source: MondoRescue/branches/2.2.5/mindi-busybox/e2fsprogs/old_e2fsprogs/blkid/probe.h@ 1765

Last change on this file since 1765 was 1765, checked in by Bruno Cornec, 16 years ago

Update to busybox 1.7.2
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1/* vi: set sw=4 ts=4: */
2/*
3 * probe.h - constants and on-disk structures for extracting device data
4 *
5 * Copyright (C) 1999 by Andries Brouwer
6 * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o
7 * Copyright (C) 2001 by Andreas Dilger
8 *
9 * %Begin-Header%
10 * This file may be redistributed under the terms of the
11 * GNU Lesser General Public License.
12 * %End-Header%
13 */
14
15#ifndef _BLKID_PROBE_H
16#define _BLKID_PROBE_H
17
18#include <linux/types.h>
19
20struct blkid_magic;
21
22typedef int (*blkid_probe_t)(int fd, blkid_cache cache, blkid_dev dev,
23 const struct blkid_magic *id, unsigned char *buf);
24
25struct blkid_magic {
26 const char *bim_type; /* type name for this magic */
27 long bim_kboff; /* kilobyte offset of superblock */
28 unsigned bim_sboff; /* byte offset within superblock */
29 unsigned bim_len; /* length of magic */
30 const char *bim_magic; /* magic string */
31 blkid_probe_t bim_probe; /* probe function */
32};
33
34/*
35 * Structures for each of the content types we want to extract information
36 * from. We do not necessarily need the magic field here, because we have
37 * already identified the content type before we get this far. It may still
38 * be useful if there are probe functions which handle multiple content types.
39 */
40struct ext2_super_block {
41 __u32 s_inodes_count;
42 __u32 s_blocks_count;
43 __u32 s_r_blocks_count;
44 __u32 s_free_blocks_count;
45 __u32 s_free_inodes_count;
46 __u32 s_first_data_block;
47 __u32 s_log_block_size;
48 __u32 s_dummy3[7];
49 unsigned char s_magic[2];
50 __u16 s_state;
51 __u32 s_dummy5[8];
52 __u32 s_feature_compat;
53 __u32 s_feature_incompat;
54 __u32 s_feature_ro_compat;
55 unsigned char s_uuid[16];
56 char s_volume_name[16];
57};
58#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x00000004
59#define EXT3_FEATURE_INCOMPAT_RECOVER 0x00000004
60#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x00000008
61
62struct xfs_super_block {
63 unsigned char xs_magic[4];
64 __u32 xs_blocksize;
65 __u64 xs_dblocks;
66 __u64 xs_rblocks;
67 __u32 xs_dummy1[2];
68 unsigned char xs_uuid[16];
69 __u32 xs_dummy2[15];
70 char xs_fname[12];
71 __u32 xs_dummy3[2];
72 __u64 xs_icount;
73 __u64 xs_ifree;
74 __u64 xs_fdblocks;
75};
76
77struct reiserfs_super_block {
78 __u32 rs_blocks_count;
79 __u32 rs_free_blocks;
80 __u32 rs_root_block;
81 __u32 rs_journal_block;
82 __u32 rs_journal_dev;
83 __u32 rs_orig_journal_size;
84 __u32 rs_dummy2[5];
85 __u16 rs_blocksize;
86 __u16 rs_dummy3[3];
87 unsigned char rs_magic[12];
88 __u32 rs_dummy4[5];
89 unsigned char rs_uuid[16];
90 char rs_label[16];
91};
92
93struct jfs_super_block {
94 unsigned char js_magic[4];
95 __u32 js_version;
96 __u64 js_size;
97 __u32 js_bsize;
98 __u32 js_dummy1;
99 __u32 js_pbsize;
100 __u32 js_dummy2[27];
101 unsigned char js_uuid[16];
102 unsigned char js_label[16];
103 unsigned char js_loguuid[16];
104};
105
106struct romfs_super_block {
107 unsigned char ros_magic[8];
108 __u32 ros_dummy1[2];
109 unsigned char ros_volume[16];
110};
111
112struct cramfs_super_block {
113 __u8 magic[4];
