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", 102 uspi->s_fpbshift, uspi->s_apbmask, 103 (unsigned long long)mask); 104 105 if (depth == 0) 106 return 0; 107 108 p = offsets; 109 110 lock_kernel(); 111 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 112 goto ufs2; 113 114 block = ufsi->i_u1.i_data[*p++]; 115 if (!block) 116 goto out; 117 while (--depth) { 118 struct buffer_head *bh; 119 sector_t n = *p++; 120 121 bh = sb_bread(sb, uspi->s_sbbase + fs32_to_cpu(sb, block)+(n>>shift)); 122 if (!bh) 123 goto out; 124 block = ((__fs32 *) bh->b_data)[n & mask]; 125 brelse (bh); 126 if (!block) 127 goto out; 128 } 129 ret = (u64) (uspi->s_sbbase + fs32_to_cpu(sb, block) + (frag & uspi->s_fpbmask)); 130 goto out; 131 ufs2: 132 u2_block = ufsi->i_u1.u2_i_data[*p++]; 133 if (!u2_block) 134 goto out; 135 136 137 while (--depth) { 138 struct buffer_head *bh; 139 sector_t n = *p++; 140 141 142 temp = (u64)(uspi->s_sbbase) + fs64_to_cpu(sb, u2_block); 143 bh = sb_bread(sb, temp +(u64) (n>>shift)); 144 if (!bh) 145 goto out; 146 u2_block = ((__fs64 *)bh->b_data)[n & mask]; 147 brelse(bh); 148 if (!u2_block) 149 goto out; 150 } 151 temp = (u64)uspi->s_sbbase + fs64_to_cpu(sb, u2_block); 152 ret = temp + (u64) (frag & uspi->s_fpbmask); 153 154 out: 155 unlock_kernel(); 156 return ret; 157 } 158 159 /** 160 * ufs_inode_getfrag() - allocate new fragment(s) 161 * @inode - pointer to inode 162 * @fragment - number of `fragment' which hold pointer 163 * to new allocated fragment(s) 164 * @new_fragment - number of new allocated fragment(s) 165 * @required - how many fragment(s) we require 166 * @err - we set it if something wrong 167 * @phys - pointer to where we save physical number of new allocated fragments, 168 * NULL if we allocate not data(indirect blocks for example). 169 * @new - we set it if we allocate new block 170 * @locked_page - for ufs_new_fragments() 171 */ 172 static struct buffer_head * 173 ufs_inode_getfrag(struct inode *inode, u64 fragment, 174 sector_t new_fragment, unsigned int required, int *err, 175 long *phys, int *new, struct page *locked_page) 176 { 177 struct ufs_inode_info *ufsi = UFS_I(inode); 178 struct super_block *sb = inode->i_sb; 179 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 180 struct buffer_head * result; 181 unsigned blockoff, lastblockoff; 182 u64 tmp, goal, lastfrag, block, lastblock; 183 void *p, *p2; 184 185 UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, required %u, " 186 "metadata %d\n", inode->i_ino, (unsigned long long)fragment, 187 (unsigned long long)new_fragment, required, !phys); 188 189 /* TODO : to be done for write support 190 if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 191 goto ufs2; 192 */ 193 194 block = ufs_fragstoblks (fragment); 195 blockoff = ufs_fragnum (fragment); 196 p = ufs_get_direct_data_ptr(uspi, ufsi, block); 197 198 goal = 0; 199 200 repeat: 201 tmp = ufs_data_ptr_to_cpu(sb, p); 202 203 lastfrag = ufsi->i_lastfrag; 204 if (tmp && fragment < lastfrag) { 205 if (!phys) { 206 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 207 if (tmp == ufs_data_ptr_to_cpu(sb, p)) { 208 UFSD("EXIT, result %llu\n", 209 (unsigned long long)tmp + blockoff); 210 return result; 211 } 212 brelse (result); 213 goto repeat; 214 } else { 215 *phys = uspi->s_sbbase + tmp + blockoff; 216 return NULL; 217 } 218 } 219 220 lastblock = ufs_fragstoblks (lastfrag); 221 lastblockoff = ufs_fragnum (lastfrag); 222 /* 223 * We will extend file into new block beyond last allocated block 224 */ 225 if (lastblock < block) { 226 /* 227 * We must reallocate last allocated block 228 */ 229 if (lastblockoff) { 230 p2 = ufs_get_direct_data_ptr(uspi, ufsi, lastblock); 231 tmp = ufs_new_fragments(inode, p2, lastfrag, 232 ufs_data_ptr_to_cpu(sb, p2), 233 uspi->s_fpb - lastblockoff, 234 err, locked_page); 235 if (!tmp) { 236 if (lastfrag != ufsi->i_lastfrag) 237 goto repeat; 238 else 239 return NULL; 240 } 241 lastfrag = ufsi->i_lastfrag; 242 243 } 244 tmp = ufs_data_ptr_to_cpu(sb, 245 ufs_get_direct_data_ptr(uspi, ufsi, 246 