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);
448 handler->pending_boot = boot(handler, handler->default_boot_option,
449 NULL, handler->dry_run, boot_status, handler);
450 handler->pending_boot_is_default = true;
455 enum ipmi_bootdev ipmi_type;
456 enum device_type device_type;
457 } device_type_map[] = {
458 { IPMI_BOOTDEV_NETWORK, DEVICE_TYPE_NETWORK },
459 { IPMI_BOOTDEV_DISK, DEVICE_TYPE_DISK },
460 { IPMI_BOOTDEV_DISK, DEVICE_TYPE_USB },
461 { IPMI_BOOTDEV_CDROM, DEVICE_TYPE_OPTICAL },
464 static bool ipmi_device_type_matches(enum ipmi_bootdev ipmi_type,
465 enum device_type device_type)
469 for (i = 0; i < ARRAY_SIZE(device_type_map); i++) {
470 if (device_type_map[i].device_type == device_type)
471 return device_type_map[i].ipmi_type == ipmi_type;
477 static int autoboot_option_priority(const struct config *config,
478 struct discover_boot_option *opt)
480 enum device_type type = opt->device->device->type;
481 const char *uuid = opt->device->uuid;
482 struct autoboot_option *auto_opt;
485 for (i = 0; i < config->n_autoboot_opts; i++) {
486 auto_opt = &config->autoboot_opts[i];
487 if (auto_opt->boot_type == BOOT_DEVICE_UUID)
488 if (!strcmp(auto_opt->uuid, uuid))
489 return DEFAULT_PRIORITY_LOCAL_FIRST + i;
491 if (auto_opt->boot_type == BOOT_DEVICE_TYPE)
492 if (auto_opt->type == type ||
493 auto_opt->type == DEVICE_TYPE_ANY)
494 return DEFAULT_PRIORITY_LOCAL_FIRST + i;
501 * We have different priorities to resolve conflicts between boot options that
502 * report to be the default for their device. This function assigns a priority
505 static enum default_priority default_option_priority(
506 struct discover_boot_option *opt)
508 const struct config *config;
510 config = config_get();
512 /* We give highest priority to IPMI-configured boot options. If
513 * we have an IPMI bootdev configuration set, then we don't allow
514 * any other defaults */
515 if (config->ipmi_bootdev) {
516 bool ipmi_match = ipmi_device_type_matches(config->ipmi_bootdev,
517 opt->device->device->type);
519 return DEFAULT_PRIORITY_REMOTE;
521 pb_debug("handler: disabled default priority due to "
522 "non-matching IPMI type %x\n",
523 config->ipmi_bootdev);
524 return DEFAULT_PRIORITY_DISABLED;
527 /* Next, try to match the option against the user-defined autoboot
528 * options, either by device UUID or type. */
529 if (config->n_autoboot_opts) {
530 int boot_match = autoboot_option_priority(config, opt);
535 /* If the option didn't match any entry in the array, it is disabled */
536 pb_debug("handler: disabled default priority due to "
537 "non-matching UUID or type\n");
538 return DEFAULT_PRIORITY_DISABLED;
541 static void set_default(struct device_handler *handler,
542 struct discover_boot_option *opt)
544 enum default_priority cur_prio, new_prio;
546 if (!handler->autoboot_enabled)
549 pb_debug("handler: new default option: %s\n", opt->option->id);
551 new_prio = default_option_priority(opt);
553 /* Anything outside our range prevents a default boot */
554 if (new_prio >= DEFAULT_PRIORITY_DISABLED)
557 pb_debug("handler: calculated priority %d\n", new_prio);
559 /* Resolve any conflicts: if we have a new default option, it only
560 * replaces the current if it has a higher priority. */
561 if (handler->default_boot_option) {
563 cur_prio = handler->default_boot_option_priority;
565 if (new_prio < cur_prio) {
566 pb_log("handler: new prio %d beats "
567 "old prio %d for %s\n",
569 handler->default_boot_option
571 handler->default_boot_option = opt;
572 handler->default_boot_option_priority = new_prio;
573 /* extend the timeout a little, so the user sees some
