1 /* Copyright (C) 1993, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
2 This file is part of the GNU IO Library.
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License as
6 published by the Free Software Foundation; either version 2, or (at
7 your option) any later version.
9 This library is distributed in the hope that it will be useful, but
10 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this library; see the file COPYING. If not, write to
16 the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
19 As a special exception, if you link this library with files
20 compiled with a GNU compiler to produce an executable, this does
21 not cause the resulting executable to be covered by the GNU General
22 Public License. This exception does not however invalidate any
23 other reasons why the executable file might be covered by the GNU
24 General Public License. */
29 # define __set_errno(Val) errno = (Val)
31 #if defined __GLIBC__ && __GLIBC__ >= 2
32 # include <bits/libc-lock.h>
34 /*# include <comthread.h>*/
43 #define _IO_seek_set 0
44 #define _IO_seek_cur 1
45 #define _IO_seek_end 2
47 /* THE JUMPTABLE FUNCTIONS.
49 * The _IO_FILE type is used to implement the FILE type in GNU libc,
50 * as well as the streambuf class in GNU iostreams for C++.
51 * These are all the same, just used differently.
52 * An _IO_FILE (or FILE) object is allows followed by a pointer to
53 * a jump table (of pointers to functions). The pointer is accessed
54 * with the _IO_JUMPS macro. The jump table has a eccentric format,
55 * so as to be compatible with the layout of a C++ virtual function table.
56 * (as implemented by g++). When a pointer to a streambuf object is
57 * coerced to an (_IO_FILE*), then _IO_JUMPS on the result just
58 * happens to point to the virtual function table of the streambuf.
59 * Thus the _IO_JUMPS function table used for C stdio/libio does
60 * double duty as the virtual function table for C++ streambuf.
62 * The entries in the _IO_JUMPS function table (and hence also the
63 * virtual functions of a streambuf) are described below.
64 * The first parameter of each function entry is the _IO_FILE/streambuf
65 * object being acted on (i.e. the 'this' parameter).
68 #if (!defined _IO_USE_OLD_IO_FILE \
69 && (!defined _G_IO_NO_BACKWARD_COMPAT || _G_IO_NO_BACKWARD_COMPAT == 0))
70 # define _IO_JUMPS_OFFSET 1
73 #define _IO_JUMPS(THIS) (THIS)->vtable
74 #define _IO_WIDE_JUMPS(THIS) ((struct _IO_FILE *) (THIS))->_wide_data->_wide_vtable
75 #define _IO_CHECK_WIDE(THIS) (((struct _IO_FILE *) (THIS))->_wide_data != NULL)
78 # define _IO_JUMPS_FUNC(THIS) \
79 (*(struct _IO_jump_t **) ((void *) &_IO_JUMPS ((struct _IO_FILE_plus *) (THIS)) \
80 + (THIS)->_vtable_offset))
82 # define _IO_JUMPS_FUNC(THIS) _IO_JUMPS ((struct _IO_FILE_plus *) (THIS))
84 #define _IO_WIDE_JUMPS_FUNC(THIS) _IO_WIDE_JUMPS(THIS)
86 # define JUMP_FIELD(TYPE, NAME) TYPE NAME
87 # define JUMP0(FUNC, THIS) _IO_JUMPS_FUNC(THIS)->FUNC (THIS)
88 # define JUMP1(FUNC, THIS, X1) _IO_JUMPS_FUNC(THIS)->FUNC (THIS, X1)
89 # define JUMP2(FUNC, THIS, X1, X2) _IO_JUMPS_FUNC(THIS)->FUNC (THIS, X1, X2)
90 # define JUMP3(FUNC, THIS, X1,X2,X3) _IO_JUMPS_FUNC(THIS)->FUNC (THIS, X1,X2, X3)
91 # define JUMP_INIT(NAME, VALUE) VALUE
92 # define JUMP_INIT_DUMMY JUMP_INIT(dummy, 0), JUMP_INIT (dummy2, 0)
94 # define WJUMP0(FUNC, THIS) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC (THIS)
95 # define WJUMP1(FUNC, THIS, X1) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC (THIS, X1)
96 # define WJUMP2(FUNC, THIS, X1, X2) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC (THIS, X1, X2)
97 # define WJUMP3(FUNC, THIS, X1,X2,X3) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC (THIS, X1,X2, X3)
99 /* These macros will change when we re-implement vtables to use "thunks"! */
100 # define JUMP_FIELD(TYPE, NAME) struct { short delta1, delta2; TYPE pfn; } NAME
101 # define JUMP0(FUNC, THIS) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS)
102 # define JUMP1(FUNC, THIS, X1) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1)
103 # define JUMP2(FUNC, THIS, X1, X2) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1, X2)
104 # define JUMP3(FUNC, THIS, X1,X2,X3) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1,X2,X3)
105 # define JUMP_INIT(NAME, VALUE) {0, 0, VALUE}
106 # define JUMP_INIT_DUMMY JUMP_INIT(dummy, 0)
108 # define WJUMP0(FUNC, THIS) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS)
109 # define WJUMP1(FUNC, THIS, X1) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1)
110 # define WJUMP2(FUNC, THIS, X1, X2) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1, X2)
111 # define WJUMP3(FUNC, THIS, X1,X2,X3) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1,X2,X3)
114 /* The 'finish' function does any final cleaning up of an _IO_FILE object.
