cmd/rpcgen/rpc_svcout.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
 * University Copyright- Copyright (c) 1982, 1986, 1988
 * The Regents of the University of California
 * All Rights Reserved
 *
 * University Acknowledgment- Portions of this document are derived from
 * software developed by the University of California, Berkeley, and its
 * contributors.
 */

/*
 * rpc_svcout.c, Server-skeleton outputter for the RPC protocol compiler
 */
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include "rpc_parse.h"
#include "rpc_util.h"

extern int nullproc(proc_list *);

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

#define	ERRBUFLEN	256

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

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

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


static void
write_mtauto(void)
{
	f_print(fout, "\tif (!rpc_control(RPC_SVC_MTMODE_SET, &mode)) {\n");
	print_err_message("\t\t", "unable to set automatic MT mode.");
	f_print(fout, "\t\texit(1);\n\t}\n");
}

/*
 * write most of the service, that is, everything but the registrations.
 */
void
write_most(char *infile, int netflag, int nomain)
{
	if (inetdflag || pmflag) {
		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) {
			f_print(fout, "%s int _rpcfdtype;", var_type);
			f_print(fout,
			    "\t\t /* Whether Stream or Datagram ? */\n");
		}

		if (timerflag) {
			f_print(fout,
"\n/* 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\n");
			if (nomain) {
				f_print(fout,
				    "/* LINTED static unused if no main */\n");
			}
			f_print(fout,
			    "static int _rpcsvcstate = _IDLE;");
			f_print(fout,
"\t/* Set when a request is serviced */\n");
			f_print(fout, "static int _rpcsvccount = 0;");
			f_print(fout,
"\t\t/* Number of requests being serviced */\n");

			if (mtflag) {
				f_print(fout, "mutex_t _svcstate_lock;");
				f_print(fout,
"\t\t/* lock for _rpcsvcstate, _rpcsvccount */\n");

			}
		}

		write_svc_aux(nomain);
	}
	/* write out dispatcher and stubs */
	write_programs(nomain ? NULL : "static");

	if (nomain)
		return;

	f_print(fout, "\nint\nmain()\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 (mtauto) {
				f_print(fout,
				    "\tint mode = RPC_SVC_MT_AUTO;\n\n");
				write_mtauto();
			} else
				f_print(fout, "\n");

			if (mtflag & timerflag)
				f_print(fout,
"\tmutex_init(&_svcstate_lock, USYNC_THREAD, NULL);\n");

			write_pm_most(infile, netflag);
			f_print(fout, "\telse {\n");
			write_rpc_svc_fg(infile, "\t\t");
			f_print(fout, "\t}\n");
		} 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(char *transp)
{
	list *l;
	definition *def;
	version_list *vp;
	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);
	(void) snprintf(tmpbuf, sizeof (tmpbuf), "%s\t\t", sp);
	print_err_message(tmpbuf, "cannot find %s netid.", transp);
	f_print(fout, "%s\t\texit(1);\n", sp);
	f_print(fout, "%s\t}\n", sp);
	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);
	print_err_message(tmpbuf, "cannot create %s service.", transp);
	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\t(void) rpcb_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");
			print_err_message(tmpbuf,
			    "unable to register (%s, %s, %s).",
			    def->def_name, vp->vers_name, transp);
			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(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(\n");
			f_print(fout, "\t    ");
			pvname(def->def_name, vp->vers_num);
			f_print(fout, ", %s, %s,\n",
			    def->def_name, vp->vers_name);
			f_print(fout, "\t    \"%s\")) {\n", transp);
			print_err_message("\t\t",
			    "unable to create (%s, %s) for %s.",
			    def->def_name, vp->vers_name, transp);
			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);
		print_err_message("\t\t", "could not create a handle");
		f_print(fout, "\t\texit(1);\n");
		f_print(fout, "\t}\n");
		if (timerflag) {
			f_print(fout, "\tif (_rpcpmstart) {\n");
			if (mtflag) {
				f_print(fout,
"\t\tif (thr_create(NULL, 0, closedown, NULL, 0, NULL) != 0) {\n");
				print_err_message("\t\t\t",
				    "cannot create closedown thread");
				f_print(fout, "\t\t\texit(1);\n");
				f_print(fout, "\t\t}\n");
				f_print(fout, "\t}\n");
			} else {
				f_print(fout,
				"\t\t(void) signal(SIGALRM, %s closedown);\n",
				    Cflag? "(SIG_PF)":"(void(*)())");
				f_print(fout,
"\t\t(void) alarm(_RPCSVC_CLOSEDOWN/2);\n");
				f_print(fout, "\t}\n");
			}
		}
	}
	f_print(fout, "\tsvc_run();\n");
	print_err_message("\t", "svc_run returned");
	f_print(fout, "\texit(1);\n");
	f_print(fout, "\t/* NOTREACHED */\n");
	f_print(fout, "}\n");
}

