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  1. /* Define ISO C stdio on top of C++ iostreams.
  2.    Copyright (C) 1991, 1994-2007, 2008, 2009 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. #if !defined __need_FILE && !defined __need___FILE
  27. # define _STDIO_H   1
  28. # include <features.h>
  29.  
  30. __BEGIN_DECLS
  31.  
  32. # define __need_size_t
  33. # define __need_NULL
  34. # include <stddef.h>
  35.  
  36. # include <bits/types.h>
  37. # define __need_FILE
  38. # define __need___FILE
  39. #endif /* Don't need FILE.  */
  40.  
  41.  
  42. #if !defined __FILE_defined && defined __need_FILE
  43.  
  44. /* Define outside of namespace so the C++ is happy.  */
  45. struct _IO_FILE;
  46.  
  47. __BEGIN_NAMESPACE_STD
  48. /* The opaque type of streams.  This is the definition used elsewhere.  */
  49. typedef struct _IO_FILE FILE;
  50. __END_NAMESPACE_STD
  51. #if defined __USE_LARGEFILE64 || defined __USE_SVID || defined __USE_POSIX \
  52.     || defined __USE_BSD || defined __USE_ISOC99 || defined __USE_XOPEN \
  53.     || defined __USE_POSIX2
  54. __USING_NAMESPACE_STD(FILE)
  55. #endif
  56.  
  57. # define __FILE_defined 1
  58. #endif /* FILE not defined.  */
  59. #undef  __need_FILE
  60.  
  61.  
  62. #if !defined ____FILE_defined && defined __need___FILE
  63.  
  64. /* The opaque type of streams.  This is the definition used elsewhere.  */
  65. typedef struct _IO_FILE __FILE;
  66.  
  67. # define ____FILE_defined   1
  68. #endif /* __FILE not defined.  */
  69. #undef  __need___FILE
  70.  
  71.  
  72. #ifdef  _STDIO_H
  73. #define _STDIO_USES_IOSTREAM
  74.  
  75. #include <libio.h>
  76.  
  77. #ifdef __USE_XOPEN
  78. # ifdef __GNUC__
  79. #  ifndef _VA_LIST_DEFINED
  80. typedef _G_va_list va_list;
  81. #   define _VA_LIST_DEFINED
  82. #  endif
  83. # else
  84. #  include <stdarg.h>
  85. # endif
  86. #endif
  87.  
  88. /* The type of the second argument to `fgetpos' and `fsetpos'.  */
  89. __BEGIN_NAMESPACE_STD
  90. #ifndef __USE_FILE_OFFSET64
  91. typedef _G_fpos_t fpos_t;
  92. #else
  93. typedef _G_fpos64_t fpos_t;
  94. #endif
  95. __END_NAMESPACE_STD
  96. #ifdef __USE_LARGEFILE64
  97. typedef _G_fpos64_t fpos64_t;
  98. #endif
  99.  
  100. /* The possibilities for the third argument to `setvbuf'.  */
  101. #define _IOFBF 0        /* Fully buffered.  */
  102. #define _IOLBF 1        /* Line buffered.  */
  103. #define _IONBF 2        /* No buffering.  */
  104.  
  105.  
  106. /* Default buffer size.  */
  107. #ifndef BUFSIZ
  108. # define BUFSIZ _IO_BUFSIZ
  109. #endif
  110.  
  111.  
  112. /* End of file character.
  113.    Some things throughout the library rely on this being -1.  */
  114. #ifndef EOF
  115. # define EOF (-1)
  116. #endif
  117.  
  118.  
  119. /* The possibilities for the third argument to `fseek'.
  120.    These values should not be changed.  */
  121. #define SEEK_SET    0   /* Seek from beginning of file.  */
  122. #define SEEK_CUR    1   /* Seek from current position.  */
  123. #define SEEK_END    2   /* Seek from end of file.  */
  124.  
  125.  
  126. #if defined __USE_SVID || defined __USE_XOPEN
  127. /* Default path prefix for `tempnam' and `tmpnam'.  */
  128. # define P_tmpdir   "/tmp"
  129. #endif
  130.  
  131.  
  132. /* Get the values:
  133.    L_tmpnam How long an array of chars must be to be passed to `tmpnam'.
  134.    TMP_MAX  The minimum number of unique filenames generated by tmpnam
  135.         (and tempnam when it uses tmpnam's name space),
  136.         or tempnam (the two are separate).
  137.    L_ctermid    How long an array to pass to `ctermid'.
  138.    L_cuserid    How long an array to pass to `cuserid'.
  139.    FOPEN_MAX    Minimum number of files that can be open at once.
  140.    FILENAME_MAX Maximum length of a filename.  */
  141. #include <bits/stdio_lim.h>
  142.  
  143.  
  144. /* Standard streams.  */
  145. extern struct _IO_FILE *stdin;      /* Standard input stream.  */
  146. extern struct _IO_FILE *stdout;     /* Standard output stream.  */
  147. extern struct _IO_FILE *stderr;     /* Standard error output stream.  */
  148. /* C89/C99 say they're macros.  Make them happy.  */
  149. #define stdin stdin
  150. #define stdout stdout
  151. #define stderr stderr
  152.  
