summaryrefslogtreecommitdiff
path: root/libc/libio/freopen64.c
diff options
context:
space:
mode:
Diffstat (limited to 'libc/libio/freopen64.c')
-rw-r--r--libc/libio/freopen64.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/libc/libio/freopen64.c b/libc/libio/freopen64.c
new file mode 100644
index 000000000..f8da78c46
--- /dev/null
+++ b/libc/libio/freopen64.c
@@ -0,0 +1,76 @@
+/* Copyright (C) 1993,1995,1996,1997,1998,2000,2001,2002, 2003
+ 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. */
+
+#include "libioP.h"
+#include "stdio.h"
+#include <stdlib.h>
+
+#include <fd_to_filename.h>
+
+FILE *
+freopen64 (filename, mode, fp)
+ const char* filename;
+ const char* mode;
+ FILE *fp;
+{
+#ifdef _G_OPEN64
+ FILE *result;
+ int fd = -1;
+ CHECK_FILE (fp, NULL);
+ if (!(fp->_flags & _IO_IS_FILEBUF))
+ return NULL;
+ _IO_acquire_lock (fp);
+ if (filename == NULL && _IO_fileno (fp) >= 0)
+ {
+ fd = __dup (_IO_fileno (fp));
+ if (fd != -1)
+ filename = fd_to_filename (fd);
+ }
+ INTUSE(_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 = INTUSE(_IO_file_fopen) (fp, filename, mode, 0);
+ if (result != NULL)
+ result = __fopen_maybe_mmap (result);
+ if (result != NULL)
+ /* unbound stream orientation */
+ result->_mode = 0;
+ if (fd != -1)
+ {
+ __close (fd);
+ if (filename != NULL)
+ free ((char *) filename);
+ }
+ _IO_release_lock (fp);
+ return result;
+#else
+ __set_errno (ENOSYS);
+ return NULL;
+#endif
+}