-
#include <assert.h>
#include <stdlib.h>
+#include <stdbool.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
+#include <mntent.h>
+#include <locale.h>
#include <sys/stat.h>
#include <sys/wait.h>
+#include <sys/mount.h>
#include <talloc/talloc.h>
#include <list/list.h>
#include <log/log.h>
#include <types/types.h>
#include <system/system.h>
+#include <process/process.h>
#include <url/url.h>
+#include <i18n/i18n.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <arpa/inet.h>
#include "device-handler.h"
#include "discover-server.h"
+#include "devmapper.h"
+#include "user-event.h"
+#include "platform.h"
#include "event.h"
#include "parser.h"
#include "resource.h"
-#include "udev.h"
#include "paths.h"
+#include "sysinfo.h"
#include "boot.h"
+#include "udev.h"
+#include "network.h"
+#include "ipmi.h"
+
+enum default_priority {
+ DEFAULT_PRIORITY_REMOTE = 1,
+ DEFAULT_PRIORITY_LOCAL_FIRST = 2,
+ DEFAULT_PRIORITY_LOCAL_LAST = 0xfe,
+ DEFAULT_PRIORITY_DISABLED = 0xff,
+};
struct device_handler {
struct discover_server *server;
int dry_run;
+ struct pb_udev *udev;
+ struct network *network;
+ struct user_event *user_event;
+
struct discover_device **devices;
unsigned int n_devices;
+ struct ramdisk_device **ramdisks;
+ unsigned int n_ramdisks;
+
struct waitset *waitset;
struct waiter *timeout_waiter;
- bool default_enabled;
+ bool autoboot_enabled;
unsigned int sec_to_boot;
struct discover_boot_option *default_boot_option;
+ int default_boot_option_priority;
+
struct list unresolved_boot_options;
+
+ struct boot_task *pending_boot;
+ bool pending_boot_is_default;
};
+static int mount_device(struct discover_device *dev);
+static int umount_device(struct discover_device *dev);
+
+static int device_handler_init_sources(struct device_handler *handler);
+static void device_handler_reinit_sources(struct device_handler *handler);
+
+static void device_handler_update_lang(const char *lang);
+
void discover_context_add_boot_option(struct discover_context *ctx,
struct discover_boot_option *boot_option)
{
return handler->devices[index];
}
+struct network *device_handler_get_network(
+ const struct device_handler *handler)
+{
+ return handler->network;
+}
+
struct discover_boot_option *discover_boot_option_create(
struct discover_context *ctx,
struct discover_device *device)
return opt;
}
-static int device_match_path(struct discover_device *dev, const char *path)
-{
- return dev->device_path && !strcmp(dev->device_path, path);
-}
-
static int device_match_uuid(struct discover_device *dev, const char *uuid)
{
return dev->uuid && !strcmp(dev->uuid, uuid);
return !strcmp(dev->device->id, id);
}
+static int device_match_serial(struct discover_device *dev, const char *serial)
+{
+ const char *val = discover_device_get_param(dev, "ID_SERIAL");
+ return val && !strcmp(val, serial);
+}
+
static struct discover_device *device_lookup(
struct device_handler *device_handler,
int (match_fn)(struct discover_device *, const char *),
struct discover_device *device_lookup_by_name(struct device_handler *handler,
const char *name)
{
- struct discover_device *dev;
- char *path;
-
- if (strncmp(name, "/dev/", strlen("/dev/")))
- path = talloc_asprintf(NULL, "/dev/%s", name);
- else
- path = talloc_strdup(NULL, name);
-
- dev = device_lookup_by_path(handler, path);
-
- talloc_free(path);
+ if (!strncmp(name, "/dev/", strlen("/dev/")))
+ name += strlen("/dev/");
- return dev;
-}
-
-struct discover_device *device_lookup_by_path(
- struct device_handler *device_handler,
- const char *path)
-{
- return device_lookup(device_handler, device_match_path, path);
+ return device_lookup_by_id(handler, name);
}
struct discover_device *device_lookup_by_uuid(
return device_lookup(device_handler, device_match_id, id);
}
+struct discover_device *device_lookup_by_serial(
+ struct device_handler *device_handler,
+ const char *serial)
+{
+ return device_lookup(device_handler, device_match_serial, serial);
+}
+
void device_handler_destroy(struct device_handler *handler)
{
talloc_free(handler);
}
-#ifdef PETITBOOT_TEST
-
-/* we have a simplified interface for petitboot testing, but still want
- * to keep struct device_handler opaque. */
-struct device_handler *device_handler_init(
- struct discover_server *server __attribute__((unused)),
- struct waitset *waitset __attribute__((unused)),
- int dry_run __attribute__((unused)))
+static int destroy_device(void *arg)
{
- struct device_handler *handler;
-
- handler = talloc_zero(NULL, struct device_handler);
- list_init(&handler->unresolved_boot_options);
+ struct discover_device *dev = arg;
- return handler;
-}
+ umount_device(dev);
-void device_handler_add_device(struct device_handler *handler,
- struct discover_device *dev)
-{
- handler->n_devices++;
- handler->devices = talloc_realloc(handler, handler->devices,
- struct discover_device *, handler->n_devices);
- handler->devices[handler->n_devices - 1] = dev;
+ return 0;
}
-#else
-
-static int mount_device(struct discover_device *dev)
+struct discover_device *discover_device_create(struct device_handler *handler,
+ const char *uuid, const char *id)
{
- const char *argv[6];
+ struct discover_device *dev;
- if (!dev->device_path)
- return -1;
+ if (uuid)
+ dev = device_lookup_by_uuid(handler, uuid);
+ else
+ dev = device_lookup_by_id(handler, id);
- if (!dev->mount_path)
- dev->mount_path = join_paths(dev, mount_base(),
- dev->device_path);
+ if (dev)
+ return dev;
- if (pb_mkdir_recursive(dev->mount_path))
- pb_log("couldn't create mount directory %s: %s\n",
- dev->mount_path, strerror(errno));
+ dev = talloc_zero(handler, struct discover_device);
+ dev->device = talloc_zero(dev, struct device);
+ dev->device->id = talloc_strdup(dev->device, id);
+ dev->uuid = talloc_strdup(dev, uuid);
+ list_init(&dev->params);
+ list_init(&dev->boot_options);
- argv[0] = pb_system_apps.mount;
- argv[1] = dev->device_path;
- argv[2] = dev->mount_path;
- argv[3] = "-o";
- argv[4] = "ro";
- argv[5] = NULL;
+ talloc_set_destructor(dev, destroy_device);
- if (pb_run_cmd(argv, 1, 0)) {
+ return dev;
+}
- /* Retry mount without ro option. */
+struct discover_device_param {
+ char *name;
+ char *value;
+ struct list_item list;
+};
- argv[0] = pb_system_apps.mount;
- argv[1] = dev->device_path;
- argv[2] = dev->mount_path;
- argv[3] = NULL;
+void discover_device_set_param(struct discover_device *device,
+ const char *name, const char *value)
+{
+ struct discover_device_param *param;
+ bool found = false;
- if (pb_run_cmd(argv, 1, 0))
