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 | static void ufs_clear_frag(struct inode *inode, struct buffer_head *bh) |
Evgeniy Dushistov | c9a27b5 | 2006-06-25 05:47:19 -0700 | [diff] [blame] | 160 | { |
| 161 | lock_buffer(bh); |
| 162 | memset(bh->b_data, 0, inode->i_sb->s_blocksize); |
| 163 | set_buffer_uptodate(bh); |
| 164 | mark_buffer_dirty(bh); |
| 165 | unlock_buffer(bh); |
| 166 | if (IS_SYNC(inode)) |
| 167 | sync_dirty_buffer(bh); |
| 168 | } |
| 169 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 170 | static struct buffer_head * |
| 171 | ufs_clear_frags(struct inode *inode, sector_t beg, |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 172 | unsigned int n, sector_t want) |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 173 | { |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 174 | struct buffer_head *res = NULL, *bh; |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 175 | sector_t end = beg + n; |
| 176 | |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 177 | for (; beg < end; ++beg) { |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 178 | bh = sb_getblk(inode->i_sb, beg); |
| 179 | ufs_clear_frag(inode, bh); |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 180 | if (want != beg) |
| 181 | brelse(bh); |
| 182 | else |
| 183 | res = bh; |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 184 | } |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 185 | BUG_ON(!res); |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 186 | return res; |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * ufs_inode_getfrag() - allocate new fragment(s) |
| 191 | * @inode - pointer to inode |
| 192 | * @fragment - number of `fragment' which hold pointer |
| 193 | * to new allocated fragment(s) |
| 194 | * @new_fragment - number of new allocated fragment(s) |
| 195 | * @required - how many fragment(s) we require |
| 196 | * @err - we set it if something wrong |
| 197 | * @phys - pointer to where we save physical number of new allocated fragments, |
| 198 | * NULL if we allocate not data(indirect blocks for example). |
| 199 | * @new - we set it if we allocate new block |
| 200 | * @locked_page - for ufs_new_fragments() |
| 201 | */ |
| 202 | static struct buffer_head * |
| 203 | ufs_inode_getfrag(struct inode *inode, unsigned int fragment, |
| 204 | sector_t new_fragment, unsigned int required, int *err, |
| 205 | long *phys, int *new, struct page *locked_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | { |
| 207 | struct ufs_inode_info *ufsi = UFS_I(inode); |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 208 | struct super_block *sb = inode->i_sb; |
| 209 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | struct buffer_head * result; |
| 211 | unsigned block, blockoff, lastfrag, lastblock, lastblockoff; |
| 212 | unsigned tmp, goal; |
| 213 | __fs32 * p, * p2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 215 | UFSD("ENTER, ino %lu, fragment %u, new_fragment %llu, required %u, " |
| 216 | "metadata %d\n", inode->i_ino, fragment, |
| 217 | (unsigned long long)new_fragment, required, !phys); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | /* TODO : to be done for write support |
| 220 | if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
| 221 | goto ufs2; |
| 222 | */ |
| 223 | |
| 224 | block = ufs_fragstoblks (fragment); |
| 225 | blockoff = ufs_fragnum (fragment); |
| 226 | p = ufsi->i_u1.i_data + block; |
| 227 | goal = 0; |
| 228 | |
| 229 | repeat: |
| 230 | tmp = fs32_to_cpu(sb, *p); |
| 231 | lastfrag = ufsi->i_lastfrag; |
| 232 | if (tmp && fragment < lastfrag) { |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 233 | if (!phys) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); |
