1 /* 2 * linux/fs/ufs/inode.c 3 * 4 * Copyright (C) 1998 5 * Daniel Pirkl <daniel.pirkl@email.cz> 6 * Charles University, Faculty of Mathematics and Physics 7 * 8 * from 9 * 10 * linux/fs/ext2/inode.c 11 * 12 * Copyright (C) 1992, 1993, 1994, 1995 13 * Remy Card (card@masi.ibp.fr) 14 * Laboratoire MASI - Institut Blaise Pascal 15 * Universite Pierre et Marie Curie (Paris VI) 16 * 17 * from 18 * 19 * linux/fs/minix/inode.c 20 * 21 * Copyright (C) 1991, 1992 Linus Torvalds 22 * 23 * Goal-directed block allocation by Stephen Tweedie (sct@dcs.ed.ac.uk), 1993 24 * Big-endian to little-endian byte-swapping/bitmaps by 25 * David S. Miller (davem@caip.rutgers.edu), 1995 26 */ 27 28 #include <asm/uaccess.h> 29 #include <asm/system.h> 30 31 #include <linux/errno.h> 32 #include <linux/fs.h> 33 #include <linux/ufs_fs.h> 34 #include <linux/time.h> 35 #include <linux/stat.h> 36 #include <linux/string.h> 37 #include <linux/mm.h> 38 #include <linux/smp_lock.h> 39 #include <linux/buffer_head.h> 40 41 #include "swab.h" 42 #include "util.h" 43 44 static u64 ufs_frag_map(struct inode *inode, sector_t frag); 45 46 static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t offsets[4]) 47 { 48 struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi; 49 int ptrs = uspi->s_apb; 50 int ptrs_bits = uspi->s_apbshift; 51 const long direct_blocks = UFS_NDADDR, 52 indirect_blocks = ptrs, 53 double_blocks = (1 << (ptrs_bits * 2)); 54 int n = 0; 55 56 57 UFSD("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks); 58 if (i_block < 0) { 59 ufs_warning(inode->i_sb, "ufs_block_to_path", "block < 0"); 60 } else if (i_block < direct_blocks) { 61 offsets[n++] = i_block; 62 } else if ((i_block -= direct_blocks) < indirect_blocks) { 63 offsets[n++] = UFS_IND_BLOCK; 64 offsets[n++] = i_block; 65 } else if ((i_block -= indirect_blocks) < double_blocks) { 66 offsets[n++] = UFS_DIND_BLOCK; 67 offsets[n++] = i_block >> ptrs_bits; 68 offsets[n++] = i_block & (ptrs - 1); 69 } else if (((i_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) { 70 offsets[n++] = UFS_TIND_BLOCK; 71 offsets[n++] = i_block >> (ptrs_bits * 2); 72 offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1); 73 offsets[n++] = i_block & (ptrs - 1); 74 } else { 75 ufs_warning(inode->i_sb, "ufs_block_to_path", "block > big"); 76 } 77 return n; 78 } 79 80 /* 81 * Returns the location of the fragment from 82 * the begining of the filesystem. 83 */ 84 85 static u64 ufs_frag_map(struct inode *inode, sector_t frag) 86 { 87 struct ufs_inode_info *ufsi = UFS_I(inode); 88 struct super_block *sb = inode->i_sb; 89 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 90 u64 mask = (u64) uspi->s_apbmask>>uspi->s_fpbshift; 91 int shift = uspi->s_apbshift-uspi->s_fpbshift; 92 sector_t offsets[4], *p; 93 int depth = ufs_block_to_path(inode, frag >> uspi->s_fpbshift, offsets); 94 u64 ret = 0L; 95 __fs32 block; 96 __fs64 u2_block = 0L; 97 unsigned flags = UFS_SB(sb)->s_flags; 98 u64 temp = 0L; 99 100 UFSD(": frag = %llu depth = %d\n", (unsigned long long)frag, depth); 101 UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n",uspi->s_fpbshift,uspi->s_apbmask,mask); 102 103 if (depth == 0) 104 return 0; 105 106 p = offsets; 107 108 lock_kernel(); 109 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 110 goto ufs2; 111 112 block = ufsi->i_u1.i_data[*p++]; 113 if (!block) 114 goto out; 115 while (--depth) { 116 struct buffer_head *bh; 117 sector_t n = *p++; 118 119 bh = sb_bread(sb, uspi->s_sbbase + fs32_to_cpu(sb, block)+(n>>shift)); 120 if (!bh) 121 goto out; 122 block = ((__fs32 *) bh->b_data)[n & mask]; 123 brelse (bh); 124 if (!block) 