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annotate lib/stdio-impl.h @ 12559:c2cbabec01dd

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update nearly all FSF copyright year lists to include 2010 Use the same procedure as for 2009, outlined in http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/20081
author Jim Meyering <meyering@redhat.com>
date Fri, 01 Jan 2010 10:31:12 +0100
parents b5e42ef33b49
children 1adfe934d629
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1 /* Implementation details of FILE streams.
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2 Copyright (C) 2007-2010 Free Software Foundation, Inc.
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3
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4 This program is free software: you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 3 of the License, or
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7 (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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16
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17 /* Many stdio implementations have the same logic and therefore can share
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18 the same implementation of stdio extension API, except that some fields
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19 have different naming conventions, or their access requires some casts. */
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20
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21
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22 /* BSD stdio derived implementations. */
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23
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24 #if defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
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25
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26 # if defined __DragonFly__ /* DragonFly */
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27 /* See <http://www.dragonflybsd.org/cvsweb/src/lib/libc/stdio/priv_stdio.h?rev=HEAD&content-type=text/x-cvsweb-markup>. */
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28 # define fp_ ((struct { struct __FILE_public pub; \
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29 struct { unsigned char *_base; int _size; } _bf; \
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30 void *cookie; \
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31 void *_close; \
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32 void *_read; \
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33 void *_seek; \
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34 void *_write; \
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35 struct { unsigned char *_base; int _size; } _ub; \
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36 int _ur; \
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37 unsigned char _ubuf[3]; \
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38 unsigned char _nbuf[1]; \
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39 struct { unsigned char *_base; int _size; } _lb; \
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40 int _blksize; \
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41 fpos_t _offset; \
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42 /* More fields, not relevant here. */ \
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43 } *) fp)
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44 /* See <http://www.dragonflybsd.org/cvsweb/src/include/stdio.h?rev=HEAD&content-type=text/x-cvsweb-markup>. */
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45 # define _p pub._p
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46 # define _flags pub._flags
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47 # define _r pub._r
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48 # define _w pub._w
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49 # else
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50 # define fp_ fp
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51 # endif
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52
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53 # if defined __NetBSD__ || defined __OpenBSD__ /* NetBSD, OpenBSD */
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54 /* See <http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/stdio/fileext.h?rev=HEAD&content-type=text/x-cvsweb-markup>
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55 and <http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdio/fileext.h?rev=HEAD&content-type=text/x-cvsweb-markup> */
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56 struct __sfileext
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57 {
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58 struct __sbuf _ub; /* ungetc buffer */
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59 /* More fields, not relevant here. */
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60 };
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61 # define fp_ub ((struct __sfileext *) fp->_ext._base)->_ub
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62 # else /* FreeBSD, DragonFly, MacOS X, Cygwin */
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63 # define fp_ub fp_->_ub
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64 # endif
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65
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66 # define HASUB(fp) (fp_ub._base != NULL)
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67
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68 #endif
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70
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71 /* SystemV derived implementations. */
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72
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73 #if defined _IOERR
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74
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75 # if defined __sun && defined _LP64 /* Solaris/{SPARC,AMD64} 64-bit */
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76 # define fp_ ((struct { unsigned char *_ptr; \
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77 unsigned char *_base; \
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78 unsigned char *_end; \
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79 long _cnt; \
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80 int _file; \
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81 unsigned int _flag; \
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82 } *) fp)
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83 # else
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84 # define fp_ fp
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85 # endif
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86
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87 # if defined _SCO_DS /* OpenServer */
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88 # define _cnt __cnt
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89 # define _ptr __ptr
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90 # define _base __base
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91 # define _flag __flag
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92 # endif
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93
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94 #endif