- goto out_rmdir;
+ list_for_each_entry(&device->params, param, list) {
+ if (!strcmp(param->name, name)) {
+ found = true;
+ break;
+ }
}
- return 0;
+ if (!found) {
+ if (!value)
+ return;
+ param = talloc(device, struct discover_device_param);
+ param->name = talloc_strdup(param, name);
+ list_add(&device->params, ¶m->list);
+ } else {
+ if (!value) {
+ list_remove(¶m->list);
+ talloc_free(param);
+ return;
+ }
+ talloc_free(param->value);
+ }
-out_rmdir:
- pb_rmdir_recursive(mount_base(), dev->mount_path);
- return -1;
+ param->value = talloc_strdup(param, value);
}
-static int umount_device(struct discover_device *dev)
+const char *discover_device_get_param(struct discover_device *device,
+ const char *name)
{
- int status;
- pid_t pid;
-
- if (!dev->mount_path)
- return 0;
-
- pid = fork();
- if (pid == -1) {
- pb_log("%s: fork failed: %s\n", __func__, strerror(errno));
- return -1;
- }
-
- if (pid == 0) {
- execl(pb_system_apps.umount, pb_system_apps.umount,
- dev->mount_path, NULL);
- exit(EXIT_FAILURE);
- }
+ struct discover_device_param *param;
- if (waitpid(pid, &status, 0) == -1) {
- pb_log("%s: waitpid failed: %s\n", __func__,
- strerror(errno));
- return -1;
+ list_for_each_entry(&device->params, param, list) {
+ if (!strcmp(param->name, name))
+ return param->value;
}
-
- if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
- return -1;
-
- pb_rmdir_recursive(mount_base(), dev->mount_path);
-
- return 0;
+ return NULL;
}
struct device_handler *device_handler_init(struct discover_server *server,
struct waitset *waitset, int dry_run)
{
struct device_handler *handler;
+ int rc;
- handler = talloc(NULL, struct device_handler);
- handler->devices = NULL;
- handler->n_devices = 0;
+ handler = talloc_zero(NULL, struct device_handler);
handler->server = server;
handler->waitset = waitset;
handler->dry_run = dry_run;
- handler->default_boot_option = NULL;
- handler->default_enabled = true;
+ handler->autoboot_enabled = config_get()->autoboot_enabled;
+
list_init(&handler->unresolved_boot_options);
/* set up our mount point base */
parser_init();
- return handler;
-}
-
-static int destroy_device(void *arg)
-{
- struct discover_device *dev = arg;
-
- umount_device(dev);
-
- return 0;
-}
-
-static struct discover_device *find_device(struct device_handler *handler,
- const char *id)
-{
- struct discover_device *dev;
- unsigned int i;
+ if (config_get()->safe_mode)
+ return handler;
- for (i = 0; i < handler->n_devices; i++) {
- dev = handler->devices[i];
- if (!strcmp(dev->device->id, id))
- return dev;
+ rc = device_handler_init_sources(handler);
+ if (rc) {
+ talloc_free(handler);
+ return NULL;
}
- return NULL;
+ return handler;
}
-static struct discover_device *discover_device_create(
- struct device_handler *handler,
- struct discover_context *ctx,
- struct event *event)
+void device_handler_reinit(struct device_handler *handler)
{
- struct discover_device *dev;
- const char *devname;
-
- dev = find_device(handler, event->device);
- if (dev)
- return dev;
+ struct discover_boot_option *opt, *tmp;
+ struct ramdisk_device *ramdisk;
+ unsigned int i;
- dev = talloc_zero(ctx, struct discover_device);
- dev->device = talloc_zero(dev, struct device);
- list_init(&dev->boot_options);
+ device_handler_cancel_default(handler);
- devname = event_get_param(ctx->event, "DEVNAME");
- if (devname)
- dev->device_path = talloc_strdup(dev, devname);
+ /* free unresolved boot options */
+ list_for_each_entry_safe(&handler->unresolved_boot_options,
+ opt, tmp, list)
+ talloc_free(opt);
+ list_init(&handler->unresolved_boot_options);
- dev->device->id = talloc_strdup(dev, event->device);
+ /* drop all devices */
+ for (i = 0; i < handler->n_devices; i++) {
+ discover_server_notify_device_remove(handler->server,
+ handler->devices[i]->device);
+ ramdisk = handler->devices[i]->ramdisk;
+ talloc_free(handler->devices[i]);
+ talloc_free(ramdisk);
+ }
- talloc_set_destructor(dev, destroy_device);
+ talloc_free(handler->devices);
+ handler->devices = NULL;
+ handler->n_devices = 0;
+ talloc_free(handler->ramdisks);
+ handler->ramdisks = NULL;
+ handler->n_ramdisks = 0;
- return dev;
+ device_handler_reinit_sources(handler);
}
-/**
- * device_handler_remove - Remove a device from the handler device array.
- */
-
-static void device_handler_remove(struct device_handler *handler,
- struct discover_device *device)
+void device_handler_remove(struct device_handler *handler,
+ struct discover_device *device)
{
+ struct discover_boot_option *opt, *tmp;
unsigned int i;
+ list_for_each_entry_safe(&device->boot_options, opt, tmp, list) {
+ if (opt == handler->default_boot_option) {
+ pb_log("Default option %s cancelled since device removed",
+ opt->option->name);
+ device_handler_cancel_default(handler);
+ break;
+ }
+ }
+
for (i = 0; i < handler->n_devices; i++)
if (handler->devices[i] == device)
break;
if (i == handler->n_devices) {
- assert(0 && "unknown device");
+ talloc_free(device);
return;
}
+ /* Free any unresolved options, as they're currently allocated
+ * against the handler */
+ list_for_each_entry_safe(&handler->unresolved_boot_options,
+ opt, tmp, list) {
+ if (opt->device != device)
+ continue;
+ list_remove(&opt->list);
+ talloc_free(opt);
+ }
+
+ /* if this is a network device, we have to unregister it from the
+ * network code */
+ if (device->device->type == DEVICE_TYPE_NETWORK)
+ network_unregister_device(handler->network, device);
+
handler->n_devices--;
memmove(&handler->devices[i], &handler->devices[i + 1],
(handler->n_devices - i) * sizeof(handler->devices[0]));
handler->devices = talloc_realloc(handler, handler->devices,
struct discover_device *, handler->n_devices);
- discover_server_notify_device_remove(handler->server, device->device);
+ if (device->notified)
+ discover_server_notify_device_remove(handler->server,
+ device->device);
talloc_free(device);
}
-static void boot_status(void *arg, struct boot_status *status)
+void device_handler_status(struct device_handler *handler,
+ struct status *status)
{
- struct device_handler *handler = arg;
-
discover_server_notify_boot_status(handler->server, status);
}
+static void _device_handler_vstatus(struct device_handler *handler,
+ enum status_type type, const char *fmt, va_list ap)
+{
+ struct status status;
+
+ status.type = type;
+ status.message = talloc_vasprintf(handler, fmt, ap);
+
+ device_handler_status(handler, &status);
+
+ talloc_free(status.message);
+}
+
+static void _device_handler_vdevstatus(struct device_handler *handler,