lastblock)); 247 if (tmp) 248 goal = tmp + uspi->s_fpb; 249 tmp = ufs_new_fragments (inode, p, fragment - blockoff, 250 goal, required + blockoff, 251 err, 252 phys != NULL ? locked_page : NULL); 253 } else if (lastblock == block) { 254 /* 255 * We will extend last allocated block 256 */ 257 tmp = ufs_new_fragments(inode, p, fragment - 258 (blockoff - lastblockoff), 259 ufs_data_ptr_to_cpu(sb, p), 260 required + (blockoff - lastblockoff), 261 err, phys != NULL ? locked_page : NULL); 262 } else /* (lastblock > block) */ { 263 /* 264 * We will allocate new block before last allocated block 265 */ 266 if (block) { 267 tmp = ufs_data_ptr_to_cpu(sb, 268 ufs_get_direct_data_ptr(uspi, ufsi, block - 1)); 269 if (tmp) 270 goal = tmp + uspi->s_fpb; 271 } 272 tmp = ufs_new_fragments(inode, p, fragment - blockoff, 273 goal, uspi->s_fpb, err, 274 phys != NULL ? locked_page : NULL); 275 } 276 if (!tmp) { 277 if ((!blockoff && ufs_data_ptr_to_cpu(sb, p)) || 278 (blockoff && lastfrag != ufsi->i_lastfrag)) 279 goto repeat; 280 *err = -ENOSPC; 281 return NULL; 282 } 283 284 if (!phys) { 285 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 286 } else { 287 *phys = uspi->s_sbbase + tmp + blockoff; 288 result = NULL; 289 *err = 0; 290 *new = 1; 291 } 292 293 inode->i_ctime = CURRENT_TIME_SEC; 294 if (IS_SYNC(inode)) 295 ufs_sync_inode (inode); 296 mark_inode_dirty(inode); 297 UFSD("EXIT, result %llu\n", (unsigned long long)tmp + blockoff); 298 return result; 299 300 /* This part : To be implemented .... 301 Required only for writing, not required for READ-ONLY. 302 ufs2: 303 304 u2_block = ufs_fragstoblks(fragment); 305 u2_blockoff = ufs_fragnum(fragment); 306 p = ufsi->i_u1.u2_i_data + block; 307 goal = 0; 308 309 repeat2: 310 tmp = fs32_to_cpu(sb, *p); 311 lastfrag = ufsi->i_lastfrag; 312 313 */ 314 } 315 316 /** 317 * ufs_inode_getblock() - allocate new block 318 * @inode - pointer to inode 319 * @bh - pointer to block which hold "pointer" to new allocated block 320 * @fragment - number of `fragment' which hold pointer 321 * to new allocated block 322 * @new_fragment - number of new allocated fragment 323 * (block will hold this fragment and also uspi->s_fpb-1) 324 * @err - see ufs_inode_getfrag() 325 * @phys - see ufs_inode_getfrag() 326 * @new - see ufs_inode_getfrag() 327 * @locked_page - see ufs_inode_getfrag() 328 */ 329 static struct buffer_head * 330 ufs_inode_getblock(struct inode *inode, struct buffer_head *bh, 331 u64 fragment, sector_t new_fragment, int *err, 332 long *phys, int *new, struct page *locked_page) 333 { 334 struct super_block *sb = inode->i_sb; 335 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 336 struct buffer_head * result; 337 unsigned blockoff; 338 u64 tmp, goal, block; 339 void *p; 340 341 block = ufs_fragstoblks (fragment); 342 blockoff = ufs_fragnum (fragment); 343 344 UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, metadata %d\n", 345 inode->i_ino, (unsigned long long)fragment, 346 (unsigned long long)new_fragment, !phys); 347 348 result = NULL; 349 if (!bh) 350 goto out; 351 if (!buffer_uptodate(bh)) { 352 ll_rw_block (READ, 1, &bh); 353 wait_on_buffer (bh); 354 if (!buffer_uptodate(bh)) 355 goto out; 356 } 357 if (uspi->fs_magic == UFS2_MAGIC) 358 p = (__fs64 *)bh->b_data + block; 359 else 360 p = (__fs32 *)bh->b_data + block; 361 repeat: 362 tmp = ufs_data_ptr_to_cpu(sb, p); 363 if (tmp) { 364 if (!phys) { 365 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 366 if (tmp == ufs_data_ptr_to_cpu(sb, p)) 367 goto out; 368 brelse (result); 369 goto repeat; 370 } else { 371 *phys = uspi->s_sbbase + tmp + blockoff; 372 goto out; 373 } 374 } 375 376 if (block && (uspi->fs_magic == UFS2_MAGIC ? 