The Design and Implementation of the FreeBSD Operating System, Second Edition
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sys/rpc/svc.h

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    1 /*      $NetBSD: svc.h,v 1.17 2000/06/02 22:57:56 fvdl 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, MERCHANTABILITY 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  *      from: @(#)svc.h 1.35 88/12/17 SMI
   32  *      from: @(#)svc.h      1.27    94/04/25 SMI
   33  * $FreeBSD$
   34  */
   35 
   36 /*
   37  * svc.h, Server-side remote procedure call interface.
   38  *
   39  * Copyright (C) 1986-1993 by Sun Microsystems, Inc.
   40  */
   41 
   42 #ifndef _RPC_SVC_H
   43 #define _RPC_SVC_H
   44 #include <sys/cdefs.h>
   45 
   46 #ifdef _KERNEL
   47 #include <sys/queue.h>
   48 #include <sys/_lock.h>
   49 #include <sys/_mutex.h>
   50 #endif
   51 
   52 /*
   53  * This interface must manage two items concerning remote procedure calling:
   54  *
   55  * 1) An arbitrary number of transport connections upon which rpc requests
   56  * are received.  The two most notable transports are TCP and UDP;  they are
   57  * created and registered by routines in svc_tcp.c and svc_udp.c, respectively;
   58  * they in turn call xprt_register and xprt_unregister.
   59  *
   60  * 2) An arbitrary number of locally registered services.  Services are
   61  * described by the following four data: program number, version number,
   62  * "service dispatch" function, a transport handle, and a boolean that
   63  * indicates whether or not the exported program should be registered with a
   64  * local binder service;  if true the program's number and version and the
   65  * port number from the transport handle are registered with the binder.
   66  * These data are registered with the rpc svc system via svc_register.
   67  *
   68  * A service's dispatch function is called whenever an rpc request comes in
   69  * on a transport.  The request's program and version numbers must match
   70  * those of the registered service.  The dispatch function is passed two
   71  * parameters, struct svc_req * and SVCXPRT *, defined below.
   72  */
   73 
   74 /*
   75  *      Service control requests
   76  */
   77 #define SVCGET_VERSQUIET        1
   78 #define SVCSET_VERSQUIET        2
   79 #define SVCGET_CONNMAXREC       3
   80 #define SVCSET_CONNMAXREC       4
   81 
   82 /*
   83  * Operations for rpc_control().
   84  */
   85 #define RPC_SVC_CONNMAXREC_SET  0       /* set max rec size, enable nonblock */
   86 #define RPC_SVC_CONNMAXREC_GET  1
   87 
   88 enum xprt_stat {
   89         XPRT_DIED,
   90         XPRT_MOREREQS,
   91         XPRT_IDLE
   92 };
   93 
   94 struct __rpc_svcxprt;
   95 
   96 struct xp_ops {
   97         /* receive incoming requests */
   98         bool_t  (*xp_recv)(struct __rpc_svcxprt *, struct rpc_msg *);
   99         /* get transport status */
  100         enum xprt_stat (*xp_stat)(struct __rpc_svcxprt *);
  101         /* get arguments */
  102         bool_t  (*xp_getargs)(struct __rpc_svcxprt *, xdrproc_t, void *);
  103         /* send reply */
  104         bool_t  (*xp_reply)(struct __rpc_svcxprt *, struct rpc_msg *);
  105         /* free mem allocated for args */
  106         bool_t  (*xp_freeargs)(struct __rpc_svcxprt *, xdrproc_t, void *);
  107         /* destroy this struct */
  108         void    (*xp_destroy)(struct __rpc_svcxprt *);
  109 #ifdef _KERNEL
  110         /* catch-all function */
  111         bool_t  (*xp_control)(struct __rpc_svcxprt *, const u_int, void *);
  112 #endif
  113 };
  114 
  115 #ifndef _KERNEL
  116 struct xp_ops2 {
  117         /* catch-all function */
  118         bool_t  (*xp_control)(struct __rpc_svcxprt *, const u_int, void *);
  119 };
  120 #endif
  121 
  122 #ifdef _KERNEL