+ struct discover_device *device, enum status_type type,
+ const char *fmt, va_list ap)
+{
+ char *msg;
+
+ msg = talloc_asprintf(handler, "[%s] %s",
+ device ? device->device->id : "unknown", fmt);
+ _device_handler_vstatus(handler, type, msg, ap);
+ talloc_free(msg);
+}
+
+void device_handler_status_dev_info(struct device_handler *handler,
+ struct discover_device *dev, const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ _device_handler_vdevstatus(handler, dev, STATUS_INFO, fmt, ap);
+ va_end(ap);
+}
+
+void device_handler_status_dev_err(struct device_handler *handler,
+ struct discover_device *dev, const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ _device_handler_vdevstatus(handler, dev, STATUS_ERROR, fmt, ap);
+ va_end(ap);
+}
+
+void device_handler_status_info(struct device_handler *handler,
+ const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ _device_handler_vstatus(handler, STATUS_INFO, fmt, ap);
+ va_end(ap);
+}
+
+void device_handler_status_err(struct device_handler *handler,
+ const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ _device_handler_vstatus(handler, STATUS_ERROR, fmt, ap);
+ va_end(ap);
+}
+
+static void device_handler_boot_status_cb(void *arg, struct status *status)
+{
+ device_handler_status(arg, status);
+}
+
static void countdown_status(struct device_handler *handler,
struct discover_boot_option *opt, unsigned int sec)
{
- struct boot_status status;
+ struct status status;
- status.type = BOOT_STATUS_INFO;
- status.progress = -1;
- status.detail = NULL;
+ status.type = STATUS_INFO;
status.message = talloc_asprintf(handler,
- "Booting %s in %d sec", opt->option->name, sec);
+ _("Booting in %d sec: %s"), sec, opt->option->name);
- discover_server_notify_boot_status(handler->server, &status);
+ device_handler_status(handler, &status);
talloc_free(status.message);
}
if (!handler->default_boot_option)
return 0;
+ if (handler->pending_boot)
+ return 0;
+
opt = handler->default_boot_option;
if (handler->sec_to_boot) {
return 0;
}
+ handler->timeout_waiter = NULL;
+
pb_log("Timeout expired, booting default option %s\n", opt->option->id);
- boot(handler, handler->default_boot_option, NULL,
- handler->dry_run, boot_status, handler);
+ platform_pre_boot();
+
+ handler->pending_boot = boot(handler, handler->default_boot_option,
+ NULL, handler->dry_run, device_handler_boot_status_cb,
+ handler);
+ handler->pending_boot_is_default = true;
return 0;
}
+struct {
+ enum ipmi_bootdev ipmi_type;
+ enum device_type device_type;
+} device_type_map[] = {
+ { IPMI_BOOTDEV_NETWORK, DEVICE_TYPE_NETWORK },
+ { IPMI_BOOTDEV_DISK, DEVICE_TYPE_DISK },
+ { IPMI_BOOTDEV_DISK, DEVICE_TYPE_USB },
+ { IPMI_BOOTDEV_CDROM, DEVICE_TYPE_OPTICAL },
+};
+
+static bool ipmi_device_type_matches(enum ipmi_bootdev ipmi_type,
+ enum device_type device_type)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(device_type_map); i++) {
+ if (device_type_map[i].device_type == device_type)
+ return device_type_map[i].ipmi_type == ipmi_type;
+ }
+
+ return false;
+}
+
+static int autoboot_option_priority(const struct config *config,
+ struct discover_boot_option *opt)
+{
+ enum device_type type = opt->device->device->type;
+ const char *uuid = opt->device->uuid;
+ struct autoboot_option *auto_opt;
+ unsigned int i;
+
+ for (i = 0; i < config->n_autoboot_opts; i++) {
+ auto_opt = &config->autoboot_opts[i];
+ if (auto_opt->boot_type == BOOT_DEVICE_UUID)
+ if (!strcmp(auto_opt->uuid, uuid))
+ return DEFAULT_PRIORITY_LOCAL_FIRST + i;
+
+ if (auto_opt->boot_type == BOOT_DEVICE_TYPE)
+ if (auto_opt->type == type ||
+ auto_opt->type == DEVICE_TYPE_ANY)
+ return DEFAULT_PRIORITY_LOCAL_FIRST + i;
+ }
+
+ return -1;
+}
+
+/*
+ * We have different priorities to resolve conflicts between boot options that
+ * report to be the default for their device. This function assigns a priority
+ * for these options.
+ */
+static enum default_priority default_option_priority(
+ struct discover_boot_option *opt)
+{
+ const struct config *config;
+
+ config = config_get();
+
+ /* We give highest priority to IPMI-configured boot options. If
+ * we have an IPMI bootdev configuration set, then we don't allow
+ * any other defaults */
+ if (config->ipmi_bootdev) {
+ bool ipmi_match = ipmi_device_type_matches(config->ipmi_bootdev,
+ opt->device->device->type);
+ if (ipmi_match)
+ return DEFAULT_PRIORITY_REMOTE;
+
+ pb_debug("handler: disabled default priority due to "
+ "non-matching IPMI type %x\n",
+ config->ipmi_bootdev);
+ return DEFAULT_PRIORITY_DISABLED;
+ }
+
+ /* Next, try to match the option against the user-defined autoboot
+ * options, either by device UUID or type. */
+ if (config->n_autoboot_opts) {
+ int boot_match = autoboot_option_priority(config, opt);
+ if (boot_match > 0)
+ return boot_match;
+ }
+
+ /* If the option didn't match any entry in the array, it is disabled */
+ pb_debug("handler: disabled default priority due to "
+ "non-matching UUID or type\n");
+ return DEFAULT_PRIORITY_DISABLED;
+}
+
static void set_default(struct device_handler *handler,
struct discover_boot_option *opt)
{
- if (handler->default_boot_option)
+ enum default_priority cur_prio, new_prio;
+
+ if (!handler->autoboot_enabled)
return;
- if (!handler->default_enabled)
+ pb_debug("handler: new default option: %s\n", opt->option->id);
+
+ new_prio = default_option_priority(opt);
+
+ /* Anything outside our range prevents a default boot */
+ if (new_prio >= DEFAULT_PRIORITY_DISABLED)
return;
- pb_log("Boot option %s set as default\n", opt->option->id);
+ pb_debug("handler: calculated priority %d\n", new_prio);
+
+ /* Resolve any conflicts: if we have a new default option, it only
+ * replaces the current if it has a higher priority. */
+ if (handler->default_boot_option) {
+
+ cur_prio = handler->default_boot_option_priority;
+
+ if (new_prio < cur_prio) {
+ pb_log("handler: new prio %d beats "
+ "old prio %d for %s\n",
+ new_prio, cur_prio,
+ handler->default_boot_option
+ ->option->id);
+ handler->default_boot_option = opt;
+ handler->default_boot_option_priority = new_prio;
+ /* extend the timeout a little, so the user sees some
+ * indication of the change */
+ handler->sec_to_boot += 2;
+ }
+
+ return;
+ }
+ handler->sec_to_boot = config_get()->autoboot_timeout_sec;
handler->default_boot_option = opt;
- handler->sec_to_boot = DEFAULT_BOOT_TIMEOUT_SEC;
+ handler->default_boot_option_priority = new_prio;
+
+ pb_log("handler: boot option %s set as default, timeout %u sec.\n",
