mirror of
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a4fea3f2c3
We shipped 2.27 with libio.h and _G_config.h still installed but
issuing warnings when used. Let's stop installing them early in 2.28
so that we have plenty of time to think of another plan if there are
problems.
The public stdio.h had a genuine dependency on libio.h for the
complete definitions of FILE and cookie_io_functions_t, and a genuine
dependency on _G_config.h for the complete definitions of fpos_t and
fpos64_t; these are moved to single-type headers.
bits/types/struct_FILE.h also provides a handful of accessor and
bitflags macros so that code is not duplicated between bits/stdio.h
and libio.h. All the other _IO_ and _G_ names used by the public
stdio.h can be replaced with either public names or __-names.
In order to minimize the risk of breaking our own compatibility code,
bits/types/struct_FILE.h preserves the _IO_USE_OLD_IO_FILE mechanism
exactly as it was in libio.h, but you have to define _LIBC to use it,
or it'll error out. Similarly, _IO_lock_t_defined is preserved
exactly, but will error out if used without defining _LIBC.
Internally, include/stdio.h continues to include libio.h, and libio.h
scrupulously provides every _IO_* and _G_* name that it always did,
perhaps now defined in terms of the public names. This is how this
patch avoids touching dozens of files throughout glibc and becoming
entangled with the _IO_MTSAFE_IO mess. The remaining patches in this
series eliminate most of the _G_ names.
Tested on x86_64-linux; in addition to the test suite, I installed the
library in a sysroot and verified that a simple program that uses
stdio.h could be compiled against the installed library, and I also
verified that installed stripped libraries are unchanged.
* libio/bits/types/__fpos_t.h, libio/bits/types/__fpos64_t.h:
New single-type headers split from _G_config.h.
* libio/bits/types/cookie_io_functions_t.h
* libio/bits/types/struct_FILE.h
New single-type headers split from libio.h.
* libio/Makefile: Install the above new headers. Don't install
libio.h, _G_config.h, bits/libio.h, bits/_G_config.h, or
bits/libio-ldbl.h.
* libio/_G_config.h, libio/libio.h: Delete file.
* libio/bits/libio.h: Remove improper-inclusion guard.
Include stdio.h and don't repeat anything that it does.
Define _IO_fpos_t as __fpos_t, _IO_fpos64_t as __fpos64_t,
_IO_BUFSIZ as BUFSIZ, _IO_va_list as __gnuc_va_list,
__io_read_fn as cookie_read_function_t,
__io_write_fn as cookie_write_function_t,
__io_seek_fn as cookie_seek_function_t,
__io_close_fn as cookie_close_function_t,
and _IO_cookie_io_functions_t as cookie_io_functions_t.
Define _STDIO_USES_IOSTREAM, __HAVE_COLUMN, and _IO_file_flags
here, in the "compatibility defines" section. Remove an #if 0
block. Use the "body" macros from bits/types/struct_FILE.h to
define _IO_getc_unlocked, _IO_putc_unlocked, _IO_feof_unlocked,
and _IO_ferror_unlocked.
Move prototypes of __uflow and __overflow...
* libio/stdio.h: ...here. Don't include bits/libio.h.
Don't define _STDIO_USES_IOSTREAM. Get __gnuc_va_list
directly from stdarg.h. Include bits/types/__fpos_t.h,
bits/types/__fpos64_t.h, bits/types/struct_FILE.h,
and, when __USE_GNU, bits/types/cookie_io_functions_t.h.
Use __gnuc_va_list, not _G_va_list; __fpos_t, not _G_fpos_t;
__fpos64_t, not _G_fpos64_t; FILE, not struct _IO_FILE;
cookie_io_functions_t, not _IO_cookie_io_functions_t;
__ssize_t, not _IO_ssize_t. Unconditionally define
BUFSIZ as 8192 and EOF as (-1).
* libio/bits/stdio.h: Add multiple-include guard. Use the "body"
macros from bits/types/struct_FILE.h instead of _IO_* macros
from libio.h; use __gnuc_va_list instead of va_list and __ssize_t
instead of _IO_ssize_t.
* libio/bits/stdio2.h: Similarly.
* libio/iolibio.h: Add multiple-include guard.
Include bits/libio.h after stdio.h.
* libio/libioP.h: Add multiple-include guard.
Include stdio.h and bits/libio.h before iolibio.h.
* include/bits/types/__fpos_t.h, include/bits/types/__fpos64_t.h
* include/bits/types/cookie_io_functions_t.h
* include/bits/types/struct_FILE.h: New wrappers.
