/*-
 * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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.
 */

#ifndef _OPENSOLARIS_SYS_VFS_H_
#define _OPENSOLARIS_SYS_VFS_H_

#include <sys/param.h>

#ifdef _KERNEL

#include <sys/mount.h>
#include <sys/vnode.h>

#define rootdir rootvnode

typedef struct mount    vfs_t;

#define vfs_flag        mnt_flag
#define vfs_data        mnt_data
#define vfs_count       mnt_ref
#define vfs_fsid        mnt_stat.f_fsid
#define vfs_bsize       mnt_stat.f_bsize
#define vfs_resource    mnt_stat.f_mntfromname

#define v_flag          v_vflag
#define v_vfsp          v_mount

#define VFS_RDONLY      MNT_RDONLY
#define VFS_NOSETUID    MNT_NOSUID
#define VFS_NOEXEC      MNT_NOEXEC

#define fs_vscan(vp, cr, async) (0)

#define VROOT           VV_ROOT

/*
 * Structure defining a mount option for a filesystem.
 * option names are found in mntent.h
 */
typedef struct mntopt {
        char    *mo_name;       /* option name */
        char    **mo_cancel;    /* list of options cancelled by this one */
        char    *mo_arg;        /* argument string for this option */
        int     mo_flags;       /* flags for this mount option */
        void    *mo_data;       /* filesystem specific data */
} mntopt_t;

/*
 * Flags that apply to mount options
 */

#define MO_SET          0x01            /* option is set */
#define MO_NODISPLAY    0x02            /* option not listed in mnttab */
#define MO_HASVALUE     0x04            /* option takes a value */
#define MO_IGNORE       0x08            /* option ignored by parser */
#define MO_DEFAULT      MO_SET          /* option is on by default */
#define MO_TAG          0x10            /* flags a tag set by user program */
#define MO_EMPTY        0x20            /* empty space in option table */

#define VFS_NOFORCEOPT  0x01            /* honor MO_IGNORE (don't set option) */
#define VFS_DISPLAY     0x02            /* Turn off MO_NODISPLAY bit for opt */
#define VFS_NODISPLAY   0x04            /* Turn on MO_NODISPLAY bit for opt */
#define VFS_CREATEOPT   0x08            /* Create the opt if it's not there */

/*
 * Structure holding mount option strings for the mounted file system.
 */
typedef struct mntopts {
        uint_t          mo_count;               /* number of entries in table */
        mntopt_t        *mo_list;               /* list of mount options */
} mntopts_t;

void vfs_setmntopt(vfs_t *vfsp, const char *name, const char *arg,
    int flags __unused);
void vfs_clearmntopt(vfs_t *vfsp, const char *name);
int vfs_optionisset(const vfs_t *vfsp, const char *opt, char **argp);
int mount_snapshot(kthread_t *td, vnode_t **vpp, const char *fstype,
    char *fspath, char *fspec, int fsflags);

typedef uint64_t        vfs_feature_t;

#define VFSFT_XVATTR            0x100000001     /* Supports xvattr for attrs */
#define VFSFT_CASEINSENSITIVE   0x100000002     /* Supports case-insensitive */
#define VFSFT_NOCASESENSITIVE   0x100000004     /* NOT case-sensitive */
#define VFSFT_DIRENTFLAGS       0x100000008     /* Supports dirent flags */
#define VFSFT_ACLONCREATE       0x100000010     /* Supports ACL on create */
#define VFSFT_ACEMASKONACCESS   0x100000020     /* Can use ACEMASK for access */
#define VFSFT_SYSATTR_VIEWS     0x100000040     /* Supports sysattr view i/f */
#define VFSFT_ACCESS_FILTER     0x100000080     /* dirents filtered by access */
#define VFSFT_REPARSE           0x100000100     /* Supports reparse point */
#define VFSFT_ZEROCOPY_SUPPORTED        0x100000200
                                /* Support loaning /returning cache buffer */

#define vfs_set_feature(vfsp, feature)          do { } while (0)
#define vfs_clear_feature(vfsp, feature)        do { } while (0)
#define vfs_has_feature(vfsp, feature)          (0)

#endif  /* _KERNEL */

#endif  /* _OPENSOLARIS_SYS_VFS_H_ */