2 * This file has been modified for the cdrkit suite.
4 * The behaviour and appearence of the program code below can differ to a major
5 * extent from the version distributed by the original author(s).
7 * For details, see Changelog file distributed with the cdrkit package. If you
8 * received this file from another source then ask the distributing person for
9 * a log of modifications.
13 /* @(#)fcons.c 2.17 04/08/08 Copyright 1986, 1995-2003 J. Schilling */
15 * Copyright (c) 1986, 1995-2003 J. Schilling
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License version 2
20 * as published by the Free Software Foundation.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License along with
28 * this program; see the file COPYING. If not, write to the Free Software
29 * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
35 * Note that because of a definition in schilyio.h we are using fseeko()/ftello()
36 * instead of fseek()/ftell() if available.
39 LOCAL char *fmtab[] = {
42 "w", /* 2 FI_WRITE **1) */
43 "r+", /* 3 FI_READ | FI_WRITE */
44 "b", /* 4 FI_NONE | FI_BINARY */
45 "rb", /* 5 FI_READ | FI_BINARY */
46 "wb", /* 6 FI_WRITE | FI_BINARY **1) */
47 "r+b", /* 7 FI_READ | FI_WRITE | FI_BINARY */
49 /* + FI_APPEND */ "", /* 0 FI_NONE */
50 /* ... */ "r", /* 1 FI_READ */
51 "a", /* 2 FI_WRITE **1) */
52 "a+", /* 3 FI_READ | FI_WRITE */
53 "b", /* 4 FI_NONE | FI_BINARY */
54 "rb", /* 5 FI_READ | FI_BINARY */
55 "ab", /* 6 FI_WRITE | FI_BINARY **1) */
56 "a+b", /* 7 FI_READ | FI_WRITE | FI_BINARY */
60 * 1) fdopen() guarantees not to create/trunc files in this case
62 * "w" will create/trunc files with fopen()
63 * "a" will create files with fopen()
73 int my_gflag = _io_glflag;
75 if (fd == (FILE *)NULL)
77 fmtab[flag&(FI_READ|FI_WRITE|FI_BINARY | FI_APPEND)]);
79 if (fd != (FILE *)NULL) {
80 if (flag & FI_APPEND) {
81 (void) fseek(fd, (off_t)0, SEEK_END);
83 if (flag & FI_UNBUF) {
87 set_my_flag(fd, my_gflag); /* must clear it if fd is reused */
93 return ((FILE *) NULL);