...
Run Format

Source file src/os/executable_freebsd.go

Documentation: os

  // Copyright 2016 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  package os
  
  import (
  	"syscall"
  	"unsafe"
  )
  
  func executable() (string, error) {
  	mib := [4]int32{1 /* CTL_KERN */, 14 /* KERN_PROC */, 12 /* KERN_PROC_PATHNAME */, -1}
  
  	n := uintptr(0)
  	// get length
  	_, _, err := syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&mib[0])), 4, 0, uintptr(unsafe.Pointer(&n)), 0, 0)
  	if err != 0 {
  		return "", err
  	}
  	if n == 0 { // shouldn't happen
  		return "", nil
  	}
  	buf := make([]byte, n)
  	_, _, err = syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&mib[0])), 4, uintptr(unsafe.Pointer(&buf[0])), uintptr(unsafe.Pointer(&n)), 0, 0)
  	if err != 0 {
  		return "", err
  	}
  	if n == 0 { // shouldn't happen
  		return "", nil
  	}
  	return string(buf[:n-1]), nil
  }
  

View as plain text