util-linux/volume_id/volume_id_internal.h

/*
 * volume_id - reads filesystem label and uuid
 *
 * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
 *
 *	This library is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU Lesser General Public
 *	License as published by the Free Software Foundation; either
 *	version 2.1 of the License, or (at your option) any later version.
 *
 *	This library 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
 *	Lesser General Public License for more details.
 *
 *	You should have received a copy of the GNU Lesser General Public
 *	License along with this library; if not, write to the Free Software
 *	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#include "libbb.h"
#include "volume_id.h"

#if __GNUC_PREREQ(4,1)
# pragma GCC visibility push(hidden)
#endif

#define dbg(...) ((void)0)
/* #define dbg(...) bb_error_msg(__VA_ARGS__) */


/* volume_id.h */

#define VOLUME_ID_VERSION		48

#define VOLUME_ID_LABEL_SIZE		64
#define VOLUME_ID_UUID_SIZE		36
#define VOLUME_ID_FORMAT_SIZE		32
#define VOLUME_ID_PARTITIONS_MAX	256

enum volume_id_usage {
	VOLUME_ID_UNUSED,
	VOLUME_ID_UNPROBED,
	VOLUME_ID_OTHER,
	VOLUME_ID_FILESYSTEM,
	VOLUME_ID_PARTITIONTABLE,
	VOLUME_ID_RAID,
	VOLUME_ID_DISKLABEL,
	VOLUME_ID_CRYPTO,
};

#ifdef UNUSED_PARTITION_CODE
struct volume_id_partition {
//	const char	*type;
//	const char	*usage;
//	smallint	usage_id;
//	uint8_t		pt_type_raw;
//	uint64_t	pt_off;
//	uint64_t	pt_len;
};
#endif

struct volume_id {
//	uint8_t		label_raw[VOLUME_ID_LABEL_SIZE];
//	size_t		label_raw_len;
	char		label[VOLUME_ID_LABEL_SIZE+1];
//	uint8_t		uuid_raw[VOLUME_ID_UUID_SIZE];
//	size_t		uuid_raw_len;
	/* uuid is stored in ASCII (not binary) form here: */
	char		uuid[VOLUME_ID_UUID_SIZE+1];
//	char		type_version[VOLUME_ID_FORMAT_SIZE];
//	smallint	usage_id;
//	const char	*usage;
//	const char	*type;

#ifdef UNUSED_PARTITION_CODE
	struct volume_id_partition *partitions;
	size_t		partition_count;
#endif

	int		fd;
	uint8_t		*sbbuf;
	uint8_t		*seekbuf;
	size_t		sbbuf_len;
	uint64_t	seekbuf_off;
	size_t		seekbuf_len;
//	int		fd_close:1;
};

struct volume_id *volume_id_open_node(int fd);
int volume_id_probe_all(struct volume_id *id, uint64_t off, uint64_t size);
void free_volume_id(struct volume_id *id);

/* util.h */

/* size of superblock buffer, reiserfs block is at 64k */
#define SB_BUFFER_SIZE				0x11000
/* size of seek buffer, FAT cluster is 32k max */
#define SEEK_BUFFER_SIZE			0x10000

#define bswap16(x) (uint16_t)	( \
				(((uint16_t)(x) & 0x00ffu) << 8) | \
				(((uint16_t)(x) & 0xff00u) >> 8))

#define bswap32(x) (uint32_t)	( \
				(((uint32_t)(x) & 0xff000000u) >> 24) | \
				(((uint32_t)(x) & 0x00ff0000u) >>  8) | \
				(((uint32_t)(x) & 0x0000ff00u) <<  8) | \
				(((uint32_t)(x) & 0x000000ffu) << 24))

#define bswap64(x) (uint64_t)	( \
				(((uint64_t)(x) & 0xff00000000000000ull) >> 56) | \
				(((uint64_t)(x) & 0x00ff000000000000ull) >> 40) | \
				(((uint64_t)(x) & 0x0000ff0000000000ull) >> 24) | \
				(((uint64_t)(x) & 0x000000ff00000000ull) >>  8) | \
				(((uint64_t)(x) & 0x00000000ff000000ull) <<  8) | \
				(((uint64_t)(x) & 0x0000000000ff0000ull) << 24) | \
				(((uint64_t)(x) & 0x000000000000ff00ull) << 40) | \
				(((uint64_t)(x) & 0x00000000000000ffull) << 56))

