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[glibc.git] / libio / libioP.h
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1 /* Copyright (C) 1993, 1997-2001, 2002 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library 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 GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA.
19 As a special exception, if you link the code in this file with
20 files compiled with a GNU compiler to produce an executable,
21 that does not cause the resulting executable to be covered by
22 the GNU Lesser General Public License. This exception does not
23 however invalidate any other reasons why the executable file
24 might be covered by the GNU Lesser General Public License.
25 This exception applies to code released by its copyright holders
26 in files containing the exception. */
28 #include <errno.h>
29 #ifndef __set_errno
30 # define __set_errno(Val) errno = (Val)
31 #endif
32 #if defined __GLIBC__ && __GLIBC__ >= 2
33 # include <bits/libc-lock.h>
34 #else
35 /*# include <comthread.h>*/
36 #endif
38 #include "iolibio.h"
40 /* Control of exported symbols. Used in glibc. By default we don't
41 do anything. */
42 #ifndef INTUSE
43 # define INTUSE(name) name
44 #endif
45 #ifndef INTDEF
46 # define INTDEF(name)
47 #endif
48 #ifndef INTDEF2
49 # define INTDEF2(name)
50 #endif
51 #ifndef libc_hidden_proto
52 # define libc_hidden_proto(name)
53 #endif
54 #ifndef libc_hidden_def
55 # define libc_hidden_def(name)
56 #endif
57 #ifndef libc_hidden_weak
58 # define libc_hidden_weak(name)
59 #endif
61 #ifdef __cplusplus
62 extern "C" {
63 #endif
65 #define _IO_seek_set 0
66 #define _IO_seek_cur 1
67 #define _IO_seek_end 2
69 /* THE JUMPTABLE FUNCTIONS.
71 * The _IO_FILE type is used to implement the FILE type in GNU libc,
72 * as well as the streambuf class in GNU iostreams for C++.
73 * These are all the same, just used differently.
74 * An _IO_FILE (or FILE) object is allows followed by a pointer to
75 * a jump table (of pointers to functions). The pointer is accessed
76 * with the _IO_JUMPS macro. The jump table has a eccentric format,
77 * so as to be compatible with the layout of a C++ virtual function table.
78 * (as implemented by g++). When a pointer to a streambuf object is
79 * coerced to an (_IO_FILE*), then _IO_JUMPS on the result just
80 * happens to point to the virtual function table of the streambuf.
81 * Thus the _IO_JUMPS function table used for C stdio/libio does
82 * double duty as the virtual function table for C++ streambuf.
84 * The entries in the _IO_JUMPS function table (and hence also the
85 * virtual functions of a streambuf) are described below.
86 * The first parameter of each function entry is the _IO_FILE/streambuf
87 * object being acted on (i.e. the 'this' parameter).
90 #ifdef _LIBC
91 # include <shlib-compat.h>
92 # if !SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
93 /* Setting this macro disables the use of the _vtable_offset
94 bias in _IO_JUMPS_FUNCS, below. That is only needed if we
95 want to support old binaries (see oldfileops.c). */
96 # define _G_IO_NO_BACKWARD_COMPAT 1
97 # endif
98 #endif
100 #if (!defined _IO_USE_OLD_IO_FILE \
101 && (!defined _G_IO_NO_BACKWARD_COMPAT || _G_IO_NO_BACKWARD_COMPAT == 0))
102 # define _IO_JUMPS_OFFSET 1
103 #endif
105 #define _IO_JUMPS(THIS) (THIS)->vtable
106 #define _IO_WIDE_JUMPS(THIS) ((struct _IO_FILE *) (THIS))->_wide_data->_wide_vtable
107 #define _IO_CHECK_WIDE(THIS) (((struct _IO_FILE *) (THIS))->_wide_data != NULL)
109 #if _IO_JUMPS_OFFSET
110 # define _IO_JUMPS_FUNC(THIS) \
111 (*(struct _IO_jump_t **) ((void *) &_IO_JUMPS ((struct _IO_FILE_plus *) (THIS)) \
112 + (THIS)->_vtable_offset))
113 #else
114 # define _IO_JUMPS_FUNC(THIS) _IO_JUMPS ((struct _IO_FILE_plus *) (THIS))
115 #endif
116 #define _IO_WIDE_JUMPS_FUNC(THIS) _IO_WIDE_JUMPS(THIS)
117 #ifdef _G_USING_THUNKS
118 # define JUMP_FIELD(TYPE, NAME) TYPE NAME
119 # define JUMP0(FUNC, THIS) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS)
120 # define JUMP1(FUNC, THIS, X1) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS, X1)
121 # define JUMP2(FUNC, THIS, X1, X2) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS, X1, X2)
122 # define JUMP3(FUNC, THIS, X1,X2,X3) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS, X1,X2, X3)
123 # define JUMP_INIT(NAME, VALUE) VALUE
124 # define JUMP_INIT_DUMMY JUMP_INIT(dummy, 0), JUMP_INIT (dummy2, 0)
126 # define WJUMP0(FUNC, THIS) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS)
127 # define WJUMP1(FUNC, THIS, X1) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS, X1)
128 # define WJUMP2(FUNC, THIS, X1, X2) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS, X1, X2)
129 # define WJUMP3(FUNC, THIS, X1,X2,X3) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS, X1,X2, X3)
130 #else
131 /* These macros will change when we re-implement vtables to use "thunks"! */
132 # define JUMP_FIELD(TYPE, NAME) struct { short delta1, delta2; TYPE pfn; } NAME
133 # define JUMP0(FUNC, THIS) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS)
134 # define JUMP1(FUNC, THIS, X1) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1)
135 # define JUMP2(FUNC, THIS, X1, X2) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1, X2)
136 # define JUMP3(FUNC, THIS, X1,X2,X3) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1,X2,X3)
137 # define JUMP_INIT(NAME, VALUE) {0, 0, VALUE}
138 # define JUMP_INIT_DUMMY JUMP_INIT(dummy, 0)
140 # define WJUMP0(FUNC, THIS) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS)
141 # define WJUMP1(FUNC, THIS, X1) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1)
142 # define WJUMP2(FUNC, THIS, X1, X2) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1, X2)
143 # define WJUMP3(FUNC, THIS, X1,X2,X3) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1,X2,X3)
144 #endif
146 /* The 'finish' function does any final cleaning up of an _IO_FILE object.
147 It does not delete (free) it, but does everything else to finalize it.
148 It matches the streambuf::~streambuf virtual destructor. */
149 typedef void (*_IO_finish_t) __PMT ((_IO_FILE *, int)); /* finalize */
150 #define _IO_FINISH(FP) JUMP1 (__finish, FP, 0)
151 #define _IO_WFINISH(FP) WJUMP1 (__finish, FP, 0)
153 /* The 'overflow' hook flushes the buffer.