| 235 | if (tmp == fs32_to_cpu(sb, *p)) { |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 236 | UFSD("EXIT, result %u\n", tmp + blockoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | return result; |
| 238 | } |
| 239 | brelse (result); |
| 240 | goto repeat; |
| 241 | } else { |
Evgeniy Dushistov | c9a27b5 | 2006-06-25 05:47:19 -0700 | [diff] [blame] | 242 | *phys = tmp + blockoff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | return NULL; |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | lastblock = ufs_fragstoblks (lastfrag); |
| 248 | lastblockoff = ufs_fragnum (lastfrag); |
| 249 | /* |
| 250 | * We will extend file into new block beyond last allocated block |
| 251 | */ |
| 252 | if (lastblock < block) { |
| 253 | /* |
| 254 | * We must reallocate last allocated block |
| 255 | */ |
| 256 | if (lastblockoff) { |
| 257 | p2 = ufsi->i_u1.i_data + lastblock; |
| 258 | tmp = ufs_new_fragments (inode, p2, lastfrag, |
Evgeniy Dushistov | 6ef4d6b | 2006-06-25 05:47:20 -0700 | [diff] [blame] | 259 | fs32_to_cpu(sb, *p2), uspi->s_fpb - lastblockoff, |
| 260 | err, locked_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | if (!tmp) { |
| 262 | if (lastfrag != ufsi->i_lastfrag) |
| 263 | goto repeat; |
| 264 | else |
| 265 | return NULL; |
| 266 | } |
| 267 | lastfrag = ufsi->i_lastfrag; |
| 268 | |
| 269 | } |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 270 | tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock]); |
| 271 | if (tmp) |
| 272 | goal = tmp + uspi->s_fpb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | tmp = ufs_new_fragments (inode, p, fragment - blockoff, |
Evgeniy Dushistov | 6ef4d6b | 2006-06-25 05:47:20 -0700 | [diff] [blame] | 274 | goal, required + blockoff, |
| 275 | err, locked_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | } |
| 277 | /* |
| 278 | * We will extend last allocated block |
| 279 | */ |
| 280 | else if (lastblock == block) { |
Evgeniy Dushistov | 6ef4d6b | 2006-06-25 05:47:20 -0700 | [diff] [blame] | 281 | tmp = ufs_new_fragments(inode, p, fragment - (blockoff - lastblockoff), |
| 282 | fs32_to_cpu(sb, *p), required + (blockoff - lastblockoff), |
| 283 | err, locked_page); |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 284 | } else /* (lastblock > block) */ { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | /* |
| 286 | * We will allocate new block before last allocated block |
| 287 | */ |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 288 | if (block) { |
| 289 | tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[block-1]); |
| 290 | if (tmp) |
| 291 | goal = tmp + uspi->s_fpb; |
| 292 | } |
Evgeniy Dushistov | 6ef4d6b | 2006-06-25 05:47:20 -0700 | [diff] [blame] | 293 | tmp = ufs_new_fragments(inode, p, fragment - blockoff, |
| 294 | goal, uspi->s_fpb, err, locked_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | } |
| 296 | if (!tmp) { |
| 297 | if ((!blockoff && *p) || |
| 298 | (blockoff && lastfrag != ufsi->i_lastfrag)) |
| 299 | goto repeat; |
| 300 | *err = -ENOSPC; |
| 301 | return NULL; |
| 302 | } |
| 303 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 304 | if (!phys) { |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 305 | result = ufs_clear_frags(inode, tmp, required, tmp + blockoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | } else { |
Evgeniy Dushistov | c9a27b5 | 2006-06-25 05:47:19 -0700 | [diff] [blame] | 307 | *phys = tmp + blockoff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | result = NULL; |
| 309 | *err = 0; |
| 310 | *new = 1; |
| 311 | } |
| 312 | |
| 313 | inode->i_ctime = CURRENT_TIME_SEC; |
| 314 | if (IS_SYNC(inode)) |
| 315 | ufs_sync_inode (inode); |
| 316 | mark_inode_dirty(inode); |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 317 | UFSD("EXIT, result %u\n", tmp + blockoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | return result; |
| 319 | |
| 320 | /* This part : To be implemented .... |
