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svc_raw.c revision 1.17.6.1
      1 /*	$NetBSD: svc_raw.c,v 1.17.6.1 2005/11/21 20:15:20 tron 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 #include <sys/cdefs.h>
     38 #if defined(LIBC_SCCS) && !defined(lint)
     39 #if 0
     40 static char sccsid[] = "@(#)svc_raw.c 1.25 89/01/31 Copyr 1984 Sun Micro";
     41 #else
     42 __RCSID("$NetBSD: svc_raw.c,v 1.17.6.1 2005/11/21 20:15:20 tron Exp $");
     43 #endif
     44 #endif
     45 
     46 /*
     47  * svc_raw.c,   This a toy for simple testing and timing.
     48  * Interface to create an rpc client and server in the same UNIX process.
     49  * This lets us similate rpc and get rpc (round trip) overhead, without
     50  * any interference from the kernal.
     51  *
     52  */
     53 
     54 #include "namespace.h"
     55 #include "reentrant.h"
     56 #include <rpc/rpc.h>
     57 #include <sys/types.h>
     58 #include <rpc/raw.h>
     59 #include <assert.h>
     60 #include <stdlib.h>
     61 
     62 #ifdef __weak_alias
     63 __weak_alias(svc_raw_create,_svc_raw_create)
     64 #endif
     65 
     66 #ifndef UDPMSGSIZE
     67 #define	UDPMSGSIZE 8800
     68 #endif
     69 
     70 /*
     71  * This is the "network" that we will be moving data over
     72  */
     73 static struct svc_raw_private {
     74 	char	*raw_buf;	/* should be shared with the cl handle */
     75 	SVCXPRT	server;
     76 	XDR	xdr_stream;
     77 	char	verf_body[MAX_AUTH_BYTES];
     78 } *svc_raw_private;
     79 
     80 #ifdef _REENTRANT
     81 extern mutex_t	svcraw_lock;
     82 #endif
     83 
     84 static enum xprt_stat svc_raw_stat __P((SVCXPRT *));
     85 static bool_t svc_raw_recv __P((SVCXPRT *, struct rpc_msg *));
     86 static bool_t svc_raw_reply __P((SVCXPRT *, struct rpc_msg *));
     87 static bool_t svc_raw_getargs __P((SVCXPRT *, xdrproc_t, caddr_t));
     88 static bool_t svc_raw_freeargs __P((SVCXPRT *, xdrproc_t, caddr_t));
     89 static void svc_raw_destroy __P((SVCXPRT *));
     90 static void svc_raw_ops __P((SVCXPRT *));
     91 static bool_t svc_raw_control __P((SVCXPRT *, const u_int, void *));
     92 
     93 char *__rpc_rawcombuf = NULL;
     94 
     95 SVCXPRT *
     96 svc_raw_create()
     97 {
     98 	struct svc_raw_private *srp;
     99 /* VARIABLES PROTECTED BY svcraw_lock: svc_raw_private, srp */
    100 
    101 	mutex_lock(&svcraw_lock);
    102 	srp = svc_raw_private;
    103 	if (srp == NULL) {
    104 		srp = (struct svc_raw_private *)calloc(1, sizeof (*srp));
    105 		if (srp == NULL) {
    106 			mutex_unlock(&svcraw_lock);
    107 			return (NULL);
    108 		}
    109 		if (__rpc_rawcombuf == NULL)
    110 			__rpc_rawcombuf = malloc(UDPMSGSIZE);
    111 		srp->raw_buf = __rpc_rawcombuf; /* Share it with the client */
    112 		svc_raw_private = srp;
    113 	}
    114 	srp->server.xp_fd = FD_SETSIZE;
    115 	srp->server.xp_port = 0;
    116 	srp->server.xp_p3 = NULL;
    117 	svc_raw_ops(&srp->server);
    118 	srp->server.xp_verf.oa_base = srp->verf_body;
    119 	xdrmem_create(&srp->xdr_stream, srp->raw_buf, UDPMSGSIZE, XDR_DECODE);
    120 	xprt_register(&srp->server);
    121 	mutex_unlock(&svcraw_lock);
    122 	return (&srp->server);
    123 }
    124 
    125 /*ARGSUSED*/
    126 static enum xprt_stat
    127 svc_raw_stat(xprt)
    128 SVCXPRT *xprt; /* args needed to satisfy ANSI-C typechecking */
    129 {
    130 	return (XPRT_IDLE);
    131 }
    132 
    133 /*ARGSUSED*/
    134 static bool_t
    135 svc_raw_recv(xprt, msg)
