-
#include <assert.h>
#include <stdlib.h>
+#include <stdbool.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
+#include <mntent.h>
#include <sys/stat.h>
#include <sys/wait.h>
+#include <pb-config/pb-config.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 "device-handler.h"
#include "discover-server.h"
#include "event.h"
#include "parser.h"
-#include "udev.h"
+#include "resource.h"
#include "paths.h"
+#include "boot.h"
-#define MOUNT_BIN "/bin/mount"
+struct device_handler {
+ struct discover_server *server;
+ int dry_run;
-#define UMOUNT_BIN "/bin/umount"
+ struct discover_device **devices;
+ unsigned int n_devices;
-struct device_handler {
- struct discover_server *server;
+ struct waitset *waitset;
+ struct waiter *timeout_waiter;
+ bool autoboot_enabled;
+ unsigned int sec_to_boot;
- struct device **devices;
- unsigned int n_devices;
+ struct discover_boot_option *default_boot_option;
+ struct list unresolved_boot_options;
- struct list contexts;
+ struct boot_task *pending_boot;
+ bool pending_boot_is_default;
};
-struct mount_map {
- char *device_path;
- char *mount_point;
-};
+static int mount_device(struct discover_device *dev);
+static int umount_device(struct discover_device *dev);
+
+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)
{
- unsigned int i;
+ if (index >= handler->n_devices) {
+ assert(0 && "bad index");
+ return NULL;
+ }
- for (i = 0; i < handler->n_devices; i++)
- if (handler->devices[i] == device)
- break;
+ return handler->devices[index];
+}
- if (i == handler->n_devices) {
- assert(0 && "unknown device");
- return;
- }
+struct discover_boot_option *discover_boot_option_create(
+ struct discover_context *ctx,
+ struct discover_device *device)
+{
+ struct discover_boot_option *opt;
- 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);
+ opt = talloc_zero(ctx, struct discover_boot_option);
+ opt->option = talloc_zero(opt, struct boot_option);
+ opt->device = device;
+
+ return opt;
}
-/**
- * device_handler_find - Find a handler device by id.
- */
+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 device *device_handler_find(struct device_handler *handler,
- const char *id)
+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;
- assert(id);
+ if (!str)
+ return NULL;
- for (i = 0; i < handler->n_devices; i++)
- if (handler->devices[i]->id
- && streq(handler->devices[i]->id, id))
- return handler->devices[i];
+ for (i = 0; i < device_handler->n_devices; i++) {
+ dev = device_handler->devices[i];
+
+ if (match_fn(dev, str))
+ return dev;
+ }
- pb_log("%s: unknown device: %s\n", __func__, id);
return NULL;
}
-/**
- * device_handler_get_device_count - Get the count of current handler devices.
- */
+struct discover_device *device_lookup_by_name(struct device_handler *handler,
+ const char *name)
+{
+ if (!strncmp(name, "/dev/", strlen("/dev/")))
+ name += strlen("/dev/");
-int device_handler_get_device_count(const struct device_handler *handler)
+ return device_lookup_by_id(handler, name);
+}
+
+struct discover_device *device_lookup_by_uuid(
+ struct device_handler *device_handler,
+ const char *uuid)
{
- return handler->n_devices;
+ return device_lookup(device_handler, device_match_uuid, uuid);
}
-/**
- * device_handler_get_device - Get a handler device by index.
