diff options
Diffstat (limited to 'fs/hpfs/hpfs.h')
-rw-r--r-- | fs/hpfs/hpfs.h | 439 |
1 files changed, 257 insertions, 182 deletions
diff --git a/fs/hpfs/hpfs.h b/fs/hpfs/hpfs.h index 0e84c73cd9c4..8b0650aae328 100644 --- a/fs/hpfs/hpfs.h +++ b/fs/hpfs/hpfs.h | |||
@@ -19,9 +19,13 @@ | |||
19 | For definitive information on HPFS, ask somebody else -- this is guesswork. | 19 | For definitive information on HPFS, ask somebody else -- this is guesswork. |
20 | There are certain to be many mistakes. */ | 20 | There are certain to be many mistakes. */ |
21 | 21 | ||
22 | #if !defined(__LITTLE_ENDIAN) && !defined(__BIG_ENDIAN) | ||
23 | #error unknown endian | ||
24 | #endif | ||
25 | |||
22 | /* Notation */ | 26 | /* Notation */ |
23 | 27 | ||
24 | typedef unsigned secno; /* sector number, partition relative */ | 28 | typedef u32 secno; /* sector number, partition relative */ |
25 | 29 | ||
26 | typedef secno dnode_secno; /* sector number of a dnode */ | 30 | typedef secno dnode_secno; /* sector number of a dnode */ |
27 | typedef secno fnode_secno; /* sector number of an fnode */ | 31 | typedef secno fnode_secno; /* sector number of an fnode */ |
@@ -38,28 +42,28 @@ typedef u32 time32_t; /* 32-bit time_t type */ | |||
38 | 42 | ||
39 | struct hpfs_boot_block | 43 | struct hpfs_boot_block |
40 | { | 44 | { |
41 | unsigned char jmp[3]; | 45 | u8 jmp[3]; |
42 | unsigned char oem_id[8]; | 46 | u8 oem_id[8]; |
43 | unsigned char bytes_per_sector[2]; /* 512 */ | 47 | u8 bytes_per_sector[2]; /* 512 */ |
44 | unsigned char sectors_per_cluster; | 48 | u8 sectors_per_cluster; |
45 | unsigned char n_reserved_sectors[2]; | 49 | u8 n_reserved_sectors[2]; |
46 | unsigned char n_fats; | 50 | u8 n_fats; |
47 | unsigned char n_rootdir_entries[2]; | 51 | u8 n_rootdir_entries[2]; |
48 | unsigned char n_sectors_s[2]; | 52 | u8 n_sectors_s[2]; |
49 | unsigned char media_byte; | 53 | u8 media_byte; |
50 | unsigned short sectors_per_fat; | 54 | u16 sectors_per_fat; |
51 | unsigned short sectors_per_track; | 55 | u16 sectors_per_track; |
52 | unsigned short heads_per_cyl; | 56 | u16 heads_per_cyl; |
53 | unsigned int n_hidden_sectors; | 57 | u32 n_hidden_sectors; |
54 | unsigned int n_sectors_l; /* size of partition */ | 58 | u32 n_sectors_l; /* size of partition */ |
55 | unsigned char drive_number; | 59 | u8 drive_number; |
56 | unsigned char mbz; | 60 | u8 mbz; |
57 | unsigned char sig_28h; /* 28h */ | 61 | u8 sig_28h; /* 28h */ |
58 | unsigned char vol_serno[4]; | 62 | u8 vol_serno[4]; |
59 | unsigned char vol_label[11]; | 63 | u8 vol_label[11]; |
60 | unsigned char sig_hpfs[8]; /* "HPFS " */ | 64 | u8 sig_hpfs[8]; /* "HPFS " */ |
61 | unsigned char pad[448]; | 65 | u8 pad[448]; |
62 | unsigned short magic; /* aa55 */ | 66 | u16 magic; /* aa55 */ |
63 | }; | 67 | }; |
64 | 68 | ||
65 | 69 | ||
@@ -71,31 +75,29 @@ struct hpfs_boot_block | |||
71 | 75 | ||
72 | struct hpfs_super_block | 76 | struct hpfs_super_block |
73 | { | 77 | { |
74 | unsigned magic; /* f995 e849 */ | 78 | u32 magic; /* f995 e849 */ |
75 | unsigned magic1; /* fa53 e9c5, more magic? */ | 79 | u32 magic1; /* fa53 e9c5, more magic? */ |
76 | /*unsigned huh202;*/ /* ?? 202 = N. of B. in 1.00390625 S.*/ | 80 | u8 version; /* version of a filesystem usually 2 */ |
77 | char version; /* version of a filesystem usually 2 */ | 81 | u8 funcversion; /* functional version - oldest version |
78 | char funcversion; /* functional version - oldest version | ||
79 | of filesystem that can understand | 82 | of filesystem that can understand |
80 | this disk */ | 83 | this disk */ |
81 | unsigned short int zero; /* 0 */ | 84 | u16 zero; /* 0 */ |