| 321 | Required only for writing, not required for READ-ONLY. |
| 322 | ufs2: |
| 323 | |
| 324 | u2_block = ufs_fragstoblks(fragment); |
| 325 | u2_blockoff = ufs_fragnum(fragment); |
| 326 | p = ufsi->i_u1.u2_i_data + block; |
| 327 | goal = 0; |
| 328 | |
| 329 | repeat2: |
| 330 | tmp = fs32_to_cpu(sb, *p); |
| 331 | lastfrag = ufsi->i_lastfrag; |
| 332 | |
| 333 | */ |
| 334 | } |
| 335 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 336 | /** |
| 337 | * ufs_inode_getblock() - allocate new block |
| 338 | * @inode - pointer to inode |
| 339 | * @bh - pointer to block which hold "pointer" to new allocated block |
| 340 | * @fragment - number of `fragment' which hold pointer |
| 341 | * to new allocated block |
| 342 | * @new_fragment - number of new allocated fragment |
| 343 | * (block will hold this fragment and also uspi->s_fpb-1) |
| 344 | * @err - see ufs_inode_getfrag() |
| 345 | * @phys - see ufs_inode_getfrag() |
| 346 | * @new - see ufs_inode_getfrag() |
| 347 | * @locked_page - see ufs_inode_getfrag() |
| 348 | */ |
| 349 | static struct buffer_head * |
| 350 | ufs_inode_getblock(struct inode *inode, struct buffer_head *bh, |
| 351 | unsigned int fragment, sector_t new_fragment, int *err, |
| 352 | long *phys, int *new, struct page *locked_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | { |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 354 | struct super_block *sb = inode->i_sb; |
| 355 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | struct buffer_head * result; |
| 357 | unsigned tmp, goal, block, blockoff; |
| 358 | __fs32 * p; |
| 359 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | block = ufs_fragstoblks (fragment); |
| 361 | blockoff = ufs_fragnum (fragment); |
| 362 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 363 | UFSD("ENTER, ino %lu, fragment %u, new_fragment %llu, metadata %d\n", |
| 364 | inode->i_ino, fragment, (unsigned long long)new_fragment, !phys); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | |
| 366 | result = NULL; |
| 367 | if (!bh) |
| 368 | goto out; |
| 369 | if (!buffer_uptodate(bh)) { |
| 370 | ll_rw_block (READ, 1, &bh); |
| 371 | wait_on_buffer (bh); |
| 372 | if (!buffer_uptodate(bh)) |
| 373 | goto out; |
| 374 | } |
| 375 | |
| 376 | p = (__fs32 *) bh->b_data + block; |
| 377 | repeat: |
| 378 | tmp = fs32_to_cpu(sb, *p); |
| 379 | if (tmp) { |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 380 | if (!phys) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); |
| 382 | if (tmp == fs32_to_cpu(sb, *p)) |
| 383 | goto out; |
| 384 | brelse (result); |
| 385 | goto repeat; |
| 386 | } else { |
Evgeniy Dushistov | c9a27b5 | 2006-06-25 05:47:19 -0700 | [diff] [blame] | 387 | *phys = tmp + blockoff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | goto out; |
| 389 | } |
| 390 | } |
| 391 | |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 392 | 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] | 393 | goal = tmp + uspi->s_fpb; |
| 394 | else |
| 395 | goal = bh->b_blocknr + uspi->s_fpb; |
Evgeniy Dushistov | 6ef4d6b | 2006-06-25 05:47:20 -0700 | [diff] [blame] | 396 | tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, |
| 397 | uspi->s_fpb, err, locked_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | if (!tmp) { |
| 399 | if (fs32_to_cpu(sb, *p)) |
| 400 | goto repeat; |
| 401 | goto out; |
| 402 | } |
| 403 | |
Evgeniy Dushistov | c9a27b5 | 2006-06-25 05:47:19 -0700 | [diff] [blame] | 404 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 405 | if (!phys) { |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 406 | result = ufs_clear_frags(inode, tmp, uspi->s_fpb, |
| 407 | tmp + blockoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | } else { |
Evgeniy Dushistov | c9a27b5 | 2006-06-25 05:47:19 -0700 | [diff] [blame] | 409 | *phys = tmp + blockoff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | *new = 1; |
