xref: /dragonfly/usr.bin/rpcgen/rpc_svcout.c (revision 19fe1c42)

/*
 * 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
 *
 * @(#)rpc_svcout.c	1.4	90/04/13 SMI; 1.29 89/03/30 (C) 1987 SMI
 * $FreeBSD: src/usr.bin/rpcgen/rpc_svcout.c,v 1.26 2008/08/12 13:38:06 dfr Exp $
 * $DragonFly: src/usr.bin/rpcgen/rpc_svcout.c,v 1.5 2008/10/16 01:52:33 swildner Exp $
 */

/*
 * rpc_svcout.c, Server-skeleton outputter for the RPC protocol compiler
 * Copyright (C) 1987, Sun Microsystems, Inc.
 */
#include <stdio.h>
#include <string.h>
#include "rpc_parse.h"
#include "rpc_scan.h"
#include "rpc_util.h"

static char RQSTP[] = "rqstp";
static char TRANSP[] = "transp";
static char ARG[] = "argument";
static char RESULT[] = "result";
static char ROUTINE[] = "local";
static char RETVAL[] = "retval";

char _errbuf[256];	/* For all messages */

void		internal_proctype(proc_list *);
static void	write_real_program(definition *);
static void	write_program(definition *, const char *);
static void	printerr(const char *, const char *);
static void	printif(const char *, const char *, const char *, const char *);
static void	write_inetmost(const char *);
static void	print_return(const char *);
static void	print_pmapunset(const char *);
static void	print_err_message(const char *);
static void	write_timeout_func(void);
static void	write_pm_most(const char *, int);
static void	write_rpc_svc_fg(const char *, const char *);
static void	open_log_file(const char *, const char *);
static void	write_msg_out(void);


static void
p_xdrfunc(const char *rname, const char *typename)
{
	f_print(fout, "\t\txdr_%s = (xdrproc_t) xdr_%s;\n",
	    rname, stringfix(typename));
}

void
internal_proctype(proc_list *plist)
{
	f_print(fout, "static ");
	ptype(plist->res_prefix, plist->res_type, 1);
	f_print(fout, "*");
}


/*
 * write most of the service, that is, everything but the registrations.
 */
void
write_most(const char *infile, int netflag, int nomain)
{
	if (inetdflag || pmflag) {
		const char *var_type;
		var_type = (nomain? "extern" : "static");
		f_print(fout, "%s int _rpcpmstart;", var_type);
		f_print(fout, "\t\t/* Started by a port monitor ? */\n");
		if (!tirpcflag || tirpc_socket) {
			f_print(fout, "%s int _rpcfdtype;", var_type);
			f_print(fout, "\n\t\t /* Whether Stream or "
				"Datagram ? */\n");
		}

		if (timerflag) {
			f_print(fout, "	/* States a server can be in "
				"wrt request */\n\n");
			f_print(fout, "#define\t_IDLE 0\n");
			f_print(fout, "#define\t_SERVED 1\n");
			f_print(fout, "#define\t_SERVING 2\n\n");
			f_print(fout, "static int _rpcsvcstate = _IDLE;");
			f_print(fout, "\t /* Set when a request is "
				"serviced */\n");

			if (mtflag) {
				f_print(fout, "pthread_mutex_t _svcstate_lock;");
				f_print(fout, "\t\t\t/* Mutex lock for "
					"variable _rpcsvcstate */\n");

			}

		}

		write_svc_aux(nomain);
	}
	/* write out dispatcher and stubs */
	write_programs((char *)NULL);

	if (nomain)
		return;

	f_print(fout, "\nint\n");
	f_print(fout, "main()\n");
	f_print(fout, "{\n");
	if (inetdflag) {
		write_inetmost(infile);
		/* Includes call to write_rpc_svc_fg() */
	} else {
		if (tirpcflag) {
			if (netflag) {
				f_print(fout,
					"\tregister SVCXPRT *%s;\n", TRANSP);
				f_print(fout,
					"\tstruct netconfig *nconf = NULL;\n");
			}
			f_print(fout, "\tpid_t pid;\n");
			f_print(fout, "\tint i;\n");
			if (pmflag) {
				if (tirpc_socket) {
					f_print(fout, "\tstruct sockaddr_storage saddr;\n");
					f_print(fout, "\tsocklen_t asize = sizeof (saddr);\n\n");
				} else
					f_print(fout, "\tchar mname[FMNAMESZ + 1];\n\n");
			}

			if (mtflag & timerflag)
				f_print(fout, "\tmutex_init(&_svcstate_lock, "
					"USYNC_THREAD, NULL);\n");
			if (pmflag) {
				write_pm_most(infile, netflag);
				f_print(fout, "\telse {\n");
				write_rpc_svc_fg(infile, "\t\t");
				f_print(fout, "\t}\n");
			} else
				write_rpc_svc_fg(infile, "\t\t");