#if BB_LITTLE_ENDIAN
#define le16_to_cpu(x) (x)
#define le32_to_cpu(x) (x)
#define le64_to_cpu(x) (x)
#define be16_to_cpu(x) bswap16(x)
#define be32_to_cpu(x) bswap32(x)
#define cpu_to_le16(x) (x)
#define cpu_to_le32(x) (x)
#define cpu_to_be32(x) bswap32(x)
#else
#define le16_to_cpu(x) bswap16(x)
#define le32_to_cpu(x) bswap32(x)
#define le64_to_cpu(x) bswap64(x)
#define be16_to_cpu(x) (x)
#define be32_to_cpu(x) (x)
#define cpu_to_le16(x) bswap16(x)
#define cpu_to_le32(x) bswap32(x)
#define cpu_to_be32(x) (x)
#endif

enum uuid_format {
	UUID_DCE_STRING,
	UUID_DCE,
	UUID_DOS,
	UUID_NTFS,
	UUID_HFS,
};

enum endian {
	LE = 0,
	BE = 1
};

void volume_id_set_unicode16(char *str, size_t len, const uint8_t *buf, enum endian endianess, size_t count);
//void volume_id_set_usage(struct volume_id *id, enum volume_id_usage usage_id);
//void volume_id_set_usage_part(struct volume_id_partition *part, enum volume_id_usage usage_id);
//void volume_id_set_label_raw(struct volume_id *id, const uint8_t *buf, size_t count);
void volume_id_set_label_string(struct volume_id *id, const uint8_t *buf, size_t count);
void volume_id_set_label_unicode16(struct volume_id *id, const uint8_t *buf, enum endian endianess, size_t count);
void volume_id_set_uuid(struct volume_id *id, const uint8_t *buf, enum uuid_format format);
void *volume_id_get_buffer(struct volume_id *id, uint64_t off, size_t len);
void volume_id_free_buffer(struct volume_id *id);


/* Probe routines */

/* RAID */

//int volume_id_probe_highpoint_37x_raid(struct volume_id *id, uint64_t off);
//int volume_id_probe_highpoint_45x_raid(struct volume_id *id, uint64_t off, uint64_t size);

//int volume_id_probe_intel_software_raid(struct volume_id *id, uint64_t off, uint64_t size);

int volume_id_probe_linux_raid(struct volume_id *id, uint64_t off, uint64_t size);

//int volume_id_probe_lsi_mega_raid(struct volume_id *id, uint64_t off, uint64_t size);

//int volume_id_probe_nvidia_raid(struct volume_id *id, uint64_t off, uint64_t size);

//int volume_id_probe_promise_fasttrack_raid(struct volume_id *id, uint64_t off, uint64_t size);

//int volume_id_probe_silicon_medley_raid(struct volume_id *id, uint64_t off, uint64_t size);

//int volume_id_probe_via_raid(struct volume_id *id, uint64_t off, uint64_t size);

//int volume_id_probe_lvm1(struct volume_id *id, uint64_t off);
//int volume_id_probe_lvm2(struct volume_id *id, uint64_t off);

/* FS */

int volume_id_probe_cramfs(struct volume_id *id, uint64_t off);

int volume_id_probe_ext(struct volume_id *id, uint64_t off);

int volume_id_probe_vfat(struct volume_id *id, uint64_t off);

int volume_id_probe_hfs_hfsplus(struct volume_id *id, uint64_t off);

//int volume_id_probe_hpfs(struct volume_id *id, uint64_t off);

int volume_id_probe_iso9660(struct volume_id *id, uint64_t off);

int volume_id_probe_jfs(struct volume_id *id, uint64_t off);

int volume_id_probe_linux_swap(struct volume_id *id, uint64_t off);

int volume_id_probe_luks(struct volume_id *id, uint64_t off);

//int volume_id_probe_mac_partition_map(struct volume_id *id, uint64_t off);

//int volume_id_probe_minix(struct volume_id *id, uint64_t off);

//int volume_id_probe_msdos_part_table(struct volume_id *id, uint64_t off);

int volume_id_probe_ntfs(struct volume_id *id, uint64_t off);

int volume_id_probe_ocfs2(struct volume_id *id, uint64_t off);

int volume_id_probe_reiserfs(struct volume_id *id, uint64_t off);

int volume_id_probe_romfs(struct volume_id *id, uint64_t off);

int volume_id_probe_sysv(struct volume_id *id, uint64_t off);

int volume_id_probe_udf(struct volume_id *id, uint64_t off);

//int volume_id_probe_ufs(struct volume_id *id, uint64_t off);

int volume_id_probe_xfs(struct volume_id *id, uint64_t off);

