nfs_server.c

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· C语言 代码 · 共 236 行

#ifndef lint
static char *sccsid = "@(#)nfs_server.c	4.1      (ULTRIX)        7/2/90";
#endif lint

/************************************************************************
 *									*
 *			Copyright (c) 1986 by				*
 *		Digital Equipment Corporation, Maynard, MA		*
 *			All rights reserved.				*
 *									*
 *   This software is furnished under a license and may be used and	*
 *   copied  only  in accordance with the terms of such license and	*
 *   with the  inclusion  of  the  above  copyright  notice.   This	*
 *   software  or  any  other copies thereof may not be provided or	*
 *   otherwise made available to any other person.  No title to and	*
 *   ownership of the software is hereby transferred.			*
 *									*
 *   This software is  derived  from  software  received  from  the	*
 *   University    of   California,   Berkeley,   and   from   Bell	*
 *   Laboratories.  Use, duplication, or disclosure is  subject  to	*
 *   restrictions  under  license  agreements  with  University  of	*
 *   California and with AT&T.						*
 *									*
 *   The information in this software is subject to change  without	*
 *   notice  and should not be construed as a commitment by Digital	*
 *   Equipment Corporation.						*
 *									*
 *   Digital assumes no responsibility for the use  or  reliability	*
 *   of its software on equipment which is not supplied by Digital.	*
 *									*
 ************************************************************************/

/*
 *	Portions of this software have been licensed to 
 *	Digital Equipment Company, Maynard, MA.
 *	Copyright (c) 1987 Sun Microsystems, Inc.  ALL RIGHTS RESERVED.
 */
/*
 *	Modification History:
 * 
 *      10 Nov 89 -- lebel
 *              Added direct maps, bugfixes, metacharacter handling and
 *              other fun stuff from the reference tape.
 * 	14 Jun 89 -- condylis
 *		Added copyright header.
 *
 */

#include <stdio.h>
#include <rpc/rpc.h>
#include "nfs_prot.h"

int trace;

void
nfs_program_2(rqstp, transp)
	struct svc_req *rqstp;
	SVCXPRT *transp;
{
	union {
		nfs_fh nfsproc_getattr_2_arg;
		sattrargs nfsproc_setattr_2_arg;
		diropargs nfsproc_lookup_2_arg;
		nfs_fh nfsproc_readlink_2_arg;
#ifndef notdef
	/* in brad's original code */
		readres nfsproc_read_2_arg;
#else notdef
	/* generated by rpcgen */
		readargs nfsproc_read_2_arg;
#endif notdef
		writeargs nfsproc_write_2_arg;
		createargs nfsproc_create_2_arg;
		diropargs nfsproc_remove_2_arg;
		renameargs nfsproc_rename_2_arg;
		linkargs nfsproc_link_2_arg;
		symlinkargs nfsproc_symlink_2_arg;
		createargs nfsproc_mkdir_2_arg;
		diropargs nfsproc_rmdir_2_arg;
		readdirargs nfsproc_readdir_2_arg;
		nfs_fh nfsproc_statfs_2_arg;
	} argument;
	char *result;
	bool_t (*xdr_argument)(), (*xdr_result)();
	char *(*local)();
	extern attrstat *nfsproc_getattr_2();
	extern attrstat *nfsproc_setattr_2();
	extern void *nfsproc_root_2();
	extern diropres *nfsproc_lookup_2();
	extern readlinkres *nfsproc_readlink_2();
	extern readres *nfsproc_read_2();
	extern void *nfsproc_writecache_2();
	extern attrstat *nfsproc_write_2();
	extern diropres *nfsproc_create_2();
	extern nfsstat *nfsproc_remove_2();
	extern nfsstat *nfsproc_rename_2();
	extern nfsstat *nfsproc_link_2();
	extern nfsstat *nfsproc_symlink_2();
	extern diropres *nfsproc_mkdir_2();
	extern nfsstat *nfsproc_rmdir_2();
	extern readdirres *nfsproc_readdir_2();
	extern statfsres *nfsproc_statfs_2();

	switch (rqstp->rq_proc) {
	case NULLPROC:
		(void) svc_sendreply(transp, xdr_void, (caddr_t)NULL);
		return;