154 The second argument is a character, or EOF.
155 It matches the streambuf::overflow virtual function. */
156 typedef int (*_IO_overflow_t) __PMT ((_IO_FILE *, int));
157 #define _IO_OVERFLOW(FP, CH) JUMP1 (__overflow, FP, CH)
158 #define _IO_WOVERFLOW(FP, CH) WJUMP1 (__overflow, FP, CH)
160 /* The 'underflow' hook tries to fills the get buffer.
161 It returns the next character (as an unsigned char) or EOF. The next
162 character remains in the get buffer, and the get position is not changed.
163 It matches the streambuf::underflow virtual function. */
164 typedef int (*_IO_underflow_t) __PMT ((_IO_FILE *));
165 #define _IO_UNDERFLOW(FP) JUMP0 (__underflow, FP)
166 #define _IO_WUNDERFLOW(FP) WJUMP0 (__underflow, FP)
168 /* The 'uflow' hook returns the next character in the input stream
169 (cast to unsigned char), and increments the read position;
170 EOF is returned on failure.
171 It matches the streambuf::uflow virtual function, which is not in the
172 cfront implementation, but was added to C++ by the ANSI/ISO committee. */
173 #define _IO_UFLOW(FP) JUMP0 (__uflow, FP)
174 #define _IO_WUFLOW(FP) WJUMP0 (__uflow, FP)
176 /* The 'pbackfail' hook handles backing up.
177 It matches the streambuf::pbackfail virtual function. */
178 typedef int (*_IO_pbackfail_t) __PMT ((_IO_FILE *, int));
179 #define _IO_PBACKFAIL(FP, CH) JUMP1 (__pbackfail, FP, CH)
180 #define _IO_WPBACKFAIL(FP, CH) WJUMP1 (__pbackfail, FP, CH)
182 /* The 'xsputn' hook writes upto N characters from buffer DATA.
183 Returns the number of character actually written.
184 It matches the streambuf::xsputn virtual function. */
185 typedef _IO_size_t (*_IO_xsputn_t) __PMT ((_IO_FILE *FP, const void *DATA,
186 _IO_size_t N));
187 #define _IO_XSPUTN(FP, DATA, N) JUMP2 (__xsputn, FP, DATA, N)
188 #define _IO_WXSPUTN(FP, DATA, N) WJUMP2 (__xsputn, FP, DATA, N)
190 /* The 'xsgetn' hook reads upto N characters into buffer DATA.
191 Returns the number of character actually read.
192 It matches the streambuf::xsgetn virtual function. */
193 typedef _IO_size_t (*_IO_xsgetn_t) __PMT ((_IO_FILE *FP, void *DATA,
194 _IO_size_t N));
195 #define _IO_XSGETN(FP, DATA, N) JUMP2 (__xsgetn, FP, DATA, N)
196 #define _IO_WXSGETN(FP, DATA, N) WJUMP2 (__xsgetn, FP, DATA, N)
198 /* The 'seekoff' hook moves the stream position to a new position
199 relative to the start of the file (if DIR==0), the current position
200 (MODE==1), or the end of the file (MODE==2).
201 It matches the streambuf::seekoff virtual function.
202 It is also used for the ANSI fseek function. */
203 typedef _IO_off64_t (*_IO_seekoff_t) __PMT ((_IO_FILE *FP, _IO_off64_t OFF,
204 int DIR, int MODE));
205 #define _IO_SEEKOFF(FP, OFF, DIR, MODE) JUMP3 (__seekoff, FP, OFF, DIR, MODE)
206 #define _IO_WSEEKOFF(FP, OFF, DIR, MODE) WJUMP3 (__seekoff, FP, OFF, DIR, MODE)
208 /* The 'seekpos' hook also moves the stream position,
209 but to an absolute position given by a fpos64_t (seekpos).
210 It matches the streambuf::seekpos virtual function.
211 It is also used for the ANSI fgetpos and fsetpos functions. */
212 /* The _IO_seek_cur and _IO_seek_end options are not allowed. */
213 typedef _IO_off64_t (*_IO_seekpos_t) __PMT ((_IO_FILE *, _IO_off64_t, int));
214 #define _IO_SEEKPOS(FP, POS, FLAGS) JUMP2 (__seekpos, FP, POS, FLAGS)
215 #define _IO_WSEEKPOS(FP, POS, FLAGS) WJUMP2 (__seekpos, FP, POS, FLAGS)
217 /* The 'setbuf' hook gives a buffer to the file.
218 It matches the streambuf::setbuf virtual function. */
219 typedef _IO_FILE* (*_IO_setbuf_t) __PMT ((_IO_FILE *, char *, _IO_ssize_t));
220 #define _IO_SETBUF(FP, BUFFER, LENGTH) JUMP2 (__setbuf, FP, BUFFER, LENGTH)
221 #define _IO_WSETBUF(FP, BUFFER, LENGTH) WJUMP2 (__setbuf, FP, BUFFER, LENGTH)
223 /* The 'sync' hook attempts to synchronize the internal data structures
224 of the file with the external state.
225 It matches the streambuf::sync virtual function. */
226 typedef int (*_IO_sync_t) __PMT ((_IO_FILE *));
227 #define _IO_SYNC(FP) JUMP0 (__sync, FP)
228 #define _IO_WSYNC(FP) WJUMP0 (__sync, FP)
230 /* The 'doallocate' hook is used to tell the file to allocate a buffer.
231 It matches the streambuf::doallocate virtual function, which is not
232 in the ANSI/ISO C++ standard, but is part traditional implementations. */
233 typedef int (*_IO_doallocate_t) __PMT ((_IO_FILE *));
234 #define _IO_DOALLOCATE(FP) JUMP0 (__doallocate, FP)
235 #define _IO_WDOALLOCATE(FP) WJUMP0 (__doallocate, FP)
237 /* The following four hooks (sysread, syswrite, sysclose, sysseek, and
238 sysstat) are low-level hooks specific to this implementation.
239 There is no correspondence in the ANSI/ISO C++ standard library.
240 The hooks basically correspond to the Unix system functions
241 (read, write, close, lseek, and stat) except that a _IO_FILE*
242 parameter is used instead of a integer file descriptor; the default
243 implementation used for normal files just calls those functions.
244 The advantage of overriding these functions instead of the higher-level
245 ones (underflow, overflow etc) is that you can leave all the buffering
246 higher-level functions. */
248 /* The 'sysread' hook is used to read data from the external file into
249 an existing buffer. It generalizes the Unix read(2) function.
250 It matches the streambuf::sys_read virtual function, which is
251 specific to this implementation. */
252 typedef _IO_ssize_t (*_IO_read_t) __PMT ((_IO_FILE *, void *, _IO_ssize_t));
253 #define _IO_SYSREAD(FP, DATA, LEN) JUMP2 (__read, FP, DATA, LEN)
254 #define _IO_WSYSREAD(FP, DATA, LEN) WJUMP2 (__read, FP, DATA, LEN)
256 /* The 'syswrite' hook is used to write data from an existing buffer
257 to an external file. It generalizes the Unix write(2) function.
