--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/osdep/unix/write.c	Mon Sep 14 15:17:45 2009 +0900
@@ -0,0 +1,59 @@
+/* ========================================================================
+ * Copyright 1988-2006 University of Washington
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * 
+ * ========================================================================
+ */
+
+/*
+ * Program:	Write data, treating partial writes as an error
+ *
+ * Author:	Mark Crispin
+ *		Networks and Distributed Computing
+ *		Computing & Communications
+ *		University of Washington
+ *		Administration Building, AG-44
+ *		Seattle, WA  98195
+ *		Internet: MRC@CAC.Washington.EDU
+ *
+ * Date:	26 May 1995
+ * Last Edited:	30 August 2006
+ */
+
+/*  The whole purpose of this unfortunate routine is to deal with DOS and
+ * certain cretinous versions of UNIX which decided that the "bytes actually
+ * written" return value from write() gave them license to use that for things
+ * that are really errors, such as disk quota exceeded, maximum file size
+ * exceeded, disk full, etc.
+ * 
+ *  BSD won't screw us this way on the local filesystem, but who knows what
+ * some NFS-mounted filesystem will do.
+ */
+
+#undef write
+
+/* Write data to file
+ * Accepts: file descriptor
+ *	    I/O vector structure
+ *	    number of vectors in structure
+ * Returns: number of bytes written if successful, -1 if failure
+ */
+
+long maxposint = (long)((((unsigned long) 1) << ((sizeof(int) * 8) - 1)) - 1);
+
+long safe_write (int fd,char *buf,long nbytes)
+{
+  long i,j;
+  if (nbytes > 0) for (i = nbytes; i; i -= j,buf += j) {
+    while (((j = write (fd,buf,(int) min (maxposint,i))) < 0) &&
+	   (errno == EINTR));
+    if (j < 0) return j;
+  }
+  return nbytes;
+}