1 /* Define ISO C stdio on top of C++ iostreams. 2 Copyright (C) 1991,1994-1999,2000,01,02 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, write to the Free 17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 18 02111-1307 USA. */ 19 20 /* 21 * ISO C99 Standard: 7.19 Input/output <stdio.h> 22 */ 23 24 #ifndef _STDIO_H 25 26 //#include <libioP.h> 27 28 #if !defined __need_FILE && !defined __need___FILE 29 # define _STDIO_H 1 30 # include <features.h> 31 32 __BEGIN_DECLS 33 34 # define __need_size_t 35 # define __need_NULL 36 # include <stddef.h> 37 38 # include <bits/types.h> 39 # define __need_FILE 40 # define __need___FILE 41 #endif /* Don't need FILE. */ 42 43 44 #if !defined __FILE_defined && defined __need_FILE 45 46 __BEGIN_NAMESPACE_STD 47 /* The opaque type of streams. This is the definition used elsewhere. */ 48 typedef struct _IO_FILE FILE; 49 __END_NAMESPACE_STD 50 #if defined __USE_LARGEFILE64 || defined __USE_SVID || defined __USE_POSIX \ 51 || defined __USE_BSD || defined __USE_ISOC99 || defined __USE_XOPEN \ 52 || defined __USE_POSIX2 53 __USING_NAMESPACE_STD(FILE) 54 #endif 55 56 # define __FILE_defined 1 57 #endif /* FILE not defined. */ 58 #undef __need_FILE 59 60 61 #if !defined ____FILE_defined && defined __need___FILE 62 63 /* The opaque type of streams. This is the definition used elsewhere. */ 64 typedef struct _IO_FILE __FILE; 65 66 # define ____FILE_defined 1 67 #endif /* __FILE not defined. */ 68 #undef __need___FILE 69 70 71 #ifdef _STDIO_H 72 /* 73 * [zooey]: operations on cin/cout/cerr and stdin/stdout/stderr should support 74 * being mixed on a character by character basis: 75 * printf("this is "); cout << "a string" << endl; 76 * should yield "this is a string" on a single line. 77 * This never worked on BeOS, as the supposedly unique stream-symbols 78 * existed in libroot as well as in libstdc++. 79 * Since we do no longer have this problem, activating 80 * _STDIO_USES_IOSTREAM does no harm. 81 */ 82 #define _STDIO_USES_IOSTREAM 83 84 #include <libio.h> 85 86 #ifdef __USE_XOPEN 87 # ifdef __GNUC__ 88 # ifndef _VA_LIST_DEFINED 89 typedef _G_va_list va_list; 90 # define _VA_LIST_DEFINED 91 # endif 92 # else 93 # include <stdarg.h> 94 # endif 95 #endif 96 97 /* The type of the second argument to `fgetpos' and `fsetpos'. */ 98 __BEGIN_NAMESPACE_STD 99 #ifndef __USE_FILE_OFFSET64 100 typedef _G_fpos_t fpos_t; 101 #else 102 typedef _G_fpos64_t fpos_t; 103 #endif 104 __END_NAMESPACE_STD 105 #ifdef __USE_LARGEFILE64 106 typedef _G_fpos64_t fpos64_t; 107 #endif 108 109 /* The possibilities for the third argument to `setvbuf'. */ 110 #define _IOFBF 0 /* Fully buffered. */ 111 #define _IOLBF 1 /* Line buffered. */ 112 #define _IONBF 2 /* No buffering. */ 113 114 115 /* Default buffer size. */ 116 #ifndef BUFSIZ 117 # define BUFSIZ _IO_BUFSIZ 118 #endif 119 120 121 /* End of file character. 122 Some things throughout the library rely on this being -1. */ 123 #ifndef EOF 124 # define EOF (-1) 125 #endif 126 127 128 /* The possibilities for the third argument to `fseek'. 129 These values should not be changed. */ 130 #define SEEK_SET 0 /* Seek from beginning of file. */ 131 #define SEEK_CUR 1 /* Seek from current position. */ 132 #define SEEK_END 2 /* Seek from end of file. */ 133 134 135 #if defined __USE_SVID || defined __USE_XOPEN 136 /* Default path prefix for `tempnam' and `tmpnam'. */ 137 # define P_tmpdir "/tmp" 138 #endif 139 140 141 /* Get the values: 142 L_tmpnam How long an array of chars must be to be passed to `tmpnam'. 