-
+#include <assert.h>
+#include <inttypes.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 <pb-protocol/pb-protocol.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 <pb-config/pb-config.h>
+
+#include <sys/sysmacros.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 "udev.h"
-#include "log.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 progress_info {
+ unsigned int percentage;
+ unsigned long size; /* size in bytes */
-#define UMOUNT_BIN "/bin/umount"
+ const struct process_info *procinfo;
+ struct list_item list;
+};
struct device_handler {
- struct discover_server *server;
+ struct discover_server *server;
+ int dry_run;
- struct device *devices;
- int n_devices;
+ struct pb_udev *udev;
+ struct network *network;
+ struct user_event *user_event;
- struct list contexts;
-};
+ struct discover_device **devices;
+ unsigned int n_devices;
-struct mount_map {
- char *device_path;
- char *mount_point;
-};
+ struct ramdisk_device **ramdisks;
+ unsigned int n_ramdisks;
+ struct waitset *waitset;
+ struct waiter *timeout_waiter;
+ bool autoboot_enabled;
+ unsigned int sec_to_boot;
-static struct boot_option options[] = {
- {
- .id = "1.1",
- .name = "meep one",
- .description = "meep description one",
- .icon_file = "meep.one.png",
- .boot_args = "root=/dev/sda1",
- },
-};
+ struct discover_boot_option *default_boot_option;
+ int default_boot_option_priority;
-static struct device device = {
- .id = "1",
- .name = "meep",
- .description = "meep description",
- .icon_file = "meep.png",
+ struct list unresolved_boot_options;
+
+ struct boot_task *pending_boot;
+ bool pending_boot_is_default;
+
+ struct list progress;
+ unsigned int n_progress;
+
+ struct plugin_option **plugins;
+ unsigned int n_plugins;
+ bool plugin_installing;
};
-int device_handler_get_current_devices(struct device_handler *handler,
- struct device **devices)
+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)
{
- *devices = &device;
- return 1;
+ boot_option->source = ctx->parser;
+ list_add_tail(&ctx->boot_options, &boot_option->list);
+ talloc_steal(ctx, boot_option);
}
-static int mkdir_recursive(const char *dir)
+/**
+ * device_handler_get_device_count - Get the count of current handler devices.
+ */
+
+int device_handler_get_device_count(const struct device_handler *handler)
{
- struct stat statbuf;
- char *str, *sep;
- int mode = 0755;
+ return handler->n_devices;
+}
- if (!*dir)
- return 0;
+/**
+ * device_handler_get_device - Get a handler device by index.
+ */
- if (!stat(dir, &statbuf)) {
- if (!S_ISDIR(statbuf.st_mode)) {
- pb_log("%s: %s exists, but isn't a directory\n",
- __func__, dir);
- return -1;
- }
- return 0;
+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;
}
- str = talloc_strdup(NULL, dir);
- sep = strchr(*str == '/' ? str + 1 : str, '/');
+ return handler->devices[index];
+}
- while (1) {
+/**
+ * device_handler_get_plugin_count - Get the count of current handler plugins.
+ */
+int device_handler_get_plugin_count(const struct device_handler *handler)
+{
+ return handler->n_plugins;
+}
- /* terminate the path at sep */
- if (sep)
- *sep = '\0';
+/**
+ * discover_handler_get_plugin - Get a handler plugin by index.
