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/* @(#)cvmod.c 2.3 96/02/04 Copyright 1986, 1995 J. Schilling */
/*
* Copyright (c) 1986, 1995 J. Schilling
*/
/* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include "io.h"
#include <fcntl.h>
#ifndef O_BINARY
#define O_BINARY 0
#endif
int _cvmod(mode, omode, flag)
const char *mode;
int *omode;
int *flag;
{
while (*mode){
switch (*mode) {
case 'r': *omode |= O_RDONLY; *flag |= FI_READ; break;
case 'w': *omode |= O_WRONLY; *flag |= FI_WRITE; break;
case 'e': *omode |= O_EXCL; break;
case 'c': *omode |= O_CREAT; *flag |= FI_CREATE; break;
case 't': *omode |= O_TRUNC; *flag |= FI_TRUNC; break;
case 'a': *omode |= O_APPEND; *flag |= FI_APPEND; break;
case 'u': *flag |= FI_UNBUF; break;
/* dummy on UNIX */
case 'b': *omode |= O_BINARY; *flag |= FI_BINARY; break;
default: raisecond(_badmode, 0L);
return 0;
}
mode++;
}
if (*flag & FI_READ && *flag & FI_WRITE) {
*omode &= ~(O_RDONLY|O_WRONLY);
*omode |= O_RDWR;
}
return 1;
}
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