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-rw-r--r--libio/freopen64.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/libio/freopen64.c b/libio/freopen64.c
index 8a104c6..fb19ed9 100644
--- a/libio/freopen64.c
+++ b/libio/freopen64.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993,1995,1996,1997,1998,2000 Free Software Foundation, Inc.
+/* Copyright (C) 1993,1995,1996,1997,1998,2000,2001 Free Software Foundation, Inc.
This file is part of the GNU IO Library.
This library is free software; you can redistribute it and/or
@@ -26,6 +26,8 @@
#include "libioP.h"
#include "stdio.h"
+#include <fd_to_filename.h>
+
FILE *
freopen64 (filename, mode, fp)
const char* filename;
@@ -34,15 +36,28 @@ freopen64 (filename, mode, fp)
{
#ifdef _G_OPEN64
FILE *result;
+ int fd = -1;
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);
+ if (filename == NULL && _IO_fileno (fp) >= 0)
+ {
+ fd = dup (_IO_fileno (fp));
+ if (fd != -1)
+ filename = fd_to_filename (fd);
+ }
result = _IO_freopen64 (filename, mode, fp);
if (result != NULL)
/* unbound stream orientation */
result->_mode = 0;
+ if (fd != -1)
+ {
+ close (fd);
+ if (filename != NULL)
+ free ((char *) filename);
+ }
_IO_funlockfile (fp);
_IO_cleanup_region_end (0);
return result;