| 1 | /* |
| 2 | * linux/fs/ufs/balloc.c |
| 3 | * |
| 4 | * Copyright (C) 1998 |
| 5 | * Daniel Pirkl <daniel.pirkl@email.cz> |
| 6 | * Charles University, Faculty of Mathematics and Physics |
| 7 | * |
| 8 | * UFS2 write support Evgeniy Dushistov <dushistov@mail.ru>, 2007 |
| 9 | */ |
| 10 | |
| 11 | #include <linux/fs.h> |
| 12 | #include <linux/stat.h> |
| 13 | #include <linux/time.h> |
| 14 | #include <linux/string.h> |
| 15 | #include <linux/quotaops.h> |
| 16 | #include <linux/buffer_head.h> |
| 17 | #include <linux/capability.h> |
| 18 | #include <linux/bitops.h> |
| 19 | #include <asm/byteorder.h> |
| 20 | |
| 21 | #include "ufs_fs.h" |
| 22 | #include "ufs.h" |
| 23 | #include "swab.h" |
| 24 | #include "util.h" |
| 25 | |
| 26 | #define INVBLOCK ((u64)-1L) |
| 27 | |
| 28 | static u64 ufs_add_fragments(struct inode *, u64, unsigned, unsigned, int *); |
| 29 | static u64 ufs_alloc_fragments(struct inode *, unsigned, u64, unsigned, int *); |
| 30 | static u64 ufs_alloccg_block(struct inode *, struct ufs_cg_private_info *, u64, int *); |
| 31 | static u64 ufs_bitmap_search (struct super_block *, struct ufs_cg_private_info *, u64, unsigned); |
| 32 | static unsigned char ufs_fragtable_8fpb[], ufs_fragtable_other[]; |
| 33 | static void ufs_clusteracct(struct super_block *, struct ufs_cg_private_info *, unsigned, int); |
| 34 | |
| 35 | /* |
| 36 | * Free 'count' fragments from fragment number 'fragment' |
| 37 | */ |
| 38 | void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count) |
| 39 | { |
| 40 | struct super_block * sb; |
| 41 | struct ufs_sb_private_info * uspi; |
| 42 | struct ufs_super_block_first * usb1; |
| 43 | struct ufs_cg_private_info * ucpi; |
| 44 | struct ufs_cylinder_group * ucg; |
| 45 | unsigned cgno, bit, end_bit, bbase, blkmap, i; |
| 46 | u64 blkno; |
| 47 | |
| 48 | sb = inode->i_sb; |
| 49 | uspi = UFS_SB(sb)->s_uspi; |
| 50 | usb1 = ubh_get_usb_first(uspi); |
| 51 | |
| 52 | UFSD("ENTER, fragment %llu, count %u\n", |
| 53 | (unsigned long long)fragment, count); |
| 54 | |
| 55 | if (ufs_fragnum(fragment) + count > uspi->s_fpg) |
| 56 | ufs_error (sb, "ufs_free_fragments", "internal error"); |
| 57 | |
| 58 | lock_super(sb); |
| 59 | |
| 60 | cgno = ufs_dtog(uspi, fragment); |
| 61 | bit = ufs_dtogd(uspi, fragment); |
| 62 | if (cgno >= uspi->s_ncg) { |
| 63 | ufs_panic (sb, "ufs_free_fragments", "freeing blocks are outside device"); |
| 64 | goto failed; |
| 65 | } |
| 66 | |
| 67 | ucpi = ufs_load_cylinder (sb, cgno); |
| 68 | if (!ucpi) |
| 69 | goto failed; |
| 70 | ucg = ubh_get_ucg (UCPI_UBH(ucpi)); |
| 71 | if (!ufs_cg_chkmagic(sb, ucg)) { |
| 72 | ufs_panic (sb, "ufs_free_fragments", "internal error, bad magic number on cg %u", cgno); |
| 73 | goto failed; |
| 74 | } |
| 75 | |
| 76 | end_bit = bit + count; |
| 77 | bbase = ufs_blknum (bit); |
| 78 | blkmap = ubh_blkmap (UCPI_UBH(ucpi), ucpi->c_freeoff, bbase); |
| 79 | ufs_fragacct (sb, blkmap, ucg->cg_frsum, -1); |
| 80 | for (i = bit; i < end_bit; i++) { |
| 81 | if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_freeoff, i)) |
| 82 | ubh_setbit (UCPI_UBH(ucpi), ucpi->c_freeoff, i); |
| 83 | else |
| 84 | ufs_error (sb, "ufs_free_fragments", |
| 85 | "bit already cleared for fragment %u", i); |
| 86 | } |
| 87 | |
| 88 | vfs_dq_free_block(inode, count); |
| 89 | |
| 90 | |
| 91 | fs32_add(sb, &ucg->cg_cs.cs_nffree, count); |
| 92 | uspi->cs_total.cs_nffree += count; |
| 93 | fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, count); |
| 94 | blkmap = ubh_blkmap (UCPI_UBH(ucpi), ucpi->c_freeoff, bbase); |
| 95 | ufs_fragacct(sb, blkmap, ucg->cg_frsum, 1); |
| 96 | |
| 97 | /* |
| 98 | * Trying to reassemble free fragments into block |
| 99 | */ |
| 100 | blkno = ufs_fragstoblks (bbase); |
| 101 | if (ubh_isblockset(UCPI_UBH(ucpi), ucpi->c_freeoff, blkno)) { |
| 102 | fs32_sub(sb, &ucg->cg_cs.cs_nffree, uspi->s_fpb); |
| 103 | uspi->cs_total.cs_nffree -= uspi->s_fpb; |
| 104 | fs32_sub(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, uspi->s_fpb); |
| 105 | if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD) |
| 106 | ufs_clusteracct (sb, ucpi, blkno, 1); |
| 107 | fs32_add(sb, &ucg->cg_cs.cs_nbfree, 1); |
| 108 | uspi->cs_total.cs_nbfree++; |
| 109 | fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nbfree, 1); |
| 110 | if (uspi->fs_magic != UFS2_MAGIC) { |
| 111 | unsigned cylno = ufs_cbtocylno (bbase); |
| 112 | |
| 113 | fs16_add(sb, &ubh_cg_blks(ucpi, cylno, |
| 114 | ufs_cbtorpos(bbase)), 1); |
| 115 | fs32_add(sb, &ubh_cg_blktot(ucpi, cylno), 1); |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | ubh_mark_buffer_dirty (USPI_UBH(uspi)); |
