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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
128 lines
3.9 KiB
C
128 lines
3.9 KiB
C
/* $NetBSD: rpc_com.h,v 1.3 2000/12/10 04:10:08 christos 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, MERCHANTIBILITY 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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* $FreeBSD$
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*/
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/*
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* Copyright (c) 1986 - 1991 by Sun Microsystems, Inc.
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*/
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/*
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* rpc_com.h, Common definitions for both the server and client side.
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* All for the topmost layer of rpc
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*
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* In Sun's tirpc distribution, this was installed as <rpc/rpc_com.h>,
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* but as it contains only non-exported interfaces, it was moved here.
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*/
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#ifndef _RPC_RPCCOM_H
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#define _RPC_RPCCOM_H
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#include <sys/cdefs.h>
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/* #pragma ident "@(#)rpc_com.h 1.11 93/07/05 SMI" */
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/*
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* The max size of the transport, if the size cannot be determined
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* by other means.
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*/
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#define RPC_MAXDATASIZE 9000
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#define RPC_MAXADDRSIZE 1024
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#ifdef _KERNEL
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#define __RPC_GETXID(now) ((uint32_t)curproc->p_pid ^ (uint32_t)(now)->tv_sec ^ \
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(uint32_t)(now)->tv_usec)
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#else
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#define __RPC_GETXID(now) ((uint32_t)getpid() ^ (uint32_t)(now)->tv_sec ^ \
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(uint32_t)(now)->tv_usec)
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#endif
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__BEGIN_DECLS
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#ifndef _KERNEL
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extern u_int __rpc_get_a_size(int);
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extern int __rpc_dtbsize(void);
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extern struct netconfig * __rpcgettp(int);
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extern int __rpc_get_default_domain(char **);
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char *__rpc_taddr2uaddr_af(int, const struct netbuf *);
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struct netbuf *__rpc_uaddr2taddr_af(int, const char *);
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int __rpc_fixup_addr(struct netbuf *, const struct netbuf *);
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int __rpc_sockinfo2netid(struct __rpc_sockinfo *, const char **);
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int __rpc_seman2socktype(int);
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int __rpc_socktype2seman(int);
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void *rpc_nullproc(CLIENT *);
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int __rpc_sockisbound(int);
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struct netbuf *__rpcb_findaddr_timed(rpcprog_t, rpcvers_t,
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const struct netconfig *, const char *host, CLIENT **clpp,
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struct timeval *tp);
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bool_t __rpc_control(int,void *);
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char *_get_next_token(char *, int);
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bool_t __svc_clean_idle(fd_set *, int, bool_t);
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bool_t __xdrrec_setnonblock(XDR *, int);
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bool_t __xdrrec_getrec(XDR *, enum xprt_stat *, bool_t);
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void __xprt_unregister_unlocked(SVCXPRT *);
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SVCXPRT **__svc_xports;
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int __svc_maxrec;
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#else
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#define SUN_LEN(su) \
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(sizeof(*(su)) - sizeof((su)->sun_path) + strlen((su)->sun_path))
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extern u_int __rpc_get_a_size(int);
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extern char *__rpc_taddr2uaddr_af(int, const struct netbuf *);
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extern struct netbuf *__rpc_uaddr2taddr_af(int, const char *);
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extern int __rpc_seman2socktype(int);
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extern int __rpc_socktype2seman(int);
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extern int __rpc_sockisbound(struct socket*);
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extern const char *__rpc_inet_ntop(int af, const void * __restrict src,
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char * __restrict dst, socklen_t size);
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extern int __rpc_inet_pton(int af, const char * __restrict src,
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void * __restrict dst);
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extern int bindresvport(struct socket *so, struct sockaddr *sa);
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struct xucred;
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struct __rpc_xdr;
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bool_t xdr_authunix_parms(struct __rpc_xdr *xdrs, uint32_t *time, struct xucred *cred);
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#endif
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__END_DECLS
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#endif /* _RPC_RPCCOM_H */
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