		} else {
			f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP);
			f_print(fout, "\n");
			print_pmapunset("\t");
		}
	}

	if (logflag && !inetdflag)
		open_log_file(infile, "\t");
}

/*
 * write a registration for the given transport
 */
void
write_netid_register(const char *transp)
{
	list *l;
	definition *def;
	version_list *vp;
	const char *sp;
	char tmpbuf[32];

	sp = "";
	f_print(fout, "\n");
	f_print(fout, "%s\tnconf = getnetconfigent(\"%s\");\n", sp, transp);
	f_print(fout, "%s\tif (nconf == NULL) {\n", sp);
	sprintf(_errbuf, "cannot find %s netid.", transp);
	sprintf(tmpbuf, "%s\t\t", sp);
	print_err_message(tmpbuf);
	f_print(fout, "%s\t\texit(1);\n", sp);
	f_print(fout, "%s\t}\n", sp);
	if (tirpcflag) {
		f_print(fout, "%s\t%s = svc_tli_create(RPC_ANYFD, ",
		    sp, TRANSP);
		f_print(fout,"nconf, 0, RPC_MAXDATASIZE, RPC_MAXDATASIZE);\n");
	} else {
		f_print(fout,
		    "%s\t%s = svc_tli_create(RPC_ANYFD, nconf, 0, 0, 0);\n",
		    sp, TRANSP);
	}
	f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP);
	sprintf(_errbuf, "cannot create %s service.", transp);
	print_err_message(tmpbuf);
	f_print(fout, "%s\t\texit(1);\n", sp);
	f_print(fout, "%s\t}\n", sp);

	for (l = defined; l != NULL; l = l->next) {
		def = (definition *) l->val;
		if (def->def_kind != DEF_PROGRAM)
			continue;
		for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
			f_print(fout, "%s\trpcb_unset(%s, %s, nconf);\n",
				sp, def->def_name, vp->vers_name);
			f_print(fout, "%s\tif (!svc_reg(%s, %s, %s, ",
				sp, TRANSP, def->def_name, vp->vers_name);
			pvname(def->def_name, vp->vers_num);
			f_print(fout, ", nconf)) {\n");
			sprintf(_errbuf, "unable to register (%s, %s, %s).",
				def->def_name, vp->vers_name, transp);
			print_err_message(tmpbuf);
			f_print(fout, "%s\t\texit(1);\n", sp);
			f_print(fout, "%s\t}\n", sp);
		}
	}
	f_print(fout, "%s\tfreenetconfigent(nconf);\n", sp);
}

/*
 * write a registration for the given transport for TLI
 */
void
write_nettype_register(const char *transp)
{
	list *l;
	definition *def;
	version_list *vp;

	for (l = defined; l != NULL; l = l->next) {
		def = (definition *) l->val;
		if (def->def_kind != DEF_PROGRAM)
			continue;
		for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
			f_print(fout, "\tif (!svc_create(");
			pvname(def->def_name, vp->vers_num);
			f_print(fout, ", %s, %s, \"%s\")) {\n",
				def->def_name, vp->vers_name, transp);
			sprintf(_errbuf, "unable to create (%s, %s) for %s.",
					def->def_name, vp->vers_name, transp);
			print_err_message("\t\t");
			f_print(fout, "\t\texit(1);\n");
			f_print(fout, "\t}\n");
		}
	}
}

/*
 * write the rest of the service
 */
void
write_rest(void)
{
	f_print(fout, "\n");
	if (inetdflag) {
		f_print(fout, "\tif (%s == (SVCXPRT *)NULL) {\n", TRANSP);
		sprintf(_errbuf, "could not create a handle");
		print_err_message("\t\t");
		f_print(fout, "\t\texit(1);\n");
		f_print(fout, "\t}\n");
		if (timerflag) {
			f_print(fout, "\tif (_rpcpmstart) {\n");
			f_print(fout,
				"\t\tsignal(SIGALRM, closedown);\n");
			f_print(fout, "\t\talarm(_RPCSVC_CLOSEDOWN/2);\n");
			f_print(fout, "\t}\n");
		}
	}
	f_print(fout, "\tsvc_run();\n");
	sprintf(_errbuf, "svc_run returned");
	print_err_message("\t");
	f_print(fout, "\texit(1);\n");
	f_print(fout, "\t/* NOTREACHED */\n");
	f_print(fout, "}\n");
}

void
write_programs(const char *storage)
{
	list *l;
	definition *def;

