |
244 | ||
245 | r = namespace_open(m->leader, NULL, NULL, &netns_fd, NULL, NULL); | |
878cd7e9 | 246 | if (r < 0) |
c7abe32b | 247 | return r; |
878cd7e9 | 248 | |
fbe55073 LP |
249 | if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, pair) < 0) |
250 | return -errno; | |
251 | ||
4c253ed1 LP |
252 | r = safe_fork("(sd-addr)", FORK_RESET_SIGNALS|FORK_DEATHSIG, &child); |
253 | if (r < 0) | |
254 | return sd_bus_error_set_errnof(error, r, "Failed to fork(): %m"); | |
255 | if (r == 0) { | |
fbe55073 LP |
256 | _cleanup_free_ struct local_address *addresses = NULL; |
257 | struct local_address *a; | |
258 | int i, n; | |
259 | ||
260 | pair[0] = safe_close(pair[0]); | |
261 | ||
262 | r = namespace_enter(-1, -1, netns_fd, -1, -1); | |
263 | if (r < 0) | |
264 | _exit(EXIT_FAILURE); | |
265 | ||
266 | n = local_addresses(NULL, 0, AF_UNSPEC, &addresses); | |
267 | if (n < 0) | |
268 | _exit(EXIT_FAILURE); | |
878cd7e9 | 269 | |
fbe55073 LP |
270 | for (a = addresses, i = 0; i < n; a++, i++) { |
271 | struct iovec iov[2] = { | |
272 | { .iov_base = &a->family, .iov_len = sizeof(a->family) }, | |
273 | { .iov_base = &a->address, .iov_len = FAMILY_ADDRESS_SIZE(a->family) }, | |
274 | }; | |
878cd7e9 | 275 | |
fbe55073 LP |
276 | r = writev(pair[1], iov, 2); |
277 | if (r < 0) | |
278 | _exit(EXIT_FAILURE); | |
279 | } | |
878cd7e9 | 280 | |
fbe55073 | 281 | pair[1] = safe_close(pair[1]); |
878cd7e9 | 282 | |
fbe55073 | 283 | _exit(EXIT_SUCCESS); |
878cd7e9 | 284 | } |
878cd7e9 | 285 | |
fbe55073 LP |
286 | pair[1] = safe_close(pair[1]); |
287 | ||
288 | for (;;) { | |
289 | int family; | |
290 | ssize_t n; | |
291 | union in_addr_union in_addr; | |
292 | struct iovec iov[2]; | |
293 | struct msghdr mh = { | |
294 | .msg_iov = iov, | |
295 | .msg_iovlen = 2, | |
296 | }; | |
297 | ||
298 | iov[0] = (struct iovec) { .iov_base = &family, .iov_len = sizeof(family) }; | |
299 | iov[1] = (struct iovec) { .iov_base = &in_addr, .iov_len = sizeof(in_addr) }; | |
300 | ||
301 | n = recvmsg(pair[0], &mh, 0); | |
302 | if (n < 0) | |
303 | return -errno; | |
304 | if ((size_t) n < sizeof(family)) | |
305 | break; | |
306 | ||
307 | r = sd_bus_message_open_container(reply, 'r', "iay"); | |
308 | if (r < 0) | |
309 | return r; | |
310 | ||
311 | r = sd_bus_message_append(reply, "i", family); | |
312 | if (r < 0) | |
313 | return r; | |
314 | ||
315 | switch (family) { | |
316 | ||
317 | case AF_INET: | |
318 | if (n != sizeof(struct in_addr) + sizeof(family)) | |
319 | return -EIO; | |
320 | ||
321 | r = sd_bus_message_append_array(reply, 'y', &in_addr.in, sizeof(in_addr.in)); | |
322 | break; | |
323 | ||
324 | case AF_INET6: | |
325 | if (n != sizeof(struct in6_addr) + sizeof(family)) | |
326 | return -EIO; | |
327 | ||
328 | r = sd_bus_message_append_array(reply, 'y', &in_addr.in6, sizeof(in_addr.in6)); | |
329 | break; | |
330 | } | |
331 | if (r < 0) | |
332 | return r; | |
333 | ||
334 | r = sd_bus_message_close_container(reply); | |
335 | if (r < 0) | |
336 | return r; | |
337 | } | |
338 | ||
2e87a1fd | 339 | r = wait_for_terminate_and_check("(sd-addr)", child, 0); |
878cd7e9 | 340 | if (r < 0) |
c0ffce2b | 341 | return sd_bus_error_set_errnof(error, r, "Failed to wait for child: %m"); |
2e87a1fd | 342 | if (r != EXIT_SUCCESS) |
c0ffce2b | 343 | return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Child died abnormally."); |
fbe55073 | 344 | break; |
878cd7e9 LP |
345 | } |
346 | ||
fbe55073 LP |
347 | default: |
348 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Requesting IP address data is only supported on container machines."); | |
349 | } | |
878cd7e9 LP |
350 | |
351 | r = sd_bus_message_close_container(reply); | |
352 | if (r < 0) | |
c7abe32b | 353 | return r; |
878cd7e9 | 354 | |
9030ca46 | 355 | return sd_bus_send(NULL, reply, NULL); |
878cd7e9 LP |
356 | } |
357 | ||
9153b02b LP |
358 | #define EXIT_NOT_FOUND 2 |
359 | ||
19070062 | 360 | int bus_machine_method_get_os_release(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
717603e3 | 361 | _cleanup_strv_free_ char **l = NULL; |
717603e3 | 362 | Machine *m = userdata; |
717603e3 LP |
363 | int r; |
364 | ||
717603e3 LP |
365 | assert(message); |
366 | assert(m); | |
367 | ||
fbe55073 | 368 | switch (m->class) { |
b4d8ef7c | 369 | |
fbe55073 LP |
370 | case MACHINE_HOST: |
371 | r = load_env_file_pairs(NULL, "/etc/os-release", NULL, &l); | |
372 | if (r < 0) | |
373 | return r; | |
717603e3 | 374 | |
fbe55073 | 375 | break; |
717603e3 | 376 | |
fbe55073 LP |
377 | case MACHINE_CONTAINER: { |
378 | _cleanup_close_ int mntns_fd = -1, root_fd = -1; | |
379 | _cleanup_close_pair_ int pair[2] = { -1, -1 }; | |
380 | _cleanup_fclose_ FILE *f = NULL; | |
fbe55073 | 381 | pid_t child; |
717603e3 | 382 | |
fbe55073 LP |
383 | r = namespace_open(m->leader, NULL, &mntns_fd, NULL, NULL, &root_fd); |
384 | if (r < 0) | |
385 | return r; | |
717603e3 | 386 | |
fbe55073 LP |
387 | if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, pair) < 0) |
388 | return -errno; | |
717603e3 | 389 | |
4c253ed1 LP |
390 | r = safe_fork("(sd-osrel)", FORK_RESET_SIGNALS|FORK_DEATHSIG, &child); |
391 | if (r < 0) | |
392 | return sd_bus_error_set_errnof(error, r, "Failed to fork(): %m"); | |
393 | if (r == 0) { | |
9153b02b | 394 | int fd = -1; |
fbe55073 LP |
395 | |
396 | pair[0] = safe_close(pair[0]); | |
397 | ||
398 | r = namespace_enter(-1, mntns_fd, -1, -1, root_fd); | |
399 | if (r < 0) | |
400 | _exit(EXIT_FAILURE); | |
401 | ||
9153b02b LP |
402 | fd = open("/etc/os-release", O_RDONLY|O_CLOEXEC|O_NOCTTY); |
403 | if (fd < 0 && errno == ENOENT) { | |
404 | fd = open("/usr/lib/os-release", O_RDONLY|O_CLOEXEC|O_NOCTTY); | |
405 | if (fd < 0 && errno == ENOENT) | |
406 | _exit(EXIT_NOT_FOUND); | |
fbe55073 | 407 | } |
9153b02b LP |
408 | if (fd < 0) |
409 | _exit(EXIT_FAILURE); | |
717603e3 | 410 | |
1c876927 | 411 | r = copy_bytes(fd, pair[1], (uint64_t) -1, 0); |
fbe55073 | 412 | if (r < 0) |
717603e3 | 413 | _exit(EXIT_FAILURE); |
fbe55073 LP |
414 | |
415 | _exit(EXIT_SUCCESS); | |
717603e3 LP |
416 | } |
417 | ||
