OpenSolaris Launch

1 files changed, 87 insertions, 0 deletions

diff --git a/usr/src/lib/libc/port/stdio/setbuf.c b/usr/src/lib/libc/port/stdio/setbuf.c
new file mode 100644
index 0000000000..7c96d0feb7
--- /dev/null
+++ b/usr/src/lib/libc/port/stdio/setbuf.c
@@ -0,0 +1,87 @@
+/*
+ * 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"
+
+
+void
+setbuf(FILE *iop, char *abuf)
+{
+	Uchar *buf = (Uchar *)abuf;
+	int fno = iop->_file;  /* file number */
+	int size = BUFSIZ - _SMBFSZ;
+	Uchar *temp;
+	rmutex_t *lk;
+
+	FLOCKFILE(lk, iop);
+	if ((iop->_base != 0) && (iop->_flag & _IOMYBUF))
+		free((char *)iop->_base - PUSHBACK);
+	iop->_flag &= ~(_IOMYBUF | _IONBF | _IOLBF);
+	if (buf == 0) {
+		iop->_flag |= _IONBF;
+#ifndef _STDIO_ALLOCATE
+		if (fno < 2) {
+			/* use special buffer for std{in,out} */
+			buf = (fno == 0) ? _sibuf : _sobuf;
+		} else	/* needed for ifndef */
+#endif
+		if (fno < _NFILE) {
+			buf = _smbuf[fno];
+			size = _SMBFSZ - PUSHBACK;
+		} else
+		if ((buf = (Uchar *)malloc(_SMBFSZ * sizeof (Uchar))) != 0) {
+			iop->_flag |= _IOMYBUF;
+			size = _SMBFSZ - PUSHBACK;
+		}
+	} else {	/* regular buffered I/O, standard buffer size */
+		if (isatty(fno))
+			iop->_flag |= _IOLBF;
+	}
+	if (buf == 0) {
+		FUNLOCKFILE(lk);
+		return;		/* malloc() failed */
+	}
+	temp = buf + PUSHBACK;
+	iop->_base = temp;
+	_setbufend(iop, temp + size);
+	iop->_ptr = temp;
+	iop->_cnt = 0;
+	FUNLOCKFILE(lk);
+}