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 discover_server_notify_boot_status(handler->server, status);
528 static void _device_handler_vstatus(struct device_handler *handler,
529 enum status_type type, const char *fmt, va_list ap)
531 struct status status;
534 status.message = talloc_vasprintf(handler, fmt, ap);
535 status.backlog = false;
537 device_handler_status(handler, &status);
539 talloc_free(status.message);
542 static void _device_handler_vdevstatus(struct device_handler *handler,
543 struct discover_device *device, enum status_type type,
544 const char *fmt, va_list ap)
548 msg = talloc_asprintf(handler, "[%s] %s",
549 device ? device->device->id : "unknown", fmt);
550 _device_handler_vstatus(handler, type, msg, ap);
554 void device_handler_status_dev_info(struct device_handler *handler,
555 struct discover_device *dev, const char *fmt, ...)
560 _device_handler_vdevstatus(handler, dev, STATUS_INFO, fmt, ap);
564 void device_handler_status_dev_err(struct device_handler *handler,
565 struct discover_device *dev, const char *fmt, ...)
570 _device_handler_vdevstatus(handler, dev, STATUS_ERROR, fmt, ap);
574 void device_handler_status_info(struct device_handler *handler,
575 const char *fmt, ...)
580 _device_handler_vstatus(handler, STATUS_INFO, fmt, ap);
584 void device_handler_status_err(struct device_handler *handler,
585 const char *fmt, ...)
590 _device_handler_vstatus(handler, STATUS_ERROR, fmt, ap);
594 void device_handler_status_download(struct device_handler *handler,
595 const struct process_info *procinfo,
596 unsigned int percentage, unsigned int size, char suffix)
598 struct progress_info *p, *progress = NULL;
599 uint64_t current_converted, current = 0;
600 const char *units = " kMGTP";
601 unsigned long size_bytes;
607 list_for_each_entry(&handler->progress, p, list)
608 if (p->procinfo == procinfo)
612 pb_log("Registering new progress struct\n");
613 progress = talloc_zero(handler, struct progress_info);
615 pb_log("Failed to allocate room for progress struct\n");
618 progress->procinfo = procinfo;
619 list_add(&handler->progress, &progress->list);
620 handler->n_progress++;
624 for (i = 0; i < strlen(units); i++) {
625 if (units[i] == suffix)
629 if (i >= strlen(units)) {
630 pb_log("Couldn't recognise suffix '%c'\n", suffix);
637 progress->percentage = percentage;
638 progress->size = size_bytes;
641 * Aggregate the info we have and update status. If a progress struct
642 * has zero for both percentage and size we assume progress information
643 * is unavailable and fall back to a generic progress message.
645 list_for_each_entry(&handler->progress, p, list) {
648 if (!p->percentage || !p->size) {
649 update = talloc_asprintf(handler,
650 _("%u downloads in progress..."),
651 handler->n_progress);
657 t = (100 * c) / p->percentage;
664 current_converted = current;
665 while (current_converted >= 1000) {
666 current_converted >>= 10;
669 update = talloc_asprintf(handler,
670 _("%u %s downloading: %.0f%% - %" PRIu64 "%cB"),
672 ngettext("item", "items", handler->n_progress),
673 (current / total) * 100, current_converted,
678 pb_log("%s: failed to allocate new status\n", __func__);
680 device_handler_status_info(handler, "%s\n", update);
685 static void device_handler_plugin_scan_device(struct device_handler *handler,
686 struct discover_device *dev)
690 pb_debug("Scanning %s for plugin files\n", dev->device->id);
692 rc = process_run_simple(handler, pb_system_apps.pb_plugin,
693 "scan", dev->mount_path,
696 pb_log("Error from pb-plugin scan %s\n",
700 void device_handler_status_download_remove(struct device_handler *handler,
701 struct process_info *procinfo)
703 struct progress_info *p, *tmp;
705 list_for_each_entry_safe(&handler->progress, p, tmp, list)
706 if (p->procinfo == procinfo) {
707 list_remove(&p->list);
709 handler->n_progress--;
713 static void device_handler_boot_status_cb(void *arg, struct status *status)
715 struct device_handler *handler = arg;
717 /* boot had failed; update handler state to allow a new default if one
720 if (status->type == STATUS_ERROR) {
721 handler->pending_boot = NULL;
722 handler->default_boot_option = NULL;
725 device_handler_status(handler, status);
728 static void countdown_status(struct device_handler *handler,
729 struct discover_boot_option *opt, unsigned int sec)
731 struct status status;
733 status.type = STATUS_INFO;
734 status.message = talloc_asprintf(handler,
735 _("Booting in %d sec: [%s] %s"), sec,
736 opt->device->device->id, opt->option->name);
737 status.backlog = false;
739 device_handler_status(handler, &status);
741 talloc_free(status.message);
744 static int default_timeout(void *arg)
746 struct device_handler *handler = arg;
