-
#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 <pb-protocol/pb-protocol.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 "user-event.h"
+#include "platform.h"
#include "event.h"
#include "parser.h"
-#include "udev.h"
+#include "resource.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,
+};
-#define MOUNT_BIN "/bin/mount"
+struct device_handler {
+ struct discover_server *server;
+ int dry_run;
-#define UMOUNT_BIN "/bin/umount"
+ struct pb_udev *udev;
+ struct network *network;
+ struct user_event *user_event;
-struct device_handler {
- struct discover_server *server;
+ struct discover_device **devices;
+ unsigned int n_devices;
- struct device **devices;
- unsigned int n_devices;
+ struct waitset *waitset;
+ struct waiter *timeout_waiter;
+ bool autoboot_enabled;
+ unsigned int sec_to_boot;
- struct list contexts;
-};
+ struct discover_boot_option *default_boot_option;
+ int default_boot_option_priority;
-struct mount_map {
- char *device_path;
- char *mount_point;
+ 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)
+{
+ boot_option->source = ctx->parser;
+ list_add_tail(&ctx->boot_options, &boot_option->list);
+ talloc_steal(ctx, boot_option);
+}
+
/**
- * device_handler_add - Add a device to the handler device array.
+ * device_handler_get_device_count - Get the count of current handler devices.
*/
-static void device_handler_add(struct device_handler *handler,
- struct device *device)
+int device_handler_get_device_count(const struct device_handler *handler)
{
- handler->n_devices++;
- handler->devices = talloc_realloc(handler, handler->devices,
- struct device *, handler->n_devices);
- handler->devices[handler->n_devices - 1] = device;
+ return handler->n_devices;
}
/**
- * device_handler_remove - Remove a device from the handler device array.
+ * device_handler_get_device - Get a handler device by index.
*/
-static void device_handler_remove(struct device_handler *handler,
- struct device *device)
+const struct discover_device *device_handler_get_device(
+ const struct device_handler *handler, unsigned int index)
+{
+ if (index >= handler->n_devices) {
+ assert(0 && "bad index");
+ return NULL;
+ }
+
+ return handler->devices[index];
+}
+
+struct discover_boot_option *discover_boot_option_create(
+ struct discover_context *ctx,
+ struct discover_device *device)
+{
+ struct discover_boot_option *opt;
+
+ opt = talloc_zero(ctx, struct discover_boot_option);
+ opt->option = talloc_zero(opt, struct boot_option);
+ opt->device = device;
+
+ return opt;
+}
+
+static int device_match_uuid(struct discover_device *dev, const char *uuid)
+{
+ return dev->uuid && !strcmp(dev->uuid, uuid);
+}
+
+static int device_match_label(struct discover_device *dev, const char *label)
+{
+ return dev->label && !strcmp(dev->label, label);
+}
+
+static int device_match_id(struct discover_device *dev, const char *id)
+{
+ 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 *),
+ const char *str)
+{
+ struct discover_device *dev;
+ unsigned int i;
+
+ if (!str)
+ return NULL;
+
+ for (i = 0; i < device_handler->n_devices; i++) {
+ dev = device_handler->devices[i];
+
+ if (match_fn(dev, str))
+ return dev;
+ }
+
+ return NULL;
+}
+
+struct discover_device *device_lookup_by_name(struct device_handler *handler,
+ const char *name)
+{
+ if (!strncmp(name, "/dev/", strlen("/dev/")))
+ name += strlen("/dev/");
+
+ return device_lookup_by_id(handler, name);
+}
+
+struct discover_device *device_lookup_by_uuid(
+ struct device_handler *device_handler,
+ const char *uuid)
+{
+ return device_lookup(device_handler, device_match_uuid, uuid);
+}
+
+struct discover_device *device_lookup_by_label(
+ struct device_handler *device_handler,
+ const char *label)
+{
+ return device_lookup(device_handler, device_match_label, label);
+}
+
+struct discover_device *device_lookup_by_id(
+ struct device_handler *device_handler,
+ const char *id)
+{
+ 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);
+}
+
