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svc_raw.c revision 1.15
      1 /*	$NetBSD: svc_raw.c,v 1.15 2001/01/04 14:42:22 lukem Exp $	*/
      2 
      3 /*
      4  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
      5  * unrestricted use provided that this legend is included on all tape
      6  * media and as a part of the software program in whole or part.  Users
      7  * may copy or modify Sun RPC without charge, but are not authorized
      8  * to license or distribute it to anyone else except as part of a product or
      9  * program developed by the user.
     10  *
     11  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
     12  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
     13  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
     14  *
     15  * Sun RPC is provided with no support and without any obligation on the
     16  * part of Sun Microsystems, Inc. to assist in its use, correction,
     17  * modification or enhancement.
     18  *
     19  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
     20  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
     21  * OR ANY PART THEREOF.
     22  *
     23  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
     24  * or profits or other special, indirect and consequential damages, even if
     25  * Sun has been advised of the possibility of such damages.
     26  *
     27  * Sun Microsystems, Inc.
     28  * 2550 Garcia Avenue
     29  * Mountain View, California  94043
     30  */
     31 /*
     32  * Copyright (c) 1986-1991 by Sun Microsystems Inc.
     33  */
     34 
     35 /* #ident	"@(#)svc_raw.c	1.16	94/04/24 SMI" */
     36 
     37 #if 0
     38 #if !defined(lint) && defined(SCCSIDS)
     39 static char sccsid[] = "@(#)svc_raw.c 1.25 89/01/31 Copyr 1984 Sun Micro";
     40 #endif
     41 #endif
     42 
     43 /*
     44  * svc_raw.c,   This a toy for simple testing and timing.
     45  * Interface to create an rpc client and server in the same UNIX process.
     46  * This lets us similate rpc and get rpc (round trip) overhead, without
     47  * any interference from the kernal.
     48  *
     49  */
     50 
     51 #include "namespace.h"
     52 #include "reentrant.h"
     53 #include <rpc/rpc.h>
     54 #include <sys/types.h>
     55 #include <rpc/raw.h>
     56 #include <assert.h>
     57 #include <stdlib.h>
     58 
     59 #ifdef __weak_alias
     60 __weak_alias(svc_raw_create,_svc_raw_create)
     61 #endif
     62 
     63 #ifndef UDPMSGSIZE
     64 #define	UDPMSGSIZE 8800
     65 #endif
     66 
     67 /*
     68  * This is the "network" that we will be moving data over
     69  */
     70 static struct svc_raw_private {
     71 	char	*raw_buf;	/* should be shared with the cl handle */
     72 	SVCXPRT	server;
     73 	XDR	xdr_stream;
     74 	char	verf_body[MAX_AUTH_BYTES];
     75 } *svc_raw_private;
     76 
     77 #ifdef __REENT
     78 extern mutex_t	svcraw_lock;
     79 #endif
     80 
     81 static enum xprt_stat svc_raw_stat __P((SVCXPRT *));
     82 static bool_t svc_raw_recv __P((SVCXPRT *, struct rpc_msg *));
     83 static bool_t svc_raw_reply __P((SVCXPRT *, struct rpc_msg *));
     84 static bool_t svc_raw_getargs __P((SVCXPRT *, xdrproc_t, caddr_t));
     85 static bool_t svc_raw_freeargs __P((SVCXPRT *, xdrproc_t, caddr_t));
     86 static void svc_raw_destroy __P((SVCXPRT *));
     87 static void svc_raw_ops __P((SVCXPRT *));
     88 static bool_t svc_raw_control __P((SVCXPRT *, const u_int, void *));
     89 
     90 char *__rpc_rawcombuf = NULL;
     91 
     92 SVCXPRT *
     93 svc_raw_create()
     94 {
     95 	struct svc_raw_private *srp;
     96 /* VARIABLES PROTECTED BY svcraw_lock: svc_raw_private, srp */
     97 
     98 	mutex_lock(&svcraw_lock);
     99 	srp = svc_raw_private;
    100 	if (srp == NULL) {
    101 		srp = (struct svc_raw_private *)calloc(1, sizeof (*srp));
    102 		if (srp == NULL) {
    103 			mutex_unlock(&svcraw_lock);
    104 			return (NULL);
    105 		}
    106 		if (__rpc_rawcombuf == NULL)
    107 			__rpc_rawcombuf = calloc(UDPMSGSIZE, sizeof (char));
    108 		srp->raw_buf = __rpc_rawcombuf; /* Share it with the client */
    109 		svc_raw_private = srp;
    110 	}
