1 /* Copyright (C) 1993, 1997-2002, 2003 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 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. 8 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. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, write to the Free 16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 17 02111-1307 USA. 18 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. */ 27 28 #ifndef _LIBIO_P_H_ 29 #define _LIBIO_P_H_ 30 31 #include <errno.h> 32 #ifndef __set_errno 33 # define __set_errno(Val) errno = (Val) 34 #endif 35 #if defined __GLIBC__ && __GLIBC__ >= 2 36 # include <bits/libc-lock.h> 37 #else 38 /*# include <comthread.h>*/ 39 #endif 40 41 #include "iolibio.h" 42 43 /* Control of exported symbols. Used in glibc. By default we don't 44 do anything. */ 45 #ifndef INTUSE 46 # define INTUSE(name) name 47 #endif 48 #ifndef INTDEF 49 # define INTDEF(name) 50 #endif 51 #ifndef INTDEF2 52 # define INTDEF2(name) 53 #endif 54 #ifndef libc_hidden_proto 55 # define libc_hidden_proto(name) 56 #endif 57 #ifndef libc_hidden_def 58 # define libc_hidden_def(name) 59 #endif 60 #ifndef libc_hidden_weak 61 # define libc_hidden_weak(name) 62 #endif 63 64 #ifdef __cplusplus 65 extern "C" { 66 #endif 67 68 #define _IO_seek_set 0 69 #define _IO_seek_cur 1 70 #define _IO_seek_end 2 71 72 /* THE JUMPTABLE FUNCTIONS. 73 74 * The _IO_FILE type is used to implement the FILE type in GNU libc, 75 * as well as the streambuf class in GNU iostreams for C++. 76 * These are all the same, just used differently. 77 * An _IO_FILE (or FILE) object is allows followed by a pointer to 78 * a jump table (of pointers to functions). The pointer is accessed 79 * with the _IO_JUMPS macro. The jump table has a eccentric format, 80 * so as to be compatible with the layout of a C++ virtual function table. 81 * (as implemented by g++). When a pointer to a streambuf object is 82 * coerced to an (_IO_FILE*), then _IO_JUMPS on the result just 83 * happens to point to the virtual function table of the streambuf. 84 * Thus the _IO_JUMPS function table used for C stdio/libio does 85 * double duty as the virtual function table for C++ streambuf. 86 * 87 * The entries in the _IO_JUMPS function table (and hence also the 88 * virtual functions of a streambuf) are described below. 89 * The first parameter of each function entry is the _IO_FILE/streambuf 90 * object being acted on (i.e. the 'this' parameter). 91 */ 92 93 #ifdef _LIBC 94 # include <shlib-compat.h> 95 # if !SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1) 96 /* Setting this macro disables the use of the _vtable_offset 97 bias in _IO_JUMPS_FUNCS, below. That is only needed if we 98 want to support old binaries (see oldfileops.c). */ 99 # define _G_IO_NO_BACKWARD_COMPAT 1 100 # endif 101 #endif 102 103 #if (!defined _IO_USE_OLD_IO_FILE \ 104 && (!defined _G_IO_NO_BACKWARD_COMPAT || _G_IO_NO_BACKWARD_COMPAT == 0)) 105 # define _IO_JUMPS_OFFSET 1 106 #endif 107 108 #define _IO_JUMPS(THIS) (THIS)->vtable 109 #define _IO_WIDE_JUMPS(THIS) ((struct _IO_FILE *) (THIS))->_wide_data->_wide_vtable 110 #define _IO_CHECK_WIDE(THIS) (((struct _IO_FILE *) (THIS))->_wide_data != NULL) 111 112 #if _IO_JUMPS_OFFSET 113 # define _IO_JUMPS_FUNC(THIS) \ 114 (*(struct _IO_jump_t **) ((void *) &_IO_JUMPS ((struct _IO_FILE_plus *) (THIS)) \ 115 + (THIS)->_vtable_offset)) 116 #else 117 # define _IO_JUMPS_FUNC(THIS) _IO_JUMPS ((struct _IO_FILE_plus *) (THIS)) 118 #endif 119 #define _IO_WIDE_JUMPS_FUNC(THIS) _IO_WIDE_JUMPS(THIS) 120 #ifdef _G_USING_THUNKS 121 # define JUMP_FIELD(TYPE, NAME) TYPE NAME 122 # define JUMP0(FUNC, THIS) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS) 123 # define JUMP1(FUNC, THIS, X1) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS, X1) 124 # define JUMP2(FUNC, THIS, X1, X2) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS, X1, X2) 125 # define JUMP3(FUNC, THIS, X1,X2,X3) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS, X1,X2, X3) 126 # define JUMP_INIT(NAME, VALUE) VALUE 127 # define JUMP_INIT_DUMMY JUMP_INIT(dummy, 0), JUMP_INIT (dummy2, 0) 128 129 # define WJUMP0(FUNC, THIS) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS) 130 # define WJUMP1(FUNC, THIS, X1) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS, X1) 131 # define WJUMP2(FUNC, THIS, X1, X2) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS, X1, X2) 132 # define WJUMP3(FUNC, THIS, X1,X2,X3) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS, X1,X2, X3) 133 #else 134 /* These macros will change when we re-implement vtables to use "thunks"! */ 135 # define