text: /*
   * Copyright (c) 1989 Jan-Simon Pendry
   * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
   * Copyright (c) 1989, 1993
   *	The Regents of the University of California.  All rights reserved.
   *
   * This code is derived from software contributed to Berkeley by
   * Jan-Simon Pendry at Imperial College, London.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   *	from: @(#)fsinfo.c	8.1 (Berkeley) 6/6/93
   *	$Id: fsinfo.c,v 1.9 2009/10/27 23:59:51 deraadt Exp $
   */
  
  /*
   * fsinfo
   */
  
  #include "../fsinfo/fsinfo.h"
  #include "fsi_gram.h"
  #include <pwd.h>
  
  qelem *list_of_hosts;
  qelem *list_of_automounts;
  dict *dict_of_volnames;
  dict *dict_of_hosts;
  char *autodir = "/a";
  char hostname[MAXHOSTNAMELEN+1];
  char *username;
  int file_io_errors;
  int parse_errors;
  int errors;
  int verbose;
  char idvbuf[1024];
  
  char **g_argv;
  
  /*
   * Output file prefixes
   */
  char *exportfs_pref;
  char *fstab_pref;
  char *dumpset_pref;
  char *mount_pref;
  char *bootparams_pref;
  
  /*
   * Argument cracking...
   */
  static void get_args(c, v)
  int c;
  char *v[];
  {
  	extern char *optarg;
  	extern int optind;
  	int ch, n, usage = 0;
  	char *iptr = idvbuf;
  	int iptr_size = sizeof(idvbuf);
  
  	while ((ch = getopt(c, v, "a:b:d:e:f:h:m:D:U:I:qv")) != -1)
  	switch (ch) {
  	case 'a':
  		autodir = optarg;
  		break;
  	case 'b':
  		if (bootparams_pref)
  			fatal("-b option specified twice");
  		bootparams_pref = optarg;
  		break;
  	case 'd':
  		if (dumpset_pref)
  			fatal("-d option specified twice");
  		dumpset_pref = optarg;
  		break;
  	case 'h':
  		strlcpy(hostname, optarg, sizeof(hostname));
  		break;
  	case 'e':
  		if (exportfs_pref)
  			fatal("-e option specified twice");
  		exportfs_pref = optarg;
  		break;
  	case 'f':
  		if (fstab_pref)
  			fatal("-f option specified twice");
  		fstab_pref = optarg;
  		break;
  	case 'm':
  		if (mount_pref)
  			fatal("-m option specified twice");
  		mount_pref = optarg;
  		break;
  	case 'q':
  		verbose = -1;
  		break;
  	case 'v':
  		verbose = 1;
  		break;
  	case 'I': case 'D': case 'U':
  		n = snprintf(iptr, iptr_size, "-%c%s ", ch, optarg);
  		if (n >= iptr_size || n < 0)
  			usage++;
  		else {
  			iptr_size -= n;
  			iptr += n;
  		}
  		break;
  	default:
  		usage++;
  		break;
  	}
  
  	if (c != optind) {
  		g_argv = v + optind - 1;
  		if (yywrap())
  			fatal("Cannot read any input files");
  	} else {
  		usage++;
  	}
  
  	if (usage) {
  		fprintf(stderr,
  "\
  Usage: %s [-v] [-a autodir] [-h hostname] [-b bootparams] [-d dumpsets]\n\
  \t[-e exports] [-f fstabs] [-m automounts]\n\
  \t[-I dir] [-D|-U string[=string]] config ...\n", __progname);
  		exit(1);
  	}
  
  
  	if (g_argv[0])
  		log("g_argv[0] = %s", g_argv[0]);
  	else
  		log("g_argv[0] = (nil)");
  }
  
  /*
   * Determine username of caller
   */
  static char *find_username()
  {
  	extern char *getlogin();
  	extern char *getenv();
  	char *u = getlogin();
  	if (!u) {
  		struct passwd *pw = getpwuid(getuid());
  		if (pw)
  			u = pw->pw_name;
  	}
  	if (!u)
  		u = getenv("LOGNAME");
  	if (!u)
  		u = getenv("USER");
  	if (!u)
  		u = "root";
  
  	return strdup(u);
  }
  
  /*
   * MAIN
   */
  int
  main(argc, argv)
  	int argc;
  	char *argv[];
  {
  	/*
  	 * Process arguments
  	 */
  	get_args(argc, argv);
  
  	/*
  	 * If no hostname given then use the local name
  	 */
  	if (!*hostname && gethostname(hostname, sizeof(hostname)) < 0)
  		err(1, "gethostname");
  
  	/*
  	 * Get the username
  	 */
  	username = find_username();
  
  	/*
  	 * New hosts and automounts
  	 */
  	list_of_hosts = new_que();
  	list_of_automounts = new_que();
  
  	/*
  	 * New dictionaries
  	 */
  	dict_of_volnames = new_dict();
  	dict_of_hosts = new_dict();
  
  	/*
  	 * Parse input
  	 */
  	show_area_being_processed("read config", 11);
  	if (yyparse())
  		errors = 1;
  	errors += file_io_errors + parse_errors;
  
  	if (errors == 0) {
  		/*
  		 * Do semantic analysis of input
  		 */
  		analyze_hosts(list_of_hosts);
  		analyze_automounts(list_of_automounts);
  	}
  
  	/*
  	 * Give up if errors
  	 */
  	if (errors == 0) {
  		/*
  		 * Output data files
  		 */
  
  		write_atab(list_of_automounts);
  		write_bootparams(list_of_hosts);
  		write_dumpset(list_of_hosts);
  		write_exportfs(list_of_hosts);
  		write_fstab(list_of_hosts);
  	}
  
  	col_cleanup(1);
  
  	return (errors);
  }
  