+ */
+const struct plugin_option *device_handler_get_plugin(
+ const struct device_handler *handler, unsigned int index)
+{
+ if (index >= handler->n_plugins) {
+ assert(0 && "bad index");
+ return NULL;
+ }
- if (mkdir(str, mode) && errno != EEXIST) {
- pb_log("mkdir(%s): %s\n", str, strerror(errno));
- return -1;
- }
+ return handler->plugins[index];
+}
- if (!sep)
- break;
+struct network *device_handler_get_network(
+ const struct device_handler *handler)
+{
+ return handler->network;
+}
- /* reset dir to the full path */
- strcpy(str, dir);
- sep = strchr(sep + 1, '/');
- }
+struct discover_boot_option *discover_boot_option_create(
+ struct discover_context *ctx,
+ struct discover_device *device)
+{
+ struct discover_boot_option *opt;
- talloc_free(str);
+ opt = talloc_zero(ctx, struct discover_boot_option);
+ opt->option = talloc_zero(opt, struct boot_option);
+ opt->device = device;
- return 0;
+ return opt;
}
-static int rmdir_recursive(const char *base, const char *dir)
+static int device_match_uuid(struct discover_device *dev, const char *uuid)
{
- char *cur, *pos;
+ return dev->uuid && !strcmp(dev->uuid, uuid);
+}
- /* sanity check: make sure that dir is within base */
- if (strncmp(base, dir, strlen(base)))
- return -1;
+static int device_match_label(struct discover_device *dev, const char *label)
+{
+ return dev->label && !strcmp(dev->label, label);
+}
- cur = talloc_strdup(NULL, dir);
+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);
+}
- while (strcmp(base, dir)) {
+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;
- rmdir(dir);
+ if (!str)
+ return NULL;
- /* null-terminate at the last slash */
- pos = strrchr(dir, '/');
- if (!pos)
- break;
+ for (i = 0; i < device_handler->n_devices; i++) {
+ dev = device_handler->devices[i];
- *pos = '\0';
+ if (match_fn(dev, str))
+ return dev;
}
- talloc_free(cur);
+ 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;
}
-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
- }
- };
+struct discover_device *discover_device_create(struct device_handler *handler,
+ const char *uuid, const char *id)
+{
+ struct discover_device *dev;
- for (link = links; link->env; link++) {
- char *enc, *dir, *path;
- const char *value;
+ if (uuid)
+ dev = device_lookup_by_uuid(handler, uuid);
+ else
+ dev = device_lookup_by_id(handler, id);
- value = udev_event_param(ctx->event, link->env);
- if (!value || !*value)
- continue;
+ if (dev)
+ return dev;
- enc = encode_label(ctx, value);
- dir = join_paths(ctx, mount_base(), link->dir);
- path = join_paths(ctx, dir, value);
-
- if (!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;
- }
+ 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);
+
+ 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->value;
+ }
+ return NULL;
+}
+
+static void set_env_variables(const struct config *config)
+{
+ if (config->http_proxy)
+ setenv("http_proxy", config->http_proxy, 1);
+ else
+ unsetenv("http_proxy");
+
+ if (config->https_proxy)
+ setenv("https_proxy", config->https_proxy, 1);
+ else
+ unsetenv("https_proxy");
+
+ /* Reduce noise in the log from LVM listing open file descriptors */
+ setenv("LVM_SUPPRESS_FD_WARNINGS", "1", 1);
}
-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;
- int status;
- pid_t pid;
+ 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_autoboot_active(config_get());
+
+ list_init(&handler->unresolved_boot_options);
+
+ list_init(&handler->progress);
+
+ /* set up our mount point base */
+ pb_mkdir_recursive(mount_base());
+
+ parser_init();
+
+ if (config_get()->safe_mode)
+ return handler;
- if (!ctx->mount_path) {
- mountpoint = mountpoint_for_device(ctx->device_path);
- ctx->mount_path = talloc_strdup(ctx, mountpoint);
+ set_env_variables(config_get());
+
+ rc = device_handler_init_sources(handler);
+ if (rc) {
+ talloc_free(handler);
+ return NULL;
}
- if (mkdir_recursive(ctx->mount_path))
- pb_log("couldn't create mount directory %s: %s\n",
- ctx->mount_path, strerror(errno));
+ return handler;
+}
+
+void device_handler_reinit(struct device_handler *handler)
+{
+ struct discover_boot_option *opt, *tmp;
+ struct ramdisk_device *ramdisk;
+ struct config *config;
+ unsigned int i;
- pid = fork();
- if (pid == -1) {
- pb_log("%s: fork failed: %s\n", __func__, strerror(errno));
- goto out_rmdir;
+ device_handler_cancel_default(handler);
+ /* Cancel any pending non-default boot */