JUMP_FIELD(TYPE, NAME) struct { short delta1, delta2; TYPE pfn; } NAME 136 # define JUMP0(FUNC, THIS) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS) 137 # define JUMP1(FUNC, THIS, X1) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1) 138 # define JUMP2(FUNC, THIS, X1, X2) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1, X2) 139 # define JUMP3(FUNC, THIS, X1,X2,X3) _IO_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1,X2,X3) 140 # define JUMP_INIT(NAME, VALUE) {0, 0, VALUE} 141 # define JUMP_INIT_DUMMY JUMP_INIT(dummy, 0) 142 143 # define WJUMP0(FUNC, THIS) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS) 144 # define WJUMP1(FUNC, THIS, X1) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1) 145 # define WJUMP2(FUNC, THIS, X1, X2) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1, X2) 146 # define WJUMP3(FUNC, THIS, X1,X2,X3) _IO_WIDE_JUMPS_FUNC(THIS)->FUNC.pfn (THIS, X1,X2,X3) 147 #endif 148 149 /* The 'finish' function does any final cleaning up of an _IO_FILE object. 150 It does not delete (free) it, but does everything else to finalize it. 151 It matches the streambuf::~streambuf virtual destructor. */ 152 typedef void (*_IO_finish_t) __PMT ((_IO_FILE *, int)); /* finalize */ 153 #define _IO_FINISH(FP) JUMP1 (__finish, FP, 0) 154 #define _IO_WFINISH(FP) WJUMP1 (__finish, FP, 0) 155 156 /* The 'overflow' hook flushes the buffer. 157 The second argument is a character, or EOF. 158 It matches the streambuf::overflow virtual function. */ 159 typedef int (*_IO_overflow_t) __PMT ((_IO_FILE *, int)); 160 #define _IO_OVERFLOW(FP, CH) JUMP1 (__overflow, FP, CH) 161 #define _IO_WOVERFLOW(FP, CH) WJUMP1 (__overflow, FP, CH) 162 163 /* The 'underflow' hook tries to fills the get buffer. 164 It returns the next character (as an unsigned char) or EOF. The next 165 character remains in the get buffer, and the get position is not changed. 166 It matches the streambuf::underflow virtual function. */ 167 typedef int (*_IO_underflow_t) __PMT ((_IO_FILE *)); 168 #define _IO_UNDERFLOW(FP) JUMP0 (__underflow, FP) 169 #define _IO_WUNDERFLOW(FP) WJUMP0 (__underflow, FP) 170 171 /* The 'uflow' hook returns the next character in the input stream 172 (cast to unsigned char), and increments the read position; 173 EOF is returned on failure. 174 It matches the streambuf::uflow virtual function, which is not in the 175 cfront implementation, but was added to C++ by the ANSI/ISO committee. */ 176 #define _IO_UFLOW(FP) JUMP0 (__uflow, FP) 177 #define _IO_WUFLOW(FP) WJUMP0 (__uflow, FP) 178 179 /* The 'pbackfail' hook handles backing up. 180 It matches the streambuf::pbackfail virtual function. */ 181 typedef int (*_IO_pbackfail_t) __PMT ((_IO_FILE *, int)); 182 #define _IO_PBACKFAIL(FP, CH) JUMP1 (__pbackfail, FP, CH) 183 #define _IO_WPBACKFAIL(FP, CH) WJUMP1 (__pbackfail, FP, CH) 184 185 /* The 'xsputn' hook writes upto N characters from buffer DATA. 186 Returns the number of character actually written. 187 It matches the streambuf::xsputn virtual function. */ 188 typedef _IO_size_t (*_IO_xsputn_t) __PMT ((_IO_FILE *FP, const void *DATA, 189 _IO_size_t N)); 190 #define _IO_XSPUTN(FP, DATA, N) JUMP2 (__xsputn, FP, DATA, N) 191 #define _IO_WXSPUTN(FP, DATA, N) WJUMP2 (__xsputn, FP, DATA, N) 192 193 /* The 'xsgetn' hook reads upto N characters into buffer DATA. 194 Returns the number of character actually read. 195 It matches the streambuf::xsgetn virtual function. */ 196 typedef _IO_size_t (*_IO_xsgetn_t) __PMT ((_IO_FILE *FP, void *DATA, 197 _IO_size_t N)); 198 #define _IO_XSGETN(FP, DATA, N) JUMP2 (__xsgetn, FP, DATA, N) 199 #define _IO_WXSGETN(FP, DATA, N) WJUMP2 (__xsgetn, FP, DATA, N) 200 201 /* The 'seekoff' hook moves the stream position to a new position 202 relative to the start of the file (if DIR==0), the current position 203 (MODE==1), or the end of the file (MODE==2). 204 It matches the streambuf::seekoff virtual function. 205 It is also used for the ANSI fseek function. */ 206 typedef _IO_off64_t (*_IO_seekoff_t) __PMT ((_IO_FILE *FP, _IO_off64_t OFF, 207 int DIR, int MODE)); 208 #define _IO_SEEKOFF(FP, OFF, DIR, MODE) JUMP3 (__seekoff, FP, OFF, DIR, MODE) 209 #define _IO_WSEEKOFF(FP, OFF, DIR, MODE) WJUMP3 (__seekoff, FP, OFF, DIR, MODE) 210 211 /* The 'seekpos' hook also moves the stream position, 212 but to an absolute position given by a fpos64_t (seekpos). 213 It matches the streambuf::seekpos virtual function. 