+#define _GNU_SOURCE
+
#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 "paths.h"
#include "resource.h"
+static const char *boot_hook_dir = PKG_SYSCONF_DIR "/boot.d";
+enum {
+ BOOT_HOOK_EXIT_OK = 0,
+ BOOT_HOOK_EXIT_UPDATE = 2,
+};
+
+enum boot_process_state {
+ BOOT_STATE_INITIAL,
+ BOOT_STATE_IMAGE_LOADING,
+ BOOT_STATE_INITRD_LOADING,
+ BOOT_STATE_FINISH,
+ BOOT_STATE_UNKNOWN,
+};
+
+
struct boot_task {
char *local_image;
char *local_initrd;
char *local_dtb;
- const char *args;
-
+ char *args;
+ struct pb_url *image, *initrd, *dtb;
+ boot_status_fn status_fn;
+ void *status_arg;
+ enum boot_process_state state;
bool dry_run;
};
*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);
+ 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;
fn(arg, &status);
+
+ talloc_free(status.message);
}
-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_update_param(void *ctx, struct boot_task *task,
+ const char *name, const char *value)
{
- 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;
+ struct p {
+ const char *name;
+ 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;
+ }
+}
- image = NULL;
- initrd = NULL;
- dtb = NULL;
- boot_task.dry_run = dry_run;
+static void boot_hook_update(struct boot_task *task, const char *hookname,
+ char *buf)
+{
+ char *line, *name, *val, *sep;
+ char *saveptr;
- 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;
- }
+ for (;; buf = NULL) {
- if (cmd && cmd->initrd_file) {
- initrd = pb_url_parse(opt, cmd->initrd_file);
- } else if (opt && opt->initrd) {
- initrd = opt->initrd->url;
- }
+ line = strtok_r(buf, "\n", &saveptr);
+ if (!line)
+ break;
- if (cmd && cmd->dtb_file) {
- dtb = pb_url_parse(opt, cmd->dtb_file);
- } else if (opt && opt->dtb) {
- dtb = opt->dtb->url;
- }
+ sep = strchr(line, '=');
+ if (!sep)
+ continue;
- if (cmd && cmd->boot_args) {
- boot_task.args = talloc_strdup(ctx, cmd->boot_args);
- } else if (opt && opt->option->boot_args) {
- boot_task.args = talloc_strdup(ctx, opt->option->boot_args);
- } else {
- boot_task.args = NULL;
+ *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);
}
+}
- result = -1;
+static void boot_hook_setenv(struct boot_task *task)
+{
+ unsetenv("boot_image");
+ unsetenv("boot_initrd");
+ unsetenv("boot_dtb");
+ unsetenv("boot_args");
+
+ 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);
+}
- 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;
+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, BOOT_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);
+
+ argv[0] = path;
+ 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
+ */
+ if (rc == BOOT_HOOK_EXIT_UPDATE) {
+ boot_hook_update(task, hooks[i]->d_name,
+ process->stdout_buf);
+ boot_hook_setenv(task);
+ }
+ }
+
+ process_release(process);
+ talloc_free(path);
}
- boot_task.local_initrd = 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");
+ free(hooks);
+}
+
+static void boot_process(void *ctx, int status __attribute__((unused)))
+{
+ struct boot_task *task = ctx;
+ unsigned int clean_image = 0;
+ unsigned int clean_initrd = 0;
+ unsigned int clean_dtb = 0;
+ int result = -1;
+
+ if (task->state == BOOT_STATE_INITIAL) {
+ update_status(task->status_fn, task->status_arg,
+ BOOT_STATUS_INFO, "loading kernel");
+ task->local_image = load_url_async(task, task->image,
+ &clean_image, boot_process);
+ if (!task->local_image) {
+ update_status(task->status_fn, task->status_arg,
+ BOOT_STATUS_ERROR,
+ "Couldn't load kernel image");
goto no_load;
+ } else {