| 120 | ubh_mark_buffer_dirty (UCPI_UBH(ucpi)); |
| 121 | if (sb->s_flags & MS_SYNCHRONOUS) { |
| 122 | ubh_ll_rw_block(SWRITE, UCPI_UBH(ucpi)); |
| 123 | ubh_wait_on_buffer (UCPI_UBH(ucpi)); |
| 124 | } |
| 125 | sb->s_dirt = 1; |
| 126 | |
| 127 | unlock_super (sb); |
| 128 | UFSD("EXIT\n"); |
| 129 | return; |
| 130 | |
| 131 | failed: |
| 132 | unlock_super (sb); |
| 133 | UFSD("EXIT (FAILED)\n"); |
| 134 | return; |
| 135 | } |
| 136 | |
| 137 | /* |
| 138 | * Free 'count' fragments from fragment number 'fragment' (free whole blocks) |
| 139 | */ |
| 140 | void ufs_free_blocks(struct inode *inode, u64 fragment, unsigned count) |
| 141 | { |
| 142 | struct super_block * sb; |
| 143 | struct ufs_sb_private_info * uspi; |
| 144 | struct ufs_super_block_first * usb1; |
| 145 | struct ufs_cg_private_info * ucpi; |
| 146 | struct ufs_cylinder_group * ucg; |
| 147 | unsigned overflow, cgno, bit, end_bit, i; |
| 148 | u64 blkno; |
| 149 | |
| 150 | sb = inode->i_sb; |
| 151 | uspi = UFS_SB(sb)->s_uspi; |
| 152 | usb1 = ubh_get_usb_first(uspi); |
| 153 | |
| 154 | UFSD("ENTER, fragment %llu, count %u\n", |
| 155 | (unsigned long long)fragment, count); |
| 156 | |
| 157 | if ((fragment & uspi->s_fpbmask) || (count & uspi->s_fpbmask)) { |
| 158 | ufs_error (sb, "ufs_free_blocks", "internal error, " |
| 159 | "fragment %llu, count %u\n", |
| 160 | (unsigned long long)fragment, count); |
| 161 | goto failed; |
| 162 | } |
| 163 | |
| 164 | lock_super(sb); |
| 165 | |
| 166 | do_more: |
| 167 | overflow = 0; |
| 168 | cgno = ufs_dtog(uspi, fragment); |
| 169 | bit = ufs_dtogd(uspi, fragment); |
| 170 | if (cgno >= uspi->s_ncg) { |
| 171 | ufs_panic (sb, "ufs_free_blocks", "freeing blocks are outside device"); |
| 172 | goto failed_unlock; |
| 173 | } |
| 174 | end_bit = bit + count; |
| 175 | if (end_bit > uspi->s_fpg) { |
| 176 | overflow = bit + count - uspi->s_fpg; |
| 177 | count -= overflow; |
| 178 | end_bit -= overflow; |
| 179 | } |
| 180 | |
| 181 | ucpi = ufs_load_cylinder (sb, cgno); |
| 182 | if (!ucpi) |
| 183 | goto failed_unlock; |
| 184 | ucg = ubh_get_ucg (UCPI_UBH(ucpi)); |
| 185 | if (!ufs_cg_chkmagic(sb, ucg)) { |
| 186 | ufs_panic (sb, "ufs_free_blocks", "internal error, bad magic number on cg %u", cgno); |
| 187 | goto failed_unlock; |
| 188 | } |
| 189 | |
| 190 | for (i = bit; i < end_bit; i += uspi->s_fpb) { |
| 191 | blkno = ufs_fragstoblks(i); |
| 192 | if (ubh_isblockset(UCPI_UBH(ucpi), ucpi->c_freeoff, blkno)) { |
| 193 | ufs_error(sb, "ufs_free_blocks", "freeing free fragment"); |
| 194 | } |
| 195 | ubh_setblock(UCPI_UBH(ucpi), ucpi->c_freeoff, blkno); |
| 196 | if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD) |
| 197 | ufs_clusteracct (sb, ucpi, blkno, 1); |
| 198 | vfs_dq_free_block(inode, uspi->s_fpb); |
| 199 | |
| 200 | fs32_add(sb, &ucg->cg_cs.cs_nbfree, 1); |
| 201 | uspi->cs_total.cs_nbfree++; |
| 202 | fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nbfree, 1); |
| 203 | |
| 204 | if (uspi->fs_magic != UFS2_MAGIC) { |
| 205 | unsigned cylno = ufs_cbtocylno(i); |
| 206 | |
| 207 | fs16_add(sb, &ubh_cg_blks(ucpi, cylno, |
| 208 | ufs_cbtorpos(i)), 1); |
| 209 | fs32_add(sb, &ubh_cg_blktot(ucpi, cylno), 1); |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | ubh_mark_buffer_dirty (USPI_UBH(uspi)); |
| 214 | ubh_mark_buffer_dirty (UCPI_UBH(ucpi)); |
| 215 | if (sb->s_flags & MS_SYNCHRONOUS) { |
| 216 | ubh_ll_rw_block(SWRITE, UCPI_UBH(ucpi)); |
| 217 | ubh_wait_on_buffer (UCPI_UBH(ucpi)); |
| 218 | } |
| 219 | |
| 220 | if (overflow) { |
| 221 | fragment += count; |
| 222 | count = overflow; |
| 223 | goto do_more; |
| 224 | } |
| 225 | |
| 226 | sb->s_dirt = 1; |
| 227 | unlock_super (sb); |
| 228 | UFSD("EXIT\n"); |
| 229 | return; |
| 230 | |
| 231 | failed_unlock: |
| 232 | unlock_super (sb); |
| 233 | failed: |
| 234 | UFSD("EXIT (FAILED)\n"); |
| 235 | return; |
| 236 | } |
| 237 | |
| 238 | /* |
| 239 | * Modify inode page cache in such way: |
| 240 | * have - blocks with b_blocknr equal to oldb...oldb+count-1 |
| 241 | * get - blocks with b_blocknr equal to newb...newb+count-1 |
| 242 | * also we suppose that oldb...oldb+count-1 blocks |
| 243 | * situated at the end of file. |
| 244 | * |
| 245 | * We can come here from ufs_writepage or ufs_prepare_write, |
| 246 | * locked_page is argument of these functions, so we already lock it. |
| 247 | */ |
| 248 | static void ufs_change_blocknr(struct inode *inode, sector_t beg, |
| 249 | unsigned int count, sector_t oldb, |
| 250 | sector_t newb, struct page *locked_page) |