214 It is also used for the ANSI fgetpos and fsetpos functions. */ 215 /* The _IO_seek_cur and _IO_seek_end options are not allowed. */ 216 typedef _IO_off64_t (*_IO_seekpos_t) __PMT ((_IO_FILE *, _IO_off64_t, int)); 217 #define _IO_SEEKPOS(FP, POS, FLAGS) JUMP2 (__seekpos, FP, POS, FLAGS) 218 #define _IO_WSEEKPOS(FP, POS, FLAGS) WJUMP2 (__seekpos, FP, POS, FLAGS) 219 220 /* The 'setbuf' hook gives a buffer to the file. 221 It matches the streambuf::setbuf virtual function. */ 222 typedef _IO_FILE* (*_IO_setbuf_t) __PMT ((_IO_FILE *, char *, _IO_ssize_t)); 223 #define _IO_SETBUF(FP, BUFFER, LENGTH) JUMP2 (__setbuf, FP, BUFFER, LENGTH) 224 #define _IO_WSETBUF(FP, BUFFER, LENGTH) WJUMP2 (__setbuf, FP, BUFFER, LENGTH) 225 226 /* The 'sync' hook attempts to synchronize the internal data structures 227 of the file with the external state. 228 It matches the streambuf::sync virtual function. */ 229 typedef int (*_IO_sync_t) __PMT ((_IO_FILE *)); 230 #define _IO_SYNC(FP) JUMP0 (__sync, FP) 231 #define _IO_WSYNC(FP) WJUMP0 (__sync, FP) 232 233 /* The 'doallocate' hook is used to tell the file to allocate a buffer. 234 It matches the streambuf::doallocate virtual function, which is not 235 in the ANSI/ISO C++ standard, but is part traditional implementations. */ 236 typedef int (*_IO_doallocate_t) __PMT ((_IO_FILE *)); 237 #define _IO_DOALLOCATE(FP) JUMP0 (__doallocate, FP) 238 #define _IO_WDOALLOCATE(FP) WJUMP0 (__doallocate, FP) 239 240 /* The following four hooks (sysread, syswrite, sysclose, sysseek, and 241 sysstat) are low-level hooks specific to this implementation. 242 There is no correspondence in the ANSI/ISO C++ standard library. 243 The hooks basically correspond to the Unix system functions 244 (read, write, close, lseek, and stat) except that a _IO_FILE* 245 parameter is used instead of a integer file descriptor; the default 246 implementation used for normal files just calls those functions. 247 The advantage of overriding these functions instead of the higher-level 248 ones (underflow, overflow etc) is that you can leave all the buffering 249 higher-level functions. */ 250 251 /* The 'sysread' hook is used to read data from the external file into 252 an existing buffer. It generalizes the Unix read(2) function. 253 It matches the streambuf::sys_read virtual function, which is 254 specific to this implementation. */ 255 typedef _IO_ssize_t (*_IO_read_t) __PMT ((_IO_FILE *, void *, _IO_ssize_t)); 256 #define _IO_SYSREAD(FP, DATA, LEN) JUMP2 (__read, FP, DATA, LEN) 257 #define _IO_WSYSREAD(FP, DATA, LEN) WJUMP2 (__read, FP, DATA, LEN) 258 259 /* The 'syswrite' hook is used to write data from an existing buffer 260 to an external file. It generalizes the Unix write(2) function. 261 It matches the streambuf::sys_write virtual function, which is 262 specific to this implementation. */ 263 typedef _IO_ssize_t (*_IO_write_t) __PMT ((_IO_FILE *, const void *, 264 _IO_ssize_t)); 265 #define _IO_SYSWRITE(FP, DATA, LEN) JUMP2 (__write, FP, DATA, LEN) 266 #define _IO_WSYSWRITE(FP, DATA, LEN) WJUMP2 (__write, FP, DATA, LEN) 267 268 /* The 'sysseek' hook is used to re-position an external file. 269 It generalizes the Unix lseek(2) function. 270 It matches the streambuf::sys_seek virtual function, which is 271 specific to this implementation. */ 272 typedef _IO_off64_t (*_IO_seek_t) __PMT ((_IO_FILE *, _IO_off64_t, int)); 273 #define _IO_SYSSEEK(FP, OFFSET, MODE) JUMP2 (__seek, FP, OFFSET, MODE) 274 #define _IO_WSYSSEEK(FP, OFFSET, MODE) WJUMP2 (__seek, FP, OFFSET, MODE) 275 276 /* The 'sysclose' hook is used to finalize (close, finish up) an 277 external file. It generalizes the Unix close(2) function. 278 It matches the streambuf::sys_close virtual function, which is 279 specific to this implementation. */ 280 typedef int (*_IO_close_t) __PMT ((_IO_FILE *)); /* finalize */ 281 #define _IO_SYSCLOSE(FP) JUMP0 (__close, FP) 282 #define _IO_WSYSCLOSE(FP) WJUMP0 (__close, FP) 283 284 /* The 'sysstat' hook is used to get information about an external file 285 into a struct stat buffer. It generalizes the Unix fstat(2) call. 286 It matches the streambuf::sys_stat virtual function, which is 287 specific to this implementation. */ 288 typedef int (*_IO_stat_t) __PMT ((_IO_FILE *, void *)); 289 #define _IO_SYSSTAT(FP, BUF) JUMP1 (__stat, FP, BUF) 290 #define _IO_WSYSSTAT(FP, BUF) WJUMP1 (__stat, FP, BUF) 291 292 /* The 'showmany' hook can be used to get an image how much input is 293 available. In many cases the answer will be 0 which means unknown 294 but some cases one can provide real information. */ 295 typedef int (*_IO_showmanyc_t) __PMT ((_IO_FILE *)); 296 #define _IO_SHOWMANYC(FP) JUMP0 (__showmanyc, FP) 297 #define _IO_WSHOWMANYC(FP) WJUMP0 (__showmanyc, FP) 298 299 /* The 'imbue' hook is used to get information about