mirror of
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f4a180cc7b
No functionality change. Obtained from: NetBSD
791 lines
21 KiB
C
791 lines
21 KiB
C
/* $NetBSD: clnt_dg.c,v 1.4 2000/07/14 08:40:41 fvdl Exp $ */
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/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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/*
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* Copyright (c) 1986-1991 by Sun Microsystems Inc.
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*/
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/* #ident "@(#)clnt_dg.c 1.23 94/04/22 SMI" */
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#if !defined(lint) && defined(SCCSIDS)
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static char sccsid[] = "@(#)clnt_dg.c 1.19 89/03/16 Copyr 1988 Sun Micro";
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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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* Implements a connectionless client side RPC.
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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 <sys/event.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <arpa/inet.h>
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#include <rpc/rpc.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include <unistd.h>
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#include <err.h>
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#include "un-namespace.h"
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#include "rpc_com.h"
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#define RPC_MAX_BACKOFF 30 /* seconds */
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static struct clnt_ops *clnt_dg_ops(void);
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static bool_t time_not_ok(struct timeval *);
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static enum clnt_stat clnt_dg_call(CLIENT *, rpcproc_t, xdrproc_t, void *,
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xdrproc_t, void *, struct timeval);
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static void clnt_dg_geterr(CLIENT *, struct rpc_err *);
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static bool_t clnt_dg_freeres(CLIENT *, xdrproc_t, void *);
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static void clnt_dg_abort(CLIENT *);
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static bool_t clnt_dg_control(CLIENT *, u_int, void *);
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static void clnt_dg_destroy(CLIENT *);
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/*
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* This machinery implements per-fd locks for MT-safety. It is not
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* sufficient to do per-CLIENT handle locks for MT-safety because a
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* user may create more than one CLIENT handle with the same fd behind
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* it. Therfore, we allocate an array of flags (dg_fd_locks), protected
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* by the clnt_fd_lock mutex, and an array (dg_cv) of condition variables
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* similarly protected. Dg_fd_lock[fd] == 1 => a call is activte on some
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* CLIENT handle created for that fd.
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* The current implementation holds locks across the entire RPC and reply,
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* including retransmissions. Yes, this is silly, and as soon as this
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* code is proven to work, this should be the first thing fixed. One step
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* at a time.
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*/
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static int *dg_fd_locks;
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extern mutex_t clnt_fd_lock;
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static cond_t *dg_cv;
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#define release_fd_lock(fd, mask) { \
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mutex_lock(&clnt_fd_lock); \
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dg_fd_locks[fd] = 0; \
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mutex_unlock(&clnt_fd_lock); \
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thr_sigsetmask(SIG_SETMASK, &(mask), NULL); \
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cond_signal(&dg_cv[fd]); \
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}
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static const char mem_err_clnt_dg[] = "clnt_dg_create: out of memory";
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/* VARIABLES PROTECTED BY clnt_fd_lock: dg_fd_locks, dg_cv */
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/*
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* Private data kept per client handle
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*/
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struct cu_data {
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int cu_fd; /* connections fd */
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bool_t cu_closeit; /* opened by library */
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struct sockaddr_storage cu_raddr; /* remote address */
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int cu_rlen;
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struct timeval cu_wait; /* retransmit interval */
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struct timeval cu_total; /* total time for the call */
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struct rpc_err cu_error;
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XDR cu_outxdrs;
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u_int cu_xdrpos;
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u_int cu_sendsz; /* send size */
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char *cu_outbuf;
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u_int cu_recvsz; /* recv size */
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int cu_async;
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int cu_connect; /* Use connect(). */
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int cu_connected; /* Have done connect(). */
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struct kevent cu_kin;
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int cu_kq;
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char cu_inbuf[1];
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};
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/*
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* Connection less client creation returns with client handle parameters.
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* Default options are set, which the user can change using clnt_control().
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* fd should be open and bound.
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* NB: The rpch->cl_auth is initialized to null authentication.
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* Caller may wish to set this something more useful.
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*
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* sendsz and recvsz are the maximum allowable packet sizes that can be
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* sent and received. Normally they are the same, but they can be
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* changed to improve the program efficiency and buffer allocation.
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* If they are 0, use the transport default.
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*
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* If svcaddr is NULL, returns NULL.
