int
layerfs_fhtovp(struct mount *mp, struct fid *fidp, struct vnode **vpp)
{
struct vnode *vp;
int error;
error = VFS_FHTOVP(MOUNTTOLAYERMOUNT(mp)->layerm_vfs, fidp, &vp);
if (error) {
*vpp = NULL;
return error;
}
VOP_UNLOCK(vp);
error = layer_node_create(mp, vp, vpp);
if (error) {
vput(vp);
*vpp = NULL;
return (error);
}
error = vn_lock(*vpp, LK_EXCLUSIVE);
if (error) {
vrele(*vpp);
*vpp = NULL;
return error;
}
return 0;
}
/*
* fhstat_args(struct fhandle *u_fhp, struct dfbsd12_stat *sb)
*
* MPALMOSTSAFE
*/
int
sys_dfbsd12_fhstat(struct dfbsd12_fhstat_args *uap)
{
struct thread *td = curthread;
struct dfbsd12_stat osb;
struct stat sb;
fhandle_t fh;
struct mount *mp;
struct vnode *vp;
int error;
/*
* Must be super user
*/
error = priv_check(td, PRIV_ROOT);
if (error)
return (error);
error = copyin(uap->u_fhp, &fh, sizeof(fhandle_t));
if (error)
return (error);
get_mplock();
if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL) {
error = ESTALE;
goto done;
}
if ((error = VFS_FHTOVP(mp, NULL, &fh.fh_fid, &vp)))
goto done;
error = vn_stat(vp, &sb, td->td_ucred);
vput(vp);
if (error)
goto done;
cvtstat(&osb, &sb);
error = copyout(&osb, uap->sb, sizeof(osb));
done:
rel_mplock();
return (error);
}
int
compat_30_netbsd32_fhstat(struct lwp *l, const struct compat_30_netbsd32_fhstat_args *uap, register_t *retval)
{
/* {
syscallarg(const netbsd32_fhandlep_t) fhp;
syscallarg(netbsd32_stat13p_t) sb;
} */
struct stat sb;
struct netbsd32_stat13 sb32;
int error;
struct compat_30_fhandle fh;
struct mount *mp;
struct vnode *vp;
/*
* Must be super user
*/
if ((error = kauth_authorize_system(l->l_cred,
KAUTH_SYSTEM_FILEHANDLE, 0, NULL, NULL, NULL)))
return (error);
if ((error = copyin(SCARG_P32(uap, fhp), &fh, sizeof(fh))) != 0)
return (error);
if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL)
return (ESTALE);
if (mp->mnt_op->vfs_fhtovp == NULL)
return EOPNOTSUPP;
if ((error = VFS_FHTOVP(mp, (struct fid*)&fh.fh_fid, &vp)))
return (error);
error = vn_stat(vp, &sb);
vput(vp);
if (error)
return (error);
netbsd32_from___stat13(&sb, &sb32);
error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb));
return (error);
}
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;
}