258 It matches the streambuf::sys_write virtual function, which is
259 specific to this implementation. */
260 typedef _IO_ssize_t (*_IO_write_t) __PMT ((_IO_FILE *, const void *,
261 _IO_ssize_t));
262 #define _IO_SYSWRITE(FP, DATA, LEN) JUMP2 (__write, FP, DATA, LEN)
263 #define _IO_WSYSWRITE(FP, DATA, LEN) WJUMP2 (__write, FP, DATA, LEN)
265 /* The 'sysseek' hook is used to re-position an external file.
266 It generalizes the Unix lseek(2) function.
267 It matches the streambuf::sys_seek virtual function, which is
268 specific to this implementation. */
269 typedef _IO_off64_t (*_IO_seek_t) __PMT ((_IO_FILE *, _IO_off64_t, int));
270 #define _IO_SYSSEEK(FP, OFFSET, MODE) JUMP2 (__seek, FP, OFFSET, MODE)
271 #define _IO_WSYSSEEK(FP, OFFSET, MODE) WJUMP2 (__seek, FP, OFFSET, MODE)
273 /* The 'sysclose' hook is used to finalize (close, finish up) an
274 external file. It generalizes the Unix close(2) function.
275 It matches the streambuf::sys_close virtual function, which is
276 specific to this implementation. */
277 typedef int (*_IO_close_t) __PMT ((_IO_FILE *)); /* finalize */
278 #define _IO_SYSCLOSE(FP) JUMP0 (__close, FP)
279 #define _IO_WSYSCLOSE(FP) WJUMP0 (__close, FP)
281 /* The 'sysstat' hook is used to get information about an external file
282 into a struct stat buffer. It generalizes the Unix fstat(2) call.
283 It matches the streambuf::sys_stat virtual function, which is
284 specific to this implementation. */
285 typedef int (*_IO_stat_t) __PMT ((_IO_FILE *, void *));
286 #define _IO_SYSSTAT(FP, BUF) JUMP1 (__stat, FP, BUF)
287 #define _IO_WSYSSTAT(FP, BUF) WJUMP1 (__stat, FP, BUF)
289 /* The 'showmany' hook can be used to get an image how much input is
290 available. In many cases the answer will be 0 which means unknown
291 but some cases one can provide real information. */
292 typedef int (*_IO_showmanyc_t) __PMT ((_IO_FILE *));
293 #define _IO_SHOWMANYC(FP) JUMP0 (__showmanyc, FP)
294 #define _IO_WSHOWMANYC(FP) WJUMP0 (__showmanyc, FP)
296 /* The 'imbue' hook is used to get information about the currently
297 installed locales. */
298 typedef void (*_IO_imbue_t) __PMT ((_IO_FILE *, void *));
299 #define _IO_IMBUE(FP, LOCALE) JUMP1 (__imbue, FP, LOCALE)
300 #define _IO_WIMBUE(FP, LOCALE) WJUMP1 (__imbue, FP, LOCALE)
303 #define _IO_CHAR_TYPE char /* unsigned char ? */
304 #define _IO_INT_TYPE int
306 struct _IO_jump_t
308 JUMP_FIELD(_G_size_t, __dummy);
309 #ifdef _G_USING_THUNKS
310 JUMP_FIELD(_G_size_t, __dummy2);
311 #endif
312 JUMP_FIELD(_IO_finish_t, __finish);
313 JUMP_FIELD(_IO_overflow_t, __overflow);
314 JUMP_FIELD(_IO_underflow_t, __underflow);
315 JUMP_FIELD(_IO_underflow_t, __uflow);
316 JUMP_FIELD(_IO_pbackfail_t, __pbackfail);
317 /* showmany */
318 JUMP_FIELD(_IO_xsputn_t, __xsputn);
319 JUMP_FIELD(_IO_xsgetn_t, __xsgetn);
320 JUMP_FIELD(_IO_seekoff_t, __seekoff);
321 JUMP_FIELD(_IO_seekpos_t, __seekpos);
322 JUMP_FIELD(_IO_setbuf_t, __setbuf);
323 JUMP_FIELD(_IO_sync_t, __sync);
324 JUMP_FIELD(_IO_doallocate_t, __doallocate);
325 JUMP_FIELD(_IO_read_t, __read);
326 JUMP_FIELD(_IO_write_t, __write);
327 JUMP_FIELD(_IO_seek_t, __seek);
328 JUMP_FIELD(_IO_close_t, __close);
329 JUMP_FIELD(_IO_stat_t, __stat);
330 JUMP_FIELD(_IO_showmanyc_t, __showmanyc);
331 JUMP_FIELD(_IO_imbue_t, __imbue);
332 #if 0
333 get_column;
334 set_column;
335 #endif
338 /* We always allocate an extra word following an _IO_FILE.
