--- /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