1 /* Copyright (C) 1993, 1997-2002, 2003 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))
113 # define _IO_vtable_offset(THIS) (THIS)->_vtable_offset
115 # define _IO_JUMPS_FUNC(THIS) _IO_JUMPS ((struct _IO_FILE_plus *) (THIS))
116 # define _IO_vtable_offset(THIS) 0
118 #define _IO_WIDE_JUMPS_FUNC(THIS) _IO_WIDE_JUMPS(THIS)
119 #ifdef _G_USING_THUNKS
120 # define JUMP_FIELD(TYPE, NAME) TYPE NAME
121 # define JUMP0(FUNC, THIS) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS)
122 # define JUMP1(FUNC, THIS, X1) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS, X1)
123 # define JUMP2(FUNC, THIS, X1, X2) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS, X1, X2)
124 # define JUMP3(FUNC, THIS, X1,X2,X3) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS, X1,X2, X3)
125 # define JUMP_INIT(NAME, VALUE) VALUE
126 # define JUMP_INIT_DUMMY JUMP_INIT(dummy, 0), JUMP_INIT (dummy2, 0)
128 # define WJUMP0(FUNC, THIS) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS)
129 # define WJUMP1(FUNC, THIS, X1) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS, X1)
130 # define WJUMP2(FUNC, THIS, X1, X2) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS, X1, X2)
131 # define WJUMP3(FUNC, THIS, X1,X2,X3) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS, X1,X2, X3)
133 /* These macros will change when we re-implement vtables to use "thunks"! */
134 # define JUMP_FIELD(TYPE, NAME) struct { short delta1, delta2; TYPE pfn; } NAME
135 # define JUMP0(FUNC, THIS) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS)
136 # define JUMP1(FUNC, THIS, X1) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1)
137 # define JUMP2(FUNC, THIS, X1, X2) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1, X2)
138 # define JUMP3(FUNC, THIS, X1,X2,X3) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1,X2,X3)
139 # define JUMP_INIT(NAME, VALUE) {0, 0, VALUE}
140 # define JUMP_INIT_DUMMY JUMP_INIT(dummy, 0)
142 # define WJUMP0(FUNC, THIS) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS)
143 # define WJUMP1(FUNC, THIS, X1) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1)
144 # define WJUMP2(FUNC, THIS, X1, X2) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1, X2)
145 # define WJUMP3(FUNC, THIS, X1,X2,X3) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1,X2,X3)
148 /* The 'finish' function does any final cleaning up of an _IO_FILE object.
149 It does not delete (free) it, but does everything else to finalize it.
150 It matches the streambuf::~streambuf virtual destructor. */
151 typedef void (*_IO_finish_t
) __PMT ((_IO_FILE
*, int)); /* finalize */
152 #define _IO_FINISH(FP) JUMP1 (__finish, FP, 0)
153 #define _IO_WFINISH(FP) WJUMP1 (__finish, FP, 0)
155 /* The 'overflow' hook flushes the buffer.
156 The second argument is a character, or EOF.
157 It matches the streambuf::overflow virtual function. */
158 typedef int (*_IO_overflow_t
) __PMT ((_IO_FILE
*, int));
159 #define _IO_OVERFLOW(FP, CH) JUMP1 (__overflow, FP, CH)
160 #define _IO_WOVERFLOW(FP, CH) WJUMP1 (__overflow, FP, CH)
162 /* The 'underflow' hook tries to fills the get buffer.
163 It returns the next character (as an unsigned char) or EOF. The next
164 character remains in the get buffer, and the get position is not changed.
165 It matches the streambuf::underflow virtual function. */
166 typedef int (*_IO_underflow_t
) __PMT ((_IO_FILE
*));
167 #define _IO_UNDERFLOW(FP) JUMP0 (__underflow, FP)
168 #define _IO_WUNDERFLOW(FP) WJUMP0 (__underflow, FP)
170 /* The 'uflow' hook returns the next character in the input stream
171 (cast to unsigned char), and increments the read position;
172 EOF is returned on failure.
173 It matches the streambuf::uflow virtual function, which is not in the
174 cfront implementation, but was added to C++ by the ANSI/ISO committee. */
175 #define _IO_UFLOW(FP) JUMP0 (__uflow, FP)
176 #define _IO_WUFLOW(FP) WJUMP0 (__uflow, FP)
178 /* The 'pbackfail' hook handles backing up.
179 It matches the streambuf::pbackfail virtual function. */
180 typedef int (*_IO_pbackfail_t
) __PMT ((_IO_FILE
*, int));
181 #define _IO_PBACKFAIL(FP, CH) JUMP1 (__pbackfail, FP, CH)
182 #define _IO_WPBACKFAIL(FP, CH) WJUMP1 (__pbackfail, FP, CH)
184 /* The 'xsputn' hook writes upto N characters from buffer DATA.
185 Returns the number of character actually written.
186 It matches the streambuf::xsputn virtual function. */
187 typedef _IO_size_t (*_IO_xsputn_t
) __PMT ((_IO_FILE
*FP
, const void *DATA
,
189 #define _IO_XSPUTN(FP, DATA, N) JUMP2 (__xsputn, FP, DATA, N)
190 #define _IO_WXSPUTN(FP, DATA, N) WJUMP2 (__xsputn, FP, DATA, N)
192 /* The 'xsgetn' hook reads upto N characters into buffer DATA.
193 Returns the number of character actually read.
194 It matches the streambuf::xsgetn virtual function. */
195 typedef _IO_size_t (*_IO_xsgetn_t
) __PMT ((_IO_FILE
*FP
, void *DATA
,
197 #define _IO_XSGETN(FP, DATA, N) JUMP2 (__xsgetn, FP, DATA, N)
198 #define _IO_WXSGETN(FP, DATA, N) WJUMP2 (__xsgetn, FP, DATA, N)
200 /* The 'seekoff' hook moves the stream position to a new position
201 relative to the start of the file (if DIR==0), the current position
202 (MODE==1), or the end of the file (MODE==2).
