diff options
Diffstat (limited to 'tune/tune.c')
| -rw-r--r-- | tune/tune.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/tune/tune.c b/tune/tune.c new file mode 100644 index 0000000..f883556 --- /dev/null +++ b/tune/tune.c @@ -0,0 +1,166 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2019 Namjae Jeon <linkinjeon@kernel.org> + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <getopt.h> +#include <errno.h> +#include <locale.h> + +#include "exfat_ondisk.h" +#include "libexfat.h" +#include "exfat_fs.h" + +static void usage(void) +{ + fprintf(stderr, "Usage: tune.exfat\n"); + fprintf(stderr, "\t-l | --print-label Print volume label\n"); + fprintf(stderr, "\t-L | --set-label=label Set volume label\n"); + fprintf(stderr, "\t-u | --print-guid Print volume GUID\n"); + fprintf(stderr, "\t-U | --set-guid=guid Set volume GUID\n"); + fprintf(stderr, "\t-i | --print-serial Print volume serial\n"); + fprintf(stderr, "\t-I | --set-serial=value Set volume serial\n"); + fprintf(stderr, "\t-V | --version Show version\n"); + fprintf(stderr, "\t-v | --verbose Print debug\n"); + fprintf(stderr, "\t-h | --help Show help\n"); + + exit(EXIT_FAILURE); +} + +static struct option opts[] = { + {"print-label", no_argument, NULL, 'l' }, + {"set-label", required_argument, NULL, 'L' }, + {"print-guid", no_argument, NULL, 'u' }, + {"set-guid", required_argument, NULL, 'U' }, + {"print-serial", no_argument, NULL, 'i' }, + {"set-serial", required_argument, NULL, 'I' }, + {"version", no_argument, NULL, 'V' }, + {"verbose", no_argument, NULL, 'v' }, + {"help", no_argument, NULL, 'h' }, + {"?", no_argument, NULL, '?' }, + {NULL, 0, NULL, 0 } +}; + +int main(int argc, char *argv[]) +{ + int c; + int ret = EXIT_FAILURE; + struct exfat_blk_dev bd; + struct exfat_user_input ui; + bool version_only = false; + int flags = 0; + char label_input[VOLUME_LABEL_BUFFER_SIZE]; + struct exfat *exfat = NULL; + struct pbr *bs; + + init_user_input(&ui); + + if (!setlocale(LC_CTYPE, "")) + exfat_err("failed to init locale/codeset\n"); + + opterr = 0; + while ((c = getopt_long(argc, argv, "I:iL:lU:uVvh", opts, NULL)) != EOF) + switch (c) { + case 'l': + flags = EXFAT_GET_VOLUME_LABEL; + break; + case 'L': + snprintf(label_input, sizeof(label_input), "%s", + optarg); + flags = EXFAT_SET_VOLUME_LABEL; + break; + case 'u': + flags = EXFAT_GET_VOLUME_GUID; + break; + case 'U': + if (*optarg != '\0' && *optarg != '\r') + ui.guid = optarg; + flags = EXFAT_SET_VOLUME_GUID; + break; + case 'i': + flags = EXFAT_GET_VOLUME_SERIAL; + break; + case 'I': + ui.volume_serial = strtoul(optarg, NULL, 0); + flags = EXFAT_SET_VOLUME_SERIAL; + break; + case 'V': + version_only = true; + break; + case 'v': + print_level = EXFAT_DEBUG; + break; + case '?': + case 'h': + default: + usage(); + } + + show_version(); + if (version_only) + exit(EXIT_FAILURE); + + if (argc < 3) + usage(); + + memset(ui.dev_name, 0, sizeof(ui.dev_name)); + snprintf(ui.dev_name, sizeof(ui.dev_name), "%s", argv[argc - 1]); + + ret = exfat_get_blk_dev_info(&ui, &bd); + if (ret < 0) + goto out; + + /* Mode to change or display volume serial */ + if (flags == EXFAT_GET_VOLUME_SERIAL) { + ret = exfat_show_volume_serial(bd.dev_fd); + goto close_fd_out; + } else if (flags == EXFAT_SET_VOLUME_SERIAL) { + ret = exfat_set_volume_serial(&bd, &ui); + goto close_fd_out; + } + + ret = read_boot_sect(&bd, &bs); + if (ret) + goto close_fd_out; + + exfat = exfat_alloc_exfat(&bd, bs); + if (!exfat) { + free(bs); + ret = -ENOMEM; + goto close_fd_out; + } + + exfat->root = exfat_alloc_inode(ATTR_SUBDIR); + if (!exfat->root) { + ret = -ENOMEM; + goto close_fd_out; + } + + exfat->root->first_clus = le32_to_cpu(exfat->bs->bsx.root_cluster); + if (exfat_root_clus_count(exfat)) { + exfat_err("failed to follow the cluster chain of root\n"); + exfat_free_inode(exfat->root); + ret = -EINVAL; + goto close_fd_out; + } + + if (flags == EXFAT_GET_VOLUME_LABEL) + ret = exfat_read_volume_label(exfat); + else if (flags == EXFAT_SET_VOLUME_LABEL) + ret = exfat_set_volume_label(exfat, label_input); + else if (flags == EXFAT_GET_VOLUME_GUID) + ret = exfat_read_volume_guid(exfat); + else if (flags == EXFAT_SET_VOLUME_GUID) + ret = exfat_set_volume_guid(exfat, ui.guid); + +close_fd_out: + close(bd.dev_fd); + if (exfat) + exfat_free_exfat(exfat); +out: + return ret; +} |