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 | |
Al Viro | 4e3911f | 2015-06-04 14:13:14 -0400 | [diff] [blame] | 44 | static int ufs_block_to_path(struct inode *inode, sector_t i_block, unsigned offsets[4]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | 4b7068c | 2015-06-04 14:27:23 -0400 | [diff] [blame] | 122 | static u64 ufs_frag_map(struct inode *inode, unsigned offsets[4], int depth) |
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; |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 129 | Indirect chain[4], *q = chain; |
Al Viro | 4b7068c | 2015-06-04 14:27:23 -0400 | [diff] [blame] | 130 | unsigned *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | unsigned flags = UFS_SB(sb)->s_flags; |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 132 | u64 res = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | |
Andrew Morton | 7256d81 | 2006-06-29 02:24:29 -0700 | [diff] [blame] | 134 | UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n", |
| 135 | uspi->s_fpbshift, uspi->s_apbmask, |
| 136 | (unsigned long long)mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | |
| 138 | if (depth == 0) |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 139 | goto no_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 141 | again: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | p = offsets; |
| 143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
| 145 | goto ufs2; |
| 146 | |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 147 | if (!grow_chain32(ufsi, NULL, &ufsi->i_u1.i_data[*p++], chain, q)) |
| 148 | goto changed; |
| 149 | if (!q->key32) |
| 150 | goto no_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | while (--depth) { |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 152 | __fs32 *ptr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | struct buffer_head *bh; |
Al Viro | 4e3911f | 2015-06-04 14:13:14 -0400 | [diff] [blame] | 154 | unsigned n = *p++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 156 | bh = sb_bread(sb, uspi->s_sbbase + |
| 157 | fs32_to_cpu(sb, q->key32) + (n>>shift)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | if (!bh) |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 159 | goto no_block; |
| 160 | ptr = (__fs32 *)bh->b_data + (n & mask); |
| 161 | if (!grow_chain32(ufsi, bh, ptr, chain, ++q)) |
| 162 | goto changed; |
| 163 | if (!q->key32) |
| 164 | goto no_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | } |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 166 | res = fs32_to_cpu(sb, q->key32); |
| 167 | goto found; |
| 168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | ufs2: |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 170 | if (!grow_chain64(ufsi, NULL, &ufsi->i_u1.u2_i_data[*p++], chain, q)) |
| 171 | goto changed; |
| 172 | if (!q->key64) |
| 173 | goto no_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | |
| 175 | while (--depth) { |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 176 | __fs64 *ptr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | struct buffer_head *bh; |
Al Viro | 4e3911f | 2015-06-04 14:13:14 -0400 | [diff] [blame] | 178 | unsigned n = *p++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 180 | bh = sb_bread(sb, uspi->s_sbbase + |
| 181 | fs64_to_cpu(sb, q->key64) + (n>>shift)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | if (!bh) |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 183 | goto no_block; |
| 184 | ptr = (__fs64 *)bh->b_data + (n & mask); |
| 185 | if (!grow_chain64(ufsi, bh, ptr, chain, ++q)) |
| 186 | goto changed; |
| 187 | if (!q->key64) |
| 188 | goto no_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | } |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 190 | res = fs64_to_cpu(sb, q->key64); |
| 191 | found: |
Al Viro | 4b7068c | 2015-06-04 14:27:23 -0400 | [diff] [blame] | 192 | res += uspi->s_sbbase; |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 193 | no_block: |
| 194 | while (q > chain) { |
| 195 | brelse(q->bh); |
| 196 | q--; |
| 197 | } |
| 198 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 200 | changed: |
| 201 | while (q > chain) { |
| 202 | brelse(q->bh); |
| 203 | q--; |
| 204 | } |
| 205 | goto again; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | } |
| 207 | |
Al Viro | 0f3c129 | 2015-06-19 13:40:25 -0400 | [diff] [blame] | 208 | /* |
| 209 | * Unpacking tails: we have a file with partial final block and |
| 210 | * we had been asked to extend it. If the fragment being written |
| 211 | * is within the same block, we need to extend the tail just to cover |
| 212 | * that fragment. Otherwise the tail is extended to full block. |
| 213 | * |
| 214 | * Note that we might need to create a _new_ tail, but that will |
| 215 | * be handled elsewhere; this is strictly for resizing old |
| 216 | * ones. |
| 217 | */ |
| 218 | static bool |
| 219 | ufs_extend_tail(struct inode *inode, u64 writes_to, |
| 220 | int *err, struct page *locked_page) |
| 221 | { |
| 222 | struct ufs_inode_info *ufsi = UFS_I(inode); |
| 223 | struct super_block *sb = inode->i_sb; |
| 224 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
| 225 | unsigned lastfrag = ufsi->i_lastfrag; /* it's a short file, so unsigned is enough */ |
| 226 | unsigned block = ufs_fragstoblks(lastfrag); |
| 227 | unsigned new_size; |
| 228 | void *p; |
| 229 | u64 tmp; |
| 230 | |
| 231 | if (writes_to < (lastfrag | uspi->s_fpbmask)) |
| 232 | new_size = (writes_to & uspi->s_fpbmask) + 1; |
| 233 | else |
| 234 | new_size = uspi->s_fpb; |
| 235 | |
| 236 | p = ufs_get_direct_data_ptr(uspi, ufsi, block); |
| 237 | tmp = ufs_new_fragments(inode, p, lastfrag, ufs_data_ptr_to_cpu(sb, p), |
| 238 | new_size, err, locked_page); |
| 239 | return tmp != 0; |
| 240 | } |
| 241 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 242 | /** |
| 243 | * ufs_inode_getfrag() - allocate new fragment(s) |
Fabian Frederick | edc023ca | 2014-08-08 14:21:08 -0700 | [diff] [blame] | 244 | * @inode: pointer to inode |
Al Viro | 5336970 | 2015-06-19 13:53:52 -0400 | [diff] [blame] | 245 | * @index: number of block pointer within the inode's array. |
Fabian Frederick | edc023ca | 2014-08-08 14:21:08 -0700 | [diff] [blame] | 246 | * @new_fragment: number of new allocated fragment(s) |
Fabian Frederick | edc023ca | 2014-08-08 14:21:08 -0700 | [diff] [blame] | 247 | * @err: we set it if something wrong |
Fabian Frederick | edc023ca | 2014-08-08 14:21:08 -0700 | [diff] [blame] | 248 | * @new: we set it if we allocate new block |
| 249 | * @locked_page: for ufs_new_fragments() |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 250 | */ |
Al Viro | 177848a | 2015-06-19 00:53:06 -0400 | [diff] [blame] | 251 | static u64 |
Al Viro | 5336970 | 2015-06-19 13:53:52 -0400 | [diff] [blame] | 252 | ufs_inode_getfrag(struct inode *inode, unsigned index, |
| 253 | sector_t new_fragment, int *err, |
Al Viro | 4e317ce | 2015-06-19 14:27:10 -0400 | [diff] [blame] | 254 | int *new, struct page *locked_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | { |
| 256 | struct ufs_inode_info *ufsi = UFS_I(inode); |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 257 | struct super_block *sb = inode->i_sb; |
| 258 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
Al Viro | 5336970 | 2015-06-19 13:53:52 -0400 | [diff] [blame] | 259 | u64 tmp, goal, lastfrag; |
Al Viro | 0f3c129 | 2015-06-19 13:40:25 -0400 | [diff] [blame] | 260 | unsigned nfrags = uspi->s_fpb; |