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*/
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CLIENT *
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clnt_dg_create(fd, svcaddr, program, version, sendsz, recvsz)
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int fd; /* open file descriptor */
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const struct netbuf *svcaddr; /* servers address */
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rpcprog_t program; /* program number */
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rpcvers_t version; /* version number */
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u_int sendsz; /* buffer recv size */
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u_int recvsz; /* buffer send size */
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{
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CLIENT *cl = NULL; /* client handle */
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struct cu_data *cu = NULL; /* private data */
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struct timeval now;
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struct rpc_msg call_msg;
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sigset_t mask;
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sigset_t newmask;
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struct __rpc_sockinfo si;
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int one = 1;
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sigfillset(&newmask);
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thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
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mutex_lock(&clnt_fd_lock);
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if (dg_fd_locks == (int *) NULL) {
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int cv_allocsz;
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size_t fd_allocsz;
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int dtbsize = __rpc_dtbsize();
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fd_allocsz = dtbsize * sizeof (int);
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dg_fd_locks = (int *) mem_alloc(fd_allocsz);
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if (dg_fd_locks == (int *) NULL) {
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mutex_unlock(&clnt_fd_lock);
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thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
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goto err1;
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} else
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memset(dg_fd_locks, '\0', fd_allocsz);
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cv_allocsz = dtbsize * sizeof (cond_t);
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dg_cv = (cond_t *) mem_alloc(cv_allocsz);
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if (dg_cv == (cond_t *) NULL) {
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mem_free(dg_fd_locks, fd_allocsz);
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dg_fd_locks = (int *) NULL;
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mutex_unlock(&clnt_fd_lock);
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thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
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goto err1;
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} else {
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int i;
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for (i = 0; i < dtbsize; i++)
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cond_init(&dg_cv[i], 0, (void *) 0);
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}
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}
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mutex_unlock(&clnt_fd_lock);
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thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
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if (svcaddr == NULL) {
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rpc_createerr.cf_stat = RPC_UNKNOWNADDR;
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return (NULL);
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}
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if (!__rpc_fd2sockinfo(fd, &si)) {
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rpc_createerr.cf_stat = RPC_TLIERROR;
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rpc_createerr.cf_error.re_errno = 0;
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return (NULL);
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}
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/*
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* Find the receive and the send size
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*/
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sendsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsz);
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recvsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsz);
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if ((sendsz == 0) || (recvsz == 0)) {
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rpc_createerr.cf_stat = RPC_TLIERROR; /* XXX */
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rpc_createerr.cf_error.re_errno = 0;
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return (NULL);
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}
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if ((cl = mem_alloc(sizeof (CLIENT))) == NULL)
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goto err1;
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/*
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* Should be multiple of 4 for XDR.
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*/
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sendsz = ((sendsz + 3) / 4) * 4;
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recvsz = ((recvsz + 3) / 4) * 4;
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cu = mem_alloc(sizeof (*cu) + sendsz + recvsz);
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if (cu == NULL)
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goto err1;
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(void) memcpy(&cu->cu_raddr, svcaddr->buf, (size_t)svcaddr->len);
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cu->cu_rlen = svcaddr->len;
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cu->cu_outbuf = &cu->cu_inbuf[recvsz];
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/* Other values can also be set through clnt_control() */
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cu->cu_wait.tv_sec = 15; /* heuristically chosen */
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cu->cu_wait.tv_usec = 0;
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cu->cu_total.tv_sec = -1;
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cu->cu_total.tv_usec = -1;
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cu->cu_sendsz = sendsz;
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cu->cu_recvsz = recvsz;
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cu->cu_async = FALSE;
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cu->cu_connect = FALSE;
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cu->cu_connected = FALSE;
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(void) gettimeofday(&now, NULL);
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call_msg.rm_xid = __RPC_GETXID(&now);
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call_msg.rm_call.cb_prog = program;
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call_msg.rm_call.cb_vers = version;
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xdrmem_create(&(cu->cu_outxdrs), cu->cu_outbuf, sendsz, XDR_ENCODE);
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if (! xdr_callhdr(&(cu->cu_outxdrs), &call_msg)) {
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rpc_createerr.cf_stat = RPC_CANTENCODEARGS; /* XXX */
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rpc_createerr.cf_error.re_errno = 0;
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goto err2;
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}
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cu->cu_xdrpos = XDR_GETPOS(&(cu->cu_outxdrs));
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/* XXX fvdl - do we still want this? */
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#if 0
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(void)bindresvport_sa(fd, (struct sockaddr *)svcaddr->buf);
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#endif
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_ioctl(fd, FIONBIO, (char *)(void *)&one);
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/*
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* By default, closeit is always FALSE. It is users responsibility
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* to do a close on it, else the user may use clnt_control
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* to let clnt_destroy do it for him/her.