+ if (handler->pending_boot) {
+ boot_cancel(handler->pending_boot);
+ handler->pending_boot = NULL;
+ handler->pending_boot_is_default = false;
}
- if (pid == 0) {
- execl(MOUNT_BIN, MOUNT_BIN, ctx->device_path, ctx->mount_path,
- "-o", "ro", NULL);
- exit(EXIT_FAILURE);
+ /* Cancel any remaining async jobs */
+ process_stop_async_all();
+ pending_network_jobs_cancel();
+
+ /* 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);
+ ramdisk = handler->devices[i]->ramdisk;
+ talloc_free(handler->devices[i]);
+ talloc_free(ramdisk);
}
- if (waitpid(pid, &status, 0) == -1) {
- pb_log("%s: waitpid failed: %s\n", __func__,
- strerror(errno));
- goto out_rmdir;
+ talloc_free(handler->devices);
+ handler->devices = NULL;
+ handler->n_devices = 0;
+ talloc_free(handler->ramdisks);
+ handler->ramdisks = NULL;
+ handler->n_ramdisks = 0;
+
+ /* drop any known plugins */
+ for (i = 0; i < handler->n_plugins; i++)
+ talloc_free(handler->plugins[i]);
+ talloc_free(handler->plugins);
+ handler->plugins = NULL;
+ handler->n_plugins = 0;
+
+ discover_server_notify_plugins_remove(handler->server);
+
+ set_env_variables(config_get());
+
+ /* If the safe mode warning was active disable it now */
+ if (config_get()->safe_mode) {
+ config = config_copy(handler, config_get());
+ config->safe_mode = false;
+ config_set(config);
+ discover_server_notify_config(handler->server, config);
}
- if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
- goto out_rmdir;
+ device_handler_reinit_sources(handler);
+}
- setup_device_links(ctx);
- return 0;
+void device_handler_remove(struct device_handler *handler,
+ struct discover_device *device)
+{
+ struct discover_boot_option *opt, *tmp;
+ unsigned int i;
-out_rmdir:
- rmdir_recursive(mount_base(), ctx->mount_path);
- return -1;
+ 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) {
+ 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);
+
+ if (device->notified)
+ discover_server_notify_device_remove(handler->server,
+ device->device);
+
+ talloc_free(device);
}
-static int umount_device(struct discover_context *ctx)
+void device_handler_status(struct device_handler *handler,
+ struct status *status)
{
- int status;
- pid_t pid;
+ discover_server_notify_boot_status(handler->server, status);
+}
- remove_device_links(ctx);
+static void _device_handler_vstatus(struct device_handler *handler,
+ enum status_type type, const char *fmt, va_list ap)
+{
+ struct status status;
- pid = fork();
- if (pid == -1) {
- pb_log("%s: fork failed: %s\n", __func__, strerror(errno));
- return -1;
+ status.type = type;
+ status.message = talloc_vasprintf(handler, fmt, ap);
+ status.backlog = false;
+
+ 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);
+}
+
+void device_handler_status_download(struct device_handler *handler,
+ const struct process_info *procinfo,
+ unsigned int percentage, unsigned int size, char suffix)
+{
+ struct progress_info *p, *progress = NULL;
+ uint64_t current_converted, current = 0;
+ const char *units = " kMGTP";
+ unsigned long size_bytes;
+ char *update = NULL;
+ double total = 0;
+ unsigned int i;
+ int unit = 0;
+
+ list_for_each_entry(&handler->progress, p, list)
+ if (p->procinfo == procinfo)
+ progress = p;
+
+ if (!progress) {
+ pb_log("Registering new progress struct\n");
+ progress = talloc_zero(handler, struct progress_info);
+ if (!progress) {
+ pb_log("Failed to allocate room for progress struct\n");
+ return;
+ }
+ progress->procinfo = procinfo;
+ list_add(&handler->progress, &progress->list);
+ handler->n_progress++;
}
- if (pid == 0) {
- execl(UMOUNT_BIN, UMOUNT_BIN, ctx->mount_path, NULL);
- exit(EXIT_FAILURE);
+ size_bytes = size;
+ for (i = 0; i < strlen(units); i++) {
+ if (units[i] == suffix)
+ break;
}
- if (waitpid(pid, &status, 0) == -1) {
- pb_log("%s: waitpid failed: %s\n", __func__,
- strerror(errno));
- return -1;
+ if (i >= strlen(units)) {
+ pb_log("Couldn't recognise suffix '%c'\n", suffix);
+ size_bytes = 0;
+ } else {
+ while (i--)
+ size_bytes <<= 10;
}
- if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
- return -1;
+ progress->percentage = percentage;
+ progress->size = size_bytes;
+
+ /*
+ * Aggregate the info we have and update status. If a progress struct
+ * has zero for both percentage and size we assume progress information
+ * is unavailable and fall back to a generic progress message.
