readv update for POSIX.1-2001

[Andreas Schwab]

Thorsten Kukuk <kukuk@suse.de> writes:

|> On Thu, Jan 31, Ulrich Drepper wrote:
|> 
|> > Andreas Schwab <schwab@suse.de> writes:
|> > 
|> > > POSIX.1-2001 requires that readv fails with EINVAL if the total buffer
|> > > length overflows the range of ssize_t.
|> > 
|> > Thanks.  I've also made the code a bit more robust.
|> 
|> The same is necessary for writev, too. I append a patch for it.
|> 
|>   Thorsten

Here is an additional patch to make them 64bit clean.

2002-02-03  Andreas Schwab  <schwab@suse.de>

	* sysdeps/posix/readv.c: Use ssize_t for bytes_read.

	* sysdeps/posix/writev.c: Use ssize_t for bytes_written.  Fix
	comment.

Index: sysdeps/posix/readv.c
===================================================================
RCS file: /cvs/glibc/libc/sysdeps/posix/readv.c,v
retrieving revision 1.9
diff -u -a -u -r1.9 sysdeps/posix/readv.c
--- sysdeps/posix/readv.c	2002/01/31 19:24:14	1.9
+++ sysdeps/posix/readv.c	2002/02/03 18:36:25
@@ -38,7 +38,7 @@
   char *buffer;
   char *buffer_start;
   size_t bytes;
-  int bytes_read;
+  ssize_t bytes_read;
   int i;
   bool use_malloc = false;
 
--- sysdeps/posix/writev.c
+++ sysdeps/posix/writev.c
@@ -38,7 +38,7 @@
   char *buffer;
   register char *bp;
   size_t bytes, to_copy;
-  int bytes_written;
+  ssize_t bytes_written;
   int i;
   bool use_malloc = false;
 
@@ -65,7 +65,7 @@
     {
       buffer = (char *) malloc (bytes);
       if (buffer == NULL)
-	/* XXX I don't know whether it is acceptable to try reading
+	/* XXX I don't know whether it is acceptable to try writing
 	   the data in chunks.  Probably not so we just fail here.  */
 	return -1;
 

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE GmbH, Deutschherrnstr. 15-19, D-90429 Nürnberg
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