339 This contains a pointer to the function jump table used.
340 This is for compatibility with C++ streambuf; the word can
341 be used to smash to a pointer to a virtual function table. */
343 struct _IO_FILE_plus
345 _IO_FILE file;
346 const struct _IO_jump_t *vtable;
349 /* Special file type for fopencookie function. */
350 struct _IO_cookie_file
352 struct _IO_FILE_plus __fp;
353 void *__cookie;
354 _IO_cookie_io_functions_t __io_functions;
357 _IO_FILE *_IO_fopencookie (void *cookie, const char *mode,
358 _IO_cookie_io_functions_t io_functions);
361 /* Iterator type for walking global linked list of _IO_FILE objects. */
363 typedef struct _IO_FILE *_IO_ITER;
365 /* Generic functions */
367 extern void _IO_switch_to_main_get_area __P ((_IO_FILE *));
368 extern void _IO_switch_to_backup_area __P ((_IO_FILE *));
369 extern int _IO_switch_to_get_mode __P ((_IO_FILE *));
370 extern void _IO_init __P ((_IO_FILE *, int));
371 extern int _IO_sputbackc __P ((_IO_FILE *, int));
372 extern int _IO_sungetc __P ((_IO_FILE *));
373 extern void _IO_un_link __P ((struct _IO_FILE_plus *));
374 extern void _IO_link_in __P ((struct _IO_FILE_plus *));
375 extern void _IO_doallocbuf __P ((_IO_FILE *));
376 extern void _IO_unsave_markers __P ((_IO_FILE *));
377 extern void _IO_setb __P ((_IO_FILE *, char *, char *, int));
378 extern unsigned _IO_adjust_column __P ((unsigned, const char *, int));
379 #define _IO_sputn(__fp, __s, __n) _IO_XSPUTN (__fp, __s, __n)
381 extern void _IO_switch_to_main_wget_area __P ((_IO_FILE *));
382 extern void _IO_switch_to_wbackup_area __P ((_IO_FILE *));
383 extern int _IO_switch_to_wget_mode __P ((_IO_FILE *));
384 extern void _IO_wsetb __P ((_IO_FILE *, wchar_t *, wchar_t *, int));
385 extern wint_t _IO_sputbackwc __P ((_IO_FILE *, wint_t));
386 extern wint_t _IO_sungetwc __P ((_IO_FILE *));
387 extern void _IO_wdoallocbuf __P ((_IO_FILE *));
388 extern void _IO_unsave_wmarkers __P ((_IO_FILE *));
389 extern unsigned _IO_adjust_wcolumn __P ((unsigned, const wchar_t *, int));
391 /* Marker-related function. */
393 extern void _IO_init_marker __P ((struct _IO_marker *, _IO_FILE *));
394 extern void _IO_init_wmarker __P ((struct _IO_marker *, _IO_FILE *));
395 extern void _IO_remove_marker __P ((struct _IO_marker *));
396 extern int _IO_marker_difference __P ((struct _IO_marker *,
397 struct _IO_marker *));
398 extern int _IO_marker_delta __P ((struct _IO_marker *));
399 extern int _IO_wmarker_delta __P ((struct _IO_marker *));
400 extern int _IO_seekmark __P ((_IO_FILE *, struct _IO_marker *, int));
401 extern int _IO_seekwmark __P ((_IO_FILE *, struct _IO_marker *, int));
403 /* Functions for iterating global list and dealing with
404 its lock */
406 extern _IO_ITER _IO_iter_begin __P ((void));
407 extern _IO_ITER _IO_iter_end __P ((void));
408 extern _IO_ITER _IO_iter_next __P ((_IO_ITER));
409 extern _IO_FILE *_IO_iter_file __P ((_IO_ITER));
410 extern void _IO_list_lock __P ((void));
411 extern void _IO_list_unlock __P ((void));
412 extern void _IO_list_resetlock __P ((void));
414 /* Default jumptable functions. */
416 extern int _IO_default_underflow __P ((_IO_FILE *));
417 extern int _IO_default_uflow __P ((_IO_FILE *));
418 extern wint_t _IO_wdefault_uflow __P ((_IO_FILE *));
419 extern int _IO_default_doallocate __P ((_IO_FILE *));
420 extern int _IO_wdefault_doallocate __P ((_IO_FILE *));
421 extern void _IO_default_finish __P ((_IO_FILE *, int));
422 extern void _IO_wdefault_finish __P ((_IO_FILE *, int));
423 extern int _IO_default_pbackfail __P ((_IO_FILE *, int));
424 extern wint_t _IO_wdefault_pbackfail __P ((_IO_FILE *, wint_t));
425 extern _IO_FILE* _IO_default_setbuf __P ((_IO_FILE *, char *, _IO_ssize_t));
426 extern _IO_size_t _IO_default_xsputn __P ((_IO_FILE *, const void *,
427 _IO_size_t));
428 extern _IO_size_t _IO_wdefault_xsputn __P ((_IO_FILE *, const void *,
429 _IO_size_t));
430 extern _IO_size_t _IO_default_xsgetn __P ((_IO_FILE *, void *, _IO_size_t));
431 extern _IO_size_t _IO_wdefault_xsgetn __P ((_IO_FILE *, void *, _IO_size_t));
432 extern _IO_off64_t _IO_default_seekoff __P ((_IO_FILE *,
433 _IO_off64_t, int, int));
434 extern _IO_off64_t _IO_default_seekpos __P ((_IO_FILE *, _IO_off64_t, int));
435 extern _IO_ssize_t _IO_default_write __P ((_IO_FILE *, const void *,
436 _IO_ssize_t));
437 extern _IO_ssize_t _IO_default_read __P ((_IO_FILE *, void *, _IO_ssize_t));
438 extern int _IO_default_stat __P ((_IO_FILE *, void *));
439 extern _IO_off64_t _IO_default_seek __P ((_IO_FILE *, _IO_off64_t, int));
440 extern int _IO_default_sync __P ((_IO_FILE *));
441 #define _IO_default_close ((_IO_close_t) _IO_default_sync)
442 extern int _IO_default_showmanyc __P ((_IO_FILE *));
443 extern void _IO_default_imbue __P ((_IO_FILE *, void *));
445 extern struct _IO_jump_t _IO_file_jumps;
446 extern struct _IO_jump_t _IO_file_jumps_mmap attribute_hidden;
447 extern struct _IO_jump_t _IO_file_jumps_maybe_mmap attribute_hidden;
448 extern struct _IO_jump_t _IO_wfile_jumps attribute_hidden;
449 extern struct _IO_jump_t _IO_wfile_jumps_mmap attribute_hidden;
450 extern struct _IO_jump_t _IO_wfile_jumps_maybe_mmap attribute_hidden;
451 extern struct _IO_jump_t _IO_old_file_jumps attribute_hidden;
452 extern struct _IO_jump_t _IO_streambuf_jumps;
453 extern struct _IO_jump_t _IO_proc_jumps attribute_hidden;
454 extern struct _IO_jump_t _IO_old_proc_jumps attribute_hidden;
455 extern struct _IO_jump_t _IO_str_jumps attribute_hidden;
456 extern struct _IO_jump_t _IO_wstr_jumps attribute_hidden;
