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,
224 const char *uuid, const char *id)
226 struct discover_device *dev;
229 dev = device_lookup_by_uuid(handler, uuid);
231 dev = device_lookup_by_id(handler, id);
236 dev = talloc_zero(handler, struct discover_device);
237 dev->device = talloc_zero(dev, struct device);
238 dev->device->id = talloc_strdup(dev->device, id);
239 dev->uuid = talloc_strdup(dev, uuid);
240 list_init(&dev->params);
241 list_init(&dev->boot_options);
243 talloc_set_destructor(dev, destroy_device);
248 struct discover_device_param {
251 struct list_item list;
254 void discover_device_set_param(struct discover_device *device,
255 const char *name, const char *value)
257 struct discover_device_param *param;
260 list_for_each_entry(&device->params, param, list) {
261 if (!strcmp(param->name, name)) {
270 param = talloc(device, struct discover_device_param);
271 param->name = talloc_strdup(param, name);
272 list_add(&device->params, ¶m->list);
275 list_remove(¶m->list);
279 talloc_free(param->value);
282 param->value = talloc_strdup(param, value);
285 const char *discover_device_get_param(struct discover_device *device,
288 struct discover_device_param *param;
290 list_for_each_entry(&device->params, param, list) {
291 if (!strcmp(param->name, name))
297 struct device_handler *device_handler_init(struct discover_server *server,
298 struct waitset *waitset, int dry_run)
300 struct device_handler *handler;
303 handler = talloc_zero(NULL, struct device_handler);
304 handler->server = server;
305 handler->waitset = waitset;
306 handler->dry_run = dry_run;
307 handler->autoboot_enabled = config_get()->autoboot_enabled;
309 list_init(&handler->unresolved_boot_options);
311 /* set up our mount point base */
312 pb_mkdir_recursive(mount_base());
316 if (config_get()->safe_mode)
319 rc = device_handler_init_sources(handler);
321 talloc_free(handler);
328 void device_handler_reinit(struct device_handler *handler)
330 struct discover_boot_option *opt, *tmp;
331 struct ramdisk_device *ramdisk;
334 device_handler_cancel_default(handler);
336 /* free unresolved boot options */
337 list_for_each_entry_safe(&handler->unresolved_boot_options,
340 list_init(&handler->unresolved_boot_options);
342 /* drop all devices */
343 for (i = 0; i < handler->n_devices; i++) {
344 discover_server_notify_device_remove(handler->server,
345 handler->devices[i]->device);
346 ramdisk = handler->devices[i]->ramdisk;
347 talloc_free(handler->devices[i]);
348 talloc_free(ramdisk);
351 talloc_free(handler->devices);
352 handler->devices = NULL;
353 handler->n_devices = 0;
354 talloc_free(handler->ramdisks);
355 handler->ramdisks = NULL;
356 handler->n_ramdisks = 0;
358 device_handler_reinit_sources(handler);
361 void device_handler_remove(struct device_handler *handler,
362 struct discover_device *device)
364 struct discover_boot_option *opt, *tmp;
367 list_for_each_entry_safe(&device->boot_options, opt, tmp, list) {
368 if (opt == handler->default_boot_option) {
369 pb_log("Default option %s cancelled since device removed",
371 device_handler_cancel_default(handler);
376 for (i = 0; i < handler->n_devices; i++)
377 if (handler->devices[i] == device)
380 if (i == handler->n_devices) {
385 /* Free any unresolved options, as they're currently allocated
386 * against the handler */
387 list_for_each_entry_safe(&handler->unresolved_boot_options,
389 if (opt->device != device)
391 list_remove(&opt->list);
395 /* if this is a network device, we have to unregister it from the
397 if (device->device->type == DEVICE_TYPE_NETWORK)
398 network_unregister_device(handler->network, device);
400 handler->n_devices--;
401 memmove(&handler->devices[i], &handler->devices[i + 1],
402 (handler->n_devices - i) * sizeof(handler->devices[0]));
403 handler->devices = talloc_realloc(handler, handler->devices,
404 struct discover_device *, handler->n_devices);
406 if (device->notified)
407 discover_server_notify_device_remove(handler->server,
413 void device_handler_boot_status(void *arg, struct boot_status *status)
415 struct device_handler *handler = arg;
417 discover_server_notify_boot_status(handler->server, status);
420 static void countdown_status(struct device_handler *handler,
421 struct discover_boot_option *opt, unsigned int sec)
423 struct boot_status status;
425 status.type = BOOT_STATUS_INFO;
