--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/lib/write-full.c	Mon Aug 26 02:46:59 2002 +0300
@@ -0,0 +1,49 @@
+/*
+ write-full.c - Simpler API to write to file
+
+    Copyright (c) 2002 Timo Sirainen
+
+    Permission is hereby granted, free of charge, to any person obtaining
+    a copy of this software and associated documentation files (the
+    "Software"), to deal in the Software without restriction, including
+    without limitation the rights to use, copy, modify, merge, publish,
+    distribute, sublicense, and/or sell copies of the Software, and to
+    permit persons to whom the Software is furnished to do so, subject to
+    the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+    IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+    CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+    TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+    SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include <errno.h>
+#include <limits.h>
+#include <unistd.h>
+
+int write_full(int fd, const void *data, size_t size)
+{
+	ssize_t ret;
+
+	do {
+		ret = write(fd, data, size < INT_MAX ? size : INT_MAX);
+		if (ret < 0)
+			return -1;
+
+		if (ret == 0) {
+			/* nothing was written, only reason for this should
+			   be out of disk space */
+			errno = ENOSPC;
+			return -1;
+		}
+		size -= ret;
+	} while (size > 0);
+
+	return 0;
+}