| 411 | } |
| 412 | |
| 413 | mark_buffer_dirty(bh); |
| 414 | if (IS_SYNC(inode)) |
| 415 | sync_dirty_buffer(bh); |
| 416 | inode->i_ctime = CURRENT_TIME_SEC; |
| 417 | mark_inode_dirty(inode); |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 418 | UFSD("result %u\n", tmp + blockoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | out: |
| 420 | brelse (bh); |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 421 | UFSD("EXIT\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | return result; |
| 423 | } |
| 424 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 425 | /** |
| 426 | * ufs_getfrag_bloc() - `get_block_t' function, interface between UFS and |
| 427 | * readpage, writepage and so on |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | */ |
| 429 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 430 | 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] | 431 | { |
| 432 | struct super_block * sb = inode->i_sb; |
| 433 | struct ufs_sb_private_info * uspi = UFS_SB(sb)->s_uspi; |
| 434 | struct buffer_head * bh; |
| 435 | int ret, err, new; |
| 436 | unsigned long ptr,phys; |
| 437 | u64 phys64 = 0; |
| 438 | |
| 439 | if (!create) { |
| 440 | phys64 = ufs_frag_map(inode, fragment); |
Andrew Morton | 7256d81 | 2006-06-29 02:24:29 -0700 | [diff] [blame] | 441 | UFSD("phys64 = %llu\n", (unsigned long long)phys64); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | if (phys64) |
| 443 | map_bh(bh_result, sb, phys64); |
| 444 | return 0; |
| 445 | } |
| 446 | |
| 447 | /* This code entered only while writing ....? */ |
| 448 | |
| 449 | err = -EIO; |
| 450 | new = 0; |
| 451 | ret = 0; |
| 452 | bh = NULL; |
| 453 | |
| 454 | lock_kernel(); |
| 455 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 456 | 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] | 457 | if (fragment < 0) |
| 458 | goto abort_negative; |
| 459 | if (fragment > |
| 460 | ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb) |
| 461 | << uspi->s_fpbshift)) |
| 462 | goto abort_too_big; |
| 463 | |
| 464 | err = 0; |
| 465 | ptr = fragment; |
| 466 | |
| 467 | /* |
| 468 | * ok, these macros clean the logic up a bit and make |
| 469 | * it much more readable: |
| 470 | */ |
| 471 | #define GET_INODE_DATABLOCK(x) \ |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 472 | ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new, bh_result->b_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | #define GET_INODE_PTR(x) \ |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 474 | ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL, bh_result->b_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | #define GET_INDIRECT_DATABLOCK(x) \ |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 476 | ufs_inode_getblock(inode, bh, x, fragment, \ |
| 477 | &err, &phys, &new, bh_result->b_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | #define GET_INDIRECT_PTR(x) \ |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 479 | ufs_inode_getblock(inode, bh, x, fragment, \ |
| 480 | &err, NULL, NULL, bh_result->b_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
| 482 | if (ptr < UFS_NDIR_FRAGMENT) { |
| 483 | bh = GET_INODE_DATABLOCK(ptr); |
| 484 | goto out; |
| 485 | } |
| 486 | ptr -= UFS_NDIR_FRAGMENT; |
| 487 | if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) { |
| 488 | bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift)); |
| 489 | goto get_indirect; |
| 490 | } |
| 491 | ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift); |
| 492 | if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) { |
| 493 | bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift)); |
| 494 | goto get_double; |
| 495 | } |
| 496 | ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift); |
