162 lines
4.1 KiB
C
162 lines
4.1 KiB
C
/* $NetBSD: specfs.c,v 1.1 2007/08/05 22:28:09 pooka Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2007 Antti Kantee. All Rights Reserved.
|
|
*
|
|
* Development of this software was supported by Google Summer of Code.
|
|
*
|
|
* 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 AUTHOR ``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 AUTHOR 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/param.h>
|
|
#include <sys/types.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/vnode_if.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/disklabel.h>
|
|
|
|
#include <uvm/uvm_extern.h>
|
|
|
|
#include "rump.h"
|
|
#include "rumpuser.h"
|
|
|
|
/* We have special special ops */
|
|
static int rump_specopen(void *);
|
|
static int rump_specioctl(void *);
|
|
static int rump_specclose(void *);
|
|
static int rump_specfsync(void *);
|
|
static int rump_specstrategy(void *);
|
|
|
|
int (**spec_vnodeop_p)(void *);
|
|
const struct vnodeopv_entry_desc rumpspec_vnodeop_entries[] = {
|
|
{ &vop_default_desc, vn_default_error },
|
|
{ &vop_open_desc, rump_specopen }, /* open */
|
|
{ &vop_close_desc, rump_specclose }, /* close */
|
|
{ &vop_ioctl_desc, rump_specioctl }, /* ioctl */
|
|
{ &vop_fsync_desc, rump_specfsync }, /* fsync */
|
|
{ &vop_strategy_desc, rump_specstrategy }, /* strategy */
|
|
{ NULL, NULL }
|
|
};
|
|
const struct vnodeopv_desc spec_vnodeop_opv_desc =
|
|
{ &spec_vnodeop_p, rumpspec_vnodeop_entries };
|
|
|
|
static int
|
|
rump_specopen(void *v)
|
|
{
|
|
struct vop_open_args /* {
|
|
struct vnode *a_vp;
|
|
int a_mode;
|
|
kauth_cred_t a_cred;
|
|
struct lwp *a_l;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct rump_specpriv *sp = vp->v_data;
|
|
int fd, error;
|
|
|
|
fd = rumpuser_open(sp->rsp_path, OFLAGS(ap->a_mode), &error);
|
|
if (fd == -1)
|
|
return error;
|
|
|
|
sp->rsp_fd = fd;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rump_specioctl(void *v)
|
|
{
|
|
struct vop_ioctl_args /* {
|
|
struct vnode *a_vp;
|
|
u_long a_command;
|
|
void *a_data;
|
|
int a_fflag;
|
|
kauth_cred_t a_cred;
|
|
struct lwp *a_l;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct rump_specpriv *sp = vp->v_data;
|
|
int rv, error;
|
|
|
|
if (ap->a_command == DIOCGPART)
|
|
return EOPNOTSUPP;
|
|
|
|
rv = rumpuser_ioctl(sp->rsp_fd, ap->a_command, ap->a_data, &error);
|
|
if (rv == -1)
|
|
return error;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rump_specclose(void *v)
|
|
{
|
|
struct vop_close_args /* {
|
|
struct vnode *a_vp;
|
|
int a_fflag;
|
|
kauth_cred_t a_cred;
|
|
struct lwp *a_l;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct rump_specpriv *sp = vp->v_data;
|
|
|
|
rumpuser_close(sp->rsp_fd);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rump_specfsync(void *v)
|
|
{
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rump_specstrategy(void *v)
|
|
{
|
|
struct vop_strategy_args /* {
|
|
struct vnode *a_vp;
|
|
struct buf *a_bp;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct buf *bp = ap->a_bp;
|
|
struct rump_specpriv *sp;
|
|
ssize_t rv;
|
|
int error;
|
|
|
|
assert(vp->v_type == VBLK);
|
|
sp = vp->v_data;
|
|
|
|
if (bp->b_flags & B_READ)
|
|
rv = rumpuser_pread(sp->rsp_fd, bp->b_data, bp->b_bcount,
|
|
bp->b_blkno << DEV_BSHIFT, &error);
|
|
else
|
|
rv = rumpuser_pwrite(sp->rsp_fd, bp->b_data, bp->b_bcount,
|
|
bp->b_blkno << DEV_BSHIFT, &error);
|
|
|
|
bp->b_error = 0;
|
|
if (rv == -1)
|
|
bp->b_error = error;
|
|
else
|
|
bp->b_resid = bp->b_bcount - rv;
|
|
|
|
return error;
|
|
}
|