+static int destroy_device(void *arg)
+{
+ struct discover_device *dev = arg;
+
+ umount_device(dev);
+
+ return 0;
+}
+
+struct discover_device *discover_device_create(struct device_handler *handler,
+ const char *id)
+{
+ struct discover_device *dev;
+
+ dev = device_lookup_by_id(handler, id);
+ if (dev)
+ return dev;
+
+ dev = talloc_zero(handler, struct discover_device);
+ dev->device = talloc_zero(dev, struct device);
+ dev->device->id = talloc_strdup(dev->device, id);
+ list_init(&dev->params);
+ list_init(&dev->boot_options);
+
+ talloc_set_destructor(dev, destroy_device);
+
+ return dev;
+}
+
+struct discover_device_param {
+ char *name;
+ char *value;
+ struct list_item list;
+};
+
+void discover_device_set_param(struct discover_device *device,
+ const char *name, const char *value)
+{
+ struct discover_device_param *param;
+ bool found = false;
+
+ list_for_each_entry(&device->params, param, list) {
+ if (!strcmp(param->name, name)) {
+ found = true;
+ break;
+ }
+ }
+
+ 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);
+ }
+
+ param->value = talloc_strdup(param, value);
+}
+
+const char *discover_device_get_param(struct discover_device *device,
+ const char *name)
+{
+ struct discover_device_param *param;
+
+ list_for_each_entry(&device->params, param, list) {
+ if (!strcmp(param->name, name))
+ return param->value;
+ }
+ 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_zero(NULL, struct device_handler);
+ handler->server = server;
+ handler->waitset = waitset;
+ handler->dry_run = dry_run;
+ handler->autoboot_enabled = config_get()->autoboot_enabled;
+
+ list_init(&handler->unresolved_boot_options);
+
+ /* set up our mount point base */
+ pb_mkdir_recursive(mount_base());
+
+ parser_init();
+
+ if (config_get()->safe_mode)
+ return handler;
+
+ rc = device_handler_init_sources(handler);
+ if (rc) {
+ talloc_free(handler);
+ return NULL;
+ }
+
+ return handler;
+}
+
+void device_handler_reinit(struct device_handler *handler)
{
+ struct discover_boot_option *opt, *tmp;
+ unsigned int i;
+
+ device_handler_cancel_default(handler);
+
+ /* 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);
+
+ /* drop all devices */
+ for (i = 0; i < handler->n_devices; i++)
+ discover_server_notify_device_remove(handler->server,
+ handler->devices[i]->device);
+
+ talloc_free(handler->devices);
+ handler->devices = NULL;
+ handler->n_devices = 0;
+
+ device_handler_reinit_sources(handler);
+}
+
+void device_handler_remove(struct device_handler *handler,
+ struct discover_device *device)
+{
+ struct discover_boot_option *opt, *tmp;
unsigned int i;
for (i = 0; i < handler->n_devices; i++)
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 device *, handler->n_devices);
+ struct discover_device *, handler->n_devices);
+
+ if (device->notified)
+ discover_server_notify_device_remove(handler->server,
+ device->device);
+
+ talloc_free(device);
}
-/**
- * device_handler_find - Find a handler device by id.
- */
+static void boot_status(void *arg, struct boot_status *status)
+{
+ struct device_handler *handler = arg;
+
+ discover_server_notify_boot_status(handler->server, status);
+}
-static struct device *device_handler_find(struct device_handler *handler,
- const char *id)
+static void countdown_status(struct device_handler *handler,
+ struct discover_boot_option *opt, unsigned int sec)
{
- unsigned int i;
+ struct boot_status status;
- assert(id);
+ status.type = BOOT_STATUS_INFO;
+ status.progress = -1;
+ status.detail = NULL;
+ status.message = talloc_asprintf(handler,
+ _("Booting in %d sec: %s"), sec, opt->option->name);
- for (i = 0; i < handler->n_devices; i++)
- if (handler->devices[i]->id
- && streq(handler->devices[i]->id, id))
- return handler->devices[i];
+ discover_server_notify_boot_status(handler->server, &status);
- pb_log("%s: unknown device: %s\n", __func__, id);
- return NULL;
+ talloc_free(status.message);
}
-/**
- * device_handler_get_device_count - Get the count of current handler devices.
