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/time.h> 34 #include <linux/stat.h> 35 #include <linux/string.h> 36 #include <linux/mm.h> 37 #include <linux/smp_lock.h> 38 #include <linux/buffer_head.h> 39 40 #include "ufs_fs.h" 41 #include "ufs.h" 42 #include "swab.h" 43 #include "util.h" 44 45 static u64 ufs_frag_map(struct inode *inode, sector_t frag); 46 47 static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t offsets[4]) 48 { 49 struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi; 50 int ptrs = uspi->s_apb; 51 int ptrs_bits = uspi->s_apbshift; 52 const long direct_blocks = UFS_NDADDR, 53 indirect_blocks = ptrs, 54 double_blocks = (1 << (ptrs_bits * 2)); 55 int n = 0; 56 57 58 UFSD("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks); 59 if (i_block < direct_blocks) { 60 offsets[n++] = i_block; 61 } else if ((i_block -= direct_blocks) < indirect_blocks) { 62 offsets[n++] = UFS_IND_BLOCK; 63 offsets[n++] = i_block; 64 } else if ((i_block -= indirect_blocks) < double_blocks) { 65 offsets[n++] = UFS_DIND_BLOCK; 66 offsets[n++] = i_block >> ptrs_bits; 67 offsets[n++] = i_block & (ptrs - 1); 68 } else if (((i_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) { 69 offsets[n++] = UFS_TIND_BLOCK; 70 offsets[n++] = i_block >> (ptrs_bits * 2); 71 offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1); 72 offsets[n++] = i_block & (ptrs - 1); 73 } else { 74 ufs_warning(inode->i_sb, "ufs_block_to_path", "block > big"); 75 } 76 return n; 77 } 78 79 /* 80 * Returns the location of the fragment from 81 * the begining of the filesystem. 82 */ 83 84 static u64 ufs_frag_map(struct inode *inode, sector_t frag) 85 { 86 struct ufs_inode_info *ufsi = UFS_I(inode); 87 struct super_block *sb = inode->i_sb; 88 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 89 u64 mask = (u64) uspi->s_apbmask>>uspi->s_fpbshift; 90 int shift = uspi->s_apbshift-uspi->s_fpbshift; 91 sector_t offsets[4], *p; 92 int depth = ufs_block_to_path(inode, frag >> uspi->s_fpbshift, offsets); 93 u64 ret = 0L; 94 __fs32 block; 95 __fs64 u2_block = 0L; 96 unsigned flags = UFS_SB(sb)->s_flags; 97 u64 temp = 0L; 98 99 UFSD(": frag = %llu depth = %d\n", (unsigned long long)frag, depth); 100 UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n", 101 uspi->s_fpbshift, uspi->s_apbmask, 102 (unsigned long long)mask); 103 104 if (depth == 0) 105 return 0; 106 107 p = offsets; 108 109 lock_kernel(); 110 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 111 goto ufs2; 112 113 block = ufsi->i_u1.i_data[*p++]; 114 if (!block) 115 goto out; 116 while (--depth) { 117 struct buffer_head *bh; 118 sector_t n = *p++; 119 120 bh = sb_bread(sb, uspi->s_sbbase + fs32_to_cpu(sb, block)+(n>>shift)); 121 if (!bh) 122 goto out; 123 block = ((__fs32 *) bh->b_data)[n & mask]; 124 brelse (bh); 125 if (!block) 126 goto out; 127 } 128 ret = (u64) (uspi->s_sbbase + fs32_to_cpu(sb, block) + (frag & uspi->s_fpbmask)); 129 goto out; 130 ufs2: 131 u2_block = ufsi->i_u1.u2_i_data[*p++]; 132 if (!u2_block) 133 goto out; 134 135 136 while (--depth) { 137 struct buffer_head *bh; 138 sector_t n = *p++; 139 140 141 temp = (u64)(uspi->s_sbbase) + fs64_to_cpu(sb, u2_block); 142 bh = sb_bread(sb, temp +(u64) (n>>shift)); 143 if (!bh) 144 goto out; 145 u2_block = ((__fs64 *)bh->b_data)[n & mask]; 146 brelse(bh); 147 if (!u2_block) 148 goto out; 149 } 150 temp = (u64)uspi->s_sbbase + fs64_to_cpu(sb, u2_block); 151 ret = temp + (u64) (frag & uspi->s_fpbmask); 152 153 out: 154 unlock_kernel(); 155 return ret; 156 } 157 158 /** 159 * ufs_inode_getfrag() - allocate new fragment(s) 160 * @inode - pointer to inode 161 * @fragment - number of `fragment' which hold pointer 162 * to new allocated fragment(s) 163 * @new_fragment - number of new allocated fragment(s) 164 * @required - how many fragment(s) we require 165 * @err - we set it if something wrong 166 * @phys - pointer to where we save physical number of new allocated fragments, 167 * NULL if we allocate not data(indirect blocks for example). 