* bits/_G_config.h, sysdeps/unix/sysv/linux/_G_config.h:
Get definitions of _G_fpos_t and _G_fpos64_t from
bits/types/__fpos_t.h and bits/types/__fpos64_t.h
respectively. Remove improper-inclusion guards.
* conform/data/stdio.h-data: Update expectations of va_list.
* scripts/check-installed-headers.sh: Remove special case for
libio.h and _G_config.h.
870 lines
29 KiB
C
870 lines
29 KiB
C
/* Define ISO C stdio on top of C++ iostreams.
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Copyright (C) 1991-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/*
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* ISO C99 Standard: 7.19 Input/output <stdio.h>
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*/
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#ifndef _STDIO_H
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#define _STDIO_H 1
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#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
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#include <bits/libc-header-start.h>
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__BEGIN_DECLS
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#define __need_size_t
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#define __need_NULL
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#include <stddef.h>
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#define __need___va_list
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#include <stdarg.h>
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#include <bits/types.h>
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#include <bits/types/__fpos_t.h>
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#include <bits/types/__fpos64_t.h>
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#include <bits/types/__FILE.h>
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#include <bits/types/FILE.h>
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#include <bits/types/struct_FILE.h>
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#ifdef __USE_GNU
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# include <bits/types/cookie_io_functions_t.h>
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#endif
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#if defined __USE_XOPEN || defined __USE_XOPEN2K8
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# ifdef __GNUC__
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# ifndef _VA_LIST_DEFINED
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typedef __gnuc_va_list va_list;
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# define _VA_LIST_DEFINED
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# endif
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# else
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# include <stdarg.h>
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# endif
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#endif
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#if defined __USE_UNIX98 || defined __USE_XOPEN2K
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# ifndef __off_t_defined
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# ifndef __USE_FILE_OFFSET64
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typedef __off_t off_t;
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# else
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typedef __off64_t off_t;
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# endif
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# define __off_t_defined
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# endif
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# if defined __USE_LARGEFILE64 && !defined __off64_t_defined
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typedef __off64_t off64_t;
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# define __off64_t_defined
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# endif
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#endif
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#ifdef __USE_XOPEN2K8
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# ifndef __ssize_t_defined
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typedef __ssize_t ssize_t;
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# define __ssize_t_defined
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# endif
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#endif
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/* The type of the second argument to `fgetpos' and `fsetpos'. */
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#ifndef __USE_FILE_OFFSET64
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typedef __fpos_t fpos_t;
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#else
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typedef __fpos64_t fpos_t;
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#endif
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#ifdef __USE_LARGEFILE64
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typedef __fpos64_t fpos64_t;
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#endif
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/* The possibilities for the third argument to `setvbuf'. */
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#define _IOFBF 0 /* Fully buffered. */
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#define _IOLBF 1 /* Line buffered. */
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#define _IONBF 2 /* No buffering. */
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/* Default buffer size. */
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#define BUFSIZ 8192
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/* The value returned by fgetc and similar functions to indicate the
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end of the file. */
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#define EOF (-1)
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/* The possibilities for the third argument to `fseek'.
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These values should not be changed. */
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#define SEEK_SET 0 /* Seek from beginning of file. */
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#define SEEK_CUR 1 /* Seek from current position. */
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#define SEEK_END 2 /* Seek from end of file. */
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#ifdef __USE_GNU
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# define SEEK_DATA 3 /* Seek to next data. */
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# define SEEK_HOLE 4 /* Seek to next hole. */
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#endif
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#if defined __USE_MISC || defined __USE_XOPEN
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/* Default path prefix for `tempnam' and `tmpnam'. */
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# define P_tmpdir "/tmp"
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#endif
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/* Get the values:
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L_tmpnam How long an array of chars must be to be passed to `tmpnam'.
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TMP_MAX The minimum number of unique filenames generated by tmpnam
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(and tempnam when it uses tmpnam's name space),
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or tempnam (the two are separate).
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L_ctermid How long an array to pass to `ctermid'.
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L_cuserid How long an array to pass to `cuserid'.
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FOPEN_MAX Minimum number of files that can be open at once.
