12 #include <sys/mount.h>
14 #include <talloc/talloc.h>
15 #include <list/list.h>
17 #include <types/types.h>
18 #include <system/system.h>
19 #include <process/process.h>
21 #include <i18n/i18n.h>
22 #include <pb-config/pb-config.h>
24 #include <sys/sysmacros.h>
25 #include <sys/types.h>
26 #include <sys/socket.h>
28 #include <arpa/inet.h>
30 #include "device-handler.h"
31 #include "discover-server.h"
32 #include "devmapper.h"
33 #include "user-event.h"
45 enum default_priority {
46 DEFAULT_PRIORITY_TEMP_USER = 1,
47 DEFAULT_PRIORITY_REMOTE = 2,
48 DEFAULT_PRIORITY_LOCAL_FIRST = 3,
49 DEFAULT_PRIORITY_LOCAL_LAST = 0xfe,
50 DEFAULT_PRIORITY_DISABLED = 0xff,
53 static int default_rescan_timeout = 5 * 60; /* seconds */
55 struct progress_info {
56 unsigned int percentage;
57 unsigned long size; /* size in bytes */
59 const struct process_info *procinfo;
60 struct list_item list;
63 struct device_handler {
64 struct discover_server *server;
68 struct network *network;
69 struct user_event *user_event;
71 struct discover_device **devices;
72 unsigned int n_devices;
74 struct ramdisk_device **ramdisks;
75 unsigned int n_ramdisks;
77 struct waitset *waitset;
78 struct waiter *timeout_waiter;
79 bool autoboot_enabled;
80 unsigned int sec_to_boot;
81 struct autoboot_option *temp_autoboot;
83 struct discover_boot_option *default_boot_option;
84 int default_boot_option_priority;
86 struct list unresolved_boot_options;
88 struct boot_task *pending_boot;
89 bool pending_boot_is_default;
92 unsigned int n_progress;
94 struct plugin_option **plugins;
95 unsigned int n_plugins;
96 bool plugin_installing;
99 static int mount_device(struct discover_device *dev);
100 static int umount_device(struct discover_device *dev);
102 static int device_handler_init_sources(struct device_handler *handler);
103 static void device_handler_reinit_sources(struct device_handler *handler);
105 static void device_handler_update_lang(const char *lang);
107 void discover_context_add_boot_option(struct discover_context *ctx,
108 struct discover_boot_option *boot_option)
110 boot_option->source = ctx->parser;
111 list_add_tail(&ctx->boot_options, &boot_option->list);
112 talloc_steal(ctx, boot_option);
116 * device_handler_get_device_count - Get the count of current handler devices.
119 int device_handler_get_device_count(const struct device_handler *handler)
121 return handler->n_devices;
125 * device_handler_get_device - Get a handler device by index.
128 const struct discover_device *device_handler_get_device(
129 const struct device_handler *handler, unsigned int index)
131 if (index >= handler->n_devices) {
132 assert(0 && "bad index");
136 return handler->devices[index];
140 * device_handler_get_plugin_count - Get the count of current handler plugins.
142 int device_handler_get_plugin_count(const struct device_handler *handler)
144 return handler->n_plugins;
148 * discover_handler_get_plugin - Get a handler plugin by index.
150 const struct plugin_option *device_handler_get_plugin(
151 const struct device_handler *handler, unsigned int index)
153 if (index >= handler->n_plugins) {
154 assert(0 && "bad index");
158 return handler->plugins[index];
161 struct network *device_handler_get_network(
162 const struct device_handler *handler)
164 return handler->network;
167 struct discover_boot_option *discover_boot_option_create(
168 struct discover_context *ctx,
169 struct discover_device *device)
171 struct discover_boot_option *opt;
173 opt = talloc_zero(ctx, struct discover_boot_option);
174 opt->option = talloc_zero(opt, struct boot_option);
175 opt->device = device;
180 static int device_match_uuid(struct discover_device *dev, const char *uuid)
182 return dev->uuid && !strcmp(dev->uuid, uuid);
185 static int device_match_label(struct discover_device *dev, const char *label)
187 return dev->label && !strcmp(dev->label, label);
190 static int device_match_id(struct discover_device *dev, const char *id)
192 return !strcmp(dev->device->id, id);
195 static int device_match_serial(struct discover_device *dev, const char *serial)
197 const char *val = discover_device_get_param(dev, "ID_SERIAL");
198 return val && !strcmp(val, serial);
201 static struct discover_device *device_lookup(
202 struct device_handler *device_handler,
203 int (match_fn)(struct discover_device *, const char *),
206 struct discover_device *dev;
212 for (i = 0; i < device_handler->n_devices; i++) {
213 dev = device_handler->devices[i];
215 if (match_fn(dev, str))
222 struct discover_device *device_lookup_by_name(struct device_handler *handler,
225 if (!strncmp(name, "/dev/", strlen("/dev/")))
226 name += strlen("/dev/");
228 return device_lookup_by_id(handler, name);
231 struct discover_device *device_lookup_by_uuid(
232 struct device_handler *device_handler,
235 return device_lookup(device_handler, device_match_uuid, uuid);
238 struct discover_device *device_lookup_by_label(
239 struct device_handler *device_handler,
242 return device_lookup(device_handler, device_match_label, label);
245 struct discover_device *device_lookup_by_id(
246 struct device_handler *device_handler,
249 return device_lookup(device_handler, device_match_id, id);
252 struct discover_device *device_lookup_by_serial(
253 struct device_handler *device_handler,
256 return device_lookup(device_handler, device_match_serial, serial);
259 void device_handler_destroy(struct device_handler *handler)
261 talloc_free(handler);
264 static int destroy_device(void *arg)
266 struct discover_device *dev = arg;
273 struct discover_device *discover_device_create(struct device_handler *handler,
274 const char *uuid, const char *id)
276 struct discover_device *dev;
279 dev = device_lookup_by_uuid(handler, uuid);
281 dev = device_lookup_by_id(handler, id);
286 dev = talloc_zero(handler, struct discover_device);
287 dev->device = talloc_zero(dev, struct device);
288 dev->device->id = talloc_strdup(dev->device, id);
289 dev->uuid = talloc_strdup(dev, uuid);
290 list_init(&dev->params);
291 list_init(&dev->boot_options);
293 talloc_set_destructor(dev, destroy_device);
298 struct discover_device_param {
301 struct list_item list;
304 void discover_device_set_param(struct discover_device *device,
305 const char *name, const char *value)
307 struct discover_device_param *param;
310 list_for_each_entry(&device->params, param, list) {
311 if (!strcmp(param->name, name)) {
320 param = talloc(device, struct discover_device_param);
321 param->name = talloc_strdup(param, name);
322 list_add(&device->params, ¶m->list);
325 list_remove(¶m->list);
329 talloc_free(param->value);
332 param->value = talloc_strdup(param, value);
335 const char *discover_device_get_param(struct discover_device *device,
338 struct discover_device_param *param;
340 list_for_each_entry(&device->params, param, list) {
341 if (!strcmp(param->name, name))
347 static void set_env_variables(const struct config *config)
