/*      $OpenBSD: main.c,v 1.24 2018/09/24 21:26:02 deraadt Exp $       */
/*      $NetBSD: main.c,v 1.8 1996/10/17 20:29:53 cgd Exp $     */

/*
 * Copyright (C) 1995 Wolfgang Solfrank
 * Copyright (c) 1995 Martin Husemann
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <stdarg.h>
#include <err.h>

#include "ext.h"

int alwaysno;           /* assume "no" for all questions */
int alwaysyes;          /* assume "yes" for all questions */
int preen;              /* set when preening */
int rdonly;             /* device is opened read only (supersedes above) */

static void usage(void);
int main(int, char **);

static void
usage(void)
{
        errexit("usage: fsck_msdos [-fnpy] filesystem\n");
}

int
main(int argc, char *argv[])
{
        int ch;

        checkroot();

        while ((ch = getopt(argc, argv, "pynf")) != -1) {
                switch (ch) {
                case 'f':
                        /* Ignore for consistency with fsck_ffs */
                        break;

                case 'n':
                        alwaysno = 1;
                        alwaysyes = preen = 0;
                        break;

                case 'y':
                        alwaysyes = 1;
                        alwaysno = preen = 0;
                        break;

                case 'p':
                        preen = 1;
                        alwaysyes = alwaysno = 0;
                        break;

                default:
                        usage();
                        break;
                }
        }
        argc -= optind;
        argv += optind;

        if (argc != 1)
                usage();

        setcdevname(*argv, NULL, preen);
        exit (checkfilesys(blockcheck(*argv)));
}

int
ask(int def, const char *fmt, ...)
{
        va_list ap;

        char prompt[256];
        int c;

        if (preen) {
                if (rdonly)
                        def = 0;
                if (def)
                        printf("FIXED\n");
                return (def);
        }

        va_start(ap, fmt);
        vsnprintf(prompt, sizeof(prompt), fmt, ap);
        va_end(ap);
        if (alwaysyes || rdonly) {
                printf("%s? %s\n", prompt, rdonly ? "no" : "yes");
                return (!rdonly);
        }
        do {
                printf("%s? [Fyn] ", prompt);
                fflush(stdout);
                c = getchar();
                if (c == 'F') {
                        alwaysyes = 1;
                        return (1);
                }
                while (c != '\n' && getchar() != '\n')
                        if (feof(stdin))
                                return (0);
        } while (c != 'y' && c != 'Y' && c != 'n' && c != 'N');
        return (c == 'y' || c == 'Y');
}