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FILENAME_MAX Maximum length of a filename. */
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#include <bits/stdio_lim.h>
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/* Standard streams. */
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extern FILE *stdin; /* Standard input stream. */
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extern FILE *stdout; /* Standard output stream. */
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extern FILE *stderr; /* Standard error output stream. */
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/* C89/C99 say they're macros. Make them happy. */
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#define stdin stdin
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#define stdout stdout
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#define stderr stderr
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/* Remove file FILENAME. */
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extern int remove (const char *__filename) __THROW;
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/* Rename file OLD to NEW. */
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extern int rename (const char *__old, const char *__new) __THROW;
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#ifdef __USE_ATFILE
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/* Rename file OLD relative to OLDFD to NEW relative to NEWFD. */
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extern int renameat (int __oldfd, const char *__old, int __newfd,
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const char *__new) __THROW;
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#endif
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/* Create a temporary file and open it read/write.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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#ifndef __USE_FILE_OFFSET64
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extern FILE *tmpfile (void) __wur;
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#else
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# ifdef __REDIRECT
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extern FILE *__REDIRECT (tmpfile, (void), tmpfile64) __wur;
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# else
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# define tmpfile tmpfile64
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# endif
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#endif
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#ifdef __USE_LARGEFILE64
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extern FILE *tmpfile64 (void) __wur;
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#endif
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/* Generate a temporary filename. */
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extern char *tmpnam (char *__s) __THROW __wur;
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#ifdef __USE_MISC
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/* This is the reentrant variant of `tmpnam'. The only difference is
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that it does not allow S to be NULL. */
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extern char *tmpnam_r (char *__s) __THROW __wur;
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#endif
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#if defined __USE_MISC || defined __USE_XOPEN
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/* Generate a unique temporary filename using up to five characters of PFX
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if it is not NULL. The directory to put this file in is searched for
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as follows: First the environment variable "TMPDIR" is checked.
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If it contains the name of a writable directory, that directory is used.
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If not and if DIR is not NULL, that value is checked. If that fails,
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P_tmpdir is tried and finally "/tmp". The storage for the filename
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is allocated by `malloc'. */
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extern char *tempnam (const char *__dir, const char *__pfx)
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__THROW __attribute_malloc__ __wur;
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#endif
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/* Close STREAM.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern int fclose (FILE *__stream);
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/* Flush STREAM, or all streams if STREAM is NULL.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern int fflush (FILE *__stream);
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#ifdef __USE_MISC
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/* Faster versions when locking is not required.
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This function is not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation it is a cancellation point and
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therefore not marked with __THROW. */
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extern int fflush_unlocked (FILE *__stream);
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#endif
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#ifdef __USE_GNU
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/* Close all streams.
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This function is not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation it is a cancellation point and
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therefore not marked with __THROW. */
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extern int fcloseall (void);
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#endif
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#ifndef __USE_FILE_OFFSET64
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/* Open a file and create a new stream for it.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern FILE *fopen (const char *__restrict __filename,
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const char *__restrict __modes) __wur;
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/* Open a file, replacing an existing stream with it.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern FILE *freopen (const char *__restrict __filename,
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const char *__restrict __modes,
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FILE *__restrict __stream) __wur;
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#else
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# ifdef __REDIRECT
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extern FILE *__REDIRECT (fopen, (const char *__restrict __filename,
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const char *__restrict __modes), fopen64)
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__wur;
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extern FILE *__REDIRECT (freopen, (const char *__restrict __filename,
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const char *__restrict __modes,
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FILE *__restrict __stream), freopen64)
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__wur;
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# else
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# define fopen fopen64
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# define freopen freopen64
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# endif
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#endif
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#ifdef __USE_LARGEFILE64
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extern FILE *fopen64 (const char *__restrict __filename,
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const char *__restrict __modes) __wur;
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extern FILE *freopen64 (const char *__restrict __filename,
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const char *__restrict __modes,
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FILE *__restrict __stream) __wur;
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#endif
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#ifdef __USE_POSIX
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/* Create a new stream that refers to an existing system file descriptor. */
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extern FILE *fdopen (int __fd, const char *__modes) __THROW __wur;
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#endif
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#ifdef __USE_GNU
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/* Create a new stream that refers to the given magic cookie,
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and uses the given functions for input and output. */
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extern FILE *fopencookie (void *__restrict __magic_cookie,
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const char *__restrict __modes,
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cookie_io_functions_t __io_funcs) __THROW __wur;
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#endif
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#if defined __USE_XOPEN2K8 || __GLIBC_USE (LIB_EXT2)
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/* Create a new stream that refers to a memory buffer. */
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extern FILE *fmemopen (void *__s, size_t __len, const char *__modes)
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__THROW __wur;
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/* Open a stream that writes into a malloc'd buffer that is expanded as
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necessary. *BUFLOC and *SIZELOC are updated with the buffer's location
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and the number of characters written on fflush or fclose. */
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extern FILE *open_memstream (char **__bufloc, size_t *__sizeloc) __THROW __wur;
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#endif
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/* If BUF is NULL, make STREAM unbuffered.
