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RPC(3): Import from FreeBSD
This commit is contained in:
Sebastian Huber
812
freebsd/lib/libc/rpc/svc_vc.c
Normal file
812
freebsd/lib/libc/rpc/svc_vc.c
Normal file
@@ -0,0 +1,812 @@
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#include <machine/rtems-bsd-user-space.h>
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/* $NetBSD: svc_vc.c,v 1.7 2000/08/03 00:01:53 fvdl Exp $ */
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/*-
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* Copyright (c) 2009, Sun Microsystems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of Sun Microsystems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char *sccsid2 = "@(#)svc_tcp.c 1.21 87/08/11 Copyr 1984 Sun Micro";
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static char *sccsid = "@(#)svc_tcp.c 2.2 88/08/01 4.0 RPCSRC";
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* svc_vc.c, Server side for Connection Oriented based RPC.
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*
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* Actually implements two flavors of transporter -
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* a tcp rendezvouser (a listner and connection establisher)
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* and a record/tcp stream.
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*/
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#include "namespace.h"
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#include "reentrant.h"
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#include <sys/types.h>
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#include <rtems/bsd/sys/param.h>
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#include <sys/poll.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <sys/time.h>
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#include <sys/uio.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <assert.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <rpc/rpc.h>
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#include "rpc_com.h"
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#include "mt_misc.h"
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#include "un-namespace.h"
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static SVCXPRT *makefd_xprt(int, u_int, u_int);
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static bool_t rendezvous_request(SVCXPRT *, struct rpc_msg *);
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static enum xprt_stat rendezvous_stat(SVCXPRT *);
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static void svc_vc_destroy(SVCXPRT *);
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static void __svc_vc_dodestroy (SVCXPRT *);
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static int read_vc(void *, void *, int);
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static int write_vc(void *, void *, int);
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static enum xprt_stat svc_vc_stat(SVCXPRT *);
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static bool_t svc_vc_recv(SVCXPRT *, struct rpc_msg *);
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static bool_t svc_vc_getargs(SVCXPRT *, xdrproc_t, void *);
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static bool_t svc_vc_freeargs(SVCXPRT *, xdrproc_t, void *);
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static bool_t svc_vc_reply(SVCXPRT *, struct rpc_msg *);
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static void svc_vc_rendezvous_ops(SVCXPRT *);
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static void svc_vc_ops(SVCXPRT *);
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static bool_t svc_vc_control(SVCXPRT *xprt, const u_int rq, void *in);
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static bool_t svc_vc_rendezvous_control (SVCXPRT *xprt, const u_int rq,
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void *in);
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struct cf_rendezvous { /* kept in xprt->xp_p1 for rendezvouser */
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u_int sendsize;
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u_int recvsize;
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int maxrec;
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};
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struct cf_conn { /* kept in xprt->xp_p1 for actual connection */
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enum xprt_stat strm_stat;
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u_int32_t x_id;
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XDR xdrs;
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char verf_body[MAX_AUTH_BYTES];
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u_int sendsize;
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u_int recvsize;
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int maxrec;
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bool_t nonblock;
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struct timeval last_recv_time;
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};
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/*
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* Usage:
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* xprt = svc_vc_create(sock, send_buf_size, recv_buf_size);
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*
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* Creates, registers, and returns a (rpc) tcp based transporter.
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* Once *xprt is initialized, it is registered as a transporter
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* see (svc.h, xprt_register). This routine returns
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* a NULL if a problem occurred.
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*
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* The filedescriptor passed in is expected to refer to a bound, but
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* not yet connected socket.
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*
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* Since streams do buffered io similar to stdio, the caller can specify
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* how big the send and receive buffers are via the second and third parms;
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* 0 => use the system default.
