Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 1 | /* SNMP-like status interface |
| 2 | * |
| 3 | * (C) 2010-2011 by Daniel Willmann <daniel@totalueberwachung.de> |
| 4 | * (C) 2010-2011 by On-Waves |
| 5 | * |
| 6 | * All Rights Reserved |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License along |
| 19 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <ctype.h> |
| 25 | #include <errno.h> |
| 26 | #include <stdio.h> |
| 27 | #include <stdlib.h> |
| 28 | #include <string.h> |
| 29 | #include <time.h> |
| 30 | #include <unistd.h> |
| 31 | |
| 32 | #include <openbsc/control_cmd.h> |
| 33 | #include <openbsc/debug.h> |
| 34 | #include <openbsc/vty.h> |
| 35 | |
| 36 | #include <osmocom/core/msgb.h> |
| 37 | #include <osmocom/core/talloc.h> |
| 38 | |
| 39 | #include <osmocom/vty/command.h> |
| 40 | #include <osmocom/vty/vector.h> |
| 41 | |
| 42 | extern vector ctrl_node_vec; |
| 43 | |
| 44 | static struct ctrl_cmd_map ccm[] = { |
| 45 | {"GET", CTRL_TYPE_GET}, |
| 46 | {"SET", CTRL_TYPE_SET}, |
| 47 | {"GET_REPLY", CTRL_TYPE_GET_REPLY}, |
| 48 | {"SET_REPLY", CTRL_TYPE_SET_REPLY}, |
| 49 | {"TRAP", CTRL_TYPE_TRAP}, |
| 50 | {"ERROR", CTRL_TYPE_ERROR}, |
| 51 | {NULL} |
| 52 | }; |
| 53 | |
| 54 | int ctrl_cmd_str2type(char *s) |
| 55 | { |
| 56 | int i; |
| 57 | for (i=0; ccm[i].cmd != NULL; i++) { |
| 58 | if (strcasecmp(s, ccm[i].cmd) == 0) |
| 59 | return ccm[i].type; |
| 60 | } |
| 61 | return CTRL_TYPE_UNKNOWN; |
| 62 | } |
| 63 | |
| 64 | char *ctrl_cmd_type2str(int type) |
| 65 | { |
| 66 | int i; |
| 67 | for (i=0; ccm[i].cmd != NULL; i++) { |
| 68 | if (ccm[i].type == type) |
| 69 | return ccm[i].cmd; |
| 70 | } |
| 71 | return NULL; |
| 72 | } |
| 73 | |
| 74 | /* Functions from libosmocom */ |
| 75 | extern vector cmd_make_descvec(const char *string, const char *descstr); |
| 76 | |
| 77 | /* Get the ctrl_cmd_element that matches this command */ |
| 78 | static struct ctrl_cmd_element *ctrl_cmd_get_element_match(vector vline, vector node) |
| 79 | { |
| 80 | int index, j; |
| 81 | const char *desc; |
| 82 | struct ctrl_cmd_element *cmd_el; |
| 83 | struct ctrl_cmd_struct *cmd_desc; |
| 84 | char *str; |
| 85 | |
| 86 | for (index = 0; index < vector_active(node); index++) { |
| 87 | if ((cmd_el = vector_slot(node, index))) { |
| 88 | cmd_desc = &cmd_el->strcmd; |
| 89 | if (cmd_desc->nr_commands > vector_active(vline)) |
| 90 | continue; |
| 91 | for (j =0; j < vector_active(vline); j++) { |
| 92 | str = vector_slot(vline, j); |
| 93 | desc = cmd_desc->command[j]; |
| 94 | if (desc[0] == '*') |
| 95 | return cmd_el; /* Partial match */ |
| 96 | if (strcmp(desc, str) != 0) |
| 97 | break; |
| 98 | } |
| 99 | /* We went through all the elements and all matched */ |
| 100 | if (j == cmd_desc->nr_commands) |
| 101 | return cmd_el; |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | return NULL; |
| 106 | } |
| 107 | |
| 108 | int ctrl_cmd_exec(vector vline, struct ctrl_cmd *command, vector node, void *data) |
| 109 | { |
| 110 | int ret = CTRL_CMD_ERROR; |
| 111 | struct ctrl_cmd_element *cmd_el; |
| 112 | |
| 113 | if ((command->type != CTRL_TYPE_GET) && (command->type != CTRL_TYPE_SET)) { |