203 It matches the streambuf::seekoff virtual function.
204 It is also used for the ANSI fseek function. */
205 typedef _IO_off64_t (*_IO_seekoff_t
) __PMT ((_IO_FILE
*FP
, _IO_off64_t OFF
,
207 #define _IO_SEEKOFF(FP, OFF, DIR, MODE) JUMP3 (__seekoff, FP, OFF, DIR, MODE)
208 #define _IO_WSEEKOFF(FP, OFF, DIR, MODE) WJUMP3 (__seekoff, FP, OFF, DIR, MODE)
210 /* The 'seekpos' hook also moves the stream position,
211 but to an absolute position given by a fpos64_t (seekpos).
212 It matches the streambuf::seekpos virtual function.
213 It is also used for the ANSI fgetpos and fsetpos functions. */
214 /* The _IO_seek_cur and _IO_seek_end options are not allowed. */
215 typedef _IO_off64_t (*_IO_seekpos_t
) __PMT ((_IO_FILE
*, _IO_off64_t
, int));
216 #define _IO_SEEKPOS(FP, POS, FLAGS) JUMP2 (__seekpos, FP, POS, FLAGS)
217 #define _IO_WSEEKPOS(FP, POS, FLAGS) WJUMP2 (__seekpos, FP, POS, FLAGS)
219 /* The 'setbuf' hook gives a buffer to the file.
220 It matches the streambuf::setbuf virtual function. */
221 typedef _IO_FILE
* (*_IO_setbuf_t
) __PMT ((_IO_FILE
*, char *, _IO_ssize_t
));
222 #define _IO_SETBUF(FP, BUFFER, LENGTH) JUMP2 (__setbuf, FP, BUFFER, LENGTH)
223 #define _IO_WSETBUF(FP, BUFFER, LENGTH) WJUMP2 (__setbuf, FP, BUFFER, LENGTH)
225 /* The 'sync' hook attempts to synchronize the internal data structures
226 of the file with the external state.
227 It matches the streambuf::sync virtual function. */
228 typedef int (*_IO_sync_t
) __PMT ((_IO_FILE
*));
229 #define _IO_SYNC(FP) JUMP0 (__sync, FP)
230 #define _IO_WSYNC(FP) WJUMP0 (__sync, FP)
232 /* The 'doallocate' hook is used to tell the file to allocate a buffer.
233 It matches the streambuf::doallocate virtual function, which is not
234 in the ANSI/ISO C++ standard, but is part traditional implementations. */
235 typedef int (*_IO_doallocate_t
) __PMT ((_IO_FILE
*));
236 #define _IO_DOALLOCATE(FP) JUMP0 (__doallocate, FP)
237 #define _IO_WDOALLOCATE(FP) WJUMP0 (__doallocate, FP)
239 /* The following four hooks (sysread, syswrite, sysclose, sysseek, and
240 sysstat) are low-level hooks specific to this implementation.
241 There is no correspondence in the ANSI/ISO C++ standard library.
242 The hooks basically correspond to the Unix system functions
243 (read, write, close, lseek, and stat) except that a _IO_FILE*
244 parameter is used instead of a integer file descriptor; the default
245 implementation used for normal files just calls those functions.
246 The advantage of overriding these functions instead of the higher-level
247 ones (underflow, overflow etc) is that you can leave all the buffering
248 higher-level functions. */
250 /* The 'sysread' hook is used to read data from the external file into
251 an existing buffer. It generalizes the Unix read(2) function.
252 It matches the streambuf::sys_read virtual function, which is
253 specific to this implementation. */
254 typedef _IO_ssize_t (*_IO_read_t
) __PMT ((_IO_FILE
*, void *, _IO_ssize_t
));
255 #define _IO_SYSREAD(FP, DATA, LEN) JUMP2 (__read, FP, DATA, LEN)
256 #define _IO_WSYSREAD(FP, DATA, LEN) WJUMP2 (__read, FP, DATA, LEN)
258 /* The 'syswrite' hook is used to write data from an existing buffer
259 to an external file. It generalizes the Unix write(2) function.
260 It matches the streambuf::sys_write virtual function, which is
261 specific to this implementation. */
262 typedef _IO_ssize_t (*_IO_write_t
) __PMT ((_IO_FILE
*, const void *,
264 #define _IO_SYSWRITE(FP, DATA, LEN) JUMP2 (__write, FP, DATA, LEN)
265 #define _IO_WSYSWRITE(FP, DATA, LEN) WJUMP2 (__write, FP, DATA, LEN)
267 /* The 'sysseek' hook is used to re-position an external file.
268 It generalizes the Unix lseek(2) function.
269 It matches the streambuf::sys_seek virtual function, which is
270 specific to this implementation. */
271 typedef _IO_off64_t (*_IO_seek_t
) __PMT ((_IO_FILE
*, _IO_off64_t
, int));
272 #define _IO_SYSSEEK(FP, OFFSET, MODE) JUMP2 (__seek, FP, OFFSET, MODE)
273 #define _IO_WSYSSEEK(FP, OFFSET, MODE) WJUMP2 (__seek, FP, OFFSET, MODE)
275 /* The 'sysclose' hook is used to finalize (close, finish up) an
276 external file. It generalizes the Unix close(2) function.
277 It matches the streambuf::sys_close virtual function, which is
278 specific to this implementation. */
279 typedef int (*_IO_close_t
) __PMT ((_IO_FILE
*)); /* finalize */
280 #define _IO_SYSCLOSE(FP) JUMP0 (__close, FP)
281 #define _IO_WSYSCLOSE(FP) WJUMP0 (__close, FP)
283 /* The 'sysstat' hook is used to get information about an external file
284 into a struct stat buffer. It generalizes the Unix fstat(2) call.