the currently 300 installed locales. */ 301 typedef void (*_IO_imbue_t) __PMT ((_IO_FILE *, void *)); 302 #define _IO_IMBUE(FP, LOCALE) JUMP1 (__imbue, FP, LOCALE) 303 #define _IO_WIMBUE(FP, LOCALE) WJUMP1 (__imbue, FP, LOCALE) 304 305 306 #define _IO_CHAR_TYPE char /* unsigned char ? */ 307 #define _IO_INT_TYPE int 308 309 struct _IO_jump_t 310 { 311 JUMP_FIELD(_G_size_t, __dummy); 312 #ifdef _G_USING_THUNKS 313 JUMP_FIELD(_G_size_t, __dummy2); 314 #endif 315 JUMP_FIELD(_IO_finish_t, __finish); 316 JUMP_FIELD(_IO_overflow_t, __overflow); 317 JUMP_FIELD(_IO_underflow_t, __underflow); 318 JUMP_FIELD(_IO_underflow_t, __uflow); 319 JUMP_FIELD(_IO_pbackfail_t, __pbackfail); 320 /* showmany */ 321 JUMP_FIELD(_IO_xsputn_t, __xsputn); 322 JUMP_FIELD(_IO_xsgetn_t, __xsgetn); 323 JUMP_FIELD(_IO_seekoff_t, __seekoff); 324 JUMP_FIELD(_IO_seekpos_t, __seekpos); 325 JUMP_FIELD(_IO_setbuf_t, __setbuf); 326 JUMP_FIELD(_IO_sync_t, __sync); 327 JUMP_FIELD(_IO_doallocate_t, __doallocate); 328 JUMP_FIELD(_IO_read_t, __read); 329 JUMP_FIELD(_IO_write_t, __write); 330 JUMP_FIELD(_IO_seek_t, __seek); 331 JUMP_FIELD(_IO_close_t, __close); 332 JUMP_FIELD(_IO_stat_t, __stat); 333 JUMP_FIELD(_IO_showmanyc_t, __showmanyc); 334 JUMP_FIELD(_IO_imbue_t, __imbue); 335 #if 0 336 get_column; 337 set_column; 338 #endif 339 }; 340 341 /* We always allocate an extra word following an _IO_FILE. 342 This contains a pointer to the function jump table used. 343 This is for compatibility with C++ streambuf; the word can 344 be used to smash to a pointer to a virtual function table. */ 345 346 struct _IO_FILE_plus 347 { 348 _IO_FILE file; 349 const struct _IO_jump_t *vtable; 350 }; 351 352 /* Special file type for fopencookie function. */ 353 struct _IO_cookie_file 354 { 355 struct _IO_FILE_plus __fp; 356 void *__cookie; 357 _IO_cookie_io_functions_t __io_functions; 358 }; 359 360 _IO_FILE *_IO_fopencookie (void *cookie, const char *mode, 361 _IO_cookie_io_functions_t io_functions); 362 363 364 /* Iterator type for walking global linked list of _IO_FILE objects. */ 365 366 typedef struct _IO_FILE *_IO_ITER; 367 368 /* Generic functions */ 369 370 extern void _IO_switch_to_main_get_area __P ((_IO_FILE *)); 371 extern void _IO_switch_to_backup_area __P ((_IO_FILE *)); 372 extern int _IO_switch_to_get_mode __P ((_IO_FILE *)); 373 extern void _IO_init __P ((_IO_FILE *, int)); 374 extern int _IO_sputbackc __P ((_IO_FILE *, int)); 375 extern int _IO_sungetc __P ((_IO_FILE *)); 376 extern void _IO_un_link __P ((struct _IO_FILE_plus *)); 377 extern void _IO_link_in __P ((struct _IO_FILE_plus *)); 378 extern void _IO_doallocbuf __P ((_IO_FILE *)); 379 extern void _IO_unsave_markers __P ((_IO_FILE *)); 380 extern void _IO_setb __P ((_IO_FILE *, char *, char *, int)); 381 extern unsigned _IO_adjust_column __P ((unsigned, const char *, int)); 382 #define _IO_sputn(__fp, __s, __n) _IO_XSPUTN (__fp, __s, __n) 383 384 extern void _IO_switch_to_main_wget_area __P ((_IO_FILE *)); 385 extern void _IO_switch_to_wbackup_area __P ((_IO_FILE *)); 386 extern int _IO_switch_to_wget_mode __P ((_IO_FILE *)); 387 extern void _IO_wsetb __P ((_IO_FILE *, wchar_t *, wchar_t *, int)); 388 extern wint_t _IO_sputbackwc __P ((_IO_FILE *, wint_t)); 389 extern wint_t _IO_sungetwc __P ((_IO_FILE *)); 390 extern void _IO_wdoallocbuf __P ((_IO_FILE *)); 391 extern void _IO_unsave_wmarkers __P ((_IO_FILE *)); 392 extern unsigned _IO_adjust_wcolumn __P ((unsigned, const wchar_t *, int)); 393 394 /* Marker-related function. */ 395 396 extern void _IO_init_marker __P ((struct _IO_marker *, _IO_FILE *)); 397 extern void _IO_init_wmarker __P ((struct _IO_marker *, _IO_FILE *)); 398 extern void _IO_remove_marker __P ((struct _IO_marker *)); 399 extern int _IO_marker_difference __P ((struct _IO_marker *, 400 struct _IO_marker *)); 401 extern int _IO_marker_delta __P ((struct _IO_marker *)); 402 extern int _IO_wmarker_delta __P ((struct _IO_marker *)); 403 extern int _IO_seekmark __P ((_IO_FILE *, struct _IO_marker *, int)); 404 extern int _IO_seekwmark __P ((_IO_FILE *, struct _IO_marker *, int)); 405 406 /* Functions for iterating global list and dealing with 407 its lock */ 408 409 extern _IO_ITER _IO_iter_begin __P ((void)); 410 libc_hidden_proto (_IO_iter_begin) 411 extern _IO_ITER _IO_iter_end __P ((void)); 412 libc_hidden_proto (_IO_iter_end) 413 extern _IO_ITER _IO_iter_next __P ((_IO_ITER)); 414 libc_hidden_proto (_IO_iter_next) 415 extern _IO_FILE *_IO_iter_file __P ((_IO_ITER)); 416 libc_hidden_proto (_IO_iter_file) 417 extern void _IO_list_lock __P ((void)); 418 libc_hidden_proto (_IO_list_lock) 