82 | fnode_secno root; /* fnode of root directory */ | 85 | fnode_secno root; /* fnode of root directory */ |
83 | secno n_sectors; /* size of filesystem */ | 86 | secno n_sectors; /* size of filesystem */ |
84 | unsigned n_badblocks; /* number of bad blocks */ | 87 | u32 n_badblocks; /* number of bad blocks */ |
85 | secno bitmaps; /* pointers to free space bit maps */ | 88 | secno bitmaps; /* pointers to free space bit maps */ |
86 | unsigned zero1; /* 0 */ | 89 | u32 zero1; /* 0 */ |
87 | secno badblocks; /* bad block list */ | 90 | secno badblocks; /* bad block list */ |
88 | unsigned zero3; /* 0 */ | 91 | u32 zero3; /* 0 */ |
89 | time32_t last_chkdsk; /* date last checked, 0 if never */ | 92 | time32_t last_chkdsk; /* date last checked, 0 if never */ |
90 | /*unsigned zero4;*/ /* 0 */ | 93 | time32_t last_optimize; /* date last optimized, 0 if never */ |
91 | time32_t last_optimize; /* date last optimized, 0 if never */ | ||
92 | secno n_dir_band; /* number of sectors in dir band */ | 94 | secno n_dir_band; /* number of sectors in dir band */ |
93 | secno dir_band_start; /* first sector in dir band */ | 95 | secno dir_band_start; /* first sector in dir band */ |
94 | secno dir_band_end; /* last sector in dir band */ | 96 | secno dir_band_end; /* last sector in dir band */ |
95 | secno dir_band_bitmap; /* free space map, 1 dnode per bit */ | 97 | secno dir_band_bitmap; /* free space map, 1 dnode per bit */ |
96 | char volume_name[32]; /* not used */ | 98 | u8 volume_name[32]; /* not used */ |
97 | secno user_id_table; /* 8 preallocated sectors - user id */ | 99 | secno user_id_table; /* 8 preallocated sectors - user id */ |
98 | unsigned zero6[103]; /* 0 */ | 100 | u32 zero6[103]; /* 0 */ |
99 | }; | 101 | }; |
100 | 102 | ||
101 | 103 | ||
@@ -107,44 +109,65 @@ struct hpfs_super_block | |||
107 | 109 | ||
108 | struct hpfs_spare_block | 110 | struct hpfs_spare_block |
109 | { | 111 | { |
110 | unsigned magic; /* f991 1849 */ | 112 | u32 magic; /* f991 1849 */ |
111 | unsigned magic1; /* fa52 29c5, more magic? */ | 113 | u32 magic1; /* fa52 29c5, more magic? */ |
112 | 114 | ||
113 | unsigned dirty: 1; /* 0 clean, 1 "improperly stopped" */ | 115 | #ifdef __LITTLE_ENDIAN |
114 | /*unsigned flag1234: 4;*/ /* unknown flags */ | 116 | u8 dirty: 1; /* 0 clean, 1 "improperly stopped" */ |
115 | unsigned sparedir_used: 1; /* spare dirblks used */ | 117 | u8 sparedir_used: 1; /* spare dirblks used */ |
116 | unsigned hotfixes_used: 1; /* hotfixes used */ | 118 | u8 hotfixes_used: 1; /* hotfixes used */ |
117 | unsigned bad_sector: 1; /* bad sector, corrupted disk (???) */ | 119 | u8 bad_sector: 1; /* bad sector, corrupted disk (???) */ |
118 | unsigned bad_bitmap: 1; /* bad bitmap */ | 120 | u8 bad_bitmap: 1; /* bad bitmap */ |
119 | unsigned fast: 1; /* partition was fast formatted */ | 121 | u8 fast: 1; /* partition was fast formatted */ |
120 | unsigned old_wrote: 1; /* old version wrote to partion */ | 122 | u8 old_wrote: 1; /* old version wrote to partion */ |
121 | unsigned old_wrote_1: 1; /* old version wrote to partion (?) */ | 123 | u8 old_wrote_1: 1; /* old version wrote to partion (?) */ |
122 | unsigned install_dasd_limits: 1; /* HPFS386 flags */ | 124 | #else |
123 | unsigned resynch_dasd_limits: 1; | 125 | u8 old_wrote_1: 1; /* old version wrote to partion (?) */ |
124 | unsigned dasd_limits_operational: 1; | 126 | u8 old_wrote: 1; /* old version wrote to partion */ |
125 | unsigned multimedia_active: 1; | 127 | u8 fast: 1; /* partition was fast formatted */ |
126 | unsigned dce_acls_active: 1; | 128 | u8 bad_bitmap: 1; /* bad bitmap */ |
127 | unsigned dasd_limits_dirty: 1; | 129 | u8 bad_sector: 1; /* bad sector, corrupted disk (???) */ |