747 struct discover_boot_option *opt;
749 if (!handler->default_boot_option)
752 if (handler->pending_boot)
755 opt = handler->default_boot_option;
757 if (handler->sec_to_boot) {
758 countdown_status(handler, opt, handler->sec_to_boot);
759 handler->sec_to_boot--;
760 handler->timeout_waiter = waiter_register_timeout(
761 handler->waitset, 1000,
762 default_timeout, handler);
766 handler->timeout_waiter = NULL;
768 pb_log("Timeout expired, booting default option %s\n", opt->option->id);
772 handler->pending_boot = boot(handler, handler->default_boot_option,
773 NULL, handler->dry_run, device_handler_boot_status_cb,
775 handler->pending_boot_is_default = true;
780 enum ipmi_bootdev ipmi_type;
781 enum device_type device_type;
782 } device_type_map[] = {
783 { IPMI_BOOTDEV_NETWORK, DEVICE_TYPE_NETWORK },
784 { IPMI_BOOTDEV_DISK, DEVICE_TYPE_DISK },
785 { IPMI_BOOTDEV_DISK, DEVICE_TYPE_USB },
786 { IPMI_BOOTDEV_CDROM, DEVICE_TYPE_OPTICAL },
789 static bool ipmi_device_type_matches(enum ipmi_bootdev ipmi_type,
790 enum device_type device_type)
794 for (i = 0; i < ARRAY_SIZE(device_type_map); i++) {
795 if (device_type_map[i].device_type == device_type)
796 return device_type_map[i].ipmi_type == ipmi_type;
802 static bool autoboot_option_matches(struct autoboot_option *opt,
803 struct discover_device *dev)
805 if (opt->boot_type == BOOT_DEVICE_UUID)
806 if (!strcmp(opt->uuid, dev->uuid))
809 if (opt->boot_type == BOOT_DEVICE_TYPE)
810 if (opt->type == dev->device->type ||
811 opt->type == DEVICE_TYPE_ANY)
817 static int autoboot_option_priority(const struct config *config,
818 struct discover_boot_option *opt)
820 struct autoboot_option *auto_opt;
823 for (i = 0; i < config->n_autoboot_opts; i++) {
824 auto_opt = &config->autoboot_opts[i];
825 if (autoboot_option_matches(auto_opt, opt->device))
826 return DEFAULT_PRIORITY_LOCAL_FIRST + i;
833 * We have different priorities to resolve conflicts between boot options that
834 * report to be the default for their device. This function assigns a priority
837 static enum default_priority default_option_priority(
838 struct device_handler *handler,
839 struct discover_boot_option *opt)
841 const struct config *config;
843 /* Temporary user-provided autoboot options have highest priority */
844 if (handler->temp_autoboot) {
845 if (autoboot_option_matches(handler->temp_autoboot,
847 return DEFAULT_PRIORITY_TEMP_USER;
849 pb_debug("handler: disabled default priority due to "
850 "temporary user override\n");
851 return DEFAULT_PRIORITY_DISABLED;
854 config = config_get();
856 /* Next highest priority to IPMI-configured boot options. If we have an
857 * IPMI bootdev configuration set, then we don't allow any other
859 if (config->ipmi_bootdev) {
860 bool ipmi_match = ipmi_device_type_matches(config->ipmi_bootdev,
861 opt->device->device->type);
863 return DEFAULT_PRIORITY_REMOTE;
865 pb_debug("handler: disabled default priority due to "
866 "non-matching IPMI type %x\n",
867 config->ipmi_bootdev);
868 return DEFAULT_PRIORITY_DISABLED;
871 /* Next, try to match the option against the user-defined autoboot
872 * options, either by device UUID or type. */
873 if (config->n_autoboot_opts) {
874 int boot_match = autoboot_option_priority(config, opt);
878 /* If there is no specific boot order, boot any device */
879 return DEFAULT_PRIORITY_LOCAL_FIRST;
882 /* If the option didn't match any entry in the array, it is disabled */
883 pb_debug("handler: disabled default priority due to "
884 "non-matching UUID or type\n");
885 return DEFAULT_PRIORITY_DISABLED;
888 static void set_default(struct device_handler *handler,
889 struct discover_boot_option *opt)
891 enum default_priority cur_prio, new_prio;
893 if (!handler->autoboot_enabled)
896 pb_debug("handler: new default option: %s\n", opt->option->id);
898 new_prio = default_option_priority(handler, opt);
900 /* Anything outside our range prevents a default boot */
901 if (new_prio >= DEFAULT_PRIORITY_DISABLED)
904 pb_debug("handler: calculated priority %d\n", new_prio);
906 /* Resolve any conflicts: if we have a new default option, it only
907 * replaces the current if it has a higher priority. */
908 if (handler->default_boot_option) {
910 cur_prio = handler->default_boot_option_priority;
912 if (new_prio < cur_prio) {
913 pb_log("handler: new prio %d beats "
914 "old prio %d for %s\n",
916 handler->default_boot_option
918 handler->default_boot_option = opt;
919 handler->default_boot_option_priority = new_prio;
920 /* extend the timeout a little, so the user sees some
921 * indication of the change */
922 handler->sec_to_boot += 2;
928 handler->sec_to_boot = config_get()->autoboot_timeout_sec;
929 handler->default_boot_option = opt;