457 extern struct _IO_codecvt __libio_codecvt attribute_hidden;
458 extern int _IO_do_write __P ((_IO_FILE *, const char *, _IO_size_t));
459 extern int _IO_new_do_write __P ((_IO_FILE *, const char *, _IO_size_t));
460 extern int _IO_old_do_write __P ((_IO_FILE *, const char *, _IO_size_t));
461 extern int _IO_wdo_write __P ((_IO_FILE *, const wchar_t *, _IO_size_t));
462 extern int _IO_flush_all_lockp __P ((int));
463 extern int _IO_flush_all __P ((void));
464 extern int _IO_cleanup __P ((void));
465 extern void _IO_flush_all_linebuffered __P ((void));
466 extern int _IO_new_fgetpos __P ((_IO_FILE *, _IO_fpos_t *));
467 extern int _IO_old_fgetpos __P ((_IO_FILE *, _IO_fpos_t *));
468 extern int _IO_new_fsetpos __P ((_IO_FILE *, const _IO_fpos_t *));
469 extern int _IO_old_fsetpos __P ((_IO_FILE *, const _IO_fpos_t *));
470 extern int _IO_new_fgetpos64 __P ((_IO_FILE *, _IO_fpos64_t *));
471 extern int _IO_old_fgetpos64 __P ((_IO_FILE *, _IO_fpos64_t *));
472 extern int _IO_new_fsetpos64 __P ((_IO_FILE *, const _IO_fpos64_t *));
473 extern int _IO_old_fsetpos64 __P ((_IO_FILE *, const _IO_fpos64_t *));
476 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
477 # define _IO_do_flush(_f) \
478 ((_f)->_mode <= 0 \
479 ? INTUSE(_IO_do_write)(_f, (_f)->_IO_write_base, \
480 (_f)->_IO_write_ptr-(_f)->_IO_write_base) \
481 : INTUSE(_IO_wdo_write)(_f, (_f)->_wide_data->_IO_write_base, \
482 ((_f)->_wide_data->_IO_write_ptr \
483 - (_f)->_wide_data->_IO_write_base)))
484 #else
485 # define _IO_do_flush(_f) \
486 INTUSE(_IO_do_write)(_f, (_f)->_IO_write_base, \
487 (_f)->_IO_write_ptr-(_f)->_IO_write_base)
488 #endif
489 #define _IO_old_do_flush(_f) \
490 _IO_old_do_write(_f, (_f)->_IO_write_base, \
491 (_f)->_IO_write_ptr-(_f)->_IO_write_base)
492 #define _IO_in_put_mode(_fp) ((_fp)->_flags & _IO_CURRENTLY_PUTTING)
493 #define _IO_mask_flags(fp, f, mask) \
494 ((fp)->_flags = ((fp)->_flags & ~(mask)) | ((f) & (mask)))
495 #define _IO_setg(fp, eb, g, eg) ((fp)->_IO_read_base = (eb),\
496 (fp)->_IO_read_ptr = (g), (fp)->_IO_read_end = (eg))
497 #define _IO_wsetg(fp, eb, g, eg) ((fp)->_wide_data->_IO_read_base = (eb),\
498 (fp)->_wide_data->_IO_read_ptr = (g), \
499 (fp)->_wide_data->_IO_read_end = (eg))
500 #define _IO_setp(__fp, __p, __ep) \
501 ((__fp)->_IO_write_base = (__fp)->_IO_write_ptr \
502 = __p, (__fp)->_IO_write_end = (__ep))
503 #define _IO_wsetp(__fp, __p, __ep) \
504 ((__fp)->_wide_data->_IO_write_base \
505 = (__fp)->_wide_data->_IO_write_ptr = __p, \
506 (__fp)->_wide_data->_IO_write_end = (__ep))
507 #define _IO_have_backup(fp) ((fp)->_IO_save_base != NULL)
508 #define _IO_have_wbackup(fp) ((fp)->_wide_data->_IO_save_base != NULL)
509 #define _IO_in_backup(fp) ((fp)->_flags & _IO_IN_BACKUP)
510 #define _IO_have_markers(fp) ((fp)->_markers != NULL)
511 #define _IO_blen(fp) ((fp)->_IO_buf_end - (fp)->_IO_buf_base)
512 #define _IO_wblen(fp) ((fp)->_wide_data->_IO_buf_end \
513 - (fp)->_wide_data->_IO_buf_base)
515 /* Jumptable functions for files. */
517 extern int _IO_file_doallocate __P ((_IO_FILE *));
518 extern _IO_FILE* _IO_file_setbuf __P ((_IO_FILE *, char *, _IO_ssize_t));
519 extern _IO_off64_t _IO_file_seekoff __P ((_IO_FILE *, _IO_off64_t, int, int));
520 extern _IO_off64_t _IO_file_seekoff_mmap __P ((_IO_FILE *, _IO_off64_t, int,
521 int));
522 extern _IO_off64_t _IO_file_seekoff_maybe_mmap __P ((_IO_FILE *, _IO_off64_t,
523 int, int));
524 extern _IO_size_t _IO_file_xsputn __P ((_IO_FILE *, const void *, _IO_size_t));
525 extern _IO_size_t _IO_file_xsgetn __P ((_IO_FILE *, void *, _IO_size_t));
526 extern int _IO_file_stat __P ((_IO_FILE *, void *));
527 extern int _IO_file_close __P ((_IO_FILE *));
528 extern int _IO_file_close_mmap __P ((_IO_FILE *));
529 extern int _IO_file_underflow __P ((_IO_FILE *));
530 extern int _IO_file_underflow_mmap __P ((_IO_FILE *));
531 extern int _IO_file_underflow_maybe_mmap __P ((_IO_FILE *));
532 extern int _IO_file_overflow __P ((_IO_FILE *, int));
533 #define _IO_file_is_open(__fp) ((__fp)->_fileno != -1)
534 extern void _IO_file_init __P ((struct _IO_FILE_plus *));
535 extern _IO_FILE* _IO_file_attach __P ((_IO_FILE *, int));
536 extern _IO_FILE* _IO_file_open __P ((_IO_FILE *, const char *, int, int,
537 int, int));
538 extern _IO_FILE* _IO_file_fopen __P ((_IO_FILE *, const char *, const char *,
539 int));
540 extern _IO_ssize_t _IO_file_write __P ((_IO_FILE *, const void *,
541 _IO_ssize_t));
542 extern _IO_ssize_t _IO_file_read __P ((_IO_FILE *, void *, _IO_ssize_t));
543 extern int _IO_file_sync __P ((_IO_FILE *));
544 extern int _IO_file_close_it __P ((_IO_FILE *));
545 extern _IO_off64_t _IO_file_seek __P ((_IO_FILE *, _IO_off64_t, int));
546 extern void _IO_file_finish __P ((_IO_FILE *, int));
548 extern _IO_FILE* _IO_new_file_attach __P ((_IO_FILE *, int));
549 extern int _IO_new_file_close_it __P ((_IO_FILE *));
550 extern void _IO_new_file_finish __P ((_IO_FILE *, int));
551 extern _IO_FILE* _IO_new_file_fopen __P ((_IO_FILE *, const char *, const char *,
552 int));
553 extern void _IO_no_init __P ((_IO_FILE *, int, int, struct _IO_wide_data *,
554 struct _IO_jump_t *));
555 extern void _IO_new_file_init __P ((struct _IO_FILE_plus *));
556 extern _IO_FILE* _IO_new_file_setbuf __P ((_IO_FILE *, char *, _IO_ssize_t));
557 extern _IO_FILE* _IO_file_setbuf_mmap __P ((_IO_FILE *, char *, _IO_ssize_t));
558 extern int _IO_new_file_sync __P ((_IO_FILE *));
559 extern int _IO_new_file_underflow __P ((_IO_FILE *));
560 extern int _IO_new_file_overflow __P ((_IO_FILE *, int));
