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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> | |
0d536673 | 6 | #include <stdio_ext.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" |
4f5dd394 | 14 | #include "escape.h" |
cf0fbc49 | 15 | #include "extract-word.h" |
3ffd4af2 | 16 | #include "fd-util.h" |
9444b1f2 | 17 | #include "fileio.h" |
f97b34a6 | 18 | #include "format-util.h" |
66cb2fde | 19 | #include "hashmap.h" |
4f5dd394 | 20 | #include "machine-dbus.h" |
3ffd4af2 | 21 | #include "machine.h" |
66cb2fde | 22 | #include "mkdir.h" |
6bedfcbb | 23 | #include "parse-util.h" |
4a0b58c4 | 24 | #include "process-util.h" |
d68c645b | 25 | #include "serialize.h" |
9444b1f2 | 26 | #include "special.h" |
3401419b | 27 | #include "stdio-util.h" |
8b43440b | 28 | #include "string-table.h" |
66cb2fde | 29 | #include "terminal-util.h" |
e4de7287 | 30 | #include "tmpfile-util.h" |
fb6becb4 | 31 | #include "unit-name.h" |
3a664727 | 32 | #include "user-util.h" |
66cb2fde | 33 | #include "util.h" |
9444b1f2 | 34 | |
fbe55073 | 35 | Machine* machine_new(Manager *manager, MachineClass class, const char *name) { |
9444b1f2 LP |
36 | Machine *m; |
37 | ||
38 | assert(manager); | |
fbe55073 | 39 | assert(class < _MACHINE_CLASS_MAX); |
9444b1f2 LP |
40 | assert(name); |
41 | ||
fbe55073 LP |
42 | /* Passing class == _MACHINE_CLASS_INVALID here is fine. It |
43 | * means as much as "we don't know yet", and that we'll figure | |
44 | * it out later when loading the state file. */ | |
45 | ||
9444b1f2 LP |
46 | m = new0(Machine, 1); |
47 | if (!m) | |
48 | return NULL; | |
49 | ||
50 | m->name = strdup(name); | |
51 | if (!m->name) | |
52 | goto fail; | |
53 | ||
fbe55073 LP |
54 | if (class != MACHINE_HOST) { |
55 | m->state_file = strappend("/run/systemd/machines/", m->name); | |
56 | if (!m->state_file) | |
57 | goto fail; | |
58 | } | |
59 | ||
60 | m->class = class; | |
9444b1f2 LP |
61 | |
62 | if (hashmap_put(manager->machines, m->name, m) < 0) | |
63 | goto fail; | |
64 | ||
9444b1f2 LP |
65 | m->manager = manager; |
66 | ||
67 | return m; | |
68 | ||
69 | fail: | |
70 | free(m->state_file); | |
71 | free(m->name); | |
6b430fdb | 72 | return mfree(m); |
9444b1f2 LP |
73 | } |
74 | ||
bb1a05d6 YW |
75 | Machine* machine_free(Machine *m) { |
76 | if (!m) | |
77 | return NULL; | |
9444b1f2 | 78 | |
0370612e | 79 | while (m->operations) |
795c5d31 | 80 | operation_free(m->operations); |
0370612e | 81 | |
9444b1f2 | 82 | if (m->in_gc_queue) |
71fda00f | 83 | LIST_REMOVE(gc_queue, m->manager->machine_gc_queue, m); |
9444b1f2 | 84 | |
9b420b3c | 85 | machine_release_unit(m); |
9444b1f2 | 86 | |
fb6becb4 LP |
87 | free(m->scope_job); |
88 | ||
9b420b3c | 89 | (void) hashmap_remove(m->manager->machines, m->name); |
9444b1f2 | 90 | |
fbe55073 LP |
91 | if (m->manager->host_machine == m) |
92 | m->manager->host_machine = NULL; | |
93 | ||
d3e84ddb | 94 | if (m->leader > 0) |