143 TMP_MAX The minimum number of unique filenames generated by tmpnam 144 (and tempnam when it uses tmpnam's name space), 145 or tempnam (the two are separate). 146 L_ctermid How long an array to pass to `ctermid'. 147 L_cuserid How long an array to pass to `cuserid'. 148 FOPEN_MAX Minimum number of files that can be open at once. 149 FILENAME_MAX Maximum length of a filename. */ 150 #include <bits/stdio_lim.h> 151 152 153 /* Standard streams. */ 154 extern struct _IO_FILE *stdin; /* Standard input stream. */ 155 extern struct _IO_FILE *stdout; /* Standard output stream. */ 156 extern struct _IO_FILE *stderr; /* Standard error output stream. */ 157 /* C89/C99 say they're macros. Make them happy. */ 158 #define stdin stdin 159 #define stdout stdout 160 #define stderr stderr 161 162 __BEGIN_NAMESPACE_STD 163 /* Remove file FILENAME. */ 164 extern int remove (__const char *__filename) __THROW; 165 /* Rename file OLD to NEW. */ 166 extern int rename (__const char *__old, __const char *__new) __THROW; 167 __END_NAMESPACE_STD 168 169 170 __BEGIN_NAMESPACE_STD 171 /* Create a temporary file and open it read/write. */ 172 #ifndef __USE_FILE_OFFSET64 173 extern FILE *tmpfile (void) __THROW; 174 #else 175 # ifdef __REDIRECT 176 extern FILE *__REDIRECT (tmpfile, (void) __THROW, tmpfile64); 177 # else 178 # define tmpfile tmpfile64 179 # endif 180 #endif 181 182 /* Generate a temporary filename. */ 183 extern char *tmpnam (char *__s) __THROW; 184 __END_NAMESPACE_STD 185 186 #ifdef __USE_LARGEFILE64 187 extern FILE *tmpfile64 (void) __THROW; 188 #endif 189 190 #ifdef __USE_MISC 191 /* This is the reentrant variant of `tmpnam'. The only difference is 192 that it does not allow S to be NULL. */ 193 extern char *tmpnam_r (char *__s) __THROW; 194 #endif 195 196 197 #if defined __USE_SVID || defined __USE_XOPEN 198 /* Generate a unique temporary filename using up to five characters of PFX 199 if it is not NULL. The directory to put this file in is searched for 200 as follows: First the environment variable "TMPDIR" is checked. 201 If it contains the name of a writable directory, that directory is used. 202 If not and if DIR is not NULL, that value is checked. If that fails, 203 P_tmpdir is tried and finally "/tmp". The storage for the filename 204 is allocated by `malloc'. */ 205 extern char *tempnam (__const char *__dir, __const char *__pfx) 206 __THROW __attribute_malloc__; 207 #endif 208 209 210 __BEGIN_NAMESPACE_STD 211 /* Close STREAM. */ 212 extern int fclose (FILE *__stream) __THROW; 213 /* Flush STREAM, or all streams if STREAM is NULL. */ 214 extern int fflush (FILE *__stream) __THROW; 215 __END_NAMESPACE_STD 216 217 #ifdef __USE_MISC 218 /* Faster versions when locking is not required. */ 219 extern int fflush_unlocked (FILE *__stream) __THROW; 220 #endif 221 222 #ifdef __USE_GNU 223 /* Close all streams. */ 224 extern int fcloseall (void) __THROW; 225 #endif 226 227 228 __BEGIN_NAMESPACE_STD 229 #ifndef __USE_FILE_OFFSET64 230 /* Open a file and create a new stream for it. */ 231 extern FILE *fopen (__const char *__restrict __filename, 232 __const char *__restrict __modes) __THROW; 233 /* Open a file, replacing an existing stream with it. */ 234 extern FILE *freopen (__const char *__restrict __filename, 235 __const char *__restrict __modes, 236 FILE *__restrict __stream) __THROW; 237 #else 238 # ifdef __REDIRECT 239 extern FILE *__REDIRECT (fopen, (__const char *__restrict __filename, 240 __const char *__restrict __modes) __THROW, 241 fopen64); 242 extern FILE *__REDIRECT (freopen, (__const char *__restrict __filename, 243 __const char *__restrict __modes, 244 FILE *__restrict __stream) __THROW, 245 freopen64); 246 # else 247 # define fopen fopen64 248 # define freopen freopen64 249 # endif 250 #endif 251 __END_NAMESPACE_STD 252 #ifdef __USE_LARGEFILE64 253 extern FILE *fopen64 (__const char *__restrict __filename, 254 __const char *__restrict __modes) __THROW; 255 extern FILE *freopen64 (__const char *__restrict __filename, 256 __const char *__restrict __modes, 257 FILE *__restrict __stream) __THROW; 258 #endif 259 260 #ifdef __USE_POSIX 261 /* Create a new stream that refers to an existing system file descriptor. */ 262 extern FILE *fdopen (int __fd, __const char *__modes) __THROW; 263 #endif 264 265 #ifdef __USE_GNU 266 /* Create a new stream that refers to the given magic cookie, 267 and uses the given functions for input and output. */ 268 extern FILE *fopencookie (void *__restrict __magic_cookie, 269 __const char *__restrict __modes, 270 _IO_cookie_io_functions_t __io_funcs) __THROW; 271 272 /* Create a new stream that refers to a memory buffer. */ 273 extern FILE *fmemopen (void *__s, size_t __len, __const char *__modes) __THROW; 274 275 /* Open a stream that writes into a malloc'd buffer that is expanded as 276 necessary. *BUFLOC and *SIZELOC are updated with the buffer's location 277 and the number of characters written on fflush or fclose. */ 278 extern FILE *open_memstream (char **__restrict __bufloc, 279 size_t *__restrict __sizeloc) __THROW; 280 #endif 281 282 283 __BEGIN_NAMESPACE_STD 284 /* If BUF is NULL, make STREAM unbuffered. 285 Else make it use buffer BUF, of size BUFSIZ. */ 286 extern void setbuf (FILE *__restrict __stream, char *__restrict __buf) __THROW; 287 /* Make STREAM use buffering mode MODE. 288 If BUF is not NULL, use N bytes of it for buffering; 289 else allocate an internal buffer N bytes long. */ 290 extern int setvbuf (FILE *__restrict __stream, char *__restrict __buf, 291 int __modes, size_t __n) __THROW; 292 __END_NAMESPACE_STD 293 294 #ifdef __USE_BSD 295 /* If BUF is NULL, make STREAM unbuffered. 296 Else make it use SIZE bytes of BUF for buffering. */ 297 extern void setbuffer (FILE *__restrict __stream, char *__restrict __buf, 298 size_t __size) __THROW; 299 300 /* Make STREAM line-buffered. */ 301 extern void setlinebuf (FILE *__stream) __THROW; 302 #endif 303 304 305 __BEGIN_NAMESPACE_STD 306 /* Write formatted output to STREAM. */ 307 extern int fprintf (FILE *__restrict __stream, 308 __const char *__restrict __format, ...) __THROW; 309 /* Write formatted output to stdout. */ 310 extern int printf (__const char *__restrict __format, ...) __THROW; 311 /* Write formatted output to S. */ 312 extern int sprintf (char *__restrict __s, 313 __const char *__restrict __format, ...) __THROW; 314 315 /* Write formatted output to S from argument list ARG. */ 316 extern int vfprintf (FILE *__restrict __s, __const char *__restrict __format, 317 _G_va_list __arg) __THROW; 318 /* Write formatted output to stdout from argument list ARG. */ 319 extern int vprintf (__const char *__restrict __format, _G_va_list __arg) 320 __THROW; 321 /* Write formatted output to S from argument list ARG. */ 322 extern int vsprintf (char *__restrict __s, __const char *__restrict __format, 323 _G_va_list __arg) __THROW; 324 __END_NAMESPACE_STD 325 326 #if defined __USE_BSD || defined __USE_ISOC99 || defined __USE_UNIX98 327 __BEGIN_NAMESPACE_C99 328 /* Maximum chars of output to write in MAXLEN. */ 329 extern int snprintf (char *__restrict __s, size_t __maxlen, 330 __const char *__restrict __format, ...) 