-#define _GNU_SOURCE
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
#include <stdbool.h>
#include <stdlib.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"
static const char *boot_hook_dir = PKG_SYSCONF_DIR "/boot.d";
enum {
BOOT_HOOK_EXIT_UPDATE = 2,
};
-
struct boot_task {
- char *local_image;
- char *local_initrd;
- char *local_dtb;
- char *args;
-
+ struct load_url_result *image;
+ struct load_url_result *initrd;
+ struct load_url_result *dtb;
+ const char *local_image;
+ const char *local_initrd;
+ const char *local_dtb;
+ const char *args;
+ const char *boot_tty;
+ boot_status_fn status_fn;
+ void *status_arg;
bool dry_run;
+ bool cancelled;
};
/**
*p++ = "-l"; /* 2 */
if (boot_task->local_initrd) {
- s_initrd = talloc_asprintf(NULL, "--initrd=%s",
+ s_initrd = talloc_asprintf(boot_task, "--initrd=%s",
boot_task->local_initrd);
assert(s_initrd);
*p++ = s_initrd; /* 3 */
}
if (boot_task->local_dtb) {
- s_dtb = talloc_asprintf(NULL, "--dtb=%s", boot_task->local_dtb);
+ s_dtb = talloc_asprintf(boot_task, "--dtb=%s",
+ boot_task->local_dtb);
assert(s_dtb);
*p++ = s_dtb; /* 4 */
}
- if (boot_task->args) {
- s_args = talloc_asprintf(NULL, "--append=%s", boot_task->args);
- assert(s_args);
- *p++ = s_args; /* 5 */
- }
+ s_args = talloc_asprintf(boot_task, "--append=%s",
+ boot_task->args ?: "\"\"");
+ assert(s_args);
+ *p++ = s_args; /* 5 */
*p++ = boot_task->local_image; /* 6 */
*p++ = NULL; /* 7 */
- result = pb_run_cmd(argv, 1, boot_task->dry_run);
+ result = process_run_simple_argv(boot_task, argv);
if (result)
pb_log("%s: failed: (%d)\n", __func__, result);
- talloc_free(s_initrd);
- talloc_free(s_dtb);
- talloc_free(s_args);
-
return result;
}
* Must only be called after a successful call to kexec_load().
*/
-static int kexec_reboot(bool 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 = pb_run_cmd(argv, 1, 0);
+ result = process_run_simple(task, pb_system_apps.kexec,
+ "-e", NULL);
}
if (result)
/* okay, kexec -e -f */
if (result) {
- p = argv;
- *p++ = pb_system_apps.kexec; /* 1 */
- *p++ = "-e"; /* 2 */
- *p++ = "-f"; /* 3 */
- *p++ = NULL; /* 4 */
-
- result = pb_run_cmd(argv, 1, 0);
+ result = process_run_simple(task, pb_system_apps.kexec,
+ "-e", "-f", NULL);
}
if (result)
return result;
}
-static void update_status(boot_status_fn fn, void *arg, int type,
- char *message)
+static void __attribute__((format(__printf__, 4, 5))) update_status(
+ boot_status_fn fn, void *arg, int type, char *fmt, ...)
{
struct boot_status status;
+ va_list ap;
+
+ va_start(ap, fmt);
+ status.message = talloc_vasprintf(NULL, fmt, ap);
+ va_end(ap);
status.type = type;
- status.message = message;
status.progress = -1;
status.detail = NULL;
+ pb_debug("boot status: [%d] %s\n", type, status.message);
+
fn(arg, &status);
+
+ talloc_free(status.message);
}
static void boot_hook_update_param(void *ctx, struct boot_task *task,
{
struct p {
const char *name;
- char **p;
+ const char **p;
} *param, params[] = {
{ "boot_image", &task->local_image },
{ "boot_initrd", &task->local_initrd },
}
}
-static void boot_hook_update(void *ctx, const char *hookname,
- struct boot_task *task, char *buf)
+static void boot_hook_update(struct boot_task *task, const char *hookname,
+ char *buf)
{
char *line, *name, *val, *sep;
- char *saveptr;
+ char *saveptr = NULL;
for (;; buf = NULL) {
name = line;
val = sep + 1;
- boot_hook_update_param(ctx, task, name, val);
+ boot_hook_update_param(task, task, name, val);
pb_log("boot hook %s specified %s=%s\n",
hookname, name, val);
unsetenv("boot_initrd");
unsetenv("boot_dtb");
unsetenv("boot_args");
+ unsetenv("boot_tty");
setenv("boot_image", task->local_image, 1);
if (task->local_initrd)
setenv("boot_dtb", task->local_dtb, 1);
if (task->args)
setenv("boot_args", task->args, 1);
+ if (task->boot_tty)
