11 #include <sys/mount.h>
13 #include <talloc/talloc.h>
14 #include <list/list.h>
16 #include <types/types.h>
17 #include <system/system.h>
18 #include <process/process.h>
20 #include <i18n/i18n.h>
22 #include <sys/types.h>
23 #include <sys/socket.h>
25 #include <arpa/inet.h>
27 #include "device-handler.h"
28 #include "discover-server.h"
29 #include "devmapper.h"
30 #include "user-event.h"
42 enum default_priority {
43 DEFAULT_PRIORITY_REMOTE = 1,
44 DEFAULT_PRIORITY_LOCAL_FIRST = 2,
45 DEFAULT_PRIORITY_LOCAL_LAST = 0xfe,
46 DEFAULT_PRIORITY_DISABLED = 0xff,
49 struct device_handler {
50 struct discover_server *server;
54 struct network *network;
55 struct user_event *user_event;
57 struct discover_device **devices;
58 unsigned int n_devices;
60 struct ramdisk_device **ramdisks;
61 unsigned int n_ramdisks;
63 struct waitset *waitset;
64 struct waiter *timeout_waiter;
65 bool autoboot_enabled;
66 unsigned int sec_to_boot;
68 struct discover_boot_option *default_boot_option;
69 int default_boot_option_priority;
71 struct list unresolved_boot_options;
73 struct boot_task *pending_boot;
74 bool pending_boot_is_default;
77 static int mount_device(struct discover_device *dev);
78 static int umount_device(struct discover_device *dev);
80 static int device_handler_init_sources(struct device_handler *handler);
81 static void device_handler_reinit_sources(struct device_handler *handler);
83 static void device_handler_update_lang(const char *lang);
85 void discover_context_add_boot_option(struct discover_context *ctx,
86 struct discover_boot_option *boot_option)
88 boot_option->source = ctx->parser;
89 list_add_tail(&ctx->boot_options, &boot_option->list);
90 talloc_steal(ctx, boot_option);
94 * device_handler_get_device_count - Get the count of current handler devices.
97 int device_handler_get_device_count(const struct device_handler *handler)
99 return handler->n_devices;
103 * device_handler_get_device - Get a handler device by index.
106 const struct discover_device *device_handler_get_device(
107 const struct device_handler *handler, unsigned int index)
109 if (index >= handler->n_devices) {
110 assert(0 && "bad index");
114 return handler->devices[index];
117 struct discover_boot_option *discover_boot_option_create(
118 struct discover_context *ctx,
119 struct discover_device *device)
121 struct discover_boot_option *opt;
123 opt = talloc_zero(ctx, struct discover_boot_option);
124 opt->option = talloc_zero(opt, struct boot_option);
125 opt->device = device;
130 static int device_match_uuid(struct discover_device *dev, const char *uuid)
132 return dev->uuid && !strcmp(dev->uuid, uuid);
135 static int device_match_label(struct discover_device *dev, const char *label)
137 return dev->label && !strcmp(dev->label, label);
140 static int device_match_id(struct discover_device *dev, const char *id)
142 return !strcmp(dev->device->id, id);
145 static int device_match_serial(struct discover_device *dev, const char *serial)
147 const char *val = discover_device_get_param(dev, "ID_SERIAL");
148 return val && !strcmp(val, serial);
151 static struct discover_device *device_lookup(
152 struct device_handler *device_handler,
153 int (match_fn)(struct discover_device *, const char *),
156 struct discover_device *dev;
162 for (i = 0; i < device_handler->n_devices; i++) {
163 dev = device_handler->devices[i];
165 if (match_fn(dev, str))
172 struct discover_device *device_lookup_by_name(struct device_handler *handler,
175 if (!strncmp(name, "/dev/", strlen("/dev/")))
176 name += strlen("/dev/");
178 return device_lookup_by_id(handler, name);
181 struct discover_device *device_lookup_by_uuid(
182 struct device_handler *device_handler,
185 return device_lookup(device_handler, device_match_uuid, uuid);
188 struct discover_device *device_lookup_by_label(
189 struct device_handler *device_handler,
192 return device_lookup(device_handler, device_match_label, label);
195 struct discover_device *device_lookup_by_id(
196 struct device_handler *device_handler,
199 return device_lookup(device_handler, device_match_id, id);
202 struct discover_device *device_lookup_by_serial(
203 struct device_handler *device_handler,
206 return device_lookup(device_handler, device_match_serial, serial);
209 void device_handler_destroy(struct device_handler *handler)
211 talloc_free(handler);
214 static int destroy_device(void *arg)
216 struct discover_device *dev = arg;
