C++ parse_options函数代码示例

int
main(int argc, char *argv[])
{
    char *unixctl_path = NULL;
    struct unixctl_server *unixctl;
    struct signal *sighup;
    char *remote;
    bool exiting;
    int retval;

    proctitle_init(argc, argv);
    set_program_name(argv[0]);
    stress_init_command();
    remote = parse_options(argc, argv, &unixctl_path);
    signal(SIGPIPE, SIG_IGN);
    sighup = signal_register(SIGHUP);
    process_init();
    ovsrec_init();

    daemonize_start();

    if (want_mlockall) {
#ifdef HAVE_MLOCKALL
        if (mlockall(MCL_CURRENT | MCL_FUTURE)) {
            VLOG_ERR("mlockall failed: %s", strerror(errno));
        }
#else
        VLOG_ERR("mlockall not supported on this system");
#endif
    }

    retval = unixctl_server_create(unixctl_path, &unixctl);
    if (retval) {
        exit(EXIT_FAILURE);
    }
    unixctl_command_register("exit", "", 0, 0, ovs_vswitchd_exit, &exiting);

    bridge_init(remote);
    free(remote);

    exiting = false;
    while (!exiting) {
        if (signal_poll(sighup)) {
            vlog_reopen_log_file();
        }
        bridge_run_fast();
        bridge_run();
        bridge_run_fast();
        unixctl_server_run(unixctl);
        netdev_run();

        signal_wait(sighup);
        bridge_wait();
        unixctl_server_wait(unixctl);
        netdev_wait();
        if (exiting) {
            poll_immediate_wake();
        }
        poll_block();
    }
    bridge_exit();
    unixctl_server_destroy(unixctl);
    signal_unregister(sighup);

    return 0;
}

static int cmd_parseopt(int argc, const char **argv, const char *prefix)
{
    static int keep_dashdash = 0, stop_at_non_option = 0;
    static char const * const parseopt_usage[] = {
        N_("git rev-parse --parseopt [<options>] -- [<args>...]"),
        NULL
    };
    static struct option parseopt_opts[] = {
        OPT_BOOL(0, "keep-dashdash", &keep_dashdash,
        N_("keep the `--` passed as an arg")),
        OPT_BOOL(0, "stop-at-non-option", &stop_at_non_option,
        N_("stop parsing after the "
        "first non-option argument")),
        OPT_BOOL(0, "stuck-long", &stuck_long,
        N_("output in stuck long form")),
        OPT_END(),
    };

    struct strbuf sb = STRBUF_INIT, parsed = STRBUF_INIT;
    const char **usage = NULL;
    struct option *opts = NULL;
    int onb = 0, osz = 0, unb = 0, usz = 0;

    strbuf_addstr(&parsed, "set --");
    argc = parse_options(argc, argv, prefix, parseopt_opts, parseopt_usage,
                         PARSE_OPT_KEEP_DASHDASH);
    if (argc < 1 || strcmp(argv[0], "--"))
        usage_with_options(parseopt_usage, parseopt_opts);

    /* get the usage up to the first line with a -- on it */
    for (;;) {
        if (strbuf_getline(&sb, stdin, '\n') == EOF)
            die("premature end of input");
        ALLOC_GROW(usage, unb + 1, usz);
        if (!strcmp("--", sb.buf)) {
            if (unb < 1)
                die("no usage string given before the `--' separator");
            usage[unb] = NULL;
            break;
        }
        usage[unb++] = strbuf_detach(&sb, NULL);
    }

    /* parse: (<short>|<short>,<long>|<long>)[*=?!]*<arghint>? SP+ <help> */
    while (strbuf_getline(&sb, stdin, '\n') != EOF) {
        const char *s;
        const char *end;
        struct option *o;

        if (!sb.len)
            continue;

        ALLOC_GROW(opts, onb + 1, osz);
        memset(opts + onb, 0, sizeof(opts[onb]));

        o = &opts[onb++];
        s = strchr(sb.buf, ' ');
        if (!s || *sb.buf == ' ') {
            o->type = OPTION_GROUP;
            o->help = xstrdup(skipspaces(sb.buf));
            continue;
        }

        o->type = OPTION_CALLBACK;
        o->help = xstrdup(skipspaces(s));
        o->value = &parsed;
        o->flags = PARSE_OPT_NOARG;
        o->callback = &parseopt_dump;