561 extern _IO_off64_t _IO_new_file_seekoff __P ((_IO_FILE *, _IO_off64_t, int, int));
562 extern _IO_ssize_t _IO_new_file_write __P ((_IO_FILE *, const void *,
563 _IO_ssize_t));
564 extern _IO_size_t _IO_new_file_xsputn __P ((_IO_FILE *, const void *, _IO_size_t));
566 extern _IO_FILE* _IO_old_file_setbuf __P ((_IO_FILE *, char *, _IO_ssize_t));
567 extern _IO_off64_t _IO_old_file_seekoff __P ((_IO_FILE *, _IO_off64_t, int,
568 int));
569 extern _IO_size_t _IO_old_file_xsputn __P ((_IO_FILE *, const void *,
570 _IO_size_t));
571 extern int _IO_old_file_underflow __P ((_IO_FILE *));
572 extern int _IO_old_file_overflow __P ((_IO_FILE *, int));
573 extern void _IO_old_file_init __P ((struct _IO_FILE_plus *));
574 extern _IO_FILE* _IO_old_file_attach __P ((_IO_FILE *, int));
575 extern _IO_FILE* _IO_old_file_fopen __P ((_IO_FILE *, const char *,
576 const char *));
577 extern _IO_ssize_t _IO_old_file_write __P ((_IO_FILE *, const void *,
578 _IO_ssize_t));
579 extern int _IO_old_file_sync __P ((_IO_FILE *));
580 extern int _IO_old_file_close_it __P ((_IO_FILE *));
581 extern void _IO_old_file_finish __P ((_IO_FILE *, int));
583 extern int _IO_wfile_doallocate __P ((_IO_FILE *));
584 extern _IO_size_t _IO_wfile_xsputn __P ((_IO_FILE *, const void *,
585 _IO_size_t));
586 extern _IO_FILE* _IO_wfile_setbuf __P ((_IO_FILE *, wchar_t *, _IO_ssize_t));
587 extern wint_t _IO_wfile_sync __P ((_IO_FILE *));
588 extern wint_t _IO_wfile_underflow __P ((_IO_FILE *));
589 extern wint_t _IO_wfile_overflow __P ((_IO_FILE *, wint_t));
590 extern _IO_off64_t _IO_wfile_seekoff __P ((_IO_FILE *, _IO_off64_t, int, int));
592 /* Jumptable functions for proc_files. */
593 extern _IO_FILE* _IO_proc_open __P ((_IO_FILE *, const char *, const char *));
594 extern _IO_FILE* _IO_new_proc_open __P ((_IO_FILE *, const char *, const char *));
595 extern _IO_FILE* _IO_old_proc_open __P ((_IO_FILE *, const char *, const char *));
596 extern int _IO_proc_close __P ((_IO_FILE *));
597 extern int _IO_new_proc_close __P ((_IO_FILE *));
598 extern int _IO_old_proc_close __P ((_IO_FILE *));
600 /* Jumptable functions for strfiles. */
601 extern int _IO_str_underflow __P ((_IO_FILE *));
602 extern int _IO_str_overflow __P ((_IO_FILE *, int));
603 extern int _IO_str_pbackfail __P ((_IO_FILE *, int));
604 extern _IO_off64_t _IO_str_seekoff __P ((_IO_FILE *, _IO_off64_t, int, int));
605 extern void _IO_str_finish __P ((_IO_FILE *, int));
607 /* Other strfile functions */
608 struct _IO_strfile_;
609 extern void _IO_str_init_static __P ((struct _IO_strfile_ *, char *, int, char *));
610 extern void _IO_str_init_readonly __P ((struct _IO_strfile_ *, const char *, int));
611 extern _IO_ssize_t _IO_str_count __P ((_IO_FILE *));
613 /* And the wide character versions. */
614 extern void _IO_wstr_init_static __P ((_IO_FILE *, wchar_t *, int, wchar_t *));
615 extern void _IO_wstr_init_readonly __P ((_IO_FILE *, const char *, int));
616 extern _IO_ssize_t _IO_wstr_count __P ((_IO_FILE *));
617 extern _IO_wint_t _IO_wstr_overflow __P ((_IO_FILE *, _IO_wint_t));
618 extern _IO_wint_t _IO_wstr_underflow __P ((_IO_FILE *));
619 extern _IO_off64_t _IO_wstr_seekoff __P ((_IO_FILE *, _IO_off64_t, int, int));
620 extern _IO_wint_t _IO_wstr_pbackfail __P ((_IO_FILE *, _IO_wint_t));
621 extern void _IO_wstr_finish __P ((_IO_FILE *, int));
623 extern int _IO_vasprintf __P ((char **result_ptr, __const char *format,
624 _IO_va_list args));
625 extern int _IO_vdprintf __P ((int d, __const char *format, _IO_va_list arg));
626 extern int _IO_vsnprintf __P ((char *string, _IO_size_t maxlen,
627 __const char *format, _IO_va_list args));
630 extern _IO_size_t _IO_getline __P ((_IO_FILE *,char *, _IO_size_t, int, int));
631 extern _IO_size_t _IO_getline_info __P ((_IO_FILE *,char *, _IO_size_t,
632 int, int, int *));
633 extern _IO_ssize_t _IO_getdelim __P ((char **, _IO_size_t *, int, _IO_FILE *));
634 extern _IO_size_t _IO_getwline __P ((_IO_FILE *,wchar_t *, _IO_size_t, wint_t,
635 int));
636 extern _IO_size_t _IO_getwline_info __P ((_IO_FILE *,wchar_t *, _IO_size_t,
637 wint_t, int, wint_t *));
638 extern double _IO_strtod __P ((const char *, char **));
639 extern char *_IO_dtoa __P ((double __d, int __mode, int __ndigits,
640 int *__decpt, int *__sign, char **__rve));
641 extern int _IO_outfloat __P ((double __value, _IO_FILE *__sb, int __type,
642 int __width, int __precision, int __flags,
643 int __sign_mode, int __fill));
645 extern struct _IO_FILE_plus *_IO_list_all;
646 extern void (*_IO_cleanup_registration_needed) __PMT ((void));
648 /* Prototype for functions with alternative entry point. */
649 extern int _IO_flush_all_internal __P ((void));
650 extern unsigned _IO_adjust_column_internal __P ((unsigned, const char *, int));
652 extern int _IO_default_uflow_internal __P ((_IO_FILE *));
653 extern void _IO_default_finish_internal __P ((_IO_FILE *, int));
654 extern int _IO_default_pbackfail_internal __P ((_IO_FILE *, int));
655 extern _IO_size_t _IO_default_xsputn_internal __P ((_IO_FILE *, const void *,
656 _IO_size_t));
657 extern _IO_size_t _IO_default_xsgetn_internal __P ((_IO_FILE *, void *,
658 _IO_size_t));
659 extern int _IO_default_doallocate_internal __P ((_IO_FILE *));
660 extern void _IO_wdefault_finish_internal __P ((_IO_FILE *, int));
661 extern wint_t _IO_wdefault_pbackfail_internal __P ((_IO_FILE *, wint_t));
662 extern _IO_size_t _IO_wdefault_xsputn_internal __P ((_IO_FILE *, const void *,
663 _IO_size_t));
664 extern _IO_size_t _IO_wdefault_xsgetn_internal __P ((_IO_FILE *, void *,
665 _IO_size_t));
