--- trunk/mkinitrd-magellan/busybox/libbb/wfopen.c	2010/04/29 20:38:48	983
+++ trunk/mkinitrd-magellan/busybox/libbb/wfopen.c	2010/05/30 11:32:42	984
@@ -14,7 +14,7 @@
 	FILE *fp = fopen(path, mode);
 	if (!fp) {
 		bb_simple_perror_msg(path);
-		errno = 0;
+		//errno = 0; /* why? */
 	}
 	return fp;
 }
@@ -38,3 +38,19 @@
 {
 	return xfopen(path, "w");
 }
+
+static FILE* xfdopen_helper(unsigned fd_and_rw_bit)
+{
+	FILE* fp = fdopen(fd_and_rw_bit >> 1, fd_and_rw_bit & 1 ? "w" : "r");
+	if (!fp)
+		bb_error_msg_and_die(bb_msg_memory_exhausted);
+	return fp;
+}
+FILE* FAST_FUNC xfdopen_for_read(int fd)
+{
+	return xfdopen_helper(fd << 1);
+}
+FILE* FAST_FUNC xfdopen_for_write(int fd)
+{
+	return xfdopen_helper((fd << 1) + 1);
+}