ea3d7030c0
is based on an old implementation from the University of Michigan with lots of changes and fixes by me and the addition of a Solaris-compatible API. Sponsored by: Isilon Systems Reviewed by: alfred
475 lines
14 KiB
C
475 lines
14 KiB
C
/* $NetBSD: svc.h,v 1.17 2000/06/02 22:57:56 fvdl Exp $ */
|
|
|
|
/*
|
|
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
|
|
* unrestricted use provided that this legend is included on all tape
|
|
* media and as a part of the software program in whole or part. Users
|
|
* may copy or modify Sun RPC without charge, but are not authorized
|
|
* to license or distribute it to anyone else except as part of a product or
|
|
* program developed by the user.
|
|
*
|
|
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
|
|
* WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
|
|
*
|
|
* Sun RPC is provided with no support and without any obligation on the
|
|
* part of Sun Microsystems, Inc. to assist in its use, correction,
|
|
* modification or enhancement.
|
|
*
|
|
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
|
|
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
|
|
* OR ANY PART THEREOF.
|
|
*
|
|
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
|
|
* or profits or other special, indirect and consequential damages, even if
|
|
* Sun has been advised of the possibility of such damages.
|
|
*
|
|
* Sun Microsystems, Inc.
|
|
* 2550 Garcia Avenue
|
|
* Mountain View, California 94043
|
|
*
|
|
* from: @(#)svc.h 1.35 88/12/17 SMI
|
|
* from: @(#)svc.h 1.27 94/04/25 SMI
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* svc.h, Server-side remote procedure call interface.
|
|
*
|
|
* Copyright (C) 1986-1993 by Sun Microsystems, Inc.
|
|
*/
|
|
|
|
#ifndef _RPC_SVC_H
|
|
#define _RPC_SVC_H
|
|
#include <sys/cdefs.h>
|
|
|
|
/*
|
|
* This interface must manage two items concerning remote procedure calling:
|
|
*
|
|
* 1) An arbitrary number of transport connections upon which rpc requests
|
|
* are received. The two most notable transports are TCP and UDP; they are
|
|
* created and registered by routines in svc_tcp.c and svc_udp.c, respectively;
|
|
* they in turn call xprt_register and xprt_unregister.
|
|
*
|
|
* 2) An arbitrary number of locally registered services. Services are
|
|
* described by the following four data: program number, version number,
|
|
* "service dispatch" function, a transport handle, and a boolean that
|
|
* indicates whether or not the exported program should be registered with a
|
|
* local binder service; if true the program's number and version and the
|
|
* port number from the transport handle are registered with the binder.
|
|
* These data are registered with the rpc svc system via svc_register.
|
|
*
|
|
* A service's dispatch function is called whenever an rpc request comes in
|
|
* on a transport. The request's program and version numbers must match
|
|
* those of the registered service. The dispatch function is passed two
|
|
* parameters, struct svc_req * and SVCXPRT *, defined below.
|
|
*/
|
|
|
|
/*
|
|
* Service control requests
|
|
*/
|
|
#define SVCGET_VERSQUIET 1
|
|
#define SVCSET_VERSQUIET 2
|
|
#define SVCGET_CONNMAXREC 3
|
|
#define SVCSET_CONNMAXREC 4
|
|
|
|
/*
|
|
* Operations for rpc_control().