- */
+static int default_timeout(void *arg)
+{
+ struct device_handler *handler = arg;
+ struct discover_boot_option *opt;
-int device_handler_get_device_count(const struct device_handler *handler)
+ if (!handler->default_boot_option)
+ return 0;
+
+ if (handler->pending_boot)
+ return 0;
+
+ opt = handler->default_boot_option;
+
+ if (handler->sec_to_boot) {
+ countdown_status(handler, opt, handler->sec_to_boot);
+ handler->sec_to_boot--;
+ handler->timeout_waiter = waiter_register_timeout(
+ handler->waitset, 1000,
+ default_timeout, handler);
+ return 0;
+ }
+
+ handler->timeout_waiter = NULL;
+
+ pb_log("Timeout expired, booting default option %s\n", opt->option->id);
+
+ handler->pending_boot = boot(handler, handler->default_boot_option,
+ NULL, handler->dry_run, boot_status, 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_CDROM, DEVICE_TYPE_OPTICAL },
+};
+
+static bool ipmi_device_type_matches(enum ipmi_bootdev ipmi_type,
+ enum device_type device_type)
{
- return handler->n_devices;
+ 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;
}
-/**
- * device_handler_get_device - Get a handler device by index.
- */
+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;
-const struct device *device_handler_get_device(
- const struct device_handler *handler, unsigned int index)
+ 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)
{
- if (index >= handler->n_devices) {
- assert(0 && "bad index");
- return NULL;
+ 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;
}
- return handler->devices[index];
+ /* 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 setup_device_links(struct discover_context *ctx)
-{
- struct link {
- char *env, *dir;
- } *link, links[] = {
- {
- .env = "ID_FS_UUID",
- .dir = "disk/by-uuid"
- },
- {
- .env = "ID_FS_LABEL",
- .dir = "disk/by-label"
- },
- {
- .env = NULL
- }
- };
+static void set_default(struct device_handler *handler,
+ struct discover_boot_option *opt)
+{
+ enum default_priority cur_prio, new_prio;
- for (link = links; link->env; link++) {
- char *enc, *dir, *path;
- const char *value;
+ if (!handler->autoboot_enabled)
+ return;
- value = event_get_param(ctx->event, link->env);
- if (!value || !*value)
- continue;
+ pb_debug("handler: new default option: %s\n", opt->option->id);
- enc = encode_label(ctx, value);
- dir = join_paths(ctx, mount_base(), link->dir);
- path = join_paths(ctx, dir, value);
-
- if (!pb_mkdir_recursive(dir)) {
- unlink(path);
- if (symlink(ctx->mount_path, path)) {
- pb_log("symlink(%s,%s): %s\n",
- ctx->mount_path, path,
- strerror(errno));
- talloc_free(path);
- } else {
- int i = ctx->n_links++;
- ctx->links = talloc_realloc(ctx,
- ctx->links, char *,
- ctx->n_links);
- ctx->links[i] = path;
- }
+ new_prio = default_option_priority(opt);
+
+ /* Anything outside our range prevents a default boot */
+ if (new_prio >= DEFAULT_PRIORITY_DISABLED)
+ return;
+ 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;
}
- talloc_free(dir);
- talloc_free(enc);
+ return;
}
+
+ handler->sec_to_boot = config_get()->autoboot_timeout_sec;
+ handler->default_boot_option = opt;
+ 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);
}
-static void remove_device_links(struct discover_context *ctx)
+static bool resource_is_resolved(struct resource *res)
{
- int i;
+ return !res || res->resolved;
+}
- for (i = 0; i < ctx->n_links; i++)
- unlink(ctx->links[i]);
+/* We only use this in an assert, which will disappear if we're compiling
+ * with NDEBUG, so we need the 'used' attribute for these builds */
+static bool __attribute__((used)) boot_option_is_resolved(
+ struct discover_boot_option *opt)
+{