        /* Possible argument name hint */
        end = s;
        while (s > sb.buf && strchr("*=?!", s[-1]) == NULL)
            --s;
        if (s != sb.buf && s != end)
            o->argh = xmemdupz(s, end - s);
        if (s == sb.buf)
            s = end;

        while (s > sb.buf && strchr("*=?!", s[-1])) {
            switch (*--s) {
            case '=':
                o->flags &= ~PARSE_OPT_NOARG;
                break;
            case '?':
                o->flags &= ~PARSE_OPT_NOARG;
                o->flags |= PARSE_OPT_OPTARG;
                break;
            case '!':
                o->flags |= PARSE_OPT_NONEG;
                break;
            case '*':
                o->flags |= PARSE_OPT_HIDDEN;
                break;
            }
        }

        if (s - sb.buf == 1) /* short option only */
            o->short_name = *sb.buf;
        else if (sb.buf[1] != ',') /* long option only */
            o->long_name = xmemdupz(sb.buf, s - sb.buf);
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    /*
     * Initialize default argv, argc, and argv_size.
     */
    argv_size = 10;
    argc = 0;
    f_argv = (char **)ckd_calloc(argv_size, sizeof(char *));
    /* Silently make room for \0 */
    str = (char* )ckd_calloc(arg_max_length + 1, sizeof(char));
    quoting = 0;

    do {
        /* Handle arguments that are commented out */
        if (len == 0 && argc % 2 == 0) {
            while (ch == '#') {
                /* Skip everything until newline */
                for (ch = fgetc(file); ch != EOF && ch != '\n'; ch = fgetc(file)) ;
                /* Skip to the next interesting character */
                for (ch = fgetc(file); ch != EOF && strchr(separator, ch); ch = fgetc(file)) ;
            }

            /* Check if we are at the last line (without anything interesting in it) */
            if (ch == EOF)
                break;
        }

        /* Handle quoted arguments */
        if (ch == '"' || ch == '\'') {
            if (quoting == ch) /* End a quoted section with the same type */
                quoting = 0;
            else if (quoting) {
                E_ERROR("Nesting quotations is not supported!\n");
                rv = 1;
                break;
            }
            else
                quoting = ch; /* Start a quoted section */
        }
        else if (ch == EOF || (!quoting && strchr(separator, ch))) {
            /* Reallocate argv so it is big enough to contain all the arguments */
            if (argc >= argv_size) {
                char **tmp_argv;
                if (!(tmp_argv =
                       (char **)ckd_realloc(f_argv, argv_size * 2 * sizeof(char *)))) {
                    rv = 1;
                    break;
                }
                f_argv = tmp_argv;
                argv_size *= 2;
            }
            /* Add the string to the list of arguments */
            f_argv[argc] = ckd_salloc(str);
            len = 0;
            str[0] = '\0';
            argc++;

            if (quoting)
                E_WARN("Unclosed quotation, having EOF close it...\n");

            /* Skip to the next interesting character */
            for (; ch != EOF && strchr(separator, ch); ch = fgetc(file)) ;

            if (ch == EOF)
                break;

            /* We already have the next character */
            continue;
        }
        else {
            if (len >= arg_max_length) {
                /* Make room for more chars (including the \0 !) */
                char *tmp_str = str;
                if ((tmp_str = (char *)ckd_realloc(str, (1 + arg_max_length * 2) * sizeof(char))) == NULL) {
                    rv = 1;
                    break;
                }
                str = tmp_str;
                arg_max_length *= 2;
            }
            /* Add the char to the argument string */
            str[len++] = ch;
            /* Always null terminate */
            str[len] = '\0';
        }

        ch = fgetc(file);
    } while (1);

    fclose(file);

    ckd_free(str);

    if (rv) {
        for (ch = 0; ch < argc; ++ch)
            ckd_free(f_argv[ch]);
        ckd_free(f_argv);
        return NULL;
    }

