mirror of
https://github.com/openharmony/startup_init_lite.git
synced 2026-07-01 03:23:16 -04:00
zhong_ning
122 lines
3.2 KiB
C
Executable File
122 lines
3.2 KiB
C
Executable File
/*
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd.
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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 "init_adapter.h"
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#include <errno.h>
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#include <semaphore.h>
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#include <stdio.h>
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#include <sys/prctl.h>
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#include <sys/reboot.h>
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#include <unistd.h>
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#if defined OHOS_LITE && !defined __LINUX__
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#include <sys/capability.h>
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#else
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#include <linux/capability.h>
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#endif
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#if ((defined __LINUX__) || (!defined OHOS_LITE))
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#include <linux/securebits.h>
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#endif
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#include "init_log.h"
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void RebootSystem(void)
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{
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int ret = reboot(RB_AUTOBOOT);
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if (ret != 0) {
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INIT_LOGE("reboot failed! syscall ret %d, err %d.", ret, errno);
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}
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}
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int KeepCapability(void)
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{
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#if ((defined __LINUX__) || (!defined OHOS_LITE))
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if (prctl(PR_SET_SECUREBITS, SECBIT_NO_SETUID_FIXUP | SECBIT_NO_SETUID_FIXUP_LOCKED)) {
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INIT_LOGE("prctl PR_SET_SECUREBITS failed: %d", errno);
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return -1;
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}
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#endif
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return 0;
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}
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int SetAmbientCapability(int cap)
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{
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#if ((defined __LINUX__) || (!defined OHOS_LITE))
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if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, cap, 0, 0)) {
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INIT_LOGE("prctl PR_CAP_AMBIENT failed: %d", errno);
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return -1;
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}
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#endif
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return 0;
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}
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#ifdef __LINUX__
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static pid_t g_waitPid = -1;
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static sem_t *g_waitSem = NULL;
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static void SignalRegWaitSem(pid_t waitPid, sem_t *waitSem)
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{
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g_waitPid = waitPid;
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g_waitSem = waitSem;
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}
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void CheckWaitPid(pid_t sigPID)
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{
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if (g_waitPid == sigPID && g_waitSem != NULL) {
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if (sem_post(g_waitSem) != 0) {
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INIT_LOGE("CheckWaitPid, sem_post failed, errno %d.", errno);
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}
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g_waitPid = -1;
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g_waitSem = NULL;
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}
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}
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#else
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void CheckWaitPid(pid_t sigPID)
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{
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(void)(sigPID);
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}
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#endif
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void SystemExecuteRcs(void)
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{
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#if (defined __LINUX__) && (defined NEED_EXEC_RCS_LINUX)
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pid_t retPid = fork();
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if (retPid < 0) {
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INIT_LOGE("ExecuteRcs, fork failed! err %d.", errno);
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return;
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}
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// child process
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if (retPid == 0) {
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INIT_LOGI("ExecuteRcs, child process id %d.", getpid());
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if (execle("/bin/sh", "sh", "/etc/init.d/rcS", NULL, NULL) != 0) {
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INIT_LOGE("ExecuteRcs, execle failed! err %d.", errno);
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}
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_exit(0x7f); // 0x7f: user specified
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}
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// init process
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sem_t sem;
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if (sem_init(&sem, 0, 0) != 0) {
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INIT_LOGE("ExecuteRcs, sem_init failed, err %d.", errno);
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return;
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}
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SignalRegWaitSem(retPid, &sem);
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// wait until rcs process exited
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if (sem_wait(&sem) != 0) {
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INIT_LOGE("ExecuteRcs, sem_wait failed, err %d.", errno);
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}
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#endif
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}
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