666 extern int _IO_wdefault_doallocate_internal __P ((_IO_FILE *));
667 extern wint_t _IO_wdefault_uflow_internal __P ((_IO_FILE *));
669 extern int _IO_file_doallocate_internal __P ((_IO_FILE *));
670 extern _IO_FILE* _IO_file_setbuf_internal __P ((_IO_FILE *, char *,
671 _IO_ssize_t));
672 extern _IO_off64_t _IO_file_seekoff_internal __P ((_IO_FILE *, _IO_off64_t,
673 int, int));
674 extern _IO_size_t _IO_file_xsputn_internal __P ((_IO_FILE *, const void *,
675 _IO_size_t));
676 extern _IO_size_t _IO_file_xsgetn_internal __P ((_IO_FILE *, void *,
677 _IO_size_t));
678 extern int _IO_file_stat_internal __P ((_IO_FILE *, void *));
679 extern int _IO_file_close_internal __P ((_IO_FILE *));
680 extern int _IO_file_close_it_internal __P ((_IO_FILE *));
681 extern int _IO_file_underflow_internal __P ((_IO_FILE *));
682 extern int _IO_file_overflow_internal __P ((_IO_FILE *, int));
683 extern void _IO_file_init_internal __P ((struct _IO_FILE_plus *));
684 extern _IO_FILE* _IO_file_attach_internal __P ((_IO_FILE *, int));
685 extern _IO_FILE* _IO_file_fopen_internal __P ((_IO_FILE *, const char *,
686 const char *, int));
687 extern _IO_ssize_t _IO_file_read_internal __P ((_IO_FILE *, void *,
688 _IO_ssize_t));
689 extern int _IO_file_sync_internal __P ((_IO_FILE *));
690 extern _IO_off64_t _IO_file_seek_internal __P ((_IO_FILE *, _IO_off64_t, int));
691 extern void _IO_file_finish_internal __P ((_IO_FILE *, int));
693 extern _IO_size_t _IO_wfile_xsputn_internal __P ((_IO_FILE *, const void *,
694 _IO_size_t));
695 extern _IO_off64_t _IO_wfile_seekoff_internal __P ((_IO_FILE *, _IO_off64_t,
696 int, int));
697 extern wint_t _IO_wfile_sync_internal __P ((_IO_FILE *));
699 extern int _IO_str_underflow_internal __P ((_IO_FILE *));
700 extern int _IO_str_overflow_internal __P ((_IO_FILE *, int));
701 extern int _IO_str_pbackfail_internal __P ((_IO_FILE *, int));
702 extern _IO_off64_t _IO_str_seekoff_internal __P ((_IO_FILE *, _IO_off64_t,
703 int, int));
704 extern void _IO_str_init_static_internal __P ((struct _IO_strfile_ *, char *,
705 int, char *));
707 extern struct _IO_jump_t _IO_file_jumps_internal attribute_hidden;
708 extern struct _IO_jump_t _IO_wfile_jumps_internal attribute_hidden;
710 extern struct _IO_FILE_plus *_IO_list_all_internal attribute_hidden;
712 extern void _IO_link_in_internal __P ((struct _IO_FILE_plus *));
713 extern int _IO_sputbackc_internal __P ((_IO_FILE *, int));
714 extern void _IO_wdoallocbuf_internal __P ((_IO_FILE *));
716 extern _IO_size_t _IO_sgetn_internal (_IO_FILE *, void *, _IO_size_t);
717 extern void _IO_flush_all_linebuffered_internal __P ((void));
718 extern int _IO_switch_to_wget_mode_internal __P ((_IO_FILE *));
719 extern void _IO_unsave_markers_internal __P ((_IO_FILE *));
720 extern void _IO_switch_to_main_wget_area_internal __P ((_IO_FILE *));
721 extern int _IO_wdo_write_internal __P ((_IO_FILE *, const wchar_t *,
722 _IO_size_t));
723 extern int _IO_do_write_internal __P ((_IO_FILE *, const char *, _IO_size_t));
724 extern _IO_ssize_t _IO_padn_internal (_IO_FILE *, int, _IO_ssize_t);
725 extern _IO_size_t _IO_getline_info_internal __P ((_IO_FILE *,char *,
726 _IO_size_t, int, int,
727 int *));
728 extern _IO_size_t _IO_getline_internal __P ((_IO_FILE *, char *, _IO_size_t,
729 int, int));
730 extern void _IO_free_wbackup_area_internal (_IO_FILE *);
731 extern void _IO_free_backup_area_internal (_IO_FILE *);
732 extern void _IO_switch_to_wbackup_area_internal __P ((_IO_FILE *));
733 extern void _IO_setb_internal __P ((_IO_FILE *, char *, char *, int));
734 extern wint_t _IO_sputbackwc_internal __P ((_IO_FILE *, wint_t));
735 extern int _IO_switch_to_get_mode_internal __P ((_IO_FILE *));
736 extern int _IO_vfscanf_internal (_IO_FILE * __restrict,
737 const char * __restrict,
738 _IO_va_list, int *__restrict);
739 extern int _IO_vfprintf_internal (_IO_FILE *__restrict, const char *__restrict,
740 _IO_va_list);
741 extern void _IO_doallocbuf_internal __P ((_IO_FILE *));
742 extern void _IO_wsetb_internal __P ((_IO_FILE *, wchar_t *, wchar_t *, int));
743 extern _IO_off64_t _IO_seekoff_unlocked (_IO_FILE *, _IO_off64_t, int, int)
744 attribute_hidden;
745 extern _IO_off64_t _IO_seekpos_unlocked (_IO_FILE *, _IO_off64_t, int)
746 attribute_hidden;
747 extern int _IO_putc_internal (int __c, _IO_FILE *__fp);
748 extern void _IO_init_internal __P ((_IO_FILE *, int));
749 extern void _IO_un_link_internal __P ((struct _IO_FILE_plus *));
751 #ifndef EOF
752 # define EOF (-1)
753 #endif
754 #ifndef NULL
755 # if defined __GNUG__ && \
756 (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
757 # define NULL (__null)
758 # else
759 # if !defined(__cplusplus)
760 # define NULL ((void*)0)
761 # else
762 # define NULL (0)
763 # endif
764 # endif
765 #endif
767 #if _G_HAVE_MMAP
769 # include <unistd.h>
770 # include <fcntl.h>
771 # include <sys/mman.h>
772 # include <sys/param.h>
774 # if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
775 # define MAP_ANONYMOUS MAP_ANON
776 # endif
778 # if !defined(MAP_ANONYMOUS) || !defined(EXEC_PAGESIZE)
779 # undef _G_HAVE_MMAP
780 # define _G_HAVE_MMAP 0
781 # endif
783 #endif /* _G_HAVE_MMAP */
785 #if _G_HAVE_MMAP
787 # ifdef _LIBC
788 /* When using this code in the GNU libc we must not pollute the name space. */
789 # define mmap __mmap
790 # define munmap __munmap
791 # define ftruncate __ftruncate
792 # endif
794 # define ROUND_TO_PAGE(_S) \
795 (((_S) + EXEC_PAGESIZE - 1) & ~(EXEC_PAGESIZE - 1))
797 # define FREE_BUF(_B, _S) \
798 munmap ((_B), ROUND_TO_PAGE (_S))
