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/*
* Copyright (c) 1995 - 2002 Kungliga Tekniska H�gskolan
* (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. 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("$arla: xfs_vfsops-bsd.c,v 1.72 2002/12/19 10:30:17 lha Exp $");
/*
* NNPFS 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_caddr(struct mount *mp,
const char *user_path,
caddr_t user_data,
struct nameidata *ndp,
d_thread_t *p)
{
return xfs_mount_common(mp, user_path, user_data, ndp, p);
}
int
xfs_start(struct mount * mp, int flags, d_thread_t * p)
{
NNPFSDEB(XDEBVFOPS, ("xfs_start mp = %lx, flags = %d, proc = %lx\n",
(unsigned long)mp, flags, (unsigned long)p));
return 0;
}
int
xfs_unmount(struct mount * mp, int mntflags, d_thread_t *p)
{
NNPFSDEB(XDEBVFOPS, ("xfs_umount: mp = %lx, mntflags = %d, proc = %lx\n",
(unsigned long)mp, mntflags, (unsigned long)p));
return xfs_unmount_common(mp, mntflags);
}
int
xfs_root(struct mount *mp, struct vnode **vpp)
{
NNPFSDEB(XDEBVFOPS, ("xfs_root mp = %lx\n", (unsigned long)mp));
#ifdef HAVE_FREEBSD_THREAD
return xfs_root_common(mp, vpp, xfs_curthread(), xfs_curthread()->td_proc->p_ucred);
#else
return xfs_root_common(mp, vpp, xfs_curproc(), xfs_curproc()->p_ucred);
#endif
}
int
xfs_quotactl(struct mount *mp, int cmd, uid_t uid, caddr_t arg, d_thread_t *p)
{
NNPFSDEB(XDEBVFOPS, ("xfs_quotactl: mp = %lx, cmd = %d, uid = %u, "
"arg = %lx, proc = %lx\n",
(unsigned long)mp, cmd, uid,
(unsigned long)arg, (unsigned long)p));
return EOPNOTSUPP;
}
int
xfs_statfs(struct mount *mp, struct statfs *sbp, d_thread_t *p)
{
NNPFSDEB(XDEBVFOPS, ("xfs_statfs: mp = %lx, sbp = %lx, proc = %lx\n",
(unsigned long)mp,
(unsigned long)sbp,
(unsigned long)p));
bcopy(&mp->mnt_stat, sbp, sizeof(*sbp));
return 0;
}
int
xfs_sync(struct mount *mp, int waitfor, struct ucred *cred, d_thread_t *p)
{
NNPFSDEB(XDEBVFOPS, ("xfs_sync: mp = %lx, waitfor = %d, "
"cred = %lx, proc = %lx\n",
(unsigned long)mp,
waitfor,
(unsigned long)cred,
(unsigned long)p));
return 0;
}
int
xfs_vget(struct mount * mp,
#ifdef __APPLE__
void *ino,
#else
ino_t ino,
#endif
struct vnode ** vpp)
{
NNPFSDEB(XDEBVFOPS, ("xfs_vget\n"));
return EOPNOTSUPP;
}
static int
common_fhtovp(struct mount * mp,
struct fid * fhp,
struct vnode ** vpp)
{
#ifdef ARLA_KNFS
struct netcred *np = NULL;
struct xfs_node *xn;
struct vnode *vp;
xfs_handle handle;
int error;
NNPFSDEB(XDEBVFOPS, ("xfs_fhtovp\n"));
if (fhp->fid_len != 16) {
printf("xfs_fhtovp: *PANIC* got a invalid length of a fid\n");
return EINVAL;
}
memcpy(&handle, fhp->fid_data, sizeof(handle));
NNPFSDEB(XDEBVFOPS, ("xfs_fhtovp: fid: %d.%d.%d.%d\n",
handle.a, handle.d, handle.c, handle.d));
