28 	struct svc_export *exp = expv;  in nfsd_acceptable()  local
33 	if (exp->ex_flags & NFSEXP_NOSUBTREECHECK)  in nfsd_acceptable()
37 	while (tdentry != exp->ex_path.dentry && !IS_ROOT(tdentry)) {  in nfsd_acceptable()
49 	if (tdentry != exp->ex_path.dentry)  in nfsd_acceptable()
51 	rv = (tdentry == exp->ex_path.dentry);  in nfsd_acceptable()
84 					  struct svc_export *exp)  in nfsd_setuser_and_check_port()  argument
86 	int flags = nfsexp_flags(rqstp, exp);  in nfsd_setuser_and_check_port()
97 	return nfserrno(nfsd_setuser(rqstp, exp));  in nfsd_setuser_and_check_port()
101 	struct dentry *dentry, struct svc_export *exp)  in check_pseudo_root()  argument
103 	if (!(exp->ex_flags & NFSEXP_V4ROOT))  in check_pseudo_root()
125 	if (unlikely(dentry != exp->ex_path.dentry))  in check_pseudo_root()
139 	struct svc_export *exp;  in nfsd_set_fh_dentry()  local
178 		exp = rqst_exp_find(rqstp, fh->fh_fsid_type, fh->fh_fsid);  in nfsd_set_fh_dentry()
191 		exp = rqst_exp_find(rqstp, FSID_DEV, tfh);  in nfsd_set_fh_dentry()
195 	if (PTR_ERR(exp) == -ENOENT)  in nfsd_set_fh_dentry()
198 	if (IS_ERR(exp))  in nfsd_set_fh_dentry()
199 		return nfserrno(PTR_ERR(exp));  in nfsd_set_fh_dentry()
201 	if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) {  in nfsd_set_fh_dentry()
222 		error = nfsd_setuser_and_check_port(rqstp, exp);  in nfsd_set_fh_dentry()
248 		dentry = dget(exp->ex_path.dentry);  in nfsd_set_fh_dentry()
250 		dentry = exportfs_decode_fh(exp->ex_path.mnt, fid,  in nfsd_set_fh_dentry()
252 				nfsd_acceptable, exp);  in nfsd_set_fh_dentry()
269 	fhp->fh_export = exp;  in nfsd_set_fh_dentry()
272 	exp_put(exp);  in nfsd_set_fh_dentry()
306 	struct svc_export *exp;  in fh_verify()  local
318 	exp = fhp->fh_export;  in fh_verify()
335 	error = check_pseudo_root(rqstp, dentry, exp);  in fh_verify()
339 	error = nfsd_setuser_and_check_port(rqstp, exp);  in fh_verify()
360 			&& exp->ex_path.dentry == dentry)  in fh_verify()
363 	error = check_nfsd_access(exp, rqstp);  in fh_verify()
369 	error = nfsd_permission(rqstp, exp, dentry, access);  in fh_verify()
391 static void _fh_update(struct svc_fh *fhp, struct svc_export *exp,  in _fh_update()  argument
394 	if (dentry != exp->ex_path.dentry) {  in _fh_update()
398 		int subtreecheck = !(exp->ex_flags & NFSEXP_NOSUBTREECHECK);  in _fh_update()
412 				  struct svc_export *exp,  in _fh_update_old()  argument
418 	    (exp->ex_flags & NFSEXP_NOSUBTREECHECK))  in _fh_update_old()
422 static bool is_root_export(struct svc_export *exp)  in is_root_export()  argument
424 	return exp->ex_path.dentry == exp->ex_path.dentry->d_sb->s_root;  in is_root_export()
427 static struct super_block *exp_sb(struct svc_export *exp)  in exp_sb()  argument
429 	return d_inode(exp->ex_path.dentry)->i_sb;  in exp_sb()
432 static bool fsid_type_ok_for_exp(u8 fsid_type, struct svc_export *exp)  in fsid_type_ok_for_exp()  argument
436 		if (!old_valid_dev(exp_sb(exp)->s_dev))  in fsid_type_ok_for_exp()
441 		return exp_sb(exp)->s_type->fs_flags & FS_REQUIRES_DEV;  in fsid_type_ok_for_exp()
443 		return exp->ex_flags & NFSEXP_FSID;  in fsid_type_ok_for_exp()
446 		if (!is_root_export(exp))  in fsid_type_ok_for_exp()
451 		return exp->ex_uuid != NULL;  in fsid_type_ok_for_exp()
457 static void set_version_and_fsid_type(struct svc_fh *fhp, struct svc_export *exp, struct svc_fh *re…  in set_version_and_fsid_type()  argument
463 	if (ref_fh && ref_fh->fh_export == exp) {  in set_version_and_fsid_type()
485 		if (!fsid_type_ok_for_exp(fsid_type, exp))  in set_version_and_fsid_type()
487 	} else if (exp->ex_flags & NFSEXP_FSID) {  in set_version_and_fsid_type()
489 	} else if (exp->ex_uuid) {  in set_version_and_fsid_type()
491 			if (is_root_export(exp))  in set_version_and_fsid_type()
496 			if (is_root_export(exp))  in set_version_and_fsid_type()
501 	} else if (!old_valid_dev(exp_sb(exp)->s_dev))  in set_version_and_fsid_type()
512 fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry,  in fh_compose()  argument
524 	dev_t ex_dev = exp_sb(exp)->s_dev;  in fh_compose()
528 		(long) d_inode(exp->ex_path.dentry)->i_ino,  in fh_compose()
536 	 set_version_and_fsid_type(fhp, exp, ref_fh);  in fh_compose()
551 	fhp->fh_export = exp_get(exp);  in fh_compose()
561 			ino_t_to_u32(d_inode(exp->ex_path.dentry)->i_ino);  in fh_compose()
564 			_fh_update_old(dentry, exp, &fhp->fh_handle);  in fh_compose()
573 			d_inode(exp->ex_path.dentry)->i_ino,  in fh_compose()
574 			exp->ex_fsid, exp->ex_uuid);  in fh_compose()
577 			_fh_update(fhp, exp, dentry);  in fh_compose()
629 	struct svc_export * exp = fhp->fh_export;  in fh_put()  local
637 	if (exp) {  in fh_put()
638 		exp_put(exp);  in fh_put()