mkisofs.c

一款功能很强的光盘镜象制作工具

	for (i = 0; i < (int)OPTION_COUNT; i++) {
		if (ld_options[i].doc != NULL) {
			int	comma;
			int	len;
			int	j;

			fprintf(stderr, "  ");

			comma = FALSE;
			len = 2;

			j = i;
			do {
				if (ld_options[j].shortopt != '\0'
					&& ld_options[j].control != NO_HELP) {
					fprintf(stderr, "%s-%c",
						comma ? ", " : "",
						ld_options[j].shortopt);
					len += (comma ? 2 : 0) + 2;
					if (ld_options[j].arg != NULL) {
						if (ld_options[j].opt.has_arg != optional_argument) {
							fprintf(stderr, " ");
							++len;
						}
						fprintf(stderr, "%s",
							ld_options[j].arg);
						len += strlen(ld_options[j].arg);
					}
					comma = TRUE;
				}
				++j;
			}
			while (j < (int)OPTION_COUNT && ld_options[j].doc == NULL);

			j = i;
			do {
				if (ld_options[j].opt.name != NULL
					&& ld_options[j].control != NO_HELP) {
					fprintf(stderr, "%s-%s%s",
						comma ? ", " : "",
						ld_options[j].control == TWO_DASHES ? "-" : "",
						ld_options[j].opt.name);
					len += ((comma ? 2 : 0)
						+ 1
						+ (ld_options[j].control == TWO_DASHES ? 1 : 0)
						+ strlen(ld_options[j].opt.name));
					if (ld_options[j].arg != NULL) {
						fprintf(stderr, " %s",
							ld_options[j].arg);
						len += 1 +
						    strlen(ld_options[j].arg);
					}
					comma = TRUE;
				}
				++j;
			}
			while (j < (int)OPTION_COUNT && ld_options[j].doc == NULL);

			if (len >= 30) {
				fprintf(stderr, "\n");
				len = 0;
			}
			for (; len < 30; len++)
				fputc(' ', stderr);

			fprintf(stderr, "%s\n", ld_options[i].doc);
		}
	}
	exit(excode);
}


/*
 * Fill in date in the iso9660 format
 *
 * The standards  state that the timezone offset is in multiples of 15
 * minutes, and is what you add to GMT to get the localtime.  The U.S.
 * is always at a negative offset, from -5h to -8h (can vary a little
 * with DST,  I guess).  The Linux iso9660 filesystem has had the sign
 * of this wrong for ages (mkisofs had it wrong too for the longest time).
 */
EXPORT int
iso9660_date(result, crtime)
	char	*result;
	time_t	crtime;
{
	struct tm	*local;

	local = localtime(&crtime);
	result[0] = local->tm_year;
	result[1] = local->tm_mon + 1;
	result[2] = local->tm_mday;
	result[3] = local->tm_hour;
	result[4] = local->tm_min;
	result[5] = local->tm_sec;

	/*
	 * Must recalculate proper timezone offset each time, as some files use
	 * daylight savings time and some don't...
	 */
	result[6] = local->tm_yday;	/* save yday 'cause gmtime zaps it */
	local = gmtime(&crtime);
	local->tm_year -= result[0];
	local->tm_yday -= result[6];
	local->tm_hour -= result[3];
	local->tm_min -= result[4];
	if (local->tm_year < 0) {
		local->tm_yday = -1;
	} else {
		if (local->tm_year > 0)
			local->tm_yday = 1;
	}

	result[6] = -(local->tm_min + 60 *
			(local->tm_hour + 24 * local->tm_yday)) / 15;

	return 0;
}

/* hide "./rr_moved" if all its contents are hidden */
LOCAL void
hide_reloc_dir()
{
	struct directory_entry *s_entry;

	for (s_entry = reloc_dir->contents; s_entry; s_entry = s_entry->next) {
		if (strcmp(s_entry->name, ".") == 0 ||
				strcmp(s_entry->name, "..") == 0)
			continue;

		if ((s_entry->de_flags & INHIBIT_ISO9660_ENTRY) == 0)
			return;
	}

	/* all entries are hidden, so hide this directory */
	reloc_dir->dir_flags |= INHIBIT_ISO9660_ENTRY;
	reloc_dir->self->de_flags |= INHIBIT_ISO9660_ENTRY;
}

