clnt_raw.c revision 1.28.18.1
1 /* $NetBSD: clnt_raw.c,v 1.28.18.1 2008/05/18 12:30:18 yamt 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 #include <sys/cdefs.h> 33 #if defined(LIBC_SCCS) && !defined(lint) 34 #if 0 35 static char *sccsid = "@(#)clnt_raw.c 1.22 87/08/11 Copyr 1984 Sun Micro"; 36 static char *sccsid = "@(#)clnt_raw.c 2.2 88/08/01 4.0 RPCSRC"; 37 #else 38 __RCSID("$NetBSD: clnt_raw.c,v 1.28.18.1 2008/05/18 12:30:18 yamt Exp $"); 39 #endif 40 #endif 41 42 /* 43 * clnt_raw.c 44 * 45 * Copyright (C) 1984, Sun Microsystems, Inc. 46 * 47 * Memory based rpc for simple testing and timing. 48 * Interface to create an rpc client and server in the same process. 49 * This lets us similate rpc and get round trip overhead, without 50 * any interference from the kernel. 51 */ 52 53 #include "namespace.h" 54 #include "reentrant.h" 55 #include <assert.h> 56 #include <err.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 60 #include <rpc/rpc.h> 61 #include <rpc/raw.h> 62 63 #ifdef __weak_alias 64 __weak_alias(clntraw_create,_clntraw_create) 65 __weak_alias(clnt_raw_create,_clnt_raw_create) 66 #endif 67 68 #ifdef _REENTRANT 69 extern mutex_t clntraw_lock; 70 #endif 71 72 #define MCALL_MSG_SIZE 24 73 74 /* 75 * This is the "network" we will be moving stuff over. 76 */ 77 static struct clntraw_private { 78 CLIENT client_object; 79 XDR xdr_stream; 80 char *_raw_buf; 81 union { 82 struct rpc_msg mashl_rpcmsg; 83 char mashl_callmsg[MCALL_MSG_SIZE]; 84 } u; 85 u_int mcnt; 86 } *clntraw_private; 87 88 static enum clnt_stat clnt_raw_call __P((CLIENT *, rpcproc_t, xdrproc_t, 89 const char *, xdrproc_t, caddr_t, struct timeval)); 90 static void clnt_raw_geterr __P((CLIENT *, struct rpc_err *)); 91 static bool_t clnt_raw_freeres __P((CLIENT *, xdrproc_t, caddr_t)); 92 static void clnt_raw_abort __P((CLIENT *)); 93 static bool_t clnt_raw_control __P((CLIENT *, u_int, char *)); 94 static void clnt_raw_destroy __P((CLIENT *)); 95 static struct clnt_ops *clnt_raw_ops __P((void)); 96 97 /* 98 * Create a client handle for memory based rpc. 99 */ 100 CLIENT * 101 clnt_raw_create(prog, vers) 102 rpcprog_t prog; 103 rpcvers_t vers; 104 { 105 struct clntraw_private *clp = clntraw_private; 106 struct rpc_msg call_msg; 107 XDR *xdrs = &clp->xdr_stream; 108 CLIENT *client = &clp->client_object; 109 110 mutex_lock(&clntraw_lock); 111 if (clp == NULL) { 112 clp = calloc((size_t)1, sizeof (*clp)); 113 if (clp == NULL) 114 goto out; 115 if (__rpc_rawcombuf == NULL) 116 __rpc_rawcombuf = 117 malloc(UDPMSGSIZE); 118 if (__rpc_rawcombuf == NULL) 119 goto out; 120 clp->_raw_buf = __rpc_rawcombuf; 121 clntraw_private = clp; 122 } 123 /* 124 * pre-serialize the static part of the call msg and stash it away 125 */ 126 call_msg.rm_direction = CALL; 127 call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; 128 /* XXX: prog and vers have been long historically :-( */ 129 call_msg.rm_call.cb_prog = (u_int32_t)prog; 130 call_msg.rm_call.cb_vers = (u_int32_t)vers; 131 xdrmem_create(xdrs, clp->u.mashl_callmsg, MCALL_MSG_SIZE, XDR_ENCODE); 132 if (! xdr_callhdr(xdrs, &call_msg)) 133 warnx("clntraw_create - Fatal header serialization error."); 134 clp->mcnt = XDR_GETPOS(xdrs); 135 XDR_DESTROY(xdrs); 136 137 /* 138 * Set xdrmem for client/server shared buffer 139 */ 140 xdrmem_create(xdrs, clp->_raw_buf, UDPMSGSIZE, XDR_FREE); 141 142 /* 143 * create client handle 144 */ 145 client->cl_ops = clnt_raw_ops(); 146 client->cl_auth = authnone_create(); 147 mutex_unlock(&clntraw_lock); 148 return (client); 149 out: 150 if (clp) 151 free(clp); 152 mutex_unlock(&clntraw_lock); 153 return NULL; 154 155 } 156 157 /* ARGSUSED */ 158 static enum clnt_stat 159 clnt_raw_call(h, proc, xargs, argsp, xresults, resultsp, timeout) 160 CLIENT *h; 161 rpcproc_t proc; 162 xdrproc_t xargs; 163 const char *argsp; 164 xdrproc_t xresults; 165 caddr_t resultsp; 166 struct timeval timeout; 167 { 168 struct clntraw_private *clp = clntraw_private; 169 XDR *xdrs = &clp->xdr_stream; 170 struct rpc_msg msg; 171 enum clnt_stat status; 172 struct rpc_err error; 173 174 _DIAGASSERT(h != NULL); 175 176 mutex_lock(&clntraw_lock); 177 if (clp == NULL) { 178 mutex_unlock(&clntraw_lock); 179 return (RPC_FAILED); 180 } 181 mutex_unlock(&clntraw_lock); 182 183 call_again: 184 /* 185 * send request 186 */ 187 xdrs->x_op = XDR_ENCODE; 188 XDR_SETPOS(xdrs, 0); 189 clp->u.mashl_rpcmsg.rm_xid ++ ; 190 if ((! XDR_PUTBYTES(xdrs, clp->u.mashl_callmsg, clp->mcnt)) || 191 (! XDR_PUTINT32(xdrs, (int32_t *)&proc)) || 192 (! AUTH_MARSHALL(h->cl_auth, xdrs)) || 193 (! (*xargs)(xdrs, __UNCONST(argsp)))) { 194 return (RPC_CANTENCODEARGS); 195 } 196 (void)XDR_GETPOS(xdrs); /* called just to cause overhead */ 197 198 /* 199 * We have to call server input routine here because this is 200 * all going on in one process. Yuk. 201 */ 202 svc_getreq_common(FD_SETSIZE); 203 204 /* 205 * get results 206 */ 207 xdrs->x_op = XDR_DECODE; 208 XDR_SETPOS(xdrs, 0); 209 msg.acpted_rply.ar_verf = _null_auth; 210 msg.acpted_rply.ar_results.where = resultsp; 211 msg.acpted_rply.ar_results.proc = xresults; 212 if (! xdr_replymsg(xdrs, &msg)) { 213 /* 214 * It's possible for xdr_replymsg() to fail partway 215 * through its attempt to decode the result from the 216 * server. If this happens, it will leave the reply 217 * structure partially populated with dynamically 218 * allocated memory. (This can happen if someone uses 219 * clntudp_bufcreate() to create a CLIENT handle and 220 * specifies a receive buffer size that is too small.) 221 * This memory must be free()ed to avoid a leak. 222 */ 223 int op = xdrs->x_op; 224 xdrs->x_op = XDR_FREE; 225 xdr_replymsg(xdrs, &msg); 226 xdrs->x_op = op; 227 return (RPC_CANTDECODERES); 228 } 229 _seterr_reply(&msg, &error); 230 status = error.re_status; 231 232 if (status == RPC_SUCCESS) { 233 if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) { 234 status = RPC_AUTHERROR; 235 } 236 } /* end successful completion */ 237 else { 238 if (AUTH_REFRESH(h->cl_auth)) 239 goto call_again; 240 } /* end of unsuccessful completion */ 241 242 if (status == RPC_SUCCESS) { 243 if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) { 244 status = RPC_AUTHERROR; 245 } 246 if (msg.acpted_rply.ar_verf.oa_base != NULL) { 247 xdrs->x_op = XDR_FREE; 248 (void)xdr_opaque_auth(xdrs, &(msg.acpted_rply.ar_verf)); 249 } 250 } 251 252 return (status); 253 } 254 255 /*ARGSUSED*/ 256 static void 257 clnt_raw_geterr(cl, error) 258 CLIENT *cl; 259 struct rpc_err *error; 260 { 261 } 262 263 264 /* ARGSUSED */ 265 static bool_t 266 clnt_raw_freeres(cl, xdr_res, res_ptr) 267 CLIENT *cl; 268 xdrproc_t xdr_res; 269 caddr_t res_ptr; 270 { 271 struct clntraw_private *clp = clntraw_private; 272 XDR *xdrs = &clp->xdr_stream; 273 bool_t rval; 274 275 mutex_lock(&clntraw_lock); 276 if (clp == NULL) { 277 rval = (bool_t) RPC_FAILED; 278 mutex_unlock(&clntraw_lock); 279 return (rval); 280 } 281 mutex_unlock(&clntraw_lock); 282 xdrs->x_op = XDR_FREE; 283 return ((*xdr_res)(xdrs, res_ptr)); 284 } 285 286 /*ARGSUSED*/ 287 static void 288 clnt_raw_abort(cl) 289 CLIENT *cl; 290 { 291 } 292 293 /*ARGSUSED*/ 294 static bool_t 295 clnt_raw_control(cl, ui, str) 296 CLIENT *cl; 297 u_int ui; 298 char *str; 299 { 300 return (FALSE); 301 } 302 303 /*ARGSUSED*/ 304 static void 305 clnt_raw_destroy(cl) 306 CLIENT *cl; 307 { 308 } 309 310 static struct clnt_ops * 311 clnt_raw_ops() 312 { 313 static struct clnt_ops ops; 314 #ifdef _REENTRANT 315 extern mutex_t ops_lock; 316 #endif 317 318 /* VARIABLES PROTECTED BY ops_lock: ops */ 319 320 mutex_lock(&ops_lock); 321 if (ops.cl_call == NULL) { 322 ops.cl_call = clnt_raw_call; 323 ops.cl_abort = clnt_raw_abort; 324 ops.cl_geterr = clnt_raw_geterr; 325 ops.cl_freeres = clnt_raw_freeres; 326 ops.cl_destroy = clnt_raw_destroy; 327 ops.cl_control = clnt_raw_control; 328 } 329 mutex_unlock(&ops_lock); 330 return (&ops); 331 } 332
Indexes created Sun Sep 28 12:09:53 GMT 2025