1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <getopt.h>
#include <inttypes.h>
#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sysexits.h>
#include <unistd.h>
#include <string>
#include <vector>
#include <android-base/strings.h>
#include <android-base/parseint.h>
#include <liblp/liblp.h>
using namespace android;
using namespace android::fs_mgr;
static int usage(int /* argc */, char* argv[]) {
fprintf(stderr,
"%s - command-line tool for dumping Android Logical Partition images.\n"
"\n"
"Usage:\n"
" %s [-s,--slot] file-or-device\n"
"\n"
"Options:\n"
" -s, --slot=N Slot number or suffix.\n",
argv[0], argv[0]);
return EX_USAGE;
}
static std::string BuildAttributeString(uint32_t attrs) {
std::vector<std::string> strings;
if (attrs & LP_PARTITION_ATTR_READONLY) strings.emplace_back("readonly");
if (attrs & LP_PARTITION_ATTR_SLOT_SUFFIXED) strings.emplace_back("slot-suffixed");
return strings.empty() ? "none" : android::base::Join(strings, ",");
}
static bool IsBlockDevice(const char* file) {
struct stat s;
return !stat(file, &s) && S_ISBLK(s.st_mode);
}
class FileOrBlockDeviceOpener final : public PartitionOpener {
public:
android::base::unique_fd Open(const std::string& path, int flags) const override {
// Try a local file first.
android::base::unique_fd fd(open(path.c_str(), flags));
if (fd >= 0) {
return fd;
}
return PartitionOpener::Open(path, flags);
}
};
int main(int argc, char* argv[]) {
struct option options[] = {
{ "slot", required_argument, nullptr, 's' },
{ "help", no_argument, nullptr, 'h' },
{ nullptr, 0, nullptr, 0 },
};
int rv;
int index;
uint32_t slot = 0;
while ((rv = getopt_long_only(argc, argv, "s:h", options, &index)) != -1) {
switch (rv) {
case 'h':
return usage(argc, argv);
case 's':
if (!android::base::ParseUint(optarg, &slot)) {
slot = SlotNumberForSlotSuffix(optarg);
}
break;
}
}
if (optind >= argc) {
return usage(argc, argv);
}
const char* file = argv[optind++];
FileOrBlockDeviceOpener opener;
auto pt = ReadMetadata(opener, file, slot);
if (!pt && !IsBlockDevice(file)) {
pt = ReadFromImageFile(file);
}
if (!pt) {
fprintf(stderr, "Failed to read metadata.\n");
return EX_NOINPUT;
}
printf("Metadata version: %u.%u\n", pt->header.major_version, pt->header.minor_version);
printf("Metadata size: %u bytes\n", pt->header.header_size + pt->header.tables_size);
printf("Metadata max size: %u bytes\n", pt->geometry.metadata_max_size);
printf("Metadata slot count: %u\n", pt->geometry.metadata_slot_count);
printf("Partition table:\n");
printf("------------------------\n");
for (const auto& partition : pt->partitions) {
std::string name = GetPartitionName(partition);
std::string group_name = GetPartitionGroupName(pt->groups[partition.group_index]);
printf(" Name: %s\n", name.c_str());
printf(" Group: %s\n", group_name.c_str());
printf(" Attributes: %s\n", BuildAttributeString(partition.attributes).c_str());
printf(" Extents:\n");
uint64_t first_sector = 0;
for (size_t i = 0; i < partition.num_extents; i++) {
const LpMetadataExtent& extent = pt->extents[partition.first_extent_index + i];
printf(" %" PRIu64 " .. %" PRIu64 " ", first_sector,
(first_sector + extent.num_sectors - 1));
first_sector += extent.num_sectors;
if (extent.target_type == LP_TARGET_TYPE_LINEAR) {
const auto& block_device = pt->block_devices[extent.target_source];
std::string device_name = GetBlockDevicePartitionName(block_device);
printf("linear %s %" PRIu64, device_name.c_str(), extent.target_data);
} else if (extent.target_type == LP_TARGET_TYPE_ZERO) {
printf("zero");
}
printf("\n");
}
printf("------------------------\n");
}
printf("Block device table:\n");
printf("------------------------\n");
for (const auto& block_device : pt->block_devices) {
std::string partition_name = GetBlockDevicePartitionName(block_device);
printf(" Partition name: %s\n", partition_name.c_str());
printf(" First sector: %" PRIu64 "\n", block_device.first_logical_sector);
printf(" Size: %" PRIu64 " bytes\n", block_device.size);
printf("------------------------\n");
}
printf("Group table:\n");
printf("------------------------\n");
for (const auto& group : pt->groups) {
std::string group_name = GetPartitionGroupName(group);
printf(" Name: %s\n", group_name.c_str());
printf(" Maximum size: %" PRIx64 "\n", group.maximum_size);
printf("------------------------\n");
}
return EX_OK;
}
|
