| 1 | #include <sys/types.h> |
| 2 | #include <sys/device.h> |
| 3 | #include <sys/wait.h> |
| 4 | #include <sys/socket.h> |
| 5 | #include <sys/poll.h> |
| 6 | #include <sys/queue.h> |
| 7 | #include <sys/un.h> |
| 8 | |
| 9 | #include <err.h> |
| 10 | #include <errno.h> |
| 11 | #include <fcntl.h> |
| 12 | #include <libgen.h> |
| 13 | #include <signal.h> |
| 14 | #include <stdarg.h> |
| 15 | #include <stdio.h> |
| 16 | #include <stdlib.h> |
| 17 | #include <string.h> |
| 18 | #include <syslog.h> |
| 19 | #include <unistd.h> |
| 20 | |
| 21 | #include <libprop/proplib.h> |
| 22 | #include <sys/udev.h> |
| 23 | |
| 24 | #define LISTEN_SOCKET_FILE "/tmp/udevd.socket" |
| 25 | #define SOCKFILE_NAMELEN strlen(LISTEN_SOCKET_FILE)+1 |
| 26 | |
| 27 | int conn_local_server(const char *sockfile, int socktype, int nonblock, |
| 28 | int *retsock); |
| 29 | prop_dictionary_t udevd_get_command_dict(char *command); |
| 30 | void udevd_request_devs(int s); |
| 31 | |
| 32 | struct udev { |
| 33 | int gp_fd; |
| 34 | int monitor_fd; |
| 35 | int refs; |
| 36 | |
| 37 | void *userdata; |
| 38 | }; |
| 39 | |
| 40 | struct udev_enumerate { |
| 41 | struct udev *udev_ctx; |
| 42 | prop_array_t pa; |
| 43 | int refs; |
| 44 | TAILQ_HEAD(, udev_list_entry) list_entries; |
| 45 | }; |
| 46 | |
| 47 | struct udev_list_entry { |
| 48 | prop_dictionary_t dict; |
| 49 | TAILQ_ENTRY(udev_list_entry) link; |
| 50 | }; |
| 51 | |
| 52 | struct udev_monitor { |
| 53 | struct udev *udev_ctx; |
| 54 | prop_array_t ev_filt; |
| 55 | int socket; |
| 56 | int user_socket; /* maybe... one day... */ |
| 57 | int refs; |
| 58 | }; |
| 59 | |
| 60 | struct udev_device { |
| 61 | struct udev *udev_ctx; |
| 62 | prop_dictionary_t dict; |
| 63 | int ev_type; |
| 64 | int refs; |
| 65 | }; |
| 66 | |
| 67 | struct udev * |
| 68 | udev_ref(struct udev *udev_ctx) |
| 69 | { |
| 70 | atomic_add_int(&udev_ctx->refs, 1); |
| 71 | |
| 72 | return udev_ctx; |
| 73 | } |
| 74 | |
| 75 | void |
| 76 | udev_unref(struct udev *udev_ctx) |
| 77 | { |
| 78 | int refcount; |
| 79 | |
| 80 | refcount = atomic_fetchadd_int(&udev_ctx->refs, -1); |
| 81 | |
| 82 | if (refcount == 1) { |
| 83 | atomic_subtract_int(&udev_ctx->refs, 0x400); /* in destruction */ |
| 84 | if (udev_ctx->gp_fd != -1) |
| 85 | close (udev_ctx->gp_fd); |
| 86 | if (udev_ctx->monitor_fd != -1) |
| 87 | close (udev_ctx->monitor_fd); |
| 88 | |
| 89 | free(udev_ctx); |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | struct udev * |
| 94 | udev_new() |
| 95 | { |
| 96 | struct udev *udev_ctx; |
| 97 | |
| 98 | udev_ctx = malloc(sizeof(struct udev)); |
| 99 | |
| 100 | udev_ctx->refs = 1; |
| 101 | udev_ctx->gp_fd = -1; |
| 102 | udev_ctx->monitor_fd = -1; |
| 103 | udev_ctx->userdata = NULL; |
| 104 | |
| 105 | return udev_ctx; |
| 106 | } |
| 107 | |
| 108 | const char *udev_get_dev_path(struct udev *udev_ctx __unused) |
| 109 | { |
| 110 | return "/dev"; |
| 111 | } |
| 112 | |
| 113 | void * |
