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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
| 30 | #include <linux/errno.h> |
| 31 | #include <linux/fs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include <linux/time.h> |
| 33 | #include <linux/stat.h> |
| 34 | #include <linux/string.h> |
| 35 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <linux/buffer_head.h> |
Christoph Hellwig | a9185b4 | 2010-03-05 09:21:37 +0100 | [diff] [blame] | 37 | #include <linux/writeback.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
Mike Frysinger | e542059 | 2008-02-08 04:21:31 -0800 | [diff] [blame] | 39 | #include "ufs_fs.h" |
Christoph Hellwig | bcd6d4e | 2007-10-16 23:26:51 -0700 | [diff] [blame] | 40 | #include "ufs.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include "swab.h" |
| 42 | #include "util.h" |
| 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t offsets[4]) |
| 45 | { |
| 46 | struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi; |
| 47 | int ptrs = uspi->s_apb; |
| 48 | int ptrs_bits = uspi->s_apbshift; |
| 49 | const long direct_blocks = UFS_NDADDR, |
| 50 | indirect_blocks = ptrs, |
| 51 | double_blocks = (1 << (ptrs_bits * 2)); |
| 52 | int n = 0; |
| 53 | |
| 54 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 55 | UFSD("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks); |
Roel Kluin | 37044c8 | 2009-06-17 16:26:28 -0700 | [diff] [blame] | 56 | if (i_block < direct_blocks) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | offsets[n++] = i_block; |
| 58 | } else if ((i_block -= direct_blocks) < indirect_blocks) { |
| 59 | offsets[n++] = UFS_IND_BLOCK; |
| 60 | offsets[n++] = i_block; |
| 61 | } else if ((i_block -= indirect_blocks) < double_blocks) { |
| 62 | offsets[n++] = UFS_DIND_BLOCK; |
| 63 | offsets[n++] = i_block >> ptrs_bits; |
| 64 | offsets[n++] = i_block & (ptrs - 1); |
| 65 | } else if (((i_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) { |
| 66 | offsets[n++] = UFS_TIND_BLOCK; |
| 67 | offsets[n++] = i_block >> (ptrs_bits * 2); |
| 68 | offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1); |
| 69 | offsets[n++] = i_block & (ptrs - 1); |
| 70 | } else { |
| 71 | ufs_warning(inode->i_sb, "ufs_block_to_path", "block > big"); |
| 72 | } |
| 73 | return n; |
| 74 | } |
| 75 | |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 76 | typedef struct { |
| 77 | void *p; |
| 78 | union { |
| 79 | __fs32 key32; |
| 80 | __fs64 key64; |
| 81 | }; |
| 82 | struct buffer_head *bh; |
| 83 | } Indirect; |
| 84 | |
| 85 | static inline int grow_chain32(struct ufs_inode_info *ufsi, |
| 86 | struct buffer_head *bh, __fs32 *v, |
| 87 | Indirect *from, Indirect *to) |
| 88 | { |
| 89 | Indirect *p; |
| 90 | unsigned seq; |
| 91 | to->bh = bh; |
| 92 | do { |
| 93 | seq = read_seqbegin(&ufsi->meta_lock); |
| 94 | to->key32 = *(__fs32 *)(to->p = v); |
| 95 | for (p = from; p <= to && p->key32 == *(__fs32 *)p->p; p++) |
| 96 | ; |
| 97 | } while (read_seqretry(&ufsi->meta_lock, seq)); |
| 98 | return (p > to); |
| 99 | } |
| 100 | |
| 101 | static inline int grow_chain64(struct ufs_inode_info *ufsi, |
| 102 | struct buffer_head *bh, __fs64 *v, |
| 103 | Indirect *from, Indirect *to) |
| 104 | { |
| 105 | Indirect *p; |
| 106 | unsigned seq; |
| 107 | to->bh = bh; |
| 108 | do { |
| 109 | seq = read_seqbegin(&ufsi->meta_lock); |
| 110 | to->key64 = *(__fs64 *)(to->p = v); |
| 111 | for (p = from; p <= to && p->key64 == *(__fs64 *)p->p; p++) |
| 112 | ; |
| 113 | } while (read_seqretry(&ufsi->meta_lock, seq)); |
| 114 | return (p > to); |
| 115 | } |
| 116 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | /* |
| 118 | * Returns the location of the fragment from |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 119 | * the beginning of the filesystem. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | */ |
| 121 | |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 122 | static u64 ufs_frag_map(struct inode *inode, sector_t frag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | { |
| 124 | struct ufs_inode_info *ufsi = UFS_I(inode); |
| 125 | struct super_block *sb = inode->i_sb; |
| 126 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
| 127 | u64 mask = (u64) uspi->s_apbmask>>uspi->s_fpbshift; |
| 128 | int shift = uspi->s_apbshift-uspi->s_fpbshift; |
| 129 | sector_t offsets[4], *p; |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 130 | Indirect chain[4], *q = chain; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | int depth = ufs_block_to_path(inode, frag >> uspi->s_fpbshift, offsets); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | unsigned flags = UFS_SB(sb)->s_flags; |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 133 | u64 res = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 135 | UFSD(": frag = %llu depth = %d\n", (unsigned long long)frag, depth); |
Andrew Morton | 7256d81 | 2006-06-29 02:24:29 -0700 | [diff] [blame] | 136 | UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n", |
| 137 | uspi->s_fpbshift, uspi->s_apbmask, |
| 138 | (unsigned long long)mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | |
| 140 | if (depth == 0) |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 141 | goto no_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 143 | again: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | p = offsets; |
| 145 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
| 147 | goto ufs2; |
| 148 | |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 149 | if (!grow_chain32(ufsi, NULL, &ufsi->i_u1.i_data[*p++], chain, q)) |
| 150 | goto changed; |
| 151 | if (!q->key32) |
| 152 | goto no_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | while (--depth) { |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 154 | __fs32 *ptr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | struct buffer_head *bh; |
| 156 | sector_t n = *p++; |
| 157 | |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 158 | bh = sb_bread(sb, uspi->s_sbbase + |
