rescue

/* @(#)clnt_tcp.c	2.2 88/08/01 4.0 RPCSRC */
/*
 * 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, MERCHANTIBILITY 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
 */
#if !defined(lint) && defined(SCCSIDS)
static char sccsid[] = "@(#)clnt_tcp.c 1.37 87/10/05 Copyr 1984 Sun Micro";
#endif

/*
 * clnt_tcp.c, Implements a TCP/IP based, client side RPC.
 *
 * Copyright (C) 1984, Sun Microsystems, Inc.
 *
 * TCP based RPC supports 'batched calls'.
 * A sequence of calls may be batched-up in a send buffer.  The rpc call
 * return immediately to the client even though the call was not necessarily
 * sent.  The batching occurs if the results' xdr routine is NULL (0) AND
 * the rpc timeout value is zero (see clnt.h, rpc).
 *
 * Clients should NOT casually batch calls that in fact return results; that is,
 * the server side should be aware that a call is batched and not produce any
 * return message.  Batched calls that produce many result messages can
 * deadlock (netlock) the client and the server....
 *
 * Now go hang yourself.
 */

#include <stdio.h>
#include <rpc/rpc.h>
#include <sys/socket.h>
#include <netdb.h>
#include <errno.h>
#include <rpc/pmap_clnt.h>
#include <unistd.h>

#define MCALL_MSG_SIZE 24

extern int errno;

static int readtcp();
static int writetcp();

static enum clnt_stat clnttcp_call();
static void clnttcp_abort();
static void clnttcp_geterr();
static bool_t clnttcp_freeres();
static bool_t clnttcp_control();
static void clnttcp_destroy();

static struct clnt_ops tcp_ops = {
	clnttcp_call,
	clnttcp_abort,
	clnttcp_geterr,
	clnttcp_freeres,
	clnttcp_destroy,
	clnttcp_control
};

struct ct_data {
	int ct_sock;
	bool_t ct_closeit;
	struct timeval ct_wait;
	bool_t ct_waitset;			/* wait set by clnt_control? */
	struct sockaddr_in ct_addr;
	struct rpc_err ct_error;
	char ct_mcall[MCALL_MSG_SIZE];	/* marshalled callmsg */
	u_int ct_mpos;				/* pos after marshal */
	XDR ct_xdrs;
};

/*
 * Create a client handle for a tcp/ip connection.
Mode	Name	Size
-rw-r--r--	.cvsignore	34	log stats plain
-rw-r--r--	Makefile	187	log stats plain
-rw-r--r--	aliases	62	log stats plain
-rw-r--r--	dirs	58	log stats plain
-rw-r--r--	kernel_read_part.c	429	log stats plain
-rw-r--r--	list	1652	log stats plain
-rw-r--r--	list.alpha	0	log stats plain
-rw-r--r--	list.i386	123	log stats plain
-rw-r--r--	list.ppc	0	log stats plain
-rw-r--r--	list.sparc	11	log stats plain
-rwxr-xr-x	make_rescue_img	2093	log stats plain
d---------	tree	152	log stats plain