| 114 | udev_get_userdata(struct udev *udev_ctx) |
| 115 | { |
| 116 | return udev_ctx->userdata; |
| 117 | } |
| 118 | |
| 119 | void |
| 120 | udev_set_userdata(struct udev *udev_ctx, void *userdata) |
| 121 | { |
| 122 | udev_ctx->userdata = userdata; |
| 123 | } |
| 124 | |
| 125 | struct udev_enumerate * |
| 126 | udev_enumerate_new(struct udev *udev_ctx) |
| 127 | { |
| 128 | struct udev_enumerate *udev_enum; |
| 129 | |
| 130 | udev_enum = malloc(sizeof(struct udev_enumerate)); |
| 131 | |
| 132 | udev_enum->refs = 1; |
| 133 | udev_enum->pa = NULL; |
| 134 | TAILQ_INIT(&udev_enum->list_entries); |
| 135 | udev_enum->udev_ctx = udev_ref(udev_ctx); |
| 136 | } |
| 137 | |
| 138 | struct udev_enumerate * |
| 139 | udev_enumerate_ref(struct udev_enumerate *udev_enum) |
| 140 | { |
| 141 | atomic_add_int(&udev_enum->refs, 1); |
| 142 | |
| 143 | return udev_enum; |
| 144 | } |
| 145 | |
| 146 | void |
| 147 | udev_enumerate_unref(struct udev_enumerate *udev_enum) |
| 148 | { |
| 149 | struct udev_list_entry *le; |
| 150 | int refcount; |
| 151 | |
| 152 | refcount = atomic_fetchadd_int(&udev_enum->refs, -1); |
| 153 | |
| 154 | if (refcount == 1) { |
| 155 | atomic_subtract_int(&udev_enum->refs, 0x400); /* in destruction */ |
| 156 | if (udev_enum->pa != NULL) |
| 157 | prop_object_release(udev_enum->pa); |
| 158 | |
| 159 | while (!TAILQ_EMPTY(&udev_enum->list_entries)) { |
| 160 | le = TAILQ_FIRST(&udev_enum->list_entries); |
| 161 | TAILQ_REMOVE(&udev_enum->list_entries, le, link); |
| 162 | prop_object_release(le->dict); |
| 163 | free(le); |
| 164 | } |
| 165 | udev_unref(udev_enum->udev_ctx); |
| 166 | free(udev_enum); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | struct udev * |
| 171 | udev_enumerate_get_udev(struct udev_enumerate *udev_enum) |
| 172 | { |
| 173 | return udev_enum->udev_ctx; |
| 174 | } |
| 175 | |
| 176 | int |
| 177 | udev_enumerate_scan_devices(struct udev_enumerate *udev_enum) |
| 178 | { |
| 179 | prop_array_t pa; |
| 180 | |
| 181 | if (udev_enum->udev_ctx->gp_fd == -1) |
| 182 | return -1; |
| 183 | |
| 184 | pa = udevd_request_devs(udev_enum->udev_ctx->gp_fd); |
| 185 | if (pa == NULL) |
| 186 | return -1; |
| 187 | |
| 188 | prop_object_retain(pa); |
| 189 | |
| 190 | if (udev_enum->pa != NULL) |
| 191 | prop_object_release(udev_enum->pa); |
| 192 | |
| 193 | udev_enum->iter = NULL; |
| 194 | udev_enum->pa = pa; |
| 195 | |
| 196 | return 0; |
| 197 | } |
| 198 | |
| 199 | struct udev_list_entry * |
| 200 | udev_enumerate_get_list_entry(struct udev_enumerate *udev_enum) |
| 201 | { |
| 202 | struct udev_list_entry *le; |
| 203 | prop_object_iterator_t iter; |
| 204 | |
| 205 | /* If the list is not empty, assume it was populated in an earlier call */ |
| 206 | if (!TAILQ_EMPTY(&udev_enum->list_entries)) |
| 207 | return TAILQ_FIRST(&udev_enum->list_entries); |
| 208 | |
| 209 | iter = prop_array_iterator(udev_enum->pa); |
| 210 | if (iter == NULL) |
| 211 | return NULL; |
| 212 | |
| 213 | while ((dict = prop_object_iterator_next(iter)) != NULL) { |