+ */
+ list_for_each_entry(&handler->progress, p, list) {
+ uint64_t c;
+ double t;
+ if (!p->percentage || !p->size) {
+ update = talloc_asprintf(handler,
+ _("%u downloads in progress..."),
+ handler->n_progress);
+ current = total = 0;
+ break;
+ }
- rmdir_recursive(mount_base(), ctx->mount_path);
+ c = p->size;
+ t = (100 * c) / p->percentage;
- return 0;
+ current += c;
+ total += t;
+ }
+
+ if (total) {
+ current_converted = current;
+ while (current_converted >= 1000) {
+ current_converted >>= 10;
+ unit++;
+ }
+ update = talloc_asprintf(handler,
+ _("%u %s downloading: %.0f%% - %" PRIu64 "%cB"),
+ handler->n_progress,
+ ngettext("item", "items", handler->n_progress),
+ (current / total) * 100, current_converted,
+ units[unit]);
+ }
+
+ if (!update) {
+ pb_log("%s: failed to allocate new status\n", __func__);
+ } else {
+ device_handler_status_info(handler, "%s\n", update);
+ talloc_free(update);
+ }
}
-static struct discover_context *find_context(struct device_handler *handler,
- const char *id)
+static void device_handler_plugin_scan_device(struct device_handler *handler,
+ struct discover_device *dev)
{
- struct discover_context *ctx;
+ int rc;
- list_for_each_entry(&handler->contexts, ctx, list) {
- if (!strcmp(ctx->id, id))
- return ctx;
- }
+ pb_debug("Scanning %s for plugin files\n", dev->device->id);
- return NULL;
+ rc = process_run_simple(handler, pb_system_apps.pb_plugin,
+ "scan", dev->mount_path,
+ NULL);
+ if (rc)
+ pb_log("Error from pb-plugin scan %s\n",
+ dev->mount_path);
}
-
-static int destroy_context(void *arg)
+void device_handler_status_download_remove(struct device_handler *handler,
+ struct process_info *procinfo)
{
- struct discover_context *ctx = arg;
+ struct progress_info *p, *tmp;
- list_remove(&ctx->list);
- umount_device(ctx);
+ list_for_each_entry_safe(&handler->progress, p, tmp, list)
+ if (p->procinfo == procinfo) {
+ list_remove(&p->list);
+ talloc_free(p);
+ handler->n_progress--;
+ }
+}
- return 0;
+static void device_handler_boot_status_cb(void *arg, struct status *status)
+{
+ device_handler_status(arg, status);
}
-static int handle_add_event(struct device_handler *handler,
- struct udev_event *event)
+static void countdown_status(struct device_handler *handler,
+ struct discover_boot_option *opt, unsigned int sec)
{
- struct discover_context *ctx;
- const char *devname;
- int rc;
+ struct status status;
- /* create our context */
- ctx = talloc(handler, struct discover_context);
- ctx->event = event;
- ctx->mount_path = NULL;
- ctx->links = NULL;
- ctx->n_links = 0;
+ status.type = STATUS_INFO;
+ status.message = talloc_asprintf(handler,
+ _("Booting in %d sec: [%s] %s"), sec,
+ opt->device->device->id, opt->option->name);
+ status.backlog = false;
+
+ device_handler_status(handler, &status);
+
+ talloc_free(status.message);
+}
- ctx->id = talloc_strdup(ctx, event->device);
+static int default_timeout(void *arg)
+{
+ struct device_handler *handler = arg;
+ struct discover_boot_option *opt;
- devname = udev_event_param(ctx->event, "DEVNAME");
- if (!devname) {
- pb_log("no devname for %s?\n", event->device);
+ if (!handler->default_boot_option)
return 0;
- }
- ctx->device_path = talloc_strdup(ctx, devname);
+ if (handler->pending_boot)
+ return 0;
- rc = mount_device(ctx);
- if (rc) {
- pb_log("mount_device failed for %s\n", event->device);
- talloc_free(ctx);
+ 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;
}
- 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);
+ handler->timeout_waiter = NULL;
- /* run the parsers */
- iterate_parsers(ctx);
+ pb_log("Timeout expired, booting default option %s\n", opt->option->id);
- discover_server_notify_add(handler->server, ctx->device);
+ 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;
}
-static int handle_remove_event(struct device_handler *handler,
- struct udev_event *event)
+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)
{
- struct discover_context *ctx;
+ unsigned int i;
- ctx = find_context(handler, event->device);
- if (!ctx)
- return 0;