| 261 | void *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | /* TODO : to be done for write support |
| 264 | if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
| 265 | goto ufs2; |
| 266 | */ |
| 267 | |
Al Viro | 5336970 | 2015-06-19 13:53:52 -0400 | [diff] [blame] | 268 | p = ufs_get_direct_data_ptr(uspi, ufsi, index); |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 269 | tmp = ufs_data_ptr_to_cpu(sb, p); |
Al Viro | 0f3c129 | 2015-06-19 13:40:25 -0400 | [diff] [blame] | 270 | if (tmp) |
Al Viro | bbb3eb9 | 2015-06-19 00:10:00 -0400 | [diff] [blame] | 271 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | |
Al Viro | 0f3c129 | 2015-06-19 13:40:25 -0400 | [diff] [blame] | 273 | lastfrag = ufsi->i_lastfrag; |
| 274 | |
| 275 | /* will that be a new tail? */ |
| 276 | if (new_fragment < UFS_NDIR_FRAGMENT && new_fragment >= lastfrag) |
| 277 | nfrags = (new_fragment & uspi->s_fpbmask) + 1; |
| 278 | |
| 279 | goal = 0; |
Al Viro | 5336970 | 2015-06-19 13:53:52 -0400 | [diff] [blame] | 280 | if (index) { |
Al Viro | 0f3c129 | 2015-06-19 13:40:25 -0400 | [diff] [blame] | 281 | goal = ufs_data_ptr_to_cpu(sb, |
Al Viro | 5336970 | 2015-06-19 13:53:52 -0400 | [diff] [blame] | 282 | ufs_get_direct_data_ptr(uspi, ufsi, index - 1)); |
Al Viro | 0f3c129 | 2015-06-19 13:40:25 -0400 | [diff] [blame] | 283 | if (goal) |
| 284 | goal += uspi->s_fpb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | } |
Al Viro | 5336970 | 2015-06-19 13:53:52 -0400 | [diff] [blame] | 286 | tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), |
Al Viro | 4e317ce | 2015-06-19 14:27:10 -0400 | [diff] [blame] | 287 | goal, uspi->s_fpb, err, locked_page); |
Al Viro | 0f3c129 | 2015-06-19 13:40:25 -0400 | [diff] [blame] | 288 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | if (!tmp) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | *err = -ENOSPC; |
Al Viro | 177848a | 2015-06-19 00:53:06 -0400 | [diff] [blame] | 291 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | } |
| 293 | |
Al Viro | 4e317ce | 2015-06-19 14:27:10 -0400 | [diff] [blame] | 294 | if (new) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | *new = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | inode->i_ctime = CURRENT_TIME_SEC; |
| 297 | if (IS_SYNC(inode)) |
| 298 | ufs_sync_inode (inode); |
| 299 | mark_inode_dirty(inode); |
Al Viro | bbb3eb9 | 2015-06-19 00:10:00 -0400 | [diff] [blame] | 300 | out: |
Al Viro | 177848a | 2015-06-19 00:53:06 -0400 | [diff] [blame] | 301 | return tmp + uspi->s_sbbase; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | |
| 303 | /* This part : To be implemented .... |
| 304 | Required only for writing, not required for READ-ONLY. |
| 305 | ufs2: |
| 306 | |
| 307 | u2_block = ufs_fragstoblks(fragment); |
| 308 | u2_blockoff = ufs_fragnum(fragment); |
| 309 | p = ufsi->i_u1.u2_i_data + block; |
| 310 | goal = 0; |
| 311 | |
| 312 | repeat2: |
| 313 | tmp = fs32_to_cpu(sb, *p); |
| 314 | lastfrag = ufsi->i_lastfrag; |
| 315 | |
| 316 | */ |
| 317 | } |
| 318 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 319 | /** |
| 320 | * ufs_inode_getblock() - allocate new block |
Fabian Frederick | edc023ca | 2014-08-08 14:21:08 -0700 | [diff] [blame] | 321 | * @inode: pointer to inode |
Al Viro | 619cfac | 2015-06-19 01:23:08 -0400 | [diff] [blame] | 322 | * @ind_block: block number of the indirect block |
| 323 | * @index: number of pointer within the indirect block |
Fabian Frederick | edc023ca | 2014-08-08 14:21:08 -0700 | [diff] [blame] | 324 | * @new_fragment: number of new allocated fragment |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 325 | * (block will hold this fragment and also uspi->s_fpb-1) |
Fabian Frederick | edc023ca | 2014-08-08 14:21:08 -0700 | [diff] [blame] | 326 | * @err: see ufs_inode_getfrag() |
Fabian Frederick | edc023ca | 2014-08-08 14:21:08 -0700 | [diff] [blame] | 327 | * @new: see ufs_inode_getfrag() |
| 328 | * @locked_page: see ufs_inode_getfrag() |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 329 | */ |
Al Viro | 177848a | 2015-06-19 00:53:06 -0400 | [diff] [blame] | 330 | static u64 |
Al Viro | 619cfac | 2015-06-19 01:23:08 -0400 | [diff] [blame] | 331 | ufs_inode_getblock(struct inode *inode, u64 ind_block, |
Al Viro | 721435a | 2015-06-19 01:06:21 -0400 | [diff] [blame] | 332 | unsigned index, sector_t new_fragment, int *err, |
Al Viro | 4e317ce | 2015-06-19 14:27:10 -0400 | [diff] [blame] | 333 | int *new, struct page *locked_page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | { |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 335 | struct super_block *sb = inode->i_sb; |
| 336 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
Al Viro | 619cfac | 2015-06-19 01:23:08 -0400 | [diff] [blame] | 337 | int shift = uspi->s_apbshift - uspi->s_fpbshift; |
Al Viro | 721435a | 2015-06-19 01:06:21 -0400 | [diff] [blame] | 338 | u64 tmp = 0, goal; |
Al Viro | 619cfac | 2015-06-19 01:23:08 -0400 | [diff] [blame] | 339 | struct buffer_head *bh; |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 340 | void *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | |
Al Viro | 619cfac | 2015-06-19 01:23:08 -0400 | [diff] [blame] | 342 | if (!ind_block) |
| 343 | return 0; |
| 344 | |
| 345 | bh = sb_bread(sb, ind_block + (index >> shift)); |
Al Viro | 5fbfb23 | 2015-06-19 14:10:53 -0400 | [diff] [blame] | 346 | if (unlikely(!bh)) { |
| 347 | *err = -EIO; |
Al Viro | 619cfac | 2015-06-19 01:23:08 -0400 | [diff] [blame] | 348 | return 0; |
Al Viro | 5fbfb23 | 2015-06-19 14:10:53 -0400 | [diff] [blame] | 349 | } |
Al Viro | 619cfac | 2015-06-19 01:23:08 -0400 | [diff] [blame] | 350 | |
| 351 | index &= uspi->s_apbmask >> uspi->s_fpbshift; |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 352 | if (uspi->fs_magic == UFS2_MAGIC) |
Al Viro | 721435a | 2015-06-19 01:06:21 -0400 | [diff] [blame] | 353 | p = (__fs64 *)bh->b_data + index; |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 354 | else |
Al Viro | 721435a | 2015-06-19 01:06:21 -0400 | [diff] [blame] | 355 | p = (__fs32 *)bh->b_data + index; |
Al Viro | 5a39c25 | 2015-06-18 22:39:46 -0400 | [diff] [blame] | 356 | |
Evgeniy Dushistov | 54fb996 | 2007-02-12 00:54:32 -0800 | [diff] [blame] | 357 | tmp = ufs_data_ptr_to_cpu(sb, p); |
Al Viro | bbb3eb9 | 2015-06-19 00:10:00 -0400 | [diff] [blame] | 358 | if (tmp) |
Al Viro | 5a39c25 | 2015-06-18 22:39:46 -0400 | [diff] [blame] | 359 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | |
Al Viro | 721435a | 2015-06-19 01:06:21 -0400 | [diff] [blame] | 361 | if (index && (uspi->fs_magic == UFS2_MAGIC ? |
| 362 | (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[index-1])) : |
| 363 | (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[index-1])))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | goal = tmp + uspi->s_fpb; |
| 365 | else |
| 366 | goal = bh->b_blocknr + uspi->s_fpb; |
Evgeniy Dushistov | 6ef4d6b | 2006-06-25 05:47:20 -0700 | [diff] [blame] | 367 | tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, |
| 368 | uspi->s_fpb, err, locked_page); |
Al Viro | 5a39c25 | 2015-06-18 22:39:46 -0400 | [diff] [blame] | 369 | if (!tmp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | goto out; |
Evgeniy Dushistov | c9a27b5 | 2006-06-25 05:47:19 -0700 | [diff] [blame] | 371 | |
Al Viro | bbb3eb9 | 2015-06-19 00:10:00 -0400 | [diff] [blame] | 372 | if (new) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | *new = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | |
| 375 | mark_buffer_dirty(bh); |
| 376 | if (IS_SYNC(inode)) |
| 377 | sync_dirty_buffer(bh); |
| 378 | inode->i_ctime = CURRENT_TIME_SEC; |
| 379 | mark_inode_dirty(inode); |
| 380 | out: |
| 381 | brelse (bh); |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 382 | UFSD("EXIT\n"); |
Al Viro | 177848a | 2015-06-19 00:53:06 -0400 | [diff] [blame] | 383 | if (tmp) |
| 384 | tmp += uspi->s_sbbase; |
| 385 | return tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | } |
| 387 | |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 388 | /** |
Alessio Igor Bogani | 7422caa | 2011-04-08 19:33:07 +0200 | [diff] [blame] | 389 | * ufs_getfrag_block() - `get_block_t' function, interface between UFS and |
Evgeniy Dushistov | 022a6dc | 2006-06-25 05:47:27 -0700 | [diff] [blame] | 390 | * readpage, writepage and so on |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | */ |
| 392 | |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 393 | static 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] | 394 | { |
Al Viro | 0385f1f | 2015-06-19 14:20:21 -0400 | [diff] [blame] | 395 | struct super_block *sb = inode->i_sb; |
| 396 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
| 397 | int err = 0, new = 0; |
Al Viro | 4b7068c | 2015-06-04 14:27:23 -0400 | [diff] [blame] | 398 | unsigned offsets[4]; |
| 399 | int depth = ufs_block_to_path(inode, fragment >> uspi->s_fpbshift, offsets); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | u64 phys64 = 0; |
Al Viro | 177848a | 2015-06-19 00:53:06 -0400 | [diff] [blame] | 401 | unsigned frag = fragment & uspi->s_fpbmask; |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 402 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | if (!create) { |
Al Viro | 4b7068c | 2015-06-04 14:27:23 -0400 | [diff] [blame] | 404 | phys64 = ufs_frag_map(inode, offsets, depth); |
Al Viro | 0385f1f | 2015-06-19 14:20:21 -0400 | [diff] [blame] | 405 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | } |
| 407 | |
| 408 | /* This code entered only while writing ....? */ |
| 409 | |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 410 | mutex_lock(&UFS_I(inode)->truncate_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 412 | UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment); |
Al Viro | 0385f1f | 2015-06-19 14:20:21 -0400 | [diff] [blame] | 413 | if (unlikely(!depth)) { |
| 414 | ufs_warning(sb, "ufs_get_block", "block > big"); |
| 415 | err = -EIO; |
| 416 | goto out; |
| 417 | } |
Al Viro | 0f3c129 | 2015-06-19 13:40:25 -0400 | [diff] [blame] | 418 | |
| 419 | if (UFS_I(inode)->i_lastfrag < UFS_NDIR_FRAGMENT) { |
| 420 | unsigned lastfrag = UFS_I(inode)->i_lastfrag; |
| 421 | unsigned tailfrags = lastfrag & uspi->s_fpbmask; |
| 422 | if (tailfrags && fragment >= lastfrag) { |
| 423 | if (!ufs_extend_tail(inode, fragment, |
| 424 | &err, bh_result->b_page)) |
Al Viro | 0385f1f | 2015-06-19 14:20:21 -0400 | [diff] [blame] | 425 | goto out; |
Al Viro | 0f3c129 | 2015-06-19 13:40:25 -0400 | [diff] [blame] | 426 | } |
| 427 | } |
| 428 | |
Al Viro | 71dd428 | 2015-06-04 14:34:43 -0400 | [diff] [blame] | 429 | if (depth == 1) { |
Al Viro | 5336970 | 2015-06-19 13:53:52 -0400 | [diff] [blame] | 430 | phys64 = ufs_inode_getfrag(inode, offsets[0], fragment, |
Al Viro | 4e317ce | 2015-06-19 14:27:10 -0400 | [diff] [blame] | 431 | &err, &new, bh_result->b_page); |
Al Viro | 4eeff4c | 2015-06-19 14:08:16 -0400 | [diff] [blame] | 432 | } else { |
| 433 | int i; |
Al Viro | 5336970 | 2015-06-19 13:53:52 -0400 | [diff] [blame] | 434 | phys64 = ufs_inode_getfrag(inode, offsets[0], fragment, |
Al Viro | 4e317ce | 2015-06-19 14:27:10 -0400 | [diff] [blame] | 435 | &err, NULL, NULL); |
Al Viro | 4eeff4c | 2015-06-19 14:08:16 -0400 | [diff] [blame] | 436 | for (i = 1; i < depth - 1; i++) |
| 437 | phys64 = ufs_inode_getblock(inode, phys64, offsets[i], |
Al Viro | 4e317ce | 2015-06-19 14:27:10 -0400 | [diff] [blame] | 438 | fragment, &err, NULL, NULL); |
Al Viro | 4eeff4c | 2015-06-19 14:08:16 -0400 | [diff] [blame] | 439 | phys64 = ufs_inode_getblock(inode, phys64, offsets[depth - 1], |
Al Viro | 4e317ce | 2015-06-19 14:27:10 -0400 | [diff] [blame] | 440 | fragment, &err, &new, bh_result->b_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | } |
Al Viro | 0385f1f | 2015-06-19 14:20:21 -0400 | [diff] [blame] | 442 | out: |
Al Viro | 177848a | 2015-06-19 00:53:06 -0400 | [diff] [blame] | 443 | if (phys64) { |
| 444 | phys64 += frag; |
Al Viro | 0385f1f | 2015-06-19 14:20:21 -0400 | [diff] [blame] | 445 | map_bh(bh_result, sb, phys64); |
| 446 | if (new) |
| 447 | set_buffer_new(bh_result); |
Al Viro | 177848a | 2015-06-19 00:53:06 -0400 | [diff] [blame] | 448 | } |
Al Viro | 724bb09 | 2015-06-17 12:02:56 -0400 | [diff] [blame] | 449 | mutex_unlock(&UFS_I(inode)->truncate_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | } |
| 452 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | static int ufs_writepage(struct page *page, struct writeback_control *wbc) |
| 454 | { |
| 455 | return block_write_full_page(page,ufs_getfrag_block,wbc); |
| 456 | } |
Nick Piggin | 82b9d1d | 2007-10-16 01:25:19 -0700 | [diff] [blame] | 457 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | static int ufs_readpage(struct file *file, struct page *page) |
| 459 | { |
| 460 | return block_read_full_page(page,ufs_getfrag_block); |
| 461 | } |
Nick Piggin | 82b9d1d | 2007-10-16 01:25:19 -0700 | [diff] [blame] | 462 | |
Christoph Hellwig | f4e420d | 2010-06-04 11:29:56 +0200 | [diff] [blame] | 463 | int ufs_prepare_chunk(struct page *page, loff_t pos, unsigned len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | { |
Christoph Hellwig | 6e1db88 | 2010-06-04 11:29:57 +0200 | [diff] [blame] | 465 | return __block_write_begin(page, pos, len, ufs_getfrag_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | } |
Nick Piggin | 82b9d1d | 2007-10-16 01:25:19 -0700 | [diff] [blame] | 467 | |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 468 | static void ufs_truncate_blocks(struct inode *); |
| 469 | |
Marco Stornelli | 83f6e37 | 2012-12-15 11:45:14 +0100 | [diff] [blame] | 470 | static void ufs_write_failed(struct address_space *mapping, loff_t to) |
| 471 | { |
| 472 | struct inode *inode = mapping->host; |
| 473 | |
Al Viro | 3b7a3a0 | 2015-06-16 18:06:40 -0400 | [diff] [blame] | 474 | if (to > inode->i_size) { |
Kirill A. Shutemov | 7caef26 | 2013-09-12 15:13:56 -0700 | [diff] [blame] | 475 | truncate_pagecache(inode, inode->i_size); |
Al Viro | 3b7a3a0 | 2015-06-16 18:06:40 -0400 | [diff] [blame] | 476 | ufs_truncate_blocks(inode); |
| 477 | } |
Marco Stornelli | 83f6e37 | 2012-12-15 11:45:14 +0100 | [diff] [blame] | 478 | } |
| 479 | |
Nick Piggin | 82b9d1d | 2007-10-16 01:25:19 -0700 | [diff] [blame] | 480 | static int ufs_write_begin(struct file *file, struct address_space *mapping, |
| 481 | loff_t pos, unsigned len, unsigned flags, |
| 482 | struct page **pagep, void **fsdata) |
| 483 | { |
Christoph Hellwig | 155130a | 2010-06-04 11:29:58 +0200 | [diff] [blame] | 484 | int ret; |
| 485 | |
| 486 | ret = block_write_begin(mapping, pos, len, flags, pagep, |
Christoph Hellwig | f4e420d | 2010-06-04 11:29:56 +0200 | [diff] [blame] | 487 | ufs_getfrag_block); |
Marco Stornelli | 83f6e37 | 2012-12-15 11:45:14 +0100 | [diff] [blame] | 488 | if (unlikely(ret)) |
| 489 | ufs_write_failed(mapping, pos + len); |
