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
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. */
30 # define __set_errno(Val) errno = (Val)
32 #if defined __GLIBC__ && __GLIBC__ >= 2
33 # include <bits/libc-lock.h>
35 /*# include <comthread.h>*/
40 /* Control of exported symbols. Used in glibc. By default we don't
43 # define INTUSE(name) name
49 # define INTDEF2(name)
51 #ifndef libc_hidden_proto
52 # define libc_hidden_proto(name)
54 #ifndef libc_hidden_def
55 # define libc_hidden_def(name)
57 #ifndef libc_hidden_weak
58 # define libc_hidden_weak(name)
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).
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
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
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)
110 # define _IO_JUMPS_FUNC(THIS) \
111 (*(struct _IO_jump_t **) ((void *) &_IO_JUMPS ((struct _IO_FILE_plus *) (THIS)) \
112 + (THIS)->_vtable_offset))
114 # define _IO_JUMPS_FUNC(THIS) _IO_JUMPS ((struct _IO_FILE_plus *) (THIS))
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)
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)
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
,
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
,
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
,
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 *,
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
308 JUMP_FIELD(_G_size_t
, __dummy
);
309 #ifdef _G_USING_THUNKS
310 JUMP_FIELD(_G_size_t
, __dummy2
);
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
);
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
);
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. */
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
;
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
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 *,
428 extern _IO_size_t _IO_wdefault_xsputn
__P ((_IO_FILE
*, const void *,
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 *,
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) \
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)))
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)
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,
522 extern _IO_off64_t _IO_file_seekoff_maybe_mmap
__P ((_IO_FILE
*, _IO_off64_t
,
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,
538 extern _IO_FILE
* _IO_file_fopen
__P ((_IO_FILE
*, const char *, const char *,
540 extern _IO_ssize_t _IO_file_write
__P ((_IO_FILE
*, const void *,
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 *,
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 *,
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,
569 extern _IO_size_t _IO_old_file_xsputn
__P ((_IO_FILE
*, const void *,
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 *,
577 extern _IO_ssize_t _IO_old_file_write
__P ((_IO_FILE
*, const void *,
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 *,
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 */
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
,
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
,
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,
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 *,
657 extern _IO_size_t _IO_default_xsgetn_internal
__P ((_IO_FILE
*, void *,
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 *,
664 extern _IO_size_t _IO_wdefault_xsgetn_internal
__P ((_IO_FILE
*, void *,
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 *,
672 extern _IO_off64_t _IO_file_seekoff_internal
__P ((_IO_FILE
*, _IO_off64_t
,
674 extern _IO_size_t _IO_file_xsputn_internal
__P ((_IO_FILE
*, const void *,
676 extern _IO_size_t _IO_file_xsgetn_internal
__P ((_IO_FILE
*, void *,
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 *,
687 extern _IO_ssize_t _IO_file_read_internal
__P ((_IO_FILE
*, void *,
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 *,
695 extern _IO_off64_t _IO_wfile_seekoff_internal
__P ((_IO_FILE
*, _IO_off64_t
,
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
,
704 extern void _IO_str_init_static_internal
__P ((struct _IO_strfile_
*, 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 *,
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,
728 extern _IO_size_t _IO_getline_internal
__P ((_IO_FILE
*, char *, _IO_size_t
,
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
,
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)
745 extern _IO_off64_t
_IO_seekpos_unlocked (_IO_FILE
*, _IO_off64_t
, int)
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
*));
755 # if defined __GNUG__ && \
756 (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
757 # define NULL (__null)
759 # if !defined(__cplusplus)
760 # define NULL ((void*)0)
771 # include <sys/mman.h>
772 # include <sys/param.h>
774 # if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
775 # define MAP_ANONYMOUS MAP_ANON
778 # if !defined(MAP_ANONYMOUS) || !defined(EXEC_PAGESIZE)
780 # define _G_HAVE_MMAP 0
783 #endif /* _G_HAVE_MMAP */
788 /* When using this code in the GNU libc we must not pollute the name space. */
790 # define munmap __munmap
791 # define ftruncate __ftruncate
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) \
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) \
807 # define ALLOC_WBUF(_B, _S, _R) \
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) \
816 #else /* _G_HAVE_MMAP */
818 # define FREE_BUF(_B, _S) \
820 # define ALLOC_BUF(_B, _S, _R) \
822 (_B) = (char*)malloc(_S); \
826 # define ALLOC_WBUF(_B, _S, _R) \
828 (_B) = (wchar_t *)malloc(_S); \
833 #endif /* _G_HAVE_MMAP */
836 # define OS_FSTAT fstat
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. */
848 # define _IO_pos_BAD ((_IO_off64_t) -1)
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))
854 /* _IO_pos_0 is an _IO_off64_t value indicating beginning of file. */
856 # define _IO_pos_0 ((_IO_off64_t) 0)
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 }
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,\
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,\
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, \
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, \
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, \
908 /* VTABLE_LABEL defines NAME as of the CLASS class.
909 CNLENGTH is strlen(#CLASS). */
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);
915 # define VTABLE_LABEL(NAME, CLASS, CNLENGTH) \
916 extern char NAME[] asm (_G_VTABLE_LABEL_PREFIX #CLASS);
918 #endif /* __GNUC__ */
920 #if !defined(builtinbuf_vtable) && defined(__cplusplus)
922 VTABLE_LABEL(builtinbuf_vtable
, builtinbuf
, 10)
924 # if _G_VTABLE_LABEL_HAS_LENGTH
925 # define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##10builtinbuf
927 # define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##builtinbuf
930 #endif /* !defined(builtinbuf_vtable) && defined(__cplusplus) */
932 #if defined(__STDC__) || defined(__cplusplus)
933 # define _IO_va_start(args, last) va_start(args, last)
935 # define _IO_va_start(args, last) va_start(args)
938 extern struct _IO_fake_stdiobuf _IO_stdin_buf
, _IO_stdout_buf
, _IO_stderr_buf
;
941 # define COERCE_FILE(FILE) /* Nothing */
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])
950 # define MAYBE_SET_EINVAL __set_errno (EINVAL)
952 # define MAYBE_SET_EINVAL /* nothing */
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; }}
962 # define CHECK_FILE(FILE, RET) COERCE_FILE (FILE)