fbe55073 | 418 | pair[1] = safe_close(pair[1]); |
717603e3 | 419 | |
fbe55073 LP |
420 | f = fdopen(pair[0], "re"); |
421 | if (!f) | |
422 | return -errno; | |
717603e3 | 423 | |
fbe55073 | 424 | pair[0] = -1; |
717603e3 | 425 | |
fbe55073 LP |
426 | r = load_env_file_pairs(f, "/etc/os-release", NULL, &l); |
427 | if (r < 0) | |
428 | return r; | |
717603e3 | 429 | |
2e87a1fd | 430 | r = wait_for_terminate_and_check("(sd-osrel)", child, 0); |
fbe55073 | 431 | if (r < 0) |
c0ffce2b | 432 | return sd_bus_error_set_errnof(error, r, "Failed to wait for child: %m"); |
2e87a1fd | 433 | if (r == EXIT_NOT_FOUND) |
9153b02b | 434 | return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Machine does not contain OS release information"); |
2e87a1fd | 435 | if (r != EXIT_SUCCESS) |
c0ffce2b | 436 | return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Child died abnormally."); |
717603e3 | 437 | |
fbe55073 LP |
438 | break; |
439 | } | |
717603e3 | 440 | |
fbe55073 LP |
441 | default: |
442 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Requesting OS release data is only supported on container machines."); | |
443 | } | |
717603e3 | 444 | |
9153b02b | 445 | return bus_reply_pair_array(message, l); |
40205d70 LP |
446 | } |
447 | ||
19070062 | 448 | int bus_machine_method_open_pty(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
4afd3348 | 449 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
5f8cc96a | 450 | _cleanup_free_ char *pty_name = NULL; |
40205d70 | 451 | _cleanup_close_ int master = -1; |
40205d70 | 452 | Machine *m = userdata; |
40205d70 LP |
453 | int r; |
454 | ||
40205d70 LP |
455 | assert(message); |
456 | assert(m); | |
457 | ||
fbe55073 LP |
458 | r = bus_verify_polkit_async( |
459 | message, | |
460 | CAP_SYS_ADMIN, | |
4289c3a7 | 461 | m->class == MACHINE_HOST ? "org.freedesktop.machine1.host-open-pty" : "org.freedesktop.machine1.open-pty", |
403ed0e5 | 462 | NULL, |
fbe55073 LP |
463 | false, |
464 | UID_INVALID, | |
465 | &m->manager->polkit_registry, | |
466 | error); | |
467 | if (r < 0) | |
468 | return r; | |
469 | if (r == 0) | |
470 | return 1; /* Will call us back */ | |
b4d8ef7c | 471 | |
fbe55073 | 472 | master = machine_openpt(m, O_RDWR|O_NOCTTY|O_CLOEXEC); |
5f8cc96a LP |
473 | if (master < 0) |
474 | return master; | |
475 | ||
a07c35c3 | 476 | r = ptsname_namespace(master, &pty_name); |
40205d70 LP |
477 | if (r < 0) |
478 | return r; | |
479 | ||
5f8cc96a LP |
480 | r = sd_bus_message_new_method_return(message, &reply); |
481 | if (r < 0) | |
482 | return r; | |
40205d70 | 483 | |
5f8cc96a LP |
484 | r = sd_bus_message_append(reply, "hs", master, pty_name); |
485 | if (r < 0) | |
486 | return r; | |
40205d70 | 487 | |
9030ca46 | 488 | return sd_bus_send(NULL, reply, NULL); |
5f8cc96a | 489 | } |
40205d70 | 490 | |
385080c0 | 491 | static int container_bus_new(Machine *m, sd_bus_error *error, sd_bus **ret) { |
49af9e13 LP |
492 | int r; |
493 | ||
494 | assert(m); | |
495 | assert(ret); | |
496 | ||
fbe55073 | 497 | switch (m->class) { |
49af9e13 | 498 | |
fbe55073 LP |
499 | case MACHINE_HOST: |
500 | *ret = NULL; | |
501 | break; | |
49af9e13 | 502 | |
fbe55073 | 503 | case MACHINE_CONTAINER: { |
4afd3348 | 504 | _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; |
fbe55073 | 505 | char *address; |
49af9e13 | 506 | |
fbe55073 LP |
507 | r = sd_bus_new(&bus); |
508 | if (r < 0) | |
509 | return r; | |
49af9e13 | 510 | |
fbe55073 LP |
511 | if (asprintf(&address, "x-machine-kernel:pid=%1$" PID_PRI ";x-machine-unix:pid=%1$" PID_PRI, m->leader) < 0) |
512 | return -ENOMEM; | |
513 | ||
514 | bus->address = address; | |
515 | bus->bus_client = true; | |
516 | bus->trusted = false; | |
517 | bus->is_system = true; | |
518 | ||
519 | r = sd_bus_start(bus); | |
385080c0 LP |
520 | if (r == -ENOENT) |
521 | return sd_bus_error_set_errnof(error, r, "There is no system bus in container %s.", m->name); | |
fbe55073 LP |
522 | if (r < 0) |
523 | return r; | |
524 | ||
525 | *ret = bus; | |
526 | bus = NULL; | |
527 | break; | |
528 | } | |
529 | ||
530 | default: | |
531 | return -EOPNOTSUPP; | |
532 | } | |
49af9e13 LP |
533 | |
534 | return 0; | |
535 | } | |
536 | ||
19070062 | 537 | int bus_machine_method_open_login(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
4afd3348 | 538 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
49af9e13 | 539 | _cleanup_free_ char *pty_name = NULL; |
4afd3348 | 540 | _cleanup_(sd_bus_flush_close_unrefp) sd_bus *allocated_bus = NULL; |
5f8cc96a | 541 | _cleanup_close_ int master = -1; |
fbe55073 | 542 | sd_bus *container_bus = NULL; |
5f8cc96a | 543 | Machine *m = userdata; |
49af9e13 | 544 | const char *p, *getty; |
5f8cc96a | 545 | int r; |
40205d70 | 546 | |
19070062 LP |
547 | assert(message); |
548 | assert(m); | |
549 | ||
d04c1fb8 LP |
550 | r = bus_verify_polkit_async( |
551 | message, | |
552 | CAP_SYS_ADMIN, | |
4289c3a7 | 553 | m->class == MACHINE_HOST ? "org.freedesktop.machine1.host-login" : "org.freedesktop.machine1.login", |
403ed0e5 | 554 | NULL, |
d04c1fb8 | 555 | false, |
c529695e | 556 | UID_INVALID, |
d04c1fb8 LP |
557 | &m->manager->polkit_registry, |
558 | error); | |
559 | if (r < 0) | |
560 | return r; | |
561 | if (r == 0) | |
562 | return 1; /* Will call us back */ | |
563 | ||
fbe55073 | 564 | master = machine_openpt(m, O_RDWR|O_NOCTTY|O_CLOEXEC); |
5f8cc96a LP |
565 | if (master < 0) |
566 | return master; | |
40205d70 | 567 | |
a07c35c3 | 568 | r = ptsname_namespace(master, &pty_name); |
40205d70 LP |
569 | if (r < 0) |
570 | return r; | |
40205d70 | 571 | |
5f8cc96a LP |
572 | p = path_startswith(pty_name, "/dev/pts/"); |
573 | if (!p) | |
574 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "PTS name %s is invalid", pty_name); | |
40205d70 | 575 | |
385080c0 | 576 | r = container_bus_new(m, error, &allocated_bus); |
5f8cc96a LP |
577 | if (r < 0) |
578 | return r; | |
40205d70 | 579 | |
fbe55073 LP |
580 | container_bus = allocated_bus ?: m->manager->bus; |
581 | ||
49af9e13 LP |
582 | getty = strjoina("container-getty@", p, ".service"); |
583 | ||
584 | r = sd_bus_call_method( | |
