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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
9444b1f2 | 2 | |
66cb2fde | 3 | #include <errno.h> |
9444b1f2 LP |
4 | #include <string.h> |
5 | #include <unistd.h> | |
ca78ad1d | 6 | #include <sys/stat.h> |
9444b1f2 | 7 | |
c3350683 | 8 | #include "sd-messages.h" |
fb6becb4 | 9 | |
b5efdb8a | 10 | #include "alloc-util.h" |
66cb2fde LP |
11 | #include "bus-error.h" |
12 | #include "bus-util.h" | |
686d13b9 | 13 | #include "env-file.h" |
66855de7 | 14 | #include "errno-util.h" |
4f5dd394 | 15 | #include "escape.h" |
cf0fbc49 | 16 | #include "extract-word.h" |
3ffd4af2 | 17 | #include "fd-util.h" |
9444b1f2 | 18 | #include "fileio.h" |
f97b34a6 | 19 | #include "format-util.h" |
66cb2fde | 20 | #include "hashmap.h" |
4f5dd394 | 21 | #include "machine-dbus.h" |
3ffd4af2 | 22 | #include "machine.h" |
66cb2fde | 23 | #include "mkdir.h" |
6bedfcbb | 24 | #include "parse-util.h" |
b910cc72 | 25 | #include "path-util.h" |
4a0b58c4 | 26 | #include "process-util.h" |
d68c645b | 27 | #include "serialize.h" |
9444b1f2 | 28 | #include "special.h" |
3401419b | 29 | #include "stdio-util.h" |
8b43440b | 30 | #include "string-table.h" |
66cb2fde | 31 | #include "terminal-util.h" |
e4de7287 | 32 | #include "tmpfile-util.h" |
fb6becb4 | 33 | #include "unit-name.h" |
3a664727 | 34 | #include "user-util.h" |
66cb2fde | 35 | #include "util.h" |
9444b1f2 | 36 | |
fbe55073 | 37 | Machine* machine_new(Manager *manager, MachineClass class, const char *name) { |
9444b1f2 LP |
38 | Machine *m; |
39 | ||
40 | assert(manager); | |
fbe55073 | 41 | assert(class < _MACHINE_CLASS_MAX); |
9444b1f2 LP |
42 | assert(name); |
43 | ||
fbe55073 LP |
44 | /* Passing class == _MACHINE_CLASS_INVALID here is fine. It |
45 | * means as much as "we don't know yet", and that we'll figure | |
46 | * it out later when loading the state file. */ | |
47 | ||
9444b1f2 LP |
48 | m = new0(Machine, 1); |
49 | if (!m) | |
50 | return NULL; | |
51 | ||
52 | m->name = strdup(name); | |
53 | if (!m->name) | |
54 | goto fail; | |
55 | ||
fbe55073 | 56 | if (class != MACHINE_HOST) { |
b910cc72 | 57 | m->state_file = path_join("/run/systemd/machines", m->name); |
fbe55073 LP |
58 | if (!m->state_file) |
59 | goto fail; | |
60 | } | |
61 | ||
62 | m->class = class; | |
9444b1f2 LP |
63 | |
64 | if (hashmap_put(manager->machines, m->name, m) < 0) | |
65 | goto fail; | |
66 | ||
9444b1f2 LP |
67 | m->manager = manager; |
68 | ||
69 | return m; | |
70 | ||
71 | fail: | |
72 | free(m->state_file); | |
73 | free(m->name); | |
6b430fdb | 74 | return mfree(m); |
9444b1f2 LP |
75 | } |
76 | ||
bb1a05d6 YW |
77 | Machine* machine_free(Machine *m) { |
78 | if (!m) | |
79 | return NULL; | |
9444b1f2 | 80 | |
0370612e | 81 | while (m->operations) |
795c5d31 | 82 | operation_free(m->operations); |
0370612e | 83 | |
9444b1f2 | 84 | if (m->in_gc_queue) |
71fda00f | 85 | LIST_REMOVE(gc_queue, m->manager->machine_gc_queue, m); |
