Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Adrian Bunk | 138bb68 | 2006-06-25 05:47:32 -0700 | [diff] [blame] | 44 | static u64 ufs_frag_map(struct inode *inode, sector_t frag); |
| 45 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 57 | UFSD("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Adrian Bunk | 138bb68 | 2006-06-25 05:47:32 -0700 | [diff] [blame] | 85 | static u64 ufs_frag_map(struct inode *inode, sector_t frag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 100 | UFSD(": frag = %llu depth = %d\n", (unsigned long long)frag, depth); |
Andrew Morton | 7256d81 | 2006-06-29 02:24:29 -0700 | [diff] [blame] | 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); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 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, unsigned int fragment, |
| 174 | sector_t new_fragment, unsigned int required, int *err, |
| 175 | long *phys, int *new, struct page *locked_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | { |
| 177 | struct ufs_inode_info *ufsi = UFS_I(inode); |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 178 | struct super_block *sb = inode->i_sb; |
| 179 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | struct buffer_head * result; |
| 181 | unsigned block, blockoff, lastfrag, lastblock, lastblockoff; |
| 182 | unsigned tmp, goal; |
| 183 | __fs32 * p, * p2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 185 | UFSD("ENTER, ino %lu, fragment %u, new_fragment %llu, required %u, " |
| 186 | "metadata %d\n", inode->i_ino, fragment, |
| 187 | (unsigned long long)new_fragment, required, !phys); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 = ufsi->i_u1.i_data + block; |
| 197 | goal = 0; |
| 198 | |
| 199 | repeat: |
| 200 | tmp = fs32_to_cpu(sb, *p); |
| 201 | lastfrag = ufsi->i_lastfrag; |
| 202 | if (tmp && fragment < lastfrag) { |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 203 | if (!phys) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); |
| 205 | if (tmp == fs32_to_cpu(sb, *p)) { |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 206 | UFSD("EXIT, result %u\n", tmp + blockoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | return result; |
| 208 | } |
| 209 | brelse (result); |
| 210 | goto repeat; |
| 211 | } else { |
Evgeniy Dushistov | c9a27b5 | 2006-06-25 05:47:19 -0700 | [diff] [blame] | 212 | *phys = tmp + blockoff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | return NULL; |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | lastblock = ufs_fragstoblks (lastfrag); |
| 218 | lastblockoff = ufs_fragnum (lastfrag); |
| 219 | /* |
| 220 | * We will extend file into new block beyond last allocated block |
| 221 | */ |
| 222 | if (lastblock < block) { |
| 223 | /* |
| 224 | * We must reallocate last allocated block |
| 225 | */ |
| 226 | if (lastblockoff) { |
| 227 | p2 = ufsi->i_u1.i_data + lastblock; |
| 228 | tmp = ufs_new_fragments (inode, p2, lastfrag, |
Evgeniy Dushistov | 6ef4d6b | 2006-06-25 05:47:20 -0700 | [diff] [blame] | 229 | fs32_to_cpu(sb, *p2), uspi->s_fpb - lastblockoff, |
| 230 | err, locked_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | if (!tmp) { |
| 232 | if (lastfrag != ufsi->i_lastfrag) |
| 233 | goto repeat; |
| 234 | else |
| 235 | return NULL; |
| 236 | } |
| 237 | lastfrag = ufsi->i_lastfrag; |
| 238 | |
| 239 | } |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 240 | tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock]); |
| 241 | if (tmp) |
| 242 | goal = tmp + uspi->s_fpb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | tmp = ufs_new_fragments (inode, p, fragment - blockoff, |
Evgeniy Dushistov | 6ef4d6b | 2006-06-25 05:47:20 -0700 | [diff] [blame] | 244 | goal, required + blockoff, |