| 251 | { |
| 252 | const unsigned blks_per_page = |
| 253 | 1 << (PAGE_CACHE_SHIFT - inode->i_blkbits); |
| 254 | const unsigned mask = blks_per_page - 1; |
| 255 | struct address_space * const mapping = inode->i_mapping; |
| 256 | pgoff_t index, cur_index, last_index; |
| 257 | unsigned pos, j, lblock; |
| 258 | sector_t end, i; |
| 259 | struct page *page; |
| 260 | struct buffer_head *head, *bh; |
| 261 | |
| 262 | UFSD("ENTER, ino %lu, count %u, oldb %llu, newb %llu\n", |
| 263 | inode->i_ino, count, |
| 264 | (unsigned long long)oldb, (unsigned long long)newb); |
| 265 | |
| 266 | BUG_ON(!locked_page); |
| 267 | BUG_ON(!PageLocked(locked_page)); |
| 268 | |
| 269 | cur_index = locked_page->index; |
| 270 | end = count + beg; |
| 271 | last_index = end >> (PAGE_CACHE_SHIFT - inode->i_blkbits); |
| 272 | for (i = beg; i < end; i = (i | mask) + 1) { |
| 273 | index = i >> (PAGE_CACHE_SHIFT - inode->i_blkbits); |
| 274 | |
| 275 | if (likely(cur_index != index)) { |
| 276 | page = ufs_get_locked_page(mapping, index); |
| 277 | if (!page)/* it was truncated */ |
| 278 | continue; |
| 279 | if (IS_ERR(page)) {/* or EIO */ |
| 280 | ufs_error(inode->i_sb, __func__, |
| 281 | "read of page %llu failed\n", |
| 282 | (unsigned long long)index); |
| 283 | continue; |
| 284 | } |
| 285 | } else |
| 286 | page = locked_page; |
| 287 | |
| 288 | head = page_buffers(page); |
| 289 | bh = head; |
| 290 | pos = i & mask; |
| 291 | for (j = 0; j < pos; ++j) |
| 292 | bh = bh->b_this_page; |
| 293 | |
| 294 | |
| 295 | if (unlikely(index == last_index)) |
| 296 | lblock = end & mask; |
| 297 | else |
| 298 | lblock = blks_per_page; |
| 299 | |
| 300 | do { |
| 301 | if (j >= lblock) |
| 302 | break; |
| 303 | pos = (i - beg) + j; |
| 304 | |
| 305 | if (!buffer_mapped(bh)) |
| 306 | map_bh(bh, inode->i_sb, oldb + pos); |
| 307 | if (!buffer_uptodate(bh)) { |
| 308 | ll_rw_block(READ, 1, &bh); |
| 309 | wait_on_buffer(bh); |
| 310 | if (!buffer_uptodate(bh)) { |
| 311 | ufs_error(inode->i_sb, __func__, |
| 312 | "read of block failed\n"); |
| 313 | break; |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | UFSD(" change from %llu to %llu, pos %u\n", |
| 318 | (unsigned long long)(pos + oldb), |
| 319 | (unsigned long long)(pos + newb), pos); |
| 320 | |
| 321 | bh->b_blocknr = newb + pos; |
| 322 | unmap_underlying_metadata(bh->b_bdev, |
| 323 | bh->b_blocknr); |
| 324 | mark_buffer_dirty(bh); |
| 325 | ++j; |
| 326 | bh = bh->b_this_page; |
| 327 | } while (bh != head); |
| 328 | |
| 329 | if (likely(cur_index != index)) |
| 330 | ufs_put_locked_page(page); |
| 331 | } |
| 332 | UFSD("EXIT\n"); |
| 333 | } |
| 334 | |
| 335 | static void ufs_clear_frags(struct inode *inode, sector_t beg, unsigned int n, |
| 336 | int sync) |
| 337 | { |
| 338 | struct buffer_head *bh; |
| 339 | sector_t end = beg + n; |
| 340 | |
| 341 | for (; beg < end; ++beg) { |
| 342 | bh = sb_getblk(inode->i_sb, beg); |
| 343 | lock_buffer(bh); |
| 344 | memset(bh->b_data, 0, inode->i_sb->s_blocksize); |
| 345 | set_buffer_uptodate(bh); |
| 346 | mark_buffer_dirty(bh); |
| 347 | unlock_buffer(bh); |
| 348 | if (IS_SYNC(inode) || sync) |
| 349 | sync_dirty_buffer(bh); |
| 350 | brelse(bh); |
| 351 | } |
| 352 | } |
| 353 | |
| 354 | u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, |
| 355 | u64 goal, unsigned count, int *err, |
| 356 | struct page *locked_page) |
| 357 | { |
| 358 | struct super_block * sb; |
| 359 | struct ufs_sb_private_info * uspi; |
| 360 | struct ufs_super_block_first * usb1; |
| 361 | unsigned cgno, oldcount, newcount; |
| 362 | u64 tmp, request, result; |
| 363 | |
| 364 | UFSD("ENTER, ino %lu, fragment %llu, goal %llu, count %u\n", |
| 365 | inode->i_ino, (unsigned long long)fragment, |
| 366 | (unsigned long long)goal, count); |
| 367 | |
| 368 | sb = inode->i_sb; |
| 369 | uspi = UFS_SB(sb)->s_uspi; |
| 370 | usb1 = ubh_get_usb_first(uspi); |
| 371 | *err = -ENOSPC; |
| 372 | |
| 373 | lock_super (sb); |
| 374 | tmp = ufs_data_ptr_to_cpu(sb, p); |
| 375 | |
| 376 | if (count + ufs_fragnum(fragment) > uspi->s_fpb) { |
| 377 | ufs_warning(sb, "ufs_new_fragments", "internal warning" |
| 378 | " fragment %llu, count %u", |
| 379 | (unsigned long long)fragment, count); |
| 380 | count = uspi->s_fpb - ufs_fragnum(fragment); |
| 381 | } |
| 382 | oldcount = ufs_fragnum (fragment); |
| 383 | newcount = oldcount + count; |
| 384 | |
| 385 | /* |
| 386 | * Somebody else has just allocated our fragments |
| 387 | */ |
| 388 | if (oldcount) { |
| 389 | if (!tmp) { |
| 390 | ufs_error(sb, "ufs_new_fragments", "internal error, " |