	/* write out stubs for procedure  definitions */
	for (l = defined; l != NULL; l = l->next) {
		def = (definition *) l->val;
		if (def->def_kind == DEF_PROGRAM)
			write_real_program(def);
	}

	/* write out dispatcher for each program */
	for (l = defined; l != NULL; l = l->next) {
		def = (definition *) l->val;
		if (def->def_kind == DEF_PROGRAM)
			write_program(def, storage);
	}
}

/*
 * write out definition of internal function (e.g. _printmsg_1(...))
 *  which calls server's defintion of actual function (e.g. printmsg_1(...)).
 *  Unpacks single user argument of printmsg_1 to call-by-value format
 *  expected by printmsg_1.
 */
static void
write_real_program(definition *def)
{
	version_list *vp;
	proc_list *proc;
	decl_list *l;

	if (!newstyle)
		return;  /* not needed for old style */
	for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
		for (proc = vp->procs; proc != NULL; proc = proc->next) {
			f_print(fout, "\n");
			if (!mtflag)
				internal_proctype(proc);
			else
				f_print(fout, "int");
			f_print(fout, "\n_");
			pvname(proc->proc_name, vp->vers_num);
			f_print(fout, "(");
			/* arg name */
			if (proc->arg_num > 1)
				f_print(fout, proc->args.argname);
			else
				ptype(proc->args.decls->decl.prefix,
				      proc->args.decls->decl.type, 0);
			if (mtflag) {
				f_print(fout, " *argp, void *%s, struct svc_req *%s)\n",
					RESULT, RQSTP);
			}
			else
				f_print(fout, " *argp, struct svc_req *%s)\n",
					RQSTP);

			f_print(fout, "{\n");
			f_print(fout, "\treturn (");
			pvname_svc(proc->proc_name, vp->vers_num);
			f_print(fout, "(");
			if (proc->arg_num < 2) { /* single argument */
				if (!streq(proc->args.decls->decl.type, "void"))
					f_print(fout, "*argp, "); /* non-void */
			} else {
				for (l = proc->args.decls;  l != NULL;
				     l = l->next)
					f_print(fout, "argp->%s, ",
						l->decl.name);
			}
			if (mtflag)
				f_print(fout, "%s, ",RESULT);
			f_print(fout, "%s));\n}\n", RQSTP);
		}
	}
}

static void
write_program(definition *def, const char *storage)
{
	version_list *vp;
	proc_list *proc;
	int filled;

	for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
		f_print(fout, "\n");
		if (storage != NULL)
			f_print(fout, "%s ", storage);
		f_print(fout, "void\n");
		pvname(def->def_name, vp->vers_num);

		f_print(fout, "(struct svc_req *%s, ", RQSTP);
		f_print(fout, "SVCXPRT *%s)\n", TRANSP);
		f_print(fout, "{\n");

		filled = 0;
		f_print(fout, "\tunion {\n");
		for (proc = vp->procs; proc != NULL; proc = proc->next) {
			if (proc->arg_num < 2) { /* single argument */
				if (streq(proc->args.decls->decl.type, "void"))
					continue;
				filled = 1;
				f_print(fout, "\t\t");
				ptype(proc->args.decls->decl.prefix,
				      proc->args.decls->decl.type, 0);
				pvname(proc->proc_name, vp->vers_num);
				f_print(fout, "_arg;\n");

			} else {
				filled = 1;
				f_print(fout, "\t\t%s", proc->args.argname);
				f_print(fout, " ");
				pvname(proc->proc_name, vp->vers_num);
				f_print(fout, "_arg;\n");
			}
		}
		if (!filled)
			f_print(fout, "\t\tint fill;\n");
		f_print(fout, "\t} %s;\n", ARG);

		if (mtflag) {
			f_print(fout, "\tunion {\n");
			for (proc = vp->procs; proc != NULL; proc = proc->next) {
				if (streq(proc->res_type, "void"))
					continue;
				f_print(fout, "\t\t");
				ptype(proc->res_prefix, proc->res_type, 0);
				pvname(proc->proc_name, vp->vers_num);
				f_print(fout, "_res;\n");
			}
			f_print(fout, "\t} %s;\n", RESULT);
			f_print(fout, "\tbool_t %s;\n", RETVAL);