585 | container_bus, | |
586 | "org.freedesktop.systemd1", | |
587 | "/org/freedesktop/systemd1", | |
588 | "org.freedesktop.systemd1.Manager", | |
589 | "StartUnit", | |
590 | error, NULL, | |
591 | "ss", getty, "replace"); | |
592 | if (r < 0) | |
593 | return r; | |
594 | ||
49af9e13 LP |
595 | r = sd_bus_message_new_method_return(message, &reply); |
596 | if (r < 0) | |
597 | return r; | |
40205d70 | 598 | |
49af9e13 | 599 | r = sd_bus_message_append(reply, "hs", master, pty_name); |
5f8cc96a LP |
600 | if (r < 0) |
601 | return r; | |
40205d70 | 602 | |
49af9e13 LP |
603 | return sd_bus_send(NULL, reply, NULL); |
604 | } | |
5f8cc96a | 605 | |
49af9e13 | 606 | int bus_machine_method_open_shell(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
4afd3348 | 607 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL, *tm = NULL; |
49af9e13 | 608 | _cleanup_free_ char *pty_name = NULL; |
4afd3348 | 609 | _cleanup_(sd_bus_flush_close_unrefp) sd_bus *allocated_bus = NULL; |
fbe55073 | 610 | sd_bus *container_bus = NULL; |
40e1f4ea | 611 | _cleanup_close_ int master = -1, slave = -1; |
c46bc7e2 | 612 | _cleanup_strv_free_ char **env = NULL, **args_wire = NULL, **args = NULL; |
49af9e13 LP |
613 | Machine *m = userdata; |
614 | const char *p, *unit, *user, *path, *description, *utmp_id; | |
615 | int r; | |
616 | ||
617 | assert(message); | |
618 | assert(m); | |
619 | ||
620 | r = sd_bus_message_read(message, "ss", &user, &path); | |
621 | if (r < 0) | |
622 | return r; | |
3c6f7c34 | 623 | user = empty_to_null(user); |
c46bc7e2 | 624 | r = sd_bus_message_read_strv(message, &args_wire); |
49af9e13 LP |
625 | if (r < 0) |
626 | return r; | |
c46bc7e2 SL |
627 | if (isempty(path)) { |
628 | path = "/bin/sh"; | |
49af9e13 | 629 | |
c46bc7e2 | 630 | args = new0(char*, 3 + 1); |
49af9e13 LP |
631 | if (!args) |
632 | return -ENOMEM; | |
c46bc7e2 SL |
633 | args[0] = strdup("sh"); |
634 | if (!args[0]) | |
635 | return -ENOMEM; | |
636 | args[1] = strdup("-c"); | |
637 | if (!args[1]) | |
638 | return -ENOMEM; | |
639 | r = asprintf(&args[2], | |
640 | "shell=$(getent passwd %s 2>/dev/null | { IFS=: read _ _ _ _ _ _ x; echo \"$x\"; })\n"\ | |
641 | "exec \"${shell:-/bin/sh}\" -l", /* -l is means --login */ | |
642 | isempty(user) ? "root" : user); | |
643 | if (r < 0) { | |
644 | args[2] = NULL; | |
645 | return -ENOMEM; | |
646 | } | |
647 | } else { | |
648 | if (!path_is_absolute(path)) | |
649 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified path '%s' is not absolute", path); | |
650 | args = args_wire; | |
651 | args_wire = NULL; | |
652 | if (strv_isempty(args)) { | |
653 | args = strv_free(args); | |
654 | ||
655 | args = strv_new(path, NULL); | |
656 | if (!args) | |
657 | return -ENOMEM; | |
658 | } | |
49af9e13 LP |
659 | } |
660 | ||
661 | r = sd_bus_message_read_strv(message, &env); | |
662 | if (r < 0) | |
663 | return r; | |
664 | if (!strv_env_is_valid(env)) | |
665 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments"); | |
666 | ||
49af9e13 LP |
667 | r = bus_verify_polkit_async( |
668 | message, | |
669 | CAP_SYS_ADMIN, | |
4289c3a7 | 670 | m->class == MACHINE_HOST ? "org.freedesktop.machine1.host-shell" : "org.freedesktop.machine1.shell", |
403ed0e5 | 671 | NULL, |
49af9e13 LP |
672 | false, |
673 | UID_INVALID, | |
674 | &m->manager->polkit_registry, | |
675 | error); | |
676 | if (r < 0) | |
677 | return r; | |
678 | if (r == 0) | |
679 | return 1; /* Will call us back */ | |
680 | ||
fbe55073 | 681 | master = machine_openpt(m, O_RDWR|O_NOCTTY|O_CLOEXEC); |
49af9e13 LP |
682 | if (master < 0) |
683 | return master; | |
684 | ||
a07c35c3 | 685 | r = ptsname_namespace(master, &pty_name); |
49af9e13 LP |
686 | if (r < 0) |
687 | return r; | |
688 | ||
689 | p = path_startswith(pty_name, "/dev/pts/"); | |
40e1f4ea LP |
690 | assert(p); |
691 | ||
692 | slave = machine_open_terminal(m, pty_name, O_RDWR|O_NOCTTY|O_CLOEXEC); | |
693 | if (slave < 0) | |
694 | return slave; | |
49af9e13 LP |
695 | |
696 | utmp_id = path_startswith(pty_name, "/dev/"); | |
697 | assert(utmp_id); | |
698 | ||
385080c0 | 699 | r = container_bus_new(m, error, &allocated_bus); |
49af9e13 LP |
700 | if (r < 0) |
701 | return r; | |
702 | ||
fbe55073 LP |
703 | container_bus = allocated_bus ?: m->manager->bus; |
704 | ||
49af9e13 | 705 | r = sd_bus_message_new_method_call( |
5f8cc96a | 706 | container_bus, |
49af9e13 | 707 | &tm, |
5f8cc96a LP |
708 | "org.freedesktop.systemd1", |
709 | "/org/freedesktop/systemd1", | |
710 | "org.freedesktop.systemd1.Manager", | |
49af9e13 LP |
711 | "StartTransientUnit"); |
712 | if (r < 0) | |
713 | return r; | |
714 | ||
49af9e13 | 715 | /* Name and mode */ |
81d62103 | 716 | unit = strjoina("container-shell@", p, ".service"); |
49af9e13 LP |
717 | r = sd_bus_message_append(tm, "ss", unit, "fail"); |
718 | if (r < 0) | |
719 | return r; | |
720 | ||
721 | /* Properties */ | |
722 | r = sd_bus_message_open_container(tm, 'a', "(sv)"); | |
723 | if (r < 0) | |
724 | return r; | |
725 | ||
726 | description = strjoina("Shell for User ", isempty(user) ? "root" : user); | |
727 | r = sd_bus_message_append(tm, | |
40e1f4ea | 728 | "(sv)(sv)(sv)(sv)(sv)(sv)(sv)(sv)(sv)(sv)(sv)(sv)", |
49af9e13 | 729 | "Description", "s", description, |
40e1f4ea LP |
730 | "StandardInputFileDescriptor", "h", slave, |
731 | "StandardOutputFileDescriptor", "h", slave, | |
732 | "StandardErrorFileDescriptor", "h", slave, | |
49af9e13 LP |
733 | "SendSIGHUP", "b", true, |
734 | "IgnoreSIGPIPE", "b", false, | |
735 | "KillMode", "s", "mixed", | |
49af9e13 LP |
736 | "TTYReset", "b", true, |
737 | "UtmpIdentifier", "s", utmp_id, | |
738 | "UtmpMode", "s", "user", | |
5f5d8eab LP |
739 | "PAMName", "s", "login", |
740 | "WorkingDirectory", "s", "-~"); | |
49af9e13 LP |
741 | if (r < 0) |
742 | return r; | |
743 | ||
744 | r = sd_bus_message_append(tm, "(sv)", "User", "s", isempty(user) ? "root" : user); | |
745 | if (r < 0) | |
746 | return r; | |
747 | ||
748 | if (!strv_isempty(env)) { | |
749 | r = sd_bus_message_open_container(tm, 'r', "sv"); | |
750 | if (r < 0) | |
751 | return r; | |