    return parse_options(inout_cmdln, defn, argc, f_argv, strict);
}

/**
 * main functiom - for colne or restore data
 */
int main(int argc, char **argv) {
#ifdef MEMTRACE
    setenv("MALLOC_TRACE", "partclone_mtrace.log", 1);
    mtrace();
#endif
    char*		source;			/// source data
    char*		target;			/// target data
    char*		buffer;			/// buffer data for malloc used
    char*		buffer2;			/// buffer data for malloc used
    int			dfr, dfw;		/// file descriptor for source and target
    int			r_size, w_size;		/// read and write size
    //unsigned long long	block_id, copied = 0;	/// block_id is every block in partition
    /// copied is copied block count
    off_t		offset = 0, sf = 0;	/// seek postition, lseek result
    int			start, stop;		/// start, range, stop number for progress bar
    unsigned long long	total_write = 0;	/// the copied size
    unsigned long long	needed_size = 0;	/// the copied size
    unsigned long long	needed_mem  = 0;	/// the copied size
    char		bitmagic[8] = "BiTmAgIc";// only for check postition
    char		bitmagic_r[8]="00000000";/// read magic string from image
    int			cmp;			/// compare magic string
    unsigned long	*bitmap;		/// the point for bitmap data
    int			debug = 0;		/// debug or not
    unsigned long	crc = 0xffffffffL;	/// CRC32 check code for writint to image
    unsigned long	crc_ck = 0xffffffffL;	/// CRC32 check code for checking
    unsigned long	crc_ck2 = 0xffffffffL;	/// CRC32 check code for checking
    int			c_size;			/// CRC32 code size
    int			n_crc_size = CRC_SIZE;
    char*		crc_buffer;		/// buffer data for malloc crc code
    //int			done = 0;
    int			s_count = 0;
    int			rescue_num = 0;
    unsigned long long			rescue_pos = 0;
    unsigned long long			main_pos = 0;
    int			tui = 0;		/// text user interface
    int			pui = 0;		/// progress mode(default text)
    int                 next=1,next_int=1,next_max_count=7,next_count=7,i;
    unsigned long long  next_block_id;
    char*               cache_buffer;
    int                 nx_current=0;
    char                bbuffer[4096];
    int flag;
    int pres;
    pthread_t prog_thread;
    void *p_result;

    char *bad_sectors_warning_msg =
        "*************************************************************************\n"
        "* WARNING: The disk has bad sector. This means physical damage on the   *\n"
        "* disk surface caused by deterioration, manufacturing faults or other   *\n"
        "* reason. The reliability of the disk may stay stable or degrade fast.  *\n"
        "* Use the --rescue option to efficiently save as much data as possible! *\n"
        "*************************************************************************\n";

    image_head		image_hdr;		/// image_head structure defined in partclone.h
    memset(&image_hdr, 0, sizeof(image_hdr));

    /**
     * get option and assign to opt structure
     * check parameter and read from argv
     */
    parse_options(argc, argv, &opt);

    /**
     * if "-d / --debug" given
     * open debug file in "/var/log/partclone.log" for log message
     */
    memset(&fs_opt, 0, sizeof(fs_cmd_opt));
    debug = opt.debug;
    fs_opt.debug = debug;
    fs_opt.ignore_fschk = opt.ignore_fschk;

    next_max_count = opt.max_block_cache-1;
    next_count = opt.max_block_cache-1;

    //if(opt.debug)
    open_log(opt.logfile);

    /**
     * using Text User Interface
     */
    if (opt.ncurses) {
        pui = NCURSES;
        log_mesg(1, 0, 0, debug, "Using Ncurses User Interface mode.\n");
    } else
        pui = TEXT;

    tui = open_pui(pui, opt.fresh);
    if ((opt.ncurses) && (tui == 0)) {
        opt.ncurses = 0;
        log_mesg(1, 0, 0, debug, "Open Ncurses User Interface Error.\n");
    }

    /// print partclone info
    print_partclone_info(opt);

    if (geteuid() != 0)
//.........这里部分代码省略.........

int cmd_add(int argc, const char **argv, const char *prefix)
{
	int exit_status = 0;
	struct pathspec pathspec;
	struct dir_struct dir;
	int flags;
	int add_new_files;
	int require_pathspec;
	char *seen = NULL;

	git_config(add_config, NULL);

	argc = parse_options(argc, argv, prefix, builtin_add_options,
			  builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
	if (patch_interactive)
		add_interactive = 1;
	if (add_interactive)
		exit(interactive_add(argc - 1, argv + 1, prefix, patch_interactive));

	if (edit_interactive)
		return(edit_patch(argc, argv, prefix));
	argc--;
	argv++;

	if (0 <= addremove_explicit)
		addremove = addremove_explicit;
	else if (take_worktree_changes && ADDREMOVE_DEFAULT)
		addremove = 0; /* "-u" was given but not "-A" */

	if (addremove && take_worktree_changes)
		die(_("-A and -u are mutually incompatible"));

	if (!take_worktree_changes && addremove_explicit < 0 && argc)
		/* Turn "git add pathspec..." to "git add -A pathspec..." */
		addremove = 1;

	if (!show_only && ignore_missing)
		die(_("Option --ignore-missing can only be used together with --dry-run"));

	add_new_files = !take_worktree_changes && !refresh_only;
	require_pathspec = !(take_worktree_changes || (0 < addremove_explicit));

	hold_locked_index(&lock_file, 1);

	flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
		 (show_only ? ADD_CACHE_PRETEND : 0) |
		 (intent_to_add ? ADD_CACHE_INTENT : 0) |
		 (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
		 (!(addremove || take_worktree_changes)
		  ? ADD_CACHE_IGNORE_REMOVAL : 0));

	if (require_pathspec && argc == 0) {
		fprintf(stderr, _("Nothing specified, nothing added.\n"));
		fprintf(stderr, _("Maybe you wanted to say 'git add .'?\n"));
		return 0;
	}

	if (read_cache() < 0)
		die(_("index file corrupt"));