+ return resource_is_resolved(opt->boot_image) &&
+ resource_is_resolved(opt->initrd) &&
+ resource_is_resolved(opt->dtb) &&
+ resource_is_resolved(opt->icon);
}
-static int mount_device(struct discover_context *ctx)
+static bool resource_resolve(struct resource *res, const char *name,
+ struct discover_boot_option *opt,
+ struct device_handler *handler)
{
- const char *mountpoint;
- const char *argv[6];
+ struct parser *parser = opt->source;
- if (!ctx->mount_path) {
- mountpoint = mountpoint_for_device(ctx->device_path);
- ctx->mount_path = talloc_strdup(ctx, mountpoint);
- }
+ if (resource_is_resolved(res))
+ return true;
- if (pb_mkdir_recursive(ctx->mount_path))
- pb_log("couldn't create mount directory %s: %s\n",
- ctx->mount_path, strerror(errno));
+ pb_debug("Attempting to resolve resource %s->%s with parser %s\n",
+ opt->option->id, name, parser->name);
+ parser->resolve_resource(handler, res);
- argv[0] = MOUNT_BIN;
- argv[1] = ctx->device_path;
- argv[2] = ctx->mount_path;
- argv[3] = "-o";
- argv[4] = "ro";
- argv[5] = NULL;
+ return res->resolved;
+}
- if (pb_run_cmd(argv))
- goto out_rmdir;
+static bool boot_option_resolve(struct discover_boot_option *opt,
+ struct device_handler *handler)
+{
+ 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->icon, "icon", opt, handler);
+}
- setup_device_links(ctx);
- return 0;
+static void boot_option_finalise(struct device_handler *handler,
+ struct discover_boot_option *opt)
+{
+ assert(boot_option_is_resolved(opt));
+
+ /* check that the parsers haven't set any of the final data */
+ assert(!opt->option->boot_image_file);
+ assert(!opt->option->initrd_file);
+ assert(!opt->option->dtb_file);
+ assert(!opt->option->icon_file);
+ assert(!opt->option->device_id);
+
+ if (opt->boot_image)
+ opt->option->boot_image_file = opt->boot_image->url->full;
+ if (opt->initrd)
+ opt->option->initrd_file = opt->initrd->url->full;
+ if (opt->dtb)
+ opt->option->dtb_file = opt->dtb->url->full;
+ if (opt->icon)
+ opt->option->icon_file = opt->icon->url->full;
+
+ opt->option->device_id = opt->device->device->id;
+
+ if (opt->option->is_default)
+ set_default(handler, opt);
+}
-out_rmdir:
- pb_rmdir_recursive(mount_base(), ctx->mount_path);
- return -1;
+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 int umount_device(struct discover_context *ctx)
+static void process_boot_option_queue(struct device_handler *handler)
{
- int status;
- pid_t pid;
+ struct discover_boot_option *opt, *tmp;
- remove_device_links(ctx);
+ list_for_each_entry_safe(&handler->unresolved_boot_options,
+ opt, tmp, list) {
- pid = fork();
- if (pid == -1) {
- pb_log("%s: fork failed: %s\n", __func__, strerror(errno));
- return -1;
- }
+ pb_debug("queue: attempting resolution for %s\n",
+ opt->option->id);
- if (pid == 0) {
- execl(UMOUNT_BIN, UMOUNT_BIN, ctx->mount_path, NULL);
- exit(EXIT_FAILURE);
+ if (!boot_option_resolve(opt, handler))
+ continue;
+
+ 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);
+ notify_boot_option(handler, opt);
}
+}
- if (waitpid(pid, &status, 0) == -1) {
- pb_log("%s: waitpid failed: %s\n", __func__,
- strerror(errno));
- return -1;
+struct discover_context *device_handler_discover_context_create(
+ struct device_handler *handler,
+ struct discover_device *device)
+{
+ struct discover_context *ctx;
+
+ ctx = talloc_zero(handler, struct discover_context);
+ ctx->device = device;
+ ctx->network = handler->network;
+ list_init(&ctx->boot_options);
+
+ return ctx;
+}
+
+/**
+ * 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_id(handler, dev->device->id))
+ 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);
+
+ if (boot_option_resolve(opt, handler)) {