115 It does not delete (free) it, but does everything else to finalize it.
116 It matches the streambuf::~streambuf virtual destructor. */
117 typedef void (*_IO_finish_t
) __PMT ((_IO_FILE
*, int)); /* finalize */
118 #define _IO_FINISH(FP) JUMP1 (__finish, FP, 0)
119 #define _IO_WFINISH(FP) WJUMP1 (__finish, FP, 0)
121 /* The 'overflow' hook flushes the buffer.
122 The second argument is a character, or EOF.
123 It matches the streambuf::overflow virtual function. */
124 typedef int (*_IO_overflow_t
) __PMT ((_IO_FILE
*, int));
125 #define _IO_OVERFLOW(FP, CH) JUMP1 (__overflow, FP, CH)
126 #define _IO_WOVERFLOW(FP, CH) WJUMP1 (__overflow, FP, CH)
128 /* The 'underflow' hook tries to fills the get buffer.
129 It returns the next character (as an unsigned char) or EOF. The next
130 character remains in the get buffer, and the get position is not changed.
131 It matches the streambuf::underflow virtual function. */
132 typedef int (*_IO_underflow_t
) __PMT ((_IO_FILE
*));
133 #define _IO_UNDERFLOW(FP) JUMP0 (__underflow, FP)
134 #define _IO_WUNDERFLOW(FP) WJUMP0 (__underflow, FP)
136 /* The 'uflow' hook returns the next character in the input stream
137 (cast to unsigned char), and increments the read position;
138 EOF is returned on failure.
139 It matches the streambuf::uflow virtual function, which is not in the
140 cfront implementation, but was added to C++ by the ANSI/ISO committee. */
141 #define _IO_UFLOW(FP) JUMP0 (__uflow, FP)
142 #define _IO_WUFLOW(FP) WJUMP0 (__uflow, FP)
144 /* The 'pbackfail' hook handles backing up.
145 It matches the streambuf::pbackfail virtual function. */
146 typedef int (*_IO_pbackfail_t
) __PMT ((_IO_FILE
*, int));
147 #define _IO_PBACKFAIL(FP, CH) JUMP1 (__pbackfail, FP, CH)
148 #define _IO_WPBACKFAIL(FP, CH) WJUMP1 (__pbackfail, FP, CH)
150 /* The 'xsputn' hook writes upto N characters from buffer DATA.
151 Returns the number of character actually written.
152 It matches the streambuf::xsputn virtual function. */
153 typedef _IO_size_t (*_IO_xsputn_t
) __PMT ((_IO_FILE
*FP
, const void *DATA
,
155 #define _IO_XSPUTN(FP, DATA, N) JUMP2 (__xsputn, FP, DATA, N)
156 #define _IO_WXSPUTN(FP, DATA, N) WJUMP2 (__xsputn, FP, DATA, N)
158 /* The 'xsgetn' hook reads upto N characters into buffer DATA.
159 Returns the number of character actually read.
160 It matches the streambuf::xsgetn virtual function. */
161 typedef _IO_size_t (*_IO_xsgetn_t
) __PMT ((_IO_FILE
*FP
, void *DATA
,
163 #define _IO_XSGETN(FP, DATA, N) JUMP2 (__xsgetn, FP, DATA, N)
164 #define _IO_WXSGETN(FP, DATA, N) WJUMP2 (__xsgetn, FP, DATA, N)
166 /* The 'seekoff' hook moves the stream position to a new position
167 relative to the start of the file (if DIR==0), the current position
168 (MODE==1), or the end of the file (MODE==2).
169 It matches the streambuf::seekoff virtual function.
170 It is also used for the ANSI fseek function. */
171 typedef _IO_off64_t (*_IO_seekoff_t
) __PMT ((_IO_FILE
*FP
, _IO_off64_t OFF
,
173 #define _IO_SEEKOFF(FP, OFF, DIR, MODE) JUMP3 (__seekoff, FP, OFF, DIR, MODE)
174 #define _IO_WSEEKOFF(FP, OFF, DIR, MODE) WJUMP3 (__seekoff, FP, OFF, DIR, MODE)
176 /* The 'seekpos' hook also moves the stream position,
177 but to an absolute position given by a fpos64_t (seekpos).
178 It matches the streambuf::seekpos virtual function.
179 It is also used for the ANSI fgetpos and fsetpos functions. */
180 /* The _IO_seek_cur and _IO_seek_end options are not allowed. */
181 typedef _IO_off64_t (*_IO_seekpos_t
) __PMT ((_IO_FILE
*, _IO_off64_t
, int));
182 #define _IO_SEEKPOS(FP, POS, FLAGS) JUMP2 (__seekpos, FP, POS, FLAGS)
183 #define _IO_WSEEKPOS(FP, POS, FLAGS) WJUMP2 (__seekpos, FP, POS, FLAGS)
185 /* The 'setbuf' hook gives a buffer to the file.
186 It matches the streambuf::setbuf virtual function. */
187 typedef _IO_FILE
* (*_IO_setbuf_t
) __PMT ((_IO_FILE
*, char *, _IO_ssize_t
));
188 #define _IO_SETBUF(FP, BUFFER, LENGTH) JUMP2 (__setbuf, FP, BUFFER, LENGTH)
189 #define _IO_WSETBUF(FP, BUFFER, LENGTH) WJUMP2 (__setbuf, FP, BUFFER, LENGTH)
191 /* The 'sync' hook attempts to synchronize the internal data structures
192 of the file with the external state.
