2 #if defined(HAVE_CONFIG_H)
12 #include <sys/types.h>
15 #include <pb-protocol/pb-protocol.h>
16 #include <process/process.h>
17 #include <system/system.h>
18 #include <talloc/talloc.h>
20 #include <util/util.h>
21 #include <i18n/i18n.h>
23 #include "device-handler.h"
29 #include <security/security.h>
31 static const char *boot_hook_dir = PKG_SYSCONF_DIR "/boot.d";
33 BOOT_HOOK_EXIT_OK = 0,
34 BOOT_HOOK_EXIT_UPDATE = 2,
37 static void __attribute__((format(__printf__, 4, 5))) update_status(
38 boot_status_fn fn, void *arg, int type, char *fmt, ...)
44 status.message = talloc_vasprintf(NULL, fmt, ap);
48 status.backlog = false;
50 pb_debug("boot status: [%d] %s\n", type, status.message);
54 talloc_free(status.message);
58 * kexec_load - kexec load helper.
60 static int kexec_load(struct boot_task *boot_task)
62 struct process *process;
63 char *s_initrd = NULL;
71 boot_task->local_initrd_override = NULL;
72 boot_task->local_dtb_override = NULL;
73 boot_task->local_image_override = NULL;
75 if ((result = validate_boot_files(boot_task))) {
76 if (result == KEXEC_LOAD_DECRYPTION_FALURE) {
77 pb_log("%s: Aborting kexec due to"
78 " decryption failure\n", __func__);
80 if (result == KEXEC_LOAD_SIGNATURE_FAILURE) {
81 pb_log("%s: Aborting kexec due to signature"
82 " verification failure\n", __func__);
88 const char* local_initrd = (boot_task->local_initrd_override) ?
89 boot_task->local_initrd_override : boot_task->local_initrd;
90 const char* local_dtb = (boot_task->local_dtb_override) ?
91 boot_task->local_dtb_override : boot_task->local_dtb;
92 const char* local_image = (boot_task->local_image_override) ?
93 boot_task->local_image_override : boot_task->local_image;
95 process = process_create(boot_task);
97 pb_log("%s: failed to create process\n", __func__);
101 process->path = pb_system_apps.kexec;
102 process->argv = argv;
103 process->keep_stdout = true;
104 process->add_stderr = true;
107 *p++ = pb_system_apps.kexec; /* 1 */
111 s_initrd = talloc_asprintf(boot_task, "--initrd=%s",
114 *p++ = s_initrd; /* 3 */
118 s_dtb = talloc_asprintf(boot_task, "--dtb=%s",
121 *p++ = s_dtb; /* 4 */
124 s_args = talloc_asprintf(boot_task, "--append=%s",
125 boot_task->args ?: "\"\"");
127 *p++ = s_args; /* 5 */
129 *p++ = local_image; /* 6 */
132 result = process_run_sync(process);
134 pb_log("%s: failed to run process\n", __func__);
138 result = process->exit_status;
141 pb_log("%s: failed: (%d)\n", __func__, result);
142 update_status(boot_task->status_fn, boot_task->status_arg,
143 STATUS_ERROR, "%s", process->stdout_buf);
147 validate_boot_files_cleanup(boot_task);
153 * kexec_reboot - Helper to boot the new kernel.
155 * Must only be called after a successful call to kexec_load().