    111 	srp->server.xp_fd = FD_SETSIZE;
    112 	srp->server.xp_port = 0;
    113 	srp->server.xp_p3 = NULL;
    114 	svc_raw_ops(&srp->server);
    115 	srp->server.xp_verf.oa_base = srp->verf_body;
    116 	xdrmem_create(&srp->xdr_stream, srp->raw_buf, UDPMSGSIZE, XDR_DECODE);
    117 	xprt_register(&srp->server);
    118 	mutex_unlock(&svcraw_lock);
    119 	return (&srp->server);
    120 }
    121 
    122 /*ARGSUSED*/
    123 static enum xprt_stat
    124 svc_raw_stat(xprt)
    125 SVCXPRT *xprt; /* args needed to satisfy ANSI-C typechecking */
    126 {
    127 	return (XPRT_IDLE);
    128 }
    129 
    130 /*ARGSUSED*/
    131 static bool_t
    132 svc_raw_recv(xprt, msg)
    133 	SVCXPRT *xprt;
    134 	struct rpc_msg *msg;
    135 {
    136 	struct svc_raw_private *srp;
    137 	XDR *xdrs;
    138 
    139 	mutex_lock(&svcraw_lock);
    140 	srp = svc_raw_private;
    141 	if (srp == NULL) {
    142 		mutex_unlock(&svcraw_lock);
    143 		return (FALSE);
    144 	}
    145 	mutex_unlock(&svcraw_lock);
    146 
    147 	xdrs = &srp->xdr_stream;
    148 	xdrs->x_op = XDR_DECODE;
    149 	(void) XDR_SETPOS(xdrs, 0);
    150 	if (! xdr_callmsg(xdrs, msg)) {
    151 		return (FALSE);
    152 	}
    153 	return (TRUE);
    154 }
    155 
    156 /*ARGSUSED*/
    157 static bool_t
    158 svc_raw_reply(xprt, msg)
    159 	SVCXPRT *xprt;
    160 	struct rpc_msg *msg;
    161 {
    162 	struct svc_raw_private *srp;
    163 	XDR *xdrs;
    164 
    165 	mutex_lock(&svcraw_lock);
    166 	srp = svc_raw_private;
    167 	if (srp == NULL) {
    168 		mutex_unlock(&svcraw_lock);
    169 		return (FALSE);
    170 	}
    171 	mutex_unlock(&svcraw_lock);
    172 
    173 	xdrs = &srp->xdr_stream;
    174 	xdrs->x_op = XDR_ENCODE;
    175 	(void) XDR_SETPOS(xdrs, 0);
    176 	if (! xdr_replymsg(xdrs, msg)) {
    177 		return (FALSE);
    178 	}
    179 	(void) XDR_GETPOS(xdrs);  /* called just for overhead */
    180 	return (TRUE);
    181 }
    182 
    183 /*ARGSUSED*/
    184 static bool_t
    185 svc_raw_getargs(xprt, xdr_args, args_ptr)
    186 	SVCXPRT *xprt;
    187 	xdrproc_t xdr_args;
    188 	caddr_t args_ptr;
    189 {
    190 	struct svc_raw_private *srp;
    191 
    192 	mutex_lock(&svcraw_lock);
    193 	srp = svc_raw_private;
    194 	if (srp == NULL) {
    195 		mutex_unlock(&svcraw_lock);
    196 		return (FALSE);
    197 	}
    198 	mutex_unlock(&svcraw_lock);
    199 	return (*xdr_args)(&srp->xdr_stream, args_ptr);
    200 }
    201 
    202 /*ARGSUSED*/
    203 static bool_t
    204 svc_raw_freeargs(xprt, xdr_args, args_ptr)
    205 	SVCXPRT *xprt;
    206 	xdrproc_t xdr_args;
    207 	caddr_t args_ptr;
    208 {
    209 	struct svc_raw_private *srp;
    210 	XDR *xdrs;
    211 
    212 	mutex_lock(&svcraw_lock);
    213 	srp = svc_raw_private;
    214 	if (srp == NULL) {
    215 		mutex_unlock(&svcraw_lock);
    216 		return (FALSE);
    217 	}
    218 	mutex_unlock(&svcraw_lock);
    219 
    220 	xdrs = &srp->xdr_stream;
    221 	xdrs->x_op = XDR_FREE;
    222 	return (*xdr_args)(xdrs, args_ptr);
    223 }
    224 
    225 /*ARGSUSED*/
    226 static void
    227 svc_raw_destroy(xprt)
    228 SVCXPRT *xprt;
    229 {
    230 }
    231 
    232 /*ARGSUSED*/
    233 static bool_t
    234 svc_raw_control(xprt, rq, in)
    235 	SVCXPRT *xprt;
    236 	const u_int	rq;
    237 	void		*in;
    238 {
    239 	return (FALSE);
    240 }
    241 
    242 static void
    243 svc_raw_ops(xprt)
    244 	SVCXPRT *xprt;
    245 {
    246 	static struct xp_ops ops;
    247 	static struct xp_ops2 ops2;
    248 #ifdef __REENT
    249 	extern mutex_t ops_lock;
    250 #endif
    251 
    252 	_DIAGASSERT(xprt != NULL);
    253 
    254 /* VARIABLES PROTECTED BY ops_lock: ops */
    255 
    256 	mutex_lock(&ops_lock);
    257 	if (ops.xp_recv == NULL) {
    258 		ops.xp_recv = svc_raw_recv;
    259 		ops.xp_stat = svc_raw_stat;
    260 		ops.xp_getargs = svc_raw_getargs;
    261 		ops.xp_reply = svc_raw_reply;
    262 		ops.xp_freeargs = svc_raw_freeargs;
    263 		ops.xp_destroy = svc_raw_destroy;
    264 		ops2.xp_control = svc_raw_control;
    265 	}
    266 	xprt->xp_ops = &ops;
    267 	xprt->xp_ops2 = &ops2;
    268 	mutex_unlock(&ops_lock);
    269 }
    270