9444b1f2 | 86 | |
9b420b3c | 87 | machine_release_unit(m); |
9444b1f2 | 88 | |
fb6becb4 LP |
89 | free(m->scope_job); |
90 | ||
9b420b3c | 91 | (void) hashmap_remove(m->manager->machines, m->name); |
9444b1f2 | 92 | |
fbe55073 LP |
93 | if (m->manager->host_machine == m) |
94 | m->manager->host_machine = NULL; | |
95 | ||
d3e84ddb | 96 | if (m->leader > 0) |
4a0b58c4 | 97 | (void) hashmap_remove_value(m->manager->machine_leaders, PID_TO_PTR(m->leader), m); |
d3e84ddb | 98 | |
c3350683 | 99 | sd_bus_message_unref(m->create_message); |
fb6becb4 | 100 | |
9444b1f2 LP |
101 | free(m->name); |
102 | free(m->state_file); | |
103 | free(m->service); | |
9444b1f2 | 104 | free(m->root_directory); |
9b5ed6fe | 105 | free(m->netif); |
bb1a05d6 | 106 | return mfree(m); |
9444b1f2 LP |
107 | } |
108 | ||
109 | int machine_save(Machine *m) { | |
110 | _cleanup_free_ char *temp_path = NULL; | |
111 | _cleanup_fclose_ FILE *f = NULL; | |
112 | int r; | |
113 | ||
114 | assert(m); | |
fbe55073 LP |
115 | |
116 | if (!m->state_file) | |
117 | return 0; | |
9444b1f2 LP |
118 | |
119 | if (!m->started) | |
120 | return 0; | |
121 | ||
37c1d5e9 | 122 | r = mkdir_safe_label("/run/systemd/machines", 0755, 0, 0, MKDIR_WARN_MODE); |
9444b1f2 | 123 | if (r < 0) |
dacd6cee | 124 | goto fail; |
9444b1f2 LP |
125 | |
126 | r = fopen_temporary(m->state_file, &f, &temp_path); | |
127 | if (r < 0) | |
dacd6cee | 128 | goto fail; |
9444b1f2 | 129 | |
dacd6cee | 130 | (void) fchmod(fileno(f), 0644); |
9444b1f2 LP |
131 | |
132 | fprintf(f, | |
133 | "# This is private data. Do not parse.\n" | |
134 | "NAME=%s\n", | |
135 | m->name); | |
136 | ||
ca5405bb LP |
137 | if (m->unit) { |
138 | _cleanup_free_ char *escaped; | |
139 | ||
140 | escaped = cescape(m->unit); | |
141 | if (!escaped) { | |
142 | r = -ENOMEM; | |
dacd6cee | 143 | goto fail; |
ca5405bb LP |
144 | } |
145 | ||
146 | fprintf(f, "SCOPE=%s\n", escaped); /* We continue to call this "SCOPE=" because it is internal only, and we want to stay compatible with old files */ | |
147 | } | |
fb6becb4 LP |
148 | |
149 | if (m->scope_job) | |
150 | fprintf(f, "SCOPE_JOB=%s\n", m->scope_job); | |
9444b1f2 | 151 | |
ca5405bb LP |
152 | if (m->service) { |
153 | _cleanup_free_ char *escaped; | |
9444b1f2 | 154 | |
ca5405bb LP |
155 | escaped = cescape(m->service); |
156 | if (!escaped) { | |
157 | r = -ENOMEM; | |
dacd6cee | 158 | goto fail; |
ca5405bb LP |
159 | } |
160 | fprintf(f, "SERVICE=%s\n", escaped); | |
161 | } | |
162 | ||
163 | if (m->root_directory) { | |
164 | _cleanup_free_ char *escaped; | |
165 | ||
166 | escaped = cescape(m->root_directory); | |
167 | if (!escaped) { | |
168 | r = -ENOMEM; | |
dacd6cee | 169 | goto fail; |
ca5405bb LP |
170 | } |
171 | fprintf(f, "ROOT=%s\n", escaped); | |
172 | } | |
9444b1f2 | 173 | |
3bbaff3e | 174 | if (!sd_id128_is_null(m->id)) |
9444b1f2 LP |
175 | fprintf(f, "ID=" SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(m->id)); |
176 | ||
