blob: 7e41aee7b69a660914e7cb26765714746929a306 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Linus Torvalds7c0f6ba2016-12-24 11:46:01 -080028#include <linux/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070029
30#include <linux/errno.h>
31#include <linux/fs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070032#include <linux/time.h>
33#include <linux/stat.h>
34#include <linux/string.h>
35#include <linux/mm.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070036#include <linux/buffer_head.h>
Christoph Hellwiga9185b42010-03-05 09:21:37 +010037#include <linux/writeback.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
Mike Frysingere5420592008-02-08 04:21:31 -080039#include "ufs_fs.h"
Christoph Hellwigbcd6d4e2007-10-16 23:26:51 -070040#include "ufs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070041#include "swab.h"
42#include "util.h"
43
Al Viro4e3911f2015-06-04 14:13:14 -040044static int ufs_block_to_path(struct inode *inode, sector_t i_block, unsigned offsets[4])
Linus Torvalds1da177e2005-04-16 15:20:36 -070045{
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 Dushistovabf5d152006-06-25 05:47:24 -070055 UFSD("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks);
Roel Kluin37044c82009-06-17 16:26:28 -070056 if (i_block < direct_blocks) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 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 Viro724bb092015-06-17 12:02:56 -040076typedef struct {
77 void *p;
78 union {
79 __fs32 key32;
80 __fs64 key64;
81 };
82 struct buffer_head *bh;
83} Indirect;
84
85static 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
101static 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 Torvalds1da177e2005-04-16 15:20:36 -0700117/*
118 * Returns the location of the fragment from
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300119 * the beginning of the filesystem.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120 */
121
Al Viro4b7068c2015-06-04 14:27:23 -0400122static u64 ufs_frag_map(struct inode *inode, unsigned offsets[4], int depth)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123{
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 Viro724bb092015-06-17 12:02:56 -0400129 Indirect chain[4], *q = chain;
Al Viro4b7068c2015-06-04 14:27:23 -0400130 unsigned *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 unsigned flags = UFS_SB(sb)->s_flags;
Al Viro724bb092015-06-17 12:02:56 -0400132 u64 res = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133
Andrew Morton7256d812006-06-29 02:24:29 -0700134 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 Torvalds1da177e2005-04-16 15:20:36 -0700137
138 if (depth == 0)
Al Viro724bb092015-06-17 12:02:56 -0400139 goto no_block;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140
Al Viro724bb092015-06-17 12:02:56 -0400141again:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 p = offsets;
143
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
145 goto ufs2;
146
Al Viro724bb092015-06-17 12:02:56 -0400147 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 Torvalds1da177e2005-04-16 15:20:36 -0700151 while (--depth) {
Al Viro724bb092015-06-17 12:02:56 -0400152 __fs32 *ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 struct buffer_head *bh;
Al Viro4e3911f2015-06-04 14:13:14 -0400154 unsigned n = *p++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155
Al Viro724bb092015-06-17 12:02:56 -0400156 bh = sb_bread(sb, uspi->s_sbbase +
157 fs32_to_cpu(sb, q->key32) + (n>>shift));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 if (!bh)
Al Viro724bb092015-06-17 12:02:56 -0400159 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 Torvalds1da177e2005-04-16 15:20:36 -0700165 }
Al Viro724bb092015-06-17 12:02:56 -0400166 res = fs32_to_cpu(sb, q->key32);
167 goto found;
168
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169ufs2:
Al Viro724bb092015-06-17 12:02:56 -0400170 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 Torvalds1da177e2005-04-16 15:20:36 -0700174
175 while (--depth) {
Al Viro724bb092015-06-17 12:02:56 -0400176 __fs64 *ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 struct buffer_head *bh;
Al Viro4e3911f2015-06-04 14:13:14 -0400178 unsigned n = *p++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179
Al Viro724bb092015-06-17 12:02:56 -0400180 bh = sb_bread(sb, uspi->s_sbbase +
181 fs64_to_cpu(sb, q->key64) + (n>>shift));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 if (!bh)
Al Viro724bb092015-06-17 12:02:56 -0400183 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 Torvalds1da177e2005-04-16 15:20:36 -0700189 }
Al Viro724bb092015-06-17 12:02:56 -0400190 res = fs64_to_cpu(sb, q->key64);
191found:
Al Viro4b7068c2015-06-04 14:27:23 -0400192 res += uspi->s_sbbase;
Al Viro724bb092015-06-17 12:02:56 -0400193no_block:
194 while (q > chain) {
195 brelse(q->bh);
196 q--;
197 }
198 return res;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199
Al Viro724bb092015-06-17 12:02:56 -0400200changed:
201 while (q > chain) {
202 brelse(q->bh);
203 q--;
204 }
205 goto again;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206}
207
Al Viro0f3c1292015-06-19 13:40:25 -0400208/*
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 */
218static bool
219ufs_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 Dushistov022a6dc2006-06-25 05:47:27 -0700242/**
243 * ufs_inode_getfrag() - allocate new fragment(s)
Fabian Frederickedc023ca2014-08-08 14:21:08 -0700244 * @inode: pointer to inode
Al Viro53369702015-06-19 13:53:52 -0400245 * @index: number of block pointer within the inode's array.
