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4711bccd05
This fixes a race condition in runc/systemd at container creation time opencontainers/runc#1683 Signed-off-by: vikaschoudhary16 <vichoudh@redhat.com>
76 lines
1.6 KiB
Go
76 lines
1.6 KiB
Go
// +build darwin freebsd linux solaris
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package console
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import (
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"golang.org/x/sys/unix"
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)
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func tcget(fd uintptr, p *unix.Termios) error {
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termios, err := unix.IoctlGetTermios(int(fd), cmdTcGet)
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if err != nil {
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return err
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}
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*p = *termios
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return nil
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}
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func tcset(fd uintptr, p *unix.Termios) error {
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return unix.IoctlSetTermios(int(fd), cmdTcSet, p)
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}
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func tcgwinsz(fd uintptr) (WinSize, error) {
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var ws WinSize
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uws, err := unix.IoctlGetWinsize(int(fd), unix.TIOCGWINSZ)
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if err != nil {
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return ws, err
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}
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// Translate from unix.Winsize to console.WinSize
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ws.Height = uws.Row
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ws.Width = uws.Col
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ws.x = uws.Xpixel
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ws.y = uws.Ypixel
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return ws, nil
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}
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func tcswinsz(fd uintptr, ws WinSize) error {
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// Translate from console.WinSize to unix.Winsize
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var uws unix.Winsize
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uws.Row = ws.Height
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uws.Col = ws.Width
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uws.Xpixel = ws.x
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uws.Ypixel = ws.y
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return unix.IoctlSetWinsize(int(fd), unix.TIOCSWINSZ, &uws)
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}
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func setONLCR(fd uintptr, enable bool) error {
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var termios unix.Termios
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if err := tcget(fd, &termios); err != nil {
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return err
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}
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if enable {
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// Set +onlcr so we can act like a real terminal
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termios.Oflag |= unix.ONLCR
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} else {
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// Set -onlcr so we don't have to deal with \r.
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termios.Oflag &^= unix.ONLCR
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}
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return tcset(fd, &termios)
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}
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func cfmakeraw(t unix.Termios) unix.Termios {
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t.Iflag &^= (unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON)
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t.Oflag &^= unix.OPOST
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t.Lflag &^= (unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN)
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t.Cflag &^= (unix.CSIZE | unix.PARENB)
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t.Cflag &^= unix.CS8
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t.Cc[unix.VMIN] = 1
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t.Cc[unix.VTIME] = 0
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return t
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}
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