114 __u32 size;
115 __u32 flags;
116 __u32 future;
117 __u8 signature[16];
118 struct cramfs_info {
119 __u32 crc;
120 __u32 edition;
121 __u32 blocks;
122 __u32 files;
123 } info;
124 __u8 name[16];
125};
126
127struct swap_id_block {
128/* unsigned char sws_boot[1024]; */
129 __u32 sws_version;
130 __u32 sws_lastpage;
131 __u32 sws_nrbad;
132 unsigned char sws_uuid[16];
133 char sws_volume[16];
134 unsigned char sws_pad[117];
135 __u32 sws_badpg;
136};
137
138/* Yucky misaligned values */
139struct vfat_super_block {
140/* 00*/ unsigned char vs_ignored[3];
141/* 03*/ unsigned char vs_sysid[8];
142/* 0b*/ unsigned char vs_sector_size[2];
143/* 0d*/ __u8 vs_cluster_size;
144/* 0e*/ __u16 vs_reserved;
145/* 10*/ __u8 vs_fats;
146/* 11*/ unsigned char vs_dir_entries[2];
147/* 13*/ unsigned char vs_sectors[2];
148/* 15*/ unsigned char vs_media;
149/* 16*/ __u16 vs_fat_length;
150/* 18*/ __u16 vs_secs_track;
151/* 1a*/ __u16 vs_heads;
152/* 1c*/ __u32 vs_hidden;
153/* 20*/ __u32 vs_total_sect;
154/* 24*/ __u32 vs_fat32_length;
155/* 28*/ __u16 vs_flags;
156/* 2a*/ __u8 vs_version[2];
157/* 2c*/ __u32 vs_root_cluster;
158/* 30*/ __u16 vs_insfo_sector;
159/* 32*/ __u16 vs_backup_boot;
160/* 34*/ __u16 vs_reserved2[6];
161/* 40*/ unsigned char vs_unknown[3];
162/* 43*/ unsigned char vs_serno[4];
163/* 47*/ char vs_label[11];
164/* 52*/ unsigned char vs_magic[8];
165/* 5a*/ unsigned char vs_dummy2[164];
166/*1fe*/ unsigned char vs_pmagic[2];
167};
168
169/* Yucky misaligned values */
170struct msdos_super_block {
171/* 00*/ unsigned char ms_ignored[3];
172/* 03*/ unsigned char ms_sysid[8];
173/* 0b*/ unsigned char ms_sector_size[2];
174/* 0d*/ __u8 ms_cluster_size;
175/* 0e*/ __u16 ms_reserved;
176/* 10*/ __u8 ms_fats;
177/* 11*/ unsigned char ms_dir_entries[2];
178/* 13*/ unsigned char ms_sectors[2];
179/* 15*/ unsigned char ms_media;
180/* 16*/ __u16 ms_fat_length;
181/* 18*/ __u16 ms_secs_track;
182/* 1a*/ __u16 ms_heads;
183/* 1c*/ __u32 ms_hidden;
184/* 20*/ __u32 ms_total_sect;
185/* 24*/ unsigned char ms_unknown[3];
186/* 27*/ unsigned char ms_serno[4];
187/* 2b*/ char ms_label[11];
188/* 36*/ unsigned char ms_magic[8];
189/* 3d*/ unsigned char ms_dummy2[192];
190/*1fe*/ unsigned char ms_pmagic[2];
191};
192
193struct minix_super_block {
194 __u16 ms_ninodes;
195 __u16 ms_nzones;
196 __u16 ms_imap_blocks;
197 __u16 ms_zmap_blocks;
198 __u16 ms_firstdatazone;
199 __u16 ms_log_zone_size;
200 __u32 ms_max_size;
201 unsigned char ms_magic[2];
202 __u16 ms_state;
203 __u32 ms_zones;
204};
205
206struct mdp_superblock_s {
207 __u32 md_magic;
208 __u32 major_version;
209 __u32 minor_version;
210 __u32 patch_version;
211 __u32 gvalid_words;
212 __u32 set_uuid0;
213 __u32 ctime;
214 __u32 level;
215 __u32 size;
216 __u32 nr_disks;
217 __u32 raid_disks;
218 __u32 md_minor;
219 __u32 not_persistent;
220 __u32 set_uuid1;
221 __u32 set_uuid2;
222 __u32 set_uuid3;
223};
224
225struct hfs_super_block {
226 char h_magic[2];
227 char h_dummy[18];
228 __u32 h_blksize;
229};
230
231struct ocfs_volume_header {
232 unsigned char minor_version[4];
233 unsigned char major_version[4];
234 unsigned char signature[128];
235 char mount[128];
236 unsigned char mount_len[2];
237};
238
239struct ocfs_volume_label {
240 unsigned char disk_lock[48];
241 char label[64];
242 unsigned char label_len[2];