|
|
*/
|
|
#define RPC_SVC_CONNMAXREC_SET 0 /* set max rec size, enable nonblock */
|
|
#define RPC_SVC_CONNMAXREC_GET 1
|
|
|
|
enum xprt_stat {
|
|
XPRT_DIED,
|
|
XPRT_MOREREQS,
|
|
XPRT_IDLE
|
|
};
|
|
|
|
/*
|
|
* Server side transport handle
|
|
*/
|
|
typedef struct __rpc_svcxprt {
|
|
int xp_fd;
|
|
u_short xp_port; /* associated port number */
|
|
const struct xp_ops {
|
|
/* receive incoming requests */
|
|
bool_t (*xp_recv)(struct __rpc_svcxprt *, struct rpc_msg *);
|
|
/* get transport status */
|
|
enum xprt_stat (*xp_stat)(struct __rpc_svcxprt *);
|
|
/* get arguments */
|
|
bool_t (*xp_getargs)(struct __rpc_svcxprt *, xdrproc_t,
|
|
void *);
|
|
/* send reply */
|
|
bool_t (*xp_reply)(struct __rpc_svcxprt *, struct rpc_msg *);
|
|
/* free mem allocated for args */
|
|
bool_t (*xp_freeargs)(struct __rpc_svcxprt *, xdrproc_t,
|
|
void *);
|
|
/* destroy this struct */
|
|
void (*xp_destroy)(struct __rpc_svcxprt *);
|
|
} *xp_ops;
|
|
int xp_addrlen; /* length of remote address */
|
|
struct sockaddr_in xp_raddr; /* remote addr. (backward ABI compat) */
|
|
/* XXX - fvdl stick this here for ABI backward compat reasons */
|
|
const struct xp_ops2 {
|
|
/* catch-all function */
|
|
bool_t (*xp_control)(struct __rpc_svcxprt *, const u_int,
|
|
void *);
|
|
} *xp_ops2;
|
|
char *xp_tp; /* transport provider device name */
|
|
char *xp_netid; /* network token */
|
|
struct netbuf xp_ltaddr; /* local transport address */
|
|
struct netbuf xp_rtaddr; /* remote transport address */
|
|
struct opaque_auth xp_verf; /* raw response verifier */
|
|
void *xp_p1; /* private: for use by svc ops */
|
|
void *xp_p2; /* private: for use by svc ops */
|
|
void *xp_p3; /* private: for use by svc lib */
|
|
int xp_type; /* transport type */
|
|
} SVCXPRT;
|
|
|
|
/*
|
|
* Interface to server-side authentication flavors.
|
|
*/
|
|
typedef struct __rpc_svcauth {
|
|
struct svc_auth_ops {
|
|
int (*svc_ah_wrap)(struct __rpc_svcauth *, XDR *,
|
|
xdrproc_t, caddr_t);
|
|
int (*svc_ah_unwrap)(struct __rpc_svcauth *, XDR *,
|
|
xdrproc_t, caddr_t);
|
|
} *svc_ah_ops;
|
|
void *svc_ah_private;
|
|
} SVCAUTH;
|
|
|
|
/*
|
|
* Server transport extensions (accessed via xp_p3).
|
|
*/
|
|
typedef struct __rpc_svcxprt_ext {
|
|
int xp_flags; /* versquiet */
|
|
SVCAUTH xp_auth; /* interface to auth methods */
|
|
} SVCXPRT_EXT;
|
|
|
|
/*
|
|
* Service request
|
|
*/
|
|
struct svc_req {
|
|
u_int32_t rq_prog; /* service program number */
|
|
u_int32_t rq_vers; /* service protocol version */
|
|
u_int32_t rq_proc; /* the desired procedure */
|
|
struct opaque_auth rq_cred; /* raw creds from the wire */
|
|
void *rq_clntcred; /* read only cooked cred */
|
|
SVCXPRT *rq_xprt; /* associated transport */
|
|
};
|
|
|
|
/*
|
|
* Approved way of getting address of caller
|
|
*/
|
|
#define svc_getrpccaller(x) (&(x)->xp_rtaddr)
|
|
|
|
/*
|
|
* Operations defined on an SVCXPRT handle
|
|
*
|
|
* SVCXPRT *xprt;
|
|
* struct rpc_msg *msg;
|
|
* xdrproc_t xargs;
|
|
* void * argsp;
|
|
*/
|
|
#define SVC_RECV(xprt, msg) \
|
|
