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chore: import upstream snapshot with attribution
2026-07-13 12:25:30 +08:00

53 lines
1.6 KiB
C

/*
* Copyright © 2025-2026 Apple Inc. and the Containerization project authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef __linux__
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/syscall.h>
#include <unistd.h>
#include "syscall.h"
int CZ_pivot_root(const char *new_root, const char *put_old) {
return syscall(SYS_pivot_root, new_root, put_old);
}
int CZ_set_sub_reaper() { return prctl(PR_SET_CHILD_SUBREAPER, 1); }
int CZ_pidfd_open(pid_t pid, unsigned int flags) {
// Musl doesn't have pidfd_open.
return syscall(SYS_pidfd_open, pid, flags);
}
int CZ_pidfd_getfd(int pidfd, int targetfd, unsigned int flags) {
// Musl doesn't have pidfd_getfd.
return syscall(SYS_pidfd_getfd, pidfd, targetfd, flags);
}
int CZ_prctl_set_no_new_privs() {
return prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0);
}
int CZ_setrlimit(int resource, unsigned long long soft,
unsigned long long hard) {
struct rlimit limit;
limit.rlim_cur = (rlim_t)soft;
limit.rlim_max = (rlim_t)hard;
return setrlimit(resource, &limit);
}
#endif