/*      $NetBSD: newfs_v7fs.c,v 1.7 2026/01/17 16:42:15 rillig 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: newfs_v7fs.c,v 1.7 2026/01/17 16:42:15 rillig Exp $");
#endif /* not lint */

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

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

#include <fs/v7fs/v7fs.h>
#include "v7fs_impl.h"
#include "progress.h"
#include "newfs_v7fs.h"

static void usage(void) __dead;
static bool progress_bar_enable = false;
int v7fs_newfs_verbose = 3;     /* newfs compatible */

int
main(int argc, char **argv)
{
        const char *device;
        struct disklabel d;
        struct partition *p;
        struct stat st;
        uint32_t partsize;
        int Fflag, Zflag;
        int part;
        int fd, ch;
        int endian = _BYTE_ORDER;
        int32_t maxfile = 0;

        if (argc < 2)
                usage();

        Fflag = Zflag = partsize = 0;
        while ((ch = getopt(argc, argv, "FZs:n:B:V:")) != -1) {
                switch (ch) {
                case 'V':
                        v7fs_newfs_verbose = atoi(optarg);
                        break;
                case 'F':
                        Fflag = 1;
                        break;
                case 's':
                        partsize = atoi(optarg);
                        break;
                case 'n':
                        maxfile = atoi(optarg);
                        break;
                case 'Z':
                        Zflag = 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;
                default:
                        usage();
                        /*NOTREACHED*/
                }
        }
        argc -= optind;
        argv += optind;

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

        progress_bar_enable = v7fs_newfs_verbose > 1;


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

        if (!Fflag) {
                if ((fd = open(device, O_RDWR)) == -1) {
                        err(EXIT_FAILURE, "%s", device);
                }
                if (fstat(fd, &st) != 0) {
                        goto err_exit;
                }
                if (!S_ISCHR(st.st_mode)) {
                        warnx("not a raw device");
                }

                part = DISKPART(st.st_rdev);

                if (ioctl(fd, DIOCGDINFO, &d) == -1) {
                        goto err_exit;
                }
                p = &d.d_partitions[part];
                if (v7fs_newfs_verbose) {
                        printf("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) {
                        warnx("not a Version 7 partition");
                        goto err_exit;
                }
                partsize = p->p_size;
        } else {
                off_t filesize;
                uint8_t zbuf[8192] = {0, };

                if (partsize == 0) {
                        errx(EXIT_FAILURE, "-F requires -s");
                }

                filesize = partsize << V7FS_BSHIFT;

                fd = open(device, O_RDWR|O_CREAT|O_TRUNC, 0666);
                if (fd == -1) {
                        err(EXIT_FAILURE, "%s", device);
                }

                if (Zflag) {
                        while (filesize > 0) {
                                size_t writenow = MIN(filesize,
                                    (off_t)sizeof(zbuf));

                                if ((size_t)write(fd, zbuf, writenow) !=
                                    writenow) {
                                        err(EXIT_FAILURE, NULL);
                                }
                                filesize -= writenow;
                        }
                } else {
                        if (lseek(fd, filesize - 1, SEEK_SET) == -1) {
                                goto err_exit;
                        }
                        if (write(fd, zbuf, 1) != 1) {
                                goto err_exit;
                        }
                        if (lseek(fd, 0, SEEK_SET) == -1) {
                                goto err_exit;
                        }
                }
        }

        if (v7fs_newfs(&(struct v7fs_mount_device)
                { .device.fd = fd, .endian = endian, .sectors = partsize },
                maxfile) != 0)
                goto err_exit;

        close(fd);

        return EXIT_SUCCESS;
 err_exit:
        close(fd);
        err(EXIT_FAILURE, NULL);
}

void
progress(const struct progress_arg *p)
{
        static struct progress_arg Progress;
        static char cdev[32];
        static char label[32];

        if (!progress_bar_enable)
                return;

        if (p) {
                Progress = *p;
                if (p->cdev)
                        strcpy(cdev, p->cdev);
                if (p->label)
                        strcpy(label, p->label);
        }

        if (!Progress.tick)
                return;
        if (++Progress.cnt > Progress.tick) {
                Progress.cnt = 0;
                Progress.total++;
                progress_bar(cdev, label, Progress.total, PROGRESS_BAR_GRANULE);
        }
}

static void
usage(void)
{

        (void)fprintf(stderr, "usage: \n%s [-FZ] [-B byte-order]"
            " [-n inodes] [-s sectors] [-V verbose] special\n", getprogname());

        exit(EXIT_FAILURE);
}