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Diffstat (limited to 'stdio/newstream.c')
-rw-r--r--stdio/newstream.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/stdio/newstream.c b/stdio/newstream.c
new file mode 100644
index 0000000000..08feb8da6e
--- /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 <ansidecl.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+
+/* 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;
+}