426 status.progress = -1;
427 status.detail = NULL;
428 status.message = talloc_asprintf(handler,
429 _("Booting in %d sec: %s"), sec, opt->option->name);
431 discover_server_notify_boot_status(handler->server, &status);
433 talloc_free(status.message);
436 static int default_timeout(void *arg)
438 struct device_handler *handler = arg;
439 struct discover_boot_option *opt;
441 if (!handler->default_boot_option)
444 if (handler->pending_boot)
447 opt = handler->default_boot_option;
449 if (handler->sec_to_boot) {
450 countdown_status(handler, opt, handler->sec_to_boot);
451 handler->sec_to_boot--;
452 handler->timeout_waiter = waiter_register_timeout(
453 handler->waitset, 1000,
454 default_timeout, handler);
458 handler->timeout_waiter = NULL;
460 pb_log("Timeout expired, booting default option %s\n", opt->option->id);
464 handler->pending_boot = boot(handler, handler->default_boot_option,
465 NULL, handler->dry_run, device_handler_boot_status,
467 handler->pending_boot_is_default = true;
472 enum ipmi_bootdev ipmi_type;
473 enum device_type device_type;
474 } device_type_map[] = {
475 { IPMI_BOOTDEV_NETWORK, DEVICE_TYPE_NETWORK },
476 { IPMI_BOOTDEV_DISK, DEVICE_TYPE_DISK },
477 { IPMI_BOOTDEV_DISK, DEVICE_TYPE_USB },
478 { IPMI_BOOTDEV_CDROM, DEVICE_TYPE_OPTICAL },
481 static bool ipmi_device_type_matches(enum ipmi_bootdev ipmi_type,
482 enum device_type device_type)
486 for (i = 0; i < ARRAY_SIZE(device_type_map); i++) {
487 if (device_type_map[i].device_type == device_type)
488 return device_type_map[i].ipmi_type == ipmi_type;
494 static int autoboot_option_priority(const struct config *config,
495 struct discover_boot_option *opt)
497 enum device_type type = opt->device->device->type;
498 const char *uuid = opt->device->uuid;
499 struct autoboot_option *auto_opt;
502 for (i = 0; i < config->n_autoboot_opts; i++) {
503 auto_opt = &config->autoboot_opts[i];
504 if (auto_opt->boot_type == BOOT_DEVICE_UUID)
505 if (!strcmp(auto_opt->uuid, uuid))
506 return DEFAULT_PRIORITY_LOCAL_FIRST + i;
508 if (auto_opt->boot_type == BOOT_DEVICE_TYPE)
509 if (auto_opt->type == type ||
510 auto_opt->type == DEVICE_TYPE_ANY)
511 return DEFAULT_PRIORITY_LOCAL_FIRST + i;
518 * We have different priorities to resolve conflicts between boot options that
519 * report to be the default for their device. This function assigns a priority
522 static enum default_priority default_option_priority(
523 struct discover_boot_option *opt)
525 const struct config *config;
527 config = config_get();
529 /* We give highest priority to IPMI-configured boot options. If
530 * we have an IPMI bootdev configuration set, then we don't allow
531 * any other defaults */
532 if (config->ipmi_bootdev) {
533 bool ipmi_match = ipmi_device_type_matches(config->ipmi_bootdev,
534 opt->device->device->type);
536 return DEFAULT_PRIORITY_REMOTE;
538 pb_debug("handler: disabled default priority due to "
539 "non-matching IPMI type %x\n",
540 config->ipmi_bootdev);
541 return DEFAULT_PRIORITY_DISABLED;
544 /* Next, try to match the option against the user-defined autoboot
545 * options, either by device UUID or type. */
546 if (config->n_autoboot_opts) {
547 int boot_match = autoboot_option_priority(config, opt);
552 /* If the option didn't match any entry in the array, it is disabled */
553 pb_debug("handler: disabled default priority due to "
554 "non-matching UUID or type\n");
555 return DEFAULT_PRIORITY_DISABLED;
558 static void set_default(struct device_handler *handler,
559 struct discover_boot_option *opt)
561 enum default_priority cur_prio, new_prio;
563 if (!handler->autoboot_enabled)
566 pb_debug("handler: new default option: %s\n", opt->option->id);
568 new_prio = default_option_priority(opt);
570 /* Anything outside our range prevents a default boot */
571 if (new_prio >= DEFAULT_PRIORITY_DISABLED)
574 pb_debug("handler: calculated priority %d\n", new_prio);
576 /* Resolve any conflicts: if we have a new default option, it only
577 * replaces the current if it has a higher priority. */
578 if (handler->default_boot_option) {
580 cur_prio = handler->default_boot_option_priority;
582 if (new_prio < cur_prio) {
583 pb_log("handler: new prio %d beats "
584 "old prio %d for %s\n",
586 handler->default_boot_option
588 handler->default_boot_option = opt;