+ 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;
- discover_server_notify_remove(handler->server, ctx->device);
+ 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;
- talloc_free(ctx);
+ 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 0;
+ return -1;
}
-int device_handler_event(struct device_handler *handler,
- struct udev_event *event)
+/*
+ * 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)
{
- int rc;
+ 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)
+{
+ enum default_priority cur_prio, new_prio;
+
+ if (!handler->autoboot_enabled)
+ return;
+
+ pb_debug("handler: new default option: %s\n", opt->option->id);
+
+ new_prio = default_option_priority(opt);
- switch (event->action) {
- case UDEV_ACTION_ADD:
- rc = handle_add_event(handler, event);
- break;
+ /* Anything outside our range prevents a default boot */
+ if (new_prio >= DEFAULT_PRIORITY_DISABLED)
+ return;
- case UDEV_ACTION_REMOVE:
- rc = handle_remove_event(handler, event);
- break;
+ 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;
}
- return rc;
+ 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);
}
-struct device_handler *device_handler_init(struct discover_server *server)
+static bool resource_is_resolved(struct resource *res)
{
- struct device_handler *handler;
- unsigned int i;
+ return !res || res->resolved;
+}
- handler = talloc(NULL, struct device_handler);
- handler->devices = NULL;
- handler->n_devices = 0;
- handler->server = server;
+/* 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->args_sig_file) &&
+ resource_is_resolved(opt->icon);
+}
+
+static bool resource_resolve(struct resource *res, const char *name,
+ struct discover_boot_option *opt,
+ struct device_handler *handler)
+{
+ struct parser *parser = opt->source;
- list_init(&handler->contexts);
+ if (resource_is_resolved(res))
+ return true;
- /* set up our mount point base */
- mkdir_recursive(mount_base());
+ pb_debug("Attempting to resolve resource %s->%s with parser %s\n",
+ opt->option->id, name, parser->name);
+ parser->resolve_resource(handler, res);
- /* setup out test objects */
- list_init(&device.boot_options);
+ return res->resolved;
+}
- for (i = 0; i < sizeof(options) / sizeof(options[0]); i++)
- list_add(&device.boot_options, &options[i].list);
+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->args_sig_file, "args_sig_file", opt,
+ handler) &&
+ resource_resolve(opt->icon, "icon", opt, handler);
+}
- parser_init();
+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);
+ assert(!opt->option->args_sig_file);
+
+ 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;
+ if (opt->args_sig_file)
+ opt->option->args_sig_file = opt->args_sig_file->url->full;
+
+ opt->option->device_id = opt->device->device->id;
+
+ if (opt->option->is_default)
+ set_default(handler, opt);
+}
- return handler;
+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);
}
-void device_handler_destroy(struct device_handler *handler)
+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_debug("queue: attempting resolution for %s\n",
+ opt->option->id);
+
+ 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);
+ }
+}
+
+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->handler = handler;
+ ctx->device = device;
+ list_init(&ctx->boot_options);
+
+ return ctx;
+}
+
+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));
+
+ /* 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);
+
+ process_boot_option_queue(handler);
+
+ /* Check this device for pb-plugins */
+ device_handler_plugin_scan_device(handler, dev);
+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 lease response (ip: %s)"),
+ event_get_param(event, "ip"));
+
+ pending_network_jobs_start();
+
+ /* 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;
+}
+
+static void process_url_cb(struct load_url_result *result, void *data)
+{
+ struct device_handler *handler;
+ struct discover_context *ctx;
+ struct discover_device *dev;
+ struct event *event = data;
+ const char *mac;
+
+ if (result->status != LOAD_OK) {