574 * indication of the change */
575 handler->sec_to_boot += 2;
581 handler->sec_to_boot = config_get()->autoboot_timeout_sec;
582 handler->default_boot_option = opt;
583 handler->default_boot_option_priority = new_prio;
585 pb_log("handler: boot option %s set as default, timeout %u sec.\n",
586 opt->option->id, handler->sec_to_boot);
588 default_timeout(handler);
591 static bool resource_is_resolved(struct resource *res)
593 return !res || res->resolved;
596 /* We only use this in an assert, which will disappear if we're compiling
597 * with NDEBUG, so we need the 'used' attribute for these builds */
598 static bool __attribute__((used)) boot_option_is_resolved(
599 struct discover_boot_option *opt)
601 return resource_is_resolved(opt->boot_image) &&
602 resource_is_resolved(opt->initrd) &&
603 resource_is_resolved(opt->dtb) &&
604 resource_is_resolved(opt->icon);
607 static bool resource_resolve(struct resource *res, const char *name,
608 struct discover_boot_option *opt,
609 struct device_handler *handler)
611 struct parser *parser = opt->source;
613 if (resource_is_resolved(res))
616 pb_debug("Attempting to resolve resource %s->%s with parser %s\n",
617 opt->option->id, name, parser->name);
618 parser->resolve_resource(handler, res);
620 return res->resolved;
623 static bool boot_option_resolve(struct discover_boot_option *opt,
624 struct device_handler *handler)
626 return resource_resolve(opt->boot_image, "boot_image", opt, handler) &&
627 resource_resolve(opt->initrd, "initrd", opt, handler) &&
628 resource_resolve(opt->dtb, "dtb", opt, handler) &&
629 resource_resolve(opt->icon, "icon", opt, handler);
632 static void boot_option_finalise(struct device_handler *handler,
633 struct discover_boot_option *opt)
635 assert(boot_option_is_resolved(opt));
637 /* check that the parsers haven't set any of the final data */
638 assert(!opt->option->boot_image_file);
639 assert(!opt->option->initrd_file);
640 assert(!opt->option->dtb_file);
641 assert(!opt->option->icon_file);
642 assert(!opt->option->device_id);
645 opt->option->boot_image_file = opt->boot_image->url->full;
647 opt->option->initrd_file = opt->initrd->url->full;
649 opt->option->dtb_file = opt->dtb->url->full;
651 opt->option->icon_file = opt->icon->url->full;
653 opt->option->device_id = opt->device->device->id;
655 if (opt->option->is_default)
656 set_default(handler, opt);
659 static void notify_boot_option(struct device_handler *handler,
660 struct discover_boot_option *opt)
662 struct discover_device *dev = opt->device;
665 discover_server_notify_device_add(handler->server,
666 opt->device->device);
667 dev->notified = true;
668 discover_server_notify_boot_option_add(handler->server, opt->option);
671 static void process_boot_option_queue(struct device_handler *handler)
673 struct discover_boot_option *opt, *tmp;
675 list_for_each_entry_safe(&handler->unresolved_boot_options,
678 pb_debug("queue: attempting resolution for %s\n",
681 if (!boot_option_resolve(opt, handler))
684 pb_debug("\tresolved!\n");
686 list_remove(&opt->list);
687 list_add_tail(&opt->device->boot_options, &opt->list);
688 talloc_steal(opt->device, opt);
689 boot_option_finalise(handler, opt);
690 notify_boot_option(handler, opt);
694 struct discover_context *device_handler_discover_context_create(
695 struct device_handler *handler,
696 struct discover_device *device)
698 struct discover_context *ctx;
700 ctx = talloc_zero(handler, struct discover_context);
701 ctx->device = device;
702 ctx->network = handler->network;
703 list_init(&ctx->boot_options);
709 * context_commit - Commit a temporary discovery context to the handler,
