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svc_raw.c revision 1.14
      1 /*	$NetBSD: svc_raw.c,v 1.14 2000/07/06 03:10:35 christos 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 <stdlib.h>
     57 
     58 #ifdef __weak_alias
     59 __weak_alias(svc_raw_create,_svc_raw_create)
     60 #endif
     61 
     62 #ifndef UDPMSGSIZE
     63 #define	UDPMSGSIZE 8800
     64 #endif
     65 
     66 /*
     67  * This is the "network" that we will be moving data over
     68  */
     69 static struct svc_raw_private {
     70 	char	*raw_buf;	/* should be shared with the cl handle */
     71 	SVCXPRT	server;
     72 	XDR	xdr_stream;
     73 	char	verf_body[MAX_AUTH_BYTES];
     74 } *svc_raw_private;
     75 
     76 #ifdef __REENT
     77 extern mutex_t	svcraw_lock;
     78 #endif
     79 
     80 static enum xprt_stat svc_raw_stat __P((SVCXPRT *));
     81 static bool_t svc_raw_recv __P((SVCXPRT *, struct rpc_msg *));
     82 static bool_t svc_raw_reply __P((SVCXPRT *, struct rpc_msg *));
     83 static bool_t svc_raw_getargs __P((SVCXPRT *, xdrproc_t, caddr_t));
     84 static bool_t svc_raw_freeargs __P((SVCXPRT *, xdrproc_t, caddr_t));
     85 static void svc_raw_destroy __P((SVCXPRT *));
     86 static void svc_raw_ops __P((SVCXPRT *));
     87 static bool_t svc_raw_control __P((SVCXPRT *, const u_int, void *));
     88 
     89 char *__rpc_rawcombuf = NULL;
     90 
     91 SVCXPRT *
     92 svc_raw_create()
     93 {
     94 	struct svc_raw_private *srp;
     95 /* VARIABLES PROTECTED BY svcraw_lock: svc_raw_private, srp */
     96 
     97 	mutex_lock(&svcraw_lock);
     98 	srp = svc_raw_private;
     99 	if (srp == NULL) {
    100 		srp = (struct svc_raw_private *)calloc(1, sizeof (*srp));
    101 		if (srp == NULL) {
    102 			mutex_unlock(&svcraw_lock);
    103 			return (NULL);
    104 		}
    105 		if (__rpc_rawcombuf == NULL)
    106 			__rpc_rawcombuf = calloc(UDPMSGSIZE, sizeof (char));
    107 		srp->raw_buf = __rpc_rawcombuf; /* Share it with the client */
    108 		svc_raw_private = srp;
    109 	}
    110 	srp->server.xp_fd = FD_SETSIZE;
    111 	srp->server.xp_port = 0;
    112 	srp->server.xp_p3 = NULL;
    113 	svc_raw_ops(&srp->server);
    114 	srp->server.xp_verf.oa_base = srp->verf_body;
    115 	xdrmem_create(&srp->xdr_stream, srp->raw_buf, UDPMSGSIZE, XDR_DECODE);
    116 	xprt_register(&srp->server);
    117 	mutex_unlock(&svcraw_lock);
    118 	return (&srp->server);
    119 }
    120 
    121 /*ARGSUSED*/
    122 static enum xprt_stat
    123 svc_raw_stat(xprt)
    124 SVCXPRT *xprt; /* args needed to satisfy ANSI-C typechecking */
    125 {
    126 	return (XPRT_IDLE);
    127 }
    128 
    129 /*ARGSUSED*/
    130 static bool_t
    131 svc_raw_recv(xprt, msg)
    132 	SVCXPRT *xprt;
    133 	struct rpc_msg *msg;
    134 {
    135 	struct svc_raw_private *srp;
    136 	XDR *xdrs;
    137 
    138 	mutex_lock(&svcraw_lock);
    139 	srp = svc_raw_private;
    140 	if (srp == NULL) {
    141 		mutex_unlock(&svcraw_lock);
    142 		return (FALSE);
    143 	}
    144 	mutex_unlock(&svcraw_lock);
    145 
    146 	xdrs = &srp->xdr_stream;