158 static int kexec_reboot(struct boot_task *task)
162 /* First try running shutdown. Init scripts should run 'exec -e' */
163 result = process_run_simple(task, pb_system_apps.shutdown, "-r",
166 /* On error, force a kexec with the -e option */
168 result = process_run_simple(task, pb_system_apps.kexec,
173 pb_log("%s: failed: (%d)\n", __func__, result);
175 /* okay, kexec -e -f */
177 result = process_run_simple(task, pb_system_apps.kexec,
182 pb_log("%s: failed: (%d)\n", __func__, result);
188 static void boot_hook_update_param(void *ctx, struct boot_task *task,
189 const char *name, const char *value)
194 } *param, params[] = {
195 { "boot_image", &task->local_image },
196 { "boot_initrd", &task->local_initrd },
197 { "boot_dtb", &task->local_dtb },
198 { "boot_args", &task->args },
202 for (param = params; param->name; param++) {
203 if (strcmp(param->name, name))
206 *param->p = talloc_strdup(ctx, value);
211 static void boot_hook_update(struct boot_task *task, const char *hookname,
214 char *line, *name, *val, *sep;
215 char *saveptr = NULL;
217 for (;; buf = NULL) {
219 line = strtok_r(buf, "\n", &saveptr);
223 sep = strchr(line, '=');
231 boot_hook_update_param(task, task, name, val);
233 pb_log("boot hook %s specified %s=%s\n",
234 hookname, name, val);
238 static void boot_hook_setenv(struct boot_task *task)
240 unsetenv("boot_image");
241 unsetenv("boot_initrd");
242 unsetenv("boot_dtb");
243 unsetenv("boot_args");
244 unsetenv("boot_console");
246 setenv("boot_image", task->local_image, 1);
247 if (task->local_initrd)
248 setenv("boot_initrd", task->local_initrd, 1);
250 setenv("boot_dtb", task->local_dtb, 1);
252 setenv("boot_args", task->args, 1);
253 if (task->boot_console)
254 setenv("boot_console", task->boot_console, 1);
257 static int hook_filter(const struct dirent *dirent)
259 return dirent->d_type == DT_REG || dirent->d_type == DT_LNK;
262 static int hook_cmp(const struct dirent **a, const struct dirent **b)
264 return strcmp((*a)->d_name, (*b)->d_name);
267 static void run_boot_hooks(struct boot_task *task)
269 struct dirent **hooks;
272 n = scandir(boot_hook_dir, &hooks, hook_filter, hook_cmp);
276 update_status(task->status_fn, task->status_arg, STATUS_INFO,
277 _("Running boot hooks"));
279 boot_hook_setenv(task);
281 for (i = 0; i < n; i++) {
282 const char *argv[2] = { NULL, NULL };
283 struct process *process;
287 path = join_paths(task, boot_hook_dir, hooks[i]->d_name);
289 if (access(path, X_OK)) {
294 process = process_create(task);
297 process->path = path;
298 process->argv = argv;
299 process->keep_stdout = true;
301 pb_log("running boot hook %s\n", hooks[i]->d_name);
303 rc = process_run_sync(process);
305 pb_log("boot hook exec failed!\n");
307 } else if (WIFEXITED(process->exit_status) &&
308 WEXITSTATUS(process->exit_status)
309 == BOOT_HOOK_EXIT_UPDATE) {
310 /* if the hook returned with BOOT_HOOK_EXIT_UPDATE,
311 * then we process stdout to look for updated params
313 boot_hook_update(task, hooks[i]->d_name,
314 process->stdout_buf);
315 boot_hook_setenv(task);
318 process_release(process);
325 static bool load_pending(struct load_url_result *result)
327 return !result || result->status == LOAD_ASYNC;
330 static int check_load(struct boot_task *task, const char *name,
331 struct load_url_result *result)
336 if (result->status != LOAD_ERROR) {
337 update_status(task->status_fn, task->status_arg,
339 _("Loaded %s from %s"), name,
340 pb_url_to_string(result->url));
344 update_status(task->status_fn, task->status_arg,
346 _("Couldn't load %s from %s"), name,
347 pb_url_to_string(result->url));
351 static void cleanup_load(struct load_url_result *result)
355 if (result->status != LOAD_OK)
357 if (!result->cleanup_local)
359 unlink(result->local);