4a0b58c4 | 95 | (void) hashmap_remove_value(m->manager->machine_leaders, PID_TO_PTR(m->leader), m); |
d3e84ddb | 96 | |
c3350683 | 97 | sd_bus_message_unref(m->create_message); |
fb6becb4 | 98 | |
9444b1f2 LP |
99 | free(m->name); |
100 | free(m->state_file); | |
101 | free(m->service); | |
9444b1f2 | 102 | free(m->root_directory); |
9b5ed6fe | 103 | free(m->netif); |
bb1a05d6 | 104 | return mfree(m); |
9444b1f2 LP |
105 | } |
106 | ||
107 | int machine_save(Machine *m) { | |
108 | _cleanup_free_ char *temp_path = NULL; | |
109 | _cleanup_fclose_ FILE *f = NULL; | |
110 | int r; | |
111 | ||
112 | assert(m); | |
fbe55073 LP |
113 | |
114 | if (!m->state_file) | |
115 | return 0; | |
9444b1f2 LP |
116 | |
117 | if (!m->started) | |
118 | return 0; | |
119 | ||
37c1d5e9 | 120 | r = mkdir_safe_label("/run/systemd/machines", 0755, 0, 0, MKDIR_WARN_MODE); |
9444b1f2 | 121 | if (r < 0) |
dacd6cee | 122 | goto fail; |
9444b1f2 LP |
123 | |
124 | r = fopen_temporary(m->state_file, &f, &temp_path); | |
125 | if (r < 0) | |
dacd6cee | 126 | goto fail; |
9444b1f2 | 127 | |
0d536673 | 128 | (void) __fsetlocking(f, FSETLOCKING_BYCALLER); |
dacd6cee | 129 | (void) fchmod(fileno(f), 0644); |
9444b1f2 LP |
130 | |
131 | fprintf(f, | |
132 | "# This is private data. Do not parse.\n" | |
133 | "NAME=%s\n", | |
134 | m->name); | |
135 | ||
ca5405bb LP |
136 | if (m->unit) { |
137 | _cleanup_free_ char *escaped; | |
138 | ||
139 | escaped = cescape(m->unit); | |
140 | if (!escaped) { | |
141 | r = -ENOMEM; | |
dacd6cee | 142 | goto fail; |
ca5405bb LP |
143 | } |
144 | ||
145 | 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 */ | |
146 | } | |
fb6becb4 LP |
147 | |
148 | if (m->scope_job) | |
149 | fprintf(f, "SCOPE_JOB=%s\n", m->scope_job); | |
9444b1f2 | 150 | |
ca5405bb LP |
151 | if (m->service) { |
152 | _cleanup_free_ char *escaped; | |
9444b1f2 | 153 | |
ca5405bb LP |
154 | escaped = cescape(m->service); |
155 | if (!escaped) { | |
156 | r = -ENOMEM; | |
dacd6cee | 157 | goto fail; |
ca5405bb LP |
158 | } |
159 | fprintf(f, "SERVICE=%s\n", escaped); | |
160 | } | |
161 | ||
162 | if (m->root_directory) { | |
163 | _cleanup_free_ char *escaped; | |
164 | ||
165 | escaped = cescape(m->root_directory); | |
166 | if (!escaped) { | |
167 | r = -ENOMEM; | |
dacd6cee | 168 | goto fail; |
ca5405bb LP |
169 | } |
170 | fprintf(f, "ROOT=%s\n", escaped); | |
171 | } | |
9444b1f2 | 172 | |
3bbaff3e | 173 | if (!sd_id128_is_null(m->id)) |
9444b1f2 LP |
174 | fprintf(f, "ID=" SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(m->id)); |
175 | ||
176 | if (m->leader != 0) | |
90b2de37 | 177 | fprintf(f, "LEADER="PID_FMT"\n", m->leader); |
9444b1f2 LP |
178 | |
179 | if (m->class != _MACHINE_CLASS_INVALID) | |
180 | fprintf(f, "CLASS=%s\n", machine_class_to_string(m->class)); | |
181 | ||
182 | if (dual_timestamp_is_set(&m->timestamp)) | |
183 | fprintf(f, | |