710 * and notify the clients about any new options / devices
712 void device_handler_discover_context_commit(struct device_handler *handler,
713 struct discover_context *ctx)
715 struct discover_device *dev = ctx->device;
716 struct discover_boot_option *opt, *tmp;
718 if (!device_lookup_by_id(handler, dev->device->id))
719 device_handler_add_device(handler, dev);
721 /* move boot options from the context to the device */
722 list_for_each_entry_safe(&ctx->boot_options, opt, tmp, list) {
723 list_remove(&opt->list);
725 if (boot_option_resolve(opt, handler)) {
726 pb_log("boot option %s is resolved, "
727 "sending to clients\n",
729 list_add_tail(&dev->boot_options, &opt->list);
730 talloc_steal(dev, opt);
731 boot_option_finalise(handler, opt);
732 notify_boot_option(handler, opt);
734 if (!opt->source->resolve_resource) {
735 pb_log("parser %s gave us an unresolved "
736 "resource (%s), but no way to "
738 opt->source->name, opt->option->id);
741 pb_log("boot option %s is unresolved, "
744 list_add(&handler->unresolved_boot_options,
746 talloc_steal(handler, opt);
752 void device_handler_add_device(struct device_handler *handler,
753 struct discover_device *device)
755 handler->n_devices++;
756 handler->devices = talloc_realloc(handler, handler->devices,
757 struct discover_device *, handler->n_devices);
758 handler->devices[handler->n_devices - 1] = device;
760 if (device->device->type == DEVICE_TYPE_NETWORK)
761 network_register_device(handler->network, device);
764 void device_handler_add_ramdisk(struct device_handler *handler,
767 struct ramdisk_device *dev;
773 for (i = 0; i < handler->n_ramdisks; i++)
774 if (!strcmp(handler->ramdisks[i]->path, path))
777 dev = talloc_zero(handler, struct ramdisk_device);
779 pb_log("Failed to allocate memory to track %s\n", path);
783 dev->path = talloc_strdup(handler, path);
785 handler->ramdisks = talloc_realloc(handler, handler->ramdisks,
786 struct ramdisk_device *,
787 handler->n_ramdisks + 1);
788 if (!handler->ramdisks) {
789 pb_log("Failed to reallocate memory"
790 "- ramdisk tracking inconsistent!\n");
794 handler->ramdisks[i] = dev;
795 i = handler->n_ramdisks++;
798 struct ramdisk_device *device_handler_get_ramdisk(
799 struct device_handler *handler)
805 /* Check if free ramdisk exists */
806 for (i = 0; i < handler->n_ramdisks; i++)
807 if (!handler->ramdisks[i]->snapshot &&
808 !handler->ramdisks[i]->origin &&
809 !handler->ramdisks[i]->base)
810 return handler->ramdisks[i];
812 /* Otherwise create a new one */
813 name = talloc_asprintf(handler, "/dev/ram%d",
814 handler->n_ramdisks);
816 pb_debug("Failed to allocate memory to name /dev/ram%d",
817 handler->n_ramdisks);
821 id = makedev(1, handler->n_ramdisks);
822 if (mknod(name, S_IFBLK, id)) {
823 if (errno == EEXIST) {
824 /* We haven't yet received updates for existing
825 * ramdisks - add and use this one */
826 pb_debug("Using untracked ramdisk %s\n", name);
828 pb_log("Failed to create new ramdisk %s: %s\n",
829 name, strerror(errno));
833 device_handler_add_ramdisk(handler, name);
836 return handler->ramdisks[i];
839 void device_handler_release_ramdisk(struct discover_device *device)
841 struct ramdisk_device *ramdisk = device->ramdisk;
843 talloc_free(ramdisk->snapshot);
844 talloc_free(ramdisk->origin);
845 talloc_free(ramdisk->base);
847 ramdisk->snapshot = ramdisk->origin = ramdisk->base = NULL;
848 ramdisk->sectors = 0;
850 device->ramdisk = NULL;
853 /* Start discovery on a hotplugged device. The device will be in our devices
854 * array, but has only just been initialised by the hotplug source.