NNPFSDEB(XDEBVFOPS, ("xfs_fhtovp: xfs_vnode_find\n"));
xn = xfs_node_find(&xfs[0].nodehead, &handle);
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, curproc);
} else {
/* XXX access ? */
vp = XNODE_TO_VNODE(xn);
/* XXX wrong ? (we tell arla below) */
if (vp->v_usecount <= 0)
xfs_do_vget(vp, 0, curproc);
else
VREF(vp);
error = 0;
}
*vpp = vp;
if (error == 0) {
NNPFSDEB(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
NNPFSDEB(XDEBVFOPS, ("xfs_fhtovp failed (%d)\n", error));
return error;
#else /* !ARLA_KNFS */
return EOPNOTSUPP;
#endif /* !ARLA_KNFS */
}
/* new style fhtovp */
#ifdef HAVE_STRUCT_VFSOPS_VFS_CHECKEXP
int
xfs_fhtovp(struct mount * mp,
struct fid * fhp,
struct vnode ** vpp)
{
return common_fhtovp (mp, fhp, vpp);
}
#else /* !HAVE_STRUCT_VFSOPS_VFS_CHECKEXP */
/* old style fhtovp */
int
xfs_fhtovp(struct mount * mp,
struct fid * fhp,
struct mbuf * nam,
struct vnode ** vpp,
int *exflagsp,
struct ucred ** credanonp)
{
static struct ucred fhtovpcred;
int error;
/* 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
error = common_fhtovp(mp, fhp, vpp);
if (error == 0) {
fhtovpcred.cr_uid = 0;
fhtovpcred.cr_gid = 0;
fhtovpcred.cr_ngroups = 0;
#ifdef MNT_EXPUBLIC
*exflagsp = MNT_EXPUBLIC;
#else
*exflagsp = 0;
#endif
*credanonp = &fhtovpcred;
}
return error;
}
#endif /* !HAVE_STRUCT_VFSOPS_VFS_CHECKEXP */
int
xfs_checkexp (struct mount *mp,
#ifdef __FreeBSD__
struct sockaddr *nam,
#else
struct mbuf *nam,
#endif
int *exflagsp,
struct ucred **credanonp)
{
NNPFSDEB(XDEBVFOPS, ("xfs_checkexp\n"));
#if 0
np = vfs_export_lookup(mp, &ump->um_export, nam);
if (np == NULL)
return EACCES;
#endif
return 0;
}
int
xfs_vptofh(struct vnode * vp,
struct fid * fhp)
{
#ifdef ARLA_KNFS
struct xfs_node *xn;
NNPFSDEB(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
NNPFSDEB(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 successful, and
* error otherwise.
*/
int
xfs_fhlookup (d_thread_t *proc,
struct xfs_fhandle_t *fhp,
struct vnode **vpp)
{
int error;
struct mount *mp;
#if !(defined(HAVE_GETFH) && defined(HAVE_FHOPEN))
struct ucred *cred = proc->p_ucred;
struct vattr vattr;
fsid_t fsid;
struct xfs_fh_args *fh_args = (struct xfs_fh_args *)fhp->fhdata;
NNPFSDEB(XDEBVFOPS, ("xfs_fhlookup (xfs)\n"));
error = xfs_suser (proc);
if (error)
return EPERM;
if (fhp->len < sizeof(struct xfs_fh_args))
return EINVAL;
fsid = SCARG(fh_args, fsid);
mp = xfs_vfs_getvfs (&fsid);
if (mp == NULL)
return ENXIO;
#ifdef __APPLE__
{
uint32_t ino = SCARG(fh_args, fileid);
error = VFS_VGET(mp, &ino, vpp);
}
#else
error = VFS_VGET(mp, SCARG(fh_args, fileid), vpp);
#endif
if (error)
return error;
if (*vpp == NULL)
return ENOENT;
error = VOP_GETATTR(*vpp, &vattr, cred, proc);