128 | unsigned flag67: 2; | 130 | u8 hotfixes_used: 1; /* hotfixes used */ |
129 | unsigned char mm_contlgulty; | 131 | u8 sparedir_used: 1; /* spare dirblks used */ |
130 | unsigned char unused; | 132 | u8 dirty: 1; /* 0 clean, 1 "improperly stopped" */ |
133 | #endif | ||
134 | |||
135 | #ifdef __LITTLE_ENDIAN | ||
136 | u8 install_dasd_limits: 1; /* HPFS386 flags */ | ||
137 | u8 resynch_dasd_limits: 1; | ||
138 | u8 dasd_limits_operational: 1; | ||
139 | u8 multimedia_active: 1; | ||
140 | u8 dce_acls_active: 1; | ||
141 | u8 dasd_limits_dirty: 1; | ||
142 | u8 flag67: 2; | ||
143 | #else | ||
144 | u8 flag67: 2; | ||
145 | u8 dasd_limits_dirty: 1; | ||
146 | u8 dce_acls_active: 1; | ||
147 | u8 multimedia_active: 1; | ||
148 | u8 dasd_limits_operational: 1; | ||
149 | u8 resynch_dasd_limits: 1; | ||
150 | u8 install_dasd_limits: 1; /* HPFS386 flags */ | ||
151 | #endif | ||
152 | |||
153 | u8 mm_contlgulty; | ||
154 | u8 unused; | ||
131 | 155 | ||
132 | secno hotfix_map; /* info about remapped bad sectors */ | 156 | secno hotfix_map; /* info about remapped bad sectors */ |
133 | unsigned n_spares_used; /* number of hotfixes */ | 157 | u32 n_spares_used; /* number of hotfixes */ |
134 | unsigned n_spares; /* number of spares in hotfix map */ | 158 | u32 n_spares; /* number of spares in hotfix map */ |
135 | unsigned n_dnode_spares_free; /* spare dnodes unused */ | 159 | u32 n_dnode_spares_free; /* spare dnodes unused */ |
136 | unsigned n_dnode_spares; /* length of spare_dnodes[] list, | 160 | u32 n_dnode_spares; /* length of spare_dnodes[] list, |
137 | follows in this block*/ | 161 | follows in this block*/ |
138 | secno code_page_dir; /* code page directory block */ | 162 | secno code_page_dir; /* code page directory block */ |
139 | unsigned n_code_pages; /* number of code pages */ | 163 | u32 n_code_pages; /* number of code pages */ |
140 | /*unsigned large_numbers[2];*/ /* ?? */ | 164 | u32 super_crc; /* on HPFS386 and LAN Server this is |
141 | unsigned super_crc; /* on HPFS386 and LAN Server this is | ||
142 | checksum of superblock, on normal | 165 | checksum of superblock, on normal |
143 | OS/2 unused */ | 166 | OS/2 unused */ |
144 | unsigned spare_crc; /* on HPFS386 checksum of spareblock */ | 167 | u32 spare_crc; /* on HPFS386 checksum of spareblock */ |
145 | unsigned zero1[15]; /* unused */ | 168 | u32 zero1[15]; /* unused */ |
146 | dnode_secno spare_dnodes[100]; /* emergency free dnode list */ | 169 | dnode_secno spare_dnodes[100]; /* emergency free dnode list */ |
147 | unsigned zero2[1]; /* room for more? */ | 170 | u32 zero2[1]; /* room for more? */ |
148 | }; | 171 | }; |
149 | 172 | ||
150 | /* The bad block list is 4 sectors long. The first word must be zero, | 173 | /* The bad block list is 4 sectors long. The first word must be zero, |
@@ -179,18 +202,18 @@ struct hpfs_spare_block | |||
179 | 202 | ||
180 | struct code_page_directory | 203 | struct code_page_directory |
181 | { | 204 | { |
182 | unsigned magic; /* 4945 21f7 */ | 205 | u32 magic; /* 4945 21f7 */ |
183 | unsigned n_code_pages; /* number of pointers following */ | 206 | u32 n_code_pages; /* number of pointers following */ |
184 | unsigned zero1[2]; | 207 | u32 zero1[2]; |
185 | struct { | 208 | struct { |
186 | unsigned short ix; /* index */ | 209 | u16 ix; /* index */ |
187 | unsigned short code_page_number; /* code page number */ | 210 | u16 code_page_number; /* code page number */ |
188 | unsigned bounds; /* matches corresponding word | 211 | u32 bounds; /* matches corresponding word |
189 | in data block */ | 212 | in data block */ |
