+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
+
+#include <stdbool.h>
+#include <stdlib.h>
#include <assert.h>
+#include <dirent.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/types.h>
#include <log/log.h>
#include <pb-protocol/pb-protocol.h>
+#include <process/process.h>
#include <system/system.h>
#include <talloc/talloc.h>
#include <url/url.h>
+#include <util/util.h>
+#include <i18n/i18n.h>
#include "device-handler.h"
#include "boot.h"
#include "paths.h"
#include "resource.h"
+#include "platform.h"
+
+#include <security/security.h>
+
+static const char *boot_hook_dir = PKG_SYSCONF_DIR "/boot.d";
+enum {
+ BOOT_HOOK_EXIT_OK = 0,
+ BOOT_HOOK_EXIT_UPDATE = 2,
+};
+
+static void __attribute__((format(__printf__, 4, 5))) update_status(
+ boot_status_fn fn, void *arg, int type, char *fmt, ...)
+{
+ struct status status;
+ va_list ap;
+
+ va_start(ap, fmt);
+ status.message = talloc_vasprintf(NULL, fmt, ap);
+ va_end(ap);
+
+ status.type = type;
+ status.backlog = false;
+ status.boot_active = type == STATUS_INFO;
+
+ pb_debug("boot status: [%d] %s\n", type, status.message);
+
+ fn(arg, &status);
+
+ talloc_free(status.message);
+}
/**
* kexec_load - kexec load helper.
- * @l_image: The local image file for kexec to execute.
- * @l_initrd: Optional local initrd file for kexec --initrd, can be NULL.
- * @args: Optional command line args for kexec --append, can be NULL.
*/
-
-static int kexec_load(const char *l_image, const char *l_initrd,
- const char *args, int dry_run)
+static int kexec_load(struct boot_task *boot_task)
{
- int result;
- const char *argv[6];
- const char **p;
+ struct process *process;
char *s_initrd = NULL;
char *s_args = NULL;
+ const char *argv[8];
+ char *s_dtb = NULL;
+ const char **p;
+ int result;
+
+
+ boot_task->local_initrd_override = NULL;
+ boot_task->local_dtb_override = NULL;
+ boot_task->local_image_override = NULL;
+
+ if ((result = validate_boot_files(boot_task))) {
+ if (result == KEXEC_LOAD_DECRYPTION_FALURE) {
+ pb_log("%s: Aborting kexec due to"
+ " decryption failure\n", __func__);
+ }
+ if (result == KEXEC_LOAD_SIGNATURE_FAILURE) {
+ pb_log("%s: Aborting kexec due to signature"
+ " verification failure\n", __func__);
+ }
+
+ goto abort_kexec;
+ }
+
+ const char* local_initrd = (boot_task->local_initrd_override) ?
+ boot_task->local_initrd_override : boot_task->local_initrd;
+ const char* local_dtb = (boot_task->local_dtb_override) ?
+ boot_task->local_dtb_override : boot_task->local_dtb;
+ const char* local_image = (boot_task->local_image_override) ?