+ opt->option->id, handler->sec_to_boot);
+
default_timeout(handler);
}
return resource_is_resolved(opt->boot_image) &&
resource_is_resolved(opt->initrd) &&
resource_is_resolved(opt->dtb) &&
+ resource_is_resolved(opt->args_sig_file) &&
resource_is_resolved(opt->icon);
}
if (resource_is_resolved(res))
return true;
- pb_log("Attempting to resolve resource %s->%s with parser %s\n",
+ pb_debug("Attempting to resolve resource %s->%s with parser %s\n",
opt->option->id, name, parser->name);
parser->resolve_resource(handler, res);
return resource_resolve(opt->boot_image, "boot_image", opt, handler) &&
resource_resolve(opt->initrd, "initrd", opt, handler) &&
resource_resolve(opt->dtb, "dtb", opt, handler) &&
+ resource_resolve(opt->args_sig_file, "args_sig_file", opt,
+ handler) &&
resource_resolve(opt->icon, "icon", opt, handler);
}
assert(!opt->option->dtb_file);
assert(!opt->option->icon_file);
assert(!opt->option->device_id);
+ assert(!opt->option->args_sig_file);
if (opt->boot_image)
opt->option->boot_image_file = opt->boot_image->url->full;
opt->option->dtb_file = opt->dtb->url->full;
if (opt->icon)
opt->option->icon_file = opt->icon->url->full;
+ if (opt->args_sig_file)
+ opt->option->args_sig_file = opt->args_sig_file->url->full;
opt->option->device_id = opt->device->device->id;
set_default(handler, opt);
}
+static void notify_boot_option(struct device_handler *handler,
+ struct discover_boot_option *opt)
+{
+ struct discover_device *dev = opt->device;
+
+ if (!dev->notified)
+ discover_server_notify_device_add(handler->server,
+ opt->device->device);
+ dev->notified = true;
+ discover_server_notify_boot_option_add(handler->server, opt->option);
+}
+
static void process_boot_option_queue(struct device_handler *handler)
{
struct discover_boot_option *opt, *tmp;
list_for_each_entry_safe(&handler->unresolved_boot_options,
opt, tmp, list) {
- pb_log("queue: attempting resolution for %s\n",
+ pb_debug("queue: attempting resolution for %s\n",
opt->option->id);
if (!boot_option_resolve(opt, handler))
continue;
- pb_log("\tresolved!\n");
+ pb_debug("\tresolved!\n");
list_remove(&opt->list);
list_add_tail(&opt->device->boot_options, &opt->list);
talloc_steal(opt->device, opt);
boot_option_finalise(handler, opt);
- discover_server_notify_boot_option_add(handler->server,
- opt->option);
+ notify_boot_option(handler, opt);
}
}
-/**
- * context_commit - Commit a temporary discovery context to the handler,
- * and notify the clients about any new options / devices
- */
-static void context_commit(struct device_handler *handler,
- struct discover_context *ctx)
+struct discover_context *device_handler_discover_context_create(
+ struct device_handler *handler,
+ struct discover_device *device)
{
- struct discover_device *dev = ctx->device;
- struct discover_boot_option *opt, *tmp;
- unsigned int i, existing_device = 0;
-
- /* do we already have this device? */
- for (i = 0; i < handler->n_devices; i++) {
- if (ctx->device == handler->devices[i]) {
- existing_device = 1;
- break;
- }
- }
+ struct discover_context *ctx;
- /* if not already present, add the device to the handler's array */
- if (!existing_device) {
- handler->n_devices++;
- handler->devices = talloc_realloc(handler, handler->devices,
- struct discover_device *, handler->n_devices);
- handler->devices[handler->n_devices - 1] = dev;
- talloc_steal(handler, dev);
+ ctx = talloc_zero(handler, struct discover_context);
+ ctx->handler = handler;
+ ctx->device = device;
+ list_init(&ctx->boot_options);
- discover_server_notify_device_add(handler->server, dev->device);
+ return ctx;
+}
- /* this new device might be able to resolve existing boot
- * options */
- pb_log("New device %s, processing queue\n", dev->device->id);
- process_boot_option_queue(handler);
- }
+void device_handler_add_device(struct device_handler *handler,
+ struct discover_device *device)
+{
+ handler->n_devices++;
+ handler->devices = talloc_realloc(handler, handler->devices,
+ struct discover_device *, handler->n_devices);
+ handler->devices[handler->n_devices - 1] = device;
+
+ if (device->device->type == DEVICE_TYPE_NETWORK)
+ network_register_device(handler->network, device);
+}
+
+void device_handler_add_ramdisk(struct device_handler *handler,
+ const char *path)
+{
+ struct ramdisk_device *dev;
+ unsigned int i;
+
+ if (!path)
+ return;
+
+ for (i = 0; i < handler->n_ramdisks; i++)
+ if (!strcmp(handler->ramdisks[i]->path, path))
+ return;
+
+ dev = talloc_zero(handler, struct ramdisk_device);
+ if (!dev) {
+ pb_log("Failed to allocate memory to track %s\n", path);
+ return;
+ }
+
+ dev->path = talloc_strdup(handler, path);
+
+ handler->ramdisks = talloc_realloc(handler, handler->ramdisks,
+ struct ramdisk_device *,
+ handler->n_ramdisks + 1);
+ if (!handler->ramdisks) {
+ pb_log("Failed to reallocate memory"
+ "- ramdisk tracking inconsistent!\n");
+ return;
+ }
+
+ handler->ramdisks[i] = dev;
+ i = handler->n_ramdisks++;
+}
+
+struct ramdisk_device *device_handler_get_ramdisk(
+ struct device_handler *handler)
+{
+ unsigned int i;
+ char *name;
+ dev_t id;
+
+ /* Check if free ramdisk exists */
+ for (i = 0; i < handler->n_ramdisks; i++)
+ if (!handler->ramdisks[i]->snapshot &&
+ !handler->ramdisks[i]->origin &&
+ !handler->ramdisks[i]->base)
+ return handler->ramdisks[i];
+
+ /* Otherwise create a new one */
+ name = talloc_asprintf(handler, "/dev/ram%d",
+ handler->n_ramdisks);
+ if (!name) {
+ pb_debug("Failed to allocate memory to name /dev/ram%d",
+ handler->n_ramdisks);
+ return NULL;
+ }
+
+ id = makedev(1, handler->n_ramdisks);
+ if (mknod(name, S_IFBLK, id)) {
+ if (errno == EEXIST) {
+ /* We haven't yet received updates for existing
+ * ramdisks - add and use this one */
+ pb_debug("Using untracked ramdisk %s\n", name);
+ } else {
+ pb_log("Failed to create new ramdisk %s: %s\n",
+ name, strerror(errno));
+ return NULL;
+ }
+ }
+ device_handler_add_ramdisk(handler, name);
+ talloc_free(name);
+
+ return handler->ramdisks[i];
+}
+
+void device_handler_release_ramdisk(struct discover_device *device)
+{
+ struct ramdisk_device *ramdisk = device->ramdisk;
+
+ talloc_free(ramdisk->snapshot);
+ talloc_free(ramdisk->origin);
+ talloc_free(ramdisk->base);
+
+ ramdisk->snapshot = ramdisk->origin = ramdisk->base = NULL;
+ ramdisk->sectors = 0;
+
+ device->ramdisk = NULL;
+}
+
+/* Start discovery on a hotplugged device. The device will be in our devices
+ * array, but has only just been initialised by the hotplug source.
