a725c77213
especially when you follow using non-POSIX vfork() defining _POSIX_SOURCE means "POSIX clean environment", which means (besides other things) that we won't get proper definition of e.g. vfork() and end up with the compatibility stub
652 lines
25 KiB
C
652 lines
25 KiB
C
/* Copyright (C) 1993, 1997 Free Software Foundation, Inc.
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This file is part of the GNU IO Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2, or (at
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your option) any later version.
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This library is distributed in the hope that it will be useful, but
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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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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this library; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA.
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As a special exception, if you link this library with files
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compiled with a GNU compiler to produce an executable, this does
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not cause the resulting executable to be covered by the GNU General
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Public License. This exception does not however invalidate any
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other reasons why the executable file might be covered by the GNU
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General Public License. */
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#ifndef __NetBSD__
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/* the forced define of _POSIX_SOURCE is probably only needed for glibc */
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#ifndef _POSIX_SOURCE
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# define _POSIX_SOURCE
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#endif
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#endif
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#include <errno.h>
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#ifndef __set_errno
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# define __set_errno(Val) errno = (Val)
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#endif
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#ifdef _IO_MTSAFE_IO
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# if defined __GLIBC__ && __GLIBC__ >= 2
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# if __GLIBC_MINOR__ > 0
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# include <bits/libc-lock.h>
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# else
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# include <libc-lock.h>
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# endif
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# else
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/*# include <comthread.h>*/
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# endif
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#endif
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#include "iolibio.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define _IO_seek_set 0
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#define _IO_seek_cur 1
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#define _IO_seek_end 2
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/* THE JUMPTABLE FUNCTIONS.
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* The _IO_FILE type is used to implement the FILE type in GNU libc,
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* as well as the streambuf class in GNU iostreams for C++.
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* These are all the same, just used differently.
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* An _IO_FILE (or FILE) object is allows followed by a pointer to
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* a jump table (of pointers to functions). The pointer is accessed
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* with the _IO_JUMPS macro. The jump table has a eccentric format,
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* so as to be compatible with the layout of a C++ virtual function table.
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* (as implemented by g++). When a pointer to a streambuf object is
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* coerced to an (_IO_FILE*), then _IO_JUMPS on the result just
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* happens to point to the virtual function table of the streambuf.
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* Thus the _IO_JUMPS function table used for C stdio/libio does
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* double duty as the virtual function table for C++ streambuf.
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*
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* The entries in the _IO_JUMPS function table (and hence also the
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* virtual functions of a streambuf) are described below.
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* The first parameter of each function entry is the _IO_FILE/streambuf
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* object being acted on (i.e. the 'this' parameter).
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*/
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#define _IO_JUMPS(THIS) ((struct _IO_FILE_plus *) (THIS))->vtable
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#ifdef _G_USING_THUNKS
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# define JUMP_FIELD(TYPE, NAME) TYPE NAME
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# define JUMP0(FUNC, THIS) _IO_JUMPS(THIS)->FUNC (THIS)
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# define JUMP1(FUNC, THIS, X1) _IO_JUMPS(THIS)->FUNC (THIS, X1)
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# define JUMP2(FUNC, THIS, X1, X2) _IO_JUMPS(THIS)->FUNC (THIS, X1, X2)
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# define JUMP3(FUNC, THIS, X1,X2,X3) _IO_JUMPS(THIS)->FUNC (THIS, X1,X2, X3)
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# define JUMP_INIT(NAME, VALUE) VALUE
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# define JUMP_INIT_DUMMY JUMP_INIT(dummy, 0), JUMP_INIT (dummy2, 0)
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#else
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/* These macros will change when we re-implement vtables to use "thunks"! */
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# define JUMP_FIELD(TYPE, NAME) struct { short delta1, delta2; TYPE pfn; } NAME
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# define JUMP0(FUNC, THIS) _IO_JUMPS(THIS)->FUNC.pfn (THIS)
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# define JUMP1(FUNC, THIS, X1) _IO_JUMPS(THIS)->FUNC.pfn (THIS, X1)
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# define JUMP2(FUNC, THIS, X1, X2) _IO_JUMPS(THIS)->FUNC.pfn (THIS, X1, X2)
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# define JUMP3(FUNC, THIS, X1,X2,X3) _IO_JUMPS(THIS)->FUNC.pfn (THIS, X1,X2,X3)
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# define JUMP_INIT(NAME, VALUE) {0, 0, VALUE}
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# define JUMP_INIT_DUMMY JUMP_INIT(dummy, 0)
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#endif
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/* The 'finish' function does any final cleaning up of an _IO_FILE object.