- */
+struct discover_device *device_lookup_by_label(
+ struct device_handler *device_handler,
+ const char *label)
+{
+ return device_lookup(device_handler, device_match_label, label);
+}
-const struct device *device_handler_get_device(
- const struct device_handler *handler, unsigned int index)
+struct discover_device *device_lookup_by_id(
+ struct device_handler *device_handler,
+ const char *id)
{
- if (index >= handler->n_devices) {
- assert(0 && "bad index");
- return NULL;
- }
+ return device_lookup(device_handler, device_match_id, id);
+}
- return handler->devices[index];
+struct discover_device *device_lookup_by_serial(
+ struct device_handler *device_handler,
+ const char *serial)
+{
+ return device_lookup(device_handler, device_match_serial, serial);
}
-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
- }
- };
+void device_handler_destroy(struct device_handler *handler)
+{
+ talloc_free(handler);
+}
- for (link = links; link->env; link++) {
- char *enc, *dir, *path;
- const char *value;
+static int destroy_device(void *arg)
+{
+ struct discover_device *dev = arg;
- value = event_get_param(ctx->event, link->env);
- if (!value || !*value)
- continue;
+ umount_device(dev);
- 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;
- }
+ 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;
}
+ }
- talloc_free(dir);
- talloc_free(enc);
+ 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);
}
-static void remove_device_links(struct discover_context *ctx)
+const char *discover_device_get_param(struct discover_device *device,
+ const char *name)
{
- int i;
+ struct discover_device_param *param;
- for (i = 0; i < ctx->n_links; i++)
- unlink(ctx->links[i]);
+ list_for_each_entry(&device->params, param, list) {
+ if (!strcmp(param->name, name))
+ return param->name;
+ }
+ return NULL;
}
-static int mount_device(struct discover_context *ctx)
+struct device_handler *device_handler_init(struct discover_server *server,
+ struct waitset *waitset, int dry_run)
{
- const char *mountpoint;
- const char *argv[6];
+ struct device_handler *handler;
- if (!ctx->mount_path) {
- mountpoint = mountpoint_for_device(ctx->device_path);
- ctx->mount_path = talloc_strdup(ctx, mountpoint);
+ 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();
+
+ return handler;
+}
+
+void device_handler_remove(struct device_handler *handler,
+ struct discover_device *device)
+{
+ unsigned int i;
+
+ for (i = 0; i < handler->n_devices; i++)
+ if (handler->devices[i] == device)
+ break;
+
+ if (i == handler->n_devices) {
+ talloc_free(device);
+ return;
}
- if (pb_mkdir_recursive(ctx->mount_path))
- pb_log("couldn't create mount directory %s: %s\n",
- ctx->mount_path, strerror(errno));
+ 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);
- argv[0] = MOUNT_BIN;
- argv[1] = ctx->device_path;
- argv[2] = ctx->mount_path;
- argv[3] = "-o";
- argv[4] = "ro";
- argv[5] = NULL;
+ if (device->notified)
+ discover_server_notify_device_remove(handler->server,
+ device->device);
- if (pb_run_cmd(argv, 1, 0)) {
+ talloc_free(device);
+}
+
+static void boot_status(void *arg, struct boot_status *status)
+{
+ struct device_handler *handler = arg;
- /* Retry mount without ro option. */
+ discover_server_notify_boot_status(handler->server, status);
+}
+
+static void countdown_status(struct device_handler *handler,
+ struct discover_boot_option *opt, unsigned int sec)
+{
+ struct boot_status status;
- argv[0] = MOUNT_BIN;
- argv[1] = ctx->device_path;
- argv[2] = ctx->mount_path;
- argv[3] = NULL;
+ status.type = BOOT_STATUS_INFO;
+ status.progress = -1;
+ status.detail = NULL;
+ status.message = talloc_asprintf(handler,
+ "Booting %s in %u sec", opt->option->name, sec);
+
+ discover_server_notify_boot_status(handler->server, &status);
+
+ talloc_free(status.message);
+}
+
+static int default_timeout(void *arg)
+{
+ struct device_handler *handler = arg;