	/*
	 * Check the "pathspec '%s' did not match any files" block
	 * below before enabling new magic.
	 */
	parse_pathspec(&pathspec, 0,
		       PATHSPEC_PREFER_FULL |
		       PATHSPEC_SYMLINK_LEADING_PATH |
		       PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE,
		       prefix, argv);

	if (add_new_files) {
		int baselen;

		/* Set up the default git porcelain excludes */
		memset(&dir, 0, sizeof(dir));
		if (!ignored_too) {
			dir.flags |= DIR_COLLECT_IGNORED;
			setup_standard_excludes(&dir);
		}

		/* This picks up the paths that are not tracked */
		baselen = fill_directory(&dir, &pathspec);
		if (pathspec.nr)
			seen = prune_directory(&dir, &pathspec, baselen);
	}

	if (refresh_only) {
		refresh(verbose, &pathspec);
		goto finish;
	}

	if (pathspec.nr) {
		int i;

		if (!seen)
			seen = find_pathspecs_matching_against_index(&pathspec);

		/*
		 * file_exists() assumes exact match
		 */
//.........这里部分代码省略.........

static int update_clone(int argc, const char **argv, const char *prefix)
{
	const char *update = NULL;
	int max_jobs = -1;
	struct string_list_item *item;
	struct pathspec pathspec;
	struct submodule_update_clone suc = SUBMODULE_UPDATE_CLONE_INIT;

	struct option module_update_clone_options[] = {
		OPT_STRING(0, "prefix", &prefix,
			   N_("path"),
			   N_("path into the working tree")),
		OPT_STRING(0, "recursive-prefix", &suc.recursive_prefix,
			   N_("path"),
			   N_("path into the working tree, across nested "
			      "submodule boundaries")),
		OPT_STRING(0, "update", &update,
			   N_("string"),
			   N_("rebase, merge, checkout or none")),
		OPT_STRING_LIST(0, "reference", &suc.references, N_("repo"),
			   N_("reference repository")),
		OPT_STRING(0, "depth", &suc.depth, "<depth>",
			   N_("Create a shallow clone truncated to the "
			      "specified number of revisions")),
		OPT_INTEGER('j', "jobs", &max_jobs,
			    N_("parallel jobs")),
		OPT_BOOL(0, "recommend-shallow", &suc.recommend_shallow,
			    N_("whether the initial clone should follow the shallow recommendation")),
		OPT__QUIET(&suc.quiet, N_("don't print cloning progress")),
		OPT_BOOL(0, "progress", &suc.progress,
			    N_("force cloning progress")),
		OPT_END()
	};

	const char *const git_submodule_helper_usage[] = {
		N_("git submodule--helper update_clone [--prefix=<path>] [<path>...]"),
		NULL
	};
	suc.prefix = prefix;

	argc = parse_options(argc, argv, prefix, module_update_clone_options,
			     git_submodule_helper_usage, 0);

	if (update)
		if (parse_submodule_update_strategy(update, &suc.update) < 0)
			die(_("bad value for update parameter"));

	if (module_list_compute(argc, argv, prefix, &pathspec, &suc.list) < 0)
		return 1;

	if (pathspec.nr)
		suc.warn_if_uninitialized = 1;

	/* Overlay the parsed .gitmodules file with .git/config */
	gitmodules_config();
	git_config(submodule_config, NULL);

	if (max_jobs < 0)
		max_jobs = parallel_submodules();

	run_processes_parallel(max_jobs,
			       update_clone_get_next_task,
			       update_clone_start_failure,
			       update_clone_task_finished,
			       &suc);

