X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Ffreading.h;h=a19aea60b6d523e7f0ec3f6f5dd50a77fccacdd3;hb=c5c66975f77962d53fee68bc2766cc59cabf95e1;hp=e0db1f7d055f61483ffb8b38cd17857aa33eca38;hpb=a8f956440539cf954fb92e2396cc58e2a111455f;p=gnulib.git

diff --git a/lib/freading.h b/lib/freading.h
index e0db1f7d0..a19aea60b 100644
--- a/lib/freading.h
+++ b/lib/freading.h
@@ -1,30 +1,39 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007-2011 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   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
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
 
    This program 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 General Public License for more details.
 
-   You should have received a copy of the GNU General Public License along
-   with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include <stdbool.h>
 #include <stdio.h>
 
-/* Return true if the stream STREAM is opened read-only, or if the last
-   operation on the stream was a read operation.  Return false if the stream
-   supports writing and the last operation on it was a write operation or
-   there was no such operation.
+/* Return true if the stream STREAM is opened read-only, or if the
+   last operation on the stream was a read operation.  Return false if
+   the stream is opened write-only or append-only, or if it supports
+   writing and there is no current read operation (such as fgetc).
+
+   freading and fwriting will never both be true.  If STREAM supports
+   both reads and writes, then:
+     - both freading and fwriting might be false when the stream is first
+       opened, after read encounters EOF, or after fflush,
+     - freading might be false or true and fwriting might be false
+       after repositioning (such as fseek, fsetpos, or rewind),
+   depending on the underlying implementation.
+
    STREAM must not be wide-character oriented.  */
 
-#if HAVE___FREADING && !defined __GLIBC__ /* Solaris >= 7, not glibc >= 2.2  */
+#if HAVE___FREADING && (!defined __GLIBC__ || defined __UCLIBC__ || __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
+/* Solaris >= 7, not glibc >= 2.2, but glibc >= 2.7  */
 
 # include <stdio_ext.h>
 # define freading(stream) (__freading (stream) != 0)