349 if (config->http_proxy)
350 setenv("http_proxy", config->http_proxy, 1);
352 unsetenv("http_proxy");
354 if (config->https_proxy)
355 setenv("https_proxy", config->https_proxy, 1);
357 unsetenv("https_proxy");
359 /* Reduce noise in the log from LVM listing open file descriptors */
360 setenv("LVM_SUPPRESS_FD_WARNINGS", "1", 1);
363 struct device_handler *device_handler_init(struct discover_server *server,
364 struct waitset *waitset, int dry_run)
366 struct device_handler *handler;
369 handler = talloc_zero(NULL, struct device_handler);
370 handler->server = server;
371 handler->waitset = waitset;
372 handler->dry_run = dry_run;
373 handler->autoboot_enabled = config_autoboot_active(config_get());
375 list_init(&handler->unresolved_boot_options);
377 list_init(&handler->progress);
379 /* set up our mount point base */
380 pb_mkdir_recursive(mount_base());
384 if (config_get()->safe_mode)
387 set_env_variables(config_get());
389 rc = device_handler_init_sources(handler);
391 talloc_free(handler);
398 void device_handler_reinit(struct device_handler *handler)
400 struct discover_boot_option *opt, *tmp;
401 struct ramdisk_device *ramdisk;
402 struct config *config;
405 device_handler_cancel_default(handler);
406 /* Cancel any pending non-default boot */
407 if (handler->pending_boot) {
408 boot_cancel(handler->pending_boot);
409 handler->pending_boot = NULL;
410 handler->pending_boot_is_default = false;
413 /* Cancel any remaining async jobs */
414 process_stop_async_all();
415 pending_network_jobs_cancel();
417 /* free unresolved boot options */
418 list_for_each_entry_safe(&handler->unresolved_boot_options,
421 list_init(&handler->unresolved_boot_options);
423 /* drop all devices */
424 for (i = 0; i < handler->n_devices; i++) {
425 struct discover_device *device = handler->devices[i];
426 discover_server_notify_device_remove(handler->server,
428 ramdisk = device->ramdisk;
429 if (device->requery_waiter)
430 waiter_remove(device->requery_waiter);
432 talloc_free(ramdisk);
435 talloc_free(handler->devices);
436 handler->devices = NULL;
437 handler->n_devices = 0;
438 talloc_free(handler->ramdisks);
439 handler->ramdisks = NULL;
440 handler->n_ramdisks = 0;
442 /* drop any known plugins */
443 for (i = 0; i < handler->n_plugins; i++)
444 talloc_free(handler->plugins[i]);
445 talloc_free(handler->plugins);
446 handler->plugins = NULL;
447 handler->n_plugins = 0;
449 discover_server_notify_plugins_remove(handler->server);
451 set_env_variables(config_get());
453 /* If the safe mode warning was active disable it now */
454 if (config_get()->safe_mode) {
455 config = config_copy(handler, config_get());
456 config->safe_mode = false;
458 discover_server_notify_config(handler->server, config);
461 /* Force rediscovery on SCSI devices */
462 process_run_simple(handler, pb_system_apps.scsi_rescan, NULL);
464 device_handler_reinit_sources(handler);
467 void device_handler_remove(struct device_handler *handler,
468 struct discover_device *device)
470 struct discover_boot_option *opt, *tmp;
473 if (device->requery_waiter)
474 waiter_remove(device->requery_waiter);
476 list_for_each_entry_safe(&device->boot_options, opt, tmp, list) {
477 if (opt == handler->default_boot_option) {
478 pb_log("Default option %s cancelled since device removed",
480 device_handler_cancel_default(handler);
485 for (i = 0; i < handler->n_devices; i++)
486 if (handler->devices[i] == device)
489 if (i == handler->n_devices) {
494 /* Free any unresolved options, as they're currently allocated
495 * against the handler */
496 list_for_each_entry_safe(&handler->unresolved_boot_options,
498 if (opt->device != device)
500 list_remove(&opt->list);
504 /* if this is a network device, we have to unregister it from the
506 if (device->device->type == DEVICE_TYPE_NETWORK)
507 network_unregister_device(handler->network, device);
509 handler->n_devices--;
510 memmove(&handler->devices[i], &handler->devices[i + 1],
511 (handler->n_devices - i) * sizeof(handler->devices[0]));
512 handler->devices = talloc_realloc(handler, handler->devices,
513 struct discover_device *, handler->n_devices);
515 if (device->notified)
516 discover_server_notify_device_remove(handler->server,
522 void device_handler_status(struct device_handler *handler,
523 struct status *status)
525 pb_debug("%s: %s\n", __func__, status->message);
526 discover_server_notify_boot_status(handler->server, status);
529 static void _device_handler_vstatus(struct device_handler *handler,
530 enum status_type type, const char *fmt, va_list ap)
532 struct status status;
535 status.message = talloc_vasprintf(handler, fmt, ap);
536 status.backlog = false;
538 device_handler_status(handler, &status);
540 talloc_free(status.message);
543 static void _device_handler_vdevstatus(struct device_handler *handler,
544 struct discover_device *device, enum status_type type,
545 const char *fmt, va_list ap)
549 msg = talloc_asprintf(handler, "[%s] %s",
550 device ? device->device->id : "unknown", fmt);
551 _device_handler_vstatus(handler, type, msg, ap);
555 void device_handler_status_dev_info(struct device_handler *handler,
556 struct discover_device *dev, const char *fmt, ...)
561 _device_handler_vdevstatus(handler, dev, STATUS_INFO, fmt, ap);
565 void device_handler_status_dev_err(struct device_handler *handler,
566 struct discover_device *dev, const char *fmt, ...)
571 _device_handler_vdevstatus(handler, dev, STATUS_ERROR, fmt, ap);
575 void device_handler_status_info(struct device_handler *handler,
576 const char *fmt, ...)
581 _device_handler_vstatus(handler, STATUS_INFO, fmt, ap);
585 void device_handler_status_err(struct device_handler *handler,
586 const char *fmt, ...)
591 _device_handler_vstatus(handler, STATUS_ERROR, fmt, ap);
595 void device_handler_status_download(struct device_handler *handler,
596 const struct process_info *procinfo,
597 unsigned int percentage, unsigned int size, char suffix)
599 struct progress_info *p, *progress = NULL;
600 uint64_t current_converted, current = 0;
601 const char *units = " kMGTP";
602 unsigned long size_bytes;
608 list_for_each_entry(&handler->progress, p, list)
609 if (p->procinfo == procinfo)
613 pb_log("Registering new progress struct\n");
614 progress = talloc_zero(handler, struct progress_info);
616 pb_log("Failed to allocate room for progress struct\n");
619 progress->procinfo = procinfo;
620 list_add(&handler->progress, &progress->list);
621 handler->n_progress++;
625 for (i = 0; i < strlen(units); i++) {
626 if (units[i] == suffix)
630 if (i >= strlen(units)) {
631 pb_log("Couldn't recognise suffix '%c'\n", suffix);
638 progress->percentage = percentage;
639 progress->size = size_bytes;
642 * Aggregate the info we have and update status. If a progress struct
643 * has zero for both percentage and size we assume progress information
644 * is unavailable and fall back to a generic progress message.