90b2de37 ZJS |
184 | "REALTIME="USEC_FMT"\n" |
185 | "MONOTONIC="USEC_FMT"\n", | |
186 | m->timestamp.realtime, | |
187 | m->timestamp.monotonic); | |
9444b1f2 | 188 | |
9b5ed6fe | 189 | if (m->n_netif > 0) { |
68e16e9c | 190 | size_t i; |
9b5ed6fe | 191 | |
0d536673 | 192 | fputs("NETIF=", f); |
9b5ed6fe LP |
193 | |
194 | for (i = 0; i < m->n_netif; i++) { | |
195 | if (i != 0) | |
0d536673 | 196 | fputc(' ', f); |
9b5ed6fe LP |
197 | |
198 | fprintf(f, "%i", m->netif[i]); | |
199 | } | |
200 | ||
0d536673 | 201 | fputc('\n', f); |
9b5ed6fe LP |
202 | } |
203 | ||
034753ac LP |
204 | r = fflush_and_check(f); |
205 | if (r < 0) | |
dacd6cee | 206 | goto fail; |
9444b1f2 | 207 | |
034753ac | 208 | if (rename(temp_path, m->state_file) < 0) { |
9444b1f2 | 209 | r = -errno; |
dacd6cee | 210 | goto fail; |
9444b1f2 LP |
211 | } |
212 | ||
89f7c846 LP |
213 | if (m->unit) { |
214 | char *sl; | |
215 | ||
216 | /* Create a symlink from the unit name to the machine | |
217 | * name, so that we can quickly find the machine for | |
e62d9b81 | 218 | * each given unit. Ignore error. */ |
63c372cb | 219 | sl = strjoina("/run/systemd/machines/unit:", m->unit); |
e62d9b81 | 220 | (void) symlink(m->name, sl); |
89f7c846 LP |
221 | } |
222 | ||
dacd6cee | 223 | return 0; |
034753ac | 224 | |
dacd6cee LP |
225 | fail: |
226 | (void) unlink(m->state_file); | |
227 | ||
228 | if (temp_path) | |
229 | (void) unlink(temp_path); | |
9444b1f2 | 230 | |
dacd6cee | 231 | return log_error_errno(r, "Failed to save machine data %s: %m", m->state_file); |
9444b1f2 LP |
232 | } |
233 | ||
89f7c846 LP |
234 | static void machine_unlink(Machine *m) { |
235 | assert(m); | |
236 | ||
237 | if (m->unit) { | |
89f7c846 LP |
238 | char *sl; |
239 | ||
63c372cb | 240 | sl = strjoina("/run/systemd/machines/unit:", m->unit); |
491ac9f2 | 241 | (void) unlink(sl); |
89f7c846 LP |
242 | } |
243 | ||
244 | if (m->state_file) | |
491ac9f2 | 245 | (void) unlink(m->state_file); |
89f7c846 LP |
246 | } |
247 | ||
9444b1f2 | 248 | int machine_load(Machine *m) { |
9b5ed6fe | 249 | _cleanup_free_ char *realtime = NULL, *monotonic = NULL, *id = NULL, *leader = NULL, *class = NULL, *netif = NULL; |
9444b1f2 LP |
250 | int r; |
251 | ||
252 | assert(m); | |
253 | ||
fbe55073 LP |
254 | if (!m->state_file) |
255 | return 0; | |
256 | ||
aa8fbc74 | 257 | r = parse_env_file(NULL, m->state_file, |
89f7c846 | 258 | "SCOPE", &m->unit, |
fb6becb4 | 259 | "SCOPE_JOB", &m->scope_job, |
9444b1f2 | 260 | "SERVICE", &m->service, |
9444b1f2 LP |
261 | "ROOT", &m->root_directory, |
262 | "ID", &id, | |
263 | "LEADER", &leader, | |
264 | "CLASS", &class, | |
265 | "REALTIME", &realtime, | |
266 | "MONOTONIC", &monotonic, | |
13df9c39 | 267 | "NETIF", &netif); |
9444b1f2 LP |
268 | if (r < 0) { |
269 | if (r == -ENOENT) | |
270 | return 0; | |
271 | ||
8d3d7072 | 272 | return log_error_errno(r, "Failed to read %s: %m", m->state_file); |
