github.com/SagerNet/gvisor@v0.0.0-20210707092255-7731c139d75c/pkg/sentry/platform/ptrace/subprocess_unsafe.go (about)

     1  // Copyright 2018 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  // +build go1.12
    16  // +build !go1.18
    17  
    18  // Check go:linkname function signatures when updating Go version.
    19  
    20  package ptrace
    21  
    22  import (
    23  	_ "unsafe" // required for go:linkname.
    24  )
    25  
    26  //go:linkname beforeFork syscall.runtime_BeforeFork
    27  func beforeFork()
    28  
    29  //go:linkname afterFork syscall.runtime_AfterFork
    30  func afterFork()
    31  
    32  //go:linkname afterForkInChild syscall.runtime_AfterForkInChild
    33  func afterForkInChild()