168 * @new - we set it if we allocate new block 169 * @locked_page - for ufs_new_fragments() 170 */ 171 static struct buffer_head * 172 ufs_inode_getfrag(struct inode *inode, u64 fragment, 173 sector_t new_fragment, unsigned int required, int *err, 174 long *phys, int *new, struct page *locked_page) 175 { 176 struct ufs_inode_info *ufsi = UFS_I(inode); 177 struct super_block *sb = inode->i_sb; 178 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 179 struct buffer_head * result; 180 unsigned blockoff, lastblockoff; 181 u64 tmp, goal, lastfrag, block, lastblock; 182 void *p, *p2; 183 184 UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, required %u, " 185 "metadata %d\n", inode->i_ino, (unsigned long long)fragment, 186 (unsigned long long)new_fragment, required, !phys); 187 188 /* TODO : to be done for write support 189 if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 190 goto ufs2; 191 */ 192 193 block = ufs_fragstoblks (fragment); 194 blockoff = ufs_fragnum (fragment); 195 p = ufs_get_direct_data_ptr(uspi, ufsi, block); 196 197 goal = 0; 198 199 repeat: 200 tmp = ufs_data_ptr_to_cpu(sb, p); 201 202 lastfrag = ufsi->i_lastfrag; 203 if (tmp && fragment < lastfrag) { 204 if (!phys) { 205 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 206 if (tmp == ufs_data_ptr_to_cpu(sb, p)) { 207 UFSD("EXIT, result %llu\n", 208 (unsigned long long)tmp + blockoff); 209 return result; 210 } 211 brelse (result); 212 goto repeat; 213 } else { 214 *phys = uspi->s_sbbase + tmp + blockoff; 215 return NULL; 216 } 217 } 218 219 lastblock = ufs_fragstoblks (lastfrag); 220 lastblockoff = ufs_fragnum (lastfrag); 221 /* 222 * We will extend file into new block beyond last allocated block 223 */ 224 if (lastblock < block) { 225 /* 226 * We must reallocate last allocated block 227 */ 228 if (lastblockoff) { 229 p2 = ufs_get_direct_data_ptr(uspi, ufsi, lastblock); 230 tmp = ufs_new_fragments(inode, p2, lastfrag, 231 ufs_data_ptr_to_cpu(sb, p2), 232 uspi->s_fpb - lastblockoff, 233 err, locked_page); 234 if (!tmp) { 235 if (lastfrag != ufsi->i_lastfrag) 236 goto repeat; 237 else 238 return NULL; 239 } 240 lastfrag = ufsi->i_lastfrag; 241 242 } 243 tmp = ufs_data_ptr_to_cpu(sb, 244 ufs_get_direct_data_ptr(uspi, ufsi, 245 lastblock)); 246 if (tmp) 247 goal = tmp + uspi->s_fpb; 248 tmp = ufs_new_fragments (inode, p, fragment - blockoff, 249 goal, required + blockoff, 250 err, 251 phys != NULL ? locked_page : NULL); 252 } else if (lastblock == block) { 253 /* 254 * We will extend last allocated block 255 */ 256 tmp = ufs_new_fragments(inode, p, fragment - 257 (blockoff - lastblockoff), 258 ufs_data_ptr_to_cpu(sb, p), 259 required + (blockoff - lastblockoff), 260 err, phys != NULL ? locked_page : NULL); 261 } else /* (lastblock > block) */ { 262 /* 263 * We will allocate new block before last allocated block 264 */ 265 if (block) { 266 tmp = ufs_data_ptr_to_cpu(sb, 267 ufs_get_direct_data_ptr(uspi, ufsi, block - 1)); 268 if (tmp) 269 goal = tmp + uspi->s_fpb; 270 } 271 tmp = ufs_new_fragments(inode, p, fragment - blockoff, 272 goal, uspi->s_fpb, err, 273 phys != NULL ? locked_page : NULL); 274 } 275 if (!tmp) { 276 if ((!blockoff && ufs_data_ptr_to_cpu(sb, p)) || 277 (blockoff && lastfrag != ufsi->i_lastfrag)) 278 goto repeat; 279 *err = -ENOSPC; 280 return NULL; 281 } 282 283 if (!phys) { 284 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 285 } else { 286 *phys = uspi->s_sbbase + tmp + blockoff; 287 result = NULL; 288 *err = 0; 289 *new = 1; 290 } 291 292 inode->i_ctime = CURRENT_TIME_SEC; 293 if (IS_SYNC(inode)) 294 ufs_sync_inode (inode); 295 mark_inode_dirty(inode); 296 UFSD("EXIT, result %llu\n", (unsigned long long)tmp + blockoff); 297 return result; 298 299 /* This part : To be implemented .... 