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*/
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cu->cu_closeit = FALSE;
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cu->cu_fd = fd;
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cl->cl_ops = clnt_dg_ops();
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cl->cl_private = (caddr_t)(void *)cu;
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cl->cl_auth = authnone_create();
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cl->cl_tp = NULL;
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cl->cl_netid = NULL;
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cu->cu_kq = -1;
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EV_SET(&cu->cu_kin, cu->cu_fd, EVFILT_READ, EV_ADD, 0, 0, 0);
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return (cl);
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err1:
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warnx(mem_err_clnt_dg);
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rpc_createerr.cf_stat = RPC_SYSTEMERROR;
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rpc_createerr.cf_error.re_errno = errno;
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err2:
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if (cl) {
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mem_free(cl, sizeof (CLIENT));
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if (cu)
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mem_free(cu, sizeof (*cu) + sendsz + recvsz);
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}
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return (NULL);
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}
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static enum clnt_stat
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clnt_dg_call(cl, proc, xargs, argsp, xresults, resultsp, utimeout)
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CLIENT *cl; /* client handle */
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rpcproc_t proc; /* procedure number */
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xdrproc_t xargs; /* xdr routine for args */
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void *argsp; /* pointer to args */
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xdrproc_t xresults; /* xdr routine for results */
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void *resultsp; /* pointer to results */
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struct timeval utimeout; /* seconds to wait before giving up */
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{
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struct cu_data *cu = (struct cu_data *)cl->cl_private;
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XDR *xdrs;
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size_t outlen = 0;
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struct rpc_msg reply_msg;
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XDR reply_xdrs;
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bool_t ok;
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int nrefreshes = 2; /* number of times to refresh cred */
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struct timeval timeout;
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struct timeval retransmit_time;
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struct timeval next_sendtime, starttime, time_waited, tv;
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struct timespec ts;
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struct kevent kv;
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struct sockaddr *sa;
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sigset_t mask;
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sigset_t newmask;
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socklen_t inlen, salen;
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ssize_t recvlen = 0;
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int kin_len, n, rpc_lock_value;
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u_int32_t xid;
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outlen = 0;
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sigfillset(&newmask);
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thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
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mutex_lock(&clnt_fd_lock);
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while (dg_fd_locks[cu->cu_fd])
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cond_wait(&dg_cv[cu->cu_fd], &clnt_fd_lock);
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if (__isthreaded)
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rpc_lock_value = 1;
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else
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rpc_lock_value = 0;
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dg_fd_locks[cu->cu_fd] = rpc_lock_value;
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mutex_unlock(&clnt_fd_lock);
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if (cu->cu_total.tv_usec == -1) {
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timeout = utimeout; /* use supplied timeout */
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} else {
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timeout = cu->cu_total; /* use default timeout */
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}
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if (cu->cu_connect && !cu->cu_connected) {
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if (_connect(cu->cu_fd, (struct sockaddr *)&cu->cu_raddr,
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cu->cu_rlen) < 0) {
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cu->cu_error.re_errno = errno;
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cu->cu_error.re_status = RPC_CANTSEND;
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goto out;
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}
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cu->cu_connected = 1;
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}
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if (cu->cu_connected) {
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sa = NULL;
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salen = 0;
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} else {
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sa = (struct sockaddr *)&cu->cu_raddr;
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salen = cu->cu_rlen;
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}
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time_waited.tv_sec = 0;
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time_waited.tv_usec = 0;
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retransmit_time = next_sendtime = cu->cu_wait;
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gettimeofday(&starttime, NULL);
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/* Clean up in case the last call ended in a longjmp(3) call. */
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if (cu->cu_kq >= 0)
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_close(cu->cu_kq);
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if ((cu->cu_kq = kqueue()) < 0) {
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cu->cu_error.re_errno = errno;
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cu->cu_error.re_status = RPC_CANTSEND;
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goto out;
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}
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kin_len = 1;
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call_again:
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xdrs = &(cu->cu_outxdrs);
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if (cu->cu_async == TRUE && xargs == NULL)
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goto get_reply;
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xdrs->x_op = XDR_ENCODE;
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XDR_SETPOS(xdrs, cu->cu_xdrpos);
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/*
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* the transaction is the first thing in the out buffer
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* XXX Yes, and it's in network byte order, so we should to
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* be careful when we increment it, shouldn't we.