+ setenv("boot_tty", task->boot_tty, 1);
}
static int hook_filter(const struct dirent *dirent)
return strcmp((*a)->d_name, (*b)->d_name);
}
-static void run_boot_hooks(void *ctx, struct boot_task *task,
- boot_status_fn status_fn, void *status_arg)
+static void run_boot_hooks(struct boot_task *task)
{
struct dirent **hooks;
int i, n;
if (n < 1)
return;
- update_status(status_fn, status_arg, BOOT_STATUS_INFO,
- "running boot hooks");
+ update_status(task->status_fn, task->status_arg, BOOT_STATUS_INFO,
+ _("running boot hooks"));
boot_hook_setenv(task);
for (i = 0; i < n; i++) {
const char *argv[2] = { NULL, NULL };
- char *path, *buf;
- int buf_len, rc;
+ struct process *process;
+ char *path;
+ int rc;
- path = join_paths(ctx, boot_hook_dir, hooks[i]->d_name);
+ path = join_paths(task, boot_hook_dir, hooks[i]->d_name);
- if (access(path, X_OK))
+ if (access(path, X_OK)) {
+ talloc_free(path);
continue;
+ }
- pb_log("running boot hook %s\n", hooks[i]->d_name);
+ process = process_create(task);
argv[0] = path;
- rc = pb_run_cmd_pipe(argv, 1, task->dry_run, ctx,
- &buf, &buf_len);
-
- /* if the hook returned with BOOT_HOOK_EXIT_UPDATE,
- * then we process stdout to look for updated params
- */
- if (rc == BOOT_HOOK_EXIT_UPDATE) {
- boot_hook_update(ctx, hooks[i]->d_name, task, buf);
+ process->path = path;
+ process->argv = argv;
+ process->keep_stdout = true;
+
+ 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);
}
- talloc_free(buf);
+ process_release(process);
talloc_free(path);
}
free(hooks);
}
-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 bool load_pending(struct load_url_result *result)
{
- struct boot_task boot_task;
- struct pb_url *image, *initrd, *dtb;
- unsigned int clean_image = 0;
- unsigned int clean_initrd = 0;
- unsigned int clean_dtb = 0;
- int result;
+ return result && result->status == LOAD_ASYNC;
+}
- image = NULL;
- initrd = NULL;
- dtb = NULL;
- boot_task.dry_run = dry_run;
+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)
+ return 0;
+
+ update_status(task->status_fn, task->status_arg,
+ BOOT_STATUS_ERROR,
+ _("Couldn't load %s"), name);
+ 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 load_url_result *result, **results[] = {
+ &task->image, &task->initrd, &task->dtb,
+ };
+ bool pending = false;
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(results); i++) {
+ result = *results[i];
+
+ 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);
+ talloc_free(result);
+ *results[i] = NULL;
+
+ /* ... 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;
+ int rc = -1;
+
+ if (task->cancelled) {
+ cleanup_cancellations(task, result);
+ return;
+ }
+
+ if (load_pending(task->image) ||
+ load_pending(task->initrd) ||
+ load_pending(task->dtb))
+ return;
+
+ if (check_load(task, "kernel image", task->image) ||
+ check_load(task, "initrd", task->initrd) ||
+ check_load(task, "dtb", task->dtb))
+ goto no_load;
+
+ /* we make a copy of the local paths, as the boot hooks might update
+ * and/or create these */
+ task->local_image = task->image ? task->image->local : NULL;
+ task->local_initrd = task->initrd ? task->initrd->local : NULL;
+ task->local_dtb = task->dtb ? task->dtb->local : NULL;
+
+ run_boot_hooks(task);
+
+ update_status(task->status_fn, task->status_arg, BOOT_STATUS_INFO,
+ _("performing kexec_load"));
+
+ rc = kexec_load(task);
+ if (rc) {
+ update_status(task->status_fn, task->status_arg,
+ BOOT_STATUS_ERROR, _("kexec load failed"));
+ }
+
+no_load:
+ cleanup_load(task->image);
+ cleanup_load(task->initrd);
+ cleanup_load(task->dtb);
+
+ if (!rc) {
+ update_status(task->status_fn, task->status_arg,
+ BOOT_STATUS_INFO,
+ _("performing kexec reboot"));
+
+ rc = kexec_reboot(task);
+ if (rc) {
+ update_status(task->status_fn, task->status_arg,
+ BOOT_STATUS_ERROR,