285 It matches the streambuf::sys_stat virtual function, which is
286 specific to this implementation. */
287 typedef int (*_IO_stat_t
) __PMT ((_IO_FILE
*, void *));
288 #define _IO_SYSSTAT(FP, BUF) JUMP1 (__stat, FP, BUF)
289 #define _IO_WSYSSTAT(FP, BUF) WJUMP1 (__stat, FP, BUF)
291 /* The 'showmany' hook can be used to get an image how much input is
292 available. In many cases the answer will be 0 which means unknown
293 but some cases one can provide real information. */
294 typedef int (*_IO_showmanyc_t
) __PMT ((_IO_FILE
*));
295 #define _IO_SHOWMANYC(FP) JUMP0 (__showmanyc, FP)
296 #define _IO_WSHOWMANYC(FP) WJUMP0 (__showmanyc, FP)
298 /* The 'imbue' hook is used to get information about the currently
299 installed locales. */
300 typedef void (*_IO_imbue_t
) __PMT ((_IO_FILE
*, void *));
301 #define _IO_IMBUE(FP, LOCALE) JUMP1 (__imbue, FP, LOCALE)
302 #define _IO_WIMBUE(FP, LOCALE) WJUMP1 (__imbue, FP, LOCALE)
305 #define _IO_CHAR_TYPE char /* unsigned char ? */
306 #define _IO_INT_TYPE int
310 JUMP_FIELD(_G_size_t
, __dummy
);
311 #ifdef _G_USING_THUNKS
312 JUMP_FIELD(_G_size_t
, __dummy2
);
314 JUMP_FIELD(_IO_finish_t
, __finish
);
315 JUMP_FIELD(_IO_overflow_t
, __overflow
);
316 JUMP_FIELD(_IO_underflow_t
, __underflow
);
317 JUMP_FIELD(_IO_underflow_t
, __uflow
);
318 JUMP_FIELD(_IO_pbackfail_t
, __pbackfail
);
320 JUMP_FIELD(_IO_xsputn_t
, __xsputn
);
321 JUMP_FIELD(_IO_xsgetn_t
, __xsgetn
);
322 JUMP_FIELD(_IO_seekoff_t
, __seekoff
);
323 JUMP_FIELD(_IO_seekpos_t
, __seekpos
);
324 JUMP_FIELD(_IO_setbuf_t
, __setbuf
);
325 JUMP_FIELD(_IO_sync_t
, __sync
);
326 JUMP_FIELD(_IO_doallocate_t
, __doallocate
);
327 JUMP_FIELD(_IO_read_t
, __read
);
328 JUMP_FIELD(_IO_write_t
, __write
);
329 JUMP_FIELD(_IO_seek_t
, __seek
);
330 JUMP_FIELD(_IO_close_t
, __close
);
331 JUMP_FIELD(_IO_stat_t
, __stat
);
332 JUMP_FIELD(_IO_showmanyc_t
, __showmanyc
);
333 JUMP_FIELD(_IO_imbue_t
, __imbue
);
340 /* We always allocate an extra word following an _IO_FILE.
341 This contains a pointer to the function jump table used.
342 This is for compatibility with C++ streambuf; the word can
343 be used to smash to a pointer to a virtual function table. */
348 const struct _IO_jump_t
*vtable
;
351 /* Special file type for fopencookie function. */
352 struct _IO_cookie_file
354 struct _IO_FILE_plus __fp
;
356 _IO_cookie_io_functions_t __io_functions
;
359 _IO_FILE
*_IO_fopencookie (void *cookie
, const char *mode
,
360 _IO_cookie_io_functions_t io_functions
);
363 /* Iterator type for walking global linked list of _IO_FILE objects. */
365 typedef struct _IO_FILE
*_IO_ITER
;
367 /* Generic functions */
369 extern void _IO_switch_to_main_get_area
__P ((_IO_FILE
*));
370 extern void _IO_switch_to_backup_area
__P ((_IO_FILE
*));
371 extern int _IO_switch_to_get_mode
__P ((_IO_FILE
*));
372 extern void _IO_init
__P ((_IO_FILE
*, int));
373 extern int _IO_sputbackc
__P ((_IO_FILE
*, int));
374 extern int _IO_sungetc
__P ((_IO_FILE
*));
375 extern void _IO_un_link
__P ((struct _IO_FILE_plus
*));
376 extern void _IO_link_in
__P ((struct _IO_FILE_plus
*));
377 extern void _IO_doallocbuf
__P ((_IO_FILE
*));
378 extern void _IO_unsave_markers
__P ((_IO_FILE
*));
379 extern void _IO_setb
__P ((_IO_FILE
*, char *, char *, int));
380 extern unsigned _IO_adjust_column
__P ((unsigned, const char *, int));
381 #define _IO_sputn(__fp, __s, __n) _IO_XSPUTN (__fp, __s, __n)
383 extern void _IO_switch_to_main_wget_area
__P ((_IO_FILE
*));
384 extern void _IO_switch_to_wbackup_area
__P ((_IO_FILE
*));
385 extern int _IO_switch_to_wget_mode
__P ((_IO_FILE
*));
386 extern void _IO_wsetb
__P ((_IO_FILE
*, wchar_t *, wchar_t *, int));
387 extern wint_t _IO_sputbackwc
__P ((_IO_FILE
*, wint_t));
388 extern wint_t _IO_sungetwc
__P ((_IO_FILE
*));
389 extern void _IO_wdoallocbuf
__P ((_IO_FILE
*));
390 extern void _IO_unsave_wmarkers
__P ((_IO_FILE
*));
391 extern unsigned _IO_adjust_wcolumn
__P ((unsigned, const wchar_t *, int));
393 /* Marker-related function. */
395 extern void _IO_init_marker
__P ((struct _IO_marker
*, _IO_FILE
*));
396 extern void _IO_init_wmarker
__P ((struct _IO_marker
*, _IO_FILE
*));
397 extern void _IO_remove_marker
__P ((struct _IO_marker
*));
398 extern int _IO_marker_difference
__P ((struct _IO_marker
*,
399 struct _IO_marker
*));
400 extern int _IO_marker_delta
__P ((struct _IO_marker
*));
401 extern int _IO_wmarker_delta
__P ((struct _IO_marker
*));
402 extern int _IO_seekmark
__P ((_IO_FILE
*, struct _IO_marker
*, int));
403 extern int _IO_seekwmark
__P ((_IO_FILE
*, struct _IO_marker
*, int));
405 /* Functions for iterating global list and dealing with
408 extern _IO_ITER _IO_iter_begin
__P ((void));
409 libc_hidden_proto (_IO_iter_begin