		} else {
			f_print(fout, "\tchar *%s;\n", RESULT);
		}

		f_print(fout, "\txdrproc_t xdr_%s, xdr_%s;\n", ARG, RESULT);
		if (mtflag)
			f_print(fout,
				"\tbool_t (*%s)(char *, void *, struct svc_req *);\n",
				ROUTINE);
		else
			f_print(fout,
				"\tchar *(*%s)(char *, struct svc_req *);\n",
				ROUTINE);
		f_print(fout, "\n");

		if (timerflag) {
			if (mtflag)
				f_print(fout, "\tpthread_mutex_lock(&_svcstate_lock);\n");

			f_print(fout, "\t_rpcsvcstate = _SERVING;\n");
			if (mtflag)
				f_print(fout, "\tpthread_mutex_unlock(&_svcstate_lock);\n");
		}

		f_print(fout, "\tswitch (%s->rq_proc) {\n", RQSTP);
		if (!nullproc(vp->procs)) {
			f_print(fout, "\tcase NULLPROC:\n");
			f_print(fout,
				"\t\tsvc_sendreply(%s,\n\t\t\t"
				"(xdrproc_t) xdr_void, (char *)NULL);\n",
				TRANSP);
			print_return("\t\t");
			f_print(fout, "\n");
		}
		for (proc = vp->procs; proc != NULL; proc = proc->next) {
			f_print(fout, "\tcase %s:\n", proc->proc_name);
			if (proc->arg_num < 2) {
				/* single argument */
				p_xdrfunc(ARG, proc->args.decls->decl.type);
			} else {
				p_xdrfunc(ARG, proc->args.argname);
			}
			p_xdrfunc(RESULT, proc->res_type);

			if (mtflag)
				f_print(fout,
					"\t\t%s = (bool_t (*) (char *,  void *,  struct svc_req *))",
					ROUTINE);
			else
				f_print(fout,
					"\t\t%s = (char *(*)(char *, struct svc_req *)) ",
					ROUTINE);
			if (newstyle) { /* new style: calls internal routine */
				f_print(fout, "_");
			}
			if (!newstyle)
				pvname_svc(proc->proc_name, vp->vers_num);
			else
				pvname(proc->proc_name, vp->vers_num);
			f_print(fout, ";\n");
			f_print(fout, "\t\tbreak;\n\n");
		}
		f_print(fout, "\tdefault:\n");
		printerr("noproc", TRANSP);
		print_return("\t\t");
		f_print(fout, "\t}\n");

		f_print(fout, "\tmemset((char *)&%s, 0, sizeof (%s));\n",
			ARG, ARG);
		printif("getargs", TRANSP, "(caddr_t) &", ARG);
		printerr("decode", TRANSP);
		print_return("\t\t");
		f_print(fout, "\t}\n");

		if (!mtflag)
			f_print(fout, "\t%s = (*%s)((char *)&%s, %s);\n",
				RESULT, ROUTINE, ARG, RQSTP);
		else
			f_print(fout, "\t%s = (bool_t) (*%s)((char *)&%s, (void *)&%s, %s);\n",
				RETVAL, ROUTINE, ARG, RESULT, RQSTP);


		if (mtflag)
			f_print(fout,
				"\tif (%s > 0 && !svc_sendreply(%s, xdr_%s, (char *)&%s)) {\n",
				RETVAL, TRANSP, RESULT, RESULT);
		else
			f_print(fout,
				"\tif (%s != NULL && !svc_sendreply(%s, xdr_%s, %s)) {\n",
				RESULT, TRANSP, RESULT, RESULT);

		printerr("systemerr", TRANSP);
		f_print(fout, "\t}\n");

		printif("freeargs", TRANSP, "(caddr_t) &", ARG);
		sprintf(_errbuf, "unable to free arguments");
		print_err_message("\t\t");
		f_print(fout, "\t\texit(1);\n");
		f_print(fout, "\t}\n");
		/* print out free routine */
		if (mtflag) {
			f_print(fout,"\tif (!");
			pvname(def->def_name, vp->vers_num);
			f_print(fout,"_freeresult(%s, xdr_%s, (caddr_t) &%s))\n",
				TRANSP, RESULT, RESULT);
			sprintf(_errbuf, "unable to free results");
			print_err_message("\t\t");
			f_print(fout, "\n");
		};
		print_return("\t");
		f_print(fout, "}\n");
	}
}