| 391 | "fragment %llu, tmp %llu\n", |
| 392 | (unsigned long long)fragment, |
| 393 | (unsigned long long)tmp); |
| 394 | unlock_super(sb); |
| 395 | return INVBLOCK; |
| 396 | } |
| 397 | if (fragment < UFS_I(inode)->i_lastfrag) { |
| 398 | UFSD("EXIT (ALREADY ALLOCATED)\n"); |
| 399 | unlock_super (sb); |
| 400 | return 0; |
| 401 | } |
| 402 | } |
| 403 | else { |
| 404 | if (tmp) { |
| 405 | UFSD("EXIT (ALREADY ALLOCATED)\n"); |
| 406 | unlock_super(sb); |
| 407 | return 0; |
| 408 | } |
| 409 | } |
| 410 | |
| 411 | /* |
| 412 | * There is not enough space for user on the device |
| 413 | */ |
| 414 | if (!capable(CAP_SYS_RESOURCE) && ufs_freespace(uspi, UFS_MINFREE) <= 0) { |
| 415 | unlock_super (sb); |
| 416 | UFSD("EXIT (FAILED)\n"); |
| 417 | return 0; |
| 418 | } |
| 419 | |
| 420 | if (goal >= uspi->s_size) |
| 421 | goal = 0; |
| 422 | if (goal == 0) |
| 423 | cgno = ufs_inotocg (inode->i_ino); |
| 424 | else |
| 425 | cgno = ufs_dtog(uspi, goal); |
| 426 | |
| 427 | /* |
| 428 | * allocate new fragment |
| 429 | */ |
| 430 | if (oldcount == 0) { |
| 431 | result = ufs_alloc_fragments (inode, cgno, goal, count, err); |
| 432 | if (result) { |
| 433 | ufs_cpu_to_data_ptr(sb, p, result); |
| 434 | *err = 0; |
| 435 | UFS_I(inode)->i_lastfrag = |
| 436 | max_t(u32, UFS_I(inode)->i_lastfrag, |
| 437 | fragment + count); |
| 438 | ufs_clear_frags(inode, result + oldcount, |
| 439 | newcount - oldcount, locked_page != NULL); |
| 440 | } |
| 441 | unlock_super(sb); |
| 442 | UFSD("EXIT, result %llu\n", (unsigned long long)result); |
| 443 | return result; |
| 444 | } |
| 445 | |
| 446 | /* |
| 447 | * resize block |
| 448 | */ |
| 449 | result = ufs_add_fragments (inode, tmp, oldcount, newcount, err); |
| 450 | if (result) { |
| 451 | *err = 0; |
| 452 | UFS_I(inode)->i_lastfrag = max_t(u32, UFS_I(inode)->i_lastfrag, fragment + count); |
| 453 | ufs_clear_frags(inode, result + oldcount, newcount - oldcount, |
| 454 | locked_page != NULL); |
| 455 | unlock_super(sb); |
| 456 | UFSD("EXIT, result %llu\n", (unsigned long long)result); |
| 457 | return result; |
| 458 | } |
| 459 | |
| 460 | /* |
| 461 | * allocate new block and move data |
| 462 | */ |
| 463 | switch (fs32_to_cpu(sb, usb1->fs_optim)) { |
| 464 | case UFS_OPTSPACE: |
| 465 | request = newcount; |
| 466 | if (uspi->s_minfree < 5 || uspi->cs_total.cs_nffree |
| 467 | > uspi->s_dsize * uspi->s_minfree / (2 * 100)) |
| 468 | break; |
| 469 | usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTTIME); |
| 470 | break; |
| 471 | default: |
| 472 | usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTTIME); |
| 473 | |
| 474 | case UFS_OPTTIME: |
| 475 | request = uspi->s_fpb; |
| 476 | if (uspi->cs_total.cs_nffree < uspi->s_dsize * |
| 477 | (uspi->s_minfree - 2) / 100) |
| 478 | break; |
| 479 | usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTTIME); |
| 480 | break; |
| 481 | } |
| 482 | result = ufs_alloc_fragments (inode, cgno, goal, request, err); |
| 483 | if (result) { |
| 484 | ufs_clear_frags(inode, result + oldcount, newcount - oldcount, |
| 485 | locked_page != NULL); |
| 486 | ufs_change_blocknr(inode, fragment - oldcount, oldcount, |
| 487 | uspi->s_sbbase + tmp, |
| 488 | uspi->s_sbbase + result, locked_page); |
| 489 | ufs_cpu_to_data_ptr(sb, p, result); |
| 490 | *err = 0; |
| 491 | UFS_I(inode)->i_lastfrag = max_t(u32, UFS_I(inode)->i_lastfrag, fragment + count); |
| 492 | unlock_super(sb); |
| 493 | if (newcount < request) |
| 494 | ufs_free_fragments (inode, result + newcount, request - newcount); |
| 495 | ufs_free_fragments (inode, tmp, oldcount); |
| 496 | UFSD("EXIT, result %llu\n", (unsigned long long)result); |
| 497 | return result; |
| 498 | } |
| 499 | |
| 500 | unlock_super(sb); |
| 501 | UFSD("EXIT (FAILED)\n"); |
| 502 | return 0; |
| 503 | } |
| 504 | |
| 505 | static u64 ufs_add_fragments(struct inode *inode, u64 fragment, |
| 506 | unsigned oldcount, unsigned newcount, int *err) |
| 507 | { |
| 508 | struct super_block * sb; |
| 509 | struct ufs_sb_private_info * uspi; |
| 510 | struct ufs_super_block_first * usb1; |
| 511 | struct ufs_cg_private_info * ucpi; |
| 512 | struct ufs_cylinder_group * ucg; |
| 513 | unsigned cgno, fragno, fragoff, count, fragsize, i; |
| 514 | |
| 515 | UFSD("ENTER, fragment %llu, oldcount %u, newcount %u\n", |
| 516 | (unsigned long long)fragment, oldcount, newcount); |
| 517 | |
| 518 | sb = inode->i_sb; |
| 519 | uspi = UFS_SB(sb)->s_uspi; |
| 520 | usb1 = ubh_get_usb_first (uspi); |
| 521 | count = newcount - oldcount; |
| 522 | |
| 523 | cgno = ufs_dtog(uspi, fragment); |