)
410 extern _IO_ITER _IO_iter_end
__P ((void));
411 libc_hidden_proto (_IO_iter_end
)
412 extern _IO_ITER _IO_iter_next
__P ((_IO_ITER
));
413 libc_hidden_proto (_IO_iter_next
)
414 extern _IO_FILE
*_IO_iter_file
__P ((_IO_ITER
));
415 libc_hidden_proto (_IO_iter_file
)
416 extern void _IO_list_lock
__P ((void));
417 libc_hidden_proto (_IO_list_lock
)
418 extern void _IO_list_unlock
__P ((void));
419 libc_hidden_proto (_IO_list_unlock
)
420 extern void _IO_list_resetlock
__P ((void));
421 libc_hidden_proto (_IO_list_resetlock
)
423 /* Default jumptable functions. */
425 extern int _IO_default_underflow
__P ((_IO_FILE
*));
426 extern int _IO_default_uflow
__P ((_IO_FILE
*));
427 extern wint_t _IO_wdefault_uflow
__P ((_IO_FILE
*));
428 extern int _IO_default_doallocate
__P ((_IO_FILE
*));
429 extern int _IO_wdefault_doallocate
__P ((_IO_FILE
*));
430 extern void _IO_default_finish
__P ((_IO_FILE
*, int));
431 extern void _IO_wdefault_finish
__P ((_IO_FILE
*, int));
432 extern int _IO_default_pbackfail
__P ((_IO_FILE
*, int));
433 extern wint_t _IO_wdefault_pbackfail
__P ((_IO_FILE
*, wint_t));
434 extern _IO_FILE
* _IO_default_setbuf
__P ((_IO_FILE
*, char *, _IO_ssize_t
));
435 extern _IO_size_t _IO_default_xsputn
__P ((_IO_FILE
*, const void *,
437 extern _IO_size_t _IO_wdefault_xsputn
__P ((_IO_FILE
*, const void *,
439 extern _IO_size_t _IO_default_xsgetn
__P ((_IO_FILE
*, void *, _IO_size_t
));
440 extern _IO_size_t _IO_wdefault_xsgetn
__P ((_IO_FILE
*, void *, _IO_size_t
));
441 extern _IO_off64_t _IO_default_seekoff
__P ((_IO_FILE
*,
442 _IO_off64_t
, int, int));
443 extern _IO_off64_t _IO_default_seekpos
__P ((_IO_FILE
*, _IO_off64_t
, int));
444 extern _IO_ssize_t _IO_default_write
__P ((_IO_FILE
*, const void *,
446 extern _IO_ssize_t _IO_default_read
__P ((_IO_FILE
*, void *, _IO_ssize_t
));
447 extern int _IO_default_stat
__P ((_IO_FILE
*, void *));
448 extern _IO_off64_t _IO_default_seek
__P ((_IO_FILE
*, _IO_off64_t
, int));
449 extern int _IO_default_sync
__P ((_IO_FILE
*));
450 #define _IO_default_close ((_IO_close_t) _IO_default_sync)
451 extern int _IO_default_showmanyc
__P ((_IO_FILE
*));
452 extern void _IO_default_imbue
__P ((_IO_FILE
*, void *));
454 extern struct _IO_jump_t _IO_file_jumps
;
455 libc_hidden_proto (_IO_file_jumps
)
456 extern struct _IO_jump_t _IO_file_jumps_mmap attribute_hidden
;
457 extern struct _IO_jump_t _IO_file_jumps_maybe_mmap attribute_hidden
;
458 extern struct _IO_jump_t _IO_wfile_jumps
;
459 libc_hidden_proto (_IO_wfile_jumps
)
460 extern struct _IO_jump_t _IO_wfile_jumps_mmap attribute_hidden
;
461 extern struct _IO_jump_t _IO_wfile_jumps_maybe_mmap attribute_hidden
;
462 extern struct _IO_jump_t _IO_old_file_jumps attribute_hidden
;
463 extern struct _IO_jump_t _IO_streambuf_jumps
;
464 extern struct _IO_jump_t _IO_old_proc_jumps attribute_hidden
;
465 extern struct _IO_jump_t _IO_str_jumps attribute_hidden
;
466 extern struct _IO_jump_t _IO_wstr_jumps attribute_hidden
;
467 extern struct _IO_codecvt __libio_codecvt attribute_hidden
;
468 extern int _IO_do_write
__P ((_IO_FILE
*, const char *, _IO_size_t
));
469 extern int _IO_new_do_write
__P ((_IO_FILE
*, const char *, _IO_size_t
));
470 extern int _IO_old_do_write
__P ((_IO_FILE
*, const char *, _IO_size_t
));
471 extern int _IO_wdo_write
__P ((_IO_FILE
*, const wchar_t *, _IO_size_t
));
472 extern int _IO_flush_all_lockp
__P ((int));
473 extern int _IO_flush_all
__P ((void));
474 extern int _IO_cleanup
__P ((void));
475 extern void _IO_flush_all_linebuffered
__P ((void));
476 extern int _IO_new_fgetpos
__P ((_IO_FILE
*, _IO_fpos_t
*));
477 extern int _IO_old_fgetpos
__P ((_IO_FILE
*, _IO_fpos_t
*));
478 extern int _IO_new_fsetpos
__P ((_IO_FILE
*, const _IO_fpos_t
*));
479 extern int _IO_old_fsetpos
__P ((_IO_FILE
*, const _IO_fpos_t
*));
480 extern int _IO_new_fgetpos64
__P ((_IO_FILE
*, _IO_fpos64_t
*));
481 extern int _IO_old_fgetpos64
__P ((_IO_FILE
*, _IO_fpos64_t
*));
482 extern int _IO_new_fsetpos64
__P ((_IO_FILE
*, const _IO_fpos64_t
*));
483 extern int _IO_old_fsetpos64
__P ((_IO_FILE
*, const _IO_fpos64_t
*));
484 extern void _IO_old_init
__P ((_IO_FILE
*fp
, int flags
));
487 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
488 # define _IO_do_flush(_f) \
490 ? INTUSE(_IO_do_write)(_f, (_f)->_IO_write_base, \
491 (_f)->_IO_write_ptr-(_f)->_IO_write_base) \
492 : INTUSE(_IO_wdo_write)(_f, (_f)->_wide_data->_IO_write_base, \
493 ((_f)->_wide_data->_IO_write_ptr \
494 - (_f)->_wide_data->_IO_write_base)))
496 # define _IO_do_flush(_f) \
497 INTUSE(_IO_do_write)(_f, (_f)->_IO_write_base, \
498 (_f)->_IO_write_ptr-(_f)->_IO_write_base)
500 #define _IO_old_do_flush(_f) \