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*/
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SVCXPRT *
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svc_vc_create(fd, sendsize, recvsize)
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int fd;
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u_int sendsize;
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u_int recvsize;
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{
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SVCXPRT *xprt;
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struct cf_rendezvous *r = NULL;
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struct __rpc_sockinfo si;
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struct sockaddr_storage sslocal;
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socklen_t slen;
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if (!__rpc_fd2sockinfo(fd, &si))
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return NULL;
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r = mem_alloc(sizeof(*r));
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if (r == NULL) {
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warnx("svc_vc_create: out of memory");
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goto cleanup_svc_vc_create;
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}
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r->sendsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsize);
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r->recvsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsize);
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r->maxrec = __svc_maxrec;
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xprt = svc_xprt_alloc();
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if (xprt == NULL) {
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warnx("svc_vc_create: out of memory");
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goto cleanup_svc_vc_create;
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}
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xprt->xp_p1 = r;
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xprt->xp_verf = _null_auth;
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svc_vc_rendezvous_ops(xprt);
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xprt->xp_port = (u_short)-1; /* It is the rendezvouser */
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xprt->xp_fd = fd;
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slen = sizeof (struct sockaddr_storage);
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if (_getsockname(fd, (struct sockaddr *)(void *)&sslocal, &slen) < 0) {
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warnx("svc_vc_create: could not retrieve local addr");
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goto cleanup_svc_vc_create;
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}
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xprt->xp_ltaddr.maxlen = xprt->xp_ltaddr.len = sslocal.ss_len;
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xprt->xp_ltaddr.buf = mem_alloc((size_t)sslocal.ss_len);
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if (xprt->xp_ltaddr.buf == NULL) {
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warnx("svc_vc_create: no mem for local addr");
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goto cleanup_svc_vc_create;
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}
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memcpy(xprt->xp_ltaddr.buf, &sslocal, (size_t)sslocal.ss_len);
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xprt->xp_rtaddr.maxlen = sizeof (struct sockaddr_storage);
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xprt_register(xprt);
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return (xprt);
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cleanup_svc_vc_create:
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if (xprt)
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mem_free(xprt, sizeof(*xprt));
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if (r != NULL)
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mem_free(r, sizeof(*r));
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return (NULL);
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}
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/*
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* Like svtcp_create(), except the routine takes any *open* UNIX file
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* descriptor as its first input.
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*/
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SVCXPRT *
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svc_fd_create(fd, sendsize, recvsize)
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int fd;
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u_int sendsize;
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u_int recvsize;
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{
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struct sockaddr_storage ss;
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socklen_t slen;
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SVCXPRT *ret;
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assert(fd != -1);
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ret = makefd_xprt(fd, sendsize, recvsize);
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if (ret == NULL)
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return NULL;
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slen = sizeof (struct sockaddr_storage);
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if (_getsockname(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) {
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warnx("svc_fd_create: could not retrieve local addr");
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goto freedata;
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}
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ret->xp_ltaddr.maxlen = ret->xp_ltaddr.len = ss.ss_len;
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ret->xp_ltaddr.buf = mem_alloc((size_t)ss.ss_len);
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if (ret->xp_ltaddr.buf == NULL) {