589 handler->default_boot_option_priority = new_prio;
590 /* extend the timeout a little, so the user sees some
591 * indication of the change */
592 handler->sec_to_boot += 2;
598 handler->sec_to_boot = config_get()->autoboot_timeout_sec;
599 handler->default_boot_option = opt;
600 handler->default_boot_option_priority = new_prio;
602 pb_log("handler: boot option %s set as default, timeout %u sec.\n",
603 opt->option->id, handler->sec_to_boot);
605 default_timeout(handler);
608 static bool resource_is_resolved(struct resource *res)
610 return !res || res->resolved;
613 /* We only use this in an assert, which will disappear if we're compiling
614 * with NDEBUG, so we need the 'used' attribute for these builds */
615 static bool __attribute__((used)) boot_option_is_resolved(
616 struct discover_boot_option *opt)
618 return resource_is_resolved(opt->boot_image) &&
619 resource_is_resolved(opt->initrd) &&
620 resource_is_resolved(opt->dtb) &&
621 resource_is_resolved(opt->args_sig_file) &&
622 resource_is_resolved(opt->icon);
625 static bool resource_resolve(struct resource *res, const char *name,
626 struct discover_boot_option *opt,
627 struct device_handler *handler)
629 struct parser *parser = opt->source;
631 if (resource_is_resolved(res))
634 pb_debug("Attempting to resolve resource %s->%s with parser %s\n",
635 opt->option->id, name, parser->name);
636 parser->resolve_resource(handler, res);
638 return res->resolved;
641 static bool boot_option_resolve(struct discover_boot_option *opt,
642 struct device_handler *handler)
644 return resource_resolve(opt->boot_image, "boot_image", opt, handler) &&
645 resource_resolve(opt->initrd, "initrd", opt, handler) &&
646 resource_resolve(opt->dtb, "dtb", opt, handler) &&
647 resource_resolve(opt->args_sig_file, "args_sig_file", opt,
649 resource_resolve(opt->icon, "icon", opt, handler);
652 static void boot_option_finalise(struct device_handler *handler,
653 struct discover_boot_option *opt)
655 assert(boot_option_is_resolved(opt));
657 /* check that the parsers haven't set any of the final data */
658 assert(!opt->option->boot_image_file);
659 assert(!opt->option->initrd_file);
660 assert(!opt->option->dtb_file);
661 assert(!opt->option->icon_file);
662 assert(!opt->option->device_id);
663 assert(!opt->option->args_sig_file);
666 opt->option->boot_image_file = opt->boot_image->url->full;
668 opt->option->initrd_file = opt->initrd->url->full;
670 opt->option->dtb_file = opt->dtb->url->full;
672 opt->option->icon_file = opt->icon->url->full;
673 if (opt->args_sig_file)
674 opt->option->args_sig_file = opt->args_sig_file->url->full;
676 opt->option->device_id = opt->device->device->id;
678 if (opt->option->is_default)
679 set_default(handler, opt);
682 static void notify_boot_option(struct device_handler *handler,
683 struct discover_boot_option *opt)
685 struct discover_device *dev = opt->device;
688 discover_server_notify_device_add(handler->server,
689 opt->device->device);
690 dev->notified = true;
691 discover_server_notify_boot_option_add(handler->server, opt->option);
694 static void process_boot_option_queue(struct device_handler *handler)
696 struct discover_boot_option *opt, *tmp;
698 list_for_each_entry_safe(&handler->unresolved_boot_options,
701 pb_debug("queue: attempting resolution for %s\n",
704 if (!boot_option_resolve(opt, handler))
707 pb_debug("\tresolved!\n");
709 list_remove(&opt->list);
710 list_add_tail(&opt->device->boot_options, &opt->list);
711 talloc_steal(opt->device, opt);
712 boot_option_finalise(handler, opt);
713 notify_boot_option(handler, opt);
717 struct discover_context *device_handler_discover_context_create(
718 struct device_handler *handler,
719 struct discover_device *device)
721 struct discover_context *ctx;
723 ctx = talloc_zero(handler, struct discover_context);
724 ctx->device = device;
725 ctx->network = handler->network;
726 list_init(&ctx->boot_options);
731 void device_handler_add_device(struct device_handler *handler,
732 struct discover_device *device)
734 handler->n_devices++;
735 handler->devices = talloc_realloc(handler, handler->devices,
736 struct discover_device *, handler->n_devices);
737 handler->devices[handler->n_devices - 1] = device;
739 if (device->device->type == DEVICE_TYPE_NETWORK)
740 network_register_device(handler->network, device);