Evgeniy Dushistov | a685e26 | 2007-01-29 13:19:54 -0800 | [diff] [blame^] | 245 | err, |
| 246 | phys != NULL ? locked_page : NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | } |
| 248 | /* |
| 249 | * We will extend last allocated block |
| 250 | */ |
| 251 | else if (lastblock == block) { |
Evgeniy Dushistov | 6ef4d6b | 2006-06-25 05:47:20 -0700 | [diff] [blame] | 252 | tmp = ufs_new_fragments(inode, p, fragment - (blockoff - lastblockoff), |
| 253 | fs32_to_cpu(sb, *p), required + (blockoff - lastblockoff), |
Evgeniy Dushistov | a685e26 | 2007-01-29 13:19:54 -0800 | [diff] [blame^] | 254 | err, phys != NULL ? locked_page : NULL); |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 255 | } else /* (lastblock > block) */ { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | /* |
| 257 | * We will allocate new block before last allocated block |
| 258 | */ |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 259 | if (block) { |
| 260 | tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[block-1]); |
| 261 | if (tmp) |
| 262 | goal = tmp + uspi->s_fpb; |
| 263 | } |
Evgeniy Dushistov | 6ef4d6b | 2006-06-25 05:47:20 -0700 | [diff] [blame] | 264 | tmp = ufs_new_fragments(inode, p, fragment - blockoff, |
Evgeniy Dushistov | a685e26 | 2007-01-29 13:19:54 -0800 | [diff] [blame^] | 265 | goal, uspi->s_fpb, err, |
| 266 | phys != NULL ? locked_page : NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | } |
| 268 | if (!tmp) { |
| 269 | if ((!blockoff && *p) || |
| 270 | (blockoff && lastfrag != ufsi->i_lastfrag)) |
| 271 | goto repeat; |
| 272 | *err = -ENOSPC; |
| 273 | return NULL; |
| 274 | } |
| 275 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 276 | if (!phys) { |
Evgeniy Dushistov | d63b709 | 2007-01-05 16:37:04 -0800 | [diff] [blame] | 277 | result = sb_getblk(sb, tmp + blockoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | } else { |
Evgeniy Dushistov | c9a27b5 | 2006-06-25 05:47:19 -0700 | [diff] [blame] | 279 | *phys = tmp + blockoff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | result = NULL; |
| 281 | *err = 0; |
| 282 | *new = 1; |
| 283 | } |
| 284 | |
| 285 | inode->i_ctime = CURRENT_TIME_SEC; |
| 286 | if (IS_SYNC(inode)) |
| 287 | ufs_sync_inode (inode); |
| 288 | mark_inode_dirty(inode); |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 289 | UFSD("EXIT, result %u\n", tmp + blockoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | return result; |
| 291 | |
| 292 | /* This part : To be implemented .... |
| 293 | Required only for writing, not required for READ-ONLY. |
| 294 | ufs2: |
| 295 | |
| 296 | u2_block = ufs_fragstoblks(fragment); |
| 297 | u2_blockoff = ufs_fragnum(fragment); |
| 298 | p = ufsi->i_u1.u2_i_data + block; |
| 299 | goal = 0; |
| 300 | |
| 301 | repeat2: |
| 302 | tmp = fs32_to_cpu(sb, *p); |
| 303 | lastfrag = ufsi->i_lastfrag; |
| 304 | |
| 305 | */ |
| 306 | } |
| 307 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 308 | /** |
| 309 | * ufs_inode_getblock() - allocate new block |
| 310 | * @inode - pointer to inode |
| 311 | * @bh - pointer to block which hold "pointer" to new allocated block |
| 312 | * @fragment - number of `fragment' which hold pointer |
| 313 | * to new allocated block |
| 314 | * @new_fragment - number of new allocated fragment |
| 315 | * (block will hold this fragment and also uspi->s_fpb-1) |
| 316 | * @err - see ufs_inode_getfrag() |
| 317 | * @phys - see ufs_inode_getfrag() |
| 318 | * @new - see ufs_inode_getfrag() |
| 319 | * @locked_page - see ufs_inode_getfrag() |
| 320 | */ |
| 321 | static struct buffer_head * |
| 322 | ufs_inode_getblock(struct inode *inode, struct buffer_head *bh, |