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warnx("svc_fd_create: no mem for local addr");
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goto freedata;
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}
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memcpy(ret->xp_ltaddr.buf, &ss, (size_t)ss.ss_len);
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slen = sizeof (struct sockaddr_storage);
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if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) {
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warnx("svc_fd_create: could not retrieve remote addr");
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goto freedata;
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}
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ret->xp_rtaddr.maxlen = ret->xp_rtaddr.len = ss.ss_len;
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ret->xp_rtaddr.buf = mem_alloc((size_t)ss.ss_len);
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if (ret->xp_rtaddr.buf == NULL) {
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warnx("svc_fd_create: no mem for local addr");
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goto freedata;
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}
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memcpy(ret->xp_rtaddr.buf, &ss, (size_t)ss.ss_len);
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#ifdef PORTMAP
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if (ss.ss_family == AF_INET || ss.ss_family == AF_LOCAL) {
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ret->xp_raddr = *(struct sockaddr_in *)ret->xp_rtaddr.buf;
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ret->xp_addrlen = sizeof (struct sockaddr_in);
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}
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#endif /* PORTMAP */
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return ret;
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freedata:
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if (ret->xp_ltaddr.buf != NULL)
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mem_free(ret->xp_ltaddr.buf, rep->xp_ltaddr.maxlen);
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return NULL;
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}
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static SVCXPRT *
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makefd_xprt(fd, sendsize, recvsize)
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int fd;
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u_int sendsize;
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u_int recvsize;
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{
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SVCXPRT *xprt;
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struct cf_conn *cd;
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const char *netid;
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struct __rpc_sockinfo si;
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assert(fd != -1);
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xprt = svc_xprt_alloc();
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if (xprt == NULL) {
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warnx("svc_vc: makefd_xprt: out of memory");
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goto done;
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}
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cd = mem_alloc(sizeof(struct cf_conn));
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if (cd == NULL) {
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warnx("svc_tcp: makefd_xprt: out of memory");
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svc_xprt_free(xprt);
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xprt = NULL;
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goto done;
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}
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cd->strm_stat = XPRT_IDLE;
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xdrrec_create(&(cd->xdrs), sendsize, recvsize,
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xprt, read_vc, write_vc);
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xprt->xp_p1 = cd;
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xprt->xp_verf.oa_base = cd->verf_body;
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svc_vc_ops(xprt); /* truely deals with calls */
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xprt->xp_port = 0; /* this is a connection, not a rendezvouser */
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xprt->xp_fd = fd;
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if (__rpc_fd2sockinfo(fd, &si) && __rpc_sockinfo2netid(&si, &netid))
|
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xprt->xp_netid = strdup(netid);
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||||
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||||
xprt_register(xprt);
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done:
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return (xprt);
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}
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/*ARGSUSED*/
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static bool_t
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rendezvous_request(xprt, msg)
|
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SVCXPRT *xprt;
|
||||
struct rpc_msg *msg;
|
||||
{
|
||||
int sock, flags;
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||||
struct cf_rendezvous *r;
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||||
struct cf_conn *cd;
|
||||
struct sockaddr_storage addr;
|
||||
socklen_t len;
|
||||
struct __rpc_sockinfo si;
|
||||
SVCXPRT *newxprt;
|
||||
fd_set cleanfds;
|
||||
|
||||
assert(xprt != NULL);
|
||||
assert(msg != NULL);
|
||||
|
||||
r = (struct cf_rendezvous *)xprt->xp_p1;
|
||||
again:
|
||||
len = sizeof addr;
|
||||
if ((sock = _accept(xprt->xp_fd, (struct sockaddr *)(void *)&addr,
|
||||
&len)) < 0) {
|
||||
if (errno == EINTR)
|
||||
goto again;
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||||
/*
|
||||
* Clean out the most idle file descriptor when we're
|
||||
* running out.