743 void device_handler_add_ramdisk(struct device_handler *handler,
746 struct ramdisk_device *dev;
752 for (i = 0; i < handler->n_ramdisks; i++)
753 if (!strcmp(handler->ramdisks[i]->path, path))
756 dev = talloc_zero(handler, struct ramdisk_device);
758 pb_log("Failed to allocate memory to track %s\n", path);
762 dev->path = talloc_strdup(handler, path);
764 handler->ramdisks = talloc_realloc(handler, handler->ramdisks,
765 struct ramdisk_device *,
766 handler->n_ramdisks + 1);
767 if (!handler->ramdisks) {
768 pb_log("Failed to reallocate memory"
769 "- ramdisk tracking inconsistent!\n");
773 handler->ramdisks[i] = dev;
774 i = handler->n_ramdisks++;
777 struct ramdisk_device *device_handler_get_ramdisk(
778 struct device_handler *handler)
784 /* Check if free ramdisk exists */
785 for (i = 0; i < handler->n_ramdisks; i++)
786 if (!handler->ramdisks[i]->snapshot &&
787 !handler->ramdisks[i]->origin &&
788 !handler->ramdisks[i]->base)
789 return handler->ramdisks[i];
791 /* Otherwise create a new one */
792 name = talloc_asprintf(handler, "/dev/ram%d",
793 handler->n_ramdisks);
795 pb_debug("Failed to allocate memory to name /dev/ram%d",
796 handler->n_ramdisks);
800 id = makedev(1, handler->n_ramdisks);
801 if (mknod(name, S_IFBLK, id)) {
802 if (errno == EEXIST) {
803 /* We haven't yet received updates for existing
804 * ramdisks - add and use this one */
805 pb_debug("Using untracked ramdisk %s\n", name);
807 pb_log("Failed to create new ramdisk %s: %s\n",
808 name, strerror(errno));
812 device_handler_add_ramdisk(handler, name);
815 return handler->ramdisks[i];
818 void device_handler_release_ramdisk(struct discover_device *device)
820 struct ramdisk_device *ramdisk = device->ramdisk;
822 talloc_free(ramdisk->snapshot);
823 talloc_free(ramdisk->origin);
824 talloc_free(ramdisk->base);
826 ramdisk->snapshot = ramdisk->origin = ramdisk->base = NULL;
827 ramdisk->sectors = 0;
829 device->ramdisk = NULL;
832 /* Start discovery on a hotplugged device. The device will be in our devices
833 * array, but has only just been initialised by the hotplug source.
835 int device_handler_discover(struct device_handler *handler,
836 struct discover_device *dev)
838 struct discover_context *ctx;
839 struct boot_status *status;
842 status = talloc_zero(handler, struct boot_status);
843 status->type = BOOT_STATUS_INFO;
845 * TRANSLATORS: this string will be passed the type and identifier
846 * of the device. For example, the first parameter could be "Disk",
847 * (which will be translated accordingly) and the second a Linux device
848 * identifier like 'sda1' (which will not be translated)
850 status->message = talloc_asprintf(status, _("Processing %s device %s"),
851 device_type_display_name(dev->device->type),
853 device_handler_boot_status(handler, status);
855 process_boot_option_queue(handler);
857 /* create our context */
858 ctx = device_handler_discover_context_create(handler, dev);
860 rc = mount_device(dev);
864 /* add this device to our system info */
865 system_info_register_blockdev(dev->device->id, dev->uuid,
868 /* run the parsers. This will populate the ctx's boot_option list. */
869 iterate_parsers(ctx);
871 /* add discovered stuff to the handler */
872 device_handler_discover_context_commit(handler, ctx);
876 * TRANSLATORS: the format specifier in this string is a Linux
877 * device identifier, like 'sda1'
879 status->message = talloc_asprintf(status,_("Processing %s complete"),
881 device_handler_boot_status(handler, status);
884 talloc_unlink(handler, ctx);
889 /* Incoming dhcp event */
890 int device_handler_dhcp(struct device_handler *handler,
891 struct discover_device *dev, struct event *event)
893 struct discover_context *ctx;
894 struct boot_status *status;
896 status = talloc_zero(handler, struct boot_status);
897 status->type = BOOT_STATUS_INFO;
899 * TRANSLATORS: this format specifier will be the name of a network
900 * device, like 'eth0'.
902 status->message = talloc_asprintf(status, _("Processing dhcp event on %s"),
904 device_handler_boot_status(handler, status);
906 /* create our context */
907 ctx = device_handler_discover_context_create(handler, dev);
908 talloc_steal(ctx, event);
911 iterate_parsers(ctx);
913 device_handler_discover_context_commit(handler, ctx);
916 * TRANSLATORS: this format specifier will be the name of a network
917 * device, like 'eth0'.