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It does not delete (free) it, but does everything else to finalize it/
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It matches the streambuf::~streambuf virtual destructor. */
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typedef void (*_IO_finish_t) __PMT ((_IO_FILE *, int)); /* finalize */
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#define _IO_FINISH(FP) JUMP1 (__finish, FP, 0)
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/* The 'overflow' hook flushes the buffer.
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The second argument is a character, or EOF.
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It matches the streambuf::overflow virtual function. */
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typedef int (*_IO_overflow_t) __PMT ((_IO_FILE *, int));
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#define _IO_OVERFLOW(FP, CH) JUMP1 (__overflow, FP, CH)
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/* The 'underflow' hook tries to fills the get buffer.
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It returns the next character (as an unsigned char) or EOF. The next
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character remains in the get buffer, and the get position is not changed.
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It matches the streambuf::underflow virtual function. */
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typedef int (*_IO_underflow_t) __PMT ((_IO_FILE *));
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#define _IO_UNDERFLOW(FP) JUMP0 (__underflow, FP)
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/* The 'uflow' hook returns the next character in the input stream
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(cast to unsigned char), and increments the read position;
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EOF is returned on failure.
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It matches the streambuf::uflow virtual function, which is not in the
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cfront implementation, but was added to C++ by the ANSI/ISO committee. */
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#define _IO_UFLOW(FP) JUMP0 (__uflow, FP)
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/* The 'pbackfail' hook handles backing up.
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It matches the streambuf::pbackfail virtual function. */
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typedef int (*_IO_pbackfail_t) __PMT ((_IO_FILE *, int));
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#define _IO_PBACKFAIL(FP, CH) JUMP1 (__pbackfail, FP, CH)
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/* The 'xsputn' hook writes upto N characters from buffer DATA.
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Returns the number of character actually written.
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It matches the streambuf::xsputn virtual function. */
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typedef _IO_size_t (*_IO_xsputn_t) __PMT ((_IO_FILE *FP, const void *DATA,
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_IO_size_t N));
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#define _IO_XSPUTN(FP, DATA, N) JUMP2 (__xsputn, FP, DATA, N)
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/* The 'xsgetn' hook reads upto N characters into buffer DATA.
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Returns the number of character actually read.
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It matches the streambuf::xsgetn virtual function. */
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typedef _IO_size_t (*_IO_xsgetn_t) __PMT ((_IO_FILE *FP, void *DATA,
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_IO_size_t N));
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#define _IO_XSGETN(FP, DATA, N) JUMP2 (__xsgetn, FP, DATA, N)
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/* The 'seekoff' hook moves the stream position to a new position
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relative to the start of the file (if DIR==0), the current position
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(MODE==1), or the end of the file (MODE==2).
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It matches the streambuf::seekoff virtual function.
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It is also used for the ANSI fseek function. */
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#if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
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typedef _IO_off64_t (*_IO_seekoff_t) __PMT ((_IO_FILE *FP, _IO_off64_t OFF,
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int DIR, int MODE));
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#else
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typedef _IO_off_t (*_IO_seekoff_t) __PMT ((_IO_FILE *FP, _IO_off_t OFF,
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int DIR, int MODE));
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#endif
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#define _IO_SEEKOFF(FP, OFF, DIR, MODE) JUMP3 (__seekoff, FP, OFF, DIR, MODE)
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/* The 'seekpos' hook also moves the stream position,
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but to an absolute position given by a fpos_t (seekpos).
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It matches the streambuf::seekpos virtual function.
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It is also used for the ANSI fgetpos and fsetpos functions. */
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/* The _IO_seek_cur and _IO_seek_end options are not allowed. */
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#if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
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typedef _IO_off64_t (*_IO_seekpos_t) __PMT ((_IO_FILE *, _IO_off64_t, int));
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#else
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typedef _IO_off_t (*_IO_seekpos_t) __PMT ((_IO_FILE *, _IO_off_t, int));
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#endif
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#define _IO_SEEKPOS(FP, POS, FLAGS) JUMP2 (__seekpos, FP, POS, FLAGS)
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/* The 'setbuf' hook gives a buffer to the file.
