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bigbiff bigbiff9c754052013-01-09 09:09:08 -05001/*
2 main.c (08.11.10)
3 Prints detailed information about exFAT volume.
4
bigbiff bigbiff61cdc022013-08-08 08:35:06 -04005 Free exFAT implementation.
bigbiff bigbiff2e33c5e2014-09-04 20:58:41 -04006 Copyright (C) 2011-2014 Andrew Nayenko
bigbiff bigbiff9c754052013-01-09 09:09:08 -05007
bigbiff bigbiff61cdc022013-08-08 08:35:06 -04008 This program is free software; you can redistribute it and/or modify
bigbiff bigbiff9c754052013-01-09 09:09:08 -05009 it under the terms of the GNU General Public License as published by
bigbiff bigbiff61cdc022013-08-08 08:35:06 -040010 the Free Software Foundation, either version 2 of the License, or
bigbiff bigbiff9c754052013-01-09 09:09:08 -050011 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
bigbiff bigbiff61cdc022013-08-08 08:35:06 -040018 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
bigbiff bigbiff9c754052013-01-09 09:09:08 -050021*/
22
23#include <fcntl.h>
24#include <unistd.h>
25#include <inttypes.h>
26#include <stdio.h>
27#include <string.h>
28#include <exfat.h>
29
30static void print_generic_info(const struct exfat_super_block* sb)
31{
32 printf("Volume serial number 0x%08x\n",
33 le32_to_cpu(sb->volume_serial));
34 printf("FS version %hhu.%hhu\n",
35 sb->version.major, sb->version.minor);
36 printf("Sector size %10u\n",
37 SECTOR_SIZE(*sb));
38 printf("Cluster size %10u\n",
39 CLUSTER_SIZE(*sb));
40}
41
42static void print_sector_info(const struct exfat_super_block* sb)
43{
44 printf("Sectors count %10"PRIu64"\n",
45 le64_to_cpu(sb->sector_count));
46}
47
48static void print_cluster_info(const struct exfat_super_block* sb)
49{
50 printf("Clusters count %10u\n",
51 le32_to_cpu(sb->cluster_count));
52}
53
54static void print_other_info(const struct exfat_super_block* sb)
55{
56 printf("First sector %10"PRIu64"\n",
57 le64_to_cpu(sb->sector_start));
58 printf("FAT first sector %10u\n",
59 le32_to_cpu(sb->fat_sector_start));
60 printf("FAT sectors count %10u\n",
61 le32_to_cpu(sb->fat_sector_count));
62 printf("First cluster sector %10u\n",
63 le32_to_cpu(sb->cluster_sector_start));
64 printf("Root directory cluster %10u\n",
65 le32_to_cpu(sb->rootdir_cluster));
66 printf("Volume state 0x%04hx\n",
67 le16_to_cpu(sb->volume_state));
68 printf("FATs count %10hhu\n",
69 sb->fat_count);
70 printf("Drive number 0x%02hhx\n",
71 sb->drive_no);
72 printf("Allocated space %9hhu%%\n",
73 sb->allocated_percent);
74}
75
76static int dump_sb(const char* spec)
77{
78 struct exfat_dev* dev;
79 struct exfat_super_block sb;
80
81 dev = exfat_open(spec, EXFAT_MODE_RO);
82 if (dev == NULL)
83 return 1;
84
85 if (exfat_read(dev, &sb, sizeof(struct exfat_super_block)) < 0)
86 {
87 exfat_close(dev);
bigbiff bigbiff2e33c5e2014-09-04 20:58:41 -040088 exfat_error("failed to read from '%s'", spec);
bigbiff bigbiff9c754052013-01-09 09:09:08 -050089 return 1;
90 }
91 if (memcmp(sb.oem_name, "EXFAT ", sizeof(sb.oem_name)) != 0)
92 {
93 exfat_close(dev);
bigbiff bigbiff2e33c5e2014-09-04 20:58:41 -040094 exfat_error("exFAT file system is not found on '%s'", spec);
bigbiff bigbiff9c754052013-01-09 09:09:08 -050095 return 1;
96 }
97
98 print_generic_info(&sb);
99 print_sector_info(&sb);
100 print_cluster_info(&sb);
101 print_other_info(&sb);
102
103 exfat_close(dev);
104 return 0;
105}
106
107static void dump_sectors(struct exfat* ef)
108{
bigbiff bigbiff2e33c5e2014-09-04 20:58:41 -0400109 off64_t a = 0, b = 0;
bigbiff bigbiff9c754052013-01-09 09:09:08 -0500110
111 printf("Used sectors ");
112 while (exfat_find_used_sectors(ef, &a, &b) == 0)
113 printf(" %"PRIu64"-%"PRIu64, a, b);
114 puts("");
115}
116
117static int dump_full(const char* spec, bool used_sectors)
118{
119 struct exfat ef;
120 uint32_t free_clusters;
121 uint64_t free_sectors;
122
123 if (exfat_mount(&ef, spec, "ro") != 0)
124 return 1;
125
126 free_clusters = exfat_count_free_clusters(&ef);
127 free_sectors = (uint64_t) free_clusters << ef.sb->spc_bits;
128
129 printf("Volume label %15s\n", exfat_get_label(&ef));
130 print_generic_info(ef.sb);
131 print_sector_info(ef.sb);
132 printf("Free sectors %10"PRIu64"\n", free_sectors);
133 print_cluster_info(ef.sb);
134 printf("Free clusters %10u\n", free_clusters);
135 print_other_info(ef.sb);
136 if (used_sectors)
137 dump_sectors(&ef);
138
139 exfat_unmount(&ef);
140 return 0;
141}
142
143static void usage(const char* prog)
144{
bigbiff bigbiff004e2df2013-07-03 14:52:12 -0400145 fprintf(stderr, "Usage: %s [-s] [-u] [-V] <device>\n", prog);
bigbiff bigbiff9c754052013-01-09 09:09:08 -0500146 exit(1);
147}
148
149int main(int argc, char* argv[])
150{
bigbiff bigbiff004e2df2013-07-03 14:52:12 -0400151 int opt;
bigbiff bigbiff9c754052013-01-09 09:09:08 -0500152 const char* spec = NULL;
153 bool sb_only = false;
154 bool used_sectors = false;
155
156 printf("dumpexfat %u.%u.%u\n",
157 EXFAT_VERSION_MAJOR, EXFAT_VERSION_MINOR, EXFAT_VERSION_PATCH);
158
bigbiff bigbiff004e2df2013-07-03 14:52:12 -0400159 while ((opt = getopt(argc, argv, "suV")) != -1)
bigbiff bigbiff9c754052013-01-09 09:09:08 -0500160 {
bigbiff bigbiff004e2df2013-07-03 14:52:12 -0400161 switch (opt)
bigbiff bigbiff9c754052013-01-09 09:09:08 -0500162 {
bigbiff bigbiff004e2df2013-07-03 14:52:12 -0400163 case 's':
164 sb_only = true;
165 break;
166 case 'u':
167 used_sectors = true;
168 break;
169 case 'V':
bigbiff bigbiff2e33c5e2014-09-04 20:58:41 -0400170 puts("Copyright (C) 2011-2014 Andrew Nayenko");
bigbiff bigbiff9c754052013-01-09 09:09:08 -0500171 return 0;
bigbiff bigbiff004e2df2013-07-03 14:52:12 -0400172 default:
bigbiff bigbiff9c754052013-01-09 09:09:08 -0500173 usage(argv[0]);
bigbiff bigbiff004e2df2013-07-03 14:52:12 -0400174 }
bigbiff bigbiff9c754052013-01-09 09:09:08 -0500175 }
bigbiff bigbiff004e2df2013-07-03 14:52:12 -0400176 if (argc - optind != 1)
bigbiff bigbiff9c754052013-01-09 09:09:08 -0500177 usage(argv[0]);
bigbiff bigbiff004e2df2013-07-03 14:52:12 -0400178 spec = argv[optind];
bigbiff bigbiff9c754052013-01-09 09:09:08 -0500179
180 if (sb_only)
181 return dump_sb(spec);
182
183 return dump_full(spec, used_sectors);
184}