| // Copyright 2018 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| //go:build darwin || dragonfly || freebsd || hurd || linux || netbsd || openbsd |
| // +build darwin dragonfly freebsd hurd linux netbsd openbsd |
| |
| package unix |
| |
| import ( |
| "unsafe" |
| ) |
| |
| // ioctl itself should not be exposed directly, but additional get/set |
| // functions for specific types are permissible. |
| |
| // IoctlSetInt performs an ioctl operation which sets an integer value |
| // on fd, using the specified request number. |
| func IoctlSetInt(fd int, req uint, value int) error { |
| return ioctl(fd, req, uintptr(value)) |
| } |
| |
| // IoctlSetPointerInt performs an ioctl operation which sets an |
| // integer value on fd, using the specified request number. The ioctl |
| // argument is called with a pointer to the integer value, rather than |
| // passing the integer value directly. |
| func IoctlSetPointerInt(fd int, req uint, value int) error { |
| v := int32(value) |
| return ioctlPtr(fd, req, unsafe.Pointer(&v)) |
| } |
| |
| // IoctlSetWinsize performs an ioctl on fd with a *Winsize argument. |
| // |
| // To change fd's window size, the req argument should be TIOCSWINSZ. |
| func IoctlSetWinsize(fd int, req uint, value *Winsize) error { |
| // TODO: if we get the chance, remove the req parameter and |
| // hardcode TIOCSWINSZ. |
| return ioctlPtr(fd, req, unsafe.Pointer(value)) |
| } |
| |
| // IoctlSetTermios performs an ioctl on fd with a *Termios. |
| // |
| // The req value will usually be TCSETA or TIOCSETA. |
| func IoctlSetTermios(fd int, req uint, value *Termios) error { |
| // TODO: if we get the chance, remove the req parameter. |
| return ioctlPtr(fd, req, unsafe.Pointer(value)) |
| } |
| |
| // IoctlGetInt performs an ioctl operation which gets an integer value |
| // from fd, using the specified request number. |
| // |
| // A few ioctl requests use the return value as an output parameter; |
| // for those, IoctlRetInt should be used instead of this function. |
| func IoctlGetInt(fd int, req uint) (int, error) { |
| var value int |
| err := ioctlPtr(fd, req, unsafe.Pointer(&value)) |
| return value, err |
| } |
| |
| func IoctlGetWinsize(fd int, req uint) (*Winsize, error) { |
| var value Winsize |
| err := ioctlPtr(fd, req, unsafe.Pointer(&value)) |
| return &value, err |
| } |
| |
| func IoctlGetTermios(fd int, req uint) (*Termios, error) { |
| var value Termios |
| err := ioctlPtr(fd, req, unsafe.Pointer(&value)) |
| return &value, err |
| } |