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It matches the streambuf::setbuf virtual function. */
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typedef _IO_FILE* (*_IO_setbuf_t) __PMT ((_IO_FILE *, char *, _IO_ssize_t));
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#define _IO_SETBUF(FP, BUFFER, LENGTH) JUMP2 (__setbuf, FP, BUFFER, LENGTH)
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/* The 'sync' hook attempts to synchronize the internal data structures
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of the file with the external state.
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It matches the streambuf::sync virtual function. */
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typedef int (*_IO_sync_t) __PMT ((_IO_FILE *));
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#define _IO_SYNC(FP) JUMP0 (__sync, FP)
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/* The 'doallocate' hook is used to tell the file to allocate a buffer.
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It matches the streambuf::doallocate virtual function, which is not
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in the ANSI/ISO C++ standard, but is part traditional implementations. */
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typedef int (*_IO_doallocate_t) __PMT ((_IO_FILE *));
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#define _IO_DOALLOCATE(FP) JUMP0 (__doallocate, FP)
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/* The following four hooks (sysread, syswrite, sysclose, sysseek, and
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sysstat) are low-level hooks specific to this implementation.
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There is no correspondence in the ANSI/ISO C++ standard library.
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The hooks basically correspond to the Unix system functions
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(read, write, close, lseek, and stat) except that a _IO_FILE*
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parameter is used instead of a integer file descriptor; the default
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implementation used for normal files just calls those functions.
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The advantage of overriding these functions instead of the higher-level
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ones (underflow, overflow etc) is that you can leave all the buffering
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higher-level functions. */
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/* The 'sysread' hook is used to read data from the external file into
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an existing buffer. It generalizes the Unix read(2) function.
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It matches the streambuf::sys_read virtual function, which is
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specific to this implementation. */
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typedef _IO_ssize_t (*_IO_read_t) __PMT ((_IO_FILE *, void *, _IO_ssize_t));
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#define _IO_SYSREAD(FP, DATA, LEN) JUMP2 (__read, FP, DATA, LEN)
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/* The 'syswrite' hook is used to write data from an existing buffer
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to an external file. It generalizes the Unix write(2) function.
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It matches the streambuf::sys_write virtual function, which is
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specific to this implementation. */
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typedef _IO_ssize_t (*_IO_write_t) __PMT ((_IO_FILE *,const void *,_IO_ssize_t));
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#define _IO_SYSWRITE(FP, DATA, LEN) JUMP2 (__write, FP, DATA, LEN)
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/* The 'sysseek' hook is used to re-position an external file.
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It generalizes the Unix lseek(2) function.
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It matches the streambuf::sys_seek virtual function, which is
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specific to this implementation. */
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#if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
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typedef _IO_off64_t (*_IO_seek_t) __PMT ((_IO_FILE *, _IO_off64_t, int));
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#else
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typedef _IO_off_t (*_IO_seek_t) __PMT ((_IO_FILE *, _IO_off_t, int));
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#endif
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#define _IO_SYSSEEK(FP, OFFSET, MODE) JUMP2 (__seek, FP, OFFSET, MODE)
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/* The 'sysclose' hook is used to finalize (close, finish up) an
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external file. It generalizes the Unix close(2) function.
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It matches the streambuf::sys_close virtual function, which is
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specific to this implementation. */
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typedef int (*_IO_close_t) __PMT ((_IO_FILE *)); /* finalize */
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#define _IO_SYSCLOSE(FP) JUMP0 (__close, FP)
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/* The 'sysstat' hook is used to get information about an external file
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into a struct stat buffer. It generalizes the Unix fstat(2) call.