static void
printerr(const char *err, const char *transp)
{
	f_print(fout, "\t\tsvcerr_%s(%s);\n", err, transp);
}

static void
printif(const char *proc, const char *transp, const char *prefix,
    const char *arg)
{
	f_print(fout, "\tif (!svc_%s(%s, xdr_%s, (char *)%s%s)) {\n",
		proc, transp, arg, prefix, arg);
}

int
nullproc(proc_list *proc)
{
	for (; proc != NULL; proc = proc->next) {
		if (streq(proc->proc_num, "0"))
			return(1);
	}
	return(0);
}

static void
write_inetmost(const char *infile)
{
	f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP);
	f_print(fout, "\tint sock;\n");
	f_print(fout, "\tint proto;\n");
	f_print(fout, "\tstruct sockaddr_in saddr;\n");
	f_print(fout, "\tsocklen_t asize = sizeof (saddr);\n");
	f_print(fout, "\n");
	f_print(fout, "\tif (getsockname(0, "
		"(struct sockaddr *)&saddr, &asize) == 0) {\n");
	f_print(fout, "\t\tsocklen_t ssize = sizeof (int);\n\n");
	f_print(fout, "\t\tif (saddr.sin_family != AF_INET)\n");
	f_print(fout, "\t\t\texit(1);\n");
	f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n");
	f_print(fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n");
	f_print(fout, "\t\t\texit(1);\n");
	f_print(fout, "\t\tsock = 0;\n");
	f_print(fout, "\t\t_rpcpmstart = 1;\n");
	f_print(fout, "\t\tproto = 0;\n");
	open_log_file(infile, "\t\t");
	f_print(fout, "\t} else {\n");
	write_rpc_svc_fg(infile, "\t\t");
	f_print(fout, "\t\tsock = RPC_ANYSOCK;\n");
	print_pmapunset("\t\t");
	f_print(fout, "\t}\n");
}

static void
print_return(const char *space)
{
	if (exitnow)
		f_print(fout, "%sexit(0);\n", space);
	else {
		if (timerflag) {
			if (mtflag)
				f_print(fout, "%spthread_mutex_lock(&_svcstate_lock);\n", space);
				f_print(fout, "%s_rpcsvcstate = _SERVED;\n", space);
			if (mtflag)
				f_print(fout, "%spthread_mutex_unlock(&_svcstate_lock);\n", space);
		}
		f_print(fout, "%sreturn;\n", space);
	}
}

static void
print_pmapunset(const char *space)
{
	list *l;
	definition *def;
	version_list *vp;

	for (l = defined; l != NULL; l = l->next) {
		def = (definition *) l->val;
		if (def->def_kind == DEF_PROGRAM) {
			for (vp = def->def.pr.versions; vp != NULL;
					vp = vp->next) {
				f_print(fout, "%spmap_unset(%s, %s);\n",
					space, def->def_name, vp->vers_name);
			}
		}
	}
}

static void
print_err_message(const char *space)
{
	if (logflag)
		f_print(fout, "%ssyslog(LOG_ERR, \"%s\");\n", space, _errbuf);
	else if (inetdflag || pmflag)
		f_print(fout, "%s_msgout(\"%s\");\n", space, _errbuf);
	else
		f_print(fout, "%sfprintf(stderr, \"%s\");\n", space, _errbuf);
}

/*
 * Write the server auxiliary function (_msgout, timeout)
 */
void
write_svc_aux(int nomain)
{
	if (!logflag)
		write_msg_out();
	if (!nomain)
		write_timeout_func();
}

/*
 * Write the _msgout function
 */

static void
write_msg_out(void)
{
	f_print(fout, "\n");
/*
 * Avoid making _msgout() static -- it's useful to have it visible
 * in the toplevel RPC server code.
 */
	f_print(fout, "static\n");
	f_print(fout, "void _msgout(const char* msg)\n");
	f_print(fout, "{\n");
	f_print(fout, "#ifdef RPC_SVC_FG\n");
	if (inetdflag || pmflag)
		f_print(fout, "\tif (_rpcpmstart)\n");
	f_print(fout, "\t\tsyslog(LOG_ERR, \"%%s\", msg);\n");
	f_print(fout, "\telse\n");
	f_print(fout,
		"\t\tfprintf(stderr, \"%%s\\n\", msg);\n");
	f_print(fout, "#else\n");
	f_print(fout, "\tsyslog(LOG_ERR, \"%%s\", msg);\n");
	f_print(fout, "#endif\n");
	f_print(fout, "}\n");
}