125 goto out; 126 } 127 ret = (u64) (uspi->s_sbbase + fs32_to_cpu(sb, block) + (frag & uspi->s_fpbmask)); 128 goto out; 129 ufs2: 130 u2_block = ufsi->i_u1.u2_i_data[*p++]; 131 if (!u2_block) 132 goto out; 133 134 135 while (--depth) { 136 struct buffer_head *bh; 137 sector_t n = *p++; 138 139 140 temp = (u64)(uspi->s_sbbase) + fs64_to_cpu(sb, u2_block); 141 bh = sb_bread(sb, temp +(u64) (n>>shift)); 142 if (!bh) 143 goto out; 144 u2_block = ((__fs64 *)bh->b_data)[n & mask]; 145 brelse(bh); 146 if (!u2_block) 147 goto out; 148 } 149 temp = (u64)uspi->s_sbbase + fs64_to_cpu(sb, u2_block); 150 ret = temp + (u64) (frag & uspi->s_fpbmask); 151 152 out: 153 unlock_kernel(); 154 return ret; 155 } 156 157 static void ufs_clear_frag(struct inode *inode, struct buffer_head *bh) 158 { 159 lock_buffer(bh); 160 memset(bh->b_data, 0, inode->i_sb->s_blocksize); 161 set_buffer_uptodate(bh); 162 mark_buffer_dirty(bh); 163 unlock_buffer(bh); 164 if (IS_SYNC(inode)) 165 sync_dirty_buffer(bh); 166 } 167 168 static struct buffer_head * 169 ufs_clear_frags(struct inode *inode, sector_t beg, 170 unsigned int n) 171 { 172 struct buffer_head *res, *bh; 173 sector_t end = beg + n; 174 175 res = sb_getblk(inode->i_sb, beg); 176 ufs_clear_frag(inode, res); 177 for (++beg; beg < end; ++beg) { 178 bh = sb_getblk(inode->i_sb, beg); 179 ufs_clear_frag(inode, bh); 180 brelse(bh); 181 } 182 return res; 183 } 184 185 /** 186 * ufs_inode_getfrag() - allocate new fragment(s) 187 * @inode - pointer to inode 188 * @fragment - number of `fragment' which hold pointer 189 * to new allocated fragment(s) 190 * @new_fragment - number of new allocated fragment(s) 191 * @required - how many fragment(s) we require 192 * @err - we set it if something wrong 193 * @phys - pointer to where we save physical number of new allocated fragments, 194 * NULL if we allocate not data(indirect blocks for example). 195 * @new - we set it if we allocate new block 196 * @locked_page - for ufs_new_fragments() 197 */ 198 static struct buffer_head * 199 ufs_inode_getfrag(struct inode *inode, unsigned int fragment, 200 sector_t new_fragment, unsigned int required, int *err, 201 long *phys, int *new, struct page *locked_page) 202 { 203 struct ufs_inode_info *ufsi = UFS_I(inode); 204 struct super_block *sb = inode->i_sb; 205 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 206 struct buffer_head * result; 207 unsigned block, blockoff, lastfrag, lastblock, lastblockoff; 208 unsigned tmp, goal; 209 __fs32 * p, * p2; 210 211 UFSD("ENTER, ino %lu, fragment %u, new_fragment %llu, required %u, " 212 "metadata %d\n", inode->i_ino, fragment, 213 (unsigned long long)new_fragment, required, !phys); 214 215 /* TODO : to be done for write support 216 if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 217 goto ufs2; 218 */ 219 220 block = ufs_fragstoblks (fragment); 221 blockoff = ufs_fragnum (fragment); 222 p = ufsi->i_u1.i_data + block; 223 goal = 0; 224 225 repeat: 226 tmp = fs32_to_cpu(sb, *p); 227 lastfrag = ufsi->i_lastfrag; 228 if (tmp && fragment < lastfrag) { 229 if (!phys) { 230 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 231 if (tmp == fs32_to_cpu(sb, *p)) { 232 UFSD("EXIT, result %u\n", tmp + blockoff); 233 return result; 234 } 235 brelse (result); 236 goto repeat; 237 } else { 238 *phys = tmp + blockoff; 239 return NULL; 240 } 241 } 242 243 lastblock = ufs_fragstoblks (lastfrag); 244 lastblockoff = ufs_fragnum (lastfrag); 245 /* 246 * We will extend file into new block beyond last allocated block 247 */ 248 if (lastblock < block) { 249 /* 250 * We must reallocate last allocated block 251 */ 252 if (lastblockoff) { 253 p2 = ufsi->i_u1.i_data + lastblock; 254 tmp = ufs_new_fragments (inode, p2, lastfrag, 255 fs32_to_cpu(sb, *p2), uspi->s_fpb - lastblockoff, 256 err, locked_page); 257 if (!tmp) { 258 if (lastfrag != ufsi->i_lastfrag) 259 goto repeat; 260 else 261 return NULL; 262 } 263 lastfrag = ufsi->i_lastfrag; 264 265 } 266 goal = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock]) + uspi->s_fpb; 267 tmp = ufs_new_fragments (inode, p, fragment - blockoff, 268 goal, required + blockoff, 269 err, locked_page); 270 } 271 /* 272 * We will extend last allocated block 273 */ 274 else if (lastblock == block) { 275 tmp = ufs_new_fragments(inode, p, fragment - (blockoff - lastblockoff), 276 fs32_to_cpu(sb, *p), required + (blockoff - lastblockoff), 277 err, locked_page); 278 } 279 /* 280 * We will allocate new block before last allocated block 281 */ 282 else /* (lastblock > block) */ { 283 if (lastblock && (tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock-1]))) 284 goal = tmp + uspi->s_fpb; 285 tmp = ufs_new_fragments(inode, p, fragment - blockoff, 286 goal, uspi->s_fpb, err, locked_page); 287 } 288 if (!tmp) { 289 if ((!blockoff && *p) || 290 (blockoff && lastfrag != ufsi->i_lastfrag)) 291 goto repeat; 292 *err = -ENOSPC; 293 return NULL; 294 } 295 296 if (!phys) { 297 result = ufs_clear_frags(inode, tmp + blockoff, required); 298 } else { 299 *phys = tmp + blockoff; 300 result = NULL; 301 *err = 0; 302 *new = 1; 303 } 304 305 inode->i_ctime = CURRENT_TIME_SEC; 306 if (IS_SYNC(inode)) 307 ufs_sync_inode (inode); 308 mark_inode_dirty(inode); 309 UFSD("EXIT, result %u\n", tmp + blockoff); 310 return result; 311 312 /* This part : To be implemented .... 313 Required only for writing, not required for READ-ONLY. 314 ufs2: 315 316 u2_block = ufs_fragstoblks(fragment); 317 u2_blockoff = ufs_fragnum(fragment); 318 p = ufsi->i_u1.u2_i_data + block; 319 goal = 0; 320 321 repeat2: 322 tmp = fs32_to_cpu(sb, *p); 323 lastfrag = ufsi->i_lastfrag; 324 325 */ 326 } 327 328 /** 329 * ufs_inode_getblock() - allocate new block 330 * @inode - pointer to inode 331 * @bh - pointer to block which hold "pointer" to new allocated block 332 * @fragment - number of `fragment' which hold pointer 333 * to new allocated block 334 * @new_fragment - number of new allocated fragment 335 * (block will hold this fragment and also uspi->s_fpb-1) 336 * @err - see ufs_inode_getfrag() 337 * @phys - see ufs_inode_getfrag() 338 * @new - see ufs_inode_getfrag() 339 * @locked_page - see ufs_inode_getfrag() 340 */ 341 static struct buffer_head * 342 ufs_inode_getblock(struct inode *inode, struct buffer_head *bh, 343 unsigned int fragment, sector_t new_fragment, int *err, 344 long *phys, int *new, struct page *locked_page) 345 { 346 struct super_block *sb = inode->i_sb; 347 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 348 struct buffer_head * result; 349 unsigned tmp, goal, block, blockoff; 350 __fs32 * p; 351 352 block = ufs_fragstoblks (fragment); 353 blockoff = ufs_fragnum (fragment); 354 355 UFSD("ENTER, ino %lu, fragment %u, new_fragment %llu, metadata %d\n", 356 inode->i_ino, fragment, (unsigned long long)new_fragment, !phys); 357 358 result = NULL; 359 if (!bh) 360 goto out; 361 if (!buffer_uptodate(bh)) { 362 ll_rw_block (READ, 1, &bh); 363 wait_on_buffer (bh); 364 if (!buffer_uptodate(bh)) 365 goto out; 366 } 367 368 p = (__fs32 *) bh->b_data + block; 369 repeat: 370 tmp = fs32_to_cpu(sb, *p); 371 if (tmp) { 372 if (!phys) { 373 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 374 if (tmp == fs32_to_cpu(sb, *p)) 375 goto out; 376 brelse (result); 377 goto repeat; 378 } else { 379 *phys = tmp + blockoff; 380 goto out; 381 } 382 } 383 384 if (block && (tmp = fs32_to_cpu(sb, ((__fs32*)bh->b_data)[block-1]) + uspi->s_fpb)) 385 goal = tmp + uspi->s_fpb; 386 else 387 goal = bh->b_blocknr + uspi->s_fpb; 388 tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, 389 uspi->s_fpb, err, locked_page); 390 if (!tmp) { 391 if (fs32_to_cpu(sb, *p)) 392 goto repeat; 393 goto out; 394 } 395 396 397 if (!phys) { 398 result = ufs_clear_frags(inode, tmp + blockoff, uspi->s_fpb); 399 } else { 400 *phys = tmp + blockoff; 401 *new = 1; 402 } 403 404 mark_buffer_dirty(bh); 405 if (IS_SYNC(inode)) 406 sync_dirty_buffer(bh); 407 inode->i_ctime = CURRENT_TIME_SEC; 408 mark_inode_dirty(inode); 409 UFSD("result %u\n", tmp + blockoff); 410 out: 411 brelse (bh); 412 UFSD("EXIT\n"); 413 return result; 414 } 415 416 /** 417 * ufs_getfrag_bloc() - `get_block_t' function, interface between UFS and 418 * readpage, writepage and so on 419 */ 420 421 int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create) 422 { 423 struct super_block * sb = inode->i_sb; 424 struct ufs_sb_private_info * uspi = UFS_SB(sb)->s_uspi; 425 struct buffer_head * bh; 426 int ret, err, new; 427 unsigned long ptr,phys; 428 u64 phys64 = 0; 429 430 if (!create) { 431 phys64 = ufs_frag_map(inode, fragment); 432 UFSD("phys64 = %llu \n",phys64); 433 if (phys64) 434 map_bh(bh_result, sb, phys64); 435 return 0; 436 } 437 438 /* This code entered only while writing ....? */ 439 440 err = -EIO; 441 new = 0; 442 ret = 0; 443 bh = NULL; 444 445 lock_kernel(); 446 447 UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment); 448 if (fragment < 0) 449 goto abort_negative; 450 if (fragment > 451 ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb) 452 << uspi->s_fpbshift)) 453 goto abort_too_big; 454 455 err = 0; 456 ptr = fragment; 457 458 /* 459 * ok, these macros clean the logic up a bit and make 460 * it much more readable: 461 */ 462 #define GET_INODE_DATABLOCK(x) \ 463 ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new, bh_result->b_page) 464 #define GET_INODE_PTR(x) \ 465 ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL, bh_result->b_page) 466 #define GET_INDIRECT_DATABLOCK(x) \ 467 ufs_inode_getblock(inode, bh, x, fragment, \ 468 &err, &phys, &new, bh_result->b_page); 469 #define GET_INDIRECT_PTR(x) \ 470 ufs_inode_getblock(inode, bh, x, fragment, \ 471 &err, NULL, NULL, bh_result->b_page); 472 473 if (ptr < UFS_NDIR_FRAGMENT) { 474 bh = GET_INODE_DATABLOCK(ptr); 475 goto out; 476 } 477 ptr -= UFS_NDIR_FRAGMENT; 478 if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) { 479 bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift)); 480 goto get_indirect; 481 } 482 ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift); 483 if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) { 484 bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift)); 485 goto get_double; 486 } 487 ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift); 488 bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift)); 489 bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask); 490 get_double: 491 bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask); 492 get_indirect: 493 bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask); 494 495 #undef GET_INODE_DATABLOCK 496 #undef GET_INODE_PTR 497 #undef GET_INDIRECT_DATABLOCK 498 #undef GET_INDIRECT_PTR 499 500 out: 501 if (err) 502 goto abort; 503 if (new) 504 set_buffer_new(bh_result); 505 map_bh(bh_result, sb, phys); 506 abort: 507 unlock_kernel(); 508 return err; 509 510 abort_negative: 511 ufs_warning(sb, "ufs_get_block", "block < 0"); 512 goto abort; 513 514 abort_too_big: 515 ufs_warning(sb, "ufs_get_block", "block > big"); 516 goto abort; 517 } 518 519 static struct buffer_head *ufs_getfrag(struct inode *inode, 520 unsigned int fragment, 521 int create, int *err) 522 { 523 struct buffer_head dummy; 524 int error; 525 526 dummy.b_state = 0; 527 dummy.b_blocknr = -1000; 528 error = ufs_getfrag_block(inode, fragment, &dummy, create); 529 *err = error; 530 if (!error && buffer_mapped(&dummy)) { 531 struct buffer_head *bh; 532 bh = sb_getblk(inode->i_sb, dummy.b_blocknr); 533 if (buffer_new(&dummy)) { 534 memset(bh->b_data, 0, inode->i_sb->s_blocksize); 535 set_buffer_uptodate(bh); 536 mark_buffer_dirty(bh); 537 } 538 return bh; 539 } 540 return NULL; 541 } 542 543 struct buffer_head * ufs_bread (struct inode * inode, unsigned fragment, 544 int create, int * err) 545 { 546 struct buffer_head * bh; 547 548 UFSD("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment); 549 bh = ufs_getfrag (inode, fragment, create, err); 550 if (!bh || buffer_uptodate(bh)) 551 return bh; 552 ll_rw_block (READ, 1, &bh); 553 wait_on_buffer (bh); 554 if (buffer_uptodate(bh)) 555 return bh; 556 brelse (bh); 557 *err = -EIO; 558 return NULL; 559 } 560 561 static int ufs_writepage(struct page *page, struct writeback_control *wbc) 562 { 563 return block_write_full_page(page,ufs_getfrag_block,wbc); 564 } 565 static int ufs_readpage(struct file *file, struct page *page) 566 { 567 return block_read_full_page(page,ufs_getfrag_block); 568 } 569 static int ufs_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to) 570 { 571 return block_prepare_write(page,from,to,ufs_getfrag_block); 572 } 573 static sector_t ufs_bmap(struct address_space *mapping, sector_t block) 574 { 575 return generic_block_bmap(mapping,block,ufs_getfrag_block); 576 } 577 struct address_space_operations ufs_aops = { 578 .readpage = ufs_readpage, 579 .writepage = ufs_writepage, 580 .sync_page = block_sync_page, 581 .prepare_write = ufs_prepare_write, 582 .commit_write = generic_commit_write, 583 .bmap = ufs_bmap 584 }; 585 586 static void ufs_set_inode_ops(struct inode *inode) 587 { 588 if (S_ISREG(inode->i_mode)) { 589 inode->i_op = &ufs_file_inode_operations; 590 inode->i_fop = &ufs_file_operations; 591 inode->i_mapping->a_ops = &ufs_aops; 592 } else if (S_ISDIR(inode->i_mode)) { 593 inode->i_op = &ufs_dir_inode_operations; 594 inode->i_fop = &ufs_dir_operations; 595 inode->i_mapping->a_ops = &ufs_aops; 596 } else if (S_ISLNK(inode->i_mode)) { 597 if (!inode->i_blocks) 598 inode->i_op = &ufs_fast_symlink_inode_operations; 599 else { 600 inode->i_op = &page_symlink_inode_operations; 601 inode->i_mapping->a_ops = &ufs_aops; 602 } 603 } else 604 init_special_inode(inode, inode->i_mode, 605 ufs_get_inode_dev(inode->i_sb, UFS_I(inode))); 606 } 607 608 static void ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode) 609 { 610 struct ufs_inode_info *ufsi = UFS_I(inode); 611 struct super_block *sb = inode->i_sb; 612 mode_t mode; 613 unsigned i; 614 615 /* 616 * Copy data to the in-core inode. 617 */ 618 inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); 619 inode->i_nlink = fs16_to_cpu(sb, ufs_inode->ui_nlink); 620 if (inode->i_nlink == 0) 621 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 622 623 /* 624 * Linux now has 32-bit uid and gid, so we can support EFT. 625 */ 626 inode->i_uid = ufs_get_inode_uid(sb, ufs_inode); 627 inode->i_gid = ufs_get_inode_gid(sb, ufs_inode); 628 629 inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); 630 inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); 631 inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); 632 inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); 633 inode->i_mtime.tv_nsec = 0; 634 inode->i_atime.tv_nsec = 0; 635 inode->i_ctime.tv_nsec = 0; 636 inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); 637 ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); 638 ufsi->i_gen = fs32_to_cpu(sb, ufs_inode->ui_gen); 639 ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 640 ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 641 642 643 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 644 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) 645 ufsi->i_u1.i_data[i] = ufs_inode->ui_u2.ui_addr.ui_db[i]; 646 } else { 647 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) 648 ufsi->i_u1.i_symlink[i] = ufs_inode->ui_u2.ui_symlink[i]; 649 } 650 } 651 652 static void ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode) 653 { 654 struct ufs_inode_info *ufsi = UFS_I(inode); 655 struct super_block *sb = inode->i_sb; 656 mode_t mode; 657 unsigned i; 658 659 UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino); 660 /* 661 * Copy data to the in-core inode. 662 */ 663 inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); 664 inode->i_nlink = fs16_to_cpu(sb, ufs2_inode->ui_nlink); 665 if (inode->i_nlink == 0) 666 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 667 668 /* 669 * Linux now has 32-bit uid and gid, so we can support EFT. 670 */ 671 inode->i_uid = fs32_to_cpu(sb, ufs2_inode->ui_uid); 672 inode->i_gid = fs32_to_cpu(sb, ufs2_inode->ui_gid); 673 674 inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); 675 inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs2_inode->ui_atime.tv_sec); 676 inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs2_inode->ui_ctime.tv_sec); 677 inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs2_inode->ui_mtime.tv_sec); 678 inode->i_mtime.tv_nsec = 0; 679 inode->i_atime.tv_nsec = 0; 680 inode->i_ctime.tv_nsec = 0; 681 inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); 682 ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags); 683 ufsi->i_gen = fs32_to_cpu(sb, ufs2_inode->ui_gen); 684 /* 685 ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 686 ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 687 */ 688 689 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 690 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) 691 ufsi->i_u1.u2_i_data[i] = 692 ufs2_inode->ui_u2.ui_addr.ui_db[i]; 693 } else { 694 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) 695 ufsi->i_u1.i_symlink[i] = ufs2_inode->ui_u2.ui_symlink[i]; 696 } 697 } 698 699 void ufs_read_inode(struct inode * inode) 700 { 701 struct ufs_inode_info *ufsi = UFS_I(inode); 702 struct super_block * sb; 703 struct ufs_sb_private_info * uspi; 704 struct buffer_head * bh; 705 706 UFSD("ENTER, ino %lu\n", inode->i_ino); 707 708 sb = inode->i_sb; 709 uspi = UFS_SB(sb)->s_uspi; 710 711 if (inode->i_ino < UFS_ROOTINO || 712 inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { 713 ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n", 714 inode->i_ino); 715 goto bad_inode; 716 } 717 718 bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); 719 if (!bh) { 720 ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n", 721 inode->i_ino); 722 goto bad_inode; 723 } 724 if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { 725 struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 726 727 ufs2_read_inode(inode, 728 ufs2_inode + ufs_inotofsbo(inode->i_ino)); 729 } else { 730 struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data; 731 732 