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*/
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xid = ntohl(*(u_int32_t *)(void *)(cu->cu_outbuf));
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xid++;
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*(u_int32_t *)(void *)(cu->cu_outbuf) = htonl(xid);
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if ((! XDR_PUTINT32(xdrs, &proc)) ||
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(! AUTH_MARSHALL(cl->cl_auth, xdrs)) ||
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(! (*xargs)(xdrs, argsp))) {
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cu->cu_error.re_status = RPC_CANTENCODEARGS;
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goto out;
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}
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outlen = (size_t)XDR_GETPOS(xdrs);
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send_again:
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if (_sendto(cu->cu_fd, cu->cu_outbuf, outlen, 0, sa, salen) != outlen) {
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cu->cu_error.re_errno = errno;
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cu->cu_error.re_status = RPC_CANTSEND;
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goto out;
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}
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/*
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* Hack to provide rpc-based message passing
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*/
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if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
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cu->cu_error.re_status = RPC_TIMEDOUT;
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goto out;
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}
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get_reply:
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/*
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* sub-optimal code appears here because we have
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* some clock time to spare while the packets are in flight.
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* (We assume that this is actually only executed once.)
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*/
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reply_msg.acpted_rply.ar_verf = _null_auth;
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reply_msg.acpted_rply.ar_results.where = resultsp;
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reply_msg.acpted_rply.ar_results.proc = xresults;
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for (;;) {
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/* Decide how long to wait. */
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if (timercmp(&next_sendtime, &timeout, <))
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timersub(&next_sendtime, &time_waited, &tv);
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else
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timersub(&timeout, &time_waited, &tv);
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if (tv.tv_sec < 0 || tv.tv_usec < 0)
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tv.tv_sec = tv.tv_usec = 0;
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TIMEVAL_TO_TIMESPEC(&tv, &ts);
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n = _kevent(cu->cu_kq, &cu->cu_kin, kin_len, &kv, 1, &ts);
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/* We don't need to register the event again. */
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kin_len = 0;