+ */
+int device_handler_discover(struct device_handler *handler,
+ struct discover_device *dev)
+{
+ struct discover_context *ctx;
+ int rc;
+
+ device_handler_status_dev_info(handler, dev,
+ /*
+ * TRANSLATORS: this string will be passed the type of the
+ * device (eg "disk" or "network"), which will be translated
+ * accordingly.
+ */
+ _("Processing new %s device"),
+ device_type_display_name(dev->device->type));
+
+ process_boot_option_queue(handler);
+
+ /* create our context */
+ ctx = device_handler_discover_context_create(handler, dev);
+
+ rc = mount_device(dev);
+ if (rc)
+ goto out;
+
+ /* add this device to our system info */
+ system_info_register_blockdev(dev->device->id, dev->uuid,
+ dev->mount_path);
+
+ /* run the parsers. This will populate the ctx's boot_option list. */
+ iterate_parsers(ctx);
+
+ /* add discovered stuff to the handler */
+ device_handler_discover_context_commit(handler, ctx);
+
+out:
+ talloc_unlink(handler, ctx);
+
+ return 0;
+}
+
+/* Incoming dhcp event */
+int device_handler_dhcp(struct device_handler *handler,
+ struct discover_device *dev, struct event *event)
+{
+ struct discover_context *ctx;
+
+ device_handler_status_dev_info(handler, dev,
+ _("Processing dhcp event"));
+
+ /* create our context */
+ ctx = device_handler_discover_context_create(handler, dev);
+ talloc_steal(ctx, event);
+ ctx->event = event;
+
+ iterate_parsers(ctx);
+
+ device_handler_discover_context_commit(handler, ctx);
+
+ talloc_unlink(handler, ctx);
+
+ return 0;
+}
+
+static struct discover_boot_option *find_boot_option_by_id(
+ struct device_handler *handler, const char *id)
+{
+ unsigned int i;
+
+ for (i = 0; i < handler->n_devices; i++) {
+ struct discover_device *dev = handler->devices[i];
+ struct discover_boot_option *opt;
+
+ list_for_each_entry(&dev->boot_options, opt, list)
+ if (!strcmp(opt->option->id, id))
+ return opt;
+ }
+
+ return NULL;
+}
+
+void device_handler_boot(struct device_handler *handler,
+ struct boot_command *cmd)
+{
+ struct discover_boot_option *opt = NULL;
+
+ if (cmd->option_id && strlen(cmd->option_id))
+ opt = find_boot_option_by_id(handler, cmd->option_id);
+
+ if (handler->pending_boot)
+ boot_cancel(handler->pending_boot);
+
+ platform_pre_boot();
+
+ handler->pending_boot = boot(handler, opt, cmd, handler->dry_run,
+ device_handler_boot_status_cb, handler);
+ handler->pending_boot_is_default = false;
+}
+
+void device_handler_cancel_default(struct device_handler *handler)
+{
+ if (handler->timeout_waiter)
+ waiter_remove(handler->timeout_waiter);
+
+ handler->timeout_waiter = NULL;
+ handler->autoboot_enabled = false;
+
+ /* we only send status if we had a default boot option queued */
+ if (!handler->default_boot_option)
+ return;
+
+ pb_log("Cancelling default boot option\n");
+
+ if (handler->pending_boot && handler->pending_boot_is_default) {
+ boot_cancel(handler->pending_boot);
+ handler->pending_boot = NULL;
+ handler->pending_boot_is_default = false;
+ }
+
+ handler->default_boot_option = NULL;
+
+ device_handler_status_info(handler, _("Default boot cancelled"));
+}
+
+void device_handler_update_config(struct device_handler *handler,
+ struct config *config)
+{
+ int rc;
+
+ rc = config_set(config);
+ if (rc)
+ return;
+
+ discover_server_notify_config(handler->server, config);
+ device_handler_update_lang(config->lang);
+ device_handler_reinit(handler);
+}
+
+static char *device_from_addr(void *ctx, struct pb_url *url)
+{
+ char *ipaddr, *buf, *tok, *dev = NULL;
+ const char *delim = " ";
+ struct sockaddr_in *ip;
+ struct sockaddr_in si;
+ struct addrinfo *res;
+ struct process *p;
+ int rc;
+
+ /* Note: IPv4 only */
+ rc = inet_pton(AF_INET, url->host, &(si.sin_addr));
+ if (rc > 0) {
+ ipaddr = url->host;
+ } else {
+ /* need to turn hostname into a valid IP */
+ rc = getaddrinfo(url->host, NULL, NULL, &res);
+ if (rc) {
+ pb_debug("%s: Invalid URL\n",__func__);
+ return NULL;
+ }
+ ipaddr = talloc_array(ctx,char,INET_ADDRSTRLEN);
+ ip = (struct sockaddr_in *) res->ai_addr;
+ inet_ntop(AF_INET, &(ip->sin_addr), ipaddr, INET_ADDRSTRLEN);
+ freeaddrinfo(res);
+ }
+
+ const char *argv[] = {
+ pb_system_apps.ip,
+ "route", "show", "to", "match",
+ ipaddr,
+ NULL
+ };
+
+ p = process_create(ctx);
+
+ p->path = pb_system_apps.ip;
+ p->argv = argv;
+ p->keep_stdout = true;
+
+ rc = process_run_sync(p);
+
+ if (rc || p->exit_status) {
+ /* ip has complained for some reason; most likely
+ * there is no route to the host - bail out */
+ pb_debug("%s: `ip` returns non-zero exit status\n", __func__);
+ pb_debug("ip buf: %s\n", p->stdout_buf);
+ process_release(p);
+ return NULL;
+ }
+
+ buf = p->stdout_buf;
+ /* If a route is found, ip-route output will be of the form
+ * "... dev DEVNAME ... " */
+ tok = strtok(buf, delim);
+ while (tok) {
+ if (!strcmp(tok, "dev")) {
+ tok = strtok(NULL, delim);
+ dev = talloc_strdup(ctx, tok);
+ break;
+ }
+ tok = strtok(NULL, delim);
+ }
+
+ process_release(p);
+ if (dev)
+ pb_debug("%s: Found interface '%s'\n", __func__,dev);
+ return dev;
+}
+
+void device_handler_process_url(struct device_handler *handler,
+ const char *url, const char *mac, const char *ip)
+{
+ struct discover_context *ctx;
+ struct discover_device *dev;
+ struct pb_url *pb_url;
+ struct event *event;
+ struct param *param;
+
+ if (!handler->network) {
+ device_handler_status_err(handler, _("No network configured"));
+ return;
+ }
+
+ event = talloc(handler, struct event);
+ event->type = EVENT_TYPE_USER;
+ event->action = EVENT_ACTION_URL;
+
+ if (url[strlen(url) - 1] == '/') {
+ event->params = talloc_array(event, struct param, 3);
+ param = &event->params[0];
+ param->name = talloc_strdup(event, "pxepathprefix");
+ param->value = talloc_strdup(event, url);
+ param = &event->params[1];
+ param->name = talloc_strdup(event, "mac");