193 It matches the streambuf::sync virtual function. */
194 typedef int (*_IO_sync_t
) __PMT ((_IO_FILE
*));
195 #define _IO_SYNC(FP) JUMP0 (__sync, FP)
196 #define _IO_WSYNC(FP) WJUMP0 (__sync, FP)
198 /* The 'doallocate' hook is used to tell the file to allocate a buffer.
199 It matches the streambuf::doallocate virtual function, which is not
200 in the ANSI/ISO C++ standard, but is part traditional implementations. */
201 typedef int (*_IO_doallocate_t
) __PMT ((_IO_FILE
*));
202 #define _IO_DOALLOCATE(FP) JUMP0 (__doallocate, FP)
203 #define _IO_WDOALLOCATE(FP) WJUMP0 (__doallocate, FP)
205 /* The following four hooks (sysread, syswrite, sysclose, sysseek, and
206 sysstat) are low-level hooks specific to this implementation.
207 There is no correspondence in the ANSI/ISO C++ standard library.
208 The hooks basically correspond to the Unix system functions
209 (read, write, close, lseek, and stat) except that a _IO_FILE*
210 parameter is used instead of a integer file descriptor; the default
211 implementation used for normal files just calls those functions.
212 The advantage of overriding these functions instead of the higher-level
213 ones (underflow, overflow etc) is that you can leave all the buffering
214 higher-level functions. */
216 /* The 'sysread' hook is used to read data from the external file into
217 an existing buffer. It generalizes the Unix read(2) function.
218 It matches the streambuf::sys_read virtual function, which is
219 specific to this implementation. */
220 typedef _IO_ssize_t (*_IO_read_t
) __PMT ((_IO_FILE
*, void *, _IO_ssize_t
));
221 #define _IO_SYSREAD(FP, DATA, LEN) JUMP2 (__read, FP, DATA, LEN)
222 #define _IO_WSYSREAD(FP, DATA, LEN) WJUMP2 (__read, FP, DATA, LEN)
224 /* The 'syswrite' hook is used to write data from an existing buffer
225 to an external file. It generalizes the Unix write(2) function.
226 It matches the streambuf::sys_write virtual function, which is
227 specific to this implementation. */
228 typedef _IO_ssize_t (*_IO_write_t
) __PMT ((_IO_FILE
*, const void *,
230 #define _IO_SYSWRITE(FP, DATA, LEN) JUMP2 (__write, FP, DATA, LEN)
231 #define _IO_WSYSWRITE(FP, DATA, LEN) WJUMP2 (__write, FP, DATA, LEN)
233 /* The 'sysseek' hook is used to re-position an external file.
234 It generalizes the Unix lseek(2) function.
235 It matches the streambuf::sys_seek virtual function, which is
236 specific to this implementation. */
237 typedef _IO_off64_t (*_IO_seek_t
) __PMT ((_IO_FILE
*, _IO_off64_t
, int));
238 #define _IO_SYSSEEK(FP, OFFSET, MODE) JUMP2 (__seek, FP, OFFSET, MODE)
239 #define _IO_WSYSSEEK(FP, OFFSET, MODE) WJUMP2 (__seek, FP, OFFSET, MODE)
241 /* The 'sysclose' hook is used to finalize (close, finish up) an
242 external file. It generalizes the Unix close(2) function.
243 It matches the streambuf::sys_close virtual function, which is
244 specific to this implementation. */
245 typedef int (*_IO_close_t
) __PMT ((_IO_FILE
*)); /* finalize */
246 #define _IO_SYSCLOSE(FP) JUMP0 (__close, FP)
247 #define _IO_WSYSCLOSE(FP) WJUMP0 (__close, FP)
249 /* The 'sysstat' hook is used to get information about an external file
250 into a struct stat buffer. It generalizes the Unix fstat(2) call.
251 It matches the streambuf::sys_stat virtual function, which is
252 specific to this implementation. */
253 typedef int (*_IO_stat_t
) __PMT ((_IO_FILE
*, void *));
254 #define _IO_SYSSTAT(FP, BUF) JUMP1 (__stat, FP, BUF)
255 #define _IO_WSYSSTAT(FP, BUF) WJUMP1 (__stat, FP, BUF)
257 /* The 'showmany' hook can be used to get an image how much input is
258 available. In many cases the answer will be 0 which means unknown
259 but some cases one can provide real information. */
260 typedef int (*_IO_showmanyc_t
) __PMT ((_IO_FILE
*));
261 #define _IO_SHOWMANYC(FP) JUMP0 (__showmanyc, FP)
262 #define _IO_WSHOWMANYC(FP) WJUMP0 (__showmanyc, FP)
264 /* The 'imbue' hook is used to get information about the currently
265 installed locales. */
266 typedef void (*_IO_imbue_t
) __PMT ((_IO_FILE
*, void *));
267 #define _IO_IMBUE(FP, LOCALE) JUMP1 (__imbue, FP, LOCALE)
268 #define _IO_WIMBUE(FP, LOCALE) WJUMP1 (__imbue, FP, LOCALE)
271 #define _IO_CHAR_TYPE char /* unsigned char ? */
272 #define _IO_INT_TYPE int
276 JUMP_FIELD(_G_size_t
, __dummy
);
278 JUMP_FIELD(_G_size_t
, __dummy2
);
280 JUMP_FIELD(_IO_finish_t
, __finish
);
281 JUMP_FIELD(_IO_overflow_t
, __overflow
);
282 JUMP_FIELD(_IO_underflow_t
, __underflow
);
283 JUMP_FIELD(_IO_underflow_t
, __uflow
);
284 JUMP_FIELD(_IO_pbackfail_t
, __pbackfail
);
286 JUMP_FIELD(_IO_xsputn_t
, __xsputn
);
287 JUMP_FIELD(_IO_xsgetn_t
, __xsgetn
);
288 JUMP_FIELD(_IO_seekoff_t
, __seekoff
);
289 JUMP_FIELD(_IO_seekpos_t
, __seekpos
);
290 JUMP_FIELD(_IO_setbuf_t
, __setbuf
);
291 JUMP_FIELD(_IO_sync_t
, __sync
);
292 JUMP_FIELD(_IO_doallocate_t
, __doallocate
);
293 JUMP_FIELD(_IO_read_t
, __read
);
294 JUMP_FIELD(_IO_write_t
, __write
);
295 JUMP_FIELD(_IO_seek_t
, __seek
);
296 JUMP_FIELD(_IO_close_t
, __close
);
297 JUMP_FIELD(_IO_stat_t
, __stat
);
298 JUMP_FIELD(_IO_showmanyc_t
, __showmanyc
);
299 JUMP_FIELD(_IO_imbue_t
, __imbue
);
306 /* We always allocate an extra word following an _IO_FILE.