	/*
	 * We saved the output and put it out all at once now.
	 * That means:
	 * - the listener does not have to interleave their (checkout)
	 *   work with our fetching.  The writes involved in a
	 *   checkout involve more straightforward sequential I/O.
	 * - the listener can avoid doing any work if fetching failed.
	 */
	if (suc.quickstop)
		return 1;

	for_each_string_list_item(item, &suc.projectlines)
		utf8_fprintf(stdout, "%s", item->string);

	return 0;
}

int cmd_config(int argc, const char **argv, const char *prefix)
{
	int nongit = !startup_info->have_repository;
	char *value;

	config_exclusive_filename = getenv(CONFIG_ENVIRONMENT);

	argc = parse_options(argc, argv, prefix, builtin_config_options,
			     builtin_config_usage,
			     PARSE_OPT_STOP_AT_NON_OPTION);

	if (use_global_config + use_system_config + use_local_config + !!given_config_file > 1) {
		error("only one config file at a time.");
		usage_with_options(builtin_config_usage, builtin_config_options);
	}

	if (use_global_config) {
		char *home = getenv("HOME");
		if (home) {
			char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
			config_exclusive_filename = user_config;
		} else {
			die("$HOME not set");
		}
	}
	else if (use_system_config)
		config_exclusive_filename = git_etc_gitconfig();
	else if (use_local_config)
		config_exclusive_filename = git_pathdup("config");
	else if (given_config_file) {
		if (!is_absolute_path(given_config_file) && prefix)
			config_exclusive_filename = prefix_filename(prefix,
								    strlen(prefix),
								    given_config_file);
		else
			config_exclusive_filename = given_config_file;
	}

	if (end_null) {
		term = '\0';
		delim = '\n';
		key_delim = '\n';
	}

	if (HAS_MULTI_BITS(types)) {
		error("only one type at a time.");
		usage_with_options(builtin_config_usage, builtin_config_options);
	}

	if (get_color_slot)
	    actions |= ACTION_GET_COLOR;
	if (get_colorbool_slot)
	    actions |= ACTION_GET_COLORBOOL;

	if ((get_color_slot || get_colorbool_slot) && types) {
		error("--get-color and variable type are incoherent");
		usage_with_options(builtin_config_usage, builtin_config_options);
	}

	if (HAS_MULTI_BITS(actions)) {
		error("only one action at a time.");
		usage_with_options(builtin_config_usage, builtin_config_options);
	}
	if (actions == 0)
		switch (argc) {
		case 1: actions = ACTION_GET; break;
		case 2: actions = ACTION_SET; break;
		case 3: actions = ACTION_SET_ALL; break;
		default:
			usage_with_options(builtin_config_usage, builtin_config_options);
		}

	if (actions == ACTION_LIST) {
		check_argc(argc, 0, 0);
		if (git_config(show_all_config, NULL) < 0) {
			if (config_exclusive_filename)
				die_errno("unable to read config file '%s'",
					  config_exclusive_filename);
			else
				die("error processing config file(s)");
		}
	}
	else if (actions == ACTION_EDIT) {
		check_argc(argc, 0, 0);
		if (!config_exclusive_filename && nongit)
			die("not in a git directory");
		git_config(git_default_config, NULL);
		launch_editor(config_exclusive_filename ?
			      config_exclusive_filename : git_path("config"),
			      NULL, NULL);
	}
	else if (actions == ACTION_SET) {
		check_argc(argc, 2, 2);
		value = normalize_value(argv[0], argv[1]);
		return git_config_set(argv[0], value);
	}
	else if (actions == ACTION_SET_ALL) {
		check_argc(argc, 2, 3);
		value = normalize_value(argv[0], argv[1]);
		return git_config_set_multivar(argv[0], value, argv[2], 0);
//.........这里部分代码省略.........

	session = perf_session__new(input_name, O_RDONLY, 0, false, NULL);
	if (session == NULL)
		return -ENOMEM;

	list_for_each_entry(pos, &session->evlist->entries, node)
		printf("%s\n", event_name(pos));

	perf_session__delete(session);
	return 0;
}

static const char * const evlist_usage[] = {
	"perf evlist [<options>]",
	NULL
};

static const struct option options[] = {
	OPT_STRING('i', "input", &input_name, "file",
		    "input file name"),
	OPT_END()
};

int cmd_evlist(int argc, const char **argv, const char *prefix __used)
{
	argc = parse_options(argc, argv, options, evlist_usage, 0);
	if (argc)
		usage_with_options(evlist_usage, options);

	return __cmd_evlist();
}

int main (int argc, char * argv[])
{
    char * file_name;
    int dev, i;

