utimes_wasip1.mx raw

   1  // Copyright 2025 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 wasip1
   6  
   7  package unix
   8  
   9  import (
  10  	"syscall"
  11  	"unsafe"
  12  )
  13  
  14  //go:wasmimport wasi_snapshot_preview1 path_filestat_set_times
  15  //go:noescape
  16  func path_filestat_set_times(fd int32, flags uint32, path *byte, pathLen size, atim uint64, mtim uint64, fstflags uint32) syscall.Errno
  17  
  18  func Utimensat(dirfd int, path string, times *[2]syscall.Timespec, flag int) error {
  19  	if path == "" {
  20  		return syscall.EINVAL
  21  	}
  22  	atime := syscall.TimespecToNsec(times[0])
  23  	mtime := syscall.TimespecToNsec(times[1])
  24  
  25  	var fflag uint32
  26  	if times[0].Nsec != UTIME_OMIT {
  27  		fflag |= syscall.FILESTAT_SET_ATIM
  28  	}
  29  	if times[1].Nsec != UTIME_OMIT {
  30  		fflag |= syscall.FILESTAT_SET_MTIM
  31  	}
  32  	errno := path_filestat_set_times(
  33  		int32(dirfd),
  34  		syscall.LOOKUP_SYMLINK_FOLLOW,
  35  		unsafe.StringData(path),
  36  		size(len(path)),
  37  		uint64(atime),
  38  		uint64(mtime),
  39  		fflag,
  40  	)
  41  	return errnoErr(errno)
  42  }
  43