if (error) {
vput(*vpp);
return error;
}
if (vattr.va_gen != SCARG(fh_args, gen)) {
vput(*vpp);
return ENOENT;
}
#else /* HAVE_GETFH && HAVE_FHOPEN */
{
fhandle_t *fh = (fhandle_t *) fhp;
NNPFSDEB(XDEBVFOPS, ("xfs_fhlookup (native)\n"));
mp = xfs_vfs_getvfs (&fh->fh_fsid);
if (mp == NULL)
return ESTALE;
if ((error = VFS_FHTOVP(mp, &fh->fh_fid, vpp)) != 0) {
*vpp = NULL;
return error;
}
}
#endif /* HAVE_GETFH && HAVE_FHOPEN */
#ifdef HAVE_KERNEL_VFS_OBJECT_CREATE
if ((*vpp)->v_type == VREG && (*vpp)->v_object == NULL)
#ifdef HAVE_FREEBSD_THREAD
xfs_vfs_object_create (*vpp, proc, proc->td_proc->p_ucred);
#else
xfs_vfs_object_create (*vpp, proc, proc->p_ucred);
#endif
#elif __APPLE__
if ((*vpp)->v_type == VREG && (!UBCINFOEXISTS(*vpp))) {
ubc_info_init(*vpp);
}
ubc_hold(*vpp);
#endif
return 0;
}
/*
* Perform an open operation on the vnode identified by a `xfs_fhandle_t'
* (see xfs_fhlookup) with flags `user_flags'. Returns 0 or
* error. If successful, the file descriptor is returned in `retval'.
*/
extern struct fileops vnops; /* sometimes declared in <file.h> */
int
xfs_fhopen (d_thread_t *proc,
struct xfs_fhandle_t *fhp,
int user_flags,
register_t *retval)
{
int error;
struct vnode *vp;
#ifdef HAVE_FREEBSD_THREAD
struct ucred *cred = proc->td_proc->p_ucred;
#else
struct ucred *cred = proc->p_ucred;
#endif
int flags = FFLAGS(user_flags);
int index;
struct file *fp;
int mode;
struct xfs_fhandle_t fh;
NNPFSDEB(XDEBVFOPS, ("xfs_fhopen: flags = %d\n", user_flags));
error = copyin (fhp, &fh, sizeof(fh));
if (error)
return error;
error = xfs_fhlookup (proc, &fh, &vp);
NNPFSDEB(XDEBVFOPS, ("xfs_fhlookup returned %d\n", error));
if (error)
return error;
switch (vp->v_type) {
case VDIR :
case VREG :
break;
case VLNK :
error = EMLINK;
goto out;
default :
error = EOPNOTSUPP;
goto out;
}
mode = 0;
if (flags & FWRITE) {
switch (vp->v_type) {
case VREG :
break;
case VDIR :
error = EISDIR;
goto out;
default :
error = EOPNOTSUPP;
goto out;
}
error = vn_writechk (vp);
if (error)
goto out;
mode |= VWRITE;
}
if (flags & FREAD)
mode |= VREAD;
if (mode) {
error = VOP_ACCESS(vp, mode, cred, proc);
if (error)
goto out;
}
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 defined(__FreeBSD_version) && __FreeBSD_version >= 300000
if (vp->v_type == VREG) {
#ifdef HAVE_FREEBSD_THREAD
error = xfs_vfs_object_create(vp, proc, proc->td_proc->p_ucred);
#else
error = xfs_vfs_object_create(vp, proc, proc->p_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;
#ifdef FILE_UNUSE
FILE_UNUSE(fp, proc);
#endif
#ifdef __APPLE__
*fdflags(proc, index) &= ~UF_RESERVED;
#endif
return 0;
out:
NNPFSDEB(XDEBVFOPS, ("xfs_fhopen: error = %d\n", error));
vput(vp);
return error;
}
|