mirror of
https://github.com/openharmony/startup_init_lite.git
synced 2026-07-01 03:23:16 -04:00
zhong_ning
78 lines
2.5 KiB
C
Executable File
78 lines
2.5 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 "device.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sys/sysmacros.h>
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#include <linux/major.h>
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#include "init_log.h"
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#define DEFAULT_RW_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)
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#define DEFAULT_NO_AUTHORITY_MODE (S_IWUSR | S_IRUSR)
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#define STDERR_HANDLE 2
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void CloseStdio(void)
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{
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int fd = open("/dev/null", O_RDWR | O_CLOEXEC);
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if (fd < 0) {
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return;
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}
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dup2(fd, 0);
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dup2(fd, 1);
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dup2(fd, STDERR_HANDLE);
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close(fd);
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}
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void MountBasicFs(void)
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{
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if (mount("tmpfs", "/dev", "tmpfs", MS_NOSUID, "mode=0755") != 0) {
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INIT_LOGE("Mount tmpfs failed. %s", strerror(errno));
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}
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if (mkdir("/dev/pts", S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) != 0) {
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INIT_LOGE("mkdir /dev/pts failed. %s", strerror(errno));
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}
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if (mount("devpts", "/dev/pts", "devpts", 0, NULL) != 0) {
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INIT_LOGE("Mount devpts failed. %s", strerror(errno));
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}
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if (mount("proc", "/proc", "proc", 0, "hidepid=2") != 0) {
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INIT_LOGE("Mount procfs failed. %s", strerror(errno));
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}
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if (mount("sysfs", "/sys", "sysfs", 0, NULL) != 0) {
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INIT_LOGE("Mount sysfs failed. %s", strerror(errno));
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}
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if (mount("selinuxfs", "/sys/fs/selinux", "selinuxfs", 0, NULL) != 0) {
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INIT_LOGE("Mount selinuxfs failed. %s", strerror(errno));
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}
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}
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void CreateDeviceNode(void)
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{
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if (mknod("/dev/null", S_IFCHR | DEFAULT_RW_MODE, makedev(MEM_MAJOR, DEV_NULL_MINOR)) != 0) {
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INIT_LOGE("Create /dev/null device node failed. %s", strerror(errno));
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}
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if (mknod("/dev/random", S_IFCHR | DEFAULT_RW_MODE, makedev(MEM_MAJOR, DEV_RANDOM_MINOR)) != 0) {
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INIT_LOGE("Create /dev/random device node failed. %s", strerror(errno));
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}
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if (mknod("/dev/urandom", S_IFCHR | DEFAULT_RW_MODE, makedev(MEM_MAJOR, DEV_URANDOM_MINOR)) != 0) {
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INIT_LOGE("Create /dev/urandom device node failed. %s", strerror(errno));
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}
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}
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