/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 2009, Sun Microsystems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * - Neither the name of Sun Microsystems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _RPC_KRPC_H_ #define _RPC_KRPC_H_ #ifdef _KERNEL /* * Definitions now shared between client and server RPC for backchannels. */ #define MCALL_MSG_SIZE 24 void clnt_bck_svccall(void *, struct mbuf *, uint32_t); enum clnt_stat clnt_bck_call(CLIENT *, struct rpc_callextra *, rpcproc_t, struct mbuf *, struct mbuf **, struct timeval, SVCXPRT *); struct mbuf *_rpc_copym_into_ext_pgs(struct mbuf *, int); /* * A pending RPC request which awaits a reply. Requests which have * received their reply will have cr_xid set to zero and cr_mrep to * the mbuf chain of the reply. */ struct ct_request { TAILQ_ENTRY(ct_request) cr_link; struct mbuf *cr_mrep; /* reply received by upcall */ #ifdef VIMAGE struct vnet *cr_vnet; #endif uint32_t cr_xid; /* XID of request */ int cr_error; /* any error from upcall */ char cr_verf[MAX_AUTH_BYTES]; /* reply verf */ }; TAILQ_HEAD(ct_request_list, ct_request); struct rc_data { struct mtx rc_lock; struct sockaddr_storage rc_addr; /* server address */ struct netconfig* rc_nconf; /* network type */ rpcprog_t rc_prog; /* program number */ rpcvers_t rc_vers; /* version number */ size_t rc_sendsz; size_t rc_recvsz; struct timeval rc_timeout; struct timeval rc_retry; int rc_retries; int rc_privport; char *rc_waitchan; int rc_intr; int rc_connecting; int rc_closed; struct ucred *rc_ucred; CLIENT* rc_client; /* underlying RPC client */ struct rpc_err rc_err; void *rc_backchannel; bool rc_tls; /* Enable TLS on connection */ char *rc_tlscertname; void (*rc_reconcall)(CLIENT *, void *, struct ucred *); /* reconection upcall */ void *rc_reconarg; /* upcall arg */ }; /* Bits for ct_rcvstate. */ #define RPCRCVSTATE_NORMAL 0x01 /* Normal reception. */ #define RPCRCVSTATE_NONAPPDATA 0x02 /* Reception of a non-application record. */ #define RPCRCVSTATE_TLSHANDSHAKE 0x04 /* Reception blocked for TLS handshake. */ #define RPCRCVSTATE_UPCALLNEEDED 0x08 /* Upcall to rpctlscd needed. */ #define RPCRCVSTATE_UPCALLINPROG 0x10 /* Upcall to rpctlscd in progress. */ #define RPCRCVSTATE_SOUPCALLNEEDED 0x20 /* Socket upcall needed. */ #define RPCRCVSTATE_UPCALLTHREAD 0x40 /* Upcall kthread running. */ struct ct_data { struct mtx ct_lock; int ct_threads; /* number of threads in clnt_vc_call */ bool_t ct_closing; /* TRUE if we are closing */ bool_t ct_closed; /* TRUE if we are closed */ struct socket *ct_socket; /* connection socket */ bool_t ct_closeit; /* close it on destroy */ struct timeval ct_wait; /* wait interval in milliseconds */ struct sockaddr_storage ct_addr; /* remote addr */ struct rpc_err ct_error; uint32_t ct_xid; char ct_mcallc[MCALL_MSG_SIZE]; /* marshalled callmsg */ size_t ct_mpos; /* pos after marshal */ const char *ct_waitchan; int ct_waitflag; struct mbuf *ct_record; /* current reply record */ size_t ct_record_resid; /* how much left of reply to read */ bool_t ct_record_eor; /* true if reading last fragment */ struct ct_request_list ct_pending; int ct_upcallrefs; /* Ref cnt of upcalls in prog. */ SVCXPRT *ct_backchannelxprt; /* xprt for backchannel */ enum tlsstate { RPCTLS_NONE = 0, RPCTLS_INHANDSHAKE, /* fd given to the daemon, daemon is working */ RPCTLS_COMPLETE, /* daemon reported success rpctlscd_connect() */ } ct_tlsstate; uint32_t ct_rcvstate; /* Handle receiving for TLS upcalls */ struct mbuf *ct_raw; /* Raw mbufs recv'd */ }; struct cf_conn { /* kept in xprt->xp_p1 for actual connection */ enum xprt_stat strm_stat; struct mbuf *mpending; /* unparsed data read from the socket */ struct mbuf *mreq; /* current record being built from mpending */ uint32_t resid; /* number of bytes needed for fragment */ bool_t eor; /* reading last fragment of current record */ }; void rpcnl_init(void); #endif /* _KERNEL */ #endif /* _RPC_KRPC_H_ */