| 159 | fs32_to_cpu(sb, q->key32) + (n>>shift)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | if (!bh) |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 161 | goto no_block; |
| 162 | ptr = (__fs32 *)bh->b_data + (n & mask); |
| 163 | if (!grow_chain32(ufsi, bh, ptr, chain, ++q)) |
| 164 | goto changed; |
| 165 | if (!q->key32) |
| 166 | goto no_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | } |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 168 | res = fs32_to_cpu(sb, q->key32); |
| 169 | goto found; |
| 170 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | ufs2: |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 172 | if (!grow_chain64(ufsi, NULL, &ufsi->i_u1.u2_i_data[*p++], chain, q)) |
| 173 | goto changed; |
| 174 | if (!q->key64) |
| 175 | goto no_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
| 177 | while (--depth) { |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 178 | __fs64 *ptr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | struct buffer_head *bh; |
| 180 | sector_t n = *p++; |
| 181 | |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 182 | bh = sb_bread(sb, uspi->s_sbbase + |
| 183 | fs64_to_cpu(sb, q->key64) + (n>>shift)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | if (!bh) |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 185 | goto no_block; |
| 186 | ptr = (__fs64 *)bh->b_data + (n & mask); |
| 187 | if (!grow_chain64(ufsi, bh, ptr, chain, ++q)) |
| 188 | goto changed; |
| 189 | if (!q->key64) |
| 190 | goto no_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | } |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 192 | res = fs64_to_cpu(sb, q->key64); |
| 193 | found: |
| 194 | res += uspi->s_sbbase + (frag & uspi->s_fpbmask); |
| 195 | no_block: |
| 196 | while (q > chain) { |
| 197 | brelse(q->bh); |
| 198 | q--; |
| 199 | } |
| 200 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 202 | changed: |
| 203 | while (q > chain) { |
| 204 | brelse(q->bh); |
| 205 | q--; |
| 206 | } |
| 207 | goto again; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | } |
| 209 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 210 | /** |
| 211 | * ufs_inode_getfrag() - allocate new fragment(s) |
Fabian Frederick | edc023ca | 2014-08-08 14:21:08 -0700 | [diff] [blame] | 212 | * @inode: pointer to inode |
| 213 | * @fragment: number of `fragment' which hold pointer |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 214 | * to new allocated fragment(s) |
Fabian Frederick | edc023ca | 2014-08-08 14:21:08 -0700 | [diff] [blame] | 215 | * @new_fragment: number of new allocated fragment(s) |
| 216 | * @required: how many fragment(s) we require |
| 217 | * @err: we set it if something wrong |
| 218 | * @phys: pointer to where we save physical number of new allocated fragments, |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 219 | * NULL if we allocate not data(indirect blocks for example). |
Fabian Frederick | edc023ca | 2014-08-08 14:21:08 -0700 | [diff] [blame] | 220 | * @new: we set it if we allocate new block |
| 221 | * @locked_page: for ufs_new_fragments() |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 222 | */ |
| 223 | static struct buffer_head * |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 224 | ufs_inode_getfrag(struct inode *inode, u64 fragment, |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 225 | sector_t new_fragment, unsigned int required, int *err, |
| 226 | long *phys, int *new, struct page *locked_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | { |
| 228 | struct ufs_inode_info *ufsi = UFS_I(inode); |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 229 | struct super_block *sb = inode->i_sb; |
| 230 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | struct buffer_head * result; |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 232 | unsigned blockoff, lastblockoff; |
| 233 | u64 tmp, goal, lastfrag, block, lastblock; |
| 234 | void *p, *p2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 236 | UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, required %u, " |
| 237 | "metadata %d\n", inode->i_ino, (unsigned long long)fragment, |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 238 | (unsigned long long)new_fragment, required, !phys); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | /* TODO : to be done for write support |
| 241 | if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
| 242 | goto ufs2; |
| 243 | */ |
| 244 | |
| 245 | block = ufs_fragstoblks (fragment); |
| 246 | blockoff = ufs_fragnum (fragment); |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 247 | p = ufs_get_direct_data_ptr(uspi, ufsi, block); |
| 248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | goal = 0; |
| 250 | |
| 251 | repeat: |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 252 | tmp = ufs_data_ptr_to_cpu(sb, p); |
| 253 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | lastfrag = ufsi->i_lastfrag; |
| 255 | if (tmp && fragment < lastfrag) { |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 256 | if (!phys) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 258 | if (tmp == ufs_data_ptr_to_cpu(sb, p)) { |
| 259 | UFSD("EXIT, result %llu\n", |
| 260 | (unsigned long long)tmp + blockoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | return result; |
| 262 | } |
| 263 | brelse (result); |
| 264 | goto repeat; |
| 265 | } else { |
Evgeniy Dushistov | 4b25a37 | 2007-03-16 13:38:09 -0800 | [diff] [blame] | 266 | *phys = uspi->s_sbbase + tmp + blockoff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | return NULL; |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | lastblock = ufs_fragstoblks (lastfrag); |
| 272 | lastblockoff = ufs_fragnum (lastfrag); |
| 273 | /* |
| 274 | * We will extend file into new block beyond last allocated block |
| 275 | */ |
| 276 | if (lastblock < block) { |
| 277 | /* |
| 278 | * We must reallocate last allocated block |
| 279 | */ |
| 280 | if (lastblockoff) { |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 281 | p2 = ufs_get_direct_data_ptr(uspi, ufsi, lastblock); |
