mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
108 lines
3.5 KiB
C
108 lines
3.5 KiB
C
/* Copyright (C) 1993, 1997, 1999, 2000 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA.
|
|
|
|
As a special exception, if you link the code in this file with
|
|
files compiled with a GNU compiler to produce an executable,
|
|
that does not cause the resulting executable to be covered by
|
|
the GNU Lesser General Public License. This exception does not
|
|
however invalidate any other reasons why the executable file
|
|
might be covered by the GNU Lesser General Public License.
|
|
This exception applies to code released by its copyright holders
|
|
in files containing the exception. */
|
|
|
|
/*
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms are permitted
|
|
* provided that the above copyright notice and this paragraph are
|
|
* duplicated in all such forms and that any documentation,
|
|
* advertising materials, and other materials related to such
|
|
* distribution and use acknowledge that the software was developed
|
|
* by the University of California, Berkeley. The name of the
|
|
* University may not be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*/
|
|
|
|
/* Modified for GNU iostream by Per Bothner 1991, 1992. */
|
|
|
|
#ifndef _POSIX_SOURCE
|
|
# define _POSIX_SOURCE
|
|
#endif
|
|
#include "libioP.h"
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#ifdef __STDC__
|
|
#include <stdlib.h>
|
|
#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.
|
|
*
|
|
* As a side effect, we set __SOPT or __SNPT (en/dis-able fseek
|
|
* optimisation) right after the _fstat() that finds the buffer size.
|
|
*/
|
|
|
|
int
|
|
_IO_wfile_doallocate (fp)
|
|
_IO_FILE *fp;
|
|
{
|
|
_IO_size_t size;
|
|
int couldbetty;
|
|
wchar_t *p;
|
|
struct _G_stat64 st;
|
|
|
|
/* Allocate room for the external buffer. */
|
|
if (fp->_IO_buf_base == NULL)
|
|
_IO_file_doallocate (fp);
|
|
|
|
if (fp->_fileno < 0 || _IO_SYSSTAT (fp, &st) < 0)
|
|
{
|
|
couldbetty = 0;
|
|
size = _IO_BUFSIZ;
|
|
#if 0
|
|
/* do not try to optimise fseek() */
|
|
fp->_flags |= __SNPT;
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
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
|
|
}
|
|
ALLOC_WBUF (p, size * sizeof (wchar_t), EOF);
|
|
_IO_wsetb (fp, p, p + size, 1);
|
|
if (couldbetty && isatty (fp->_fileno))
|
|
fp->_flags |= _IO_LINE_BUF;
|
|
return 1;
|
|
}
|