+ pb_log("%s: Load failed for %s\n", __func__, result->url->full);
+ return;
+ }
+
+ if (!event)
+ return;
+
+ handler = talloc_parent(event);
+ if (!handler)
+ return;
+
+ event->device = device_from_addr(event, result->url);
+ if (!event->device) {
+ pb_log("Downloaded a file but can't find its interface - pretending it was local\n");
+ event->device = talloc_asprintf(event, "local");
+ }
+
+ mac = event_get_param(event, "mac");
+ char *url = talloc_asprintf(event, "file://%s", result->local);
+ event_set_param(event, "pxeconffile-local", url);
+
+ dev = discover_device_create(handler, mac, event->device);
+ 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);
+}
+
+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;
+ bool allow_async = false;
+ struct pb_url *pb_url;
+ struct event *event;
+
+ event = talloc_zero(handler, struct event);
+ event->type = EVENT_TYPE_USER;
+ event->action = EVENT_ACTION_URL;
+
+ pb_url = pb_url_parse(event, url);
+ if (!pb_url || (pb_url->scheme != pb_url_file && !pb_url->host)) {
+ device_handler_status_err(handler, _("Invalid config URL!"));
+ talloc_free(event);
+ return;
+ }
+
+ if (url[strlen(url) - 1] == '/') {
+ event_set_param(event, "pxepathprefix", url);
+ event_set_param(event, "mac", mac);
+ event_set_param(event, "ip", ip);
+ 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);
+ talloc_free(event);
+ return;
+ }
+ } else {
+ event_set_param(event, "pxeconffile", url);
+ allow_async = true;
+ }
+
+ if (pb_url->scheme == pb_url_file)
+ event->device = talloc_asprintf(event, "local");
+ else if (allow_async) {
+ /* If file is remote load asynchronously before passing to
+ * parser. This allows us to wait for network to be available */
+ if (!load_url_async(handler, pb_url, process_url_cb, event,
+ NULL, handler)) {
+ pb_log("Failed to load url %s\n", pb_url->full);
+ device_handler_status_err(handler, _("Failed to load URL!"));
+ talloc_free(event);
+ }
+ return;
+ }
+
+ /* If path is local we can parse straight away */
+
+ 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);
+}
+
+static void plugin_install_cb(struct process *process)
+{
+ struct device_handler *handler = process->data;
+
+ if (!handler) {
+ pb_log("%s: Missing data!\n", __func__);
+ return;
+ }
+
+ handler->plugin_installing = false;
+ if (process->exit_status) {
+ device_handler_status_err(handler, "Plugin failed to install!");
+ pb_log("Failed to install plugin:\n%s\n", process->stdout_buf);
+ }
+}
+
+void device_handler_install_plugin(struct device_handler *handler,
+ const char *plugin_file)
+{
+ struct process *p;
+ int result;
+
+ if (handler->plugin_installing) {
+ pb_log("Plugin install cancelled - install already running");
+ return;
+ }
+
+ p = process_create(handler);
+ if (!p) {
+ pb_log("install_plugin: Failed to create process\n");
+ return;
+ }
+
+ const char *argv[] = {
+ pb_system_apps.pb_plugin,
+ "install",
+ "auto",
+ plugin_file,
+ NULL
+ };
+
+ p->path = pb_system_apps.pb_plugin;
+ p->argv = argv;
+ p->exit_cb = plugin_install_cb;
+ p->data = handler;
+ p->keep_stdout = true;
+
+ result = process_run_async(p);
+
+ if (result)
+ device_handler_status_err(handler, "Could not install plugin");
+ else
+ handler->plugin_installing = true;
+}
+
+#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",
+ 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_plugin_option(struct device_handler *handler,
+ struct plugin_option *opt)
+{
+ struct plugin_option *tmp;
+ unsigned int i;
+
+ for (i = 0; i < handler->n_plugins; i++) {
+ tmp = handler->plugins[i];
+ /* If both id and version match, ignore */
+ if (strncmp(opt->id, tmp->id, strlen(opt->id)) == 0 &&
+ strncmp(opt->version, tmp->version,
+ strlen(opt->version) == 0)) {
+ pb_log("discover: Plugin '%s' already exists, ignoring\n",
+ opt->id);
+ return;
+ }
+ }
+
+ handler->plugins = talloc_realloc(handler, handler->plugins,
+ struct plugin_option *, handler->n_plugins + 1);
+ if (!handler->plugins) {
+ pb_log("Failed to allocate memory for new plugin\n");
+ handler->n_plugins = 0;
+ return;
+ }
