time_fake.mx raw

   1  // Copyright 2019 The Go Authors. All rights reserved.
   2  // Use of this source code is governed by a BSD-style
   3  // license that can be found in the LICENSE file.
   4  
   5  //go:build faketime
   6  
   7  package syscall
   8  
   9  import "unsafe"
  10  
  11  const faketime = true
  12  
  13  // When faketime is enabled, we redirect writes to FDs 1 and 2 through
  14  // the runtime's write function, since that adds the framing that
  15  // reports the emulated time.
  16  
  17  //go:linkname runtimeWrite runtime.write
  18  func runtimeWrite(fd uintptr, p unsafe.Pointer, n int32) int32
  19  
  20  func faketimeWrite(fd int, p []byte) int {
  21  	var pp *byte
  22  	if len(p) > 0 {
  23  		pp = &p[0]
  24  	}
  25  	return int(runtimeWrite(uintptr(fd), unsafe.Pointer(pp), int32(len(p))))
  26  }
  27