BSD 4_3_Net_2 release

[unix-history] / usr / src / lib / libc / stdio / rewind.c

diff --git a/usr/src/lib/libc/stdio/rewind.c b/usr/src/lib/libc/stdio/rewind.c
index b02a6a7..ce9418e 100644 (file)
--- a/usr/src/lib/libc/stdio/rewind.c
+++ b/usr/src/lib/libc/stdio/rewind.c
@@ -1,17 +1,51 @@
-#ifndef lint
-static char sccsid[] = "@(#)rewind.c   5.1 (Berkeley) %G%";
-#endif not lint
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */

 
 

-#include       <stdio.h>
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rewind.c   5.6 (Berkeley) 1/20/91";
+#endif /* LIBC_SCCS and not lint */

 
 

-rewind(iop)
-register FILE *iop;
+#include <errno.h>
+#include <stdio.h>
+
+void
+rewind(fp)
+       register FILE *fp;

 {
 {

-       fflush(iop);
-       lseek(fileno(iop), 0L, 0);
-       iop->_cnt = 0;
-       iop->_ptr = iop->_base;
-       iop->_flag &= ~(_IOERR|_IOEOF);
-       if (iop->_flag & _IORW)
-               iop->_flag &= ~(_IOREAD|_IOWRT);
+       (void) fseek(fp, 0L, SEEK_SET);
+       clearerr(fp);
+       errno = 0;      /* not required, but seems reasonable */

 }
 }