Christoph Hellwig | 155130a | 2010-06-04 11:29:58 +0200 | [diff] [blame] | 490 | |
| 491 | return ret; |
Nick Piggin | 82b9d1d | 2007-10-16 01:25:19 -0700 | [diff] [blame] | 492 | } |
| 493 | |
Al Viro | 3b7a3a0 | 2015-06-16 18:06:40 -0400 | [diff] [blame] | 494 | static int ufs_write_end(struct file *file, struct address_space *mapping, |
| 495 | loff_t pos, unsigned len, unsigned copied, |
| 496 | struct page *page, void *fsdata) |
| 497 | { |
| 498 | int ret; |
| 499 | |
| 500 | ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); |
| 501 | if (ret < len) |
| 502 | ufs_write_failed(mapping, pos + len); |
| 503 | return ret; |
| 504 | } |
| 505 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | static sector_t ufs_bmap(struct address_space *mapping, sector_t block) |
| 507 | { |
| 508 | return generic_block_bmap(mapping,block,ufs_getfrag_block); |
| 509 | } |
Nick Piggin | 82b9d1d | 2007-10-16 01:25:19 -0700 | [diff] [blame] | 510 | |
Christoph Hellwig | f5e54d6 | 2006-06-28 04:26:44 -0700 | [diff] [blame] | 511 | const struct address_space_operations ufs_aops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | .readpage = ufs_readpage, |
| 513 | .writepage = ufs_writepage, |
Nick Piggin | 82b9d1d | 2007-10-16 01:25:19 -0700 | [diff] [blame] | 514 | .write_begin = ufs_write_begin, |
Al Viro | 3b7a3a0 | 2015-06-16 18:06:40 -0400 | [diff] [blame] | 515 | .write_end = ufs_write_end, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | .bmap = ufs_bmap |
| 517 | }; |
| 518 | |
Evgeniy Dushistov | 826843a | 2006-06-25 05:47:21 -0700 | [diff] [blame] | 519 | static void ufs_set_inode_ops(struct inode *inode) |
| 520 | { |
| 521 | if (S_ISREG(inode->i_mode)) { |
| 522 | inode->i_op = &ufs_file_inode_operations; |
| 523 | inode->i_fop = &ufs_file_operations; |
| 524 | inode->i_mapping->a_ops = &ufs_aops; |
| 525 | } else if (S_ISDIR(inode->i_mode)) { |
| 526 | inode->i_op = &ufs_dir_inode_operations; |
| 527 | inode->i_fop = &ufs_dir_operations; |
| 528 | inode->i_mapping->a_ops = &ufs_aops; |
| 529 | } else if (S_ISLNK(inode->i_mode)) { |
Al Viro | 4b8061a | 2015-05-02 10:28:56 -0400 | [diff] [blame] | 530 | if (!inode->i_blocks) { |
Al Viro | 4b8061a | 2015-05-02 10:28:56 -0400 | [diff] [blame] | 531 | inode->i_link = (char *)UFS_I(inode)->i_u1.i_symlink; |
Al Viro | 9cdce3c | 2015-11-15 18:24:17 -0500 | [diff] [blame] | 532 | inode->i_op = &simple_symlink_inode_operations; |
Al Viro | 4b8061a | 2015-05-02 10:28:56 -0400 | [diff] [blame] | 533 | } else { |
Evgeniy Dushistov | 826843a | 2006-06-25 05:47:21 -0700 | [diff] [blame] | 534 | inode->i_mapping->a_ops = &ufs_aops; |
Al Viro | 9cdce3c | 2015-11-15 18:24:17 -0500 | [diff] [blame] | 535 | inode->i_op = &page_symlink_inode_operations; |
Al Viro | 21fc61c | 2015-11-17 01:07:57 -0500 | [diff] [blame] | 536 | inode_nohighmem(inode); |
Evgeniy Dushistov | 826843a | 2006-06-25 05:47:21 -0700 | [diff] [blame] | 537 | } |
| 538 | } else |
| 539 | init_special_inode(inode, inode->i_mode, |
| 540 | ufs_get_inode_dev(inode->i_sb, UFS_I(inode))); |
| 541 | } |
| 542 | |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 543 | 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] | 544 | { |
| 545 | struct ufs_inode_info *ufsi = UFS_I(inode); |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 546 | struct super_block *sb = inode->i_sb; |
Al Viro | 6a9a06d | 2011-07-26 02:49:13 -0400 | [diff] [blame] | 547 | umode_t mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | |
| 549 | /* |
| 550 | * Copy data to the in-core inode. |
| 551 | */ |
| 552 | inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); |
Miklos Szeredi | bfe8684 | 2011-10-28 14:13:29 +0200 | [diff] [blame] | 553 | set_nlink(inode, fs16_to_cpu(sb, ufs_inode->ui_nlink)); |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 554 | if (inode->i_nlink == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | 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] | 556 | return -1; |
| 557 | } |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 558 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | /* |
| 560 | * Linux now has 32-bit uid and gid, so we can support EFT. |
| 561 | */ |
Eric W. Biederman | 72235465 | 2012-02-10 12:21:22 -0800 | [diff] [blame] | 562 | i_uid_write(inode, ufs_get_inode_uid(sb, ufs_inode)); |
| 563 | i_gid_write(inode, ufs_get_inode_gid(sb, ufs_inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | |
| 565 | inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); |
| 566 | inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); |
| 567 | inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); |
| 568 | inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); |
| 569 | inode->i_mtime.tv_nsec = 0; |
| 570 | inode->i_atime.tv_nsec = 0; |
| 571 | inode->i_ctime.tv_nsec = 0; |
| 572 | inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 573 | inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); |
| 576 | 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] | 577 | |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 578 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 580 | memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr, |
| 581 | sizeof(ufs_inode->ui_u2.ui_addr)); |
Evgeniy Dushistov | dd187a2 | 2006-06-25 05:47:25 -0700 | [diff] [blame] | 582 | } else { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 583 | memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink, |
Duane Griffin | b12903f | 2009-01-08 22:43:50 +0000 | [diff] [blame] | 584 | sizeof(ufs_inode->ui_u2.ui_symlink) - 1); |
| 585 | 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] | 586 | } |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 587 | return 0; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 588 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 590 | 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] | 591 | { |
| 592 | struct ufs_inode_info *ufsi = UFS_I(inode); |
| 593 | struct super_block *sb = inode->i_sb; |
Al Viro | 6a9a06d | 2011-07-26 02:49:13 -0400 | [diff] [blame] | 594 | umode_t mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 596 | UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | /* |
| 598 | * Copy data to the in-core inode. |
| 599 | */ |
| 600 | inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); |
Miklos Szeredi | bfe8684 | 2011-10-28 14:13:29 +0200 | [diff] [blame] | 601 | set_nlink(inode, fs16_to_cpu(sb, ufs2_inode->ui_nlink)); |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 602 | if (inode->i_nlink == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | 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] | 604 | return -1; |
| 605 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | |
| 607 | /* |
| 608 | * Linux now has 32-bit uid and gid, so we can support EFT. |
| 609 | */ |
Eric W. Biederman | 72235465 | 2012-02-10 12:21:22 -0800 | [diff] [blame] | 610 | i_uid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_uid)); |
| 611 | i_gid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_gid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | |
| 613 | inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); |
Evgeniy Dushistov | 2189850 | 2007-03-16 13:38:07 -0800 | [diff] [blame] | 614 | inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime); |
| 615 | inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime); |
| 616 | inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime); |