919 status->message = talloc_asprintf(status,_("Processing %s complete"),
921 device_handler_boot_status(handler, status);
924 talloc_unlink(handler, ctx);
929 static struct discover_boot_option *find_boot_option_by_id(
930 struct device_handler *handler, const char *id)
934 for (i = 0; i < handler->n_devices; i++) {
935 struct discover_device *dev = handler->devices[i];
936 struct discover_boot_option *opt;
938 list_for_each_entry(&dev->boot_options, opt, list)
939 if (!strcmp(opt->option->id, id))
946 void device_handler_boot(struct device_handler *handler,
947 struct boot_command *cmd)
949 struct discover_boot_option *opt = NULL;
951 if (cmd->option_id && strlen(cmd->option_id))
952 opt = find_boot_option_by_id(handler, cmd->option_id);
954 if (handler->pending_boot)
955 boot_cancel(handler->pending_boot);
959 handler->pending_boot = boot(handler, opt, cmd, handler->dry_run,
960 device_handler_boot_status, handler);
961 handler->pending_boot_is_default = false;
964 void device_handler_cancel_default(struct device_handler *handler)
966 struct boot_status status;
968 if (handler->timeout_waiter)
969 waiter_remove(handler->timeout_waiter);
971 handler->timeout_waiter = NULL;
972 handler->autoboot_enabled = false;
974 /* we only send status if we had a default boot option queued */
975 if (!handler->default_boot_option)
978 pb_log("Cancelling default boot option\n");
980 if (handler->pending_boot && handler->pending_boot_is_default) {
981 boot_cancel(handler->pending_boot);
982 handler->pending_boot = NULL;
983 handler->pending_boot_is_default = false;
986 handler->default_boot_option = NULL;
988 status.type = BOOT_STATUS_INFO;
989 status.progress = -1;
990 status.detail = NULL;
991 status.message = _("Default boot cancelled");
993 discover_server_notify_boot_status(handler->server, &status);
996 void device_handler_update_config(struct device_handler *handler,
997 struct config *config)
1001 rc = config_set(config);
1005 discover_server_notify_config(handler->server, config);
1006 device_handler_update_lang(config->lang);
1007 device_handler_reinit(handler);
1010 static char *device_from_addr(void *ctx, struct pb_url *url)
1012 char *ipaddr, *buf, *tok, *dev = NULL;
1013 const char *delim = " ";
1014 struct sockaddr_in *ip;
1015 struct sockaddr_in si;
1016 struct addrinfo *res;
1020 /* Note: IPv4 only */
1021 rc = inet_pton(AF_INET, url->host, &(si.sin_addr));
1025 /* need to turn hostname into a valid IP */
1026 rc = getaddrinfo(url->host, NULL, NULL, &res);
1028 pb_debug("%s: Invalid URL\n",__func__);
1031 ipaddr = talloc_array(ctx,char,INET_ADDRSTRLEN);
1032 ip = (struct sockaddr_in *) res->ai_addr;
1033 inet_ntop(AF_INET, &(ip->sin_addr), ipaddr, INET_ADDRSTRLEN);
1037 const char *argv[] = {
1039 "route", "show", "to", "match",
1044 p = process_create(ctx);
1046 p->path = pb_system_apps.ip;
1048 p->keep_stdout = true;
1050 rc = process_run_sync(p);
1052 if (rc || p->exit_status) {
1053 /* ip has complained for some reason; most likely
1054 * there is no route to the host - bail out */
1055 pb_debug("%s: `ip` returns non-zero exit status\n", __func__);
1056 pb_debug("ip buf: %s\n", p->stdout_buf);
1061 buf = p->stdout_buf;
1062 /* If a route is found, ip-route output will be of the form
1063 * "... dev DEVNAME ... " */
1064 tok = strtok(buf, delim);
1066 if (!strcmp(tok, "dev")) {
1067 tok = strtok(NULL, delim);
1068 dev = talloc_strdup(ctx, tok);
1071 tok = strtok(NULL, delim);
1076 pb_debug("%s: Found interface '%s'\n", __func__,dev);
1080 void device_handler_process_url(struct device_handler *handler,
1081 const char *url, const char *mac, const char *ip)
1083 struct discover_context *ctx;