| 282 | tmp = ufs_new_fragments(inode, p2, lastfrag, |
| 283 | ufs_data_ptr_to_cpu(sb, p2), |
| 284 | uspi->s_fpb - lastblockoff, |
| 285 | err, locked_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | if (!tmp) { |
| 287 | if (lastfrag != ufsi->i_lastfrag) |
| 288 | goto repeat; |
| 289 | else |
| 290 | return NULL; |
| 291 | } |
| 292 | lastfrag = ufsi->i_lastfrag; |
| 293 | |
| 294 | } |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 295 | tmp = ufs_data_ptr_to_cpu(sb, |
| 296 | ufs_get_direct_data_ptr(uspi, ufsi, |
| 297 | lastblock)); |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 298 | if (tmp) |
| 299 | goal = tmp + uspi->s_fpb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | tmp = ufs_new_fragments (inode, p, fragment - blockoff, |
Evgeniy Dushistov | 6ef4d6b | 2006-06-25 05:47:20 -0700 | [diff] [blame] | 301 | goal, required + blockoff, |
Evgeniy Dushistov | a685e26 | 2007-01-29 13:19:54 -0800 | [diff] [blame] | 302 | err, |
| 303 | phys != NULL ? locked_page : NULL); |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 304 | } else if (lastblock == block) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | /* |
| 306 | * We will extend last allocated block |
| 307 | */ |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 308 | tmp = ufs_new_fragments(inode, p, fragment - |
| 309 | (blockoff - lastblockoff), |
| 310 | ufs_data_ptr_to_cpu(sb, p), |
| 311 | required + (blockoff - lastblockoff), |
Evgeniy Dushistov | a685e26 | 2007-01-29 13:19:54 -0800 | [diff] [blame] | 312 | err, phys != NULL ? locked_page : NULL); |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 313 | } else /* (lastblock > block) */ { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | /* |
| 315 | * We will allocate new block before last allocated block |
| 316 | */ |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 317 | if (block) { |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 318 | tmp = ufs_data_ptr_to_cpu(sb, |
| 319 | ufs_get_direct_data_ptr(uspi, ufsi, block - 1)); |
Evgeniy Dushistov | c37336b | 2006-08-27 01:23:45 -0700 | [diff] [blame] | 320 | if (tmp) |
| 321 | goal = tmp + uspi->s_fpb; |
| 322 | } |
Evgeniy Dushistov | 6ef4d6b | 2006-06-25 05:47:20 -0700 | [diff] [blame] | 323 | tmp = ufs_new_fragments(inode, p, fragment - blockoff, |
Evgeniy Dushistov | a685e26 | 2007-01-29 13:19:54 -0800 | [diff] [blame] | 324 | goal, uspi->s_fpb, err, |
| 325 | phys != NULL ? locked_page : NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | } |
| 327 | if (!tmp) { |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 328 | if ((!blockoff && ufs_data_ptr_to_cpu(sb, p)) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | (blockoff && lastfrag != ufsi->i_lastfrag)) |
| 330 | goto repeat; |
| 331 | *err = -ENOSPC; |
| 332 | return NULL; |
| 333 | } |
| 334 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 335 | if (!phys) { |
Evgeniy Dushistov | 4b25a37 | 2007-03-16 13:38:09 -0800 | [diff] [blame] | 336 | result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | } else { |
Evgeniy Dushistov | 4b25a37 | 2007-03-16 13:38:09 -0800 | [diff] [blame] | 338 | *phys = uspi->s_sbbase + tmp + blockoff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | result = NULL; |
| 340 | *err = 0; |
| 341 | *new = 1; |
| 342 | } |
| 343 | |
| 344 | inode->i_ctime = CURRENT_TIME_SEC; |
| 345 | if (IS_SYNC(inode)) |
| 346 | ufs_sync_inode (inode); |
| 347 | mark_inode_dirty(inode); |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 348 | UFSD("EXIT, result %llu\n", (unsigned long long)tmp + blockoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | return result; |
| 350 | |
| 351 | /* This part : To be implemented .... |
| 352 | Required only for writing, not required for READ-ONLY. |
| 353 | ufs2: |
| 354 | |
| 355 | u2_block = ufs_fragstoblks(fragment); |
| 356 | u2_blockoff = ufs_fragnum(fragment); |
| 357 | p = ufsi->i_u1.u2_i_data + block; |
| 358 | goal = 0; |
| 359 | |
| 360 | repeat2: |
| 361 | tmp = fs32_to_cpu(sb, *p); |
| 362 | lastfrag = ufsi->i_lastfrag; |
| 363 | |
| 364 | */ |
| 365 | } |
| 366 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 367 | /** |
| 368 | * ufs_inode_getblock() - allocate new block |
Fabian Frederick | edc023ca | 2014-08-08 14:21:08 -0700 | [diff] [blame] | 369 | * @inode: pointer to inode |
| 370 | * @bh: pointer to block which hold "pointer" to new allocated block |
| 371 | * @fragment: number of `fragment' which hold pointer |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 372 | * to new allocated block |
Fabian Frederick | edc023ca | 2014-08-08 14:21:08 -0700 | [diff] [blame] | 373 | * @new_fragment: number of new allocated fragment |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 374 | * (block will hold this fragment and also uspi->s_fpb-1) |
Fabian Frederick | edc023ca | 2014-08-08 14:21:08 -0700 | [diff] [blame] | 375 | * @err: see ufs_inode_getfrag() |
| 376 | * @phys: see ufs_inode_getfrag() |
| 377 | * @new: see ufs_inode_getfrag() |
| 378 | * @locked_page: see ufs_inode_getfrag() |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 379 | */ |
| 380 | static struct buffer_head * |
| 381 | ufs_inode_getblock(struct inode *inode, struct buffer_head *bh, |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 382 | u64 fragment, sector_t new_fragment, int *err, |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 383 | long *phys, int *new, struct page *locked_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | { |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 385 | struct super_block *sb = inode->i_sb; |
| 386 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | struct buffer_head * result; |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 388 | unsigned blockoff; |
| 389 | u64 tmp, goal, block; |
| 390 | void *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | block = ufs_fragstoblks (fragment); |
| 393 | blockoff = ufs_fragnum (fragment); |