+ _("kexec reboot failed"));
+ }
+ }
+}
+
+static int start_url_load(struct boot_task *task, const char *name,
+ struct pb_url *url, struct load_url_result **result)
+{
+ if (!url)
+ return 0;
+
+ *result = load_url_async(task, url, boot_process, task);
+ if (!*result) {
+ update_status(task->status_fn, task->status_arg,
+ BOOT_STATUS_ERROR,
+ _("Error loading %s"), name);
+ return -1;
+ }
+ return 0;
+}
+
+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;
+ const struct config *config;
+ struct boot_task *boot_task;
+ const char *boot_desc;
+ int rc;
+
+ 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, BOOT_STATUS_INFO,
+ _("Booting %s."), boot_desc);
if (cmd && cmd->boot_image_file) {
image = pb_url_parse(opt, 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("%s: no image specified\n", __func__);
+ update_status(status_fn, status_arg, BOOT_STATUS_INFO,
+ _("Boot failed: no image specified"));
+ return NULL;
}
if (cmd && cmd->initrd_file) {
dtb = opt->dtb->url;
}
+ 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_args) {
- boot_task.args = talloc_strdup(ctx, 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(ctx, opt->option->boot_args);
+ boot_task->args = talloc_strdup(boot_task,
+ opt->option->boot_args);
} else {
- boot_task.args = NULL;
+ boot_task->args = NULL;
}
- result = -1;
-
- boot_task.local_initrd = NULL;
- boot_task.local_dtb = NULL;
-
- update_status(status_fn, status_arg, BOOT_STATUS_INFO,
- "loading kernel");
- boot_task.local_image = load_url(NULL, image, &clean_image);
- if (!boot_task.local_image) {
- update_status(status_fn, status_arg, BOOT_STATUS_ERROR,
- "Couldn't load kernel image");
- goto no_load;
+ if (cmd && cmd->tty)
+ boot_task->boot_tty = talloc_strdup(boot_task, cmd->tty);
+ else {
+ config = config_get();
+ boot_task->boot_tty = config ? config->boot_tty : NULL;
}
- if (initrd) {
- update_status(status_fn, status_arg, BOOT_STATUS_INFO,
- "loading initrd");
- boot_task.local_initrd = load_url(NULL, initrd, &clean_initrd);
- if (!boot_task.local_initrd) {
- update_status(status_fn, status_arg, BOOT_STATUS_ERROR,
- "Couldn't load initrd image");
- goto no_load;
- }
- }
+ /* start async loads for boot resources */
+ rc = start_url_load(boot_task, "kernel image", image, &boot_task->image)
+ || start_url_load(boot_task, "initrd", initrd, &boot_task->initrd)
+ || start_url_load(boot_task, "dtb", dtb, &boot_task->dtb);
- if (dtb) {
- update_status(status_fn, status_arg, BOOT_STATUS_INFO,
- "loading device tree");
- boot_task.local_dtb = load_url(NULL, dtb, &clean_dtb);
- if (!boot_task.local_dtb) {
- update_status(status_fn, status_arg, BOOT_STATUS_ERROR,
- "Couldn't load device tree");
- goto no_load;
- }
+ if (rc) {
+ /* Don't call boot_cancel() to preserve the status update */
+ boot_task->cancelled = true;
+ cleanup_cancellations(boot_task, NULL);
+ return NULL;
}
- run_boot_hooks(ctx, &boot_task, status_fn, status_arg);
-
- update_status(status_fn, status_arg, BOOT_STATUS_INFO,
- "performing kexec_load");
-
- result = kexec_load(&boot_task);
-
- if (result) {
- update_status(status_fn, status_arg, BOOT_STATUS_ERROR,
- "kexec load failed");
- }
+ boot_process(NULL, boot_task);
-no_load:
- if (clean_image)
- unlink(boot_task.local_image);
- if (clean_initrd)
- unlink(boot_task.local_initrd);
- if (clean_dtb)
- unlink(boot_task.local_dtb);
-
- talloc_free(boot_task.local_image);
- talloc_free(boot_task.local_initrd);
- talloc_free(boot_task.local_dtb);
-
- if (!result) {
- update_status(status_fn, status_arg, BOOT_STATUS_INFO,
- "performing kexec reboot");
+ return boot_task;
+}
- result = kexec_reboot(boot_task.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, BOOT_STATUS_INFO,
+ _("Boot cancelled"));
- return result;
+ cleanup_cancellations(task, NULL);
}