#if 1
    if (1) {
	/* ???? */
	schedule ();
	iput (0);
    }
#endif

    fprintf (stderr, "\n<-----------dumpreiserfs, version 0.99, 2000----------->\n"); 
    file_name = parse_options (argc, argv);


    dev = open (file_name, O_RDONLY);
    if (dev == -1)
	die ("dumpreiserfs: Can not open device %s: %s\n", file_name, strerror (errno));
    g_sb.s_dev = dev;

    if (uread_super_block (&g_sb))
	die ("dumpreiserfs: no reiserfs found on %s", file_name);
    if (uread_bitmaps (&g_sb))
	die ("dumpreiserfs: read_bitmap failed");

    if (opt_pack || opt_pack_all) {
	pack_partition (&g_sb);
    } else {
	/* dump file system to stdout */
	if (opt_block_to_print != -1) {
	    print_one_block (opt_block_to_print);
	    goto end;
	}

	print_block (SB_BUFFER_WITH_SB (&g_sb));

	if (opt_print_journal)
	    print_journal (&g_sb);
    
	if (opt_print_objectid_map == 1)
	    print_objectid_map (&g_sb);
    
	if (opt_print_block_map) {
	    print_bmap (&g_sb, opt_print_block_map == 1 ? 1 : 0);
	}

	if (opt_print_regular_file_content || opt_print_directory_contents ||
	    opt_print_leaf_items) {
	    print_disk_tree (SB_ROOT_BLOCK (&g_sb));

	    /* print the statistic */
	    printf ("File system uses %d internal + %d leaves + %d unformatted nodes = %d blocks\n", 
		    g_stat_info.nr_internals, g_stat_info.nr_leaves, g_stat_info.nr_unformatted, 
		    g_stat_info.nr_internals + g_stat_info.nr_leaves + g_stat_info.nr_unformatted);
	}
    }


 end:
    /* brelse bitmaps */
    if (SB_AP_BITMAP (&g_sb)) {
	for (i = 0; i < SB_BMAP_NR (&g_sb); i ++) {
	    brelse (SB_AP_BITMAP (&g_sb)[i]);
	}
	freemem (SB_AP_BITMAP (&g_sb));
    }

    /* brelse buffer containing super block */
    brelse (SB_BUFFER_WITH_SB (&g_sb));

    check_and_free_buffer_mem ();

    return 0;
}

int main(int argc, char *argv[])
{
    static unsigned char sectbuf[SECTOR_SIZE];
    int dev_fd, fd;
    struct stat st;
    int err = 0;
    char mntname[128];
    char *ldlinux_name;
    char *ldlinux_path;
    char *subdir;
    //sector_t *sectors = NULL;
    libfat_sector_t *sectors = NULL;
    int ldlinux_sectors = (boot_image_len + SECTOR_SIZE - 1) >> SECTOR_SHIFT;
    const char *errmsg;
    int mnt_cookie;
    int patch_sectors;
    int i;
    
    printf("syslinux for Mac OS X; created by Geza Kovacs for UNetbootin unetbootin.sf.net\n");

    mypid = getpid();
    umask(077);
    parse_options(argc, argv, MODE_SYSLINUX);

    /* Note: subdir is guaranteed to start and end in / */
    if (opt.directory && opt.directory[0]) {
	int len = strlen(opt.directory);
	int rv = asprintf(&subdir, "%s%s%s",
			  opt.directory[0] == '/' ? "" : "/",
			  opt.directory,
			  opt.directory[len-1] == '/' ? "" : "/");
	if (rv < 0 || !subdir) {
	    perror(program);
	    exit(1);
	}
    } else {
	subdir = "/";
    }

    if (!opt.device || opt.install_mbr || opt.activate_partition)
	usage(EX_USAGE, MODE_SYSLINUX);

    /*
     * First make sure we can open the device at all, and that we have
     * read/write permission.
     */

    if (geteuid()) {
	die("This program needs root privilege");
    }
    char umountCommand[4096];
    memset(umountCommand, 0, 4096);
    strcat(umountCommand, "hdiutil unmount ");
    strcat(umountCommand, opt.device);
    system(umountCommand);
    
    dev_fd = open(opt.device, O_RDWR);
    if (dev_fd < 0 || fstat(dev_fd, &st) < 0) {
	perror("couldn't open device");
	exit(1);
    }

    if (!S_ISBLK(st.st_mode) && !S_ISREG(st.st_mode) && !S_ISCHR(st.st_mode)) {
	die("not a device or regular file");
    }

    if (opt.offset && S_ISBLK(st.st_mode)) {
	die("can't combine an offset with a block device");
    }

    fs_type = VFAT;
    xpread(dev_fd, sectbuf, SECTOR_SIZE, opt.offset);
    fsync(dev_fd);
    close(dev_fd);

    /*
     * Check to see that what we got was indeed an MS-DOS boot sector/superblock
     */
    if ((errmsg = syslinux_check_bootsect(sectbuf))) {
	fprintf(stderr, "%s: %s\n", opt.device, errmsg);
	exit(1);
    }

    /*
     * Now mount the device.
     */
    if (geteuid()) {
	die("This program needs root privilege");
    }
#if 0
    else {
	int i = 0;
	struct stat dst;
	int rv;