  153. __BEGIN_NAMESPACE_STD
  154. /* Remove file FILENAME.  */
  155. extern int remove (__const char *__filename) __THROW;
  156. /* Rename file OLD to NEW.  */
  157. extern int rename (__const char *__old, __const char *__new) __THROW;
  158. __END_NAMESPACE_STD
  159.  
  160. #ifdef __USE_ATFILE
  161. /* Rename file OLD relative to OLDFD to NEW relative to NEWFD.  */
  162. extern int renameat (int __oldfd, __const char *__old, int __newfd,
  163.              __const char *__new) __THROW;
  164. #endif
  165.  
  166. __BEGIN_NAMESPACE_STD
  167. /* Create a temporary file and open it read/write.
  168.  
  169.    This function is a possible cancellation points and therefore not
  170.    marked with __THROW.  */
  171. #ifndef __USE_FILE_OFFSET64
  172. extern FILE *tmpfile (void) __wur;
  173. #else
  174. # ifdef __REDIRECT
  175. extern FILE *__REDIRECT (tmpfile, (void), tmpfile64) __wur;
  176. # else
  177. #  define tmpfile tmpfile64
  178. # endif
  179. #endif
  180.  
  181. #ifdef __USE_LARGEFILE64
  182. extern FILE *tmpfile64 (void) __wur;
  183. #endif
  184.  
  185. /* Generate a temporary filename.  */
  186. extern char *tmpnam (char *__s) __THROW __wur;
  187. __END_NAMESPACE_STD
  188.  
  189. #ifdef __USE_MISC
  190. /* This is the reentrant variant of `tmpnam'.  The only difference is
  191.    that it does not allow S to be NULL.  */
  192. extern char *tmpnam_r (char *__s) __THROW __wur;
  193. #endif
  194.  
  195.  
  196. #if defined __USE_SVID || defined __USE_XOPEN
  197. /* Generate a unique temporary filename using up to five characters of PFX
  198.    if it is not NULL.  The directory to put this file in is searched for
  199.    as follows: First the environment variable "TMPDIR" is checked.
  200.    If it contains the name of a writable directory, that directory is used.
  201.    If not and if DIR is not NULL, that value is checked.  If that fails,
  202.    P_tmpdir is tried and finally "/tmp".  The storage for the filename
  203.    is allocated by `malloc'.  */
  204. extern char *tempnam (__const char *__dir, __const char *__pfx)
  205.      __THROW __attribute_malloc__ __wur;
  206. #endif
  207.  
  208.  
  209. __BEGIN_NAMESPACE_STD
  210. /* Close STREAM.
  211.  
  212.    This function is a possible cancellation point and therefore not
  213.    marked with __THROW.  */
  214. extern int fclose (FILE *__stream);
  215. /* Flush STREAM, or all streams if STREAM is NULL.
  216.  
  217.    This function is a possible cancellation point and therefore not
  218.    marked with __THROW.  */
  219. extern int fflush (FILE *__stream);
  220. __END_NAMESPACE_STD
  221.  
  222. #ifdef __USE_MISC
  223. /* Faster versions when locking is not required.
  224.  
  225.    This function is not part of POSIX and therefore no official
  226.    cancellation point.  But due to similarity with an POSIX interface
  227.    or due to the implementation it is a cancellation point and
  228.    therefore not marked with __THROW.  */
  229. extern int fflush_unlocked (FILE *__stream);
  230. #endif
  231.  
  232. #ifdef __USE_GNU
  233. /* Close all streams.
  234.  
  235.    This function is not part of POSIX and therefore no official
  236.    cancellation point.  But due to similarity with an POSIX interface
  237.    or due to the implementation it is a cancellation point and
  238.    therefore not marked with __THROW.  */
  239. extern int fcloseall (void);
  240. #endif
  241.  
  242.  
  243. __BEGIN_NAMESPACE_STD
  244. #ifndef __USE_FILE_OFFSET64
  245. /* Open a file and create a new stream for it.
  246.  
  247.    This function is a possible cancellation point and therefore not
  248.    marked with __THROW.  */
  249. extern FILE *fopen (__const char *__restrict __filename,
  250.             __const char *__restrict __modes) __wur;
  251. /* Open a file, replacing an existing stream with it.
  252.  