930 handler->default_boot_option_priority = new_prio;
932 pb_log("handler: boot option %s set as default, timeout %u sec.\n",
933 opt->option->id, handler->sec_to_boot);
935 default_timeout(handler);
938 void device_handler_apply_temp_autoboot(struct device_handler *handler,
939 struct autoboot_option *opt)
943 handler->temp_autoboot = talloc_steal(handler, opt);
945 if (!handler->autoboot_enabled)
948 if (!handler->default_boot_option)
951 if (autoboot_option_matches(opt, handler->default_boot_option->device))
954 /* cancel the default, and rescan available options */
955 device_handler_cancel_default(handler);
957 handler->autoboot_enabled = true;
959 for (i = 0; i < handler->n_devices; i++) {
960 struct discover_device *dev = handler->devices[i];
961 struct discover_boot_option *boot_opt;
963 if (!autoboot_option_matches(opt, dev))
966 list_for_each_entry(&dev->boot_options, boot_opt, list) {
967 if (boot_opt->option->is_default) {
968 set_default(handler, boot_opt);
975 static bool resource_is_resolved(struct resource *res)
977 return !res || res->resolved;
980 /* We only use this in an assert, which will disappear if we're compiling
981 * with NDEBUG, so we need the 'used' attribute for these builds */
982 static bool __attribute__((used)) boot_option_is_resolved(
983 struct discover_boot_option *opt)
985 return resource_is_resolved(opt->boot_image) &&
986 resource_is_resolved(opt->initrd) &&
987 resource_is_resolved(opt->dtb) &&
988 resource_is_resolved(opt->args_sig_file) &&
989 resource_is_resolved(opt->icon);
992 static bool resource_resolve(struct resource *res, const char *name,
993 struct discover_boot_option *opt,
994 struct device_handler *handler)
996 struct parser *parser = opt->source;
998 if (resource_is_resolved(res))
1001 pb_debug("Attempting to resolve resource %s->%s with parser %s\n",
1002 opt->option->id, name, parser->name);
1003 parser->resolve_resource(handler, res);
1005 return res->resolved;
1008 static bool boot_option_resolve(struct discover_boot_option *opt,
1009 struct device_handler *handler)
1011 return resource_resolve(opt->boot_image, "boot_image", opt, handler) &&
1012 resource_resolve(opt->initrd, "initrd", opt, handler) &&
1013 resource_resolve(opt->dtb, "dtb", opt, handler) &&
1014 resource_resolve(opt->args_sig_file, "args_sig_file", opt,
1016 resource_resolve(opt->icon, "icon", opt, handler);
1019 static void boot_option_finalise(struct device_handler *handler,
1020 struct discover_boot_option *opt)
1022 assert(boot_option_is_resolved(opt));
1024 /* check that the parsers haven't set any of the final data */
1025 assert(!opt->option->boot_image_file);
1026 assert(!opt->option->initrd_file);
1027 assert(!opt->option->dtb_file);
1028 assert(!opt->option->icon_file);
1029 assert(!opt->option->device_id);
1030 assert(!opt->option->args_sig_file);
1032 if (opt->boot_image)
1033 opt->option->boot_image_file = opt->boot_image->url->full;
1035 opt->option->initrd_file = opt->initrd->url->full;
1037 opt->option->dtb_file = opt->dtb->url->full;
1039 opt->option->icon_file = opt->icon->url->full;
1040 if (opt->args_sig_file)
1041 opt->option->args_sig_file = opt->args_sig_file->url->full;
1043 opt->option->device_id = opt->device->device->id;
1045 if (opt->option->is_default)
1046 set_default(handler, opt);
1049 static void notify_boot_option(struct device_handler *handler,
1050 struct discover_boot_option *opt)
1052 struct discover_device *dev = opt->device;
1055 discover_server_notify_device_add(handler->server,
1056 opt->device->device);
1057 dev->notified = true;
1058 discover_server_notify_boot_option_add(handler->server, opt->option);
1061 static void process_boot_option_queue(struct device_handler *handler)
1063 struct discover_boot_option *opt, *tmp;
1065 list_for_each_entry_safe(&handler->unresolved_boot_options,
1068 pb_debug("queue: attempting resolution for %s\n",
1071 if (!boot_option_resolve(opt, handler))
1074 pb_debug("\tresolved!\n");
1076 list_remove(&opt->list);
1077 list_add_tail(&opt->device->boot_options, &opt->list);
1078 talloc_steal(opt->device, opt);
1079 boot_option_finalise(handler, opt);
1080 notify_boot_option(handler, opt);
1084 struct discover_context *device_handler_discover_context_create(
1085 struct device_handler *handler,
1086 struct discover_device *device)
1088 struct discover_context *ctx;
1090 ctx = talloc_zero(handler, struct discover_context);
1091 ctx->handler = handler;
1092 ctx->device = device;
1093 list_init(&ctx->boot_options);
1098 void device_handler_add_device(struct device_handler *handler,
1099 struct discover_device *device)
1101 handler->n_devices++;
1102 handler->devices = talloc_realloc(handler, handler->devices,