	/* We're root or at least setuid.
	   Make a temp dir and pass all the gunky options to mount. */

	if (chdir(_PATH_TMP)) {
	    fprintf(stderr, "%s: Cannot access the %s directory.\n",
//.........这里部分代码省略.........

int main(int argc, const char **argv)
{
  goto_fence_inserter_parse_optionst parse_options(argc, argv);
  return parse_options.main();
}

int cmd_merge(int argc, const char **argv, const char *prefix)
{
	unsigned char result_tree[20];
	unsigned char stash[20];
	unsigned char head_sha1[20];
	struct commit *head_commit;
	struct strbuf buf = STRBUF_INIT;
	const char *head_arg;
	int flag, i, ret = 0;
	int best_cnt = -1, merge_was_ok = 0, automerge_was_ok = 0;
	struct commit_list *common = NULL;
	const char *best_strategy = NULL, *wt_strategy = NULL;
	struct commit_list **remotes = &remoteheads;
	void *branch_to_free;

	if (argc == 2 && !strcmp(argv[1], "-h"))
		usage_with_options(builtin_merge_usage, builtin_merge_options);

	/*
	 * Check if we are _not_ on a detached HEAD, i.e. if there is a
	 * current branch.
	 */
	branch = branch_to_free = resolve_refdup("HEAD", head_sha1, 0, &flag);
	if (branch && !prefixcmp(branch, "refs/heads/"))
		branch += 11;
	if (!branch || is_null_sha1(head_sha1))
		head_commit = NULL;
	else
		head_commit = lookup_commit_or_die(head_sha1, "HEAD");

	git_config(git_merge_config, NULL);

	if (branch_mergeoptions)
		parse_branch_merge_options(branch_mergeoptions);
	argc = parse_options(argc, argv, prefix, builtin_merge_options,
			builtin_merge_usage, 0);
	if (shortlog_len < 0)
		shortlog_len = (merge_log_config > 0) ? merge_log_config : 0;

	if (verbosity < 0 && show_progress == -1)
		show_progress = 0;

	if (abort_current_merge) {
		int nargc = 2;
		const char *nargv[] = {"reset", "--merge", NULL};

		if (!file_exists(git_path("MERGE_HEAD")))
			die(_("There is no merge to abort (MERGE_HEAD missing)."));

		/* Invoke 'git reset --merge' */
		ret = cmd_reset(nargc, nargv, prefix);
		goto done;
	}

	if (read_cache_unmerged())
		die_resolve_conflict("merge");

	if (file_exists(git_path("MERGE_HEAD"))) {
		/*
		 * There is no unmerged entry, don't advise 'git
		 * add/rm <file>', just 'git commit'.
		 */
		if (advice_resolve_conflict)
			die(_("You have not concluded your merge (MERGE_HEAD exists).\n"
				  "Please, commit your changes before you can merge."));
		else
			die(_("You have not concluded your merge (MERGE_HEAD exists)."));
	}
	if (file_exists(git_path("CHERRY_PICK_HEAD"))) {
		if (advice_resolve_conflict)
			die(_("You have not concluded your cherry-pick (CHERRY_PICK_HEAD exists).\n"
			    "Please, commit your changes before you can merge."));
		else
			die(_("You have not concluded your cherry-pick (CHERRY_PICK_HEAD exists)."));
	}
	resolve_undo_clear();

	if (verbosity < 0)
		show_diffstat = 0;

	if (squash) {
		if (!allow_fast_forward)
			die(_("You cannot combine --squash with --no-ff."));
		option_commit = 0;
	}

	if (!allow_fast_forward && fast_forward_only)
		die(_("You cannot combine --no-ff with --ff-only."));

	if (!abort_current_merge) {
		if (!argc) {
			if (default_to_upstream)
				argc = setup_with_upstream(&argv);
			else
				die(_("No commit specified and merge.defaultToUpstream not set."));
		} else if (argc == 1 && !strcmp(argv[0], "-"))
			argv[0] = "@{-1}";
	}
	if (!argc)
		usage_with_options(builtin_merge_usage,
//.........这里部分代码省略.........

int main(int argc, char *argv[])
{
   int ret;
   /* etterlog copyright */
   globals_alloc();
   fprintf(stdout, "\n" EC_COLOR_BOLD "%s %s" EC_COLOR_END " copyright %s %s\n\n", 
                      GBL_PROGRAM, EC_VERSION, EC_COPYRIGHT, EC_AUTHORS);
  
  
   /* allocate the global target */
   SAFE_CALLOC(GBL_TARGET, 1, sizeof(struct target_env));
  