/*
 * Write the timeout function
 */
static void
write_timeout_func(void)
{
	if (!timerflag)
		return;

	f_print(fout, "\n");
	f_print(fout, "static void\n");
	f_print(fout, "closedown(int sig)\n");
	f_print(fout, "{\n");
	if (mtflag)
		f_print(fout, "\tpthread_mutex_lock(&_svcstate_lock);\n");
	f_print(fout, "\tif (_rpcsvcstate == _IDLE) {\n");
	f_print(fout, "\t\textern fd_set svc_fdset;\n");
	f_print(fout, "\t\tstatic int size;\n");
	f_print(fout, "\t\tint i, openfd;\n");
	if (tirpcflag && pmflag) {
		f_print(fout, "\t\tstruct t_info tinfo;\n\n");
		f_print(fout,
			"\t\tif (!t_getinfo(0, &tinfo) && (tinfo.servtype == T_CLTS))\n");
	} else {
		f_print(fout, "\n\t\tif (_rpcfdtype == SOCK_DGRAM)\n");
	}
	f_print(fout, "\t\t\texit(0);\n");
	f_print(fout, "\t\tif (size == 0) {\n");
	if (tirpcflag) {
		f_print(fout, "\t\t\tstruct rlimit rl;\n\n");
		f_print(fout, "\t\t\trl.rlim_max = 0;\n");
		f_print(fout, "\t\t\tgetrlimit(RLIMIT_NOFILE, &rl);\n");
		f_print(fout, "\t\t\tif ((size = rl.rlim_max) == 0) {\n");

		if (mtflag)
			f_print(fout, "\t\t\t\tpthread_mutex_unlock(&_svcstate_lock);\n");

		f_print(fout, "\t\t\t\treturn;\n\t\t\t}\n");
	} else {
		f_print(fout, "\t\t\tsize = getdtablesize();\n");
	}
	f_print(fout, "\t\t}\n");
	f_print(fout,
		"\t\tfor (i = 0, openfd = 0; i < size && openfd < 2; i++)\n");
	f_print(fout, "\t\t\tif (FD_ISSET(i, &svc_fdset))\n");
	f_print(fout, "\t\t\t\topenfd++;\n");
	f_print(fout, "\t\tif (openfd <= 1)\n");
	f_print(fout, "\t\t\texit(0);\n");
	f_print(fout, "\t}\n");
	f_print(fout, "\tif (_rpcsvcstate == _SERVED)\n");
	f_print(fout, "\t\t_rpcsvcstate = _IDLE;\n\n");
	if (mtflag)
		f_print(fout, "\tpthread_mutex_unlock(&_svcstate_lock);\n");

	f_print(fout, "\tsignal(SIGALRM, closedown);\n");
	f_print(fout, "\talarm(_RPCSVC_CLOSEDOWN/2);\n");
	f_print(fout, "}\n");

}

/*
 * Write the most of port monitor support
 */
static void
write_pm_most(const char *infile, int netflag)
{
	list *l;
	definition *def;
	version_list *vp;

	if (tirpc_socket) {
		f_print(fout,
		"\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n");
		f_print(fout, "\t\tsocklen_t ssize = sizeof (int);\n");
	} else {
		f_print(fout, "\tif (!ioctl(0, I_LOOK, mname) &&\n");
		f_print(fout, "\t\t(!strcmp(mname, \"sockmod\") ||");
		f_print(fout, " !strcmp(mname, \"timod\"))) {\n");
	}
	f_print(fout, "\t\tchar *netid;\n");
	if (!netflag) {	/* Not included by -n option */
		f_print(fout, "\t\tstruct netconfig *nconf = NULL;\n");
		f_print(fout, "\t\tSVCXPRT *%s;\n", TRANSP);
	}
	if (timerflag)
		f_print(fout, "\t\tint pmclose;\n");
/*
 *  Not necessary, defined in /usr/include/stdlib
 *  f_print(fout, "\t\textern char *getenv();\n");
 */
	f_print(fout, "\n");
	if (tirpc_socket) {
		f_print(fout, "\t\tif (saddr.ss_family != AF_INET &&\n");
		f_print(fout, "\t\t    saddr.ss_family != AF_INET6)\n");
		f_print(fout, "\t\t\texit(1);\n");
		f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n");
		f_print(fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n");
		f_print(fout, "\t\t\texit(1);\n");
	}
	f_print(fout, "\t\t_rpcpmstart = 1;\n");
	open_log_file(infile, "\t\t");
	f_print(fout, "\n\t\tif ((netid = \
getenv(\"NLSPROVIDER\")) == NULL) {\n");