| 497 | bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift)); |
| 498 | bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask); |
| 499 | get_double: |
| 500 | bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask); |
| 501 | get_indirect: |
| 502 | bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask); |
| 503 | |
| 504 | #undef GET_INODE_DATABLOCK |
| 505 | #undef GET_INODE_PTR |
| 506 | #undef GET_INDIRECT_DATABLOCK |
| 507 | #undef GET_INDIRECT_PTR |
| 508 | |
| 509 | out: |
| 510 | if (err) |
| 511 | goto abort; |
| 512 | if (new) |
| 513 | set_buffer_new(bh_result); |
| 514 | map_bh(bh_result, sb, phys); |
| 515 | abort: |
| 516 | unlock_kernel(); |
| 517 | return err; |
| 518 | |
| 519 | abort_negative: |
| 520 | ufs_warning(sb, "ufs_get_block", "block < 0"); |
| 521 | goto abort; |
| 522 | |
| 523 | abort_too_big: |
| 524 | ufs_warning(sb, "ufs_get_block", "block > big"); |
| 525 | goto abort; |
| 526 | } |
| 527 | |
Adrian Bunk | 138bb68 | 2006-06-25 05:47:32 -0700 | [diff] [blame] | 528 | static struct buffer_head *ufs_getfrag(struct inode *inode, |
| 529 | unsigned int fragment, |
| 530 | int create, int *err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | { |
| 532 | struct buffer_head dummy; |
| 533 | int error; |
| 534 | |
| 535 | dummy.b_state = 0; |
| 536 | dummy.b_blocknr = -1000; |
| 537 | error = ufs_getfrag_block(inode, fragment, &dummy, create); |
| 538 | *err = error; |
| 539 | if (!error && buffer_mapped(&dummy)) { |
| 540 | struct buffer_head *bh; |
| 541 | bh = sb_getblk(inode->i_sb, dummy.b_blocknr); |
| 542 | if (buffer_new(&dummy)) { |
| 543 | memset(bh->b_data, 0, inode->i_sb->s_blocksize); |
| 544 | set_buffer_uptodate(bh); |
| 545 | mark_buffer_dirty(bh); |
| 546 | } |
| 547 | return bh; |
| 548 | } |
| 549 | return NULL; |
| 550 | } |
| 551 | |
| 552 | struct buffer_head * ufs_bread (struct inode * inode, unsigned fragment, |
| 553 | int create, int * err) |
| 554 | { |
| 555 | struct buffer_head * bh; |
| 556 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 557 | UFSD("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | bh = ufs_getfrag (inode, fragment, create, err); |
| 559 | if (!bh || buffer_uptodate(bh)) |
| 560 | return bh; |
| 561 | ll_rw_block (READ, 1, &bh); |
| 562 | wait_on_buffer (bh); |
| 563 | if (buffer_uptodate(bh)) |
| 564 | return bh; |
| 565 | brelse (bh); |
| 566 | *err = -EIO; |
| 567 | return NULL; |
| 568 | } |
| 569 | |
| 570 | static int ufs_writepage(struct page *page, struct writeback_control *wbc) |
| 571 | { |
| 572 | return block_write_full_page(page,ufs_getfrag_block,wbc); |
| 573 | } |
| 574 | static int ufs_readpage(struct file *file, struct page *page) |
| 575 | { |
| 576 | return block_read_full_page(page,ufs_getfrag_block); |
| 577 | } |
| 578 | static int ufs_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to) |
| 579 | { |
| 580 | return block_prepare_write(page,from,to,ufs_getfrag_block); |
| 581 | } |
| 582 | static sector_t ufs_bmap(struct address_space *mapping, sector_t block) |
| 583 | { |
| 584 | return generic_block_bmap(mapping,block,ufs_getfrag_block); |
| 585 | } |
Christoph Hellwig | f5e54d6 | 2006-06-28 04:26:44 -0700 | [diff] [blame] | 586 | const struct address_space_operations ufs_aops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | .readpage = ufs_readpage, |
| 588 | .writepage = ufs_writepage, |
| 589 | .sync_page = block_sync_page, |
| 590 | .prepare_write = ufs_prepare_write, |
| 591 | .commit_write = generic_commit_write, |
| 592 | .bmap = ufs_bmap |
| 593 | }; |
| 594 | |
Evgeniy Dushistov | 826843a | 2006-06-25 05:47:21 -0700 | [diff] [blame] | 595 | static void ufs_set_inode_ops(struct inode *inode) |
| 596 | { |
| 597 | if (S_ISREG(inode->i_mode)) { |
| 598 | inode->i_op = &ufs_file_inode_operations; |
| 599 | inode->i_fop = &ufs_file_operations; |
