/*-
 * Copyright (c) 1993, 1994
 *      The Regents of the University of California.  All rights reserved.
 *
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 * @(#) Copyright (c) 1993, 1994 The Regents of the University of California.  All rights reserved.
 * @(#)mount_ufs.c      8.4 (Berkeley) 4/26/95
 * $FreeBSD: src/sbin/mount/mount_ufs.c,v 1.16.2.3 2001/08/01 08:27:29 obrien Exp $
 */

#include <sys/param.h>
#include <sys/mount.h>
#include <sys/sysctl.h>

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

#include <vfs/ufs/ufsmount.h>

#include "extern.h"

static void ufs_usage(void);

static struct mntopt mopts[] = {
        MOPT_STDOPTS,
        MOPT_ASYNC,
        MOPT_FORCE,
        MOPT_SYNC,
        MOPT_UPDATE,
        MOPT_IGNORE,
        MOPT_TRIM,
        MOPT_NULL
};

int mount_ufs(int, const char **);

int
mount_ufs(int argc, const char **argv)
{
        struct ufs_args args;
        int ch, mntflags;
        const char *fs_name;
        struct vfsconf vfc;
        int error = 0;

        mntflags = 0;
        optind = optreset = 1;          /* Reset for parse of new argv. */
        while ((ch = getopt(argc, __DECONST(char **, argv), "o:")) != -1)
                switch (ch) {
                case 'o':
                        getmntopts(optarg, mopts, &mntflags, 0);
                        break;
                case '?':
                default:
                        ufs_usage();
                }
        argc -= optind;
        argv += optind;

        if (argc != 2)
                ufs_usage();

        args.fspec = __DECONST(char *, argv[0]);        /* The name of the device file. */
        fs_name = argv[1];              /* The mount point. */

#define DEFAULT_ROOTUID -2
        args.export.ex_root = DEFAULT_ROOTUID;
        if (mntflags & MNT_RDONLY)
                args.export.ex_flags = MNT_EXRDONLY;
        else
                args.export.ex_flags = 0;

        if (mntflags & MNT_TRIM){
                char sysctl_name[64];
                int trim_enabled = 0;
                size_t olen = sizeof(trim_enabled);
                char *dev_name = strdup(args.fspec);
                dev_name = strtok(dev_name + strlen("/dev/da"),"s");
                sprintf(sysctl_name, "kern.cam.da.%s.trim_enabled", dev_name);
                if (sysctlbyname(sysctl_name, &trim_enabled, &olen, NULL, 0) < 0) {
                        printf("Device:%s does not support the TRIM command\n",
                            args.fspec);
                        ufs_usage();
                }
                if(!trim_enabled) {
                        printf("Online TRIM selected, but sysctl (%s) "
                            "is not enabled\n",sysctl_name);
                        ufs_usage();
                }
        }

        error = getvfsbyname("ufs", &vfc);
        if (error && vfsisloadable("ufs")) {
                if (vfsload("ufs")) {
                        warn("vfsload(ufs)");
                        return (1);
                }
                endvfsent(); /* flush old table */
                error = getvfsbyname("ufs", &vfc);
        }
        if (error) {
                warnx("ufs filesystem is not available");
                return (1);
        }

        if (mount(vfc.vfc_name, fs_name, mntflags, &args) < 0) {
                switch (errno) {
                case EMFILE:
                        warnx("%s on %s: mount table full",
                                args.fspec, fs_name);
                        break;
                case EINVAL:
                        if (mntflags & MNT_UPDATE)
                                warnx(
                "%s on %s: specified device does not match mounted device",
                                        args.fspec, fs_name);
                        else
                                warnx("%s on %s: incorrect super block",
                                        args.fspec, fs_name);
                        break;
                default:
                        warn("%s", args.fspec);
                        break;
                }
                return (1);
        }
        return (0);
}

static void
ufs_usage(void)
{
        fprintf(stderr, "usage: mount_ufs [-o options] special node\n");
        exit(1);
}