  253.    This function is a possible cancellation point and therefore not
  254.    marked with __THROW.  */
  255. extern FILE *freopen (__const char *__restrict __filename,
  256.               __const char *__restrict __modes,
  257.               FILE *__restrict __stream) __wur;
  258. #else
  259. # ifdef __REDIRECT
  260. extern FILE *__REDIRECT (fopen, (__const char *__restrict __filename,
  261.                  __const char *__restrict __modes), fopen64)
  262.   __wur;
  263. extern FILE *__REDIRECT (freopen, (__const char *__restrict __filename,
  264.                    __const char *__restrict __modes,
  265.                    FILE *__restrict __stream), freopen64)
  266.   __wur;
  267. # else
  268. #  define fopen fopen64
  269. #  define freopen freopen64
  270. # endif
  271. #endif
  272. __END_NAMESPACE_STD
  273. #ifdef __USE_LARGEFILE64
  274. extern FILE *fopen64 (__const char *__restrict __filename,
  275.               __const char *__restrict __modes) __wur;
  276. extern FILE *freopen64 (__const char *__restrict __filename,
  277.             __const char *__restrict __modes,
  278.             FILE *__restrict __stream) __wur;
  279. #endif
  280.  
  281. #ifdef  __USE_POSIX
  282. /* Create a new stream that refers to an existing system file descriptor.  */
  283. extern FILE *fdopen (int __fd, __const char *__modes) __THROW __wur;
  284. #endif
  285.  
  286. #ifdef  __USE_GNU
  287. /* Create a new stream that refers to the given magic cookie,
  288.    and uses the given functions for input and output.  */
  289. extern FILE *fopencookie (void *__restrict __magic_cookie,
  290.               __const char *__restrict __modes,
  291.               _IO_cookie_io_functions_t __io_funcs) __THROW __wur;
  292. #endif
  293.  
  294. #ifdef __USE_XOPEN2K8
  295. /* Create a new stream that refers to a memory buffer.  */
  296. extern FILE *fmemopen (void *__s, size_t __len, __const char *__modes)
  297.   __THROW __wur;
  298.  
  299. /* Open a stream that writes into a malloc'd buffer that is expanded as
  300.    necessary.  *BUFLOC and *SIZELOC are updated with the buffer's location
  301.    and the number of characters written on fflush or fclose.  */
  302. extern FILE *open_memstream (char **__bufloc, size_t *__sizeloc) __THROW __wur;
  303. #endif
  304.  
  305.  
  306. __BEGIN_NAMESPACE_STD
  307. /* If BUF is NULL, make STREAM unbuffered.
  308.    Else make it use buffer BUF, of size BUFSIZ.  */
  309. extern void setbuf (FILE *__restrict __stream, char *__restrict __buf) __THROW;
  310. /* Make STREAM use buffering mode MODE.
  311.    If BUF is not NULL, use N bytes of it for buffering;
  312.    else allocate an internal buffer N bytes long.  */
  313. extern int setvbuf (FILE *__restrict __stream, char *__restrict __buf,
  314.             int __modes, size_t __n) __THROW;
  315. __END_NAMESPACE_STD
  316.  
  317. #ifdef  __USE_BSD
  318. /* If BUF is NULL, make STREAM unbuffered.
  319.    Else make it use SIZE bytes of BUF for buffering.  */
  320. extern void setbuffer (FILE *__restrict __stream, char *__restrict __buf,
  321.                size_t __size) __THROW;
  322.  
  323. /* Make STREAM line-buffered.  */
  324. extern void setlinebuf (FILE *__stream) __THROW;
  325. #endif
  326.  
  327.  
  328. __BEGIN_NAMESPACE_STD
  329. /* Write formatted output to STREAM.
  330.  
  331.    This function is a possible cancellation point and therefore not
  332.    marked with __THROW.  */
  333. extern int fprintf (FILE *__restrict __stream,
  334.             __const char *__restrict __format, ...);
  335. /* Write formatted output to stdout.
  336.  
  337.    This function is a possible cancellation point and therefore not
  338.    marked with __THROW.  */
  339. extern int printf (__const char *__restrict __format, ...);
  340. /* Write formatted output to S.  */
  341. extern int sprintf (char *__restrict __s,
  342.             __const char *__restrict __format, ...) __THROW;
  343.  
  344. /* Write formatted output to S from argument list ARG.
  345.  
  346.    This function is a possible cancellation point and therefore not
  347.    marked with __THROW.  */
  348. extern int vfprintf (FILE *__restrict __s, __const char *__restrict __format,
  349.              _G_va_list __arg);
  350. /* Write formatted output to stdout from argument list ARG.
  351.  
  352.    This function is a possible cancellation point and therefore not
  353.    marked with __THROW.  */
  354. extern int vprintf (__const char *__restrict __format, _G_va_list __arg);
  355. /* Write formatted output to S from argument list ARG.  */
  356. extern int vsprintf (char *__restrict __s, __const char *__restrict __format,
  357.              _G_va_list __arg) __THROW;
  358. __END_NAMESPACE_STD
  359.  
  360. #if defined __USE_BSD || defined __USE_ISOC99 || defined __USE_UNIX98
  361. __BEGIN_NAMESPACE_C99
  362. /* Maximum chars of output to write in MAXLEN.  */
  363. extern int snprintf (char *__restrict __s, size_t __maxlen,
  364.              __const char *__restrict __format, ...)
  365.      __THROW __attribute__ ((__format__ (__printf__, 3, 4)));
  366.  