752 | ||
753 | r = sd_bus_message_append(tm, "s", "Environment"); | |
754 | if (r < 0) | |
755 | return r; | |
756 | ||
757 | r = sd_bus_message_open_container(tm, 'v', "as"); | |
758 | if (r < 0) | |
759 | return r; | |
760 | ||
761 | r = sd_bus_message_append_strv(tm, env); | |
762 | if (r < 0) | |
763 | return r; | |
764 | ||
765 | r = sd_bus_message_close_container(tm); | |
766 | if (r < 0) | |
767 | return r; | |
768 | ||
769 | r = sd_bus_message_close_container(tm); | |
770 | if (r < 0) | |
771 | return r; | |
772 | } | |
773 | ||
774 | /* Exec container */ | |
775 | r = sd_bus_message_open_container(tm, 'r', "sv"); | |
776 | if (r < 0) | |
777 | return r; | |
778 | ||
779 | r = sd_bus_message_append(tm, "s", "ExecStart"); | |
780 | if (r < 0) | |
781 | return r; | |
782 | ||
783 | r = sd_bus_message_open_container(tm, 'v', "a(sasb)"); | |
784 | if (r < 0) | |
785 | return r; | |
786 | ||
787 | r = sd_bus_message_open_container(tm, 'a', "(sasb)"); | |
788 | if (r < 0) | |
789 | return r; | |
790 | ||
791 | r = sd_bus_message_open_container(tm, 'r', "sasb"); | |
792 | if (r < 0) | |
793 | return r; | |
794 | ||
795 | r = sd_bus_message_append(tm, "s", path); | |
796 | if (r < 0) | |
797 | return r; | |
798 | ||
799 | r = sd_bus_message_append_strv(tm, args); | |
800 | if (r < 0) | |
801 | return r; | |
802 | ||
803 | r = sd_bus_message_append(tm, "b", true); | |
804 | if (r < 0) | |
805 | return r; | |
806 | ||
807 | r = sd_bus_message_close_container(tm); | |
808 | if (r < 0) | |
809 | return r; | |
810 | ||
811 | r = sd_bus_message_close_container(tm); | |
812 | if (r < 0) | |
813 | return r; | |
814 | ||
815 | r = sd_bus_message_close_container(tm); | |
816 | if (r < 0) | |
817 | return r; | |
818 | ||
819 | r = sd_bus_message_close_container(tm); | |
820 | if (r < 0) | |
821 | return r; | |
822 | ||
823 | r = sd_bus_message_close_container(tm); | |
824 | if (r < 0) | |
825 | return r; | |
826 | ||
827 | /* Auxiliary units */ | |
828 | r = sd_bus_message_append(tm, "a(sa(sv))", 0); | |
829 | if (r < 0) | |
830 | return r; | |
831 | ||
832 | r = sd_bus_call(container_bus, tm, 0, error, NULL); | |
ee451d76 LP |
833 | if (r < 0) |
834 | return r; | |
835 | ||
40e1f4ea LP |
836 | slave = safe_close(slave); |
837 | ||
40205d70 LP |
838 | r = sd_bus_message_new_method_return(message, &reply); |
839 | if (r < 0) | |
840 | return r; | |
841 | ||
ee451d76 | 842 | r = sd_bus_message_append(reply, "hs", master, pty_name); |
40205d70 LP |
843 | if (r < 0) |
844 | return r; | |
717603e3 | 845 | |
9030ca46 | 846 | return sd_bus_send(NULL, reply, NULL); |
717603e3 LP |
847 | } |
848 | ||
19070062 | 849 | int bus_machine_method_bind_mount(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
90adaa25 LP |
850 | _cleanup_close_pair_ int errno_pipe_fd[2] = { -1, -1 }; |
851 | char mount_slave[] = "/tmp/propagate.XXXXXX", *mount_tmp, *mount_outside, *p; | |
852 | bool mount_slave_created = false, mount_slave_mounted = false, | |
853 | mount_tmp_created = false, mount_tmp_mounted = false, | |
854 | mount_outside_created = false, mount_outside_mounted = false; | |
d3590ace LP |
855 | _cleanup_free_ char *chased_src = NULL; |
856 | int read_only, make_file_or_directory; | |
90adaa25 LP |
857 | const char *dest, *src; |
858 | Machine *m = userdata; | |
d3590ace | 859 | struct stat st; |
d3590ace | 860 | pid_t child; |
7f43928b | 861 | uid_t uid; |
90adaa25 LP |
862 | int r; |
863 | ||
19070062 LP |
864 | assert(message); |
865 | assert(m); | |
866 | ||
90adaa25 LP |
867 | if (m->class != MACHINE_CONTAINER) |
868 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Bind mounting is only supported on container machines."); | |
869 | ||
d3590ace | 870 | r = sd_bus_message_read(message, "ssbb", &src, &dest, &read_only, &make_file_or_directory); |
90adaa25 LP |
871 | if (r < 0) |
872 | return r; | |
873 | ||
99be45a4 | 874 | if (!path_is_absolute(src) || !path_is_normalized(src)) |
90adaa25 LP |
875 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Source path must be absolute and not contain ../."); |
876 | ||
877 | if (isempty(dest)) | |
878 | dest = src; | |
99be45a4 | 879 | else if (!path_is_absolute(dest) || !path_is_normalized(dest)) |
c7abe32b | 880 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Destination path must be absolute and not contain ../."); |
90adaa25 | 881 | |
70244d1d LP |
882 | r = bus_verify_polkit_async( |
883 | message, | |
884 | CAP_SYS_ADMIN, | |
885 | "org.freedesktop.machine1.manage-machines", | |
403ed0e5 | 886 | NULL, |
70244d1d | 887 | false, |
c529695e | 888 | UID_INVALID, |
70244d1d LP |
889 | &m->manager->polkit_registry, |
890 | error); | |
891 | if (r < 0) | |
892 | return r; | |
893 | if (r == 0) | |
894 | return 1; /* Will call us back */ | |
895 | ||
7f43928b LP |
896 | r = machine_get_uid_shift(m, &uid); |
897 | if (r < 0) | |
898 | return r; | |
899 | if (uid != 0) | |
900 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Can't bind mount on container with user namespacing applied."); | |
901 | ||
90adaa25 LP |
902 | /* One day, when bind mounting /proc/self/fd/n works across |
903 | * namespace boundaries we should rework this logic to make | |
904 | * use of it... */ | |
905 | ||
906 | p = strjoina("/run/systemd/nspawn/propagate/", m->name, "/"); | |
907 | if (laccess(p, F_OK) < 0) | |
908 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Container does not allow propagation of mount points."); | |
909 | ||
62570f6f | 910 | r = chase_symlinks(src, NULL, CHASE_TRAIL_SLASH, &chased_src); |
d3590ace LP |
911 | if (r < 0) |
912 | return sd_bus_error_set_errnof(error, r, "Failed to resolve source path: %m"); | |
913 | ||
914 | if (lstat(chased_src, &st) < 0) | |
915 | return sd_bus_error_set_errnof(error, errno, "Failed to stat() source path: %m"); | |
916 | if (S_ISLNK(st.st_mode)) /* This shouldn't really happen, given that we just chased the symlinks above, but let's better be safe… */ | |
917 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Source directory can't be a symbolic link"); | |
918 | ||
90adaa25 LP |
919 | /* Our goal is to install a new bind mount into the container, |