501 _IO_old_do_write(_f, (_f)->_IO_write_base, \
502 (_f)->_IO_write_ptr-(_f)->_IO_write_base)
503 #define _IO_in_put_mode(_fp) ((_fp)->_flags & _IO_CURRENTLY_PUTTING)
504 #define _IO_mask_flags(fp, f, mask) \
505 ((fp)->_flags = ((fp)->_flags & ~(mask)) | ((f) & (mask)))
506 #define _IO_setg(fp, eb, g, eg) ((fp)->_IO_read_base = (eb),\
507 (fp)->_IO_read_ptr = (g), (fp)->_IO_read_end = (eg))
508 #define _IO_wsetg(fp, eb, g, eg) ((fp)->_wide_data->_IO_read_base = (eb),\
509 (fp)->_wide_data->_IO_read_ptr = (g), \
510 (fp)->_wide_data->_IO_read_end = (eg))
511 #define _IO_setp(__fp, __p, __ep) \
512 ((__fp)->_IO_write_base = (__fp)->_IO_write_ptr \
513 = __p, (__fp)->_IO_write_end = (__ep))
514 #define _IO_wsetp(__fp, __p, __ep) \
515 ((__fp)->_wide_data->_IO_write_base \
516 = (__fp)->_wide_data->_IO_write_ptr = __p, \
517 (__fp)->_wide_data->_IO_write_end = (__ep))
518 #define _IO_have_backup(fp) ((fp)->_IO_save_base != NULL)
519 #define _IO_have_wbackup(fp) ((fp)->_wide_data->_IO_save_base != NULL)
520 #define _IO_in_backup(fp) ((fp)->_flags & _IO_IN_BACKUP)
521 #define _IO_have_markers(fp) ((fp)->_markers != NULL)
522 #define _IO_blen(fp) ((fp)->_IO_buf_end - (fp)->_IO_buf_base)
523 #define _IO_wblen(fp) ((fp)->_wide_data->_IO_buf_end \
524 - (fp)->_wide_data->_IO_buf_base)
526 /* Jumptable functions for files. */
528 extern int _IO_file_doallocate
__P ((_IO_FILE
*));
529 extern _IO_FILE
* _IO_file_setbuf
__P ((_IO_FILE
*, char *, _IO_ssize_t
));
530 extern _IO_off64_t _IO_file_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int, int));
531 extern _IO_off64_t _IO_file_seekoff_mmap
__P ((_IO_FILE
*, _IO_off64_t
, int,
533 extern _IO_size_t _IO_file_xsputn
__P ((_IO_FILE
*, const void *, _IO_size_t
));
534 extern _IO_size_t _IO_file_xsgetn
__P ((_IO_FILE
*, void *, _IO_size_t
));
535 extern int _IO_file_stat
__P ((_IO_FILE
*, void *));
536 extern int _IO_file_close
__P ((_IO_FILE
*));
537 extern int _IO_file_close_mmap
__P ((_IO_FILE
*));
538 extern int _IO_file_underflow
__P ((_IO_FILE
*));
539 extern int _IO_file_underflow_mmap
__P ((_IO_FILE
*));
540 extern int _IO_file_underflow_maybe_mmap
__P ((_IO_FILE
*));
541 extern int _IO_file_overflow
__P ((_IO_FILE
*, int));
542 #define _IO_file_is_open(__fp) ((__fp)->_fileno != -1)
543 extern void _IO_file_init
__P ((struct _IO_FILE_plus
*));
544 extern _IO_FILE
* _IO_file_attach
__P ((_IO_FILE
*, int));
545 extern _IO_FILE
* _IO_file_open
__P ((_IO_FILE
*, const char *, int, int,
547 libc_hidden_proto (_IO_file_open
)
548 extern _IO_FILE
* _IO_file_fopen
__P ((_IO_FILE
*, const char *, const char *,
550 extern _IO_ssize_t _IO_file_write
__P ((_IO_FILE
*, const void *,
552 extern _IO_ssize_t _IO_file_read
__P ((_IO_FILE
*, void *, _IO_ssize_t
));
553 extern int _IO_file_sync
__P ((_IO_FILE
*));
554 extern int _IO_file_close_it
__P ((_IO_FILE
*));
555 extern _IO_off64_t _IO_file_seek
__P ((_IO_FILE
*, _IO_off64_t
, int));
556 extern void _IO_file_finish
__P ((_IO_FILE
*, int));
558 extern _IO_FILE
* _IO_new_file_attach
__P ((_IO_FILE
*, int));
559 extern int _IO_new_file_close_it
__P ((_IO_FILE
*));
560 extern void _IO_new_file_finish
__P ((_IO_FILE
*, int));
561 extern _IO_FILE
* _IO_new_file_fopen
__P ((_IO_FILE
*, const char *, const char *,
563 extern void _IO_no_init
__P ((_IO_FILE
*, int, int, struct _IO_wide_data
*,
564 struct _IO_jump_t
*));
565 extern void _IO_new_file_init
__P ((struct _IO_FILE_plus
*));
566 extern _IO_FILE
* _IO_new_file_setbuf
__P ((_IO_FILE
*, char *, _IO_ssize_t
));
567 extern _IO_FILE
* _IO_file_setbuf_mmap
__P ((_IO_FILE
*, char *, _IO_ssize_t
));
568 extern int _IO_new_file_sync
__P ((_IO_FILE
*));
569 extern int _IO_new_file_underflow
__P ((_IO_FILE
*));
570 extern int _IO_new_file_overflow
__P ((_IO_FILE
*, int));
571 extern _IO_off64_t _IO_new_file_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int, int));
572 extern _IO_ssize_t _IO_new_file_write
__P ((_IO_FILE
*, const void *,
574 extern _IO_size_t _IO_new_file_xsputn
__P ((_IO_FILE
*, const void *, _IO_size_t
));
576 extern _IO_FILE
* _IO_old_file_setbuf
__P ((_IO_FILE
*, char *, _IO_ssize_t
));
577 extern _IO_off64_t _IO_old_file_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int,
579 extern _IO_size_t _IO_old_file_xsputn
__P ((_IO_FILE
*, const void *,
581 extern int _IO_old_file_underflow
__P ((_IO_FILE
*));
582 extern int _IO_old_file_overflow
__P ((_IO_FILE
*, int));
583 extern void _IO_old_file_init
__P ((struct _IO_FILE_plus
*));
584 extern _IO_FILE
* _IO_old_file_attach
__P ((_IO_FILE
*, int));
585 extern _IO_FILE
* _IO_old_file_fopen
__P ((_IO_FILE
*, const char *,
587 extern _IO_ssize_t _IO_old_file_write
__P ((_IO_FILE
*, const void *,
589 extern int _IO_old_file_sync