646 list_for_each_entry(&handler->progress, p, list) {
649 if (!p->percentage || !p->size) {
650 update = talloc_asprintf(handler,
651 _("%u downloads in progress..."),
652 handler->n_progress);
658 t = (100 * c) / p->percentage;
665 current_converted = current;
666 while (current_converted >= 1000) {
667 current_converted >>= 10;
670 update = talloc_asprintf(handler,
671 _("%u %s downloading: %.0f%% - %" PRIu64 "%cB"),
673 ngettext("item", "items", handler->n_progress),
674 (current / total) * 100, current_converted,
679 pb_log_fn("failed to allocate new status\n");
681 device_handler_status_info(handler, "%s\n", update);
686 static void device_handler_plugin_scan_device(struct device_handler *handler,
687 struct discover_device *dev)
691 pb_debug("Scanning %s for plugin files\n", dev->device->id);
693 rc = process_run_simple(handler, pb_system_apps.pb_plugin,
694 "scan", dev->mount_path,
697 pb_log("Error from pb-plugin scan %s\n",
701 void device_handler_status_download_remove(struct device_handler *handler,
702 struct process_info *procinfo)
704 struct progress_info *p, *tmp;
706 list_for_each_entry_safe(&handler->progress, p, tmp, list)
707 if (p->procinfo == procinfo) {
708 list_remove(&p->list);
710 handler->n_progress--;
714 static void device_handler_boot_status_cb(void *arg, struct status *status)
716 struct device_handler *handler = arg;
718 /* boot had failed; update handler state to allow a new default if one
721 if (status->type == STATUS_ERROR) {
722 handler->pending_boot = NULL;
723 handler->default_boot_option = NULL;
726 device_handler_status(handler, status);
729 static void countdown_status(struct device_handler *handler,
730 struct discover_boot_option *opt, unsigned int sec)
732 struct status status;
734 status.type = STATUS_INFO;
735 status.message = talloc_asprintf(handler,
736 _("Booting in %d sec: [%s] %s"), sec,
737 opt->device->device->id, opt->option->name);
738 status.backlog = false;
740 device_handler_status(handler, &status);
742 talloc_free(status.message);
745 static int default_timeout(void *arg)
747 struct device_handler *handler = arg;
748 struct discover_boot_option *opt;
750 if (!handler->default_boot_option)
753 if (handler->pending_boot)
756 opt = handler->default_boot_option;
758 if (handler->sec_to_boot) {
759 countdown_status(handler, opt, handler->sec_to_boot);
760 handler->sec_to_boot--;
761 handler->timeout_waiter = waiter_register_timeout(
762 handler->waitset, 1000,
763 default_timeout, handler);
767 handler->timeout_waiter = NULL;
769 pb_log("Timeout expired, booting default option %s\n", opt->option->id);
773 handler->pending_boot = boot(handler, handler->default_boot_option,
774 NULL, handler->dry_run, device_handler_boot_status_cb,
776 handler->pending_boot_is_default = true;
781 enum ipmi_bootdev ipmi_type;
782 enum device_type device_type;
783 } device_type_map[] = {
784 { IPMI_BOOTDEV_NETWORK, DEVICE_TYPE_NETWORK },
785 { IPMI_BOOTDEV_DISK, DEVICE_TYPE_DISK },
786 { IPMI_BOOTDEV_DISK, DEVICE_TYPE_USB },
787 { IPMI_BOOTDEV_CDROM, DEVICE_TYPE_OPTICAL },
790 static bool ipmi_device_type_matches(enum ipmi_bootdev ipmi_type,
791 enum device_type device_type)
795 for (i = 0; i < ARRAY_SIZE(device_type_map); i++) {
796 if (device_type_map[i].device_type == device_type)
797 return device_type_map[i].ipmi_type == ipmi_type;
803 static bool autoboot_option_matches(struct autoboot_option *opt,
804 struct discover_device *dev)
806 if (opt->boot_type == BOOT_DEVICE_UUID)
807 if (!strcmp(opt->uuid, dev->uuid))
810 if (opt->boot_type == BOOT_DEVICE_TYPE)
811 if (opt->type == dev->device->type ||
812 opt->type == DEVICE_TYPE_ANY)
818 static int autoboot_option_priority(const struct config *config,
819 struct discover_boot_option *opt)
821 struct autoboot_option *auto_opt;
824 for (i = 0; i < config->n_autoboot_opts; i++) {
825 auto_opt = &config->autoboot_opts[i];
826 if (autoboot_option_matches(auto_opt, opt->device))
827 return DEFAULT_PRIORITY_LOCAL_FIRST + i;
834 * We have different priorities to resolve conflicts between boot options that
835 * report to be the default for their device. This function assigns a priority
838 static enum default_priority default_option_priority(
839 struct device_handler *handler,
840 struct discover_boot_option *opt)
842 const struct config *config;
844 /* Temporary user-provided autoboot options have highest priority */
845 if (handler->temp_autoboot) {
846 if (autoboot_option_matches(handler->temp_autoboot,
848 return DEFAULT_PRIORITY_TEMP_USER;
850 pb_debug("handler: disabled default priority due to "
851 "temporary user override\n");
852 return DEFAULT_PRIORITY_DISABLED;
855 config = config_get();
857 /* Next highest priority to IPMI-configured boot options. If we have an
858 * IPMI bootdev configuration set, then we don't allow any other
860 if (config->ipmi_bootdev) {
861 bool ipmi_match = ipmi_device_type_matches(config->ipmi_bootdev,
862 opt->device->device->type);
864 return DEFAULT_PRIORITY_REMOTE;
866 pb_debug("handler: disabled default priority due to "
867 "non-matching IPMI type %x\n",
868 config->ipmi_bootdev);
869 return DEFAULT_PRIORITY_DISABLED;
872 /* Next, try to match the option against the user-defined autoboot
873 * options, either by device UUID or type. */
874 if (config->n_autoboot_opts) {
875 int boot_match = autoboot_option_priority(config, opt);
879 /* If there is no specific boot order, boot any device */
880 return DEFAULT_PRIORITY_LOCAL_FIRST;
883 /* If the option didn't match any entry in the array, it is disabled */
884 pb_debug("handler: disabled default priority due to "
885 "non-matching UUID or type\n");
886 return DEFAULT_PRIORITY_DISABLED;
889 static void set_default(struct device_handler *handler,
890 struct discover_boot_option *opt)
892 enum default_priority cur_prio, new_prio;
894 if (!handler->autoboot_enabled)
897 pb_debug("handler: new default option: %s\n", opt->option->id);
899 new_prio = default_option_priority(handler, opt);
901 /* Anything outside our range prevents a default boot */
902 if (new_prio >= DEFAULT_PRIORITY_DISABLED)
905 pb_debug("handler: calculated priority %d\n", new_prio);
907 /* Resolve any conflicts: if we have a new default option, it only
908 * replaces the current if it has a higher priority. */
909 if (handler->default_boot_option) {