| 600 | inode->i_mapping->a_ops = &ufs_aops; |
| 601 | } else if (S_ISDIR(inode->i_mode)) { |
| 602 | inode->i_op = &ufs_dir_inode_operations; |
| 603 | inode->i_fop = &ufs_dir_operations; |
| 604 | inode->i_mapping->a_ops = &ufs_aops; |
| 605 | } else if (S_ISLNK(inode->i_mode)) { |
| 606 | if (!inode->i_blocks) |
| 607 | inode->i_op = &ufs_fast_symlink_inode_operations; |
| 608 | else { |
| 609 | inode->i_op = &page_symlink_inode_operations; |
| 610 | inode->i_mapping->a_ops = &ufs_aops; |
| 611 | } |
| 612 | } else |
| 613 | init_special_inode(inode, inode->i_mode, |
| 614 | ufs_get_inode_dev(inode->i_sb, UFS_I(inode))); |
| 615 | } |
| 616 | |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 617 | 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] | 618 | { |
| 619 | struct ufs_inode_info *ufsi = UFS_I(inode); |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 620 | struct super_block *sb = inode->i_sb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | mode_t mode; |
| 622 | unsigned i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | |
| 624 | /* |
| 625 | * Copy data to the in-core inode. |
| 626 | */ |
| 627 | inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); |
| 628 | inode->i_nlink = fs16_to_cpu(sb, ufs_inode->ui_nlink); |
| 629 | if (inode->i_nlink == 0) |
| 630 | ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); |
| 631 | |
| 632 | /* |
| 633 | * Linux now has 32-bit uid and gid, so we can support EFT. |
| 634 | */ |
| 635 | inode->i_uid = ufs_get_inode_uid(sb, ufs_inode); |
| 636 | inode->i_gid = ufs_get_inode_gid(sb, ufs_inode); |
| 637 | |
| 638 | inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); |
| 639 | inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); |
| 640 | inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); |
| 641 | inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); |
| 642 | inode->i_mtime.tv_nsec = 0; |
| 643 | inode->i_atime.tv_nsec = 0; |
| 644 | inode->i_ctime.tv_nsec = 0; |
| 645 | inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); |
| 647 | ufsi->i_gen = fs32_to_cpu(sb, ufs_inode->ui_gen); |
| 648 | ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); |
| 649 | 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] | 650 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | |
| 652 | if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { |
| 653 | for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) |
| 654 | 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] | 655 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) |
| 657 | ufsi->i_u1.i_symlink[i] = ufs_inode->ui_u2.ui_symlink[i]; |
| 658 | } |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 659 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 661 | static void ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode) |
| 662 | { |
| 663 | struct ufs_inode_info *ufsi = UFS_I(inode); |
| 664 | struct super_block *sb = inode->i_sb; |
| 665 | mode_t mode; |
| 666 | unsigned i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 668 | UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | /* |
| 670 | * Copy data to the in-core inode. |
| 671 | */ |
| 672 | inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); |
| 673 | inode->i_nlink = fs16_to_cpu(sb, ufs2_inode->ui_nlink); |
| 674 | if (inode->i_nlink == 0) |
| 675 | ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); |
| 676 | |
| 677 | /* |
| 678 | * Linux now has 32-bit uid and gid, so we can support EFT. |
| 679 | */ |
| 680 | inode->i_uid = fs32_to_cpu(sb, ufs2_inode->ui_uid); |
| 681 | inode->i_gid = fs32_to_cpu(sb, ufs2_inode->ui_gid); |
| 682 | |
| 683 | inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); |
| 684 | inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs2_inode->ui_atime.tv_sec); |
