1 /* Copyright (C) 1993,1995,1996,1997,1998,2000,2001,2002 2 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, write to the Free 17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 18 02111-1307 USA. 19 20 As a special exception, if you link the code in this file with 21 files compiled with a GNU compiler to produce an executable, 22 that does not cause the resulting executable to be covered by 23 the GNU Lesser General Public License. This exception does not 24 however invalidate any other reasons why the executable file 25 might be covered by the GNU Lesser General Public License. 26 This exception applies to code released by its copyright holders 27 in files containing the exception. */ 28 29 #include "libioP.h" 30 #include "stdio.h" 31 #include <stdlib.h> 32 33 #include <fd_to_filename.h> 34 35 FILE * 36 freopen64 (filename, mode, fp) 37 const char* filename; 38 const char* mode; 39 FILE *fp; 40 { 41 #ifdef _G_OPEN64 42 FILE *result; 43 int fd = -1; 44 CHECK_FILE (fp, NULL); 45 if (!(fp->_flags & _IO_IS_FILEBUF)) 46 return NULL; 47 _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp); 48 _IO_flockfile (fp); 49 if (filename == NULL && _IO_fileno (fp) >= 0) 50 { 51 fd = __dup (_IO_fileno (fp)); 52 if (fd != -1) 53 filename = fd_to_filename (fd); 54 } 55 INTUSE(_IO_file_close_it) (fp); 56 _IO_JUMPS ((struct _IO_FILE_plus *) fp) = &INTUSE(_IO_file_jumps); 57 // if (fp->_vtable_offset == 0 && fp->_wide_data != NULL) 58 // fp->_wide_data->_wide_vtable = &INTUSE(_IO_wfile_jumps); 59 result = INTUSE(_IO_file_fopen) (fp, filename, mode, 0); 60 if (result != NULL) 61 result = __fopen_maybe_mmap (result); 62 if (result != NULL) 63 /* unbound stream orientation */ 64 result->_mode = 0; 65 if (fd != -1) 66 { 67 __close (fd); 68 if (filename != NULL) 69 free ((char *) filename); 70 } 71 _IO_funlockfile (fp); 72 _IO_cleanup_region_end (0); 73 return result; 74 #else 75 __set_errno (ENOSYS); 76 return NULL; 77 #endif 78 } 79