/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * 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 <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: main.c,v 1.10 1997/10/01 02:18:14 enami Exp $");
#endif /* not lint */

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

#include "fsutil.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) */
int skipclean;          /* skip clean file systems if preening */
int allow_mmap;         /* Allow the use of mmap(), if possible */

static void usage(void) __dead2;

static void
usage(void)
{

        fprintf(stderr, "%s\n%s\n",
            "usage: fsck_msdosfs -p [-f] filesystem ...",
            "       fsck_msdosfs [-ny] filesystem ...");
        exit(1);
}

int
main(int argc, char **argv)
{
        int ret = 0, erg;
        int ch;

        skipclean = 1;
        allow_mmap = 1;
        while ((ch = getopt(argc, argv, "BCfFnpyM")) != -1) {
                switch (ch) {
                case 'B': /* for fsck_ffs compatibility */
                case 'C':
                        break;
                case 'f':
                        skipclean = 0;
                        break;
                case 'F':
                        /*
                         * We can never run in the background.  We must exit
                         * silently with a nonzero exit code so that fsck(8)
                         * can probe our support for -F.  The exit code
                         * doesn't really matter, but we use an unusual one
                         * in case someone tries -F directly.  The -F flag
                         * is intentionally left out of the usage message.
                         */
                        exit(5);
                case 'n':
                        alwaysno = 1;
                        alwaysyes = 0;
                        break;
                case 'y':
                        alwaysyes = 1;
                        alwaysno = 0;
                        break;

                case 'p':
                        preen = 1;
                        break;

                case 'M':
                        allow_mmap = 0;
                        break;

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

        if (!argc)
                usage();

        while (--argc >= 0) {
                setcdevname(*argv, preen);
                erg = checkfilesys(*argv++);
                if (erg > ret)
                        ret = erg;
        }

        return ret;
}


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

        char prompt[256];
        int c;

        if (alwaysyes || alwaysno || rdonly)
                def = (alwaysyes && !rdonly && !alwaysno);

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

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