Try to unmount writable filesystems when rebooting
Ext4 filesystems like to be unmounted before rebooting. The Android system
doesn't have a traditional Linux init setup, and shutting down the system
was not much more than calling sync(2) and reboot(2). This adds a new
function to libcutils called android_reboot(). By default, it calls sync()
and then remounts all writable filesystems as read-only and marks them clean.
There is a flag parameter in which the caller can ask for sync() not to be
called, or to not remount the filesystems as read-only. Then it will call
reboot(2) as directed by the other parameters. This change also updates
adb, init and toolbox to call the new android_reboot() function.
Fixes bugs 3350709 and 3495575.
Change-Id: I16d71ffce3134310d7a260f61ec6f4dd204124a7
diff --git a/toolbox/wipe.c b/toolbox/wipe.c
index 7e263fd..650a0d6 100644
--- a/toolbox/wipe.c
+++ b/toolbox/wipe.c
@@ -5,7 +5,7 @@
#include <string.h>
#include <errno.h>
#include <sys/types.h>
-#include <sys/reboot.h>
+#include <cutils/android_reboot.h>
#include <sys/stat.h>
#ifndef PATH_MAX
@@ -63,7 +63,7 @@
wipe ("/system");
wipe ("/data");
fprintf(stdout, "Device nuked! Rebooting...\n");
- ret = reboot(RB_AUTOBOOT);
+ ret = android_reboot(ANDROID_RB_RESTART, 0, 0);
if (ret < 0) {
fprintf(stderr, "Reboot failed, %s\n", strerror(errno));
return 1;