|
||||
*/
|
||||
if (errno == EMFILE || errno == ENFILE) {
|
||||
cleanfds = svc_fdset;
|
||||
__svc_clean_idle(&cleanfds, 0, FALSE);
|
||||
goto again;
|
||||
}
|
||||
return (FALSE);
|
||||
}
|
||||
/*
|
||||
* make a new transporter (re-uses xprt)
|
||||
*/
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||||
newxprt = makefd_xprt(sock, r->sendsize, r->recvsize);
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||||
newxprt->xp_rtaddr.buf = mem_alloc(len);
|
||||
if (newxprt->xp_rtaddr.buf == NULL)
|
||||
return (FALSE);
|
||||
memcpy(newxprt->xp_rtaddr.buf, &addr, len);
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||||
newxprt->xp_rtaddr.len = len;
|
||||
#ifdef PORTMAP
|
||||
if (addr.ss_family == AF_INET || addr.ss_family == AF_LOCAL) {
|
||||
newxprt->xp_raddr = *(struct sockaddr_in *)newxprt->xp_rtaddr.buf;
|
||||
newxprt->xp_addrlen = sizeof (struct sockaddr_in);
|
||||
}
|
||||
#endif /* PORTMAP */
|
||||
if (__rpc_fd2sockinfo(sock, &si) && si.si_proto == IPPROTO_TCP) {
|
||||
len = 1;
|
||||
/* XXX fvdl - is this useful? */
|
||||
_setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, &len, sizeof (len));
|
||||
}
|
||||
|
||||
cd = (struct cf_conn *)newxprt->xp_p1;
|
||||
|
||||
cd->recvsize = r->recvsize;
|
||||
cd->sendsize = r->sendsize;
|
||||
cd->maxrec = r->maxrec;
|
||||
|
||||
if (cd->maxrec != 0) {
|
||||
flags = _fcntl(sock, F_GETFL, 0);
|
||||
if (flags == -1)
|
||||
return (FALSE);
|
||||
if (_fcntl(sock, F_SETFL, flags | O_NONBLOCK) == -1)
|
||||
return (FALSE);
|
||||
if (cd->recvsize > cd->maxrec)
|
||||
cd->recvsize = cd->maxrec;
|
||||
cd->nonblock = TRUE;
|
||||
__xdrrec_setnonblock(&cd->xdrs, cd->maxrec);
|
||||
} else
|
||||
cd->nonblock = FALSE;
|
||||
|
||||
gettimeofday(&cd->last_recv_time, NULL);
|
||||
|
||||
return (FALSE); /* there is never an rpc msg to be processed */
|
||||
}
|
||||
|
||||
/*ARGSUSED*/
|
||||
static enum xprt_stat
|
||||
rendezvous_stat(xprt)
|
||||
SVCXPRT *xprt;
|
||||
{
|
||||
|
||||
return (XPRT_IDLE);
|
||||
}
|
||||
|
||||
static void
|
||||
svc_vc_destroy(xprt)
|
||||
SVCXPRT *xprt;
|
||||
{
|
||||
assert(xprt != NULL);
|
||||
|
||||
xprt_unregister(xprt);
|
||||
__svc_vc_dodestroy(xprt);
|
||||
}
|
||||
|
||||
static void
|
||||
__svc_vc_dodestroy(xprt)
|
||||
SVCXPRT *xprt;
|
||||
{
|
||||
struct cf_conn *cd;
|
||||
struct cf_rendezvous *r;
|
||||
|
||||
cd = (struct cf_conn *)xprt->xp_p1;
|
||||
|
||||
if (xprt->xp_fd != RPC_ANYFD)
|
||||
(void)_close(xprt->xp_fd);
|
||||
if (xprt->xp_port != 0) {
|
||||
/* a rendezvouser socket */
|
||||
r = (struct cf_rendezvous *)xprt->xp_p1;
|
||||
mem_free(r, sizeof (struct cf_rendezvous));
|
||||
xprt->xp_port = 0;
|
||||
} else {
|
||||
/* an actual connection socket */
|
||||
XDR_DESTROY(&(cd->xdrs));
|
||||
mem_free(cd, sizeof(struct cf_conn));
|
||||
}
|
||||
if (xprt->xp_rtaddr.buf)
|
||||
mem_free(xprt->xp_rtaddr.buf, xprt->xp_rtaddr.maxlen);
|
||||
if (xprt->xp_ltaddr.buf)
|
||||
mem_free(xprt->xp_ltaddr.buf, xprt->xp_ltaddr.maxlen);
|
||||
if (xprt->xp_tp)
|
||||
free(xprt->xp_tp);
|
||||
if (xprt->xp_netid)
|
||||
free(xprt->xp_netid);
|
||||
svc_xprt_free(xprt);
|
||||
}
|
||||
|
||||
/*ARGSUSED*/
|
||||
static bool_t
|
||||
svc_vc_control(xprt, rq, in)
|
||||
SVCXPRT *xprt;
|
||||
const u_int rq;
|
||||
void *in;
|
||||
{
|
||||
return (FALSE);
|
||||
}
|
||||
|
||||
static bool_t
|
||||
svc_vc_rendezvous_control(xprt, rq, in)
|
||||
SVCXPRT *xprt;
|
||||
const u_int rq;
|
||||
void *in;
|
||||
{
|
||||
struct cf_rendezvous *cfp;
|
||||
|
||||
cfp = (struct cf_rendezvous *)xprt->xp_p1;
|
||||
if (cfp == NULL)
|
||||
return (FALSE);
|
||||
switch (rq) {
|
||||
case SVCGET_CONNMAXREC:
|
||||
*(int *)in = cfp->maxrec;
|
||||
break;
|
||||
case SVCSET_CONNMAXREC:
|
||||
cfp->maxrec = *(int *)in;
|
||||
break;
|
||||
default:
|
||||
return (FALSE);
|
||||
}
|
||||
return (TRUE);
|
||||
}
|
||||
|
||||
/*
|
||||
* reads data from the tcp or uip connection.