(*(xprt)->xp_ops->xp_recv)((xprt), (msg))
|
|
#define svc_recv(xprt, msg) \
|
|
(*(xprt)->xp_ops->xp_recv)((xprt), (msg))
|
|
|
|
#define SVC_STAT(xprt) \
|
|
(*(xprt)->xp_ops->xp_stat)(xprt)
|
|
#define svc_stat(xprt) \
|
|
(*(xprt)->xp_ops->xp_stat)(xprt)
|
|
|
|
#define SVC_GETARGS(xprt, xargs, argsp) \
|
|
(*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp))
|
|
#define svc_getargs(xprt, xargs, argsp) \
|
|
(*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp))
|
|
|
|
#define SVC_REPLY(xprt, msg) \
|
|
(*(xprt)->xp_ops->xp_reply) ((xprt), (msg))
|
|
#define svc_reply(xprt, msg) \
|
|
(*(xprt)->xp_ops->xp_reply) ((xprt), (msg))
|
|
|
|
#define SVC_FREEARGS(xprt, xargs, argsp) \
|
|
(*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp))
|
|
#define svc_freeargs(xprt, xargs, argsp) \
|
|
(*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp))
|
|
|
|
#define SVC_DESTROY(xprt) \
|
|
(*(xprt)->xp_ops->xp_destroy)(xprt)
|
|
#define svc_destroy(xprt) \
|
|
(*(xprt)->xp_ops->xp_destroy)(xprt)
|
|
|
|
#define SVC_CONTROL(xprt, rq, in) \
|
|
(*(xprt)->xp_ops2->xp_control)((xprt), (rq), (in))
|
|
|
|
#define SVC_EXT(xprt) \
|
|
((SVCXPRT_EXT *) xprt->xp_p3)
|
|
|
|
#define SVC_AUTH(xprt) \
|
|
(SVC_EXT(xprt)->xp_auth)
|
|
|
|
/*
|
|
* Operations defined on an SVCAUTH handle
|
|
*/
|
|
#define SVCAUTH_WRAP(auth, xdrs, xfunc, xwhere) \
|
|
((auth)->svc_ah_ops->svc_ah_wrap(auth, xdrs, xfunc, xwhere))
|
|
#define SVCAUTH_UNWRAP(auth, xdrs, xfunc, xwhere) \
|
|
((auth)->svc_ah_ops->svc_ah_unwrap(auth, xdrs, xfunc, xwhere))
|
|
|
|
/*
|
|
* Service registration
|
|
*
|
|
* svc_reg(xprt, prog, vers, dispatch, nconf)
|
|
* const SVCXPRT *xprt;
|
|
* const rpcprog_t prog;
|
|
* const rpcvers_t vers;
|
|
* const void (*dispatch)();
|
|
* const struct netconfig *nconf;
|
|
*/
|
|
|
|
__BEGIN_DECLS
|
|
extern bool_t svc_reg(SVCXPRT *, const rpcprog_t, const rpcvers_t,
|
|
void (*)(struct svc_req *, SVCXPRT *),
|
|
const struct netconfig *);
|
|
__END_DECLS
|
|
|
|
/*
|
|
* Service un-registration
|
|
*
|
|
* svc_unreg(prog, vers)
|
|
* const rpcprog_t prog;
|
|
* const rpcvers_t vers;
|
|
*/
|
|
|
|
__BEGIN_DECLS
|
|
extern void svc_unreg(const rpcprog_t, const rpcvers_t);
|
|
__END_DECLS
|
|
|
|
/*
|
|
* Transport registration.
|
|
*
|
|
* xprt_register(xprt)
|
|
* SVCXPRT *xprt;
|
|
*/
|
|
__BEGIN_DECLS
|
|
extern void xprt_register(SVCXPRT *);
|
|
__END_DECLS
|
|
|
|
/*
|
|
* Transport un-register
|
|
*
|
|
* xprt_unregister(xprt)
|
|
* SVCXPRT *xprt;
|
|
*/
|
|
__BEGIN_DECLS
|
|
extern void xprt_unregister(SVCXPRT *);
|
|
__END_DECLS
|
|
|
|
|
|
/*
|
|
* When the service routine is called, it must first check to see if it
|
|
* knows about the procedure; if not, it should call svcerr_noproc
|
|
* and return. If so, it should deserialize its arguments via
|
|
* SVC_GETARGS (defined above). If the deserialization does not work,
|
|
* svcerr_decode should be called followed by a return. Successful
|
|
* decoding of the arguments should be followed the execution of the
|
|
* procedure's code and a call to svc_sendreply.