1103 struct discover_device *, handler->n_devices);
1104 handler->devices[handler->n_devices - 1] = device;
1106 if (device->device->type == DEVICE_TYPE_NETWORK)
1107 network_register_device(handler->network, device);
1110 void device_handler_add_ramdisk(struct device_handler *handler,
1113 struct ramdisk_device *dev;
1119 for (i = 0; i < handler->n_ramdisks; i++)
1120 if (!strcmp(handler->ramdisks[i]->path, path))
1123 dev = talloc_zero(handler, struct ramdisk_device);
1125 pb_log("Failed to allocate memory to track %s\n", path);
1129 dev->path = talloc_strdup(handler, path);
1131 handler->ramdisks = talloc_realloc(handler, handler->ramdisks,
1132 struct ramdisk_device *,
1133 handler->n_ramdisks + 1);
1134 if (!handler->ramdisks) {
1135 pb_log("Failed to reallocate memory"
1136 "- ramdisk tracking inconsistent!\n");
1140 handler->ramdisks[i] = dev;
1141 i = handler->n_ramdisks++;
1144 struct ramdisk_device *device_handler_get_ramdisk(
1145 struct device_handler *handler)
1151 /* Check if free ramdisk exists */
1152 for (i = 0; i < handler->n_ramdisks; i++)
1153 if (!handler->ramdisks[i]->snapshot &&
1154 !handler->ramdisks[i]->origin &&
1155 !handler->ramdisks[i]->base)
1156 return handler->ramdisks[i];
1158 /* Otherwise create a new one */
1159 name = talloc_asprintf(handler, "/dev/ram%d",
1160 handler->n_ramdisks);
1162 pb_debug("Failed to allocate memory to name /dev/ram%d",
1163 handler->n_ramdisks);
1167 id = makedev(1, handler->n_ramdisks);
1168 if (mknod(name, S_IFBLK, id)) {
1169 if (errno == EEXIST) {
1170 /* We haven't yet received updates for existing
1171 * ramdisks - add and use this one */
1172 pb_debug("Using untracked ramdisk %s\n", name);
1174 pb_log("Failed to create new ramdisk %s: %s\n",
1175 name, strerror(errno));
1179 device_handler_add_ramdisk(handler, name);
1182 return handler->ramdisks[i];
1185 void device_handler_release_ramdisk(struct discover_device *device)
1187 struct ramdisk_device *ramdisk = device->ramdisk;
1189 talloc_free(ramdisk->snapshot);
1190 talloc_free(ramdisk->origin);
1191 talloc_free(ramdisk->base);
1193 ramdisk->snapshot = ramdisk->origin = ramdisk->base = NULL;
1194 ramdisk->sectors = 0;
1196 device->ramdisk = NULL;
1199 /* Start discovery on a hotplugged device. The device will be in our devices
1200 * array, but has only just been initialised by the hotplug source.
1202 int device_handler_discover(struct device_handler *handler,
1203 struct discover_device *dev)
1205 struct discover_context *ctx;
1208 device_handler_status_dev_info(handler, dev,
1210 * TRANSLATORS: this string will be passed the type of the
1211 * device (eg "disk" or "network"), which will be translated
1214 _("Processing new %s device"),
1215 device_type_display_name(dev->device->type));
1217 /* create our context */
1218 ctx = device_handler_discover_context_create(handler, dev);
1220 rc = mount_device(dev);
1224 /* add this device to our system info */
1225 system_info_register_blockdev(dev->device->id, dev->uuid,
1228 /* run the parsers. This will populate the ctx's boot_option list. */
1229 iterate_parsers(ctx);
1231 /* add discovered stuff to the handler */
1232 device_handler_discover_context_commit(handler, ctx);
1234 process_boot_option_queue(handler);
1236 /* Check this device for pb-plugins */
1237 device_handler_plugin_scan_device(handler, dev);
1239 talloc_unlink(handler, ctx);
1244 struct requery_data {
1245 struct device_handler *handler;
1246 struct discover_device *device;
1249 static int device_handler_requery_timeout_fn(void *data)
1251 struct discover_boot_option *opt, *tmp;
1252 struct requery_data *rqd = data;
1253 struct device_handler *handler;
1254 struct discover_device *device;
1256 handler = rqd->handler;
1257 device = rqd->device;
1261 /* network_requery_device may re-add a timeout, so clear the device
1262 * waiter here, so we can potentially start a new one. */
1263 device->requery_waiter = NULL;
1265 /* We keep the device around, but get rid of the parsed boot
1266 * options on that device. That involves delaring out the lists,
1267 * and potentially cancelling a default.
1269 list_for_each_entry_safe(&handler->unresolved_boot_options,
1271 if (opt->device != device)
1273 list_remove(&opt->list);
1277 list_for_each_entry_safe(&device->boot_options, opt, tmp, list) {
1278 if (opt == handler->default_boot_option) {
1279 pb_log("Default option %s cancelled since device is being requeried",
1281 device_handler_cancel_default(handler);
1283 list_remove(&opt->list);
1287 discover_server_notify_device_remove(handler->server, device->device);
1288 device->notified = false;
1290 network_requery_device(handler->network, device);
1295 /* Schedule a requery in timeout (seconds).
