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/*
main.c (08.11.10)
Prints detailed information about exFAT volume.
Free exFAT implementation.
Copyright (C) 2011-2013 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 <fcntl.h>
#include <unistd.h>
#include <inttypes.h>
#include <stdio.h>
#include <string.h>
#include <exfat.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 void usage(const char* prog)
{
fprintf(stderr, "Usage: %s [-s] [-u] [-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;
printf("dumpexfat %u.%u.%u\n",
EXFAT_VERSION_MAJOR, EXFAT_VERSION_MINOR, EXFAT_VERSION_PATCH);
while ((opt = getopt(argc, argv, "suV")) != -1)
{
switch (opt)
{
case 's':
sb_only = true;
break;
case 'u':
used_sectors = true;
break;
case 'V':
puts("Copyright (C) 2011-2013 Andrew Nayenko");
return 0;
default:
usage(argv[0]);
}
}
if (argc - optind != 1)
usage(argv[0]);
spec = argv[optind];
if (sb_only)
return dump_sb(spec);
return dump_full(spec, used_sectors);
}
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