+ boot_task->local_image_override : boot_task->local_image;
+
+ process = process_create(boot_task);
+ if (!process) {
+ pb_log_fn("failed to create process\n");
+ return -1;
+ }
+
+ process->path = pb_system_apps.kexec;
+ process->argv = argv;
+ process->keep_stdout = true;
+ process->add_stderr = true;
p = argv;
*p++ = pb_system_apps.kexec; /* 1 */
*p++ = "-l"; /* 2 */
- if (l_initrd) {
- s_initrd = talloc_asprintf(NULL, "--initrd=%s", l_initrd);
+ if (pb_log_get_debug()) {
+ *p++ = "--debug"; /* 3 */
+ }
+
+ if (local_initrd) {
+ s_initrd = talloc_asprintf(boot_task, "--initrd=%s",
+ local_initrd);
assert(s_initrd);
- *p++ = s_initrd; /* 3 */
+ *p++ = s_initrd; /* 4 */
}
- if (args) {
- s_args = talloc_asprintf(NULL, "--append=%s", args);
- assert(s_args);
- *p++ = s_args; /* 4 */
+ if (local_dtb) {
+ s_dtb = talloc_asprintf(boot_task, "--dtb=%s",
+ local_dtb);
+ assert(s_dtb);
+ *p++ = s_dtb; /* 5 */
}
- *p++ = l_image; /* 5 */
- *p++ = NULL; /* 6 */
+ s_args = talloc_asprintf(boot_task, "--append=%s",
+ boot_task->args ?: "\"\"");
+ assert(s_args);
+ *p++ = s_args; /* 6 */
- result = pb_run_cmd(argv, 1, dry_run);
+ *p++ = local_image; /* 7 */
+ *p++ = NULL; /* 8 */
- if (result)
- pb_log("%s: failed: (%d)\n", __func__, result);
+ result = process_run_sync(process);
+ if (result) {
+ pb_log_fn("failed to run process\n");
+ goto abort_kexec;
+ }
- talloc_free(s_initrd);
- talloc_free(s_args);
+ result = process->exit_status;
+
+ if (result) {
+ pb_log_fn("failed: (%d)\n", result);
+ update_status(boot_task->status_fn, boot_task->status_arg,
+ STATUS_ERROR, "%s", process->stdout_buf);
+ }
+
+abort_kexec:
+ validate_boot_files_cleanup(boot_task);
return result;
}
* Must only be called after a successful call to kexec_load().
*/
-static int kexec_reboot(int dry_run)
+static int kexec_reboot(struct boot_task *task)
{
- int result = 0;
- const char *argv[4];
- const char **p;
+ int result;
/* First try running shutdown. Init scripts should run 'exec -e' */
-
- p = argv;
- *p++ = pb_system_apps.shutdown; /* 1 */
- *p++ = "-r"; /* 2 */
- *p++ = "now"; /* 3 */
- *p++ = NULL; /* 4 */
-
- result = pb_run_cmd(argv, 1, dry_run);
+ result = process_run_simple(task, pb_system_apps.shutdown, "-r",
+ "now", NULL);
/* On error, force a kexec with the -e option */
-
if (result) {
- p = argv;
- *p++ = pb_system_apps.kexec; /* 1 */
- *p++ = "-e"; /* 2 */
- *p++ = NULL; /* 3 */
+ result = process_run_simple(task, pb_system_apps.kexec,
+ "-e", NULL);
+ }
+
+ if (result)
+ pb_log_fn("failed: (%d)\n", result);
- result = pb_run_cmd(argv, 1, 0);
+ /* okay, kexec -e -f */
+ if (result) {
+ result = process_run_simple(task, pb_system_apps.kexec,
+ "-e", "-f", NULL);
}
if (result)
- pb_log("%s: failed: (%d)\n", __func__, result);
+ pb_log_fn("failed: (%d)\n", result);
+
return result;
}
-static void update_status(boot_status_fn fn, void *arg, int type,
- char *message)
+static void boot_hook_update_param(void *ctx, struct boot_task *task,
+ const char *name, const char *value)
{
- struct boot_status status;
+ struct p {
+ const char *name;
+ const char **p;
+ } *param, params[] = {
+ { "boot_image", &task->local_image },
+ { "boot_initrd", &task->local_initrd },
+ { "boot_dtb", &task->local_dtb },
+ { "boot_args", &task->args },
+ { NULL, NULL },
+ };
+
+ for (param = params; param->name; param++) {
+ if (strcmp(param->name, name))
+ continue;
+
+ *param->p = talloc_strdup(ctx, value);