9444b1f2 LP |
273 | } |
274 | ||
275 | if (id) | |
276 | sd_id128_from_string(id, &m->id); | |
277 | ||
278 | if (leader) | |
279 | parse_pid(leader, &m->leader); | |
280 | ||
281 | if (class) { | |
282 | MachineClass c; | |
283 | ||
284 | c = machine_class_from_string(class); | |
285 | if (c >= 0) | |
286 | m->class = c; | |
287 | } | |
288 | ||
b895a735 | 289 | if (realtime) |
d68c645b | 290 | (void) deserialize_usec(realtime, &m->timestamp.realtime); |
b895a735 | 291 | if (monotonic) |
d68c645b | 292 | (void) deserialize_usec(monotonic, &m->timestamp.monotonic); |
9444b1f2 | 293 | |
9b5ed6fe | 294 | if (netif) { |
75a8fd6a SS |
295 | size_t allocated = 0, nr = 0; |
296 | const char *p; | |
9b5ed6fe LP |
297 | int *ni = NULL; |
298 | ||
75a8fd6a | 299 | p = netif; |
9ed794a3 | 300 | for (;;) { |
75a8fd6a | 301 | _cleanup_free_ char *word = NULL; |
9b5ed6fe LP |
302 | int ifi; |
303 | ||
75a8fd6a | 304 | r = extract_first_word(&p, &word, NULL, 0); |
75a8fd6a SS |
305 | if (r == 0) |
306 | break; | |
6a37c684 | 307 | if (r == -ENOMEM) |
52278ad3 | 308 | return log_oom(); |
6a37c684 | 309 | if (r < 0) { |
52278ad3 | 310 | log_warning_errno(r, "Failed to parse NETIF: %s", netif); |
6a37c684 | 311 | break; |
52278ad3 | 312 | } |
75a8fd6a | 313 | |
6ad623a3 | 314 | if (parse_ifindex(word, &ifi) < 0) |
9b5ed6fe LP |
315 | continue; |
316 | ||
317 | if (!GREEDY_REALLOC(ni, allocated, nr+1)) { | |
318 | free(ni); | |
319 | return log_oom(); | |
320 | } | |
321 | ||
322 | ni[nr++] = ifi; | |
323 | } | |
324 | ||
325 | free(m->netif); | |
326 | m->netif = ni; | |
327 | m->n_netif = nr; | |
328 | } | |
329 | ||
9444b1f2 LP |
330 | return r; |
331 | } | |
332 | ||
c3350683 | 333 | static int machine_start_scope(Machine *m, sd_bus_message *properties, sd_bus_error *error) { |
9444b1f2 | 334 | assert(m); |
fbe55073 | 335 | assert(m->class != MACHINE_HOST); |
9444b1f2 | 336 | |
89f7c846 | 337 | if (!m->unit) { |
354f62cf YW |
338 | _cleanup_free_ char *escaped = NULL, *scope = NULL; |
339 | char *description, *job = NULL; | |
340 | int r; | |
9444b1f2 | 341 | |
fb6becb4 | 342 | escaped = unit_name_escape(m->name); |
9444b1f2 LP |
343 | if (!escaped) |
344 | return log_oom(); | |
345 | ||
605405c6 | 346 | scope = strjoin("machine-", escaped, ".scope"); |
f526ab7e | 347 | if (!scope) |
9444b1f2 | 348 | return log_oom(); |
9444b1f2 | 349 | |
63c372cb | 350 | description = strjoina(m->class == MACHINE_VM ? "Virtual Machine " : "Container ", m->name); |
9444b1f2 | 351 | |
c3350683 | 352 | r = manager_start_scope(m->manager, scope, m->leader, SPECIAL_MACHINE_SLICE, description, properties, error, &job); |
354f62cf YW |
353 | if (r < 0) |
354 | return log_error_errno(r, "Failed to start machine scope: %s", bus_error_message(error, r)); | |
355 | ||
356 | m->unit = TAKE_PTR(scope); | |
357 | free_and_replace(m->scope_job, job); | |
9444b1f2 LP |
358 | } |
359 | ||
89f7c846 LP |