856 int device_handler_discover(struct device_handler *handler,
857 struct discover_device *dev)
859 struct discover_context *ctx;
860 struct boot_status *status;
863 status = talloc_zero(handler, struct boot_status);
864 status->type = BOOT_STATUS_INFO;
866 * TRANSLATORS: this string will be passed the type and identifier
867 * of the device. For example, the first parameter could be "Disk",
868 * (which will be translated accordingly) and the second a Linux device
869 * identifier like 'sda1' (which will not be translated)
871 status->message = talloc_asprintf(status, _("Processing %s device %s"),
872 device_type_display_name(dev->device->type),
874 boot_status(handler, status);
876 process_boot_option_queue(handler);
878 /* create our context */
879 ctx = device_handler_discover_context_create(handler, dev);
881 rc = mount_device(dev);
885 /* add this device to our system info */
886 system_info_register_blockdev(dev->device->id, dev->uuid,
889 /* run the parsers. This will populate the ctx's boot_option list. */
890 iterate_parsers(ctx);
892 /* add discovered stuff to the handler */
893 device_handler_discover_context_commit(handler, ctx);
897 * TRANSLATORS: the format specifier in this string is a Linux
898 * device identifier, like 'sda1'
900 status->message = talloc_asprintf(status,_("Processing %s complete\n"),
902 boot_status(handler, status);
910 /* Incoming dhcp event */
911 int device_handler_dhcp(struct device_handler *handler,
912 struct discover_device *dev, struct event *event)
914 struct discover_context *ctx;
915 struct boot_status *status;
917 status = talloc_zero(handler, struct boot_status);
918 status->type = BOOT_STATUS_INFO;
920 * TRANSLATORS: this format specifier will be the name of a network
921 * device, like 'eth0'.
923 status->message = talloc_asprintf(status, _("Processing dhcp event on %s"),
925 boot_status(handler, status);
927 /* create our context */
928 ctx = device_handler_discover_context_create(handler, dev);
931 iterate_parsers(ctx);
933 device_handler_discover_context_commit(handler, ctx);
936 * TRANSLATORS: this format specifier will be the name of a network
937 * device, like 'eth0'.
939 status->message = talloc_asprintf(status,_("Processing %s complete\n"),
941 boot_status(handler, status);
949 /* incoming conf event */
950 int device_handler_conf(struct device_handler *handler,
951 struct discover_device *dev, struct pb_url *url)
953 struct discover_context *ctx;
954 struct boot_status *status;
956 status = talloc_zero(handler, struct boot_status);
957 status->type = BOOT_STATUS_INFO;
958 status->message = talloc_asprintf(status, _("Processing user config"));
959 boot_status(handler, status);
961 /* create our context */
962 ctx = device_handler_discover_context_create(handler, dev);
965 iterate_parsers(ctx);
967 device_handler_discover_context_commit(handler, ctx);
969 status->message = talloc_asprintf(status,
970 _("Processing user config complete"));
971 boot_status(handler, status);
979 static struct discover_boot_option *find_boot_option_by_id(
980 struct device_handler *handler, const char *id)
984 for (i = 0; i < handler->n_devices; i++) {
985 struct discover_device *dev = handler->devices[i];
986 struct discover_boot_option *opt;
988 list_for_each_entry(&dev->boot_options, opt, list)
989 if (!strcmp(opt->option->id, id))
996 void device_handler_boot(struct device_handler *handler,
997 struct boot_command *cmd)
999 struct discover_boot_option *opt = NULL;
1001 if (cmd->option_id && strlen(cmd->option_id))
1002 opt = find_boot_option_by_id(handler, cmd->option_id);
1004 if (handler->pending_boot)
1005 boot_cancel(handler->pending_boot);
1007 platform_pre_boot();