920 | possibly read-only. This is irritatingly complex | |
921 | unfortunately, currently. | |
922 | ||
923 | First, we start by creating a private playground in /tmp, | |
924 | that we can mount MS_SLAVE. (Which is necessary, since | |
ecb0573d | 925 | MS_MOVE cannot be applied to mounts with MS_SHARED parent |
90adaa25 LP |
926 | mounts.) */ |
927 | ||
928 | if (!mkdtemp(mount_slave)) | |
929 | return sd_bus_error_set_errnof(error, errno, "Failed to create playground %s: %m", mount_slave); | |
930 | ||
931 | mount_slave_created = true; | |
932 | ||
933 | if (mount(mount_slave, mount_slave, NULL, MS_BIND, NULL) < 0) { | |
934 | r = sd_bus_error_set_errnof(error, errno, "Failed to make bind mount %s: %m", mount_slave); | |
935 | goto finish; | |
936 | } | |
937 | ||
938 | mount_slave_mounted = true; | |
939 | ||
940 | if (mount(NULL, mount_slave, NULL, MS_SLAVE, NULL) < 0) { | |
941 | r = sd_bus_error_set_errnof(error, errno, "Failed to remount slave %s: %m", mount_slave); | |
942 | goto finish; | |
943 | } | |
944 | ||
d3590ace | 945 | /* Second, we mount the source file or directory to a directory inside of our MS_SLAVE playground. */ |
90adaa25 | 946 | mount_tmp = strjoina(mount_slave, "/mount"); |
d3590ace | 947 | if (S_ISDIR(st.st_mode)) |
dae8b82e | 948 | r = mkdir_errno_wrapper(mount_tmp, 0700); |
d3590ace LP |
949 | else |
950 | r = touch(mount_tmp); | |
951 | if (r < 0) { | |
952 | sd_bus_error_set_errnof(error, errno, "Failed to create temporary mount point %s: %m", mount_tmp); | |
90adaa25 LP |
953 | goto finish; |
954 | } | |
955 | ||
956 | mount_tmp_created = true; | |
957 | ||
d3590ace LP |
958 | if (mount(chased_src, mount_tmp, NULL, MS_BIND, NULL) < 0) { |
959 | r = sd_bus_error_set_errnof(error, errno, "Failed to mount %s: %m", chased_src); | |
90adaa25 LP |
960 | goto finish; |
961 | } | |
962 | ||
963 | mount_tmp_mounted = true; | |
964 | ||
965 | /* Third, we remount the new bind mount read-only if requested. */ | |
966 | if (read_only) | |
967 | if (mount(NULL, mount_tmp, NULL, MS_BIND|MS_REMOUNT|MS_RDONLY, NULL) < 0) { | |
968 | r = sd_bus_error_set_errnof(error, errno, "Failed to remount read-only %s: %m", mount_tmp); | |
969 | goto finish; | |
970 | } | |
971 | ||
d3590ace | 972 | /* Fourth, we move the new bind mount into the propagation directory. This way it will appear there read-only |
90adaa25 LP |
973 | * right-away. */ |
974 | ||
975 | mount_outside = strjoina("/run/systemd/nspawn/propagate/", m->name, "/XXXXXX"); | |
d3590ace LP |
976 | if (S_ISDIR(st.st_mode)) |
977 | r = mkdtemp(mount_outside) ? 0 : -errno; | |
978 | else { | |
979 | r = mkostemp_safe(mount_outside); | |
980 | safe_close(r); | |
981 | } | |
982 | if (r < 0) { | |
983 | sd_bus_error_set_errnof(error, errno, "Cannot create propagation file or directory %s: %m", mount_outside); | |
90adaa25 LP |
984 | goto finish; |
985 | } | |
986 | ||
987 | mount_outside_created = true; | |
988 | ||
989 | if (mount(mount_tmp, mount_outside, NULL, MS_MOVE, NULL) < 0) { | |
990 | r = sd_bus_error_set_errnof(error, errno, "Failed to move %s to %s: %m", mount_tmp, mount_outside); | |
991 | goto finish; | |
992 | } | |
993 | ||
994 | mount_outside_mounted = true; | |
995 | mount_tmp_mounted = false; | |
996 | ||
d3590ace LP |
997 | if (S_ISDIR(st.st_mode)) |
998 | (void) rmdir(mount_tmp); | |
999 | else | |
1000 | (void) unlink(mount_tmp); | |
90adaa25 LP |
1001 | mount_tmp_created = false; |
1002 | ||
1003 | (void) umount(mount_slave); | |
1004 | mount_slave_mounted = false; | |
1005 | ||
1006 | (void) rmdir(mount_slave); | |
1007 | mount_slave_created = false; | |
1008 | ||
1009 | if (pipe2(errno_pipe_fd, O_CLOEXEC|O_NONBLOCK) < 0) { | |
1010 | r = sd_bus_error_set_errnof(error, errno, "Failed to create pipe: %m"); | |
1011 | goto finish; | |
1012 | } | |
1013 | ||
4c253ed1 LP |
1014 | r = safe_fork("(sd-bindmnt)", FORK_RESET_SIGNALS, &child); |
1015 | if (r < 0) { | |
1016 | sd_bus_error_set_errnof(error, r, "Failed to fork(): %m"); | |
90adaa25 LP |
1017 | goto finish; |
1018 | } | |
4c253ed1 | 1019 | if (r == 0) { |
90adaa25 LP |
1020 | const char *mount_inside; |
1021 | int mntfd; | |
1022 | const char *q; | |
1023 | ||
1024 | errno_pipe_fd[0] = safe_close(errno_pipe_fd[0]); | |
1025 | ||
1026 | q = procfs_file_alloca(m->leader, "ns/mnt"); | |
1027 | mntfd = open(q, O_RDONLY|O_NOCTTY|O_CLOEXEC); | |
1028 | if (mntfd < 0) { | |
1029 | r = log_error_errno(errno, "Failed to open mount namespace of leader: %m"); | |
1030 | goto child_fail; | |
1031 | } | |
1032 | ||
1033 | if (setns(mntfd, CLONE_NEWNS) < 0) { | |
1034 | r = log_error_errno(errno, "Failed to join namespace of leader: %m"); | |
1035 | goto child_fail; | |
1036 | } | |
1037 | ||
d3590ace LP |
1038 | if (make_file_or_directory) { |
1039 | if (S_ISDIR(st.st_mode)) | |
1040 | (void) mkdir_p(dest, 0755); | |
1041 | else { | |
1042 | (void) mkdir_parents(dest, 0755); | |
1043 | safe_close(open(dest, O_CREAT|O_EXCL|O_WRONLY|O_CLOEXEC|O_NOCTTY, 0600)); | |
1044 | } | |
1045 | } | |
90adaa25 LP |
1046 | |
1047 | /* Fifth, move the mount to the right place inside */ | |
1048 | mount_inside = strjoina("/run/systemd/nspawn/incoming/", basename(mount_outside)); | |
1049 | if (mount(mount_inside, dest, NULL, MS_MOVE, NULL) < 0) { | |
1050 | r = log_error_errno(errno, "Failed to mount: %m"); | |
1051 | goto child_fail; | |
1052 | } | |
1053 | ||
1054 | _exit(EXIT_SUCCESS); | |
1055 | ||
1056 | child_fail: | |
1057 | (void) write(errno_pipe_fd[1], &r, sizeof(r)); | |
1058 | errno_pipe_fd[1] = safe_close(errno_pipe_fd[1]); | |
1059 | ||
1060 | _exit(EXIT_FAILURE); | |
1061 | } | |
1062 | ||
1063 | errno_pipe_fd[1] = safe_close(errno_pipe_fd[1]); | |
1064 | ||
2e87a1fd | 1065 | r = wait_for_terminate_and_check("(sd-bindmnt)", child, 0); |
90adaa25 | 1066 | if (r < 0) { |
c0ffce2b | 1067 | r = sd_bus_error_set_errnof(error, r, "Failed to wait for child: %m"); |
90adaa25 LP |
1068 | goto finish; |
1069 | } | |
2e87a1fd | 1070 | if (r != EXIT_SUCCESS) { |
90adaa25 | 1071 | if (read(errno_pipe_fd[0], &r, sizeof(r)) == sizeof(r)) |