| 114 | command->reply = "Trying to execute something not GET or SET"; |
| 115 | goto out; |
| 116 | } |
| 117 | if ((command->type == CTRL_TYPE_SET) && (!command->value)) { |
| 118 | command->reply = "SET without a value"; |
| 119 | goto out; |
| 120 | } |
| 121 | |
| 122 | if (!vline) |
| 123 | goto out; |
| 124 | |
| 125 | cmd_el = ctrl_cmd_get_element_match(vline, node); |
| 126 | |
| 127 | if (!cmd_el) { |
| 128 | command->reply = "Command not found"; |
| 129 | goto out; |
| 130 | } |
| 131 | |
| 132 | if (command->type == CTRL_TYPE_SET) { |
| 133 | if (!cmd_el->set) { |
| 134 | command->reply = "SET not implemented"; |
| 135 | goto out; |
| 136 | } |
| 137 | if (cmd_el->verify) { |
| 138 | if ((ret = cmd_el->verify(command, command->value, data))) { |
| 139 | ret = CTRL_CMD_ERROR; |
| 140 | command->reply = "Value failed verification."; |
| 141 | goto out; |
| 142 | } |
| 143 | } else if (cmd_el->param) { |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 144 | LOGP(DLINP, LOGL_NOTICE, "Parameter verification unimplemented, continuing without\n"); |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 145 | } |
| 146 | ret = cmd_el->set(command, data); |
| 147 | goto out; |
| 148 | } else if (command->type == CTRL_TYPE_GET) { |
| 149 | if (!cmd_el->get) { |
| 150 | command->reply = "GET not implemented"; |
| 151 | goto out; |
| 152 | } |
| 153 | ret = cmd_el->get(command, data); |
| 154 | goto out; |
| 155 | } |
| 156 | out: |
| 157 | if (ret == CTRL_CMD_REPLY) { |
| 158 | if (command->type == CTRL_TYPE_SET) { |
| 159 | command->type = CTRL_TYPE_SET_REPLY; |
| 160 | } else if (command->type == CTRL_TYPE_GET) { |
| 161 | command->type = CTRL_TYPE_GET_REPLY; |
| 162 | } |
| 163 | } else if (ret == CTRL_CMD_ERROR) { |
| 164 | command->type = CTRL_TYPE_ERROR; |
| 165 | } |
| 166 | return ret; |
| 167 | } |
| 168 | |
| 169 | static void add_word(struct ctrl_cmd_struct *cmd, |
| 170 | const char *start, const char *end) |
| 171 | { |
| 172 | if (!cmd->command) { |
| 173 | cmd->command = talloc_zero_array(tall_vty_vec_ctx, |
| 174 | char*, 1); |
| 175 | cmd->nr_commands = 0; |
| 176 | } else { |
| 177 | cmd->command = talloc_realloc(tall_vty_vec_ctx, |
| 178 | cmd->command, char*, |
| 179 | cmd->nr_commands + 1); |
| 180 | } |
| 181 | |
| 182 | cmd->command[cmd->nr_commands++] = talloc_strndup(cmd->command, |
| 183 | start, end - start); |
| 184 | } |
| 185 | |
| 186 | static void create_cmd_struct(struct ctrl_cmd_struct *cmd, const char *name) |
| 187 | { |
| 188 | const char *cur, *word; |
| 189 | |
| 190 | for (cur = name, word = NULL; cur[0] != '\0'; ++cur) { |
| 191 | /* warn about optionals */ |
| 192 | if (cur[0] == '(' || cur[0] == ')' || cur[0] == '|') { |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 193 | LOGP(DLINP, LOGL_ERROR, |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 194 | "Optionals are not supported in '%s'\n", name); |
| 195 | goto failure; |
| 196 | } |
| 197 | |
| 198 | if (isspace(cur[0])) { |
| 199 | if (word) { |
| 200 | add_word(cmd, word, cur); |
| 201 | word = NULL; |
| 202 | } |
| 203 | continue; |
| 204 | } |
| 205 | |
| 206 | if (!word) |
| 207 | word = cur; |
| 208 | } |
| 209 | |
| 210 | if (word) |
| 211 | add_word(cmd, word, cur); |