+ pb_log("boot option %s is resolved, "
+ "sending to clients\n",
+ opt->option->id);
+ list_add_tail(&dev->boot_options, &opt->list);
+ talloc_steal(dev, opt);
+ boot_option_finalise(handler, opt);
+ notify_boot_option(handler, opt);
+ } else {
+ if (!opt->source->resolve_resource) {
+ pb_log("parser %s gave us an unresolved "
+ "resource (%s), but no way to "
+ "resolve it\n",
+ opt->source->name, opt->option->id);
+ talloc_free(opt);
+ } else {
+ pb_log("boot option %s is unresolved, "
+ "adding to queue\n",
+ opt->option->id);
+ list_add(&handler->unresolved_boot_options,
+ &opt->list);
+ talloc_steal(handler, opt);
+ }
+ }
}
+}
- if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
- return -1;
+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;
- pb_rmdir_recursive(mount_base(), ctx->mount_path);
+ if (device->device->type == DEVICE_TYPE_NETWORK)
+ network_register_device(handler->network, device);
+}
+
+/* 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;
+ struct boot_status *status;
+ int rc;
+
+ status = talloc_zero(handler, struct boot_status);
+ status->type = BOOT_STATUS_INFO;
+ status->message = talloc_asprintf(status, "Processing %s device %s",
+ device_type_display_name(dev->device->type),
+ dev->device->id);
+ boot_status(handler, status);
+
+ 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:
+ status->message = talloc_asprintf(status,"Processing %s complete\n",
+ dev->device->id);
+ boot_status(handler, status);
+
+ talloc_free(status);
+ talloc_free(ctx);
return 0;
}
-static struct discover_context *find_context(struct device_handler *handler,
- const char *id)
+/* Incoming dhcp event */
+int device_handler_dhcp(struct device_handler *handler,
+ struct discover_device *dev, struct event *event)
{
struct discover_context *ctx;
+ struct boot_status *status;
+
+ status = talloc_zero(handler, struct boot_status);
+ status->type = BOOT_STATUS_INFO;
+ status->message = talloc_asprintf(status, "Processing dhcp event on %s",
+ dev->device->id);
+ boot_status(handler, status);
+
+ /* create our context */
+ ctx = device_handler_discover_context_create(handler, dev);
+ ctx->event = event;
+
+ iterate_parsers(ctx);
+
+ device_handler_discover_context_commit(handler, ctx);
+
+ status->message = talloc_asprintf(status,"Processing %s complete\n",
+ dev->device->id);
+ boot_status(handler, status);
+
+ talloc_free(status);
+ talloc_free(ctx);
+
+ return 0;
+}
+
+/* incoming conf event */
+int device_handler_conf(struct device_handler *handler,
+ struct discover_device *dev, struct pb_url *url)
+{
+ struct discover_context *ctx;
+ struct boot_status *status;
+
+ status = talloc_zero(handler, struct boot_status);
+ status->type = BOOT_STATUS_INFO;
+ status->message = talloc_asprintf(status, "Processing user config");
+ boot_status(handler, status);
+
+ /* create our context */
+ ctx = device_handler_discover_context_create(handler, dev);
+ ctx->conf_url = url;
+
+ iterate_parsers(ctx);
+
+ device_handler_discover_context_commit(handler, ctx);
+
+ status->message = talloc_asprintf(status,
+ "Processing user config complete");
+ boot_status(handler, status);
+
+ talloc_free(status);
+ talloc_free(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(&handler->contexts, ctx, list) {
- if (!strcmp(ctx->id, id))
- return ctx;
+ list_for_each_entry(&dev->boot_options, opt, list)
+ if (!strcmp(opt->option->id, id))
+ return opt;
}
return NULL;
}
-static int destroy_context(void *arg)
+void device_handler_boot(struct device_handler *handler,
+ struct boot_command *cmd)
{
- struct discover_context *ctx = arg;
+ struct discover_boot_option *opt = NULL;