#if __GNUC_PREREQ(4,1)
# pragma GCC visibility pop
#endif
1	/*
2	* volume_id - reads filesystem label and uuid
3	*
4	* Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
5	*
6	* This library is free software; you can redistribute it and/or
7	* modify it under the terms of the GNU Lesser General Public
8	* License as published by the Free Software Foundation; either
9	* version 2.1 of the License, or (at your option) any later version.
10	*
11	* This library is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14	* Lesser General Public License for more details.
15	*
16	* You should have received a copy of the GNU Lesser General Public
17	* License along with this library; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19	*/
20
21	#include "libbb.h"
22	#include "volume_id.h"
23
24	#if __GNUC_PREREQ(4,1)
25	# pragma GCC visibility push(hidden)
26	#endif
27
28	#define dbg(...) ((void)0)
29	/* #define dbg(...) bb_error_msg(__VA_ARGS__) */
30
31
32	/* volume_id.h */
33
34	#define VOLUME_ID_VERSION 48
35
36	#define VOLUME_ID_LABEL_SIZE 64
37	#define VOLUME_ID_UUID_SIZE 36
38	#define VOLUME_ID_FORMAT_SIZE 32
39	#define VOLUME_ID_PARTITIONS_MAX 256
40
41	enum volume_id_usage {
42	VOLUME_ID_UNUSED,
43	VOLUME_ID_UNPROBED,
44	VOLUME_ID_OTHER,
45	VOLUME_ID_FILESYSTEM,
46	VOLUME_ID_PARTITIONTABLE,
47	VOLUME_ID_RAID,
48	VOLUME_ID_DISKLABEL,
49	VOLUME_ID_CRYPTO,
50	};
51
52	#ifdef UNUSED_PARTITION_CODE
53	struct volume_id_partition {
54	// const char *type;
55	// const char *usage;
56	// smallint usage_id;
57	// uint8_t pt_type_raw;
58	// uint64_t pt_off;
59	// uint64_t pt_len;
60	};
61	#endif
62
63	struct volume_id {
64	// uint8_t label_raw[VOLUME_ID_LABEL_SIZE];
65	// size_t label_raw_len;
66	char label[VOLUME_ID_LABEL_SIZE+1];
67	// uint8_t uuid_raw[VOLUME_ID_UUID_SIZE];
68	// size_t uuid_raw_len;
69	/* uuid is stored in ASCII (not binary) form here: */
70	char uuid[VOLUME_ID_UUID_SIZE+1];
71	// char type_version[VOLUME_ID_FORMAT_SIZE];
72	// smallint usage_id;
73	// const char *usage;
74	// const char *type;
75
76	#ifdef UNUSED_PARTITION_CODE
77	struct volume_id_partition *partitions;
78	size_t partition_count;
79	#endif
80
81	int fd;
82	uint8_t *sbbuf;
83	uint8_t *seekbuf;
84	size_t sbbuf_len;
85	uint64_t seekbuf_off;
86	size_t seekbuf_len;
87	// int fd_close:1;
88	};
89
90	struct volume_id *volume_id_open_node(int fd);
91	int volume_id_probe_all(struct volume_id *id, uint64_t off, uint64_t size);
92	void free_volume_id(struct volume_id *id);
93
94	/* util.h */
95
96	/* size of superblock buffer, reiserfs block is at 64k */
97	#define SB_BUFFER_SIZE 0x11000
98	/* size of seek buffer, FAT cluster is 32k max */
99	#define SEEK_BUFFER_SIZE 0x10000
100
101	#define bswap16(x) (uint16_t) ( \
102	(((uint16_t)(x) & 0x00ffu) << 8) \| \
103	(((uint16_t)(x) & 0xff00u) >> 8))
104
105	#define bswap32(x) (uint32_t) ( \
106	(((uint32_t)(x) & 0xff000000u) >> 24) \| \
107	(((uint32_t)(x) & 0x00ff0000u) >> 8) \| \
108	(((uint32_t)(x) & 0x0000ff00u) << 8) \| \
109	(((uint32_t)(x) & 0x000000ffu) << 24))
110
111	#define bswap64(x) (uint64_t) ( \
112	(((uint64_t)(x) & 0xff00000000000000ull) >> 56) \| \
113	(((uint64_t)(x) & 0x00ff000000000000ull) >> 40) \| \
114	(((uint64_t)(x) & 0x0000ff0000000000ull) >> 24) \| \
115	(((uint64_t)(x) & 0x000000ff00000000ull) >> 8) \| \
116	(((uint64_t)(x) & 0x00000000ff000000ull) << 8) \| \
117	(((uint64_t)(x) & 0x0000000000ff0000ull) << 24) \| \
118	(((uint64_t)(x) & 0x000000000000ff00ull) << 40) \| \
119	(((uint64_t)(x) & 0x00000000000000ffull) << 56))
120
121	#if BB_LITTLE_ENDIAN
122	#define le16_to_cpu(x) (x)
123	#define le32_to_cpu(x) (x)
124	#define le64_to_cpu(x) (x)
125	#define be16_to_cpu(x) bswap16(x)
126	#define be32_to_cpu(x) bswap32(x)
127	#define cpu_to_le16(x) (x)
128	#define cpu_to_le32(x) (x)
129	#define cpu_to_be32(x) bswap32(x)
130	#else
131	#define le16_to_cpu(x) bswap16(x)