  367. extern int vsnprintf (char *__restrict __s, size_t __maxlen,
  368.               __const char *__restrict __format, _G_va_list __arg)
  369.      __THROW __attribute__ ((__format__ (__printf__, 3, 0)));
  370. __END_NAMESPACE_C99
  371. #endif
  372.  
  373. #ifdef __USE_GNU
  374. /* Write formatted output to a string dynamically allocated with `malloc'.
  375.    Store the address of the string in *PTR.  */
  376. extern int vasprintf (char **__restrict __ptr, __const char *__restrict __f,
  377.               _G_va_list __arg)
  378.      __THROW __attribute__ ((__format__ (__printf__, 2, 0))) __wur;
  379. extern int __asprintf (char **__restrict __ptr,
  380.                __const char *__restrict __fmt, ...)
  381.      __THROW __attribute__ ((__format__ (__printf__, 2, 3))) __wur;
  382. extern int asprintf (char **__restrict __ptr,
  383.              __const char *__restrict __fmt, ...)
  384.      __THROW __attribute__ ((__format__ (__printf__, 2, 3))) __wur;
  385. #endif
  386.  
  387. #ifdef __USE_XOPEN2K8
  388. /* Write formatted output to a file descriptor.
  389.  
  390.    These functions are not part of POSIX and therefore no official
  391.    cancellation point.  But due to similarity with an POSIX interface
  392.    or due to the implementation they are cancellation points and
  393.    therefore not marked with __THROW.  */
  394. extern int vdprintf (int __fd, __const char *__restrict __fmt,
  395.              _G_va_list __arg)
  396.      __attribute__ ((__format__ (__printf__, 2, 0)));
  397. extern int dprintf (int __fd, __const char *__restrict __fmt, ...)
  398.      __attribute__ ((__format__ (__printf__, 2, 3)));
  399. #endif
  400.  
  401.  
  402. __BEGIN_NAMESPACE_STD
  403. /* Read formatted input from STREAM.
  404.  
  405.    This function is a possible cancellation point and therefore not
  406.    marked with __THROW.  */
  407. extern int fscanf (FILE *__restrict __stream,
  408.            __const char *__restrict __format, ...) __wur;
  409. /* Read formatted input from stdin.
  410.  
  411.    This function is a possible cancellation point and therefore not
  412.    marked with __THROW.  */
  413. extern int scanf (__const char *__restrict __format, ...) __wur;
  414. /* Read formatted input from S.  */
  415. extern int sscanf (__const char *__restrict __s,
  416.            __const char *__restrict __format, ...) __THROW;
  417.  
  418. #if defined __USE_ISOC99 && !defined __USE_GNU \
  419.     && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
  420.     && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
  421. # ifdef __REDIRECT
  422. /* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[
  423.    GNU extension which conflicts with valid %a followed by letter
  424.    s, S or [.  */
  425. extern int __REDIRECT (fscanf, (FILE *__restrict __stream,
  426.                 __const char *__restrict __format, ...),
  427.                __isoc99_fscanf) __wur;
  428. extern int __REDIRECT (scanf, (__const char *__restrict __format, ...),
  429.                __isoc99_scanf) __wur;
  430. extern int __REDIRECT (sscanf, (__const char *__restrict __s,
  431.                 __const char *__restrict __format, ...),
  432.                __isoc99_sscanf) __THROW;
  433. # else
  434. extern int __isoc99_fscanf (FILE *__restrict __stream,
  435.                 __const char *__restrict __format, ...) __wur;
  436. extern int __isoc99_scanf (__const char *__restrict __format, ...) __wur;
  437. extern int __isoc99_sscanf (__const char *__restrict __s,
  438.                 __const char *__restrict __format, ...) __THROW;
  439. #  define fscanf __isoc99_fscanf
  440. #  define scanf __isoc99_scanf
  441. #  define sscanf __isoc99_sscanf
  442. # endif
  443. #endif
  444.  
  445. __END_NAMESPACE_STD
  446.  
  447. #ifdef  __USE_ISOC99
  448. __BEGIN_NAMESPACE_C99
  449. /* Read formatted input from S into argument list ARG.
  450.  
  451.    This function is a possible cancellation point and therefore not
  452.    marked with __THROW.  */
  453. extern int vfscanf (FILE *__restrict __s, __const char *__restrict __format,
  454.             _G_va_list __arg)
  455.      __attribute__ ((__format__ (__scanf__, 2, 0))) __wur;
  456.  
  457. /* Read formatted input from stdin into argument list ARG.
  458.  
  459.    This function is a possible cancellation point and therefore not
  460.    marked with __THROW.  */
  461. extern int vscanf (__const char *__restrict __format, _G_va_list __arg)
  462.      __attribute__ ((__format__ (__scanf__, 1, 0))) __wur;
  463.  
  464. /* Read formatted input from S into argument list ARG.  */
  465. extern int vsscanf (__const char *__restrict __s,
  466.             __const char *__restrict __format, _G_va_list __arg)
  467.      __THROW __attribute__ ((__format__ (__scanf__, 2, 0)));
  468.  
