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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
5 Copyright (C) 2011, 2012 Andrew Nayenko
6
7 This program is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19*/
20
21#include <fcntl.h>
22#include <unistd.h>
23#include <inttypes.h>
24#include <stdio.h>
25#include <string.h>
26#include <exfat.h>
27
28static void print_generic_info(const struct exfat_super_block* sb)
29{
30 printf("Volume serial number 0x%08x\n",
31 le32_to_cpu(sb->volume_serial));
32 printf("FS version %hhu.%hhu\n",
33 sb->version.major, sb->version.minor);
34 printf("Sector size %10u\n",
35 SECTOR_SIZE(*sb));
36 printf("Cluster size %10u\n",
37 CLUSTER_SIZE(*sb));
38}
39
40static void print_sector_info(const struct exfat_super_block* sb)
41{
42 printf("Sectors count %10"PRIu64"\n",
43 le64_to_cpu(sb->sector_count));
44}
45
46static void print_cluster_info(const struct exfat_super_block* sb)
47{
48 printf("Clusters count %10u\n",
49 le32_to_cpu(sb->cluster_count));
50}
51
52static void print_other_info(const struct exfat_super_block* sb)
53{
54 printf("First sector %10"PRIu64"\n",
55 le64_to_cpu(sb->sector_start));
56 printf("FAT first sector %10u\n",
57 le32_to_cpu(sb->fat_sector_start));
58 printf("FAT sectors count %10u\n",
59 le32_to_cpu(sb->fat_sector_count));
60 printf("First cluster sector %10u\n",
61 le32_to_cpu(sb->cluster_sector_start));
62 printf("Root directory cluster %10u\n",
63 le32_to_cpu(sb->rootdir_cluster));
64 printf("Volume state 0x%04hx\n",
65 le16_to_cpu(sb->volume_state));
66 printf("FATs count %10hhu\n",
67 sb->fat_count);
68 printf("Drive number 0x%02hhx\n",
69 sb->drive_no);
70 printf("Allocated space %9hhu%%\n",
71 sb->allocated_percent);
72}
73
74static int dump_sb(const char* spec)
75{
76 struct exfat_dev* dev;
77 struct exfat_super_block sb;
78
79 dev = exfat_open(spec, EXFAT_MODE_RO);
80 if (dev == NULL)
81 return 1;
82
83 if (exfat_read(dev, &sb, sizeof(struct exfat_super_block)) < 0)
84 {
85 exfat_close(dev);
86 exfat_error("failed to read from `%s'", spec);
87 return 1;
88 }
89 if (memcmp(sb.oem_name, "EXFAT ", sizeof(sb.oem_name)) != 0)
90 {
91 exfat_close(dev);
92 exfat_error("exFAT file system is not found on `%s'", spec);
93 return 1;
94 }
95
96 print_generic_info(&sb);
97 print_sector_info(&sb);
98 print_cluster_info(&sb);
99 print_other_info(&sb);
100
101 exfat_close(dev);
102 return 0;
103}
104
105static void dump_sectors(struct exfat* ef)
106{
107 off_t a = 0, b = 0;
108
109 printf("Used sectors ");
110 while (exfat_find_used_sectors(ef, &a, &b) == 0)
111 printf(" %"PRIu64"-%"PRIu64, a, b);
112 puts("");
113}
114
115static int dump_full(const char* spec, bool used_sectors)
116{
117 struct exfat ef;
118 uint32_t free_clusters;
119 uint64_t free_sectors;
120
121 if (exfat_mount(&ef, spec, "ro") != 0)
122 return 1;
123
124 free_clusters = exfat_count_free_clusters(&ef);
125 free_sectors = (uint64_t) free_clusters << ef.sb->spc_bits;
126
127 printf("Volume label %15s\n", exfat_get_label(&ef));
128 print_generic_info(ef.sb);
129 print_sector_info(ef.sb);
130 printf("Free sectors %10"PRIu64"\n", free_sectors);
131 print_cluster_info(ef.sb);
132 printf("Free clusters %10u\n", free_clusters);
133 print_other_info(ef.sb);
134 if (used_sectors)
135 dump_sectors(&ef);
136
137 exfat_unmount(&ef);
138 return 0;
139}
140
141static void usage(const char* prog)
142{
143 fprintf(stderr, "Usage: %s [-s] [-u] [-v] <device>\n", prog);
144 exit(1);
145}
146
147int main(int argc, char* argv[])
148{
149 char** pp;
150 const char* spec = NULL;
151 bool sb_only = false;
152 bool used_sectors = false;
153
154 printf("dumpexfat %u.%u.%u\n",
155 EXFAT_VERSION_MAJOR, EXFAT_VERSION_MINOR, EXFAT_VERSION_PATCH);
156
157 for (pp = argv + 1; *pp; pp++)
158 {
159 if (strcmp(*pp, "-s") == 0)
160 sb_only = true;
161 else if (strcmp(*pp, "-u") == 0)
162 used_sectors = true;
163 else if (strcmp(*pp, "-v") == 0)
164 {
165 puts("Copyright (C) 2011, 2012 Andrew Nayenko");
166 return 0;
167 }
168 else if (spec == NULL)
169 spec = *pp;
170 else
171 usage(argv[0]);
172 }
173 if (spec == NULL)
174 usage(argv[0]);
175
176 if (sb_only)
177 return dump_sb(spec);
178
179 return dump_full(spec, used_sectors);
180}