911 cur_prio = handler->default_boot_option_priority;
913 if (new_prio < cur_prio) {
914 pb_log("handler: new prio %d beats "
915 "old prio %d for %s\n",
917 handler->default_boot_option
919 handler->default_boot_option = opt;
920 handler->default_boot_option_priority = new_prio;
921 /* extend the timeout a little, so the user sees some
922 * indication of the change */
923 handler->sec_to_boot += 2;
929 handler->sec_to_boot = config_get()->autoboot_timeout_sec;
930 handler->default_boot_option = opt;
931 handler->default_boot_option_priority = new_prio;
933 pb_log("handler: boot option %s set as default, timeout %u sec.\n",
934 opt->option->id, handler->sec_to_boot);
936 default_timeout(handler);
939 static char *autoboot_option_desc(void *ctx, const struct autoboot_option *opt)
941 const char *type, *val;
943 if (opt->boot_type == BOOT_DEVICE_TYPE) {
944 type = _("device type");
945 val = device_type_display_name(opt->type);
946 } else if (opt->boot_type == BOOT_DEVICE_UUID) {
947 type = _("device UUID");
950 type = _("unknown specifier");
954 return talloc_asprintf(ctx, "%s = %s", type, val);
957 void device_handler_apply_temp_autoboot(struct device_handler *handler,
958 struct autoboot_option *opt)
963 handler->temp_autoboot = talloc_steal(handler, opt);
965 desc = autoboot_option_desc(handler, opt);
966 device_handler_status_info(handler,
967 _("Applying temporary autoboot override: %s"),
971 if (!handler->autoboot_enabled)
974 if (!handler->default_boot_option)
977 if (autoboot_option_matches(opt, handler->default_boot_option->device))
980 /* cancel the default, and rescan available options */
981 device_handler_cancel_default(handler);
983 handler->autoboot_enabled = true;
985 for (i = 0; i < handler->n_devices; i++) {
986 struct discover_device *dev = handler->devices[i];
987 struct discover_boot_option *boot_opt;
989 if (!autoboot_option_matches(opt, dev))
992 list_for_each_entry(&dev->boot_options, boot_opt, list) {
993 if (boot_opt->option->is_default) {
994 set_default(handler, boot_opt);
1001 static bool resource_is_resolved(struct resource *res)
1003 return !res || res->resolved;
1006 /* We only use this in an assert, which will disappear if we're compiling
1007 * with NDEBUG, so we need the 'used' attribute for these builds */
1008 static bool __attribute__((used)) boot_option_is_resolved(
1009 struct discover_boot_option *opt)
1011 return resource_is_resolved(opt->boot_image) &&
1012 resource_is_resolved(opt->initrd) &&
1013 resource_is_resolved(opt->dtb) &&
1014 resource_is_resolved(opt->args_sig_file) &&
1015 resource_is_resolved(opt->icon);
1018 static bool resource_resolve(struct resource *res, const char *name,
1019 struct discover_boot_option *opt,
1020 struct device_handler *handler)
1022 struct parser *parser = opt->source;
1024 if (resource_is_resolved(res))
1027 pb_debug("Attempting to resolve resource %s->%s with parser %s\n",
1028 opt->option->id, name, parser->name);
1029 parser->resolve_resource(handler, res);
1031 return res->resolved;
1034 static bool boot_option_resolve(struct discover_boot_option *opt,
1035 struct device_handler *handler)
1037 return resource_resolve(opt->boot_image, "boot_image", opt, handler) &&
1038 resource_resolve(opt->initrd, "initrd", opt, handler) &&
1039 resource_resolve(opt->dtb, "dtb", opt, handler) &&
1040 resource_resolve(opt->args_sig_file, "args_sig_file", opt,
1042 resource_resolve(opt->icon, "icon", opt, handler);
1045 static void boot_option_finalise(struct device_handler *handler,
1046 struct discover_boot_option *opt)
1048 assert(boot_option_is_resolved(opt));
1050 /* check that the parsers haven't set any of the final data */
1051 assert(!opt->option->boot_image_file);
1052 assert(!opt->option->initrd_file);
1053 assert(!opt->option->dtb_file);
1054 assert(!opt->option->icon_file);
1055 assert(!opt->option->device_id);
1056 assert(!opt->option->args_sig_file);
1058 if (opt->boot_image)
1059 opt->option->boot_image_file = opt->boot_image->url->full;
1061 opt->option->initrd_file = opt->initrd->url->full;
1063 opt->option->dtb_file = opt->dtb->url->full;
1065 opt->option->icon_file = opt->icon->url->full;
1066 if (opt->args_sig_file)
1067 opt->option->args_sig_file = opt->args_sig_file->url->full;
1069 opt->option->device_id = opt->device->device->id;
1071 if (opt->option->is_default)
1072 set_default(handler, opt);
1075 static void notify_boot_option(struct device_handler *handler,
1076 struct discover_boot_option *opt)
1078 struct discover_device *dev = opt->device;
1081 discover_server_notify_device_add(handler->server,
1082 opt->device->device);
1083 dev->notified = true;
1084 discover_server_notify_boot_option_add(handler->server, opt->option);
1087 static void process_boot_option_queue(struct device_handler *handler)
1089 struct discover_boot_option *opt, *tmp;
1091 list_for_each_entry_safe(&handler->unresolved_boot_options,
1094 pb_debug("queue: attempting resolution for %s\n",
1097 if (!boot_option_resolve(opt, handler))
1100 pb_debug("\tresolved!\n");
1102 list_remove(&opt->list);
1103 list_add_tail(&opt->device->boot_options, &opt->list);
1104 talloc_steal(opt->device, opt);
1105 boot_option_finalise(handler, opt);
1106 notify_boot_option(handler, opt);
1110 struct discover_context *device_handler_discover_context_create(
1111 struct device_handler *handler,
1112 struct discover_device *device)
1114 struct discover_context *ctx;
1116 ctx = talloc_zero(handler, struct discover_context);
1117 ctx->handler = handler;
1118 ctx->device = device;
1119 list_init(&ctx->boot_options);
1124 void device_handler_add_device(struct device_handler *handler,
1125 struct discover_device *device)
1127 handler->n_devices++;
1128 handler->devices = talloc_realloc(handler, handler->devices,
1129 struct discover_device *, handler->n_devices);
1130 handler->devices[handler->n_devices - 1] = device;
1132 if (device->device->type == DEVICE_TYPE_NETWORK)
1133 network_register_device(handler->network, device);
1136 void device_handler_add_ramdisk(struct device_handler *handler,
1139 struct ramdisk_device *dev;
1145 for (i = 0; i < handler->n_ramdisks; i++)
1146 if (!strcmp(handler->ramdisks[i]->path, path))
1149 dev = talloc_zero(handler, struct ramdisk_device);
1151 pb_log("Failed to allocate memory to track %s\n", path);