  469. # if !defined __USE_GNU \
  470.      && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
  471.      && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
  472. #  ifdef __REDIRECT
  473. /* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[
  474.    GNU extension which conflicts with valid %a followed by letter
  475.    s, S or [.  */
  476. extern int __REDIRECT (vfscanf,
  477.                (FILE *__restrict __s,
  478.             __const char *__restrict __format, _G_va_list __arg),
  479.                __isoc99_vfscanf)
  480.      __attribute__ ((__format__ (__scanf__, 2, 0))) __wur;
  481. extern int __REDIRECT (vscanf, (__const char *__restrict __format,
  482.                 _G_va_list __arg), __isoc99_vscanf)
  483.      __attribute__ ((__format__ (__scanf__, 1, 0))) __wur;
  484. extern int __REDIRECT (vsscanf,
  485.                (__const char *__restrict __s,
  486.             __const char *__restrict __format, _G_va_list __arg),
  487.                __isoc99_vsscanf)
  488.      __THROW __attribute__ ((__format__ (__scanf__, 2, 0)));
  489. #  else
  490. extern int __isoc99_vfscanf (FILE *__restrict __s,
  491.                  __const char *__restrict __format,
  492.                  _G_va_list __arg) __wur;
  493. extern int __isoc99_vscanf (__const char *__restrict __format,
  494.                 _G_va_list __arg) __wur;
  495. extern int __isoc99_vsscanf (__const char *__restrict __s,
  496.                  __const char *__restrict __format,
  497.                  _G_va_list __arg) __THROW;
  498. #   define vfscanf __isoc99_vfscanf
  499. #   define vscanf __isoc99_vscanf
  500. #   define vsscanf __isoc99_vsscanf
  501. #  endif
  502. # endif
  503.  
  504. __END_NAMESPACE_C99
  505. #endif /* Use ISO C9x.  */
  506.  
  507.  
  508. __BEGIN_NAMESPACE_STD
  509. /* Read a character from STREAM.
  510.  
  511.    These functions are possible cancellation points and therefore not
  512.    marked with __THROW.  */
  513. extern int fgetc (FILE *__stream);
  514. extern int getc (FILE *__stream);
  515.  
  516. /* Read a character from stdin.
  517.  
  518.    This function is a possible cancellation point and therefore not
  519.    marked with __THROW.  */
  520. extern int getchar (void);
  521. __END_NAMESPACE_STD
  522.  
  523. /* The C standard explicitly says this is a macro, so we always do the
  524.    optimization for it.  */
  525. #define getc(_fp) _IO_getc (_fp)
  526.  
  527. #if defined __USE_POSIX || defined __USE_MISC
  528. /* These are defined in POSIX.1:1996.
  529.  
  530.    These functions are possible cancellation points and therefore not
  531.    marked with __THROW.  */
  532. extern int getc_unlocked (FILE *__stream);
  533. extern int getchar_unlocked (void);
  534. #endif /* Use POSIX or MISC.  */
  535.  
  536. #ifdef __USE_MISC
  537. /* Faster version when locking is not necessary.
  538.  
  539.    This function is not part of POSIX and therefore no official
  540.    cancellation point.  But due to similarity with an POSIX interface
  541.    or due to the implementation it is a cancellation point and
  542.    therefore not marked with __THROW.  */
  543. extern int fgetc_unlocked (FILE *__stream);
  544. #endif /* Use MISC.  */
  545.  
  546.  
  547. __BEGIN_NAMESPACE_STD
  548. /* Write a character to STREAM.
  549.  
  550.    These functions are possible cancellation points and therefore not
  551.    marked with __THROW.
  552.  
  553.    These functions is a possible cancellation point and therefore not
  554.    marked with __THROW.  */
  555. extern int fputc (int __c, FILE *__stream);
  556. extern int putc (int __c, FILE *__stream);
  557.  
  558. /* Write a character to stdout.
  559.  
  560.    This function is a possible cancellation point and therefore not
  561.    marked with __THROW.  */
  562. extern int putchar (int __c);
  563. __END_NAMESPACE_STD
  564.  
  565. /* The C standard explicitly says this can be a macro,
  566.    so we always do the optimization for it.  */
  567. #define putc(_ch, _fp) _IO_putc (_ch, _fp)
  568.  
  569. #ifdef __USE_MISC
  570. /* Faster version when locking is not necessary.
  571.  
  572.    This function is not part of POSIX and therefore no official
  573.    cancellation point.  But due to similarity with an POSIX interface
  574.    or due to the implementation it is a cancellation point and
  575.    therefore not marked with __THROW.  */
  576. extern int fputc_unlocked (int __c, FILE *__stream);
  577. #endif /* Use MISC.  */
  578.  
  579. #if defined __USE_POSIX || defined __USE_MISC
  580. /* These are defined in POSIX.1:1996.
  581.  