| 617 | inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec); |
| 618 | inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec); |
| 619 | 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] | 620 | inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 621 | inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | /* |
| 624 | ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); |
| 625 | ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); |
| 626 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | |
| 628 | if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 629 | memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr, |
| 630 | sizeof(ufs2_inode->ui_u2.ui_addr)); |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 631 | } else { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 632 | memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink, |
Duane Griffin | b12903f | 2009-01-08 22:43:50 +0000 | [diff] [blame] | 633 | sizeof(ufs2_inode->ui_u2.ui_symlink) - 1); |
| 634 | 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] | 635 | } |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 636 | return 0; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 637 | } |
| 638 | |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 639 | struct inode *ufs_iget(struct super_block *sb, unsigned long ino) |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 640 | { |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 641 | struct ufs_inode_info *ufsi; |
| 642 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 643 | struct buffer_head * bh; |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 644 | struct inode *inode; |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 645 | int err; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 646 | |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 647 | UFSD("ENTER, ino %lu\n", ino); |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 648 | |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 649 | if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) { |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 650 | ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n", |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 651 | ino); |
| 652 | return ERR_PTR(-EIO); |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 653 | } |
| 654 | |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 655 | inode = iget_locked(sb, ino); |
| 656 | if (!inode) |
| 657 | return ERR_PTR(-ENOMEM); |
| 658 | if (!(inode->i_state & I_NEW)) |
| 659 | return inode; |
| 660 | |
| 661 | ufsi = UFS_I(inode); |
| 662 | |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 663 | bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); |
| 664 | if (!bh) { |
| 665 | ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n", |
| 666 | inode->i_ino); |
| 667 | goto bad_inode; |
| 668 | } |
| 669 | if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { |
| 670 | struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; |
| 671 | |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 672 | err = ufs2_read_inode(inode, |
| 673 | ufs2_inode + ufs_inotofsbo(inode->i_ino)); |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 674 | } else { |
| 675 | struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data; |
| 676 | |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 677 | err = ufs1_read_inode(inode, |
| 678 | ufs_inode + ufs_inotofsbo(inode->i_ino)); |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 679 | } |
| 680 | |
Evgeniy Dushistov | 07a0cfe | 2007-04-16 22:53:24 -0700 | [diff] [blame] | 681 | if (err) |
| 682 | goto bad_inode; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 683 | inode->i_version++; |
| 684 | ufsi->i_lastfrag = |
| 685 | (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; |
| 686 | ufsi->i_dir_start_lookup = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | ufsi->i_osync = 0; |
| 688 | |
Evgeniy Dushistov | 826843a | 2006-06-25 05:47:21 -0700 | [diff] [blame] | 689 | ufs_set_inode_ops(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | |
| 691 | brelse(bh); |
| 692 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 693 | UFSD("EXIT\n"); |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 694 | unlock_new_inode(inode); |
| 695 | return inode; |
Evgeniy Dushistov | 05f225d | 2006-06-27 02:53:59 -0700 | [diff] [blame] | 696 | |
| 697 | bad_inode: |
David Howells | b55c460 | 2008-02-07 00:15:48 -0800 | [diff] [blame] | 698 | iget_failed(inode); |
| 699 | return ERR_PTR(-EIO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | } |
| 701 | |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 702 | 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] | 703 | { |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 704 | struct super_block *sb = inode->i_sb; |
| 705 | struct ufs_inode_info *ufsi = UFS_I(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | |
| 707 | ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); |
| 708 | ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); |
| 709 | |
Eric W. Biederman | 72235465 | 2012-02-10 12:21:22 -0800 | [diff] [blame] | 710 | ufs_set_inode_uid(sb, ufs_inode, i_uid_read(inode)); |
| 711 | ufs_set_inode_gid(sb, ufs_inode, i_gid_read(inode)); |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 712 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); |
| 714 | ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); |
| 715 | ufs_inode->ui_atime.tv_usec = 0; |
| 716 | ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); |
| 717 | ufs_inode->ui_ctime.tv_usec = 0; |
| 718 | ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); |
| 719 | ufs_inode->ui_mtime.tv_usec = 0; |
| 720 | ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); |
| 721 | ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 722 | ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 724 | if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow); |
| 726 | ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag); |
| 727 | } |
| 728 | |
| 729 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { |
| 730 | /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ |
| 731 | ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0]; |
| 732 | } else if (inode->i_blocks) { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 733 | memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data, |
| 734 | sizeof(ufs_inode->ui_u2.ui_addr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | } |
| 736 | else { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 737 | memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, |
| 738 | sizeof(ufs_inode->ui_u2.ui_symlink)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | } |
| 740 | |
| 741 | if (!inode->i_nlink) |
| 742 | memset (ufs_inode, 0, sizeof(struct ufs_inode)); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 743 | } |
| 744 | |
| 745 | static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode) |
| 746 | { |
| 747 | struct super_block *sb = inode->i_sb; |
| 748 | struct ufs_inode_info *ufsi = UFS_I(inode); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 749 | |
| 750 | UFSD("ENTER\n"); |
| 751 | ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); |
| 752 | ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); |
| 753 | |