+ struct discover_boot_option *opt;
- if (pb_run_cmd(argv, 1, 0))
- goto out_rmdir;
+ 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;
}
- setup_device_links(ctx);
+ 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;
+}
-out_rmdir:
- pb_rmdir_recursive(mount_base(), ctx->mount_path);
- return -1;
+static bool priority_match(struct boot_priority *prio,
+ struct discover_boot_option *opt)
+{
+ return prio->type == opt->device->device->type;
}
-static int umount_device(struct discover_context *ctx)
+static int default_option_priority(struct discover_boot_option *opt)
{
- int status;
- pid_t pid;
+ const struct config *config;
+ struct boot_priority *prio;
+ unsigned int i;
- remove_device_links(ctx);
+ config = config_get();
- pid = fork();
- if (pid == -1) {
- pb_log("%s: fork failed: %s\n", __func__, strerror(errno));
- return -1;
+ for (i = 0; i < config->n_boot_priorities; i++) {
+ prio = &config->boot_priorities[i];
+ if (priority_match(prio, opt))
+ break;
}
- if (pid == 0) {
- execl(UMOUNT_BIN, UMOUNT_BIN, ctx->mount_path, NULL);
- exit(EXIT_FAILURE);
- }
+ return i;
+}
- if (waitpid(pid, &status, 0) == -1) {
- pb_log("%s: waitpid failed: %s\n", __func__,
- strerror(errno));
- return -1;
+static void set_default(struct device_handler *handler,
+ struct discover_boot_option *opt)
+{
+ if (!handler->autoboot_enabled)
+ return;
+
+ /* 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) {
+ int new_prio, cur_prio;
+
+ new_prio = default_option_priority(opt);
+ cur_prio = default_option_priority(
+ handler->default_boot_option);
+
+ if (new_prio < cur_prio) {
+ handler->default_boot_option = opt;
+ /* extend the timeout a little, so the user sees some
+ * indication of the change */
+ handler->sec_to_boot += 2;
+ }
+
+ return;
}
- if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
- return -1;
+ handler->sec_to_boot = config_get()->autoboot_timeout_sec;
+ handler->default_boot_option = opt;
- pb_rmdir_recursive(mount_base(), ctx->mount_path);
+ pb_log("Boot option %s set as default, timeout %u sec.\n",
+ opt->option->id, handler->sec_to_boot);
- return 0;
+ default_timeout(handler);
}
-static struct discover_context *find_context(struct device_handler *handler,
- const char *id)
+static bool resource_is_resolved(struct resource *res)
{
- struct discover_context *ctx;
+ return !res || res->resolved;
+}
- list_for_each_entry(&handler->contexts, ctx, list) {
- if (!strcmp(ctx->id, id))
- return ctx;
- }
+/* 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);
+}
- return NULL;
+static bool resource_resolve(struct resource *res, const char *name,
+ struct discover_boot_option *opt,
+ struct device_handler *handler)
+{
+ struct parser *parser = opt->source;
+
+ if (resource_is_resolved(res))
+ return true;
+
+ pb_debug("Attempting to resolve resource %s->%s with parser %s\n",
+ opt->option->id, name, parser->name);
+ parser->resolve_resource(handler, res);
+
+ return res->resolved;
+}
+
+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);
}
-static int destroy_context(void *arg)
+static void boot_option_finalise(struct device_handler *handler,
+ struct discover_boot_option *opt)
{
- struct discover_context *ctx = arg;
+ 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);
+}
- list_remove(&ctx->list);
- umount_device(ctx);
+static void notify_boot_option(struct device_handler *handler,
+ struct discover_boot_option *opt)
+{
+ struct discover_device *dev = opt->device;
- return 0;
+ 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 handle_add_udev_event(struct device_handler *handler,
- struct event *event)
+static void process_boot_option_queue(struct device_handler *handler)
{
- struct discover_context *ctx;
- const char *devname;
- int rc;
+ struct discover_boot_option *opt, *tmp;
- /* create our context */
- ctx = talloc(handler, struct discover_context);