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It matches the streambuf::sys_stat virtual function, which is
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specific to this implementation. */
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typedef int (*_IO_stat_t) __PMT ((_IO_FILE *, void *));
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#define _IO_SYSSTAT(FP, BUF) JUMP1 (__stat, FP, BUF)
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#if _G_IO_IO_FILE_VERSION == 0x20001
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/* The 'showmany' hook can be used to get an image how much input is
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available. In many cases the answer will be 0 which means unknown
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but some cases one can provide real information. */
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typedef int (*_IO_showmanyc_t) __PMT ((_IO_FILE *));
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#define _IO_SHOWMANYC(FP) JUMP0 (__showmanyc, FP)
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/* The 'imbue' hook is used to get information about the currently
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installed locales. */
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typedef void (*_IO_imbue_t) __PMT ((_IO_FILE *, void *));
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#define _IO_IMBUE(FP, LOCALE) JUMP1 (__imbue, FP, LOCALE)
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#endif
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#define _IO_CHAR_TYPE char /* unsigned char ? */
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#define _IO_INT_TYPE int
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struct _IO_jump_t
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{
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JUMP_FIELD(_G_size_t, __dummy);
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#ifdef _G_USING_THUNKS
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JUMP_FIELD(_G_size_t, __dummy2);
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#endif
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JUMP_FIELD(_IO_finish_t, __finish);
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JUMP_FIELD(_IO_overflow_t, __overflow);
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JUMP_FIELD(_IO_underflow_t, __underflow);
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JUMP_FIELD(_IO_underflow_t, __uflow);
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JUMP_FIELD(_IO_pbackfail_t, __pbackfail);
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/* showmany */
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JUMP_FIELD(_IO_xsputn_t, __xsputn);
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JUMP_FIELD(_IO_xsgetn_t, __xsgetn);
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JUMP_FIELD(_IO_seekoff_t, __seekoff);
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JUMP_FIELD(_IO_seekpos_t, __seekpos);
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JUMP_FIELD(_IO_setbuf_t, __setbuf);
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JUMP_FIELD(_IO_sync_t, __sync);
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JUMP_FIELD(_IO_doallocate_t, __doallocate);
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JUMP_FIELD(_IO_read_t, __read);
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JUMP_FIELD(_IO_write_t, __write);
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JUMP_FIELD(_IO_seek_t, __seek);
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JUMP_FIELD(_IO_close_t, __close);
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JUMP_FIELD(_IO_stat_t, __stat);
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#if _G_IO_IO_FILE_VERSION == 0x20001
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JUMP_FIELD(_IO_showmanyc_t, __showmanyc);
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JUMP_FIELD(_IO_imbue_t, __imbue);
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#endif
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#if 0
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get_column;
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set_column;
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#endif
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};
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/* We always allocate an extra word following an _IO_FILE.
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This contains a pointer to the function jump table used.
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This is for compatibility with C++ streambuf; the word can