177 | if (m->leader != 0) | |
90b2de37 | 178 | fprintf(f, "LEADER="PID_FMT"\n", m->leader); |
9444b1f2 LP |
179 | |
180 | if (m->class != _MACHINE_CLASS_INVALID) | |
181 | fprintf(f, "CLASS=%s\n", machine_class_to_string(m->class)); | |
182 | ||
183 | if (dual_timestamp_is_set(&m->timestamp)) | |
184 | fprintf(f, | |
90b2de37 ZJS |
185 | "REALTIME="USEC_FMT"\n" |
186 | "MONOTONIC="USEC_FMT"\n", | |
187 | m->timestamp.realtime, | |
188 | m->timestamp.monotonic); | |
9444b1f2 | 189 | |
9b5ed6fe | 190 | if (m->n_netif > 0) { |
68e16e9c | 191 | size_t i; |
9b5ed6fe | 192 | |
0d536673 | 193 | fputs("NETIF=", f); |
9b5ed6fe LP |
194 | |
195 | for (i = 0; i < m->n_netif; i++) { | |
196 | if (i != 0) | |
0d536673 | 197 | fputc(' ', f); |
9b5ed6fe LP |
198 | |
199 | fprintf(f, "%i", m->netif[i]); | |
200 | } | |
201 | ||
0d536673 | 202 | fputc('\n', f); |
9b5ed6fe LP |
203 | } |
204 | ||
034753ac LP |
205 | r = fflush_and_check(f); |
206 | if (r < 0) | |
dacd6cee | 207 | goto fail; |
9444b1f2 | 208 | |
034753ac | 209 | if (rename(temp_path, m->state_file) < 0) { |
9444b1f2 | 210 | r = -errno; |
dacd6cee | 211 | goto fail; |
9444b1f2 LP |
212 | } |
213 | ||
89f7c846 LP |
214 | if (m->unit) { |
215 | char *sl; | |
216 | ||
217 | /* Create a symlink from the unit name to the machine | |
218 | * name, so that we can quickly find the machine for | |
e62d9b81 | 219 | * each given unit. Ignore error. */ |
63c372cb | 220 | sl = strjoina("/run/systemd/machines/unit:", m->unit); |
e62d9b81 | 221 | (void) symlink(m->name, sl); |
89f7c846 LP |
222 | } |
223 | ||
dacd6cee | 224 | return 0; |
034753ac | 225 | |
dacd6cee LP |
226 | fail: |
227 | (void) unlink(m->state_file); | |
228 | ||
229 | if (temp_path) | |
230 | (void) unlink(temp_path); | |
9444b1f2 | 231 | |
dacd6cee | 232 | return log_error_errno(r, "Failed to save machine data %s: %m", m->state_file); |
9444b1f2 LP |
233 | } |
234 | ||
89f7c846 LP |
235 | static void machine_unlink(Machine *m) { |
236 | assert(m); | |
237 | ||
238 | if (m->unit) { | |
89f7c846 LP |
239 | char *sl; |
240 | ||
63c372cb | 241 | sl = strjoina("/run/systemd/machines/unit:", m->unit); |
491ac9f2 | 242 | (void) unlink(sl); |
89f7c846 LP |
243 | } |
244 | ||
245 | if (m->state_file) | |
491ac9f2 | 246 | (void) unlink(m->state_file); |
89f7c846 LP |
247 | } |
248 | ||
9444b1f2 | 249 | int machine_load(Machine *m) { |
9b5ed6fe | 250 | _cleanup_free_ char *realtime = NULL, *monotonic = NULL, *id = NULL, *leader = NULL, *class = NULL, *netif = NULL; |
9444b1f2 LP |
251 | int r; |
252 | ||
253 | assert(m); | |
254 | ||
fbe55073 LP |
255 | if (!m->state_file) |
256 | return 0; | |
257 | ||
aa8fbc74 | 258 | r = parse_env_file(NULL, m->state_file, |
89f7c846 | 259 | "SCOPE", &m->unit, |
fb6becb4 | 260 | "SCOPE_JOB", &m->scope_job, |
9444b1f2 | 261 | "SERVICE", &m->service, |
9444b1f2 LP |
262 | "ROOT", &m->root_directory, |
263 | "ID", &id, | |
264 | "LEADER", &leader, | |
265 | "CLASS", &class, | |
