1 files changed, 113 insertions, 0 deletions
diff --git a/usr/src/lib/libc/port/stdio/setvbuf.c b/usr/src/lib/libc/port/stdio/setvbuf.c
new file mode 100644
index 0000000000..7a7b3957e2
--- /dev/null
+++ b/usr/src/lib/libc/port/stdio/setvbuf.c
@@ -0,0 +1,113 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*	Copyright (c) 1988 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+
+#include "synonyms.h"
+#include "file64.h"
+#include "mtlib.h"
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <thread.h>
+#include <synch.h>
+#include "stdiom.h"
+
+int
+setvbuf(FILE *iop, char *abuf, int type, size_t size)
+{
+
+	Uchar	*buf = (Uchar *)abuf;
+	Uchar *temp;
+	int	sflag = iop->_flag & _IOMYBUF;
+	rmutex_t *lk;
+
+	FLOCKFILE(lk, iop);
+	iop->_flag &= ~(_IOMYBUF | _IONBF | _IOLBF);
+	switch (type) {
+	/* note that the flags are the same as the possible values for type */
+	case _IONBF:
+		iop->_flag |= _IONBF;	 /* file is unbuffered */
+#ifndef _STDIO_ALLOCATE
+		if (iop->_file < 2) {
+			/* use special buffer for std{in,out} */
+			buf = (iop->_file == 0) ? _sibuf : _sobuf;
+			size = BUFSIZ;
+		} else /* needed for ifdef */
+#endif
+		if (iop->_file < _NFILE) {
+			buf = _smbuf[iop->_file];
+			size = _SMBFSZ - PUSHBACK;
+		} else
+			if ((buf = malloc(_SMBFSZ * sizeof (Uchar))) != NULL) {
+				iop->_flag |= _IOMYBUF;
+				size = _SMBFSZ - PUSHBACK;
+			} else {
+				FUNLOCKFILE(lk);
+				return (EOF);
+			}
+		break;
+	case _IOLBF:
+	case _IOFBF:
+		iop->_flag |= type;	/* buffer file */
+		/*
+		 * need at least an 8 character buffer for
+		 * out_of_sync concerns.
+		 */
+		if (size <= _SMBFSZ) {
+			size = BUFSIZ;
+			buf = NULL;
+		}
+		if (buf == NULL) {
+			if ((buf = malloc(sizeof (Uchar) *
+			    (size + _SMBFSZ))) != NULL)
+				iop->_flag |= _IOMYBUF;
+			else {
+				FUNLOCKFILE(lk);
+				return (EOF);
+			}
+		}
+		else
+			size -= _SMBFSZ;
+		break;
+	default:
+		FUNLOCKFILE(lk);
+		return (EOF);
+	}
+	if (iop->_base != NULL && sflag)
+		free((char *)iop->_base - PUSHBACK);
+	temp = buf + PUSHBACK;
+	iop->_base = temp;
+	_setbufend(iop, temp + size);
+	iop->_ptr = temp;
+	iop->_cnt = 0;
+	FUNLOCKFILE(lk);
+	return (0);
+}