| 394 | |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 395 | UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, metadata %d\n", |
| 396 | inode->i_ino, (unsigned long long)fragment, |
| 397 | (unsigned long long)new_fragment, !phys); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | |
| 399 | result = NULL; |
| 400 | if (!bh) |
| 401 | goto out; |
| 402 | if (!buffer_uptodate(bh)) { |
| 403 | ll_rw_block (READ, 1, &bh); |
| 404 | wait_on_buffer (bh); |
| 405 | if (!buffer_uptodate(bh)) |
| 406 | goto out; |
| 407 | } |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 408 | if (uspi->fs_magic == UFS2_MAGIC) |
| 409 | p = (__fs64 *)bh->b_data + block; |
| 410 | else |
| 411 | p = (__fs32 *)bh->b_data + block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | repeat: |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 413 | tmp = ufs_data_ptr_to_cpu(sb, p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | if (tmp) { |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 415 | if (!phys) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 417 | if (tmp == ufs_data_ptr_to_cpu(sb, p)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | goto out; |
| 419 | brelse (result); |
| 420 | goto repeat; |
| 421 | } else { |
Evgeniy Dushistov | 4b25a37 | 2007-03-16 13:38:09 -0800 | [diff] [blame] | 422 | *phys = uspi->s_sbbase + tmp + blockoff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | goto out; |
| 424 | } |
| 425 | } |
| 426 | |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 427 | if (block && (uspi->fs_magic == UFS2_MAGIC ? |
| 428 | (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[block-1])) : |
| 429 | (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[block-1])))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | goal = tmp + uspi->s_fpb; |
| 431 | else |
| 432 | goal = bh->b_blocknr + uspi->s_fpb; |
Evgeniy Dushistov | 6ef4d6b | 2006-06-25 05:47:20 -0700 | [diff] [blame] | 433 | tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, |
| 434 | uspi->s_fpb, err, locked_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | if (!tmp) { |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 436 | if (ufs_data_ptr_to_cpu(sb, p)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | goto repeat; |
| 438 | goto out; |
| 439 | } |
| 440 | |
Evgeniy Dushistov | c9a27b5 | 2006-06-25 05:47:19 -0700 | [diff] [blame] | 441 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 442 | if (!phys) { |
Evgeniy Dushistov | 4b25a37 | 2007-03-16 13:38:09 -0800 | [diff] [blame] | 443 | result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | } else { |
Evgeniy Dushistov | 4b25a37 | 2007-03-16 13:38:09 -0800 | [diff] [blame] | 445 | *phys = uspi->s_sbbase + tmp + blockoff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | *new = 1; |
| 447 | } |
| 448 | |
| 449 | mark_buffer_dirty(bh); |
| 450 | if (IS_SYNC(inode)) |
| 451 | sync_dirty_buffer(bh); |
| 452 | inode->i_ctime = CURRENT_TIME_SEC; |
| 453 | mark_inode_dirty(inode); |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 454 | UFSD("result %llu\n", (unsigned long long)tmp + blockoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | out: |
| 456 | brelse (bh); |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 457 | UFSD("EXIT\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | return result; |
| 459 | } |
| 460 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 461 | /** |
Alessio Igor Bogani | 7422caa | 2011-04-08 19:33:07 +0200 | [diff] [blame] | 462 | * ufs_getfrag_block() - `get_block_t' function, interface between UFS and |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 463 | * readpage, writepage and so on |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | */ |
| 465 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 466 | 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] | 467 | { |
| 468 | struct super_block * sb = inode->i_sb; |
Arnd Bergmann | 788257d | 2011-01-24 10:14:12 +0100 | [diff] [blame] | 469 | struct ufs_sb_info * sbi = UFS_SB(sb); |
| 470 | struct ufs_sb_private_info * uspi = sbi->s_uspi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | struct buffer_head * bh; |
| 472 | int ret, err, new; |
| 473 | unsigned long ptr,phys; |
| 474 | u64 phys64 = 0; |
| 475 | |
| 476 | if (!create) { |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 477 | phys64 = ufs_frag_map(inode, fragment); |
Andrew Morton | 7256d81 | 2006-06-29 02:24:29 -0700 | [diff] [blame] | 478 | UFSD("phys64 = %llu\n", (unsigned long long)phys64); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | if (phys64) |
| 480 | map_bh(bh_result, sb, phys64); |
| 481 | return 0; |
| 482 | } |
| 483 | |
| 484 | /* This code entered only while writing ....? */ |
| 485 | |
| 486 | err = -EIO; |
| 487 | new = 0; |
| 488 | ret = 0; |
| 489 | bh = NULL; |
| 490 | |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 491 | mutex_lock(&UFS_I(inode)->truncate_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 493 | 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] | 494 | if (fragment > |
| 495 | ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb) |
| 496 | << uspi->s_fpbshift)) |
| 497 | goto abort_too_big; |
| 498 | |
| 499 | err = 0; |
| 500 | ptr = fragment; |
| 501 | |
| 502 | /* |
| 503 | * ok, these macros clean the logic up a bit and make |
| 504 | * it much more readable: |
| 505 | */ |
| 506 | #define GET_INODE_DATABLOCK(x) \ |
Evgeniy Dushistov | a685e26 | 2007-01-29 13:19:54 -0800 | [diff] [blame] | 507 | ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new,\ |
| 508 | bh_result->b_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | #define GET_INODE_PTR(x) \ |
Evgeniy Dushistov | a685e26 | 2007-01-29 13:19:54 -0800 | [diff] [blame] | 510 | ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL,\ |
| 511 | bh_result->b_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | #define GET_INDIRECT_DATABLOCK(x) \ |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 513 | ufs_inode_getblock(inode, bh, x, fragment, \ |
