/*      $NetBSD: fsck_v7fs.c,v 1.3 2025/12/31 10:03:53 nia Exp $ */

/*-
 * Copyright (c) 2004, 2011 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by UCHIYAMA Yasushi.
 *
 * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``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 FOUNDATION OR CONTRIBUTORS
 * 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: fsck_v7fs.c,v 1.3 2025/12/31 10:03:53 nia Exp $");
#endif /* not lint */

#include <sys/types.h>
#include <sys/disklabel.h>
#include <sys/ioctl.h>
#include <sys/stat.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <endian.h>
#include <unistd.h>
#include <fcntl.h>
#include <err.h>

#include <fs/v7fs/v7fs.h>
#include "v7fs_impl.h"
#include "fsck_v7fs.h"
#include "progress.h"

static void usage(void) __dead;
static void catopt(char **, const char *);

enum fsck_operate fsck_operate;
bool verbose = true;
#define VPRINTF(fmt, args...)   { if (verbose) printf(fmt, ##args); }

int
main(int argc, char **argv)
{
        const char *device;
        struct disklabel d;
        struct partition *p;
        struct stat st;
        int Fflag = 0;
        int part;
        int fd, ch;
        int endian = BYTE_ORDER;
        int openflags = O_RDWR;
        size_t part_sectors;
        int fsck_flags = 0;
        char *options = 0;
        bool progress_bar_enable = false;

        fsck_operate = ASK;

        if (argc < 2)
                usage();

        while ((ch = getopt(argc, argv, "pPqynfx:dFB:o:")) != -1) {
                switch (ch) {
                        /*
                         * generic fsck options
                         */
                case 'd':       /* Not supported */
                        break;
                case 'f':       /* Always forced */
                        break;
                case 'p':
                        fsck_operate = PREEN;
                        break;
                case 'y':
                        fsck_operate = ALWAYS_YES;
                        break;
                case 'n':
                        fsck_operate = ALWAYS_NO;
                        openflags = O_RDONLY;
                        break;
                case 'P':
                        progress_bar_enable = true;
                        break;
                case 'q':       /* Not supported */
                        break;
                case 'x':       /* Not supported */
                        break;
                        /*
                         * v7fs fsck options
                         */
                case 'F':
                        Fflag = 1;
                        break;
                case 'B':
                        switch (optarg[0]) {
                        case 'l':
                                endian = LITTLE_ENDIAN;
                                break;
                        case 'b':
                                endian = BIG_ENDIAN;
                                break;
                        case 'p':
                                endian = PDP_ENDIAN;
                                break;
                        }
                        break;
                case 'o': /* datablock, freeblock duplication check */
                        if (*optarg)
                                catopt(&options, optarg);
                        break;
                default:
                        usage();
                        /*NOTREACHED*/
                }
        }

        argc -= optind;
        argv += optind;

        if (argc != 1)
                usage();
        device = argv[0];

        if (options) {
                if (strstr(options, "data"))
                        fsck_flags |= V7FS_FSCK_DATABLOCK_DUP;
                if (strstr(options, "free"))
                        fsck_flags |= V7FS_FSCK_FREEBLOCK_DUP;
        }

        if (Fflag) {
                if ((fd = open(device, openflags)) == -1) {
                        pfatal("%s", device);
                }
                if (fstat(fd, &st)) {
                        pfatal("stat");
                }
                part_sectors = st.st_size >> V7FS_BSHIFT;
                setcdevname(device, fsck_operate == PREEN);
        } else {
                /* blockcheck sets 'hot' */
                device = blockcheck(device);
                setcdevname(device, fsck_operate == PREEN);

                if ((fd = open(device, openflags)) == -1) {
                        pfatal("%s", device);
                }
                part = DISKPART(st.st_rdev);

                if (ioctl(fd, DIOCGDINFO, &d) == -1) {
                        pfatal("DIOCGDINFO");
                }
                p = &d.d_partitions[part];
                part_sectors = p->p_size;
                VPRINTF("partition=%d size=%d offset=%d fstype=%d secsize=%d\n",
                    part, p->p_size, p->p_offset, p->p_fstype, d.d_secsize);
                if (p->p_fstype != FS_V7) {
                        pfatal("not a Version 7 partition.");
                }
        }

        progress_switch(progress_bar_enable);
        progress_init();
        progress(&(struct progress_arg){ .cdev = device });

        struct v7fs_mount_device mount;
        mount.device.fd = fd;
        mount.endian = endian;
        mount.sectors = part_sectors;
        int error = v7fs_fsck(&mount, fsck_flags);

        close(fd);

        return error;
}

static void
catopt(char **sp, const char *o)
{
        char *s, *n;

        s = *sp;
        if (s) {
                if (asprintf(&n, "%s,%s", s, o) < 0)
                        err(1, "asprintf");
                free(s);
                s = n;
        } else
                s = strdup(o);
        *sp = s;
}

static void
usage(void)
{

        (void)fprintf(stderr, "usage: %s [-ynpP] [-o options] [-B endian] "
            "special-device\n",
            getprogname());
        (void)fprintf(stderr, "usage: %s -F [-ynpP] [-o options] [-B endian] "
            "file\n",
            getprogname());

        exit(FSCK_EXIT_USAGE);
}