+
+ handler->plugins[handler->n_plugins++] = opt;
+ discover_server_notify_plugin_option_add(handler->server, opt);
+}
+
+static void device_handler_update_lang(const char *lang)
+{
+ const char *cur_lang;
+
+ if (!lang)
+ return;
+
+ cur_lang = setlocale(LC_ALL, NULL);
+ if (cur_lang && !strcmp(cur_lang, lang))
+ return;
+
+ setlocale(LC_ALL, lang);
+}
+
+static int device_handler_init_sources(struct device_handler *handler)
+{
+ /* init our device sources: udev, network and user events */
+ handler->user_event = user_event_init(handler, handler->waitset);
+ if (!handler->user_event)
+ return -1;
+
+ handler->network = network_init(handler, handler->waitset,
+ handler->dry_run);
+ if (!handler->network)
+ return -1;
+
+ handler->udev = udev_init(handler, handler->waitset);
+ if (!handler->udev)
+ return -1;
+
+ return 0;
+}
+
+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;
+ }
+
+ system_info_reinit();
+
+ network_shutdown(handler->network);
+ handler->network = network_init(handler, handler->waitset,
+ handler->dry_run);
+
+ udev_reinit(handler->udev);
+}
+
+static inline const char *get_device_path(struct discover_device *dev)
+{
+ return dev->ramdisk ? dev->ramdisk->snapshot : dev->device_path;
+}
+
+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;
+
+ if (strncmp(fstype, "btrfs", strlen("btrfs")))
+ return dev->mount_path;
+
+ /* 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 bool check_existing_mount(struct discover_device *dev)
+{
+ struct stat devstat, mntstat;
+ const char *device_path;
+ struct mntent *mnt;
+ FILE *fp;
+ int rc;
+
+ device_path = get_device_path(dev);
+
+ rc = stat(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->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;
+ }
+ }
+
+ fclose(fp);
+
+ return mnt != NULL;
+}
+
+/*
+ * 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;
+
+ /* 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 mount_device(struct discover_device *dev)
+{
+ const char *fstype, *device_path;
+ int rc;
+
+ if (!dev->device_path)
+ return -1;
+
+ if (dev->mounted)
+ return 0;
+
+ if (check_existing_mount(dev))
+ return 0;
+
+ 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;
+ }
+
+ 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 mount fails clean up any snapshot and try again */
+ if (rc && dev->ramdisk) {
+ pb_log("couldn't mount snapshot for %s: mount failed: %s\n",
+ device_path, strerror(errno));
+ pb_log("falling back to actual device\n");
+
+ devmapper_destroy_snapshot(dev);
+
+ 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;
+ }
+
+ pb_log("couldn't mount device %s: mount failed: %s\n",
+ 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;
+}
+
+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;
+}
+
+int device_request_write(struct discover_device *dev, bool *release)
+{
+ const char *fstype, *device_path;
+ const struct config *config;
+ int rc;
+
+ *release = false;
+
+ 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;
+ }
+
+ 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;
+}
+
+void device_release_write(struct discover_device *dev, bool release)
+{
+ const char *fstype, *device_path;
+
+ if (!release)
+ return;
+
+ 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;
+
+ 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_sync_snapshots(struct device_handler *handler, const char *device)
+{
+ struct discover_device *dev = NULL;
+ unsigned int i;
+
+ 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;
+ }
+
+ /* 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);
+ }
+}
+
+#else
+
+void device_handler_discover_context_commit(
+ struct device_handler *handler __attribute__((unused)),
+ struct discover_context *ctx __attribute__((unused)))
+{
+ pb_log("%s stubbed out for test cases\n", __func__);
+}
+
+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)))
+{
+}
+
+void device_sync_snapshots(
+ struct device_handler *handler __attribute__((unused)),
+ const char *device __attribute__((unused)))
{
- talloc_free(handler);
}
+#endif