[BZ #394]

2005-09-23  Ulrich Drepper  <drepper@redhat.com>
	[BZ #394]
	* libio/fmemopen.c (fmemopen_write): Return 0 instead of -1 if
	nothing can be written.
	* libio/iofopncook.c (_IO_cookie_write): If something went wrong,
	set error bit.

3 files changed, 18 insertions, 3 deletions

diff --git a/ChangeLog b/ChangeLog
index 7eb5f79..01dd44d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2005-09-23  Ulrich Drepper  <drepper@redhat.com>
+
+	[BZ #394]
+	* libio/fmemopen.c (fmemopen_write): Return 0 instead of -1 if
+	nothing can be written.
+	* libio/iofopncook.c (_IO_cookie_write): If something went wrong,
+	set error bit.
+
 2005-09-22  Ulrich Drepper  <drepper@redhat.com>
 
 	[BZ #281]
diff --git a/libio/fmemopen.c b/libio/fmemopen.c
index 7c8769a..b847f62 100644
--- a/libio/fmemopen.c
+++ b/libio/fmemopen.c
@@ -127,7 +127,7 @@ fmemopen_write (void *cookie, const char *b, size_t s)
       if ((size_t) (c->pos + addnullc) == c->size)
 	{
 	  __set_errno (ENOSPC);
-	  return -1;
+	  return 0;
 	}
       s = c->size - c->pos - addnullc;
     }
diff --git a/libio/iofopncook.c b/libio/iofopncook.c
index 9c5503d..976ff50 100644
--- a/libio/iofopncook.c
+++ b/libio/iofopncook.c
@@ -64,9 +64,16 @@ _IO_cookie_write (fp, buf, size)
   struct _IO_cookie_file *cfile = (struct _IO_cookie_file *) fp;
 
   if (cfile->__io_functions.write == NULL)
-    return -1;
+    {
+      fp->_flags |= _IO_ERR_SEEN;
+      return 0;
+    }
+
+  _IO_ssize_t n = cfile->__io_functions.write (cfile->__cookie, buf, size);
+  if (n < size)
+    fp->_flags |= _IO_ERR_SEEN;
 
-  return cfile->__io_functions.write (cfile->__cookie, buf, size);
+  return n;
 }
 
 static _IO_off64_t