1009 handler->pending_boot = boot(handler, opt, cmd, handler->dry_run,
1010 boot_status, handler);
1011 handler->pending_boot_is_default = false;
1014 void device_handler_cancel_default(struct device_handler *handler)
1016 struct boot_status status;
1018 if (handler->timeout_waiter)
1019 waiter_remove(handler->timeout_waiter);
1021 handler->timeout_waiter = NULL;
1022 handler->autoboot_enabled = false;
1024 /* we only send status if we had a default boot option queued */
1025 if (!handler->default_boot_option)
1028 pb_log("Cancelling default boot option\n");
1030 if (handler->pending_boot && handler->pending_boot_is_default) {
1031 boot_cancel(handler->pending_boot);
1032 handler->pending_boot = NULL;
1033 handler->pending_boot_is_default = false;
1036 handler->default_boot_option = NULL;
1038 status.type = BOOT_STATUS_INFO;
1039 status.progress = -1;
1040 status.detail = NULL;
1041 status.message = _("Default boot cancelled");
1043 discover_server_notify_boot_status(handler->server, &status);
1046 void device_handler_update_config(struct device_handler *handler,
1047 struct config *config)
1051 rc = config_set(config);
1055 discover_server_notify_config(handler->server, config);
1056 device_handler_update_lang(config->lang);
1057 device_handler_reinit(handler);
1060 static char *device_from_addr(void *ctx, struct pb_url *url)
1062 char *ipaddr, *buf, *tok, *dev = NULL;
1063 const char *delim = " ";
1064 struct sockaddr_in *ip;
1065 struct sockaddr_in si;
1066 struct addrinfo *res;
1070 /* Note: IPv4 only */
1071 rc = inet_pton(AF_INET, url->host, &(si.sin_addr));
1075 /* need to turn hostname into a valid IP */
1076 rc = getaddrinfo(url->host, NULL, NULL, &res);
1078 pb_debug("%s: Invalid URL\n",__func__);
1081 ipaddr = talloc_array(ctx,char,INET_ADDRSTRLEN);
1082 ip = (struct sockaddr_in *) res->ai_addr;
1083 inet_ntop(AF_INET, &(ip->sin_addr), ipaddr, INET_ADDRSTRLEN);
1087 const char *argv[] = {
1089 "route", "show", "to", "match",
1094 p = process_create(ctx);
1096 p->path = pb_system_apps.ip;
1098 p->keep_stdout = true;
1100 rc = process_run_sync(p);
1103 /* ip has complained for some reason; most likely
1104 * there is no route to the host - bail out */
1105 pb_debug("%s: No route to %s\n",__func__,url->host);
1109 buf = p->stdout_buf;
1110 /* If a route is found, ip-route output will be of the form
1111 * "... dev DEVNAME ... " */
1112 tok = strtok(buf, delim);
1114 if (!strcmp(tok, "dev")) {
1115 tok = strtok(NULL, delim);
1116 dev = talloc_strdup(ctx, tok);
1119 tok = strtok(NULL, delim);
1124 pb_debug("%s: Found interface '%s'\n", __func__,dev);
1129 void device_handler_process_url(struct device_handler *handler,
1132 struct discover_context *ctx;
1133 struct discover_device *dev;
1134 struct boot_status *status;
1135 struct pb_url *pb_url;
1136 struct event *event;
1137 struct param *param;
1139 status = talloc(handler, struct boot_status);
1141 status->type = BOOT_STATUS_ERROR;
1142 status->progress = 0;
1143 status->detail = talloc_asprintf(status,
1144 _("Received config URL %s"), url);
1146 if (!handler->network) {
1147 status->message = talloc_asprintf(handler,
1148 _("No network configured"));
1152 event = talloc(handler, struct event);
1153 event->type = EVENT_TYPE_USER;
1154 event->action = EVENT_ACTION_CONF;
1156 event->params = talloc_array(event, struct param, 1);
1157 param = &event->params[0];
1158 param->name = talloc_strdup(event, "pxeconffile");
1159 param->value = talloc_strdup(event, url);
1160 event->n_params = 1;
1162 pb_url = pb_url_parse(event, event->params->value);
1163 if (!pb_url || !pb_url->host) {
1164 status->message = talloc_asprintf(handler,
1165 _("Invalid config URL!"));
1169 event->device = device_from_addr(event, pb_url);