331 __THROW __attribute__ ((__format__ (__printf__, 3, 4))); 332 333 extern int vsnprintf (char *__restrict __s, size_t __maxlen, 334 __const char *__restrict __format, _G_va_list __arg) 335 __THROW __attribute__ ((__format__ (__printf__, 3, 0))); 336 __END_NAMESPACE_C99 337 #endif 338 339 #ifdef __USE_GNU 340 /* Write formatted output to a string dynamically allocated with `malloc'. 341 Store the address of the string in *PTR. */ 342 extern int vasprintf (char **__restrict __ptr, __const char *__restrict __f, 343 _G_va_list __arg) 344 __THROW __attribute__ ((__format__ (__printf__, 2, 0))); 345 extern int __asprintf (char **__restrict __ptr, 346 __const char *__restrict __fmt, ...) 347 __THROW __attribute__ ((__format__ (__printf__, 2, 3))); 348 extern int asprintf (char **__restrict __ptr, 349 __const char *__restrict __fmt, ...) 350 __THROW __attribute__ ((__format__ (__printf__, 2, 3))); 351 352 /* Write formatted output to a file descriptor. */ 353 extern int vdprintf (int __fd, __const char *__restrict __fmt, 354 _G_va_list __arg) 355 __THROW __attribute__ ((__format__ (__printf__, 2, 0))); 356 extern int dprintf (int __fd, __const char *__restrict __fmt, ...) 357 __THROW __attribute__ ((__format__ (__printf__, 2, 3))); 358 #endif 359 360 361 __BEGIN_NAMESPACE_STD 362 /* Read formatted input from STREAM. */ 363 extern int fscanf (FILE *__restrict __stream, 364 __const char *__restrict __format, ...) __THROW; 365 /* Read formatted input from stdin. */ 366 extern int scanf (__const char *__restrict __format, ...) __THROW; 367 /* Read formatted input from S. */ 368 extern int sscanf (__const char *__restrict __s, 369 __const char *__restrict __format, ...) __THROW; 370 __END_NAMESPACE_STD 371 372 #ifdef __USE_ISOC99 373 __BEGIN_NAMESPACE_C99 374 /* Read formatted input from S into argument list ARG. */ 375 extern int vfscanf (FILE *__restrict __s, __const char *__restrict __format, 376 _G_va_list __arg) 377 __THROW __attribute__ ((__format__ (__scanf__, 2, 0))); 378 379 /* Read formatted input from stdin into argument list ARG. */ 380 extern int vscanf (__const char *__restrict __format, _G_va_list __arg) 381 __THROW __attribute__ ((__format__ (__scanf__, 1, 0))); 382 383 /* Read formatted input from S into argument list ARG. */ 384 extern int vsscanf (__const char *__restrict __s, 385 __const char *__restrict __format, _G_va_list __arg) 386 __THROW __attribute__ ((__format__ (__scanf__, 2, 0))); 387 __END_NAMESPACE_C99 388 #endif /* Use ISO C9x. */ 389 390 391 __BEGIN_NAMESPACE_STD 392 /* Read a character from STREAM. */ 393 extern int fgetc (FILE *__stream) __THROW; 394 extern int getc (FILE *__stream) __THROW; 395 396 /* Read a character from stdin. */ 397 extern int getchar (void) __THROW; 398 __END_NAMESPACE_STD 399 400 /* The C standard explicitly says this is a macro, so we always do the 401 optimization for it. */ 402 #define getc(_fp) _IO_getc (_fp) 403 404 #if defined __USE_POSIX || defined __USE_MISC 405 /* These are defined in POSIX.1:1996. */ 406 extern int getc_unlocked (FILE *__stream) __THROW; 407 extern int