	if (timerflag) {
		f_print(fout, "\t\t/* started from inetd */\n");
		f_print(fout, "\t\t\tpmclose = 1;\n");
	}
	f_print(fout,
		"\t\t} else {\n");
	f_print(fout, "\t\t\tif ((nconf = getnetconfigent(netid)) == NULL)\n");
	sprintf(_errbuf, "cannot get transport info");
	print_err_message("\t\t\t\t");
       if (timerflag) {
		if (tirpc_socket)
			f_print(fout, "\n\t\t\tpmclose = 1;\t/* XXX */\n");
		else
			f_print(fout,
			    "\n\t\t\tpmclose = (t_getstate(0) != T_DATAXFER);\n");
	}
	f_print(fout, "\t\t}\n");
	/*
	 * A kludgy support for inetd services. Inetd only works with
	 * sockmod, and RPC works only with timod, hence all this jugglery
	 */
	if (!tirpc_socket) {
		f_print(fout, "\t\tif (strcmp(mname, \"sockmod\") == 0) {\n");
		f_print(fout, "\t\t\tif (ioctl(0, I_POP, 0) || ");
		f_print(fout, "ioctl(0, I_PUSH, \"timod\")) {\n");
		sprintf(_errbuf, "could not get the right module");
		print_err_message("\t\t\t\t");
		f_print(fout, "\t\t\t\texit(1);\n");
		f_print(fout, "\t\t\t}\n");
		f_print(fout, "\t\t}\n");
	}
	if (tirpcflag) {
		f_print(fout,
		"\t\tif ((%s = svc_tli_create(0, nconf, NULL, \
		RPC_MAXDATASIZE, RPC_MAXDATASIZE)) \
		== NULL) {\n",
		TRANSP);
	} else {
		f_print(fout,
		    "\t\tif ((%s = svc_tli_create(0, nconf, NULL, 0, 0)) \
		    == NULL) {\n",
                    TRANSP);
	}
	sprintf(_errbuf, "cannot create server handle");
	print_err_message("\t\t\t");
	f_print(fout, "\t\t\texit(1);\n");
	f_print(fout, "\t\t}\n");
	f_print(fout, "\t\tif (nconf)\n");
	f_print(fout, "\t\t\tfreenetconfigent(nconf);\n");
	for (l = defined; l != NULL; l = l->next) {
		def = (definition *) l->val;
		if (def->def_kind != DEF_PROGRAM)
			continue;
		for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
			f_print(fout, "\t\tif (!svc_reg(%s, %s, %s, ",
				TRANSP, def->def_name, vp->vers_name);
			pvname(def->def_name, vp->vers_num);
			f_print(fout, ", 0)) {\n");
			sprintf(_errbuf, "unable to register (%s, %s).",
				def->def_name, vp->vers_name);
			print_err_message("\t\t\t");
			f_print(fout, "\t\t\texit(1);\n");
			f_print(fout, "\t\t}\n");
		}
	}
	if (timerflag) {
		f_print(fout, "\t\tif (pmclose) {\n");
		f_print(fout, "\t\t\tsignal(SIGALRM, closedown);\n");
		f_print(fout, "\t\t\talarm(_RPCSVC_CLOSEDOWN/2);\n");
		f_print(fout, "\t\t}\n");
	}
	f_print(fout, "\t\tsvc_run();\n");
	f_print(fout, "\t\texit(1);\n");
	f_print(fout, "\t\t/* NOTREACHED */\n");
	f_print(fout, "\t}");
}

/*
 * Support for backgrounding the server if self started.
 */
static void
write_rpc_svc_fg(const char *infile, const char *sp)
{
	f_print(fout, "#ifndef RPC_SVC_FG\n");
	f_print(fout, "%sint size;\n", sp);
	if (tirpcflag)
		f_print(fout, "%sstruct rlimit rl;\n", sp);
	if (inetdflag)
		f_print(fout, "%sint pid, i;\n\n", sp);
	f_print(fout, "%spid = fork();\n", sp);
	f_print(fout, "%sif (pid < 0) {\n", sp);
	f_print(fout, "%s\tperror(\"cannot fork\");\n", sp);
	f_print(fout, "%s\texit(1);\n", sp);
	f_print(fout, "%s}\n", sp);
	f_print(fout, "%sif (pid)\n", sp);
	f_print(fout, "%s\texit(0);\n", sp);
	/* get number of file descriptors */
	if (tirpcflag) {
		f_print(fout, "%srl.rlim_max = 0;\n", sp);
		f_print(fout, "%sgetrlimit(RLIMIT_NOFILE, &rl);\n", sp);
		f_print(fout, "%sif ((size = rl.rlim_max) == 0)\n", sp);
		f_print(fout, "%s\texit(1);\n", sp);
	} else {
		f_print(fout, "%ssize = getdtablesize();\n", sp);
	}