1170 if (!event->device) {
1171 status->message = talloc_asprintf(status,
1172 _("Unable to route to host %s"),
1177 dev = discover_device_create(handler, event->device);
1178 ctx = device_handler_discover_context_create(handler, dev);
1181 iterate_parsers(ctx);
1183 device_handler_discover_context_commit(handler, ctx);
1187 status->type = BOOT_STATUS_INFO;
1188 status->message = talloc_asprintf(status, _("Config file %s parsed"),
1191 boot_status(handler, status);
1192 talloc_free(status);
1195 #ifndef PETITBOOT_TEST
1197 static void device_handler_update_lang(const char *lang)
1199 const char *cur_lang;
1204 cur_lang = setlocale(LC_ALL, NULL);
1205 if (cur_lang && !strcmp(cur_lang, lang))
1208 setlocale(LC_ALL, lang);
1211 static int device_handler_init_sources(struct device_handler *handler)
1213 /* init our device sources: udev, network and user events */
1214 handler->udev = udev_init(handler, handler->waitset);
1218 handler->network = network_init(handler, handler->waitset,
1220 if (!handler->network)
1223 handler->user_event = user_event_init(handler, handler->waitset);
1224 if (!handler->user_event)
1230 static void device_handler_reinit_sources(struct device_handler *handler)
1232 /* if we haven't initialised sources previously (becuase we started in
1233 * safe mode), then init once here. */
1234 if (!(handler->udev || handler->network || handler->user_event)) {
1235 device_handler_init_sources(handler);
1239 udev_reinit(handler->udev);
1241 network_shutdown(handler->network);
1242 handler->network = network_init(handler, handler->waitset,
1246 static const char *fs_parameters(struct discover_device *dev,
1247 unsigned int rw_flags)
1249 const char *fstype = discover_device_get_param(dev, "ID_FS_TYPE");
1251 /* XFS journals are not cross-endian compatible; don't try recovery
1252 * even if we have a snapshot */
1253 if (!strncmp(fstype, "xfs", strlen("xfs")))
1254 return "norecovery";
1256 /* If we have a snapshot available allow touching the filesystem */
1260 if ((rw_flags | MS_RDONLY) != MS_RDONLY)
1263 /* Avoid writes due to journal replay if we don't have a snapshot */
1264 if (!strncmp(fstype, "ext4", strlen("ext4")))
1265 return "norecovery";
1270 static inline const char *get_device_path(struct discover_device *dev)
1272 return dev->ramdisk ? dev->ramdisk->snapshot : dev->device_path;
1275 static bool check_existing_mount(struct discover_device *dev)
1277 struct stat devstat, mntstat;
1278 const char *device_path;
1283 device_path = get_device_path(dev);
1285 rc = stat(device_path, &devstat);
1287 pb_debug("%s: stat failed: %s\n", __func__, strerror(errno));
1291 if (!S_ISBLK(devstat.st_mode)) {
1292 pb_debug("%s: %s isn't a block device?\n", __func__,
1297 fp = fopen("/proc/self/mounts", "r");
1300 mnt = getmntent(fp);
1304 if (!mnt->mnt_fsname || mnt->mnt_fsname[0] != '/')
1307 rc = stat(mnt->mnt_fsname, &mntstat);
1311 if (!S_ISBLK(mntstat.st_mode))
1314 if (mntstat.st_rdev == devstat.st_rdev) {
1315 dev->mount_path = talloc_strdup(dev, mnt->mnt_dir);
1316 dev->mounted_rw = !!hasmntopt(mnt, "rw");
1317 dev->mounted = true;
1318 dev->unmount = false;
1320 pb_debug("%s: %s is already mounted (r%c) at %s\n",
1321 __func__, dev->device_path,
1322 dev->mounted_rw ? 'w' : 'o',
1333 static int mount_device(struct discover_device *dev)
1335 const char *fstype, *device_path;
1338 if (!dev->device_path)
1344 if (check_existing_mount(dev))
1347 fstype = discover_device_get_param(dev, "ID_FS_TYPE");
1351 /* ext3 treats the norecovery option as an error, so mount the device
1352 * as an ext4 filesystem instead */
1353 if (!strncmp(fstype, "ext3", strlen("ext3"))) {
1354 pb_debug("Mounting ext3 filesystem as ext4\n");