+ return;
+ }
+}
- status.type = type;
- status.message = message;
- status.progress = -1;
- status.detail = NULL;
+static void boot_hook_update(struct boot_task *task, const char *hookname,
+ char *buf)
+{
+ char *line, *name, *val, *sep;
+ char *saveptr = NULL;
- fn(arg, &status);
+ for (;; buf = NULL) {
+
+ line = strtok_r(buf, "\n", &saveptr);
+ if (!line)
+ break;
+
+ sep = strchr(line, '=');
+ if (!sep)
+ continue;
+
+ *sep = '\0';
+ name = line;
+ val = sep + 1;
+
+ boot_hook_update_param(task, task, name, val);
+
+ pb_log("boot hook %s specified %s=%s\n",
+ hookname, name, val);
+ }
}
-int boot(void *ctx, struct discover_boot_option *opt, struct boot_command *cmd,
- int dry_run, boot_status_fn status_fn, void *status_arg)
+static void boot_hook_setenv(struct boot_task *task)
{
- char *local_image, *local_initrd;
- unsigned int clean_image = 0;
- unsigned int clean_initrd = 0;
- struct pb_url *image, *initrd;
- char *args;
- int result;
+ unsetenv("boot_image");
+ unsetenv("boot_initrd");
+ unsetenv("boot_dtb");
+ unsetenv("boot_args");
+ unsetenv("boot_console");
+
+ setenv("boot_image", task->local_image, 1);
+ if (task->local_initrd)
+ setenv("boot_initrd", task->local_initrd, 1);
+ if (task->local_dtb)
+ setenv("boot_dtb", task->local_dtb, 1);
+ if (task->args)
+ setenv("boot_args", task->args, 1);
+ if (task->boot_console)
+ setenv("boot_console", task->boot_console, 1);
+}
+
+static int hook_filter(const struct dirent *dirent)
+{
+ return dirent->d_type == DT_REG || dirent->d_type == DT_LNK;
+}
+
+static int hook_cmp(const struct dirent **a, const struct dirent **b)
+{
+ return strcmp((*a)->d_name, (*b)->d_name);
+}
+
+static void run_boot_hooks(struct boot_task *task)
+{
+ struct dirent **hooks;
+ int i, n;
+
+ n = scandir(boot_hook_dir, &hooks, hook_filter, hook_cmp);
+ if (n < 1)
+ return;
+
+ update_status(task->status_fn, task->status_arg, STATUS_INFO,
+ _("Running boot hooks"));
+
+ boot_hook_setenv(task);
+
+ for (i = 0; i < n; i++) {
+ const char *argv[2] = { NULL, NULL };
+ struct process *process;
+ char *path;
+ int rc;
+
+ path = join_paths(task, boot_hook_dir, hooks[i]->d_name);
+
+ if (access(path, X_OK)) {
+ talloc_free(path);
+ continue;
+ }
+
+ process = process_create(task);
- local_initrd = NULL;
- image = NULL;
- initrd = NULL;
- args = NULL;
+ argv[0] = path;
+ process->path = path;
+ process->argv = argv;
+ process->keep_stdout = true;
- if (cmd->boot_image_file) {
- image = pb_url_parse(opt, cmd->boot_image_file);
+ pb_log("running boot hook %s\n", hooks[i]->d_name);
+
+ rc = process_run_sync(process);
+ if (rc) {
+ pb_log("boot hook exec failed!\n");
+
+ } else if (WIFEXITED(process->exit_status) &&
+ WEXITSTATUS(process->exit_status)
+ == BOOT_HOOK_EXIT_UPDATE) {
+ /* if the hook returned with BOOT_HOOK_EXIT_UPDATE,
+ * then we process stdout to look for updated params
+ */
+ boot_hook_update(task, hooks[i]->d_name,
+ process->stdout_buf);
+ boot_hook_setenv(task);
+ }
+
+ process_release(process);
+ talloc_free(path);
+ }
+
+ free(hooks);
+}
+
+static bool load_pending(struct load_url_result *result)
+{
+ return !result || result->status == LOAD_ASYNC;
+}
+
+static int check_load(struct boot_task *task, const char *name,
+ struct load_url_result *result)
+{
+ if (!result)
+ return 0;
+
+ if (result->status != LOAD_ERROR) {
+ update_status(task->status_fn, task->status_arg,
+ STATUS_ERROR,
+ _("Loaded %s from %s"), name,