190 | secno code_page_data; /* sector number of a code_page_data | 213 | secno code_page_data; /* sector number of a code_page_data |
191 | containing c.p. array */ | 214 | containing c.p. array */ |
192 | unsigned short index; /* index in c.p. array in that sector*/ | 215 | u16 index; /* index in c.p. array in that sector*/ |
193 | unsigned short unknown; /* some unknown value; usually 0; | 216 | u16 unknown; /* some unknown value; usually 0; |
194 | 2 in Japanese version */ | 217 | 2 in Japanese version */ |
195 | } array[31]; /* unknown length */ | 218 | } array[31]; /* unknown length */ |
196 | }; | 219 | }; |
@@ -201,21 +224,21 @@ struct code_page_directory | |||
201 | 224 | ||
202 | struct code_page_data | 225 | struct code_page_data |
203 | { | 226 | { |
204 | unsigned magic; /* 8945 21f7 */ | 227 | u32 magic; /* 8945 21f7 */ |
205 | unsigned n_used; /* # elements used in c_p_data[] */ | 228 | u32 n_used; /* # elements used in c_p_data[] */ |
206 | unsigned bounds[3]; /* looks a bit like | 229 | u32 bounds[3]; /* looks a bit like |
207 | (beg1,end1), (beg2,end2) | 230 | (beg1,end1), (beg2,end2) |
208 | one byte each */ | 231 | one byte each */ |
209 | unsigned short offs[3]; /* offsets from start of sector | 232 | u16 offs[3]; /* offsets from start of sector |
210 | to start of c_p_data[ix] */ | 233 | to start of c_p_data[ix] */ |
211 | struct { | 234 | struct { |
212 | unsigned short ix; /* index */ | 235 | u16 ix; /* index */ |
213 | unsigned short code_page_number; /* code page number */ | 236 | u16 code_page_number; /* code page number */ |
214 | unsigned short unknown; /* the same as in cp directory */ | 237 | u16 unknown; /* the same as in cp directory */ |
215 | unsigned char map[128]; /* upcase table for chars 80..ff */ | 238 | u8 map[128]; /* upcase table for chars 80..ff */ |
216 | unsigned short zero2; | 239 | u16 zero2; |
217 | } code_page[3]; | 240 | } code_page[3]; |
218 | unsigned char incognita[78]; | 241 | u8 incognita[78]; |
219 | }; | 242 | }; |
220 | 243 | ||
221 | 244 | ||
@@ -255,50 +278,84 @@ struct code_page_data | |||
255 | #define DNODE_MAGIC 0x77e40aae | 278 | #define DNODE_MAGIC 0x77e40aae |
256 | 279 | ||
257 | struct dnode { | 280 | struct dnode { |
258 | unsigned magic; /* 77e4 0aae */ | 281 | u32 magic; /* 77e4 0aae */ |
259 | unsigned first_free; /* offset from start of dnode to | 282 | u32 first_free; /* offset from start of dnode to |
260 | first free dir entry */ | 283 | first free dir entry */ |
261 | unsigned root_dnode:1; /* Is it root dnode? */ | 284 | #ifdef __LITTLE_ENDIAN |
262 | unsigned increment_me:31; /* some kind of activity counter? | 285 | u8 root_dnode: 1; /* Is it root dnode? */ |
263 | Neither HPFS.IFS nor CHKDSK cares | 286 | u8 increment_me: 7; /* some kind of activity counter? */ |
287 | /* Neither HPFS.IFS nor CHKDSK cares | ||
288 | if you change this word */ | ||
289 | #else | ||
290 | u8 increment_me: 7; /* some kind of activity counter? */ | ||
291 | /* Neither HPFS.IFS nor CHKDSK cares | ||
264 | if you change this word */ | 292 | if you change this word */ |
293 | u8 root_dnode: 1; /* Is it root dnode? */ | ||
294 | #endif | ||
295 | u8 increment_me2[3]; | ||
265 | secno up; /* (root dnode) directory's fnode | 296 | secno up; /* (root dnode) directory's fnode |
266 | (nonroot) parent dnode */ | 297 | (nonroot) parent dnode */ |
267 | dnode_secno self; /* pointer to this dnode */ | 298 | dnode_secno self; /* pointer to this dnode */ |
268 | unsigned char dirent[2028]; /* one or more dirents */ | 299 | u8 dirent[2028]; /* one or more dirents */ |
269 | }; | 300 | }; |
270 | 301 | ||
271 | struct hpfs_dirent { | 302 | struct hpfs_dirent { |