300 Required only for writing, not required for READ-ONLY. 301 ufs2: 302 303 u2_block = ufs_fragstoblks(fragment); 304 u2_blockoff = ufs_fragnum(fragment); 305 p = ufsi->i_u1.u2_i_data + block; 306 goal = 0; 307 308 repeat2: 309 tmp = fs32_to_cpu(sb, *p); 310 lastfrag = ufsi->i_lastfrag; 311 312 */ 313 } 314 315 /** 316 * ufs_inode_getblock() - allocate new block 317 * @inode - pointer to inode 318 * @bh - pointer to block which hold "pointer" to new allocated block 319 * @fragment - number of `fragment' which hold pointer 320 * to new allocated block 321 * @new_fragment - number of new allocated fragment 322 * (block will hold this fragment and also uspi->s_fpb-1) 323 * @err - see ufs_inode_getfrag() 324 * @phys - see ufs_inode_getfrag() 325 * @new - see ufs_inode_getfrag() 326 * @locked_page - see ufs_inode_getfrag() 327 */ 328 static struct buffer_head * 329 ufs_inode_getblock(struct inode *inode, struct buffer_head *bh, 330 u64 fragment, sector_t new_fragment, int *err, 331 long *phys, int *new, struct page *locked_page) 332 { 333 struct super_block *sb = inode->i_sb; 334 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 335 struct buffer_head * result; 336 unsigned blockoff; 337 u64 tmp, goal, block; 338 void *p; 339 340 block = ufs_fragstoblks (fragment); 341 blockoff = ufs_fragnum (fragment); 342 343 UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, metadata %d\n", 344 inode->i_ino, (unsigned long long)fragment, 345 (unsigned long long)new_fragment, !phys); 346 347 result = NULL; 348 if (!bh) 349 goto out; 350 if (!buffer_uptodate(bh)) { 351 ll_rw_block (READ, 1, &bh); 352 wait_on_buffer (bh); 353 if (!buffer_uptodate(bh)) 354 goto out; 355 } 356 if (uspi->fs_magic == UFS2_MAGIC) 357 p = (__fs64 *)bh->b_data + block; 358 else 359 p = (__fs32 *)bh->b_data + block; 360 repeat: 361 tmp = ufs_data_ptr_to_cpu(sb, p); 362 if (tmp) { 363 if (!phys) { 364 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 365 if (tmp == ufs_data_ptr_to_cpu(sb, p)) 366 goto out; 367 brelse (result); 368 goto repeat; 369 } else { 370 *phys = uspi->s_sbbase + tmp + blockoff; 371 goto out; 372 } 373 } 374 375 if (block && (uspi->fs_magic == UFS2_MAGIC ? 376 (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[block-1])) : 377 (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[block-1])))) 378 goal = tmp + uspi->s_fpb; 379 else 380 goal = bh->b_blocknr + uspi->s_fpb; 381 tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, 382 uspi->s_fpb, err, locked_page); 383 if (!tmp) { 384 if (ufs_data_ptr_to_cpu(sb, p)) 385 goto repeat; 386 goto out; 387 } 388 389 390 if (!phys) { 391 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 392 } else { 393 *phys = uspi->s_sbbase + tmp + blockoff; 394 *new = 1; 395 } 396 397 mark_buffer_dirty(bh); 398 if (IS_SYNC(inode)) 399 sync_dirty_buffer(bh); 400 inode->i_ctime = CURRENT_TIME_SEC; 401 mark_inode_dirty(inode); 402 UFSD("result %llu\n", (unsigned long long)tmp + blockoff); 403 out: 404 brelse (bh); 405 UFSD("EXIT\n"); 406 return result; 407 } 408 409 /** 410 * ufs_getfrag_bloc() - `get_block_t' function, interface between UFS and 411 * readpage, writepage and so on 412 */ 413 414 int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create) 415 { 416 struct super_block * sb = inode->i_sb; 417 struct ufs_sb_private_info * uspi = UFS_SB(sb)->s_uspi; 418 struct buffer_head * bh; 419 int ret, err, new; 420 unsigned long ptr,phys; 421 u64 phys64 = 0; 422 423 if (!create) { 424 phys64 = ufs_frag_map(inode, fragment); 425 UFSD("phys64 = %llu\n", (unsigned long long)phys64); 426 if (phys64) 427 map_bh(bh_result, sb, phys64); 428 return 0; 429 } 430 431 /* This code entered only while writing ....? */ 432 433 err = -EIO; 434 new = 0; 435 ret = 0; 436 bh = NULL; 437 438 lock_kernel(); 439 440 UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment); 