    147 	xdrs->x_op = XDR_DECODE;
    148 	(void) XDR_SETPOS(xdrs, 0);
    149 	if (! xdr_callmsg(xdrs, msg)) {
    150 		return (FALSE);
    151 	}
    152 	return (TRUE);
    153 }
    154 
    155 /*ARGSUSED*/
    156 static bool_t
    157 svc_raw_reply(xprt, msg)
    158 	SVCXPRT *xprt;
    159 	struct rpc_msg *msg;
    160 {
    161 	struct svc_raw_private *srp;
    162 	XDR *xdrs;
    163 
    164 	mutex_lock(&svcraw_lock);
    165 	srp = svc_raw_private;
    166 	if (srp == NULL) {
    167 		mutex_unlock(&svcraw_lock);
    168 		return (FALSE);
    169 	}
    170 	mutex_unlock(&svcraw_lock);
    171 
    172 	xdrs = &srp->xdr_stream;
    173 	xdrs->x_op = XDR_ENCODE;
    174 	(void) XDR_SETPOS(xdrs, 0);
    175 	if (! xdr_replymsg(xdrs, msg)) {
    176 		return (FALSE);
    177 	}
    178 	(void) XDR_GETPOS(xdrs);  /* called just for overhead */
    179 	return (TRUE);
    180 }
    181 
    182 /*ARGSUSED*/
    183 static bool_t
    184 svc_raw_getargs(xprt, xdr_args, args_ptr)
    185 	SVCXPRT *xprt;
    186 	xdrproc_t xdr_args;
    187 	caddr_t args_ptr;
    188 {
    189 	struct svc_raw_private *srp;
    190 
    191 	mutex_lock(&svcraw_lock);
    192 	srp = svc_raw_private;
    193 	if (srp == NULL) {
    194 		mutex_unlock(&svcraw_lock);
    195 		return (FALSE);
    196 	}
    197 	mutex_unlock(&svcraw_lock);
    198 	return (*xdr_args)(&srp->xdr_stream, args_ptr);
    199 }
    200 
    201 /*ARGSUSED*/
    202 static bool_t
    203 svc_raw_freeargs(xprt, xdr_args, args_ptr)
    204 	SVCXPRT *xprt;
    205 	xdrproc_t xdr_args;
    206 	caddr_t args_ptr;
    207 {
    208 	struct svc_raw_private *srp;
    209 	XDR *xdrs;
    210 
    211 	mutex_lock(&svcraw_lock);
    212 	srp = svc_raw_private;
    213 	if (srp == NULL) {
    214 		mutex_unlock(&svcraw_lock);
    215 		return (FALSE);
    216 	}
    217 	mutex_unlock(&svcraw_lock);
    218 
    219 	xdrs = &srp->xdr_stream;
    220 	xdrs->x_op = XDR_FREE;
    221 	return (*xdr_args)(xdrs, args_ptr);
    222 }
    223 
    224 /*ARGSUSED*/
    225 static void
    226 svc_raw_destroy(xprt)
    227 SVCXPRT *xprt;
    228 {
    229 }
    230 
    231 /*ARGSUSED*/
    232 static bool_t
    233 svc_raw_control(xprt, rq, in)
    234 	SVCXPRT *xprt;
    235 	const u_int	rq;
    236 	void		*in;
    237 {
    238 	return (FALSE);
    239 }
    240 
    241 static void
    242 svc_raw_ops(xprt)
    243 	SVCXPRT *xprt;
    244 {
    245 	static struct xp_ops ops;
    246 	static struct xp_ops2 ops2;
    247 #ifdef __REENT
    248 	extern mutex_t ops_lock;
    249 #endif
    250 
    251 /* VARIABLES PROTECTED BY ops_lock: ops */
    252 
    253 	mutex_lock(&ops_lock);
    254 	if (ops.xp_recv == NULL) {
    255 		ops.xp_recv = svc_raw_recv;
    256 		ops.xp_stat = svc_raw_stat;
    257 		ops.xp_getargs = svc_raw_getargs;
    258 		ops.xp_reply = svc_raw_reply;
    259 		ops.xp_freeargs = svc_raw_freeargs;
    260 		ops.xp_destroy = svc_raw_destroy;
    261 		ops2.xp_control = svc_raw_control;
    262 	}
    263 	xprt->xp_ops = &ops;
    264 	xprt->xp_ops2 = &ops2;
    265 	mutex_unlock(&ops_lock);
    266 }
    267