223 struct discover_device *discover_device_create(struct device_handler *handler,
226 struct discover_device *dev;
228 dev = device_lookup_by_id(handler, id);
232 dev = talloc_zero(handler, struct discover_device);
233 dev->device = talloc_zero(dev, struct device);
234 dev->device->id = talloc_strdup(dev->device, id);
235 list_init(&dev->params);
236 list_init(&dev->boot_options);
238 talloc_set_destructor(dev, destroy_device);
243 struct discover_device_param {
246 struct list_item list;
249 void discover_device_set_param(struct discover_device *device,
250 const char *name, const char *value)
252 struct discover_device_param *param;
255 list_for_each_entry(&device->params, param, list) {
256 if (!strcmp(param->name, name)) {
265 param = talloc(device, struct discover_device_param);
266 param->name = talloc_strdup(param, name);
267 list_add(&device->params, ¶m->list);
270 list_remove(¶m->list);
274 talloc_free(param->value);
277 param->value = talloc_strdup(param, value);
280 const char *discover_device_get_param(struct discover_device *device,
283 struct discover_device_param *param;
285 list_for_each_entry(&device->params, param, list) {
286 if (!strcmp(param->name, name))
292 struct device_handler *device_handler_init(struct discover_server *server,
293 struct waitset *waitset, int dry_run)
295 struct device_handler *handler;
298 handler = talloc_zero(NULL, struct device_handler);
299 handler->server = server;
300 handler->waitset = waitset;
301 handler->dry_run = dry_run;
302 handler->autoboot_enabled = config_get()->autoboot_enabled;
304 list_init(&handler->unresolved_boot_options);
306 /* set up our mount point base */
307 pb_mkdir_recursive(mount_base());
311 if (config_get()->safe_mode)
314 rc = device_handler_init_sources(handler);
316 talloc_free(handler);
323 void device_handler_reinit(struct device_handler *handler)
325 struct discover_boot_option *opt, *tmp;
326 struct ramdisk_device *ramdisk;
329 device_handler_cancel_default(handler);
331 /* free unresolved boot options */
332 list_for_each_entry_safe(&handler->unresolved_boot_options,
335 list_init(&handler->unresolved_boot_options);
337 /* drop all devices */
338 for (i = 0; i < handler->n_devices; i++) {
339 discover_server_notify_device_remove(handler->server,
340 handler->devices[i]->device);
341 ramdisk = handler->devices[i]->ramdisk;
342 talloc_free(handler->devices[i]);
343 talloc_free(ramdisk);
346 talloc_free(handler->devices);
347 handler->devices = NULL;
348 handler->n_devices = 0;
349 talloc_free(handler->ramdisks);
350 handler->ramdisks = NULL;
351 handler->n_ramdisks = 0;
353 device_handler_reinit_sources(handler);
356 void device_handler_remove(struct device_handler *handler,
357 struct discover_device *device)
359 struct discover_boot_option *opt, *tmp;
362 for (i = 0; i < handler->n_devices; i++)
363 if (handler->devices[i] == device)
366 if (i == handler->n_devices) {
371 /* Free any unresolved options, as they're currently allocated
372 * against the handler */
373 list_for_each_entry_safe(&handler->unresolved_boot_options,
375 if (opt->device != device)
377 list_remove(&opt->list);
381 /* if this is a network device, we have to unregister it from the
383 if (device->device->type == DEVICE_TYPE_NETWORK)
384 network_unregister_device(handler->network, device);
386 handler->n_devices--;
387 memmove(&handler->devices[i], &handler->devices[i + 1],
388 (handler->n_devices - i) * sizeof(handler->devices[0]));
389 handler->devices = talloc_realloc(handler, handler->devices,
390 struct discover_device *, handler->n_devices);
392 if (device->notified)
393 discover_server_notify_device_remove(handler->server,
399 static void boot_status(void *arg, struct boot_status *status)
401 struct device_handler *handler = arg;
403 discover_server_notify_boot_status(handler->server, status);
406 static void countdown_status(struct device_handler *handler,
407 struct discover_boot_option *opt, unsigned int sec)
409 struct boot_status status;
411 status.type = BOOT_STATUS_INFO;
412 status.progress = -1;
413 status.detail = NULL;
414 status.message = talloc_asprintf(handler,
415 _("Booting in %d sec: %s"), sec, opt->option->name);
417 discover_server_notify_boot_status(handler->server, &status);
419 talloc_free(status.message);
422 static int default_timeout(void *arg)
424 struct device_handler *handler = arg;
425 struct discover_boot_option *opt;
427 if (!handler->default_boot_option)
430 if (handler->pending_boot)