362 static void cleanup_cancellations(struct boot_task *task,
363 struct load_url_result *cur_result)
365 struct boot_resource *resource;
366 struct load_url_result *result;
367 bool pending = false;
369 list_for_each_entry(&task->resources, resource, list) {
370 result = resource->result;
372 /* Nothing to do if a load hasn't actually started yet */
376 /* We need to cleanup and free any completed loads */
377 if (result == cur_result || result->status == LOAD_OK
378 || result->status == LOAD_ERROR) {
379 cleanup_load(result);
380 /* ... and cancel any pending loads, which we'll free in
381 * the completion callback */
382 } else if (result->status == LOAD_ASYNC) {
383 load_url_async_cancel(result);
386 /* if we're waiting for a cancellation, we still need to
387 * wait for the completion before freeing the boot task */
388 } else if (result->status == LOAD_CANCELLED) {
397 static void boot_process(struct load_url_result *result, void *data)
399 struct boot_task *task = data;
400 struct boot_resource *resource;
403 if (task->cancelled) {
404 cleanup_cancellations(task, result);
408 list_for_each_entry(&task->resources, resource, list)
409 if (load_pending(resource->result))
412 list_for_each_entry(&task->resources, resource, list) {
413 if (check_load(task, resource->name, resource->result))
415 *resource->local_path = resource->result->local;
418 run_boot_hooks(task);
420 update_status(task->status_fn, task->status_arg, STATUS_INFO,
421 _("Performing kexec load"));
423 rc = kexec_load(task);
424 pb_log("%s: kexec_load returned %d\n", __func__, rc);
425 if (rc == KEXEC_LOAD_DECRYPTION_FALURE) {
426 update_status(task->status_fn, task->status_arg,
427 STATUS_ERROR, _("Decryption failed"));
429 else if (rc == KEXEC_LOAD_SIGNATURE_FAILURE) {
430 update_status(task->status_fn, task->status_arg,
432 _("Signature verification failed"));
434 else if (rc == KEXEC_LOAD_SIG_SETUP_INVALID) {
435 update_status(task->status_fn, task->status_arg,
437 _("Invalid signature configuration"));
441 list_for_each_entry(&task->resources, resource, list)
442 cleanup_load(resource->result);
445 update_status(task->status_fn, task->status_arg,
446 STATUS_INFO, _("Performing kexec reboot"));
448 rc = kexec_reboot(task);
450 update_status(task->status_fn, task->status_arg,
452 _("kexec reboot failed"));
457 static int start_url_load(struct boot_task *task, struct boot_resource *res)
462 res->result = load_url_async(task, res->url, boot_process,
463 task, NULL, task->status_arg);
465 update_status(task->status_fn, task->status_arg,
466 STATUS_ERROR, _("Error loading %s"),
473 static struct boot_resource *add_boot_resource(struct boot_task *task,
474 const char *name, struct pb_url *url,
475 const char **local_path)
477 struct boot_resource *res;
482 res = talloc_zero(task, struct boot_resource);
486 res->name = talloc_strdup(res, name);
487 res->url = pb_url_copy(res, url);
488 res->local_path = local_path;
490 list_add(&task->resources, &res->list);
494 struct boot_task *boot(void *ctx, struct discover_boot_option *opt,
495 struct boot_command *cmd, int dry_run,
496 boot_status_fn status_fn, void *status_arg)
498 struct pb_url *image = NULL, *initrd = NULL, *dtb = NULL;
499 struct pb_url *image_sig = NULL, *initrd_sig = NULL, *dtb_sig = NULL,
501 struct boot_resource *image_res, *initrd_res, *dtb_res, *tmp;
502 const struct config *config = config_get();
503 struct boot_task *boot_task;
504 const char *boot_desc;
508 if (opt && opt->option->name)
509 boot_desc = opt->option->name;
510 else if (cmd && cmd->boot_image_file)
511 boot_desc = cmd->boot_image_file;
513 boot_desc = _("(unknown)");
515 update_status(status_fn, status_arg, STATUS_INFO,
516 _("Booting %s"), boot_desc);
518 if (cmd && cmd->boot_image_file) {
519 image = pb_url_parse(opt, cmd->boot_image_file);