| 524 | if (fs32_to_cpu(sb, UFS_SB(sb)->fs_cs(cgno).cs_nffree) < count) |
| 525 | return 0; |
| 526 | if ((ufs_fragnum (fragment) + newcount) > uspi->s_fpb) |
| 527 | return 0; |
| 528 | ucpi = ufs_load_cylinder (sb, cgno); |
| 529 | if (!ucpi) |
| 530 | return 0; |
| 531 | ucg = ubh_get_ucg (UCPI_UBH(ucpi)); |
| 532 | if (!ufs_cg_chkmagic(sb, ucg)) { |
| 533 | ufs_panic (sb, "ufs_add_fragments", |
| 534 | "internal error, bad magic number on cg %u", cgno); |
| 535 | return 0; |
| 536 | } |
| 537 | |
| 538 | fragno = ufs_dtogd(uspi, fragment); |
| 539 | fragoff = ufs_fragnum (fragno); |
| 540 | for (i = oldcount; i < newcount; i++) |
| 541 | if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_freeoff, fragno + i)) |
| 542 | return 0; |
| 543 | /* |
| 544 | * Block can be extended |
| 545 | */ |
| 546 | ucg->cg_time = cpu_to_fs32(sb, get_seconds()); |
| 547 | for (i = newcount; i < (uspi->s_fpb - fragoff); i++) |
| 548 | if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_freeoff, fragno + i)) |
| 549 | break; |
| 550 | fragsize = i - oldcount; |
| 551 | if (!fs32_to_cpu(sb, ucg->cg_frsum[fragsize])) |
| 552 | ufs_panic (sb, "ufs_add_fragments", |
| 553 | "internal error or corrupted bitmap on cg %u", cgno); |
| 554 | fs32_sub(sb, &ucg->cg_frsum[fragsize], 1); |
| 555 | if (fragsize != count) |
| 556 | fs32_add(sb, &ucg->cg_frsum[fragsize - count], 1); |
| 557 | for (i = oldcount; i < newcount; i++) |
| 558 | ubh_clrbit (UCPI_UBH(ucpi), ucpi->c_freeoff, fragno + i); |
| 559 | if (vfs_dq_alloc_block(inode, count)) { |
| 560 | *err = -EDQUOT; |
| 561 | return 0; |
| 562 | } |
| 563 | |
| 564 | fs32_sub(sb, &ucg->cg_cs.cs_nffree, count); |
| 565 | fs32_sub(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, count); |
| 566 | uspi->cs_total.cs_nffree -= count; |
| 567 | |
| 568 | ubh_mark_buffer_dirty (USPI_UBH(uspi)); |
| 569 | ubh_mark_buffer_dirty (UCPI_UBH(ucpi)); |
| 570 | if (sb->s_flags & MS_SYNCHRONOUS) { |
| 571 | ubh_ll_rw_block(SWRITE, UCPI_UBH(ucpi)); |
| 572 | ubh_wait_on_buffer (UCPI_UBH(ucpi)); |
| 573 | } |
| 574 | sb->s_dirt = 1; |
| 575 | |
| 576 | UFSD("EXIT, fragment %llu\n", (unsigned long long)fragment); |
| 577 | |
| 578 | return fragment; |
| 579 | } |
| 580 | |
| 581 | #define UFS_TEST_FREE_SPACE_CG \ |
| 582 | ucg = (struct ufs_cylinder_group *) UFS_SB(sb)->s_ucg[cgno]->b_data; \ |
| 583 | if (fs32_to_cpu(sb, ucg->cg_cs.cs_nbfree)) \ |
| 584 | goto cg_found; \ |
| 585 | for (k = count; k < uspi->s_fpb; k++) \ |
| 586 | if (fs32_to_cpu(sb, ucg->cg_frsum[k])) \ |
| 587 | goto cg_found; |
| 588 | |
| 589 | static u64 ufs_alloc_fragments(struct inode *inode, unsigned cgno, |
| 590 | u64 goal, unsigned count, int *err) |
| 591 | { |
| 592 | struct super_block * sb; |
| 593 | struct ufs_sb_private_info * uspi; |
| 594 | struct ufs_super_block_first * usb1; |
| 595 | struct ufs_cg_private_info * ucpi; |
| 596 | struct ufs_cylinder_group * ucg; |
| 597 | unsigned oldcg, i, j, k, allocsize; |
| 598 | u64 result; |
| 599 | |
| 600 | UFSD("ENTER, ino %lu, cgno %u, goal %llu, count %u\n", |
| 601 | inode->i_ino, cgno, (unsigned long long)goal, count); |
| 602 | |
| 603 | sb = inode->i_sb; |
| 604 | uspi = UFS_SB(sb)->s_uspi; |
| 605 | usb1 = ubh_get_usb_first(uspi); |
| 606 | oldcg = cgno; |
| 607 | |
| 608 | /* |
| 609 | * 1. searching on preferred cylinder group |
| 610 | */ |
| 611 | UFS_TEST_FREE_SPACE_CG |
| 612 | |
| 613 | /* |
| 614 | * 2. quadratic rehash |
| 615 | */ |
| 616 | for (j = 1; j < uspi->s_ncg; j *= 2) { |
| 617 | cgno += j; |
| 618 | if (cgno >= uspi->s_ncg) |
| 619 | cgno -= uspi->s_ncg; |
| 620 | UFS_TEST_FREE_SPACE_CG |
| 621 | } |
| 622 | |
| 623 | /* |
| 624 | * 3. brute force search |
| 625 | * We start at i = 2 ( 0 is checked at 1.step, 1 at 2.step ) |
| 626 | */ |
| 627 | cgno = (oldcg + 1) % uspi->s_ncg; |
| 628 | for (j = 2; j < uspi->s_ncg; j++) { |
| 629 | cgno++; |
| 630 | if (cgno >= uspi->s_ncg) |
| 631 | cgno = 0; |
| 632 | UFS_TEST_FREE_SPACE_CG |
| 633 | } |
| 634 | |
| 635 | UFSD("EXIT (FAILED)\n"); |
| 636 | return 0; |
| 637 | |
| 638 | cg_found: |
| 639 | ucpi = ufs_load_cylinder (sb, cgno); |
| 640 | if (!ucpi) |
| 641 | return 0; |
| 642 | ucg = ubh_get_ucg (UCPI_UBH(ucpi)); |
| 643 | if (!ufs_cg_chkmagic(sb, ucg)) |
| 644 | ufs_panic (sb, "ufs_alloc_fragments", |
| 645 | "internal error, bad magic number on cg %u", cgno); |
| 646 | ucg->cg_time = cpu_to_fs32(sb, get_seconds()); |
| 647 | |
| 648 | if (count == uspi->s_fpb) { |
| 649 | result = ufs_alloccg_block (inode, ucpi, goal, err); |
| 650 | if (result == INVBLOCK) |