__P ((_IO_FILE
*));
590 extern int _IO_old_file_close_it
__P ((_IO_FILE
*));
591 extern void _IO_old_file_finish
__P ((_IO_FILE
*, int));
593 extern int _IO_wfile_doallocate
__P ((_IO_FILE
*));
594 extern _IO_size_t _IO_wfile_xsputn
__P ((_IO_FILE
*, const void *,
596 extern _IO_FILE
* _IO_wfile_setbuf
__P ((_IO_FILE
*, wchar_t *, _IO_ssize_t
));
597 extern wint_t _IO_wfile_sync
__P ((_IO_FILE
*));
598 extern wint_t _IO_wfile_underflow
__P ((_IO_FILE
*));
599 extern wint_t _IO_wfile_overflow
__P ((_IO_FILE
*, wint_t));
600 extern _IO_off64_t _IO_wfile_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int, int));
602 /* Jumptable functions for proc_files. */
603 extern _IO_FILE
* _IO_proc_open
__P ((_IO_FILE
*, const char *, const char *));
604 extern _IO_FILE
* _IO_new_proc_open
__P ((_IO_FILE
*, const char *, const char *));
605 extern _IO_FILE
* _IO_old_proc_open
__P ((_IO_FILE
*, const char *, const char *));
606 extern int _IO_proc_close
__P ((_IO_FILE
*));
607 extern int _IO_new_proc_close
__P ((_IO_FILE
*));
608 extern int _IO_old_proc_close
__P ((_IO_FILE
*));
610 /* Jumptable functions for strfiles. */
611 extern int _IO_str_underflow
__P ((_IO_FILE
*));
612 extern int _IO_str_overflow
__P ((_IO_FILE
*, int));
613 extern int _IO_str_pbackfail
__P ((_IO_FILE
*, int));
614 extern _IO_off64_t _IO_str_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int, int));
615 extern void _IO_str_finish
__P ((_IO_FILE
*, int));
617 /* Other strfile functions */
619 extern void _IO_str_init_static
__P ((struct _IO_strfile_
*, char *, int, char *));
620 extern void _IO_str_init_readonly
__P ((struct _IO_strfile_
*, const char *, int));
621 extern _IO_ssize_t _IO_str_count
__P ((_IO_FILE
*));
623 /* And the wide character versions. */
624 extern void _IO_wstr_init_static
__P ((_IO_FILE
*, wchar_t *, _IO_size_t
, wchar_t *));
625 extern _IO_ssize_t _IO_wstr_count
__P ((_IO_FILE
*));
626 extern _IO_wint_t _IO_wstr_overflow
__P ((_IO_FILE
*, _IO_wint_t
));
627 extern _IO_wint_t _IO_wstr_underflow
__P ((_IO_FILE
*));
628 extern _IO_off64_t _IO_wstr_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int, int));
629 extern _IO_wint_t _IO_wstr_pbackfail
__P ((_IO_FILE
*, _IO_wint_t
));
630 extern void _IO_wstr_finish
__P ((_IO_FILE
*, int));
632 extern int _IO_vasprintf
__P ((char **result_ptr
, __const
char *format
,
634 extern int _IO_vdprintf
__P ((int d
, __const
char *format
, _IO_va_list arg
));
635 extern int _IO_vsnprintf
__P ((char *string
, _IO_size_t maxlen
,
636 __const
char *format
, _IO_va_list args
));
639 extern _IO_size_t _IO_getline
__P ((_IO_FILE
*,char *, _IO_size_t
, int, int));
640 extern _IO_size_t _IO_getline_info
__P ((_IO_FILE
*,char *, _IO_size_t
,
642 extern _IO_ssize_t _IO_getdelim
__P ((char **, _IO_size_t
*, int, _IO_FILE
*));
643 extern _IO_size_t _IO_getwline
__P ((_IO_FILE
*,wchar_t *, _IO_size_t
, wint_t,
645 extern _IO_size_t _IO_getwline_info
__P ((_IO_FILE
*,wchar_t *, _IO_size_t
,
646 wint_t, int, wint_t *));
647 extern double _IO_strtod
__P ((const char *, char **));
648 extern char *_IO_dtoa
__P ((double __d
, int __mode
, int __ndigits
,
649 int *__decpt
, int *__sign
, char **__rve
));
650 extern int _IO_outfloat
__P ((double __value
, _IO_FILE
*__sb
, int __type
,
651 int __width
, int __precision
, int __flags
,
652 int __sign_mode
, int __fill
));
654 extern struct _IO_FILE_plus
*_IO_list_all
;
655 extern void (*_IO_cleanup_registration_needed
) __PMT ((void));
657 /* Prototype for functions with alternative entry point. */
658 extern int _IO_flush_all_internal
__P ((void));
659 extern unsigned _IO_adjust_column_internal
__P ((unsigned, const char *, int));
661 extern int _IO_default_uflow_internal
__P ((_IO_FILE
*));
662 extern void _IO_default_finish_internal
__P ((_IO_FILE
*, int));
663 extern int _IO_default_pbackfail_internal
__P ((_IO_FILE
*, int));
664 extern _IO_size_t _IO_default_xsputn_internal
__P ((_IO_FILE
*, const void *,
666 extern _IO_size_t _IO_default_xsgetn_internal
__P ((_IO_FILE
*, void *,
668 extern int _IO_default_doallocate_internal
__P ((_IO_FILE
*));
669 extern void _IO_wdefault_finish_internal
__P ((_IO_FILE
*, int));
670 extern wint_t _IO_wdefault_pbackfail_internal
__P ((_IO_FILE
*, wint_t));
671 extern _IO_size_t _IO_wdefault_xsputn_internal
__P ((_IO_FILE
*, const void *,
673 extern _IO_size_t _IO_wdefault_xsgetn_internal
__P ((_IO_FILE
*, void *,
675 extern int _IO_wdefault_doallocate_internal
__P ((_IO_FILE
*));
676 extern wint_t _IO_wdefault_uflow_internal
__P ((_IO_FILE
*));
678 extern int _IO_file_doallocate_internal
__P ((_IO_FILE
*));
679 extern _IO_FILE
* _IO_file_setbuf_internal
__P ((_IO_FILE
*, char *,