Fabian Frederickedc023ca2014-08-08 14:21:08 -0700246 * @new_fragment: number of new allocated fragment(s)
Fabian Frederickedc023ca2014-08-08 14:21:08 -0700247 * @err: we set it if something wrong
Fabian Frederickedc023ca2014-08-08 14:21:08 -0700248 * @new: we set it if we allocate new block
249 * @locked_page: for ufs_new_fragments()
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700250 */
Al Viro177848a2015-06-19 00:53:06 -0400251static u64
Al Viro53369702015-06-19 13:53:52 -0400252ufs_inode_getfrag(struct inode *inode, unsigned index,
253 sector_t new_fragment, int *err,
Al Viro4e317ce2015-06-19 14:27:10 -0400254 int *new, struct page *locked_page)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255{
256 struct ufs_inode_info *ufsi = UFS_I(inode);
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700257 struct super_block *sb = inode->i_sb;
258 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
Al Viro53369702015-06-19 13:53:52 -0400259 u64 tmp, goal, lastfrag;
Al Viro0f3c1292015-06-19 13:40:25 -0400260 unsigned nfrags = uspi->s_fpb;
261 void *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263 /* TODO : to be done for write support
264 if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
265 goto ufs2;
266 */
267
Al Viro53369702015-06-19 13:53:52 -0400268 p = ufs_get_direct_data_ptr(uspi, ufsi, index);
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800269 tmp = ufs_data_ptr_to_cpu(sb, p);
Al Viro0f3c1292015-06-19 13:40:25 -0400270 if (tmp)
Al Virobbb3eb92015-06-19 00:10:00 -0400271 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272
Al Viro0f3c1292015-06-19 13:40:25 -0400273 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 Viro53369702015-06-19 13:53:52 -0400280 if (index) {
Al Viro0f3c1292015-06-19 13:40:25 -0400281 goal = ufs_data_ptr_to_cpu(sb,
Al Viro53369702015-06-19 13:53:52 -0400282 ufs_get_direct_data_ptr(uspi, ufsi, index - 1));
Al Viro0f3c1292015-06-19 13:40:25 -0400283 if (goal)
284 goal += uspi->s_fpb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285 }
Al Viro53369702015-06-19 13:53:52 -0400286 tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment),
Al Viro4e317ce2015-06-19 14:27:10 -0400287 goal, uspi->s_fpb, err, locked_page);
Al Viro0f3c1292015-06-19 13:40:25 -0400288
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289 if (!tmp) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 *err = -ENOSPC;
Al Viro177848a2015-06-19 00:53:06 -0400291 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 }
293
Al Viro4e317ce2015-06-19 14:27:10 -0400294 if (new)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 *new = 1;
Deepa Dinamani02027d42016-09-14 07:48:05 -0700296 inode->i_ctime = current_time(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 if (IS_SYNC(inode))
298 ufs_sync_inode (inode);
299 mark_inode_dirty(inode);
Al Virobbb3eb92015-06-19 00:10:00 -0400300out:
Al Viro177848a2015-06-19 00:53:06 -0400301 return tmp + uspi->s_sbbase;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302
303 /* This part : To be implemented ....