- ctx->event = event;
- ctx->mount_path = NULL;
- ctx->links = NULL;
- ctx->n_links = 0;
+ list_for_each_entry_safe(&handler->unresolved_boot_options,
+ opt, tmp, list) {
- ctx->id = talloc_strdup(ctx, event->device);
+ pb_debug("queue: attempting resolution for %s\n",
+ opt->option->id);
- devname = event_get_param(ctx->event, "DEVNAME");
- assert(devname);
- ctx->device_path = talloc_strdup(ctx, devname);
+ if (!boot_option_resolve(opt, handler))
+ continue;
- rc = mount_device(ctx);
- if (rc) {
- talloc_free(ctx);
- return 0;
+ 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);
}
+}
+
+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;
+ 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);
+ }
+ }
+ }
+}
+
+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;
- list_add(&handler->contexts, &ctx->list);
- talloc_set_destructor(ctx, destroy_context);
+}
- /* 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);
+/* 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;
- /* run the parsers */
+ process_boot_option_queue(handler);
+
+ /* create our context */
+ ctx = device_handler_discover_context_create(handler, dev);
+
+ rc = mount_device(dev);
+ if (rc)
+ goto out;
+
+ /* run the parsers. This will populate the ctx's boot_option list. */
iterate_parsers(ctx);
- /* add device to handler device array */
- device_handler_add(handler, ctx->device);
+ /* add discovered stuff to the handler */
+ device_handler_discover_context_commit(handler, ctx);
- discover_server_notify_add(handler->server, ctx->device);
+out:
+ talloc_free(ctx);
return 0;
}
-static int handle_remove_udev_event(struct device_handler *handler,
- struct event *event)
+/* Incoming dhcp event */
+int device_handler_dhcp(struct device_handler *handler,
+ struct discover_device *dev, struct event *event)
{
struct discover_context *ctx;
- ctx = find_context(handler, event->device);
- if (!ctx)
- return 0;
+ /* create our context */
+ ctx = device_handler_discover_context_create(handler, dev);
+ ctx->event = event;
- discover_server_notify_remove(handler->server, ctx->device);
+ iterate_parsers(ctx);
- /* remove device from handler device array */
- device_handler_remove(handler, ctx->device);
+ device_handler_discover_context_commit(handler, ctx);
talloc_free(ctx);
return 0;
}
-static int handle_add_user_event(struct device_handler *handler,
- struct event *event)
+/* incoming conf event */
+int device_handler_conf(struct device_handler *handler,
+ struct discover_device *dev, struct pb_url *url)
{
- struct device *device;
+ struct discover_context *ctx;
- assert(event->device);
+ /* create our context */
+ ctx = device_handler_discover_context_create(handler, dev);
+ ctx->conf_url = url;
- device = talloc_zero(handler, struct device);
+ iterate_parsers(ctx);
- if (!device)
- goto fail;
+ device_handler_discover_context_commit(handler, ctx);
- device->id = talloc_strdup(device, event->device);
- list_init(&device->boot_options);
+ talloc_free(ctx);
- parse_user_event(device, event);
+ return 0;
+}
- discover_server_notify_add(handler->server, device);
+static struct discover_boot_option *find_boot_option_by_id(
+ struct device_handler *handler, const char *id)
+{
+ unsigned int i;
- /* add device to handler device array */
- device_handler_add(handler, device);
+ for (i = 0; i < handler->n_devices; i++) {
+ struct discover_device *dev = handler->devices[i];
+ struct discover_boot_option *opt;
- return 0;
+ list_for_each_entry(&dev->boot_options, opt, list)
+ if (!strcmp(opt->option->id, id))
+ return opt;
+ }
-fail:
- talloc_free(device);
- return 0;
+ return NULL;
}
-static int handle_remove_user_event(struct device_handler *handler,
- struct event *event)
+void device_handler_boot(struct device_handler *handler,
+ struct boot_command *cmd)
{
- struct device *device = device_handler_find(handler, event->device);