  123 struct __rpc_svcpool;
  124 #endif
  125 
  126 /*
  127  * Server side transport handle
  128  */
  129 typedef struct __rpc_svcxprt {
  130 #ifdef _KERNEL
  131         struct mtx      xp_lock;
  132         struct __rpc_svcpool *xp_pool;  /* owning pool (see below) */
  133         TAILQ_ENTRY(__rpc_svcxprt) xp_link;
  134         TAILQ_ENTRY(__rpc_svcxprt) xp_alink;
  135         bool_t          xp_registered;  /* xprt_register has been called */
  136         bool_t          xp_active;      /* xprt_active has been called */
  137         struct socket*  xp_socket;
  138         const struct xp_ops *xp_ops;
  139         char            *xp_netid;      /* network token */
  140         struct netbuf   xp_ltaddr;      /* local transport address */
  141         struct netbuf   xp_rtaddr;      /* remote transport address */
  142         struct opaque_auth xp_verf;     /* raw response verifier */
  143         uint32_t        xp_xid;         /* current transaction ID */
  144         XDR             xp_xdrreq;      /* xdr stream for decoding request */
  145         XDR             xp_xdrrep;      /* xdr stream for encoding reply */
  146         void            *xp_p1;         /* private: for use by svc ops */
  147         void            *xp_p2;         /* private: for use by svc ops */
  148         void            *xp_p3;         /* private: for use by svc lib */
  149         int             xp_type;        /* transport type */
  150 #else
  151         int             xp_fd;
  152         u_short         xp_port;         /* associated port number */
  153         const struct xp_ops *xp_ops;
  154         int             xp_addrlen;      /* length of remote address */
  155         struct sockaddr_in xp_raddr;     /* remote addr. (backward ABI compat) */
  156         /* XXX - fvdl stick this here for ABI backward compat reasons */
  157         const struct xp_ops2 *xp_ops2;
  158         char            *xp_tp;          /* transport provider device name */
  159         char            *xp_netid;       /* network token */
  160         struct netbuf   xp_ltaddr;       /* local transport address */
  161         struct netbuf   xp_rtaddr;       /* remote transport address */
  162         struct opaque_auth xp_verf;      /* raw response verifier */
  163         void            *xp_p1;          /* private: for use by svc ops */
  164         void            *xp_p2;          /* private: for use by svc ops */
  165         void            *xp_p3;          /* private: for use by svc lib */
  166         int             xp_type;         /* transport type */
  167 #endif
  168 } SVCXPRT;
  169 
  170 #ifdef _KERNEL
  171 
  172 /*
  173  * The services list
  174  * Each entry represents a set of procedures (an rpc program).
  175  * The dispatch routine takes request structs and runs the
  176  * apropriate procedure.
  177  */
  178 struct svc_callout {
  179         TAILQ_ENTRY(svc_callout) sc_link;
  180         rpcprog_t           sc_prog;
  181         rpcvers_t           sc_vers;
  182         char               *sc_netid;
  183         void                (*sc_dispatch)(struct svc_req *, SVCXPRT *);
  184 };
  185 TAILQ_HEAD(svc_callout_list, svc_callout);
  186 
  187 /*
  188  * In the kernel, we can't use global variables to store lists of
  189  * transports etc. since otherwise we could not have two unrelated RPC
  190  * services running, each on its own thread. We solve this by
  191  * importing a tiny part of a Solaris kernel concept, SVCPOOL.
  192  *
  193  * A service pool contains a set of transports and service callbacks
  194  * for a set of related RPC services. The pool handle should be passed
  195  * when creating new transports etc. Future work may include extending
  196  * this to support something similar to the Solaris multi-threaded RPC
  197  * server.
