#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,
+};
+
struct boot_task {
char *local_image;
char *local_initrd;
char *local_dtb;
- const char *args;
+ char *args;
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 */
}
if (result)
pb_log("%s: failed: (%d)\n", __func__, result);
- talloc_free(s_initrd);
- talloc_free(s_dtb);
- talloc_free(s_args);
-
return result;
}
fn(arg, &status);
}
+static void boot_hook_update_param(void *ctx, struct boot_task *task,
+ const char *name, const char *value)
+{
+ 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;
+ }
+}
+
+static void boot_hook_update(struct boot_task *task, const char *hookname,
+ char *buf)
+{
+ char *line, *name, *val, *sep;
+ char *saveptr;
+
+ 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);
+ }
+}
+
+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);
+}
+
static int hook_filter(const struct dirent *dirent)
{
return dirent->d_type == DT_REG || dirent->d_type == DT_LNK;
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, boot_status_fn status_fn,
+ void *status_arg)
{
struct dirent **hooks;
int i, n;
update_status(status_fn, status_arg, BOOT_STATUS_INFO,
"running boot hooks");
- /* pass boot data to hooks */
- 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);
+ boot_hook_setenv(task);
for (i = 0; i < n; i++) {
- char *path;
const char *argv[2] = { NULL, NULL };
+ char *path, *buf;
+ int buf_len, 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))
continue;
pb_log("running boot hook %s\n", hooks[i]->d_name);
argv[0] = path;
- pb_run_cmd(argv, 1, task->dry_run);
+ rc = pb_run_cmd_pipe(argv, 1, task->dry_run, task,
+ &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(task, hooks[i]->d_name, buf);
+ boot_hook_setenv(task);
+ }
+ talloc_free(buf);
talloc_free(path);
}
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 boot_task *boot_task;
struct pb_url *image, *initrd, *dtb;
unsigned int clean_image = 0;
unsigned int clean_initrd = 0;
image = NULL;
initrd = NULL;
dtb = NULL;
- boot_task.dry_run = dry_run;
if (cmd && cmd->boot_image_file) {
image = pb_url_parse(opt, cmd->boot_image_file);
return -1;
}
+ boot_task = talloc_zero(ctx, struct boot_task);
+ boot_task->dry_run = dry_run;
+
if (cmd && cmd->initrd_file) {
initrd = pb_url_parse(opt, cmd->initrd_file);
} else if (opt && opt->initrd) {
}
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;
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) {
+ 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;
}
- 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) {
+ 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;
}
}
- 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) {
+ 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;
}
}
- run_boot_hooks(ctx, &boot_task, status_fn, status_arg);
+ run_boot_hooks(boot_task, status_fn, status_arg);
update_status(status_fn, status_arg, BOOT_STATUS_INFO,
"performing kexec_load");
- result = kexec_load(&boot_task);
+ result = kexec_load(boot_task);
if (result) {
update_status(status_fn, status_arg, BOOT_STATUS_ERROR,
no_load:
if (clean_image)
- unlink(boot_task.local_image);
+ unlink(boot_task->local_image);
if (clean_initrd)
- unlink(boot_task.local_initrd);
+ unlink(boot_task->local_initrd);
if (clean_dtb)
- unlink(boot_task.local_dtb);
+ unlink(boot_task->local_dtb);
- talloc_free(boot_task.local_image);
- talloc_free(boot_task.local_initrd);
- talloc_free(boot_task.local_dtb);
+ talloc_free(boot_task);
if (!result) {
update_status(status_fn, status_arg, BOOT_STATUS_INFO,
"performing kexec reboot");
- result = kexec_reboot(boot_task.dry_run);
+ result = kexec_reboot(boot_task->dry_run);
if (result) {
update_status(status_fn, status_arg, BOOT_STATUS_ERROR,
projects / petitboot / blobdiff