Eric W. Biederman | 72235465 | 2012-02-10 12:21:22 -0800 | [diff] [blame] | 754 | ufs_inode->ui_uid = cpu_to_fs32(sb, i_uid_read(inode)); |
| 755 | ufs_inode->ui_gid = cpu_to_fs32(sb, i_gid_read(inode)); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 756 | |
| 757 | ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); |
Evgeniy Dushistov | 2189850 | 2007-03-16 13:38:07 -0800 | [diff] [blame] | 758 | ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec); |
| 759 | ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec); |
| 760 | ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec); |
| 761 | ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec); |
| 762 | ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec); |
| 763 | 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] | 764 | |
| 765 | ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks); |
| 766 | ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); |
| 767 | ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); |
| 768 | |
| 769 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { |
| 770 | /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ |
| 771 | ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0]; |
| 772 | } else if (inode->i_blocks) { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 773 | memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data, |
| 774 | sizeof(ufs_inode->ui_u2.ui_addr)); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 775 | } else { |
Duane Griffin | f33219b | 2009-01-08 22:43:49 +0000 | [diff] [blame] | 776 | memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, |
| 777 | sizeof(ufs_inode->ui_u2.ui_symlink)); |
Evgeniy Dushistov | 3313e29 | 2007-02-12 00:54:31 -0800 | [diff] [blame] | 778 | } |
| 779 | |
| 780 | if (!inode->i_nlink) |
| 781 | memset (ufs_inode, 0, sizeof(struct ufs2_inode)); |
| 782 | UFSD("EXIT\n"); |
| 783 | } |
| 784 | |
| 785 | static int ufs_update_inode(struct inode * inode, int do_sync) |
| 786 | { |
| 787 | struct super_block *sb = inode->i_sb; |
| 788 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
| 789 | struct buffer_head * bh; |
| 790 | |
| 791 | UFSD("ENTER, ino %lu\n", inode->i_ino); |
| 792 | |
| 793 | if (inode->i_ino < UFS_ROOTINO || |
| 794 | inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { |
| 795 | ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); |
| 796 | return -1; |
| 797 | } |
| 798 | |
| 799 | bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); |
| 800 | if (!bh) { |
| 801 | ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); |
| 802 | return -1; |
| 803 | } |
| 804 | if (uspi->fs_magic == UFS2_MAGIC) { |
| 805 | struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; |
| 806 | |
| 807 | ufs2_update_inode(inode, |
| 808 | ufs2_inode + ufs_inotofsbo(inode->i_ino)); |
| 809 | } else { |
| 810 | struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data; |
| 811 | |
| 812 | ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); |
| 813 | } |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 814 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | mark_buffer_dirty(bh); |
| 816 | if (do_sync) |
| 817 | sync_dirty_buffer(bh); |
| 818 | brelse (bh); |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 819 | |
Evgeniy Dushistov | abf5d15 | 2006-06-25 05:47:24 -0700 | [diff] [blame] | 820 | UFSD("EXIT\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 821 | return 0; |
| 822 | } |
| 823 | |
Christoph Hellwig | a9185b4 | 2010-03-05 09:21:37 +0100 | [diff] [blame] | 824 | int ufs_write_inode(struct inode *inode, struct writeback_control *wbc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | { |
Al Viro | f3e0f3d | 2015-06-16 02:35:14 -0400 | [diff] [blame] | 826 | return ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | } |
| 828 | |
| 829 | int ufs_sync_inode (struct inode *inode) |
| 830 | { |
| 831 | return ufs_update_inode (inode, 1); |
| 832 | } |
| 833 | |
Al Viro | 58e8268 | 2010-06-05 19:40:56 -0400 | [diff] [blame] | 834 | void ufs_evict_inode(struct inode * inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | { |
Al Viro | 58e8268 | 2010-06-05 19:40:56 -0400 | [diff] [blame] | 836 | int want_delete = 0; |
| 837 | |
| 838 | if (!inode->i_nlink && !is_bad_inode(inode)) |
| 839 | want_delete = 1; |
Evgeniy Dushistov | 10e5dce | 2006-07-01 04:36:24 -0700 | [diff] [blame] | 840 | |
Johannes Weiner | 91b0abe | 2014-04-03 14:47:49 -0700 | [diff] [blame] | 841 | truncate_inode_pages_final(&inode->i_data); |
Al Viro | 58e8268 | 2010-06-05 19:40:56 -0400 | [diff] [blame] | 842 | if (want_delete) { |
Al Viro | 58e8268 | 2010-06-05 19:40:56 -0400 | [diff] [blame] | 843 | inode->i_size = 0; |
Al Viro | d622f167 | 2015-06-16 18:04:16 -0400 | [diff] [blame] | 844 | if (inode->i_blocks) |
| 845 | ufs_truncate_blocks(inode); |
Al Viro | 58e8268 | 2010-06-05 19:40:56 -0400 | [diff] [blame] | 846 | } |
| 847 | |
| 848 | invalidate_inode_buffers(inode); |
Jan Kara | dbd5768 | 2012-05-03 14:48:02 +0200 | [diff] [blame] | 849 | clear_inode(inode); |
Al Viro | 58e8268 | 2010-06-05 19:40:56 -0400 | [diff] [blame] | 850 | |
Al Viro | f3e0f3d | 2015-06-16 02:35:14 -0400 | [diff] [blame] | 851 | if (want_delete) |
Alexey Khoroshilov | 9ef7db7 | 2014-09-02 11:40:17 +0400 | [diff] [blame] | 852 | ufs_free_inode(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | } |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 854 | |
Al Viro | a138b4b | 2015-06-18 02:18:54 -0400 | [diff] [blame] | 855 | struct to_free { |
| 856 | struct inode *inode; |
| 857 | u64 to; |
| 858 | unsigned count; |
| 859 | }; |
| 860 | |
| 861 | static inline void free_data(struct to_free *ctx, u64 from, unsigned count) |
| 862 | { |
| 863 | if (ctx->count && ctx->to != from) { |
| 864 | ufs_free_blocks(ctx->inode, ctx->to - ctx->count, ctx->count); |
| 865 | ctx->count = 0; |
| 866 | } |
| 867 | ctx->count += count; |
| 868 | ctx->to = from + count; |
| 869 | } |
| 870 | |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 871 | #define DIRECT_BLOCK ((inode->i_size + uspi->s_bsize - 1) >> uspi->s_bshift) |
| 872 | #define DIRECT_FRAGMENT ((inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift) |
| 873 | |
| 874 | static void ufs_trunc_direct(struct inode *inode) |
| 875 | { |
| 876 | struct ufs_inode_info *ufsi = UFS_I(inode); |
| 877 | struct super_block * sb; |
| 878 | struct ufs_sb_private_info * uspi; |
| 879 | void *p; |
| 880 | u64 frag1, frag2, frag3, frag4, block1, block2; |
Al Viro | a138b4b | 2015-06-18 02:18:54 -0400 | [diff] [blame] | 881 | struct to_free ctx = {.inode = inode}; |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 882 | unsigned i, tmp; |
| 883 | |
| 884 | UFSD("ENTER: ino %lu\n", inode->i_ino); |
| 885 | |
| 886 | sb = inode->i_sb; |
| 887 | uspi = UFS_SB(sb)->s_uspi; |
| 888 | |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 889 | frag1 = DIRECT_FRAGMENT; |
| 890 | frag4 = min_t(u64, UFS_NDIR_FRAGMENT, ufsi->i_lastfrag); |
| 891 | frag2 = ((frag1 & uspi->s_fpbmask) ? ((frag1 | uspi->s_fpbmask) + 1) : frag1); |
| 892 | frag3 = frag4 & ~uspi->s_fpbmask; |
| 893 | block1 = block2 = 0; |
| 894 | if (frag2 > frag3) { |
| 895 | frag2 = frag4; |
| 896 | frag3 = frag4 = 0; |
| 897 | } else if (frag2 < frag3) { |
| 898 | block1 = ufs_fragstoblks (frag2); |
| 899 | block2 = ufs_fragstoblks (frag3); |
| 900 | } |
| 901 | |
| 902 | UFSD("ino %lu, frag1 %llu, frag2 %llu, block1 %llu, block2 %llu," |
| 903 | " frag3 %llu, frag4 %llu\n", inode->i_ino, |