| 214 | le = malloc(sizeof(struct udev_list_entry)); |
| 215 | if (le == NULL) |
| 216 | goto out; |
| 217 | |
| 218 | prop_object_retain(dict); |
| 219 | le->dict = dict; |
| 220 | TAILQ_INSERT_TAIL(&udev_enum->list_entries, le, link); |
| 221 | } |
| 222 | |
| 223 | le = TAILQ_FIRST(&udev_enum->list_entries); |
| 224 | |
| 225 | out: |
| 226 | prop_object_iterator_release(iter); |
| 227 | return le; |
| 228 | } |
| 229 | |
| 230 | prop_array_t |
| 231 | udev_enumerate_get_array(struct udev_enumerate *udev_enum) |
| 232 | { |
| 233 | return udev_enum->pa; |
| 234 | } |
| 235 | |
| 236 | struct udev_list_entry * |
| 237 | udev_list_entry_get_next(struct udev_list_entry *list_entry) |
| 238 | { |
| 239 | return TAILQ_NEXT(list_entry, link); |
| 240 | } |
| 241 | |
| 242 | prop_dictionary_t |
| 243 | udev_list_entry_get_dictionary(struct udev_list_entry *list_entry) |
| 244 | { |
| 245 | return list_entry->dict; |
| 246 | } |
| 247 | |
| 248 | #define udev_list_entry_foreach(list_entry, first_entry) \ |
| 249 | for(list_entry = first_entry; \ |
| 250 | list_entry != NULL; \ |
| 251 | list_entry = udev_list_entry_get_next(list_entry)) |
| 252 | |
| 253 | |
| 254 | |
| 255 | |
| 256 | |
| 257 | |
| 258 | struct udev_monitor * |
| 259 | udev_monitor_new(struct udev *udev_ctx) |
| 260 | { |
| 261 | struct udev_monitor *udev_monitor; |
| 262 | int ret, s; |
| 263 | |
| 264 | ret = conn_local_server(LISTEN_SOCKET_FILE, SOCK_STREAM, 0, &s); |
| 265 | if (ret < 0) |
| 266 | return NULL; |
| 267 | |
| 268 | udev_monitor = malloc(sizeof(struct udev_monitor)); |
| 269 | if (udev_monitor == NULL) |
| 270 | return NULL; |
| 271 | |
| 272 | udev_monitor->refs = 1; |
| 273 | udev_monitor->ev_filt = NULL; |
| 274 | udev_monitor->socket = s; |
| 275 | udev_monitor->user_socket = 1; |
| 276 | udev_monitor->udev_ctx = udev_ref(udev_ctx); |
| 277 | |
| 278 | return udev_monitor; |
| 279 | } |
| 280 | |
| 281 | |
| 282 | struct udev_monitor * |
| 283 | udev_monitor_ref(struct udev_monitor *udev_monitor) |
| 284 | { |
| 285 | atomic_add_int(&udev_monitor->refs, 1); |
| 286 | |
| 287 | return udev_monitor; |
| 288 | } |
| 289 | |
| 290 | void |
| 291 | udev_monitor_unref(struct udev_monitor *udev_monitor) |
| 292 | { |
| 293 | int refcount; |
| 294 | |
| 295 | refcount = atomic_fetchadd_int(&udev_monitor->refs, -1); |
| 296 | |
| 297 | if (refcount == 1) { |
| 298 | atomic_subtract_int(&udev_monitor->refs, 0x400); /* in destruction */ |
| 299 | if (udev_monitor->ev_filt != NULL) |
| 300 | prop_object_release(udev_monitor->ev_filt); |
| 301 | |
| 302 | if (udev_monitor->socket != -1) |
| 303 | close(udev_monitor->socket); |
| 304 | if (udev_monitor->user_socket != -1) |
| 305 | close(udev_monitor->user_socket); |
| 306 | |
| 307 | udev_unref(udev_monitor->udev_ctx); |
| 308 | free(udev_monitor); |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | struct udev * |
| 313 | udev_monitor_get_udev(struct udev_monitor *udev_monitor) |