|
|
*
|
|
* Also, if the service refuses to execute the procedure due to too-
|
|
* weak authentication parameters, svcerr_weakauth should be called.
|
|
* Note: do not confuse access-control failure with weak authentication!
|
|
*
|
|
* NB: In pure implementations of rpc, the caller always waits for a reply
|
|
* msg. This message is sent when svc_sendreply is called.
|
|
* Therefore pure service implementations should always call
|
|
* svc_sendreply even if the function logically returns void; use
|
|
* xdr.h - xdr_void for the xdr routine. HOWEVER, tcp based rpc allows
|
|
* for the abuse of pure rpc via batched calling or pipelining. In the
|
|
* case of a batched call, svc_sendreply should NOT be called since
|
|
* this would send a return message, which is what batching tries to avoid.
|
|
* It is the service/protocol writer's responsibility to know which calls are
|
|
* batched and which are not. Warning: responding to batch calls may
|
|
* deadlock the caller and server processes!
|
|
*/
|
|
|
|
__BEGIN_DECLS
|
|
extern bool_t svc_sendreply(SVCXPRT *, xdrproc_t, void *);
|
|
extern void svcerr_decode(SVCXPRT *);
|
|
extern void svcerr_weakauth(SVCXPRT *);
|
|
extern void svcerr_noproc(SVCXPRT *);
|
|
extern void svcerr_progvers(SVCXPRT *, rpcvers_t, rpcvers_t);
|
|
extern void svcerr_auth(SVCXPRT *, enum auth_stat);
|
|
extern void svcerr_noprog(SVCXPRT *);
|
|
extern void svcerr_systemerr(SVCXPRT *);
|
|
extern int rpc_reg(rpcprog_t, rpcvers_t, rpcproc_t,
|
|
char *(*)(char *), xdrproc_t, xdrproc_t,
|
|
char *);
|
|
__END_DECLS
|
|
|
|
/*
|
|
* Lowest level dispatching -OR- who owns this process anyway.
|
|
* Somebody has to wait for incoming requests and then call the correct
|
|
* service routine. The routine svc_run does infinite waiting; i.e.,
|
|
* svc_run never returns.
|
|
* Since another (co-existant) package may wish to selectively wait for
|
|
* incoming calls or other events outside of the rpc architecture, the
|
|
* routine svc_getreq is provided. It must be passed readfds, the
|
|
* "in-place" results of a select system call (see select, section 2).
|
|
*/
|
|
|
|
/*
|
|
* Global keeper of rpc service descriptors in use
|
|
* dynamic; must be inspected before each call to select
|
|
*/
|
|
extern int svc_maxfd;
|
|
#ifdef FD_SETSIZE
|
|
extern fd_set svc_fdset;
|
|
#define svc_fds svc_fdset.fds_bits[0] /* compatibility */
|
|
#else
|
|
extern int svc_fds;
|
|
#endif /* def FD_SETSIZE */
|
|
|
|
/*
|
|
* A set of null auth methods used by any authentication protocols
|
|
* that don't need to inspect or modify the message body.
|
|
*/
|
|
extern SVCAUTH _svc_auth_null;
|
|
|
|
/*
|
|
* a small program implemented by the svc_rpc implementation itself;
|
|
* also see clnt.h for protocol numbers.
|
|
*/
|
|
__BEGIN_DECLS
|
|
extern void rpctest_service(void);
|
|
__END_DECLS
|
|
|
|
__BEGIN_DECLS
|
|
extern SVCXPRT *svc_xprt_alloc(void);
|
|
extern void svc_xprt_free(SVCXPRT *);
|
|
extern void svc_getreq(int);
|
|
extern void svc_getreqset(fd_set *);
|
|
extern void svc_getreq_common(int);
|
|
struct pollfd;
|
|
extern void svc_getreq_poll(struct pollfd *, int);
|
|
|
|
extern void svc_run(void);
|
|
extern void svc_exit(void);
|
|
__END_DECLS
|
|
|
|
/*
|
|
* Socket to use on svcxxx_create call to get default socket
|
|
*/
|
|
#define RPC_ANYSOCK -1
|
|
#define RPC_ANYFD RPC_ANYSOCK
|
|
|
|
/*
|
|
* These are the existing service side transport implementations
|
|
*/
|
|
|
|
__BEGIN_DECLS
|
|
/*
|
|
* Transport independent svc_create routine.
