30 	struct svc_export *exp = expv;  in nfsd_acceptable()  local
35 	if (exp->ex_flags & NFSEXP_NOSUBTREECHECK)  in nfsd_acceptable()
39 	while (tdentry != exp->ex_path.dentry && !IS_ROOT(tdentry)) {  in nfsd_acceptable()
52 	if (tdentry != exp->ex_path.dentry)  in nfsd_acceptable()
54 	rv = (tdentry == exp->ex_path.dentry);  in nfsd_acceptable()
92 				     struct svc_export *exp)  in nfsd_originating_port_ok()  argument
94 	if (nfsexp_flags(cred, exp) & NFSEXP_INSECURE_PORT)  in nfsd_originating_port_ok()
104 					  struct svc_export *exp)  in nfsd_setuser_and_check_port()  argument
107 	if (rqstp && !nfsd_originating_port_ok(rqstp, cred, exp)) {  in nfsd_setuser_and_check_port()
115 	return nfserrno(nfsd_setuser(cred, exp));  in nfsd_setuser_and_check_port()
119 				       struct svc_export *exp)  in check_pseudo_root()  argument
121 	if (!(exp->ex_flags & NFSEXP_V4ROOT))  in check_pseudo_root()
135 	if (unlikely(dentry != exp->ex_path.dentry))  in check_pseudo_root()
153 	struct svc_export *exp;  in nfsd_set_fh_dentry()  local
191 	exp = rqst_exp_find(rqstp ? &rqstp->rq_chandle : NULL,  in nfsd_set_fh_dentry()
197 	if (IS_ERR(exp)) {  in nfsd_set_fh_dentry()
198 		trace_nfsd_set_fh_dentry_badexport(rqstp, fhp, PTR_ERR(exp));  in nfsd_set_fh_dentry()
200 		if (PTR_ERR(exp) == -ENOENT)  in nfsd_set_fh_dentry()
203 		return nfserrno(PTR_ERR(exp));  in nfsd_set_fh_dentry()
206 	if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) {  in nfsd_set_fh_dentry()
227 		error = nfsd_setuser_and_check_port(rqstp, cred, exp);  in nfsd_set_fh_dentry()
240 		dentry = dget(exp->ex_path.dentry);  in nfsd_set_fh_dentry()
242 		dentry = exportfs_decode_fh_raw(exp->ex_path.mnt, fid,  in nfsd_set_fh_dentry()
244 						nfsd_acceptable, exp);  in nfsd_set_fh_dentry()
272 	fhp->fh_export = exp;  in nfsd_set_fh_dentry()
284 		if (exp->ex_flags & NFSEXP_V4ROOT)  in nfsd_set_fh_dentry()
289 		if (EX_WGATHER(exp))  in nfsd_set_fh_dentry()
291 		if (exp->ex_flags & NFSEXP_V4ROOT)  in nfsd_set_fh_dentry()
297 	exp_put(exp);  in nfsd_set_fh_dentry()
322 	struct svc_export *exp = NULL;  in __fh_verify()  local
333 	exp = fhp->fh_export;  in __fh_verify()
353 	error = check_pseudo_root(dentry, exp);  in __fh_verify()
357 	error = nfsd_setuser_and_check_port(rqstp, cred, exp);  in __fh_verify()
378 			&& exp->ex_path.dentry == dentry)  in __fh_verify()
381 	error = check_nfsd_access(exp, rqstp);  in __fh_verify()
387 	error = nfsd_permission(cred, exp, dentry, access);  in __fh_verify()
391 		nfsd_stats_fh_stale_inc(nn, exp);  in __fh_verify()
460 static void _fh_update(struct svc_fh *fhp, struct svc_export *exp,  in _fh_update()  argument
463 	if (dentry != exp->ex_path.dentry) {  in _fh_update()
467 		int fh_flags = (exp->ex_flags & NFSEXP_NOSUBTREECHECK) ? 0 :  in _fh_update()
480 static bool is_root_export(struct svc_export *exp)  in is_root_export()  argument
482 	return exp->ex_path.dentry == exp->ex_path.dentry->d_sb->s_root;  in is_root_export()
485 static struct super_block *exp_sb(struct svc_export *exp)  in exp_sb()  argument
487 	return exp->ex_path.dentry->d_sb;  in exp_sb()
490 static bool fsid_type_ok_for_exp(u8 fsid_type, struct svc_export *exp)  in fsid_type_ok_for_exp()  argument
494 		if (!old_valid_dev(exp_sb(exp)->s_dev))  in fsid_type_ok_for_exp()
499 		return exp_sb(exp)->s_type->fs_flags & FS_REQUIRES_DEV;  in fsid_type_ok_for_exp()
501 		return exp->ex_flags & NFSEXP_FSID;  in fsid_type_ok_for_exp()
504 		if (!is_root_export(exp))  in fsid_type_ok_for_exp()
509 		return exp->ex_uuid != NULL;  in fsid_type_ok_for_exp()
515 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
521 	if (ref_fh && ref_fh->fh_export == exp) {  in set_version_and_fsid_type()
543 		if (!fsid_type_ok_for_exp(fsid_type, exp))  in set_version_and_fsid_type()
545 	} else if (exp->ex_flags & NFSEXP_FSID) {  in set_version_and_fsid_type()
547 	} else if (exp->ex_uuid) {  in set_version_and_fsid_type()
549 			if (is_root_export(exp))  in set_version_and_fsid_type()
554 			if (is_root_export(exp))  in set_version_and_fsid_type()
559 	} else if (!old_valid_dev(exp_sb(exp)->s_dev))  in set_version_and_fsid_type()
570 fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry,  in fh_compose()  argument
579 	dev_t ex_dev = exp_sb(exp)->s_dev;  in fh_compose()
583 		(long) d_inode(exp->ex_path.dentry)->i_ino,  in fh_compose()
591 	set_version_and_fsid_type(fhp, exp, ref_fh);  in fh_compose()
609 	fhp->fh_export = exp_get(exp);  in fh_compose()
618 		d_inode(exp->ex_path.dentry)->i_ino,  in fh_compose()
619 		exp->ex_fsid, exp->ex_uuid);  in fh_compose()
622 		_fh_update(fhp, exp, dentry);  in fh_compose()
750 	struct svc_export * exp = fhp->fh_export;  in fh_put()  local
757 	if (exp) {  in fh_put()
758 		exp_put(exp);  in fh_put()