1155 dev->path = talloc_strdup(handler, path);
1157 handler->ramdisks = talloc_realloc(handler, handler->ramdisks,
1158 struct ramdisk_device *,
1159 handler->n_ramdisks + 1);
1160 if (!handler->ramdisks) {
1161 pb_log("Failed to reallocate memory"
1162 "- ramdisk tracking inconsistent!\n");
1166 handler->ramdisks[i] = dev;
1167 i = handler->n_ramdisks++;
1170 struct ramdisk_device *device_handler_get_ramdisk(
1171 struct device_handler *handler)
1177 /* Check if free ramdisk exists */
1178 for (i = 0; i < handler->n_ramdisks; i++)
1179 if (!handler->ramdisks[i]->snapshot &&
1180 !handler->ramdisks[i]->origin &&
1181 !handler->ramdisks[i]->base)
1182 return handler->ramdisks[i];
1184 /* Otherwise create a new one */
1185 name = talloc_asprintf(handler, "/dev/ram%d",
1186 handler->n_ramdisks);
1188 pb_debug("Failed to allocate memory to name /dev/ram%d",
1189 handler->n_ramdisks);
1193 id = makedev(1, handler->n_ramdisks);
1194 if (mknod(name, S_IFBLK, id)) {
1195 if (errno == EEXIST) {
1196 /* We haven't yet received updates for existing
1197 * ramdisks - add and use this one */
1198 pb_debug("Using untracked ramdisk %s\n", name);
1200 pb_log("Failed to create new ramdisk %s: %s\n",
1201 name, strerror(errno));
1205 device_handler_add_ramdisk(handler, name);
1208 return handler->ramdisks[i];
1211 void device_handler_release_ramdisk(struct discover_device *device)
1213 struct ramdisk_device *ramdisk = device->ramdisk;
1215 talloc_free(ramdisk->snapshot);
1216 talloc_free(ramdisk->origin);
1217 talloc_free(ramdisk->base);
1219 ramdisk->snapshot = ramdisk->origin = ramdisk->base = NULL;
1220 ramdisk->sectors = 0;
1222 device->ramdisk = NULL;
1225 /* Start discovery on a hotplugged device. The device will be in our devices
1226 * array, but has only just been initialised by the hotplug source.
1228 int device_handler_discover(struct device_handler *handler,
1229 struct discover_device *dev)
1231 struct discover_context *ctx;
1234 device_handler_status_dev_info(handler, dev,
1236 * TRANSLATORS: this string will be passed the type of the
1237 * device (eg "disk" or "network"), which will be translated
1240 _("Processing new %s device"),
1241 device_type_display_name(dev->device->type));
1243 /* create our context */
1244 ctx = device_handler_discover_context_create(handler, dev);
1246 rc = mount_device(dev);
1250 /* add this device to our system info */
1251 system_info_register_blockdev(dev->device->id, dev->uuid,
1254 /* run the parsers. This will populate the ctx's boot_option list. */
1255 iterate_parsers(ctx);
1257 /* add discovered stuff to the handler */
1258 device_handler_discover_context_commit(handler, ctx);
1260 process_boot_option_queue(handler);
1262 /* Check this device for pb-plugins */
1263 device_handler_plugin_scan_device(handler, dev);
1265 talloc_unlink(handler, ctx);
1270 struct requery_data {
1271 struct device_handler *handler;
1272 struct discover_device *device;
1275 static int device_handler_requery_timeout_fn(void *data)
1277 struct discover_boot_option *opt, *tmp;
1278 struct requery_data *rqd = data;
1279 struct device_handler *handler;
1280 struct discover_device *device;
1282 handler = rqd->handler;
1283 device = rqd->device;
1287 /* network_requery_device may re-add a timeout, so clear the device
1288 * waiter here, so we can potentially start a new one. */
1289 device->requery_waiter = NULL;
1291 /* We keep the device around, but get rid of the parsed boot
1292 * options on that device. That involves delaring out the lists,
1293 * and potentially cancelling a default.
1295 list_for_each_entry_safe(&handler->unresolved_boot_options,
1297 if (opt->device != device)
1299 list_remove(&opt->list);
1303 list_for_each_entry_safe(&device->boot_options, opt, tmp, list) {
1304 if (opt == handler->default_boot_option) {
1305 pb_log("Default option %s cancelled since device is being requeried",
1307 device_handler_cancel_default(handler);
1309 list_remove(&opt->list);
1313 discover_server_notify_device_remove(handler->server, device->device);
1314 device->notified = false;
1316 network_requery_device(handler->network, device);
1321 /* Schedule a requery in timeout (seconds).
1323 * Special values of timeout:
1327 void device_handler_start_requery_timeout( struct device_handler *handler,
1328 struct discover_device *dev, int timeout)
1330 struct requery_data *rqd;
1332 if (dev->requery_waiter)
1336 timeout = default_rescan_timeout;
1337 else if (timeout == 0)
1340 rqd = talloc(dev, struct requery_data);
1341 rqd->handler = handler;
1344 pb_debug("starting requery timeout for device %s, in %d sec\n",
1345 dev->device->id, timeout);
1347 dev->requery_waiter = waiter_register_timeout(handler->waitset,
1348 timeout * 1000, device_handler_requery_timeout_fn, rqd);
1351 static int event_requery_timeout(struct event *event)
1361 str = event_get_param(event, "reboottime");
1365 x = strtoul(str, &endp, 0);
1373 /* Incoming dhcp event */
1374 int device_handler_dhcp(struct device_handler *handler,
1375 struct discover_device *dev, struct event *event)
1377 struct discover_context *ctx;
1380 if (event_get_param(event, "ipv6"))
1381 ip = event_get_param(event, "ipv6");
1383 ip = event_get_param(event, "ip");
1385 device_handler_status_dev_info(handler, dev,
1386 _("Processing DHCP lease response (ip: %s)"), ip);
1388 pending_network_jobs_start();
1390 /* create our context */
1391 ctx = device_handler_discover_context_create(handler, dev);
1392 talloc_steal(ctx, event);
1395 device_handler_start_requery_timeout(handler, dev,
1396 event_requery_timeout(event));
1398 iterate_parsers(ctx);
1400 device_handler_discover_context_commit(handler, ctx);
1402 talloc_unlink(handler, ctx);
1407 static struct discover_boot_option *find_boot_option_by_id(
1408 struct device_handler *handler, const char *id)
1412 for (i = 0; i < handler->n_devices; i++) {
1413 struct discover_device *dev = handler->devices[i];
1414 struct discover_boot_option *opt;
1416 list_for_each_entry(&dev->boot_options, opt, list)
1417 if (!strcmp(opt->option->id, id))
1424 void device_handler_boot(struct device_handler *handler,
1425 struct boot_command *cmd)
1427 struct discover_boot_option *opt = NULL;
1429 if (cmd->option_id && strlen(cmd->option_id))