| 323 | unsigned int fragment, sector_t new_fragment, int *err, |
| 324 | long *phys, int *new, struct page *locked_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | { |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 326 | struct super_block *sb = inode->i_sb; |
| 327 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | struct buffer_head * result; |
| 329 | unsigned tmp, goal, block, blockoff; |
| 330 | __fs32 * p; |
| 331 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | block = ufs_fragstoblks (fragment); |
| 333 | blockoff = ufs_fragnum (fragment); |
| 334 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 335 | UFSD("ENTER, ino %lu, fragment %u, new_fragment %llu, metadata %d\n", |
| 336 | inode->i_ino, fragment, (unsigned long long)new_fragment, !phys); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | |
| 338 | result = NULL; |
| 339 | if (!bh) |
| 340 | goto out; |
| 341 | if (!buffer_uptodate(bh)) { |
| 342 | ll_rw_block (READ, 1, &bh); |
| 343 | wait_on_buffer (bh); |
| 344 | if (!buffer_uptodate(bh)) |
| 345 | goto out; |
| 346 | } |
| 347 | |
| 348 | p = (__fs32 *) bh->b_data + block; |
| 349 | repeat: |
| 350 | tmp = fs32_to_cpu(sb, *p); |
| 351 | if (tmp) { |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 352 | if (!phys) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); |
| 354 | if (tmp == fs32_to_cpu(sb, *p)) |
| 355 | goto out; |
| 356 | brelse (result); |
| 357 | goto repeat; |
| 358 | } else { |
Evgeniy Dushistov | c9a27b5 | 2006-06-25 05:47:19 -0700 | [diff] [blame] | 359 | *phys = tmp + blockoff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | goto out; |
| 361 | } |
| 362 | } |
| 363 | |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 364 | if (block && (tmp = fs32_to_cpu(sb, ((__fs32*)bh->b_data)[block-1]))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | goal = tmp + uspi->s_fpb; |
| 366 | else |
| 367 | goal = bh->b_blocknr + uspi->s_fpb; |
Evgeniy Dushistov | 6ef4d6b | 2006-06-25 05:47:20 -0700 | [diff] [blame] | 368 | tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, |
| 369 | uspi->s_fpb, err, locked_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | if (!tmp) { |
| 371 | if (fs32_to_cpu(sb, *p)) |
| 372 | goto repeat; |
| 373 | goto out; |
| 374 | } |
| 375 | |
Evgeniy Dushistov | c9a27b5 | 2006-06-25 05:47:19 -0700 | [diff] [blame] | 376 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 377 | if (!phys) { |
Evgeniy Dushistov | d63b709 | 2007-01-05 16:37:04 -0800 | [diff] [blame] | 378 | result = sb_getblk(sb, tmp + blockoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | } else { |
Evgeniy Dushistov | c9a27b5 | 2006-06-25 05:47:19 -0700 | [diff] [blame] | 380 | *phys = tmp + blockoff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | *new = 1; |
| 382 | } |
| 383 | |
| 384 | mark_buffer_dirty(bh); |
| 385 | if (IS_SYNC(inode)) |
| 386 | sync_dirty_buffer(bh); |
| 387 | inode->i_ctime = CURRENT_TIME_SEC; |
| 388 | mark_inode_dirty(inode); |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 389 | UFSD("result %u\n", tmp + blockoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | out: |
| 391 | brelse (bh); |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 392 | UFSD("EXIT\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | return result; |
| 394 | } |
| 395 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 396 | /** |
| 397 | * ufs_getfrag_bloc() - `get_block_t' function, interface between UFS and |
| 398 | * readpage, writepage and so on |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | */ |
| 400 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 401 | int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | { |
| 403 | struct super_block * sb = inode->i_sb; |
| 404 | struct ufs_sb_private_info * uspi = UFS_SB(sb)->s_uspi; |
| 405 | struct buffer_head * bh; |
| 406 | int ret, err, new; |
| 407 | unsigned long ptr,phys; |
| 408 | u64 phys64 = 0; |
| 409 | |
| 410 | if (!create) { |
| 411 | phys64 = ufs_frag_map(inode, fragment); |
Andrew Morton | 7256d81 | 2006-06-29 02:24:29 -0700 | [diff] [blame] | 412 | UFSD("phys64 = %llu\n", (unsigned long long)phys64); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | if (phys64) |
| 414 | map_bh(bh_result, sb, phys64); |
| 415 | return 0; |
| 416 | } |
| 417 | |
| 418 | /* This code entered only while writing ....? */ |
| 419 | |
| 420 | err = -EIO; |
| 421 | new = 0; |
| 422 | ret = 0; |
| 423 | bh = NULL; |
| 424 | |
| 425 | lock_kernel(); |
| 426 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 427 | UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | if (fragment < 0) |
| 429 | goto abort_negative; |
| 430 | if (fragment > |
| 431 | ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb) |
| 432 | << uspi->s_fpbshift)) |
| 433 | goto abort_too_big; |
| 434 | |
| 435 | err = 0; |
| 436 | ptr = fragment; |
| 437 | |
| 438 | /* |
| 439 | * ok, these macros clean the logic up a bit and make |
| 440 | * it much more readable: |
| 441 | */ |
| 442 | #define GET_INODE_DATABLOCK(x) \ |
Evgeniy Dushistov | a685e26 | 2007-01-29 13:19:54 -0800 | [diff] [blame^] | 443 | ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new,\ |
| 444 | bh_result->b_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | #define GET_INODE_PTR(x) \ |
Evgeniy Dushistov | a685e26 | 2007-01-29 13:19:54 -0800 | [diff] [blame^] | 446 | ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL,\ |
| 447 | bh_result->b_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | #define GET_INDIRECT_DATABLOCK(x) \ |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 449 | ufs_inode_getblock(inode, bh, x, fragment, \ |
Evgeniy Dushistov | d63b709 | 2007-01-05 16:37:04 -0800 | [diff] [blame] | 450 | &err, &phys, &new, bh_result->b_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | #define GET_INDIRECT_PTR(x) \ |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 452 | ufs_inode_getblock(inode, bh, x, fragment, \ |
Evgeniy Dushistov | d63b709 | 2007-01-05 16:37:04 -0800 | [diff] [blame] | 453 | &err, NULL, NULL, NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | |
| 455 | if (ptr < UFS_NDIR_FRAGMENT) { |
| 456 | bh = GET_INODE_DATABLOCK(ptr); |
| 457 | goto out; |
| 458 | } |
| 459 | ptr -= UFS_NDIR_FRAGMENT; |
| 460 | if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) { |
| 461 | bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift)); |
| 462 | goto get_indirect; |
| 463 | } |
| 464 | ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift); |
| 465 | if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) { |
| 466 | bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift)); |
| 467 | goto get_double; |
| 468 | } |
| 469 | ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift); |
| 470 | bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift)); |
| 471 | bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask); |
| 472 | get_double: |
| 473 | bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask); |
| 474 | get_indirect: |
| 475 | bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask); |
| 476 | |
| 477 | #undef GET_INODE_DATABLOCK |
| 478 | #undef GET_INODE_PTR |
| 479 | #undef GET_INDIRECT_DATABLOCK |
| 480 | #undef GET_INDIRECT_PTR |
| 481 | |
| 482 | out: |
| 483 | if (err) |
| 484 | goto abort; |
| 485 | if (new) |
| 486 | set_buffer_new(bh_result); |
| 487 | map_bh(bh_result, sb, phys); |
