| #include <fcntl.h> |
| #include <pty.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| |
| /* Nonstandard, but vastly superior to the standard functions */ |
| |
| int openpty(int* pm, int* ps, char* name, const struct termios* tio, const struct winsize* ws) { |
| int m, s, n = 0; |
| char buf[20]; |
| |
| m = open("/dev/ptmx", O_RDWR | O_NOCTTY); |
| if (m < 0) |
| return -1; |
| |
| if (ioctl(m, TIOCSPTLCK, &n) || ioctl(m, TIOCGPTN, &n)) |
| goto fail; |
| |
| if (!name) |
| name = buf; |
| snprintf(name, sizeof buf, "/dev/pts/%d", n); |
| if ((s = open(name, O_RDWR | O_NOCTTY)) < 0) |
| goto fail; |
| |
| if (tio) |
| tcsetattr(s, TCSANOW, tio); |
| if (ws) |
| ioctl(s, TIOCSWINSZ, ws); |
| |
| *pm = m; |
| *ps = s; |
| |
| return 0; |
| fail: |
| close(m); |
| return -1; |
| } |