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be used to smash to a pointer to a virtual function table. */
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struct _IO_FILE_plus
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{
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_IO_FILE file;
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const struct _IO_jump_t *vtable;
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};
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/* Generic functions */
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#if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
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extern _IO_off64_t _IO_seekoff __P ((_IO_FILE *, _IO_off64_t, int, int));
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extern _IO_off64_t _IO_seekpos __P ((_IO_FILE *, _IO_off64_t, int));
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#else
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extern _IO_off_t _IO_seekoff __P ((_IO_FILE *, _IO_off_t, int, int));
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extern _IO_off_t _IO_seekpos __P ((_IO_FILE *, _IO_off_t, int));
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#endif
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extern void _IO_switch_to_main_get_area __P ((_IO_FILE *));
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extern void _IO_switch_to_backup_area __P ((_IO_FILE *));
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extern int _IO_switch_to_get_mode __P ((_IO_FILE *));
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extern void _IO_init __P ((_IO_FILE *, int));
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extern int _IO_sputbackc __P ((_IO_FILE *, int));
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extern int _IO_sungetc __P ((_IO_FILE *));
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extern void _IO_un_link __P ((_IO_FILE *));
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extern void _IO_link_in __P ((_IO_FILE *));
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extern void _IO_doallocbuf __P ((_IO_FILE *));
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extern void _IO_unsave_markers __P ((_IO_FILE *));
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extern void _IO_setb __P ((_IO_FILE *, char *, char *, int));
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extern unsigned _IO_adjust_column __P ((unsigned, const char *, int));
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#define _IO_sputn(__fp, __s, __n) _IO_XSPUTN (__fp, __s, __n)
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/* Marker-related function. */
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extern void _IO_init_marker __P ((struct _IO_marker *, _IO_FILE *));
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extern void _IO_remove_marker __P ((struct _IO_marker *));
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extern int _IO_marker_difference __P ((struct _IO_marker *,
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struct _IO_marker *));
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extern int _IO_marker_delta __P ((struct _IO_marker *));
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extern int _IO_seekmark __P ((_IO_FILE *, struct _IO_marker *, int));
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/* Default jumptable functions. */
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extern int _IO_default_underflow __P ((_IO_FILE *));
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extern int _IO_default_uflow __P ((_IO_FILE *));
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extern int _IO_default_doallocate __P ((_IO_FILE *));
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extern void _IO_default_finish __P ((_IO_FILE *, int));
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extern int _IO_default_pbackfail __P ((_IO_FILE *, int));
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extern _IO_FILE* _IO_default_setbuf __P ((_IO_FILE *, char *, _IO_ssize_t));
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extern _IO_size_t _IO_default_xsputn __P ((_IO_FILE *, const void *,
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_IO_size_t));
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extern _IO_size_t _IO_default_xsgetn __P ((_IO_FILE *, void *, _IO_size_t));
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#if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
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extern _IO_off64_t _IO_default_seekoff __P ((_IO_FILE *,
