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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:51:57 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:51:57 +0000 |
commit | 107a9fe33b588acf0db45f3944683a134634a454 (patch) | |
tree | 62e7a2928b706f9f34c2d5a4e1227888cfc537c5 /dump | |
parent | Initial commit. (diff) | |
download | exfatprogs-upstream/1.2.0.tar.xz exfatprogs-upstream/1.2.0.zip |
Adding upstream version 1.2.0.upstream/1.2.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dump')
-rw-r--r-- | dump/Android.bp | 11 | ||||
-rw-r--r-- | dump/Makefile.am | 6 | ||||
-rw-r--r-- | dump/Makefile.in | 642 | ||||
-rw-r--r-- | dump/dump.c | 261 |
4 files changed, 920 insertions, 0 deletions
diff --git a/dump/Android.bp b/dump/Android.bp new file mode 100644 index 0000000..a39b245 --- /dev/null +++ b/dump/Android.bp @@ -0,0 +1,11 @@ +// Copyright 2021 The Android Open Source Project + +cc_binary { + name: "dump.exfat", + + srcs: [ + "dump.c", + ], + defaults: ["exfatprogs-defaults"], + static_libs: ["libexfat"], +} diff --git a/dump/Makefile.am b/dump/Makefile.am new file mode 100644 index 0000000..29c966e --- /dev/null +++ b/dump/Makefile.am @@ -0,0 +1,6 @@ +AM_CFLAGS = -Wall -include $(top_builddir)/config.h -I$(top_srcdir)/include -fno-common +dump_exfat_LDADD = $(top_builddir)/lib/libexfat.a + +sbin_PROGRAMS = dump.exfat + +dump_exfat_SOURCES = dump.c diff --git a/dump/Makefile.in b/dump/Makefile.in new file mode 100644 index 0000000..33cf63c --- /dev/null +++ b/dump/Makefile.in @@ -0,0 +1,642 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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+ +static void usage(void) +{ + fprintf(stderr, "Usage: dump.exfat\n"); + fprintf(stderr, "\t-V | --version Show version\n"); + fprintf(stderr, "\t-h | --help Show help\n"); + + exit(EXIT_FAILURE); +} + +static struct option opts[] = { + {"version", no_argument, NULL, 'V' }, + {"help", no_argument, NULL, 'h' }, + {"?", no_argument, NULL, '?' }, + {NULL, 0, NULL, 0 } +}; + +static unsigned int exfat_count_used_clusters(unsigned char *bitmap, + unsigned long long bitmap_len) +{ + unsigned int count = 0; + unsigned long long i; + + for (i = 0; i < bitmap_len; i++) + count += used_bit[bitmap[i]]; + + return count; +} + +static int exfat_show_ondisk_all_info(struct exfat_blk_dev *bd) +{ + struct pbr *ppbr; + struct bsx64 *pbsx; + struct exfat_dentry *ed; + unsigned int root_clu_off, bitmap_clu_off, bitmap_clu; + unsigned int total_clus, used_clus, clu_offset, root_clu; + unsigned long long bitmap_len; + int ret; + unsigned char *bitmap; + char *volume_label; + + ppbr = malloc(EXFAT_MAX_SECTOR_SIZE); + if (!ppbr) { + exfat_err("Cannot allocate pbr: out of memory\n"); + return -ENOMEM; + } + + /* read main boot sector */ + if (exfat_read(bd->dev_fd, (char *)ppbr, EXFAT_MAX_SECTOR_SIZE, + 0) != (ssize_t)EXFAT_MAX_SECTOR_SIZE) { + exfat_err("main boot sector read failed\n"); + ret = -EIO; + goto free_ppbr; + } + + if (memcmp(ppbr->bpb.oem_name, "EXFAT ", 8) != 0) { + exfat_err("Bad fs_name in boot sector, which does not describe a valid exfat filesystem\n"); + ret = -EINVAL; + goto free_ppbr; + } + + pbsx = &ppbr->bsx; + + if (pbsx->sect_size_bits < EXFAT_MIN_SECT_SIZE_BITS || + pbsx->sect_size_bits > EXFAT_MAX_SECT_SIZE_BITS) { + exfat_err("bogus sector size bits : %u\n", + pbsx->sect_size_bits); + ret = -EINVAL; + goto free_ppbr; + } + + if (pbsx->sect_per_clus_bits > 25 - pbsx->sect_size_bits) { + exfat_err("bogus sectors bits per cluster : %u\n", + pbsx->sect_per_clus_bits); + ret = -EINVAL; + goto free_ppbr; + } + + bd->sector_size_bits = pbsx->sect_size_bits; + bd->sector_size = 1 << pbsx->sect_size_bits; + + clu_offset = le32_to_cpu(pbsx->clu_offset); + total_clus = le32_to_cpu(pbsx->clu_count); + root_clu = le32_to_cpu(pbsx->root_cluster); + + exfat_info("-------------- Dump Boot