summaryrefslogtreecommitdiffstats
path: root/abs/core/udev/udev-ntfs-3g.patch
blob: 366c41f20825fc13038fbb19d3b7146627a26eae (plain)
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
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
diff -ruaN udev-135.orig/extras/volume_id/lib/ntfs.c udev-135/extras/volume_id/lib/ntfs.c
--- udev-135.orig/extras/volume_id/lib/ntfs.c	2008-11-13 20:42:56.000000000 +0000
+++ udev-135/extras/volume_id/lib/ntfs.c	2009-06-28 23:31:01.000000000 +0000
@@ -194,7 +194,7 @@
 	}
 
 	volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
-	id->type = "ntfs";
+	id->type = "ntfs-3g";
 	/* we think this is ntfs, but we make sure no other signatures are found */
 	id->force_unique_result = 1;
 	return 0;
diff -ruaN udev-135.orig/extras/volume_id/lib/ntfs.c~ udev-135/extras/volume_id/lib/ntfs.c~
--- udev-135.orig/extras/volume_id/lib/ntfs.c~	1970-01-01 00:00:00.000000000 +0000
+++ udev-135/extras/volume_id/lib/ntfs.c~	2008-11-13 20:42:56.000000000 +0000
@@ -0,0 +1,201 @@
+/*
+ * volume_id - reads filesystem label and uuid
+ *
+ * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * 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 2 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/>.
+ */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+
+#include "libvolume_id.h"
+#include "libvolume_id-private.h"
+
+static struct ntfs_super_block {
+	uint8_t		jump[3];
+	uint8_t		oem_id[8];
+	uint16_t	bytes_per_sector;
+	uint8_t		sectors_per_cluster;
+	uint16_t	reserved_sectors;
+	uint8_t		fats;
+	uint16_t	root_entries;
+	uint16_t	sectors;
+	uint8_t		media_type;
+	uint16_t	sectors_per_fat;
+	uint16_t	sectors_per_track;
+	uint16_t	heads;
+	uint32_t	hidden_sectors;
+	uint32_t	large_sectors;
+	uint16_t	unused[2];
+	uint64_t	number_of_sectors;
+	uint64_t	mft_cluster_location;
+	uint64_t	mft_mirror_cluster_location;
+	int8_t		cluster_per_mft_record;
+	uint8_t		reserved1[3];
+	int8_t		cluster_per_index_record;
+	uint8_t		reserved2[3];
+	uint8_t		volume_serial[8];
+	uint16_t	checksum;
+} PACKED *ns;
+
+static struct master_file_table_record {
+	uint8_t		magic[4];
+	uint16_t	usa_ofs;
+	uint16_t	usa_count;
+	uint64_t	lsn;
+	uint16_t	sequence_number;
+	uint16_t	link_count;
+	uint16_t	attrs_offset;
+	uint16_t	flags;
+	uint32_t	bytes_in_use;
+	uint32_t	bytes_allocated;
+} PACKED *mftr;
+
+static struct file_attribute {
+	uint32_t	type;
+	uint32_t	len;
+	uint8_t		non_resident;
+	uint8_t		name_len;
+	uint16_t	name_offset;
+	uint16_t	flags;
+	uint16_t	instance;
+	uint32_t	value_len;
+	uint16_t	value_offset;
+} PACKED *attr;
+
+static struct volume_info {
+	uint64_t	reserved;
+	uint8_t		major_ver;
+	uint8_t		minor_ver;
+} PACKED *info;
+
+#define MFT_RECORD_VOLUME			3
+#define MFT_RECORD_ATTR_VOLUME_NAME		0x60
+#define MFT_RECORD_ATTR_VOLUME_INFO		0x70
+#define MFT_RECORD_ATTR_OBJECT_ID		0x40
+#define MFT_RECORD_ATTR_END			0xffffffffu
+
+int volume_id_probe_ntfs(struct volume_id *id, uint64_t off, uint64_t size)
+{
+	unsigned int sector_size;
+	unsigned int cluster_size;
+	uint64_t mft_cluster;