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_IO_off64_t, int, int));
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extern _IO_off64_t _IO_default_seekpos __P ((_IO_FILE *,
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_IO_off64_t, int));
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#else
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extern _IO_off_t _IO_default_seekoff __P ((_IO_FILE *, _IO_off_t, int, int));
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extern _IO_off_t _IO_default_seekpos __P ((_IO_FILE *, _IO_off_t, int));
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#endif
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extern _IO_ssize_t _IO_default_write __P ((_IO_FILE *, const void *,
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_IO_ssize_t));
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extern _IO_ssize_t _IO_default_read __P ((_IO_FILE *, void *, _IO_ssize_t));
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extern int _IO_default_stat __P ((_IO_FILE *, void *));
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#if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
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extern _IO_off64_t _IO_default_seek __P ((_IO_FILE *, _IO_off64_t, int));
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#else
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extern _IO_off_t _IO_default_seek __P ((_IO_FILE *, _IO_off_t, int));
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#endif
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extern int _IO_default_sync __P ((_IO_FILE *));
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#define _IO_default_close ((_IO_close_t) _IO_default_sync)
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extern struct _IO_jump_t _IO_file_jumps;
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extern struct _IO_jump_t _IO_streambuf_jumps;
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extern struct _IO_jump_t _IO_proc_jumps;
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extern struct _IO_jump_t _IO_str_jumps;
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extern int _IO_do_write __P ((_IO_FILE *, const char *, _IO_size_t));
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extern int _IO_flush_all __P ((void));
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extern void _IO_cleanup __P ((void));
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extern void _IO_flush_all_linebuffered __P ((void));
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#define _IO_do_flush(_f) \
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|
_IO_do_write(_f, (_f)->_IO_write_base, \
|
|
(_f)->_IO_write_ptr-(_f)->_IO_write_base)
|
|
#define _IO_in_put_mode(_fp) ((_fp)->_flags & _IO_CURRENTLY_PUTTING)
|
|
#define _IO_mask_flags(fp, f, mask) \
|
|
((fp)->_flags = ((fp)->_flags & ~(mask)) | ((f) & (mask)))
|
|
#define _IO_setg(fp, eb, g, eg) ((fp)->_IO_read_base = (eb),\
|
|
(fp)->_IO_read_ptr = (g), (fp)->_IO_read_end = (eg))
|
|
#define _IO_setp(__fp, __p, __ep) \
|
|
((__fp)->_IO_write_base = (__fp)->_IO_write_ptr = __p, (__fp)->_IO_write_end = (__ep))
|
|
#define _IO_have_backup(fp) ((fp)->_IO_save_base != NULL)
|
|
#define _IO_in_backup(fp) ((fp)->_flags & _IO_IN_BACKUP)
|
|
#define _IO_have_markers(fp) ((fp)->_markers != NULL)
|
|
#define _IO_blen(fp) ((fp)->_IO_buf_end - (fp)->_IO_buf_base)
|
|
|
|
/* Jumptable functions for files. */
|
|
|
|
extern int _IO_file_doallocate __P ((_IO_FILE *));
|
|
extern _IO_FILE* _IO_file_setbuf __P ((_IO_FILE *, char *, _IO_ssize_t));
|
|
#if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
|
|
extern _IO_off64_t _IO_file_seekoff __P ((_IO_FILE *, _IO_off64_t, int, int));
|
|
extern _IO_off64_t _IO_file_seek __P ((_IO_FILE *, _IO_off64_t, int));
|
|
#else
|
|
extern _IO_off_t _IO_file_seekoff __P ((_IO_FILE *, _IO_off_t, int, int));
|
|
extern _IO_off_t _IO_file_seek __P ((_IO_FILE *, _IO_off_t, int));
|
|
#endif
|
|
extern _IO_size_t _IO_file_xsputn __P ((_IO_FILE *, const void *, _IO_size_t));
|
|
extern int _IO_file_stat __P ((_IO_FILE *, void *));
|
|
extern int _IO_file_close __P ((_IO_FILE *));
|
|
extern int _IO_file_underflow __P ((_IO_FILE *));
|
|
extern int _IO_file_overflow __P ((_IO_FILE *, int));
|
|
#define _IO_file_is_open(__fp) ((__fp)->_fileno >= 0)
|
|
extern void _IO_file_init __P ((_IO_FILE *));
|
|
extern _IO_FILE* _IO_file_attach __P ((_IO_FILE *, int));
|
|
extern _IO_FILE* _IO_file_open __P ((_IO_FILE *, const char *, int, int,
|
|
int, int));
|
|
#if _G_IO_IO_FILE_VERSION == 0x20001
|
|