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Else make it use buffer BUF, of size BUFSIZ. */
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extern void setbuf (FILE *__restrict __stream, char *__restrict __buf) __THROW;
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/* Make STREAM use buffering mode MODE.
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If BUF is not NULL, use N bytes of it for buffering;
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else allocate an internal buffer N bytes long. */
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extern int setvbuf (FILE *__restrict __stream, char *__restrict __buf,
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int __modes, size_t __n) __THROW;
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#ifdef __USE_MISC
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/* If BUF is NULL, make STREAM unbuffered.
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Else make it use SIZE bytes of BUF for buffering. */
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extern void setbuffer (FILE *__restrict __stream, char *__restrict __buf,
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size_t __size) __THROW;
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/* Make STREAM line-buffered. */
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extern void setlinebuf (FILE *__stream) __THROW;
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#endif
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/* Write formatted output to STREAM.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern int fprintf (FILE *__restrict __stream,
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const char *__restrict __format, ...);
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/* Write formatted output to stdout.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern int printf (const char *__restrict __format, ...);
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/* Write formatted output to S. */
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extern int sprintf (char *__restrict __s,
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const char *__restrict __format, ...) __THROWNL;
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/* Write formatted output to S from argument list ARG.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern int vfprintf (FILE *__restrict __s, const char *__restrict __format,
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__gnuc_va_list __arg);
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/* Write formatted output to stdout from argument list ARG.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern int vprintf (const char *__restrict __format, __gnuc_va_list __arg);
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/* Write formatted output to S from argument list ARG. */
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extern int vsprintf (char *__restrict __s, const char *__restrict __format,
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__gnuc_va_list __arg) __THROWNL;
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#if defined __USE_ISOC99 || defined __USE_UNIX98
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/* Maximum chars of output to write in MAXLEN. */
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extern int snprintf (char *__restrict __s, size_t __maxlen,
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const char *__restrict __format, ...)
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__THROWNL __attribute__ ((__format__ (__printf__, 3, 4)));
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extern int vsnprintf (char *__restrict __s, size_t __maxlen,
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const char *__restrict __format, __gnuc_va_list __arg)
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__THROWNL __attribute__ ((__format__ (__printf__, 3, 0)));
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#endif
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#if __GLIBC_USE (LIB_EXT2)
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/* Write formatted output to a string dynamically allocated with `malloc'.
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Store the address of the string in *PTR. */
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extern int vasprintf (char **__restrict __ptr, const char *__restrict __f,
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__gnuc_va_list __arg)
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__THROWNL __attribute__ ((__format__ (__printf__, 2, 0))) __wur;
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extern int __asprintf (char **__restrict __ptr,
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const char *__restrict __fmt, ...)
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__THROWNL __attribute__ ((__format__ (__printf__, 2, 3))) __wur;
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extern int asprintf (char **__restrict __ptr,
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const char *__restrict __fmt, ...)
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__THROWNL __attribute__ ((__format__ (__printf__, 2, 3))) __wur;
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#endif
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#ifdef __USE_XOPEN2K8
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/* Write formatted output to a file descriptor. */
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extern int vdprintf (int __fd, const char *__restrict __fmt,
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__gnuc_va_list __arg)
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__attribute__ ((__format__ (__printf__, 2, 0)));
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extern int dprintf (int __fd, const char *__restrict __fmt, ...)