433 opt = handler->default_boot_option;
435 if (handler->sec_to_boot) {
436 countdown_status(handler, opt, handler->sec_to_boot);
437 handler->sec_to_boot--;
438 handler->timeout_waiter = waiter_register_timeout(
439 handler->waitset, 1000,
440 default_timeout, handler);
444 handler->timeout_waiter = NULL;
446 pb_log("Timeout expired, booting default option %s\n", opt->option->id);
450 handler->pending_boot = boot(handler, handler->default_boot_option,
451 NULL, handler->dry_run, boot_status, handler);
452 handler->pending_boot_is_default = true;
457 enum ipmi_bootdev ipmi_type;
458 enum device_type device_type;
459 } device_type_map[] = {
460 { IPMI_BOOTDEV_NETWORK, DEVICE_TYPE_NETWORK },
461 { IPMI_BOOTDEV_DISK, DEVICE_TYPE_DISK },
462 { IPMI_BOOTDEV_DISK, DEVICE_TYPE_USB },
463 { IPMI_BOOTDEV_CDROM, DEVICE_TYPE_OPTICAL },
466 static bool ipmi_device_type_matches(enum ipmi_bootdev ipmi_type,
467 enum device_type device_type)
471 for (i = 0; i < ARRAY_SIZE(device_type_map); i++) {
472 if (device_type_map[i].device_type == device_type)
473 return device_type_map[i].ipmi_type == ipmi_type;
479 static int autoboot_option_priority(const struct config *config,
480 struct discover_boot_option *opt)
482 enum device_type type = opt->device->device->type;
483 const char *uuid = opt->device->uuid;
484 struct autoboot_option *auto_opt;
487 for (i = 0; i < config->n_autoboot_opts; i++) {
488 auto_opt = &config->autoboot_opts[i];
489 if (auto_opt->boot_type == BOOT_DEVICE_UUID)
490 if (!strcmp(auto_opt->uuid, uuid))
491 return DEFAULT_PRIORITY_LOCAL_FIRST + i;
493 if (auto_opt->boot_type == BOOT_DEVICE_TYPE)
494 if (auto_opt->type == type ||
495 auto_opt->type == DEVICE_TYPE_ANY)
496 return DEFAULT_PRIORITY_LOCAL_FIRST + i;
503 * We have different priorities to resolve conflicts between boot options that
504 * report to be the default for their device. This function assigns a priority
507 static enum default_priority default_option_priority(
508 struct discover_boot_option *opt)
510 const struct config *config;
512 config = config_get();
514 /* We give highest priority to IPMI-configured boot options. If
515 * we have an IPMI bootdev configuration set, then we don't allow
516 * any other defaults */
517 if (config->ipmi_bootdev) {
518 bool ipmi_match = ipmi_device_type_matches(config->ipmi_bootdev,
519 opt->device->device->type);
521 return DEFAULT_PRIORITY_REMOTE;
523 pb_debug("handler: disabled default priority due to "
524 "non-matching IPMI type %x\n",
525 config->ipmi_bootdev);
526 return DEFAULT_PRIORITY_DISABLED;
529 /* Next, try to match the option against the user-defined autoboot
530 * options, either by device UUID or type. */
531 if (config->n_autoboot_opts) {
532 int boot_match = autoboot_option_priority(config, opt);
537 /* If the option didn't match any entry in the array, it is disabled */
538 pb_debug("handler: disabled default priority due to "
539 "non-matching UUID or type\n");
540 return DEFAULT_PRIORITY_DISABLED;
543 static void set_default(struct device_handler *handler,
544 struct discover_boot_option *opt)
546 enum default_priority cur_prio, new_prio;
548 if (!handler->autoboot_enabled)
551 pb_debug("handler: new default option: %s\n", opt->option->id);
553 new_prio = default_option_priority(opt);
555 /* Anything outside our range prevents a default boot */
556 if (new_prio >= DEFAULT_PRIORITY_DISABLED)
559 pb_debug("handler: calculated priority %d\n", new_prio);
561 /* Resolve any conflicts: if we have a new default option, it only
562 * replaces the current if it has a higher priority. */
563 if (handler->default_boot_option) {
565 cur_prio = handler->default_boot_option_priority;
567 if (new_prio < cur_prio) {
568 pb_log("handler: new prio %d beats "
569 "old prio %d for %s\n",
571 handler->default_boot_option
573 handler->default_boot_option = opt;
574 handler->default_boot_option_priority = new_prio;
575 /* extend the timeout a little, so the user sees some
576 * indication of the change */
577 handler->sec_to_boot += 2;
583 handler->sec_to_boot = config_get()->autoboot_timeout_sec;
584 handler->default_boot_option = opt;
585 handler->default_boot_option_priority = new_prio;
587 pb_log("handler: boot option %s set as default, timeout %u sec.\n",
588 opt->option->id, handler->sec_to_boot);
590 default_timeout(handler);
593 static bool resource_is_resolved(struct resource *res)
595 return !res || res->resolved;
598 /* We only use this in an assert, which will disappear if we're compiling