  582.    These functions are possible cancellation points and therefore not
  583.    marked with __THROW.  */
  584. extern int putc_unlocked (int __c, FILE *__stream);
  585. extern int putchar_unlocked (int __c);
  586. #endif /* Use POSIX or MISC.  */
  587.  
  588.  
  589. #if defined __USE_SVID || defined __USE_MISC \
  590.     || (defined __USE_XOPEN && !defined __USE_XOPEN2K)
  591. /* Get a word (int) from STREAM.  */
  592. extern int getw (FILE *__stream);
  593.  
  594. /* Write a word (int) to STREAM.  */
  595. extern int putw (int __w, FILE *__stream);
  596. #endif
  597.  
  598.  
  599. __BEGIN_NAMESPACE_STD
  600. /* Get a newline-terminated string of finite length from STREAM.
  601.  
  602.    This function is a possible cancellation point and therefore not
  603.    marked with __THROW.  */
  604. extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
  605.      __wur;
  606.  
  607. /* Get a newline-terminated string from stdin, removing the newline.
  608.    DO NOT USE THIS FUNCTION!!  There is no limit on how much it will read.
  609.  
  610.    This function is a possible cancellation point and therefore not
  611.    marked with __THROW.  */
  612. extern char *gets (char *__s) __wur;
  613. __END_NAMESPACE_STD
  614.  
  615. #ifdef __USE_GNU
  616. /* This function does the same as `fgets' but does not lock the stream.
  617.  
  618.    This function is not part of POSIX and therefore no official
  619.    cancellation point.  But due to similarity with an POSIX interface
  620.    or due to the implementation it is a cancellation point and
  621.    therefore not marked with __THROW.  */
  622. extern char *fgets_unlocked (char *__restrict __s, int __n,
  623.                  FILE *__restrict __stream) __wur;
  624. #endif
  625.  
  626.  
  627. #ifdef  __USE_XOPEN2K8
  628. /* Read up to (and including) a DELIMITER from STREAM into *LINEPTR
  629.    (and null-terminate it). *LINEPTR is a pointer returned from malloc (or
  630.    NULL), pointing to *N characters of space.  It is realloc'd as
  631.    necessary.  Returns the number of characters read (not including the
  632.    null terminator), or -1 on error or EOF.
  633.  
  634.    These functions are not part of POSIX and therefore no official
  635.    cancellation point.  But due to similarity with an POSIX interface
  636.    or due to the implementation they are cancellation points and
  637.    therefore not marked with __THROW.  */
  638. extern _IO_ssize_t __getdelim (char **__restrict __lineptr,
  639.                    size_t *__restrict __n, int __delimiter,
  640.                    FILE *__restrict __stream) __wur;
  641. extern _IO_ssize_t getdelim (char **__restrict __lineptr,
  642.                  size_t *__restrict __n, int __delimiter,
  643.                  FILE *__restrict __stream) __wur;
  644.  
  645. /* Like `getdelim', but reads up to a newline.
  646.  
  647.    This function is not part of POSIX and therefore no official
  648.    cancellation point.  But due to similarity with an POSIX interface
  649.    or due to the implementation it is a cancellation point and
  650.    therefore not marked with __THROW.  */
  651. extern _IO_ssize_t getline (char **__restrict __lineptr,
  652.                 size_t *__restrict __n,
  653.                 FILE *__restrict __stream) __wur;
  654. #endif
  655.  
  656.  
  657. __BEGIN_NAMESPACE_STD
  658. /* Write a string to STREAM.
  659.  
  660.    This function is a possible cancellation points and therefore not
  661.    marked with __THROW.  */
  662. extern int fputs (__const char *__restrict __s, FILE *__restrict __stream);
  663.  
  664. /* Write a string, followed by a newline, to stdout.
  665.  
  666.    This function is a possible cancellation points and therefore not
  667.    marked with __THROW.  */
  668. extern int puts (__const char *__s);
  669.  
  670.  
  671. /* Push a character back onto the input buffer of STREAM.
  672.  
  673.    This function is a possible cancellation points and therefore not
  674.    marked with __THROW.  */
  675. extern int ungetc (int __c, FILE *__stream);
  676.  
  677.  
  678. /* Read chunks of generic data from STREAM.
  679.  
  680.    This function is a possible cancellation points and therefore not
  681.    marked with __THROW.  */
  682. extern size_t fread (void *__restrict __ptr, size_t __size,
  683.              size_t __n, FILE *__restrict __stream) __wur;
  684. /* Write chunks of generic data to STREAM.
  685.  
  686.    This function is a possible cancellation points and therefore not
  687.    marked with __THROW.  */
  688. extern size_t fwrite (__const void *__restrict __ptr, size_t __size,
  689.               size_t __n, FILE *__restrict __s);
  690. __END_NAMESPACE_STD
  691.  
  692. #ifdef __USE_GNU
  693. /* This function does the same as `fputs' but does not lock the stream.
  694.  