1430 opt = find_boot_option_by_id(handler, cmd->option_id);
1432 if (handler->pending_boot)
1433 boot_cancel(handler->pending_boot);
1435 platform_pre_boot();
1437 handler->pending_boot = boot(handler, opt, cmd, handler->dry_run,
1438 device_handler_boot_status_cb, handler);
1439 handler->pending_boot_is_default = false;
1442 void device_handler_cancel_default(struct device_handler *handler)
1444 if (handler->timeout_waiter)
1445 waiter_remove(handler->timeout_waiter);
1447 handler->timeout_waiter = NULL;
1448 handler->autoboot_enabled = false;
1450 /* we only send status if we had a default boot option queued */
1451 if (!handler->default_boot_option)
1454 pb_log("Cancelling default boot option\n");
1456 if (handler->pending_boot && handler->pending_boot_is_default) {
1457 boot_cancel(handler->pending_boot);
1458 handler->pending_boot = NULL;
1459 handler->pending_boot_is_default = false;
1462 handler->default_boot_option = NULL;
1464 device_handler_status_info(handler, _("Default boot cancelled"));
1467 void device_handler_update_config(struct device_handler *handler,
1468 struct config *config)
1472 rc = config_set(config);
1476 discover_server_notify_config(handler->server, config);
1477 device_handler_update_lang(config->lang);
1478 device_handler_reinit(handler);
1481 static char *device_from_addr(void *ctx, struct pb_url *url)
1483 char *ipaddr, *buf, *tok, *dev = NULL;
1485 const char *delim = " ";
1486 struct sockaddr_in *ipv4;
1487 struct sockaddr_in6 *ipv6;
1488 struct addrinfo *res;
1492 /* Confirm url->host is either a valid hostname, or a
1493 * valid IPv4 or IPv6 address */
1494 rc = getaddrinfo(url->host, NULL, NULL, &res);
1496 pb_debug("%s: Invalid URL\n",__func__);
1500 switch (res->ai_family) {
1501 case AF_INET: /* ipv4 */
1502 ipaddr = talloc_array(ctx,char,INET_ADDRSTRLEN);
1503 ipv4 = (struct sockaddr_in *) res->ai_addr;
1504 inet_ntop(AF_INET, &(ipv4->sin_addr), ipaddr, INET_ADDRSTRLEN);
1507 case AF_INET6: /* ipv6 */
1508 ipaddr = talloc_array(ctx,char,INET6_ADDRSTRLEN);
1509 ipv6 = (struct sockaddr_in6 *) res->ai_addr;
1510 inet_ntop(AF_INET6, &(ipv6->sin6_addr), ipaddr, INET6_ADDRSTRLEN);
1513 default: /* error */
1519 const char *argv[] = {
1521 ipv6_route ? "-6" : "-4",
1522 "route", "show", "to", "match",
1527 p = process_create(ctx);
1529 p->path = pb_system_apps.ip;
1531 p->keep_stdout = true;
1533 rc = process_run_sync(p);
1535 if (rc || p->exit_status) {
1536 /* ip has complained for some reason; most likely
1537 * there is no route to the host - bail out */
1538 pb_debug("%s: `ip` returns non-zero exit status\n", __func__);
1539 pb_debug("ip buf: %s\n", p->stdout_buf);
1544 buf = p->stdout_buf;
1545 /* If a route is found, ip-route output will be of the form
1546 * "... dev DEVNAME ... " */
1547 tok = strtok(buf, delim);
1549 if (!strcmp(tok, "dev")) {
1550 tok = strtok(NULL, delim);
1551 dev = talloc_strdup(ctx, tok);
1554 tok = strtok(NULL, delim);
1559 pb_debug("%s: Found interface '%s'\n", __func__,dev);
1563 static void process_url_cb(struct load_url_result *result, void *data)
1565 struct device_handler *handler;
1566 struct discover_context *ctx;
1567 struct discover_device *dev;
1568 struct event *event = data;
1571 if (result->status != LOAD_OK) {
1572 pb_log_fn("Load failed for %s\n", result->url->full);
1579 handler = talloc_parent(event);
1583 event->device = device_from_addr(event, result->url);
1584 if (!event->device) {
1585 pb_log("Downloaded a file but can't find its interface - pretending it was local\n");
1586 event->device = talloc_asprintf(event, "local");
1589 mac = event_get_param(event, "mac");
1590 char *url = talloc_asprintf(event, "file://%s", result->local);
1591 event_set_param(event, "pxeconffile-local", url);
1593 dev = discover_device_create(handler, mac, event->device);
1594 ctx = device_handler_discover_context_create(handler, dev);
1595 talloc_steal(ctx, event);
1598 iterate_parsers(ctx);
1600 device_handler_discover_context_commit(handler, ctx);
1602 talloc_unlink(handler, ctx);
1605 void device_handler_process_url(struct device_handler *handler,
1606 const char *url, const char *mac, const char *ip)
1608 struct discover_context *ctx;
1609 struct discover_device *dev;
1610 bool allow_async = false;
1611 struct pb_url *pb_url;
1612 struct event *event;
1614 event = talloc_zero(handler, struct event);
1615 event->type = EVENT_TYPE_USER;
1616 event->action = EVENT_ACTION_URL;
1618 pb_url = pb_url_parse(event, url);
1619 if (!pb_url || (pb_url->scheme != pb_url_file && !pb_url->host)) {
1620 device_handler_status_err(handler, _("Invalid config URL!"));
1625 if (url[strlen(url) - 1] == '/') {
1626 event_set_param(event, "pxepathprefix", url);
1627 event_set_param(event, "mac", mac);
1628 event_set_param(event, "ip", ip);
1629 event->device = device_from_addr(event, pb_url);
1630 if (!event->device) {
1631 device_handler_status_err(handler,
1632 _("Unable to route to host %s"),
1638 event_set_param(event, "pxeconffile", url);
1642 if (pb_url->scheme == pb_url_file)
1643 event->device = talloc_asprintf(event, "local");
1644 else if (allow_async) {
1645 /* If file is remote load asynchronously before passing to
1646 * parser. This allows us to wait for network to be available */
1647 if (!load_url_async(handler, pb_url, process_url_cb, event,
1649 pb_log("Failed to load url %s\n", pb_url->full);
1650 device_handler_status_err(handler, _("Failed to load URL!"));
1656 /* If path is local we can parse straight away */
1658 dev = discover_device_create(handler, mac, event->device);
1659 if (pb_url->scheme == pb_url_file)
1660 dev->device->type = DEVICE_TYPE_ANY;
1661 ctx = device_handler_discover_context_create(handler, dev);
1662 talloc_steal(ctx, event);
1665 iterate_parsers(ctx);
1667 device_handler_discover_context_commit(handler, ctx);
1669 talloc_unlink(handler, ctx);
1672 static void plugin_install_cb(struct process *process)
1674 struct device_handler *handler = process->data;
1677 pb_log_fn("Missing data!\n");
1681 handler->plugin_installing = false;
1682 if (process->exit_status) {
1683 device_handler_status_err(handler, "Plugin failed to install!");
1684 pb_log("Failed to install plugin:\n%s\n", process->stdout_buf);
1688 void device_handler_install_plugin(struct device_handler *handler,
1689 const char *plugin_file)