|
|
*/
|
|
extern int svc_create(void (*)(struct svc_req *, SVCXPRT *),
|
|
const rpcprog_t, const rpcvers_t, const char *);
|
|
/*
|
|
* void (*dispatch)(); -- dispatch routine
|
|
* const rpcprog_t prognum; -- program number
|
|
* const rpcvers_t versnum; -- version number
|
|
* const char *nettype; -- network type
|
|
*/
|
|
|
|
|
|
/*
|
|
* Generic server creation routine. It takes a netconfig structure
|
|
* instead of a nettype.
|
|
*/
|
|
|
|
extern SVCXPRT *svc_tp_create(void (*)(struct svc_req *, SVCXPRT *),
|
|
const rpcprog_t, const rpcvers_t,
|
|
const struct netconfig *);
|
|
/*
|
|
* void (*dispatch)(); -- dispatch routine
|
|
* const rpcprog_t prognum; -- program number
|
|
* const rpcvers_t versnum; -- version number
|
|
* const struct netconfig *nconf; -- netconfig structure
|
|
*/
|
|
|
|
|
|
/*
|
|
* Generic TLI create routine
|
|
*/
|
|
extern SVCXPRT *svc_tli_create(const int, const struct netconfig *,
|
|
const struct t_bind *, const u_int,
|
|
const u_int);
|
|
/*
|
|
* const int fd; -- connection end point
|
|
* const struct netconfig *nconf; -- netconfig structure for network
|
|
* const struct t_bind *bindaddr; -- local bind address
|
|
* const u_int sendsz; -- max sendsize
|
|
* const u_int recvsz; -- max recvsize
|
|
*/
|
|
|
|
/*
|
|
* Connectionless and connectionful create routines
|
|
*/
|
|
|
|
extern SVCXPRT *svc_vc_create(const int, const u_int, const u_int);
|
|
/*
|
|
* const int fd; -- open connection end point
|
|
* const u_int sendsize; -- max send size
|
|
* const u_int recvsize; -- max recv size
|
|
*/
|
|
|
|
/*
|
|
* Added for compatibility to old rpc 4.0. Obsoleted by svc_vc_create().
|
|
*/
|
|
extern SVCXPRT *svcunix_create(int, u_int, u_int, char *);
|
|
|
|
extern SVCXPRT *svc_dg_create(const int, const u_int, const u_int);
|
|
/*
|
|
* const int fd; -- open connection
|
|
* const u_int sendsize; -- max send size
|
|
* const u_int recvsize; -- max recv size
|
|
*/
|
|
|
|
|
|
/*
|
|
* the routine takes any *open* connection
|
|
* descriptor as its first input and is used for open connections.
|
|
*/
|
|
extern SVCXPRT *svc_fd_create(const int, const u_int, const u_int);
|
|
/*
|
|
* const int fd; -- open connection end point
|
|
* const u_int sendsize; -- max send size
|
|
* const u_int recvsize; -- max recv size
|
|
*/
|
|
|
|
/*
|
|
* Added for compatibility to old rpc 4.0. Obsoleted by svc_fd_create().
|
|
*/
|
|
extern SVCXPRT *svcunixfd_create(int, u_int, u_int);
|
|
|
|
/*
|
|
* Memory based rpc (for speed check and testing)
|
|
*/
|
|
extern SVCXPRT *svc_raw_create(void);
|
|
|
|
/*
|
|
* svc_dg_enable_cache() enables the cache on dg transports.
|
|
*/
|
|
int svc_dg_enablecache(SVCXPRT *, const u_int);
|
|
|
|
int __rpc_get_local_uid(SVCXPRT *_transp, uid_t *_uid);
|
|
|
|
__END_DECLS
|
|
|
|
|
|
/* for backward compatibility */
|
|
#include <rpc/svc_soc.h>
|
|
|
|
#endif /* !_RPC_SVC_H */
|