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Insert libio rewrite and its various changes from devo.

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From-SVN: r15129
This commit is contained in:
Brendan Kehoe 1997-09-06 03:44:38 -04:00
parent 1496c1bb0b
commit dbfcb4beac
72 changed files with 3266 additions and 1470 deletions
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72
libio/filedoalloc.c
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@ -1,26 +1,27 @@
/*
Copyright (C) 1993 Free Software Foundation
/* Copyright (C) 1993, 1997 Free Software Foundation, Inc.
This file is part of the GNU IO Library.
This file is part of the GNU IO Library. This library is free
software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option)
any later version.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this library; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
You should have received a copy of the GNU General Public License
along with this library; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA.
As a special exception, if you link this library with files
compiled with a GNU compiler to produce an executable, this does not cause
the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
As a special exception, if you link this library with files
compiled with a GNU compiler to produce an executable, this does
not cause the resulting executable to be covered by the GNU General
Public License. This exception does not however invalidate any
other reasons why the executable file might be covered by the GNU
General Public License. */
/*
* Copyright (c) 1990 The Regents of the University of California.
@ -41,7 +42,9 @@ the executable file might be covered by the GNU General Public License. */
/* Modified for GNU iostream by Per Bothner 1991, 1992. */
#define _POSIX_SOURCE
#ifndef _POSIX_SOURCE
# define _POSIX_SOURCE
#endif
#include "libioP.h"
#include <sys/types.h>
#include <sys/stat.h>
@ -50,6 +53,11 @@ the executable file might be covered by the GNU General Public License. */
#include <unistd.h>
#endif
#ifdef _LIBC
# undef isatty
# define isatty(Fd) __isatty (Fd)
#endif
/*
* Allocate a file buffer, or switch to unbuffered I/O.
* Per the ANSI C standard, ALL tty devices default to line buffered.
@ -59,21 +67,23 @@ the executable file might be covered by the GNU General Public License. */
*/
int
DEFUN(_IO_file_doallocate, (fp),
register _IO_FILE *fp)
_IO_file_doallocate (fp)
_IO_FILE *fp;
{
register _IO_size_t size;
_IO_size_t size;
int couldbetty;
register char *p;
char *p;
struct stat st;
#ifndef _LIBC
/* If _IO_cleanup_registration_needed is non-zero, we should call the
function it points to. This is to make sure _IO_cleanup gets called
on exit. We call it from _IO_file_doallocate, since that is likely
to get called by any program that does buffered I/O. */
if (_IO_cleanup_registration_needed)
(*_IO_cleanup_registration_needed)();
(*_IO_cleanup_registration_needed) ();
#endif
if (fp->_fileno < 0 || _IO_SYSSTAT (fp, &st) < 0)
{
couldbetty = 0;
@ -85,18 +95,16 @@ DEFUN(_IO_file_doallocate, (fp),
}
else
{
couldbetty = S_ISCHR(st.st_mode);
couldbetty = S_ISCHR (st.st_mode);
#if _IO_HAVE_ST_BLKSIZE
size = st.st_blksize <= 0 ? _IO_BUFSIZ : st.st_blksize;
#else
size = _IO_BUFSIZ;
#endif
}
p = ALLOC_BUF(size);
if (p == NULL)
return EOF;
_IO_setb(fp, p, p+size, 1);
if (couldbetty && isatty(fp->_fileno))
ALLOC_BUF (p, size, EOF);
_IO_setb (fp, p, p + size, 1);
if (couldbetty && isatty (fp->_fileno))
fp->_flags |= _IO_LINE_BUF;
return 1;
}