| 488 | abort: |
| 489 | unlock_kernel(); |
| 490 | return err; |
| 491 | |
| 492 | abort_negative: |
| 493 | ufs_warning(sb, "ufs_get_block", "block < 0"); |
| 494 | goto abort; |
| 495 | |
| 496 | abort_too_big: |
| 497 | ufs_warning(sb, "ufs_get_block", "block > big"); |
| 498 | goto abort; |
| 499 | } |
| 500 | |
Adrian Bunk | 138bb68 | 2006-06-25 05:47:32 -0700 | [diff] [blame] | 501 | static struct buffer_head *ufs_getfrag(struct inode *inode, |
| 502 | unsigned int fragment, |
| 503 | int create, int *err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | { |
| 505 | struct buffer_head dummy; |
| 506 | int error; |
| 507 | |
| 508 | dummy.b_state = 0; |
| 509 | dummy.b_blocknr = -1000; |
| 510 | error = ufs_getfrag_block(inode, fragment, &dummy, create); |
| 511 | *err = error; |
| 512 | if (!error && buffer_mapped(&dummy)) { |
| 513 | struct buffer_head *bh; |
| 514 | bh = sb_getblk(inode->i_sb, dummy.b_blocknr); |
| 515 | if (buffer_new(&dummy)) { |
| 516 | memset(bh->b_data, 0, inode->i_sb->s_blocksize); |
| 517 | set_buffer_uptodate(bh); |
| 518 | mark_buffer_dirty(bh); |
| 519 | } |
| 520 | return bh; |
| 521 | } |
| 522 | return NULL; |
| 523 | } |
| 524 | |
| 525 | struct buffer_head * ufs_bread (struct inode * inode, unsigned fragment, |
| 526 | int create, int * err) |
| 527 | { |
| 528 | struct buffer_head * bh; |
| 529 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 530 | UFSD("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | bh = ufs_getfrag (inode, fragment, create, err); |
| 532 | if (!bh || buffer_uptodate(bh)) |
| 533 | return bh; |
| 534 | ll_rw_block (READ, 1, &bh); |
| 535 | wait_on_buffer (bh); |
| 536 | if (buffer_uptodate(bh)) |
| 537 | return bh; |
| 538 | brelse (bh); |
| 539 | *err = -EIO; |
| 540 | return NULL; |
| 541 | } |
| 542 | |
| 543 | static int ufs_writepage(struct page *page, struct writeback_control *wbc) |
| 544 | { |
| 545 | return block_write_full_page(page,ufs_getfrag_block,wbc); |
| 546 | } |
| 547 | static int ufs_readpage(struct file *file, struct page *page) |
| 548 | { |
| 549 | return block_read_full_page(page,ufs_getfrag_block); |
| 550 | } |
| 551 | static int ufs_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to) |
| 552 | { |
| 553 | return block_prepare_write(page,from,to,ufs_getfrag_block); |
| 554 | } |
| 555 | static sector_t ufs_bmap(struct address_space *mapping, sector_t block) |
| 556 | { |
| 557 | return generic_block_bmap(mapping,block,ufs_getfrag_block); |
| 558 | } |
Christoph Hellwig | f5e54d6 | 2006-06-28 04:26:44 -0700 | [diff] [blame] | 559 | const struct address_space_operations ufs_aops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | .readpage = ufs_readpage, |
| 561 | .writepage = ufs_writepage, |
| 562 | .sync_page = block_sync_page, |
| 563 | .prepare_write = ufs_prepare_write, |
| 564 | .commit_write = generic_commit_write, |
| 565 | .bmap = ufs_bmap |
| 566 | }; |
| 567 | |
Evgeniy Dushistov | 826843a | 2006-06-25 05:47:21 -0700 | [diff] [blame] | 568 | static void ufs_set_inode_ops(struct inode *inode) |
| 569 | { |
| 570 | if (S_ISREG(inode->i_mode)) { |
| 571 | inode->i_op = &ufs_file_inode_operations; |
| 572 | inode->i_fop = &ufs_file_operations; |
| 573 | inode->i_mapping->a_ops = &ufs_aops; |
| 574 | } else if (S_ISDIR(inode->i_mode)) { |
| 575 | inode->i_op = &ufs_dir_inode_operations; |
| 576 | inode->i_fop = &ufs_dir_operations; |
| 577 | inode->i_mapping->a_ops = &ufs_aops; |
| 578 | } else if (S_ISLNK(inode->i_mode)) { |
| 579 | if (!inode->i_blocks) |
| 580 | inode->i_op = &ufs_fast_symlink_inode_operations; |
| 581 | else { |
| 582 | inode->i_op = &page_symlink_inode_operations; |
| 583 | inode->i_mapping->a_ops = &ufs_aops; |