sector region --------------\n"); + exfat_info("Volume Length(sectors): \t\t%" PRIu64 "\n", + le64_to_cpu(pbsx->vol_length)); + exfat_info("FAT Offset(sector offset): \t\t%u\n", + le32_to_cpu(pbsx->fat_offset)); + exfat_info("FAT Length(sectors): \t\t\t%u\n", + le32_to_cpu(pbsx->fat_length)); + exfat_info("Cluster Heap Offset (sector offset): \t%u\n", clu_offset); + exfat_info("Cluster Count: \t\t\t\t%u\n", total_clus); + exfat_info("Root Cluster (cluster offset): \t\t%u\n", root_clu); + exfat_info("Volume Serial: \t\t\t\t0x%x\n", le32_to_cpu(pbsx->vol_serial)); + exfat_info("Sector Size Bits: \t\t\t%u\n", pbsx->sect_size_bits); + exfat_info("Sector per Cluster bits: \t\t%u\n\n", pbsx->sect_per_clus_bits); + + bd->cluster_size = + 1 << (pbsx->sect_per_clus_bits + pbsx->sect_size_bits); + root_clu_off = exfat_clus_to_blk_dev_off(bd, clu_offset, root_clu); + + ed = malloc(sizeof(struct exfat_dentry)*3); + if (!ed) { + exfat_err("failed to allocate memory\n"); + ret = -ENOMEM; + goto free_ppbr; + } + + ret = exfat_read(bd->dev_fd, ed, sizeof(struct exfat_dentry)*3, + root_clu_off); + if (ret < 0) { + exfat_err("bitmap entry read failed: %d\n", errno); + ret = -EIO; + goto free_entry; + } + + volume_label = exfat_conv_volume_label(&ed[0]); + if (!volume_label) { + ret = -EINVAL; + goto free_entry; + } + + bitmap_clu = le32_to_cpu(ed[1].bitmap_start_clu); + bitmap_clu_off = exfat_clus_to_blk_dev_off(bd, clu_offset, + bitmap_clu); + bitmap_len = le64_to_cpu(ed[1].bitmap_size); + + exfat_info("----------------- Dump Root entries -----------------\n"); + exfat_info("Volume entry type: \t\t\t0x%x\n", ed[0].type); + exfat_info("Volume label: \t\t\t\t%s\n", volume_label); + exfat_info("Volume label character count: \t\t%u\n", ed[0].vol_char_cnt); + + exfat_info("Bitmap entry type: \t\t\t0x%x\n", ed[1].type); + exfat_info("Bitmap start cluster: \t\t\t%x\n", bitmap_clu); + exfat_info("Bitmap size: \t\t\t\t%llu\n", bitmap_len); + + exfat_info("Upcase table entry type: \t\t0x%x\n", ed[2].type); + exfat_info("Upcase table start cluster: \t\t%x\n", + le32_to_cpu(ed[2].upcase_start_clu)); + exfat_info("Upcase table size: \t\t\t%" PRIu64 "\n\n", + le64_to_cpu(ed[2].upcase_size)); + + bitmap = malloc(bitmap_len); + if (!bitmap) { + exfat_err("bitmap allocation failed\n"); + ret = -ENOMEM; + goto free_volume_label; + } + + ret = exfat_read(bd->dev_fd, bitmap, bitmap_len, bitmap_clu_off); + if (ret < 0) { + exfat_err("bitmap entry read failed: %d\n", errno); + ret = -EIO; + free(bitmap); + goto free_volume_label; + } + + total_clus = le32_to_cpu(pbsx->clu_count); + used_clus = exfat_count_used_clusters(bitmap, bitmap_len); + + exfat_info("---------------- Show the statistics ----------------\n"); + exfat_info("Cluster size: \t\t\t\t%u\n", bd->cluster_size); + exfat_info("Total Clusters: \t\t\t%u\n", total_clus); + exfat_info("Free Clusters: \t\t\t\t%u\n", total_clus-used_clus); + ret = 0; + + free(bitmap); + +free_volume_label: + free(volume_label); +free_entry: + free(ed); +free_ppbr: + free(ppbr); + return ret; +} + +int main(int argc, char *argv[]) +{ + int c; + int ret = EXIT_FAILURE; + struct exfat_blk_dev bd; + struct exfat_user_input ui; + bool version_only = false; + + init_user_input(&ui); + + if (!setlocale(LC_CTYPE, "")) + exfat_err("failed to init locale/codeset\n"); + + opterr = 0; + while ((c = getopt_long(argc, argv, "iVh", opts, NULL)) != EOF) + switch (c) { + case 'V': + version_only = true; + break; + case '?': + case 'h': + default: + usage(); + } + + show_version(); + if (version_only) + exit(EXIT_FAILURE); + + if (argc < 2) + usage(); + + memset(ui.dev_name, 0, sizeof(ui.dev_name)); + snprintf(ui.dev_name, sizeof(ui.dev_name), "%s", argv[1]); + + ret = exfat_get_blk_dev_info(&ui, &bd); + if (ret < 0) + goto out; + + ret = exfat_show_ondisk_all_info(&bd); + close(bd.dev_fd); + +out: + return ret; +} |