115 lines
2.6 KiB
C
115 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2020 Namjae Jeon <linkinjeon@kernel.org>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <errno.h>
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#include <locale.h>
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#include "exfat_ondisk.h"
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#include "libexfat.h"
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static void usage(void)
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{
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fprintf(stderr, "Usage: exfatlabel\n");
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fprintf(stderr, "\t-i | --volume-serial Switch to volume serial mode\n");
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fprintf(stderr, "\t-V | --version Show version\n");
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fprintf(stderr, "\t-h | --help Show help\n");
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exit(EXIT_FAILURE);
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}
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static struct option opts[] = {
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{"volume-serial", no_argument, NULL, 'i' },
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{"version", no_argument, NULL, 'V' },
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{"help", no_argument, NULL, 'h' },
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{"?", no_argument, NULL, '?' },
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{NULL, 0, NULL, 0 }
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};
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int main(int argc, char *argv[])
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{
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int c;
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int ret = EXIT_FAILURE;
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struct exfat_blk_dev bd;
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struct exfat_user_input ui;
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bool version_only = false;
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off_t root_clu_off;
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int serial_mode = 0;
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int flags = 0;
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init_user_input(&ui);
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if (!setlocale(LC_CTYPE, ""))
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exfat_err("failed to init locale/codeset\n");
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if (argc == 2)
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flags = EXFAT_GET_VOLUME_LABEL;
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else if (argc == 3)
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flags = EXFAT_SET_VOLUME_LABEL;
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opterr = 0;
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while ((c = getopt_long(argc, argv, "iVh", opts, NULL)) != EOF)
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switch (c) {
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case 'i':
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serial_mode = true;
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if (argc == 3)
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flags = EXFAT_GET_VOLUME_SERIAL;
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else if (argc == 4)
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flags = EXFAT_SET_VOLUME_SERIAL;
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break;
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case 'V':
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version_only = true;
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break;
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case '?':
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case 'h':
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default:
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usage();
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}
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show_version();
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if (version_only)
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exit(EXIT_FAILURE);
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if (argc < 2)
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usage();
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memset(ui.dev_name, 0, sizeof(ui.dev_name));
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snprintf(ui.dev_name, sizeof(ui.dev_name), "%s", argv[serial_mode + 1]);
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ret = exfat_get_blk_dev_info(&ui, &bd);
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if (ret < 0)
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goto out;
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if (serial_mode) {
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/* Mode to change or display volume serial */
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if (flags == EXFAT_GET_VOLUME_SERIAL) {
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ret = exfat_show_volume_serial(&bd, &ui);
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} else if (flags == EXFAT_SET_VOLUME_SERIAL) {
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ui.volume_serial = strtoul(argv[3], NULL, 0);
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ret = exfat_set_volume_serial(&bd, &ui);
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}
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} else {
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/* Mode to change or display volume label */
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root_clu_off = exfat_get_root_entry_offset(&bd);
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if (root_clu_off < 0)
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goto close_fd_out;
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if (flags == EXFAT_GET_VOLUME_LABEL)
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ret = exfat_show_volume_label(&bd, root_clu_off);
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else if (flags == EXFAT_SET_VOLUME_LABEL)
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ret = exfat_set_volume_label(&bd, argv[2], root_clu_off);
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}
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close_fd_out:
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close(bd.dev_fd);
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out:
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return ret;
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}
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