  198  */
  199 TAILQ_HEAD(svcxprt_list, __rpc_svcxprt);
  200 typedef struct __rpc_svcpool {
  201         struct mtx      sp_lock;        /* protect the transport lists */
  202         struct svcxprt_list sp_xlist;   /* all transports in the pool */
  203         struct svcxprt_list sp_active;  /* transports needing service */
  204         struct svc_callout_list sp_callouts; /* (prog,vers)->dispatch list */
  205         bool_t          sp_exited;      /* true if shutting down */
  206 } SVCPOOL;
  207 
  208 #endif
  209 
  210 /*
  211  * Service request
  212  */
  213 struct svc_req {
  214         uint32_t        rq_prog;        /* service program number */
  215         uint32_t        rq_vers;        /* service protocol version */
  216         uint32_t        rq_proc;        /* the desired procedure */
  217         struct opaque_auth rq_cred;     /* raw creds from the wire */
  218         void            *rq_clntcred;   /* read only cooked cred */
  219         SVCXPRT         *rq_xprt;       /* associated transport */
  220 };
  221 
  222 /*
  223  *  Approved way of getting address of caller
  224  */
  225 #define svc_getrpccaller(x) (&(x)->xp_rtaddr)
  226 
  227 /*
  228  * Operations defined on an SVCXPRT handle
  229  *
  230  * SVCXPRT              *xprt;
  231  * struct rpc_msg       *msg;
  232  * xdrproc_t             xargs;
  233  * void *                argsp;
  234  */
  235 #define SVC_RECV(xprt, msg)                             \
  236         (*(xprt)->xp_ops->xp_recv)((xprt), (msg))
  237 #define svc_recv(xprt, msg)                             \
  238         (*(xprt)->xp_ops->xp_recv)((xprt), (msg))
  239 
  240 #define SVC_STAT(xprt)                                  \
  241         (*(xprt)->xp_ops->xp_stat)(xprt)
  242 #define svc_stat(xprt)                                  \
  243         (*(xprt)->xp_ops->xp_stat)(xprt)
  244 
  245 #define SVC_GETARGS(xprt, xargs, argsp)                 \
  246         (*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp))
  247 #define svc_getargs(xprt, xargs, argsp)                 \
  248         (*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp))
  249 
  250 #define SVC_REPLY(xprt, msg)                            \
  251         (*(xprt)->xp_ops->xp_reply) ((xprt), (msg))
  252 #define svc_reply(xprt, msg)                            \
  253         (*(xprt)->xp_ops->xp_reply) ((xprt), (msg))
  254 
  255 #define SVC_FREEARGS(xprt, xargs, argsp)                \
  256         (*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp))
  257 #define svc_freeargs(xprt, xargs, argsp)                \
  258         (*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp))
  259 
  260 #define SVC_DESTROY(xprt)                               \
  261         (*(xprt)->xp_ops->xp_destroy)(xprt)
  262 #define svc_destroy(xprt)                               \
  263         (*(xprt)->xp_ops->xp_destroy)(xprt)
  264 
  265 #ifdef _KERNEL
  266 #define SVC_CONTROL(xprt, rq, in)                       \
  267         (*(xprt)->xp_ops->xp_control)((xprt), (rq), (in))
  268 #else
  269 #define SVC_CONTROL(xprt, rq, in)                       \
  270         (*(xprt)->xp_ops2->xp_control)((xprt), (rq), (in))
  271 #endif
  272 
  273 /*
  274  * Service registration
  275  *
  276  * svc_reg(xprt, prog, vers, dispatch, nconf)
  277  *      const SVCXPRT *xprt;
  278  *      const rpcprog_t prog;
  279  *      const rpcvers_t vers;
  280  *      const void (*dispatch)();
  281  *      const struct netconfig *nconf;
  282  */
  283 
  284 __BEGIN_DECLS
  285 extern bool_t   svc_reg(SVCXPRT *, const rpcprog_t, const rpcvers_t,
  286                         void (*)(struct svc_req *, SVCXPRT *),
  287                         const struct netconfig *);
  288 __END_DECLS
  289 
  290 /*
  291  * Service un-registration
  292  *
  293  * svc_unreg(prog, vers)
  294  *      const rpcprog_t prog;
  295  *      const rpcvers_t vers;
  296  */
  297 
  298 __BEGIN_DECLS
  299 #ifdef _KERNEL
  300 extern void     svc_unreg(SVCPOOL *, const rpcprog_t, const rpcvers_t);
  301 #else
  302 extern void     svc_unreg(const rpcprog_t, const rpcvers_t);
  303 #endif
  304 __END_DECLS
  305 
  306 /*
  307  * Transport registration.
