X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Ffull-write.c;h=1feb2f7431145cb011b811db7a3ae8b25f4650f2;hb=daa689ebb8beb42e803445c882f20a175eb51b7f;hp=9f30b85a3619284297f4edfb4b9c4b41b2068249;hpb=c0ffdfa7ccba02e94b40a485b9bd411dd32c9ab8;p=gnulib.git

diff --git a/lib/full-write.c b/lib/full-write.c
index 9f30b85a3..1feb2f743 100644
--- a/lib/full-write.c
+++ b/lib/full-write.c
@@ -1,5 +1,5 @@
 /* full-write.c -- an interface to write that retries after interrupts
-   Copyright (C) 1993, 1994 Free Software Foundation, Inc.
+   Copyright (C) 1993, 1994, 1997, 1998, 2000 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -18,13 +18,13 @@
    Copied largely from GNU C's cccp.c.
    */
 
-#ifdef HAVE_CONFIG_H
+#if HAVE_CONFIG_H
 # include <config.h>
 #endif
 
 #include <sys/types.h>
 
-#ifdef HAVE_UNISTD_H
+#if HAVE_UNISTD_H
 # include <unistd.h>
 #endif
 
@@ -37,10 +37,7 @@ extern int errno;
    Return LEN upon success, write's (negative) error code otherwise.  */
 
 int
-full_write (desc, ptr, len)
-     int desc;
-     char *ptr;
-     size_t len;
+full_write (int desc, const char *ptr, size_t len)
 {
   int total_written;
 
@@ -48,6 +45,11 @@ full_write (desc, ptr, len)
   while (len > 0)
     {
       int written = write (desc, ptr, len);
+      /* write on an old Slackware Linux 1.2.13 returns zero when
+	 I try to write more data than there is room on a floppy disk.
+	 This puts dd into an infinite loop.  Reproduce with
+	 dd if=/dev/zero of=/dev/fd0.  If you have this problem,
+	 consider upgrading to a newer kernel.  */
       if (written < 0)
 	{
 #ifdef EINTR