360 | if (m->unit) |
361 | hashmap_put(m->manager->machine_units, m->unit, m); | |
d0af76e6 | 362 | |
354f62cf | 363 | return 0; |
9444b1f2 LP |
364 | } |
365 | ||
c3350683 | 366 | int machine_start(Machine *m, sd_bus_message *properties, sd_bus_error *error) { |
9444b1f2 LP |
367 | int r; |
368 | ||
369 | assert(m); | |
370 | ||
fbe55073 LP |
371 | if (!IN_SET(m->class, MACHINE_CONTAINER, MACHINE_VM)) |
372 | return -EOPNOTSUPP; | |
373 | ||
9444b1f2 LP |
374 | if (m->started) |
375 | return 0; | |
376 | ||
4a0b58c4 | 377 | r = hashmap_put(m->manager->machine_leaders, PID_TO_PTR(m->leader), m); |
d3e84ddb LP |
378 | if (r < 0) |
379 | return r; | |
380 | ||
fb6becb4 | 381 | /* Create cgroup */ |
c3350683 | 382 | r = machine_start_scope(m, properties, error); |
fb6becb4 LP |
383 | if (r < 0) |
384 | return r; | |
385 | ||
9444b1f2 | 386 | log_struct(LOG_INFO, |
2b044526 | 387 | "MESSAGE_ID=" SD_MESSAGE_MACHINE_START_STR, |
9444b1f2 | 388 | "NAME=%s", m->name, |
de0671ee | 389 | "LEADER="PID_FMT, m->leader, |
a1230ff9 | 390 | LOG_MESSAGE("New machine %s.", m->name)); |
9444b1f2 | 391 | |
9444b1f2 LP |
392 | if (!dual_timestamp_is_set(&m->timestamp)) |
393 | dual_timestamp_get(&m->timestamp); | |
394 | ||
395 | m->started = true; | |
396 | ||
397 | /* Save new machine data */ | |
398 | machine_save(m); | |
399 | ||
400 | machine_send_signal(m, true); | |
9fdcbae5 | 401 | (void) manager_enqueue_nscd_cache_flush(m->manager); |
9444b1f2 LP |
402 | |
403 | return 0; | |
404 | } | |
405 | ||
fb6becb4 | 406 | static int machine_stop_scope(Machine *m) { |
4afd3348 | 407 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
39883f62 | 408 | char *job = NULL; |
b92d0b4c | 409 | int r, q; |
9444b1f2 LP |
410 | |
411 | assert(m); | |
fbe55073 | 412 | assert(m->class != MACHINE_HOST); |
9444b1f2 | 413 | |
89f7c846 | 414 | if (!m->unit) |
fb6becb4 | 415 | return 0; |
9444b1f2 | 416 | |
c00a4c8f | 417 | r = manager_stop_unit(m->manager, m->unit, &error, &job); |
b92d0b4c LP |
418 | if (r < 0) { |
419 | log_error_errno(r, "Failed to stop machine scope: %s", bus_error_message(&error, r)); | |
420 | sd_bus_error_free(&error); | |
421 | } else | |
422 | free_and_replace(m->scope_job, job); | |
423 | ||
424 | q = manager_unref_unit(m->manager, m->unit, &error); | |
425 | if (q < 0) | |
426 | log_warning_errno(q, "Failed to drop reference to machine scope, ignoring: %s", bus_error_message(&error, r)); | |
9444b1f2 | 427 | |
b92d0b4c | 428 | return r; |
9444b1f2 LP |
429 | } |
430 | ||
431 | int machine_stop(Machine *m) { | |
49f3fffd LP |
432 | int r; |
433 | assert(m); | |
434 | ||
fbe55073 LP |
435 | if (!IN_SET(m->class, MACHINE_CONTAINER, MACHINE_VM)) |
436 | return -EOPNOTSUPP; | |
437 | ||
49f3fffd LP |
438 | r = machine_stop_scope(m); |
439 | ||
440 | m->stopping = true; | |
441 | ||
442 | machine_save(m); | |
9fdcbae5 | 443 | (void) manager_enqueue_nscd_cache_flush(m->manager); |