272 | unsigned short length; /* offset to next dirent */ | 303 | u16 length; /* offset to next dirent */ |
273 | unsigned first: 1; /* set on phony ^A^A (".") entry */ | 304 | |
274 | unsigned has_acl: 1; | 305 | #ifdef __LITTLE_ENDIAN |
275 | unsigned down: 1; /* down pointer present (after name) */ | 306 | u8 first: 1; /* set on phony ^A^A (".") entry */ |
276 | unsigned last: 1; /* set on phony \377 entry */ | 307 | u8 has_acl: 1; |
277 | unsigned has_ea: 1; /* entry has EA */ | 308 | u8 down: 1; /* down pointer present (after name) */ |
278 | unsigned has_xtd_perm: 1; /* has extended perm list (???) */ | 309 | u8 last: 1; /* set on phony \377 entry */ |
279 | unsigned has_explicit_acl: 1; | 310 | u8 has_ea: 1; /* entry has EA */ |
280 | unsigned has_needea: 1; /* ?? some EA has NEEDEA set | 311 | u8 has_xtd_perm: 1; /* has extended perm list (???) */ |
312 | u8 has_explicit_acl: 1; | ||
313 | u8 has_needea: 1; /* ?? some EA has NEEDEA set | ||
314 | I have no idea why this is | ||
315 | interesting in a dir entry */ | ||
316 | #else | ||
317 | u8 has_needea: 1; /* ?? some EA has NEEDEA set | ||
281 | I have no idea why this is | 318 | I have no idea why this is |
282 | interesting in a dir entry */ | 319 | interesting in a dir entry */ |
283 | unsigned read_only: 1; /* dos attrib */ | 320 | u8 has_explicit_acl: 1; |
284 | unsigned hidden: 1; /* dos attrib */ | 321 | u8 has_xtd_perm: 1; /* has extended perm list (???) */ |
285 | unsigned system: 1; /* dos attrib */ | 322 | u8 has_ea: 1; /* entry has EA */ |
286 | unsigned flag11: 1; /* would be volume label dos attrib */ | 323 | u8 last: 1; /* set on phony \377 entry */ |
287 | unsigned directory: 1; /* dos attrib */ | 324 | u8 down: 1; /* down pointer present (after name) */ |
288 | unsigned archive: 1; /* dos attrib */ | 325 | u8 has_acl: 1; |
289 | unsigned not_8x3: 1; /* name is not 8.3 */ | 326 | u8 first: 1; /* set on phony ^A^A (".") entry */ |
290 | unsigned flag15: 1; | 327 | #endif |
328 | |||
329 | #ifdef __LITTLE_ENDIAN | ||
330 | u8 read_only: 1; /* dos attrib */ | ||
331 | u8 hidden: 1; /* dos attrib */ | ||
332 | u8 system: 1; /* dos attrib */ | ||
333 | u8 flag11: 1; /* would be volume label dos attrib */ | ||
334 | u8 directory: 1; /* dos attrib */ | ||
335 | u8 archive: 1; /* dos attrib */ | ||
336 | u8 not_8x3: 1; /* name is not 8.3 */ | ||
337 | u8 flag15: 1; | ||
338 | #else | ||
339 | u8 flag15: 1; | ||
340 | u8 not_8x3: 1; /* name is not 8.3 */ | ||
341 | u8 archive: 1; /* dos attrib */ | ||
342 | u8 directory: 1; /* dos attrib */ | ||
343 | u8 flag11: 1; /* would be volume label dos attrib */ | ||
344 | u8 system: 1; /* dos attrib */ | ||
345 | u8 hidden: 1; /* dos attrib */ | ||
346 | u8 read_only: 1; /* dos attrib */ | ||
347 | #endif | ||
348 | |||
291 | fnode_secno fnode; /* fnode giving allocation info */ | 349 | fnode_secno fnode; /* fnode giving allocation info */ |
292 | time32_t write_date; /* mtime */ | 350 | time32_t write_date; /* mtime */ |
293 | unsigned file_size; /* file length, bytes */ | 351 | u32 file_size; /* file length, bytes */ |
294 | time32_t read_date; /* atime */ | 352 | time32_t read_date; /* atime */ |
295 | time32_t creation_date; /* ctime */ | 353 | time32_t creation_date; /* ctime */ |
296 | unsigned ea_size; /* total EA length, bytes */ | 354 | u32 ea_size; /* total EA length, bytes */ |
297 | unsigned char no_of_acls : 3; /* number of ACL's */ | 355 | u8 no_of_acls; /* number of ACL's (low 3 bits) */ |
298 | unsigned char reserver : 5; | 356 | u8 ix; /* code page index (of filename), see |
299 | unsigned char ix; /* code page index (of filename), see | ||