441 if (fragment > 442 ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb) 443 << uspi->s_fpbshift)) 444 goto abort_too_big; 445 446 err = 0; 447 ptr = fragment; 448 449 /* 450 * ok, these macros clean the logic up a bit and make 451 * it much more readable: 452 */ 453 #define GET_INODE_DATABLOCK(x) \ 454 ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new,\ 455 bh_result->b_page) 456 #define GET_INODE_PTR(x) \ 457 ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL,\ 458 bh_result->b_page) 459 #define GET_INDIRECT_DATABLOCK(x) \ 460 ufs_inode_getblock(inode, bh, x, fragment, \ 461 &err, &phys, &new, bh_result->b_page) 462 #define GET_INDIRECT_PTR(x) \ 463 ufs_inode_getblock(inode, bh, x, fragment, \ 464 &err, NULL, NULL, NULL) 465 466 if (ptr < UFS_NDIR_FRAGMENT) { 467 bh = GET_INODE_DATABLOCK(ptr); 468 goto out; 469 } 470 ptr -= UFS_NDIR_FRAGMENT; 471 if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) { 472 bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift)); 473 goto get_indirect; 474 } 475 ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift); 476 if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) { 477 bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift)); 478 goto get_double; 479 } 480 ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift); 481 bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift)); 482 bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask); 483 get_double: 484 bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask); 485 get_indirect: 486 bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask); 487 488 #undef GET_INODE_DATABLOCK 489 #undef GET_INODE_PTR 490 #undef GET_INDIRECT_DATABLOCK 491 #undef GET_INDIRECT_PTR 492 493 out: 494 if (err) 495 goto abort; 496 if (new) 497 set_buffer_new(bh_result); 498 map_bh(bh_result, sb, phys); 499 abort: 500 unlock_kernel(); 501 return err; 502 503 abort_too_big: 504 ufs_warning(sb, "ufs_get_block", "block > big"); 505 goto abort; 506 } 507 508 static struct buffer_head *ufs_getfrag(struct inode *inode, 509 unsigned int fragment, 510 int create, int *err) 511 { 512 struct buffer_head dummy; 513 int error; 514 515 dummy.b_state = 0; 516 dummy.b_blocknr = -1000; 517 error = ufs_getfrag_block(inode, fragment, &dummy, create); 518 *err = error; 519 if (!error && buffer_mapped(&dummy)) { 520 struct buffer_head *bh; 521 bh = sb_getblk(inode->i_sb, dummy.b_blocknr); 522 if (buffer_new(&dummy)) { 523 memset(bh->b_data, 0, inode->i_sb->s_blocksize); 524 set_buffer_uptodate(bh); 525 mark_buffer_dirty(bh); 526 } 527 return bh; 528 } 529 return NULL; 530 } 531 532 struct buffer_head * ufs_bread (struct inode * inode, unsigned fragment, 533 int create, int * err) 534 { 535 struct buffer_head * bh; 536 537 UFSD("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment); 538 bh = ufs_getfrag (inode, fragment, create, err); 539 if (!bh || buffer_uptodate(bh)) 540 return bh; 541 ll_rw_block (READ, 1, &bh); 542 wait_on_buffer (bh); 543 if (buffer_uptodate(bh)) 544 return bh; 545 brelse (bh); 546 *err = -EIO; 547 return NULL; 548 } 549 550 static int ufs_writepage(struct page *page, struct writeback_control *wbc) 551 { 552 return block_write_full_page(page,ufs_getfrag_block,wbc); 553 } 554 555 static int ufs_readpage(struct file *file, struct page *page) 556 { 557 return block_read_full_page(page,ufs_getfrag_block); 558 } 559 560 int __ufs_write_begin(struct file *file, struct address_space *mapping, 561 loff_t pos, unsigned len, unsigned flags, 562 struct page **pagep, void **fsdata) 563 { 564 return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata, 565 ufs_getfrag_block); 566 } 567 568 static int ufs_write_begin(struct file *file, struct address_space *mapping, 569 loff_t pos, unsigned len, unsigned flags, 570 struct page **pagep, void **fsdata) 571 { 572 *pagep = NULL; 573 return __ufs_write_begin(file, mapping, pos, len, flags, pagep, fsdata); 574 } 575 576 static sector_t ufs_bmap(struct address_space *mapping, sector_t block) 577 { 578 return generic_block_bmap(mapping,block,ufs_getfrag_block); 579 } 580 581 const struct address_space_operations ufs_aops = { 582 .readpage = ufs_readpage, 583 .writepage = ufs_writepage, 584 .sync_page = block_sync_page, 585 .write_begin = ufs_write_begin, 586 .write_end = generic_write_end, 587 .bmap = ufs_bmap 588 }; 589 590 static void ufs_set_inode_ops(struct inode *inode) 591 { 592 if (S_ISREG(inode->i_mode)) { 593 inode->i_op = &ufs_file_inode_operations; 594 inode->i_fop = &ufs_file_operations; 595 inode->i_mapping->a_ops = &ufs_aops; 596 } else if (S_ISDIR(inode->i_mode)) { 597 inode->i_op = &ufs_dir_inode_operations; 598 inode->i_fop = &ufs_dir_operations; 599 inode->i_mapping->a_ops = &ufs_aops; 600 } else if (S_ISLNK(inode->i_mode)) { 601 if (!inode->i_blocks) 602 inode->i_op = &ufs_fast_symlink_inode_operations; 603 else { 604 inode->i_op = &page_symlink_inode_operations; 605 inode->i_mapping->a_ops = &ufs_aops; 606 } 607 } else 608 init_special_inode(inode, inode->i_mode, 609 ufs_get_inode_dev(inode->i_sb, UFS_I(inode))); 610 } 611 612 static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode) 613 { 614 struct ufs_inode_info *ufsi = UFS_I(inode); 615 struct super_block *sb = inode->i_sb; 616 mode_t mode; 617 618 /* 619 * Copy data to the in-core inode. 620 */ 621 inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); 622 inode->i_nlink = fs16_to_cpu(sb, ufs_inode->ui_nlink); 623 if (inode->i_nlink == 0) { 624 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 625 return -1; 626 } 627 628 /* 629 * Linux now has 32-bit uid and gid, so we can support EFT. 630 */ 631 inode->i_uid = ufs_get_inode_uid(sb, ufs_inode); 632 inode->i_gid = ufs_get_inode_gid(sb, ufs_inode); 633 634 inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); 635 inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); 636 inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); 637 inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); 638 inode->i_mtime.tv_nsec = 0; 639 inode->i_atime.tv_nsec = 0; 640 inode->i_ctime.tv_nsec = 0; 641 inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); 642 inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen); 643 ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); 644 ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 645 ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 646 647 648 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 649 memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr, 650 sizeof(ufs_inode->ui_u2.ui_addr)); 651 } else { 652 memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink, 653 sizeof(ufs_inode->ui_u2.ui_symlink) - 1); 654 ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0; 655 } 656 return 0; 657 } 658 659 static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode) 660 { 661 struct ufs_inode_info *ufsi = UFS_I(inode); 662 struct super_block *sb = inode->i_sb; 663 mode_t mode; 664 665 UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino); 666 /* 667 * Copy data to the in-core inode. 668 */ 669 inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); 670 inode->i_nlink = fs16_to_cpu(sb, ufs2_inode->ui_nlink); 671 if (inode->i_nlink == 0) { 672 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 673 return -1; 674 } 675 676 /* 677 * Linux now has 32-bit uid and gid, so we can support EFT. 678 */ 679 inode->i_uid = fs32_to_cpu(sb, ufs2_inode->ui_uid); 680 inode->i_gid = fs32_to_cpu(sb, ufs2_inode->ui_gid); 681 682 inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); 683 inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime); 684 inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime); 685 inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime); 