799 # define ALLOC_BUF(_B, _S, _R) \
800 do { \
801 (_B) = (char *) mmap (0, ROUND_TO_PAGE (_S), \
802 PROT_READ | PROT_WRITE, \
803 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); \
804 if ((_B) == (char *) MAP_FAILED) \
805 return (_R); \
806 } while (0)
807 # define ALLOC_WBUF(_B, _S, _R) \
808 do { \
809 (_B) = (wchar_t *) mmap (0, ROUND_TO_PAGE (_S), \
810 PROT_READ | PROT_WRITE, \
811 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); \
812 if ((_B) == (wchar_t *) MAP_FAILED) \
813 return (_R); \
814 } while (0)
816 #else /* _G_HAVE_MMAP */
818 # define FREE_BUF(_B, _S) \
819 free(_B)
820 # define ALLOC_BUF(_B, _S, _R) \
821 do { \
822 (_B) = (char*)malloc(_S); \
823 if ((_B) == NULL) \
824 return (_R); \
825 } while (0)
826 # define ALLOC_WBUF(_B, _S, _R) \
827 do { \
828 (_B) = (wchar_t *)malloc(_S); \
829 if ((_B) == NULL) \
830 return (_R); \
831 } while (0)
833 #endif /* _G_HAVE_MMAP */
835 #ifndef OS_FSTAT
836 # define OS_FSTAT fstat
837 #endif
838 struct stat;
839 extern _IO_ssize_t _IO_read __P ((int, void *, _IO_size_t));
840 extern _IO_ssize_t _IO_write __P ((int, const void *, _IO_size_t));
841 extern _IO_off64_t _IO_lseek __P ((int, _IO_off64_t, int));
842 extern int _IO_close __P ((int));
843 extern int _IO_fstat __P ((int, struct stat *));
844 extern int _IO_vscanf __P ((const char *, _IO_va_list));
846 /* _IO_pos_BAD is an _IO_off64_t value indicating error, unknown, or EOF. */
847 #ifndef _IO_pos_BAD
848 # define _IO_pos_BAD ((_IO_off64_t) -1)
849 #endif
850 /* _IO_pos_adjust adjust an _IO_off64_t by some number of bytes. */
851 #ifndef _IO_pos_adjust
852 # define _IO_pos_adjust(pos, delta) ((pos) += (delta))
853 #endif
854 /* _IO_pos_0 is an _IO_off64_t value indicating beginning of file. */
855 #ifndef _IO_pos_0
856 # define _IO_pos_0 ((_IO_off64_t) 0)
857 #endif
859 #ifdef __cplusplus
861 #endif
863 #ifdef _IO_MTSAFE_IO
864 /* check following! */
865 # ifdef _IO_USE_OLD_IO_FILE
866 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
867 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
868 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
869 0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock }
870 # else
871 # if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
872 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
873 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
874 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
875 0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock, _IO_pos_BAD,\
876 NULL, WDP, 0 }
877 # else
878 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
879 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
880 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
881 0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock, _IO_pos_BAD,\
883 # endif
884 # endif
885 #else
886 # ifdef _IO_USE_OLD_IO_FILE
887 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
888 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
889 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
890 0, _IO_pos_BAD }
891 # else
892 # if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
893 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
894 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
895 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
896 0, _IO_pos_BAD, 0, 0, { 0 }, 0, _IO_pos_BAD, \
897 NULL, WDP, 0 }
898 # else
899 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
900 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
901 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
902 0, _IO_pos_BAD, 0, 0, { 0 }, 0, _IO_pos_BAD, \
904 # endif
905 # endif
906 #endif
908 /* VTABLE_LABEL defines NAME as of the CLASS class.
909 CNLENGTH is strlen(#CLASS). */
910 #ifdef __GNUC__
911 # if _G_VTABLE_LABEL_HAS_LENGTH
912 # define VTABLE_LABEL(NAME, CLASS, CNLENGTH) \
913 extern char NAME[] asm (_G_VTABLE_LABEL_PREFIX #CNLENGTH #CLASS);
914 # else
915 # define VTABLE_LABEL(NAME, CLASS, CNLENGTH) \
916 extern char NAME[] asm (_G_VTABLE_LABEL_PREFIX #CLASS);
917 # endif
918 #endif /* __GNUC__ */
920 #if !defined(builtinbuf_vtable) && defined(__cplusplus)
921 # ifdef __GNUC__
922 VTABLE_LABEL(builtinbuf_vtable, builtinbuf, 10)
923 # else
924 # if _G_VTABLE_LABEL_HAS_LENGTH
925 # define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##10builtinbuf
926 # else
927 # define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##builtinbuf
928 # endif
929 # endif
930 #endif /* !defined(builtinbuf_vtable) && defined(__cplusplus) */
932 #if defined(__STDC__) || defined(__cplusplus)
933 # define _IO_va_start(args, last) va_start(args, last)
934 #else
935 # define _IO_va_start(args, last) va_start(args)
936 #endif
938 extern struct _IO_fake_stdiobuf _IO_stdin_buf, _IO_stdout_buf, _IO_stderr_buf;
940 #if 1
941 # define COERCE_FILE(FILE) /* Nothing */
942 #else
943 /* This is part of the kludge for binary compatibility with old stdio. */
944 # define COERCE_FILE(FILE) \
945 (((FILE)->_IO_file_flags & _IO_MAGIC_MASK) == _OLD_MAGIC_MASK \
946 && (FILE) = *(FILE**)&((int*)fp)[1])
947 #endif
949 #ifdef EINVAL
950 # define MAYBE_SET_EINVAL __set_errno (EINVAL)
951 #else
952 # define MAYBE_SET_EINVAL /* nothing */
953 #endif
955 #ifdef IO_DEBUG
956 # define CHECK_FILE(FILE, RET) \
957 if ((FILE) == NULL) { MAYBE_SET_EINVAL; return RET; } \
958 else { COERCE_FILE(FILE); \
959 if (((FILE)->_IO_file_flags & _IO_MAGIC_MASK) != _IO_MAGIC) \
960 { MAYBE_SET_EINVAL; return RET; }}
961 #else
962 # define CHECK_FILE(FILE, RET) COERCE_FILE (FILE)
963 #endif