diff options
Diffstat (limited to 'sysdeps/unix/bsd/getpt.c')
-rw-r--r-- | sysdeps/unix/bsd/getpt.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/sysdeps/unix/bsd/getpt.c b/sysdeps/unix/bsd/getpt.c new file mode 100644 index 0000000000..cb47692fdd --- /dev/null +++ b/sysdeps/unix/bsd/getpt.c @@ -0,0 +1,60 @@ +/* Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <sys/types.h> +#include <fcntl.h> +#include <errno.h> +#include <stdlib.h> + +#include "pty-internal.h" + +/* Per the FreeBSD-3.0 manpages: pty masters are named + /dev/pty[p-sP-S][0-9a-v]. I hope EIO is the right + errno in the "already open" case; it doesn't say. */ +static const char pn1[] = "pqrsPQRS"; +static const char pn2[] = "0123456789abcdefghijklmnopqrstuv"; + +/* Open the master side of a pseudoterminal and return its file + descriptor, or -1 on error. BSD version. */ +int +__getpt () +{ + int fd; + const char *i, *j; + char namebuf[PTYNAMELEN]; + + strcpy (namebuf, "/dev/pty"); + namebuf[10] = '\0'; + for (i = pn1; *i; ++i) + { + namebuf[8] = *i; + for (j = pn2; *j; ++j) + { + namebuf[9] = *j; + fd = open (namebuf, O_RDWR); + if (fd != -1) + return fd; + if (errno != EIO) + return -1; + } + } + __set_errno (ENFILE); + return -1; +} +weak_alias (getpt, __getpt) |