From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- stdio/newstream.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 stdio/newstream.c (limited to 'stdio/newstream.c') diff --git a/stdio/newstream.c b/stdio/newstream.c new file mode 100644 index 0000000..08feb8d --- /dev/null +++ b/stdio/newstream.c @@ -0,0 +1,54 @@ +/* Copyright (C) 1991, 1992 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include +#include +#include +#include + + +/* Return a new, zeroed, stream. + You must set its cookie and io_mode. + The first operation will give it a buffer unless you do. + It will also give it the default functions unless you set the `seen' flag. + Returns NULL if a stream can't be created. */ +FILE * +DEFUN_VOID(__newstream) +{ + register FILE *stream; + + stream = __stdio_head; + while (__validfp (stream)) + stream = stream->__next; + if (stream == NULL) + { + /* None to reuse. */ + stream = (FILE *) malloc (sizeof (FILE)); + if (stream == NULL) + return NULL; + stream->__next = __stdio_head; + __stdio_head = stream; + } + + __invalidate (stream); + stream->__magic = _IOMAGIC; + stream->__offset = (fpos_t) -1; + stream->__target = (fpos_t) -1; + + return stream; +} -- cgit v1.1