e3aeeb4de3
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
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <cutils/android_reboot.h>
|
|
#include <unistd.h>
|
|
|
|
int reboot_main(int argc, char *argv[])
|
|
{
|
|
int ret;
|
|
int nosync = 0;
|
|
int poweroff = 0;
|
|
int flags = 0;
|
|
|
|
opterr = 0;
|
|
do {
|
|
int c;
|
|
|
|
c = getopt(argc, argv, "np");
|
|
|
|
if (c == EOF) {
|
|
break;
|
|
}
|
|
|
|
switch (c) {
|
|
case 'n':
|
|
nosync = 1;
|
|
break;
|
|
case 'p':
|
|
poweroff = 1;
|
|
break;
|
|
case '?':
|
|
fprintf(stderr, "usage: %s [-n] [-p] [rebootcommand]\n", argv[0]);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
} while (1);
|
|
|
|
if(argc > optind + 1) {
|
|
fprintf(stderr, "%s: too many arguments\n", argv[0]);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if(nosync)
|
|
/* also set NO_REMOUNT_RO as remount ro includes an implicit sync */
|
|
flags = ANDROID_RB_FLAG_NO_SYNC | ANDROID_RB_FLAG_NO_REMOUNT_RO;
|
|
|
|
if(poweroff)
|
|
ret = android_reboot(ANDROID_RB_POWEROFF, flags, 0);
|
|
else if(argc > optind)
|
|
ret = android_reboot(ANDROID_RB_RESTART2, flags, argv[optind]);
|
|
else
|
|
ret = android_reboot(ANDROID_RB_RESTART, flags, 0);
|
|
if(ret < 0) {
|
|
perror("reboot");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
fprintf(stderr, "reboot returned\n");
|
|
return 0;
|
|
}
|