266 | "REALTIME", &realtime, | |
267 | "MONOTONIC", &monotonic, | |
13df9c39 | 268 | "NETIF", &netif); |
9444b1f2 LP |
269 | if (r < 0) { |
270 | if (r == -ENOENT) | |
271 | return 0; | |
272 | ||
8d3d7072 | 273 | return log_error_errno(r, "Failed to read %s: %m", m->state_file); |
9444b1f2 LP |
274 | } |
275 | ||
276 | if (id) | |
277 | sd_id128_from_string(id, &m->id); | |
278 | ||
279 | if (leader) | |
280 | parse_pid(leader, &m->leader); | |
281 | ||
282 | if (class) { | |
283 | MachineClass c; | |
284 | ||
285 | c = machine_class_from_string(class); | |
286 | if (c >= 0) | |
287 | m->class = c; | |
288 | } | |
289 | ||
b895a735 | 290 | if (realtime) |
d68c645b | 291 | (void) deserialize_usec(realtime, &m->timestamp.realtime); |
b895a735 | 292 | if (monotonic) |
d68c645b | 293 | (void) deserialize_usec(monotonic, &m->timestamp.monotonic); |
9444b1f2 | 294 | |
9b5ed6fe | 295 | if (netif) { |
75a8fd6a SS |
296 | size_t allocated = 0, nr = 0; |
297 | const char *p; | |
9b5ed6fe LP |
298 | int *ni = NULL; |
299 | ||
75a8fd6a | 300 | p = netif; |
9ed794a3 | 301 | for (;;) { |
75a8fd6a | 302 | _cleanup_free_ char *word = NULL; |
9b5ed6fe LP |
303 | int ifi; |
304 | ||
75a8fd6a | 305 | r = extract_first_word(&p, &word, NULL, 0); |
75a8fd6a SS |
306 | if (r == 0) |
307 | break; | |
6a37c684 | 308 | if (r == -ENOMEM) |
52278ad3 | 309 | return log_oom(); |
6a37c684 | 310 | if (r < 0) { |
52278ad3 | 311 | log_warning_errno(r, "Failed to parse NETIF: %s", netif); |
6a37c684 | 312 | break; |
52278ad3 | 313 | } |
75a8fd6a | 314 | |
6ad623a3 | 315 | if (parse_ifindex(word, &ifi) < 0) |
9b5ed6fe LP |
316 | continue; |
317 | ||
318 | if (!GREEDY_REALLOC(ni, allocated, nr+1)) { | |
319 | free(ni); | |
320 | return log_oom(); | |
321 | } | |
322 | ||
323 | ni[nr++] = ifi; | |
324 | } | |
325 | ||
326 | free(m->netif); | |
327 | m->netif = ni; | |
328 | m->n_netif = nr; | |
329 | } | |
330 | ||
9444b1f2 LP |
331 | return r; |
332 | } | |
333 | ||
c3350683 | 334 | static int machine_start_scope(Machine *m, sd_bus_message *properties, sd_bus_error *error) { |
9444b1f2 | 335 | assert(m); |
fbe55073 | 336 | assert(m->class != MACHINE_HOST); |
9444b1f2 | 337 | |
89f7c846 | 338 | if (!m->unit) { |
354f62cf YW |
339 | _cleanup_free_ char *escaped = NULL, *scope = NULL; |
340 | char *description, *job = NULL; | |
341 | int r; | |
9444b1f2 | 342 | |
fb6becb4 | 343 | escaped = unit_name_escape(m->name); |
9444b1f2 LP |
344 | if (!escaped) |
345 | return log_oom(); | |
346 | ||
605405c6 | 347 | scope = strjoin("machine-", escaped, ".scope"); |
f526ab7e | 348 | if (!scope) |
9444b1f2 | 349 | return log_oom(); |
9444b1f2 | 350 | |
63c372cb | 351 | description = strjoina(m->class == MACHINE_VM ? "Virtual Machine " : "Container ", m->name); |
9444b1f2 | 352 | |
c3350683 | 353 | r = manager_start_scope(m->manager, scope, m->leader, SPECIAL_MACHINE_SLICE, description, properties, error, &job); |
354f62cf YW |
354 | if (r < 0) |