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__attribute__ ((__format__ (__printf__, 2, 3)));
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#endif
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/* Read formatted input from STREAM.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern int fscanf (FILE *__restrict __stream,
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const char *__restrict __format, ...) __wur;
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/* Read formatted input from stdin.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern int scanf (const char *__restrict __format, ...) __wur;
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/* Read formatted input from S. */
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extern int sscanf (const char *__restrict __s,
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const char *__restrict __format, ...) __THROW;
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#if defined __USE_ISOC99 && !defined __USE_GNU \
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&& (!defined __LDBL_COMPAT || !defined __REDIRECT) \
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|
&& (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
|
|
# ifdef __REDIRECT
|
|
/* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[
|
|
GNU extension which conflicts with valid %a followed by letter
|
|
s, S or [. */
|
|
extern int __REDIRECT (fscanf, (FILE *__restrict __stream,
|
|
const char *__restrict __format, ...),
|
|
__isoc99_fscanf) __wur;
|
|
extern int __REDIRECT (scanf, (const char *__restrict __format, ...),
|
|
__isoc99_scanf) __wur;
|
|
extern int __REDIRECT_NTH (sscanf, (const char *__restrict __s,
|
|
const char *__restrict __format, ...),
|
|
__isoc99_sscanf);
|
|
# else
|
|
extern int __isoc99_fscanf (FILE *__restrict __stream,
|
|
const char *__restrict __format, ...) __wur;
|
|
extern int __isoc99_scanf (const char *__restrict __format, ...) __wur;
|
|
extern int __isoc99_sscanf (const char *__restrict __s,
|
|
const char *__restrict __format, ...) __THROW;
|
|
# define fscanf __isoc99_fscanf
|
|
# define scanf __isoc99_scanf
|
|
# define sscanf __isoc99_sscanf
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef __USE_ISOC99
|
|
/* Read formatted input from S into argument list ARG.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern int vfscanf (FILE *__restrict __s, const char *__restrict __format,
|
|
__gnuc_va_list __arg)
|
|
__attribute__ ((__format__ (__scanf__, 2, 0))) __wur;
|
|
|
|
/* Read formatted input from stdin into argument list ARG.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern int vscanf (const char *__restrict __format, __gnuc_va_list __arg)
|
|
__attribute__ ((__format__ (__scanf__, 1, 0))) __wur;
|
|
|
|
/* Read formatted input from S into argument list ARG. */
|
|
extern int vsscanf (const char *__restrict __s,
|
|
const char *__restrict __format, __gnuc_va_list __arg)
|
|
__THROW __attribute__ ((__format__ (__scanf__, 2, 0)));
|
|
|
|
# if !defined __USE_GNU \
|
|
&& (!defined __LDBL_COMPAT || !defined __REDIRECT) \
|
|
&& (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
|
|
# ifdef __REDIRECT
|
|
/* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[
|
|
GNU extension which conflicts with valid %a followed by letter
|
|
s, S or [. */
|
|
extern int __REDIRECT (vfscanf,
|
|
(FILE *__restrict __s,
|
|
const char *__restrict __format, __gnuc_va_list __arg),
|
|
__isoc99_vfscanf)
|
|
__attribute__ ((__format__ (__scanf__, 2, 0))) __wur;
|
|
extern int __REDIRECT (vscanf, (const char *__restrict __format,
|
|
__gnuc_va_list __arg), __isoc99_vscanf)
|
|
__attribute__ ((__format__ (__scanf__, 1, 0))) __wur;
|
|
extern int __REDIRECT_NTH (vsscanf,
|
|
(const char *__restrict __s,
|
|
const char *__restrict __format,
|
|
__gnuc_va_list __arg), __isoc99_vsscanf)
|
|
__attribute__ ((__format__ (__scanf__, 2, 0)));
|
|
# else
|
|
extern int __isoc99_vfscanf (FILE *__restrict __s,
|
|
const char *__restrict __format,
|
|
__gnuc_va_list __arg) __wur;
|
|
extern int __isoc99_vscanf (const char *__restrict __format,
|
|
__gnuc_va_list __arg) __wur;
|
|
extern int __isoc99_vsscanf (const char *__restrict __s,
|
|
const char *__restrict __format,
|
|
__gnuc_va_list __arg) __THROW;
|
|
# define vfscanf __isoc99_vfscanf
|
|
# define vscanf __isoc99_vscanf
|
|
# define vsscanf __isoc99_vsscanf
|
|
# endif
|
|
# endif
|
|
#endif /* Use ISO C9x. */
|
|
|
|
|
|
/* Read a character from STREAM.
|
|
|
|
These functions are possible cancellation points and therefore not
|
|
marked with __THROW. */
|
|
extern int fgetc (FILE *__stream);
|
|
extern int getc (FILE *__stream);
|
|
|
|
/* Read a character from stdin.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern int getchar (void);
|
|
|
|
#ifdef __USE_POSIX199506
|
|
/* These are defined in POSIX.1:1996.
|
|
|
|
These functions are possible cancellation points and therefore not
|
|
marked with __THROW. */
|
|
extern int getc_unlocked (FILE *__stream);
|
|
extern int getchar_unlocked (void);
|
|
#endif /* Use POSIX. */
|
|
|
|
#ifdef __USE_MISC
|
|
/* Faster version when locking is not necessary.
|
|
|
|
This function is not part of POSIX and therefore no official
|
|
cancellation point. But due to similarity with an POSIX interface
|
|
or due to the implementation it is a cancellation point and
|
|
therefore not marked with __THROW. */
|
|
extern int fgetc_unlocked (FILE *__stream);
|
|
#endif /* Use MISC. */
|
|
|
|
|
|
/* Write a character to STREAM.