static void
write_programs(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) {
			int oneway = streq(proc->res_type, "oneway");

			f_print(fout, "\n");
			if (proc->arg_num < 2 &&
			    streq(proc->args.decls->decl.type, "void")) {
				f_print(fout, "/* ARGSUSED */\n");
			}
			if (!mtflag)
				internal_proctype(proc);
			else
				f_print(fout, "int");
			f_print(fout, "\n_");
			pvname(proc->proc_name, vp->vers_num);
			if (Cflag) {
				f_print(fout, "(\n");
				f_print(fout, "    ");
				/* arg name */
				if (proc->arg_num > 1)
					/* LINTED variable format */
					f_print(fout, proc->args.argname);
				else
					ptype(proc->args.decls->decl.prefix,
					    proc->args.decls->decl.type, 0);
				f_print(fout, " *argp,\n");
				if (mtflag) {
					f_print(fout, "    ");
					ptype(proc->res_prefix,
					    proc->res_type, 1);
					f_print(fout, "*%s,\n", RESULT);
				}
				f_print(fout, "    struct svc_req *%s)\n",
				    RQSTP);

			} else {
				if (mtflag)
					f_print(fout, "(argp, %s, %s)\n",
					    RESULT, RQSTP);
				else
					f_print(fout, "(argp, %s)\n", RQSTP);
				/* arg name */
				if (proc->arg_num > 1)
					f_print(fout, "\t%s *argp;\n",
					    proc->args.argname);
				else {
					f_print(fout, "\t");
					ptype(proc->args.decls->decl.prefix,
					    proc->args.decls->decl.type, 0);
					f_print(fout, " *argp;\n");
				}
				if (mtflag)
					f_print(fout, "\tvoid *%s;\n", RESULT);
				f_print(fout, "\tstruct svc_req *%s;\n", RQSTP);
			}

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

static void
write_program(definition *def, 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);

		if (Cflag) {
			f_print(fout, "(struct svc_req *%s, ", RQSTP);
			f_print(fout, "register SVCXPRT *%s)\n", TRANSP);
		} else {
			f_print(fout, "(%s, %s)\n", RQSTP, TRANSP);
			f_print(fout, "	struct svc_req *%s;\n", RQSTP);
			f_print(fout, "	register 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) {
			filled = 0;
			f_print(fout, "\tunion {\n");
			for (proc = vp->procs; proc != NULL;
			    proc = proc->next) {
				if (streq(proc->res_type, "void") ||
				    streq(proc->res_type, "oneway"))
					continue;
				filled = 1;
				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");
			}
			if (!filled)
				f_print(fout, "\t\tint fill;\n");
			f_print(fout, "\t} %s;\n", RESULT);
			f_print(fout, "\tbool_t %s;\n", RETVAL);