extern _IO_FILE* _IO_file_fopen __P ((_IO_FILE *, const char *, const char *,
|
|
int));
|
|
#else
|
|
extern _IO_FILE* _IO_file_fopen __P ((_IO_FILE *, const char *, const char *));
|
|
#endif
|
|
extern _IO_ssize_t _IO_file_write __P ((_IO_FILE *, const void *,
|
|
_IO_ssize_t));
|
|
extern _IO_ssize_t _IO_file_read __P ((_IO_FILE *, void *, _IO_ssize_t));
|
|
extern int _IO_file_sync __P ((_IO_FILE *));
|
|
extern int _IO_file_close_it __P ((_IO_FILE *));
|
|
extern void _IO_file_finish __P ((_IO_FILE *, int));
|
|
|
|
/* Jumptable functions for proc_files. */
|
|
extern _IO_FILE* _IO_proc_open __P ((_IO_FILE *, const char *, const char *));
|
|
extern int _IO_proc_close __P ((_IO_FILE *));
|
|
|
|
/* Jumptable functions for strfiles. */
|
|
extern int _IO_str_underflow __P ((_IO_FILE *));
|
|
extern int _IO_str_overflow __P ((_IO_FILE *, int));
|
|
extern int _IO_str_pbackfail __P ((_IO_FILE *, int));
|
|
#if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
|
|
extern _IO_off64_t _IO_str_seekoff __P ((_IO_FILE *, _IO_off64_t, int, int));
|
|
#else
|
|
extern _IO_off_t _IO_str_seekoff __P ((_IO_FILE *, _IO_off_t, int, int));
|
|
#endif
|
|
extern void _IO_str_finish __P ((_IO_FILE *, int));
|
|
|
|
/* Other strfile functions */
|
|
extern void _IO_str_init_static __P ((_IO_FILE *, char *, int, char *));
|
|
extern void _IO_str_init_readonly __P ((_IO_FILE *, const char *, int));
|
|
extern _IO_ssize_t _IO_str_count __P ((_IO_FILE *));
|
|
|
|
extern int _IO_vasprintf __P ((char **result_ptr, __const char *format,
|
|
_IO_va_list args));
|
|
extern int _IO_vdprintf __P ((int d, __const char *format, _IO_va_list arg));
|
|
extern int _IO_vsnprintf __P ((char *string, _IO_size_t maxlen,
|
|
__const char *format, _IO_va_list args));
|
|
|
|
|
|
extern _IO_size_t _IO_getline __P ((_IO_FILE *,char *, _IO_size_t, int, int));
|
|
extern _IO_size_t _IO_getline_info __P ((_IO_FILE *,char *, _IO_size_t,
|
|
int, int, int *));
|
|
extern _IO_ssize_t _IO_getdelim __P ((char **, _IO_size_t *, int, _IO_FILE *));
|
|
extern double _IO_strtod __P ((const char *, char **));
|
|
extern char *_IO_dtoa __P ((double __d, int __mode, int __ndigits,
|
|
int *__decpt, int *__sign, char **__rve));
|
|
extern int _IO_outfloat __P ((double __value, _IO_FILE *__sb, int __type,
|
|
int __width, int __precision, int __flags,
|
|
int __sign_mode, int __fill));
|
|
|
|
extern _IO_FILE *_IO_list_all;
|
|
extern void (*_IO_cleanup_registration_needed) __PMT ((void));
|
|
|
|
#ifndef EOF
|
|
# define EOF (-1)
|
|
#endif
|
|
#ifndef NULL
|
|
# if defined __GNUG__ && \
|
|
(__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
|
|
# define NULL (__null)
|
|
# else
|
|
# if !defined(__cplusplus)
|
|
# define NULL ((void*)0)
|
|
# else
|
|
# define NULL (0)
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
#if _G_HAVE_MMAP
|
|
|
|
# include <unistd.h>
|
|
# include <fcntl.h>
|
|
# include <sys/mman.h>
|
|
# include <sys/param.h>
|
|
|
|
# if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
|
|
# define MAP_ANONYMOUS MAP_ANON
|
|
# endif
|
|
|
|
# if !defined(MAP_ANONYMOUS) || !defined(EXEC_PAGESIZE)
|
|
# undef _G_HAVE_MMAP
|
|
# define _G_HAVE_MMAP 0
|
|
# endif
|
|
|
|
#endif /* _G_HAVE_MMAP */
|
|
|
|
#if _G_HAVE_MMAP
|
|
|
|
# ifdef _LIBC
|
|
/* When using this code in the GNU libc we must not pollute the name space. */
|
|
# define mmap __mmap
|
|
# define munmap __munmap
|
|
# endif
|
|
|
|
# define ROUND_TO_PAGE(_S) \
|
|
(((_S) + EXEC_PAGESIZE - 1) & ~(EXEC_PAGESIZE - 1))
|
|
|
|
# define FREE_BUF(_B, _S) \
|
|
munmap ((_B), ROUND_TO_PAGE (_S))
|
|
# define ALLOC_BUF(_B, _S, _R) \
|
|
do { \
|
|
(_B) = (char *) mmap (0, ROUND_TO_PAGE (_S), \
|
|
PROT_READ | PROT_WRITE, \
|
|
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); \
|
|
if ((_B) == (char *) -1) \
|
|
return (_R); \
|
|
} while (0)
|
|
|
|
#else /* _G_HAVE_MMAP */
|
|
|
|
# define FREE_BUF(_B, _S) \
|
|
free(_B)
|
|
# define ALLOC_BUF(_B, _S, _R) \
|
|
do { \
|
|
(_B) = (char*)malloc(_S); \
|
|
if ((_B) == NULL) \
|
|
return (_R); \
|
|
} while (0)
|
|
|
|
#endif /* _G_HAVE_MMAP */
|
|
|
|
#ifndef OS_FSTAT
|
|
# define OS_FSTAT fstat
|
|
#endif
|
|
struct stat;
|
|
extern _IO_ssize_t _IO_read __P ((int, void *, _IO_size_t));
|
|
extern _IO_ssize_t _IO_write __P ((int, const void *, _IO_size_t));
|
|
extern _IO_off_t _IO_lseek __P ((int, _IO_off_t, int));
|
|
extern int _IO_close __P ((int));
|
|
extern int _IO_fstat __P ((int, struct stat *));
|
|
extern int _IO_vscanf __P ((const char *, _IO_va_list));
|
|
|
|
/* Operations on _IO_fpos_t.
|
|
Normally, these are trivial, but we provide hooks for configurations
|
|
where an _IO_fpos_t is a struct.