304 Required only for writing, not required for READ-ONLY.
305ufs2:
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
312repeat2:
313 tmp = fs32_to_cpu(sb, *p);
314 lastfrag = ufsi->i_lastfrag;
315
316 */
317}
318
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700319/**
320 * ufs_inode_getblock() - allocate new block
Fabian Frederickedc023ca2014-08-08 14:21:08 -0700321 * @inode: pointer to inode
Al Viro619cfac2015-06-19 01:23:08 -0400322 * @ind_block: block number of the indirect block
323 * @index: number of pointer within the indirect block
Fabian Frederickedc023ca2014-08-08 14:21:08 -0700324 * @new_fragment: number of new allocated fragment
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700325 * (block will hold this fragment and also uspi->s_fpb-1)
Fabian Frederickedc023ca2014-08-08 14:21:08 -0700326 * @err: see ufs_inode_getfrag()
Fabian Frederickedc023ca2014-08-08 14:21:08 -0700327 * @new: see ufs_inode_getfrag()
328 * @locked_page: see ufs_inode_getfrag()
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700329 */
Al Viro177848a2015-06-19 00:53:06 -0400330static u64
Al Viro619cfac2015-06-19 01:23:08 -0400331ufs_inode_getblock(struct inode *inode, u64 ind_block,
Al Viro721435a2015-06-19 01:06:21 -0400332 unsigned index, sector_t new_fragment, int *err,
Al Viro4e317ce2015-06-19 14:27:10 -0400333 int *new, struct page *locked_page)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334{
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700335 struct super_block *sb = inode->i_sb;
336 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
Al Viro619cfac2015-06-19 01:23:08 -0400337 int shift = uspi->s_apbshift - uspi->s_fpbshift;
Al Viro721435a2015-06-19 01:06:21 -0400338 u64 tmp = 0, goal;
Al Viro619cfac2015-06-19 01:23:08 -0400339 struct buffer_head *bh;
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800340 void *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341
Al Viro619cfac2015-06-19 01:23:08 -0400342 if (!ind_block)
343 return 0;
344
345 bh = sb_bread(sb, ind_block + (index >> shift));
Al Viro5fbfb232015-06-19 14:10:53 -0400346 if (unlikely(!bh)) {
347 *err = -EIO;
Al Viro619cfac2015-06-19 01:23:08 -0400348 return 0;
Al Viro5fbfb232015-06-19 14:10:53 -0400349 }
Al Viro619cfac2015-06-19 01:23:08 -0400350
351 index &= uspi->s_apbmask >> uspi->s_fpbshift;
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800352 if (uspi->fs_magic == UFS2_MAGIC)
Al Viro721435a2015-06-19 01:06:21 -0400353 p = (__fs64 *)bh->b_data + index;
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800354 else
Al Viro721435a2015-06-19 01:06:21 -0400355 p = (__fs32 *)bh->b_data + index;
Al Viro5a39c252015-06-18 22:39:46 -0400356
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800357 tmp = ufs_data_ptr_to_cpu(sb, p);
Al Virobbb3eb92015-06-19 00:10:00 -0400358 if (tmp)
Al Viro5a39c252015-06-18 22:39:46 -0400359 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360
Al Viro721435a2015-06-19 01:06:21 -0400361 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 Torvalds1da177e2005-04-16 15:20:36 -0700364 goal = tmp + uspi->s_fpb;
365 else
366 goal = bh->b_blocknr + uspi->s_fpb;
Evgeniy Dushistov6ef4d6b2006-06-25 05:47:20 -0700367 tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal,
368 uspi->s_fpb, err, locked_page);
Al Viro5a39c252015-06-18 22:39:46 -0400369 if (!tmp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 goto out;
Evgeniy Dushistovc9a27b52006-06-25 05:47:19 -0700371
Al Virobbb3eb92015-06-19 00:10:00 -0400372 if (new)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373 *new = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374
375 mark_buffer_dirty(bh);
376 if (IS_SYNC(inode))
377 sync_dirty_buffer(bh);
Deepa Dinamani02027d42016-09-14 07:48:05 -0700378 inode->i_ctime = current_time(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 mark_inode_dirty(inode);
380out:
381 brelse (bh);
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700382 UFSD("EXIT\n");
Al Viro177848a2015-06-19 00:53:06 -0400383 if (tmp)
384 tmp += uspi->s_sbbase;
385 return tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386}
387
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700388/**
Alessio Igor Bogani7422caa2011-04-08 19:33:07 +0200389 * ufs_getfrag_block() - `get_block_t' function, interface between UFS and
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700390 * readpage, writepage and so on
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391 */
392
Al Viro010d3312015-06-17 12:44:14 -0400393static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394{
Al Viro0385f1f2015-06-19 14:20:21 -0400395 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 Viro4b7068c2015-06-04 14:27:23 -0400398 unsigned offsets[4];