| 584 | } |
| 585 | } else |
| 586 | init_special_inode(inode, inode->i_mode, |
| 587 | ufs_get_inode_dev(inode->i_sb, UFS_I(inode))); |
| 588 | } |
| 589 | |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 590 | static void ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | { |
| 592 | struct ufs_inode_info *ufsi = UFS_I(inode); |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 593 | struct super_block *sb = inode->i_sb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | mode_t mode; |
| 595 | unsigned i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | |
| 597 | /* |
| 598 | * Copy data to the in-core inode. |
| 599 | */ |
| 600 | inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); |
| 601 | inode->i_nlink = fs16_to_cpu(sb, ufs_inode->ui_nlink); |
| 602 | if (inode->i_nlink == 0) |
| 603 | ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); |
| 604 | |
| 605 | /* |
| 606 | * Linux now has 32-bit uid and gid, so we can support EFT. |
| 607 | */ |
| 608 | inode->i_uid = ufs_get_inode_uid(sb, ufs_inode); |
| 609 | inode->i_gid = ufs_get_inode_gid(sb, ufs_inode); |
| 610 | |
| 611 | inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); |
| 612 | inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); |
| 613 | inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); |
| 614 | inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); |
| 615 | inode->i_mtime.tv_nsec = 0; |
| 616 | inode->i_atime.tv_nsec = 0; |
| 617 | inode->i_ctime.tv_nsec = 0; |
| 618 | inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); |
| 620 | ufsi->i_gen = fs32_to_cpu(sb, ufs_inode->ui_gen); |
| 621 | ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); |
| 622 | ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 623 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | |
| 625 | if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { |
| 626 | for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) |
| 627 | ufsi->i_u1.i_data[i] = ufs_inode->ui_u2.ui_addr.ui_db[i]; |
Evgeniy Dushistov | dd187a2 | 2006-06-25 05:47:25 -0700 | [diff] [blame] | 628 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) |
| 630 | ufsi->i_u1.i_symlink[i] = ufs_inode->ui_u2.ui_symlink[i]; |
| 631 | } |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 632 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 634 | static void ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode) |
| 635 | { |
| 636 | struct ufs_inode_info *ufsi = UFS_I(inode); |
| 637 | struct super_block *sb = inode->i_sb; |
| 638 | mode_t mode; |
| 639 | unsigned i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 641 | UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | /* |
| 643 | * Copy data to the in-core inode. |
| 644 | */ |
| 645 | inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); |
| 646 | inode->i_nlink = fs16_to_cpu(sb, ufs2_inode->ui_nlink); |
| 647 | if (inode->i_nlink == 0) |
| 648 | ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); |
| 649 | |
| 650 | /* |
| 651 | * Linux now has 32-bit uid and gid, so we can support EFT. |
| 652 | */ |
| 653 | inode->i_uid = fs32_to_cpu(sb, ufs2_inode->ui_uid); |
| 654 | inode->i_gid = fs32_to_cpu(sb, ufs2_inode->ui_gid); |
| 655 | |
| 656 | inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); |
| 657 | inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs2_inode->ui_atime.tv_sec); |
| 658 | inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs2_inode->ui_ctime.tv_sec); |
| 659 | inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs2_inode->ui_mtime.tv_sec); |
| 660 | inode->i_mtime.tv_nsec = 0; |
| 661 | inode->i_atime.tv_nsec = 0; |
| 662 | inode->i_ctime.tv_nsec = 0; |