355 | return log_error_errno(r, "Failed to start machine scope: %s", bus_error_message(error, r)); | |
356 | ||
357 | m->unit = TAKE_PTR(scope); | |
358 | free_and_replace(m->scope_job, job); | |
9444b1f2 LP |
359 | } |
360 | ||
89f7c846 LP |
361 | if (m->unit) |
362 | hashmap_put(m->manager->machine_units, m->unit, m); | |
d0af76e6 | 363 | |
354f62cf | 364 | return 0; |
9444b1f2 LP |
365 | } |
366 | ||
c3350683 | 367 | int machine_start(Machine *m, sd_bus_message *properties, sd_bus_error *error) { |
9444b1f2 LP |
368 | int r; |
369 | ||
370 | assert(m); | |
371 | ||
fbe55073 LP |
372 | if (!IN_SET(m->class, MACHINE_CONTAINER, MACHINE_VM)) |
373 | return -EOPNOTSUPP; | |
374 | ||
9444b1f2 LP |
375 | if (m->started) |
376 | return 0; | |
377 | ||
4a0b58c4 | 378 | r = hashmap_put(m->manager->machine_leaders, PID_TO_PTR(m->leader), m); |
d3e84ddb LP |
379 | if (r < 0) |
380 | return r; | |
381 | ||
fb6becb4 | 382 | /* Create cgroup */ |
c3350683 | 383 | r = machine_start_scope(m, properties, error); |
fb6becb4 LP |
384 | if (r < 0) |
385 | return r; | |
386 | ||
9444b1f2 | 387 | log_struct(LOG_INFO, |
2b044526 | 388 | "MESSAGE_ID=" SD_MESSAGE_MACHINE_START_STR, |
9444b1f2 | 389 | "NAME=%s", m->name, |
de0671ee | 390 | "LEADER="PID_FMT, m->leader, |
a1230ff9 | 391 | LOG_MESSAGE("New machine %s.", m->name)); |
9444b1f2 | 392 | |
9444b1f2 LP |
393 | if (!dual_timestamp_is_set(&m->timestamp)) |
394 | dual_timestamp_get(&m->timestamp); | |
395 | ||
396 | m->started = true; | |
397 | ||
398 | /* Save new machine data */ | |
399 | machine_save(m); | |
400 | ||
401 | machine_send_signal(m, true); | |
9fdcbae5 | 402 | (void) manager_enqueue_nscd_cache_flush(m->manager); |
9444b1f2 LP |
403 | |
404 | return 0; | |
405 | } | |
406 | ||
fb6becb4 | 407 | static int machine_stop_scope(Machine *m) { |
4afd3348 | 408 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
39883f62 | 409 | char *job = NULL; |
b92d0b4c | 410 | int r, q; |
9444b1f2 LP |
411 | |
412 | assert(m); | |
fbe55073 | 413 | assert(m->class != MACHINE_HOST); |
9444b1f2 | 414 | |
89f7c846 | 415 | if (!m->unit) |
fb6becb4 | 416 | return 0; |
9444b1f2 | 417 | |
c00a4c8f | 418 | r = manager_stop_unit(m->manager, m->unit, &error, &job); |
b92d0b4c LP |
419 | if (r < 0) { |
420 | log_error_errno(r, "Failed to stop machine scope: %s", bus_error_message(&error, r)); | |
421 | sd_bus_error_free(&error); | |
422 | } else | |
423 | free_and_replace(m->scope_job, job); | |
424 | ||
425 | q = manager_unref_unit(m->manager, m->unit, &error); | |
426 | if (q < 0) | |
427 | log_warning_errno(q, "Failed to drop reference to machine scope, ignoring: %s", bus_error_message(&error, r)); | |
9444b1f2 | 428 | |
b92d0b4c | 429 | return r; |
9444b1f2 LP |
430 | } |
431 | ||
432 | int machine_stop(Machine *m) { | |
49f3fffd LP |
433 | int r; |
434 | assert(m); | |
435 | ||
fbe55073 LP |
436 | if (!IN_SET(m->class, MACHINE_CONTAINER, MACHINE_VM)) |
437 | return -EOPNOTSUPP; | |
438 | ||
49f3fffd LP |
