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53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/*
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* Copyright © 2025-2026 Apple Inc. and the Containerization project authors.
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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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* https://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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#ifdef __linux__
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#include <sys/prctl.h>
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#include <sys/resource.h>
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#include <sys/syscall.h>
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#include <unistd.h>
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#include "syscall.h"
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int CZ_pivot_root(const char *new_root, const char *put_old) {
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return syscall(SYS_pivot_root, new_root, put_old);
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}
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int CZ_set_sub_reaper() { return prctl(PR_SET_CHILD_SUBREAPER, 1); }
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int CZ_pidfd_open(pid_t pid, unsigned int flags) {
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// Musl doesn't have pidfd_open.
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return syscall(SYS_pidfd_open, pid, flags);
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}
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int CZ_pidfd_getfd(int pidfd, int targetfd, unsigned int flags) {
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// Musl doesn't have pidfd_getfd.
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return syscall(SYS_pidfd_getfd, pidfd, targetfd, flags);
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}
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int CZ_prctl_set_no_new_privs() {
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return prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0);
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}
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int CZ_setrlimit(int resource, unsigned long long soft,
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unsigned long long hard) {
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struct rlimit limit;
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limit.rlim_cur = (rlim_t)soft;
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limit.rlim_max = (rlim_t)hard;
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return setrlimit(resource, &limit);
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}
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#endif
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