lib/libc/rpc/svc_raw.c

   1 /*
   2  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   3  * unrestricted use provided that this legend is included on all tape
   4  * media and as a part of the software program in whole or part.  Users
   5  * may copy or modify Sun RPC without charge, but are not authorized
   6  * to license or distribute it to anyone else except as part of a product or
   7  * program developed by the user.
   8  *
   9  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  10  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  11  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  12  *
  13  * Sun RPC is provided with no support and without any obligation on the
  14  * part of Sun Microsystems, Inc. to assist in its use, correction,
  15  * modification or enhancement.
  16  *
  17  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  18  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  19  * OR ANY PART THEREOF.
  20  *
  21  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  22  * or profits or other special, indirect and consequential damages, even if
  23  * Sun has been advised of the possibility of such damages.
  24  *
  25  * Sun Microsystems, Inc.
  26  * 2550 Garcia Avenue
  27  * Mountain View, California  94043
  28  *
  29  * @(#)svc_raw.c 1.25 89/01/31 Copyr 1984 Sun Micro
  30  * @(#)svc_raw.c        1.16    94/04/24 SMI
  31  * $NetBSD: svc_raw.c,v 1.14 2000/07/06 03:10:35 christos Exp $
  32  * $FreeBSD: src/lib/libc/rpc/svc_raw.c,v 1.15 2006/02/27 22:10:59 deischen Exp $
  33  * $DragonFly: src/lib/libc/rpc/svc_raw.c,v 1.4 2005/11/13 12:27:04 swildner Exp $
  34  */
  35 /*
  36  * Copyright (c) 1986-1991 by Sun Microsystems Inc.
  37  */
  38
  39 /*
  40  * svc_raw.c,   This a toy for simple testing and timing.
  41  * Interface to create an rpc client and server in the same UNIX process.
  42  * This lets us similate rpc and get rpc (round trip) overhead, without
  43  * any interference from the kernel.
  44  *
  45  */
  46
  47 #include "namespace.h"
  48 #include "reentrant.h"
  49 #include <rpc/rpc.h>
  50 #include <sys/types.h>
  51 #include <rpc/raw.h>
  52 #include <stdlib.h>
  53 #include "un-namespace.h"
  54 #include "mt_misc.h"
  55
  56 #ifndef UDPMSGSIZE
  57 #define UDPMSGSIZE 8800
  58 #endif
  59
  60 /*
  61  * This is the "network" that we will be moving data over
  62  */
  63 static struct svc_raw_private {
  64         char    *raw_buf;       /* should be shared with the cl handle */
  65         SVCXPRT server;
  66         XDR     xdr_stream;
  67         char    verf_body[MAX_AUTH_BYTES];
  68 } *svc_raw_private;
  69
  70 static enum xprt_stat svc_raw_stat(SVCXPRT *);
  71 static bool_t svc_raw_recv(SVCXPRT *, struct rpc_msg *);
  72 static bool_t svc_raw_reply(SVCXPRT *, struct rpc_msg *);
  73 static bool_t svc_raw_getargs(SVCXPRT *, xdrproc_t, void *);
  74 static bool_t svc_raw_freeargs(SVCXPRT *, xdrproc_t, void *);
  75 static void svc_raw_destroy(SVCXPRT *);
  76 static void svc_raw_ops(SVCXPRT *);
  77 static bool_t svc_raw_control(SVCXPRT *, const u_int, void *);
  78
  79 char *__rpc_rawcombuf = NULL;
  80
  81 SVCXPRT *
  82 svc_raw_create(void)
  83 {
  84         struct svc_raw_private *srp;
  85 /* VARIABLES PROTECTED BY svcraw_lock: svc_raw_private, srp */
  86
  87         mutex_lock(&svcraw_lock);
  88         srp = svc_raw_private;
  89         if (srp == NULL) {
  90                 srp = (struct svc_raw_private *)calloc(1, sizeof (*srp));
  91                 if (srp == NULL) {
  92                         mutex_unlock(&svcraw_lock);
  93                         return (NULL);
  94                 }
  95                 if (__rpc_rawcombuf == NULL)
  96                         __rpc_rawcombuf = calloc(UDPMSGSIZE, sizeof (char));
  97                 srp->raw_buf = __rpc_rawcombuf; /* Share it with the client */
  98                 svc_raw_private = srp;
  99         }
 100         srp->server.xp_fd = FD_SETSIZE;