| 314 | { |
| 315 | return udev_monitor->udev_ctx; |
| 316 | } |
| 317 | |
| 318 | int |
| 319 | udev_monitor_get_fd(struct udev_monitor *udev_monitor) |
| 320 | { |
| 321 | return udev_monitor->socket; |
| 322 | } |
| 323 | |
| 324 | struct udev_device * |
| 325 | udev_monitor_receive_device(struct udev_monitor *udev_monitor) |
| 326 | { |
| 327 | struct udev_device *udev_dev; |
| 328 | prop_dictionary_t dict; |
| 329 | prop_number_t pn; |
| 330 | char *xml; |
| 331 | int n, evtype; |
| 332 | |
| 333 | xml = malloc(12*1024*1024); |
| 334 | if (xml == NULL) |
| 335 | return NULL; |
| 336 | |
| 337 | if ((n = read_xml(udev_monitor->socket, xml, 12*1024*1024)) <= 0) { |
| 338 | free(xml); |
| 339 | return NULL; |
| 340 | } |
| 341 | |
| 342 | xml[n+1] = '\0'; |
| 343 | dict = prop_dictionary_internalize(xml); |
| 344 | free(xml); |
| 345 | if (dict == NULL) |
| 346 | return NULL; |
| 347 | |
| 348 | pn = prop_dictionary_get(dict, "evtype"); |
| 349 | if (pn == NULL) { |
| 350 | prop_object_release(dict); |
| 351 | return NULL; |
| 352 | } |
| 353 | |
| 354 | udev_dev = malloc(sizeof(struct udev_dev)); |
| 355 | if (udev_dev == NULL) { |
| 356 | prop_object_release(dict); |
| 357 | return NULL; |
| 358 | } |
| 359 | |
| 360 | udev_dev->refs = 1; |
| 361 | udev_dev->ev_type = prop_number_integer_value(pn); |
| 362 | udev_dev->dict = prop_dictionary_get(dict, "evdict"); |
| 363 | if (udev_dev->dict == NULL) { |
| 364 | free(udev_dev); |
| 365 | return NULL; |
| 366 | } |
| 367 | udev_dev->udev_ctx = udev_ref(udev_monitor->udev_ctx); |
| 368 | |
| 369 | out: |
| 370 | return udev_dev; |
| 371 | } |
| 372 | |
| 373 | int |
| 374 | udev_monitor_enable_receiving(struct udev_monitor *udev_monitor) |
| 375 | { |
| 376 | prop_dictionary_t dict; |
| 377 | char *xml; |
| 378 | /* ->socket, ->user_socket, ->ev_filt */ |
| 379 | |
| 380 | dict = udevd_get_command_dict(__DECONST(char *, "monitor")); |
| 381 | if (dict == NULL) |
| 382 | return -1; |
| 383 | |
| 384 | /* Add event filters to message, if available */ |
| 385 | if (udev_monitor->ev_filt != NULL) { |
| 386 | if (prop_dictionary_set(dict, "filters", |
| 387 | udev_monitor->ev_filt) == false) { |
| 388 | prop_object_release(dict); |
| 389 | return -1; |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | xml = prop_dictionary_externalize(dict); |
| 394 | prop_object_release(dict); |
| 395 | if (xml == NULL) |
| 396 | return -1; |
| 397 | |
| 398 | n = send_xml(udev_monitor->socket, xml); |
| 399 | free(xml); |
| 400 | if (n <= 0) |
| 401 | return NULL; |
| 402 | |
| 403 | return 0; |
| 404 | } |
| 405 | |
| 406 | int |
| 407 | udev_monitor_filter_add_match_subsystem_devtype(struct udev_monitor *udev_monitor, |
| 408 | const char *subsystem, |
| 409 | const char *devtype __unused) |
| 410 | { |
| 411 | int ret; |
| 412 | |
| 413 | ret = _udev_monitor_filter_add_match_gen(udev_monitor, |
| 414 | EVENT_FILTER_TYPE_WILDCARD, |
| 415 | 0, |
| 416 | "subsystem", |
| 417 | subsystem); |
| 418 | |