307 This contains a pointer to the function jump table used.
308 This is for compatibility with C++ streambuf; the word can
309 be used to smash to a pointer to a virtual function table. */
314 const struct _IO_jump_t
*vtable
;
317 /* Special file type for fopencookie function. */
318 struct _IO_cookie_file
320 struct _IO_FILE_plus __fp
;
322 _IO_cookie_io_functions_t __io_functions
;
325 /* Iterator type for walking global linked list of _IO_FILE objects. */
327 typedef struct _IO_FILE
*_IO_ITER
;
329 /* Generic functions */
331 extern void _IO_switch_to_main_get_area
__P ((_IO_FILE
*));
332 extern void _IO_switch_to_backup_area
__P ((_IO_FILE
*));
333 extern int _IO_switch_to_get_mode
__P ((_IO_FILE
*));
334 extern void _IO_init
__P ((_IO_FILE
*, int));
335 extern int _IO_sputbackc
__P ((_IO_FILE
*, int));
336 extern int _IO_sungetc
__P ((_IO_FILE
*));
337 extern void _IO_un_link
__P ((struct _IO_FILE_plus
*));
338 extern void _IO_link_in
__P ((struct _IO_FILE_plus
*));
339 extern void _IO_doallocbuf
__P ((_IO_FILE
*));
340 extern void _IO_unsave_markers
__P ((_IO_FILE
*));
341 extern void _IO_setb
__P ((_IO_FILE
*, char *, char *, int));
342 extern unsigned _IO_adjust_column
__P ((unsigned, const char *, int));
343 #define _IO_sputn(__fp, __s, __n) _IO_XSPUTN (__fp, __s, __n)
345 extern void _IO_switch_to_main_wget_area
__P ((_IO_FILE
*));
346 extern void _IO_switch_to_wbackup_area
__P ((_IO_FILE
*));
347 extern int _IO_switch_to_wget_mode
__P ((_IO_FILE
*));
348 extern void _IO_wsetb
__P ((_IO_FILE
*, wchar_t *, wchar_t *, int));
349 extern wint_t _IO_sputbackwc
__P ((_IO_FILE
*, wint_t));
350 extern wint_t _IO_sungetwc
__P ((_IO_FILE
*));
351 extern void _IO_wdoallocbuf
__P ((_IO_FILE
*));
352 extern void _IO_unsave_wmarkers
__P ((_IO_FILE
*));
353 extern unsigned _IO_adjust_wcolumn
__P ((unsigned, const wchar_t *, int));
355 /* Marker-related function. */
357 extern void _IO_init_marker
__P ((struct _IO_marker
*, _IO_FILE
*));
358 extern void _IO_init_wmarker
__P ((struct _IO_marker
*, _IO_FILE
*));
359 extern void _IO_remove_marker
__P ((struct _IO_marker
*));
360 extern int _IO_marker_difference
__P ((struct _IO_marker
*,
361 struct _IO_marker
*));
362 extern int _IO_marker_delta
__P ((struct _IO_marker
*));
363 extern int _IO_wmarker_delta
__P ((struct _IO_marker
*));
364 extern int _IO_seekmark
__P ((_IO_FILE
*, struct _IO_marker
*, int));
365 extern int _IO_seekwmark
__P ((_IO_FILE
*, struct _IO_marker
*, int));
367 /* Functions for iterating global list and dealing with
370 extern _IO_ITER _IO_iter_begin
__P ((void));
371 extern _IO_ITER _IO_iter_end
__P ((void));
372 extern _IO_ITER _IO_iter_next
__P ((_IO_ITER
));
373 extern _IO_FILE
*_IO_iter_file
__P ((_IO_ITER
));
374 extern void _IO_list_lock
__P ((void));
375 extern void _IO_list_unlock
__P ((void));
376 extern void _IO_list_resetlock
__P ((void));
378 /* Default jumptable functions. */
380 extern int _IO_default_underflow
__P ((_IO_FILE
*));
381 extern int _IO_default_uflow
__P ((_IO_FILE
*));
382 extern wint_t _IO_wdefault_uflow
__P ((_IO_FILE
*));
383 extern int _IO_default_doallocate
__P ((_IO_FILE
*));
384 extern int _IO_wdefault_doallocate
__P ((_IO_FILE
*));
385 extern void _IO_default_finish
__P ((_IO_FILE
*, int));
386 extern void _IO_wdefault_finish
__P ((_IO_FILE
*, int));
387 extern int _IO_default_pbackfail
__P ((_IO_FILE
*, int));
388 extern wint_t _IO_wdefault_pbackfail
__P ((_IO_FILE
*, wint_t));
389 extern _IO_FILE
* _IO_default_setbuf
__P ((_IO_FILE
*, char *, _IO_ssize_t
));
390 extern _IO_FILE
* _IO_wdefault_setbuf
__P ((_IO_FILE
*, wchar_t *,
392 extern _IO_size_t _IO_default_xsputn
__P ((_IO_FILE
*, const void *,
394 extern _IO_size_t _IO_wdefault_xsputn
__P ((_IO_FILE
*, const void *,
396 extern _IO_size_t _IO_default_xsgetn
__P ((_IO_FILE
*, void *, _IO_size_t
));
397 extern _IO_size_t _IO_wdefault_xsgetn
__P ((_IO_FILE
*, void *, _IO_size_t
));
398 extern _IO_off64_t _IO_default_seekoff
__P ((_IO_FILE
*,