1084 struct discover_device *dev;
1085 struct boot_status *status;
1086 struct pb_url *pb_url;
1087 struct event *event;
1088 struct param *param;
1090 status = talloc(handler, struct boot_status);
1092 status->type = BOOT_STATUS_ERROR;
1093 status->progress = 0;
1094 status->detail = talloc_asprintf(status,
1095 _("Received config URL %s"), url);
1097 if (!handler->network) {
1098 status->message = talloc_asprintf(handler,
1099 _("No network configured"));
1103 event = talloc(handler, struct event);
1104 event->type = EVENT_TYPE_USER;
1105 event->action = EVENT_ACTION_URL;
1107 if (url[strlen(url) - 1] == '/') {
1108 event->params = talloc_array(event, struct param, 3);
1109 param = &event->params[0];
1110 param->name = talloc_strdup(event, "pxepathprefix");
1111 param->value = talloc_strdup(event, url);
1112 param = &event->params[1];
1113 param->name = talloc_strdup(event, "mac");
1114 param->value = talloc_strdup(event, mac);
1115 param = &event->params[2];
1116 param->name = talloc_strdup(event, "ip");
1117 param->value = talloc_strdup(event, ip);
1118 event->n_params = 3;
1120 event->params = talloc_array(event, struct param, 1);
1121 param = &event->params[0];
1122 param->name = talloc_strdup(event, "pxeconffile");
1123 param->value = talloc_strdup(event, url);
1124 event->n_params = 1;
1127 pb_url = pb_url_parse(event, event->params->value);
1128 if (!pb_url || (pb_url->scheme != pb_url_file && !pb_url->host)) {
1129 status->message = talloc_asprintf(handler,
1130 _("Invalid config URL!"));
1134 if (pb_url->scheme == pb_url_file)
1135 event->device = talloc_asprintf(event, "local");
1137 event->device = device_from_addr(event, pb_url);
1139 if (!event->device) {
1140 status->message = talloc_asprintf(status,
1141 _("Unable to route to host %s"),
1146 dev = discover_device_create(handler, mac, event->device);
1147 if (pb_url->scheme == pb_url_file)
1148 dev->device->type = DEVICE_TYPE_ANY;
1149 ctx = device_handler_discover_context_create(handler, dev);
1150 talloc_steal(ctx, event);
1153 iterate_parsers(ctx);
1155 device_handler_discover_context_commit(handler, ctx);
1157 talloc_unlink(handler, ctx);
1159 status->type = BOOT_STATUS_INFO;
1160 status->message = talloc_asprintf(status, _("Config file %s parsed"),
1163 device_handler_boot_status(handler, status);
1164 talloc_free(status);
1167 #ifndef PETITBOOT_TEST
1170 * context_commit - Commit a temporary discovery context to the handler,
1171 * and notify the clients about any new options / devices
1173 void device_handler_discover_context_commit(struct device_handler *handler,
1174 struct discover_context *ctx)
1176 struct discover_device *dev = ctx->device;
1177 struct discover_boot_option *opt, *tmp;
1179 if (!device_lookup_by_uuid(handler, dev->uuid))
1180 device_handler_add_device(handler, dev);
1182 /* move boot options from the context to the device */
1183 list_for_each_entry_safe(&ctx->boot_options, opt, tmp, list) {
1184 list_remove(&opt->list);
1186 /* All boot options need at least a kernel image */
1187 if (!opt->boot_image || !opt->boot_image->url) {
1188 pb_log("boot option %s is missing boot image, ignoring\n",
1194 if (boot_option_resolve(opt, handler)) {
1195 pb_log("boot option %s is resolved, "
1196 "sending to clients\n",
1198 list_add_tail(&dev->boot_options, &opt->list);
1199 talloc_steal(dev, opt);
1200 boot_option_finalise(handler, opt);
1201 notify_boot_option(handler, opt);
1203 if (!opt->source->resolve_resource) {
1204 pb_log("parser %s gave us an unresolved "
1205 "resource (%s), but no way to "
1207 opt->source->name, opt->option->id);
1210 pb_log("boot option %s is unresolved, "