49f3fffd LP |
444 | |
445 | return r; | |
446 | } | |
447 | ||
448 | int machine_finalize(Machine *m) { | |
9444b1f2 LP |
449 | assert(m); |
450 | ||
451 | if (m->started) | |
452 | log_struct(LOG_INFO, | |
2b044526 | 453 | "MESSAGE_ID=" SD_MESSAGE_MACHINE_STOP_STR, |
9444b1f2 | 454 | "NAME=%s", m->name, |
de0671ee | 455 | "LEADER="PID_FMT, m->leader, |
a1230ff9 | 456 | LOG_MESSAGE("Machine %s terminated.", m->name)); |
9444b1f2 | 457 | |
89f7c846 | 458 | machine_unlink(m); |
9444b1f2 LP |
459 | machine_add_to_gc_queue(m); |
460 | ||
49f3fffd | 461 | if (m->started) { |
9444b1f2 | 462 | machine_send_signal(m, false); |
49f3fffd LP |
463 | m->started = false; |
464 | } | |
9444b1f2 | 465 | |
49f3fffd | 466 | return 0; |
9444b1f2 LP |
467 | } |
468 | ||
554ce41f | 469 | bool machine_may_gc(Machine *m, bool drop_not_started) { |
9444b1f2 LP |
470 | assert(m); |
471 | ||
fbe55073 | 472 | if (m->class == MACHINE_HOST) |
554ce41f | 473 | return false; |
fbe55073 | 474 | |
9444b1f2 | 475 | if (drop_not_started && !m->started) |
554ce41f | 476 | return true; |
9444b1f2 | 477 | |
c3350683 | 478 | if (m->scope_job && manager_job_is_active(m->manager, m->scope_job)) |
554ce41f | 479 | return false; |
9444b1f2 | 480 | |
89f7c846 | 481 | if (m->unit && manager_unit_is_active(m->manager, m->unit)) |
554ce41f | 482 | return false; |
9444b1f2 | 483 | |
554ce41f | 484 | return true; |
9444b1f2 LP |
485 | } |
486 | ||
487 | void machine_add_to_gc_queue(Machine *m) { | |
488 | assert(m); | |
489 | ||
490 | if (m->in_gc_queue) | |
491 | return; | |
492 | ||
71fda00f | 493 | LIST_PREPEND(gc_queue, m->manager->machine_gc_queue, m); |
9444b1f2 LP |
494 | m->in_gc_queue = true; |
495 | } | |
496 | ||
fb6becb4 LP |
497 | MachineState machine_get_state(Machine *s) { |
498 | assert(s); | |
9444b1f2 | 499 | |
fbe55073 LP |
500 | if (s->class == MACHINE_HOST) |
501 | return MACHINE_RUNNING; | |
502 | ||
49f3fffd LP |
503 | if (s->stopping) |
504 | return MACHINE_CLOSING; | |
505 | ||
fb6becb4 | 506 | if (s->scope_job) |
49f3fffd | 507 | return MACHINE_OPENING; |
9444b1f2 | 508 | |
fb6becb4 LP |
509 | return MACHINE_RUNNING; |
510 | } | |
9444b1f2 | 511 | |
fb6becb4 LP |
512 | int machine_kill(Machine *m, KillWho who, int signo) { |
513 | assert(m); | |
9444b1f2 | 514 | |
fbe55073 LP |
515 | if (!IN_SET(m->class, MACHINE_VM, MACHINE_CONTAINER)) |
516 | return -EOPNOTSUPP; | |
517 | ||
89f7c846 | 518 | if (!m->unit) |
fb6becb4 | 519 | return -ESRCH; |
9444b1f2 | 520 | |
de58a50e LP |
521 | if (who == KILL_LEADER) { |
522 | /* If we shall simply kill the leader, do so directly */ | |
523 | ||
524 | if (kill(m->leader, signo) < 0) | |
525 | return -errno; | |
9d685ca8 ED |
526 | |
527 | return 0; | |
de58a50e LP |
528 | } |
529 | ||
b938cb90 | 530 | /* Otherwise, make PID 1 do it for us, for the entire cgroup */ |
de58a50e | 531 | return manager_kill_unit(m->manager, m->unit, signo, NULL); |