377 (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[block-1])) : 378 (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[block-1])))) 379 goal = tmp + uspi->s_fpb; 380 else 381 goal = bh->b_blocknr + uspi->s_fpb; 382 tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, 383 uspi->s_fpb, err, locked_page); 384 if (!tmp) { 385 if (ufs_data_ptr_to_cpu(sb, p)) 386 goto repeat; 387 goto out; 388 } 389 390 391 if (!phys) { 392 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 393 } else { 394 *phys = uspi->s_sbbase + tmp + blockoff; 395 *new = 1; 396 } 397 398 mark_buffer_dirty(bh); 399 if (IS_SYNC(inode)) 400 sync_dirty_buffer(bh); 401 inode->i_ctime = CURRENT_TIME_SEC; 402 mark_inode_dirty(inode); 403 UFSD("result %llu\n", (unsigned long long)tmp + blockoff); 404 out: 405 brelse (bh); 406 UFSD("EXIT\n"); 407 return result; 408 } 409 410 /** 411 * ufs_getfrag_bloc() - `get_block_t' function, interface between UFS and 412 * readpage, writepage and so on 413 */ 414 415 int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create) 416 { 417 struct super_block * sb = inode->i_sb; 418 struct ufs_sb_private_info * uspi = UFS_SB(sb)->s_uspi; 419 struct buffer_head * bh; 420 int ret, err, new; 421 unsigned long ptr,phys; 422 u64 phys64 = 0; 423 424 if (!create) { 425 phys64 = ufs_frag_map(inode, fragment); 426 UFSD("phys64 = %llu\n", (unsigned long long)phys64); 427 if (phys64) 428 map_bh(bh_result, sb, phys64); 429 return 0; 430 } 431 432 /* This code entered only while writing ....? */ 433 434 err = -EIO; 435 new = 0; 436 ret = 0; 437 bh = NULL; 438 439 lock_kernel(); 440 441 UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment); 442 if (fragment < 0) 443 goto abort_negative; 444 if (fragment > 445 ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb) 446 << uspi->s_fpbshift)) 447 goto abort_too_big; 448 449 err = 0; 450 ptr = fragment; 451 452 /* 453 * ok, these macros clean the logic up a bit and make 454 * it much more readable: 455 */ 456 #define GET_INODE_DATABLOCK(x) \ 457 ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new,\ 458 bh_result->b_page) 459 #define GET_INODE_PTR(x) \ 460 ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL,\ 461 bh_result->b_page) 462 #define GET_INDIRECT_DATABLOCK(x) \ 463 ufs_inode_getblock(inode, bh, x, fragment, \ 464 &err, &phys, &new, bh_result->b_page) 465 #define GET_INDIRECT_PTR(x) \ 466 ufs_inode_getblock(inode, bh, x, fragment, \ 467 &err, NULL, NULL, NULL) 468 469 if (ptr < UFS_NDIR_FRAGMENT) { 470 bh = GET_INODE_DATABLOCK(ptr); 471 goto out; 472 } 473 ptr -= UFS_NDIR_FRAGMENT; 474 if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) { 475 bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift)); 476 goto get_indirect; 477 } 478 ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift); 479 if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) { 480 bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift)); 481 goto get_double; 482 } 483 ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift); 484 bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift)); 485 bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask); 486 get_double: 487 bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask); 488 get_indirect: 489 bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask); 490 491 #undef GET_INODE_DATABLOCK 492 #undef GET_INODE_PTR 493 #undef GET_INDIRECT_DATABLOCK 494 #undef GET_INDIRECT_PTR 495 496 out: 497 if (err) 498 goto abort; 499 if (new) 500 set_buffer_new(bh_result); 501 map_bh(bh_result, sb, phys); 502 abort: 503 unlock_kernel(); 504 return err; 505 506 abort_negative: 507 ufs_warning(sb, "ufs_get_block", "block < 0"); 508 goto abort; 509 510 abort_too_big: 511 ufs_warning(sb, "ufs_get_block", "block > big"); 512 goto abort; 513 } 514 515 static struct buffer_head *ufs_getfrag(struct inode *inode, 516 unsigned int fragment, 517 int create, int *err) 518 { 519 struct buffer_head dummy; 520 int error; 521 522 dummy.b_state = 0; 523 dummy.b_blocknr = -1000; 524 error = ufs_getfrag_block(inode, fragment, &dummy, create); 525 *err = error; 526 if (!error && buffer_mapped(&dummy)) { 527 struct buffer_head *bh; 528 bh = sb_getblk(inode->i_sb, dummy.b_blocknr); 529 if (buffer_new(&dummy)) { 530 memset(bh->b_data, 0, inode->i_sb->s_blocksize); 531 set_buffer_uptodate(bh); 532 mark_buffer_dirty(bh); 533 } 534 return bh; 535 } 536 return