    136 	SVCXPRT *xprt;
    137 	struct rpc_msg *msg;
    138 {
    139 	struct svc_raw_private *srp;
    140 	XDR *xdrs;
    141 
    142 	mutex_lock(&svcraw_lock);
    143 	srp = svc_raw_private;
    144 	if (srp == NULL) {
    145 		mutex_unlock(&svcraw_lock);
    146 		return (FALSE);
    147 	}
    148 	mutex_unlock(&svcraw_lock);
    149 
    150 	xdrs = &srp->xdr_stream;
    151 	xdrs->x_op = XDR_DECODE;
    152 	(void) XDR_SETPOS(xdrs, 0);
    153 	if (! xdr_callmsg(xdrs, msg)) {
    154 		return (FALSE);
    155 	}
    156 	return (TRUE);
    157 }
    158 
    159 /*ARGSUSED*/
    160 static bool_t
    161 svc_raw_reply(xprt, msg)
    162 	SVCXPRT *xprt;
    163 	struct rpc_msg *msg;
    164 {
    165 	struct svc_raw_private *srp;
    166 	XDR *xdrs;
    167 
    168 	mutex_lock(&svcraw_lock);
    169 	srp = svc_raw_private;
    170 	if (srp == NULL) {
    171 		mutex_unlock(&svcraw_lock);
    172 		return (FALSE);
    173 	}
    174 	mutex_unlock(&svcraw_lock);
    175 
    176 	xdrs = &srp->xdr_stream;
    177 	xdrs->x_op = XDR_ENCODE;
    178 	(void) XDR_SETPOS(xdrs, 0);
    179 	if (! xdr_replymsg(xdrs, msg)) {
    180 		return (FALSE);
    181 	}
    182 	(void) XDR_GETPOS(xdrs);  /* called just for overhead */
    183 	return (TRUE);
    184 }
    185 
    186 /*ARGSUSED*/
    187 static bool_t
    188 svc_raw_getargs(xprt, xdr_args, args_ptr)
    189 	SVCXPRT *xprt;
    190 	xdrproc_t xdr_args;
    191 	caddr_t args_ptr;
    192 {
    193 	struct svc_raw_private *srp;
    194 
    195 	mutex_lock(&svcraw_lock);
    196 	srp = svc_raw_private;
    197 	if (srp == NULL) {
    198 		mutex_unlock(&svcraw_lock);
    199 		return (FALSE);
    200 	}
    201 	mutex_unlock(&svcraw_lock);
    202 	return (*xdr_args)(&srp->xdr_stream, args_ptr);
    203 }
    204 
    205 /*ARGSUSED*/
    206 static bool_t
    207 svc_raw_freeargs(xprt, xdr_args, args_ptr)
    208 	SVCXPRT *xprt;
    209 	xdrproc_t xdr_args;
    210 	caddr_t args_ptr;
    211 {
    212 	struct svc_raw_private *srp;
    213 	XDR *xdrs;
    214 
    215 	mutex_lock(&svcraw_lock);
    216 	srp = svc_raw_private;
    217 	if (srp == NULL) {
    218 		mutex_unlock(&svcraw_lock);
    219 		return (FALSE);
    220 	}
    221 	mutex_unlock(&svcraw_lock);
    222 
    223 	xdrs = &srp->xdr_stream;
    224 	xdrs->x_op = XDR_FREE;
    225 	return (*xdr_args)(xdrs, args_ptr);
    226 }
    227 
    228 /*ARGSUSED*/
    229 static void
    230 svc_raw_destroy(xprt)
    231 SVCXPRT *xprt;
    232 {
    233 }
    234 
    235 /*ARGSUSED*/
    236 static bool_t
    237 svc_raw_control(xprt, rq, in)
    238 	SVCXPRT *xprt;
    239 	const u_int	rq;
    240 	void		*in;
    241 {
    242 	return (FALSE);
    243 }
    244 
    245 static void
    246 svc_raw_ops(xprt)
    247 	SVCXPRT *xprt;
    248 {
    249 	static struct xp_ops ops;
    250 	static struct xp_ops2 ops2;
    251 #ifdef _REENTRANT
    252 	extern mutex_t ops_lock;
    253 #endif
    254 
    255 	_DIAGASSERT(xprt != NULL);
    256 
    257 /* VARIABLES PROTECTED BY ops_lock: ops */
    258 
    259 	mutex_lock(&ops_lock);
    260 	if (ops.xp_recv == NULL) {
    261 		ops.xp_recv = svc_raw_recv;
    262 		ops.xp_stat = svc_raw_stat;
    263 		ops.xp_getargs = svc_raw_getargs;
    264 		ops.xp_reply = svc_raw_reply;
    265 		ops.xp_freeargs = svc_raw_freeargs;
    266 		ops.xp_destroy = svc_raw_destroy;
    267 		ops2.xp_control = svc_raw_control;
    268 	}
    269 	xprt->xp_ops = &ops;
    270 	xprt->xp_ops2 = &ops2;
    271 	mutex_unlock(&ops_lock);
    272 }
    273