summaryrefslogtreecommitdiffstats
path: root/exfat/dump
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--exfat/dump/dumpexfat.846
-rw-r--r--exfat/dump/main.c180
2 files changed, 226 insertions, 0 deletions
diff --git a/exfat/dump/dumpexfat.8 b/exfat/dump/dumpexfat.8
new file mode 100644
index 000000000..36fb28ad1
--- /dev/null
+++ b/exfat/dump/dumpexfat.8
@@ -0,0 +1,46 @@
+.\" Copyright (C) 2011 Andrew Nayenko
+.\"
+.TH DUMPEXFAT 8 "February 2011"
+.SH NAME
+.B dumpexfat
+\- dump exFAT file system
+.SH SYNOPSIS
+.B exfatlabel
+[
+.B \-s
+]
+[
+.B \-u
+]
+[
+.B \-v
+]
+.I device
+
+.SH DESCRIPTION
+.B dumpexfat
+dumps details about exFAT file system including low-level info. All sizes are
+in bytes.
+
+.SH OPTIONS
+Command line options available:
+.TP
+.B \-s
+Dump only info from super block. May be useful for heavily corrupted file
+systems.
+.TP
+.B \-u
+Dump ranges of used sectors starting from 0 and separated with spaces. May be
+useful for backup tools.
+.TP
+.BI \-v
+Print version and copyright.
+
+.SH EXIT CODES
+Zero is returned on success. Any other code means an error.
+
+.SH AUTHOR
+Andrew Nayenko
+
+.SH SEE ALSO
+.BR mkexfatfs (8)
diff --git a/exfat/dump/main.c b/exfat/dump/main.c
new file mode 100644
index 000000000..d7ea2a365
--- /dev/null
+++ b/exfat/dump/main.c
@@ -0,0 +1,180 @@
+/*
+ main.c (08.11.10)
+ Prints detailed information about exFAT volume.
+
+ Copyright (C) 2011, 2012 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#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[])
+{
+ 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, 2012 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);
+}