	f_print(fout, "%sfor (i = 0; i < size; i++)\n", sp);
	f_print(fout, "%s\tclose(i);\n", sp);
	/* Redirect stderr and stdout to console */
	f_print(fout, "%si = open(\"/dev/console\", 2);\n", sp);
	f_print(fout, "%sdup2(i, 1);\n", sp);
	f_print(fout, "%sdup2(i, 2);\n", sp);
	/* This removes control of the controlling terminal */
	if (tirpcflag) {
		f_print(fout, "%ssetsid();\n", sp);
	} else {
		f_print(fout, "%si = open(\"/dev/tty\", 2);\n", sp);
		f_print(fout, "%sif (i >= 0) {\n", sp);
		f_print(fout,
			"%s\tioctl(i, TIOCNOTTY, (char *)NULL);\n", sp);
		f_print(fout, "%s\tclose(i);\n", sp);
		f_print(fout, "%s}\n", sp);
	}
	if (!logflag)
		open_log_file(infile, sp);
	f_print(fout, "#endif\n");
	if (logflag)
		open_log_file(infile, sp);
}

static void
open_log_file(const char *infile, const char *sp)
{
	char *s;

	s = strrchr(infile, '.');
	if (s)
		*s = '\0';
	f_print(fout, "%sopenlog(\"%s\", LOG_PID, LOG_DAEMON);\n", sp, infile);
	if (s)
		*s = '.';
}

/*
 * write a registration for the given transport for Inetd
 */
void
write_inetd_register(const char *transp)
{
	list *l;
	definition *def;
	version_list *vp;
	const char *sp;
	int isudp;
	char tmpbuf[32];

	if (inetdflag)
		sp = "\t";
	else
		sp = "";
	if (streq(transp, "udp"))
		isudp = 1;
	else
		isudp = 0;
	f_print(fout, "\n");
	if (inetdflag) {
		f_print(fout,
			"\tif ((_rpcfdtype == 0) || (_rpcfdtype == %s)) {\n",
			isudp ? "SOCK_DGRAM" : "SOCK_STREAM");
	}
	f_print(fout, "%s\t%s = svc%s_create(%s",
		sp, TRANSP, transp, inetdflag? "sock": "RPC_ANYSOCK");
	if (!isudp)
		f_print(fout, ", 0, 0");
	f_print(fout, ");\n");
	f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP);
	sprintf(_errbuf, "cannot create %s service.", transp);
	sprintf(tmpbuf, "%s\t\t", sp);
	print_err_message(tmpbuf);
	f_print(fout, "%s\t\texit(1);\n", sp);
	f_print(fout, "%s\t}\n", sp);

	if (inetdflag) {
		f_print(fout, "%s\tif (!_rpcpmstart)\n\t", sp);
		f_print(fout, "%s\tproto = IPPROTO_%s;\n", sp,
			isudp ? "UDP": "TCP");
	}
	for (l = defined; l != NULL; l = l->next) {
		def = (definition *) l->val;
		if (def->def_kind != DEF_PROGRAM)
			continue;
		for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
			f_print(fout, "%s\tif (!svc_register(%s, %s, %s, ",
				sp, TRANSP, def->def_name, vp->vers_name);
			pvname(def->def_name, vp->vers_num);
			if (inetdflag)
				f_print(fout, ", proto)) {\n");
			else
				f_print(fout, ", IPPROTO_%s)) {\n",
					isudp ? "UDP": "TCP");
			sprintf(_errbuf, "unable to register (%s, %s, %s).",
				def->def_name, vp->vers_name, transp);
			print_err_message(tmpbuf);
			f_print(fout, "%s\t\texit(1);\n", sp);
			f_print(fout, "%s\t}\n", sp);
		}
	}
	if (inetdflag)
		f_print(fout, "\t}\n");
}