diff options
Diffstat (limited to 'Utilities/cmlibuv/src/unix/tty.c')
| -rw-r--r-- | Utilities/cmlibuv/src/unix/tty.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/Utilities/cmlibuv/src/unix/tty.c b/Utilities/cmlibuv/src/unix/tty.c index ae1018f..fc8c3ab 100644 --- a/Utilities/cmlibuv/src/unix/tty.c +++ b/Utilities/cmlibuv/src/unix/tty.c @@ -48,6 +48,42 @@ static int uv__tty_is_slave(const int fd) { char dummy[256]; result = ioctl(fd, TIOCPTYGNAME, &dummy) != 0; +#elif defined(__NetBSD__) + /* + * NetBSD as an extension returns with ptsname(3) and ptsname_r(3) the slave + * device name for both descriptors, the master one and slave one. + * + * Implement function to compare major device number with pts devices. + * + * The major numbers are machine-dependent, on NetBSD/amd64 they are + * respectively: + * - master tty: ptc - major 6 + * - slave tty: pts - major 5 + */ + + struct stat sb; + /* Lookup device's major for the pts driver and cache it. */ + static devmajor_t pts = NODEVMAJOR; + + if (pts == NODEVMAJOR) { + pts = getdevmajor("pts", S_IFCHR); + if (pts == NODEVMAJOR) + abort(); + } + + /* Lookup stat structure behind the file descriptor. */ + if (fstat(fd, &sb) != 0) + abort(); + + /* Assert character device. */ + if (!S_ISCHR(sb.st_mode)) + abort(); + + /* Assert valid major. */ + if (major(sb.st_rdev) == NODEVMAJOR) + abort(); + + result = (pts == major(sb.st_rdev)); #else /* Fallback to ptsname */ |