|
||||
* any error is fatal and the connection is closed.
|
||||
* (And a read of zero bytes is a half closed stream => error.)
|
||||
* All read operations timeout after 35 seconds. A timeout is
|
||||
* fatal for the connection.
|
||||
*/
|
||||
static int
|
||||
read_vc(xprtp, buf, len)
|
||||
void *xprtp;
|
||||
void *buf;
|
||||
int len;
|
||||
{
|
||||
SVCXPRT *xprt;
|
||||
int sock;
|
||||
int milliseconds = 35 * 1000;
|
||||
struct pollfd pollfd;
|
||||
struct cf_conn *cfp;
|
||||
|
||||
xprt = (SVCXPRT *)xprtp;
|
||||
assert(xprt != NULL);
|
||||
|
||||
sock = xprt->xp_fd;
|
||||
|
||||
cfp = (struct cf_conn *)xprt->xp_p1;
|
||||
|
||||
if (cfp->nonblock) {
|
||||
len = _read(sock, buf, (size_t)len);
|
||||
if (len < 0) {
|
||||
if (errno == EAGAIN)
|
||||
len = 0;
|
||||
else
|
||||
goto fatal_err;
|
||||
}
|
||||
if (len != 0)
|
||||
gettimeofday(&cfp->last_recv_time, NULL);
|
||||
return len;
|
||||
}
|
||||
|
||||
do {
|
||||
pollfd.fd = sock;
|
||||
pollfd.events = POLLIN;
|
||||
pollfd.revents = 0;
|
||||
switch (_poll(&pollfd, 1, milliseconds)) {
|
||||
case -1:
|
||||
if (errno == EINTR)
|
||||
continue;
|
||||
/*FALLTHROUGH*/
|
||||
case 0:
|
||||
goto fatal_err;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
} while ((pollfd.revents & POLLIN) == 0);
|
||||
|
||||
if ((len = _read(sock, buf, (size_t)len)) > 0) {
|
||||
gettimeofday(&cfp->last_recv_time, NULL);
|
||||
return (len);
|
||||
}
|
||||
|
||||
fatal_err:
|
||||
((struct cf_conn *)(xprt->xp_p1))->strm_stat = XPRT_DIED;
|
||||
return (-1);
|
||||
}
|
||||
|
||||
/*
|
||||
* writes data to the tcp connection.
|
||||
* Any error is fatal and the connection is closed.