1211 "adding to queue\n",
1213 list_add(&handler->unresolved_boot_options,
1215 talloc_steal(handler, opt);
1221 static void device_handler_update_lang(const char *lang)
1223 const char *cur_lang;
1228 cur_lang = setlocale(LC_ALL, NULL);
1229 if (cur_lang && !strcmp(cur_lang, lang))
1232 setlocale(LC_ALL, lang);
1235 static int device_handler_init_sources(struct device_handler *handler)
1237 /* init our device sources: udev, network and user events */
1238 handler->udev = udev_init(handler, handler->waitset);
1242 handler->network = network_init(handler, handler->waitset,
1244 if (!handler->network)
1247 handler->user_event = user_event_init(handler, handler->waitset);
1248 if (!handler->user_event)
1254 static void device_handler_reinit_sources(struct device_handler *handler)
1256 /* if we haven't initialised sources previously (becuase we started in
1257 * safe mode), then init once here. */
1258 if (!(handler->udev || handler->network || handler->user_event)) {
1259 device_handler_init_sources(handler);
1263 udev_reinit(handler->udev);
1265 network_shutdown(handler->network);
1266 handler->network = network_init(handler, handler->waitset,
1270 static inline const char *get_device_path(struct discover_device *dev)
1272 return dev->ramdisk ? dev->ramdisk->snapshot : dev->device_path;
1275 static char *check_subvols(struct discover_device *dev)
1277 const char *fstype = discover_device_get_param(dev, "ID_FS_TYPE");
1282 if (strncmp(fstype, "btrfs", strlen("btrfs")))
1283 return dev->mount_path;
1285 /* On btrfs a device's root may be under a subvolume path */
1286 path = join_paths(dev, dev->mount_path, "@");
1287 rc = stat(path, &sb);
1288 if (!rc && S_ISDIR(sb.st_mode)) {
1289 pb_debug("Using '%s' for btrfs root path\n", path);
1294 return dev->mount_path;
1297 static bool check_existing_mount(struct discover_device *dev)
1299 struct stat devstat, mntstat;
1300 const char *device_path;
1305 device_path = get_device_path(dev);
1307 rc = stat(device_path, &devstat);
1309 pb_debug("%s: stat failed: %s\n", __func__, strerror(errno));
1313 if (!S_ISBLK(devstat.st_mode)) {
1314 pb_debug("%s: %s isn't a block device?\n", __func__,
1319 fp = fopen("/proc/self/mounts", "r");
1322 mnt = getmntent(fp);
1326 if (!mnt->mnt_fsname || mnt->mnt_fsname[0] != '/')
1329 rc = stat(mnt->mnt_fsname, &mntstat);
1333 if (!S_ISBLK(mntstat.st_mode))
1336 if (mntstat.st_rdev == devstat.st_rdev) {
1337 dev->mount_path = talloc_strdup(dev, mnt->mnt_dir);
1338 dev->root_path = check_subvols(dev);
1339 dev->mounted_rw = !!hasmntopt(mnt, "rw");
1340 dev->mounted = true;
1341 dev->unmount = false;
1343 pb_debug("%s: %s is already mounted (r%c) at %s\n",
1344 __func__, dev->device_path,
1345 dev->mounted_rw ? 'w' : 'o',
1357 * Attempt to mount a filesystem safely, while handling certain filesytem-
1360 static int try_mount(const char *device_path, const char *mount_path,
1361 const char *fstype, unsigned long flags,
1364 const char *fs, *safe_opts;
1367 /* Mount ext3 as ext4 instead so 'norecovery' can be used */
1368 if (strncmp(fstype, "ext3", strlen("ext3")) == 0) {
1369 pb_debug("Mounting ext3 filesystem as ext4\n");
1374 if (strncmp(fs, "xfs", strlen("xfs")) == 0 ||
1375 strncmp(fs, "ext4", strlen("ext4")) == 0)
1376 safe_opts = "norecovery";
1381 /* If no snapshot is available don't attempt recovery */
1383 return mount(device_path, mount_path, fs, flags, safe_opts);
1385 rc = mount(device_path, mount_path, fs, flags, NULL);
1390 /* Mounting failed; some filesystems will fail to mount if a recovery
1391 * journal exists (eg. cross-endian XFS), so try again with norecovery
1392 * where that option is available.