| 212 | |
| 213 | return; |
| 214 | failure: |
| 215 | cmd->nr_commands = 0; |
| 216 | talloc_free(cmd->command); |
| 217 | } |
| 218 | |
| 219 | int ctrl_cmd_install(enum ctrl_node_type node, struct ctrl_cmd_element *cmd) |
| 220 | { |
| 221 | vector cmds_vec; |
| 222 | |
| 223 | cmds_vec = vector_lookup_ensure(ctrl_node_vec, node); |
| 224 | |
| 225 | if (!cmds_vec) { |
| 226 | cmds_vec = vector_init(5); |
| 227 | if (!cmds_vec) { |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 228 | LOGP(DLINP, LOGL_ERROR, "vector_init failed.\n"); |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 229 | return -ENOMEM; |
| 230 | } |
| 231 | vector_set_index(ctrl_node_vec, node, cmds_vec); |
| 232 | } |
| 233 | |
| 234 | vector_set(cmds_vec, cmd); |
| 235 | |
| 236 | create_cmd_struct(&cmd->strcmd, cmd->name); |
| 237 | return 0; |
| 238 | } |
| 239 | |
Daniel Willmann | ac950cb | 2011-03-17 15:37:54 +0100 | [diff] [blame] | 240 | struct ctrl_cmd *ctrl_cmd_cpy(void *ctx, struct ctrl_cmd *cmd) |
| 241 | { |
| 242 | struct ctrl_cmd *cmd2; |
| 243 | |
| 244 | cmd2 = talloc_zero(ctx, struct ctrl_cmd); |
| 245 | if (!cmd2) |
| 246 | return NULL; |
| 247 | |
| 248 | cmd2->type = cmd->type; |
| 249 | if (cmd->id) { |
| 250 | cmd2->id = talloc_strdup(cmd2, cmd->id); |
| 251 | if (!cmd2->id) |
| 252 | goto err; |
| 253 | } |
| 254 | if (cmd->variable) { |
| 255 | cmd2->variable = talloc_strdup(cmd2, cmd->variable); |
| 256 | if (!cmd2->variable) |
| 257 | goto err; |
| 258 | } |
| 259 | if (cmd->value) { |
| 260 | cmd2->value = talloc_strdup(cmd2, cmd->value); |
| 261 | if (!cmd2->value) |
| 262 | goto err; |
| 263 | } |
| 264 | if (cmd->reply) { |
| 265 | cmd2->reply = talloc_strdup(cmd2, cmd->reply); |
| 266 | if (!cmd2->reply) |
| 267 | goto err; |
| 268 | } |
| 269 | |
| 270 | return cmd2; |
| 271 | err: |
| 272 | talloc_free(cmd2); |
| 273 | return NULL; |
| 274 | } |
| 275 | |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 276 | struct ctrl_cmd *ctrl_cmd_parse(void *ctx, struct msgb *msg) |
| 277 | { |
| 278 | char *str, *tmp, *saveptr = NULL; |
| 279 | char *var, *val; |
| 280 | struct ctrl_cmd *cmd; |
| 281 | |
| 282 | cmd = talloc_zero(ctx, struct ctrl_cmd); |
| 283 | if (!cmd) { |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 284 | LOGP(DLINP, LOGL_ERROR, "Failed to allocate.\n"); |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 285 | return NULL; |
| 286 | } |
| 287 | |
| 288 | /* Make sure input is NULL terminated */ |
| 289 | msgb_put_u8(msg, 0); |
| 290 | str = (char *) msg->l2h; |
| 291 | |
| 292 | tmp = strtok_r(str, " ", &saveptr); |
| 293 | if (!tmp) { |
| 294 | cmd->type = CTRL_TYPE_ERROR; |
| 295 | cmd->id = "err"; |
| 296 | cmd->reply = "Request malformed"; |
| 297 | goto err; |
| 298 | } |
| 299 | |
| 300 | cmd->type = ctrl_cmd_str2type(tmp); |
| 301 | if (cmd->type == CTRL_TYPE_UNKNOWN) { |
| 302 | cmd->type = CTRL_TYPE_ERROR; |
| 303 | cmd->id = "err"; |
| 304 | cmd->reply = "Request type unknown"; |
| 305 | goto err; |
| 306 | } |
| 307 | |
| 308 | tmp = strtok_r(NULL, " ", &saveptr); |
| 309 | |
| 310 | if (!tmp) { |
| 311 | cmd->type = CTRL_TYPE_ERROR; |
| 312 | cmd->id = "err"; |
| 313 | cmd->reply = "Missing ID"; |