439 | r = machine_stop_scope(m); |
440 | ||
441 | m->stopping = true; | |
442 | ||
443 | machine_save(m); | |
9fdcbae5 | 444 | (void) manager_enqueue_nscd_cache_flush(m->manager); |
49f3fffd LP |
445 | |
446 | return r; | |
447 | } | |
448 | ||
449 | int machine_finalize(Machine *m) { | |
9444b1f2 LP |
450 | assert(m); |
451 | ||
452 | if (m->started) | |
453 | log_struct(LOG_INFO, | |
2b044526 | 454 | "MESSAGE_ID=" SD_MESSAGE_MACHINE_STOP_STR, |
9444b1f2 | 455 | "NAME=%s", m->name, |
de0671ee | 456 | "LEADER="PID_FMT, m->leader, |
a1230ff9 | 457 | LOG_MESSAGE("Machine %s terminated.", m->name)); |
9444b1f2 | 458 | |
89f7c846 | 459 | machine_unlink(m); |
9444b1f2 LP |
460 | machine_add_to_gc_queue(m); |
461 | ||
49f3fffd | 462 | if (m->started) { |
9444b1f2 | 463 | machine_send_signal(m, false); |
49f3fffd LP |
464 | m->started = false; |
465 | } | |
9444b1f2 | 466 | |
49f3fffd | 467 | return 0; |
9444b1f2 LP |
468 | } |
469 | ||
554ce41f | 470 | bool machine_may_gc(Machine *m, bool drop_not_started) { |
9444b1f2 LP |
471 | assert(m); |
472 | ||
fbe55073 | 473 | if (m->class == MACHINE_HOST) |
554ce41f | 474 | return false; |
fbe55073 | 475 | |
9444b1f2 | 476 | if (drop_not_started && !m->started) |
554ce41f | 477 | return true; |
9444b1f2 | 478 | |
c3350683 | 479 | if (m->scope_job && manager_job_is_active(m->manager, m->scope_job)) |
554ce41f | 480 | return false; |
9444b1f2 | 481 | |
89f7c846 | 482 | if (m->unit && manager_unit_is_active(m->manager, m->unit)) |
554ce41f | 483 | return false; |
9444b1f2 | 484 | |
554ce41f | 485 | return true; |
9444b1f2 LP |
486 | } |
487 | ||
488 | void machine_add_to_gc_queue(Machine *m) { | |
489 | assert(m); | |
490 | ||
491 | if (m->in_gc_queue) | |
492 | return; | |
493 | ||
71fda00f | 494 | LIST_PREPEND(gc_queue, m->manager->machine_gc_queue, m); |
9444b1f2 LP |
495 | m->in_gc_queue = true; |
496 | } | |
497 | ||
fb6becb4 LP |
498 | MachineState machine_get_state(Machine *s) { |
499 | assert(s); | |
9444b1f2 | 500 | |
fbe55073 LP |
501 | if (s->class == MACHINE_HOST) |
502 | return MACHINE_RUNNING; | |
503 | ||
49f3fffd LP |
504 | if (s->stopping) |
505 | return MACHINE_CLOSING; | |
506 | ||
fb6becb4 | 507 | if (s->scope_job) |
49f3fffd | 508 | return MACHINE_OPENING; |
9444b1f2 | 509 | |
fb6becb4 LP |
510 | return MACHINE_RUNNING; |
511 | } | |
9444b1f2 | 512 | |
fb6becb4 LP |
513 | int machine_kill(Machine *m, KillWho who, int signo) { |
514 | assert(m); | |
9444b1f2 | 515 | |
fbe55073 LP |
516 | if (!IN_SET(m->class, MACHINE_VM, MACHINE_CONTAINER)) |
517 | return -EOPNOTSUPP; | |
518 | ||
89f7c846 | 519 | if (!m->unit) |
fb6becb4 | 520 | return -ESRCH; |
9444b1f2 | 521 | |
de58a50e LP |
522 | if (who == KILL_LEADER) { |
523 | /* If we shall simply kill the leader, do so directly */ | |
524 | ||
525 | if (kill(m->leader, signo) < 0) | |
526 | return -errno; | |
9d685ca8 ED |
527 | |
528 | return 0; | |
de58a50e LP |
529 | } |
530 | ||