| 651 | return 0; |
| 652 | goto succed; |
| 653 | } |
| 654 | |
| 655 | for (allocsize = count; allocsize < uspi->s_fpb; allocsize++) |
| 656 | if (fs32_to_cpu(sb, ucg->cg_frsum[allocsize]) != 0) |
| 657 | break; |
| 658 | |
| 659 | if (allocsize == uspi->s_fpb) { |
| 660 | result = ufs_alloccg_block (inode, ucpi, goal, err); |
| 661 | if (result == INVBLOCK) |
| 662 | return 0; |
| 663 | goal = ufs_dtogd(uspi, result); |
| 664 | for (i = count; i < uspi->s_fpb; i++) |
| 665 | ubh_setbit (UCPI_UBH(ucpi), ucpi->c_freeoff, goal + i); |
| 666 | i = uspi->s_fpb - count; |
| 667 | vfs_dq_free_block(inode, i); |
| 668 | |
| 669 | fs32_add(sb, &ucg->cg_cs.cs_nffree, i); |
| 670 | uspi->cs_total.cs_nffree += i; |
| 671 | fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, i); |
| 672 | fs32_add(sb, &ucg->cg_frsum[i], 1); |
| 673 | goto succed; |
| 674 | } |
| 675 | |
| 676 | result = ufs_bitmap_search (sb, ucpi, goal, allocsize); |
| 677 | if (result == INVBLOCK) |
| 678 | return 0; |
| 679 | if (vfs_dq_alloc_block(inode, count)) { |
| 680 | *err = -EDQUOT; |
| 681 | return 0; |
| 682 | } |
| 683 | for (i = 0; i < count; i++) |
| 684 | ubh_clrbit (UCPI_UBH(ucpi), ucpi->c_freeoff, result + i); |
| 685 | |
| 686 | fs32_sub(sb, &ucg->cg_cs.cs_nffree, count); |
| 687 | uspi->cs_total.cs_nffree -= count; |
| 688 | fs32_sub(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, count); |
| 689 | fs32_sub(sb, &ucg->cg_frsum[allocsize], 1); |
| 690 | |
| 691 | if (count != allocsize) |
| 692 | fs32_add(sb, &ucg->cg_frsum[allocsize - count], 1); |
| 693 | |
| 694 | succed: |
| 695 | ubh_mark_buffer_dirty (USPI_UBH(uspi)); |
| 696 | ubh_mark_buffer_dirty (UCPI_UBH(ucpi)); |
| 697 | if (sb->s_flags & MS_SYNCHRONOUS) { |
| 698 | ubh_ll_rw_block(SWRITE, UCPI_UBH(ucpi)); |
| 699 | ubh_wait_on_buffer (UCPI_UBH(ucpi)); |
| 700 | } |
| 701 | sb->s_dirt = 1; |
| 702 | |
| 703 | result += cgno * uspi->s_fpg; |
| 704 | UFSD("EXIT3, result %llu\n", (unsigned long long)result); |
| 705 | return result; |
| 706 | } |
| 707 | |
| 708 | static u64 ufs_alloccg_block(struct inode *inode, |
| 709 | struct ufs_cg_private_info *ucpi, |
| 710 | u64 goal, int *err) |
| 711 | { |
| 712 | struct super_block * sb; |
| 713 | struct ufs_sb_private_info * uspi; |
| 714 | struct ufs_super_block_first * usb1; |
| 715 | struct ufs_cylinder_group * ucg; |
| 716 | u64 result, blkno; |
| 717 | |
| 718 | UFSD("ENTER, goal %llu\n", (unsigned long long)goal); |
| 719 | |
| 720 | sb = inode->i_sb; |
| 721 | uspi = UFS_SB(sb)->s_uspi; |
| 722 | usb1 = ubh_get_usb_first(uspi); |
| 723 | ucg = ubh_get_ucg(UCPI_UBH(ucpi)); |
| 724 | |
| 725 | if (goal == 0) { |
| 726 | goal = ucpi->c_rotor; |
| 727 | goto norot; |
| 728 | } |
| 729 | goal = ufs_blknum (goal); |
| 730 | goal = ufs_dtogd(uspi, goal); |
| 731 | |
| 732 | /* |
| 733 | * If the requested block is available, use it. |
| 734 | */ |
| 735 | if (ubh_isblockset(UCPI_UBH(ucpi), ucpi->c_freeoff, ufs_fragstoblks(goal))) { |
| 736 | result = goal; |
| 737 | goto gotit; |
| 738 | } |
| 739 | |
| 740 | norot: |
| 741 | result = ufs_bitmap_search (sb, ucpi, goal, uspi->s_fpb); |
| 742 | if (result == INVBLOCK) |
| 743 | return INVBLOCK; |
| 744 | ucpi->c_rotor = result; |
| 745 | gotit: |
| 746 | blkno = ufs_fragstoblks(result); |
| 747 | ubh_clrblock (UCPI_UBH(ucpi), ucpi->c_freeoff, blkno); |
| 748 | if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD) |
| 749 | ufs_clusteracct (sb, ucpi, blkno, -1); |
| 750 | if (vfs_dq_alloc_block(inode, uspi->s_fpb)) { |
| 751 | *err = -EDQUOT; |
| 752 | return INVBLOCK; |
| 753 | } |
| 754 | |
| 755 | fs32_sub(sb, &ucg->cg_cs.cs_nbfree, 1); |
| 756 | uspi->cs_total.cs_nbfree--; |
| 757 | fs32_sub(sb, &UFS_SB(sb)->fs_cs(ucpi->c_cgx).cs_nbfree, 1); |
| 758 | |
| 759 | if (uspi->fs_magic != UFS2_MAGIC) { |
| 760 | unsigned cylno = ufs_cbtocylno((unsigned)result); |
| 761 | |
| 762 | fs16_sub(sb, &ubh_cg_blks(ucpi, cylno, |
| 763 | ufs_cbtorpos((unsigned)result)), 1); |
| 764 | fs32_sub(sb, &ubh_cg_blktot(ucpi, cylno), 1); |
| 765 | } |
| 766 | |
| 767 | UFSD("EXIT, result %llu\n", (unsigned long long)result); |
| 768 | |
| 769 | return result; |
| 770 | } |
| 771 | |
| 772 | static unsigned ubh_scanc(struct ufs_sb_private_info *uspi, |
| 773 | struct ufs_buffer_head *ubh, |
| 774 | unsigned begin, unsigned size, |
| 775 | unsigned char *table, unsigned char mask) |
| 776 | { |
| 777 | unsigned rest, offset; |
| 778 | unsigned char *cp; |
| 779 | |
| 780 | |
| 781 | offset = begin & ~uspi->s_fmask; |
| 782 | begin >>= uspi->s_fshift; |
| 783 | for (;;) { |
| 784 | if ((offset + size) < uspi->s_fsize) |