1297 * Special values of timeout:
1301 void device_handler_start_requery_timeout( struct device_handler *handler,
1302 struct discover_device *dev, int timeout)
1304 struct requery_data *rqd;
1306 if (dev->requery_waiter)
1310 timeout = default_rescan_timeout;
1311 else if (timeout == 0)
1314 rqd = talloc(dev, struct requery_data);
1315 rqd->handler = handler;
1318 pb_debug("starting requery timeout for device %s, in %d sec\n",
1319 dev->device->id, timeout);
1321 dev->requery_waiter = waiter_register_timeout(handler->waitset,
1322 timeout * 1000, device_handler_requery_timeout_fn, rqd);
1325 static int event_requery_timeout(struct event *event)
1335 str = event_get_param(event, "reboottime");
1339 x = strtoul(str, &endp, 0);
1347 /* Incoming dhcp event */
1348 int device_handler_dhcp(struct device_handler *handler,
1349 struct discover_device *dev, struct event *event)
1351 struct discover_context *ctx;
1353 device_handler_status_dev_info(handler, dev,
1354 _("Processing DHCP lease response (ip: %s)"),
1355 event_get_param(event, "ip"));
1357 pending_network_jobs_start();
1359 /* create our context */
1360 ctx = device_handler_discover_context_create(handler, dev);
1361 talloc_steal(ctx, event);
1364 device_handler_start_requery_timeout(handler, dev,
1365 event_requery_timeout(event));
1367 iterate_parsers(ctx);
1369 device_handler_discover_context_commit(handler, ctx);
1371 talloc_unlink(handler, ctx);
1376 static struct discover_boot_option *find_boot_option_by_id(
1377 struct device_handler *handler, const char *id)
1381 for (i = 0; i < handler->n_devices; i++) {
1382 struct discover_device *dev = handler->devices[i];
1383 struct discover_boot_option *opt;
1385 list_for_each_entry(&dev->boot_options, opt, list)
1386 if (!strcmp(opt->option->id, id))
1393 void device_handler_boot(struct device_handler *handler,
1394 struct boot_command *cmd)
1396 struct discover_boot_option *opt = NULL;
1398 if (cmd->option_id && strlen(cmd->option_id))
1399 opt = find_boot_option_by_id(handler, cmd->option_id);
1401 if (handler->pending_boot)
1402 boot_cancel(handler->pending_boot);
1404 platform_pre_boot();
1406 handler->pending_boot = boot(handler, opt, cmd, handler->dry_run,
1407 device_handler_boot_status_cb, handler);
1408 handler->pending_boot_is_default = false;
1411 void device_handler_cancel_default(struct device_handler *handler)
1413 if (handler->timeout_waiter)
1414 waiter_remove(handler->timeout_waiter);
1416 handler->timeout_waiter = NULL;
1417 handler->autoboot_enabled = false;
1419 /* we only send status if we had a default boot option queued */
1420 if (!handler->default_boot_option)
1423 pb_log("Cancelling default boot option\n");
1425 if (handler->pending_boot && handler->pending_boot_is_default) {
1426 boot_cancel(handler->pending_boot);
1427 handler->pending_boot = NULL;
1428 handler->pending_boot_is_default = false;
1431 handler->default_boot_option = NULL;
1433 device_handler_status_info(handler, _("Default boot cancelled"));
1436 void device_handler_update_config(struct device_handler *handler,
1437 struct config *config)
1441 rc = config_set(config);
1445 discover_server_notify_config(handler->server, config);
1446 device_handler_update_lang(config->lang);
1447 device_handler_reinit(handler);
1450 static char *device_from_addr(void *ctx, struct pb_url *url)
1452 char *ipaddr, *buf, *tok, *dev = NULL;
1453 const char *delim = " ";
1454 struct sockaddr_in *ip;
1455 struct sockaddr_in si;
1456 struct addrinfo *res;
1460 /* Note: IPv4 only */
1461 rc = inet_pton(AF_INET, url->host, &(si.sin_addr));
1465 /* need to turn hostname into a valid IP */
1466 rc = getaddrinfo(url->host, NULL, NULL, &res);
1468 pb_debug("%s: Invalid URL\n",__func__);
1471 ipaddr = talloc_array(ctx,char,INET_ADDRSTRLEN);
1472 ip = (struct sockaddr_in *) res->ai_addr;
1473 inet_ntop(AF_INET, &(ip->sin_addr), ipaddr, INET_ADDRSTRLEN);
1477 const char *argv[] = {
1479 "route", "show", "to", "match",
1484 p = process_create(ctx);
1486 p->path = pb_system_apps.ip;
1488 p->keep_stdout = true;
1490 rc = process_run_sync(p);
1492 if (rc || p->exit_status) {
1493 /* ip has complained for some reason; most likely
1494 * there is no route to the host - bail out */
1495 pb_debug("%s: `ip` returns non-zero exit status\n", __func__);
1496 pb_debug("ip buf: %s\n", p->stdout_buf);
1501 buf = p->stdout_buf;
1502 /* If a route is found, ip-route output will be of the form
1503 * "... dev DEVNAME ... " */
1504 tok = strtok(buf, delim);
1506 if (!strcmp(tok, "dev")) {
1507 tok = strtok(NULL, delim);
1508 dev = talloc_strdup(ctx, tok);
1511 tok = strtok(NULL, delim);
1516 pb_debug("%s: Found interface '%s'\n", __func__,dev);
1520 static void process_url_cb(struct load_url_result *result, void *data)