681 extern _IO_off64_t _IO_file_seekoff_internal
__P ((_IO_FILE
*, _IO_off64_t
,
683 extern _IO_size_t _IO_file_xsputn_internal
__P ((_IO_FILE
*, const void *,
685 extern _IO_size_t _IO_file_xsgetn_internal
__P ((_IO_FILE
*, void *,
687 extern int _IO_file_stat_internal
__P ((_IO_FILE
*, void *));
688 extern int _IO_file_close_internal
__P ((_IO_FILE
*));
689 extern int _IO_file_close_it_internal
__P ((_IO_FILE
*));
690 extern int _IO_file_underflow_internal
__P ((_IO_FILE
*));
691 extern int _IO_file_overflow_internal
__P ((_IO_FILE
*, int));
692 extern void _IO_file_init_internal
__P ((struct _IO_FILE_plus
*));
693 extern _IO_FILE
* _IO_file_attach_internal
__P ((_IO_FILE
*, int));
694 extern _IO_FILE
* _IO_file_fopen_internal
__P ((_IO_FILE
*, const char *,
696 extern _IO_ssize_t _IO_file_read_internal
__P ((_IO_FILE
*, void *,
698 extern int _IO_file_sync_internal
__P ((_IO_FILE
*));
699 extern _IO_off64_t _IO_file_seek_internal
__P ((_IO_FILE
*, _IO_off64_t
, int));
700 extern void _IO_file_finish_internal
__P ((_IO_FILE
*, int));
702 extern _IO_size_t _IO_wfile_xsputn_internal
__P ((_IO_FILE
*, const void *,
704 extern _IO_off64_t _IO_wfile_seekoff_internal
__P ((_IO_FILE
*, _IO_off64_t
,
706 extern wint_t _IO_wfile_sync_internal
__P ((_IO_FILE
*));
708 extern int _IO_str_underflow_internal
__P ((_IO_FILE
*));
709 extern int _IO_str_overflow_internal
__P ((_IO_FILE
*, int));
710 extern int _IO_str_pbackfail_internal
__P ((_IO_FILE
*, int));
711 extern _IO_off64_t _IO_str_seekoff_internal
__P ((_IO_FILE
*, _IO_off64_t
,
713 extern void _IO_str_init_static_internal
__P ((struct _IO_strfile_
*, char *,
714 _IO_size_t
, char *));
716 extern struct _IO_jump_t _IO_file_jumps_internal attribute_hidden
;
717 extern struct _IO_jump_t _IO_wfile_jumps_internal attribute_hidden
;
719 extern struct _IO_FILE_plus
*_IO_list_all_internal attribute_hidden
;
721 extern void _IO_link_in_internal
__P ((struct _IO_FILE_plus
*));
722 extern int _IO_sputbackc_internal
__P ((_IO_FILE
*, int));
723 extern void _IO_wdoallocbuf_internal
__P ((_IO_FILE
*));
725 extern _IO_size_t
_IO_sgetn_internal (_IO_FILE
*, void *, _IO_size_t
);
726 extern void _IO_flush_all_linebuffered_internal
__P ((void));
727 extern int _IO_switch_to_wget_mode_internal
__P ((_IO_FILE
*));
728 extern void _IO_unsave_markers_internal
__P ((_IO_FILE
*));
729 extern void _IO_switch_to_main_wget_area_internal
__P ((_IO_FILE
*));
730 extern int _IO_wdo_write_internal
__P ((_IO_FILE
*, const wchar_t *,
732 extern int _IO_do_write_internal
__P ((_IO_FILE
*, const char *, _IO_size_t
));
733 extern _IO_ssize_t
_IO_padn_internal (_IO_FILE
*, int, _IO_ssize_t
);
734 extern _IO_size_t _IO_getline_info_internal
__P ((_IO_FILE
*,char *,
735 _IO_size_t
, int, int,
737 extern _IO_size_t _IO_getline_internal
__P ((_IO_FILE
*, char *, _IO_size_t
,
739 extern void _IO_free_wbackup_area_internal (_IO_FILE
*);
740 extern void _IO_free_backup_area_internal (_IO_FILE
*);
741 extern void _IO_switch_to_wbackup_area_internal
__P ((_IO_FILE
*));
742 extern void _IO_setb_internal
__P ((_IO_FILE
*, char *, char *, int));
743 extern wint_t _IO_sputbackwc_internal
__P ((_IO_FILE
*, wint_t));
744 extern int _IO_switch_to_get_mode_internal
__P ((_IO_FILE
*));
745 extern int _IO_vfscanf_internal (_IO_FILE
* __restrict
,
746 const char * __restrict
,
747 _IO_va_list
, int *__restrict
);
748 extern int _IO_vfprintf_internal (_IO_FILE
*__restrict
, const char *__restrict
,
750 extern void _IO_doallocbuf_internal
__P ((_IO_FILE
*));
751 extern void _IO_wsetb_internal
__P ((_IO_FILE
*, wchar_t *, wchar_t *, int));
752 extern _IO_off64_t
_IO_seekoff_unlocked (_IO_FILE
*, _IO_off64_t
, int, int)
754 extern _IO_off64_t
_IO_seekpos_unlocked (_IO_FILE
*, _IO_off64_t
, int)
756 extern int _IO_putc_internal (int __c
, _IO_FILE
*__fp
);
757 extern void _IO_init_internal
__P ((_IO_FILE
*, int));
758 extern void _IO_un_link_internal
__P ((struct _IO_FILE_plus
*));
764 # if defined __GNUG__ && \
765 (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
766 # define NULL (__null)
768 # if !defined(__cplusplus)
769 # define NULL ((void*)0)
780 # include <sys/mman.h>
781 # include <sys/param.h>
783 # if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
784 # define MAP_ANONYMOUS MAP_ANON
787 # if !defined(MAP_ANONYMOUS) || !defined(EXEC_PAGESIZE)
789 # define _G_HAVE_MMAP 0
792 #endif /* _G_HAVE_MMAP */
797 /* When using this code in the GNU libc we must not pollute the name space. */
799 # define munmap __munmap
800 # define ftruncate __ftruncate
803 # define ROUND_TO_PAGE(_S) \
804 (((_S) + EXEC_PAGESIZE - 1) & ~(EXEC_PAGESIZE - 1))
806 # define FREE_BUF(_B, _S) \
807 munmap ((_B), ROUND_TO_PAGE (_S))
808 # define ALLOC_BUF(_B, _S, _R) \