599 * with NDEBUG, so we need the 'used' attribute for these builds */
600 static bool __attribute__((used)) boot_option_is_resolved(
601 struct discover_boot_option *opt)
603 return resource_is_resolved(opt->boot_image) &&
604 resource_is_resolved(opt->initrd) &&
605 resource_is_resolved(opt->dtb) &&
606 resource_is_resolved(opt->icon);
609 static bool resource_resolve(struct resource *res, const char *name,
610 struct discover_boot_option *opt,
611 struct device_handler *handler)
613 struct parser *parser = opt->source;
615 if (resource_is_resolved(res))
618 pb_debug("Attempting to resolve resource %s->%s with parser %s\n",
619 opt->option->id, name, parser->name);
620 parser->resolve_resource(handler, res);
622 return res->resolved;
625 static bool boot_option_resolve(struct discover_boot_option *opt,
626 struct device_handler *handler)
628 return resource_resolve(opt->boot_image, "boot_image", opt, handler) &&
629 resource_resolve(opt->initrd, "initrd", opt, handler) &&
630 resource_resolve(opt->dtb, "dtb", opt, handler) &&
631 resource_resolve(opt->icon, "icon", opt, handler);
634 static void boot_option_finalise(struct device_handler *handler,
635 struct discover_boot_option *opt)
637 assert(boot_option_is_resolved(opt));
639 /* check that the parsers haven't set any of the final data */
640 assert(!opt->option->boot_image_file);
641 assert(!opt->option->initrd_file);
642 assert(!opt->option->dtb_file);
643 assert(!opt->option->icon_file);
644 assert(!opt->option->device_id);
647 opt->option->boot_image_file = opt->boot_image->url->full;
649 opt->option->initrd_file = opt->initrd->url->full;
651 opt->option->dtb_file = opt->dtb->url->full;
653 opt->option->icon_file = opt->icon->url->full;
655 opt->option->device_id = opt->device->device->id;
657 if (opt->option->is_default)
658 set_default(handler, opt);
661 static void notify_boot_option(struct device_handler *handler,
662 struct discover_boot_option *opt)
664 struct discover_device *dev = opt->device;
667 discover_server_notify_device_add(handler->server,
668 opt->device->device);
669 dev->notified = true;
670 discover_server_notify_boot_option_add(handler->server, opt->option);
673 static void process_boot_option_queue(struct device_handler *handler)
675 struct discover_boot_option *opt, *tmp;
677 list_for_each_entry_safe(&handler->unresolved_boot_options,
680 pb_debug("queue: attempting resolution for %s\n",
683 if (!boot_option_resolve(opt, handler))
686 pb_debug("\tresolved!\n");
688 list_remove(&opt->list);
689 list_add_tail(&opt->device->boot_options, &opt->list);
690 talloc_steal(opt->device, opt);
691 boot_option_finalise(handler, opt);
692 notify_boot_option(handler, opt);
696 struct discover_context *device_handler_discover_context_create(
697 struct device_handler *handler,
698 struct discover_device *device)
700 struct discover_context *ctx;
702 ctx = talloc_zero(handler, struct discover_context);
703 ctx->device = device;
704 ctx->network = handler->network;
705 list_init(&ctx->boot_options);
711 * context_commit - Commit a temporary discovery context to the handler,
712 * and notify the clients about any new options / devices
714 void device_handler_discover_context_commit(struct device_handler *handler,
715 struct discover_context *ctx)
717 struct discover_device *dev = ctx->device;
718 struct discover_boot_option *opt, *tmp;
720 if (!device_lookup_by_id(handler, dev->device->id))
721 device_handler_add_device(handler, dev);
723 /* move boot options from the context to the device */
724 list_for_each_entry_safe(&ctx->boot_options, opt, tmp, list) {
725 list_remove(&opt->list);
727 if (boot_option_resolve(opt, handler)) {
728 pb_log("boot option %s is resolved, "
729 "sending to clients\n",
731 list_add_tail(&dev->boot_options, &opt->list);
732 talloc_steal(dev, opt);
733 boot_option_finalise(handler, opt);
734 notify_boot_option(handler, opt);
736 if (!opt->source->resolve_resource) {
737 pb_log("parser %s gave us an unresolved "
738 "resource (%s), but no way to "
740 opt->source->name, opt->option->id);
743 pb_log("boot option %s is unresolved, "
746 list_add(&handler->unresolved_boot_options,
748 talloc_steal(handler, opt);
754 void device_handler_add_device(struct device_handler *handler,
755 struct discover_device *device)
757 handler->n_devices++;
758 handler->devices = talloc_realloc(handler, handler->devices,
759 struct discover_device *, handler->n_devices);
