wehub-resource-sync
105 lines
3.0 KiB
C
105 lines
3.0 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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// The below fall into two main categories:
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// 1. Aren't exposed by Swifts glibc modulemap.
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// 2. Don't have syscall wrappers/definitions in glibc/musl.
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#ifndef __SYSCALL_H
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#define __SYSCALL_H
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#include <sys/types.h>
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#ifdef __linux__
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#include <sys/vfs.h>
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#endif
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// CLONE_* flags
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#ifndef CLONE_NEWNS
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#define CLONE_NEWNS 0x00020000
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#endif
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#ifndef CLONE_NEWCGROUP
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#define CLONE_NEWCGROUP 0x02000000
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#endif
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#ifndef CLONE_NEWUTS
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#define CLONE_NEWUTS 0x04000000
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#endif
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#ifndef CLONE_NEWIPC
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#define CLONE_NEWIPC 0x08000000
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#endif
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#ifndef CLONE_NEWUSER
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#define CLONE_NEWUSER 0x10000000
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#endif
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#ifndef CLONE_NEWPID
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#define CLONE_NEWPID 0x20000000
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#endif
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extern int setns(int fd, int nstype);
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extern int unshare(int flags);
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extern int dup3(int oldfd, int newfd, int flags);
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extern int execvpe(const char *file, char *const argv[], char *const envp[]);
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extern int unlockpt(int fd);
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extern char *ptsname(int fd);
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// splice(2) and flags.
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extern ssize_t splice(int fd_in, off_t *off_in, int fd_out, off_t *off_out,
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size_t len, unsigned int flags);
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#ifndef SPLICE_F_MOVE
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#define SPLICE_F_MOVE 1
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#endif
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#ifndef SPLICE_F_NONBLOCK
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#define SPLICE_F_NONBLOCK 2
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#endif
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// RLIMIT constants as plain integers. On glibc these are __rlimit_resource
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// enum values which can't be used as Int32 in Swift.
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#define CZ_RLIMIT_CPU 0
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#define CZ_RLIMIT_FSIZE 1
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#define CZ_RLIMIT_DATA 2
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#define CZ_RLIMIT_STACK 3
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#define CZ_RLIMIT_CORE 4
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#define CZ_RLIMIT_RSS 5
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#define CZ_RLIMIT_NPROC 6
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#define CZ_RLIMIT_NOFILE 7
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#define CZ_RLIMIT_MEMLOCK 8
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#define CZ_RLIMIT_AS 9
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#define CZ_RLIMIT_LOCKS 10
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#define CZ_RLIMIT_SIGPENDING 11
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#define CZ_RLIMIT_MSGQUEUE 12
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#define CZ_RLIMIT_NICE 13
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#define CZ_RLIMIT_RTPRIO 14
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#define CZ_RLIMIT_RTTIME 15
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// setrlimit wrapper that accepts plain int for the resource parameter,
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// avoiding glibc's __rlimit_resource enum type mismatch in Swift.
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int CZ_setrlimit(int resource, unsigned long long soft, unsigned long long hard);
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int CZ_pivot_root(const char *new_root, const char *put_old);
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int CZ_set_sub_reaper();
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#ifndef SYS_pidfd_open
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#define SYS_pidfd_open 434
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#endif
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int CZ_pidfd_open(pid_t pid, unsigned int flags);
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#ifndef SYS_pidfd_getfd
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#define SYS_pidfd_getfd 438
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#endif
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int CZ_pidfd_getfd(int pidfd, int targetfd, unsigned int flags);
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int CZ_prctl_set_no_new_privs();
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#endif
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