1393 * If mounting read-write just return the error as norecovery is not a
1395 if ((flags & MS_RDONLY) != MS_RDONLY || !safe_opts)
1399 return mount(device_path, mount_path, fs, flags, safe_opts);
1402 static int mount_device(struct discover_device *dev)
1404 const char *fstype, *device_path;
1407 if (!dev->device_path)
1413 if (check_existing_mount(dev))
1416 fstype = discover_device_get_param(dev, "ID_FS_TYPE");
1420 dev->mount_path = join_paths(dev, mount_base(),
1423 if (pb_mkdir_recursive(dev->mount_path)) {
1424 pb_log("couldn't create mount directory %s: %s\n",
1425 dev->mount_path, strerror(errno));
1429 device_path = get_device_path(dev);
1431 pb_log("mounting device %s read-only\n", dev->device_path);
1432 rc = try_mount(device_path, dev->mount_path, fstype,
1433 MS_RDONLY | MS_SILENT, dev->ramdisk);
1436 dev->mounted = true;
1437 dev->mounted_rw = false;
1438 dev->unmount = true;
1439 dev->root_path = check_subvols(dev);
1443 pb_log("couldn't mount device %s: mount failed: %s\n",
1444 device_path, strerror(errno));
1446 /* If mount fails clean up any snapshot */
1447 devmapper_destroy_snapshot(dev);
1449 pb_rmdir_recursive(mount_base(), dev->mount_path);
1451 talloc_free(dev->mount_path);
1452 dev->mount_path = NULL;
1456 static int umount_device(struct discover_device *dev)
1458 const char *device_path;
1461 if (!dev->mounted || !dev->unmount)
1464 device_path = get_device_path(dev);
1466 pb_log("unmounting device %s\n", device_path);
1467 rc = umount(dev->mount_path);
1471 dev->mounted = false;
1472 devmapper_destroy_snapshot(dev);
1474 pb_rmdir_recursive(mount_base(), dev->mount_path);
1476 talloc_free(dev->mount_path);
1477 dev->mount_path = NULL;
1478 dev->root_path = NULL;
1483 int device_request_write(struct discover_device *dev, bool *release)
1485 const char *fstype, *device_path;
1486 const struct config *config;
1491 config = config_get();
1492 if (!config->allow_writes)
1498 if (dev->mounted_rw)
1501 fstype = discover_device_get_param(dev, "ID_FS_TYPE");
1503 device_path = get_device_path(dev);
1505 pb_log("remounting device %s read-write\n", device_path);
1507 rc = umount(dev->mount_path);
1509 pb_log("Failed to unmount %s: %s\n",
1510 dev->mount_path, strerror(errno));
1514 rc = try_mount(device_path, dev->mount_path, fstype,
1515 MS_SILENT, dev->ramdisk);
1519 dev->mounted_rw = true;
1524 pb_log("Unable to remount device %s read-write: %s\n",
1525 device_path, strerror(errno));
1526 rc = try_mount(device_path, dev->mount_path, fstype,
1527 MS_RDONLY | MS_SILENT, dev->ramdisk);
1529 pb_log("Unable to recover mount for %s: %s\n",
1530 device_path, strerror(errno));
1534 void device_release_write(struct discover_device *dev, bool release)
1536 const char *fstype, *device_path;
1541 device_path = get_device_path(dev);
1543 fstype = discover_device_get_param(dev, "ID_FS_TYPE");
1545 pb_log("remounting device %s read-only\n", device_path);
1547 if (umount(dev->mount_path)) {
1548 pb_log("Failed to unmount %s\n", dev->mount_path);
1551 dev->mounted_rw = dev->mounted = false;
1554 devmapper_merge_snapshot(dev);
1555 /* device_path becomes stale after merge */
1556 device_path = get_device_path(dev);
1559 if (try_mount(device_path, dev->mount_path, fstype,
1560 MS_RDONLY | MS_SILENT, dev->ramdisk))
1561 pb_log("Failed to remount %s read-only: %s\n",
1562 device_path, strerror(errno));
1564 dev->mounted = true;
1567 void device_sync_snapshots(struct device_handler *handler, const char *device)
1569 struct discover_device *dev = NULL;
1573 /* Find matching device and sync */
1574 dev = device_lookup_by_name(handler, device);
1576 pb_log("%s: device name '%s' unrecognised\n",
1581 device_release_write(dev, true);
1583 pb_log("%s has no snapshot to merge, skipping\n",
1588 /* Otherwise sync all relevant devices */
1589 for (i = 0; i < handler->n_devices; i++) {
1590 dev = handler->devices[i];
1591 if (dev->device->type != DEVICE_TYPE_DISK &&
1592 dev->device->type != DEVICE_TYPE_USB)
1595 device_release_write(dev, true);
1597 pb_log("%s has no snapshot to merge, skipping\n",
1604 void device_handler_discover_context_commit(
1605 struct device_handler *handler __attribute__((unused)),
1606 struct discover_context *ctx __attribute__((unused)))
1608 pb_log("%s stubbed out for test cases\n", __func__);
1611 static void device_handler_update_lang(const char *lang __attribute__((unused)))
1615 static int device_handler_init_sources(
1616 struct device_handler *handler __attribute__((unused)))
1621 static void device_handler_reinit_sources(
1622 struct device_handler *handler __attribute__((unused)))
1626 static int umount_device(struct discover_device *dev __attribute__((unused)))
1631 static int __attribute__((unused)) mount_device(
1632 struct discover_device *dev __attribute__((unused)))
1637 int device_request_write(struct discover_device *dev __attribute__((unused)),
1644 void device_release_write(struct discover_device *dev __attribute__((unused)),
1645 bool release __attribute__((unused)))
1649 void device_sync_snapshots(
1650 struct device_handler *handler __attribute__((unused)),
1651 const char *device __attribute__((unused)))