686 inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec); 687 inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec); 688 inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec); 689 inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); 690 inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen); 691 ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags); 692 /* 693 ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 694 ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 695 */ 696 697 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 698 memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr, 699 sizeof(ufs2_inode->ui_u2.ui_addr)); 700 } else { 701 memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink, 702 sizeof(ufs2_inode->ui_u2.ui_symlink) - 1); 703 ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0; 704 } 705 return 0; 706 } 707 708 struct inode *ufs_iget(struct super_block *sb, unsigned long ino) 709 { 710 struct ufs_inode_info *ufsi; 711 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 712 struct buffer_head * bh; 713 struct inode *inode; 714 int err; 715 716 UFSD("ENTER, ino %lu\n", ino); 717 718 if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) { 719 ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n", 720 ino); 721 return ERR_PTR(-EIO); 722 } 723 724 inode = iget_locked(sb, ino); 725 if (!inode) 726 return ERR_PTR(-ENOMEM); 727 if (!(inode->i_state & I_NEW)) 728 return inode; 729 730 ufsi = UFS_I(inode); 731 732 bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); 733 if (!bh) { 734 ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n", 735 inode->i_ino); 736 goto bad_inode; 737 } 738 if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { 739 struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 740 741 err = ufs2_read_inode(inode, 742 ufs2_inode + ufs_inotofsbo(inode->i_ino)); 743 } else { 744 struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data; 745 746 err = ufs1_read_inode(inode, 747 ufs_inode + ufs_inotofsbo(inode->i_ino)); 748 } 749 750 if (err) 751 goto bad_inode; 752 inode->i_version++; 753 ufsi->i_lastfrag = 754 (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; 755 ufsi->i_dir_start_lookup = 0; 756 ufsi->i_osync = 0; 757 758 ufs_set_inode_ops(inode); 759 760 brelse(bh); 761 762 UFSD("EXIT\n"); 763 unlock_new_inode(inode); 764 return inode; 765 766 bad_inode: 767 iget_failed(inode); 768 return ERR_PTR(-EIO); 769 } 770 771 static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode) 772 { 773 struct super_block *sb = inode->i_sb; 774 struct ufs_inode_info *ufsi = UFS_I(inode); 775 776 ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 777 ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 778 779 ufs_set_inode_uid(sb, ufs_inode, inode->i_uid); 780 ufs_set_inode_gid(sb, ufs_inode, inode->i_gid); 781 782 ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 783 ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); 784 ufs_inode->ui_atime.tv_usec = 0; 785 ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); 786 ufs_inode->ui_ctime.tv_usec = 0; 787 ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); 788 ufs_inode->ui_mtime.tv_usec = 0; 789 ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); 790 ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 791 ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 792 793 if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) { 794 ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow); 795 ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag); 796 } 797 798 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 799 /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 800 ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0]; 801 } else if (inode->i_blocks) { 802 memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data, 