Evgeniy Dushistov | d63b709 | 2007-01-05 16:37:04 -0800 | [diff] [blame] | 514 | &err, &phys, &new, bh_result->b_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | #define GET_INDIRECT_PTR(x) \ |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 516 | ufs_inode_getblock(inode, bh, x, fragment, \ |
Evgeniy Dushistov | d63b709 | 2007-01-05 16:37:04 -0800 | [diff] [blame] | 517 | &err, NULL, NULL, NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | |
| 519 | if (ptr < UFS_NDIR_FRAGMENT) { |
| 520 | bh = GET_INODE_DATABLOCK(ptr); |
| 521 | goto out; |
| 522 | } |
| 523 | ptr -= UFS_NDIR_FRAGMENT; |
| 524 | if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) { |
| 525 | bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift)); |
| 526 | goto get_indirect; |
| 527 | } |
| 528 | ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift); |
| 529 | if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) { |
| 530 | bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift)); |
| 531 | goto get_double; |
| 532 | } |
| 533 | ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift); |
| 534 | bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift)); |
| 535 | bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask); |
| 536 | get_double: |
| 537 | bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask); |
| 538 | get_indirect: |
| 539 | bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask); |
| 540 | |
| 541 | #undef GET_INODE_DATABLOCK |
| 542 | #undef GET_INODE_PTR |
| 543 | #undef GET_INDIRECT_DATABLOCK |
| 544 | #undef GET_INDIRECT_PTR |
| 545 | |
| 546 | out: |
| 547 | if (err) |
| 548 | goto abort; |
| 549 | if (new) |
| 550 | set_buffer_new(bh_result); |
| 551 | map_bh(bh_result, sb, phys); |
| 552 | abort: |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame^] | 553 | mutex_unlock(&UFS_I(inode)->truncate_mutex); |
Arnd Bergmann | 788257d | 2011-01-24 10:14:12 +0100 | [diff] [blame] | 554 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | return err; |
| 556 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | abort_too_big: |
| 558 | ufs_warning(sb, "ufs_get_block", "block > big"); |
| 559 | goto abort; |
| 560 | } |
| 561 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | static int ufs_writepage(struct page *page, struct writeback_control *wbc) |
| 563 | { |
| 564 | return block_write_full_page(page,ufs_getfrag_block,wbc); |
| 565 | } |
Nick Piggin | 82b9d1d | 2007-10-16 01:25:19 -0700 | [diff] [blame] | 566 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | static int ufs_readpage(struct file *file, struct page *page) |
| 568 | { |
| 569 | return block_read_full_page(page,ufs_getfrag_block); |
| 570 | } |
Nick Piggin | 82b9d1d | 2007-10-16 01:25:19 -0700 | [diff] [blame] | 571 | |
Christoph Hellwig | f4e420d | 2010-06-04 11:29:56 +0200 | [diff] [blame] | 572 | int ufs_prepare_chunk(struct page *page, loff_t pos, unsigned len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | { |
Christoph Hellwig | 6e1db88 | 2010-06-04 11:29:57 +0200 | [diff] [blame] | 574 | return __block_write_begin(page, pos, len, ufs_getfrag_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | } |
Nick Piggin | 82b9d1d | 2007-10-16 01:25:19 -0700 | [diff] [blame] | 576 | |
Marco Stornelli | 83f6e37 | 2012-12-15 11:45:14 +0100 | [diff] [blame] | 577 | static void ufs_write_failed(struct address_space *mapping, loff_t to) |
| 578 | { |
| 579 | struct inode *inode = mapping->host; |
| 580 | |
Al Viro | 3b7a3a0 | 2015-06-16 18:06:40 -0400 | [diff] [blame] | 581 | if (to > inode->i_size) { |
Kirill A. Shutemov | 7caef26 | 2013-09-12 15:13:56 -0700 | [diff] [blame] | 582 | truncate_pagecache(inode, inode->i_size); |
Al Viro | 3b7a3a0 | 2015-06-16 18:06:40 -0400 | [diff] [blame] | 583 | ufs_truncate_blocks(inode); |
| 584 | } |
Marco Stornelli | 83f6e37 | 2012-12-15 11:45:14 +0100 | [diff] [blame] | 585 | } |
| 586 | |
Nick Piggin | 82b9d1d | 2007-10-16 01:25:19 -0700 | [diff] [blame] | 587 | static int ufs_write_begin(struct file *file, struct address_space *mapping, |
| 588 | loff_t pos, unsigned len, unsigned flags, |
| 589 | struct page **pagep, void **fsdata) |
| 590 | { |
Christoph Hellwig | 155130a | 2010-06-04 11:29:58 +0200 | [diff] [blame] | 591 | int ret; |
| 592 | |
| 593 | ret = block_write_begin(mapping, pos, len, flags, pagep, |
Christoph Hellwig | f4e420d | 2010-06-04 11:29:56 +0200 | [diff] [blame] | 594 | ufs_getfrag_block); |
Marco Stornelli | 83f6e37 | 2012-12-15 11:45:14 +0100 | [diff] [blame] | 595 | if (unlikely(ret)) |
| 596 | ufs_write_failed(mapping, pos + len); |
Christoph Hellwig | 155130a | 2010-06-04 11:29:58 +0200 | [diff] [blame] | 597 | |
| 598 | return ret; |
Nick Piggin | 82b9d1d | 2007-10-16 01:25:19 -0700 | [diff] [blame] | 599 | } |
| 600 | |
Al Viro | 3b7a3a0 | 2015-06-16 18:06:40 -0400 | [diff] [blame] | 601 | static int ufs_write_end(struct file *file, struct address_space *mapping, |
| 602 | loff_t pos, unsigned len, unsigned copied, |
| 603 | struct page *page, void *fsdata) |
| 604 | { |
| 605 | int ret; |
| 606 | |
| 607 | ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); |
| 608 | if (ret < len) |
| 609 | ufs_write_failed(mapping, pos + len); |
| 610 | return ret; |
| 611 | } |
| 612 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | static sector_t ufs_bmap(struct address_space *mapping, sector_t block) |
| 614 | { |
| 615 | return generic_block_bmap(mapping,block,ufs_getfrag_block); |
| 616 | } |
Nick Piggin | 82b9d1d | 2007-10-16 01:25:19 -0700 | [diff] [blame] | 617 | |
Christoph Hellwig | f5e54d6 | 2006-06-28 04:26:44 -0700 | [diff] [blame] | 618 | const struct address_space_operations ufs_aops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | .readpage = ufs_readpage, |
| 620 | .writepage = ufs_writepage, |
Nick Piggin | 82b9d1d | 2007-10-16 01:25:19 -0700 | [diff] [blame] | 621 | .write_begin = ufs_write_begin, |
Al Viro | 3b7a3a0 | 2015-06-16 18:06:40 -0400 | [diff] [blame] | 622 | .write_end = ufs_write_end, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | .bmap = ufs_bmap |