300 | struct code_page_data */ | 357 | struct code_page_data */ |
301 | unsigned char namelen, name[1]; /* file name */ | 358 | u8 namelen, name[1]; /* file name */ |
302 | /* dnode_secno down; btree down pointer, if present, | 359 | /* dnode_secno down; btree down pointer, if present, |
303 | follows name on next word boundary, or maybe it | 360 | follows name on next word boundary, or maybe it |
304 | precedes next dirent, which is on a word boundary. */ | 361 | precedes next dirent, which is on a word boundary. */ |
@@ -318,38 +375,50 @@ struct hpfs_dirent { | |||
318 | 375 | ||
319 | struct bplus_leaf_node | 376 | struct bplus_leaf_node |
320 | { | 377 | { |
321 | unsigned file_secno; /* first file sector in extent */ | 378 | u32 file_secno; /* first file sector in extent */ |
322 | unsigned length; /* length, sectors */ | 379 | u32 length; /* length, sectors */ |
323 | secno disk_secno; /* first corresponding disk sector */ | 380 | secno disk_secno; /* first corresponding disk sector */ |
324 | }; | 381 | }; |
325 | 382 | ||
326 | struct bplus_internal_node | 383 | struct bplus_internal_node |
327 | { | 384 | { |
328 | unsigned file_secno; /* subtree maps sectors < this */ | 385 | u32 file_secno; /* subtree maps sectors < this */ |
329 | anode_secno down; /* pointer to subtree */ | 386 | anode_secno down; /* pointer to subtree */ |
330 | }; | 387 | }; |
331 | 388 | ||
332 | struct bplus_header | 389 | struct bplus_header |
333 | { | 390 | { |
334 | unsigned hbff: 1; /* high bit of first free entry offset */ | 391 | #ifdef __LITTLE_ENDIAN |
335 | unsigned flag1: 1; | 392 | u8 hbff: 1; /* high bit of first free entry offset */ |
336 | unsigned flag2: 1; | 393 | u8 flag1234: 4; |
337 | unsigned flag3: 1; | 394 | u8 fnode_parent: 1; /* ? we're pointed to by an fnode, |
338 | unsigned flag4: 1; | ||
339 | unsigned fnode_parent: 1; /* ? we're pointed to by an fnode, | ||
340 | the data btree or some ea or the | 395 | the data btree or some ea or the |
341 | main ea bootage pointer ea_secno */ | 396 | main ea bootage pointer ea_secno */ |
342 | /* also can get set in fnodes, which | 397 | /* also can get set in fnodes, which |
343 | may be a chkdsk glitch or may mean | 398 | may be a chkdsk glitch or may mean |
344 | this bit is irrelevant in fnodes, | 399 | this bit is irrelevant in fnodes, |
345 | or this interpretation is all wet */ | 400 | or this interpretation is all wet */ |
346 | unsigned binary_search: 1; /* suggest binary search (unused) */ | 401 | u8 binary_search: 1; /* suggest binary search (unused) */ |
347 | unsigned internal: 1; /* 1 -> (internal) tree of anodes | 402 | u8 internal: 1; /* 1 -> (internal) tree of anodes |
403 | 0 -> (leaf) list of extents */ | ||
404 | #else | ||
405 | u8 internal: 1; /* 1 -> (internal) tree of anodes | ||
348 | 0 -> (leaf) list of extents */ | 406 | 0 -> (leaf) list of extents */ |
349 | unsigned char fill[3]; | 407 | u8 binary_search: 1; /* suggest binary search (unused) */ |
350 | unsigned char n_free_nodes; /* free nodes in following array */ | 408 | u8 fnode_parent: 1; /* ? we're pointed to by an fnode, |
351 | unsigned char n_used_nodes; /* used nodes in following array */ | 409 | the data btree or some ea or the |
352 | unsigned short first_free; /* offset from start of header to | 410 | main ea bootage pointer ea_secno */ |
411 | /* also can get set in fnodes, which | ||
412 | may be a chkdsk glitch or may mean | ||
413 | this bit is irrelevant in fnodes, | ||
414 | or this interpretation is all wet */ | ||
415 | u8 flag1234: 4; | ||
416 | u8 hbff: 1; /* high bit of first free entry offset */ | ||
417 | #endif | ||
418 | u8 fill[3]; | ||
419 | u8 n_free_nodes; /* free nodes in following array */ | ||