+ param->value = talloc_strdup(event, mac);
+ param = &event->params[2];
+ param->name = talloc_strdup(event, "ip");
+ param->value = talloc_strdup(event, ip);
+ event->n_params = 3;
+ } else {
+ event->params = talloc_array(event, struct param, 1);
+ param = &event->params[0];
+ param->name = talloc_strdup(event, "pxeconffile");
+ param->value = talloc_strdup(event, url);
+ event->n_params = 1;
+ }
+
+ pb_url = pb_url_parse(event, event->params->value);
+ if (!pb_url || (pb_url->scheme != pb_url_file && !pb_url->host)) {
+ device_handler_status_err(handler, _("Invalid config URL!"));
+ return;
+ }
+
+ if (pb_url->scheme == pb_url_file)
+ event->device = talloc_asprintf(event, "local");
+ else
+ event->device = device_from_addr(event, pb_url);
+
+ if (!event->device) {
+ device_handler_status_err(handler,
+ _("Unable to route to host %s"),
+ pb_url->host);
+ return;
+ }
+
+ dev = discover_device_create(handler, mac, event->device);
+ if (pb_url->scheme == pb_url_file)
+ dev->device->type = DEVICE_TYPE_ANY;
+ ctx = device_handler_discover_context_create(handler, dev);
+ talloc_steal(ctx, event);
+ ctx->event = event;
+
+ iterate_parsers(ctx);
+
+ device_handler_discover_context_commit(handler, ctx);
+
+ talloc_unlink(handler, ctx);
+}
+
+#ifndef PETITBOOT_TEST
+
+/**
+ * context_commit - Commit a temporary discovery context to the handler,
+ * and notify the clients about any new options / devices
+ */
+void device_handler_discover_context_commit(struct device_handler *handler,
+ struct discover_context *ctx)
+{
+ struct discover_device *dev = ctx->device;
+ struct discover_boot_option *opt, *tmp;
+ if (!device_lookup_by_uuid(handler, dev->uuid))
+ device_handler_add_device(handler, dev);
/* move boot options from the context to the device */
list_for_each_entry_safe(&ctx->boot_options, opt, tmp, list) {
list_remove(&opt->list);
+ /* All boot options need at least a kernel image */
+ if (!opt->boot_image || !opt->boot_image->url) {
+ pb_log("boot option %s is missing boot image, ignoring\n",
+ opt->option->id);
+ talloc_free(opt);
+ continue;
+ }
+
if (boot_option_resolve(opt, handler)) {
pb_log("boot option %s is resolved, "
"sending to clients\n",
list_add_tail(&dev->boot_options, &opt->list);
talloc_steal(dev, opt);
boot_option_finalise(handler, opt);
- discover_server_notify_boot_option_add(handler->server,
- opt->option);
+ notify_boot_option(handler, opt);
} else {
if (!opt->source->resolve_resource) {
pb_log("parser %s gave us an unresolved "
}
}
-static int handle_add_udev_event(struct device_handler *handler,
- struct event *event)
+static void device_handler_update_lang(const char *lang)
{
- struct discover_context *ctx;
- struct discover_device *dev;
- const char *param;
- int rc;
+ const char *cur_lang;
- /* create our context */
- ctx = talloc(handler, struct discover_context);
- ctx->event = event;
- list_init(&ctx->boot_options);
+ if (!lang)
+ return;
- /* create our top-level device */
- dev = discover_device_create(handler, ctx, event);
+ cur_lang = setlocale(LC_ALL, NULL);
+ if (cur_lang && !strcmp(cur_lang, lang))
+ return;
- ctx->device = dev;
+ setlocale(LC_ALL, lang);
+}
- /* try to parse UUID and labels */
- param = event_get_param(ctx->event, "ID_FS_UUID");
- if (param)
- dev->uuid = talloc_strdup(dev, param);
+static int device_handler_init_sources(struct device_handler *handler)
+{
+ /* init our device sources: udev, network and user events */
+ handler->udev = udev_init(handler, handler->waitset);
+ if (!handler->udev)
+ return -1;
- param = event_get_param(ctx->event, "ID_FS_LABEL");
- if (param)
- dev->label = talloc_strdup(dev, param);
+ handler->network = network_init(handler, handler->waitset,
+ handler->dry_run);
+ if (!handler->network)
+ return -1;
- rc = mount_device(dev);
- if (rc) {
- talloc_free(ctx);
- return 0;
- }
+ handler->user_event = user_event_init(handler, handler->waitset);
+ if (!handler->user_event)
+ return -1;
- /* run the parsers. This will populate the ctx's boot_option list. */
- iterate_parsers(ctx, CONF_METHOD_LOCAL_FILE);
+ return 0;
+}
- /* add discovered stuff to the handler */
- context_commit(handler, ctx);
+static void device_handler_reinit_sources(struct device_handler *handler)
+{
+ /* if we haven't initialised sources previously (becuase we started in
+ * safe mode), then init once here. */
+ if (!(handler->udev || handler->network || handler->user_event)) {
+ device_handler_init_sources(handler);
+ return;
+ }
- talloc_free(ctx);
+ udev_reinit(handler->udev);
- return 0;
+ network_shutdown(handler->network);
+ handler->network = network_init(handler, handler->waitset,
+ handler->dry_run);
}
-static int handle_remove_udev_event(struct device_handler *handler,
- struct event *event)
+static inline const char *get_device_path(struct discover_device *dev)
{
- struct discover_device *dev;
+ return dev->ramdisk ? dev->ramdisk->snapshot : dev->device_path;
+}
- dev = find_device(handler, event->device);
- if (!dev)
- return 0;
+static char *check_subvols(struct discover_device *dev)
+{
+ const char *fstype = discover_device_get_param(dev, "ID_FS_TYPE");
+ struct stat sb;
+ char *path;
+ int rc;
- /* remove device from handler device array */
- device_handler_remove(handler, dev);
+ if (strncmp(fstype, "btrfs", strlen("btrfs")))
+ return dev->mount_path;
- return 0;
+ /* On btrfs a device's root may be under a subvolume path */
+ path = join_paths(dev, dev->mount_path, "@");
+ rc = stat(path, &sb);
+ if (!rc && S_ISDIR(sb.st_mode)) {
+ pb_debug("Using '%s' for btrfs root path\n", path);
+ return path;
+ }
+
+ talloc_free(path);
+ return dev->mount_path;
}
-static int handle_add_user_event(struct device_handler *handler,
- struct event *event)
+static bool check_existing_mount(struct discover_device *dev)
{
- struct discover_context *ctx;