| 624 | }; |
| 625 | |
Evgeniy Dushistov | 826843a | 2006-06-25 05:47:21 -0700 | [diff] [blame] | 626 | static void ufs_set_inode_ops(struct inode *inode) |
| 627 | { |
| 628 | if (S_ISREG(inode->i_mode)) { |
| 629 | inode->i_op = &ufs_file_inode_operations; |
| 630 | inode->i_fop = &ufs_file_operations; |
| 631 | inode->i_mapping->a_ops = &ufs_aops; |
| 632 | } else if (S_ISDIR(inode->i_mode)) { |
| 633 | inode->i_op = &ufs_dir_inode_operations; |
| 634 | inode->i_fop = &ufs_dir_operations; |
| 635 | inode->i_mapping->a_ops = &ufs_aops; |
| 636 | } else if (S_ISLNK(inode->i_mode)) { |
Al Viro | 4b8061a | 2015-05-02 10:28:56 -0400 | [diff] [blame] | 637 | if (!inode->i_blocks) { |
Evgeniy Dushistov | 826843a | 2006-06-25 05:47:21 -0700 | [diff] [blame] | 638 | inode->i_op = &ufs_fast_symlink_inode_operations; |
Al Viro | 4b8061a | 2015-05-02 10:28:56 -0400 | [diff] [blame] | 639 | inode->i_link = (char *)UFS_I(inode)->i_u1.i_symlink; |
| 640 | } else { |
Dmitry Monakhov | 311b9549 | 2010-04-15 00:56:58 +0200 | [diff] [blame] | 641 | inode->i_op = &ufs_symlink_inode_operations; |
Evgeniy Dushistov | 826843a | 2006-06-25 05:47:21 -0700 | [diff] [blame] | 642 | inode->i_mapping->a_ops = &ufs_aops; |
| 643 | } |
| 644 | } else |
| 645 | init_special_inode(inode, inode->i_mode, |
| 646 | ufs_get_inode_dev(inode->i_sb, UFS_I(inode))); |
| 647 | } |
| 648 | |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 649 | static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | { |
| 651 | struct ufs_inode_info *ufsi = UFS_I(inode); |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 652 | struct super_block *sb = inode->i_sb; |
Al Viro | 6a9a06d | 2011-07-26 02:49:13 -0400 | [diff] [blame] | 653 | umode_t mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | |
| 655 | /* |
| 656 | * Copy data to the in-core inode. |
| 657 | */ |
| 658 | inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); |
Miklos Szeredi | bfe8684 | 2011-10-28 14:13:29 +0200 | [diff] [blame] | 659 | set_nlink(inode, fs16_to_cpu(sb, ufs_inode->ui_nlink)); |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 660 | if (inode->i_nlink == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 662 | return -1; |
| 663 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | |
| 665 | /* |
| 666 | * Linux now has 32-bit uid and gid, so we can support EFT. |
| 667 | */ |
Eric W. Biederman | 72235465 | 2012-02-10 12:21:22 -0800 | [diff] [blame] | 668 | i_uid_write(inode, ufs_get_inode_uid(sb, ufs_inode)); |
| 669 | i_gid_write(inode, ufs_get_inode_gid(sb, ufs_inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | |
| 671 | inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); |
| 672 | inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); |
| 673 | inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); |
| 674 | inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); |
| 675 | inode->i_mtime.tv_nsec = 0; |
| 676 | inode->i_atime.tv_nsec = 0; |
| 677 | inode->i_ctime.tv_nsec = 0; |
| 678 | inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 679 | inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); |
| 682 | 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] | 683 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | |
| 685 | if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 686 | memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr, |
| 687 | sizeof(ufs_inode->ui_u2.ui_addr)); |
Evgeniy Dushistov | dd187a2 | 2006-06-25 05:47:25 -0700 | [diff] [blame] | 688 | } else { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 689 | memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink, |
Duane Griffin | b12903f | 2009-01-08 22:43:50 +0000 | [diff] [blame] | 690 | sizeof(ufs_inode->ui_u2.ui_symlink) - 1); |
| 691 | ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | } |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 693 | return 0; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 694 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 696 | static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode) |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 697 | { |
| 698 | struct ufs_inode_info *ufsi = UFS_I(inode); |
| 699 | struct super_block *sb = inode->i_sb; |
Al Viro | 6a9a06d | 2011-07-26 02:49:13 -0400 | [diff] [blame] | 700 | umode_t mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 702 | UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | /* |
| 704 | * Copy data to the in-core inode. |
| 705 | */ |
| 706 | inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); |
Miklos Szeredi | bfe8684 | 2011-10-28 14:13:29 +0200 | [diff] [blame] | 707 | set_nlink(inode, fs16_to_cpu(sb, ufs2_inode->ui_nlink)); |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 708 | if (inode->i_nlink == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 710 | return -1; |
| 711 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | |
| 713 | /* |
| 714 | * Linux now has 32-bit uid and gid, so we can support EFT. |
| 715 | */ |
Eric W. Biederman | 72235465 | 2012-02-10 12:21:22 -0800 | [diff] [blame] | 716 | i_uid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_uid)); |
| 717 | i_gid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_gid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | |
| 719 | inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); |
Evgeniy Dushistov | 2189850 | 2007-03-16 13:38:07 -0800 | [diff] [blame] | 720 | inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime); |
| 721 | inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime); |
| 722 | inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime); |
| 723 | inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec); |
| 724 | inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec); |
| 725 | inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 727 | inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | /* |
| 730 | ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); |
