| 1 | #include <stdlib.h> |
| 2 | #include <sys/ioctl.h> |
| 3 | #include <stdio.h> |
| 4 | #include <fcntl.h> |
| 5 | #include <errno.h> |
| 6 | #include "syscall.h" |
| 7 | |
| 8 | int posix_openpt(int flags) |
| 9 | { |
| 10 | int r = open("/dev/ptmx", flags); |
| 11 | if (r < 0 && errno == ENOSPC) errno = EAGAIN; |
| 12 | return r; |
| 13 | } |
| 14 | |
| 15 | int grantpt(int fd) |
| 16 | { |
| 17 | return 0; |
| 18 | } |
| 19 | |
| 20 | int unlockpt(int fd) |
| 21 | { |
| 22 | int unlock = 0; |
| 23 | return ioctl(fd, TIOCSPTLCK, &unlock); |
| 24 | } |
| 25 | |
| 26 | int __ptsname_r(int fd, char *buf, size_t len) |
| 27 | { |
| 28 | int pty, err; |
| 29 | if (!buf) len = 0; |
| 30 | if ((err = __syscall(SYS_ioctl, fd, TIOCGPTN, &pty))) return -err; |
| 31 | if (snprintf(buf, len, "/dev/pts/%d", pty) >= len) return ERANGE; |
| 32 | return 0; |
| 33 | } |
| 34 | |
| 35 | weak_alias(__ptsname_r, ptsname_r); |