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/* $OpenBSD: xfs_vfsops-bsd.c,v 1.4 2000/03/03 00:54:59 todd Exp $ */
/*
* Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the Kungliga Tekniska
* Högskolan and its contributors.
*
* 4. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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 <xfs/xfs_locl.h>
RCSID("$OpenBSD: xfs_vfsops-bsd.c,v 1.4 2000/03/03 00:54:59 todd Exp $");
/*
* XFS vfs operations.
*/
#include <xfs/xfs_common.h>
#include <xfs/xfs_message.h>
#include <xfs/xfs_fs.h>
#include <xfs/xfs_dev.h>
#include <xfs/xfs_deb.h>
#include <xfs/xfs_vfsops.h>
#include <xfs/xfs_vfsops-bsd.h>
#include <xfs/xfs_vnodeops.h>
int
xfs_mount(struct mount *mp,
const char *user_path,
caddr_t user_data,
struct nameidata *ndp,
struct proc *p)
{
return xfs_mount_common(mp, user_path, user_data, ndp, p);
}
int
xfs_start(struct mount * mp, int flags, struct proc * p)
{
XFSDEB(XDEBVFOPS, ("xfs_start mp = %p, flags = %d, proc = %p\n",
mp, flags, p));
return 0;
}
int
xfs_unmount(struct mount * mp, int mntflags, struct proc *p)
{
XFSDEB(XDEBVFOPS, ("xfs_umount: mp = %p, mntflags = %d, proc = %p\n",
mp, mntflags, p));
return xfs_unmount_common(mp, mntflags);
}
int
xfs_root(struct mount *mp, struct vnode **vpp)
{
XFSDEB(XDEBVFOPS, ("xfs_root mp = %p\n", mp));
return xfs_root_common(mp, vpp, curproc, curproc->p_ucred);
}
int
xfs_quotactl(struct mount *mp, int cmd, uid_t uid, caddr_t arg, struct proc *p)
{
XFSDEB(XDEBVFOPS, ("xfs_quotactl: mp = %p, cmd = %d, uid = %u, "
"arg = %p, proc = %p\n",
mp, cmd, uid, arg, p));
return EOPNOTSUPP;
}
int
xfs_statfs(struct mount *mp, struct statfs *sbp, struct proc *p)
{
XFSDEB(XDEBVFOPS, ("xfs_statfs: mp = %p, sbp = %p, proc = %p\n",
mp, sbp, p));
bcopy(&mp->mnt_stat, sbp, sizeof(*sbp));
return 0;
}
int
xfs_sync(struct mount *mp, int waitfor, struct ucred *cred, struct proc *p)
{
XFSDEB(XDEBVFOPS, ("xfs_sync: mp = %p, waitfor = %d, "
"cred = %p, proc = %p\n",
mp, waitfor, cred, p));
return 0;
}
int
xfs_vget(struct mount * mp,
ino_t ino,
struct vnode ** vpp)
{
XFSDEB(XDEBVFOPS, ("xfs_vget\n"));
return EOPNOTSUPP;
}
int
xfs_fhtovp(struct mount * mp,
struct fid * fhp,
struct vnode ** vpp)
{
#ifdef ARLA_KNFS
static struct ucred fhtovpcred;
struct netcred *np = NULL;
struct xfs_node *xn;
struct vnode *vp;
xfs_handle handle;
int error;
XFSDEB(XDEBVFOPS, ("xfs_fhtovp\n"));
if (fhp->fid_len != 16) {
printf("xfs_fhtovp: *PANIC* got a invalid length of a fid\n");
return EINVAL;
}
/* XXX: Should see if we is exported to this client */
#if 0
np = vfs_export_lookup(mp, &ump->um_export, nam);
if (np == NULL)
return EACCES;
#endif
memcpy(&handle, fhp->fid_data, sizeof(handle));
XFSDEB(XDEBVFOPS, ("xfs_fhtovp: fid: %d.%d.%d.%d\n",
handle.a, handle.d, handle.c, handle.d));
XFSDEB(XDEBVFOPS, ("xfs_fhtovp: xfs_vnode_find\n"));
xn = xfs_node_find(&xfs[0], &handle); /* XXX: 0 */
if (xn == NULL) {
struct xfs_message_getattr msg;
error = xfs_getnewvnode(xfs[0].mp, &vp, &handle);
if (error)
return error;
xfs_do_vget(vp, 0, current);
} else {
/* XXX access ? */
vp = XNODE_TO_VNODE(xn);
/* XXX wrong ? (we tell arla below) */
if (vp->v_usecount <= 0)
xfs_do_vget(vp, 0, current);
else
VREF(vp);
error = 0;
}
if (error == 0) {
fhtovpcred.cr_uid = 0;
fhtovpcred.cr_gid = 0;
fhtovpcred.cr_ngroups = 0;
*vpp = vp;
XFSDEB(XDEBVFOPS, ("xfs_fhtovp done\n"));
/*
* XXX tell arla about this node is hold by nfsd.
