- if (!fhp->fh_dentry) {
- struct fid *fid = NULL, sfid;
- int fileid_type;
- int data_left = fh->fh_size/4;
-
- error = nfserr_stale;
- if (rqstp->rq_vers > 2)
- error = nfserr_badhandle;
- if (rqstp->rq_vers == 4 && fh->fh_size == 0)
- return nfserr_nofilehandle;
-
- if (fh->fh_version == 1) {
- int len;
- if (--data_left<0) goto out;
- switch (fh->fh_auth_type) {
- case 0: break;
- default: goto out;
- }
- len = key_len(fh->fh_fsid_type) / 4;
- if (len == 0) goto out;
- if (fh->fh_fsid_type == FSID_MAJOR_MINOR) {
- /* deprecated, convert to type 3 */
- len = key_len(FSID_ENCODE_DEV)/4;
- fh->fh_fsid_type = FSID_ENCODE_DEV;
- fh->fh_fsid[0] = new_encode_dev(MKDEV(ntohl(fh->fh_fsid[0]), ntohl(fh->fh_fsid[1])));
- fh->fh_fsid[1] = fh->fh_fsid[2];
- }
- if ((data_left -= len)<0) goto out;
- exp = rqst_exp_find(rqstp, fh->fh_fsid_type,
- fh->fh_auth);
- fid = (struct fid *)(fh->fh_auth + len);
- } else {
- __u32 tfh[2];
- dev_t xdev;
- ino_t xino;
- if (fh->fh_size != NFS_FHSIZE)
- goto out;
- /* assume old filehandle format */
- xdev = old_decode_dev(fh->ofh_xdev);
- xino = u32_to_ino_t(fh->ofh_xino);
- mk_fsid(FSID_DEV, tfh, xdev, xino, 0, NULL);
- exp = rqst_exp_find(rqstp, FSID_DEV, tfh);
- }
-
- error = nfserr_stale;
- if (PTR_ERR(exp) == -ENOENT)
- goto out;