|
||||
*/
|
||||
static int
|
||||
write_vc(xprtp, buf, len)
|
||||
void *xprtp;
|
||||
void *buf;
|
||||
int len;
|
||||
{
|
||||
SVCXPRT *xprt;
|
||||
int i, cnt;
|
||||
struct cf_conn *cd;
|
||||
struct timeval tv0, tv1;
|
||||
|
||||
xprt = (SVCXPRT *)xprtp;
|
||||
assert(xprt != NULL);
|
||||
|
||||
cd = (struct cf_conn *)xprt->xp_p1;
|
||||
|
||||
if (cd->nonblock)
|
||||
gettimeofday(&tv0, NULL);
|
||||
|
||||
for (cnt = len; cnt > 0; cnt -= i, buf = (char *)buf + i) {
|
||||
i = _write(xprt->xp_fd, buf, (size_t)cnt);
|
||||
if (i < 0) {
|
||||
if (errno != EAGAIN || !cd->nonblock) {
|
||||
cd->strm_stat = XPRT_DIED;
|
||||
return (-1);
|
||||
}
|
||||
if (cd->nonblock) {
|
||||
/*
|
||||
* For non-blocking connections, do not
|
||||
* take more than 2 seconds writing the
|
||||
* data out.
|
||||
*
|
||||
* XXX 2 is an arbitrary amount.
|
||||
*/
|
||||
gettimeofday(&tv1, NULL);
|
||||
if (tv1.tv_sec - tv0.tv_sec >= 2) {
|
||||
cd->strm_stat = XPRT_DIED;
|
||||
return (-1);
|
||||
}
|
||||
}
|
||||
i = 0;
|
||||
}
|
||||
}
|
||||
|
||||
return (len);
|
||||
}
|
||||
|
||||
static enum xprt_stat
|
||||
svc_vc_stat(xprt)
|
||||
SVCXPRT *xprt;
|
||||
{
|
||||
struct cf_conn *cd;
|
||||
|
||||
assert(xprt != NULL);
|
||||
|
||||
cd = (struct cf_conn *)(xprt->xp_p1);
|
||||
|
||||
if (cd->strm_stat == XPRT_DIED)
|
||||
return (XPRT_DIED);
|
||||
if (! xdrrec_eof(&(cd->xdrs)))
|
||||
return (XPRT_MOREREQS);
|
||||
return (XPRT_IDLE);
|
||||
}
|
||||
|
||||
static bool_t
|
||||
svc_vc_recv(xprt, msg)
|
||||
SVCXPRT *xprt;
|
||||
struct rpc_msg *msg;
|
||||
{
|
||||
struct cf_conn *cd;
|
||||
XDR *xdrs;
|
||||
|
||||
assert(xprt != NULL);
|
||||
assert(msg != NULL);
|
||||
|
||||
cd = (struct cf_conn *)(xprt->xp_p1);
|
||||
xdrs = &(cd->xdrs);
|
||||
|
||||
if (cd->nonblock) {
|
||||
if (!__xdrrec_getrec(xdrs, &cd->strm_stat, TRUE))
|
||||
return FALSE;
|
||||
} else {
|
||||
(void)xdrrec_skiprecord(xdrs);
|
||||
}
|
||||
|
||||
xdrs->x_op = XDR_DECODE;
|
||||
if (xdr_callmsg(xdrs, msg)) {
|
||||
cd->x_id = msg->rm_xid;
|
||||
return (TRUE);
|
||||
}
|
||||
cd->strm_stat = XPRT_DIED;
|
||||
return (FALSE);
|
||||
}
|
||||
|
||||
static bool_t
|
||||
svc_vc_getargs(xprt, xdr_args, args_ptr)
|
||||
SVCXPRT *xprt;
|
||||
xdrproc_t xdr_args;
|
||||
void *args_ptr;
|
||||
{
|
||||
struct cf_conn *cd;
|
||||
|
||||
assert(xprt != NULL);
|
||||
cd = (struct cf_conn *)(xprt->xp_p1);
|
||||
return (SVCAUTH_UNWRAP(&SVC_AUTH(xprt),
|
||||
&cd->xdrs, xdr_args, args_ptr));
|
||||
}
|
||||
|
||||
static bool_t
|
||||
svc_vc_freeargs(xprt, xdr_args, args_ptr)
|
||||
SVCXPRT *xprt;
|
||||
xdrproc_t xdr_args;
|
||||
void *args_ptr;
|
||||
{
|
||||
XDR *xdrs;
|
||||
|
||||
assert(xprt != NULL);
|
||||
/* args_ptr may be NULL */
|
||||
|
||||
xdrs = &(((struct cf_conn *)(xprt->xp_p1))->xdrs);
|