  308  *
  309  * xprt_register(xprt)
  310  *      SVCXPRT *xprt;
  311  */
  312 __BEGIN_DECLS
  313 extern void     xprt_register(SVCXPRT *);
  314 __END_DECLS
  315 
  316 /*
  317  * Transport un-register
  318  *
  319  * xprt_unregister(xprt)
  320  *      SVCXPRT *xprt;
  321  */
  322 __BEGIN_DECLS
  323 extern void     xprt_unregister(SVCXPRT *);
  324 extern void     __xprt_unregister_unlocked(SVCXPRT *);
  325 __END_DECLS
  326 
  327 #ifdef _KERNEL
  328 
  329 /*
  330  * Called when a transport has pending requests.
  331  */
  332 __BEGIN_DECLS
  333 extern void     xprt_active(SVCXPRT *);
  334 extern void     xprt_inactive(SVCXPRT *);
  335 __END_DECLS
  336 
  337 #endif
  338 
  339 /*
  340  * When the service routine is called, it must first check to see if it
  341  * knows about the procedure;  if not, it should call svcerr_noproc
  342  * and return.  If so, it should deserialize its arguments via
  343  * SVC_GETARGS (defined above).  If the deserialization does not work,
  344  * svcerr_decode should be called followed by a return.  Successful
  345  * decoding of the arguments should be followed the execution of the
  346  * procedure's code and a call to svc_sendreply.
  347  *
  348  * Also, if the service refuses to execute the procedure due to too-
  349  * weak authentication parameters, svcerr_weakauth should be called.
  350  * Note: do not confuse access-control failure with weak authentication!
  351  *
  352  * NB: In pure implementations of rpc, the caller always waits for a reply
  353  * msg.  This message is sent when svc_sendreply is called.
  354  * Therefore pure service implementations should always call
  355  * svc_sendreply even if the function logically returns void;  use
  356  * xdr.h - xdr_void for the xdr routine.  HOWEVER, tcp based rpc allows
  357  * for the abuse of pure rpc via batched calling or pipelining.  In the
  358  * case of a batched call, svc_sendreply should NOT be called since
  359  * this would send a return message, which is what batching tries to avoid.
  360  * It is the service/protocol writer's responsibility to know which calls are
  361  * batched and which are not.  Warning: responding to batch calls may
  362  * deadlock the caller and server processes!
  363  */
  364 
  365 __BEGIN_DECLS
  366 extern bool_t   svc_sendreply(SVCXPRT *, xdrproc_t, void *);
  367 extern void     svcerr_decode(SVCXPRT *);
  368 extern void     svcerr_weakauth(SVCXPRT *);
  369 extern void     svcerr_noproc(SVCXPRT *);
  370 extern void     svcerr_progvers(SVCXPRT *, rpcvers_t, rpcvers_t);
  371 extern void     svcerr_auth(SVCXPRT *, enum auth_stat);
  372 extern void     svcerr_noprog(SVCXPRT *);
  373 extern void     svcerr_systemerr(SVCXPRT *);
  374 extern int      rpc_reg(rpcprog_t, rpcvers_t, rpcproc_t,
  375                         char *(*)(char *), xdrproc_t, xdrproc_t,
  376                         char *);
  377 __END_DECLS
  378 
  379 /*
  380  * Lowest level dispatching -OR- who owns this process anyway.
  381  * Somebody has to wait for incoming requests and then call the correct
  382  * service routine.  The routine svc_run does infinite waiting; i.e.,
  383  * svc_run never returns.
  384  * Since another (co-existant) package may wish to selectively wait for
  385  * incoming calls or other events outside of the rpc architecture, the
  386  * routine svc_getreq is provided.  It must be passed readfds, the
  387  * "in-place" results of a select system call (see select, section 2).