| 663 | inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags); |
| 665 | ufsi->i_gen = fs32_to_cpu(sb, ufs2_inode->ui_gen); |
| 666 | /* |
| 667 | ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); |
| 668 | ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); |
| 669 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | |
| 671 | if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { |
| 672 | for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) |
| 673 | ufsi->i_u1.u2_i_data[i] = |
| 674 | ufs2_inode->ui_u2.ui_addr.ui_db[i]; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 675 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) |
| 677 | ufsi->i_u1.i_symlink[i] = ufs2_inode->ui_u2.ui_symlink[i]; |
| 678 | } |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 679 | } |
| 680 | |
| 681 | void ufs_read_inode(struct inode * inode) |
| 682 | { |
| 683 | struct ufs_inode_info *ufsi = UFS_I(inode); |
| 684 | struct super_block * sb; |
| 685 | struct ufs_sb_private_info * uspi; |
| 686 | struct buffer_head * bh; |
| 687 | |
| 688 | UFSD("ENTER, ino %lu\n", inode->i_ino); |
| 689 | |
| 690 | sb = inode->i_sb; |
| 691 | uspi = UFS_SB(sb)->s_uspi; |
| 692 | |
| 693 | if (inode->i_ino < UFS_ROOTINO || |
| 694 | inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { |
| 695 | ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n", |
| 696 | inode->i_ino); |
| 697 | goto bad_inode; |
| 698 | } |
| 699 | |
| 700 | bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); |
| 701 | if (!bh) { |
| 702 | ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n", |
| 703 | inode->i_ino); |
| 704 | goto bad_inode; |
| 705 | } |
| 706 | if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { |
| 707 | struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; |
| 708 | |
| 709 | ufs2_read_inode(inode, |
| 710 | ufs2_inode + ufs_inotofsbo(inode->i_ino)); |
| 711 | } else { |
| 712 | struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data; |
| 713 | |
| 714 | ufs1_read_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); |
| 715 | } |
| 716 | |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 717 | inode->i_version++; |
| 718 | ufsi->i_lastfrag = |
| 719 | (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; |
| 720 | ufsi->i_dir_start_lookup = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | ufsi->i_osync = 0; |
| 722 | |
Evgeniy Dushistov | 826843a | 2006-06-25 05:47:21 -0700 | [diff] [blame] | 723 | ufs_set_inode_ops(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | |
| 725 | brelse(bh); |
| 726 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 727 | UFSD("EXIT\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | return; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 729 | |
| 730 | bad_inode: |
| 731 | make_bad_inode(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | } |
| 733 | |
| 734 | static int ufs_update_inode(struct inode * inode, int do_sync) |
| 735 | { |
| 736 | struct ufs_inode_info *ufsi = UFS_I(inode); |
| 737 | struct super_block * sb; |
| 738 | struct ufs_sb_private_info * uspi; |
| 739 | struct buffer_head * bh; |
| 740 | struct ufs_inode * ufs_inode; |
| 741 | unsigned i; |
| 742 | unsigned flags; |
| 743 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 744 | UFSD("ENTER, ino %lu\n", inode->i_ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | |
| 746 | sb = inode->i_sb; |
| 747 | uspi = UFS_SB(sb)->s_uspi; |
| 748 | flags = UFS_SB(sb)->s_flags; |
| 749 | |
| 750 | if (inode->i_ino < UFS_ROOTINO || |
| 751 | inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { |
| 752 | ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); |
| 753 | return -1; |
| 754 | } |