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if (n == 1) {
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if (kv.flags & EV_ERROR) {
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cu->cu_error.re_errno = kv.data;
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cu->cu_error.re_status = RPC_CANTRECV;
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goto out;
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}
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/* We have some data now */
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do {
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recvlen = _recvfrom(cu->cu_fd, cu->cu_inbuf,
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cu->cu_recvsz, 0, NULL, NULL);
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} while (recvlen < 0 && errno == EINTR);
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if (recvlen < 0 && errno != EWOULDBLOCK) {
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cu->cu_error.re_errno = errno;
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cu->cu_error.re_status = RPC_CANTRECV;
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goto out;
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}
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if (recvlen >= sizeof(u_int32_t) &&
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(cu->cu_async == TRUE ||
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*((u_int32_t *)(void *)(cu->cu_inbuf)) ==
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*((u_int32_t *)(void *)(cu->cu_outbuf)))) {
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/* We now assume we have the proper reply. */
|
|
break;
|
|
}
|
|
}
|
|
if (n == -1 && errno != EINTR) {
|
|
cu->cu_error.re_errno = errno;
|
|
cu->cu_error.re_status = RPC_CANTRECV;
|
|
goto out;
|
|
}
|
|
gettimeofday(&tv, NULL);
|
|
timersub(&tv, &starttime, &time_waited);
|
|
|
|
/* Check for timeout. */
|
|
if (timercmp(&time_waited, &timeout, >)) {
|
|
cu->cu_error.re_status = RPC_TIMEDOUT;
|
|
goto out;
|
|
}
|
|
|
|
/* Retransmit if necessary. */
|
|
if (timercmp(&time_waited, &next_sendtime, >)) {
|
|
/* update retransmit_time */
|
|
if (retransmit_time.tv_sec < RPC_MAX_BACKOFF)
|
|
timeradd(&retransmit_time, &retransmit_time,
|
|
&retransmit_time);
|
|
timeradd(&next_sendtime, &retransmit_time,
|
|
&next_sendtime);
|
|
goto send_again;
|
|
}
|
|
}
|
|
inlen = (socklen_t)recvlen;
|
|
|
|
/*
|
|
* now decode and validate the response
|
|
*/
|
|
|
|
xdrmem_create(&reply_xdrs, cu->cu_inbuf, (u_int)recvlen, XDR_DECODE);
|
|
ok = xdr_replymsg(&reply_xdrs, &reply_msg);
|
|
/* XDR_DESTROY(&reply_xdrs); save a few cycles on noop destroy */
|
|
if (ok) {
|
|
if ((reply_msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
|
|
(reply_msg.acpted_rply.ar_stat == SUCCESS))
|
|
cu->cu_error.re_status = RPC_SUCCESS;
|
|
else
|
|
_seterr_reply(&reply_msg, &(cu->cu_error));
|
|
|
|
if (cu->cu_error.re_status == RPC_SUCCESS) {
|
|
if (! AUTH_VALIDATE(cl->cl_auth,
|
|
&reply_msg.acpted_rply.ar_verf)) {
|
|
cu->cu_error.re_status = RPC_AUTHERROR;
|
|
cu->cu_error.re_why = AUTH_INVALIDRESP;
|
|
}
|
|
if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
|
|
xdrs->x_op = XDR_FREE;
|
|
(void) xdr_opaque_auth(xdrs,
|
|
&(reply_msg.acpted_rply.ar_verf));
|
|
}
|
|
} /* end successful completion */
|
|
/*
|
|
* If unsuccesful AND error is an authentication error
|
|
* then refresh credentials and try again, else break
|
|
*/
|
|
else if (cu->cu_error.re_status == RPC_AUTHERROR)
|
|
/* maybe our credentials need to be refreshed ... */
|
|
if (nrefreshes > 0 &&
|
|
AUTH_REFRESH(cl->cl_auth, &reply_msg)) {
|
|
nrefreshes--;
|
