diff options
Diffstat (limited to 'lib/posix_openpt.c')
| -rw-r--r-- | lib/posix_openpt.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/lib/posix_openpt.c b/lib/posix_openpt.c index 19cd0b6c21..d2e585a68f 100644 --- a/lib/posix_openpt.c +++ b/lib/posix_openpt.c @@ -19,8 +19,12 @@ /* Specification. */ #include <stdlib.h> -#include <fcntl.h> #include <errno.h> +#include <fcntl.h> +#if defined __OpenBSD__ +# include <sys/ioctl.h> +# include <sys/tty.h> +#endif int posix_openpt (int flags) @@ -37,7 +41,34 @@ posix_openpt (int flags) master = -1; errno = ENOSYS; -#else /* MacOS, OpenBSD, HP-UX, IRIX, Solaris 9, Cygwin 1.5 */ +#elif defined __OpenBSD__ + + /* On OpenBSD, master and slave of a pseudo-terminal are allocated together, + by opening /dev/ptm and applying the PTMGET ioctl to it. */ + int fd; + struct ptmget data; + + fd = open (PATH_PTMDEV, O_RDWR); + if (fd >= 0) + { + if (ioctl (fd, PTMGET, &data) >= 0) + { + master = data.cfd; + close (data.sfd); + close (fd); + } + else + { + int saved_errno = errno; + close (fd); + errno = saved_errno; + master = -1; + } + } + else + master = -1; + +#else /* MacOS X, Minix, HP-UX, IRIX, OSF/1, Solaris 9, Cygwin 1.5 */ /* Most systems that lack posix_openpt() have /dev/ptmx. */ master = open ("/dev/ptmx", flags); |