/*
 * get pathnames from the command line, and then from given file
 */
LOCAL char *
get_pnames(argc, argv, opt, pname, pnsize, fp)
	int	argc;
	char	**argv;
	int	opt;
	char	*pname;
	int	pnsize;
	FILE	*fp;
{
	int	len;

	/* we may of already read the first line from the pathnames file */
	if (save_pname) {
		save_pname = 0;
		return (pname);
	}

	if (opt < argc)
		return (argv[opt]);

	if (fp == NULL)
		return ((char *) 0);

	if (fgets(pname, pnsize, fp)) {
		/* Discard newline */
		len = strlen(pname);
		if (pname[len - 1] == '\n') {
			pname[len - 1] = '\0';
		}
		return (pname);
	}
	return ((char *) 0);
}

extern char	*cdrecord_data;

EXPORT int
main(argc, argv)
	int		argc;
	char		**argv;
{
	struct directory_entry de;

#ifdef HAVE_SBRK
	unsigned long	mem_start;

#endif
	struct stat	statbuf;
	char		*merge_image = NULL;
	struct iso_directory_record *mrootp = NULL;
	struct output_fragment *opnt;
	int		longind;
	char		shortopts[OPTION_COUNT * 3 + 2];
	struct option	longopts[OPTION_COUNT + 1];
	int		c;
	int		n;
	char		*log_file = 0;
	char		*node = NULL;
	char		*pathnames = 0;
	FILE		*pfp = NULL;
	char		pname[PATH_MAX],
			*arg;
	char		nodename[PATH_MAX];
	int		no_path_names = 1;
	int		warn_violate = 0;
	int		have_cmd_line_pathspec = 0;
	int		rationalize_all = 0;

#ifdef APPLE_HYB
	char		*afpfile = "";	/* mapping file for TYPE/CREATOR */
	int		hfs_ct = 0;
	char		*root_info = 0;
#endif	/* APPLE_HYB */


#ifdef __EMX__
	/* This gives wildcard expansion with Non-Posix shells with EMX */
	_wildcard(&argc, &argv);
#endif
	save_args(argc, argv);

	if (argc < 2) {
#ifdef	USE_LIBSCHILY
		errmsgno(EX_BAD, "Missing pathspec.\n");
#endif
		susage(1);
	}
	/* Get the defaults from the .mkisofsrc file */
	read_rcfile(argv[0]);

	outfile = NULL;

	/*
	 * Copy long option initialization from GNU-ld.
	 */
	/*
	 * Starting the short option string with '-' is for programs that
	 * expect options and other ARGV-elements in any order and that care
	 * about the ordering of the two.  We describe each non-option
	 * ARGV-element as if it were the argument of an option with
	 * character code 1.
	 */
	{
		int		i,
				is,
				il;

		shortopts[0] = '-';
		is = 1;
		il = 0;
		for (i = 0; i < (int)OPTION_COUNT; i++) {
			if (ld_options[i].shortopt != '\0') {
				shortopts[is] = ld_options[i].shortopt;
				++is;
				if (ld_options[i].opt.has_arg ==
					required_argument
					|| ld_options[i].opt.has_arg ==
							optional_argument) {
					shortopts[is] = ':';
					++is;
					if (ld_options[i].opt.has_arg ==
							optional_argument) {
						shortopts[is] = ':';
						++is;
					}
				}
			}
			if (ld_options[i].opt.name != NULL) {
				longopts[il] = ld_options[i].opt;
				++il;
			}
		}
		shortopts[is] = '\0';
		longopts[il].name = NULL;
	}

	while ((c = getopt_long_only(argc, argv, shortopts,
						longopts, &longind)) != EOF)
		switch (c) {
		case 1:
			/* A filename that we take as input. */
			optind--;
			have_cmd_line_pathspec = 1;
			goto parse_input_files;

		case OPTION_USE_GRAFT:
			use_graft_ptrs = 1;
			break;
		case 'C':
			/*
			 * This is a temporary hack until cdrecord gets the
			 * proper hooks in it.
			 */
			cdrecord_data = optarg;
			break;
		case OPTION_GUI:
			gui++;
			break;
		case 'i':
#ifdef	USE_LIBSCHILY
			comerrno(EX_BAD, "-i option no longer supported.\n");
#else
			fprintf(stderr, "-i option no longer supported.\n");
			exit(1);
#endif
			break;
		case OPTION_ISO_LEVEL:
			iso9660_level = atoi(optarg);