243 unsigned char vol_id[16];
244 unsigned char vol_id_len[2];
245};
246
247#define ocfsmajor(o) ((__u32)o.major_version[0] \
248 + (((__u32) o.major_version[1]) << 8) \
249 + (((__u32) o.major_version[2]) << 16) \
250 + (((__u32) o.major_version[3]) << 24))
251#define ocfslabellen(o) ((__u32)o.label_len[0] + (((__u32) o.label_len[1]) << 8))
252#define ocfsmountlen(o) ((__u32)o.mount_len[0] + (((__u32) o.mount_len[1])<<8))
253
254#define OCFS_MAGIC "OracleCFS"
255
256struct ocfs2_super_block {
257 unsigned char signature[8];
258 unsigned char s_dummy1[184];
259 unsigned char s_dummy2[80];
260 char s_label[64];
261 unsigned char s_uuid[16];
262};
263
264#define OCFS2_MIN_BLOCKSIZE 512
265#define OCFS2_MAX_BLOCKSIZE 4096
266
267#define OCFS2_SUPER_BLOCK_BLKNO 2
268
269#define OCFS2_SUPER_BLOCK_SIGNATURE "OCFSV2"
270
271struct oracle_asm_disk_label {
272 char dummy[32];
273 char dl_tag[8];
274 char dl_id[24];
275};
276
277#define ORACLE_ASM_DISK_LABEL_MARKED "ORCLDISK"
278#define ORACLE_ASM_DISK_LABEL_OFFSET 32
279
280#define ISODCL(from, to) (to - from + 1)
281struct iso_volume_descriptor {
282 char type[ISODCL(1,1)]; /* 711 */
283 char id[ISODCL(2,6)];
284 char version[ISODCL(7,7)];
285 char data[ISODCL(8,2048)];
286};
287
288/*
289 * Byte swap functions
290 */
291#ifdef __GNUC__
292#define _INLINE_ static __inline__
293#else /* For Watcom C */
294#define _INLINE_ static inline
295#endif
296
297static __u16 blkid_swab16(__u16 val);
298static __u32 blkid_swab32(__u32 val);
299static __u64 blkid_swab64(__u64 val);
300
301#if ((defined __GNUC__) && \
302 (defined(__i386__) || defined(__i486__) || defined(__i586__)))
303
304#define _BLKID_HAVE_ASM_BITOPS_
305
306_INLINE_ __u32 blkid_swab32(__u32 val)
307{
308#ifdef EXT2FS_REQUIRE_486
309 __asm__("bswap %0" : "=r" (val) : "0" (val));
310#else
311 __asm__("xchgb %b0,%h0\n\t" /* swap lower bytes */
312 "rorl $16,%0\n\t" /* swap words */
313 "xchgb %b0,%h0" /* swap higher bytes */
314 :"=q" (val)
315 : "0" (val));
316#endif
317 return val;
318}
319
320_INLINE_ __u16 blkid_swab16(__u16 val)
321{
322 __asm__("xchgb %b0,%h0" /* swap bytes */ \
323 : "=q" (val) \
324 : "0" (val)); \
325 return val;
326}
327
328_INLINE_ __u64 blkid_swab64(__u64 val)
329{
330 return blkid_swab32(val >> 32) |
331 ( ((__u64)blkid_swab32((__u32)val)) << 32 );
332}
333#endif
334
335#if !defined(_BLKID_HAVE_ASM_BITOPS_)
336
337_INLINE_ __u16 blkid_swab16(__u16 val)
338{
339 return (val >> 8) | (val << 8);
340}
341
342_INLINE_ __u32 blkid_swab32(__u32 val)
343{
344 return (val>>24) | ((val>>8) & 0xFF00) |
345 ((val<<8) & 0xFF0000) | (val<<24);
346}
347
348_INLINE_ __u64 blkid_swab64(__u64 val)
349{
350 return blkid_swab32(val >> 32) |
351 ( ((__u64)blkid_swab32((__u32)val)) << 32 );
352}
353#endif
354
355
356
357#if __BYTE_ORDER == __BIG_ENDIAN
358#define blkid_le16(x) blkid_swab16(x)
359#define blkid_le32(x) blkid_swab32(x)
360#define blkid_le64(x) blkid_swab64(x)
361#define blkid_be16(x) (x)
362#define blkid_be32(x) (x)
363#define blkid_be64(x) (x)
364#else
365#define blkid_le16(x) (x)
366#define blkid_le32(x) (x)
367#define blkid_le64(x) (x)
368#define blkid_be16(x) blkid_swab16(x)
369#define blkid_be32(x) blkid_swab32(x)
370#define blkid_be64(x) blkid_swab64(x)
371#endif
372
373#undef _INLINE_
374
375#endif /* _BLKID_PROBE_H */
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