b938cb90 | 531 | /* Otherwise, make PID 1 do it for us, for the entire cgroup */ |
de58a50e | 532 | return manager_kill_unit(m->manager, m->unit, signo, NULL); |
9444b1f2 LP |
533 | } |
534 | ||
ae1d13db | 535 | int machine_openpt(Machine *m, int flags, char **ret_slave) { |
fbe55073 LP |
536 | assert(m); |
537 | ||
538 | switch (m->class) { | |
539 | ||
ae1d13db | 540 | case MACHINE_HOST: |
5f430ff7 | 541 | |
ae1d13db | 542 | return openpt_allocate(flags, ret_slave); |
fbe55073 LP |
543 | |
544 | case MACHINE_CONTAINER: | |
545 | if (m->leader <= 0) | |
546 | return -EINVAL; | |
547 | ||
ae1d13db | 548 | return openpt_allocate_in_namespace(m->leader, flags, ret_slave); |
fbe55073 LP |
549 | |
550 | default: | |
551 | return -EOPNOTSUPP; | |
552 | } | |
553 | } | |
554 | ||
40e1f4ea LP |
555 | int machine_open_terminal(Machine *m, const char *path, int mode) { |
556 | assert(m); | |
557 | ||
558 | switch (m->class) { | |
559 | ||
560 | case MACHINE_HOST: | |
561 | return open_terminal(path, mode); | |
562 | ||
563 | case MACHINE_CONTAINER: | |
564 | if (m->leader <= 0) | |
565 | return -EINVAL; | |
566 | ||
567 | return open_terminal_in_namespace(m->leader, path, mode); | |
568 | ||
569 | default: | |
570 | return -EOPNOTSUPP; | |
571 | } | |
572 | } | |
573 | ||
9b420b3c LP |
574 | void machine_release_unit(Machine *m) { |
575 | assert(m); | |
576 | ||
577 | if (!m->unit) | |
578 | return; | |
579 | ||
580 | (void) hashmap_remove(m->manager->machine_units, m->unit); | |
a1e58e8e | 581 | m->unit = mfree(m->unit); |
9b420b3c LP |
582 | } |
583 | ||
3401419b | 584 | int machine_get_uid_shift(Machine *m, uid_t *ret) { |
fbd0b64f | 585 | char p[STRLEN("/proc//uid_map") + DECIMAL_STR_MAX(pid_t) + 1]; |
3401419b LP |
586 | uid_t uid_base, uid_shift, uid_range; |
587 | gid_t gid_base, gid_shift, gid_range; | |
588 | _cleanup_fclose_ FILE *f = NULL; | |
03a7dbea | 589 | int k, r; |
3401419b LP |
590 | |
591 | assert(m); | |
592 | assert(ret); | |
593 | ||
594 | /* Return the base UID/GID of the specified machine. Note that this only works for containers with simple | |
595 | * mappings. In most cases setups should be simple like this, and administrators should only care about the | |
596 | * basic offset a container has relative to the host. This is what this function exposes. | |
597 | * | |
598 | * If we encounter any more complex mappings we politely refuse this with ENXIO. */ | |
599 | ||
600 | if (m->class == MACHINE_HOST) { | |
601 | *ret = 0; | |
602 | return 0; | |
603 | } | |
604 | ||
605 | if (m->class != MACHINE_CONTAINER) | |
606 | return -EOPNOTSUPP; | |
607 | ||
608 | xsprintf(p, "/proc/" PID_FMT "/uid_map", m->leader); | |
609 | f = fopen(p, "re"); | |
610 | if (!f) { | |
611 | if (errno == ENOENT) { | |
612 | /* If the file doesn't exist, user namespacing is off in the kernel, return a zero mapping hence. */ | |
613 | *ret = 0; | |
614 | return 0; | |
615 | } | |
616 | ||
617 | return -errno; | |
618 | } | |
619 | ||