520 } else if (opt && opt->boot_image) {
521 image = opt->boot_image->url;
523 pb_log("%s: no image specified\n", __func__);
524 update_status(status_fn, status_arg, STATUS_INFO,
525 _("Boot failed: no image specified"));
529 if (cmd && cmd->initrd_file) {
530 initrd = pb_url_parse(opt, cmd->initrd_file);
531 } else if (opt && opt->initrd) {
532 initrd = opt->initrd->url;
535 if (cmd && cmd->dtb_file) {
536 dtb = pb_url_parse(opt, cmd->dtb_file);
537 } else if (opt && opt->dtb) {
541 if (opt && opt->proxy) {
542 setenv("http_proxy", opt->proxy, 1);
543 setenv("https_proxy", opt->proxy, 1);
546 boot_task = talloc_zero(ctx, struct boot_task);
547 boot_task->dry_run = dry_run;
548 boot_task->status_fn = status_fn;
549 boot_task->status_arg = status_arg;
550 list_init(&boot_task->resources);
552 lockdown_type = lockdown_status();
553 boot_task->verify_signature = (lockdown_type == PB_LOCKDOWN_SIGN);
554 boot_task->decrypt_files = (lockdown_type == PB_LOCKDOWN_DECRYPT);
556 if (cmd && cmd->boot_args) {
557 boot_task->args = talloc_strdup(boot_task, cmd->boot_args);
558 } else if (opt && opt->option->boot_args) {
559 boot_task->args = talloc_strdup(boot_task,
560 opt->option->boot_args);
562 boot_task->args = NULL;
565 if (cmd && cmd->console && !config->manual_console)
566 boot_task->boot_console = talloc_strdup(boot_task, cmd->console);
568 boot_task->boot_console = config ? config->boot_console : NULL;
570 if (boot_task->verify_signature || boot_task->decrypt_files) {
571 if (cmd && cmd->args_sig_file) {
572 cmdline_sig = pb_url_parse(opt, cmd->args_sig_file);
573 } else if (opt && opt->args_sig_file) {
574 cmdline_sig = opt->args_sig_file->url;
576 pb_log("%s: no command line signature file"
577 " specified\n", __func__);
578 update_status(status_fn, status_arg, STATUS_INFO,
579 _("Boot failed: no command line"
580 " signature file specified"));
581 talloc_free(boot_task);
586 image_res = add_boot_resource(boot_task, _("kernel image"), image,
587 &boot_task->local_image);
588 initrd_res = add_boot_resource(boot_task, _("initrd"), initrd,
589 &boot_task->local_initrd);
590 dtb_res = add_boot_resource(boot_task, _("dtb"), dtb,
591 &boot_task->local_dtb);
593 /* start async loads for boot resources */
594 rc = start_url_load(boot_task, image_res)
595 || start_url_load(boot_task, initrd_res)
596 || start_url_load(boot_task, dtb_res);
598 if (boot_task->verify_signature) {
599 /* Generate names of associated signature files and load */
601 image_sig = get_signature_url(ctx, image);
602 tmp = add_boot_resource(boot_task,
603 _("kernel image signature"), image_sig,
604 &boot_task->local_image_signature);
605 rc |= start_url_load(boot_task, tmp);
608 initrd_sig = get_signature_url(ctx, initrd);
609 tmp = add_boot_resource(boot_task,
610 _("initrd signature"), initrd_sig,
611 &boot_task->local_initrd_signature);
612 rc |= start_url_load(boot_task, tmp);
615 dtb_sig = get_signature_url(ctx, dtb);
616 tmp = add_boot_resource(boot_task,
617 _("dtb signature"), dtb_sig,
618 &boot_task->local_dtb_signature);
619 rc |= start_url_load(boot_task, tmp);
623 if (boot_task->verify_signature || boot_task->decrypt_files) {
624 tmp = add_boot_resource(boot_task,
625 _("kernel command line signature"), cmdline_sig,
626 &boot_task->local_cmdline_signature);
627 rc |= start_url_load(boot_task, tmp);
630 /* If all URLs are local, we may be done. */
632 /* Don't call boot_cancel() to preserve the status update */
633 boot_task->cancelled = true;
634 cleanup_cancellations(boot_task, NULL);
638 boot_process(NULL, boot_task);
643 void boot_cancel(struct boot_task *task)
645 task->cancelled = true;
647 update_status(task->status_fn, task->status_arg, STATUS_INFO,
648 _("Boot cancelled"));
650 cleanup_cancellations(task, NULL);