9444b1f2 LP |
532 | } |
533 | ||
fbe55073 LP |
534 | int machine_openpt(Machine *m, int flags) { |
535 | assert(m); | |
536 | ||
537 | switch (m->class) { | |
538 | ||
5f430ff7 LP |
539 | case MACHINE_HOST: { |
540 | int fd; | |
541 | ||
542 | fd = posix_openpt(flags); | |
543 | if (fd < 0) | |
544 | return -errno; | |
545 | ||
546 | if (unlockpt(fd) < 0) | |
547 | return -errno; | |
548 | ||
549 | return fd; | |
550 | } | |
fbe55073 LP |
551 | |
552 | case MACHINE_CONTAINER: | |
553 | if (m->leader <= 0) | |
554 | return -EINVAL; | |
555 | ||
556 | return openpt_in_namespace(m->leader, flags); | |
557 | ||
558 | default: | |
559 | return -EOPNOTSUPP; | |
560 | } | |
561 | } | |
562 | ||
40e1f4ea LP |
563 | int machine_open_terminal(Machine *m, const char *path, int mode) { |
564 | assert(m); | |
565 | ||
566 | switch (m->class) { | |
567 | ||
568 | case MACHINE_HOST: | |
569 | return open_terminal(path, mode); | |
570 | ||
571 | case MACHINE_CONTAINER: | |
572 | if (m->leader <= 0) | |
573 | return -EINVAL; | |
574 | ||
575 | return open_terminal_in_namespace(m->leader, path, mode); | |
576 | ||
577 | default: | |
578 | return -EOPNOTSUPP; | |
579 | } | |
580 | } | |
581 | ||
9b420b3c LP |
582 | void machine_release_unit(Machine *m) { |
583 | assert(m); | |
584 | ||
585 | if (!m->unit) | |
586 | return; | |
587 | ||
588 | (void) hashmap_remove(m->manager->machine_units, m->unit); | |
a1e58e8e | 589 | m->unit = mfree(m->unit); |
9b420b3c LP |
590 | } |
591 | ||
3401419b | 592 | int machine_get_uid_shift(Machine *m, uid_t *ret) { |
fbd0b64f | 593 | char p[STRLEN("/proc//uid_map") + DECIMAL_STR_MAX(pid_t) + 1]; |
3401419b LP |
594 | uid_t uid_base, uid_shift, uid_range; |
595 | gid_t gid_base, gid_shift, gid_range; | |
596 | _cleanup_fclose_ FILE *f = NULL; | |
03a7dbea | 597 | int k, r; |
3401419b LP |
598 | |
599 | assert(m); | |
600 | assert(ret); | |
601 | ||
602 | /* Return the base UID/GID of the specified machine. Note that this only works for containers with simple | |
603 | * mappings. In most cases setups should be simple like this, and administrators should only care about the | |
604 | * basic offset a container has relative to the host. This is what this function exposes. | |
605 | * | |
606 | * If we encounter any more complex mappings we politely refuse this with ENXIO. */ | |
607 | ||
608 | if (m->class == MACHINE_HOST) { | |
609 | *ret = 0; | |
610 | return 0; | |
611 | } | |
612 | ||
613 | if (m->class != MACHINE_CONTAINER) | |
614 | return -EOPNOTSUPP; | |
615 | ||
616 | xsprintf(p, "/proc/" PID_FMT "/uid_map", m->leader); | |
617 | f = fopen(p, "re"); | |
618 | if (!f) { | |
619 | if (errno == ENOENT) { | |
620 | /* If the file doesn't exist, user namespacing is off in the kernel, return a zero mapping hence. */ | |
621 | *ret = 0; | |
622 | return 0; | |
623 | } | |
624 | ||
625 | return -errno; | |
626 | } | |
627 | ||
