diff options
Diffstat (limited to 'vendor/src/github.com/kr/pty/pty_freebsd.go')
-rw-r--r-- | vendor/src/github.com/kr/pty/pty_freebsd.go | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/vendor/src/github.com/kr/pty/pty_freebsd.go b/vendor/src/github.com/kr/pty/pty_freebsd.go new file mode 100644 index 0000000000..13b64d722e --- /dev/null +++ b/vendor/src/github.com/kr/pty/pty_freebsd.go @@ -0,0 +1,53 @@ +package pty + +import ( + "os" + "strconv" + "syscall" + "unsafe" +) + +const ( + sys_TIOCGPTN = 0x4004740F + sys_TIOCSPTLCK = 0x40045431 +) + +func open() (pty, tty *os.File, err error) { + p, err := os.OpenFile("/dev/ptmx", os.O_RDWR, 0) + if err != nil { + return nil, nil, err + } + + sname, err := ptsname(p) + if err != nil { + return nil, nil, err + } + + t, err := os.OpenFile(sname, os.O_RDWR|syscall.O_NOCTTY, 0) + if err != nil { + return nil, nil, err + } + return p, t, nil +} + +func ptsname(f *os.File) (string, error) { + var n int + err := ioctl(f.Fd(), sys_TIOCGPTN, &n) + if err != nil { + return "", err + } + return "/dev/pts/" + strconv.Itoa(n), nil +} + +func ioctl(fd uintptr, cmd uintptr, data *int) error { + _, _, e := syscall.Syscall( + syscall.SYS_IOCTL, + fd, + cmd, + uintptr(unsafe.Pointer(data)), + ) + if e != 0 { + return syscall.ENOTTY + } + return nil +} |