- list_remove(&ctx->list);
- umount_device(ctx);
+ if (cmd->option_id && strlen(cmd->option_id))
+ opt = find_boot_option_by_id(handler, cmd->option_id);
- return 0;
+ if (handler->pending_boot)
+ boot_cancel(handler->pending_boot);
+
+ platform_pre_boot();
+
+ handler->pending_boot = boot(handler, opt, cmd, handler->dry_run,
+ boot_status, handler);
+ handler->pending_boot_is_default = false;
}
-static int handle_add_udev_event(struct device_handler *handler,
- struct event *event)
+void device_handler_cancel_default(struct device_handler *handler)
+{
+ struct boot_status status;
+
+ 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;
+
+ status.type = BOOT_STATUS_INFO;
+ status.progress = -1;
+ status.detail = NULL;
+ status.message = _("Default boot cancelled");
+
+ discover_server_notify_boot_status(handler->server, &status);
+}
+
+void device_handler_update_config(struct device_handler *handler,
+ struct config *config)
{
- struct discover_context *ctx;
- const char *devname;
int rc;
- /* create our context */
- ctx = talloc(handler, struct discover_context);
- ctx->event = event;
- ctx->mount_path = NULL;
- ctx->links = NULL;
- ctx->n_links = 0;
+ rc = config_set(config);
+ if (rc)
+ return;
- ctx->id = talloc_strdup(ctx, event->device);
+ discover_server_notify_config(handler->server, config);
+ device_handler_update_lang(config->lang);
+ device_handler_reinit(handler);
+}
- devname = event_get_param(ctx->event, "DEVNAME");
- if (!devname) {
- pb_log("no devname for %s?\n", event->device);
- return 0;
+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);
}
- ctx->device_path = talloc_strdup(ctx, devname);
+ 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);
- rc = mount_device(ctx);
if (rc) {
- talloc_free(ctx);
- return 0;
+ /* ip has complained for some reason; most likely
+ * there is no route to the host - bail out */
+ pb_debug("%s: No route to %s\n",__func__,url->host);
+ 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)
+{
+ struct discover_context *ctx;
+ struct discover_device *dev;
+ struct boot_status *status;
+ struct pb_url *pb_url;
+ struct event *event;
+ struct param *param;
+
+ status = talloc(handler, struct boot_status);
+
+ status->type = BOOT_STATUS_ERROR;
+ status->progress = 0;
+ status->detail = talloc_asprintf(status,
+ _("Received config URL %s"), url);
+
+ if (!handler->network) {
+ status->message = talloc_asprintf(handler,
+ _("No network configured"));
+ goto msg;
+ }
+
+ event = talloc(handler, struct event);
+ event->type = EVENT_TYPE_USER;
+ event->action = EVENT_ACTION_CONF;
+
+ 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->host) {
+ status->message = talloc_asprintf(handler,
+ _("Invalid config URL!"));
+ goto msg;
}
- list_add(&handler->contexts, &ctx->list);
- talloc_set_destructor(ctx, destroy_context);
+ event->device = device_from_addr(event, pb_url);
+ if (!event->device) {
+ status->message = talloc_asprintf(status,
+ _("Unable to route to host %s"),
+ pb_url->host);
+ goto msg;
+ }
- /* set up the top-level device */
- ctx->device = talloc_zero(ctx, struct device);
- ctx->device->id = talloc_strdup(ctx->device, ctx->id);
- list_init(&ctx->device->boot_options);
+ dev = discover_device_create(handler, event->device);
+ ctx = device_handler_discover_context_create(handler, dev);
+ ctx->event = event;
- /* run the parsers */
iterate_parsers(ctx);
- /* add device to handler device array */
- device_handler_add(handler, ctx->device);
+ device_handler_discover_context_commit(handler, ctx);
- discover_server_notify_add(handler->server, ctx->device);
+ talloc_free(ctx);
- return 0;
+ status->type = BOOT_STATUS_INFO;