399 _IO_off64_t
, int, int));
400 extern _IO_off64_t _IO_default_seekpos
__P ((_IO_FILE
*, _IO_off64_t
, int));
401 extern _IO_ssize_t _IO_default_write
__P ((_IO_FILE
*, const void *,
403 extern _IO_ssize_t _IO_default_read
__P ((_IO_FILE
*, void *, _IO_ssize_t
));
404 extern int _IO_default_stat
__P ((_IO_FILE
*, void *));
405 extern _IO_off64_t _IO_default_seek
__P ((_IO_FILE
*, _IO_off64_t
, int));
406 extern int _IO_default_sync
__P ((_IO_FILE
*));
407 #define _IO_default_close ((_IO_close_t) _IO_default_sync)
408 extern int _IO_default_showmanyc
__P ((_IO_FILE
*));
409 extern void _IO_default_imbue
__P ((_IO_FILE
*, void *));
411 extern struct _IO_jump_t _IO_file_jumps
;
412 extern struct _IO_jump_t _IO_wfile_jumps
;
413 extern struct _IO_jump_t _IO_old_file_jumps
;
414 extern struct _IO_jump_t _IO_streambuf_jumps
;
415 extern struct _IO_jump_t _IO_proc_jumps
;
416 extern struct _IO_jump_t _IO_old_proc_jumps
;
417 extern struct _IO_jump_t _IO_str_jumps
;
418 extern struct _IO_jump_t _IO_wstr_jumps
;
419 extern struct _IO_codecvt __libio_codecvt
;
420 extern int _IO_do_write
__P ((_IO_FILE
*, const char *, _IO_size_t
));
421 extern int _IO_new_do_write
__P ((_IO_FILE
*, const char *, _IO_size_t
));
422 extern int _IO_old_do_write
__P ((_IO_FILE
*, const char *, _IO_size_t
));
423 extern int _IO_wdo_write
__P ((_IO_FILE
*, const wchar_t *, _IO_size_t
));
424 extern int _IO_flush_all
__P ((void));
425 extern int _IO_cleanup
__P ((void));
426 extern void _IO_flush_all_linebuffered
__P ((void));
427 extern int _IO_new_fgetpos
__P ((_IO_FILE
*, _IO_fpos_t
*));
428 extern int _IO_old_fgetpos
__P ((_IO_FILE
*, _IO_fpos_t
*));
429 extern int _IO_new_fsetpos
__P ((_IO_FILE
*, const _IO_fpos_t
*));
430 extern int _IO_old_fsetpos
__P ((_IO_FILE
*, const _IO_fpos_t
*));
431 extern int _IO_new_fgetpos64
__P ((_IO_FILE
*, _IO_fpos64_t
*));
432 extern int _IO_old_fgetpos64
__P ((_IO_FILE
*, _IO_fpos64_t
*));
433 extern int _IO_new_fsetpos64
__P ((_IO_FILE
*, const _IO_fpos64_t
*));
434 extern int _IO_old_fsetpos64
__P ((_IO_FILE
*, const _IO_fpos64_t
*));
437 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
438 # define _IO_do_flush(_f) \
440 ? _IO_do_write(_f, (_f)->_IO_write_base, \
441 (_f)->_IO_write_ptr-(_f)->_IO_write_base) \
442 : _IO_wdo_write(_f, (_f)->_wide_data->_IO_write_base, \
443 ((_f)->_wide_data->_IO_write_ptr \
444 - (_f)->_wide_data->_IO_write_base)))
446 # define _IO_do_flush(_f) \
447 _IO_do_write(_f, (_f)->_IO_write_base, \
448 (_f)->_IO_write_ptr-(_f)->_IO_write_base)
450 #define _IO_old_do_flush(_f) \
451 _IO_old_do_write(_f, (_f)->_IO_write_base, \
452 (_f)->_IO_write_ptr-(_f)->_IO_write_base)
453 #define _IO_in_put_mode(_fp) ((_fp)->_flags & _IO_CURRENTLY_PUTTING)
454 #define _IO_mask_flags(fp, f, mask) \
455 ((fp)->_flags = ((fp)->_flags & ~(mask)) | ((f) & (mask)))
456 #define _IO_setg(fp, eb, g, eg) ((fp)->_IO_read_base = (eb),\
457 (fp)->_IO_read_ptr = (g), (fp)->_IO_read_end = (eg))
458 #define _IO_wsetg(fp, eb, g, eg) ((fp)->_wide_data->_IO_read_base = (eb),\
459 (fp)->_wide_data->_IO_read_ptr = (g), \
460 (fp)->_wide_data->_IO_read_end = (eg))
461 #define _IO_setp(__fp, __p, __ep) \
462 ((__fp)->_IO_write_base = (__fp)->_IO_write_ptr \
463 = __p, (__fp)->_IO_write_end = (__ep))
464 #define _IO_wsetp(__fp, __p, __ep) \
465 ((__fp)->_wide_data->_IO_write_base \
466 = (__fp)->_wide_data->_IO_write_ptr = __p, \
467 (__fp)->_wide_data->_IO_write_end = (__ep))
468 #define _IO_have_backup(fp) ((fp)->_IO_save_base != NULL)
469 #define _IO_have_wbackup(fp) ((fp)->_wide_data->_IO_save_base != NULL)
470 #define _IO_in_backup(fp) ((fp)->_flags & _IO_IN_BACKUP)
471 #define _IO_have_markers(fp) ((fp)->_markers != NULL)
472 #define _IO_blen(fp) ((fp)->_IO_buf_end - (fp)->_IO_buf_base)
473 #define _IO_wblen(fp) ((fp)->_wide_data->_IO_buf_end \
474 - (fp)->_wide_data->_IO_buf_base)
476 /* Jumptable functions for files. */
478 extern int _IO_file_doallocate
__P ((_IO_FILE
*));