| 314 | goto err; |
| 315 | } |
| 316 | cmd->id = talloc_strdup(cmd, tmp); |
| 317 | if (!cmd->id) |
| 318 | goto oom; |
| 319 | |
| 320 | switch (cmd->type) { |
| 321 | case CTRL_TYPE_GET: |
| 322 | var = strtok_r(NULL, " ", &saveptr); |
| 323 | if (!var) { |
| 324 | cmd->type = CTRL_TYPE_ERROR; |
| 325 | cmd->reply = "GET incomplete"; |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 326 | LOGP(DLINP, LOGL_NOTICE, "GET Command incomplete\n"); |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 327 | goto err; |
| 328 | } |
| 329 | cmd->variable = talloc_strdup(cmd, var); |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 330 | LOGP(DLINP, LOGL_DEBUG, "Command: GET %s\n", cmd->variable); |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 331 | break; |
| 332 | case CTRL_TYPE_SET: |
| 333 | var = strtok_r(NULL, " ", &saveptr); |
| 334 | val = strtok_r(NULL, " ", &saveptr); |
| 335 | if (!var || !val) { |
| 336 | cmd->type = CTRL_TYPE_ERROR; |
| 337 | cmd->reply = "SET incomplete"; |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 338 | LOGP(DLINP, LOGL_NOTICE, "SET Command incomplete\n"); |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 339 | goto err; |
| 340 | } |
| 341 | cmd->variable = talloc_strdup(cmd, var); |
| 342 | cmd->value = talloc_strdup(cmd, val); |
| 343 | if (!cmd->variable || !cmd->value) |
| 344 | goto oom; |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 345 | LOGP(DLINP, LOGL_DEBUG, "Command: SET %s = %s\n", cmd->variable, cmd->value); |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 346 | break; |
| 347 | case CTRL_TYPE_GET_REPLY: |
| 348 | case CTRL_TYPE_SET_REPLY: |
| 349 | case CTRL_TYPE_TRAP: |
| 350 | var = strtok_r(NULL, " ", &saveptr); |
| 351 | val = strtok_r(NULL, " ", &saveptr); |
| 352 | if (!var || !val) { |
| 353 | cmd->type = CTRL_TYPE_ERROR; |
| 354 | cmd->reply = "Trap/Reply incomplete"; |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 355 | LOGP(DLINP, LOGL_NOTICE, "Trap/Reply incomplete\n"); |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 356 | goto err; |
| 357 | } |
| 358 | cmd->variable = talloc_strdup(cmd, var); |
| 359 | cmd->reply = talloc_strdup(cmd, val); |
| 360 | if (!cmd->variable || !cmd->reply) |
| 361 | goto oom; |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 362 | LOGP(DLINP, LOGL_DEBUG, "Command: TRAP/REPLY %s: %s\n", cmd->variable, cmd->reply); |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 363 | break; |
| 364 | case CTRL_TYPE_ERROR: |
| 365 | var = strtok_r(NULL, "\0", &saveptr); |
| 366 | if (!var) { |
| 367 | cmd->reply = ""; |
| 368 | goto err; |
| 369 | } |
| 370 | cmd->reply = talloc_strdup(cmd, var); |
| 371 | if (!cmd->reply) |
| 372 | goto oom; |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 373 | LOGP(DLINP, LOGL_DEBUG, "Command: ERROR %s\n", cmd->reply); |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 374 | break; |
| 375 | case CTRL_TYPE_UNKNOWN: |
| 376 | default: |
| 377 | cmd->type = CTRL_TYPE_ERROR; |
| 378 | cmd->reply = "Unknown type"; |
| 379 | goto err; |
| 380 | } |
| 381 | |
| 382 | return cmd; |
| 383 | oom: |
| 384 | cmd->type = CTRL_TYPE_ERROR; |
| 385 | cmd->id = "err"; |
| 386 | cmd->reply = "OOM"; |