c7abe32b | 1072 | r = sd_bus_error_set_errnof(error, r, "Failed to mount: %m"); |
90adaa25 | 1073 | else |
c0ffce2b | 1074 | r = sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Child failed."); |
90adaa25 LP |
1075 | goto finish; |
1076 | } | |
1077 | ||
1078 | r = sd_bus_reply_method_return(message, NULL); | |
1079 | ||
1080 | finish: | |
1081 | if (mount_outside_mounted) | |
d3590ace LP |
1082 | (void) umount(mount_outside); |
1083 | if (mount_outside_created) { | |
1084 | if (S_ISDIR(st.st_mode)) | |
1085 | (void) rmdir(mount_outside); | |
1086 | else | |
1087 | (void) unlink(mount_outside); | |
1088 | } | |
90adaa25 LP |
1089 | |
1090 | if (mount_tmp_mounted) | |
d3590ace LP |
1091 | (void) umount(mount_tmp); |
1092 | if (mount_tmp_created) { | |
1093 | if (S_ISDIR(st.st_mode)) | |
1094 | (void) rmdir(mount_tmp); | |
1095 | else | |
1096 | (void) unlink(mount_tmp); | |
1097 | } | |
90adaa25 LP |
1098 | |
1099 | if (mount_slave_mounted) | |
d3590ace | 1100 | (void) umount(mount_slave); |
90adaa25 | 1101 | if (mount_slave_created) |
d3590ace | 1102 | (void) rmdir(mount_slave); |
90adaa25 LP |
1103 | |
1104 | return r; | |
1105 | } | |
1106 | ||
19070062 | 1107 | int bus_machine_method_copy(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
0370612e LP |
1108 | const char *src, *dest, *host_path, *container_path, *host_basename, *host_dirname, *container_basename, *container_dirname; |
1109 | _cleanup_close_pair_ int errno_pipe_fd[2] = { -1, -1 }; | |
d01cd401 | 1110 | CopyFlags copy_flags = COPY_REFLINK|COPY_MERGE; |
0370612e LP |
1111 | _cleanup_close_ int hostfd = -1; |
1112 | Machine *m = userdata; | |
0370612e LP |
1113 | bool copy_from; |
1114 | pid_t child; | |
d01cd401 | 1115 | uid_t uid_shift; |
0370612e LP |
1116 | char *t; |
1117 | int r; | |
1118 | ||
19070062 LP |
1119 | assert(message); |
1120 | assert(m); | |
1121 | ||
795c5d31 | 1122 | if (m->manager->n_operations >= OPERATIONS_MAX) |
0370612e LP |
1123 | return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Too many ongoing copies."); |
1124 | ||
1125 | if (m->class != MACHINE_CONTAINER) | |
1126 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Copying files is only supported on container machines."); | |
1127 | ||
1128 | r = sd_bus_message_read(message, "ss", &src, &dest); | |
1129 | if (r < 0) | |
1130 | return r; | |
1131 | ||
d8440176 RM |
1132 | if (!path_is_absolute(src)) |
1133 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Source path must be absolute."); | |
0370612e LP |
1134 | |
1135 | if (isempty(dest)) | |
1136 | dest = src; | |
d8440176 RM |
1137 | else if (!path_is_absolute(dest)) |
1138 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Destination path must be absolute."); | |
0370612e | 1139 | |
70244d1d LP |
1140 | r = bus_verify_polkit_async( |
1141 | message, | |
1142 | CAP_SYS_ADMIN, | |
1143 | "org.freedesktop.machine1.manage-machines", | |
403ed0e5 | 1144 | NULL, |
70244d1d | 1145 | false, |
c529695e | 1146 | UID_INVALID, |
70244d1d LP |
1147 | &m->manager->polkit_registry, |
1148 | error); | |
1149 | if (r < 0) | |
1150 | return r; | |
1151 | if (r == 0) | |
1152 | return 1; /* Will call us back */ | |
1153 | ||
d01cd401 LP |
1154 | r = machine_get_uid_shift(m, &uid_shift); |
1155 | if (r < 0) | |
1156 | return r; | |
1157 | ||
0370612e LP |
1158 | copy_from = strstr(sd_bus_message_get_member(message), "CopyFrom"); |
1159 | ||
1160 | if (copy_from) { | |
1161 | container_path = src; | |
1162 | host_path = dest; | |
1163 | } else { | |
1164 | host_path = src; | |
1165 | container_path = dest; | |
1166 | } | |
1167 | ||
1168 | host_basename = basename(host_path); | |
1169 | t = strdupa(host_path); | |
1170 | host_dirname = dirname(t); | |
1171 | ||
1172 | container_basename = basename(container_path); | |
1173 | t = strdupa(container_path); | |
1174 | container_dirname = dirname(t); | |
1175 | ||
1176 | hostfd = open(host_dirname, O_CLOEXEC|O_RDONLY|O_NOCTTY|O_DIRECTORY); | |
858a109f | 1177 | if (hostfd < 0) |
0370612e LP |
1178 | return sd_bus_error_set_errnof(error, errno, "Failed to open host directory %s: %m", host_dirname); |
1179 | ||
1180 | if (pipe2(errno_pipe_fd, O_CLOEXEC|O_NONBLOCK) < 0) | |
1181 | return sd_bus_error_set_errnof(error, errno, "Failed to create pipe: %m"); | |
1182 | ||
4c253ed1 LP |
1183 | r = safe_fork("(sd-copy)", FORK_RESET_SIGNALS, &child); |
1184 | if (r < 0) | |
1185 | return sd_bus_error_set_errnof(error, r, "Failed to fork(): %m"); | |
1186 | if (r == 0) { | |
0370612e LP |
1187 | int containerfd; |
1188 | const char *q; | |
1189 | int mntfd; | |
1190 | ||
1191 | errno_pipe_fd[0] = safe_close(errno_pipe_fd[0]); | |
1192 | ||
1193 | q = procfs_file_alloca(m->leader, "ns/mnt"); | |
1194 | mntfd = open(q, O_RDONLY|O_NOCTTY|O_CLOEXEC); | |
1195 | if (mntfd < 0) { | |
1196 | r = log_error_errno(errno, "Failed to open mount namespace of leader: %m"); | |
1197 | goto child_fail; | |
1198 | } | |
1199 | ||
1200 | if (setns(mntfd, CLONE_NEWNS) < 0) { | |
1201 | r = log_error_errno(errno, "Failed to join namespace of leader: %m"); | |
1202 | goto child_fail; | |
1203 | } | |
1204 | ||
1205 | containerfd = open(container_dirname, O_CLOEXEC|O_RDONLY|O_NOCTTY|O_DIRECTORY); | |
1206 | if (containerfd < 0) { | |
fe4a1d0f | 1207 | r = log_error_errno(errno, "Failed to open destination directory: %m"); |
0370612e LP |
1208 | goto child_fail; |
1209 | } | |
1210 | ||
d01cd401 LP |
1211 | /* Run the actual copy operation. Note that when an UID shift is set we'll either clamp the UID/GID to |
1212 | * 0 or to the actual UID shift depending on the direction we copy. If no UID shift is set we'll copy | |
1213 | * the UID/GIDs as they are. */ | |
0370612e | 1214 | if (copy_from) |
d01cd401 | 1215 | r = copy_tree_at(containerfd, container_basename, hostfd, host_basename, uid_shift == 0 ? UID_INVALID : 0, uid_shift == 0 ? GID_INVALID : 0, copy_flags); |
0370612e | 1216 | else |
d01cd401 | 1217 | r = copy_tree_at(hostfd, host_basename, containerfd, container_basename, uid_shift == 0 ? UID_INVALID : uid_shift, uid_shift == 0 ? GID_INVALID : uid_shift, copy_flags); |