| 904 | (unsigned long long)frag1, (unsigned long long)frag2, |
| 905 | (unsigned long long)block1, (unsigned long long)block2, |
| 906 | (unsigned long long)frag3, (unsigned long long)frag4); |
| 907 | |
| 908 | if (frag1 >= frag2) |
| 909 | goto next1; |
| 910 | |
| 911 | /* |
| 912 | * Free first free fragments |
| 913 | */ |
| 914 | p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag1)); |
| 915 | tmp = ufs_data_ptr_to_cpu(sb, p); |
| 916 | if (!tmp ) |
| 917 | ufs_panic (sb, "ufs_trunc_direct", "internal error"); |
| 918 | frag2 -= frag1; |
| 919 | frag1 = ufs_fragnum (frag1); |
| 920 | |
| 921 | ufs_free_fragments(inode, tmp + frag1, frag2); |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 922 | |
| 923 | next1: |
| 924 | /* |
| 925 | * Free whole blocks |
| 926 | */ |
| 927 | for (i = block1 ; i < block2; i++) { |
| 928 | p = ufs_get_direct_data_ptr(uspi, ufsi, i); |
| 929 | tmp = ufs_data_ptr_to_cpu(sb, p); |
| 930 | if (!tmp) |
| 931 | continue; |
| 932 | write_seqlock(&ufsi->meta_lock); |
| 933 | ufs_data_ptr_clear(uspi, p); |
| 934 | write_sequnlock(&ufsi->meta_lock); |
| 935 | |
Al Viro | a138b4b | 2015-06-18 02:18:54 -0400 | [diff] [blame] | 936 | free_data(&ctx, tmp, uspi->s_fpb); |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 937 | } |
| 938 | |
Al Viro | a138b4b | 2015-06-18 02:18:54 -0400 | [diff] [blame] | 939 | free_data(&ctx, 0, 0); |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 940 | |
| 941 | if (frag3 >= frag4) |
| 942 | goto next3; |
| 943 | |
| 944 | /* |
| 945 | * Free last free fragments |
| 946 | */ |
| 947 | p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag3)); |
| 948 | tmp = ufs_data_ptr_to_cpu(sb, p); |
| 949 | if (!tmp ) |
| 950 | ufs_panic(sb, "ufs_truncate_direct", "internal error"); |
| 951 | frag4 = ufs_fragnum (frag4); |
| 952 | write_seqlock(&ufsi->meta_lock); |
| 953 | ufs_data_ptr_clear(uspi, p); |
| 954 | write_sequnlock(&ufsi->meta_lock); |
| 955 | |
| 956 | ufs_free_fragments (inode, tmp, frag4); |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 957 | next3: |
| 958 | |
| 959 | UFSD("EXIT: ino %lu\n", inode->i_ino); |
| 960 | } |
| 961 | |
Al Viro | 163073d | 2015-06-18 20:07:08 -0400 | [diff] [blame] | 962 | static void free_full_branch(struct inode *inode, u64 ind_block, int depth) |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 963 | { |
| 964 | struct super_block *sb = inode->i_sb; |
| 965 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
Al Viro | 163073d | 2015-06-18 20:07:08 -0400 | [diff] [blame] | 966 | struct ufs_buffer_head *ubh = ubh_bread(sb, ind_block, uspi->s_bsize); |
Al Viro | 18ca51d | 2015-06-18 13:45:07 -0400 | [diff] [blame] | 967 | unsigned i; |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 968 | |
Al Viro | 163073d | 2015-06-18 20:07:08 -0400 | [diff] [blame] | 969 | if (!ubh) |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 970 | return; |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 971 | |
Al Viro | 9e0fbbd | 2015-06-18 15:33:47 -0400 | [diff] [blame] | 972 | if (--depth) { |
Al Viro | 163073d | 2015-06-18 20:07:08 -0400 | [diff] [blame] | 973 | for (i = 0; i < uspi->s_apb; i++) { |
| 974 | void *p = ubh_get_data_ptr(uspi, ubh, i); |
| 975 | u64 block = ufs_data_ptr_to_cpu(sb, p); |
Al Viro | cc7231e | 2015-06-18 20:14:02 -0400 | [diff] [blame] | 976 | if (block) |
Al Viro | 163073d | 2015-06-18 20:07:08 -0400 | [diff] [blame] | 977 | free_full_branch(inode, block, depth); |
Al Viro | 6d1ebbc | 2015-06-18 17:11:49 -0400 | [diff] [blame] | 978 | } |
| 979 | } else { |
| 980 | struct to_free ctx = {.inode = inode}; |
| 981 | |
| 982 | for (i = 0; i < uspi->s_apb; i++) { |
Al Viro | 163073d | 2015-06-18 20:07:08 -0400 | [diff] [blame] | 983 | void *p = ubh_get_data_ptr(uspi, ubh, i); |
| 984 | u64 block = ufs_data_ptr_to_cpu(sb, p); |
Al Viro | cc7231e | 2015-06-18 20:14:02 -0400 | [diff] [blame] | 985 | if (block) |
Al Viro | 163073d | 2015-06-18 20:07:08 -0400 | [diff] [blame] | 986 | free_data(&ctx, block, uspi->s_fpb); |
Al Viro | 6d1ebbc | 2015-06-18 17:11:49 -0400 | [diff] [blame] | 987 | } |
| 988 | free_data(&ctx, 0, 0); |
| 989 | } |
Al Viro | 6d1ebbc | 2015-06-18 17:11:49 -0400 | [diff] [blame] | 990 | |
| 991 | ubh_bforget(ubh); |
Al Viro | 163073d | 2015-06-18 20:07:08 -0400 | [diff] [blame] | 992 | ufs_free_blocks(inode, ind_block, uspi->s_fpb); |
Al Viro | 6d1ebbc | 2015-06-18 17:11:49 -0400 | [diff] [blame] | 993 | } |
| 994 | |
Al Viro | 7b4e4f7 | 2015-06-18 19:13:02 -0400 | [diff] [blame] | 995 | static void free_branch_tail(struct inode *inode, unsigned from, struct ufs_buffer_head *ubh, int depth) |
Al Viro | 6d1ebbc | 2015-06-18 17:11:49 -0400 | [diff] [blame] | 996 | { |
| 997 | struct super_block *sb = inode->i_sb; |
| 998 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
Al Viro | 6d1ebbc | 2015-06-18 17:11:49 -0400 | [diff] [blame] | 999 | unsigned i; |
| 1000 | |
Al Viro | 6d1ebbc | 2015-06-18 17:11:49 -0400 | [diff] [blame] | 1001 | if (--depth) { |
Al Viro | 7b4e4f7 | 2015-06-18 19:13:02 -0400 | [diff] [blame] | 1002 | for (i = from; i < uspi->s_apb ; i++) { |
Al Viro | 163073d | 2015-06-18 20:07:08 -0400 | [diff] [blame] | 1003 | void *p = ubh_get_data_ptr(uspi, ubh, i); |
| 1004 | u64 block = ufs_data_ptr_to_cpu(sb, p); |
| 1005 | if (block) { |
| 1006 | write_seqlock(&UFS_I(inode)->meta_lock); |
| 1007 | ufs_data_ptr_clear(uspi, p); |
| 1008 | write_sequnlock(&UFS_I(inode)->meta_lock); |
| 1009 | ubh_mark_buffer_dirty(ubh); |
| 1010 | free_full_branch(inode, block, depth); |
| 1011 | } |
Al Viro | a965742 | 2015-06-18 16:13:56 -0400 | [diff] [blame] | 1012 | } |
Al Viro | 9e0fbbd | 2015-06-18 15:33:47 -0400 | [diff] [blame] | 1013 | } else { |
Al Viro | a138b4b | 2015-06-18 02:18:54 -0400 | [diff] [blame] | 1014 | struct to_free ctx = {.inode = inode}; |
Al Viro | 9e0fbbd | 2015-06-18 15:33:47 -0400 | [diff] [blame] | 1015 | |
| 1016 | for (i = from; i < uspi->s_apb; i++) { |
Al Viro | 163073d | 2015-06-18 20:07:08 -0400 | [diff] [blame] | 1017 | void *p = ubh_get_data_ptr(uspi, ubh, i); |
| 1018 | u64 block = ufs_data_ptr_to_cpu(sb, p); |
| 1019 | if (block) { |
| 1020 | write_seqlock(&UFS_I(inode)->meta_lock); |
| 1021 | ufs_data_ptr_clear(uspi, p); |
| 1022 | write_sequnlock(&UFS_I(inode)->meta_lock); |
| 1023 | ubh_mark_buffer_dirty(ubh); |
| 1024 | free_data(&ctx, block, uspi->s_fpb); |
Al Viro | 163073d | 2015-06-18 20:07:08 -0400 | [diff] [blame] | 1025 | } |
Al Viro | 9e0fbbd | 2015-06-18 15:33:47 -0400 | [diff] [blame] | 1026 | } |
Al Viro | a138b4b | 2015-06-18 02:18:54 -0400 | [diff] [blame] | 1027 | free_data(&ctx, 0, 0); |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 1028 | } |
Al Viro | 9e0fbbd | 2015-06-18 15:33:47 -0400 | [diff] [blame] | 1029 | if (IS_SYNC(inode) && ubh_buffer_dirty(ubh)) |
| 1030 | ubh_sync_block(ubh); |
| 1031 | ubh_brelse(ubh); |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 1032 | } |
| 1033 | |
| 1034 | static int ufs_alloc_lastblock(struct inode *inode, loff_t size) |
| 1035 | { |
| 1036 | int err = 0; |
| 1037 | struct super_block *sb = inode->i_sb; |
| 1038 | struct address_space *mapping = inode->i_mapping; |
| 1039 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
| 1040 | unsigned i, end; |
| 1041 | sector_t lastfrag; |
| 1042 | struct page *lastpage; |
| 1043 | struct buffer_head *bh; |
| 1044 | u64 phys64; |
| 1045 | |
| 1046 | lastfrag = (size + uspi->s_fsize - 1) >> uspi->s_fshift; |