419 extern void _IO_list_unlock __P ((void)); 420 libc_hidden_proto (_IO_list_unlock) 421 extern void _IO_list_resetlock __P ((void)); 422 libc_hidden_proto (_IO_list_resetlock) 423 424 /* Default jumptable functions. */ 425 426 extern int _IO_default_underflow __P ((_IO_FILE *)); 427 extern int _IO_default_uflow __P ((_IO_FILE *)); 428 extern wint_t _IO_wdefault_uflow __P ((_IO_FILE *)); 429 extern int _IO_default_doallocate __P ((_IO_FILE *)); 430 extern int _IO_wdefault_doallocate __P ((_IO_FILE *)); 431 extern void _IO_default_finish __P ((_IO_FILE *, int)); 432 extern void _IO_wdefault_finish __P ((_IO_FILE *, int)); 433 extern int _IO_default_pbackfail __P ((_IO_FILE *, int)); 434 extern wint_t _IO_wdefault_pbackfail __P ((_IO_FILE *, wint_t)); 435 extern _IO_FILE* _IO_default_setbuf __P ((_IO_FILE *, char *, _IO_ssize_t)); 436 extern _IO_size_t _IO_default_xsputn __P ((_IO_FILE *, const void *, 437 _IO_size_t)); 438 extern _IO_size_t _IO_wdefault_xsputn __P ((_IO_FILE *, const void *, 439 _IO_size_t)); 440 extern _IO_size_t _IO_default_xsgetn __P ((_IO_FILE *, void *, _IO_size_t)); 441 extern _IO_size_t _IO_wdefault_xsgetn __P ((_IO_FILE *, void *, _IO_size_t)); 442 extern _IO_off64_t _IO_default_seekoff __P ((_IO_FILE *, 443 _IO_off64_t, int, int)); 444 extern _IO_off64_t _IO_default_seekpos __P ((_IO_FILE *, _IO_off64_t, int)); 445 extern _IO_ssize_t _IO_default_write __P ((_IO_FILE *, const void *, 446 _IO_ssize_t)); 447 extern _IO_ssize_t _IO_default_read __P ((_IO_FILE *, void *, _IO_ssize_t)); 448 extern int _IO_default_stat __P ((_IO_FILE *, void *)); 449 extern _IO_off64_t _IO_default_seek __P ((_IO_FILE *, _IO_off64_t, int)); 450 extern int _IO_default_sync __P ((_IO_FILE *)); 451 #define _IO_default_close ((_IO_close_t) _IO_default_sync) 452 extern int _IO_default_showmanyc __P ((_IO_FILE *)); 453 extern void _IO_default_imbue __P ((_IO_FILE *, void *)); 454 455 extern struct _IO_jump_t _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 attribute_hidden; 459 extern struct _IO_jump_t _IO_wfile_jumps_mmap attribute_hidden; 460 extern struct _IO_jump_t _IO_wfile_jumps_maybe_mmap attribute_hidden; 461 extern struct _IO_jump_t _IO_old_file_jumps attribute_hidden; 462 extern struct _IO_jump_t _IO_streambuf_jumps; 463 extern struct _IO_jump_t _IO_old_proc_jumps attribute_hidden; 464 extern struct _IO_jump_t _IO_str_jumps attribute_hidden; 465 extern struct _IO_jump_t _IO_wstr_jumps attribute_hidden; 466 extern struct _IO_codecvt __libio_codecvt attribute_hidden; 467 extern int _IO_do_write __P ((_IO_FILE *, const char *, _IO_size_t)); 468 extern int _IO_new_do_write __P ((_IO_FILE *, const char *, _IO_size_t)); 469 extern int _IO_old_do_write __P ((_IO_FILE *, const char *, _IO_size_t)); 470 extern int _IO_wdo_write __P ((_IO_FILE *, const wchar_t *, _IO_size_t)); 471 extern int _IO_flush_all_lockp __P ((int)); 472 extern int _IO_flush_all __P ((void)); 473 extern int _IO_cleanup __P ((void)); 474 extern void _IO_flush_all_linebuffered __P ((void)); 475 extern int _IO_new_fgetpos __P ((_IO_FILE *, _IO_fpos_t *)); 476 extern int _IO_old_fgetpos __P ((_IO_FILE *, _IO_fpos_t *)); 477 extern int _IO_new_fsetpos __P ((_IO_FILE *, const _IO_fpos_t *)); 478 extern int _IO_old_fsetpos __P ((_IO_FILE *, const _IO_fpos_t *)); 479 extern int _IO_new_fgetpos64 __P ((_IO_FILE *, _IO_fpos64_t *)); 480 extern int _IO_old_fgetpos64 __P ((_IO_FILE *, _IO_fpos64_t *)); 481 extern int _IO_new_fsetpos64 __P ((_IO_FILE *, const _IO_fpos64_t *)); 482 extern int _IO_old_fsetpos64 __P ((_IO_FILE *, const _IO_fpos64_t *)); 483 484 485 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T 486 # define _IO_do_flush(_f) \ 487 ((_f)->_mode <= 0 \ 488 ? INTUSE(_IO_do_write)(_f, (_f)->_IO_write_base, \ 489 (_f)->_IO_write_ptr-(_f)->_IO_write_base) \ 490 : INTUSE(_IO_wdo_write)(_f, (_f)->_wide_data->_IO_write_base, \ 491 ((_f)->_wide_data->_IO_write_ptr \ 492 - (_f)->_wide_data->_IO_write_base))) 493 #else 494 # define _IO_do_flush(_f) \ 495 INTUSE(_IO_do_write)(_f, (_f)->_IO_write_base, \ 496 (_f)->_IO_write_ptr-(_f)->_IO_write_base) 497 #endif 498 499 #define _IO_old_do_flush(_f) \ 500 _IO_old_do_write(_f, (_f)->_IO_write_base, \ 501 (_f)->_IO_write_ptr-(_f)->_IO_write_base) 502 #define _IO_in_put_mode(_fp) ((_fp)->_flags & _IO_CURRENTLY_PUTTING) 503 #define _IO_mask_flags(fp, f, mask) \ 504 ((fp)->_flags = ((fp)->_flags & ~(mask)) | ((f) & (mask))) 505 #define _IO_setg(fp, eb, g, eg) ((fp)->_IO_read_base = (eb),\ 506 (fp)->_IO_read_ptr = (g), (fp)->_IO_read_end = (eg)) 507 #define _IO_wsetg(fp, eb, g, eg) ((fp)->_wide_data->_IO_read_base = (eb),\ 508 (fp)->_wide_data->_IO_read_ptr = (g), \ 509 (fp)->_wide_data->_IO_read_end = (eg)) 510 #define _IO_setp(__fp, __p, __ep) \ 511 ((__fp)->_IO_write_base = (__fp)->_IO_write_ptr \ 512 = __p, (__fp)->_IO_write_end = (__ep)) 513 #define _IO_wsetp(__fp, __p, __ep) \ 514 ((__fp)->_wide_data->_IO_write_base \ 515 = (__fp)->_wide_data->_IO_write_ptr = __p, \ 516 (__fp)->_wide_data->_IO_write_end = (__ep)) 517 #define _IO_have_backup(fp) ((fp)->_IO_save_base != NULL) 518 #define _IO_have_wbackup(fp) ((fp)->_wide_data->_IO_save_base != NULL) 519 #define _IO_in_backup(fp) ((fp)->_flags & _IO_IN_BACKUP) 520 #define _IO_have_markers(fp) ((fp)->_markers != NULL) 521 #define _IO_blen(fp) ((fp)->_IO_buf_end - (fp)->_IO_buf_base) 522 #define _IO_wblen(fp) ((fp)->_wide_data->_IO_buf_end \ 523 - (fp)->_wide_data->_IO_buf_base) 524 525 /* Jumptable functions for files. */ 526 527 extern int _IO_file_doallocate __P ((_IO_FILE *)); 528 extern _IO_FILE* _IO_file_setbuf __P ((_IO_FILE *, char *, _IO_ssize_t)); 529 extern _IO_off64_t _IO_file_seekoff __P ((_IO_FILE *, _IO_off64_t, int, int)); 530 extern _IO_off64_t _IO_file_seekoff_mmap __P ((_IO_FILE *, _IO_off64_t, int, 531 int)); 532 extern _IO_size_t _IO_file_xsputn __P ((_IO_FILE *, const void *, _IO_size_t)); 533 extern _IO_size_t _IO_file_xsgetn __P ((_IO_FILE *, void *, _IO_size_t)); 534 extern int _IO_file_stat __P ((_IO_FILE *, void *)); 535 extern int _IO_file_close __P ((_IO_FILE *)); 536 extern int _IO_file_close_mmap __P ((_IO_FILE *)); 537 extern int _IO_file_underflow __P ((_IO_FILE *)); 538 extern int _IO_file_underflow_mmap __P ((_IO_FILE *)); 539 extern int _IO_file_underflow_maybe_mmap __P ((_IO_FILE *)); 540 extern int _IO_file_overflow __P ((_IO_FILE *, int)); 541 #define _IO_file_is_open(__fp) ((__fp)->_fileno != -1) 542 extern void _IO_file_init __P ((struct _IO_FILE_plus *)); 543 extern _IO_FILE* _IO_file_attach __P ((_IO_FILE *, int)); 544 extern _IO_FILE* _IO_file_open __P ((_IO_FILE *, const char *, int, int, 545 int, int)); 546 libc_hidden_proto (_IO_file_open) 547 extern _IO_FILE* _IO_file_fopen __P ((_IO_FILE *, const char *, const char *, 548 int)); 549 extern _IO_ssize_t _IO_file_write __P ((_IO_FILE *, const void *, 550 _IO_ssize_t)); 551 extern _IO_ssize_t _IO_file_read __P ((_IO_FILE *, void *, _IO_ssize_t)); 552 extern int _IO_file_sync __P ((_IO_FILE *)); 553 extern int _IO_file_close_it __P ((_IO_FILE *)); 554 extern _IO_off64_t _IO_file_seek __P ((_IO_FILE *, _IO_off64_t, int)); 555 extern void _IO_file_finish __P ((_IO_FILE *, int)); 556 557 extern _IO_FILE* _IO_new_file_attach __P ((_IO_FILE *, int)); 558 extern int _IO_new_file_close_it __P ((_IO_FILE *)); 559 extern void _IO_new_file_finish __P ((_IO_FILE *, int)); 560 extern _IO_FILE* _IO_new_file_fopen __P ((_IO_FILE *, const char *, const char *, 561 int)); 562 extern void _IO_no_init __P ((_IO_FILE *, int, int, struct _IO_wide_data *, 563 struct _IO_jump_t *)); 564 extern void _IO_new_file_init __P ((struct _IO_FILE_plus *)); 565 extern _IO_FILE* _IO_new_file_setbuf __P ((_IO_FILE *, char *, _IO_ssize_t)); 566 extern _IO_FILE* _IO_file_setbuf_mmap __P ((_IO_FILE *, char *, _IO_ssize_t)); 567 extern int _IO_new_file_sync __P ((_IO_FILE *)); 568 extern int _IO_new_file_underflow __P ((_IO_FILE *)); 569 extern int _IO_new_file_overflow __P ((_IO_FILE *, int)); 570 extern _IO_off64_t _IO_new_file_seekoff __P ((_IO_FILE *, _IO_off64_t, int, int)); 571 extern _IO_ssize_t _IO_new_file_write __P ((_IO_FILE *, const void *, 572 _IO_ssize_t)); 573 extern _IO_size_t _IO_new_file_xsputn __P ((_IO_FILE *, const void *, _IO_size_t)); 574 575 extern _IO_FILE* _IO_old_file_setbuf __P ((_IO_FILE *, char *, _IO_ssize_t)); 576 extern _IO_off64_t _IO_old_file_seekoff __P ((_IO_FILE *, _IO_off64_t, int, 577 int)); 578 extern _IO_size_t _IO_old_file_xsputn __P ((_IO_FILE *, const void *, 579 _IO_size_t)); 580 extern int _IO_old_file_underflow __P ((_IO_FILE *)); 581 extern int _IO_old_file_overflow __P ((_IO_FILE *, int)); 582 extern void _IO_old_file_init __P ((struct _IO_FILE_plus *)); 583 extern _IO_FILE* _IO_old_file_attach __P ((_IO_FILE *, int)); 584 extern _IO_FILE* _IO_old_file_fopen __P ((_IO_FILE *, const char *, 585 const char *)); 586 extern _IO_ssize_t _IO_old_file_write __P ((_IO_FILE *, const void *, 587 _IO_ssize_t)); 588 extern int _IO_old_file_sync __P ((_IO_FILE *)); 589 extern int _IO_old_file_close_it __P ((_IO_FILE *)); 590 extern void _IO_old_file_finish __P ((_IO_FILE *, int)); 591 592 extern int _IO_wfile_doallocate __P ((_IO_FILE *)); 593 extern _IO_size_t _IO_wfile_xsputn __P ((_IO_FILE *, const void *, 594 _IO_size_t)); 595 extern _IO_FILE* _IO_wfile_setbuf __P ((_IO_FILE *, wchar_t *, _IO_ssize_t)); 596 extern wint_t _IO_wfile_sync __P ((_IO_FILE *)); 597 extern wint_t _IO_wfile_underflow __P ((_IO_FILE *)); 598 extern wint_t _IO_wfile_overflow __P ((_IO_FILE *, wint_t)); 599 extern _IO_off64_t _IO_wfile_seekoff __P ((_IO_FILE *, _IO_off64_t, int, int)); 600 601 /* Jumptable functions for proc_files. */ 602 extern _IO_FILE* _IO_proc_open __P ((_IO_FILE *, const char *, const char *)); 603 extern _IO_FILE* _IO_new_proc_open __P ((_IO_FILE *, const char *, const char *)); 604 extern _IO_FILE* _IO_old_proc_open __P ((_IO_FILE *, const char *, const char *)); 605 extern int _IO_proc_close __P ((_IO_FILE *)); 606 extern int _IO_new_proc_close __P ((_IO_FILE *)); 607 extern int _IO_old_proc_close __P ((_IO_FILE *)); 608 609 /* Jumptable functions for strfiles. */ 610 extern int _IO_str_underflow __P ((_IO_FILE *)); 611 extern int _IO_str_overflow __P ((_IO_FILE *, int)); 612 extern int _IO_str_pbackfail __P ((_IO_FILE *, int)); 613 extern _IO_off64_t _IO_str_seekoff __P ((_IO_FILE *, _IO_off64_t, int, int)); 614 extern void _IO_str_finish __P ((_IO_FILE *, int)); 615 616 /* Other strfile functions */ 617 struct _IO_strfile_; 618 extern void _IO_str_init_static __P ((struct _IO_strfile_ *, char *, int, char *)); 619 extern void _IO_str_init_readonly __P ((struct _IO_strfile_ *, const char *, int)); 620 extern _IO_ssize_t _IO_str_count __P ((_IO_FILE *)); 621 622 /* And the wide character versions. */ 623 extern void _IO_wstr_init_static __P ((_IO_FILE *, wchar_t *, int, wchar_t *)); 624 extern void _IO_wstr_init_readonly __P ((_IO_FILE *, const char *, int)); 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)); 631 632 extern int _IO_vasprintf __P ((char **result_ptr, __const char *format, 633 _IO_va_list args)); 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)); 637 638 639 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, 641 int, int, int *)); 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, 644 int)); 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)); 653 654 extern struct _IO_FILE_plus *_IO_list_all; 655 extern void (*_IO_cleanup_registration_needed) __PMT ((void)); 656 657 /* 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)); 660 661 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 *, 665 _IO_size_t)); 666 extern _IO_size_t _IO_default_xsgetn_internal __P ((_IO_FILE *, void *, 667 _IO_size_t)); 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 *, 672 _IO_size_t)); 673 extern _IO_size_t _IO_wdefault_xsgetn_internal __P ((_IO_FILE *, void *, 674 _IO_size_t)); 675 extern int _IO_wdefault_doallocate_internal __P ((_IO_FILE *)); 676 extern wint_t _IO_wdefault_uflow_internal __P ((_IO_FILE *)); 677 678 extern int _IO_file_doallocate_internal __P ((_IO_FILE *)); 679 extern _IO_FILE* _IO_file_setbuf_internal __P ((_IO_FILE *, char *, 680 _IO_ssize_t)); 681 extern _IO_off64_t _IO_file_seekoff_internal __P ((_IO_FILE *, _IO_off64_t, 682 int, int)); 683 extern _IO_size_t _IO_file_xsputn_internal __P ((_IO_FILE *, const void *, 684 _IO_size_t)); 685 extern _IO_size_t _IO_file_xsgetn_internal __P ((_IO_FILE *, void *, 686 _IO_size_t)); 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 *, 695 const char *, int)); 696 extern _IO_ssize_t _IO_file_read_internal __P ((_IO_FILE *, void *, 697 _IO_ssize_t)); 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)); 701 702 extern _IO_size_t _IO_wfile_xsputn_internal __P ((_IO_FILE *, const void *, 703 _IO_size_t)); 704 extern _IO_off64_t _IO_wfile_seekoff_internal __P ((_IO_FILE *, _IO_off64_t, 705 int, int)); 706 extern wint_t _IO_wfile_sync_internal __P ((_IO_FILE *)); 707 708 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, 712 int, int)); 713 extern void _IO_str_init_static_internal __P ((struct _IO_strfile_ *, char *, 714 int, char *)); 715 716 extern struct _IO_jump_t _IO_file_jumps_internal attribute_hidden; 717 extern struct _IO_jump_t _IO_wfile_jumps_internal attribute_hidden; 718 719 extern struct _IO_FILE_plus *_IO_list_all_internal attribute_hidden; 720 721 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 *)); 724 725 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 *, 731 _IO_size_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, 736 int *)); 737 extern _IO_size_t _IO_getline_internal __P ((_IO_FILE *, char *, _IO_size_t, 738 int, int)); 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, 749 _IO_va_list); 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) 753 attribute_hidden; 