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/* $OpenBSD: tmpfs_specops.c,v 1.5 2015/01/21 22:26:52 deraadt 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_close (void *);
int tmpfs_spec_read (void *);
int tmpfs_spec_write (void *);
/*
* vnode operations vector used for special devices stored in a tmpfs
* file system.
*/
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 = spec_badop,
.vop_mknod = spec_badop,
.vop_open = spec_open,
.vop_ioctl = spec_ioctl,
.vop_poll = spec_poll,
.vop_kqfilter = spec_kqfilter,
.vop_revoke = vop_generic_revoke,
.vop_remove = spec_badop,
.vop_link = spec_badop,
.vop_rename = spec_badop,
.vop_mkdir = spec_badop,
.vop_rmdir = spec_badop,
.vop_symlink = spec_badop,
.vop_readdir = spec_badop,
.vop_readlink = spec_badop,
.vop_abortop = spec_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));
}
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