760 handler->devices[handler->n_devices - 1] = device;
762 if (device->device->type == DEVICE_TYPE_NETWORK)
763 network_register_device(handler->network, device);
766 void device_handler_add_ramdisk(struct device_handler *handler,
769 struct ramdisk_device *dev;
775 for (i = 0; i < handler->n_ramdisks; i++)
776 if (!strcmp(handler->ramdisks[i]->path, path))
779 dev = talloc_zero(handler, struct ramdisk_device);
781 pb_log("Failed to allocate memory to track %s\n", path);
785 dev->path = talloc_strdup(handler, path);
787 handler->ramdisks = talloc_realloc(handler, handler->ramdisks,
788 struct ramdisk_device *,
789 handler->n_ramdisks + 1);
790 if (!handler->ramdisks) {
791 pb_log("Failed to reallocate memory"
792 "- ramdisk tracking inconsistent!\n");
796 handler->ramdisks[i] = dev;
797 i = handler->n_ramdisks++;
800 struct ramdisk_device *device_handler_get_ramdisk(
801 struct device_handler *handler)
807 /* Check if free ramdisk exists */
808 for (i = 0; i < handler->n_ramdisks; i++)
809 if (!handler->ramdisks[i]->snapshot &&
810 !handler->ramdisks[i]->origin &&
811 !handler->ramdisks[i]->base)
812 return handler->ramdisks[i];
814 /* Otherwise create a new one */
815 name = talloc_asprintf(handler, "/dev/ram%d",
816 handler->n_ramdisks);
818 pb_debug("Failed to allocate memory to name /dev/ram%d",
819 handler->n_ramdisks);
823 id = makedev(1, handler->n_ramdisks);
824 if (mknod(name, S_IFBLK, id)) {
825 if (errno == EEXIST) {
826 /* We haven't yet received updates for existing
827 * ramdisks - add and use this one */
828 pb_debug("Using untracked ramdisk %s\n", name);
830 pb_log("Failed to create new ramdisk %s: %s\n",
831 name, strerror(errno));
835 device_handler_add_ramdisk(handler, name);
838 return handler->ramdisks[i];
841 void device_handler_release_ramdisk(struct discover_device *device)
843 struct ramdisk_device *ramdisk = device->ramdisk;
845 talloc_free(ramdisk->snapshot);
846 talloc_free(ramdisk->origin);
847 talloc_free(ramdisk->base);
849 ramdisk->snapshot = ramdisk->origin = ramdisk->base = NULL;
850 ramdisk->sectors = 0;
852 device->ramdisk = NULL;
855 /* Start discovery on a hotplugged device. The device will be in our devices
856 * array, but has only just been initialised by the hotplug source.
858 int device_handler_discover(struct device_handler *handler,
859 struct discover_device *dev)
861 struct discover_context *ctx;
862 struct boot_status *status;
865 status = talloc_zero(handler, struct boot_status);
866 status->type = BOOT_STATUS_INFO;
868 * TRANSLATORS: this string will be passed the type and identifier
869 * of the device. For example, the first parameter could be "Disk",
870 * (which will be translated accordingly) and the second a Linux device
871 * identifier like 'sda1' (which will not be translated)
873 status->message = talloc_asprintf(status, _("Processing %s device %s"),
874 device_type_display_name(dev->device->type),
876 boot_status(handler, status);
878 process_boot_option_queue(handler);
880 /* create our context */
881 ctx = device_handler_discover_context_create(handler, dev);
883 rc = mount_device(dev);
887 /* add this device to our system info */
888 system_info_register_blockdev(dev->device->id, dev->uuid,
891 /* run the parsers. This will populate the ctx's boot_option list. */
892 iterate_parsers(ctx);
894 /* add discovered stuff to the handler */
895 device_handler_discover_context_commit(handler, ctx);
899 * TRANSLATORS: the format specifier in this string is a Linux
900 * device identifier, like 'sda1'
902 status->message = talloc_asprintf(status,_("Processing %s complete"),
904 boot_status(handler, status);
912 /* Incoming dhcp event */
913 int device_handler_dhcp(struct device_handler *handler,
914 struct discover_device *dev, struct event *event)
916 struct discover_context *ctx;
917 struct boot_status *status;
919 status = talloc_zero(handler, struct boot_status);
920 status->type = BOOT_STATUS_INFO;
922 * TRANSLATORS: this format specifier will be the name of a network
923 * device, like 'eth0'.
925 status->message = talloc_asprintf(status, _("Processing dhcp event on %s"),
927 boot_status(handler, status);
929 /* create our context */
930 ctx = device_handler_discover_context_create(handler, dev);
933 iterate_parsers(ctx);
935 device_handler_discover_context_commit(handler, ctx);
938 * TRANSLATORS: this format specifier will be the name of a network
939 * device, like 'eth0'.