| 785 | rest = size; |
| 786 | else |
| 787 | rest = uspi->s_fsize - offset; |
| 788 | size -= rest; |
| 789 | cp = ubh->bh[begin]->b_data + offset; |
| 790 | while ((table[*cp++] & mask) == 0 && --rest) |
| 791 | ; |
| 792 | if (rest || !size) |
| 793 | break; |
| 794 | begin++; |
| 795 | offset = 0; |
| 796 | } |
| 797 | return (size + rest); |
| 798 | } |
| 799 | |
| 800 | /* |
| 801 | * Find a block of the specified size in the specified cylinder group. |
| 802 | * @sp: pointer to super block |
| 803 | * @ucpi: pointer to cylinder group info |
| 804 | * @goal: near which block we want find new one |
| 805 | * @count: specified size |
| 806 | */ |
| 807 | static u64 ufs_bitmap_search(struct super_block *sb, |
| 808 | struct ufs_cg_private_info *ucpi, |
| 809 | u64 goal, unsigned count) |
| 810 | { |
| 811 | /* |
| 812 | * Bit patterns for identifying fragments in the block map |
| 813 | * used as ((map & mask_arr) == want_arr) |
| 814 | */ |
| 815 | static const int mask_arr[9] = { |
| 816 | 0x3, 0x7, 0xf, 0x1f, 0x3f, 0x7f, 0xff, 0x1ff, 0x3ff |
| 817 | }; |
| 818 | static const int want_arr[9] = { |
| 819 | 0x0, 0x2, 0x6, 0xe, 0x1e, 0x3e, 0x7e, 0xfe, 0x1fe |
| 820 | }; |
| 821 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
| 822 | struct ufs_super_block_first *usb1; |
| 823 | struct ufs_cylinder_group *ucg; |
| 824 | unsigned start, length, loc; |
| 825 | unsigned pos, want, blockmap, mask, end; |
| 826 | u64 result; |
| 827 | |
| 828 | UFSD("ENTER, cg %u, goal %llu, count %u\n", ucpi->c_cgx, |
| 829 | (unsigned long long)goal, count); |
| 830 | |
| 831 | usb1 = ubh_get_usb_first (uspi); |
| 832 | ucg = ubh_get_ucg(UCPI_UBH(ucpi)); |
| 833 | |
| 834 | if (goal) |
| 835 | start = ufs_dtogd(uspi, goal) >> 3; |
| 836 | else |
| 837 | start = ucpi->c_frotor >> 3; |
| 838 | |
| 839 | length = ((uspi->s_fpg + 7) >> 3) - start; |
| 840 | loc = ubh_scanc(uspi, UCPI_UBH(ucpi), ucpi->c_freeoff + start, length, |
| 841 | (uspi->s_fpb == 8) ? ufs_fragtable_8fpb : ufs_fragtable_other, |
| 842 | 1 << (count - 1 + (uspi->s_fpb & 7))); |
| 843 | if (loc == 0) { |
| 844 | length = start + 1; |
| 845 | loc = ubh_scanc(uspi, UCPI_UBH(ucpi), ucpi->c_freeoff, length, |
| 846 | (uspi->s_fpb == 8) ? ufs_fragtable_8fpb : |
| 847 | ufs_fragtable_other, |
| 848 | 1 << (count - 1 + (uspi->s_fpb & 7))); |
| 849 | if (loc == 0) { |
| 850 | ufs_error(sb, "ufs_bitmap_search", |
| 851 | "bitmap corrupted on cg %u, start %u," |
| 852 | " length %u, count %u, freeoff %u\n", |
| 853 | ucpi->c_cgx, start, length, count, |
| 854 | ucpi->c_freeoff); |
| 855 | return INVBLOCK; |
| 856 | } |
| 857 | start = 0; |
| 858 | } |
| 859 | result = (start + length - loc) << 3; |
| 860 | ucpi->c_frotor = result; |
| 861 | |
| 862 | /* |
| 863 | * found the byte in the map |
| 864 | */ |
| 865 | |
| 866 | for (end = result + 8; result < end; result += uspi->s_fpb) { |
| 867 | blockmap = ubh_blkmap(UCPI_UBH(ucpi), ucpi->c_freeoff, result); |
| 868 | blockmap <<= 1; |
| 869 | mask = mask_arr[count]; |
| 870 | want = want_arr[count]; |
| 871 | for (pos = 0; pos <= uspi->s_fpb - count; pos++) { |
| 872 | if ((blockmap & mask) == want) { |
| 873 | UFSD("EXIT, result %llu\n", |
| 874 | (unsigned long long)result); |
| 875 | return result + pos; |
| 876 | } |
| 877 | mask <<= 1; |
| 878 | want <<= 1; |
| 879 | } |
| 880 | } |
| 881 | |
| 882 | ufs_error(sb, "ufs_bitmap_search", "block not in map on cg %u\n", |
| 883 | ucpi->c_cgx); |
| 884 | UFSD("EXIT (FAILED)\n"); |
| 885 | return INVBLOCK; |
| 886 | } |
| 887 | |
| 888 | static void ufs_clusteracct(struct super_block * sb, |
| 889 | struct ufs_cg_private_info * ucpi, unsigned blkno, int cnt) |
| 890 | { |
| 891 | struct ufs_sb_private_info * uspi; |
| 892 | int i, start, end, forw, back; |
| 893 | |
| 894 | uspi = UFS_SB(sb)->s_uspi; |
| 895 | if (uspi->s_contigsumsize <= 0) |
| 896 | return; |
| 897 | |
| 898 | if (cnt > 0) |
| 899 | ubh_setbit(UCPI_UBH(ucpi), ucpi->c_clusteroff, blkno); |
| 900 | else |
| 901 | ubh_clrbit(UCPI_UBH(ucpi), ucpi->c_clusteroff, blkno); |
| 902 | |
| 903 | /* |
| 904 | * Find the size of the cluster going forward. |
| 905 | */ |
| 906 | start = blkno + 1; |
| 907 | end = start + uspi->s_contigsumsize; |
| 908 | if ( end >= ucpi->c_nclusterblks) |
| 909 | end = ucpi->c_nclusterblks; |
| 910 | i = ubh_find_next_zero_bit (UCPI_UBH(ucpi), ucpi->c_clusteroff, end, start); |
| 911 | if (i > end) |
| 912 | i = end; |
| 913 | forw = i - start; |
| 914 | |
| 915 | /* |
| 916 | * Find the size of the cluster going backward. |
| 917 | */ |
| 918 | start = blkno - 1; |