  695.    This function is not part of POSIX and therefore no official
  696.    cancellation point.  But due to similarity with an POSIX interface
  697.    or due to the implementation it is a cancellation point and
  698.    therefore not marked with __THROW.  */
  699. extern int fputs_unlocked (__const char *__restrict __s,
  700.                FILE *__restrict __stream);
  701. #endif
  702.  
  703. #ifdef __USE_MISC
  704. /* Faster versions when locking is not necessary.
  705.  
  706.    These functions are not part of POSIX and therefore no official
  707.    cancellation point.  But due to similarity with an POSIX interface
  708.    or due to the implementation they are cancellation points and
  709.    therefore not marked with __THROW.  */
  710. extern size_t fread_unlocked (void *__restrict __ptr, size_t __size,
  711.                   size_t __n, FILE *__restrict __stream) __wur;
  712. extern size_t fwrite_unlocked (__const void *__restrict __ptr, size_t __size,
  713.                    size_t __n, FILE *__restrict __stream);
  714. #endif
  715.  
  716.  
  717. __BEGIN_NAMESPACE_STD
  718. /* Seek to a certain position on STREAM.
  719.  
  720.    This function is a possible cancellation point and therefore not
  721.    marked with __THROW.  */
  722. extern int fseek (FILE *__stream, long int __off, int __whence);
  723. /* Return the current position of STREAM.
  724.  
  725.    This function is a possible cancellation point and therefore not
  726.    marked with __THROW.  */
  727. extern long int ftell (FILE *__stream) __wur;
  728. /* Rewind to the beginning of STREAM.
  729.  
  730.    This function is a possible cancellation point and therefore not
  731.    marked with __THROW.  */
  732. extern void rewind (FILE *__stream);
  733. __END_NAMESPACE_STD
  734.  
  735. /* The Single Unix Specification, Version 2, specifies an alternative,
  736.    more adequate interface for the two functions above which deal with
  737.    file offset.  `long int' is not the right type.  These definitions
  738.    are originally defined in the Large File Support API.  */
  739.  
  740. #if defined __USE_LARGEFILE || defined __USE_XOPEN2K
  741. # ifndef __USE_FILE_OFFSET64
  742. /* Seek to a certain position on STREAM.
  743.  
  744.    This function is a possible cancellation point and therefore not
  745.    marked with __THROW.  */
  746. extern int fseeko (FILE *__stream, __off_t __off, int __whence);
  747. /* Return the current position of STREAM.
  748.  
  749.    This function is a possible cancellation point and therefore not
  750.    marked with __THROW.  */
  751. extern __off_t ftello (FILE *__stream) __wur;
  752. # else
  753. #  ifdef __REDIRECT
  754. extern int __REDIRECT (fseeko,
  755.                (FILE *__stream, __off64_t __off, int __whence),
  756.                fseeko64);
  757. extern __off64_t __REDIRECT (ftello, (FILE *__stream), ftello64);
  758. #  else
  759. #   define fseeko fseeko64
  760. #   define ftello ftello64
  761. #  endif
  762. # endif
  763. #endif
  764.  
  765. __BEGIN_NAMESPACE_STD
  766. #ifndef __USE_FILE_OFFSET64
  767. /* Get STREAM's position.
  768.  
  769.    This function is a possible cancellation point and therefore not
  770.    marked with __THROW.  */
  771. extern int fgetpos (FILE *__restrict __stream, fpos_t *__restrict __pos);
  772. /* Set STREAM's position.
  773.  
  774.    This function is a possible cancellation point and therefore not
  775.    marked with __THROW.  */
  776. extern int fsetpos (FILE *__stream, __const fpos_t *__pos);
  777. #else
  778. # ifdef __REDIRECT
  779. extern int __REDIRECT (fgetpos, (FILE *__restrict __stream,
  780.                  fpos_t *__restrict __pos), fgetpos64);
  781. extern int __REDIRECT (fsetpos,
  782.                (FILE *__stream, __const fpos_t *__pos), fsetpos64);
  783. # else
  784. #  define fgetpos fgetpos64
  785. #  define fsetpos fsetpos64
  786. # endif
  787. #endif
  788. __END_NAMESPACE_STD
  789.  
  790. #ifdef __USE_LARGEFILE64
  791. extern int fseeko64 (FILE *__stream, __off64_t __off, int __whence);
  792. extern __off64_t ftello64 (FILE *__stream) __wur;
  793. extern int fgetpos64 (FILE *__restrict __stream, fpos64_t *__restrict __pos);
  794. extern int fsetpos64 (FILE *__stream, __const fpos64_t *__pos);
  795. #endif
  796.  
  797. __BEGIN_NAMESPACE_STD
  798. /* Clear the error and EOF indicators for STREAM.  */
  799. extern void clearerr (FILE *__stream) __THROW;
  800. /* Return the EOF indicator for STREAM.  */
  801. extern int feof (FILE *__stream) __THROW __wur;
  802. /* Return the error indicator for STREAM.  */
  803. extern int ferror (FILE *__stream) __THROW __wur;
  804. __END_NAMESPACE_STD
  805.  