420 | u8 n_used_nodes; /* used nodes in following array */ | ||
421 | u16 first_free; /* offset from start of header to | ||
353 | first free node in array */ | 422 | first free node in array */ |
354 | union { | 423 | union { |
355 | struct bplus_internal_node internal[0]; /* (internal) 2-word entries giving | 424 | struct bplus_internal_node internal[0]; /* (internal) 2-word entries giving |
@@ -369,37 +438,38 @@ struct bplus_header | |||
369 | 438 | ||
370 | struct fnode | 439 | struct fnode |
371 | { | 440 | { |
372 | unsigned magic; /* f7e4 0aae */ | 441 | u32 magic; /* f7e4 0aae */ |
373 | unsigned zero1[2]; /* read history */ | 442 | u32 zero1[2]; /* read history */ |
374 | unsigned char len, name[15]; /* true length, truncated name */ | 443 | u8 len, name[15]; /* true length, truncated name */ |
375 | fnode_secno up; /* pointer to file's directory fnode */ | 444 | fnode_secno up; /* pointer to file's directory fnode */ |
376 | /*unsigned zero2[3];*/ | ||
377 | secno acl_size_l; | 445 | secno acl_size_l; |
378 | secno acl_secno; | 446 | secno acl_secno; |
379 | unsigned short acl_size_s; | 447 | u16 acl_size_s; |
380 | char acl_anode; | 448 | u8 acl_anode; |
381 | char zero2; /* history bit count */ | 449 | u8 zero2; /* history bit count */ |
382 | unsigned ea_size_l; /* length of disk-resident ea's */ | 450 | u32 ea_size_l; /* length of disk-resident ea's */ |
383 | secno ea_secno; /* first sector of disk-resident ea's*/ | 451 | secno ea_secno; /* first sector of disk-resident ea's*/ |
384 | unsigned short ea_size_s; /* length of fnode-resident ea's */ | 452 | u16 ea_size_s; /* length of fnode-resident ea's */ |
385 | 453 | ||
386 | unsigned flag0: 1; | 454 | #ifdef __LITTLE_ENDIAN |
387 | unsigned ea_anode: 1; /* 1 -> ea_secno is an anode */ | 455 | u8 flag0: 1; |
388 | unsigned flag2: 1; | 456 | u8 ea_anode: 1; /* 1 -> ea_secno is an anode */ |
389 | unsigned flag3: 1; | 457 | u8 flag234567: 6; |
390 | unsigned flag4: 1; | 458 | #else |
391 | unsigned flag5: 1; | 459 | u8 flag234567: 6; |
392 | unsigned flag6: 1; | 460 | u8 ea_anode: 1; /* 1 -> ea_secno is an anode */ |
393 | unsigned flag7: 1; | 461 | u8 flag0: 1; |
394 | unsigned dirflag: 1; /* 1 -> directory. first & only extent | 462 | #endif |
463 | |||
464 | #ifdef __LITTLE_ENDIAN | ||
465 | u8 dirflag: 1; /* 1 -> directory. first & only extent | ||
395 | points to dnode. */ | 466 | points to dnode. */ |
396 | unsigned flag9: 1; | 467 | u8 flag9012345: 7; |
397 | unsigned flag10: 1; | 468 | #else |
398 | unsigned flag11: 1; | 469 | u8 flag9012345: 7; |
399 | unsigned flag12: 1; | 470 | u8 dirflag: 1; /* 1 -> directory. first & only extent |
400 | unsigned flag13: 1; | 471 | points to dnode. */ |
401 | unsigned flag14: 1; | 472 | #endif |
402 | unsigned flag15: 1; | ||
403 | 473 | ||
404 | struct bplus_header btree; /* b+ tree, 8 extents or 12 subtrees */ | 474 | struct bplus_header btree; /* b+ tree, 8 extents or 12 subtrees */ |
405 | union { | 475 | union { |
@@ -407,17 +477,16 @@ struct fnode | |||
407 | struct bplus_internal_node internal[12]; | 477 | struct bplus_internal_node internal[12]; |
408 | } u; | 478 | } u; |
409 | 479 | ||
410 | unsigned file_size; /* file length, bytes */ | 480 | u32 file_size; /* file length, bytes */ |
411 | unsigned n_needea; /* number of EA's with NEEDEA set */ | 481 | u32 n_needea; /* number of EA's with NEEDEA set */ |
412 | char user_id[16]; /* unused */ | 482 | u8 user_id[16]; /* unused */ |
413 | unsigned short ea_offs; /* offset from start of fnode | 483 | u16 ea_offs; /* offset from start of fnode |
414 | to first fnode-resident ea */ | 484 | to first fnode-resident ea */ |
