mirror of
https://gitee.com/openharmony/startup_init
synced 2024-11-23 16:20:00 +00:00
e05c314f05
1) remove sandbox from libbegetutil 2) remove cJSON depends Signed-off-by: handyohos <zhangxiaotian@huawei.com> Change-Id: I5957d85651c73d81d4a67e2cd90c9e744fc7aead #I5Y3PH
85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
/*
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* Copyright (c) 2022 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 <errno.h>
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#include <fcntl.h>
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#include <sched.h>
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#include <string.h>
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#include <unistd.h>
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#include "beget_ext.h"
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static int g_defaultNs;
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int GetNamespaceFd(const char *nsPath)
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{
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BEGET_CHECK(nsPath != NULL, return -1);
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int ns = open(nsPath, O_RDONLY | O_CLOEXEC);
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if (ns < 0) {
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BEGET_LOGE("Open default namespace failed, err=%d", errno);
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return -1;
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}
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return ns;
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}
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int UnshareNamespace(int nsType)
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{
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if (nsType == CLONE_NEWNS) {
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if (unshare(nsType) < 0) {
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BEGET_LOGE("Unshare namespace failed, err=%d", errno);
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return -1;
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} else {
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return 0;
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}
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} else {
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BEGET_LOGE("Namespace type is not support");
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return -1;
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}
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}
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int SetNamespace(int nsFd, int nsType)
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{
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if (nsFd < 0) {
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BEGET_LOGE("Namespace fd is invalid");
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return -1;
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}
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if (nsType != CLONE_NEWNS) {
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BEGET_LOGE("Namespace type is not support");
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return -1;
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}
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return setns(nsFd, nsType);
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}
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void InitDefaultNamespace(void)
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{
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BEGET_CHECK(!(g_defaultNs > 0), (void)close(g_defaultNs));
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g_defaultNs = GetNamespaceFd("/proc/self/ns/mnt");
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return;
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}
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int EnterDefaultNamespace(void)
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{
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BEGET_CHECK(!(g_defaultNs < 0), return -1);
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return SetNamespace(g_defaultNs, CLONE_NEWNS);
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}
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void CloseDefaultNamespace(void)
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{
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if (g_defaultNs > 0) {
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(void)close(g_defaultNs);
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g_defaultNs = -1;
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}
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return;
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}
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