			switch (iso9660_level) {

			case 1:
				/*
				 * Only on file section
				 * 8.3 d or d1 characters for files
				 * 8   d or d1 characters for directories
				 */
				break;
			case 2:
				/*
				 * Only on file section
				 */
				break;
			case 3:
				/*
				 * No restrictions
				 */
				break;

			default:
				comerrno(EX_BAD, "Illegal iso9660 Level %d, use 1..3.\n",
							ucs_level);
			}
			break;
		case 'J':
			use_Joliet++;
			break;
		case OPTION_JLONG:
			use_Joliet++;
			jlen = JLONGMAX;
			break;
		case OPTION_JCHARSET:
			use_Joliet++;
			/* FALLTHROUGH */
		case OPTION_INPUT_CHARSET:
			icharset = optarg;
			break;
		case OPTION_OUTPUT_CHARSET:
			ocharset = optarg;
			break;
		case OPTION_NOBAK:
			all_files = 0;
			break;
		case 'b':
			use_eltorito++;
			boot_image = optarg;	/* pathname of the boot image
						   on disk */
			if (boot_image == NULL) {
#ifdef	USE_LIBSCHILY
				comerrno(EX_BAD,
				"Required Eltorito boot image pathname missing\n");
#else
				fprintf(stderr,
				"Required Eltorito boot image pathname missing\n");
				exit(1);
#endif
			}
			get_boot_entry();
			current_boot_entry->boot_image = boot_image;
			break;
		case OPTION_ALT_BOOT:
			/*
			 * Start new boot entry parameter list.
			 */
			new_boot_entry();
			break;
		case 'B':
			use_sparcboot++;
			/* list of pathnames of boot images */
			scan_sparc_boot(optarg);
			break;
		case 'G':
			use_genboot++;
			/* pathname of the boot image on disk */
			genboot_image = optarg;
			if (genboot_image == NULL) {
#ifdef	USE_LIBSCHILY
				comerrno(EX_BAD,
				"Required generic boot image pathname missing\n");
#else
				fprintf(stderr,
				"Required generic boot image pathname missing\n");
				exit(1);
#endif
			}
			break;
		case OPTION_SPARCLABEL:
			/* Sun disk label string */
			sparc_boot_label(optarg);
			break;
		case 'c':
			use_eltorito++;
			/* pathname of the boot image on cd */
			boot_catalog = optarg;
			if (boot_catalog == NULL) {
#ifdef	USE_LIBSCHILY
				comerrno(EX_BAD,
				"Required boot catalog pathname missing\n");
#else
				fprintf(stderr,
				"Required boot catalog pathname missing\n");
				exit(1);
#endif
			}
			break;
		case OPTION_ABSTRACT:
			abstract = optarg;
			if (strlen(abstract) > 37) {
#ifdef	USE_LIBSCHILY
				comerrno(EX_BAD,
				"Abstract filename string too long\n");
#else
				fprintf(stderr,
				"Abstract filename string too long\n");
				exit(1);
#endif
			};
			break;
		case 'A':
			appid = optarg;
			if (strlen(appid) > 128) {
#ifdef	USE_LIBSCHILY
				comerrno(EX_BAD,
				"Application-id string too long\n");
#else
				fprintf(stderr,
				"Application-id string too long\n");
				exit(1);
#endif
			};
			break;
		case OPTION_BIBLIO:
			biblio = optarg;
			if (strlen(biblio) > 37) {
#ifdef	USE_LIBSCHILY
				comerrno(EX_BAD,
				"Bibliographic filename string too long\n");
#else
				fprintf(stderr,
				"Bibliographic filename string too long\n");
				exit(1);
#endif
			};
			break;
		case OPTION_CACHE_INODES:
			cache_inodes = 1;
			break;
		case OPTION_NOCACHE_INODES:
			cache_inodes = 0;
			break;
		case OPTION_CHECK_OLDNAMES:
			check_oldnames++;
			break;
		case OPTION_CHECK_SESSION:
			check_session++;
			check_oldnames++;
			merge_image = optarg;
			outfile = "/dev/null";
			/*
			 * cdrecord_data is handled specially in multi.c