||||
|
||||
xdrs->x_op = XDR_FREE;
|
||||
return ((*xdr_args)(xdrs, args_ptr));
|
||||
}
|
||||
|
||||
static bool_t
|
||||
svc_vc_reply(xprt, msg)
|
||||
SVCXPRT *xprt;
|
||||
struct rpc_msg *msg;
|
||||
{
|
||||
struct cf_conn *cd;
|
||||
XDR *xdrs;
|
||||
bool_t rstat;
|
||||
xdrproc_t xdr_proc;
|
||||
caddr_t xdr_where;
|
||||
u_int pos;
|
||||
|
||||
assert(xprt != NULL);
|
||||
assert(msg != NULL);
|
||||
|
||||
cd = (struct cf_conn *)(xprt->xp_p1);
|
||||
xdrs = &(cd->xdrs);
|
||||
|
||||
xdrs->x_op = XDR_ENCODE;
|
||||
msg->rm_xid = cd->x_id;
|
||||
rstat = TRUE;
|
||||
if (msg->rm_reply.rp_stat == MSG_ACCEPTED &&
|
||||
msg->rm_reply.rp_acpt.ar_stat == SUCCESS) {
|
||||
xdr_proc = msg->acpted_rply.ar_results.proc;
|
||||
xdr_where = msg->acpted_rply.ar_results.where;
|
||||
msg->acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
|
||||
msg->acpted_rply.ar_results.where = NULL;
|
||||
|
||||
pos = XDR_GETPOS(xdrs);
|
||||
if (!xdr_replymsg(xdrs, msg) ||
|
||||
!SVCAUTH_WRAP(&SVC_AUTH(xprt), xdrs, xdr_proc, xdr_where)) {
|
||||
XDR_SETPOS(xdrs, pos);
|
||||
rstat = FALSE;
|
||||
}
|
||||
} else {
|
||||
rstat = xdr_replymsg(xdrs, msg);
|
||||
}
|
||||
|
||||
if (rstat)
|
||||
(void)xdrrec_endofrecord(xdrs, TRUE);
|
||||
|
||||
return (rstat);
|
||||
}
|
||||
|
||||
static void
|
||||
svc_vc_ops(xprt)
|
||||
SVCXPRT *xprt;
|
||||
{
|
||||
static struct xp_ops ops;
|
||||
static struct xp_ops2 ops2;
|
||||
|
||||
/* VARIABLES PROTECTED BY ops_lock: ops, ops2 */
|
||||
|
||||
mutex_lock(&ops_lock);
|
||||
if (ops.xp_recv == NULL) {
|
||||
ops.xp_recv = svc_vc_recv;
|
||||
ops.xp_stat = svc_vc_stat;
|
||||
ops.xp_getargs = svc_vc_getargs;
|
||||
ops.xp_reply = svc_vc_reply;
|
||||
ops.xp_freeargs = svc_vc_freeargs;
|
||||
ops.xp_destroy = svc_vc_destroy;
|
||||
ops2.xp_control = svc_vc_control;
|
||||
}
|
||||
xprt->xp_ops = &ops;
|
||||
xprt->xp_ops2 = &ops2;
|
||||
mutex_unlock(&ops_lock);
|
||||
}
|
||||
|
||||
static void
|
||||
svc_vc_rendezvous_ops(xprt)
|
||||
SVCXPRT *xprt;
|
||||
{
|
||||
static struct xp_ops ops;
|
||||
static struct xp_ops2 ops2;
|
||||
|
||||
mutex_lock(&ops_lock);
|
||||
if (ops.xp_recv == NULL) {
|
||||
ops.xp_recv = rendezvous_request;
|
||||
ops.xp_stat = rendezvous_stat;
|
||||
ops.xp_getargs =
|
||||
(bool_t (*)(SVCXPRT *, xdrproc_t, void *))abort;
|
||||
ops.xp_reply =
|
||||
(bool_t (*)(SVCXPRT *, struct rpc_msg *))abort;
|
||||
ops.xp_freeargs =
|
||||
(bool_t (*)(SVCXPRT *, xdrproc_t, void *))abort,
|
||||
ops.xp_destroy = svc_vc_destroy;
|
||||
ops2.xp_control = svc_vc_rendezvous_control;
|
||||
}
|
||||
xprt->xp_ops = &ops;
|
||||
xprt->xp_ops2 = &ops2;
|
||||
mutex_unlock(&ops_lock);
|
||||
}
|
||||
|
||||
/*
|
||||
* Get the effective UID of the sending process. Used by rpcbind, keyserv
|
||||
* and rpc.yppasswdd on AF_LOCAL.
