1 /* Implementation details of FILE streams.
2 Copyright (C) 2007-2008 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Many stdio implementations have the same logic and therefore can share
18 the same implementation of stdio extension API, except that some fields
19 have different naming conventions, or their access requires some casts. */
22 /* BSD stdio derived implementations. */
24 #if defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
26 # if defined __DragonFly__ /* DragonFly */
27 /* See <http://www.dragonflybsd.org/cvsweb/src/lib/libc/stdio/priv_stdio.h?rev=HEAD&content-type=text/x-cvsweb-markup>. */
28 # define fp_ ((struct { struct __FILE_public pub; \
29 struct { unsigned char *_base; int _size; } _bf; \
35 struct { unsigned char *_base; int _size; } _ub; \
37 unsigned char _ubuf[3]; \
38 unsigned char _nbuf[1]; \
39 struct { unsigned char *_base; int _size; } _lb; \
42 /* More fields, not relevant here. */ \
44 /* See <http://www.dragonflybsd.org/cvsweb/src/include/stdio.h?rev=HEAD&content-type=text/x-cvsweb-markup>. */
46 # define _flags pub._flags
53 # if defined __NetBSD__ || defined __OpenBSD__ /* NetBSD, OpenBSD */
54 /* See <http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/stdio/fileext.h?rev=HEAD&content-type=text/x-cvsweb-markup>
55 and <http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdio/fileext.h?rev=HEAD&content-type=text/x-cvsweb-markup> */
58 struct __sbuf _ub; /* ungetc buffer */
59 /* More fields, not relevant here. */
61 # define fp_ub ((struct __sfileext *) fp->_ext._base)->_ub
62 # else /* FreeBSD, DragonFly, MacOS X, Cygwin */
63 # define fp_ub fp_->_ub
66 # define HASUB(fp) (fp_ub._base != NULL)
71 /* SystemV derived implementations. */
75 # if defined __sun && defined _LP64 /* Solaris/{SPARC,AMD64} 64-bit */
76 # define fp_ ((struct { unsigned char *_ptr; \
77 unsigned char *_base; \
78 unsigned char *_end; \
87 # if defined _SCO_DS /* OpenServer */