 101         srp->server.xp_port = 0;
 102         srp->server.xp_p3 = NULL;
 103         svc_raw_ops(&srp->server);
 104         srp->server.xp_verf.oa_base = srp->verf_body;
 105         xdrmem_create(&srp->xdr_stream, srp->raw_buf, UDPMSGSIZE, XDR_DECODE);
 106         xprt_register(&srp->server);
 107         mutex_unlock(&svcraw_lock);
 108         return (&srp->server);
 109 }
 110
 111 /*ARGSUSED*/
 112 static enum xprt_stat
 113 svc_raw_stat(SVCXPRT *xprt)
 114 {
 115         return (XPRT_IDLE);
 116 }
 117
 118 /*ARGSUSED*/
 119 static bool_t
 120 svc_raw_recv(SVCXPRT *xprt, struct rpc_msg *msg)
 121 {
 122         struct svc_raw_private *srp;
 123         XDR *xdrs;
 124
 125         mutex_lock(&svcraw_lock);
 126         srp = svc_raw_private;
 127         if (srp == NULL) {
 128                 mutex_unlock(&svcraw_lock);
 129                 return (FALSE);
 130         }
 131         mutex_unlock(&svcraw_lock);
 132
 133         xdrs = &srp->xdr_stream;
 134         xdrs->x_op = XDR_DECODE;
 135         XDR_SETPOS(xdrs, 0);
 136         if (! xdr_callmsg(xdrs, msg)) {
 137                 return (FALSE);
 138         }
 139         return (TRUE);
 140 }
 141
 142 /*ARGSUSED*/
 143 static bool_t
 144 svc_raw_reply(SVCXPRT *xprt, struct rpc_msg *msg)
 145 {
 146         struct svc_raw_private *srp;
 147         XDR *xdrs;
 148
 149         mutex_lock(&svcraw_lock);
 150         srp = svc_raw_private;
 151         if (srp == NULL) {
 152                 mutex_unlock(&svcraw_lock);
 153                 return (FALSE);
 154         }
 155         mutex_unlock(&svcraw_lock);
 156
 157         xdrs = &srp->xdr_stream;
 158         xdrs->x_op = XDR_ENCODE;
 159         XDR_SETPOS(xdrs, 0);
 160         if (! xdr_replymsg(xdrs, msg)) {
 161                 return (FALSE);
 162         }
 163         XDR_GETPOS(xdrs);  /* called just for overhead */
 164         return (TRUE);
 165 }
 166
 167 /*ARGSUSED*/
 168 static bool_t
 169 svc_raw_getargs(SVCXPRT *xprt, xdrproc_t xdr_args, void *args_ptr)
 170 {
 171         struct svc_raw_private *srp;
 172
 173         mutex_lock(&svcraw_lock);
 174         srp = svc_raw_private;
 175         if (srp == NULL) {
 176                 mutex_unlock(&svcraw_lock);
 177                 return (FALSE);
 178         }
 179         mutex_unlock(&svcraw_lock);
 180         return (*xdr_args)(&srp->xdr_stream, args_ptr);
 181 }
 182
 183 /*ARGSUSED*/
 184 static bool_t
 185 svc_raw_freeargs(SVCXPRT *xprt, xdrproc_t xdr_args, void *args_ptr)
 186 {
 187         struct svc_raw_private *srp;
 188         XDR *xdrs;
 189
 190         mutex_lock(&svcraw_lock);
 191         srp = svc_raw_private;
 192         if (srp == NULL) {
 193                 mutex_unlock(&svcraw_lock);
 194                 return (FALSE);
 195         }
 196         mutex_unlock(&svcraw_lock);
 197
 198         xdrs = &srp->xdr_stream;
 199         xdrs->x_op = XDR_FREE;
 200         return (*xdr_args)(xdrs, args_ptr);
 201 }
 202
 203 /*ARGSUSED*/
 204 static void
 205 svc_raw_destroy(SVCXPRT *xprt)
 206 {
 207 }
 208
 209 /*ARGSUSED*/
 210 static bool_t
 211 svc_raw_control(SVCXPRT *xprt, const u_int rq, void *in)
 212 {
 213         return (FALSE);
 214 }
 215
 216 static void
 217 svc_raw_ops(SVCXPRT *xprt)
 218 {
 219         static struct xp_ops ops;
 220         static struct xp_ops2 ops2;
 221
 222 /* VARIABLES PROTECTED BY ops_lock: ops */
 223
 224         mutex_lock(&ops_lock);
 225         if (ops.xp_recv == NULL) {
 226                 ops.xp_recv = svc_raw_recv;
 227                 ops.xp_stat = svc_raw_stat;
 228                 ops.xp_getargs = svc_raw_getargs;
 229                 ops.xp_reply = svc_raw_reply;
 230                 ops.xp_freeargs = svc_raw_freeargs;
 231                 ops.xp_destroy = svc_raw_destroy;
 232                 ops2.xp_control = svc_raw_control;
 233         }
 234         xprt->xp_ops = &ops;
 235         xprt->xp_ops2 = &ops2;
 236         mutex_unlock(&ops_lock);
 237 }