+ pb_url_to_string(result->url));
+ return 0;
+ }
+
+ pb_log("Failed to load %s from %s\n", name,
+ pb_url_to_string(result->url));
+ update_status(task->status_fn, task->status_arg,
+ STATUS_ERROR,
+ _("Couldn't load %s from %s"), name,
+ pb_url_to_string(result->url));
+ return -1;
+}
+
+static void cleanup_load(struct load_url_result *result)
+{
+ if (!result)
+ return;
+ if (result->status != LOAD_OK)
+ return;
+ if (!result->cleanup_local)
+ return;
+ unlink(result->local);
+}
+
+static void cleanup_cancellations(struct boot_task *task,
+ struct load_url_result *cur_result)
+{
+ struct boot_resource *resource;
+ struct load_url_result *result;
+ bool pending = false;
+
+ list_for_each_entry(&task->resources, resource, list) {
+ result = resource->result;
+
+ /* Nothing to do if a load hasn't actually started yet */
+ if (!result)
+ continue;
+
+ /* We need to cleanup and free any completed loads */
+ if (result == cur_result || result->status == LOAD_OK
+ || result->status == LOAD_ERROR) {
+ cleanup_load(result);
+ /* ... and cancel any pending loads, which we'll free in
+ * the completion callback */
+ } else if (result->status == LOAD_ASYNC) {
+ load_url_async_cancel(result);
+ pending = true;
+
+ /* if we're waiting for a cancellation, we still need to
+ * wait for the completion before freeing the boot task */
+ } else if (result->status == LOAD_CANCELLED) {
+ pending = true;
+ }
+ }
+
+ if (!pending)
+ talloc_free(task);
+}
+
+static void boot_process(struct load_url_result *result, void *data)
+{
+ struct boot_task *task = data;
+ struct boot_resource *resource;
+ int rc = -1;
+
+ if (task->cancelled) {
+ cleanup_cancellations(task, result);
+ return;
+ }
+
+ list_for_each_entry(&task->resources, resource, list)
+ if (load_pending(resource->result))
+ return;
+
+ list_for_each_entry(&task->resources, resource, list) {
+ if (check_load(task, resource->name, resource->result))
+ goto no_load;
+ *resource->local_path = resource->result->local;
+ }
+
+ run_boot_hooks(task);
+
+ update_status(task->status_fn, task->status_arg, STATUS_INFO,
+ _("Performing kexec load"));
+
+ rc = kexec_load(task);
+ pb_log_fn("kexec_load returned %d\n", rc);
+ if (rc == KEXEC_LOAD_DECRYPTION_FALURE) {
+ update_status(task->status_fn, task->status_arg,
+ STATUS_ERROR, _("Decryption failed"));
+ }
+ else if (rc == KEXEC_LOAD_SIGNATURE_FAILURE) {
+ update_status(task->status_fn, task->status_arg,
+ STATUS_ERROR,
+ _("Signature verification failed"));
+ }
+ else if (rc == KEXEC_LOAD_SIG_SETUP_INVALID) {
+ update_status(task->status_fn, task->status_arg,
+ STATUS_ERROR,
+ _("Invalid signature configuration"));
+ }
+
+no_load:
+ list_for_each_entry(&task->resources, resource, list)
+ cleanup_load(resource->result);
+
+ if (!rc) {
+ update_status(task->status_fn, task->status_arg,
+ STATUS_INFO, _("Performing kexec reboot"));
+
+ rc = kexec_reboot(task);
+ if (rc) {
+ update_status(task->status_fn, task->status_arg,
+ STATUS_ERROR,
+ _("kexec reboot failed"));
+ }
+ } else {
+ pb_log("Failed to load all boot resources\n");
+ }
+}
+
+static int start_url_load(struct boot_task *task, struct boot_resource *res)
+{
+ if (!res)
+ return 0;
+
+ res->result = load_url_async(task, res->url, boot_process,
+ task, NULL, task->status_arg);
+ if (!res->result) {
+ pb_log("Error starting load for %s at %s\n",
+ res->name, pb_url_to_string(res->url));
+ update_status(task->status_fn, task->status_arg,