| 419 | return ret; |
| 420 | } |
| 421 | |
| 422 | int |
| 423 | udev_monitor_filter_add_match_expr(struct udev_monitor *udev_monitor, |
| 424 | const char *key, |
| 425 | char *expr) |
| 426 | { |
| 427 | int ret; |
| 428 | |
| 429 | ret = _udev_monitor_filter_add_match_gen(udev_monitor, |
| 430 | EVENT_FILTER_TYPE_WILDCARD, |
| 431 | 0, |
| 432 | key, |
| 433 | expr); |
| 434 | |
| 435 | return ret; |
| 436 | } |
| 437 | |
| 438 | int |
| 439 | udev_monitor_filter_add_nomatch_expr(struct udev_monitor *udev_monitor, |
| 440 | const char *key, |
| 441 | char *expr) |
| 442 | { |
| 443 | int ret; |
| 444 | |
| 445 | ret = _udev_monitor_filter_add_match_gen(udev_monitor, |
| 446 | EVENT_FILTER_TYPE_WILDCARD, |
| 447 | 1, |
| 448 | key, |
| 449 | expr); |
| 450 | |
| 451 | return ret; |
| 452 | } |
| 453 | |
| 454 | int |
| 455 | udev_monitor_filter_add_match_regex(struct udev_monitor *udev_monitor, |
| 456 | const char *key, |
| 457 | char *expr) |
| 458 | { |
| 459 | int ret; |
| 460 | |
| 461 | ret = _udev_monitor_filter_add_match_gen(udev_monitor, |
| 462 | EVENT_FILTER_TYPE_REGEX, |
| 463 | 0, |
| 464 | key, |
| 465 | expr); |
| 466 | |
| 467 | return ret; |
| 468 | } |
| 469 | |
| 470 | int |
| 471 | udev_monitor_filter_add_nomatch_regex(struct udev_monitor *udev_monitor, |
| 472 | const char *key, |
| 473 | char *expr) |
| 474 | { |
| 475 | int ret; |
| 476 | |
| 477 | ret = _udev_monitor_filter_add_match_gen(udev_monitor, |
| 478 | EVENT_FILTER_TYPE_REGEX, |
| 479 | 1, |
| 480 | key, |
| 481 | expr); |
| 482 | |
| 483 | return ret; |
| 484 | } |
| 485 | |
| 486 | int |
| 487 | _udev_monitor_filter_add_match_gen(struct udev_monitor *udev_monitor, |
| 488 | int type, |
| 489 | int neg, |
| 490 | const char *key, |
| 491 | char *expr) |
| 492 | { |
| 493 | prop_array_t pa; |
| 494 | prop_dictionary_t dict; |
| 495 | int error; |
| 496 | |
| 497 | if (subsystem == NULL) |
| 498 | return NULL; |
| 499 | |
| 500 | dict = prop_dictionary_create(); |
| 501 | if (dict == NULL) |
| 502 | return -1; |
| 503 | |
| 504 | error = _udev_dict_set_cstr(dict, "key", key); |
| 505 | if (error != 0) |
| 506 | goto error_out; |
| 507 | error = _udev_dict_set_int(dict, "type", type); |
| 508 | if (error != 0) |
| 509 | goto error_out; |
| 510 | error = _udev_dict_set_int(dict, "expr", expr); |
| 511 | if (error != 0) |
| 512 | goto error_out; |
| 513 | |
| 514 | if (neg) { |
| 515 | error = _udev_dict_set_int(dict, "negative", 1); |
| 516 | if (error != 0) |
| 517 | goto error_out; |
| 518 | } |
| 519 | |
| 520 | if (udev_monitor->ev_filt == NULL) { |
| 521 | pa = prop_array_create(); |
| 522 | if (pa == NULL) |
| 523 | goto error_out; |
| 524 | |
| 525 | udev_monitor->ev_filt = pa; |
| 526 | } |
| 527 | |
| 528 | if (prop_array_add(udev_monitor->ev_filt, dict) == false) |
| 529 | goto error_out; |
| 530 | |
| 531 | return 0; |
| 532 | |
| 533 | error_out: |
| 534 | prop_object_release(dict); |
| 535 | return -1; |
| 536 | } |
| 537 | |
| 538 | struct udev_device * |
