Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/fs/ufs/inode.c
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
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/sched.h> 35 #include <linux/stat.h> 36 #include <linux/string.h> 37 #include <linux/locks.h> 38 #include <linux/mm.h> 39 #include <linux/smp_lock.h> 40 41 #include "swab.h" 42 #include "util.h" 43 44 #undef UFS_INODE_DEBUG 45 #undef UFS_INODE_DEBUG_MORE 46 47 #ifdef UFS_INODE_DEBUG 48 #define UFSD(x) printk("(%s, %d), %s: ", __FILE__, __LINE__, __FUNCTION__); printk x; 49 #else 50 #define UFSD(x) 51 #endif 52 53 static int ufs_block_to_path(struct inode *inode, long i_block, int offsets[4]) 54 { 55 struct ufs_sb_private_info *uspi = inode->i_sb->u.ufs_sb.s_uspi; 56 int ptrs = uspi->s_apb; 57 int ptrs_bits = uspi->s_apbshift; 58 const long direct_blocks = UFS_NDADDR, 59 indirect_blocks = ptrs, 60 double_blocks = (1 << (ptrs_bits * 2)); 61 int n = 0; 62 63 if (i_block < 0) { 64 ufs_warning(inode->i_sb, "ufs_block_to_path", "block < 0"); 65 } else if (i_block < direct_blocks) { 66 offsets[n++] = i_block; 67 } else if ((i_block -= direct_blocks) < indirect_blocks) { 68 offsets[n++] = UFS_IND_BLOCK; 69 offsets[n++] = i_block; 70 } else if ((i_block -= indirect_blocks) < double_blocks) { 71 offsets[n++] = UFS_DIND_BLOCK; 72 offsets[n++] = i_block >> ptrs_bits; 73 offsets[n++] = i_block & (ptrs - 1); 74 } else if (((i_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) { 75 offsets[n++] = UFS_TIND_BLOCK; 76 offsets[n++] = i_block >> (ptrs_bits * 2); 77 offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1); 78 offsets[n++] = i_block & (ptrs - 1); 79 } else { 80 ufs_warning(inode->i_sb, "ufs_block_to_path", "block > big"); 81 } 82 return n; 83 } 84 85 int ufs_frag_map(struct inode *inode, int frag) 86 { 87 struct super_block *sb = inode->i_sb; 88 struct ufs_sb_private_info *uspi = sb->u.ufs_sb.s_uspi; 89 int mask = uspi->s_apbmask>>uspi->s_fpbshift; 90 int shift = uspi->s_apbshift-uspi->s_fpbshift; 91 int offsets[4], *p; 92 int depth = ufs_block_to_path(inode, frag >> uspi->s_fpbshift, offsets); 93 int ret = 0; 94 u32 block; 95 96 if (depth == 0) 97 return 0; 98 99 p = offsets; 100 101 lock_kernel(); 102 block = inode->u.ufs_i.i_u1.i_data[*p++]; 103 if (!block) 104 goto out; 105 while (--depth) { 106 struct buffer_head *bh; 107 int n = *p++; 108 109 bh = sb_bread(sb, uspi->s_sbbase + fs32_to_cpu(sb, block)+(n>>shift)); 110 if (!bh) 111 goto out; 112 block = ((u32*) bh->b_data)[n & mask]; 113 brelse (bh); 114 if (!block) 115 goto out; 116 } 117 ret = uspi->s_sbbase + fs32_to_cpu(sb, block) + (frag & uspi->s_fpbmask); 118 out: 119 unlock_kernel(); 120 return ret; 121 } 122 123 static struct buffer_head * ufs_inode_getfrag (struct inode *inode, 124 unsigned int fragment, unsigned int new_fragment, 125 unsigned int required, int *err, int metadata, long *phys, int *new) 126 { 127 struct super_block * sb; 128 struct ufs_sb_private_info * uspi; 129 struct buffer_head * result; 130 unsigned block, blockoff, lastfrag, lastblock, lastblockoff; 131 unsigned tmp, goal; 132 u32 * p, * p2; 133 134 UFSD(("ENTER, ino %lu, fragment %u, new_fragment %u, required %u\n", 135 inode->i_ino, fragment, new_fragment, required)) 136 137 sb = inode->i_sb; 138 uspi = sb->u.ufs_sb.s_uspi; 139 block = ufs_fragstoblks (fragment); 140 blockoff = ufs_fragnum (fragment); 141 p = inode->u.ufs_i.i_u1.i_data + block; 142 goal = 0; 143 144 repeat: 145 tmp = fs32_to_cpu(sb, *p); 146 lastfrag = inode->u.ufs_i.i_lastfrag; 147 if (tmp && fragment < lastfrag) { 148 if (metadata) { 149 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 150 if (tmp == fs32_to_cpu(sb, *p)) { 151 UFSD(("EXIT, result %u\n", tmp + blockoff)) 152 return result; 153 } 154 brelse (result); 155 goto repeat; 156 } else { 157 *phys = tmp; 158 return NULL; 159 } 160 } 161 