|
goto call_again;
|
|
}
|
|
/* end of unsuccessful completion */
|
|
} /* end of valid reply message */
|
|
else {
|
|
cu->cu_error.re_status = RPC_CANTDECODERES;
|
|
|
|
}
|
|
out:
|
|
if (cu->cu_kq >= 0)
|
|
_close(cu->cu_kq);
|
|
cu->cu_kq = -1;
|
|
release_fd_lock(cu->cu_fd, mask);
|
|
return (cu->cu_error.re_status);
|
|
}
|
|
|
|
static void
|
|
clnt_dg_geterr(cl, errp)
|
|
CLIENT *cl;
|
|
struct rpc_err *errp;
|
|
{
|
|
struct cu_data *cu = (struct cu_data *)cl->cl_private;
|
|
|
|
*errp = cu->cu_error;
|
|
}
|
|
|
|
static bool_t
|
|
clnt_dg_freeres(cl, xdr_res, res_ptr)
|
|
CLIENT *cl;
|
|
xdrproc_t xdr_res;
|
|
void *res_ptr;
|
|
{
|
|
struct cu_data *cu = (struct cu_data *)cl->cl_private;
|
|
XDR *xdrs = &(cu->cu_outxdrs);
|
|
bool_t dummy;
|
|
sigset_t mask;
|
|
sigset_t newmask;
|
|
|
|
sigfillset(&newmask);
|
|
thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
|
|
mutex_lock(&clnt_fd_lock);
|
|
while (dg_fd_locks[cu->cu_fd])
|
|
cond_wait(&dg_cv[cu->cu_fd], &clnt_fd_lock);
|
|
xdrs->x_op = XDR_FREE;
|
|
dummy = (*xdr_res)(xdrs, res_ptr);
|
|
mutex_unlock(&clnt_fd_lock);
|
|
thr_sigsetmask(SIG_SETMASK, &mask, NULL);
|
|
cond_signal(&dg_cv[cu->cu_fd]);
|
|
return (dummy);
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
static void
|
|
clnt_dg_abort(h)
|
|
CLIENT *h;
|
|
{
|
|
}
|
|
|
|
static bool_t
|
|
clnt_dg_control(cl, request, info)
|
|
CLIENT *cl;
|
|
u_int request;
|
|
void *info;
|
|
{
|
|
struct cu_data *cu = (struct cu_data *)cl->cl_private;
|
|
struct netbuf *addr;
|
|
sigset_t mask;
|
|
sigset_t newmask;
|
|
int rpc_lock_value;
|
|
|
|
sigfillset(&newmask);
|
|
thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
|
|
mutex_lock(&clnt_fd_lock);
|
|
while (dg_fd_locks[cu->cu_fd])
|
|
cond_wait(&dg_cv[cu->cu_fd], &clnt_fd_lock);
|
|
if (__isthreaded)
|
|
rpc_lock_value = 1;
|
|
else
|
|
rpc_lock_value = 0;
|
|
dg_fd_locks[cu->cu_fd] = rpc_lock_value;
|
|
mutex_unlock(&clnt_fd_lock);
|
|
switch (request) {
|
|
case CLSET_FD_CLOSE:
|
|
cu->cu_closeit = TRUE;
|
|
release_fd_lock(cu->cu_fd, mask);
|
|
return (TRUE);
|
|
case CLSET_FD_NCLOSE:
|
|
cu->cu_closeit = FALSE;
|
|
release_fd_lock(cu->cu_fd, mask);
|
|
return (TRUE);
|
|
}
|
|
|
|
/* for other requests which use info */
|
|
if (info == NULL) {
|
|
release_fd_lock(cu->cu_fd, mask);
|
|
return (FALSE);
|
|
}
|
|
switch (request) {
|
|
case CLSET_TIMEOUT:
|
|
if (time_not_ok((struct timeval *)info)) {
|
|
release_fd_lock(cu->cu_fd, mask);
|
|
return (FALSE);
|
|
}
|
|
cu->cu_total = *(struct timeval *)info;
|
|
break;
|
|
case CLGET_TIMEOUT:
|
|
*(struct timeval *)info = cu->cu_total;
|
|
break;
|
|
case CLGET_SERVER_ADDR: /* Give him the fd address */
|
|
/* Now obsolete. Only for backward compatibility */
|
|
(void) memcpy(info, &cu->cu_raddr, (size_t)cu->cu_rlen);
|
|
break;
|
|
case CLSET_RETRY_TIMEOUT:
|
|
if (time_not_ok((struct timeval *)info)) {
|
|
release_fd_lock(cu->cu_fd, mask);
|
|
return (FALSE);
|
|
}
|
|
cu->cu_wait = *(struct timeval *)info;
|
|
break;
|
|
case CLGET_RETRY_TIMEOUT:
|
|
*(struct timeval *)info = cu->cu_wait;
|
|
break;
|
|
case CLGET_FD:
|
|
*(int *)info = cu->cu_fd;
|
|
break;
|
|
case CLGET_SVC_ADDR:
|
|
addr = (struct netbuf *)info;
|
|
addr->buf = &cu->cu_raddr;
|
|
addr->len = cu->cu_rlen;
|
|
addr->maxlen = sizeof cu->cu_raddr;
|
|
break;
|
|
case CLSET_SVC_ADDR: /* set to new address */
|
|
addr = (struct netbuf *)info;
|
|
if (addr->len < sizeof cu->cu_raddr) {
|
|
release_fd_lock(cu->cu_fd, mask);
|
|
return (FALSE);
|
|
}
|
|
(void) memcpy(&cu->cu_raddr, addr->buf, addr->len);
|
|
cu->cu_rlen = addr->len;
|
|
break;
|
|
case CLGET_XID:
|
|
/*
|
|
* use the knowledge that xid is the
|
|
* first element in the call structure *.