| 685 | inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs2_inode->ui_ctime.tv_sec); |
| 686 | inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs2_inode->ui_mtime.tv_sec); |
| 687 | inode->i_mtime.tv_nsec = 0; |
| 688 | inode->i_atime.tv_nsec = 0; |
| 689 | inode->i_ctime.tv_nsec = 0; |
| 690 | inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags); |
| 692 | ufsi->i_gen = fs32_to_cpu(sb, ufs2_inode->ui_gen); |
| 693 | /* |
| 694 | ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); |
| 695 | ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); |
| 696 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | |
| 698 | if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { |
| 699 | for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) |
| 700 | ufsi->i_u1.u2_i_data[i] = |
| 701 | ufs2_inode->ui_u2.ui_addr.ui_db[i]; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 702 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) |
| 704 | ufsi->i_u1.i_symlink[i] = ufs2_inode->ui_u2.ui_symlink[i]; |
| 705 | } |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 706 | } |
| 707 | |
| 708 | void ufs_read_inode(struct inode * inode) |
| 709 | { |
| 710 | struct ufs_inode_info *ufsi = UFS_I(inode); |
| 711 | struct super_block * sb; |
| 712 | struct ufs_sb_private_info * uspi; |
| 713 | struct buffer_head * bh; |
| 714 | |
| 715 | UFSD("ENTER, ino %lu\n", inode->i_ino); |
| 716 | |
| 717 | sb = inode->i_sb; |
| 718 | uspi = UFS_SB(sb)->s_uspi; |
| 719 | |
| 720 | if (inode->i_ino < UFS_ROOTINO || |
| 721 | inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { |
| 722 | ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n", |
| 723 | inode->i_ino); |
| 724 | goto bad_inode; |
| 725 | } |
| 726 | |
| 727 | bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); |
| 728 | if (!bh) { |
| 729 | ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n", |
| 730 | inode->i_ino); |
| 731 | goto bad_inode; |
| 732 | } |
| 733 | if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { |
| 734 | struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; |
| 735 | |
| 736 | ufs2_read_inode(inode, |
| 737 | ufs2_inode + ufs_inotofsbo(inode->i_ino)); |
| 738 | } else { |
| 739 | struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data; |
| 740 | |
| 741 | ufs1_read_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); |
| 742 | } |
| 743 | |
| 744 | inode->i_blksize = PAGE_SIZE;/*This is the optimal IO size (for stat)*/ |
| 745 | inode->i_version++; |
| 746 | ufsi->i_lastfrag = |
| 747 | (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; |
| 748 | ufsi->i_dir_start_lookup = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | ufsi->i_osync = 0; |
| 750 | |
Evgeniy Dushistov | 826843a | 2006-06-25 05:47:21 -0700 | [diff] [blame] | 751 | ufs_set_inode_ops(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | |
| 753 | brelse(bh); |
| 754 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 755 | UFSD("EXIT\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | return; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 757 | |
| 758 | bad_inode: |
| 759 | make_bad_inode(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | } |
| 761 | |
| 762 | static int ufs_update_inode(struct inode * inode, int do_sync) |
| 763 | { |
| 764 | struct ufs_inode_info *ufsi = UFS_I(inode); |
| 765 | struct super_block * sb; |
| 766 | struct ufs_sb_private_info * uspi; |
| 767 | struct buffer_head * bh; |
| 768 | struct ufs_inode * ufs_inode; |
| 769 | unsigned i; |
| 770 | unsigned flags; |
| 771 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 772 | UFSD("ENTER, ino %lu\n", inode->i_ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | |
| 774 | sb = inode->i_sb; |
| 775 | uspi = UFS_SB(sb)->s_uspi; |
| 776 | flags = UFS_SB(sb)->s_flags; |
| 777 | |
| 778 | if (inode->i_ino < UFS_ROOTINO || |