	case NFSPROC_GETATTR:
		xdr_argument = xdr_nfs_fh;
		xdr_result = xdr_attrstat;
		local = (char *(*)()) nfsproc_getattr_2;
		break;

	case NFSPROC_SETATTR:
		xdr_argument = xdr_sattrargs;
		xdr_result = xdr_attrstat;
		local = (char *(*)()) nfsproc_setattr_2;
		break;

	case NFSPROC_ROOT:
		xdr_argument = xdr_void;
		xdr_result = xdr_void;
		local = (char *(*)()) nfsproc_root_2;
		break;

	case NFSPROC_LOOKUP:
		xdr_argument = xdr_diropargs;
		xdr_result = xdr_diropres;
		local = (char *(*)()) nfsproc_lookup_2;
		break;

	case NFSPROC_READLINK:
		xdr_argument = xdr_nfs_fh;
		xdr_result = xdr_readlinkres;
		local = (char *(*)()) nfsproc_readlink_2;
		break;

	case NFSPROC_READ:
		xdr_argument = xdr_readargs;
		xdr_result = xdr_readres;
		local = (char *(*)()) nfsproc_read_2;
		break;

	case NFSPROC_WRITECACHE:
		xdr_argument = xdr_void;
		xdr_result = xdr_void;
		local = (char *(*)()) nfsproc_writecache_2;
		break;

	case NFSPROC_WRITE:
		xdr_argument = xdr_writeargs;
		xdr_result = xdr_attrstat;
		local = (char *(*)()) nfsproc_write_2;
		break;

	case NFSPROC_CREATE:
		xdr_argument = xdr_createargs;
		xdr_result = xdr_diropres;
		local = (char *(*)()) nfsproc_create_2;
		break;

	case NFSPROC_REMOVE:
		xdr_argument = xdr_diropargs;
		xdr_result = xdr_nfsstat;
		local = (char *(*)()) nfsproc_remove_2;
		break;

	case NFSPROC_RENAME:
		xdr_argument = xdr_renameargs;
		xdr_result = xdr_nfsstat;
		local = (char *(*)()) nfsproc_rename_2;
		break;

	case NFSPROC_LINK:
		xdr_argument = xdr_linkargs;
		xdr_result = xdr_nfsstat;
		local = (char *(*)()) nfsproc_link_2;
		break;

	case NFSPROC_SYMLINK:
		xdr_argument = xdr_symlinkargs;
		xdr_result = xdr_nfsstat;
		local = (char *(*)()) nfsproc_symlink_2;
		break;

	case NFSPROC_MKDIR:
		xdr_argument = xdr_createargs;
		xdr_result = xdr_diropres;
		local = (char *(*)()) nfsproc_mkdir_2;
		break;

	case NFSPROC_RMDIR:
		xdr_argument = xdr_diropargs;
		xdr_result = xdr_nfsstat;
		local = (char *(*)()) nfsproc_rmdir_2;
		break;

	case NFSPROC_READDIR:
		xdr_argument = xdr_readdirargs;
		xdr_result = xdr_readdirres;
		local = (char *(*)()) nfsproc_readdir_2;
		break;

	case NFSPROC_STATFS:
		xdr_argument = xdr_nfs_fh;
		xdr_result = xdr_statfsres;
		local = (char *(*)()) nfsproc_statfs_2;
		break;

	default:
		svcerr_noproc(transp);
		return;
	}
	if (rqstp->rq_cred.oa_flavor != AUTH_UNIX) {
		svcerr_weakauth(transp);
		return;
	}
	bzero(&argument, sizeof(argument));
	if (! svc_getargs(transp, xdr_argument, &argument)) {
		svcerr_decode(transp);
		return;
	}
	if (trace)
		trace_call(rqstp->rq_proc, &argument); 
	result = (*local)(&argument, rqstp->rq_clntcred);
	if (trace)
		trace_return(rqstp->rq_proc, result); 
	if (! svc_sendreply(transp, xdr_result, (caddr_t)result)) {
		svcerr_systemerr(transp);
	}
	if (! svc_freeargs(transp, xdr_argument, &argument)) {
		exit(1);
	}
}