| // +build !windows |
| |
| package pty |
| |
| import ( |
| "os" |
| "os/exec" |
| "syscall" |
| ) |
| |
| // Start assigns a pseudo-terminal tty os.File to c.Stdin, c.Stdout, |
| // and c.Stderr, calls c.Start, and returns the File of the tty's |
| // corresponding pty. |
| func Start(c *exec.Cmd) (pty *os.File, err error) { |
| return StartWithSize(c, nil) |
| } |
| |
| // StartWithSize assigns a pseudo-terminal tty os.File to c.Stdin, c.Stdout, |
| // and c.Stderr, calls c.Start, and returns the File of the tty's |
| // corresponding pty. |
| // |
| // This will resize the pty to the specified size before starting the command |
| func StartWithSize(c *exec.Cmd, sz *Winsize) (pty *os.File, err error) { |
| pty, tty, err := Open() |
| if err != nil { |
| return nil, err |
| } |
| defer tty.Close() |
| if sz != nil { |
| err = Setsize(pty, sz) |
| if err != nil { |
| pty.Close() |
| return nil, err |
| } |
| } |
| if c.Stdout == nil { |
| c.Stdout = tty |
| } |
| if c.Stderr == nil { |
| c.Stderr = tty |
| } |
| if c.Stdin == nil { |
| c.Stdin = tty |
| } |
| if c.SysProcAttr == nil { |
| c.SysProcAttr = &syscall.SysProcAttr{} |
| } |
| c.SysProcAttr.Setctty = true |
| c.SysProcAttr.Setsid = true |
| err = c.Start() |
| if err != nil { |
| pty.Close() |
| return nil, err |
| } |
| return pty, err |
| } |