1522 struct device_handler *handler;
1523 struct discover_context *ctx;
1524 struct discover_device *dev;
1525 struct event *event = data;
1528 if (result->status != LOAD_OK) {
1529 pb_log("%s: Load failed for %s\n", __func__, result->url->full);
1536 handler = talloc_parent(event);
1540 event->device = device_from_addr(event, result->url);
1541 if (!event->device) {
1542 pb_log("Downloaded a file but can't find its interface - pretending it was local\n");
1543 event->device = talloc_asprintf(event, "local");
1546 mac = event_get_param(event, "mac");
1547 char *url = talloc_asprintf(event, "file://%s", result->local);
1548 event_set_param(event, "pxeconffile-local", url);
1550 dev = discover_device_create(handler, mac, event->device);
1551 ctx = device_handler_discover_context_create(handler, dev);
1552 talloc_steal(ctx, event);
1555 iterate_parsers(ctx);
1557 device_handler_discover_context_commit(handler, ctx);
1559 talloc_unlink(handler, ctx);
1562 void device_handler_process_url(struct device_handler *handler,
1563 const char *url, const char *mac, const char *ip)
1565 struct discover_context *ctx;
1566 struct discover_device *dev;
1567 bool allow_async = false;
1568 struct pb_url *pb_url;
1569 struct event *event;
1571 event = talloc_zero(handler, struct event);
1572 event->type = EVENT_TYPE_USER;
1573 event->action = EVENT_ACTION_URL;
1575 pb_url = pb_url_parse(event, url);
1576 if (!pb_url || (pb_url->scheme != pb_url_file && !pb_url->host)) {
1577 device_handler_status_err(handler, _("Invalid config URL!"));
1582 if (url[strlen(url) - 1] == '/') {
1583 event_set_param(event, "pxepathprefix", url);
1584 event_set_param(event, "mac", mac);
1585 event_set_param(event, "ip", ip);
1586 event->device = device_from_addr(event, pb_url);
1587 if (!event->device) {
1588 device_handler_status_err(handler,
1589 _("Unable to route to host %s"),
1595 event_set_param(event, "pxeconffile", url);
1599 if (pb_url->scheme == pb_url_file)
1600 event->device = talloc_asprintf(event, "local");
1601 else if (allow_async) {
1602 /* If file is remote load asynchronously before passing to
1603 * parser. This allows us to wait for network to be available */
1604 if (!load_url_async(handler, pb_url, process_url_cb, event,
1606 pb_log("Failed to load url %s\n", pb_url->full);
1607 device_handler_status_err(handler, _("Failed to load URL!"));
1613 /* If path is local we can parse straight away */
1615 dev = discover_device_create(handler, mac, event->device);
1616 if (pb_url->scheme == pb_url_file)
1617 dev->device->type = DEVICE_TYPE_ANY;
1618 ctx = device_handler_discover_context_create(handler, dev);
1619 talloc_steal(ctx, event);
1622 iterate_parsers(ctx);
1624 device_handler_discover_context_commit(handler, ctx);
1626 talloc_unlink(handler, ctx);
1629 static void plugin_install_cb(struct process *process)
1631 struct device_handler *handler = process->data;
1634 pb_log("%s: Missing data!\n", __func__);
1638 handler->plugin_installing = false;
1639 if (process->exit_status) {
1640 device_handler_status_err(handler, "Plugin failed to install!");
1641 pb_log("Failed to install plugin:\n%s\n", process->stdout_buf);
1645 void device_handler_install_plugin(struct device_handler *handler,
1646 const char *plugin_file)
1651 if (handler->plugin_installing) {
1652 pb_log("Plugin install cancelled - install already running");
1656 p = process_create(handler);
1658 pb_log("install_plugin: Failed to create process\n");
1662 const char *argv[] = {
1663 pb_system_apps.pb_plugin,
1670 p->path = pb_system_apps.pb_plugin;
1672 p->exit_cb = plugin_install_cb;
1674 p->keep_stdout = true;
1676 result = process_run_async(p);
1679 device_handler_status_err(handler, "Could not install plugin");
1681 handler->plugin_installing = true;
1684 #ifndef PETITBOOT_TEST
1687 * context_commit - Commit a temporary discovery context to the handler,
1688 * and notify the clients about any new options / devices
1690 void device_handler_discover_context_commit(struct device_handler *handler,
1691 struct discover_context *ctx)
1693 struct discover_device *dev = ctx->device;
1694 struct discover_boot_option *opt, *tmp;
1696 if (!device_lookup_by_uuid(handler, dev->uuid))
1697 device_handler_add_device(handler, dev);
1699 /* move boot options from the context to the device */
1700 list_for_each_entry_safe(&ctx->boot_options, opt, tmp, list) {
1701 list_remove(&opt->list);
1703 /* All boot options need at least a kernel image */
1704 if (!opt->boot_image || !opt->boot_image->url) {
1705 pb_log("boot option %s is missing boot image, ignoring\n",
1711 if (boot_option_resolve(opt, handler)) {
1712 pb_log("boot option %s is resolved, "
1713 "sending to clients\n",
1715 list_add_tail(&dev->boot_options, &opt->list);
1716 talloc_steal(dev, opt);