|
|
* This will get the xid of the PREVIOUS call
|
|
*/
|
|
*(u_int32_t *)info =
|
|
ntohl(*(u_int32_t *)(void *)cu->cu_outbuf);
|
|
break;
|
|
|
|
case CLSET_XID:
|
|
/* This will set the xid of the NEXT call */
|
|
*(u_int32_t *)(void *)cu->cu_outbuf =
|
|
htonl(*(u_int32_t *)info - 1);
|
|
/* decrement by 1 as clnt_dg_call() increments once */
|
|
break;
|
|
|
|
case CLGET_VERS:
|
|
/*
|
|
* This RELIES on the information that, in the call body,
|
|
* the version number field is the fifth field from the
|
|
* begining of the RPC header. MUST be changed if the
|
|
* call_struct is changed
|
|
*/
|
|
*(u_int32_t *)info =
|
|
ntohl(*(u_int32_t *)(void *)(cu->cu_outbuf +
|
|
4 * BYTES_PER_XDR_UNIT));
|
|
break;
|
|
|
|
case CLSET_VERS:
|
|
*(u_int32_t *)(void *)(cu->cu_outbuf + 4 * BYTES_PER_XDR_UNIT)
|
|
= htonl(*(u_int32_t *)info);
|
|
break;
|
|
|
|
case CLGET_PROG:
|
|
/*
|
|
* This RELIES on the information that, in the call body,
|
|
* the program number field is the fourth field from the
|
|
* begining of the RPC header. MUST be changed if the
|
|
* call_struct is changed
|
|
*/
|
|
*(u_int32_t *)info =
|
|
ntohl(*(u_int32_t *)(void *)(cu->cu_outbuf +
|
|
3 * BYTES_PER_XDR_UNIT));
|
|
break;
|
|
|
|
case CLSET_PROG:
|
|
*(u_int32_t *)(void *)(cu->cu_outbuf + 3 * BYTES_PER_XDR_UNIT)
|
|
= htonl(*(u_int32_t *)info);
|
|
break;
|
|
case CLSET_ASYNC:
|
|
cu->cu_async = *(int *)info;
|
|
break;
|
|
case CLSET_CONNECT:
|
|
cu->cu_connect = *(int *)info;
|
|
break;
|
|
default:
|
|
release_fd_lock(cu->cu_fd, mask);
|
|
return (FALSE);
|
|
}
|
|
release_fd_lock(cu->cu_fd, mask);
|
|
return (TRUE);
|
|
}
|
|
|
|
static void
|
|
clnt_dg_destroy(cl)
|
|
CLIENT *cl;
|
|
{
|
|
struct cu_data *cu = (struct cu_data *)cl->cl_private;
|
|
int cu_fd = cu->cu_fd;
|
|
sigset_t mask;
|
|
sigset_t newmask;
|
|
|
|
sigfillset(&newmask);
|
|
thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
|
|
mutex_lock(&clnt_fd_lock);
|
|
while (dg_fd_locks[cu_fd])
|
|
cond_wait(&dg_cv[cu_fd], &clnt_fd_lock);
|
|
if (cu->cu_closeit)
|
|
(void)_close(cu_fd);
|
|
if (cu->cu_kq >= 0)
|
|
_close(cu->cu_kq);
|
|
XDR_DESTROY(&(cu->cu_outxdrs));
|
|
mem_free(cu, (sizeof (*cu) + cu->cu_sendsz + cu->cu_recvsz));
|
|
if (cl->cl_netid && cl->cl_netid[0])
|
|
mem_free(cl->cl_netid, strlen(cl->cl_netid) +1);
|
|
if (cl->cl_tp && cl->cl_tp[0])
|
|
mem_free(cl->cl_tp, strlen(cl->cl_tp) +1);
|
|
mem_free(cl, sizeof (CLIENT));
|
|
mutex_unlock(&clnt_fd_lock);
|
|
thr_sigsetmask(SIG_SETMASK, &mask, NULL);
|
|
cond_signal(&dg_cv[cu_fd]);
|
|
}
|
|
|
|
static struct clnt_ops *
|
|
clnt_dg_ops()
|
|
{
|
|
static struct clnt_ops ops;
|
|
extern mutex_t ops_lock;
|
|
sigset_t mask;
|
|
sigset_t newmask;
|
|
|
|
/* VARIABLES PROTECTED BY ops_lock: ops */
|
|
|
|
sigfillset(&newmask);
|
|
thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
|
|
mutex_lock(&ops_lock);
|
|
if (ops.cl_call == NULL) {
|
|
ops.cl_call = clnt_dg_call;
|
|
ops.cl_abort = clnt_dg_abort;
|
|
ops.cl_geterr = clnt_dg_geterr;
|
|
ops.cl_freeres = clnt_dg_freeres;
|
|
ops.cl_destroy = clnt_dg_destroy;
|
|
ops.cl_control = clnt_dg_control;
|
|
}
|
|
mutex_unlock(&ops_lock);
|
|
thr_sigsetmask(SIG_SETMASK, &mask, NULL);
|
|
return (&ops);
|
|
}
|
|
|
|
/*
|
|
* Make sure that the time is not garbage. -1 value is allowed.
|
|
*/
|
|
static bool_t
|
|
time_not_ok(t)
|
|
struct timeval *t;
|
|
{
|
|
return (t->tv_sec < -1 || t->tv_sec > 100000000 ||
|
|
t->tv_usec < -1 || t->tv_usec > 1000000);
|
|
}
|
|
|