803 sizeof(ufs_inode->ui_u2.ui_addr)); 804 } 805 else { 806 memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, 807 sizeof(ufs_inode->ui_u2.ui_symlink)); 808 } 809 810 if (!inode->i_nlink) 811 memset (ufs_inode, 0, sizeof(struct ufs_inode)); 812 } 813 814 static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode) 815 { 816 struct super_block *sb = inode->i_sb; 817 struct ufs_inode_info *ufsi = UFS_I(inode); 818 819 UFSD("ENTER\n"); 820 ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 821 ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 822 823 ufs_inode->ui_uid = cpu_to_fs32(sb, inode->i_uid); 824 ufs_inode->ui_gid = cpu_to_fs32(sb, inode->i_gid); 825 826 ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 827 ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec); 828 ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec); 829 ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec); 830 ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec); 831 ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec); 832 ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec); 833 834 ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks); 835 ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 836 ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 837 838 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 839 /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 840 ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0]; 841 } else if (inode->i_blocks) { 842 memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data, 843 sizeof(ufs_inode->ui_u2.ui_addr)); 844 } else { 845 memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, 846 sizeof(ufs_inode->ui_u2.ui_symlink)); 847 } 848 849 if (!inode->i_nlink) 850 memset (ufs_inode, 0, sizeof(struct ufs2_inode)); 851 UFSD("EXIT\n"); 852 } 853 854 static int ufs_update_inode(struct inode * inode, int do_sync) 855 { 856 struct super_block *sb = inode->i_sb; 857 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 858 struct buffer_head * bh; 859 860 UFSD("ENTER, ino %lu\n", inode->i_ino); 861 862 if (inode->i_ino < UFS_ROOTINO || 863 inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { 864 ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); 865 return -1; 866 } 867 868 bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); 869 if (!bh) { 870 ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); 871 return -1; 872 } 873 if (uspi->fs_magic == UFS2_MAGIC) { 874 struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 875 876 ufs2_update_inode(inode, 877 ufs2_inode + ufs_inotofsbo(inode->i_ino)); 878 } else { 879 struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data; 880 881 ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); 882 } 883 884 mark_buffer_dirty(bh); 885 if (do_sync) 886 sync_dirty_buffer(bh); 887 brelse (bh); 888 889 UFSD("EXIT\n"); 890 return 0; 891 } 892 893 int ufs_write_inode (struct inode * inode, int wait) 894 { 895 int ret; 896 lock_kernel(); 897 ret = ufs_update_inode (inode, wait); 898 unlock_kernel(); 899 return ret; 900 } 901 902 int ufs_sync_inode (struct inode *inode) 903 { 904 return ufs_update_inode (inode, 1); 905 } 906 907 void ufs_delete_inode (struct inode * inode) 908 { 909 loff_t old_i_size; 910 911 truncate_inode_pages(&inode->i_data, 0); 912 if (is_bad_inode(inode)) 913 goto no_delete; 914 /*UFS_I(inode)->i_dtime = CURRENT_TIME;*/ 915 lock_kernel(); 916 mark_inode_dirty(inode); 917 ufs_update_inode(inode, IS_SYNC(inode)); 918 old_i_size = inode->i_size; 919 inode->i_size = 0; 920 if (inode->i_blocks && ufs_truncate(inode, old_i_size)) 921 ufs_warning(inode->i_sb, __func__, "ufs_truncate failed\n"); 922 ufs_free_inode (inode); 923 unlock_kernel(); 924 return; 925 no_delete: 926 clear_inode(inode); /* We must guarantee clearing of inode... */ 927 } 928