941 status->message = talloc_asprintf(status,_("Processing %s complete"),
943 boot_status(handler, status);
951 /* incoming conf event */
952 int device_handler_conf(struct device_handler *handler,
953 struct discover_device *dev, struct pb_url *url)
955 struct discover_context *ctx;
956 struct boot_status *status;
958 status = talloc_zero(handler, struct boot_status);
959 status->type = BOOT_STATUS_INFO;
960 status->message = talloc_asprintf(status, _("Processing user config"));
961 boot_status(handler, status);
963 /* create our context */
964 ctx = device_handler_discover_context_create(handler, dev);
967 iterate_parsers(ctx);
969 device_handler_discover_context_commit(handler, ctx);
971 status->message = talloc_asprintf(status,
972 _("Processing user config complete"));
973 boot_status(handler, status);
981 static struct discover_boot_option *find_boot_option_by_id(
982 struct device_handler *handler, const char *id)
986 for (i = 0; i < handler->n_devices; i++) {
987 struct discover_device *dev = handler->devices[i];
988 struct discover_boot_option *opt;
990 list_for_each_entry(&dev->boot_options, opt, list)
991 if (!strcmp(opt->option->id, id))
998 void device_handler_boot(struct device_handler *handler,
999 struct boot_command *cmd)
1001 struct discover_boot_option *opt = NULL;
1003 if (cmd->option_id && strlen(cmd->option_id))
1004 opt = find_boot_option_by_id(handler, cmd->option_id);
1006 if (handler->pending_boot)
1007 boot_cancel(handler->pending_boot);
1009 platform_pre_boot();
1011 handler->pending_boot = boot(handler, opt, cmd, handler->dry_run,
1012 boot_status, handler);
1013 handler->pending_boot_is_default = false;
1016 void device_handler_cancel_default(struct device_handler *handler)
1018 struct boot_status status;
1020 if (handler->timeout_waiter)
1021 waiter_remove(handler->timeout_waiter);
1023 handler->timeout_waiter = NULL;
1024 handler->autoboot_enabled = false;
1026 /* we only send status if we had a default boot option queued */
1027 if (!handler->default_boot_option)
1030 pb_log("Cancelling default boot option\n");
1032 if (handler->pending_boot && handler->pending_boot_is_default) {
1033 boot_cancel(handler->pending_boot);
1034 handler->pending_boot = NULL;
1035 handler->pending_boot_is_default = false;
1038 handler->default_boot_option = NULL;
1040 status.type = BOOT_STATUS_INFO;
1041 status.progress = -1;
1042 status.detail = NULL;
1043 status.message = _("Default boot cancelled");
1045 discover_server_notify_boot_status(handler->server, &status);
1048 void device_handler_update_config(struct device_handler *handler,
1049 struct config *config)
1053 rc = config_set(config);
1057 discover_server_notify_config(handler->server, config);
1058 device_handler_update_lang(config->lang);
1059 device_handler_reinit(handler);
1062 static char *device_from_addr(void *ctx, struct pb_url *url)
1064 char *ipaddr, *buf, *tok, *dev = NULL;
1065 const char *delim = " ";
1066 struct sockaddr_in *ip;
1067 struct sockaddr_in si;
1068 struct addrinfo *res;
1072 /* Note: IPv4 only */
1073 rc = inet_pton(AF_INET, url->host, &(si.sin_addr));
1077 /* need to turn hostname into a valid IP */
1078 rc = getaddrinfo(url->host, NULL, NULL, &res);
1080 pb_debug("%s: Invalid URL\n",__func__);
1083 ipaddr = talloc_array(ctx,char,INET_ADDRSTRLEN);
1084 ip = (struct sockaddr_in *) res->ai_addr;
1085 inet_ntop(AF_INET, &(ip->sin_addr), ipaddr, INET_ADDRSTRLEN);
1089 const char *argv[] = {
1091 "route", "show", "to", "match",
1096 p = process_create(ctx);
1098 p->path = pb_system_apps.ip;
1100 p->keep_stdout = true;
1102 rc = process_run_sync(p);
1104 if (rc || p->exit_status) {
1105 /* ip has complained for some reason; most likely
1106 * there is no route to the host - bail out */
1107 pb_debug("%s: `ip` returns non-zero exit status\n", __func__);
1108 pb_debug("ip buf: %s\n", p->stdout_buf);
1113 buf = p->stdout_buf;
1114 /* If a route is found, ip-route output will be of the form
1115 * "... dev DEVNAME ... " */
1116 tok = strtok(buf, delim);
1118 if (!strcmp(tok, "dev")) {
1119 tok = strtok(NULL, delim);
1120 dev = talloc_strdup(ctx, tok);
1123 tok = strtok(NULL, delim);
1128 pb_debug("%s: Found interface '%s'\n", __func__,dev);
1132 void device_handler_process_url(struct device_handler *handler,
1133 const char *url, const char *mac, const char *ip)
1135 struct discover_context *ctx;
1136 struct discover_device *dev;
1137 struct boot_status *status;
1138 struct pb_url *pb_url;
1139 struct event *event;
1140 struct param *param;
1142 status = talloc(handler, struct boot_status);
1144 status->type = BOOT_STATUS_ERROR;
1145 status->progress = 0;
1146 status->detail = talloc_asprintf(status,
1147 _("Received config URL %s"), url);
1149 if (!handler->network) {
1150 status->message = talloc_asprintf(handler,
1151 _("No network configured"));
1155 event = talloc(handler, struct event);
1156 event->type = EVENT_TYPE_USER;
1157 event->action = EVENT_ACTION_CONF;
1159 if (url[strlen(url) - 1] == '/') {
