at_openbsd.mx raw

   1  // Copyright 2024 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 openbsd && !mips64
   6  
   7  package unix
   8  
   9  import (
  10  	"internal/abi"
  11  	"syscall"
  12  	"unsafe"
  13  )
  14  
  15  //go:cgo_import_dynamic libc_readlinkat readlinkat "libc.so"
  16  
  17  func libc_readlinkat_trampoline()
  18  
  19  func Readlinkat(dirfd int, path string, buf []byte) (int, error) {
  20  	p0, err := syscall.BytePtrFromString(path)
  21  	if err != nil {
  22  		return 0, err
  23  	}
  24  	var p1 unsafe.Pointer
  25  	if len(buf) > 0 {
  26  		p1 = unsafe.Pointer(&buf[0])
  27  	} else {
  28  		p1 = unsafe.Pointer(&_zero)
  29  	}
  30  	n, _, errno := syscall_syscall6(abi.FuncPCABI0(libc_readlinkat_trampoline), uintptr(dirfd), uintptr(unsafe.Pointer(p0)), uintptr(p1), uintptr(len(buf)), 0, 0)
  31  	if errno != 0 {
  32  		return 0, errno
  33  	}
  34  	return int(n), nil
  35  }
  36  
  37  //go:cgo_import_dynamic libc_mkdirat mkdirat "libc.so"
  38  
  39  func libc_mkdirat_trampoline()
  40  
  41  func Mkdirat(dirfd int, path string, mode uint32) error {
  42  	p, err := syscall.BytePtrFromString(path)
  43  	if err != nil {
  44  		return err
  45  	}
  46  	_, _, errno := syscall_syscall6(abi.FuncPCABI0(libc_mkdirat_trampoline), uintptr(dirfd), uintptr(unsafe.Pointer(p)), uintptr(mode), 0, 0, 0)
  47  	if errno != 0 {
  48  		return errno
  49  	}
  50  	return nil
  51  }
  52  
  53  //go:cgo_import_dynamic libc_fchmodat fchmodat "libc.so"
  54  
  55  func libc_fchmodat_trampoline()
  56  
  57  func Fchmodat(dirfd int, path string, mode uint32, flags int) error {
  58  	p, err := syscall.BytePtrFromString(path)
  59  	if err != nil {
  60  		return err
  61  	}
  62  	_, _, errno := syscall_syscall6(abi.FuncPCABI0(libc_fchmodat_trampoline),
  63  		uintptr(dirfd),
  64  		uintptr(unsafe.Pointer(p)),
  65  		uintptr(mode),
  66  		uintptr(flags),
  67  		0,
  68  		0)
  69  	if errno != 0 {
  70  		return errno
  71  	}
  72  	return nil
  73  }
  74  
  75  //go:cgo_import_dynamic libc_fchownat fchownat "libc.so"
  76  
  77  func libc_fchownat_trampoline()
  78  
  79  func Fchownat(dirfd int, path string, uid, gid int, flags int) error {
  80  	p, err := syscall.BytePtrFromString(path)
  81  	if err != nil {
  82  		return err
  83  	}
  84  	_, _, errno := syscall_syscall6(abi.FuncPCABI0(libc_fchownat_trampoline),
  85  		uintptr(dirfd),
  86  		uintptr(unsafe.Pointer(p)),
  87  		uintptr(uid),
  88  		uintptr(gid),
  89  		uintptr(flags),
  90  		0)
  91  	if errno != 0 {
  92  		return errno
  93  	}
  94  	return nil
  95  }
  96  
  97  //go:cgo_import_dynamic libc_renameat renameat "libc.so"
  98  
  99  func libc_renameat_trampoline()
 100  
 101  func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) error {
 102  	oldp, err := syscall.BytePtrFromString(oldpath)
 103  	if err != nil {
 104  		return err
 105  	}
 106  	newp, err := syscall.BytePtrFromString(newpath)
 107  	if err != nil {
 108  		return err
 109  	}
 110  	_, _, errno := syscall_syscall6(abi.FuncPCABI0(libc_renameat_trampoline),
 111  		uintptr(olddirfd),
 112  		uintptr(unsafe.Pointer(oldp)),
 113  		uintptr(newdirfd),
 114  		uintptr(unsafe.Pointer(newp)),
 115  		0,
 116  		0)
 117  	if errno != 0 {
 118  		return errno
 119  	}
 120  	return nil
 121  }
 122  
 123  func libc_linkat_trampoline()
 124  
 125  //go:cgo_import_dynamic libc_linkat linkat "libc.so"
 126  
 127  func Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flag int) error {
 128  	oldp, err := syscall.BytePtrFromString(oldpath)
 129  	if err != nil {
 130  		return err
 131  	}
 132  	newp, err := syscall.BytePtrFromString(newpath)
 133  	if err != nil {
 134  		return err
 135  	}
 136  	_, _, errno := syscall_syscall6(abi.FuncPCABI0(libc_linkat_trampoline),
 137  		uintptr(olddirfd),
 138  		uintptr(unsafe.Pointer(oldp)),
 139  		uintptr(newdirfd),
 140  		uintptr(unsafe.Pointer(newp)),
 141  		uintptr(flag),
 142  		0)
 143  	if errno != 0 {
 144  		return errno
 145  	}
 146  	return nil
 147  }
 148  
 149  func libc_symlinkat_trampoline()
 150  
 151  //go:cgo_import_dynamic libc_symlinkat symlinkat "libc.so"
 152  
 153  func Symlinkat(oldpath string, newdirfd int, newpath string) error {
 154  	oldp, err := syscall.BytePtrFromString(oldpath)
 155  	if err != nil {
 156  		return err
 157  	}
 158  	newp, err := syscall.BytePtrFromString(newpath)
 159  	if err != nil {
 160  		return err
 161  	}
 162  	_, _, errno := syscall_syscall6(abi.FuncPCABI0(libc_symlinkat_trampoline),
 163  		uintptr(unsafe.Pointer(oldp)),
 164  		uintptr(newdirfd),
 165  		uintptr(unsafe.Pointer(newp)),
 166  		0,
 167  		0,
 168  		0)
 169  	if errno != 0 {
 170  		return errno
 171  	}
 172  	return nil
 173  }
 174