754 extern _IO_off64_t _IO_seekpos_unlocked (_IO_FILE *, _IO_off64_t, int) 755 attribute_hidden; 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 *)); 759 760 #ifndef EOF 761 # define EOF (-1) 762 #endif 763 #ifndef NULL 764 # if defined __GNUG__ && \ 765 (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8)) 766 # define NULL (__null) 767 # else 768 # if !defined(__cplusplus) 769 # define NULL ((void*)0) 770 # else 771 # define NULL (0) 772 # endif 773 # endif 774 #endif 775 776 #if _G_HAVE_MMAP 777 778 # include <unistd.h> 779 # include <fcntl.h> 780 # include <sys/mman.h> 781 # include <sys/param.h> 782 783 # if !defined(MAP_ANONYMOUS) && defined(MAP_ANON) 784 # define MAP_ANONYMOUS MAP_ANON 785 # endif 786 787 # if !defined(MAP_ANONYMOUS) || !defined(EXEC_PAGESIZE) 788 # undef _G_HAVE_MMAP 789 # define _G_HAVE_MMAP 0 790 # endif 791 792 #endif /* _G_HAVE_MMAP */ 793 794 #if _G_HAVE_MMAP 795 796 # ifdef _LIBC 797 /* When using this code in the GNU libc we must not pollute the name space. */ 798 # define mmap __mmap 799 # define munmap __munmap 800 # define ftruncate __ftruncate 801 # endif 802 803 # define ROUND_TO_PAGE(_S) \ 804 (((_S) + EXEC_PAGESIZE - 1) & ~(EXEC_PAGESIZE - 1)) 805 806 # define FREE_BUF(_B, _S) \ 807 munmap ((_B), ROUND_TO_PAGE (_S)) 808 # define ALLOC_BUF(_B, _S, _R) \ 809 do { \ 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) \ 814 return (_R); \ 815 } while (0) 816 # define ALLOC_WBUF(_B, _S, _R) \ 817 do { \ 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) \ 822 return (_R); \ 823 } while (0) 824 825 #else /* _G_HAVE_MMAP */ 826 827 # define FREE_BUF(_B, _S) \ 828 free(_B) 829 # define ALLOC_BUF(_B, _S, _R) \ 830 do { \ 831 (_B) = (char*)malloc(_S); \ 832 if ((_B) == NULL) \ 833 return (_R); \ 834 } while (0) 835 # define ALLOC_WBUF(_B, _S, _R) \ 836 do { \ 837 (_B) = (wchar_t *)malloc(_S); \ 838 if ((_B) == NULL) \ 839 return (_R); \ 840 } while (0) 841 842 #endif /* _G_HAVE_MMAP */ 843 844 #ifndef OS_FSTAT 845 # define OS_FSTAT fstat 846 #endif 847 struct stat; 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)); 854 855 /* _IO_pos_BAD is an _IO_off64_t value indicating error, unknown, or EOF. */ 856 #ifndef _IO_pos_BAD 857 # define _IO_pos_BAD ((_IO_off64_t) -1) 858 #endif 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)) 862 #endif 863 /* _IO_pos_0 is an _IO_off64_t value indicating beginning of file. */ 864 #ifndef _IO_pos_0 865 # define _IO_pos_0 ((_IO_off64_t) 0) 866 #endif 867 868 #ifdef __cplusplus 869 } 870 #endif 871 872 #ifdef _IO_MTSAFE_IO 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 } 879 # else 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,\ 885 NULL, WDP, 0 } 886 # else 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,\ 891 0 } 892 # endif 893 # endif 894 #else 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, \ 899 0, _IO_pos_BAD } 900 # else 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, \ 906 NULL, WDP, 0 } 907 # else 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, \ 912 0 } 913 # endif 914 # endif 915 #endif 916 917 /* VTABLE_LABEL defines NAME as of the CLASS class. 918 CNLENGTH is strlen(#CLASS). */ 919 #ifdef __GNUC__ 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); 923 # else 924 # define VTABLE_LABEL(NAME, CLASS, CNLENGTH) \ 925 extern char NAME[] asm (_G_VTABLE_LABEL_PREFIX #CLASS); 926 # endif 927 #endif /* __GNUC__ */ 928 929 #if !defined(builtinbuf_vtable) && defined(__cplusplus) 930 # ifdef __GNUC__ 931 VTABLE_LABEL(builtinbuf_vtable, builtinbuf, 10) 932 # else 933 # if _G_VTABLE_LABEL_HAS_LENGTH 934 # define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##10builtinbuf 935 # else 936 # define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##builtinbuf 937 # endif 938 # endif 939 #endif /* !defined(builtinbuf_vtable) && defined(__cplusplus) */ 940 941 #if defined(__STDC__) || defined(__cplusplus) 942 # define _IO_va_start(args, last) va_start(args, last) 943 #else 944 # define _IO_va_start(args, last) va_start(args) 945 #endif 946 947 extern struct _IO_fake_stdiobuf _IO_stdin_buf, _IO_stdout_buf, _IO_stderr_buf; 948 949 #if 1 950 # define COERCE_FILE(FILE) /* Nothing */ 951 #else 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]) 956 #endif 957 958 #ifdef EINVAL 959 # define MAYBE_SET_EINVAL __set_errno (EINVAL) 960 #else 961 # define MAYBE_SET_EINVAL /* nothing */ 962 #endif 963 964 #ifdef IO_DEBUG 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; }} 970 #else 971 # define CHECK_FILE(FILE, RET) COERCE_FILE (FILE) 972 #endif 973 974 #endif /* _LIBIO_P_H_ */ 975