/*      $OpenBSD: tmpfs_specops.c,v 1.9 2022/06/26 05:20:42 visa Exp $  */
/*      $NetBSD: tmpfs_specops.c,v 1.10 2011/05/24 20:17:49 rmind Exp $ */

/*
 * Copyright (c) 2005 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Julio M. Merino Vidal, developed as part of Google's Summer of Code
 * 2005 program.
 *
 * 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.
 */

/*
 * tmpfs vnode interface for special devices.
 */

#include <sys/param.h>
#include <sys/vnode.h>
#include <sys/specdev.h>
#include <tmpfs/tmpfs_vnops.h>

#include <tmpfs/tmpfs.h>

int     tmpfs_spec_read         (void *);
int     tmpfs_spec_write        (void *);

/*
 * vnode operations vector used for special devices stored in a tmpfs
 * file system.
 */

const struct vops tmpfs_specvops = {
        .vop_close      = spec_close,
        .vop_access     = tmpfs_access,
        .vop_getattr    = tmpfs_getattr,
        .vop_setattr    = tmpfs_setattr,
        .vop_read       = tmpfs_spec_read,
        .vop_write      = tmpfs_spec_write,
        .vop_fsync      = spec_fsync,
        .vop_inactive   = tmpfs_inactive,
        .vop_reclaim    = tmpfs_reclaim,
        .vop_lock       = tmpfs_lock,
        .vop_unlock     = tmpfs_unlock,
        .vop_print      = tmpfs_print,
        .vop_islocked   = tmpfs_islocked,

        /* keep in sync with spec_vops */
        .vop_lookup     = vop_generic_lookup,
        .vop_create     = vop_generic_badop,
        .vop_mknod      = vop_generic_badop,
        .vop_open       = spec_open,
        .vop_ioctl      = spec_ioctl,
        .vop_kqfilter   = spec_kqfilter,
        .vop_revoke     = vop_generic_revoke,
        .vop_remove     = vop_generic_badop,
        .vop_link       = vop_generic_badop,
        .vop_rename     = vop_generic_badop,
        .vop_mkdir      = vop_generic_badop,
        .vop_rmdir      = vop_generic_badop,
        .vop_symlink    = vop_generic_badop,
        .vop_readdir    = vop_generic_badop,
        .vop_readlink   = vop_generic_badop,
        .vop_abortop    = vop_generic_badop,
        .vop_bmap       = vop_generic_bmap,
        .vop_strategy   = spec_strategy,
        .vop_pathconf   = spec_pathconf,
        .vop_advlock    = spec_advlock,
        .vop_bwrite     = vop_generic_bwrite,
};

int
tmpfs_spec_read(void *v)
{
        struct vop_read_args /* {
                struct vnode *a_vp;
                struct uio *a_uio;
                int a_ioflag;
                kauth_cred_t a_cred;
        } */ *ap = v;
        struct vnode *vp = ap->a_vp;

        tmpfs_update(VP_TO_TMPFS_NODE(vp), TMPFS_NODE_ACCESSED);
        return (spec_read(ap));
}

int
tmpfs_spec_write(void *v)
{
        struct vop_write_args /* {
                struct vnode *a_vp;
                struct uio *a_uio;
                int a_ioflag;
                kauth_cred_t a_cred;
        } */ *ap = v;
        struct vnode *vp = ap->a_vp;

        tmpfs_update(VP_TO_TMPFS_NODE(vp), TMPFS_NODE_MODIFIED);
        return (spec_write(ap));
}