| 539 | udev_device_ref(struct udev_device *udev_device) |
| 540 | { |
| 541 | atomic_add_int(&udev_device->refs, 1); |
| 542 | |
| 543 | return udev_device; |
| 544 | } |
| 545 | |
| 546 | void |
| 547 | udev_device_unref(struct udev_device *udev_device) |
| 548 | { |
| 549 | int refcount; |
| 550 | |
| 551 | refcount = atomic_fetchadd_int(&udev_device->refs, -1); |
| 552 | |
| 553 | if (refcount == 1) { |
| 554 | atomic_subtract_int(&udev_device->refs, 0x400); /* in destruction */ |
| 555 | if (udev_device->dict != NULL) |
| 556 | prop_object_release(udev_device->dict); |
| 557 | |
| 558 | udev_unref(udev_device->udev_ctx); |
| 559 | free(udev_device); |
| 560 | } |
| 561 | } |
| 562 | |
| 563 | prop_dictionary_t |
| 564 | udev_device_get_dictionary(struct udev_device *udev_device) |
| 565 | { |
| 566 | return udev_device->dict; |
| 567 | } |
| 568 | |
| 569 | struct udev * |
| 570 | udev_device_get_udev(struct udev_device *udev_device) |
| 571 | { |
| 572 | return udev_device->udev_ctx; |
| 573 | } |
| 574 | |
| 575 | int |
| 576 | send_xml(int s, char *xml) |
| 577 | { |
| 578 | ssize_t r,n; |
| 579 | size_t sz; |
| 580 | |
| 581 | sz = strlen(xml) + 1; |
| 582 | |
| 583 | r = send(s, &sz, sizeof(sz), 0); |
| 584 | if (r <= 0) |
| 585 | return r; |
| 586 | |
| 587 | r = 0; |
| 588 | while (r < (ssize_t)sz) { |
| 589 | n = send(s, xml+r, sz-r, 0); |
| 590 | if (n <= 0) |
| 591 | return n; |
| 592 | r += n; |
| 593 | } |
| 594 | |
| 595 | return r; |
| 596 | } |
| 597 | |
| 598 | int |
| 599 | read_xml(int s, char *buf, size_t buf_sz) |
| 600 | { |
| 601 | size_t sz; |
| 602 | int n, r; |
| 603 | |
| 604 | n = recv(s, &sz, sizeof(sz), MSG_WAITALL); |
| 605 | if (n <= 0) |
| 606 | return n; |
| 607 | |
| 608 | r = 0; |
| 609 | while ((r < (ssize_t)sz) && (r < (ssize_t)buf_sz)) { |
| 610 | n = recv(s, buf+r, sz-r, MSG_WAITALL); |
| 611 | if (n <= 0) |
| 612 | return n; |
| 613 | r += n; |
| 614 | } |
| 615 | |
| 616 | return r; |
| 617 | } |
| 618 | |
| 619 | |
| 620 | |
| 621 | static int |
| 622 | _udev_dict_set_cstr(prop_dictionary_t dict, const char *key, char *str) |
| 623 | { |
| 624 | prop_string_t ps; |
| 625 | |
| 626 | ps = prop_string_create_cstring(str); |
| 627 | if (ps == NULL) |
| 628 | return ENOMEM; |
| 629 | |
| 630 | if (prop_dictionary_set(dict, key, ps) == false) { |
| 631 | prop_object_release(ps); |
| 632 | return ENOMEM; |
| 633 | } |
| 634 | |
| 635 | prop_object_release(ps); |
| 636 | return 0; |
| 637 | } |
| 638 | |
| 639 | static int |
| 640 | _udev_dict_set_int(prop_dictionary_t dict, const char *key, int64_t val) |
| 641 | { |
| 642 | prop_number_t pn; |
| 643 | |
| 644 | pn = prop_number_create_integer(val); |
| 645 | if (pn == NULL) |
| 646 | return ENOMEM; |
| 647 | |
| 648 | if (prop_dictionary_set(dict, key, pn) == false) { |
| 649 | prop_object_release(pn); |
| 650 | return ENOMEM; |
| 651 | } |
| 652 | |
| 653 | prop_object_release(pn); |
| 654 | return 0; |
| 655 | } |
| 656 | |
| 657 | static int |