| 387 | err: |
| 388 | talloc_free(cmd); |
| 389 | return NULL; |
| 390 | } |
| 391 | |
| 392 | struct msgb *ctrl_cmd_make(struct ctrl_cmd *cmd) |
| 393 | { |
| 394 | struct msgb *msg; |
| 395 | char *type, *tmp; |
| 396 | |
| 397 | if (!cmd->id) |
| 398 | return NULL; |
| 399 | |
| 400 | msg = msgb_alloc_headroom(4096, 128, "ctrl command make"); |
| 401 | if (!msg) |
| 402 | return NULL; |
| 403 | |
| 404 | type = ctrl_cmd_type2str(cmd->type); |
| 405 | |
| 406 | switch (cmd->type) { |
| 407 | case CTRL_TYPE_GET: |
| 408 | if (!cmd->variable) |
| 409 | goto err; |
| 410 | |
| 411 | tmp = talloc_asprintf(cmd, "%s %s %s", type, cmd->id, cmd->variable); |
| 412 | if (!tmp) { |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 413 | LOGP(DLINP, LOGL_ERROR, "Failed to allocate cmd.\n"); |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 414 | goto err; |
| 415 | } |
| 416 | |
| 417 | msg->l2h = msgb_put(msg, strlen(tmp)); |
| 418 | memcpy(msg->l2h, tmp, strlen(tmp)); |
| 419 | talloc_free(tmp); |
| 420 | break; |
| 421 | case CTRL_TYPE_SET: |
| 422 | if (!cmd->variable || !cmd->value) |
| 423 | goto err; |
| 424 | |
| 425 | tmp = talloc_asprintf(cmd, "%s %s %s %s", type, cmd->id, cmd->variable, |
| 426 | cmd->value); |
| 427 | if (!tmp) { |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 428 | LOGP(DLINP, LOGL_ERROR, "Failed to allocate cmd.\n"); |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 429 | goto err; |
| 430 | } |
| 431 | |
| 432 | msg->l2h = msgb_put(msg, strlen(tmp)); |
| 433 | memcpy(msg->l2h, tmp, strlen(tmp)); |
| 434 | talloc_free(tmp); |
| 435 | break; |
| 436 | case CTRL_TYPE_GET_REPLY: |
| 437 | case CTRL_TYPE_SET_REPLY: |
| 438 | case CTRL_TYPE_TRAP: |
| 439 | if (!cmd->variable || !cmd->reply) |
| 440 | goto err; |
| 441 | |
| 442 | tmp = talloc_asprintf(cmd, "%s %s %s %s", type, cmd->id, cmd->variable, |
| 443 | cmd->reply); |
| 444 | if (!tmp) { |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 445 | LOGP(DLINP, LOGL_ERROR, "Failed to allocate cmd.\n"); |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 446 | goto err; |
| 447 | } |
| 448 | |
| 449 | msg->l2h = msgb_put(msg, strlen(tmp)); |
| 450 | memcpy(msg->l2h, tmp, strlen(tmp)); |
| 451 | talloc_free(tmp); |
| 452 | break; |
| 453 | case CTRL_TYPE_ERROR: |
| 454 | if (!cmd->reply) |
| 455 | goto err; |
| 456 | |
| 457 | tmp = talloc_asprintf(cmd, "%s %s %s", type, cmd->id, |
| 458 | cmd->reply); |
| 459 | if (!tmp) { |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 460 | LOGP(DLINP, LOGL_ERROR, "Failed to allocate cmd.\n"); |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 461 | goto err; |
| 462 | } |
| 463 | |
| 464 | msg->l2h = msgb_put(msg, strlen(tmp)); |
| 465 | memcpy(msg->l2h, tmp, strlen(tmp)); |
| 466 | talloc_free(tmp); |
| 467 | break; |
| 468 | default: |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame^] | 469 | LOGP(DLINP, LOGL_NOTICE, "Unknown command type %i\n", cmd->type); |
Daniel Willmann | 27da244 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 470 | goto err; |
| 471 | break; |
| 472 | } |
| 473 | |
| 474 | return msg; |
| 475 | |
| 476 | err: |
| 477 | msgb_free(msg); |
| 478 | return NULL; |
| 479 | } |