620 | /* Read the first line. There's at least one. */ | |
621 | errno = 0; | |
622 | k = fscanf(f, UID_FMT " " UID_FMT " " UID_FMT "\n", &uid_base, &uid_shift, &uid_range); | |
623 | if (k != 3) { | |
624 | if (ferror(f)) | |
66855de7 | 625 | return errno_or_else(EIO); |
3401419b LP |
626 | |
627 | return -EBADMSG; | |
628 | } | |
629 | ||
630 | /* Not a mapping starting at 0? Then it's a complex mapping we can't expose here. */ | |
631 | if (uid_base != 0) | |
632 | return -ENXIO; | |
633 | /* Insist that at least the nobody user is mapped, everything else is weird, and hence complex, and we don't support it */ | |
3a664727 | 634 | if (uid_range < UID_NOBODY) |
3401419b LP |
635 | return -ENXIO; |
636 | ||
637 | /* If there's more than one line, then we don't support this mapping. */ | |
03a7dbea LP |
638 | r = safe_fgetc(f, NULL); |
639 | if (r < 0) | |
640 | return r; | |
641 | if (r != 0) /* Insist on EOF */ | |
3401419b LP |
642 | return -ENXIO; |
643 | ||
644 | fclose(f); | |
645 | ||
646 | xsprintf(p, "/proc/" PID_FMT "/gid_map", m->leader); | |
647 | f = fopen(p, "re"); | |
648 | if (!f) | |
649 | return -errno; | |
650 | ||
651 | /* Read the first line. There's at least one. */ | |
652 | errno = 0; | |
653 | k = fscanf(f, GID_FMT " " GID_FMT " " GID_FMT "\n", &gid_base, &gid_shift, &gid_range); | |
654 | if (k != 3) { | |
655 | if (ferror(f)) | |
66855de7 | 656 | return errno_or_else(EIO); |
3401419b LP |
657 | |
658 | return -EBADMSG; | |
659 | } | |
660 | ||
661 | /* If there's more than one line, then we don't support this file. */ | |
03a7dbea LP |
662 | r = safe_fgetc(f, NULL); |
663 | if (r < 0) | |
664 | return r; | |
665 | if (r != 0) /* Insist on EOF */ | |
3401419b LP |
666 | return -ENXIO; |
667 | ||
668 | /* If the UID and GID mapping doesn't match, we don't support this mapping. */ | |
669 | if (uid_base != (uid_t) gid_base) | |
670 | return -ENXIO; | |
671 | if (uid_shift != (uid_t) gid_shift) | |
672 | return -ENXIO; | |
673 | if (uid_range != (uid_t) gid_range) | |
674 | return -ENXIO; | |
675 | ||
676 | *ret = uid_shift; | |
677 | return 0; | |
678 | } | |
679 | ||
9444b1f2 LP |
680 | static const char* const machine_class_table[_MACHINE_CLASS_MAX] = { |
681 | [MACHINE_CONTAINER] = "container", | |
fbe55073 LP |
682 | [MACHINE_VM] = "vm", |
683 | [MACHINE_HOST] = "host", | |
9444b1f2 LP |
684 | }; |
685 | ||
686 | DEFINE_STRING_TABLE_LOOKUP(machine_class, MachineClass); | |
fb6becb4 LP |
687 | |
688 | static const char* const machine_state_table[_MACHINE_STATE_MAX] = { | |
689 | [MACHINE_OPENING] = "opening", | |
690 | [MACHINE_RUNNING] = "running", | |
691 | [MACHINE_CLOSING] = "closing" | |
692 | }; | |
693 | ||
694 | DEFINE_STRING_TABLE_LOOKUP(machine_state, MachineState); | |
1ee306e1 LP |
695 | |
696 | static const char* const kill_who_table[_KILL_WHO_MAX] = { | |
697 | [KILL_LEADER] = "leader", | |
698 | [KILL_ALL] = "all" | |
699 | }; | |
700 | ||
701 | DEFINE_STRING_TABLE_LOOKUP(kill_who, KillWho); |