-/*
-Copyright (C) 1993 Free Software Foundation
+/* Copyright (C) 1993-2014 Free Software Foundation, Inc.
+ This file is part of the GNU C 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.
+ 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.
-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.
+ 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 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 Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>.
-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 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.
- */
+ Copyright (C) 1990 The Regents of the University of California.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ 4. Neither the name of the University nor the names of its contributors
+ may be used to endorse or promote products derived from this software
+ without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ SUCH DAMAGE.*/
/* Modified for GNU iostream by Per Bothner 1991, 1992. */
#include "libioP.h"
#include <sys/types.h>
#include <sys/stat.h>
-#ifdef __STDC__
#include <stdlib.h>
-#endif
+#include <unistd.h>
+
#ifdef _LIBC
-# include <unistd.h>
+# undef isatty
+# define isatty(Fd) __isatty (Fd)
+
+# include <device-nrs.h>
#endif
+
+static int
+local_isatty (int fd)
+{
+ int save_errno = errno;
+ int res = isatty (fd);
+ __set_errno (save_errno);
+ return res;
+}
+
+
/*
* Allocate a file buffer, or switch to unbuffered I/O.
* Per the ANSI C standard, ALL tty devices default to line buffered.
*/
int
-DEFUN(_IO_file_doallocate, (fp),
- register _IO_FILE *fp)
+_IO_file_doallocate (fp)
+ _IO_FILE *fp;
{
- register _IO_size_t size;
- int couldbetty;
- register char *p;
- struct stat st;
+ _IO_size_t size;
+ char *p;
+ struct stat64 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)();
+ if (__builtin_expect (_IO_cleanup_registration_needed != NULL, 0))
+ (*_IO_cleanup_registration_needed) ();
#endif
- if (fp->_fileno < 0 || _IO_SYSSTAT (fp, &st) < 0)
+ size = _IO_BUFSIZ;
+ if (fp->_fileno >= 0 && __builtin_expect (_IO_SYSSTAT (fp, &st), 0) >= 0)
{
- couldbetty = 0;
- size = _IO_BUFSIZ;
-#if 0
- /* do not try to optimise fseek() */
- fp->_flags |= __SNPT;
+ if (S_ISCHR (st.st_mode))
+ {
+ /* Possibly a tty. */
+ if (
+#ifdef DEV_TTY_P
+ DEV_TTY_P (&st) ||
#endif
- }
- else
- {
- couldbetty = S_ISCHR(st.st_mode);
+ local_isatty (fp->_fileno))
+ fp->_flags |= _IO_LINE_BUF;
+ }
#if _IO_HAVE_ST_BLKSIZE
- size = st.st_blksize <= 0 ? _IO_BUFSIZ : st.st_blksize;
-#else
- size = _IO_BUFSIZ;
+ if (st.st_blksize > 0)
+ size = st.st_blksize;
#endif
}
- ALLOC_BUF(p, size, EOF);
- _IO_setb(fp, p, p+size, 1);
- if (couldbetty && __isatty (fp->_fileno))
- fp->_flags |= _IO_LINE_BUF;
+ ALLOC_BUF (p, size, EOF);
+ _IO_setb (fp, p, p + size, 1);
return 1;
}
+libc_hidden_def (_IO_file_doallocate)
projects / thirdparty / glibc.git / blobdiff