(output/write_some): Don't try and write more than IO_INBAND_MAX in a

single call to device_write_inband.

1 files changed, 21 insertions, 16 deletions

diff --git a/mach/devstream.c b/mach/devstream.c
index c35e548dd2..b54dcff60d 100644
--- a/mach/devstream.c
+++ b/mach/devstream.c
@@ -1,23 +1,22 @@
 /* stdio on a Mach device port.
    Translates \n to \r\n on output, echos and translates \r to \n on input.
+   Copyright (C) 1992, 1993, 1994, 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
 
-Copyright (C) 1992, 1993, 1994, 1996 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
 
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
 
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Library General Public License for more details.
-
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA.  */
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
 
 #include <stdio.h>
 #include <mach.h>
@@ -148,10 +147,16 @@ output (FILE *f, int c)
     {
       kern_return_t err;
       int wrote;
+      int thiswrite;
+
       while (to_write > 0)
 	{
+	  thiswrite = to_write;
+	  if (thiswrite > IO_INBAND_MAX)
+	    thiswrite = IO_INBAND_MAX;
+
 	  if (err = device_write_inband ((device_t) f->__cookie, 0,
-					 f->__target, p, to_write, &wrote))
+					 f->__target, p, thiswrite, &wrote))
 	    {
 	      errno = err;
 	      f->__error = 1;