|
|
|
|
These functions are possible cancellation points and therefore not
|
|
marked with __THROW.
|
|
|
|
These functions is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern int fputc (int __c, FILE *__stream);
|
|
extern int putc (int __c, FILE *__stream);
|
|
|
|
/* Write a character to stdout.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern int putchar (int __c);
|
|
|
|
#ifdef __USE_MISC
|
|
/* Faster version when locking is not necessary.
|
|
|
|
This function is not part of POSIX and therefore no official
|
|
cancellation point. But due to similarity with an POSIX interface
|
|
or due to the implementation it is a cancellation point and
|
|
therefore not marked with __THROW. */
|
|
extern int fputc_unlocked (int __c, FILE *__stream);
|
|
#endif /* Use MISC. */
|
|
|
|
#ifdef __USE_POSIX199506
|
|
/* These are defined in POSIX.1:1996.
|
|
|
|
These functions are possible cancellation points and therefore not
|
|
marked with __THROW. */
|
|
extern int putc_unlocked (int __c, FILE *__stream);
|
|
extern int putchar_unlocked (int __c);
|
|
#endif /* Use POSIX. */
|
|
|
|
|
|
#if defined __USE_MISC \
|
|
|| (defined __USE_XOPEN && !defined __USE_XOPEN2K)
|
|
/* Get a word (int) from STREAM. */
|
|
extern int getw (FILE *__stream);
|
|
|
|
/* Write a word (int) to STREAM. */
|
|
extern int putw (int __w, FILE *__stream);
|
|
#endif
|
|
|
|
|
|
/* Get a newline-terminated string of finite length from STREAM.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
|
|
__wur;
|
|
|
|
#if __GLIBC_USE (DEPRECATED_GETS)
|
|
/* Get a newline-terminated string from stdin, removing the newline.
|
|
|
|
This function is impossible to use safely. It has been officially
|
|
removed from ISO C11 and ISO C++14, and we have also removed it
|
|
from the _GNU_SOURCE feature list. It remains available when
|
|
explicitly using an old ISO C, Unix, or POSIX standard.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern char *gets (char *__s) __wur __attribute_deprecated__;
|
|
#endif
|
|
|
|
#ifdef __USE_GNU
|
|
/* This function does the same as `fgets' but does not lock the stream.
|
|
|
|
This function is not part of POSIX and therefore no official
|
|
cancellation point. But due to similarity with an POSIX interface
|
|
or due to the implementation it is a cancellation point and
|
|
therefore not marked with __THROW. */
|
|
extern char *fgets_unlocked (char *__restrict __s, int __n,
|
|
FILE *__restrict __stream) __wur;
|
|
#endif
|
|
|
|
|
|
#if defined __USE_XOPEN2K8 || __GLIBC_USE (LIB_EXT2)
|
|
/* Read up to (and including) a DELIMITER from STREAM into *LINEPTR
|
|
(and null-terminate it). *LINEPTR is a pointer returned from malloc (or
|
|
NULL), pointing to *N characters of space. It is realloc'd as
|
|
necessary. Returns the number of characters read (not including the
|
|
null terminator), or -1 on error or EOF.
|
|
|
|
These functions are not part of POSIX and therefore no official
|
|
cancellation point. But due to similarity with an POSIX interface
|
|
or due to the implementation they are cancellation points and
|
|
therefore not marked with __THROW. */
|
|
extern __ssize_t __getdelim (char **__restrict __lineptr,
|
|
size_t *__restrict __n, int __delimiter,
|
|
FILE *__restrict __stream) __wur;
|
|
extern __ssize_t getdelim (char **__restrict __lineptr,
|
|
size_t *__restrict __n, int __delimiter,
|
|
FILE *__restrict __stream) __wur;
|
|
|
|
/* Like `getdelim', but reads up to a newline.