1717 boot_option_finalise(handler, opt);
1718 notify_boot_option(handler, opt);
1720 if (!opt->source->resolve_resource) {
1721 pb_log("parser %s gave us an unresolved "
1722 "resource (%s), but no way to "
1724 opt->source->name, opt->option->id);
1727 pb_log("boot option %s is unresolved, "
1728 "adding to queue\n",
1730 list_add(&handler->unresolved_boot_options,
1732 talloc_steal(handler, opt);
1738 void device_handler_add_plugin_option(struct device_handler *handler,
1739 struct plugin_option *opt)
1741 struct plugin_option *tmp;
1744 for (i = 0; i < handler->n_plugins; i++) {
1745 tmp = handler->plugins[i];
1746 /* If both id and version match, ignore */
1747 if (strncmp(opt->id, tmp->id, strlen(opt->id)) == 0 &&
1748 strcmp(opt->version, tmp->version) == 0) {
1749 pb_log("discover: Plugin '%s' already exists, ignoring\n",
1755 handler->plugins = talloc_realloc(handler, handler->plugins,
1756 struct plugin_option *, handler->n_plugins + 1);
1757 if (!handler->plugins) {
1758 pb_log("Failed to allocate memory for new plugin\n");
1759 handler->n_plugins = 0;
1763 handler->plugins[handler->n_plugins++] = opt;
1764 discover_server_notify_plugin_option_add(handler->server, opt);
1767 static void device_handler_update_lang(const char *lang)
1769 const char *cur_lang;
1774 cur_lang = setlocale(LC_ALL, NULL);
1775 if (cur_lang && !strcmp(cur_lang, lang))
1778 setlocale(LC_ALL, lang);
1781 static int device_handler_init_sources(struct device_handler *handler)
1783 /* init our device sources: udev, network and user events */
1784 handler->user_event = user_event_init(handler, handler->waitset);
1785 if (!handler->user_event)
1788 handler->network = network_init(handler, handler->waitset,
1790 if (!handler->network)
1793 handler->udev = udev_init(handler, handler->waitset);
1800 static void device_handler_reinit_sources(struct device_handler *handler)
1802 /* if we haven't initialised sources previously (becuase we started in
1803 * safe mode), then init once here. */
1804 if (!(handler->udev || handler->network || handler->user_event)) {
1805 device_handler_init_sources(handler);
1809 system_info_reinit();
1811 network_shutdown(handler->network);
1812 handler->network = network_init(handler, handler->waitset,
1815 udev_reinit(handler->udev);
1818 static inline const char *get_device_path(struct discover_device *dev)
1820 return dev->ramdisk ? dev->ramdisk->snapshot : dev->device_path;
1823 static char *check_subvols(struct discover_device *dev)
1825 const char *fstype = discover_device_get_param(dev, "ID_FS_TYPE");
1830 if (strncmp(fstype, "btrfs", strlen("btrfs")))
1831 return dev->mount_path;
1833 /* On btrfs a device's root may be under a subvolume path */
1834 path = join_paths(dev, dev->mount_path, "@");
1835 rc = stat(path, &sb);
1836 if (!rc && S_ISDIR(sb.st_mode)) {
1837 pb_debug("Using '%s' for btrfs root path\n", path);
1842 return dev->mount_path;
1845 static bool check_existing_mount(struct discover_device *dev)
1847 struct stat devstat, mntstat;
1848 const char *device_path;
1853 device_path = get_device_path(dev);
1855 rc = stat(device_path, &devstat);
1857 pb_debug("%s: stat failed: %s\n", __func__, strerror(errno));
1861 if (!S_ISBLK(devstat.st_mode)) {
1862 pb_debug("%s: %s isn't a block device?\n", __func__,
1867 fp = fopen("/proc/self/mounts", "r");
1870 mnt = getmntent(fp);
1874 if (!mnt->mnt_fsname || mnt->mnt_fsname[0] != '/')
1877 rc = stat(mnt->mnt_fsname, &mntstat);
1881 if (!S_ISBLK(mntstat.st_mode))
1884 if (mntstat.st_rdev == devstat.st_rdev) {
1885 dev->mount_path = talloc_strdup(dev, mnt->mnt_dir);
1886 dev->root_path = check_subvols(dev);
1887 dev->mounted_rw = !!hasmntopt(mnt, "rw");
1888 dev->mounted = true;
1889 dev->unmount = false;
1891 pb_debug("%s: %s is already mounted (r%c) at %s\n",
1892 __func__, dev->device_path,
1893 dev->mounted_rw ? 'w' : 'o',
1905 * Attempt to mount a filesystem safely, while handling certain filesytem-
1908 static int try_mount(const char *device_path, const char *mount_path,
1909 const char *fstype, unsigned long flags,
1912 const char *fs, *safe_opts;
1915 /* Mount ext3 as ext4 instead so 'norecovery' can be used */
1916 if (strncmp(fstype, "ext3", strlen("ext3")) == 0) {
1917 pb_debug("Mounting ext3 filesystem as ext4\n");
1922 if (strncmp(fs, "xfs", strlen("xfs")) == 0 ||
1923 strncmp(fs, "ext4", strlen("ext4")) == 0)
1924 safe_opts = "norecovery";
1929 /* If no snapshot is available don't attempt recovery */
1931 return mount(device_path, mount_path, fs, flags, safe_opts);
1933 rc = mount(device_path, mount_path, fs, flags, NULL);
1938 /* Mounting failed; some filesystems will fail to mount if a recovery
1939 * journal exists (eg. cross-endian XFS), so try again with norecovery
1940 * where that option is available.