+	uint64_t mft_off;
+	unsigned int mft_record_size;
+	unsigned int attr_type;
+	unsigned int attr_off;
+	unsigned int attr_len;
+	unsigned int val_off;
+	unsigned int val_len;
+	const uint8_t *buf;
+	const uint8_t *val;
+
+	info("probing at offset 0x%" PRIx64 "\n", off);
+
+	ns = (struct ntfs_super_block *) volume_id_get_buffer(id, off, 0x200);
+	if (ns == NULL)
+		return -1;
+
+	if (memcmp(ns->oem_id, "NTFS", 4) != 0)
+		return -1;
+
+	volume_id_set_uuid(id, ns->volume_serial, 0, UUID_64BIT_LE);
+
+	sector_size = le16_to_cpu(ns->bytes_per_sector);
+	if (sector_size < 0x200)
+		return -1;
+
+	cluster_size = ns->sectors_per_cluster * sector_size;
+	mft_cluster = le64_to_cpu(ns->mft_cluster_location);
+	mft_off = mft_cluster * cluster_size;
+
+	if (ns->cluster_per_mft_record < 0)
+		/* size = -log2(mft_record_size); normally 1024 Bytes */
+		mft_record_size = 1 << -ns->cluster_per_mft_record;
+	else
+		mft_record_size = ns->cluster_per_mft_record * cluster_size;
+
+	dbg("sectorsize  0x%x\n", sector_size);
+	dbg("clustersize 0x%x\n", cluster_size);
+	dbg("mftcluster  %" PRIu64 "\n", mft_cluster);
+	dbg("mftoffset  0x%" PRIx64 "\n", mft_off);
+	dbg("cluster per mft_record  %i\n", ns->cluster_per_mft_record);
+	dbg("mft record size  %i\n", mft_record_size);
+
+	buf = volume_id_get_buffer(id, off + mft_off + (MFT_RECORD_VOLUME * mft_record_size),
+			 mft_record_size);
+	if (buf == NULL)
+		return -1;
+
+	mftr = (struct master_file_table_record*) buf;
+	dbg("mftr->magic '%c%c%c%c'\n", mftr->magic[0], mftr->magic[1], mftr->magic[2], mftr->magic[3]);
+	if (memcmp(mftr->magic, "FILE", 4) != 0)
+		return -1;
+
+	attr_off = le16_to_cpu(mftr->attrs_offset);
+	dbg("file $Volume's attributes are at offset %i\n", attr_off);
+
+	while (1) {
+		attr = (struct file_attribute*) &buf[attr_off];
+		attr_type = le32_to_cpu(attr->type);
+		attr_len = le16_to_cpu(attr->len);
+		val_off = le16_to_cpu(attr->value_offset);
+		val_len = le32_to_cpu(attr->value_len);
+		attr_off += attr_len;
+
+		if (attr_len == 0)
+			break;
+
+		if (attr_off >= mft_record_size)
+			break;
+
+		if (attr_type == MFT_RECORD_ATTR_END)
+			break;
+
+		dbg("found attribute type 0x%x, len %i, at offset %i\n",
+		    attr_type, attr_len, attr_off);
+
+		if (attr_type == MFT_RECORD_ATTR_VOLUME_INFO) {
+			dbg("found info, len %i\n", val_len);
+			info = (struct volume_info*) (((uint8_t *) attr) + val_off);
+			snprintf(id->type_version, sizeof(id->type_version)-1,
+				 "%u.%u", info->major_ver, info->minor_ver);
+		}
+
+		if (attr_type == MFT_RECORD_ATTR_VOLUME_NAME) {
+			dbg("found label, len %i\n", val_len);
+			if (val_len > VOLUME_ID_LABEL_SIZE)
+				val_len = VOLUME_ID_LABEL_SIZE;
+
+			val = ((uint8_t *) attr) + val_off;
+			volume_id_set_label_raw(id, val, val_len);
+			volume_id_set_label_unicode16(id, val, LE, val_len);
+		}
+	}
+
+	volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
+	id->type = "ntfs";
+	/* we think this is ntfs, but we make sure no other signatures are found */
+	id->force_unique_result = 1;
+	return 0;
+}