162 lastblock = ufs_fragstoblks (lastfrag); 163 lastblockoff = ufs_fragnum (lastfrag); 164 /* 165 * We will extend file into new block beyond last allocated block 166 */ 167 if (lastblock < block) { 168 /* 169 * We must reallocate last allocated block 170 */ 171 if (lastblockoff) { 172 p2 = inode->u.ufs_i.i_u1.i_data + lastblock; 173 tmp = ufs_new_fragments (inode, p2, lastfrag, 174 fs32_to_cpu(sb, *p2), uspi->s_fpb - lastblockoff, err); 175 if (!tmp) { 176 if (lastfrag != inode->u.ufs_i.i_lastfrag) 177 goto repeat; 178 else 179 return NULL; 180 } 181 lastfrag = inode->u.ufs_i.i_lastfrag; 182 183 } 184 goal = fs32_to_cpu(sb, inode->u.ufs_i.i_u1.i_data[lastblock]) + uspi->s_fpb; 185 tmp = ufs_new_fragments (inode, p, fragment - blockoff, 186 goal, required + blockoff, err); 187 } 188 /* 189 * We will extend last allocated block 190 */ 191 else if (lastblock == block) { 192 tmp = ufs_new_fragments (inode, p, fragment - (blockoff - lastblockoff), 193 fs32_to_cpu(sb, *p), required + (blockoff - lastblockoff), err); 194 } 195 /* 196 * We will allocate new block before last allocated block 197 */ 198 else /* (lastblock > block) */ { 199 if (lastblock && (tmp = fs32_to_cpu(sb, inode->u.ufs_i.i_u1.i_data[lastblock-1]))) 200 goal = tmp + uspi->s_fpb; 201 tmp = ufs_new_fragments (inode, p, fragment - blockoff, 202 goal, uspi->s_fpb, err); 203 } 204 if (!tmp) { 205 if ((!blockoff && *p) || 206 (blockoff && lastfrag != inode->u.ufs_i.i_lastfrag)) 207 goto repeat; 208 *err = -ENOSPC; 209 return NULL; 210 } 211 212 /* The nullification of framgents done in ufs/balloc.c is 213 * something I don't have the stomache to move into here right 214 * now. -DaveM 215 */ 216 if (metadata) { 217 result = sb_getblk(inode->i_sb, tmp + blockoff); 218 } else { 219 *phys = tmp; 220 result = NULL; 221 *err = 0; 222 *new = 1; 223 } 224 225 inode->i_ctime = CURRENT_TIME; 226 if (IS_SYNC(inode)) 227 ufs_sync_inode (inode); 228 mark_inode_dirty(inode); 229 UFSD(("EXIT, result %u\n", tmp + blockoff)) 230 return result; 231 } 232 233 static struct buffer_head * ufs_block_getfrag (struct inode *inode, 234 struct buffer_head *bh, unsigned int fragment, unsigned int new_fragment, 235 unsigned int blocksize, int * err, int metadata, long *phys, int *new) 236 { 237 struct super_block * sb; 238 struct ufs_sb_private_info * uspi; 239 struct buffer_head * result; 240 unsigned tmp, goal, block, blockoff; 241 u32 * p; 242 243 sb = inode->i_sb; 244 uspi = sb->u.ufs_sb.s_uspi; 245 block = ufs_fragstoblks (fragment); 246 blockoff = ufs_fragnum (fragment); 247 248 UFSD(("ENTER, ino %lu, fragment %u, new_fragment %u\n", inode->i_ino, fragment, new_fragment)) 249 250 result = NULL; 251 if (!bh) 252 goto out; 253 if (!buffer_uptodate(bh)) { 254 ll_rw_block (READ, 1, &bh); 255 wait_on_buffer (bh); 256 if (!buffer_uptodate(bh)) 257 goto out; 258 } 259 260 p = (u32 *) bh->b_data + block; 261 repeat: 262 tmp = fs32_to_cpu(sb, *p); 263 if (tmp) { 264 if (metadata) { 265 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 266 if (tmp == fs32_to_cpu(sb, *p)) 267 goto out; 268 brelse (result); 269 goto repeat; 270 } else { 271 *phys = tmp; 272 goto out; 273 } 274 } 275 276 if (block && (tmp = fs32_to_cpu(sb, ((u32*)bh->b_data)[block-1]) + uspi->s_fpb)) 277 goal = tmp + uspi->s_fpb; 278 else 279 goal = bh->b_blocknr + uspi->s_fpb; 280 tmp = ufs_new_fragments (inode, p, ufs_blknum(new_fragment), goal, uspi->s_fpb, err); 281 if (!tmp) { 282 if (fs32_to_cpu(sb, *p)) 283 goto repeat; 284 goto out; 285 } 286 287 /* The nullification of framgents done in ufs/balloc.c is 288 * something I don't have the stomache to move into here right 289 * now. -DaveM 290 */ 291 if (metadata) { 292 result = sb_getblk(sb, tmp + blockoff); 293 } else { 294 *phys = tmp; 295 *new = 1; 296 } 297 298 mark_buffer_dirty(bh); 299 if (IS_SYNC(inode)) { 300 ll_rw_block (WRITE, 1, &bh); 301 wait_on_buffer (bh); 302 } 303 inode->i_ctime = CURRENT_TIME; 304 mark_inode_dirty(inode); 305 out: 306 brelse (bh); 307 UFSD(("EXIT, result %u\n", tmp + blockoff)) 308 return result; 309 } 310 311 static int ufs_getfrag_block (struct inode *inode, long fragment, struct buffer_head *bh_result, int create) 312 { 313 struct super_block * sb; 314 struct ufs_sb_private_info * uspi; 315 struct buffer_head * bh; 316 int ret, err, new; 317 unsigned long ptr, phys; 318 319 sb = inode->i_sb; 320 uspi = sb->u.ufs_sb.s_uspi; 321 322 if (!create) { 323 phys = ufs_frag_map(inode, fragment); 324 if (phys) { 325 bh_result->b_dev = inode->i_dev; 326 bh_result->b_blocknr = phys; 327 bh_result->b_state |= (1UL << BH_Mapped); 328 } 329 return 0; 330 } 331 332 err = -EIO; 333 new = 0; 334 ret = 0; 335 bh = NULL; 336 337 lock_kernel(); 338 339 UFSD(("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment)) 340 if (fragment < 0) 341 goto abort_negative; 342 if (fragment > 343 ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb) 344 << uspi->s_fpbshift)) 345 goto abort_too_big; 346 347 err = 0; 348 ptr = fragment; 349 350 /* 351 * ok, these macros clean the logic up a bit and make 352 * it much more readable: 353 */ 354 #define GET_INODE_DATABLOCK(x) \ 355 ufs_inode_getfrag(inode, x, fragment, 1, &err, 0, &phys, &new) 356 #define GET_INODE_PTR(x) \ 357 ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, 1, NULL, NULL) 358 #define GET_INDIRECT_DATABLOCK(x) \ 359 ufs_block_getfrag(inode, bh, x, fragment, sb->s_blocksize, \ 360 &err, 0, &phys, &new); 361 #define GET_INDIRECT_PTR(x) \ 362 ufs_block_getfrag(inode, bh, x, fragment, sb->s_blocksize, \ 363 &err, 1, NULL, NULL); 364 365 if (ptr < UFS_NDIR_FRAGMENT) { 366 bh = GET_INODE_DATABLOCK(ptr); 367 goto out; 368 } 369 ptr -= UFS_NDIR_FRAGMENT; 370 if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) { 371 bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift)); 372 goto get_indirect; 373 } 374 ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift); 375 if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) { 376 bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift)); 377 goto get_double; 378 } 379 ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift); 380 bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift)); 381 bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask); 382 get_double: 383 bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask); 384 get_indirect: 385 bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask); 386 387 #undef GET_INODE_DATABLOCK 388 #undef GET_INODE_PTR 389 #undef GET_INDIRECT_DATABLOCK 390 #undef GET_INDIRECT_PTR 391 392 out: 393 if (err) 394 goto abort; 395 bh_result->b_dev = inode->i_dev; 396 bh_result->b_blocknr = phys; 397 bh_result->b_state |= (1UL << BH_Mapped); 398 if (new) 399 bh_result->b_state |= (1UL << BH_New); 400 abort: 401 unlock_kernel(); 402 return err; 403 404 abort_negative: 405 ufs_warning(sb, "ufs_get_block", "block < 0"); 406 goto abort; 407 408 abort_too_big: 409 ufs_warning(sb, "ufs_get_block", "block > big"); 410 goto abort; 411 } 412 413 struct buffer_head *ufs_getfrag(struct inode *inode, unsigned int fragment, 414 int create, int *err) 415 { 416 struct buffer_head dummy; 417 int error; 418 419 dummy.b_state = 0; 420 dummy.b_blocknr = -1000; 421 error = ufs_getfrag_block(inode, fragment, &dummy, create); 422 *err = error; 423 if (!error && buffer_mapped(&dummy)) { 424 struct buffer_head *bh; 425 bh = sb_getblk(inode->i_sb, dummy.b_blocknr); 426 if (buffer_new(&dummy)) { 427 memset(bh->b_data, 0, inode->i_sb->s_blocksize); 428 mark_buffer_uptodate(bh, 1); 429 mark_buffer_dirty(bh); 430 } 431 return bh; 432 } 433 return NULL; 434 } 435 436 struct buffer_head * ufs_bread (struct inode * inode, unsigned fragment, 437 int create, int * err) 438 { 439 struct buffer_head * bh; 440 441 UFSD(("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment)) 442 bh = ufs_getfrag (inode, fragment, create, err); 443 if (!bh || buffer_uptodate(bh)) 444 return bh; 445 ll_rw_block (READ, 1, &bh); 446 wait_on_buffer (bh); 447 if (buffer_uptodate(bh)) 448 return bh; 449 brelse (bh); 450 *err = -EIO; 451 return NULL; 452 } 453 454 static int ufs_writepage(struct page *page) 455 { 456 return block_write_full_page(page,ufs_getfrag_block); 457 } 458 static int ufs_readpage(struct file *file, struct page *page) 459 { 460 return block_read_full_page(page,ufs_getfrag_block); 461 } 462 static int ufs_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to) 463 { 464 return block_prepare_write(page,from,to,ufs_getfrag_block); 465 } 466 static int ufs_bmap(struct address_space *mapping, long block) 467 { 468 return generic_block_bmap(mapping,block,ufs_getfrag_block); 469 } 470 struct address_space_operations ufs_aops = { 471 readpage: ufs_readpage, 472 writepage: ufs_writepage, 473 sync_page: block_sync_page, 474 prepare_write: ufs_prepare_write, 475 commit_write: generic_commit_write, 476 bmap: ufs_bmap 477 }; 478 479 void ufs_read_inode (struct inode * inode) 480 { 481 struct super_block * sb; 482 struct ufs_sb_private_info * uspi; 483 struct ufs_inode * ufs_inode; 484 struct buffer_head * bh; 485 unsigned i; 486 unsigned flags; 487 488 UFSD(("ENTER, ino %lu\n", inode->i_ino)) 489 490 sb = inode->i_sb; 491 uspi = sb->u.ufs_sb.s_uspi; 492 flags = sb->u.ufs_sb.s_flags; 493 494 if (inode->i_ino < UFS_ROOTINO || 495 inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { 496 ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); 497 goto bad_inode; 498 } 499 500 bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); 501 if (!bh) { 502 ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); 503 goto bad_inode; 504 } 505 ufs_inode = (struct ufs_inode *) (bh->b_data + sizeof(struct ufs_inode) * ufs_inotofsbo(inode->i_ino)); 506 507 /* 508 * Copy data to the in-core inode. 509 */ 510 inode->i_mode = fs16_to_cpu(sb, ufs_inode->ui_mode); 511 inode->i_nlink = fs16_to_cpu(sb, ufs_inode->ui_nlink); 512 if (inode->i_nlink == 0) 513 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 514 515 /* 516 * Linux now has 32-bit uid and gid, so we can support EFT. 517 */ 518 inode->i_uid = ufs_get_inode_uid(sb, ufs_inode); 519 inode->i_gid = ufs_get_inode_gid(sb, ufs_inode); 520 521 inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); 522 inode->i_atime = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); 523 inode->i_ctime = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); 524 inode->i_mtime = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); 525 inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); 526 inode->i_blksize = PAGE_SIZE; /* This is the optimal IO size (for stat) */ 527 inode->i_version = ++event; 528 529 inode->u.ufs_i.i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); 530 inode->u.ufs_i.i_gen = fs32_to_cpu(sb, ufs_inode->ui_gen); 531 inode->u.ufs_i.i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 532 inode->u.ufs_i.i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 533 inode->u.ufs_i.i_lastfrag = (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; 534 535 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) 536 ; 537 else if (inode->i_blocks) { 538 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) 539 inode->u.ufs_i.i_u1.i_data[i] = ufs_inode->ui_u2.ui_addr.ui_db[i]; 540 } 541 else { 542 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) 543 inode->u.ufs_i.i_u1.i_symlink[i] = ufs_inode->ui_u2.ui_symlink[i]; 544 } 545 546 547 if (S_ISREG(inode->i_mode)) { 548 inode->i_op = &ufs_file_inode_operations; 549 inode->i_fop = &ufs_file_operations; 550 inode->i_mapping->a_ops = &ufs_aops; 