syscall_darwin.1_12.go

     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 darwin && go1.12 && !go1.13
     6  // +build darwin,go1.12,!go1.13
     7  
     8  package unix
     9  
    10  import (
    11  	"unsafe"
    12  )
    13  
    14  const _SYS_GETDIRENTRIES64 = 344
    15  
    16  func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
    17  	// To implement this using libSystem we'd need syscall_syscallPtr for
    18  	// fdopendir. However, syscallPtr was only added in Go 1.13, so we fall
    19  	// back to raw syscalls for this func on Go 1.12.
    20  	var p unsafe.Pointer
    21  	if len(buf) > 0 {
    22  		p = unsafe.Pointer(&buf[0])
    23  	} else {
    24  		p = unsafe.Pointer(&_zero)
    25  	}
    26  	r0, _, e1 := Syscall6(_SYS_GETDIRENTRIES64, uintptr(fd), uintptr(p), uintptr(len(buf)), uintptr(unsafe.Pointer(basep)), 0, 0)
    27  	n = int(r0)
    28  	if e1 != 0 {
    29  		return n, errnoErr(e1)
    30  	}
    31  	return n, nil
    32  }
    33
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