| 658 | _udev_dict_set_uint(prop_dictionary_t dict, const char *key, uint64_t val) |
| 659 | { |
| 660 | prop_number_t pn; |
| 661 | |
| 662 | pn = prop_number_create_unsigned_integer(val); |
| 663 | if (pn == NULL) |
| 664 | return ENOMEM; |
| 665 | |
| 666 | if (prop_dictionary_set(dict, key, pn) == false) { |
| 667 | prop_object_release(pn); |
| 668 | return ENOMEM; |
| 669 | } |
| 670 | |
| 671 | prop_object_release(pn); |
| 672 | return 0; |
| 673 | } |
| 674 | |
| 675 | int |
| 676 | conn_local_server(const char *sockfile, int socktype, int nonblock, |
| 677 | int *retsock) |
| 678 | { |
| 679 | int s; |
| 680 | struct sockaddr_un serv_addr; |
| 681 | |
| 682 | *retsock = -1; |
| 683 | if ((s = socket(AF_UNIX, socktype, 0)) < 0) |
| 684 | return -1; |
| 685 | |
| 686 | memset(&serv_addr, 0, sizeof(serv_addr)); |
| 687 | serv_addr.sun_family = AF_UNIX; |
| 688 | strncpy(serv_addr.sun_path, sockfile, SOCKFILE_NAMELEN); |
| 689 | serv_addr.sun_path[SOCKFILE_NAMELEN - 1] = '\0'; |
| 690 | |
| 691 | if (nonblock && unblock_descriptor(s) < 0) { |
| 692 | close(s); |
| 693 | return -1; |
| 694 | } |
| 695 | |
| 696 | *retsock = s; |
| 697 | return connect(s, (struct sockaddr *)&serv_addr, sizeof(serv_addr)); |
| 698 | } |
| 699 | |
| 700 | prop_dictionary_t |
| 701 | udevd_get_command_dict(char *command) |
| 702 | { |
| 703 | prop_dictionary_t dict; |
| 704 | int error; |
| 705 | |
| 706 | dict = prop_dictionary_create(); |
| 707 | if (dict == NULL) |
| 708 | return NULL; |
| 709 | |
| 710 | if ((error = _udev_dict_set_cstr(dict, "command", command))) |
| 711 | goto error_out; |
| 712 | |
| 713 | return dict; |
| 714 | |
| 715 | error_out: |
| 716 | prop_object_release(dict); |
| 717 | return NULL; |
| 718 | } |
| 719 | |
| 720 | prop_array_t |
| 721 | udevd_request_devs(int s) |
| 722 | { |
| 723 | prop_array_t pa; |
| 724 | prop_dictionary_t dict; |
| 725 | char *xml; |
| 726 | |
| 727 | int n, t; |
| 728 | |
| 729 | dict = udevd_get_command_dict(__DECONST(char *, "getdevs")); |
| 730 | if (dict == NULL) |
| 731 | return NULL; |
| 732 | |
| 733 | xml = prop_dictionary_externalize(dict); |
| 734 | prop_object_release(dict); |
| 735 | if (xml == NULL) |
| 736 | return NULL; |
| 737 | |
| 738 | n = send_xml(s, xml); |
| 739 | free(xml); |
| 740 | |
| 741 | if (n <= 0) |
| 742 | return NULL; |
| 743 | |
| 744 | xml = malloc(12*1024*1024); /* generous 12 MB */ |
| 745 | if ((n = read_xml(s, xml, 12*1024*1024)) <= 0) { |
| 746 | free(xml); |
| 747 | return NULL; |
| 748 | } |
| 749 | |
| 750 | xml[n+1] = '\0'; |
| 751 | pa = prop_array_internalize(xml); |
| 752 | free(xml); |
| 753 | return (pa); |
| 754 | } |
| 755 | |
| 756 | |
| 757 | |
| 758 | int |
| 759 | main(void) |
| 760 | { |
| 761 | int ret, s; |
| 762 | |
| 763 | ret = conn_local_server(LISTEN_SOCKET_FILE, SOCK_STREAM, 0, &s); |
| 764 | if (ret < 0) |
| 765 | err(1, "conn_local_server"); |
| 766 | |
| 767 | udevd_request_devs(s); |
| 768 | |
| 769 | return 0; |
| 770 | } |