github.com/neonyo/sys@v0.0.0-20230720094341-b1ee14be3ce8/unix/ioctl_signed.go (about)

     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  //go:build aix || solaris
     6  // +build aix solaris
     7  
     8  package unix
     9  
    10  import (
    11  	"unsafe"
    12  )
    13  
    14  // ioctl itself should not be exposed directly, but additional get/set
    15  // functions for specific types are permissible.
    16  
    17  // IoctlSetInt performs an ioctl operation which sets an integer value
    18  // on fd, using the specified request number.
    19  func IoctlSetInt(fd int, req int, value int) error {
    20  	return ioctl(fd, req, uintptr(value))
    21  }
    22  
    23  // IoctlSetPointerInt performs an ioctl operation which sets an
    24  // integer value on fd, using the specified request number. The ioctl
    25  // argument is called with a pointer to the integer value, rather than
    26  // passing the integer value directly.
    27  func IoctlSetPointerInt(fd int, req int, value int) error {
    28  	v := int32(value)
    29  	return ioctlPtr(fd, req, unsafe.Pointer(&v))
    30  }
    31  
    32  // IoctlSetWinsize performs an ioctl on fd with a *Winsize argument.
    33  //
    34  // To change fd's window size, the req argument should be TIOCSWINSZ.
    35  func IoctlSetWinsize(fd int, req int, value *Winsize) error {
    36  	// TODO: if we get the chance, remove the req parameter and
    37  	// hardcode TIOCSWINSZ.
    38  	return ioctlPtr(fd, req, unsafe.Pointer(value))
    39  }
    40  
    41  // IoctlSetTermios performs an ioctl on fd with a *Termios.
    42  //
    43  // The req value will usually be TCSETA or TIOCSETA.
    44  func IoctlSetTermios(fd int, req int, value *Termios) error {
    45  	// TODO: if we get the chance, remove the req parameter.
    46  	return ioctlPtr(fd, req, unsafe.Pointer(value))
    47  }
    48  
    49  // IoctlGetInt performs an ioctl operation which gets an integer value
    50  // from fd, using the specified request number.
    51  //
    52  // A few ioctl requests use the return value as an output parameter;
    53  // for those, IoctlRetInt should be used instead of this function.
    54  func IoctlGetInt(fd int, req int) (int, error) {
    55  	var value int
    56  	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
    57  	return value, err
    58  }
    59  
    60  func IoctlGetWinsize(fd int, req int) (*Winsize, error) {
    61  	var value Winsize
    62  	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
    63  	return &value, err
    64  }
    65  
    66  func IoctlGetTermios(fd int, req int) (*Termios, error) {
    67  	var value Termios
    68  	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
    69  	return &value, err
    70  }