at_freebsd.go

     1  // Copyright 2018 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 unix
     6  
     7  import (
     8  	"syscall"
     9  	"unsafe"
    10  )
    11  
    12  const (
    13  	AT_REMOVEDIR        = 0x800
    14  	AT_SYMLINK_NOFOLLOW = 0x200
    15  )
    16  
    17  func Unlinkat(dirfd int, path string, flags int) error {
    18  	p, err := syscall.BytePtrFromString(path)
    19  	if err != nil {
    20  		return err
    21  	}
    22  
    23  	_, _, errno := syscall.Syscall(syscall.SYS_UNLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(p)), uintptr(flags))
    24  	if errno != 0 {
    25  		return errno
    26  	}
    27  
    28  	return nil
    29  }
    30  
    31  func Openat(dirfd int, path string, flags int, perm uint32) (int, error) {
    32  	p, err := syscall.BytePtrFromString(path)
    33  	if err != nil {
    34  		return 0, err
    35  	}
    36  
    37  	fd, _, errno := syscall.Syscall6(syscall.SYS_OPENAT, uintptr(dirfd), uintptr(unsafe.Pointer(p)), uintptr(flags), uintptr(perm), 0, 0)
    38  	if errno != 0 {
    39  		return 0, errno
    40  	}
    41  
    42  	return int(fd), nil
    43  }
    44  
    45  func Fstatat(dirfd int, path string, stat *syscall.Stat_t, flags int) error {
    46  	return syscall.Fstatat(dirfd, path, stat, flags)
    47  }
    48
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