415 | char dasd_limit_treshhold; | 485 | u8 dasd_limit_treshhold; |
416 | char dasd_limit_delta; | 486 | u8 dasd_limit_delta; |
417 | unsigned dasd_limit; | 487 | u32 dasd_limit; |
418 | unsigned dasd_usage; | 488 | u32 dasd_usage; |
419 | /*unsigned zero5[2];*/ | 489 | u8 ea[316]; /* zero or more EA's, packed together |
420 | unsigned char ea[316]; /* zero or more EA's, packed together | ||
421 | with no alignment padding. | 490 | with no alignment padding. |
422 | (Do not use this name, get here | 491 | (Do not use this name, get here |
423 | via fnode + ea_offs. I think.) */ | 492 | via fnode + ea_offs. I think.) */ |
@@ -430,7 +499,7 @@ struct fnode | |||
430 | 499 | ||
431 | struct anode | 500 | struct anode |
432 | { | 501 | { |
433 | unsigned magic; /* 37e4 0aae */ | 502 | u32 magic; /* 37e4 0aae */ |
434 | anode_secno self; /* pointer to this anode */ | 503 | anode_secno self; /* pointer to this anode */ |
435 | secno up; /* parent anode or fnode */ | 504 | secno up; /* parent anode or fnode */ |
436 | 505 | ||
@@ -440,7 +509,7 @@ struct anode | |||
440 | struct bplus_internal_node internal[60]; | 509 | struct bplus_internal_node internal[60]; |
441 | } u; | 510 | } u; |
442 | 511 | ||
443 | unsigned fill[3]; /* unused */ | 512 | u32 fill[3]; /* unused */ |
444 | }; | 513 | }; |
445 | 514 | ||
446 | 515 | ||
@@ -461,25 +530,31 @@ struct anode | |||
461 | 530 | ||
462 | struct extended_attribute | 531 | struct extended_attribute |
463 | { | 532 | { |
464 | unsigned indirect: 1; /* 1 -> value gives sector number | 533 | #ifdef __LITTLE_ENDIAN |
534 | u8 indirect: 1; /* 1 -> value gives sector number | ||
465 | where real value starts */ | 535 | where real value starts */ |
466 | unsigned anode: 1; /* 1 -> sector is an anode | 536 | u8 anode: 1; /* 1 -> sector is an anode |
537 | that points to fragmented value */ | ||
538 | u8 flag23456: 5; | ||
539 | u8 needea: 1; /* required ea */ | ||
540 | #else | ||
541 | u8 needea: 1; /* required ea */ | ||
542 | u8 flag23456: 5; | ||
543 | u8 anode: 1; /* 1 -> sector is an anode | ||
467 | that points to fragmented value */ | 544 | that points to fragmented value */ |
468 | unsigned flag2: 1; | 545 | u8 indirect: 1; /* 1 -> value gives sector number |
469 | unsigned flag3: 1; | 546 | where real value starts */ |
470 | unsigned flag4: 1; | 547 | #endif |
471 | unsigned flag5: 1; | 548 | u8 namelen; /* length of name, bytes */ |
472 | unsigned flag6: 1; | 549 | u8 valuelen_lo; /* length of value, bytes */ |
473 | unsigned needea: 1; /* required ea */ | 550 | u8 valuelen_hi; /* length of value, bytes */ |
474 | unsigned char namelen; /* length of name, bytes */ | 551 | u8 name[0]; |
475 | unsigned short valuelen; /* length of value, bytes */ | ||
476 | unsigned char name[0]; | ||
477 | /* | 552 | /* |
478 | unsigned char name[namelen]; ascii attrib name | 553 | u8 name[namelen]; ascii attrib name |
479 | unsigned char nul; terminating '\0', not counted | 554 | u8 nul; terminating '\0', not counted |
480 | unsigned char value[valuelen]; value, arbitrary | 555 | u8 value[valuelen]; value, arbitrary |
481 | if this.indirect, valuelen is 8 and the value is | 556 | if this.indirect, valuelen is 8 and the value is |
482 | unsigned length; real length of value, bytes | 557 | u32 length; real length of value, bytes |
483 | secno secno; sector address where it starts | 558 | secno secno; sector address where it starts |
484 | if this.anode, the above sector number is the root of an anode tree | 559 | if this.anode, the above sector number is the root of an anode tree |
485 | which points to the value. | 560 | which points to the value. |