810 (_B) = (char *) mmap (0, ROUND_TO_PAGE (_S), \
811 PROT_READ | PROT_WRITE, \
812 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); \
813 if ((_B) == (char *) MAP_FAILED) \
816 # define ALLOC_WBUF(_B, _S, _R) \
818 (_B) = (wchar_t *) mmap (0, ROUND_TO_PAGE (_S), \
819 PROT_READ | PROT_WRITE, \
820 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); \
821 if ((_B) == (wchar_t *) MAP_FAILED) \
825 #else /* _G_HAVE_MMAP */
827 # define FREE_BUF(_B, _S) \
829 # define ALLOC_BUF(_B, _S, _R) \
831 (_B) = (char*)malloc(_S); \
835 # define ALLOC_WBUF(_B, _S, _R) \
837 (_B) = (wchar_t *)malloc(_S); \
842 #endif /* _G_HAVE_MMAP */
845 # define OS_FSTAT fstat
848 extern _IO_ssize_t _IO_read
__P ((int, void *, _IO_size_t
));
849 extern _IO_ssize_t _IO_write
__P ((int, const void *, _IO_size_t
));
850 extern _IO_off64_t _IO_lseek
__P ((int, _IO_off64_t
, int));
851 extern int _IO_close
__P ((int));
852 extern int _IO_fstat
__P ((int, struct stat
*));
853 extern int _IO_vscanf
__P ((const char *, _IO_va_list
));
855 /* _IO_pos_BAD is an _IO_off64_t value indicating error, unknown, or EOF. */
857 # define _IO_pos_BAD ((_IO_off64_t) -1)
859 /* _IO_pos_adjust adjust an _IO_off64_t by some number of bytes. */
860 #ifndef _IO_pos_adjust
861 # define _IO_pos_adjust(pos, delta) ((pos) += (delta))
863 /* _IO_pos_0 is an _IO_off64_t value indicating beginning of file. */
865 # define _IO_pos_0 ((_IO_off64_t) 0)
873 /* check following! */
874 # ifdef _IO_USE_OLD_IO_FILE
875 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
876 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
877 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
878 0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock }
880 # if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
881 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
882 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
883 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
884 0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock, _IO_pos_BAD,\
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, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock, _IO_pos_BAD,\
895 # ifdef _IO_USE_OLD_IO_FILE
896 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
897 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
898 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
901 # if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
902 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
903 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
904 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
905 0, _IO_pos_BAD, 0, 0, { 0 }, 0, _IO_pos_BAD, \
908 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
909 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
910 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
911 0, _IO_pos_BAD, 0, 0, { 0 }, 0, _IO_pos_BAD, \
917 /* VTABLE_LABEL defines NAME as of the CLASS class.
918 CNLENGTH is strlen(#CLASS). */
920 # if _G_VTABLE_LABEL_HAS_LENGTH
921 # define VTABLE_LABEL(NAME, CLASS, CNLENGTH) \
922 extern char NAME[] asm (_G_VTABLE_LABEL_PREFIX #CNLENGTH #CLASS);
924 # define VTABLE_LABEL(NAME, CLASS, CNLENGTH) \
925 extern char NAME[] asm (_G_VTABLE_LABEL_PREFIX #CLASS);
927 #endif /* __GNUC__ */
929 #if !defined(builtinbuf_vtable) && defined(__cplusplus)
931 VTABLE_LABEL(builtinbuf_vtable
, builtinbuf
, 10)
933 # if _G_VTABLE_LABEL_HAS_LENGTH
934 # define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##10builtinbuf
936 # define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##builtinbuf
939 #endif /* !defined(builtinbuf_vtable) && defined(__cplusplus) */
941 #if defined(__STDC__) || defined(__cplusplus)
942 # define _IO_va_start(args, last) va_start(args, last)
944 # define _IO_va_start(args, last) va_start(args)
947 extern struct _IO_fake_stdiobuf _IO_stdin_buf
, _IO_stdout_buf
, _IO_stderr_buf
;
950 # define COERCE_FILE(FILE) /* Nothing */
952 /* This is part of the kludge for binary compatibility with old stdio. */
953 # define COERCE_FILE(FILE) \
954 (((FILE)->_IO_file_flags & _IO_MAGIC_MASK) == _OLD_MAGIC_MASK \
955 && (FILE) = *(FILE**)&((int*)fp)[1])
959 # define MAYBE_SET_EINVAL __set_errno (EINVAL)
961 # define MAYBE_SET_EINVAL /* nothing */
965 # define CHECK_FILE(FILE, RET) \
966 if ((FILE) == NULL) { MAYBE_SET_EINVAL; return RET; } \
967 else { COERCE_FILE(FILE); \
968 if (((FILE)->_IO_file_flags & _IO_MAGIC_MASK) != _IO_MAGIC) \
969 { MAYBE_SET_EINVAL; return RET; }}
971 # define CHECK_FILE(FILE, RET) COERCE_FILE (FILE)
975 __attribute__ ((__always_inline__
))
976 _IO_acquire_lock_fct (_IO_FILE
**p
)
979 if ((fp
->_flags
& _IO_USER_LOCK
) == 0)
980 _IO_funlockfile (fp
);