+++ /dev/null
-/*
- main.c (08.11.10)
- Prints detailed information about exFAT volume.
-
- Free exFAT implementation.
- Copyright (C) 2011-2018 Andrew Nayenko
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-*/
-
-#include <exfat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <inttypes.h>
-#include <stdio.h>
-#include <string.h>
-
-static void print_generic_info(const struct exfat_super_block* sb)
-{
- printf("Volume serial number 0x%08x\n",
- le32_to_cpu(sb->volume_serial));
- printf("FS version %hhu.%hhu\n",
- sb->version.major, sb->version.minor);
- printf("Sector size %10u\n",
- SECTOR_SIZE(*sb));
- printf("Cluster size %10u\n",
- CLUSTER_SIZE(*sb));
-}
-
-static void print_sector_info(const struct exfat_super_block* sb)
-{
- printf("Sectors count %10"PRIu64"\n",
- le64_to_cpu(sb->sector_count));
-}
-
-static void print_cluster_info(const struct exfat_super_block* sb)
-{
- printf("Clusters count %10u\n",
- le32_to_cpu(sb->cluster_count));
-}
-
-static void print_other_info(const struct exfat_super_block* sb)
-{
- printf("First sector %10"PRIu64"\n",
- le64_to_cpu(sb->sector_start));
- printf("FAT first sector %10u\n",
- le32_to_cpu(sb->fat_sector_start));
- printf("FAT sectors count %10u\n",
- le32_to_cpu(sb->fat_sector_count));
- printf("First cluster sector %10u\n",
- le32_to_cpu(sb->cluster_sector_start));
- printf("Root directory cluster %10u\n",
- le32_to_cpu(sb->rootdir_cluster));
- printf("Volume state 0x%04hx\n",
- le16_to_cpu(sb->volume_state));
- printf("FATs count %10hhu\n",
- sb->fat_count);
- printf("Drive number 0x%02hhx\n",
- sb->drive_no);
- printf("Allocated space %9hhu%%\n",
- sb->allocated_percent);
-}
-
-static int dump_sb(const char* spec)
-{
- struct exfat_dev* dev;
- struct exfat_super_block sb;
-
- dev = exfat_open(spec, EXFAT_MODE_RO);
- if (dev == NULL)
- return 1;
-
- if (exfat_read(dev, &sb, sizeof(struct exfat_super_block)) < 0)
- {
- exfat_close(dev);
- exfat_error("failed to read from '%s'", spec);
- return 1;
- }
- if (memcmp(sb.oem_name, "EXFAT ", sizeof(sb.oem_name)) != 0)
- {
- exfat_close(dev);
- exfat_error("exFAT file system is not found on '%s'", spec);
- return 1;
- }
-
- print_generic_info(&sb);
- print_sector_info(&sb);
- print_cluster_info(&sb);
- print_other_info(&sb);
-
- exfat_close(dev);
- return 0;
-}
-
-static void dump_sectors(struct exfat* ef)
-{
- off_t a = 0, b = 0;
-
- printf("Used sectors ");
- while (exfat_find_used_sectors(ef, &a, &b) == 0)
- printf(" %"PRIu64"-%"PRIu64, a, b);
- puts("");
-}
-
-static int dump_full(const char* spec, bool used_sectors)
-{
- struct exfat ef;
- uint32_t free_clusters;
- uint64_t free_sectors;
-
- if (exfat_mount(&ef, spec, "ro") != 0)
- return 1;
-
- free_clusters = exfat_count_free_clusters(&ef);
- free_sectors = (uint64_t) free_clusters << ef.sb->spc_bits;
-
- printf("Volume label %15s\n", exfat_get_label(&ef));
- print_generic_info(ef.sb);
- print_sector_info(ef.sb);
- printf("Free sectors %10"PRIu64"\n", free_sectors);
- print_cluster_info(ef.sb);
- printf("Free clusters %10u\n", free_clusters);
- print_other_info(ef.sb);
- if (used_sectors)
- dump_sectors(&ef);
-
- exfat_unmount(&ef);
- return 0;
-}
-
-static int dump_file_fragments(const char* spec, const char* path)
-{
- struct exfat ef;
- struct exfat_node* node;
- cluster_t cluster;
- cluster_t next_cluster;
- cluster_t fragment_start_cluster;
- off_t remainder;
- off_t fragment_size = 0;
- int rc = 0;
-
- if (exfat_mount(&ef, spec, "ro") != 0)
- return 1;
-
- rc = exfat_lookup(&ef, &node, path);
- if (rc != 0)
- {
- exfat_unmount(&ef);
- exfat_error("'%s': %s", path, strerror(-rc));
- return 1;
- }
-
- cluster = fragment_start_cluster = node->start_cluster;
- remainder = node->size;
- while (remainder > 0)
- {
- off_t lsize;
-
- if (CLUSTER_INVALID(*ef.sb, cluster))
- {
- exfat_error("'%s' has invalid cluster %#x", path, cluster);
- rc = 1;
- break;
- }
-
- lsize = MIN(CLUSTER_SIZE(*ef.sb), remainder);
- fragment_size += lsize;
- remainder -= lsize;
-
- next_cluster = exfat_next_cluster(&ef, node, cluster);
- if (next_cluster != cluster + 1 || remainder == 0)
- {
- /* next cluster is not contiguous or this is EOF */
- printf("%"PRIu64" %"PRIu64"\n",
- exfat_c2o(&ef, fragment_start_cluster), fragment_size);
- /* start a new fragment */
- fragment_start_cluster = next_cluster;
- fragment_size = 0;
- }
- cluster = next_cluster;
- }
-
- exfat_put_node(&ef, node);
- exfat_unmount(&ef);
- return rc;
-}
-
-static void usage(const char* prog)
-{
- fprintf(stderr, "Usage: %s [-s] [-u] [-f file] [-V] <device>\n", prog);
- exit(1);
-}
-
-int main(int argc, char* argv[])
-{
- int opt;
- const char* spec = NULL;
- bool sb_only = false;
- bool used_sectors = false;
- const char* file_path = NULL;
-
- while ((opt = getopt(argc, argv, "suf:V")) != -1)
- {
- switch (opt)
- {
- case 's':
- sb_only = true;
- break;
- case 'u':
- used_sectors = true;
- break;
- case 'f':
- file_path = optarg;
- break;
- case 'V':
- printf("dumpexfat %s\n", VERSION);
- puts("Copyright (C) 2011-2018 Andrew Nayenko");
- return 0;
- default:
- usage(argv[0]);
- }
- }
- if (argc - optind != 1)
- usage(argv[0]);
- spec = argv[optind];
-
- if (file_path)
- return dump_file_fragments(spec, file_path);
-
- if (sb_only)
- return dump_sb(spec);
-
- return dump_full(spec, used_sectors);
-}
projects / sven / fuse-exfat.git / blobdiff