+ status->message = talloc_asprintf(status, _("Config file %s parsed"),
+ pb_url->file);
+msg:
+ boot_status(handler, status);
+ talloc_free(status);
}
-static int handle_remove_udev_event(struct device_handler *handler,
- struct event *event)
+#ifndef PETITBOOT_TEST
+
+static void device_handler_update_lang(const char *lang)
{
- struct discover_context *ctx;
+ const char *cur_lang;
- ctx = find_context(handler, event->device);
- if (!ctx)
- return 0;
+ if (!lang)
+ return;
- discover_server_notify_remove(handler->server, ctx->device);
+ cur_lang = setlocale(LC_ALL, NULL);
+ if (cur_lang && !strcmp(cur_lang, lang))
+ return;
- /* remove device from handler device array */
- device_handler_remove(handler, ctx->device);
+ setlocale(LC_ALL, lang);
+}
- talloc_free(ctx);
+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;
+
+ handler->network = network_init(handler, handler->waitset,
+ handler->dry_run);
+ if (!handler->network)
+ return -1;
+
+ handler->user_event = user_event_init(handler, handler->waitset);
+ if (!handler->user_event)
+ return -1;
return 0;
}
-int device_handler_event(struct device_handler *handler,
- struct event *event)
+static void device_handler_reinit_sources(struct device_handler *handler)
{
- int rc = 0;
+ /* 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;
+ }
- switch (event->type) {
- case EVENT_TYPE_UDEV:
- switch (event->action) {
- case EVENT_ACTION_ADD:
- rc = handle_add_udev_event(handler, event);
- break;
- case EVENT_ACTION_REMOVE:
- rc = handle_remove_udev_event(handler, event);
+ udev_reinit(handler->udev);
+
+ network_shutdown(handler->network);
+ handler->network = network_init(handler, handler->waitset,
+ handler->dry_run);
+}
+
+static const char *fs_parameters(unsigned int rw_flags, const char *fstype)
+{
+ if ((rw_flags | MS_RDONLY) != MS_RDONLY)
+ return "";
+
+ /* Avoid writing back to the disk on journaled filesystems */
+ if (!strncmp(fstype, "ext4", strlen("ext4")))
+ return "norecovery";
+ if (!strncmp(fstype, "xfs", strlen("xfs")))
+ return "norecovery";
+
+ return "";
+}
+
+static bool check_existing_mount(struct discover_device *dev)
+{
+ struct stat devstat, mntstat;
+ struct mntent *mnt;
+ FILE *fp;
+ int rc;
+
+ rc = stat(dev->device_path, &devstat);
+ if (rc) {
+ pb_debug("%s: stat failed: %s\n", __func__, strerror(errno));
+ return false;
+ }
+
+ if (!S_ISBLK(devstat.st_mode)) {
+ pb_debug("%s: %s isn't a block device?\n", __func__,
+ dev->device_path);
+ return false;
+ }
+
+ fp = fopen("/proc/self/mounts", "r");
+
+ for (;;) {
+ mnt = getmntent(fp);
+ if (!mnt)
break;
- default:
- pb_log("%s unknown action: %d\n", __func__,
- event->action);
+
+ if (!mnt->mnt_fsname || mnt->mnt_fsname[0] != '/')
+ continue;
+
+ rc = stat(mnt->mnt_fsname, &mntstat);
+ if (rc)
+ continue;
+
+ if (!S_ISBLK(mntstat.st_mode))
+ continue;
+
+ if (mntstat.st_rdev == devstat.st_rdev) {
+ dev->mount_path = talloc_strdup(dev, mnt->mnt_dir);
+ 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;
}
- break;
- case EVENT_TYPE_USER:
- break;
- default:
- pb_log("%s unknown type: %d\n", __func__, event->type);
- break;
}
- return rc;
+ fclose(fp);
+
+ return mnt != NULL;
}
-struct device_handler *device_handler_init(struct discover_server *server)
+static int mount_device(struct discover_device *dev)
{
- struct device_handler *handler;
+ const char *fstype;
+ int rc;
- handler = talloc(NULL, struct device_handler);
- handler->devices = NULL;
- handler->n_devices = 0;
- handler->server = server;
+ if (!dev->device_path)
+ return -1;
- list_init(&handler->contexts);
+ if (dev->mounted)
+ return 0;
- /* set up our mount point base */
- pb_mkdir_recursive(mount_base());