  388  */
  389 
  390 #ifndef _KERNEL
  391 /*
  392  * Global keeper of rpc service descriptors in use
  393  * dynamic; must be inspected before each call to select
  394  */
  395 extern int svc_maxfd;
  396 #ifdef FD_SETSIZE
  397 extern fd_set svc_fdset;
  398 #define svc_fds svc_fdset.fds_bits[0]   /* compatibility */
  399 #else
  400 extern int svc_fds;
  401 #endif /* def FD_SETSIZE */
  402 #endif
  403 
  404 /*
  405  * a small program implemented by the svc_rpc implementation itself;
  406  * also see clnt.h for protocol numbers.
  407  */
  408 __BEGIN_DECLS
  409 extern void rpctest_service(void);
  410 __END_DECLS
  411 
  412 __BEGIN_DECLS
  413 #ifndef _KERNEL
  414 extern void     svc_getreq(int);
  415 extern void     svc_getreqset(fd_set *);
  416 extern void     svc_getreq_common(int);
  417 struct pollfd;
  418 extern void     svc_getreq_poll(struct pollfd *, int);
  419 extern void     svc_run(void);
  420 extern void     svc_exit(void);
  421 #else
  422 extern void     svc_run(SVCPOOL *);
  423 extern void     svc_exit(SVCPOOL *);
  424 #endif
  425 __END_DECLS
  426 
  427 /*
  428  * Socket to use on svcxxx_create call to get default socket
  429  */
  430 #define RPC_ANYSOCK     -1
  431 #define RPC_ANYFD       RPC_ANYSOCK
  432 
  433 /*
  434  * These are the existing service side transport implementations
  435  */
  436 
  437 __BEGIN_DECLS
  438 
  439 #ifdef _KERNEL
  440 
  441 /*
  442  * Create a new service pool.
  443  */
  444 extern SVCPOOL* svcpool_create(void);
  445 
  446 /*
  447  * Destroy a service pool, including all registered transports.
  448  */
  449 extern void svcpool_destroy(SVCPOOL *pool);
  450 
  451 /*
  452  * Transport independent svc_create routine.
  453  */
  454 extern int svc_create(SVCPOOL *, void (*)(struct svc_req *, SVCXPRT *),
  455     const rpcprog_t, const rpcvers_t, const char *);
  456 /*
  457  *      void (*dispatch)();             -- dispatch routine
  458  *      const rpcprog_t prognum;        -- program number
  459  *      const rpcvers_t versnum;        -- version number
  460  *      const char *nettype;            -- network type
  461  */
  462 
  463 
  464 /*
  465  * Generic server creation routine. It takes a netconfig structure
  466  * instead of a nettype.
  467  */
  468 
  469 extern SVCXPRT *svc_tp_create(SVCPOOL *, void (*)(struct svc_req *, SVCXPRT *),
  470     const rpcprog_t, const rpcvers_t, const char *uaddr,
  471     const struct netconfig *);
  472         /*
  473          * void (*dispatch)();            -- dispatch routine
  474          * const rpcprog_t prognum;       -- program number
  475          * const rpcvers_t versnum;       -- version number
  476          * const char *uaddr;             -- universal address of service
  477          * const struct netconfig *nconf; -- netconfig structure
  478          */
  479 
  480 extern SVCXPRT *svc_dg_create(SVCPOOL *, struct socket *,
  481     const size_t, const size_t);
  482         /*
  483          * struct socket *;                             -- open connection
  484          * const size_t sendsize;                        -- max send size
  485          * const size_t recvsize;                        -- max recv size
  486          */
  487 
  488 extern SVCXPRT *svc_vc_create(SVCPOOL *, struct socket *,
  489     const size_t, const size_t);
  490         /*
  491          * struct socket *;                             -- open connection
  492          * const size_t sendsize;                        -- max send size
  493          * const size_t recvsize;                        -- max recv size
  494          */
  495 
  496 /*
  497  * Generic TLI create routine
  498  */
  499 extern SVCXPRT *svc_tli_create(SVCPOOL *, struct socket *,
  500     const struct netconfig *, const struct t_bind *, const size_t, const size_t);
  501 /*
  502  *      struct socket * so;             -- connection end point
  503  *      const struct netconfig *nconf;  -- netconfig structure for network
  504  *      const struct t_bind *bindaddr;  -- local bind address
  505  *      const size_t sendsz;             -- max sendsize
  506  *      const size_t recvsz;             -- max recvsize
  507  */
  508 
  509 #else /* !_KERNEL */
  510 
  511 /*
  512  * Transport independent svc_create routine.