479 extern _IO_FILE
* _IO_file_setbuf
__P ((_IO_FILE
*, char *, _IO_ssize_t
));
480 extern _IO_off64_t _IO_file_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int, int));
481 extern _IO_size_t _IO_file_xsputn
__P ((_IO_FILE
*, const void *, _IO_size_t
));
482 extern _IO_size_t _IO_file_xsgetn
__P ((_IO_FILE
*, void *, _IO_size_t
));
483 extern int _IO_file_stat
__P ((_IO_FILE
*, void *));
484 extern int _IO_file_close
__P ((_IO_FILE
*));
485 extern int _IO_file_underflow
__P ((_IO_FILE
*));
486 extern int _IO_file_overflow
__P ((_IO_FILE
*, int));
487 #define _IO_file_is_open(__fp) ((__fp)->_fileno != -1)
488 extern void _IO_file_init
__P ((struct _IO_FILE_plus
*));
489 extern _IO_FILE
* _IO_file_attach
__P ((_IO_FILE
*, int));
490 extern _IO_FILE
* _IO_file_open
__P ((_IO_FILE
*, const char *, int, int,
492 extern _IO_FILE
* _IO_file_fopen
__P ((_IO_FILE
*, const char *, const char *,
494 extern _IO_ssize_t _IO_file_write
__P ((_IO_FILE
*, const void *,
496 extern _IO_ssize_t _IO_file_read
__P ((_IO_FILE
*, void *, _IO_ssize_t
));
497 extern int _IO_file_sync
__P ((_IO_FILE
*));
498 extern int _IO_file_close_it
__P ((_IO_FILE
*));
499 extern _IO_off64_t _IO_file_seek
__P ((_IO_FILE
*, _IO_off64_t
, int));
500 extern void _IO_file_finish
__P ((_IO_FILE
*, int));
502 extern _IO_FILE
* _IO_new_file_attach
__P ((_IO_FILE
*, int));
503 extern int _IO_new_file_close_it
__P ((_IO_FILE
*));
504 extern void _IO_new_file_finish
__P ((_IO_FILE
*, int));
505 extern _IO_FILE
* _IO_new_file_fopen
__P ((_IO_FILE
*, const char *, const char *,
507 extern void _IO_no_init
__P ((_IO_FILE
*, int, int, struct _IO_wide_data
*,
508 struct _IO_jump_t
*));
509 extern void _IO_new_file_init
__P ((struct _IO_FILE_plus
*));
510 extern _IO_FILE
* _IO_new_file_setbuf
__P ((_IO_FILE
*, char *, _IO_ssize_t
));
511 extern int _IO_new_file_sync
__P ((_IO_FILE
*));
512 extern int _IO_new_file_underflow
__P ((_IO_FILE
*));
513 extern int _IO_new_file_overflow
__P ((_IO_FILE
*, int));
514 extern _IO_off64_t _IO_new_file_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int, int));
515 extern _IO_ssize_t _IO_new_file_write
__P ((_IO_FILE
*, const void *,
517 extern _IO_size_t _IO_new_file_xsputn
__P ((_IO_FILE
*, const void *, _IO_size_t
));
519 extern _IO_FILE
* _IO_old_file_setbuf
__P ((_IO_FILE
*, char *, _IO_ssize_t
));
520 extern _IO_off64_t _IO_old_file_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int,
522 extern _IO_size_t _IO_old_file_xsputn
__P ((_IO_FILE
*, const void *,
524 extern int _IO_old_file_underflow
__P ((_IO_FILE
*));
525 extern int _IO_old_file_overflow
__P ((_IO_FILE
*, int));
526 extern void _IO_old_file_init
__P ((struct _IO_FILE_plus
*));
527 extern _IO_FILE
* _IO_old_file_attach
__P ((_IO_FILE
*, int));
528 extern _IO_FILE
* _IO_old_file_fopen
__P ((_IO_FILE
*, const char *,
530 extern _IO_ssize_t _IO_old_file_write
__P ((_IO_FILE
*, const void *,
532 extern int _IO_old_file_sync
__P ((_IO_FILE
*));
533 extern int _IO_old_file_close_it
__P ((_IO_FILE
*));
534 extern void _IO_old_file_finish
__P ((_IO_FILE
*, int));
536 extern int _IO_wfile_doallocate
__P ((_IO_FILE
*));
537 extern _IO_size_t _IO_wfile_xsputn
__P ((_IO_FILE
*, const void *,
539 extern _IO_FILE
* _IO_wfile_setbuf
__P ((_IO_FILE
*, wchar_t *, _IO_ssize_t
));
540 extern wint_t _IO_wfile_sync
__P ((_IO_FILE
*));
541 extern wint_t _IO_wfile_underflow
__P ((_IO_FILE
*));
542 extern wint_t _IO_wfile_overflow
__P ((_IO_FILE
*, wint_t));
543 extern _IO_off64_t _IO_wfile_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int, int));
545 /* Jumptable functions for proc_files. */
546 extern _IO_FILE
* _IO_proc_open
__P ((_IO_FILE
*, const char *, const char *));
547 extern _IO_FILE
* _IO_new_proc_open
__P ((_IO_FILE
*, const char *, const char *));
548 extern _IO_FILE
* _IO_old_proc_open
__P ((_IO_FILE
*, const char *, const char *));
549 extern int _IO_proc_close
__P ((_IO_FILE
*));
550 extern int _IO_new_proc_close
__P ((_IO_FILE
*));