551 } else if (S_ISDIR(inode->i_mode)) { 552 inode->i_op = &ufs_dir_inode_operations; 553 inode->i_fop = &ufs_dir_operations; 554 } else if (S_ISLNK(inode->i_mode)) { 555 if (!inode->i_blocks) 556 inode->i_op = &ufs_fast_symlink_inode_operations; 557 else { 558 inode->i_op = &page_symlink_inode_operations; 559 inode->i_mapping->a_ops = &ufs_aops; 560 } 561 } else 562 init_special_inode(inode, inode->i_mode, 563 fs32_to_cpu(sb, ufs_inode->ui_u2.ui_addr.ui_db[0])); 564 565 brelse (bh); 566 567 UFSD(("EXIT\n")) 568 return; 569 570 bad_inode: 571 make_bad_inode(inode); 572 return; 573 } 574 575 static int ufs_update_inode(struct inode * inode, int do_sync) 576 { 577 struct super_block * sb; 578 struct ufs_sb_private_info * uspi; 579 struct buffer_head * bh; 580 struct ufs_inode * ufs_inode; 581 unsigned i; 582 unsigned flags; 583 584 UFSD(("ENTER, ino %lu\n", inode->i_ino)) 585 586 sb = inode->i_sb; 587 uspi = sb->u.ufs_sb.s_uspi; 588 flags = sb->u.ufs_sb.s_flags; 589 590 if (inode->i_ino < UFS_ROOTINO || 591 inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { 592 ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); 593 return -1; 594 } 595 596 bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); 597 if (!bh) { 598 ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); 599 return -1; 600 } 601 ufs_inode = (struct ufs_inode *) (bh->b_data + ufs_inotofsbo(inode->i_ino) * sizeof(struct ufs_inode)); 602 603 ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 604 ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 605 606 ufs_set_inode_uid(sb, ufs_inode, inode->i_uid); 607 ufs_set_inode_gid(sb, ufs_inode, inode->i_gid); 608 609 ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 610 ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime); 611 ufs_inode->ui_atime.tv_usec = 0; 612 ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime); 613 ufs_inode->ui_ctime.tv_usec = 0; 614 ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime); 615 ufs_inode->ui_mtime.tv_usec = 0; 616 ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); 617 ufs_inode->ui_flags = cpu_to_fs32(sb, inode->u.ufs_i.i_flags); 618 ufs_inode->ui_gen = cpu_to_fs32(sb, inode->u.ufs_i.i_gen); 619 620 if ((flags & UFS_UID_MASK) == UFS_UID_EFT) { 621 ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, inode->u.ufs_i.i_shadow); 622 ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, inode->u.ufs_i.i_oeftflag); 623 } 624 625 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) 626 ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, kdev_t_to_nr(inode->i_rdev)); 627 else if (inode->i_blocks) { 628 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) 629 ufs_inode->ui_u2.ui_addr.ui_db[i] = inode->u.ufs_i.i_u1.i_data[i]; 630 } 631 else { 632 for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) 633 ufs_inode->ui_u2.ui_symlink[i] = inode->u.ufs_i.i_u1.i_symlink[i]; 634 } 635 636 if (!inode->i_nlink) 637 memset (ufs_inode, 0, sizeof(struct ufs_inode)); 638 639 mark_buffer_dirty(bh); 640 if (do_sync) { 641 ll_rw_block (WRITE, 1, &bh); 642 wait_on_buffer (bh); 643 } 644 brelse (bh); 645 646 UFSD(("EXIT\n")) 647 return 0; 648 } 649 650 void ufs_write_inode (struct inode * inode, int wait) 651 { 652 lock_kernel(); 653 ufs_update_inode (inode, wait); 654 unlock_kernel(); 655 } 656 657 int ufs_sync_inode (struct inode *inode) 658 { 659 return ufs_update_inode (inode, 1); 660 } 661 662 void ufs_delete_inode (struct inode * inode) 663 { 664 /*inode->u.ufs_i.i_dtime = CURRENT_TIME;*/ 665 lock_kernel(); 666 mark_inode_dirty(inode); 667 ufs_update_inode(inode, IS_SYNC(inode)); 668 inode->i_size = 0; 669 if (inode->i_blocks) 670 ufs_truncate (inode); 671 ufs_free_inode (inode); 672 unlock_kernel(); 673 }
Cache object: 4f4953dfd888625881595df4736a6b88
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]