1941 * If mounting read-write just return the error as norecovery is not a
1943 if ((flags & MS_RDONLY) != MS_RDONLY || !safe_opts)
1947 return mount(device_path, mount_path, fs, flags, safe_opts);
1950 static int mount_device(struct discover_device *dev)
1952 const char *fstype, *device_path;
1955 if (!dev->device_path)
1961 if (check_existing_mount(dev))
1964 fstype = discover_device_get_param(dev, "ID_FS_TYPE");
1968 dev->mount_path = join_paths(dev, mount_base(),
1971 if (pb_mkdir_recursive(dev->mount_path)) {
1972 pb_log("couldn't create mount directory %s: %s\n",
1973 dev->mount_path, strerror(errno));
1977 device_path = get_device_path(dev);
1979 pb_log("mounting device %s read-only\n", dev->device_path);
1980 rc = try_mount(device_path, dev->mount_path, fstype,
1981 MS_RDONLY | MS_SILENT, dev->ramdisk);
1983 /* If mount fails clean up any snapshot and try again */
1984 if (rc && dev->ramdisk) {
1985 pb_log("couldn't mount snapshot for %s: mount failed: %s\n",
1986 device_path, strerror(errno));
1987 pb_log("falling back to actual device\n");
1989 devmapper_destroy_snapshot(dev);
1991 device_path = get_device_path(dev);
1992 pb_log("mounting device %s read-only\n", dev->device_path);
1993 rc = try_mount(device_path, dev->mount_path, fstype,
1994 MS_RDONLY | MS_SILENT, dev->ramdisk);
1998 dev->mounted = true;
1999 dev->mounted_rw = false;
2000 dev->unmount = true;
2001 dev->root_path = check_subvols(dev);
2005 pb_log("couldn't mount device %s: mount failed: %s\n",
2006 device_path, strerror(errno));
2008 pb_rmdir_recursive(mount_base(), dev->mount_path);
2010 talloc_free(dev->mount_path);
2011 dev->mount_path = NULL;
2015 static int umount_device(struct discover_device *dev)
2017 const char *device_path;
2020 if (!dev->mounted || !dev->unmount)
2023 device_path = get_device_path(dev);
2025 pb_log("unmounting device %s\n", device_path);
2026 rc = umount(dev->mount_path);
2030 dev->mounted = false;
2031 devmapper_destroy_snapshot(dev);
2033 pb_rmdir_recursive(mount_base(), dev->mount_path);
2035 talloc_free(dev->mount_path);
2036 dev->mount_path = NULL;
2037 dev->root_path = NULL;
2042 int device_request_write(struct discover_device *dev, bool *release)
2044 const char *fstype, *device_path;
2045 const struct config *config;
2050 config = config_get();
2051 if (!config->allow_writes)
2057 if (dev->mounted_rw)
2060 fstype = discover_device_get_param(dev, "ID_FS_TYPE");
2062 device_path = get_device_path(dev);
2064 pb_log("remounting device %s read-write\n", device_path);
2066 rc = umount(dev->mount_path);
2068 pb_log("Failed to unmount %s: %s\n",
2069 dev->mount_path, strerror(errno));
2073 rc = try_mount(device_path, dev->mount_path, fstype,
2074 MS_SILENT, dev->ramdisk);
2078 dev->mounted_rw = true;
2083 pb_log("Unable to remount device %s read-write: %s\n",
2084 device_path, strerror(errno));
2085 rc = try_mount(device_path, dev->mount_path, fstype,
2086 MS_RDONLY | MS_SILENT, dev->ramdisk);
2088 pb_log("Unable to recover mount for %s: %s\n",
2089 device_path, strerror(errno));
2093 void device_release_write(struct discover_device *dev, bool release)
2095 const char *fstype, *device_path;
2100 device_path = get_device_path(dev);
2102 fstype = discover_device_get_param(dev, "ID_FS_TYPE");
2104 pb_log("remounting device %s read-only\n", device_path);
2106 if (umount(dev->mount_path)) {
2107 pb_log("Failed to unmount %s\n", dev->mount_path);
2110 dev->mounted_rw = dev->mounted = false;
2113 devmapper_merge_snapshot(dev);
2114 /* device_path becomes stale after merge */
2115 device_path = get_device_path(dev);
2118 if (try_mount(device_path, dev->mount_path, fstype,
2119 MS_RDONLY | MS_SILENT, dev->ramdisk))
2120 pb_log("Failed to remount %s read-only: %s\n",
2121 device_path, strerror(errno));
2123 dev->mounted = true;
2126 void device_sync_snapshots(struct device_handler *handler, const char *device)
2128 struct discover_device *dev = NULL;
2132 /* Find matching device and sync */
2133 dev = device_lookup_by_name(handler, device);
2135 pb_log("%s: device name '%s' unrecognised\n",
2140 device_release_write(dev, true);
2142 pb_log("%s has no snapshot to merge, skipping\n",
2147 /* Otherwise sync all relevant devices */
2148 for (i = 0; i < handler->n_devices; i++) {
2149 dev = handler->devices[i];
2150 if (dev->device->type != DEVICE_TYPE_DISK &&
2151 dev->device->type != DEVICE_TYPE_USB)
2154 device_release_write(dev, true);
2156 pb_log("%s has no snapshot to merge, skipping\n",
2163 void device_handler_discover_context_commit(
2164 struct device_handler *handler __attribute__((unused)),
2165 struct discover_context *ctx __attribute__((unused)))
2167 pb_log("%s stubbed out for test cases\n", __func__);
2170 static void device_handler_update_lang(const char *lang __attribute__((unused)))
2174 static int device_handler_init_sources(
2175 struct device_handler *handler __attribute__((unused)))
2180 static void device_handler_reinit_sources(
2181 struct device_handler *handler __attribute__((unused)))
2185 static int umount_device(struct discover_device *dev __attribute__((unused)))
2190 static int __attribute__((unused)) mount_device(
2191 struct discover_device *dev __attribute__((unused)))
2196 int device_request_write(struct discover_device *dev __attribute__((unused)),
2203 void device_release_write(struct discover_device *dev __attribute__((unused)),
2204 bool release __attribute__((unused)))
2208 void device_sync_snapshots(
2209 struct device_handler *handler __attribute__((unused)),
2210 const char *device __attribute__((unused)))