1160 event->params = talloc_array(event, struct param, 3);
1161 param = &event->params[0];
1162 param->name = talloc_strdup(event, "pxepathprefix");
1163 param->value = talloc_strdup(event, url);
1164 param = &event->params[1];
1165 param->name = talloc_strdup(event, "mac");
1166 param->value = talloc_strdup(event, mac);
1167 param = &event->params[2];
1168 param->name = talloc_strdup(event, "ip");
1169 param->value = talloc_strdup(event, ip);
1170 event->n_params = 3;
1172 event->params = talloc_array(event, struct param, 1);
1173 param = &event->params[0];
1174 param->name = talloc_strdup(event, "pxeconffile");
1175 param->value = talloc_strdup(event, url);
1176 event->n_params = 1;
1179 pb_url = pb_url_parse(event, event->params->value);
1180 if (!pb_url || !pb_url->host) {
1181 status->message = talloc_asprintf(handler,
1182 _("Invalid config URL!"));
1186 event->device = device_from_addr(event, pb_url);
1187 if (!event->device) {
1188 status->message = talloc_asprintf(status,
1189 _("Unable to route to host %s"),
1194 dev = discover_device_create(handler, event->device);
1195 ctx = device_handler_discover_context_create(handler, dev);
1198 iterate_parsers(ctx);
1200 device_handler_discover_context_commit(handler, ctx);
1204 status->type = BOOT_STATUS_INFO;
1205 status->message = talloc_asprintf(status, _("Config file %s parsed"),
1208 boot_status(handler, status);
1209 talloc_free(status);
1212 #ifndef PETITBOOT_TEST
1214 static void device_handler_update_lang(const char *lang)
1216 const char *cur_lang;
1221 cur_lang = setlocale(LC_ALL, NULL);
1222 if (cur_lang && !strcmp(cur_lang, lang))
1225 setlocale(LC_ALL, lang);
1228 static int device_handler_init_sources(struct device_handler *handler)
1230 /* init our device sources: udev, network and user events */
1231 handler->udev = udev_init(handler, handler->waitset);
1235 handler->network = network_init(handler, handler->waitset,
1237 if (!handler->network)
1240 handler->user_event = user_event_init(handler, handler->waitset);
1241 if (!handler->user_event)
1247 static void device_handler_reinit_sources(struct device_handler *handler)
1249 /* if we haven't initialised sources previously (becuase we started in
1250 * safe mode), then init once here. */
1251 if (!(handler->udev || handler->network || handler->user_event)) {
1252 device_handler_init_sources(handler);
1256 udev_reinit(handler->udev);
1258 network_shutdown(handler->network);
1259 handler->network = network_init(handler, handler->waitset,
1263 static inline const char *get_device_path(struct discover_device *dev)
1265 return dev->ramdisk ? dev->ramdisk->snapshot : dev->device_path;
1268 static char *check_subvols(struct discover_device *dev)
1270 const char *fstype = discover_device_get_param(dev, "ID_FS_TYPE");
1275 if (strncmp(fstype, "btrfs", strlen("btrfs")))
1276 return dev->mount_path;
1278 /* On btrfs a device's root may be under a subvolume path */
1279 path = join_paths(dev, dev->mount_path, "@");
1280 rc = stat(path, &sb);
1281 if (!rc && S_ISDIR(sb.st_mode)) {
1282 pb_debug("Using '%s' for btrfs root path\n", path);
1287 return dev->mount_path;
1290 static bool check_existing_mount(struct discover_device *dev)
1292 struct stat devstat, mntstat;
1293 const char *device_path;
1298 device_path = get_device_path(dev);
1300 rc = stat(device_path, &devstat);
1302 pb_debug("%s: stat failed: %s\n", __func__, strerror(errno));
1306 if (!S_ISBLK(devstat.st_mode)) {
1307 pb_debug("%s: %s isn't a block device?\n", __func__,
1312 fp = fopen("/proc/self/mounts", "r");
1315 mnt = getmntent(fp);
1319 if (!mnt->mnt_fsname || mnt->mnt_fsname[0] != '/')
1322 rc = stat(mnt->mnt_fsname, &mntstat);
1326 if (!S_ISBLK(mntstat.st_mode))
1329 if (mntstat.st_rdev == devstat.st_rdev) {
1330 dev->mount_path = talloc_strdup(dev, mnt->mnt_dir);
1331 dev->root_path = check_subvols(dev);
1332 dev->mounted_rw = !!hasmntopt(mnt, "rw");
1333 dev->mounted = true;
1334 dev->unmount = false;
1336 pb_debug("%s: %s is already mounted (r%c) at %s\n",
1337 __func__, dev->device_path,
1338 dev->mounted_rw ? 'w' : 'o',
1350 * Attempt to mount a filesystem safely, while handling certain filesytem-
1353 static int try_mount(const char *device_path, const char *mount_path,
1354 const char *fstype, unsigned long flags,
1357 const char *fs, *safe_opts;
1360 /* Mount ext3 as ext4 instead so 'norecovery' can be used */
1361 if (strncmp(fstype, "ext3", strlen("ext3")) == 0) {
1362 pb_debug("Mounting ext3 filesystem as ext4\n");
1367 if (strncmp(fs, "xfs", strlen("xfs")) == 0 ||
1368 strncmp(fs, "ext4", strlen("ext4")) == 0)
1369 safe_opts = "norecovery";
1374 /* If no snapshot is available don't attempt recovery */
1376 return mount(device_path, mount_path, fs, flags, safe_opts);
1378 rc = mount(device_path, mount_path, fs, flags, NULL);
1383 /* Mounting failed; some filesystems will fail to mount if a recovery
1384 * journal exists (eg. cross-endian XFS), so try again with norecovery
1385 * where that option is available.
