1 files changed, 89 insertions, 0 deletions
diff --git a/mit-pthreads/pthreads/writev.c b/mit-pthreads/pthreads/writev.c
new file mode 100644
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+++ b/mit-pthreads/pthreads/writev.c
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+/* ==== writev.c ============================================================
+ * Copyright (c) 1995 by Chris Provenzano, proven@mit.edu
+ * All rights reserved.
+ *
+ * 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 Chris Provenzano.
+ * 4. The name of Chris Provenzano may not be used to endorse or promote 
+ *	  products derived from this software without specific prior written
+ *	  permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``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 CHRIS PROVENZANO 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.
+ *
+ * Description : Implementation of writev().
+ *
+ *  1.00 95/06/19 proven
+ *      -Started coding this file.
+ */
+
+#ifndef lint
+static const char rcsid[] = "$Id$";
+#endif
+
+#include "config.h"
+
+#ifndef HAVE_SYSCALL_WRITEV
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/uio.h>
+#include <sys/types.h>
+
+/* ==========================================================================
+ * machdep_sys_writev()
+ *
+ * modified from the GNU C Library posix/writev.c
+ */
+int machdep_sys_writev(int fd, struct iovec * vector, int count)
+{
+	size_t bytes, i;
+	char *buffer;
+	int ret;
+
+	/* Find the total number of bytes to be written.  */
+	for (bytes = 0, i = 0; i < count; ++i)
+  		bytes += vector[i].iov_len;
+
+	if (bytes) {
+		/*
+		 * Allocate a temporary buffer to hold the data.
+		 * Don't use alloca because threads tend to have smaller stacks.
+		 */
+		if ((buffer = (char *)malloc(bytes)) == NULL) {
+			return(-ENOMEM);
+		}
+		/* Copy the data from memory specified by VECTOR to BUFFER */
+		for (ret = 0, i = 0; i < count; ++i) {
+       		memcpy(buffer + ret, vector[i].iov_base, vector[i].iov_len);
+			ret += vector[i].iov_len;
+    	}
+	} else {
+		buffer = NULL;
+	}
+
+	ret = (int)machdep_sys_write(fd, buffer, bytes);
+	if (buffer)
+		free(buffer);
+	return(ret);
+}
+
+#endif