| 919 | end = start - uspi->s_contigsumsize; |
| 920 | if (end < 0 ) |
| 921 | end = -1; |
| 922 | i = ubh_find_last_zero_bit (UCPI_UBH(ucpi), ucpi->c_clusteroff, start, end); |
| 923 | if ( i < end) |
| 924 | i = end; |
| 925 | back = start - i; |
| 926 | |
| 927 | /* |
| 928 | * Account for old cluster and the possibly new forward and |
| 929 | * back clusters. |
| 930 | */ |
| 931 | i = back + forw + 1; |
| 932 | if (i > uspi->s_contigsumsize) |
| 933 | i = uspi->s_contigsumsize; |
| 934 | fs32_add(sb, (__fs32*)ubh_get_addr(UCPI_UBH(ucpi), ucpi->c_clustersumoff + (i << 2)), cnt); |
| 935 | if (back > 0) |
| 936 | fs32_sub(sb, (__fs32*)ubh_get_addr(UCPI_UBH(ucpi), ucpi->c_clustersumoff + (back << 2)), cnt); |
| 937 | if (forw > 0) |
| 938 | fs32_sub(sb, (__fs32*)ubh_get_addr(UCPI_UBH(ucpi), ucpi->c_clustersumoff + (forw << 2)), cnt); |
| 939 | } |
| 940 | |
| 941 | |
| 942 | static unsigned char ufs_fragtable_8fpb[] = { |
| 943 | 0x00, 0x01, 0x01, 0x02, 0x01, 0x01, 0x02, 0x04, 0x01, 0x01, 0x01, 0x03, 0x02, 0x03, 0x04, 0x08, |
| 944 | 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x03, 0x05, 0x02, 0x03, 0x03, 0x02, 0x04, 0x05, 0x08, 0x10, |
| 945 | 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x03, 0x05, 0x01, 0x01, 0x01, 0x03, 0x03, 0x03, 0x05, 0x09, |
| 946 | 0x02, 0x03, 0x03, 0x02, 0x03, 0x03, 0x02, 0x06, 0x04, 0x05, 0x05, 0x06, 0x08, 0x09, 0x10, 0x20, |
| 947 | 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x03, 0x05, 0x01, 0x01, 0x01, 0x03, 0x03, 0x03, 0x05, 0x09, |
| 948 | 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x03, 0x05, 0x03, 0x03, 0x03, 0x03, 0x05, 0x05, 0x09, 0x11, |
| 949 | 0x02, 0x03, 0x03, 0x02, 0x03, 0x03, 0x02, 0x06, 0x03, 0x03, 0x03, 0x03, 0x02, 0x03, 0x06, 0x0A, |
| 950 | 0x04, 0x05, 0x05, 0x06, 0x05, 0x05, 0x06, 0x04, 0x08, 0x09, 0x09, 0x0A, 0x10, 0x11, 0x20, 0x40, |
| 951 | 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x03, 0x05, 0x01, 0x01, 0x01, 0x03, 0x03, 0x03, 0x05, 0x09, |
| 952 | 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x03, 0x05, 0x03, 0x03, 0x03, 0x03, 0x05, 0x05, 0x09, 0x11, |
| 953 | 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x03, 0x05, 0x01, 0x01, 0x01, 0x03, 0x03, 0x03, 0x05, 0x09, |
| 954 | 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x07, 0x05, 0x05, 0x05, 0x07, 0x09, 0x09, 0x11, 0x21, |
| 955 | 0x02, 0x03, 0x03, 0x02, 0x03, 0x03, 0x02, 0x06, 0x03, 0x03, 0x03, 0x03, 0x02, 0x03, 0x06, 0x0A, |
| 956 | 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x07, 0x02, 0x03, 0x03, 0x02, 0x06, 0x07, 0x0A, 0x12, |
| 957 | 0x04, 0x05, 0x05, 0x06, 0x05, 0x05, 0x06, 0x04, 0x05, 0x05, 0x05, 0x07, 0x06, 0x07, 0x04, 0x0C, |
| 958 | 0x08, 0x09, 0x09, 0x0A, 0x09, 0x09, 0x0A, 0x0C, 0x10, 0x11, 0x11, 0x12, 0x20, 0x21, 0x40, 0x80, |
| 959 | }; |
| 960 | |
| 961 | static unsigned char ufs_fragtable_other[] = { |
| 962 | 0x00, 0x16, 0x16, 0x2A, 0x16, 0x16, 0x26, 0x4E, 0x16, 0x16, 0x16, 0x3E, 0x2A, 0x3E, 0x4E, 0x8A, |
| 963 | 0x16, 0x16, 0x16, 0x3E, 0x16, 0x16, 0x36, 0x5E, 0x16, 0x16, 0x16, 0x3E, 0x3E, 0x3E, 0x5E, 0x9E, |
| 964 | 0x16, 0x16, 0x16, 0x3E, 0x16, 0x16, 0x36, 0x5E, 0x16, 0x16, 0x16, 0x3E, 0x3E, 0x3E, 0x5E, 0x9E, |
| 965 | 0x2A, 0x3E, 0x3E, 0x2A, 0x3E, 0x3E, 0x2E, 0x6E, 0x3E, 0x3E, 0x3E, 0x3E, 0x2A, 0x3E, 0x6E, 0xAA, |
| 966 | 0x16, 0x16, 0x16, 0x3E, 0x16, 0x16, 0x36, 0x5E, 0x16, 0x16, 0x16, 0x3E, 0x3E, 0x3E, 0x5E, 0x9E, |
| 967 | 0x16, 0x16, 0x16, 0x3E, 0x16, 0x16, 0x36, 0x5E, 0x16, 0x16, 0x16, 0x3E, 0x3E, 0x3E, 0x5E, 0x9E, |
| 968 | 0x26, 0x36, 0x36, 0x2E, 0x36, 0x36, 0x26, 0x6E, 0x36, 0x36, 0x36, 0x3E, 0x2E, 0x3E, 0x6E, 0xAE, |
| 969 | 0x4E, 0x5E, 0x5E, 0x6E, 0x5E, 0x5E, 0x6E, 0x4E, 0x5E, 0x5E, 0x5E, 0x7E, 0x6E, 0x7E, 0x4E, 0xCE, |
| 970 | 0x16, 0x16, 0x16, 0x3E, 0x16, 0x16, 0x36, 0x5E, 0x16, 0x16, 0x16, 0x3E, 0x3E, 0x3E, 0x5E, 0x9E, |
| 971 | 0x16, 0x16, 0x16, 0x3E, 0x16, 0x16, 0x36, 0x5E, 0x16, 0x16, 0x16, 0x3E, 0x3E, 0x3E, 0x5E, 0x9E, |
| 972 | 0x16, 0x16, 0x16, 0x3E, 0x16, 0x16, 0x36, 0x5E, 0x16, 0x16, 0x16, 0x3E, 0x3E, 0x3E, 0x5E, 0x9E, |
| 973 | 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x7E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x7E, 0xBE, |
| 974 | 0x2A, 0x3E, 0x3E, 0x2A, 0x3E, 0x3E, 0x2E, 0x6E, 0x3E, 0x3E, 0x3E, 0x3E, 0x2A, 0x3E, 0x6E, 0xAA, |
| 975 | 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x7E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x7E, 0xBE, |
| 976 | 0x4E, 0x5E, 0x5E, 0x6E, 0x5E, 0x5E, 0x6E, 0x4E, 0x5E, 0x5E, 0x5E, 0x7E, 0x6E, 0x7E, 0x4E, 0xCE, |
| 977 | 0x8A, 0x9E, 0x9E, 0xAA, 0x9E, 0x9E, 0xAE, 0xCE, 0x9E, 0x9E, 0x9E, 0xBE, 0xAA, 0xBE, 0xCE, 0x8A, |
| 978 | }; |