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

		if (Cflag) {
			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);
		} else {
			f_print(fout,
			    "\tbool_t (*_xdr_%s)(), (*_xdr_%s)();\n",
			    ARG, RESULT);
			if (mtflag)
				f_print(fout, "\tbool_t (*%s)();\n", ROUTINE);
			else
				f_print(fout, "\tchar *(*%s)();\n", ROUTINE);
		}
		f_print(fout, "\n");

		if (timerflag) {
			if (mtflag)
				f_print(fout,
"\t(void) mutex_lock(&_svcstate_lock);\n");

			f_print(fout, "\t_rpcsvccount++;\n");
			if (mtflag)
				f_print(fout,
"\t(void) 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,
			    Cflag ?
"\t\t(void) svc_sendreply(%s,\n\t\t    (xdrproc_t)xdr_void, NULL);\n" :
"\t\t(void) svc_sendreply(%s, xdr_void,\n\t\t\tNULL);\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);
			}

			if (streq(proc->res_type, "oneway")) {
				/* One-way call */
				f_print(fout, "\t\t_xdr_%s = NULL;\n", RESULT);
			} else {
				p_xdrfunc(RESULT, proc->res_type);
			}
			if (Cflag) {
				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);
				}
			} else {
				if (mtflag) {
					f_print(fout,
					    "\t\t%s = (bool_t (*)())",
					    ROUTINE);
				} else {
					f_print(fout, "\t\t%s = (char *(*)())",
					    ROUTINE);
				}
			}

			f_print(fout, "\n\t\t    ");
			if (newstyle) { /* new style: calls internal routine */
				f_print(fout, "_");
			}
			if ((Cflag || mtflag) && !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,
		    "\t(void) memset((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)
			if (Cflag)
				f_print(fout,
				    "\t%s = (*%s)((char *)&%s, %s);\n",
				    RESULT, ROUTINE, ARG, RQSTP);
			else
				f_print(fout, "\t%s = (*%s)(&%s, %s);\n",
				    RESULT, ROUTINE, ARG, RQSTP);
		else
			if (Cflag)
				f_print(fout,
"\t%s = (bool_t)(*%s)((char *)&%s, (void *)&%s, %s);\n",
				    RETVAL, ROUTINE, ARG, RESULT, RQSTP);
			else
				f_print(fout,
"\t%s = (bool_t)(*%s)(&%s, &%s, %s);\n",
				    RETVAL, ROUTINE, ARG, RESULT, RQSTP);


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

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

		printif("freeargs", TRANSP, "(caddr_t)&", ARG);
		print_err_message("\t\t", "unable to free arguments");
		f_print(fout, "\t\texit(1);\n");
		f_print(fout, "\t}\n");
		/* print out free routine */
		if (mtflag) {
			f_print(fout, "\tif (_xdr_%s != NULL) {\n", RESULT);
			f_print(fout, "\t\tif (!");

			pvname(def->def_name, vp->vers_num);
			f_print(fout, "_freeresult(%s, _xdr_%s,\n",
			    TRANSP, RESULT);
			f_print(fout, "\t\t    (caddr_t)&%s))\n",
			    RESULT);
			print_err_message("\t\t\t", "unable to free results");
			f_print(fout, "\n");
			f_print(fout, "\t}\n");
		};
		print_return("\t");
		f_print(fout, "}\n");
	}
}

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

static void
printif(char *proc, char *transp, char *prefix, char *arg)
{
	f_print(fout, "\tif (!svc_%s(%s, _xdr_%s, %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(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, "\tint asize = sizeof (saddr);\n");
	f_print(fout, "\n");
	f_print(fout,
	"\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n");
	f_print(fout, "\t\tint 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    (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(char *space)
{
	if (exitnow) {
		f_print(fout, "%sexit(0);\n", space);
		return;
	}
	if (timerflag) {
		if (mtflag) {
			f_print(fout,
			    "%s(void) mutex_lock(&_svcstate_lock);\n",
			    space);
		}
		f_print(fout, "%s_rpcsvccount--;\n", space);
		f_print(fout, "%s_rpcsvcstate = _SERVED;\n", space);
		if (mtflag) {
			f_print(fout,
			    "%s(void) mutex_unlock(&_svcstate_lock);\n",
			    space);
		}
	}
	f_print(fout, "%sreturn; /* CSTYLED */\n", space);
}

