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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>
70 lines
1.6 KiB
Go
70 lines
1.6 KiB
Go
package term
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import (
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"unsafe"
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"golang.org/x/sys/unix"
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)
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const (
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getTermios = unix.TIOCGETA
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setTermios = unix.TIOCSETA
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)
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// Termios magic numbers, passthrough to the ones defined in unix.
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const (
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IGNBRK = unix.IGNBRK
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PARMRK = unix.PARMRK
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INLCR = unix.INLCR
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IGNCR = unix.IGNCR
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ECHONL = unix.ECHONL
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CSIZE = unix.CSIZE
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ICRNL = unix.ICRNL
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ISTRIP = unix.ISTRIP
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PARENB = unix.PARENB
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ECHO = unix.ECHO
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ICANON = unix.ICANON
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ISIG = unix.ISIG
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IXON = unix.IXON
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BRKINT = unix.BRKINT
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INPCK = unix.INPCK
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OPOST = unix.OPOST
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CS8 = unix.CS8
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IEXTEN = unix.IEXTEN
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)
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// Termios is the Unix API for terminal I/O.
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type Termios struct {
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Iflag uint32
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Oflag uint32
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Cflag uint32
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Lflag uint32
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Cc [20]byte
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Ispeed uint32
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Ospeed uint32
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}
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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 := unix.Syscall(unix.SYS_IOCTL, fd, uintptr(getTermios), uintptr(unsafe.Pointer(&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 &^= (IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON)
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newState.Oflag &^= OPOST
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newState.Lflag &^= (ECHO | ECHONL | ICANON | ISIG | IEXTEN)
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newState.Cflag &^= (CSIZE | PARENB)
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newState.Cflag |= CS8
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newState.Cc[unix.VMIN] = 1
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newState.Cc[unix.VTIME] = 0
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if _, _, err := unix.Syscall(unix.SYS_IOCTL, fd, uintptr(setTermios), uintptr(unsafe.Pointer(&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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