551 extern int _IO_old_proc_close
__P ((_IO_FILE
*));
553 /* Jumptable functions for strfiles. */
554 extern int _IO_str_underflow
__P ((_IO_FILE
*));
555 extern int _IO_str_overflow
__P ((_IO_FILE
*, int));
556 extern int _IO_str_pbackfail
__P ((_IO_FILE
*, int));
557 extern _IO_off64_t _IO_str_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int, int));
558 extern void _IO_str_finish
__P ((_IO_FILE
*, int));
560 /* Other strfile functions */
562 extern void _IO_str_init_static
__P ((struct _IO_strfile_
*, char *, int, char *));
563 extern void _IO_str_init_readonly
__P ((struct _IO_strfile_
*, const char *, int));
564 extern _IO_ssize_t _IO_str_count
__P ((_IO_FILE
*));
566 /* And the wide character versions. */
567 extern void _IO_wstr_init_static
__P ((_IO_FILE
*, wchar_t *, int, wchar_t *));
568 extern void _IO_wstr_init_readonly
__P ((_IO_FILE
*, const char *, int));
569 extern _IO_ssize_t _IO_wstr_count
__P ((_IO_FILE
*));
570 extern _IO_wint_t _IO_wstr_overflow
__P ((_IO_FILE
*, _IO_wint_t
));
571 extern _IO_wint_t _IO_wstr_underflow
__P ((_IO_FILE
*));
572 extern _IO_off64_t _IO_wstr_seekoff
__P ((_IO_FILE
*, _IO_off64_t
, int, int));
573 extern _IO_wint_t _IO_wstr_pbackfail
__P ((_IO_FILE
*, _IO_wint_t
));
574 extern void _IO_wstr_finish
__P ((_IO_FILE
*, int));
576 extern int _IO_vasprintf
__P ((char **result_ptr
, __const
char *format
,
578 extern int _IO_vdprintf
__P ((int d
, __const
char *format
, _IO_va_list arg
));
579 extern int _IO_vsnprintf
__P ((char *string
, _IO_size_t maxlen
,
580 __const
char *format
, _IO_va_list args
));
583 extern _IO_size_t _IO_getline
__P ((_IO_FILE
*,char *, _IO_size_t
, int, int));
584 extern _IO_size_t _IO_getline_info
__P ((_IO_FILE
*,char *, _IO_size_t
,
586 extern _IO_ssize_t _IO_getdelim
__P ((char **, _IO_size_t
*, int, _IO_FILE
*));
587 extern _IO_size_t _IO_getwline
__P ((_IO_FILE
*,wchar_t *, _IO_size_t
, wint_t,
589 extern _IO_size_t _IO_getwline_info
__P ((_IO_FILE
*,wchar_t *, _IO_size_t
,
590 wint_t, int, wint_t *));
591 extern double _IO_strtod
__P ((const char *, char **));
592 extern char *_IO_dtoa
__P ((double __d
, int __mode
, int __ndigits
,
593 int *__decpt
, int *__sign
, char **__rve
));
594 extern int _IO_outfloat
__P ((double __value
, _IO_FILE
*__sb
, int __type
,
595 int __width
, int __precision
, int __flags
,
596 int __sign_mode
, int __fill
));
598 extern struct _IO_FILE_plus
*_IO_list_all
;
599 extern void (*_IO_cleanup_registration_needed
) __PMT ((void));
605 # if defined __GNUG__ && \
606 (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
607 # define NULL (__null)
609 # if !defined(__cplusplus)
610 # define NULL ((void*)0)
625 # include <sys/mman.h>
626 # include <sys/param.h>
632 # if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
633 # define MAP_ANONYMOUS MAP_ANON
636 # if !defined(MAP_ANONYMOUS) || !defined(EXEC_PAGESIZE)
638 # define _G_HAVE_MMAP 0
641 #endif /* _G_HAVE_MMAP */
646 /* When using this code in the GNU libc we must not pollute the name space. */
648 # define munmap __munmap
649 # define ftruncate __ftruncate
652 # define ROUND_TO_PAGE(_S) \
653 (((_S) + EXEC_PAGESIZE - 1) & ~(EXEC_PAGESIZE - 1))
655 # define FREE_BUF(_B, _S) \
656 munmap ((_B), ROUND_TO_PAGE (_S))
657 # define ALLOC_BUF(_B, _S, _R) \
659 (_B) = (char *) mmap (0, ROUND_TO_PAGE (_S), \
660 PROT_READ | PROT_WRITE, \
661 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); \
662 if ((_B) == (char *) MAP_FAILED) \
665 # define ALLOC_WBUF(_B, _S, _R) \
667 (_B) = (wchar_t *) mmap (0, ROUND_TO_PAGE (_S), \
668 PROT_READ | PROT_WRITE, \
669 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); \
670 if ((_B) == (wchar_t *) MAP_FAILED) \
674 #else /* _G_HAVE_MMAP */
676 # define FREE_BUF(_B, _S) \
678 # define ALLOC_BUF(_B, _S, _R) \
680 (_B) = (char*)malloc(_S); \
684 # define ALLOC_WBUF(_B, _S, _R) \
686 (_B) = (wchar_t *)malloc(_S); \
691 #endif /* _G_HAVE_MMAP */
694 # define OS_FSTAT fstat
697 extern _IO_ssize_t _IO_read