  513  */
  514 extern int svc_create(void (*)(struct svc_req *, SVCXPRT *),
  515                            const rpcprog_t, const rpcvers_t, const char *);
  516 /*
  517  *      void (*dispatch)();             -- dispatch routine
  518  *      const rpcprog_t prognum;        -- program number
  519  *      const rpcvers_t versnum;        -- version number
  520  *      const char *nettype;            -- network type
  521  */
  522 
  523 
  524 /*
  525  * Generic server creation routine. It takes a netconfig structure
  526  * instead of a nettype.
  527  */
  528 
  529 extern SVCXPRT *svc_tp_create(void (*)(struct svc_req *, SVCXPRT *),
  530                                    const rpcprog_t, const rpcvers_t,
  531                                    const struct netconfig *);
  532         /*
  533          * void (*dispatch)();            -- dispatch routine
  534          * const rpcprog_t prognum;       -- program number
  535          * const rpcvers_t versnum;       -- version number
  536          * const struct netconfig *nconf; -- netconfig structure
  537          */
  538 
  539 /*
  540  * Generic TLI create routine
  541  */
  542 extern SVCXPRT *svc_tli_create(const int, const struct netconfig *,
  543                                const struct t_bind *, const u_int,
  544                                const u_int);
  545 /*
  546  *      const int fd;                   -- connection end point
  547  *      const struct netconfig *nconf;  -- netconfig structure for network
  548  *      const struct t_bind *bindaddr;  -- local bind address
  549  *      const u_int sendsz;             -- max sendsize
  550  *      const u_int recvsz;             -- max recvsize
  551  */
  552 
  553 /*
  554  * Connectionless and connectionful create routines
  555  */
  556 
  557 extern SVCXPRT *svc_vc_create(const int, const u_int, const u_int);
  558 /*
  559  *      const int fd;                           -- open connection end point
  560  *      const u_int sendsize;                   -- max send size
  561  *      const u_int recvsize;                   -- max recv size
  562  */
  563 
  564 /*
  565  * Added for compatibility to old rpc 4.0. Obsoleted by svc_vc_create().
  566  */
  567 extern SVCXPRT *svcunix_create(int, u_int, u_int, char *);
  568 
  569 extern SVCXPRT *svc_dg_create(const int, const u_int, const u_int);
  570         /*
  571          * const int fd;                                -- open connection
  572          * const u_int sendsize;                        -- max send size
  573          * const u_int recvsize;                        -- max recv size
  574          */
  575 
  576 
  577 /*
  578  * the routine takes any *open* connection
  579  * descriptor as its first input and is used for open connections.
  580  */
  581 extern SVCXPRT *svc_fd_create(const int, const u_int, const u_int);
  582 /*
  583  *      const int fd;                           -- open connection end point
  584  *      const u_int sendsize;                   -- max send size
  585  *      const u_int recvsize;                   -- max recv size
  586  */
  587 
  588 /*
  589  * Added for compatibility to old rpc 4.0. Obsoleted by svc_fd_create().
  590  */
  591 extern SVCXPRT *svcunixfd_create(int, u_int, u_int);
  592 
  593 /*
  594  * Memory based rpc (for speed check and testing)
  595  */
  596 extern SVCXPRT *svc_raw_create(void);
  597 
  598 /*
  599  * svc_dg_enable_cache() enables the cache on dg transports.
  600  */
  601 int svc_dg_enablecache(SVCXPRT *, const u_int);
  602 
  603 int __rpc_get_local_uid(SVCXPRT *_transp, uid_t *_uid);
  604 
  605 #endif  /* !_KERNEL */
  606 
  607 __END_DECLS
  608 
  609 #ifndef _KERNEL
  610 /* for backward compatibility */
  611 #include <rpc/svc_soc.h>
  612 #endif
  613 
  614 #endif /* !_RPC_SVC_H */

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