#include "ui-system.h"
/**
- * run_kexec_local - Final kexec helper.
+ * pb_start_daemon - start the pb-discover daemon.
+ */
+
+int pb_start_daemon(void)
+{
+ int result;
+ const char *argv[2];
+ char *name = talloc_asprintf(NULL, "%s/sbin/pb-discover",
+ pb_system_apps.prefix);
+
+ argv[0] = name;
+ argv[1] = NULL;
+
+ result = pb_run_cmd(argv, 0, 0);
+
+ talloc_free(name);
+
+ if (result)
+ pb_log("%s: failed: (%d)\n", __func__, result);
+
+ return result;
+}
+
+/**
+ * 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 run_kexec_local(const char *l_image, const char *l_initrd,
- const char *args)
+static int kexec_load(const char *l_image, const char *l_initrd,
+ const char *args, int dry_run)
{
int result;
- const char *argv[8];
+ const char *argv[6];
const char **p;
+ char *s_initrd = NULL;
+ char *s_args = NULL;
p = argv;
- *p++ = pb_system_apps.kexec; /* 1 */
+ *p++ = pb_system_apps.kexec; /* 1 */
+ *p++ = "-l"; /* 2 */
if (l_initrd) {
- *p++ = "--initrd"; /* 2 */
- *p++ = l_initrd; /* 3 */
+ s_initrd = talloc_asprintf(NULL, "--initrd=%s", l_initrd);
+ assert(s_initrd);
+ *p++ = s_initrd; /* 3 */
}
if (args) {
- *p++ = "--append"; /* 4 */
- *p++ = args; /* 5 */
+ s_args = talloc_asprintf(NULL, "--append=%s", args);
+ assert(s_args);
+ *p++ = s_args; /* 4 */
}
- /* First try by telling kexec to run shutdown */
+ *p++ = l_image; /* 5 */
+ *p++ = NULL; /* 6 */
+
+ result = pb_run_cmd(argv, 1, dry_run);
+
+ if (result)
+ pb_log("%s: failed: (%d)\n", __func__, result);
+
+ talloc_free(s_initrd);
+ talloc_free(s_args);
- *(p + 0) = l_image;
- *(p + 1) = NULL;
+ return result;
+}
+
+/**
+ * kexec_reboot - Helper to boot the new kernel.
+ *
+ * Must only be called after a successful call to kexec_load().
+ */
+
+static int kexec_reboot(int dry_run)
+{
+ int result = 0;
+ const char *argv[4];
+ const char **p;
+
+ /* First try running shutdown. Init scripts should run 'exec -e' */
- result = pb_run_cmd(argv);
+ 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);
- /* kexec will return zero on success */
- /* On error, force a kexec with the -f option */
+ /* On error, force a kexec with the -e option */
if (result) {
- *(p + 0) = "-f"; /* 6 */
- *(p + 1) = l_image; /* 7 */
- *(p + 2) = NULL; /* 8 */
+ p = argv;
+ *p++ = pb_system_apps.kexec; /* 1 */
+ *p++ = "-e"; /* 2 */
+ *p++ = NULL; /* 3 */
- result = pb_run_cmd(argv);
+ result = pb_run_cmd(argv, 1, 0);
}
if (result)
}
/**
- * pb_run_kexec - Run kexec with the supplied boot options.
- *
- * For the convenience of the user, tries to load both files before
- * returning error.
+ * pb_boot - Run kexec with the supplied boot options.
*/
-int pb_run_kexec(const struct pb_kexec_data *kd)
+int pb_boot(const struct pb_boot_data *bd, int dry_run)
{
int result;
- char *l_image;
- char *l_initrd;
-
- pb_log("%s: image: '%s'\n", __func__, kd->image);
- pb_log("%s: initrd: '%s'\n", __func__, kd->initrd);
- pb_log("%s: args: '%s'\n", __func__, kd->args);
-
- if (kd->image)
- l_image = pb_load_file(NULL, kd->image);
- else {
- l_image = NULL;
- pb_log("%s: error null image\n", __func__);
+ char *l_image = NULL;
+ char *l_initrd = NULL;
+ unsigned int clean_image = 0;
+ unsigned int clean_initrd = 0;
+
+ pb_log("%s: image: '%s'\n", __func__, bd->image);
+ pb_log("%s: initrd: '%s'\n", __func__, bd->initrd);
+ pb_log("%s: args: '%s'\n", __func__, bd->args);
+
+ result = -1;
+
+ if (bd->image) {
+ l_image = pb_load_file(NULL, bd->image, &clean_image);
+ if (!l_image)
+ goto no_load;
+ }
+
+ if (bd->initrd) {
+ l_initrd = pb_load_file(NULL, bd->initrd, &clean_initrd);
+ if (!l_initrd)
+ goto no_load;
}
- l_initrd = kd->initrd ? pb_load_file(NULL, kd->initrd) : NULL;
+ if (!l_image && !l_initrd)
+ goto no_load;
- if (!l_image || (kd->initrd && !l_initrd))
- result = -1;
- else
- result = run_kexec_local(l_image, l_initrd, kd->args);
+ result = kexec_load(l_image, l_initrd, bd->args, dry_run);
+
+no_load:
+ if (clean_image)
+ unlink(l_image);
+ if (clean_initrd)
+ unlink(l_initrd);
talloc_free(l_image);
talloc_free(l_initrd);
+ if (!result)
+ result = kexec_reboot(dry_run);
+
return result;
}
projects / petitboot / blobdiff