| 779 | inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { |
| 780 | ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); |
| 781 | return -1; |
| 782 | } |
| 783 | |
| 784 | bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); |
| 785 | if (!bh) { |
| 786 | ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); |
| 787 | return -1; |
| 788 | } |
| 789 | ufs_inode = (struct ufs_inode *) (bh->b_data + ufs_inotofsbo(inode->i_ino) * sizeof(struct ufs_inode)); |
| 790 | |
| 791 | ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); |
| 792 | ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); |
| 793 | |
| 794 | ufs_set_inode_uid(sb, ufs_inode, inode->i_uid); |
| 795 | ufs_set_inode_gid(sb, ufs_inode, inode->i_gid); |
| 796 | |
| 797 | ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); |
| 798 | ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); |
| 799 | ufs_inode->ui_atime.tv_usec = 0; |
| 800 | ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); |
| 801 | ufs_inode->ui_ctime.tv_usec = 0; |
| 802 | ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); |
| 803 | ufs_inode->ui_mtime.tv_usec = 0; |
| 804 | ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); |
| 805 | ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); |
| 806 | ufs_inode->ui_gen = cpu_to_fs32(sb, ufsi->i_gen); |
| 807 | |
| 808 | if ((flags & UFS_UID_MASK) == UFS_UID_EFT) { |
| 809 | ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow); |
| 810 | ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag); |
| 811 | } |
| 812 | |
| 813 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { |
| 814 | /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ |
| 815 | ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0]; |
| 816 | } else if (inode->i_blocks) { |
| 817 | for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) |
| 818 | ufs_inode->ui_u2.ui_addr.ui_db[i] = ufsi->i_u1.i_data[i]; |
| 819 | } |
| 820 | else { |
| 821 | for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) |
| 822 | ufs_inode->ui_u2.ui_symlink[i] = ufsi->i_u1.i_symlink[i]; |
| 823 | } |
| 824 | |
| 825 | if (!inode->i_nlink) |
| 826 | memset (ufs_inode, 0, sizeof(struct ufs_inode)); |
| 827 | |
| 828 | mark_buffer_dirty(bh); |
| 829 | if (do_sync) |
| 830 | sync_dirty_buffer(bh); |
| 831 | brelse (bh); |
| 832 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 833 | UFSD("EXIT\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | return 0; |
| 835 | } |
| 836 | |
| 837 | int ufs_write_inode (struct inode * inode, int wait) |
| 838 | { |
| 839 | int ret; |
| 840 | lock_kernel(); |
| 841 | ret = ufs_update_inode (inode, wait); |
| 842 | unlock_kernel(); |
| 843 | return ret; |
| 844 | } |
| 845 | |
| 846 | int ufs_sync_inode (struct inode *inode) |
| 847 | { |
| 848 | return ufs_update_inode (inode, 1); |
| 849 | } |
| 850 | |
| 851 | void ufs_delete_inode (struct inode * inode) |
| 852 | { |
Evgeniy Dushistov | 10e5dce | 2006-07-01 04:36:24 -0700 | [diff] [blame] | 853 | loff_t old_i_size; |
| 854 | |
Mark Fasheh | fef2665 | 2005-09-09 13:01:31 -0700 | [diff] [blame] | 855 | truncate_inode_pages(&inode->i_data, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | /*UFS_I(inode)->i_dtime = CURRENT_TIME;*/ |
| 857 | lock_kernel(); |
| 858 | mark_inode_dirty(inode); |
| 859 | ufs_update_inode(inode, IS_SYNC(inode)); |
Evgeniy Dushistov | 10e5dce | 2006-07-01 04:36:24 -0700 | [diff] [blame] | 860 | old_i_size = inode->i_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | inode->i_size = 0; |
Evgeniy Dushistov | 10e5dce | 2006-07-01 04:36:24 -0700 | [diff] [blame] | 862 | if (inode->i_blocks && ufs_truncate(inode, old_i_size)) |
| 863 | ufs_warning(inode->i_sb, __FUNCTION__, "ufs_truncate failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | ufs_free_inode (inode); |
| 865 | unlock_kernel(); |
| 866 | } |