__P ((int, void *, _IO_size_t
));
698 extern _IO_ssize_t _IO_write
__P ((int, const void *, _IO_size_t
));
699 extern _IO_off64_t _IO_lseek
__P ((int, _IO_off64_t
, int));
700 extern int _IO_close
__P ((int));
701 extern int _IO_fstat
__P ((int, struct stat
*));
702 extern int _IO_vscanf
__P ((const char *, _IO_va_list
));
704 /* _IO_pos_BAD is an _IO_off64_t value indicating error, unknown, or EOF. */
706 # define _IO_pos_BAD ((_IO_off64_t) -1)
708 /* _IO_pos_adjust adjust an _IO_off64_t by some number of bytes. */
709 #ifndef _IO_pos_adjust
710 # define _IO_pos_adjust(pos, delta) ((pos) += (delta))
712 /* _IO_pos_0 is an _IO_off64_t value indicating beginning of file. */
714 # define _IO_pos_0 ((_IO_off64_t) 0)
722 /* check following! */
723 # ifdef _IO_USE_OLD_IO_FILE
724 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
725 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
726 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
727 0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock }
729 # if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
730 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
731 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
732 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
733 0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock, _IO_pos_BAD,\
736 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
737 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
738 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
739 0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock, _IO_pos_BAD,\
744 # ifdef _IO_USE_OLD_IO_FILE
745 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
746 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
747 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
750 # if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
751 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
752 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
753 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
754 0, _IO_pos_BAD, 0, 0, { 0 }, 0, _IO_pos_BAD, \
757 # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
758 { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
759 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
760 0, _IO_pos_BAD, 0, 0, { 0 }, 0, _IO_pos_BAD, \
766 /* VTABLE_LABEL defines NAME as of the CLASS class.
767 CNLENGTH is strlen(#CLASS). */
769 # if _G_VTABLE_LABEL_HAS_LENGTH
770 # define VTABLE_LABEL(NAME, CLASS, CNLENGTH) \
771 extern char NAME[] asm (_G_VTABLE_LABEL_PREFIX #CNLENGTH #CLASS);
773 # define VTABLE_LABEL(NAME, CLASS, CNLENGTH) \
774 extern char NAME[] asm (_G_VTABLE_LABEL_PREFIX #CLASS);
776 #endif /* __GNUC__ */
778 #if !defined(builtinbuf_vtable) && defined(__cplusplus)
780 VTABLE_LABEL(builtinbuf_vtable
, builtinbuf
, 10)
782 # if _G_VTABLE_LABEL_HAS_LENGTH
783 # define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##10builtinbuf
785 # define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##builtinbuf
788 #endif /* !defined(builtinbuf_vtable) && defined(__cplusplus) */
790 #if defined(__STDC__) || defined(__cplusplus)
791 # define _IO_va_start(args, last) va_start(args, last)
793 # define _IO_va_start(args, last) va_start(args)
796 extern struct _IO_fake_stdiobuf _IO_stdin_buf
, _IO_stdout_buf
, _IO_stderr_buf
;
799 # define COERCE_FILE(FILE) /* Nothing */
801 /* This is part of the kludge for binary compatibility with old stdio. */
802 # define COERCE_FILE(FILE) \
803 (((FILE)->_IO_file_flags & _IO_MAGIC_MASK) == _OLD_MAGIC_MASK \
804 && (FILE) = *(FILE**)&((int*)fp)[1])
808 # define MAYBE_SET_EINVAL __set_errno (EINVAL)
810 # define MAYBE_SET_EINVAL /* nothing */
814 # define CHECK_FILE(FILE, RET) \
815 if ((FILE) == NULL) { MAYBE_SET_EINVAL; return RET; } \
816 else { COERCE_FILE(FILE); \
817 if (((FILE)->_IO_file_flags & _IO_MAGIC_MASK) != _IO_MAGIC) \
818 { MAYBE_SET_EINVAL; return RET; }}
820 # define CHECK_FILE(FILE, RET) COERCE_FILE (FILE)