* There need to be code in xfs_write too.
*/
} else
XFSDEB(XDEBVFOPS, ("xfs_fhtovp failed (%d);", error));
return error;
#else
return EOPNOTSUPP;
#endif
}
int
xfs_vptofh(struct vnode * vp,
struct fid * fhp)
{
#ifdef ARLA_KNFS
struct xfs_node *xn;
XFSDEB(XDEBVFOPS, ("xfs_vptofh\n"));
if (MAXFIDSZ < 16)
return EOPNOTSUPP;
xn = VNODE_TO_XNODE(vp);
if (xn == NULL)
return EINVAL;
fhp->fid_len = 16;
memcpy(fhp->fid_data, &xn->handle, 16);
return 0;
#else
XFSDEB(XDEBVFOPS, ("xfs_vptofh\n"));
return EOPNOTSUPP;
#endif
}
/*
* xfs complete dead vnodes implementation.
*
* this is because the dead_vnodeops_p is _not_ filesystem, but rather
* a part of the vfs-layer.
*/
int
xfs_dead_lookup(struct vop_lookup_args * ap)
/* struct vop_lookup_args {
struct vnodeop_desc *a_desc;
struct vnode *a_dvp;
struct vnode **a_vpp;
struct componentname *a_cnp;
}; */
{
*ap->a_vpp = NULL;
return ENOTDIR;
}
/*
* Given `fsid', `fileid', and `gen', return in `vpp' a locked and
* ref'ed vnode from that file system with that id and generation.
* All is done in the context of `proc'. Returns 0 if succesful, and
* error otherwise.
*/
int
xfs_fhlookup (struct proc *proc,
fsid_t fsid,
long fileid,
long gen,
struct vnode **vpp)
{
int error;
struct mount *mp;
struct ucred *cred = proc->p_ucred;
struct vattr vattr;
XFSDEB(XDEBVFOPS, ("xfs_fhlookup: fileid = %ld\n",
fileid));
error = suser (cred, NULL);
if (error)
return EPERM;
#ifdef HAVE_KERNEL_VFS_GETVFS
mp = vfs_getvfs (&fsid);
#else
mp = getvfs (&fsid);
#endif
if (mp == NULL)
return ENXIO;
error = VFS_VGET(mp, fileid, vpp);
if (error)
return error;
error = VOP_GETATTR(*vpp, &vattr, cred, proc);
if (error) {
vput(*vpp);
return error;
}
if (vattr.va_gen != gen) {
vput(*vpp);
return ENOENT;
}
#ifdef HAVE_KERNEL_VFS_OBJECT_CREATE
if ((*vpp)->v_type == VREG && (*vpp)->v_object == NULL)
#if HAVE_FOUR_ARGUMENT_VFS_OBJECT_CREATE
vfs_object_create (*vpp, proc, proc->p_ucred, TRUE);
#else
vfs_object_create (*vpp, proc, proc->p_ucred);
#endif
#endif
return 0;
}
/*
* Perform an open operation on the vnode identified by (fsid, fileid,
* gen) (see xfs_fhlookup) with flags `user_flags'. Returns 0 or
* error. If succsesful, the file descriptor is returned in `retval'.
*/
int
xfs_fhopen (struct proc *proc,
fsid_t fsid,
long fileid,
long gen,
int user_flags,
register_t *retval)
{
int error;
struct vnode *vp;
struct ucred *cred = proc->p_ucred;
int flags = FFLAGS(user_flags);
int index;
struct file *fp;
XFSDEB(XDEBVFOPS, ("xfs_fhopen: fileid = %ld, flags = %d\n",
fileid, user_flags));
error = xfs_fhlookup (proc, fsid, fileid, gen, &vp);
if (error)
return error;
error = VOP_OPEN(vp, flags, cred, proc);
if (error)
goto out;
error = falloc(proc, &fp, &index);
if (error)
goto out;
if (flags & FWRITE)
vp->v_writecount++;
#if __FreeBSD_version >= 300000
if (vp->v_type == VREG) {
#if HAVE_FOUR_ARGUMENT_VFS_OBJECT_CREATE
error = vfs_object_create(vp, proc, proc->p_cred->pc_ucred, 1);
#else
error = vfs_object_create(vp, proc, proc->p_cred->pc_ucred);
#endif
if (error)
goto out;
}
#endif
fp->f_flag = flags & FMASK;
fp->f_type = DTYPE_VNODE;
fp->f_ops = &vnops;
fp->f_data = (caddr_t)vp;
xfs_vfs_unlock(vp, proc);
*retval = index;
return 0;
out:
vput(vp);
return error;
}
|