|
|
|
|
This function is not part of POSIX and therefore no official
|
|
cancellation point. But due to similarity with an POSIX interface
|
|
or due to the implementation it is a cancellation point and
|
|
therefore not marked with __THROW. */
|
|
extern __ssize_t getline (char **__restrict __lineptr,
|
|
size_t *__restrict __n,
|
|
FILE *__restrict __stream) __wur;
|
|
#endif
|
|
|
|
|
|
/* Write a string to STREAM.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern int fputs (const char *__restrict __s, FILE *__restrict __stream);
|
|
|
|
/* Write a string, followed by a newline, to stdout.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern int puts (const char *__s);
|
|
|
|
|
|
/* Push a character back onto the input buffer of STREAM.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern int ungetc (int __c, FILE *__stream);
|
|
|
|
|
|
/* Read chunks of generic data from STREAM.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern size_t fread (void *__restrict __ptr, size_t __size,
|
|
size_t __n, FILE *__restrict __stream) __wur;
|
|
/* Write chunks of generic data to STREAM.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern size_t fwrite (const void *__restrict __ptr, size_t __size,
|
|
size_t __n, FILE *__restrict __s);
|
|
|
|
#ifdef __USE_GNU
|
|
/* This function does the same as `fputs' but does not lock the stream.
|
|
|
|
This function is not part of POSIX and therefore no official
|
|
cancellation point. But due to similarity with an POSIX interface
|
|
or due to the implementation it is a cancellation point and
|
|
therefore not marked with __THROW. */
|
|
extern int fputs_unlocked (const char *__restrict __s,
|
|
FILE *__restrict __stream);
|
|
#endif
|
|
|
|
#ifdef __USE_MISC
|
|
/* Faster versions when locking is not necessary.
|
|
|
|
These functions are not part of POSIX and therefore no official
|
|
cancellation point. But due to similarity with an POSIX interface
|
|
or due to the implementation they are cancellation points and
|
|
therefore not marked with __THROW. */
|
|
extern size_t fread_unlocked (void *__restrict __ptr, size_t __size,
|
|
size_t __n, FILE *__restrict __stream) __wur;
|
|
extern size_t fwrite_unlocked (const void *__restrict __ptr, size_t __size,
|
|
size_t __n, FILE *__restrict __stream);
|
|
#endif
|
|
|
|
|
|
/* Seek to a certain position on STREAM.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern int fseek (FILE *__stream, long int __off, int __whence);
|
|
/* Return the current position of STREAM.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern long int ftell (FILE *__stream) __wur;
|
|
/* Rewind to the beginning of STREAM.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern void rewind (FILE *__stream);
|
|
|
|
/* The Single Unix Specification, Version 2, specifies an alternative,
|
|
more adequate interface for the two functions above which deal with
|
|
file offset. `long int' is not the right type. These definitions
|
|
are originally defined in the Large File Support API. */
|
|
|
|
#if defined __USE_LARGEFILE || defined __USE_XOPEN2K
|
|
# ifndef __USE_FILE_OFFSET64
|
|
/* Seek to a certain position on STREAM.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern int fseeko (FILE *__stream, __off_t __off, int __whence);
|
|
/* Return the current position of STREAM.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern __off_t ftello (FILE *__stream) __wur;
|
|
# else
|
|
# ifdef __REDIRECT
|
|
extern int __REDIRECT (fseeko,
|
|
(FILE *__stream, __off64_t __off, int __whence),
|
|
fseeko64);
|
|
extern __off64_t __REDIRECT (ftello, (FILE *__stream), ftello64);
|
|
# else
|
|
# define fseeko fseeko64
|
|
# define ftello ftello64
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
#ifndef __USE_FILE_OFFSET64
|
|
/* Get STREAM's position.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern int fgetpos (FILE *__restrict __stream, fpos_t *__restrict __pos);
|
|
/* Set STREAM's position.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern int fsetpos (FILE *__stream, const fpos_t *__pos);
|
|
#else
|
|
# ifdef __REDIRECT
|
|
extern int __REDIRECT (fgetpos, (FILE *__restrict __stream,
|
|
fpos_t *__restrict __pos), fgetpos64);
|
|
extern int __REDIRECT (fsetpos,
|
|
(FILE *__stream, const fpos_t *__pos), fsetpos64);
|
|
# else
|
|
# define fgetpos fgetpos64
|
|