- struct discover_device *dev;
+ struct stat devstat, mntstat;
+ const char *device_path;
+ struct mntent *mnt;
+ FILE *fp;
int rc;
- assert(event->device);
+ device_path = get_device_path(dev);
- ctx = talloc(handler, struct discover_context);
- ctx->event = event;
- list_init(&ctx->boot_options);
+ rc = stat(device_path, &devstat);
+ if (rc) {
+ pb_debug("%s: stat failed: %s\n", __func__, strerror(errno));
+ return false;
+ }
- dev = discover_device_create(handler, ctx, event);
- ctx->device = dev;
+ if (!S_ISBLK(devstat.st_mode)) {
+ pb_debug("%s: %s isn't a block device?\n", __func__,
+ dev->device_path);
+ return false;
+ }
- rc = parse_user_event(ctx, event);
+ fp = fopen("/proc/self/mounts", "r");
- if (!rc)
- context_commit(handler, ctx);
+ for (;;) {
+ mnt = getmntent(fp);
+ if (!mnt)
+ break;
- return rc;
-}
+ if (!mnt->mnt_fsname || mnt->mnt_fsname[0] != '/')
+ continue;
-static int handle_remove_user_event(struct device_handler *handler,
- struct event *event)
-{
- struct discover_device *dev = find_device(handler, event->device);
+ rc = stat(mnt->mnt_fsname, &mntstat);
+ if (rc)
+ continue;
- if (!dev)
- return 0;
+ if (!S_ISBLK(mntstat.st_mode))
+ continue;
- /* remove device from handler device array */
- device_handler_remove(handler, dev);
+ if (mntstat.st_rdev == devstat.st_rdev) {
+ dev->mount_path = talloc_strdup(dev, mnt->mnt_dir);
+ dev->root_path = check_subvols(dev);
+ dev->mounted_rw = !!hasmntopt(mnt, "rw");
+ dev->mounted = true;
+ dev->unmount = false;
+
+ pb_debug("%s: %s is already mounted (r%c) at %s\n",
+ __func__, dev->device_path,
+ dev->mounted_rw ? 'w' : 'o',
+ mnt->mnt_dir);
+ break;
+ }
+ }
- return 0;
+ fclose(fp);
+
+ return mnt != NULL;
}
-static enum conf_method parse_conf_method(const char *str)
+/*
+ * Attempt to mount a filesystem safely, while handling certain filesytem-
+ * specific options
+ */
+static int try_mount(const char *device_path, const char *mount_path,
+ const char *fstype, unsigned long flags,
+ bool have_snapshot)
{
+ const char *fs, *safe_opts;
+ int rc;
- if (!strcasecmp(str, "dhcp")) {
- return CONF_METHOD_DHCP;
- }
- return CONF_METHOD_UNKNOWN;
+ /* Mount ext3 as ext4 instead so 'norecovery' can be used */
+ if (strncmp(fstype, "ext3", strlen("ext3")) == 0) {
+ pb_debug("Mounting ext3 filesystem as ext4\n");
+ fs = "ext4";
+ } else
+ fs = fstype;
+
+ if (strncmp(fs, "xfs", strlen("xfs")) == 0 ||
+ strncmp(fs, "ext4", strlen("ext4")) == 0)
+ safe_opts = "norecovery";
+ else
+ safe_opts = NULL;
+
+ errno = 0;
+ /* If no snapshot is available don't attempt recovery */
+ if (!have_snapshot)
+ return mount(device_path, mount_path, fs, flags, safe_opts);
+
+ rc = mount(device_path, mount_path, fs, flags, NULL);
+
+ if (!rc)
+ return rc;
+
+ /* Mounting failed; some filesystems will fail to mount if a recovery
+ * journal exists (eg. cross-endian XFS), so try again with norecovery
+ * where that option is available.
+ * If mounting read-write just return the error as norecovery is not a
+ * valid option */
+ if ((flags & MS_RDONLY) != MS_RDONLY || !safe_opts)
+ return rc;
+
+ errno = 0;
+ return mount(device_path, mount_path, fs, flags, safe_opts);
}
-static int handle_conf_user_event(struct device_handler *handler,
- struct event *event)
+static int mount_device(struct discover_device *dev)
{
- struct discover_context *ctx;
- struct discover_device *dev;
- enum conf_method method;
- const char *val;
+ const char *fstype, *device_path;
+ int rc;
- ctx = talloc(handler, struct discover_context);
- ctx->event = event;
- list_init(&ctx->boot_options);
+ if (!dev->device_path)
+ return -1;
- val = event_get_param(event, "url");
- if (!val) {
- talloc_free(ctx);
+ if (dev->mounted)
return 0;
- }
- ctx->conf_url = pb_url_parse(ctx, val);
- if (!ctx->conf_url) {
- talloc_free(ctx);
+ if (check_existing_mount(dev))
return 0;
- }
- val = event_get_param(event, "method");
- if (!val) {
- talloc_free(ctx);
+ fstype = discover_device_get_param(dev, "ID_FS_TYPE");
+ if (!fstype)
return 0;
+
+ dev->mount_path = join_paths(dev, mount_base(),
+ dev->device_path);
+
+ if (pb_mkdir_recursive(dev->mount_path)) {
+ pb_log("couldn't create mount directory %s: %s\n",
+ dev->mount_path, strerror(errno));
+ goto err_free;
}
- method = parse_conf_method(val);
- if (method == CONF_METHOD_UNKNOWN) {
- talloc_free(ctx);
+ device_path = get_device_path(dev);
+
+ pb_log("mounting device %s read-only\n", dev->device_path);
+ rc = try_mount(device_path, dev->mount_path, fstype,
+ MS_RDONLY | MS_SILENT, dev->ramdisk);
+
+ if (!rc) {
+ dev->mounted = true;
+ dev->mounted_rw = false;
+ dev->unmount = true;
+ dev->root_path = check_subvols(dev);
return 0;
}
- dev = discover_device_create(handler, ctx, event);
- ctx->device = dev;
+ pb_log("couldn't mount device %s: mount failed: %s\n",
+ device_path, strerror(errno));
- iterate_parsers(ctx, method);
+ /* If mount fails clean up any snapshot */
+ devmapper_destroy_snapshot(dev);
- context_commit(handler, ctx);
+ pb_rmdir_recursive(mount_base(), dev->mount_path);
+err_free:
+ talloc_free(dev->mount_path);
+ dev->mount_path = NULL;
+ return -1;
+}
+
+static int umount_device(struct discover_device *dev)
+{
+ const char *device_path;
+ int rc;
+
+ if (!dev->mounted || !dev->unmount)
+ return 0;
+
+ device_path = get_device_path(dev);
+
+ pb_log("unmounting device %s\n", device_path);
+ rc = umount(dev->mount_path);
+ if (rc)
+ return -1;
+
+ dev->mounted = false;
+ devmapper_destroy_snapshot(dev);
+
+ pb_rmdir_recursive(mount_base(), dev->mount_path);
+
+ talloc_free(dev->mount_path);
+ dev->mount_path = NULL;
+ dev->root_path = NULL;
return 0;
}
-typedef int (*event_handler)(struct device_handler *, struct event *);
+int device_request_write(struct discover_device *dev, bool *release)
+{
+ const char *fstype, *device_path;