  806. #ifdef __USE_MISC
  807. /* Faster versions when locking is not required.  */
  808. extern void clearerr_unlocked (FILE *__stream) __THROW;
  809. extern int feof_unlocked (FILE *__stream) __THROW __wur;
  810. extern int ferror_unlocked (FILE *__stream) __THROW __wur;
  811. #endif
  812.  
  813.  
  814. __BEGIN_NAMESPACE_STD
  815. /* Print a message describing the meaning of the value of errno.
  816.  
  817.    This function is a possible cancellation point and therefore not
  818.    marked with __THROW.  */
  819. extern void perror (__const char *__s);
  820. __END_NAMESPACE_STD
  821.  
  822. /* Provide the declarations for `sys_errlist' and `sys_nerr' if they
  823.    are available on this system.  Even if available, these variables
  824.    should not be used directly.  The `strerror' function provides
  825.    all the necessary functionality.  */
  826. #include <bits/sys_errlist.h>
  827.  
  828.  
  829. #ifdef  __USE_POSIX
  830. /* Return the system file descriptor for STREAM.  */
  831. extern int fileno (FILE *__stream) __THROW __wur;
  832. #endif /* Use POSIX.  */
  833.  
  834. #ifdef __USE_MISC
  835. /* Faster version when locking is not required.  */
  836. extern int fileno_unlocked (FILE *__stream) __THROW __wur;
  837. #endif
  838.  
  839.  
  840. #if (defined __USE_POSIX2 || defined __USE_SVID  || defined __USE_BSD || \
  841.      defined __USE_MISC)
  842. /* Create a new stream connected to a pipe running the given command.
  843.  
  844.    This function is a possible cancellation point and therefore not
  845.    marked with __THROW.  */
  846. extern FILE *popen (__const char *__command, __const char *__modes) __wur;
  847.  
  848. /* Close a stream opened by popen and return the status of its child.
  849.  
  850.    This function is a possible cancellation point and therefore not
  851.    marked with __THROW.  */
  852. extern int pclose (FILE *__stream);
  853. #endif
  854.  
  855.  
  856. #ifdef  __USE_POSIX
  857. /* Return the name of the controlling terminal.  */
  858. extern char *ctermid (char *__s) __THROW;
  859. #endif /* Use POSIX.  */
  860.  
  861.  
  862. #ifdef __USE_XOPEN
  863. /* Return the name of the current user.  */
  864. extern char *cuserid (char *__s);
  865. #endif /* Use X/Open, but not issue 6.  */
  866.  
  867.  
  868. #ifdef  __USE_GNU
  869. struct obstack;         /* See <obstack.h>.  */
  870.  
  871. /* Write formatted output to an obstack.  */
  872. extern int obstack_printf (struct obstack *__restrict __obstack,
  873.                __const char *__restrict __format, ...)
  874.      __THROW __attribute__ ((__format__ (__printf__, 2, 3)));
  875. extern int obstack_vprintf (struct obstack *__restrict __obstack,
  876.                 __const char *__restrict __format,
  877.                 _G_va_list __args)
  878.      __THROW __attribute__ ((__format__ (__printf__, 2, 0)));
  879. #endif /* Use GNU.  */
  880.  
  881.  
  882. #if defined __USE_POSIX || defined __USE_MISC
  883. /* These are defined in POSIX.1:1996.  */
  884.  
  885. /* Acquire ownership of STREAM.  */
  886. extern void flockfile (FILE *__stream) __THROW;
  887.  
  888. /* Try to acquire ownership of STREAM but do not block if it is not
  889.    possible.  */
  890. extern int ftrylockfile (FILE *__stream) __THROW __wur;
  891.  
  892. /* Relinquish the ownership granted for STREAM.  */
  893. extern void funlockfile (FILE *__stream) __THROW;
  894. #endif /* POSIX || misc */
  895.  
  896. #if defined __USE_XOPEN && !defined __USE_XOPEN2K && !defined __USE_GNU
  897. /* The X/Open standard requires some functions and variables to be
  898.    declared here which do not belong into this header.  But we have to
  899.    follow.  In GNU mode we don't do this nonsense.  */
  900. # define __need_getopt
  901. # include <getopt.h>
  902. #endif  /* X/Open, but not issue 6 and not for GNU.  */
  903.  
  904. /* If we are compiling with optimizing read this file.  It contains
  905.    several optimizing inline functions and macros.  */
  906. #ifdef __USE_EXTERN_INLINES
  907. # include <bits/stdio.h>
  908. #endif
  909. #if __USE_FORTIFY_LEVEL > 0 && defined __extern_always_inline
  910. # include <bits/stdio2.h>
  911. #endif
  912. #ifdef __LDBL_COMPAT
  913. # include <bits/stdio-ldbl.h>
  914. #endif
  915.  
  916. __END_DECLS
  917.  
  918. #endif /* <stdio.h> included.  */
  919.  
  920. #endif /* !_STDIO_H */
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