main.c (08.11.10)
Prints detailed information about exFAT volume.
- Copyright (C) 2010 Andrew Nayenko
+ 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
#include <string.h>
#include <exfat.h>
-static void dump_sb(const struct exfat_super_block* sb)
+static void print_generic_info(const struct exfat_super_block* sb)
{
- printf("First block %10"PRIu64"\n",
- le64_to_cpu(sb->block_start));
- printf("Blocks count %10"PRIu64"\n",
- le64_to_cpu(sb->block_count));
- printf("FAT first block %10u\n",
- le32_to_cpu(sb->fat_block_start));
- printf("FAT blocks count %10u\n",
- le32_to_cpu(sb->fat_block_count));
- printf("First cluster block %10u\n",
- le32_to_cpu(sb->cluster_block_start));
- printf("Clusters count %10u\n",
- le32_to_cpu(sb->cluster_count));
- printf("Root directory cluster %10u\n",
- le32_to_cpu(sb->rootdir_cluster));
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("Volume state 0x%04hx\n",
- le16_to_cpu(sb->volume_state));
- printf("Block size %10u\n",
- BLOCK_SIZE(*sb));
+ 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->allocated_percent);
}
-int main(int argc, char* argv[])
+static int dump_sb(const char* spec)
{
- int fd;
+ struct exfat_dev* dev;
struct exfat_super_block sb;
- if (argc != 2)
- {
- fprintf(stderr, "Usage: %s <device>\n", argv[0]);
+ dev = exfat_open(spec, EXFAT_MODE_RO);
+ if (dev == NULL)
return 1;
- }
- fd = open(argv[1], O_RDONLY);
- if (fd < 0)
+ if (exfat_read(dev, &sb, sizeof(struct exfat_super_block)) < 0)
{
- fprintf(stderr, "failed to open `%s'\n", argv[1]);
- return 1;
- }
- if (read(fd, &sb, sizeof(struct exfat_super_block))
- != sizeof(struct exfat_super_block))
- {
- close(fd);
- fprintf(stderr, "failed to read from `%s'.\n", argv[1]);
+ exfat_close(dev);
+ exfat_error("failed to read from `%s'", spec);
return 1;
}
if (memcmp(sb.oem_name, "EXFAT ", sizeof(sb.oem_name)) != 0)
{
- close(fd);
- fprintf(stderr, "exFAT file system is not found on `%s'.\n", argv[1]);
+ exfat_close(dev);
+ exfat_error("exFAT file system is not found on `%s'", spec);
return 1;
}
- dump_sb(&sb);
- close(fd);
+
+ 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[])
+{
+ char** pp;
+ 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);
+
+ for (pp = argv + 1; *pp; pp++)
+ {
+ if (strcmp(*pp, "-s") == 0)
+ sb_only = true;
+ else if (strcmp(*pp, "-u") == 0)
+ used_sectors = true;
+ else if (strcmp(*pp, "-V") == 0)
+ {
+ puts("Copyright (C) 2011-2013 Andrew Nayenko");
+ return 0;
+ }
+ else if (spec == NULL)
+ spec = *pp;
+ else
+ usage(argv[0]);
+ }
+ if (spec == NULL)
+ usage(argv[0]);
+
+ if (sb_only)
+ return dump_sb(spec);
+
+ return dump_full(spec, used_sectors);
+}
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