fs/ufs/inode.c

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