628 | /* Read the first line. There's at least one. */ | |
629 | errno = 0; | |
630 | k = fscanf(f, UID_FMT " " UID_FMT " " UID_FMT "\n", &uid_base, &uid_shift, &uid_range); | |
631 | if (k != 3) { | |
632 | if (ferror(f)) | |
633 | return -errno; | |
634 | ||
635 | return -EBADMSG; | |
636 | } | |
637 | ||
638 | /* Not a mapping starting at 0? Then it's a complex mapping we can't expose here. */ | |
639 | if (uid_base != 0) | |
640 | return -ENXIO; | |
641 | /* Insist that at least the nobody user is mapped, everything else is weird, and hence complex, and we don't support it */ | |
3a664727 | 642 | if (uid_range < UID_NOBODY) |
3401419b LP |
643 | return -ENXIO; |
644 | ||
645 | /* If there's more than one line, then we don't support this mapping. */ | |
03a7dbea LP |
646 | r = safe_fgetc(f, NULL); |
647 | if (r < 0) | |
648 | return r; | |
649 | if (r != 0) /* Insist on EOF */ | |
3401419b LP |
650 | return -ENXIO; |
651 | ||
652 | fclose(f); | |
653 | ||
654 | xsprintf(p, "/proc/" PID_FMT "/gid_map", m->leader); | |
655 | f = fopen(p, "re"); | |
656 | if (!f) | |
657 | return -errno; | |
658 | ||
659 | /* Read the first line. There's at least one. */ | |
660 | errno = 0; | |
661 | k = fscanf(f, GID_FMT " " GID_FMT " " GID_FMT "\n", &gid_base, &gid_shift, &gid_range); | |
662 | if (k != 3) { | |
663 | if (ferror(f)) | |
664 | return -errno; | |
665 | ||
666 | return -EBADMSG; | |
667 | } | |
668 | ||
669 | /* If there's more than one line, then we don't support this file. */ | |
03a7dbea LP |
670 | r = safe_fgetc(f, NULL); |
671 | if (r < 0) | |
672 | return r; | |
673 | if (r != 0) /* Insist on EOF */ | |
3401419b LP |
674 | return -ENXIO; |
675 | ||
676 | /* If the UID and GID mapping doesn't match, we don't support this mapping. */ | |
677 | if (uid_base != (uid_t) gid_base) | |
678 | return -ENXIO; | |
679 | if (uid_shift != (uid_t) gid_shift) | |
680 | return -ENXIO; | |
681 | if (uid_range != (uid_t) gid_range) | |
682 | return -ENXIO; | |
683 | ||
684 | *ret = uid_shift; | |
685 | return 0; | |
686 | } | |
687 | ||
9444b1f2 LP |
688 | static const char* const machine_class_table[_MACHINE_CLASS_MAX] = { |
689 | [MACHINE_CONTAINER] = "container", | |
fbe55073 LP |
690 | [MACHINE_VM] = "vm", |
691 | [MACHINE_HOST] = "host", | |
9444b1f2 LP |
692 | }; |
693 | ||
694 | DEFINE_STRING_TABLE_LOOKUP(machine_class, MachineClass); | |
fb6becb4 LP |
695 | |
696 | static const char* const machine_state_table[_MACHINE_STATE_MAX] = { | |
697 | [MACHINE_OPENING] = "opening", | |
698 | [MACHINE_RUNNING] = "running", | |
699 | [MACHINE_CLOSING] = "closing" | |
700 | }; | |
701 | ||
702 | DEFINE_STRING_TABLE_LOOKUP(machine_state, MachineState); | |
1ee306e1 LP |
703 | |
704 | static const char* const kill_who_table[_KILL_WHO_MAX] = { | |
705 | [KILL_LEADER] = "leader", | |
706 | [KILL_ALL] = "all" | |
707 | }; | |
708 | ||
709 | DEFINE_STRING_TABLE_LOOKUP(kill_who, KillWho); |