static void
print_pmapunset(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, "%s(void) pmap_unset(%s, %s);\n",
				    space, def->def_name, vp->vers_name);
			}
		}
	}
}

static void
print_err_message(const char *space, const char *fmt, ...)
{
	char errbuf[ERRBUFLEN];
	va_list va;

	va_start(va, fmt);
	(void) vsnprintf(errbuf, sizeof (errbuf), fmt, va);
	va_end(va);

	if (logflag)
		f_print(fout, "%ssyslog(LOG_ERR, \"%%s\",\n", space);
	else if (inetdflag || pmflag)
		f_print(fout, "%sRPC_MSGOUT(\"%%s\",\n", space);
	else
		f_print(fout, "%sfprintf(stderr, \"%%s\",\n", space);
	f_print(fout, "%s    \"%s\");\n", space, errbuf);
}

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

/*
 * Write the RPC_MSGOUT function
 *
 * Note that while we define RPC_MSGOUT to be printf-like, all existing
 * calls are of the form "%s","<msg>" and this implementation assumes that
 * trivial case.  If in the future it's desirable to generate richer calls
 * this implementation can change to match.  This way we don't (yet) have
 * to introduce varargs into the generated code.
 */
static void
write_msg_out(void)
{
	f_print(fout, "\n");
	f_print(fout, "#if\tdefined(RPC_MSGOUT)\n");
	if (!Cflag) {
		f_print(fout, "extern void RPC_MSGOUT();\n");
	} else {
		f_print(fout, "extern void RPC_MSGOUT(const char *, ...);\n");
	}
	f_print(fout, "#else\t/* defined(RPC_MSGOUT) */\n");
	f_print(fout, "static ");
	if (!Cflag) {
		f_print(fout, "void\nRPC_MSGOUT(fmt, msg)\n");
		f_print(fout, "\tchar *fmt;\n");
		f_print(fout, "\tchar *msg;\n");
	} else {
		f_print(fout, "void\nRPC_MSGOUT(const char *fmt, 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, fmt, msg);\n");
	f_print(fout, "\telse {\n");
	f_print(fout, "\t\t(void) fprintf(stderr, fmt, msg);\n");
	f_print(fout, "\t\t(void) putc('\\n', stderr);\n");
	f_print(fout, "\t}\n");
	f_print(fout, "#else\n");
	f_print(fout, "\tsyslog(LOG_ERR, fmt, msg);\n");
	f_print(fout, "#endif\n");
	f_print(fout, "}\n");
	f_print(fout, "#endif\t/* defined(RPC_MSGOUT) */\n");
}

