ca8e66a8b0
Move the responsibility for rebooting the system from the reboot command to init. Init is in a better position to take actions to bring the system down cleanly, including making sure filesystems are mounted read-only. The only UIDs which can perform an init triggered reboot are root, system, and shell. Modify the reboot command so that it calls into init to perform the reboot. The reboot command no longer requires CAP_SYS_BOOT. Remove the -n reboot option and code which supports it. Anyone needing to do an unclean shutdown can just do a 'echo c > /proc/sysrq-trigger'. Modify adb so that it calls into init to perform a shutdown. Bug: 8646621 Change-Id: I84c0513acb549720cb0e8c9fcbda0050f5c396f5
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <cutils/properties.h>
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#include <cutils/android_reboot.h>
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#include <unistd.h>
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int main(int argc, char *argv[])
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{
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int ret;
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size_t prop_len;
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char property_val[PROPERTY_VALUE_MAX];
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const char *cmd = "reboot";
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char *optarg = "";
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opterr = 0;
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do {
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int c;
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c = getopt(argc, argv, "p");
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if (c == EOF) {
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break;
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}
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switch (c) {
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case 'p':
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cmd = "shutdown";
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break;
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case '?':
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fprintf(stderr, "usage: %s [-p] [rebootcommand]\n", argv[0]);
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exit(EXIT_FAILURE);
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}
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} while (1);
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if(argc > optind + 1) {
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fprintf(stderr, "%s: too many arguments\n", argv[0]);
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exit(EXIT_FAILURE);
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}
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if (argc > optind)
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optarg = argv[optind];
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prop_len = snprintf(property_val, sizeof(property_val), "%s,%s", cmd, optarg);
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if (prop_len >= sizeof(property_val)) {
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fprintf(stderr, "reboot command too long: %s\n", optarg);
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exit(EXIT_FAILURE);
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}
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ret = property_set(ANDROID_RB_PROPERTY, property_val);
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if(ret < 0) {
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perror("reboot");
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exit(EXIT_FAILURE);
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}
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fprintf(stderr, "Done\n");
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return 0;
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}
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