| 1047 | |
| 1048 | if (!lastfrag) |
| 1049 | goto out; |
| 1050 | |
| 1051 | lastfrag--; |
| 1052 | |
| 1053 | lastpage = ufs_get_locked_page(mapping, lastfrag >> |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1054 | (PAGE_SHIFT - inode->i_blkbits)); |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 1055 | if (IS_ERR(lastpage)) { |
| 1056 | err = -EIO; |
| 1057 | goto out; |
| 1058 | } |
| 1059 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1060 | end = lastfrag & ((1 << (PAGE_SHIFT - inode->i_blkbits)) - 1); |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 1061 | bh = page_buffers(lastpage); |
| 1062 | for (i = 0; i < end; ++i) |
| 1063 | bh = bh->b_this_page; |
| 1064 | |
| 1065 | |
| 1066 | err = ufs_getfrag_block(inode, lastfrag, bh, 1); |
| 1067 | |
| 1068 | if (unlikely(err)) |
| 1069 | goto out_unlock; |
| 1070 | |
| 1071 | if (buffer_new(bh)) { |
| 1072 | clear_buffer_new(bh); |
| 1073 | unmap_underlying_metadata(bh->b_bdev, |
| 1074 | bh->b_blocknr); |
| 1075 | /* |
| 1076 | * we do not zeroize fragment, because of |
| 1077 | * if it maped to hole, it already contains zeroes |
| 1078 | */ |
| 1079 | set_buffer_uptodate(bh); |
| 1080 | mark_buffer_dirty(bh); |
| 1081 | set_page_dirty(lastpage); |
| 1082 | } |
| 1083 | |
| 1084 | if (lastfrag >= UFS_IND_FRAGMENT) { |
| 1085 | end = uspi->s_fpb - ufs_fragnum(lastfrag) - 1; |
| 1086 | phys64 = bh->b_blocknr + 1; |
| 1087 | for (i = 0; i < end; ++i) { |
| 1088 | bh = sb_getblk(sb, i + phys64); |
| 1089 | lock_buffer(bh); |
| 1090 | memset(bh->b_data, 0, sb->s_blocksize); |
| 1091 | set_buffer_uptodate(bh); |
| 1092 | mark_buffer_dirty(bh); |
| 1093 | unlock_buffer(bh); |
| 1094 | sync_dirty_buffer(bh); |
| 1095 | brelse(bh); |
| 1096 | } |
| 1097 | } |
| 1098 | out_unlock: |
| 1099 | ufs_put_locked_page(lastpage); |
| 1100 | out: |
| 1101 | return err; |
| 1102 | } |
| 1103 | |
| 1104 | static void __ufs_truncate_blocks(struct inode *inode) |
| 1105 | { |
| 1106 | struct ufs_inode_info *ufsi = UFS_I(inode); |
| 1107 | struct super_block *sb = inode->i_sb; |
| 1108 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
Al Viro | 7bad593 | 2015-06-18 14:21:09 -0400 | [diff] [blame] | 1109 | unsigned offsets[4]; |
Al Viro | 31cd043 | 2015-06-17 01:10:03 -0400 | [diff] [blame] | 1110 | int depth = ufs_block_to_path(inode, DIRECT_BLOCK, offsets); |
Al Viro | 6775e24 | 2015-06-18 14:55:50 -0400 | [diff] [blame] | 1111 | int depth2; |
Al Viro | 4243273 | 2015-06-18 15:47:17 -0400 | [diff] [blame] | 1112 | unsigned i; |
Al Viro | 7b4e4f7 | 2015-06-18 19:13:02 -0400 | [diff] [blame] | 1113 | struct ufs_buffer_head *ubh[3]; |
| 1114 | void *p; |
| 1115 | u64 block; |
Al Viro | 6775e24 | 2015-06-18 14:55:50 -0400 | [diff] [blame] | 1116 | |
| 1117 | if (!depth) |
| 1118 | return; |
| 1119 | |
| 1120 | /* find the last non-zero in offsets[] */ |
| 1121 | for (depth2 = depth - 1; depth2; depth2--) |
| 1122 | if (offsets[depth2]) |
| 1123 | break; |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 1124 | |
| 1125 | mutex_lock(&ufsi->truncate_mutex); |
Al Viro | 4243273 | 2015-06-18 15:47:17 -0400 | [diff] [blame] | 1126 | if (depth == 1) { |
Al Viro | 31cd043 | 2015-06-17 01:10:03 -0400 | [diff] [blame] | 1127 | ufs_trunc_direct(inode); |
Al Viro | 4243273 | 2015-06-18 15:47:17 -0400 | [diff] [blame] | 1128 | offsets[0] = UFS_IND_BLOCK; |
| 1129 | } else { |
Al Viro | 7b4e4f7 | 2015-06-18 19:13:02 -0400 | [diff] [blame] | 1130 | /* get the blocks that should be partially emptied */ |
| 1131 | p = ufs_get_direct_data_ptr(uspi, ufsi, offsets[0]); |
| 1132 | for (i = 0; i < depth2; i++) { |
| 1133 | offsets[i]++; /* next branch is fully freed */ |
| 1134 | block = ufs_data_ptr_to_cpu(sb, p); |
| 1135 | if (!block) |
| 1136 | break; |
| 1137 | ubh[i] = ubh_bread(sb, block, uspi->s_bsize); |
| 1138 | if (!ubh[i]) { |
| 1139 | write_seqlock(&ufsi->meta_lock); |
| 1140 | ufs_data_ptr_clear(uspi, p); |
| 1141 | write_sequnlock(&ufsi->meta_lock); |
| 1142 | break; |
| 1143 | } |
| 1144 | p = ubh_get_data_ptr(uspi, ubh[i], offsets[i + 1]); |
| 1145 | } |
Al Viro | f53bd14 | 2015-06-18 20:17:32 -0400 | [diff] [blame] | 1146 | while (i--) |
Al Viro | 7b4e4f7 | 2015-06-18 19:13:02 -0400 | [diff] [blame] | 1147 | free_branch_tail(inode, offsets[i + 1], ubh[i], depth - i - 1); |
Al Viro | 31cd043 | 2015-06-17 01:10:03 -0400 | [diff] [blame] | 1148 | } |
Al Viro | 4243273 | 2015-06-18 15:47:17 -0400 | [diff] [blame] | 1149 | for (i = offsets[0]; i <= UFS_TIND_BLOCK; i++) { |
Al Viro | 163073d | 2015-06-18 20:07:08 -0400 | [diff] [blame] | 1150 | p = ufs_get_direct_data_ptr(uspi, ufsi, i); |
| 1151 | block = ufs_data_ptr_to_cpu(sb, p); |
| 1152 | if (block) { |
| 1153 | write_seqlock(&ufsi->meta_lock); |
| 1154 | ufs_data_ptr_clear(uspi, p); |
| 1155 | write_sequnlock(&ufsi->meta_lock); |
| 1156 | free_full_branch(inode, block, i - UFS_IND_BLOCK + 1); |
| 1157 | } |
Al Viro | 4243273 | 2015-06-18 15:47:17 -0400 | [diff] [blame] | 1158 | } |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 1159 | ufsi->i_lastfrag = DIRECT_FRAGMENT; |
Al Viro | b6eede0 | 2015-06-18 20:09:39 -0400 | [diff] [blame] | 1160 | mark_inode_dirty(inode); |
Al Viro | 010d331 | 2015-06-17 12:44:14 -0400 | [diff] [blame] | 1161 | mutex_unlock(&ufsi->truncate_mutex); |
| 1162 | } |
| 1163 | |
| 1164 | static int ufs_truncate(struct inode *inode, loff_t size) |
| 1165 | { |
| 1166 | int err = 0; |
| 1167 | |
| 1168 | UFSD("ENTER: ino %lu, i_size: %llu, old_i_size: %llu\n", |
| 1169 | inode->i_ino, (unsigned long long)size, |
| 1170 | (unsigned long long)i_size_read(inode)); |
| 1171 | |
| 1172 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
| 1173 | S_ISLNK(inode->i_mode))) |
| 1174 | return -EINVAL; |
| 1175 | if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) |
| 1176 | return -EPERM; |
| 1177 | |
| 1178 | err = ufs_alloc_lastblock(inode, size); |
| 1179 | |
| 1180 | if (err) |
| 1181 | goto out; |
| 1182 | |
| 1183 | block_truncate_page(inode->i_mapping, size, ufs_getfrag_block); |
| 1184 | |
| 1185 | truncate_setsize(inode, size); |
| 1186 | |
| 1187 | __ufs_truncate_blocks(inode); |
| 1188 | inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC; |
| 1189 | mark_inode_dirty(inode); |
| 1190 | out: |
| 1191 | UFSD("EXIT: err %d\n", err); |
| 1192 | return err; |
| 1193 | } |
| 1194 | |
| 1195 | void ufs_truncate_blocks(struct inode *inode) |
| 1196 | { |
| 1197 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
| 1198 | S_ISLNK(inode->i_mode))) |
| 1199 | return; |
| 1200 | if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) |
| 1201 | return; |
| 1202 | __ufs_truncate_blocks(inode); |
| 1203 | } |
| 1204 | |
| 1205 | int ufs_setattr(struct dentry *dentry, struct iattr *attr) |
| 1206 | { |
| 1207 | struct inode *inode = d_inode(dentry); |
| 1208 | unsigned int ia_valid = attr->ia_valid; |
| 1209 | int error; |
| 1210 | |
| 1211 | error = inode_change_ok(inode, attr); |
| 1212 | if (error) |
| 1213 | return error; |
| 1214 | |
| 1215 | if (ia_valid & ATTR_SIZE && attr->ia_size != inode->i_size) { |
| 1216 | error = ufs_truncate(inode, attr->ia_size); |
| 1217 | if (error) |
| 1218 | return error; |
| 1219 | } |
| 1220 | |
| 1221 | setattr_copy(inode, attr); |
| 1222 | mark_inode_dirty(inode); |
| 1223 | return 0; |
| 1224 | } |
| 1225 | |
| 1226 | const struct inode_operations ufs_file_inode_operations = { |
| 1227 | .setattr = ufs_setattr, |
| 1228 | }; |