132	#define le32_to_cpu(x) bswap32(x)
133	#define le64_to_cpu(x) bswap64(x)
134	#define be16_to_cpu(x) (x)
135	#define be32_to_cpu(x) (x)
136	#define cpu_to_le16(x) bswap16(x)
137	#define cpu_to_le32(x) bswap32(x)
138	#define cpu_to_be32(x) (x)
139	#endif
140
141	enum uuid_format {
142	UUID_DCE_STRING,
143	UUID_DCE,
144	UUID_DOS,
145	UUID_NTFS,
146	UUID_HFS,
147	};
148
149	enum endian {
150	LE = 0,
151	BE = 1
152	};
153
154	void volume_id_set_unicode16(char str, size_t len, const uint8_t buf, enum endian endianess, size_t count);
155	//void volume_id_set_usage(struct volume_id *id, enum volume_id_usage usage_id);
156	//void volume_id_set_usage_part(struct volume_id_partition *part, enum volume_id_usage usage_id);
157	//void volume_id_set_label_raw(struct volume_id id, const uint8_t buf, size_t count);
158	void volume_id_set_label_string(struct volume_id id, const uint8_t buf, size_t count);
159	void volume_id_set_label_unicode16(struct volume_id id, const uint8_t buf, enum endian endianess, size_t count);
160	void volume_id_set_uuid(struct volume_id id, const uint8_t buf, enum uuid_format format);
161	void volume_id_get_buffer(struct volume_id id, uint64_t off, size_t len);
162	void volume_id_free_buffer(struct volume_id *id);
163
164
165	/* Probe routines */
166
167	/* RAID */
168
169	//int volume_id_probe_highpoint_37x_raid(struct volume_id *id, uint64_t off);
170	//int volume_id_probe_highpoint_45x_raid(struct volume_id *id, uint64_t off, uint64_t size);
171
172	//int volume_id_probe_intel_software_raid(struct volume_id *id, uint64_t off, uint64_t size);
173
174	int volume_id_probe_linux_raid(struct volume_id *id, uint64_t off, uint64_t size);
175
176	//int volume_id_probe_lsi_mega_raid(struct volume_id *id, uint64_t off, uint64_t size);
177
178	//int volume_id_probe_nvidia_raid(struct volume_id *id, uint64_t off, uint64_t size);
179
180	//int volume_id_probe_promise_fasttrack_raid(struct volume_id *id, uint64_t off, uint64_t size);
181
182	//int volume_id_probe_silicon_medley_raid(struct volume_id *id, uint64_t off, uint64_t size);
183
184	//int volume_id_probe_via_raid(struct volume_id *id, uint64_t off, uint64_t size);
185
186	//int volume_id_probe_lvm1(struct volume_id *id, uint64_t off);
187	//int volume_id_probe_lvm2(struct volume_id *id, uint64_t off);
188
189	/* FS */
190
191	int volume_id_probe_cramfs(struct volume_id *id, uint64_t off);
192
193	int volume_id_probe_ext(struct volume_id *id, uint64_t off);
194
195	int volume_id_probe_vfat(struct volume_id *id, uint64_t off);
196
197	int volume_id_probe_hfs_hfsplus(struct volume_id *id, uint64_t off);
198
199	//int volume_id_probe_hpfs(struct volume_id *id, uint64_t off);
200
201	int volume_id_probe_iso9660(struct volume_id *id, uint64_t off);
202
203	int volume_id_probe_jfs(struct volume_id *id, uint64_t off);
204
205	int volume_id_probe_linux_swap(struct volume_id *id, uint64_t off);
206
207	int volume_id_probe_luks(struct volume_id *id, uint64_t off);
208
209	//int volume_id_probe_mac_partition_map(struct volume_id *id, uint64_t off);
210
211	//int volume_id_probe_minix(struct volume_id *id, uint64_t off);
212
213	//int volume_id_probe_msdos_part_table(struct volume_id *id, uint64_t off);
214
215	int volume_id_probe_ntfs(struct volume_id *id, uint64_t off);
216
217	int volume_id_probe_ocfs2(struct volume_id *id, uint64_t off);
218
219	int volume_id_probe_reiserfs(struct volume_id *id, uint64_t off);
220
221	int volume_id_probe_romfs(struct volume_id *id, uint64_t off);
222
223	int volume_id_probe_sysv(struct volume_id *id, uint64_t off);
224
225	int volume_id_probe_udf(struct volume_id *id, uint64_t off);
226
227	//int volume_id_probe_ufs(struct volume_id *id, uint64_t off);
228
229	int volume_id_probe_xfs(struct volume_id *id, uint64_t off);
230
231	#if __GNUC_PREREQ(4,1)
232	# pragma GCC visibility pop
233	#endif