0370612e LP |
1218 | |
1219 | hostfd = safe_close(hostfd); | |
1220 | containerfd = safe_close(containerfd); | |
1221 | ||
1222 | if (r < 0) { | |
1223 | r = log_error_errno(r, "Failed to copy tree: %m"); | |
1224 | goto child_fail; | |
1225 | } | |
1226 | ||
1227 | _exit(EXIT_SUCCESS); | |
1228 | ||
1229 | child_fail: | |
1230 | (void) write(errno_pipe_fd[1], &r, sizeof(r)); | |
0370612e LP |
1231 | _exit(EXIT_FAILURE); |
1232 | } | |
1233 | ||
1234 | errno_pipe_fd[1] = safe_close(errno_pipe_fd[1]); | |
1235 | ||
795c5d31 | 1236 | /* Copying might take a while, hence install a watch on the child, and return */ |
0370612e | 1237 | |
03c2b288 | 1238 | r = operation_new(m->manager, m, child, message, errno_pipe_fd[0], NULL); |
0370612e | 1239 | if (r < 0) { |
795c5d31 LP |
1240 | (void) sigkill_wait(child); |
1241 | return r; | |
0370612e | 1242 | } |
795c5d31 | 1243 | errno_pipe_fd[0] = -1; |
0370612e LP |
1244 | |
1245 | return 1; | |
1246 | } | |
1247 | ||
ae203207 LP |
1248 | int bus_machine_method_open_root_directory(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1249 | _cleanup_close_ int fd = -1; | |
1250 | Machine *m = userdata; | |
1251 | int r; | |
1252 | ||
1253 | assert(message); | |
1254 | assert(m); | |
1255 | ||
1256 | r = bus_verify_polkit_async( | |
1257 | message, | |
1258 | CAP_SYS_ADMIN, | |
1259 | "org.freedesktop.machine1.manage-machines", | |
1260 | NULL, | |
1261 | false, | |
1262 | UID_INVALID, | |
1263 | &m->manager->polkit_registry, | |
1264 | error); | |
1265 | if (r < 0) | |
1266 | return r; | |
1267 | if (r == 0) | |
1268 | return 1; /* Will call us back */ | |
1269 | ||
1270 | switch (m->class) { | |
1271 | ||
1272 | case MACHINE_HOST: | |
1273 | fd = open("/", O_RDONLY|O_CLOEXEC|O_DIRECTORY); | |
1274 | if (fd < 0) | |
1275 | return -errno; | |
1276 | ||
1277 | break; | |
1278 | ||
1279 | case MACHINE_CONTAINER: { | |
1280 | _cleanup_close_ int mntns_fd = -1, root_fd = -1; | |
1281 | _cleanup_close_pair_ int pair[2] = { -1, -1 }; | |
ae203207 LP |
1282 | pid_t child; |
1283 | ||
1284 | r = namespace_open(m->leader, NULL, &mntns_fd, NULL, NULL, &root_fd); | |
1285 | if (r < 0) | |
1286 | return r; | |
1287 | ||
1288 | if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) < 0) | |
1289 | return -errno; | |
1290 | ||
4c253ed1 LP |
1291 | r = safe_fork("(sd-openroot)", FORK_RESET_SIGNALS|FORK_DEATHSIG, &child); |
1292 | if (r < 0) | |
1293 | return sd_bus_error_set_errnof(error, r, "Failed to fork(): %m"); | |
1294 | if (r == 0) { | |
ae203207 LP |
1295 | _cleanup_close_ int dfd = -1; |
1296 | ||
1297 | pair[0] = safe_close(pair[0]); | |
1298 | ||
1299 | r = namespace_enter(-1, mntns_fd, -1, -1, root_fd); | |
1300 | if (r < 0) | |
1301 | _exit(EXIT_FAILURE); | |
1302 | ||
1303 | dfd = open("/", O_RDONLY|O_CLOEXEC|O_DIRECTORY); | |
1304 | if (dfd < 0) | |
1305 | _exit(EXIT_FAILURE); | |
1306 | ||
1307 | r = send_one_fd(pair[1], dfd, 0); | |
1308 | dfd = safe_close(dfd); | |
1309 | if (r < 0) | |
1310 | _exit(EXIT_FAILURE); | |
1311 | ||
1312 | _exit(EXIT_SUCCESS); | |
1313 | } | |
1314 | ||
1315 | pair[1] = safe_close(pair[1]); | |
1316 | ||
2e87a1fd | 1317 | r = wait_for_terminate_and_check("(sd-openroot)", child, 0); |
ae203207 LP |
1318 | if (r < 0) |
1319 | return sd_bus_error_set_errnof(error, r, "Failed to wait for child: %m"); | |
2e87a1fd | 1320 | if (r != EXIT_SUCCESS) |
ae203207 LP |
1321 | return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Child died abnormally."); |
1322 | ||
1323 | fd = receive_one_fd(pair[0], MSG_DONTWAIT); | |
1324 | if (fd < 0) | |
1325 | return fd; | |
1326 | ||
1327 | break; | |
1328 | } | |
1329 | ||
1330 | default: | |
1331 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Opening the root directory is only supported on container machines."); | |
1332 | } | |
1333 | ||
1334 | return sd_bus_reply_method_return(message, "h", fd); | |
1335 | } | |
1336 | ||
3401419b LP |
1337 | int bus_machine_method_get_uid_shift(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1338 | Machine *m = userdata; | |
1339 | uid_t shift = 0; | |
1340 | int r; | |
1341 | ||
1342 | assert(message); | |
1343 | assert(m); | |
1344 | ||
1345 | /* You wonder why this is a method and not a property? Well, properties are not supposed to return errors, but | |
1346 | * we kinda have to for this. */ | |
1347 | ||
1348 | if (m->class == MACHINE_HOST) | |
1349 | return sd_bus_reply_method_return(message, "u", UINT32_C(0)); | |
1350 | ||
1351 | if (m->class != MACHINE_CONTAINER) | |
1352 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "UID/GID shift may only be determined for container machines."); | |
1353 | ||
1354 | r = machine_get_uid_shift(m, &shift); | |
1355 | if (r == -ENXIO) | |
1356 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Machine %s uses a complex UID/GID mapping, cannot determine shift", m->name); | |
1357 | if (r < 0) | |
1358 | return r; | |
1359 | ||
1360 | return sd_bus_reply_method_return(message, "u", (uint32_t) shift); | |
1361 | } | |
1362 | ||
c3350683 LP |
1363 | const sd_bus_vtable machine_vtable[] = { |
1364 | SD_BUS_VTABLE_START(0), | |
556089dc | 1365 | SD_BUS_PROPERTY("Name", "s", NULL, offsetof(Machine, name), SD_BUS_VTABLE_PROPERTY_CONST), |
766c94ad | 1366 | SD_BUS_PROPERTY("Id", "ay", bus_property_get_id128, offsetof(Machine, id), SD_BUS_VTABLE_PROPERTY_CONST), |
556089dc LP |
1367 | BUS_PROPERTY_DUAL_TIMESTAMP("Timestamp", offsetof(Machine, timestamp), SD_BUS_VTABLE_PROPERTY_CONST), |
1368 | SD_BUS_PROPERTY("Service", "s", NULL, offsetof(Machine, service), SD_BUS_VTABLE_PROPERTY_CONST), | |
89f7c846 LP |
1369 | SD_BUS_PROPERTY("Unit", "s", NULL, offsetof(Machine, unit), SD_BUS_VTABLE_PROPERTY_CONST), |
1370 | SD_BUS_PROPERTY("Scope", "s", NULL, offsetof(Machine, unit), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN), | |
556089dc LP |
1371 | SD_BUS_PROPERTY("Leader", "u", NULL, offsetof(Machine, leader), SD_BUS_VTABLE_PROPERTY_CONST), |
1372 | SD_BUS_PROPERTY("Class", "s", property_get_class, offsetof(Machine, class), SD_BUS_VTABLE_PROPERTY_CONST), | |