# define fsetpos fsetpos64
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef __USE_LARGEFILE64
|
|
extern int fseeko64 (FILE *__stream, __off64_t __off, int __whence);
|
|
extern __off64_t ftello64 (FILE *__stream) __wur;
|
|
extern int fgetpos64 (FILE *__restrict __stream, fpos64_t *__restrict __pos);
|
|
extern int fsetpos64 (FILE *__stream, const fpos64_t *__pos);
|
|
#endif
|
|
|
|
/* Clear the error and EOF indicators for STREAM. */
|
|
extern void clearerr (FILE *__stream) __THROW;
|
|
/* Return the EOF indicator for STREAM. */
|
|
extern int feof (FILE *__stream) __THROW __wur;
|
|
/* Return the error indicator for STREAM. */
|
|
extern int ferror (FILE *__stream) __THROW __wur;
|
|
|
|
#ifdef __USE_MISC
|
|
/* Faster versions when locking is not required. */
|
|
extern void clearerr_unlocked (FILE *__stream) __THROW;
|
|
extern int feof_unlocked (FILE *__stream) __THROW __wur;
|
|
extern int ferror_unlocked (FILE *__stream) __THROW __wur;
|
|
#endif
|
|
|
|
|
|
/* Print a message describing the meaning of the value of errno.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern void perror (const char *__s);
|
|
|
|
/* Provide the declarations for `sys_errlist' and `sys_nerr' if they
|
|
are available on this system. Even if available, these variables
|
|
should not be used directly. The `strerror' function provides
|
|
all the necessary functionality. */
|
|
#include <bits/sys_errlist.h>
|
|
|
|
|
|
#ifdef __USE_POSIX
|
|
/* Return the system file descriptor for STREAM. */
|
|
extern int fileno (FILE *__stream) __THROW __wur;
|
|
#endif /* Use POSIX. */
|
|
|
|
#ifdef __USE_MISC
|
|
/* Faster version when locking is not required. */
|
|
extern int fileno_unlocked (FILE *__stream) __THROW __wur;
|
|
#endif
|
|
|
|
|
|
#ifdef __USE_POSIX2
|
|
/* Create a new stream connected to a pipe running the given command.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern FILE *popen (const char *__command, const char *__modes) __wur;
|
|
|
|
/* Close a stream opened by popen and return the status of its child.
|
|
|
|
This function is a possible cancellation point and therefore not
|
|
marked with __THROW. */
|
|
extern int pclose (FILE *__stream);
|
|
#endif
|
|
|
|
|
|
#ifdef __USE_POSIX
|
|
/* Return the name of the controlling terminal. */
|
|
extern char *ctermid (char *__s) __THROW;
|
|
#endif /* Use POSIX. */
|
|
|
|
|
|
#if (defined __USE_XOPEN && !defined __USE_XOPEN2K) || defined __USE_GNU
|
|
/* Return the name of the current user. */
|
|
extern char *cuserid (char *__s);
|
|
#endif /* Use X/Open, but not issue 6. */
|
|
|
|
|
|
#ifdef __USE_GNU
|
|
struct obstack; /* See <obstack.h>. */
|
|
|
|
/* Write formatted output to an obstack. */
|
|
extern int obstack_printf (struct obstack *__restrict __obstack,
|
|
const char *__restrict __format, ...)
|
|
__THROWNL __attribute__ ((__format__ (__printf__, 2, 3)));
|
|
extern int obstack_vprintf (struct obstack *__restrict __obstack,
|
|
const char *__restrict __format,
|
|
__gnuc_va_list __args)
|
|
__THROWNL __attribute__ ((__format__ (__printf__, 2, 0)));
|
|
#endif /* Use GNU. */
|
|
|
|
|
|
#ifdef __USE_POSIX199506
|
|
/* These are defined in POSIX.1:1996. */
|
|
|
|
/* Acquire ownership of STREAM. */
|
|
extern void flockfile (FILE *__stream) __THROW;
|
|
|
|
/* Try to acquire ownership of STREAM but do not block if it is not
|
|
possible. */
|
|
extern int ftrylockfile (FILE *__stream) __THROW __wur;
|
|
|
|
/* Relinquish the ownership granted for STREAM. */
|
|
extern void funlockfile (FILE *__stream) __THROW;
|
|
#endif /* POSIX */
|
|
|
|
#if defined __USE_XOPEN && !defined __USE_XOPEN2K && !defined __USE_GNU
|
|
/* X/Open Issues 1-5 required getopt to be declared in this
|
|
header. It was removed in Issue 6. GNU follows Issue 6. */
|
|
# include <bits/getopt_posix.h>
|
|
#endif
|
|
|
|
/* Slow-path routines used by the optimized inline functions in
|
|
bits/stdio.h. */
|
|
extern int __uflow (FILE *);
|
|
extern int __overflow (FILE *, int);
|
|
|
|
/* If we are compiling with optimizing read this file. It contains
|
|
several optimizing inline functions and macros. */
|
|
#ifdef __USE_EXTERN_INLINES
|
|
# include <bits/stdio.h>
|
|
#endif
|
|
#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
|
|
# include <bits/stdio2.h>
|
|
#endif
|
|
#ifdef __LDBL_COMPAT
|
|
# include <bits/stdio-ldbl.h>
|
|
#endif
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* <stdio.h> included. */
|