1 files changed, 99 insertions, 0 deletions
diff --git a/usr/src/lib/libbc/libc/sys/4.2/writev.c b/usr/src/lib/libbc/libc/sys/4.2/writev.c
new file mode 100644
index 0000000000..4bfbbe0d33
--- /dev/null
+++ b/usr/src/lib/libbc/libc/sys/4.2/writev.c
@@ -0,0 +1,99 @@
+/*
+ * 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 (c) 1999 by Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include "../common/compat.h"
+#include <stdio.h>
+#include <sys/errno.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/uio.h>
+
+/*
+ * If writing to a utmp-like file, map the utmp structure to
+ * new format on the fly.
+ */
+extern int errno;
+
+extern int conv2utmpx(char *, char *, int);
+
+int
+writev(int fd, struct iovec *iov, int iovcnt)
+{
+	return (bc_writev(fd, iov, iovcnt));
+}
+
+int
+bc_writev(int fd, struct iovec *iov, int iovcnt)
+{
+	int ret, off;
+	int nsize, total = 0;
+	char *nbuf;
+	int i;
+	
+	if (fd_get(fd) != -1) { /* writing utmp (utmpx, actually) */
+		for (i = 0; i < iovcnt; i++) {
+			nsize = getmodsize(iov[i].iov_len,
+			    sizeof (struct compat_utmp),
+			    sizeof (struct utmpx));
+
+			if ((nbuf = (void *)malloc(nsize)) == NULL) {
+				fprintf(stderr, "writev: malloc failed\n");
+				exit(-1);
+			}
+		
+			(void) memset(nbuf, 0, nsize);
+
+			ret = conv2utmpx(nbuf, iov[i].iov_base, iov[i].iov_len);
+
+			if ((ret = _write(fd, nbuf, ret)) == -1) {
+				if (errno == EAGAIN)
+					errno = EWOULDBLOCK;
+				free(nbuf);
+				return (-1);
+			}
+
+			total += ret;
+
+			free(nbuf);
+	
+			ret = getmodsize(ret, sizeof (struct utmpx), 
+			    sizeof (struct compat_utmp));
+
+		}
+		total = getmodsize(total, sizeof (struct utmpx), 
+		    sizeof (struct compat_utmp));
+		return (total);
+	}
+
+	if ((ret = _writev(fd, iov, iovcnt)) == -1) {
+		if (errno == EAGAIN)
+			errno = EWOULDBLOCK;
+	}
+	
+	return (ret);
+}