1373 | SD_BUS_PROPERTY("RootDirectory", "s", NULL, offsetof(Machine, root_directory), SD_BUS_VTABLE_PROPERTY_CONST), | |
9b5ed6fe | 1374 | SD_BUS_PROPERTY("NetworkInterfaces", "ai", property_get_netif, 0, SD_BUS_VTABLE_PROPERTY_CONST), |
c3350683 | 1375 | SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0), |
70244d1d LP |
1376 | SD_BUS_METHOD("Terminate", NULL, NULL, bus_machine_method_terminate, SD_BUS_VTABLE_UNPRIVILEGED), |
1377 | SD_BUS_METHOD("Kill", "si", NULL, bus_machine_method_kill, SD_BUS_VTABLE_UNPRIVILEGED), | |
0dd25fb9 | 1378 | SD_BUS_METHOD("GetAddresses", NULL, "a(iay)", bus_machine_method_get_addresses, SD_BUS_VTABLE_UNPRIVILEGED), |
717603e3 | 1379 | SD_BUS_METHOD("GetOSRelease", NULL, "a{ss}", bus_machine_method_get_os_release, SD_BUS_VTABLE_UNPRIVILEGED), |
3401419b | 1380 | SD_BUS_METHOD("GetUIDShift", NULL, "u", bus_machine_method_get_uid_shift, SD_BUS_VTABLE_UNPRIVILEGED), |
fbe55073 | 1381 | SD_BUS_METHOD("OpenPTY", NULL, "hs", bus_machine_method_open_pty, SD_BUS_VTABLE_UNPRIVILEGED), |
d04c1fb8 | 1382 | SD_BUS_METHOD("OpenLogin", NULL, "hs", bus_machine_method_open_login, SD_BUS_VTABLE_UNPRIVILEGED), |
49af9e13 | 1383 | SD_BUS_METHOD("OpenShell", "ssasas", "hs", bus_machine_method_open_shell, SD_BUS_VTABLE_UNPRIVILEGED), |
70244d1d LP |
1384 | SD_BUS_METHOD("BindMount", "ssbb", NULL, bus_machine_method_bind_mount, SD_BUS_VTABLE_UNPRIVILEGED), |
1385 | SD_BUS_METHOD("CopyFrom", "ss", NULL, bus_machine_method_copy, SD_BUS_VTABLE_UNPRIVILEGED), | |
1386 | SD_BUS_METHOD("CopyTo", "ss", NULL, bus_machine_method_copy, SD_BUS_VTABLE_UNPRIVILEGED), | |
ae203207 | 1387 | SD_BUS_METHOD("OpenRootDirectory", NULL, "h", bus_machine_method_open_root_directory, SD_BUS_VTABLE_UNPRIVILEGED), |
717603e3 | 1388 | SD_BUS_VTABLE_END |
c3350683 | 1389 | }; |
9444b1f2 | 1390 | |
f00c3121 | 1391 | int machine_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { |
c3350683 LP |
1392 | Manager *m = userdata; |
1393 | Machine *machine; | |
927b1649 | 1394 | int r; |
9444b1f2 | 1395 | |
c3350683 LP |
1396 | assert(bus); |
1397 | assert(path); | |
1398 | assert(interface); | |
1399 | assert(found); | |
1400 | assert(m); | |
9444b1f2 | 1401 | |
927b1649 | 1402 | if (streq(path, "/org/freedesktop/machine1/machine/self")) { |
4afd3348 | 1403 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
927b1649 LP |
1404 | sd_bus_message *message; |
1405 | pid_t pid; | |
9444b1f2 | 1406 | |
19befb2d | 1407 | message = sd_bus_get_current_message(bus); |
927b1649 LP |
1408 | if (!message) |
1409 | return 0; | |
1410 | ||
5b12334d | 1411 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds); |
927b1649 | 1412 | if (r < 0) |
5b12334d LP |
1413 | return r; |
1414 | ||
1415 | r = sd_bus_creds_get_pid(creds, &pid); | |
1416 | if (r < 0) | |
1417 | return r; | |
9444b1f2 | 1418 | |
927b1649 LP |
1419 | r = manager_get_machine_by_pid(m, pid, &machine); |
1420 | if (r <= 0) | |
1421 | return 0; | |
1422 | } else { | |
1423 | _cleanup_free_ char *e = NULL; | |
1424 | const char *p; | |
1425 | ||
1426 | p = startswith(path, "/org/freedesktop/machine1/machine/"); | |
1427 | if (!p) | |
1428 | return 0; | |
1429 | ||
a6278b88 | 1430 | e = bus_label_unescape(p); |
927b1649 LP |
1431 | if (!e) |
1432 | return -ENOMEM; | |
1433 | ||
1434 | machine = hashmap_get(m->machines, e); | |
1435 | if (!machine) | |
1436 | return 0; | |
1437 | } | |
9444b1f2 | 1438 | |
c3350683 LP |
1439 | *found = machine; |
1440 | return 1; | |
9444b1f2 LP |
1441 | } |
1442 | ||
9444b1f2 LP |
1443 | char *machine_bus_path(Machine *m) { |
1444 | _cleanup_free_ char *e = NULL; | |
1445 | ||
1446 | assert(m); | |
1447 | ||
a6278b88 | 1448 | e = bus_label_escape(m->name); |
9444b1f2 LP |
1449 | if (!e) |
1450 | return NULL; | |
1451 | ||
1ee306e1 | 1452 | return strappend("/org/freedesktop/machine1/machine/", e); |
9444b1f2 LP |
1453 | } |
1454 | ||
f00c3121 | 1455 | int machine_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { |
927b1649 LP |
1456 | _cleanup_strv_free_ char **l = NULL; |
1457 | Machine *machine = NULL; | |
1458 | Manager *m = userdata; | |
1459 | Iterator i; | |
1460 | int r; | |
1461 | ||
1462 | assert(bus); | |
1463 | assert(path); | |
1464 | assert(nodes); | |
1465 | ||
1466 | HASHMAP_FOREACH(machine, m->machines, i) { | |
1467 | char *p; | |
1468 | ||
1469 | p = machine_bus_path(machine); | |
1470 | if (!p) | |
1471 | return -ENOMEM; | |
1472 | ||
6e18964d ZJS |
1473 | r = strv_consume(&l, p); |
1474 | if (r < 0) | |
927b1649 | 1475 | return r; |
927b1649 LP |
1476 | } |
1477 | ||
ae2a15bc | 1478 | *nodes = TAKE_PTR(l); |
927b1649 LP |
1479 | |
1480 | return 1; | |
1481 | } | |
1482 | ||
9444b1f2 | 1483 | int machine_send_signal(Machine *m, bool new_machine) { |
9444b1f2 LP |
1484 | _cleanup_free_ char *p = NULL; |
1485 | ||
1486 | assert(m); | |
1487 | ||
9444b1f2 LP |
1488 | p = machine_bus_path(m); |
1489 | if (!p) | |
1490 | return -ENOMEM; | |
1491 | ||
c3350683 LP |
1492 | return sd_bus_emit_signal( |
1493 | m->manager->bus, | |
1494 | "/org/freedesktop/machine1", | |
1495 | "org.freedesktop.machine1.Manager", | |
1496 | new_machine ? "MachineNew" : "MachineRemoved", | |
1497 | "so", m->name, p); | |
9444b1f2 LP |
1498 | } |
1499 | ||
c3350683 | 1500 | int machine_send_create_reply(Machine *m, sd_bus_error *error) { |
4afd3348 | 1501 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *c = NULL; |
9444b1f2 LP |
1502 | _cleanup_free_ char *p = NULL; |
1503 | ||
1504 | assert(m); | |
1505 | ||
fb6becb4 LP |
1506 | if (!m->create_message) |
1507 | return 0; | |
1508 | ||
c3350683 LP |
1509 | c = m->create_message; |
1510 | m->create_message = NULL; | |
fb6becb4 | 1511 | |
a658cafa | 1512 | if (error) |
df2d202e | 1513 | return sd_bus_reply_method_error(c, error); |
a658cafa | 1514 | |
76e66585 LP |
1515 | /* Update the machine state file before we notify the client |
1516 | * about the result. */ | |
1517 | machine_save(m); | |
1518 | ||
c3350683 LP |
1519 | p = machine_bus_path(m); |
1520 | if (!p) | |
1521 | return -ENOMEM; | |
fb6becb4 | 1522 | |
df2d202e | 1523 | return sd_bus_reply_method_return(c, "o", p); |
fb6becb4 | 1524 | } |