1386 * If mounting read-write just return the error as norecovery is not a
1388 if ((flags & MS_RDONLY) != MS_RDONLY || !safe_opts)
1392 return mount(device_path, mount_path, fs, flags, safe_opts);
1395 static int mount_device(struct discover_device *dev)
1397 const char *fstype, *device_path;
1400 if (!dev->device_path)
1406 if (check_existing_mount(dev))
1409 fstype = discover_device_get_param(dev, "ID_FS_TYPE");
1413 dev->mount_path = join_paths(dev, mount_base(),
1416 if (pb_mkdir_recursive(dev->mount_path)) {
1417 pb_log("couldn't create mount directory %s: %s\n",
1418 dev->mount_path, strerror(errno));
1422 device_path = get_device_path(dev);
1424 pb_log("mounting device %s read-only\n", dev->device_path);
1425 rc = try_mount(device_path, dev->mount_path, fstype,
1426 MS_RDONLY | MS_SILENT, dev->ramdisk);
1429 dev->mounted = true;
1430 dev->mounted_rw = false;
1431 dev->unmount = true;
1432 dev->root_path = check_subvols(dev);
1436 pb_log("couldn't mount device %s: mount failed: %s\n",
1437 device_path, strerror(errno));
1439 /* If mount fails clean up any snapshot */
1440 devmapper_destroy_snapshot(dev);
1442 pb_rmdir_recursive(mount_base(), dev->mount_path);
1444 talloc_free(dev->mount_path);
1445 dev->mount_path = NULL;
1449 static int umount_device(struct discover_device *dev)
1451 const char *device_path;
1454 if (!dev->mounted || !dev->unmount)
1457 device_path = get_device_path(dev);
1459 pb_log("unmounting device %s\n", device_path);
1460 rc = umount(dev->mount_path);
1464 dev->mounted = false;
1465 devmapper_destroy_snapshot(dev);
1467 pb_rmdir_recursive(mount_base(), dev->mount_path);
1469 talloc_free(dev->mount_path);
1470 dev->mount_path = NULL;
1471 dev->root_path = NULL;
1476 int device_request_write(struct discover_device *dev, bool *release)
1478 const char *fstype, *device_path;
1479 const struct config *config;
1484 config = config_get();
1485 if (!config->allow_writes)
1491 if (dev->mounted_rw)
1494 fstype = discover_device_get_param(dev, "ID_FS_TYPE");
1496 device_path = get_device_path(dev);
1498 pb_log("remounting device %s read-write\n", device_path);
1500 rc = umount(dev->mount_path);
1502 pb_log("Failed to unmount %s: %s\n",
1503 dev->mount_path, strerror(errno));
1507 rc = try_mount(device_path, dev->mount_path, fstype,
1508 MS_SILENT, dev->ramdisk);
1512 dev->mounted_rw = true;
1517 pb_log("Unable to remount device %s read-write: %s\n",
1518 device_path, strerror(errno));
1519 rc = try_mount(device_path, dev->mount_path, fstype,
1520 MS_RDONLY | MS_SILENT, dev->ramdisk);
1522 pb_log("Unable to recover mount for %s: %s\n",
1523 device_path, strerror(errno));
1527 void device_release_write(struct discover_device *dev, bool release)
1529 const char *fstype, *device_path;
1534 device_path = get_device_path(dev);
1536 fstype = discover_device_get_param(dev, "ID_FS_TYPE");
1538 pb_log("remounting device %s read-only\n", device_path);
1540 if (umount(dev->mount_path)) {
1541 pb_log("Failed to unmount %s\n", dev->mount_path);
1544 dev->mounted_rw = dev->mounted = false;
1547 devmapper_merge_snapshot(dev);
1548 /* device_path becomes stale after merge */
1549 device_path = get_device_path(dev);
1552 if (try_mount(device_path, dev->mount_path, fstype,
1553 MS_RDONLY | MS_SILENT, dev->ramdisk))
1554 pb_log("Failed to remount %s read-only: %s\n",
1555 device_path, strerror(errno));
1557 dev->mounted = true;
1562 static void device_handler_update_lang(const char *lang __attribute__((unused)))
1566 static int device_handler_init_sources(
1567 struct device_handler *handler __attribute__((unused)))
1572 static void device_handler_reinit_sources(
1573 struct device_handler *handler __attribute__((unused)))
1577 static int umount_device(struct discover_device *dev __attribute__((unused)))
1582 static int __attribute__((unused)) mount_device(
1583 struct discover_device *dev __attribute__((unused)))
1588 int device_request_write(struct discover_device *dev __attribute__((unused)),
1595 void device_release_write(struct discover_device *dev __attribute__((unused)),
1596 bool release __attribute__((unused)))