+ STATUS_ERROR, _("Error loading %s"),
+ res->name);
+ return -1;
+ }
+ return 0;
+}
+
+static struct boot_resource *add_boot_resource(struct boot_task *task,
+ const char *name, struct pb_url *url,
+ const char **local_path)
+{
+ struct boot_resource *res;
+
+ if (!url)
+ return NULL;
+
+ res = talloc_zero(task, struct boot_resource);
+ if (!res)
+ return NULL;
+
+ res->name = talloc_strdup(res, name);
+ res->url = pb_url_copy(res, url);
+ res->local_path = local_path;
+
+ list_add(&task->resources, &res->list);
+ return res;
+}
+
+struct boot_task *boot(void *ctx, struct discover_boot_option *opt,
+ struct boot_command *cmd, int dry_run,
+ boot_status_fn status_fn, void *status_arg)
+{
+ struct pb_url *image = NULL, *initrd = NULL, *dtb = NULL;
+ struct pb_url *image_sig = NULL, *initrd_sig = NULL, *dtb_sig = NULL,
+ *cmdline_sig = NULL;
+ struct boot_resource *image_res, *initrd_res, *dtb_res, *tmp;
+ const struct config *config = config_get();
+ struct boot_task *boot_task;
+ const char *boot_desc;
+ int rc;
+ int lockdown_type;
+
+ if (opt && opt->option->name)
+ boot_desc = opt->option->name;
+ else if (cmd && cmd->boot_image_file)
+ boot_desc = cmd->boot_image_file;
+ else
+ boot_desc = _("(unknown)");
+
+ update_status(status_fn, status_arg, STATUS_INFO,
+ _("Booting %s"), boot_desc);
+
+ boot_task = talloc_zero(ctx, struct boot_task);
+ boot_task->dry_run = dry_run;
+ boot_task->status_fn = status_fn;
+ boot_task->status_arg = status_arg;
+
+ if (cmd && cmd->boot_image_file) {
+ image = pb_url_parse(boot_task, cmd->boot_image_file);
} else if (opt && opt->boot_image) {
image = opt->boot_image->url;
} else {
- pb_log("%s: no image specified", __func__);
- return -1;
+ pb_log_fn("no image specified\n");
+ update_status(status_fn, status_arg, STATUS_ERROR,
+ _("Boot failed: no image specified"));
+ talloc_free(boot_task);
+ return NULL;
}
- if (cmd->initrd_file) {
- initrd = pb_url_parse(opt, cmd->initrd_file);
+ if (cmd && cmd->initrd_file) {
+ initrd = pb_url_parse(boot_task, cmd->initrd_file);
} else if (opt && opt->initrd) {
initrd = opt->initrd->url;
}
- if (cmd->boot_args) {
- args = talloc_strdup(ctx, cmd->boot_args);
- } else if (opt && opt->option->boot_args) {
- args = talloc_strdup(ctx, opt->option->boot_args);
+ if (cmd && cmd->dtb_file) {
+ dtb = pb_url_parse(boot_task, cmd->dtb_file);
+ } else if (opt && opt->dtb) {
+ dtb = opt->dtb->url;
}
- result = -1;
+ if (opt && opt->proxy) {
+ setenv("http_proxy", opt->proxy, 1);
+ setenv("https_proxy", opt->proxy, 1);
+ }
+
+ list_init(&boot_task->resources);
+
+ lockdown_type = lockdown_status();
+ boot_task->verify_signature = (lockdown_type == PB_LOCKDOWN_SIGN);
+ boot_task->decrypt_files = (lockdown_type == PB_LOCKDOWN_DECRYPT);
- update_status(status_fn, status_arg, BOOT_STATUS_INFO,
- "loading kernel");
- local_image = load_url(NULL, image, &clean_image);
- if (!local_image) {
- update_status(status_fn, status_arg, BOOT_STATUS_ERROR,
- "Couldn't load kernel image");
- goto no_load;
+ if (cmd && cmd->boot_args) {
+ boot_task->args = talloc_strdup(boot_task, cmd->boot_args);
+ } else if (opt && opt->option->boot_args) {
+ boot_task->args = talloc_strdup(boot_task,
+ opt->option->boot_args);
+ } else {
+ boot_task->args = NULL;
}
- if (initrd) {
- update_status(status_fn, status_arg, BOOT_STATUS_INFO,
- "loading initrd");
- local_initrd = load_url(NULL, initrd, &clean_initrd);
