diff options
Diffstat (limited to 'libio/freopen64.c')
| -rw-r--r-- | libio/freopen64.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/libio/freopen64.c b/libio/freopen64.c index 8a104c6080..fb19ed9029 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; |