|
|
Note that _IO_off_t must be an integral type. */
|
|
|
|
/* _IO_pos_BAD is an _IO_off_t value indicating error, unknown, or EOF. */
|
|
#ifndef _IO_pos_BAD
|
|
# if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
|
|
# define _IO_pos_BAD ((_IO_off64_t) -1)
|
|
# else
|
|
# define _IO_pos_BAD ((_IO_off_t) -1)
|
|
# endif
|
|
#endif
|
|
/* _IO_pos_as_off converts an _IO_fpos_t value to an _IO_off_t value. */
|
|
#ifndef _IO_pos_as_off
|
|
# if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
|
|
# define _IO_pos_as_off(__pos) ((_IO_off64_t) (__pos))
|
|
# else
|
|
# define _IO_pos_as_off(__pos) ((_IO_off_t) (__pos))
|
|
# endif
|
|
#endif
|
|
/* _IO_pos_adjust adjust an _IO_fpos_t by some number of bytes. */
|
|
#ifndef _IO_pos_adjust
|
|
# define _IO_pos_adjust(__pos, __delta) ((__pos) += (__delta))
|
|
#endif
|
|
/* _IO_pos_0 is an _IO_fpos_t value indicating beginning of file. */
|
|
#ifndef _IO_pos_0
|
|
# if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
|
|
# define _IO_pos_0 ((_IO_fpos64_t) 0)
|
|
# else
|
|
# define _IO_pos_0 ((_IO_fpos_t) 0)
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#ifdef _IO_MTSAFE_IO
|
|
/* check following! */
|
|
# define FILEBUF_LITERAL(CHAIN, FLAGS, FD) \
|
|
{ _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, CHAIN, FD, \
|
|
0, 0, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock }
|
|
#else
|
|
/* check following! */
|
|
# define FILEBUF_LITERAL(CHAIN, FLAGS, FD) \
|
|
{ _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, CHAIN, FD }
|
|
#endif
|
|
|
|
/* VTABLE_LABEL defines NAME as of the CLASS class.
|
|
CNLENGTH is strlen(#CLASS). */
|
|
#ifdef __GNUC__
|
|
# if _G_VTABLE_LABEL_HAS_LENGTH
|
|
# define VTABLE_LABEL(NAME, CLASS, CNLENGTH) \
|
|
extern char NAME[] asm (_G_VTABLE_LABEL_PREFIX #CNLENGTH #CLASS);
|
|
# else
|
|
# define VTABLE_LABEL(NAME, CLASS, CNLENGTH) \
|
|
extern char NAME[] asm (_G_VTABLE_LABEL_PREFIX #CLASS);
|
|
# endif
|
|
#endif /* __GNUC__ */
|
|
|
|
#if !defined(builtinbuf_vtable) && defined(__cplusplus)
|
|
# ifdef __GNUC__
|
|
VTABLE_LABEL(builtinbuf_vtable, builtinbuf, 10)
|
|
# else
|
|
# if _G_VTABLE_LABEL_HAS_LENGTH
|
|
# define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##10builtinbuf
|
|
# else
|
|
# define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##builtinbuf
|
|
# endif
|
|
# endif
|
|
#endif /* !defined(builtinbuf_vtable) && defined(__cplusplus) */
|
|
|
|
#if defined(__STDC__) || defined(__cplusplus)
|
|
# define _IO_va_start(args, last) va_start(args, last)
|
|
#else
|
|
# define _IO_va_start(args, last) va_start(args)
|
|
#endif
|
|
|
|
extern struct _IO_fake_stdiobuf _IO_stdin_buf, _IO_stdout_buf, _IO_stderr_buf;
|
|
|
|
#if 1
|
|
# define COERCE_FILE(FILE) /* Nothing */
|
|
#else
|
|
/* This is part of the kludge for binary compatibility with old stdio. */
|
|
# define COERCE_FILE(FILE) \
|
|
(((FILE)->_IO_file_flags & _IO_MAGIC_MASK) == _OLD_MAGIC_MASK \
|
|
&& (FILE) = *(FILE**)&((int*)fp)[1])
|
|
#endif
|
|
|
|
#ifdef EINVAL
|
|
# define MAYBE_SET_EINVAL __set_errno (EINVAL)
|
|
#else
|
|
# define MAYBE_SET_EINVAL /* nothing */
|
|
#endif
|
|
|
|
#ifdef IO_DEBUG
|
|
# define CHECK_FILE(FILE, RET) \
|
|
if ((FILE) == NULL) { MAYBE_SET_EINVAL; return RET; } \
|
|
else { COERCE_FILE(FILE); \
|
|
if (((FILE)->_IO_file_flags & _IO_MAGIC_MASK) != _IO_MAGIC) \
|
|
{ MAYBE_SET_EINVAL; return RET; }}
|
|
#else
|
|
# define CHECK_FILE(FILE, RET) COERCE_FILE (FILE)
|
|
#endif
|