+ task->state = BOOT_STATE_IMAGE_LOADING;
+ return;
}
}
- boot_task.local_dtb = NULL;
- 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 (task->state == BOOT_STATE_IMAGE_LOADING) {
+ if (task->initrd) {
+ update_status(task->status_fn, task->status_arg,
+ BOOT_STATUS_INFO, "loading initrd");
+ task->local_initrd = load_url_async(task, task->initrd,
+ &clean_initrd, boot_process);
+ if (!task->local_initrd) {
+ update_status(task->status_fn, task->status_arg,
+ BOOT_STATUS_ERROR,
+ "Couldn't load initrd image");
+ goto no_load;
+ } else {
+ task->state = BOOT_STATE_INITRD_LOADING;
+ return;
+ }
+ } else {
+ task->state = BOOT_STATE_INITRD_LOADING;
}
}
- update_status(status_fn, status_arg, BOOT_STATUS_INFO,
+ if (task->state == BOOT_STATE_INITRD_LOADING) {
+ if (task->dtb) {
+ update_status(task->status_fn, task->status_arg,
+ BOOT_STATUS_INFO,
+ "loading device tree");
+ task->local_dtb = load_url_async(task, task->dtb,
+ &clean_dtb, boot_process);
+ if (!task->local_dtb) {
+ update_status(task->status_fn, task->status_arg,
+ BOOT_STATUS_ERROR,
+ "Couldn't load device tree");
+ goto no_load;
+ } else {
+ task->state = BOOT_STATE_FINISH;
+ return;
+ }
+ } else {
+ task->state = BOOT_STATE_FINISH;
+ }
+ }
+
+ if (task->state != BOOT_STATE_FINISH) {
+ task->state = BOOT_STATE_UNKNOWN;
+ return;
+ }
+
+ run_boot_hooks(task);
+
+ update_status(task->status_fn, task->status_arg, BOOT_STATUS_INFO,
"performing kexec_load");
- result = kexec_load(&boot_task);
+ result = kexec_load(task);
if (result) {
- update_status(status_fn, status_arg, BOOT_STATUS_ERROR,
- "kexec load failed");
+ update_status(task->status_fn, task->status_arg,
+ BOOT_STATUS_ERROR, "kexec load failed");
}
no_load:
if (clean_image)
- unlink(boot_task.local_image);
+ unlink(task->local_image);
if (clean_initrd)
- unlink(boot_task.local_initrd);
+ unlink(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);
+ unlink(task->local_dtb);
if (!result) {
- update_status(status_fn, status_arg, BOOT_STATUS_INFO,
+ update_status(task->status_fn, task->status_arg,
+ BOOT_STATUS_INFO,
"performing kexec reboot");
- result = kexec_reboot(boot_task.dry_run);
+ result = kexec_reboot(task);
if (result) {
- update_status(status_fn, status_arg, BOOT_STATUS_ERROR,
+ update_status(task->status_fn, task->status_arg,
+ BOOT_STATUS_ERROR,
"kexec reboot failed");
}
}
- return result;
+ talloc_free(task);
+}
+
+int boot(void *ctx, struct discover_boot_option *opt, struct boot_command *cmd,
+ int dry_run, boot_status_fn status_fn, void *status_arg)
+{
+ struct boot_task *boot_task;
+ struct pb_url *image = NULL;
+ const char *boot_desc;
+
+ 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\n", __func__);
+ update_status(status_fn, status_arg, BOOT_STATUS_INFO,
+ "Boot failed: no image specified");
+ return -1;
+ }
+
+ boot_task = talloc_zero(ctx, struct boot_task);
+ boot_task->image = image;
+ boot_task->dry_run = dry_run;
+ boot_task->status_fn = status_fn;
+ boot_task->status_arg = status_arg;
+ boot_task->state = BOOT_STATE_INITIAL;
+
+ if (cmd && cmd->initrd_file) {
+ boot_task->initrd = pb_url_parse(opt, cmd->initrd_file);
+ } else if (opt && opt->initrd) {
+ boot_task->initrd = opt->initrd->url;
+ }
+
+ if (cmd && cmd->dtb_file) {
+ boot_task->dtb = pb_url_parse(opt, cmd->dtb_file);
+ } else if (opt && opt->dtb) {
+ boot_task->dtb = opt->dtb->url;
+ }
+
+ 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;
+ }
+
+ boot_process(boot_task, 0);
+
+ return 0;
}
projects / petitboot / blobdiff