NULL; 537 } 538 539 struct buffer_head * ufs_bread (struct inode * inode, unsigned fragment, 540 int create, int * err) 541 { 542 struct buffer_head * bh; 543 544 UFSD("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment); 545 bh = ufs_getfrag (inode, fragment, create, err); 546 if (!bh || buffer_uptodate(bh)) 547 return bh; 548 ll_rw_block (READ, 1, &bh); 549 wait_on_buffer (bh); 550 if (buffer_uptodate(bh)) 551 return bh; 552 brelse (bh); 553 *err = -EIO; 554 return NULL; 555 } 556 557 static int ufs_writepage(struct page *page, struct writeback_control *wbc) 558 { 559 return block_write_full_page(page,ufs_getfrag_block,wbc); 560 } 561 static int ufs_readpage(struct file *file, struct page *page) 562 { 563 return block_read_full_page(page,ufs_getfrag_block); 564 } 565 static int ufs_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to) 566 { 567 return block_prepare_write(page,from,to,ufs_getfrag_block); 568 } 569 static sector_t ufs_bmap(struct address_space *mapping, sector_t block) 570 { 571 return generic_block_bmap(mapping,block,ufs_getfrag_block); 572 } 573 const struct address_space_operations ufs_aops = { 574 .readpage = ufs_readpage, 575 .writepage = ufs_writepage, 576 .sync_page = block_sync_page, 577 .prepare_write = ufs_prepare_write, 578 .commit_write = generic_commit_write, 579 .bmap = ufs_bmap 580 }; 581 582 static void ufs_set_inode_ops(struct inode *inode) 583 { 584 if (S_ISREG(inode->i_mode)) { 585 inode->i_op = &ufs_file_inode_operations; 586 inode->i_fop = &ufs_file_operations; 587 inode->i_mapping->a_ops = &ufs_aops; 588 } else if (S_ISDIR(inode->i_mode)) { 589 inode->i_op = &ufs_dir_inode_operations; 590 inode->i_fop = &ufs_dir_operations; 591 inode->i_mapping->a_ops = &ufs_aops; 592 } else if (S_ISLNK(inode->i_mode)) { 593 if (!inode->i_blocks) 594 inode->i_op = &ufs_fast_symlink_inode_operations; 595 else { 596 inode->i_op = &page_symlink_inode_operations; 597 inode->i_mapping->a_ops = &ufs_aops; 598 } 599 } else 600 init_special_inode(inode, inode->i_mode, 601 ufs_get_inode_dev(inode->i_sb, UFS_I(inode))); 602 } 603 604 static void ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode) 605 { 606 struct ufs_inode_info *ufsi = UFS_I(inode); 607 struct super_block *sb = inode->i_sb; 608 mode_t mode; 609 unsigned i; 610 611 /* 612 * Copy data to the in-core inode. 613 */ 614 inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); 615 inode->i_nlink = fs16_to_cpu(sb, ufs_inode->ui_nlink); 616 if (inode->i_nlink == 0) 617 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 618 619 /* 620 * Linux now has 32-bit uid and gid, so we can support EFT. 621 */ 622 inode->i_uid = ufs_get_inode_uid(sb, ufs_inode); 623 inode->i_gid = ufs_get_inode_gid(sb, ufs_inode); 624 625 inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); 626 inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); 627 inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); 628 inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); 629 inode->i_mtime.tv_nsec = 0; 630 inode->i_atime.tv_nsec = 0; 631 inode->i_ctime.tv_nsec = 0; 632 inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); 633 inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen); 634 ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); 635 ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 636 ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 637 638 639 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 640 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) 641 ufsi->i_u1.i_data[i] = ufs_inode->ui_u2.ui_addr.ui_db[i]; 642 } else { 643 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) 644 ufsi->i_u1.i_symlink[i] = ufs_inode->ui_u2.ui_symlink[i]; 645 } 646 } 647 648 static void ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode) 649 { 650 struct ufs_inode_info *ufsi = UFS_I(inode); 651 struct super_block *sb = inode->i_sb; 652 mode_t mode; 653 unsigned i; 654 655 UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino); 656 /* 657 * Copy data to the in-core inode. 