getchar_unlocked (void) __THROW; 408 #endif /* Use POSIX or MISC. */ 409 410 #ifdef __USE_MISC 411 /* Faster version when locking is not necessary. */ 412 extern int fgetc_unlocked (FILE *__stream) __THROW; 413 #endif /* Use MISC. */ 414 415 416 __BEGIN_NAMESPACE_STD 417 /* Write a character to STREAM. */ 418 extern int fputc (int __c, FILE *__stream) __THROW; 419 extern int putc (int __c, FILE *__stream) __THROW; 420 421 /* Write a character to stdout. */ 422 extern int putchar (int __c) __THROW; 423 __END_NAMESPACE_STD 424 425 /* The C standard explicitly says this can be a macro, 426 so we always do the optimization for it. */ 427 #define putc(_ch, _fp) _IO_putc (_ch, _fp) 428 429 #ifdef __USE_MISC 430 /* Faster version when locking is not necessary. */ 431 extern int fputc_unlocked (int __c, FILE *__stream) __THROW; 432 #endif /* Use MISC. */ 433 434 #if defined __USE_POSIX || defined __USE_MISC 435 /* These are defined in POSIX.1:1996. */ 436 extern int putc_unlocked (int __c, FILE *__stream) __THROW; 437 extern int putchar_unlocked (int __c) __THROW; 438 #endif /* Use POSIX or MISC. */ 439 440 441 #if defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN 442 /* Get a word (int) from STREAM. */ 443 extern int getw (FILE *__stream) __THROW; 444 445 /* Write a word (int) to STREAM. */ 446 extern int putw (int __w, FILE *__stream) __THROW; 447 #endif 448 449 450 __BEGIN_NAMESPACE_STD 451 /* Get a newline-terminated string of finite length from STREAM. */ 452 extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream) 453 __THROW; 454 455 /* Get a newline-terminated string from stdin, removing the newline. 456 DO NOT USE THIS FUNCTION!! There is no limit on how much it will read. */ 457 extern char *gets (char *__s) __THROW; 458 __END_NAMESPACE_STD 459 460 #ifdef __USE_GNU 461 /* This function does the same as `fgets' but does not lock the stream. */ 462 extern char *fgets_unlocked (char *__restrict __s, int __n, 463 FILE *__restrict __stream) __THROW; 464 #endif 465 466 467 #ifdef __USE_GNU 468 /* Read up to (and including) a DELIMITER from STREAM into *LINEPTR 469 (and null-terminate it). *LINEPTR is a pointer returned from malloc (or 470 NULL), pointing to *N characters of space. It is realloc'd as 471 necessary. Returns the number of characters read (not including the 472 null terminator), or -1 on error or EOF. */ 473 extern _IO_ssize_t __getdelim (char **__restrict __lineptr, 474 size_t *__restrict __n, int __delimiter, 475 FILE *__restrict __stream) __THROW; 476 extern _IO_ssize_t getdelim (char **__restrict __lineptr, 477 size_t *__restrict __n, int __delimiter, 478 FILE *__restrict __stream) __THROW; 479 480 /* Like `getdelim', but reads up to a newline. */ 481 extern _IO_ssize_t getline (char **__restrict __lineptr, 482 size_t *__restrict __n, 483 FILE *__restrict __stream) __THROW; 484 #endif 485 486 487 __BEGIN_NAMESPACE_STD 488 /* Write a string to STREAM. */ 489 extern int fputs (__const char *__restrict __s, FILE *__restrict __stream) 490 __THROW; 491 492 /* Write a string, followed by a newline, to stdout. */ 493 extern int puts (__const char *__s) __THROW; 494 495 496 /* Push a character back onto the input buffer of STREAM. */ 497 extern int ungetc (int __c, FILE *__stream) __THROW; 498 499 500 /* Read chunks of generic data from STREAM. */ 501 extern size_t fread (void *__restrict __ptr, size_t __size, 502 size_t __n, FILE *__restrict __stream) __THROW; 