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

	f_print(fout, "\n");
	if (mtflag) {
		f_print(fout, "/*ARGSUSED*/\n");
		f_print(fout, "static void *\n");
		if (!Cflag) {
			f_print(fout, "closedown(arg)\n");
			f_print(fout, "\tvoid *arg;\n");
		} else
			f_print(fout, "closedown(void *arg)\n");
		f_print(fout, "{\n");
		f_print(fout, "\t/*CONSTCOND*/\n");
		f_print(fout, "\twhile (1) {\n");
		f_print(fout, "\t\t(void) sleep(_RPCSVC_CLOSEDOWN/2);\n\n");
		f_print(fout,
"\t\tif (mutex_trylock(&_svcstate_lock) != 0)\n");
		f_print(fout, "\t\t\tcontinue;\n\n");
		f_print(fout,
"\t\tif (_rpcsvcstate == _IDLE && _rpcsvccount == 0) {\n");
		if (tirpcflag) {
			f_print(fout, "\t\t\tint size;\n");
		} else {
			f_print(fout, "\t\t\textern fd_set svc_fdset;\n");
			f_print(fout, "\t\t\tstatic int size;\n");
		}
		f_print(fout, "\t\t\tint i, openfd = 0;\n\n");
		if (tirpcflag) {
			f_print(fout, "\t\t\tsize = svc_max_pollfd;\n");
		} else {
			f_print(fout, "\t\t\tif (size == 0) {\n");
			f_print(fout, "\t\t\t\tsize = getdtablesize();\n");
			f_print(fout, "\t\t\t}\n");
		}
		f_print(fout,
"\t\t\tfor (i = 0; i < size && openfd < 2; i++)\n");
		if (tirpcflag) {
			f_print(fout, "\t\t\t\tif (svc_pollfd[i].fd >= 0)\n");
		} else {
			f_print(fout, "\t\t\t\tif (FD_ISSET(i, &svc_fdset))\n");
		}
		f_print(fout, "\t\t\t\t\topenfd++;\n");
		f_print(fout, "\t\t\tif (openfd <= 1)\n");
		f_print(fout, "\t\t\t\texit(0);\n");
		f_print(fout, "\t\t} else\n");
		f_print(fout, "\t\t\t_rpcsvcstate = _IDLE;\n\n");
		f_print(fout, "\t\t(void) mutex_unlock(&_svcstate_lock);\n");
		f_print(fout, "\t}\n");
		f_print(fout, "}\n");
		return;
	}

	f_print(fout, "static void\n");
	if (!Cflag) {
		f_print(fout, "closedown(sig)\n");
		f_print(fout, "\tint sig;\n");
	} else
		f_print(fout, "closedown(int sig)\n");
	f_print(fout, "{\n");
	f_print(fout, "\tif (_rpcsvcstate == _IDLE && _rpcsvccount == 0) {\n");
	if (tirpcflag) {
		f_print(fout, "\t\tint size;\n");
	} else {
		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 = 0;\n\n");
	if (tirpcflag) {
		f_print(fout, "\t\tsize = svc_max_pollfd;\n");
	} else {
		f_print(fout, "\t\tif (size == 0) {\n");
		f_print(fout, "\t\t\tsize = getdtablesize();\n");
		f_print(fout, "\t\t}\n");
	}
	f_print(fout,
	    "\t\tfor (i = 0; i < size && openfd < 2; i++)\n");
	if (tirpcflag) {
		f_print(fout, "\t\t\tif (svc_pollfd[i].fd >= 0)\n");
	} else {
		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} else\n");
	f_print(fout, "\t\t_rpcsvcstate = _IDLE;\n\n");

	f_print(fout, "\t(void) signal(SIGALRM, %s closedown);\n",
	    Cflag? "(SIG_PF)" : "(void(*)())");
	f_print(fout, "\t(void) alarm(_RPCSVC_CLOSEDOWN/2);\n");
	f_print(fout, "}\n");
}

