.

[gnulib.git] / lib / full-write.c

diff --git a/lib/full-write.c b/lib/full-write.c
index 46d030b..1feb2f7 100644 (file)
--- 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
@@ -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