+ struct discover_boot_option *opt = NULL;
- if (!device)
- return 0;
+ if (cmd->option_id && strlen(cmd->option_id))
+ opt = find_boot_option_by_id(handler, cmd->option_id);
- discover_server_notify_remove(handler->server, device);
+ if (handler->pending_boot)
+ boot_cancel(handler->pending_boot);
+ handler->pending_boot = boot(handler, opt, cmd, handler->dry_run,
+ boot_status, handler);
+ handler->pending_boot_is_default = false;
+}
- /* remove device from handler device array */
- device_handler_remove(handler, device);
+void device_handler_cancel_default(struct device_handler *handler)
+{
+ struct boot_status status;
- talloc_free(device);
- return 0;
+ 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)
+{
+ config_set(config);
+ discover_server_notify_config(handler->server, config);
}
-typedef int (*event_handler)(struct device_handler *, struct event *);
+#ifndef PETITBOOT_TEST
+static bool check_existing_mount(struct discover_device *dev)
+{
+ struct stat devstat, mntstat;
+ struct mntent *mnt;
+ FILE *fp;
+ 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,
+ 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;
+
+ 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;
+ }
}
-};
-int device_handler_event(struct device_handler *handler,
- struct event *event)
+ fclose(fp);
+
+ return mnt != NULL;
+}
+
+static int mount_device(struct discover_device *dev)
{
- 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);
+ int rc;
+
+ if (!dev->device_path)
+ return -1;
+
+ if (dev->mounted)
+ return 0;
+
+ if (check_existing_mount(dev))
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;
}
- return handlers[event->type][event->action](handler, event);
+ rc = process_run_simple(dev, pb_system_apps.mount,
+ dev->device_path, dev->mount_path,
+ "-o", "ro", NULL);
+ if (!rc) {
+ dev->mounted = true;
+ dev->mounted_rw = false;
+ dev->unmount = true;
+ return 0;
+ }
+
+ /* Retry mount without ro option. */
+ rc = process_run_simple(dev, pb_system_apps.mount,
+ dev->device_path, dev->mount_path, NULL);
+
+ if (!rc) {
+ dev->mounted = true;
+ dev->mounted_rw = true;
+ dev->unmount = true;
+ return 0;
+ }
+
+ pb_rmdir_recursive(mount_base(), dev->mount_path);
+err_free:
+ talloc_free(dev->mount_path);
+ dev->mount_path = NULL;
+ return -1;
}
-struct device_handler *device_handler_init(struct discover_server *server)
+static int umount_device(struct discover_device *dev)
{
- struct device_handler *handler;
+ int status;
- handler = talloc(NULL, struct device_handler);
- handler->devices = NULL;
- handler->n_devices = 0;
- handler->server = server;
+ if (!dev->mounted || !dev->unmount)
+ return 0;
- list_init(&handler->contexts);
+ status = process_run_simple(dev, pb_system_apps.umount,
+ dev->mount_path, NULL);
- /* set up our mount point base */
- pb_mkdir_recursive(mount_base());
+ if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
+ return -1;
- parser_init();
+ dev->mounted = false;
- return handler;
+ pb_rmdir_recursive(mount_base(), dev->mount_path);
+
+ talloc_free(dev->mount_path);
+ dev->mount_path = NULL;
+
+ return 0;
}
-void device_handler_destroy(struct device_handler *handler)
+int device_request_write(struct discover_device *dev, bool *release)
{
- talloc_free(handler);
+ int rc;
+
+ *release = false;
+
+ if (!dev->mounted)
+ return -1;
+
+ if (dev->mounted_rw)
+ return 0;
+
+ rc = process_run_simple(dev, pb_system_apps.mount, dev->mount_path,
+ "-o", "remount,rw", NULL);
+ if (rc)
+ return -1;
+
+ dev->mounted_rw = true;
+ *release = true;
+ return 0;
+}
+
+void device_release_write(struct discover_device *dev, bool release)
+{
+ if (!release)
+ return;
+
+ process_run_simple(dev, pb_system_apps.mount, dev->mount_path,
+ "-o", "remount,ro", NULL);
+ dev->mounted_rw = false;
}
+
+#else
+
+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
+
projects / petitboot / blobdiff