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https://github.com/moby/moby.git
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f30b072b81
Switches calls to syscall to x/sys, which is more up to date. This is fixes a number of possible bugs on other architectures where ioctl tcget and tcset aren't implemented correctly. There are a few remaining syscall references, because x/sys doesn't have an Errno implementation yet. Also removes a ppc64le and cgo build tag that fixes building on ppc64le without cgo Signed-off-by: Christopher Jones <tophj@linux.vnet.ibm.com>
65 lines
1.8 KiB
Go
65 lines
1.8 KiB
Go
// +build solaris,cgo
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package term
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import (
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"syscall"
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"unsafe"
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"golang.org/x/sys/unix"
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)
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// #include <termios.h>
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import "C"
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// Termios is the Unix API for terminal I/O.
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// It is passthrough for syscall.Termios in order to make it portable with
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// other platforms where it is not available or handled differently.
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type Termios unix.Termios
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// MakeRaw put the terminal connected to the given file descriptor into raw
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// mode and returns the previous state of the terminal so that it can be
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// restored.
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func MakeRaw(fd uintptr) (*State, error) {
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var oldState State
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if err := tcget(fd, &oldState.termios); err != 0 {
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return nil, err
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}
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newState := oldState.termios
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newState.Iflag &^= (syscall.IGNBRK | syscall.BRKINT | syscall.PARMRK | syscall.ISTRIP | syscall.INLCR | syscall.IGNCR | syscall.ICRNL | syscall.IXON | syscall.IXANY)
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newState.Oflag &^= syscall.OPOST
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newState.Lflag &^= (syscall.ECHO | syscall.ECHONL | syscall.ICANON | syscall.ISIG | syscall.IEXTEN)
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newState.Cflag &^= (syscall.CSIZE | syscall.PARENB)
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newState.Cflag |= syscall.CS8
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/*
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VMIN is the minimum number of characters that needs to be read in non-canonical mode for it to be returned
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Since VMIN is overloaded with another element in canonical mode when we switch modes it defaults to 4. It
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needs to be explicitly set to 1.
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*/
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newState.Cc[C.VMIN] = 1
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newState.Cc[C.VTIME] = 0
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if err := tcset(fd, &newState); err != 0 {
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return nil, err
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}
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return &oldState, nil
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}
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func tcget(fd uintptr, p *Termios) syscall.Errno {
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ret, err := C.tcgetattr(C.int(fd), (*C.struct_termios)(unsafe.Pointer(p)))
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if ret != 0 {
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return err.(syscall.Errno)
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}
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return 0
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}
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func tcset(fd uintptr, p *Termios) syscall.Errno {
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ret, err := C.tcsetattr(C.int(fd), C.TCSANOW, (*C.struct_termios)(unsafe.Pointer(p)))
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if ret != 0 {
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return err.(syscall.Errno)
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}
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return 0
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}
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