|
||||
*/
|
||||
int
|
||||
__rpc_get_local_uid(SVCXPRT *transp, uid_t *uid) {
|
||||
int sock, ret;
|
||||
gid_t egid;
|
||||
uid_t euid;
|
||||
struct sockaddr *sa;
|
||||
|
||||
sock = transp->xp_fd;
|
||||
sa = (struct sockaddr *)transp->xp_rtaddr.buf;
|
||||
if (sa->sa_family == AF_LOCAL) {
|
||||
ret = getpeereid(sock, &euid, &egid);
|
||||
if (ret == 0)
|
||||
*uid = euid;
|
||||
return (ret);
|
||||
} else
|
||||
return (-1);
|
||||
}
|
||||
|
||||
/*
|
||||
* Destroy xprts that have not have had any activity in 'timeout' seconds.
|
||||
* If 'cleanblock' is true, blocking connections (the default) are also
|
||||
* cleaned. If timeout is 0, the least active connection is picked.
|
||||
*/
|
||||
bool_t
|
||||
__svc_clean_idle(fd_set *fds, int timeout, bool_t cleanblock)
|
||||
{
|
||||
int i, ncleaned;
|
||||
SVCXPRT *xprt, *least_active;
|
||||
struct timeval tv, tdiff, tmax;
|
||||
struct cf_conn *cd;
|
||||
|
||||
gettimeofday(&tv, NULL);
|
||||
tmax.tv_sec = tmax.tv_usec = 0;
|
||||
least_active = NULL;
|
||||
rwlock_wrlock(&svc_fd_lock);
|
||||
for (i = ncleaned = 0; i <= svc_maxfd; i++) {
|
||||
if (FD_ISSET(i, fds)) {
|
||||
xprt = __svc_xports[i];
|
||||
if (xprt == NULL || xprt->xp_ops == NULL ||
|
||||
xprt->xp_ops->xp_recv != svc_vc_recv)
|
||||
continue;
|
||||
cd = (struct cf_conn *)xprt->xp_p1;
|
||||
if (!cleanblock && !cd->nonblock)
|
||||
continue;
|
||||
if (timeout == 0) {
|
||||
timersub(&tv, &cd->last_recv_time, &tdiff);
|
||||
if (timercmp(&tdiff, &tmax, >)) {
|
||||
tmax = tdiff;
|
||||
least_active = xprt;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
if (tv.tv_sec - cd->last_recv_time.tv_sec > timeout) {
|
||||
__xprt_unregister_unlocked(xprt);
|
||||
__svc_vc_dodestroy(xprt);
|
||||
ncleaned++;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (timeout == 0 && least_active != NULL) {
|
||||
__xprt_unregister_unlocked(least_active);
|
||||
__svc_vc_dodestroy(least_active);
|
||||
ncleaned++;
|
||||
}
|
||||
rwlock_unlock(&svc_fd_lock);
|
||||
return ncleaned > 0 ? TRUE : FALSE;
|
||||
}
|
||||
Reference in New Issue
Block a user