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

	f_print(fout, "\t(void) sigset(SIGPIPE, SIG_IGN);\n\n");
	f_print(fout, "\t/*\n");
	f_print(fout, "\t * If stdin looks like a TLI endpoint, we assume\n");
	f_print(fout, "\t * that we were started by a port monitor. If\n");
	f_print(fout, "\t * t_getstate fails with TBADF, this is not a\n");
	f_print(fout, "\t * TLI endpoint.\n");
	f_print(fout, "\t */\n");
	f_print(fout, "\tif (t_getstate(0) != -1 || t_errno != TBADF) {\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");
	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");
	print_err_message("\t\t\t\t", "cannot get transport info");
	if (timerflag)
		f_print(fout,
		    "\n\t\t\tpmclose = (t_getstate(0) != T_DATAXFER);\n");
	f_print(fout, "\t\t}\n");
	f_print(fout,
"\t\tif ((%s = svc_tli_create(0, nconf, NULL, 0, 0)) == NULL) {\n",
	    TRANSP);
	print_err_message("\t\t\t", "cannot create server handle");
	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,\n",
			    TRANSP, def->def_name, vp->vers_name);
			f_print(fout, "\t\t    ");
			pvname(def->def_name, vp->vers_num);
			f_print(fout, ", 0)) {\n");
			print_err_message("\t\t\t",
			    "unable to register (%s, %s).",
			    def->def_name, vp->vers_name);
			f_print(fout, "\t\t\texit(1);\n");
			f_print(fout, "\t\t}\n");
		}
	}
	if (timerflag) {
		f_print(fout, "\t\tif (pmclose) {\n");
		if (mtflag) {
			f_print(fout,
"\t\t\tif (thr_create(NULL, 0, closedown, NULL,\n\t\t\t    0, NULL) != 0) {\n");
			print_err_message("\t\t\t\t",
			    "cannot create closedown thread");
			f_print(fout, "\t\t\t\texit(1);\n");
			f_print(fout, "\t\t\t}\n");
		} else {
			f_print(fout,
"\t\t\t(void) signal(SIGALRM, %s closedown);\n",
			    Cflag? "(SIG_PF)" : "(void(*)())");
			f_print(fout,
"\t\t\t(void) alarm(_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(char *infile, char *sp)
{
	f_print(fout, "#ifndef RPC_SVC_FG\n");
	f_print(fout, "#pragma weak closefrom\n");
	f_print(fout, "%sextern void closefrom();\n", sp);
	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);
	/* close all file descriptors */
	if (tirpcflag) {
		f_print(fout, "%sif (closefrom != NULL)\n", sp);
		f_print(fout, "%s\tclosefrom(0);\n", sp);
		f_print(fout, "%selse {\n", sp);
		f_print(fout, "%s\trl.rlim_max = 0;\n", sp);
		f_print(fout, "%s\tgetrlimit(RLIMIT_NOFILE, &rl);\n", sp);
		f_print(fout, "%s\tif ((size = rl.rlim_max) == 0)\n", sp);
		f_print(fout, "%s\t\texit(1);\n", sp);
		f_print(fout, "%s\tfor (i = 0; i < size; i++)\n", sp);
		f_print(fout, "%s\t\t(void) close(i);\n", sp);
		f_print(fout, "%s}\n", sp);
	} else {
		f_print(fout, "%s\tsize = getdtablesize();\n", sp);
		f_print(fout, "%s\tfor (i = 0; i < size; i++)\n", sp);
		f_print(fout, "%s\t\t(void) close(i);\n", sp);
	}
	/* Redirect stderr and stdout to /dev/null */
	f_print(fout, "%si = open(\"/dev/null\", 2);\n", sp);
	f_print(fout, "%s(void) dup2(i, 1);\n", sp);
	f_print(fout, "%s(void) dup2(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\t(void) ioctl(i, TIOCNOTTY, (char *)NULL);\n", sp);
		f_print(fout, "%s\t(void) close(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(char *infile, 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(char *transp)
{
	list *l;
	definition *def;
	version_list *vp;
	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);
	(void) snprintf(tmpbuf, sizeof (tmpbuf), "%s\t\t", sp);
	print_err_message(tmpbuf, "cannot create %s service.", transp);
	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,\n",
			    sp, TRANSP, def->def_name, vp->vers_name);
			f_print(fout, "%s\t    ", sp);
			pvname(def->def_name, vp->vers_num);
			if (inetdflag)
				f_print(fout, ", proto)) {\n");
			else
				f_print(fout, ", IPPROTO_%s)) {\n",
				    isudp ? "UDP": "TCP");
			print_err_message(tmpbuf,
			    "unable to register (%s, %s, %s).",
			    def->def_name, vp->vers_name, transp);
			f_print(fout, "%s\t\texit(1);\n", sp);
			f_print(fout, "%s\t}\n", sp);
		}
	}
	if (inetdflag)
		f_print(fout, "\t}\n");
}