+ if (check_existing_mount(dev))
+ return 0;
- parser_init();
+ fstype = discover_device_get_param(dev, "ID_FS_TYPE");
+ if (!fstype)
+ return 0;
- return handler;
+ /* ext3 treats the norecovery option as an error, so mount the device
+ * as an ext4 filesystem instead */
+ if (!strncmp(fstype, "ext3", strlen("ext3"))) {
+ pb_debug("Mounting ext3 filesystem as ext4\n");
+ fstype = talloc_asprintf(dev, "ext4");
+ }
+
+ 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;
+ }
+
+ pb_log("mounting device %s read-only\n", dev->device_path);
+ errno = 0;
+ rc = mount(dev->device_path, dev->mount_path, fstype,
+ MS_RDONLY | MS_SILENT,
+ fs_parameters(MS_RDONLY, fstype));
+ if (!rc) {
+ dev->mounted = true;
+ dev->mounted_rw = false;
+ dev->unmount = true;
+ return 0;
+ }
+
+ pb_log("couldn't mount device %s: mount failed: %s\n",
+ dev->device_path, strerror(errno));
+
+ pb_rmdir_recursive(mount_base(), dev->mount_path);
+err_free:
+ talloc_free(dev->mount_path);
+ dev->mount_path = NULL;
+ return -1;
}
-void device_handler_destroy(struct device_handler *handler)
+static int umount_device(struct discover_device *dev)
{
- talloc_free(handler);
+ int rc;
+
+ if (!dev->mounted || !dev->unmount)
+ return 0;
+
+ pb_log("unmounting device %s\n", dev->device_path);
+ rc = umount(dev->mount_path);
+ if (rc)
+ return -1;
+
+ dev->mounted = false;
+
+ pb_rmdir_recursive(mount_base(), dev->mount_path);
+
+ talloc_free(dev->mount_path);
+ dev->mount_path = NULL;
+
+ return 0;
+}
+
+int device_request_write(struct discover_device *dev, bool *release)
+{
+ const char *fstype;
+ int rc;
+
+ *release = false;
+
+ if (!dev->mounted)
+ return -1;
+
+ if (dev->mounted_rw)
+ return 0;
+
+ fstype = discover_device_get_param(dev, "ID_FS_TYPE");
+
+ pb_log("remounting device %s read-write\n", dev->device_path);
+
+ rc = umount(dev->mount_path);
+ if (rc) {
+ pb_log("Failed to unmount %s\n", dev->mount_path);
+ return -1;
+ }
+ rc = mount(dev->device_path, dev->mount_path, fstype,
+ MS_SILENT,
+ fs_parameters(MS_REMOUNT, fstype));
+ if (rc)
+ goto mount_ro;
+
+ dev->mounted_rw = true;
+ *release = true;
+ return 0;
+
+mount_ro:
+ pb_log("Unable to remount device %s read-write\n", dev->device_path);
+ rc = mount(dev->device_path, dev->mount_path, fstype,
+ MS_RDONLY | MS_SILENT,
+ fs_parameters(MS_RDONLY, fstype));
+ if (rc)
+ pb_log("Unable to recover mount for %s\n", dev->device_path);
+ return -1;
+}
+
+void device_release_write(struct discover_device *dev, bool release)
+{
+ const char *fstype;
+
+ if (!release)
+ return;
+
+ fstype = discover_device_get_param(dev, "ID_FS_TYPE");
+
+ pb_log("remounting device %s read-only\n", dev->device_path);
+ mount(dev->device_path, dev->mount_path, "",
+ MS_REMOUNT | MS_RDONLY | MS_SILENT,
+ fs_parameters(MS_RDONLY, fstype));
+ dev->mounted_rw = false;
+}
+
+#else
+
+static void device_handler_update_lang(const char *lang __attribute__((unused)))
+{
+}
+
+static int device_handler_init_sources(
+ struct device_handler *handler __attribute__((unused)))
+{
+ return 0;
+}
+
+static void device_handler_reinit_sources(
+ struct device_handler *handler __attribute__((unused)))
+{
+}
+
+static int umount_device(struct discover_device *dev __attribute__((unused)))
+{
+ return 0;
+}
+
+static int __attribute__((unused)) mount_device(
+ struct discover_device *dev __attribute__((unused)))
+{
+ return 0;
}
+
+int device_request_write(struct discover_device *dev __attribute__((unused)),
+ bool *release)
+{
+ *release = true;
+ return 0;
+}
+
+void device_release_write(struct discover_device *dev __attribute__((unused)),
+ bool release __attribute__((unused)))
+{
+}
+
+#endif
+