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and server. This replaces the RPC implementation of the NFS client and server with the newer RPC implementation originally developed (actually ported from the userland sunrpc code) to support the NFS Lock Manager. I have tested this code extensively and I believe it is stable and that performance is at least equal to the legacy RPC implementation. The NFS code currently contains support for both the new RPC implementation and the older legacy implementation inherited from the original NFS codebase. The default is to use the new implementation - add the NFS_LEGACYRPC option to fall back to the old code. When I merge this support back to RELENG_7, I will probably change this so that users have to 'opt in' to get the new code. To use RPCSEC_GSS on either client or server, you must build a kernel which includes the KGSSAPI option and the crypto device. On the userland side, you must build at least a new libc, mountd, mount_nfs and gssd. You must install new versions of /etc/rc.d/gssd and /etc/rc.d/nfsd and add 'gssd_enable=YES' to /etc/rc.conf. As long as gssd is running, you should be able to mount an NFS filesystem from a server that requires RPCSEC_GSS authentication. The mount itself can happen without any kerberos credentials but all access to the filesystem will be denied unless the accessing user has a valid ticket file in the standard place (/tmp/krb5cc_<uid>). There is currently no support for situations where the ticket file is in a different place, such as when the user logged in via SSH and has delegated credentials from that login. This restriction is also present in Solaris and Linux. In theory, we could improve this in future, possibly using Brooks Davis' implementation of variant symlinks. Supporting RPCSEC_GSS on a server is nearly as simple. You must create service creds for the server in the form 'nfs/<fqdn>@<REALM>' and install them in /etc/krb5.keytab. The standard heimdal utility ktutil makes this fairly easy. After the service creds have been created, you can add a '-sec=krb5' option to /etc/exports and restart both mountd and nfsd. The only other difference an administrator should notice is that nfsd doesn't fork to create service threads any more. In normal operation, there will be two nfsd processes, one in userland waiting for TCP connections and one in the kernel handling requests. The latter process will create as many kthreads as required - these should be visible via 'top -H'. The code has some support for varying the number of service threads according to load but initially at least, nfsd uses a fixed number of threads according to the value supplied to its '-n' option. Sponsored by: Isilon Systems MFC after: 1 month
215 lines
4.8 KiB
C
215 lines
4.8 KiB
C
/* $NetBSD: rpc_msg.h,v 1.11 2000/06/02 22:57:56 fvdl Exp $ */
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/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*
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* from: @(#)rpc_msg.h 1.7 86/07/16 SMI
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* from: @(#)rpc_msg.h 2.1 88/07/29 4.0 RPCSRC
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* $FreeBSD$
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*/
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/*
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* rpc_msg.h
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* rpc message definition
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*
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* Copyright (C) 1984, Sun Microsystems, Inc.
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*/
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#ifndef _RPC_RPC_MSG_H
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#define _RPC_RPC_MSG_H
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#define RPC_MSG_VERSION ((uint32_t) 2)
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#define RPC_SERVICE_PORT ((u_short) 2048)
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/*
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* Bottom up definition of an rpc message.
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* NOTE: call and reply use the same overall stuct but
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* different parts of unions within it.
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*/
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enum msg_type {
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CALL=0,
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REPLY=1
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};
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enum reply_stat {
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MSG_ACCEPTED=0,
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MSG_DENIED=1
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};
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enum accept_stat {
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SUCCESS=0,
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PROG_UNAVAIL=1,
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PROG_MISMATCH=2,
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PROC_UNAVAIL=3,
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GARBAGE_ARGS=4,
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SYSTEM_ERR=5
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};
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enum reject_stat {
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RPC_MISMATCH=0,
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AUTH_ERROR=1
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};
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/*
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* Reply part of an rpc exchange
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*/
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/*
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* Reply to an rpc request that was accepted by the server.
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* Note: there could be an error even though the request was
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* accepted.
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*/
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struct accepted_reply {
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struct opaque_auth ar_verf;
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enum accept_stat ar_stat;
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union {
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struct {
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rpcvers_t low;
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rpcvers_t high;
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} AR_versions;
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struct {
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caddr_t where;
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xdrproc_t proc;
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} AR_results;
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/* and many other null cases */
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} ru;
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#define ar_results ru.AR_results
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#define ar_vers ru.AR_versions
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};
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/*
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* Reply to an rpc request that was rejected by the server.
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*/
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struct rejected_reply {
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enum reject_stat rj_stat;
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union {
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struct {
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rpcvers_t low;
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rpcvers_t high;
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} RJ_versions;
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enum auth_stat RJ_why; /* why authentication did not work */
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} ru;
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#define rj_vers ru.RJ_versions
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#define rj_why ru.RJ_why
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};
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/*
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* Body of a reply to an rpc request.
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*/
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struct reply_body {
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enum reply_stat rp_stat;
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union {
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struct accepted_reply RP_ar;
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struct rejected_reply RP_dr;
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} ru;
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#define rp_acpt ru.RP_ar
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#define rp_rjct ru.RP_dr
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};
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/*
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* Body of an rpc request call.
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*/
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struct call_body {
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rpcvers_t cb_rpcvers; /* must be equal to two */
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rpcprog_t cb_prog;
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rpcvers_t cb_vers;
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rpcproc_t cb_proc;
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struct opaque_auth cb_cred;
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struct opaque_auth cb_verf; /* protocol specific - provided by client */
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};
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/*
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* The rpc message
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*/
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struct rpc_msg {
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uint32_t rm_xid;
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enum msg_type rm_direction;
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union {
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struct call_body RM_cmb;
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struct reply_body RM_rmb;
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} ru;
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#define rm_call ru.RM_cmb
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#define rm_reply ru.RM_rmb
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};
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#define acpted_rply ru.RM_rmb.ru.RP_ar
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#define rjcted_rply ru.RM_rmb.ru.RP_dr
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__BEGIN_DECLS
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/*
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* XDR routine to handle a rpc message.
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* xdr_callmsg(xdrs, cmsg)
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* XDR *xdrs;
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* struct rpc_msg *cmsg;
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*/
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extern bool_t xdr_callmsg(XDR *, struct rpc_msg *);
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/*
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* XDR routine to pre-serialize the static part of a rpc message.
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* xdr_callhdr(xdrs, cmsg)
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* XDR *xdrs;
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* struct rpc_msg *cmsg;
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*/
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extern bool_t xdr_callhdr(XDR *, struct rpc_msg *);
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/*
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* XDR routine to handle a rpc reply.
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* xdr_replymsg(xdrs, rmsg)
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* XDR *xdrs;
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* struct rpc_msg *rmsg;
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*/
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extern bool_t xdr_replymsg(XDR *, struct rpc_msg *);
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/*
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* XDR routine to handle an accepted rpc reply.
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* xdr_accepted_reply(xdrs, rej)
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* XDR *xdrs;
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* struct accepted_reply *rej;
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*/
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extern bool_t xdr_accepted_reply(XDR *, struct accepted_reply *);
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/*
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* XDR routine to handle a rejected rpc reply.
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* xdr_rejected_reply(xdrs, rej)
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* XDR *xdrs;
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* struct rejected_reply *rej;
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*/
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extern bool_t xdr_rejected_reply(XDR *, struct rejected_reply *);
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/*
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* Fills in the error part of a reply message.
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* _seterr_reply(msg, error)
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* struct rpc_msg *msg;
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* struct rpc_err *error;
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*/
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extern enum clnt_stat _seterr_reply(struct rpc_msg *, struct rpc_err *);
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__END_DECLS
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#endif /* !_RPC_RPC_MSG_H */
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