1355 fstype = talloc_asprintf(dev, "ext4");
1358 dev->mount_path = join_paths(dev, mount_base(),
1361 if (pb_mkdir_recursive(dev->mount_path)) {
1362 pb_log("couldn't create mount directory %s: %s\n",
1363 dev->mount_path, strerror(errno));
1367 device_path = get_device_path(dev);
1369 pb_log("mounting device %s read-only\n", dev->device_path);
1371 rc = mount(device_path, dev->mount_path, fstype,
1372 MS_RDONLY | MS_SILENT,
1373 fs_parameters(dev, MS_RDONLY));
1375 dev->mounted = true;
1376 dev->mounted_rw = false;
1377 dev->unmount = true;
1381 pb_log("couldn't mount device %s: mount failed: %s\n",
1382 device_path, strerror(errno));
1384 /* If mount fails clean up any snapshot */
1385 devmapper_destroy_snapshot(dev);
1387 pb_rmdir_recursive(mount_base(), dev->mount_path);
1389 talloc_free(dev->mount_path);
1390 dev->mount_path = NULL;
1394 static int umount_device(struct discover_device *dev)
1396 const char *device_path;
1399 if (!dev->mounted || !dev->unmount)
1402 device_path = get_device_path(dev);
1404 pb_log("unmounting device %s\n", device_path);
1405 rc = umount(dev->mount_path);
1409 dev->mounted = false;
1410 devmapper_destroy_snapshot(dev);
1412 pb_rmdir_recursive(mount_base(), dev->mount_path);
1414 talloc_free(dev->mount_path);
1415 dev->mount_path = NULL;
1420 int device_request_write(struct discover_device *dev, bool *release)
1422 const char *fstype, *device_path;
1423 const struct config *config;
1428 config = config_get();
1429 if (!config->allow_writes)
1435 if (dev->mounted_rw)
1438 fstype = discover_device_get_param(dev, "ID_FS_TYPE");
1440 device_path = get_device_path(dev);
1442 pb_log("remounting device %s read-write\n", device_path);
1444 rc = umount(dev->mount_path);
1446 pb_log("Failed to unmount %s: %s\n",
1447 dev->mount_path, strerror(errno));
1451 rc = mount(device_path, dev->mount_path, fstype,
1453 fs_parameters(dev, MS_REMOUNT));
1457 dev->mounted_rw = true;
1462 pb_log("Unable to remount device %s read-write: %s\n",
1463 device_path, strerror(errno));
1464 if (mount(device_path, dev->mount_path, fstype,
1465 MS_RDONLY | MS_SILENT,
1466 fs_parameters(dev, MS_RDONLY)))
1467 pb_log("Unable to recover mount for %s: %s\n",
1468 device_path, strerror(errno));
1472 void device_release_write(struct discover_device *dev, bool release)
1474 const char *fstype, *device_path;
1480 device_path = get_device_path(dev);
1482 fstype = discover_device_get_param(dev, "ID_FS_TYPE");
1484 pb_log("remounting device %s read-only\n", device_path);
1486 if (umount(dev->mount_path)) {
1487 pb_log("Failed to unmount %s\n", dev->mount_path);
1490 dev->mounted_rw = dev->mounted = false;
1493 devmapper_merge_snapshot(dev);
1494 /* device_path becomes stale after merge */
1495 device_path = get_device_path(dev);
1498 mount(device_path, dev->mount_path, fstype,
1499 MS_RDONLY | MS_SILENT,
1500 fs_parameters(dev, MS_RDONLY));
1502 pb_log("Failed to remount %s read-only: %s\n",
1503 device_path, strerror(errno));
1505 dev->mounted = true;
1510 static void device_handler_update_lang(const char *lang __attribute__((unused)))
1514 static int device_handler_init_sources(
1515 struct device_handler *handler __attribute__((unused)))
1520 static void device_handler_reinit_sources(
1521 struct device_handler *handler __attribute__((unused)))
1525 static int umount_device(struct discover_device *dev __attribute__((unused)))
1530 static int __attribute__((unused)) mount_device(
1531 struct discover_device *dev __attribute__((unused)))
1536 int device_request_write(struct discover_device *dev __attribute__((unused)),
1543 void device_release_write(struct discover_device *dev __attribute__((unused)),
1544 bool release __attribute__((unused)))