503 /* Write chunks of generic data to STREAM. */ 504 extern size_t fwrite (__const void *__restrict __ptr, size_t __size, 505 size_t __n, FILE *__restrict __s) __THROW; 506 __END_NAMESPACE_STD 507 508 #ifdef __USE_GNU 509 /* This function does the same as `fputs' but does not lock the stream. */ 510 extern int fputs_unlocked (__const char *__restrict __s, 511 FILE *__restrict __stream) __THROW; 512 #endif 513 514 #ifdef __USE_MISC 515 /* Faster versions when locking is not necessary. */ 516 extern size_t fread_unlocked (void *__restrict __ptr, size_t __size, 517 size_t __n, FILE *__restrict __stream) __THROW; 518 extern size_t fwrite_unlocked (__const void *__restrict __ptr, size_t __size, 519 size_t __n, FILE *__restrict __stream) __THROW; 520 #endif 521 522 523 __BEGIN_NAMESPACE_STD 524 /* Seek to a certain position on STREAM. */ 525 extern int fseek (FILE *__stream, long int __off, int __whence) __THROW; 526 /* Return the current position of STREAM. */ 527 extern long int ftell (FILE *__stream) __THROW; 528 /* Rewind to the beginning of STREAM. */ 529 extern void rewind (FILE *__stream) __THROW; 530 __END_NAMESPACE_STD 531 532 /* The Single Unix Specification, Version 2, specifies an alternative, 533 more adequate interface for the two functions above which deal with 534 file offset. `long int' is not the right type. These definitions 535 are originally defined in the Large File Support API. */ 536 537 #ifdef __USE_LARGEFILE 538 # ifndef __USE_FILE_OFFSET64 539 /* Seek to a certain position on STREAM. */ 540 extern int fseeko (FILE *__stream, off_t __off, int __whence) __THROW; 541 /* Return the current position of STREAM. */ 542 extern off_t ftello (FILE *__stream) __THROW; 543 # else 544 # ifdef __REDIRECT 545 extern int __REDIRECT (fseeko, 546 (FILE *__stream, __off64_t __off, int __whence) __THROW, 547 fseeko64); 548 extern __off64_t __REDIRECT (ftello, (FILE *__stream) __THROW, ftello64); 549 # else 550 # define fseeko fseeko64 551 # define ftello ftello64 552 # endif 553 # endif 554 #endif 555 556 __BEGIN_NAMESPACE_STD 557 #ifndef __USE_FILE_OFFSET64 558 /* Get STREAM's position. */ 559 extern int fgetpos (FILE *__restrict __stream, fpos_t *__restrict __pos) 560 __THROW; 561 /* Set STREAM's position. */ 562 extern int fsetpos (FILE *__stream, __const fpos_t *__pos) __THROW; 563 #else 564 # ifdef __REDIRECT 565 extern int __REDIRECT (fgetpos, (FILE *__restrict __stream, 566 fpos_t *__restrict __pos) __THROW, fgetpos64); 567 extern int __REDIRECT (fsetpos, 568 (FILE *__stream, __const fpos_t *__pos) __THROW, 569 fsetpos64); 570 # else 571 # define fgetpos fgetpos64 572 # define fsetpos fsetpos64 573 # endif 574 #endif 575 __END_NAMESPACE_STD 576 577 #ifdef __USE_LARGEFILE64 578 extern int fseeko64 (FILE *__stream, __off64_t __off, int __whence) __THROW; 579 extern __off64_t ftello64 (FILE *__stream) __THROW; 580 extern int fgetpos64 (FILE *__restrict __stream, fpos64_t *__restrict __pos) 581 __THROW; 582 extern int fsetpos64 (FILE *__stream, __const fpos64_t *__pos) __THROW; 583 #endif 584 585 __BEGIN_NAMESPACE_STD 586 /* Clear the error and EOF indicators for STREAM. */ 587 extern void clearerr (FILE *__stream) __THROW; 588 /* Return the EOF indicator for STREAM. */ 589 extern int feof (FILE *__stream) __THROW; 590 /* Return the error indicator for STREAM. */ 591 extern int ferror (FILE *__stream) __THROW; 592 __END_NAMESPACE_STD 593 594 #ifdef __USE_MISC 595 /* Faster versions when locking is not required. */ 596 extern void clearerr_unlocked (FILE *__stream) __THROW; 597 extern int feof_unlocked (FILE *__stream) __THROW; 598 extern int ferror_unlocked (FILE *__stream) __THROW; 599 #endif 600 601 602 __BEGIN_NAMESPACE_STD 603 /* Print a message describing the meaning of the value of errno. */ 604 extern void perror (__const char *__s) __THROW; 605 __END_NAMESPACE_STD 606 607 /* Provide the declarations for `sys_errlist' and `sys_nerr' if they 608 are available on this system. Even if available, these variables 609 should not be used directly. The `strerror' function provides 610 all the necessary functionality. */ 611 #include <bits/sys_errlist.h> 612 613 614 #ifdef __USE_POSIX 615 /* Return the system file descriptor for STREAM. */ 616 extern int fileno (FILE *__stream) __THROW; 617 #endif /* Use POSIX. */ 618 619 #ifdef __USE_MISC 620 /* Faster version when locking is not required. */ 621 extern int fileno_unlocked (FILE *__stream) __THROW; 622 #endif 623 624 625 #if (defined __USE_POSIX2 || defined __USE_SVID || defined __USE_BSD || \ 626 defined __USE_MISC) 627 /* Create a new stream connected to a pipe running the given command. */ 628 extern FILE *popen (__const char *__command, __const char *__modes) __THROW; 629 630 /* Close a stream opened by popen and return the status of its child. */ 631 extern int pclose (FILE *__stream) __THROW; 632 #endif 633 634 635 #ifdef __USE_POSIX 636 /* Return the name of the controlling terminal. */ 637 extern char *ctermid (char *__s) __THROW; 638 #endif /* Use POSIX. */ 639 640 641 #ifdef __USE_XOPEN 642 /* Return the name of the current user. */ 643 extern char *cuserid (char *__s) __THROW; 644 #endif /* Use X/Open, but not issue 6. */ 645 646 647 #ifdef __USE_GNU 648 struct obstack; /* See <obstack.h>. */ 649 650 /* Write formatted output to an obstack. */ 651 extern int obstack_printf (struct obstack *__restrict __obstack, 652 __const char *__restrict __format, ...) 653 __THROW __attribute__ ((__format__ (__printf__, 2, 3))); 654 extern int obstack_vprintf (struct obstack *__restrict __obstack, 655 __const char *__restrict __format, 656 _G_va_list __args) 657 __THROW __attribute__ ((__format__ (__printf__, 2, 0))); 658 #endif /* Use GNU. */ 659 660 661 #if defined __USE_POSIX || defined __USE_MISC 662 /* These are defined in POSIX.1:1996. */ 663 664 /* Acquire ownership of STREAM. */ 665 extern void flockfile (FILE *__stream) __THROW; 666 667 /* Try to acquire ownership of STREAM but do not block if it is not 668 possible. */ 669 extern int ftrylockfile (FILE *__stream) __THROW; 670 671 /* Relinquish the ownership granted for STREAM. */ 672 extern void funlockfile (FILE *__stream) __THROW; 673 #endif /* POSIX || misc */ 674 675 #if defined __USE_XOPEN && !defined __USE_XOPEN2K && !defined __USE_GNU 676 /* The X/Open standard requires some functions and variables to be 677 declared here which do not belong into this header. But we have to 678 follow. In GNU mode we don't do this nonsense. */ 679 # define __need_getopt 680 # include <getopt.h> 681 #endif /* X/Open, but not issue 6 and not for GNU. */ 682 683 /* If we are compiling with optimizing read this file. It contains 684 several optimizing inline functions and macros. */ 685 #ifdef __USE_EXTERN_INLINES 686 # include <bits/stdio.h> 687 #endif 688 689 __END_DECLS 690 691 #endif /* <stdio.h> included. */ 692 693 #endif /* !_STDIO_H */ 694