658 */ 659 inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); 660 inode->i_nlink = fs16_to_cpu(sb, ufs2_inode->ui_nlink); 661 if (inode->i_nlink == 0) 662 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 663 664 /* 665 * Linux now has 32-bit uid and gid, so we can support EFT. 666 */ 667 inode->i_uid = fs32_to_cpu(sb, ufs2_inode->ui_uid); 668 inode->i_gid = fs32_to_cpu(sb, ufs2_inode->ui_gid); 669 670 inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); 671 inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime); 672 inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime); 673 inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime); 674 inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec); 675 inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec); 676 inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec); 677 inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); 678 inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen); 679 ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags); 680 /* 681 ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 682 ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 683 */ 684 685 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 686 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) 687 ufsi->i_u1.u2_i_data[i] = 688 ufs2_inode->ui_u2.ui_addr.ui_db[i]; 689 } else { 690 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) 691 ufsi->i_u1.i_symlink[i] = ufs2_inode->ui_u2.ui_symlink[i]; 692 } 693 } 694 695 void ufs_read_inode(struct inode * inode) 696 { 697 struct ufs_inode_info *ufsi = UFS_I(inode); 698 struct super_block * sb; 699 struct ufs_sb_private_info * uspi; 700 struct buffer_head * bh; 701 702 UFSD("ENTER, ino %lu\n", inode->i_ino); 703 704 sb = inode->i_sb; 705 uspi = UFS_SB(sb)->s_uspi; 706 707 if (inode->i_ino < UFS_ROOTINO || 708 inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { 709 ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n", 710 inode->i_ino); 711 goto bad_inode; 712 } 713 714 bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); 715 if (!bh) { 716 ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n", 717 inode->i_ino); 718 goto bad_inode; 719 } 720 if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { 721 struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 722 723 ufs2_read_inode(inode, 724 ufs2_inode + ufs_inotofsbo(inode->i_ino)); 725 } else { 726 struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data; 727 728 ufs1_read_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); 729 } 730 731 inode->i_version++; 732 ufsi->i_lastfrag = 733 (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; 734 ufsi->i_dir_start_lookup = 0; 735 ufsi->i_osync = 0; 736 737 ufs_set_inode_ops(inode); 738 739 brelse(bh); 740 741 UFSD("EXIT\n"); 742 return; 743 744 bad_inode: 745 make_bad_inode(inode); 746 } 747 748 static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode) 749 { 750 struct super_block *sb = inode->i_sb; 751 struct ufs_inode_info *ufsi = UFS_I(inode); 752 unsigned i; 753 754 ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 755 ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 756 757 ufs_set_inode_uid(sb, ufs_inode, inode->i_uid); 758 ufs_set_inode_gid(sb, ufs_inode, inode->i_gid); 759 760 ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 761 ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); 762 ufs_inode->ui_atime.tv_usec = 0; 763 ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); 764 ufs_inode->ui_ctime.tv_usec = 0; 765 ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); 766 ufs_inode->ui_mtime.tv_usec = 0; 767 ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); 768 ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 769 ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 770 771 if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) { 772 ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow); 773 ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag); 774 } 775 776 