ioctl_signed.go (2508B)
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 7 package unix 8 9 import "unsafe" 10 11 // ioctl itself should not be exposed directly, but additional get/set 12 // functions for specific types are permissible. 13 14 // IoctlSetInt performs an ioctl operation which sets an integer value 15 // on fd, using the specified request number. 16 func IoctlSetInt(fd int, req int, value int) error { 17 return ioctl(fd, req, uintptr(value)) 18 } 19 20 // IoctlSetPointerInt performs an ioctl operation which sets an 21 // integer value on fd, using the specified request number. The ioctl 22 // argument is called with a pointer to the integer value, rather than 23 // passing the integer value directly. 24 func IoctlSetPointerInt(fd int, req int, value int) error { 25 v := int32(value) 26 return ioctlPtr(fd, req, unsafe.Pointer(&v)) 27 } 28 29 // IoctlSetString performs an ioctl operation which sets a string value 30 // on fd, using the specified request number. 31 func IoctlSetString(fd int, req int, value string) error { 32 bs := append([]byte(value), 0) 33 return ioctlPtr(fd, req, unsafe.Pointer(&bs[0])) 34 } 35 36 // IoctlSetWinsize performs an ioctl on fd with a *Winsize argument. 37 // 38 // To change fd's window size, the req argument should be TIOCSWINSZ. 39 func IoctlSetWinsize(fd int, req int, value *Winsize) error { 40 // TODO: if we get the chance, remove the req parameter and 41 // hardcode TIOCSWINSZ. 42 return ioctlPtr(fd, req, unsafe.Pointer(value)) 43 } 44 45 // IoctlSetTermios performs an ioctl on fd with a *Termios. 46 // 47 // The req value will usually be TCSETA or TIOCSETA. 48 func IoctlSetTermios(fd int, req int, value *Termios) error { 49 // TODO: if we get the chance, remove the req parameter. 50 return ioctlPtr(fd, req, unsafe.Pointer(value)) 51 } 52 53 // IoctlGetInt performs an ioctl operation which gets an integer value 54 // from fd, using the specified request number. 55 // 56 // A few ioctl requests use the return value as an output parameter; 57 // for those, IoctlRetInt should be used instead of this function. 58 func IoctlGetInt(fd int, req int) (int, error) { 59 var value int 60 err := ioctlPtr(fd, req, unsafe.Pointer(&value)) 61 return value, err 62 } 63 64 func IoctlGetWinsize(fd int, req int) (*Winsize, error) { 65 var value Winsize 66 err := ioctlPtr(fd, req, unsafe.Pointer(&value)) 67 return &value, err 68 } 69 70 func IoctlGetTermios(fd int, req int) (*Termios, error) { 71 var value Termios 72 err := ioctlPtr(fd, req, unsafe.Pointer(&value)) 73 return &value, err 74 }