1694 if (handler->plugin_installing) {
1695 pb_log("Plugin install cancelled - install already running");
1699 p = process_create(handler);
1701 pb_log("install_plugin: Failed to create process\n");
1705 const char *argv[] = {
1706 pb_system_apps.pb_plugin,
1713 p->path = pb_system_apps.pb_plugin;
1715 p->exit_cb = plugin_install_cb;
1717 p->keep_stdout = true;
1719 result = process_run_async(p);
1722 device_handler_status_err(handler, "Could not install plugin");
1724 handler->plugin_installing = true;
1727 #ifndef PETITBOOT_TEST
1730 * context_commit - Commit a temporary discovery context to the handler,
1731 * and notify the clients about any new options / devices
1733 void device_handler_discover_context_commit(struct device_handler *handler,
1734 struct discover_context *ctx)
1736 struct discover_device *dev = ctx->device;
1737 struct discover_boot_option *opt, *tmp;
1739 if (!device_lookup_by_uuid(handler, dev->uuid))
1740 device_handler_add_device(handler, dev);
1742 /* move boot options from the context to the device */
1743 list_for_each_entry_safe(&ctx->boot_options, opt, tmp, list) {
1744 list_remove(&opt->list);
1746 /* All boot options need at least a kernel image */
1747 if (!opt->boot_image || !opt->boot_image->url) {
1748 pb_log("boot option %s is missing boot image, ignoring\n",
1754 if (boot_option_resolve(opt, handler)) {
1755 pb_log("boot option %s is resolved, "
1756 "sending to clients\n",
1758 list_add_tail(&dev->boot_options, &opt->list);
1759 talloc_steal(dev, opt);
1760 boot_option_finalise(handler, opt);
1761 notify_boot_option(handler, opt);
1763 if (!opt->source->resolve_resource) {
1764 pb_log("parser %s gave us an unresolved "
1765 "resource (%s), but no way to "
1767 opt->source->name, opt->option->id);
1770 pb_log("boot option %s is unresolved, "
1771 "adding to queue\n",
1773 list_add(&handler->unresolved_boot_options,
1775 talloc_steal(handler, opt);
1781 void device_handler_add_plugin_option(struct device_handler *handler,
1782 struct plugin_option *opt)
1784 struct plugin_option *tmp;
1787 for (i = 0; i < handler->n_plugins; i++) {
1788 tmp = handler->plugins[i];
1789 /* If both id and version match, ignore */
1790 if (strncmp(opt->id, tmp->id, strlen(opt->id)) == 0 &&
1791 strcmp(opt->version, tmp->version) == 0) {
1792 pb_log("discover: Plugin '%s' already exists, ignoring\n",
1798 handler->plugins = talloc_realloc(handler, handler->plugins,
1799 struct plugin_option *, handler->n_plugins + 1);
1800 if (!handler->plugins) {
1801 pb_log("Failed to allocate memory for new plugin\n");
1802 handler->n_plugins = 0;
1806 handler->plugins[handler->n_plugins++] = opt;
1807 discover_server_notify_plugin_option_add(handler->server, opt);
1810 static void device_handler_update_lang(const char *lang)
1812 const char *cur_lang;
1817 cur_lang = setlocale(LC_ALL, NULL);
1818 if (cur_lang && !strcmp(cur_lang, lang))
1821 setlocale(LC_ALL, lang);
1824 static int device_handler_init_sources(struct device_handler *handler)
1826 /* init our device sources: udev, network and user events */
1827 handler->user_event = user_event_init(handler, handler->waitset);
1828 if (!handler->user_event)
1831 handler->network = network_init(handler, handler->waitset,
1833 if (!handler->network)
1836 handler->udev = udev_init(handler, handler->waitset);
1843 static void device_handler_reinit_sources(struct device_handler *handler)
1845 /* if we haven't initialised sources previously (becuase we started in
1846 * safe mode), then init once here. */
1847 if (!(handler->udev || handler->network || handler->user_event)) {
1848 device_handler_init_sources(handler);
1852 system_info_reinit();
1854 network_shutdown(handler->network);
1855 handler->network = network_init(handler, handler->waitset,
1858 udev_reinit(handler->udev);
1861 static inline const char *get_device_path(struct discover_device *dev)
1863 return dev->ramdisk ? dev->ramdisk->snapshot : dev->device_path;
1866 static char *check_subvols(struct discover_device *dev)
1868 const char *fstype = discover_device_get_param(dev, "ID_FS_TYPE");
1873 if (strncmp(fstype, "btrfs", strlen("btrfs")))
1874 return dev->mount_path;
1876 /* On btrfs a device's root may be under a subvolume path */
1877 path = join_paths(dev, dev->mount_path, "@");
1878 rc = stat(path, &sb);
1879 if (!rc && S_ISDIR(sb.st_mode)) {
1880 pb_debug("Using '%s' for btrfs root path\n", path);
1885 return dev->mount_path;
1888 static bool check_existing_mount(struct discover_device *dev)
1890 struct stat devstat, mntstat;
1891 const char *device_path;
1896 device_path = get_device_path(dev);
1898 rc = stat(device_path, &devstat);
1900 pb_debug("%s: stat failed: %s\n", __func__, strerror(errno));
1904 if (!S_ISBLK(devstat.st_mode)) {
1905 pb_debug("%s: %s isn't a block device?\n", __func__,
1910 fp = fopen("/proc/self/mounts", "r");
1913 mnt = getmntent(fp);
1917 if (!mnt->mnt_fsname || mnt->mnt_fsname[0] != '/')
1920 rc = stat(mnt->mnt_fsname, &mntstat);
1924 if (!S_ISBLK(mntstat.st_mode))
1927 if (mntstat.st_rdev == devstat.st_rdev) {
1928 dev->mount_path = talloc_strdup(dev, mnt->mnt_dir);
1929 dev->root_path = check_subvols(dev);
1930 dev->mounted_rw = !!hasmntopt(mnt, "rw");
1931 dev->mounted = true;
1932 dev->unmount = false;
1934 pb_debug("%s: %s is already mounted (r%c) at %s\n",
1935 __func__, dev->device_path,
1936 dev->mounted_rw ? 'w' : 'o',
1948 * Attempt to mount a filesystem safely, while handling certain filesytem-
1951 static int try_mount(const char *device_path, const char *mount_path,
1952 const char *fstype, unsigned long flags,
1955 const char *fs, *safe_opts;
1958 /* Mount ext3 as ext4 instead so 'norecovery' can be used */
1959 if (strncmp(fstype, "ext3", strlen("ext3")) == 0) {
1960 pb_debug("Mounting ext3 filesystem as ext4\n");
1965 if (strncmp(fs, "xfs", strlen("xfs")) == 0 ||
1966 strncmp(fs, "ext4", strlen("ext4")) == 0)
1967 safe_opts = "norecovery";
1972 /* If no snapshot is available don't attempt recovery */
1974 return mount(device_path, mount_path, fs, flags, safe_opts);
1976 rc = mount(device_path, mount_path, fs, flags, NULL);
1981 /* Mounting failed; some filesystems will fail to mount if a recovery
1982 * journal exists (eg. cross-endian XFS), so try again with norecovery
1983 * where that option is available.