   /* initialize to all target */
   GBL_TARGET->all_mac = 1;
   GBL_TARGET->all_ip = 1;
#ifdef WITH_IPV6
   GBL_TARGET->all_ip6 = 1;
#endif
   GBL_TARGET->all_port = 1;
   
   /* getopt related parsing...  */
   parse_options(argc, argv);

   /* get the global header */
   ret = get_header(&GBL->hdr);
   if (ret == -E_INVALID)
      FATAL_ERROR("Invalid log file");
   
   fprintf(stderr, "Log file version    : %s\n", GBL->hdr.version);
   /* display the date. ec_ctime() has no newline at end. */
   fprintf(stderr, "Timestamp           : %s [%lu]\n", ec_ctime(&GBL->hdr.tv), GBL->hdr.tv.tv_usec);
   fprintf(stderr, "Type                : %s\n\n", (GBL->hdr.type == LOG_PACKET) ? "LOG_PACKET" : "LOG_INFO" );
  
   
   /* analyze the logfile */
   if (GBL_OPTIONS->analyze)
      analyze();

   /* rewind the log file and skip the global header */
   gzrewind(GBL_LOG_FD);
   get_header(&GBL->hdr);
   
   /* create the connection table (respecting the filters) */
   if (GBL_OPTIONS->connections)
      conn_table_create();

   /* display the connection table */
   if (GBL_OPTIONS->connections && !GBL_OPTIONS->decode)
      conn_table_display();

   /* extract files from the connections */
   if (GBL_OPTIONS->decode)
      conn_decode();
   
   /* not interested in the content... only analysis */
   if (GBL_OPTIONS->analyze || GBL_OPTIONS->connections)
      return 0;
   
   /* display the content of the logfile */
   display();
   
   globals_free();

   return 0;
}

int cmd_bench(int argc, const char **argv)
{
	struct collection *coll;
	int ret = 0;

	if (argc < 2) {
		/* No collection specified. */
		print_usage();
		goto end;
	}

	argc = parse_options(argc, argv, bench_options, bench_usage,
			     PARSE_OPT_STOP_AT_NON_OPTION);

	bench_format = bench_str2int(bench_format_str);
	if (bench_format == BENCH_FORMAT_UNKNOWN) {
		printf("Unknown format descriptor: '%s'\n", bench_format_str);
		goto end;
	}

	if (bench_repeat == 0) {
		printf("Invalid repeat option: Must specify a positive value\n");
		goto end;
	}

	if (argc < 1) {
		print_usage();
		goto end;
	}

	if (!strcmp(argv[0], "all")) {
		run_all_collections();
		goto end;
	}

	for_each_collection(coll) {
		struct bench *bench;

		if (strcmp(coll->name, argv[0]))
			continue;

		if (argc < 2) {
			/* No bench specified. */
			dump_benchmarks(coll);
			goto end;
		}

		if (!strcmp(argv[1], "all")) {
			run_collection(coll);
			goto end;
		}

		for_each_bench(coll, bench) {
			if (strcmp(bench->name, argv[1]))
				continue;

			if (bench_format == BENCH_FORMAT_DEFAULT)
				printf("# Running '%s/%s' benchmark:\n", coll->name, bench->name);
			fflush(stdout);
			ret = run_bench(coll->name, bench->name, bench->fn, argc-1, argv+1);
			goto end;
		}

		if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) {
			dump_benchmarks(coll);
			goto end;
		}

		printf("Unknown benchmark: '%s' for collection '%s'\n", argv[1], argv[0]);
		ret = 1;
		goto end;
	}

	printf("Unknown collection: '%s'\n", argv[0]);
	ret = 1;

end:
	return ret;
}

	rec_argv[i++] = strdup("buildid-list");
	rec_argv[i++] = strdup("-i");
	rec_argv[i++] = strdup(file_name);
	for (j = 1; j < argc; j++, i++)
		rec_argv[i] = argv[j];

	BUG_ON(i != rec_argc);

	return cmd_buildid_list(i, rec_argv, NULL);
}

int cmd_kvm(int argc, const char **argv, const char *prefix __used)
{
	perf_host = perf_guest = 0;

	argc = parse_options(argc, argv, kvm_options, kvm_usage,
			PARSE_OPT_STOP_AT_NON_OPTION);
	if (!argc)
		usage_with_options(kvm_usage, kvm_options);

	if (!perf_host)
		perf_guest = 1;

	if (!file_name) {
		if (perf_host && !perf_guest)
			sprintf(name_buffer, "perf.data.host");
		else if (!perf_host && perf_guest)
			sprintf(name_buffer, "perf.data.guest");
		else
			sprintf(name_buffer, "perf.data.kvm");
		file_name = name_buffer;
	}