- if (!local_initrd) {
- update_status(status_fn, status_arg, BOOT_STATUS_ERROR,
- "Couldn't load initrd image");
- goto no_load;
+ if (cmd && cmd->console && !config->manual_console)
+ boot_task->boot_console = talloc_strdup(boot_task, cmd->console);
+ else
+ boot_task->boot_console = config ? config->boot_console : NULL;
+
+ if (boot_task->verify_signature || boot_task->decrypt_files) {
+ if (cmd && cmd->args_sig_file) {
+ cmdline_sig = pb_url_parse(opt, cmd->args_sig_file);
+ } else if (opt && opt->args_sig_file) {
+ cmdline_sig = opt->args_sig_file->url;
+ } else {
+ pb_log("%s: no command line signature file"
+ " specified\n", __func__);
+ update_status(status_fn, status_arg, STATUS_ERROR,
+ _("Boot failed: no command line"
+ " signature file specified"));
+ talloc_free(boot_task);
+ return NULL;
}
}
- update_status(status_fn, status_arg, BOOT_STATUS_INFO,
- "performing kexec_load");
-
- result = kexec_load(local_image, local_initrd, args, dry_run);
+ image_res = add_boot_resource(boot_task, _("kernel image"), image,
+ &boot_task->local_image);
+ initrd_res = add_boot_resource(boot_task, _("initrd"), initrd,
+ &boot_task->local_initrd);
+ dtb_res = add_boot_resource(boot_task, _("dtb"), dtb,
+ &boot_task->local_dtb);
+
+ /* start async loads for boot resources */
+ rc = start_url_load(boot_task, image_res)
+ || start_url_load(boot_task, initrd_res)
+ || start_url_load(boot_task, dtb_res);
+
+ if (boot_task->verify_signature) {
+ /* Generate names of associated signature files and load */
+ if (image) {
+ image_sig = get_signature_url(ctx, image);
+ tmp = add_boot_resource(boot_task,
+ _("kernel image signature"), image_sig,
+ &boot_task->local_image_signature);
+ rc |= start_url_load(boot_task, tmp);
+ }
+ if (initrd) {
+ initrd_sig = get_signature_url(ctx, initrd);
+ tmp = add_boot_resource(boot_task,
+ _("initrd signature"), initrd_sig,
+ &boot_task->local_initrd_signature);
+ rc |= start_url_load(boot_task, tmp);
+ }
+ if (dtb) {
+ dtb_sig = get_signature_url(ctx, dtb);
+ tmp = add_boot_resource(boot_task,
+ _("dtb signature"), dtb_sig,
+ &boot_task->local_dtb_signature);
+ rc |= start_url_load(boot_task, tmp);
+ }
+ }
- if (result) {
- update_status(status_fn, status_arg, BOOT_STATUS_ERROR,
- "kexec load failed");
+ if (boot_task->verify_signature || boot_task->decrypt_files) {
+ tmp = add_boot_resource(boot_task,
+ _("kernel command line signature"), cmdline_sig,
+ &boot_task->local_cmdline_signature);
+ rc |= start_url_load(boot_task, tmp);
}
-no_load:
- if (clean_image)
- unlink(local_image);
- if (clean_initrd)
- unlink(local_initrd);
+ /* If all URLs are local, we may be done. */
+ if (rc) {
+ /* Don't call boot_cancel() to preserve the status update */
+ boot_task->cancelled = true;
+ cleanup_cancellations(boot_task, NULL);
+ return NULL;
+ }
- talloc_free(local_image);
- talloc_free(local_initrd);
+ boot_process(NULL, boot_task);
- if (!result) {
- update_status(status_fn, status_arg, BOOT_STATUS_INFO,
- "performing kexec reboot");
+ return boot_task;
+}
- result = kexec_reboot(dry_run);
+void boot_cancel(struct boot_task *task)
+{
+ task->cancelled = true;
- if (result) {
- update_status(status_fn, status_arg, BOOT_STATUS_ERROR,
- "kexec reboot failed");
- }
- }
+ update_status(task->status_fn, task->status_arg, STATUS_ERROR,
+ _("Boot cancelled"));
- return result;
+ cleanup_cancellations(task, NULL);
}
projects / petitboot / blobdiff