ufs1_read_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); 733 } 734 735 inode->i_blksize = PAGE_SIZE;/*This is the optimal IO size (for stat)*/ 736 inode->i_version++; 737 ufsi->i_lastfrag = 738 (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; 739 ufsi->i_dir_start_lookup = 0; 740 ufsi->i_osync = 0; 741 742 ufs_set_inode_ops(inode); 743 744 brelse(bh); 745 746 UFSD("EXIT\n"); 747 return; 748 749 bad_inode: 750 make_bad_inode(inode); 751 } 752 753 static int ufs_update_inode(struct inode * inode, int do_sync) 754 { 755 struct ufs_inode_info *ufsi = UFS_I(inode); 756 struct super_block * sb; 757 struct ufs_sb_private_info * uspi; 758 struct buffer_head * bh; 759 struct ufs_inode * ufs_inode; 760 unsigned i; 761 unsigned flags; 762 763 UFSD("ENTER, ino %lu\n", inode->i_ino); 764 765 sb = inode->i_sb; 766 uspi = UFS_SB(sb)->s_uspi; 767 flags = UFS_SB(sb)->s_flags; 768 769 if (inode->i_ino < UFS_ROOTINO || 770 inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { 771 ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); 772 return -1; 773 } 774 775 bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); 776 if (!bh) { 777 ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); 778 return -1; 779 } 780 ufs_inode = (struct ufs_inode *) (bh->b_data + ufs_inotofsbo(inode->i_ino) * sizeof(struct ufs_inode)); 781 782 ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 783 ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 784 785 ufs_set_inode_uid(sb, ufs_inode, inode->i_uid); 786 ufs_set_inode_gid(sb, ufs_inode, inode->i_gid); 787 788 ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 789 ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); 790 ufs_inode->ui_atime.tv_usec = 0; 791 ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); 792 ufs_inode->ui_ctime.tv_usec = 0; 793 ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); 794 ufs_inode->ui_mtime.tv_usec = 0; 795 ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); 796 ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 797 ufs_inode->ui_gen = cpu_to_fs32(sb, ufsi->i_gen); 798 799 if ((flags & UFS_UID_MASK) == UFS_UID_EFT) { 800 ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow); 801 ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag); 802 } 803 804 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 805 /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 806 ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0]; 807 } else if (inode->i_blocks) { 808 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) 809 ufs_inode->ui_u2.ui_addr.ui_db[i] = ufsi->i_u1.i_data[i]; 810 } 811 else { 812 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) 813 ufs_inode->ui_u2.ui_symlink[i] = ufsi->i_u1.i_symlink[i]; 814 } 815 816 if (!inode->i_nlink) 817 memset (ufs_inode, 0, sizeof(struct ufs_inode)); 818 819 mark_buffer_dirty(bh); 820 if (do_sync) 821 sync_dirty_buffer(bh); 822 brelse (bh); 823 824 UFSD("EXIT\n"); 825 return 0; 826 } 827 828 int ufs_write_inode (struct inode * inode, int wait) 829 { 830 int ret; 831 lock_kernel(); 832 ret = ufs_update_inode (inode, wait); 833 unlock_kernel(); 834 return ret; 835 } 836 837 int ufs_sync_inode (struct inode *inode) 838 { 839 return ufs_update_inode (inode, 1); 840 } 841 842 void ufs_delete_inode (struct inode * inode) 843 { 844 truncate_inode_pages(&inode->i_data, 0); 845 /*UFS_I(inode)->i_dtime = CURRENT_TIME;*/ 846 lock_kernel(); 847 mark_inode_dirty(inode); 848 ufs_update_inode(inode, IS_SYNC(inode)); 849 inode->i_size = 0; 850 if (inode->i_blocks) 851 ufs_truncate (inode); 852 ufs_free_inode (inode); 853 unlock_kernel(); 854 } 855