sys_windows.mx raw

   1  // Copyright 2011 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  package time
   6  
   7  import (
   8  	"errors"
   9  	"syscall"
  10  )
  11  
  12  // for testing: whatever interrupts a sleep
  13  func interrupt() {
  14  }
  15  
  16  func open(name []byte) (uintptr, error) {
  17  	fd, err := syscall.Open(name, syscall.O_RDONLY, 0)
  18  	if err != nil {
  19  		// This condition solves issue https://go.dev/issue/50248
  20  		if err == syscall.ERROR_PATH_NOT_FOUND {
  21  			err = syscall.ENOENT
  22  		}
  23  		return 0, err
  24  	}
  25  	return uintptr(fd), nil
  26  }
  27  
  28  func read(fd uintptr, buf []byte) (int, error) {
  29  	return syscall.Read(syscall.Handle(fd), buf)
  30  }
  31  
  32  func closefd(fd uintptr) {
  33  	syscall.Close(syscall.Handle(fd))
  34  }
  35  
  36  func preadn(fd uintptr, buf []byte, off int) error {
  37  	whence := seekStart
  38  	if off < 0 {
  39  		whence = seekEnd
  40  	}
  41  	if _, err := syscall.Seek(syscall.Handle(fd), int64(off), whence); err != nil {
  42  		return err
  43  	}
  44  	for len(buf) > 0 {
  45  		m, err := syscall.Read(syscall.Handle(fd), buf)
  46  		if m <= 0 {
  47  			if err == nil {
  48  				return errors.New("short read")
  49  			}
  50  			return err
  51  		}
  52  		buf = buf[m:]
  53  	}
  54  	return nil
  55  }
  56