+ const struct config *config;
+ int rc;
-static event_handler handlers[EVENT_TYPE_MAX][EVENT_ACTION_MAX] = {
- [EVENT_TYPE_UDEV] = {
- [EVENT_ACTION_ADD] = handle_add_udev_event,
- [EVENT_ACTION_REMOVE] = handle_remove_udev_event,
- },
- [EVENT_TYPE_USER] = {
- [EVENT_ACTION_ADD] = handle_add_user_event,
- [EVENT_ACTION_REMOVE] = handle_remove_user_event,
- [EVENT_ACTION_CONF] = handle_conf_user_event,
- }
-};
+ *release = false;
-int device_handler_event(struct device_handler *handler,
- struct event *event)
-{
- if (event->type >= EVENT_TYPE_MAX ||
- event->action >= EVENT_ACTION_MAX ||
- !handlers[event->type][event->action]) {
- pb_log("%s unknown type/action: %d/%d\n", __func__,
- event->type, event->action);
+ config = config_get();
+ if (!config->allow_writes)
+ return -1;
+
+ if (!dev->mounted)
+ return -1;
+
+ if (dev->mounted_rw)
return 0;
+
+ fstype = discover_device_get_param(dev, "ID_FS_TYPE");
+
+ device_path = get_device_path(dev);
+
+ pb_log("remounting device %s read-write\n", device_path);
+
+ rc = umount(dev->mount_path);
+ if (rc) {
+ pb_log("Failed to unmount %s: %s\n",
+ dev->mount_path, strerror(errno));
+ return -1;
}
- return handlers[event->type][event->action](handler, event);
+ rc = try_mount(device_path, dev->mount_path, fstype,
+ MS_SILENT, dev->ramdisk);
+ if (rc)
+ goto mount_ro;
+
+ dev->mounted_rw = true;
+ *release = true;
+ return 0;
+
+mount_ro:
+ pb_log("Unable to remount device %s read-write: %s\n",
+ device_path, strerror(errno));
+ rc = try_mount(device_path, dev->mount_path, fstype,
+ MS_RDONLY | MS_SILENT, dev->ramdisk);
+ if (rc)
+ pb_log("Unable to recover mount for %s: %s\n",
+ device_path, strerror(errno));
+ return -1;
}
-static struct discover_boot_option *find_boot_option_by_id(
- struct device_handler *handler, const char *id)
+void device_release_write(struct discover_device *dev, bool release)
{
- unsigned int i;
+ const char *fstype, *device_path;
- for (i = 0; i < handler->n_devices; i++) {
- struct discover_device *dev = handler->devices[i];
- struct discover_boot_option *opt;
+ if (!release)
+ return;
- list_for_each_entry(&dev->boot_options, opt, list)
- if (!strcmp(opt->option->id, id))
- return opt;
+ device_path = get_device_path(dev);
+
+ fstype = discover_device_get_param(dev, "ID_FS_TYPE");
+
+ pb_log("remounting device %s read-only\n", device_path);
+
+ if (umount(dev->mount_path)) {
+ pb_log("Failed to unmount %s\n", dev->mount_path);
+ return;
}
+ dev->mounted_rw = dev->mounted = false;
- return NULL;
+ if (dev->ramdisk) {
+ devmapper_merge_snapshot(dev);
+ /* device_path becomes stale after merge */
+ device_path = get_device_path(dev);
+ }
+
+ if (try_mount(device_path, dev->mount_path, fstype,
+ MS_RDONLY | MS_SILENT, dev->ramdisk))
+ pb_log("Failed to remount %s read-only: %s\n",
+ device_path, strerror(errno));
+ else
+ dev->mounted = true;
}
-void device_handler_boot(struct device_handler *handler,
- struct boot_command *cmd)
+void device_sync_snapshots(struct device_handler *handler, const char *device)
{
- struct discover_boot_option *opt;
+ struct discover_device *dev = NULL;
+ unsigned int i;
- opt = find_boot_option_by_id(handler, cmd->option_id);
+ if (device) {
+ /* Find matching device and sync */
+ dev = device_lookup_by_name(handler, device);
+ if (!dev) {
+ pb_log("%s: device name '%s' unrecognised\n",
+ __func__, device);
+ return;
+ }
+ if (dev->ramdisk)
+ device_release_write(dev, true);
+ else
+ pb_log("%s has no snapshot to merge, skipping\n",
+ dev->device->id);
+ return;
+ }
- boot(handler, opt, cmd, handler->dry_run, boot_status, handler);
+ /* Otherwise sync all relevant devices */
+ for (i = 0; i < handler->n_devices; i++) {
+ dev = handler->devices[i];
+ if (dev->device->type != DEVICE_TYPE_DISK &&
+ dev->device->type != DEVICE_TYPE_USB)
+ continue;
+ if (dev->ramdisk)
+ device_release_write(dev, true);
+ else
+ pb_log("%s has no snapshot to merge, skipping\n",
+ dev->device->id);
+ }
}
-void device_handler_cancel_default(struct device_handler *handler)
+#else
+
+void device_handler_discover_context_commit(
+ struct device_handler *handler __attribute__((unused)),
+ struct discover_context *ctx __attribute__((unused)))
{
- struct boot_status status;
+ pb_log("%s stubbed out for test cases\n", __func__);
+}
- if (handler->timeout_waiter)
- waiter_remove(handler->timeout_waiter);
+static void device_handler_update_lang(const char *lang __attribute__((unused)))
+{
+}
- handler->timeout_waiter = NULL;
- handler->default_enabled = false;
+static int device_handler_init_sources(
+ struct device_handler *handler __attribute__((unused)))
+{
+ return 0;
+}
- /* we only send status if we had a default boot option queued */
- if (!handler->default_boot_option)
- return;
+static void device_handler_reinit_sources(
+ struct device_handler *handler __attribute__((unused)))
+{
+}
- pb_log("Cancelling default boot option\n");
+static int umount_device(struct discover_device *dev __attribute__((unused)))
+{
+ return 0;
+}
- handler->default_boot_option = NULL;
+static int __attribute__((unused)) mount_device(
+ struct discover_device *dev __attribute__((unused)))
+{
+ return 0;
+}
- status.type = BOOT_STATUS_INFO;
- status.progress = -1;
- status.detail = NULL;
- status.message = "Default boot cancelled";
+int device_request_write(struct discover_device *dev __attribute__((unused)),
+ bool *release)
+{
+ *release = true;
+ return 0;
+}
- discover_server_notify_boot_status(handler->server, &status);
+void device_release_write(struct discover_device *dev __attribute__((unused)),
+ bool release __attribute__((unused)))
+{
}
+
+void device_sync_snapshots(
+ struct device_handler *handler __attribute__((unused)),
+ const char *device __attribute__((unused)))
+{
+}
+
#endif
projects / petitboot / blobdiff