1984 * If mounting read-write just return the error as norecovery is not a
1986 if ((flags & MS_RDONLY) != MS_RDONLY || !safe_opts)
1990 return mount(device_path, mount_path, fs, flags, safe_opts);
1993 static int mount_device(struct discover_device *dev)
1995 const char *fstype, *device_path;
1998 if (!dev->device_path)
2004 if (check_existing_mount(dev))
2007 fstype = discover_device_get_param(dev, "ID_FS_TYPE");
2011 dev->mount_path = join_paths(dev, mount_base(),
2014 if (pb_mkdir_recursive(dev->mount_path)) {
2015 pb_log("couldn't create mount directory %s: %s\n",
2016 dev->mount_path, strerror(errno));
2020 device_path = get_device_path(dev);
2022 pb_log("mounting device %s read-only\n", dev->device_path);
2023 rc = try_mount(device_path, dev->mount_path, fstype,
2024 MS_RDONLY | MS_SILENT, dev->ramdisk);
2026 /* If mount fails clean up any snapshot and try again */
2027 if (rc && dev->ramdisk) {
2028 pb_log("couldn't mount snapshot for %s: mount failed: %s\n",
2029 device_path, strerror(errno));
2030 pb_log("falling back to actual device\n");
2032 devmapper_destroy_snapshot(dev);
2034 device_path = get_device_path(dev);
2035 pb_log("mounting device %s read-only\n", dev->device_path);
2036 rc = try_mount(device_path, dev->mount_path, fstype,
2037 MS_RDONLY | MS_SILENT, dev->ramdisk);
2041 dev->mounted = true;
2042 dev->mounted_rw = false;
2043 dev->unmount = true;
2044 dev->root_path = check_subvols(dev);
2048 pb_log("couldn't mount device %s: mount failed: %s\n",
2049 device_path, strerror(errno));
2051 pb_rmdir_recursive(mount_base(), dev->mount_path);
2053 talloc_free(dev->mount_path);
2054 dev->mount_path = NULL;
2058 static int umount_device(struct discover_device *dev)
2060 const char *device_path;
2063 if (!dev->mounted || !dev->unmount)
2066 device_path = get_device_path(dev);
2068 pb_log("unmounting device %s\n", device_path);
2069 rc = umount(dev->mount_path);
2073 dev->mounted = false;
2074 devmapper_destroy_snapshot(dev);
2076 pb_rmdir_recursive(mount_base(), dev->mount_path);
2078 talloc_free(dev->mount_path);
2079 dev->mount_path = NULL;
2080 dev->root_path = NULL;
2085 int device_request_write(struct discover_device *dev, bool *release)
2087 const char *fstype, *device_path;
2088 const struct config *config;
2093 config = config_get();
2094 if (!config->allow_writes)
2100 if (dev->mounted_rw)
2103 fstype = discover_device_get_param(dev, "ID_FS_TYPE");
2105 device_path = get_device_path(dev);
2107 pb_log("remounting device %s read-write\n", device_path);
2109 rc = umount(dev->mount_path);
2111 pb_log("Failed to unmount %s: %s\n",
2112 dev->mount_path, strerror(errno));
2116 rc = try_mount(device_path, dev->mount_path, fstype,
2117 MS_SILENT, dev->ramdisk);
2121 dev->mounted_rw = true;
2126 pb_log("Unable to remount device %s read-write: %s\n",
2127 device_path, strerror(errno));
2128 rc = try_mount(device_path, dev->mount_path, fstype,
2129 MS_RDONLY | MS_SILENT, dev->ramdisk);
2131 pb_log("Unable to recover mount for %s: %s\n",
2132 device_path, strerror(errno));
2136 void device_release_write(struct discover_device *dev, bool release)
2138 const char *fstype, *device_path;
2143 device_path = get_device_path(dev);
2145 fstype = discover_device_get_param(dev, "ID_FS_TYPE");
2147 pb_log("remounting device %s read-only\n", device_path);
2149 if (umount(dev->mount_path)) {
2150 pb_log("Failed to unmount %s\n", dev->mount_path);
2153 dev->mounted_rw = dev->mounted = false;
2156 devmapper_merge_snapshot(dev);
2157 /* device_path becomes stale after merge */
2158 device_path = get_device_path(dev);
2161 if (try_mount(device_path, dev->mount_path, fstype,
2162 MS_RDONLY | MS_SILENT, dev->ramdisk))
2163 pb_log("Failed to remount %s read-only: %s\n",
2164 device_path, strerror(errno));
2166 dev->mounted = true;
2169 void device_sync_snapshots(struct device_handler *handler, const char *device)
2171 struct discover_device *dev = NULL;
2175 /* Find matching device and sync */
2176 dev = device_lookup_by_name(handler, device);
2178 pb_log("%s: device name '%s' unrecognised\n",
2183 device_release_write(dev, true);
2185 pb_log("%s has no snapshot to merge, skipping\n",
2190 /* Otherwise sync all relevant devices */
2191 for (i = 0; i < handler->n_devices; i++) {
2192 dev = handler->devices[i];
2193 if (dev->device->type != DEVICE_TYPE_DISK &&
2194 dev->device->type != DEVICE_TYPE_USB)
2197 device_release_write(dev, true);
2199 pb_log("%s has no snapshot to merge, skipping\n",
2206 void device_handler_discover_context_commit(
2207 struct device_handler *handler __attribute__((unused)),
2208 struct discover_context *ctx __attribute__((unused)))
2210 pb_log_fn("stubbed out for test cases\n");
2213 static void device_handler_update_lang(const char *lang __attribute__((unused)))
2217 static int device_handler_init_sources(
2218 struct device_handler *handler __attribute__((unused)))
2223 static void device_handler_reinit_sources(
2224 struct device_handler *handler __attribute__((unused)))
2228 static int umount_device(struct discover_device *dev __attribute__((unused)))
2233 static int __attribute__((unused)) mount_device(
2234 struct discover_device *dev __attribute__((unused)))
2239 int device_request_write(struct discover_device *dev __attribute__((unused)),
2246 void device_release_write(struct discover_device *dev __attribute__((unused)),
2247 bool release __attribute__((unused)))
2251 void device_sync_snapshots(
2252 struct device_handler *handler __attribute__((unused)),
2253 const char *device __attribute__((unused)))