| 731 | ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); |
| 732 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | |
| 734 | if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 735 | memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr, |
| 736 | sizeof(ufs2_inode->ui_u2.ui_addr)); |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 737 | } else { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 738 | memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink, |
Duane Griffin | b12903f | 2009-01-08 22:43:50 +0000 | [diff] [blame] | 739 | sizeof(ufs2_inode->ui_u2.ui_symlink) - 1); |
| 740 | ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | } |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 742 | return 0; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 743 | } |
| 744 | |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 745 | struct inode *ufs_iget(struct super_block *sb, unsigned long ino) |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 746 | { |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 747 | struct ufs_inode_info *ufsi; |
| 748 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 749 | struct buffer_head * bh; |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 750 | struct inode *inode; |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 751 | int err; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 752 | |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 753 | UFSD("ENTER, ino %lu\n", ino); |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 754 | |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 755 | if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) { |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 756 | ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n", |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 757 | ino); |
| 758 | return ERR_PTR(-EIO); |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 759 | } |
| 760 | |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 761 | inode = iget_locked(sb, ino); |
| 762 | if (!inode) |
| 763 | return ERR_PTR(-ENOMEM); |
| 764 | if (!(inode->i_state & I_NEW)) |
| 765 | return inode; |
| 766 | |
| 767 | ufsi = UFS_I(inode); |
| 768 | |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 769 | bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); |
| 770 | if (!bh) { |
| 771 | ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n", |
| 772 | inode->i_ino); |
| 773 | goto bad_inode; |
| 774 | } |
| 775 | if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { |
| 776 | struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; |
| 777 | |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 778 | err = ufs2_read_inode(inode, |
| 779 | ufs2_inode + ufs_inotofsbo(inode->i_ino)); |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 780 | } else { |
| 781 | struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data; |
| 782 | |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 783 | err = ufs1_read_inode(inode, |
| 784 | ufs_inode + ufs_inotofsbo(inode->i_ino)); |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 785 | } |
| 786 | |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 787 | if (err) |
| 788 | goto bad_inode; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 789 | inode->i_version++; |
| 790 | ufsi->i_lastfrag = |
| 791 | (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; |
| 792 | ufsi->i_dir_start_lookup = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | ufsi->i_osync = 0; |
| 794 | |
Evgeniy Dushistov | 826843a | 2006-06-25 05:47:21 -0700 | [diff] [blame] | 795 | ufs_set_inode_ops(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | |
| 797 | brelse(bh); |
| 798 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 799 | UFSD("EXIT\n"); |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 800 | unlock_new_inode(inode); |
| 801 | return inode; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 802 | |
| 803 | bad_inode: |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 804 | iget_failed(inode); |
| 805 | return ERR_PTR(-EIO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | } |
| 807 | |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 808 | static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | { |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 810 | struct super_block *sb = inode->i_sb; |
| 811 | struct ufs_inode_info *ufsi = UFS_I(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | |
| 813 | ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); |
| 814 | ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); |
| 815 | |
Eric W. Biederman | 72235465 | 2012-02-10 12:21:22 -0800 | [diff] [blame] | 816 | ufs_set_inode_uid(sb, ufs_inode, i_uid_read(inode)); |
| 817 | ufs_set_inode_gid(sb, ufs_inode, i_gid_read(inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | |
| 819 | ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); |
| 820 | ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); |
| 821 | ufs_inode->ui_atime.tv_usec = 0; |
| 822 | ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); |
| 823 | ufs_inode->ui_ctime.tv_usec = 0; |
| 824 | ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); |
| 825 | ufs_inode->ui_mtime.tv_usec = 0; |
| 826 | ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); |
| 827 | ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 828 | ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 830 | if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow); |
| 832 | ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag); |
| 833 | } |
| 834 | |
| 835 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { |
| 836 | /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ |
| 837 | ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0]; |
| 838 | } else if (inode->i_blocks) { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 839 | memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data, |
| 840 | sizeof(ufs_inode->ui_u2.ui_addr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | } |
| 842 | else { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 843 | memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, |
| 844 | sizeof(ufs_inode->ui_u2.ui_symlink)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | } |
| 846 | |
| 847 | if (!inode->i_nlink) |
| 848 | memset (ufs_inode, 0, sizeof(struct ufs_inode)); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 849 | } |
| 850 | |
| 851 | static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode) |
| 852 | { |
| 853 | struct super_block *sb = inode->i_sb; |
| 854 | struct ufs_inode_info *ufsi = UFS_I(inode); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 855 | |
| 856 | UFSD("ENTER\n"); |
| 857 | ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); |
| 858 | ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); |
| 859 | |
Eric W. Biederman | 72235465 | 2012-02-10 12:21:22 -0800 | [diff] [blame] | 860 | ufs_inode->ui_uid = cpu_to_fs32(sb, i_uid_read(inode)); |
| 861 | ufs_inode->ui_gid = cpu_to_fs32(sb, i_gid_read(inode)); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 862 | |
| 863 | ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); |
Evgeniy Dushistov | 2189850 | 2007-03-16 13:38:07 -0800 | [diff] [blame] | 864 | ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec); |
| 865 | ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec); |
| 866 | ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec); |
| 867 | ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec); |
| 868 | ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec); |
| 869 | ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 870 | |
| 871 | ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks); |
| 872 | ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); |
| 873 | ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); |
| 874 | |
| 875 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { |
| 876 | /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ |
| 877 | ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0]; |
| 878 | } else if (inode->i_blocks) { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 879 | memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data, |
| 880 | sizeof(ufs_inode->ui_u2.ui_addr)); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 881 | } else { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 882 | memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, |
| 883 | sizeof(ufs_inode->ui_u2.ui_symlink)); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 884 | } |
| 885 | |
| 886 | if (!inode->i_nlink) |
| 887 | memset (ufs_inode, 0, sizeof(struct ufs2_inode)); |
| 888 | UFSD("EXIT\n"); |
| 889 | } |
| 890 | |
| 891 | static int ufs_update_inode(struct inode * inode, int do_sync) |
| 892 | { |
| 893 | struct super_block *sb = inode->i_sb; |
| 894 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
| 895 | struct buffer_head * bh; |
| 896 | |
| 897 | UFSD("ENTER, ino %lu\n", inode->i_ino); |
| 898 | |
| 899 | if (inode->i_ino < UFS_ROOTINO || |
| 900 | inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { |
| 901 | ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); |
| 902 | return -1; |
| 903 | } |
| 904 | |
| 905 | bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); |
| 906 | if (!bh) { |
| 907 | ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); |
| 908 | return -1; |
| 909 | } |
| 910 | if (uspi->fs_magic == UFS2_MAGIC) { |
| 911 | struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; |
| 912 | |
| 913 | ufs2_update_inode(inode, |
| 914 | ufs2_inode + ufs_inotofsbo(inode->i_ino)); |
| 915 | } else { |
| 916 | struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data; |
| 917 | |
| 918 | ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); |
| 919 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | |
| 921 | mark_buffer_dirty(bh); |
| 922 | if (do_sync) |
| 923 | sync_dirty_buffer(bh); |
| 924 | brelse (bh); |
| 925 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 926 | UFSD("EXIT\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | return 0; |
| 928 | } |
| 929 | |
Christoph Hellwig | a9185b4 | 2010-03-05 09:21:37 +0100 | [diff] [blame] | 930 | int ufs_write_inode(struct inode *inode, struct writeback_control *wbc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | { |
Al Viro | f3e0f3d | 2015-06-16 02:35:14 -0400 | [diff] [blame] | 932 | return ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | } |
| 934 | |
| 935 | int ufs_sync_inode (struct inode *inode) |
| 936 | { |
| 937 | return ufs_update_inode (inode, 1); |
| 938 | } |
| 939 | |
Al Viro | 58e8268 | 2010-06-05 19:40:56 -0400 | [diff] [blame] | 940 | void ufs_evict_inode(struct inode * inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | { |
Al Viro | 58e8268 | 2010-06-05 19:40:56 -0400 | [diff] [blame] | 942 | int want_delete = 0; |
| 943 | |
| 944 | if (!inode->i_nlink && !is_bad_inode(inode)) |
| 945 | want_delete = 1; |
Evgeniy Dushistov | 10e5dce | 2006-07-01 04:36:24 -0700 | [diff] [blame] | 946 | |
Johannes Weiner | 91b0abe | 2014-04-03 14:47:49 -0700 | [diff] [blame] | 947 | truncate_inode_pages_final(&inode->i_data); |
Al Viro | 58e8268 | 2010-06-05 19:40:56 -0400 | [diff] [blame] | 948 | if (want_delete) { |
Al Viro | 58e8268 | 2010-06-05 19:40:56 -0400 | [diff] [blame] | 949 | inode->i_size = 0; |
Al Viro | d622f167 | 2015-06-16 18:04:16 -0400 | [diff] [blame] | 950 | if (inode->i_blocks) |
| 951 | ufs_truncate_blocks(inode); |
Al Viro | 58e8268 | 2010-06-05 19:40:56 -0400 | [diff] [blame] | 952 | } |
| 953 | |
| 954 | invalidate_inode_buffers(inode); |
Jan Kara | dbd5768 | 2012-05-03 14:48:02 +0200 | [diff] [blame] | 955 | clear_inode(inode); |
Al Viro | 58e8268 | 2010-06-05 19:40:56 -0400 | [diff] [blame] | 956 | |
Al Viro | f3e0f3d | 2015-06-16 02:35:14 -0400 | [diff] [blame] | 957 | if (want_delete) |
Alexey Khoroshilov | 9ef7db7 | 2014-09-02 11:40:17 +0400 | [diff] [blame] | 958 | ufs_free_inode(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | } |