-/* Copyright (C) 1993,95,96,97,98,2000 Free Software Foundation, Inc.
- This file is part of the GNU IO Library.
+/* Copyright (C) 1993-2015 Free Software Foundation, Inc.
+ This file is part of the GNU C 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
+ 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
- General Public License for more details.
+ 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. */
#include "libioP.h"
#include "stdio.h"
-
-#ifdef PIC
-extern void *_IO_stdin_used;
-weak_extern (_IO_stdin_used);
-#endif
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
#include <shlib-compat.h>
+#include <fd_to_filename.h>
+
+#include <kernel-features.h>
FILE*
freopen (filename, mode, fp)
CHECK_FILE (fp, NULL);
if (!(fp->_flags & _IO_IS_FILEBUF))
return NULL;
- _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
- _IO_flockfile (fp);
+ _IO_acquire_lock (fp);
+ int fd = _IO_fileno (fp);
+ const char *gfilename = (filename == NULL && fd >= 0
+ ? fd_to_filename (fd) : filename);
+ fp->_flags2 |= _IO_FLAGS2_NOCLOSE;
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
if (&_IO_stdin_used == NULL)
- /* If the shared C library is used by the application binary which
- was linked against the older version of libio, we just use the
- older one even for internal use to avoid trouble since a pointer
- to the old libio may be passed into shared C library and wind
- up here. */
- result = _IO_old_freopen (filename, mode, fp);
+ {
+ /* If the shared C library is used by the application binary which
+ was linked against the older version of libio, we just use the
+ older one even for internal use to avoid trouble since a pointer
+ to the old libio may be passed into shared C library and wind
+ up here. */
+ _IO_old_file_close_it (fp);
+ _IO_JUMPS ((struct _IO_FILE_plus *) fp) = &_IO_old_file_jumps;
+ result = _IO_old_file_fopen (fp, gfilename, mode);
+ }
else
#endif
- result = _IO_freopen (filename, mode, fp);
- _IO_funlockfile (fp);
- _IO_cleanup_region_end (0);
+ {
+ _IO_file_close_it (fp);
+ _IO_JUMPS ((struct _IO_FILE_plus *) fp) = &_IO_file_jumps;
+ if (_IO_vtable_offset (fp) == 0 && fp->_wide_data != NULL)
+ fp->_wide_data->_wide_vtable = &_IO_wfile_jumps;
+ result = _IO_file_fopen (fp, gfilename, mode, 1);
+ if (result != NULL)
+ result = __fopen_maybe_mmap (result);
+ }
+ fp->_flags2 &= ~_IO_FLAGS2_NOCLOSE;
+ if (result != NULL)
+ {
+ /* unbound stream orientation */
+ result->_mode = 0;
+
+ if (fd != -1)
+ {
+#ifdef O_CLOEXEC
+# ifndef __ASSUME_DUP3
+ int newfd;
+ if (__have_dup3 < 0)
+ newfd = -1;
+ else
+ newfd =
+# endif
+ __dup3 (_IO_fileno (result), fd,
+ (result->_flags2 & _IO_FLAGS2_CLOEXEC) != 0
+ ? O_CLOEXEC : 0);
+#else
+# define newfd 1
+#endif
+
+#ifndef __ASSUME_DUP3
+ if (newfd < 0)
+ {
+ if (errno == ENOSYS)
+ __have_dup3 = -1;
+
+ __dup2 (_IO_fileno (result), fd);
+ if ((result->_flags2 & _IO_FLAGS2_CLOEXEC) != 0)
+ __fcntl (fd, F_SETFD, FD_CLOEXEC);
+ }
+#endif
+ __close (_IO_fileno (result));
+ _IO_fileno (result) = fd;
+ }
+ }
+ else if (fd != -1)
+ __close (fd);
+ if (filename == NULL)
+ free ((char *) gfilename);
+
+ _IO_release_lock (fp);
return result;
}
projects / thirdparty / glibc.git / blobdiff