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 777 /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 778 ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0]; 779 } else if (inode->i_blocks) { 780 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) 781 ufs_inode->ui_u2.ui_addr.ui_db[i] = ufsi->i_u1.i_data[i]; 782 } 783 else { 784 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) 785 ufs_inode->ui_u2.ui_symlink[i] = ufsi->i_u1.i_symlink[i]; 786 } 787 788 if (!inode->i_nlink) 789 memset (ufs_inode, 0, sizeof(struct ufs_inode)); 790 } 791 792 static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode) 793 { 794 struct super_block *sb = inode->i_sb; 795 struct ufs_inode_info *ufsi = UFS_I(inode); 796 unsigned i; 797 798 UFSD("ENTER\n"); 799 ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 800 ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 801 802 ufs_inode->ui_uid = cpu_to_fs32(sb, inode->i_uid); 803 ufs_inode->ui_gid = cpu_to_fs32(sb, inode->i_gid); 804 805 ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 806 ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec); 807 ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec); 808 ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec); 809 ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec); 810 ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec); 811 ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec); 812 813 ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks); 814 ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 815 ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 816 817 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 818 /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 819 ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0]; 820 } else if (inode->i_blocks) { 821 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) 822 ufs_inode->ui_u2.ui_addr.ui_db[i] = ufsi->i_u1.u2_i_data[i]; 823 } else { 824 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) 825 ufs_inode->ui_u2.ui_symlink[i] = ufsi->i_u1.i_symlink[i]; 826 } 827 828 if (!inode->i_nlink) 829 memset (ufs_inode, 0, sizeof(struct ufs2_inode)); 830 UFSD("EXIT\n"); 831 } 832 833 static int ufs_update_inode(struct inode * inode, int do_sync) 834 { 835 struct super_block *sb = inode->i_sb; 836 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 837 struct buffer_head * bh; 838 839 UFSD("ENTER, ino %lu\n", inode->i_ino); 840 841 if (inode->i_ino < UFS_ROOTINO || 842 inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { 843 ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); 844 return -1; 845 } 846 847 bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); 848 if (!bh) { 849 ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); 850 return -1; 851 } 852 if (uspi->fs_magic == UFS2_MAGIC) { 853 struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 854 855 ufs2_update_inode(inode, 856 ufs2_inode + ufs_inotofsbo(inode->i_ino)); 857 } else { 858 struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data; 859 860 ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); 861 } 862 863 mark_buffer_dirty(bh); 864 if (do_sync) 865 sync_dirty_buffer(bh); 866 brelse (bh); 867 868 UFSD("EXIT\n"); 869 return 0; 870 } 871 872 int ufs_write_inode (struct inode * inode, int wait) 873 { 874 int ret; 875 lock_kernel(); 876 ret = ufs_update_inode (inode, wait); 877 unlock_kernel(); 878 return ret; 879 } 880 881 int ufs_sync_inode (struct inode *inode) 882 { 883 return ufs_update_inode (inode, 1); 884 } 885 886 void ufs_delete_inode (struct inode * inode) 887 { 888 loff_t old_i_size; 889 890 truncate_inode_pages(&inode->i_data, 0); 891 /*UFS_I(inode)->i_dtime = CURRENT_TIME;*/ 892 lock_kernel(); 893 mark_inode_dirty(inode); 894 ufs_update_inode(inode, IS_SYNC(inode)); 895 old_i_size = inode->i_size; 896 inode->i_size = 0; 897 if (inode->i_blocks && ufs_truncate(inode, old_i_size)) 898 ufs_warning(inode->i_sb, __FUNCTION__, "ufs_truncate failed\n"); 899 ufs_free_inode (inode); 900 unlock_kernel(); 901 } 902