-static int help(void) {
-
- printf("%s [OPTIONS...] [DIRECTORY]\n\n"
- "Replay collected read-ahead data on early boot.\n\n"
- " -h --help Show this help\n"
- " --max-file-size=BYTES Maximum size of files to read ahead\n",
- program_invocation_short_name);
-
- return 0;
-}
-
-static int parse_argv(int argc, char *argv[]) {
-
- enum {
- ARG_FILE_SIZE_MAX
- };
-
- static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "file-size-max", required_argument, NULL, ARG_FILE_SIZE_MAX },
- { NULL, 0, NULL, 0 }
- };
-
- int c;
-
- assert(argc >= 0);
- assert(argv);
-
- while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
-
- switch (c) {
-
- case 'h':
- help();
- return 0;
-
- case ARG_FILE_SIZE_MAX: {
- unsigned long long ull;
-
- if (safe_atollu(optarg, &ull) < 0 || ull <= 0) {
- log_error("Failed to parse maximum file size %s.", optarg);
- return -EINVAL;
- }
-
- arg_file_size_max = (off_t) ull;
- break;
- }
-
- case '?':
- return -EINVAL;
-
- default:
- log_error("Unknown option code %c", c);
- return -EINVAL;
- }
- }
-
- if (optind != argc &&
- optind != argc-1) {
- help();
- return -EINVAL;
- }
-
- return 1;
-}
-
-int main(int argc, char*argv[]) {
- int r;
- const char *root;
-
- log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
- log_parse_environment();
- log_open();
-
- umask(0022);
-
- if ((r = parse_argv(argc, argv)) <= 0)
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-
- root = optind < argc ? argv[optind] : "/";