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@@ -0,0 +1,76 @@
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+package pty
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+
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+import (
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+ "errors"
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+ "os"
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+ "strings"
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+ "syscall"
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+ "unsafe"
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+)
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+
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+// same code as pty_darwin.go
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+func open() (pty, tty *os.File, err error) {
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+ p, err := os.OpenFile("/dev/ptmx", os.O_RDWR, 0)
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+ if err != nil {
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+ return nil, nil, err
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+ }
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+
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+ sname, err := ptsname(p)
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+ if err != nil {
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+ return nil, nil, err
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+ }
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+
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+ err = grantpt(p)
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+ if err != nil {
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+ return nil, nil, err
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+ }
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+
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+ err = unlockpt(p)
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+ if err != nil {
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+ return nil, nil, err
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+ }
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+
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+ t, err := os.OpenFile(sname, os.O_RDWR, 0)
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+ if err != nil {
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+ return nil, nil, err
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+ }
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+ return p, t, nil
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+}
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+
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+func grantpt(f *os.File) error {
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+ _, err := isptmaster(f.Fd())
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+ return err
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+}
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+
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+func unlockpt(f *os.File) error {
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+ _, err := isptmaster(f.Fd())
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+ return err
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+}
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+
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+func isptmaster(fd uintptr) (bool, error) {
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+ err := ioctl(fd, syscall.TIOCISPTMASTER, 0)
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+ return err == nil, err
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+}
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+
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+var (
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+ emptyFiodgnameArg fiodgnameArg
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+ ioctl_FIODNAME = _IOW('f', 120, unsafe.Sizeof(emptyFiodgnameArg))
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+)
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+
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+func ptsname(f *os.File) (string, error) {
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+ name := make([]byte, _C_SPECNAMELEN)
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+ fa := fiodgnameArg{Name: (*byte)(unsafe.Pointer(&name[0])), Len: _C_SPECNAMELEN, Pad_cgo_0: [4]byte{0, 0, 0, 0}}
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+
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+ err := ioctl(f.Fd(), ioctl_FIODNAME, uintptr(unsafe.Pointer(&fa)))
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+ if err != nil {
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+ return "", err
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+ }
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+
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+ for i, c := range name {
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+ if c == 0 {
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+ s := "/dev/" + string(name[:i])
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+ return strings.Replace(s, "ptm", "pts", -1), nil
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+ }
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+ }
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+ return "", errors.New("TIOCPTYGNAME string not NUL-terminated")
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+}
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