at_openbsd.go

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