| 755 | |
| 756 | bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); |
| 757 | if (!bh) { |
| 758 | ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); |
| 759 | return -1; |
| 760 | } |
| 761 | ufs_inode = (struct ufs_inode *) (bh->b_data + ufs_inotofsbo(inode->i_ino) * sizeof(struct ufs_inode)); |
| 762 | |
| 763 | ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); |
| 764 | ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); |
| 765 | |
| 766 | ufs_set_inode_uid(sb, ufs_inode, inode->i_uid); |
| 767 | ufs_set_inode_gid(sb, ufs_inode, inode->i_gid); |
| 768 | |
| 769 | ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); |
| 770 | ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); |
| 771 | ufs_inode->ui_atime.tv_usec = 0; |
| 772 | ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); |
| 773 | ufs_inode->ui_ctime.tv_usec = 0; |
| 774 | ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); |
| 775 | ufs_inode->ui_mtime.tv_usec = 0; |
| 776 | ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); |
| 777 | ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); |
| 778 | ufs_inode->ui_gen = cpu_to_fs32(sb, ufsi->i_gen); |
| 779 | |
| 780 | if ((flags & UFS_UID_MASK) == UFS_UID_EFT) { |
| 781 | ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow); |
| 782 | ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag); |
| 783 | } |
| 784 | |
| 785 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { |
| 786 | /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ |
| 787 | ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0]; |
| 788 | } else if (inode->i_blocks) { |
| 789 | for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) |
| 790 | ufs_inode->ui_u2.ui_addr.ui_db[i] = ufsi->i_u1.i_data[i]; |
| 791 | } |
| 792 | else { |
| 793 | for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) |
| 794 | ufs_inode->ui_u2.ui_symlink[i] = ufsi->i_u1.i_symlink[i]; |
| 795 | } |
| 796 | |
| 797 | if (!inode->i_nlink) |
| 798 | memset (ufs_inode, 0, sizeof(struct ufs_inode)); |
| 799 | |
| 800 | mark_buffer_dirty(bh); |
| 801 | if (do_sync) |
| 802 | sync_dirty_buffer(bh); |
| 803 | brelse (bh); |
| 804 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 805 | UFSD("EXIT\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | return 0; |
| 807 | } |
| 808 | |
| 809 | int ufs_write_inode (struct inode * inode, int wait) |
| 810 | { |
| 811 | int ret; |
| 812 | lock_kernel(); |
| 813 | ret = ufs_update_inode (inode, wait); |
| 814 | unlock_kernel(); |
| 815 | return ret; |
| 816 | } |
| 817 | |
| 818 | int ufs_sync_inode (struct inode *inode) |
| 819 | { |
| 820 | return ufs_update_inode (inode, 1); |
| 821 | } |
| 822 | |
| 823 | void ufs_delete_inode (struct inode * inode) |
| 824 | { |
Evgeniy Dushistov | 10e5dce | 2006-07-01 04:36:24 -0700 | [diff] [blame] | 825 | loff_t old_i_size; |
| 826 | |
Mark Fasheh | fef2665 | 2005-09-09 13:01:31 -0700 | [diff] [blame] | 827 | truncate_inode_pages(&inode->i_data, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | /*UFS_I(inode)->i_dtime = CURRENT_TIME;*/ |
| 829 | lock_kernel(); |
| 830 | mark_inode_dirty(inode); |
| 831 | ufs_update_inode(inode, IS_SYNC(inode)); |
Evgeniy Dushistov | 10e5dce | 2006-07-01 04:36:24 -0700 | [diff] [blame] | 832 | old_i_size = inode->i_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | inode->i_size = 0; |
Evgeniy Dushistov | 10e5dce | 2006-07-01 04:36:24 -0700 | [diff] [blame] | 834 | if (inode->i_blocks && ufs_truncate(inode, old_i_size)) |
| 835 | ufs_warning(inode->i_sb, __FUNCTION__, "ufs_truncate failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | ufs_free_inode (inode); |
| 837 | unlock_kernel(); |
| 838 | } |