399 int depth = ufs_block_to_path(inode, fragment >> uspi->s_fpbshift, offsets);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 u64 phys64 = 0;
Al Viro177848a2015-06-19 00:53:06 -0400401 unsigned frag = fragment & uspi->s_fpbmask;
Al Viro010d3312015-06-17 12:44:14 -0400402
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 if (!create) {
Al Viro4b7068c2015-06-04 14:27:23 -0400404 phys64 = ufs_frag_map(inode, offsets, depth);
Al Viro0385f1f2015-06-19 14:20:21 -0400405 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 }
407
408 /* This code entered only while writing ....? */
409
Al Viro724bb092015-06-17 12:02:56 -0400410 mutex_lock(&UFS_I(inode)->truncate_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700412 UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment);
Al Viro0385f1f2015-06-19 14:20:21 -0400413 if (unlikely(!depth)) {
414 ufs_warning(sb, "ufs_get_block", "block > big");
415 err = -EIO;
416 goto out;
417 }
Al Viro0f3c1292015-06-19 13:40:25 -0400418
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 Viro0385f1f2015-06-19 14:20:21 -0400425 goto out;
Al Viro0f3c1292015-06-19 13:40:25 -0400426 }
427 }
428
Al Viro71dd4282015-06-04 14:34:43 -0400429 if (depth == 1) {
Al Viro53369702015-06-19 13:53:52 -0400430 phys64 = ufs_inode_getfrag(inode, offsets[0], fragment,
Al Viro4e317ce2015-06-19 14:27:10 -0400431 &err, &new, bh_result->b_page);
Al Viro4eeff4c2015-06-19 14:08:16 -0400432 } else {
433 int i;
Al Viro53369702015-06-19 13:53:52 -0400434 phys64 = ufs_inode_getfrag(inode, offsets[0], fragment,
Al Viro4e317ce2015-06-19 14:27:10 -0400435 &err, NULL, NULL);
Al Viro4eeff4c2015-06-19 14:08:16 -0400436 for (i = 1; i < depth - 1; i++)
437 phys64 = ufs_inode_getblock(inode, phys64, offsets[i],
Al Viro4e317ce2015-06-19 14:27:10 -0400438 fragment, &err, NULL, NULL);
Al Viro4eeff4c2015-06-19 14:08:16 -0400439 phys64 = ufs_inode_getblock(inode, phys64, offsets[depth - 1],
Al Viro4e317ce2015-06-19 14:27:10 -0400440 fragment, &err, &new, bh_result->b_page);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 }
Al Viro0385f1f2015-06-19 14:20:21 -0400442out:
Al Viro177848a2015-06-19 00:53:06 -0400443 if (phys64) {
444 phys64 += frag;
Al Viro0385f1f2015-06-19 14:20:21 -0400445 map_bh(bh_result, sb, phys64);
446 if (new)
447 set_buffer_new(bh_result);
Al Viro177848a2015-06-19 00:53:06 -0400448 }
Al Viro724bb092015-06-17 12:02:56 -0400449 mutex_unlock(&UFS_I(inode)->truncate_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451}
452
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453static int ufs_writepage(struct page *page, struct writeback_control *wbc)
454{
455 return block_write_full_page(page,ufs_getfrag_block,wbc);
456}
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700457
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458static int ufs_readpage(struct file *file, struct page *page)
459{
460 return block_read_full_page(page,ufs_getfrag_block);
461}
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700462
Christoph Hellwigf4e420d2010-06-04 11:29:56 +0200463int ufs_prepare_chunk(struct page *page, loff_t pos, unsigned len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464{
Christoph Hellwig6e1db882010-06-04 11:29:57 +0200465 return __block_write_begin(page, pos, len, ufs_getfrag_block);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466}
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700467
Al Viro010d3312015-06-17 12:44:14 -0400468static void ufs_truncate_blocks(struct inode *);
469
Marco Stornelli83f6e372012-12-15 11:45:14 +0100470static void ufs_write_failed(struct address_space *mapping, loff_t to)
471{
472 struct inode *inode = mapping->host;
473
Al Viro3b7a3a02015-06-16 18:06:40 -0400474 if (to > inode->i_size) {
Kirill A. Shutemov7caef262013-09-12 15:13:56 -0700475 truncate_pagecache(inode, inode->i_size);
Al Viro3b7a3a02015-06-16 18:06:40 -0400476 ufs_truncate_blocks(inode);
477 }
Marco Stornelli83f6e372012-12-15 11:45:14 +0100478}
479
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700480static 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 Hellwig155130a2010-06-04 11:29:58 +0200484 int ret;
485
486 ret = block_write_begin(mapping, pos, len, flags, pagep,
Christoph Hellwigf4e420d2010-06-04 11:29:56 +0200487 ufs_getfrag_block);
Marco Stornelli83f6e372012-12-15 11:45:14 +0100488 if (unlikely(ret))
489 ufs_write_failed(mapping, pos + len);
Christoph Hellwig155130a2010-06-04 11:29:58 +0200490
491 return ret;
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700492}
493
Al Viro3b7a3a02015-06-16 18:06:40 -0400494static 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 Torvalds1da177e2005-04-16 15:20:36 -0700506static sector_t ufs_bmap(struct address_space *mapping, sector_t block)
507{
508 return generic_block_bmap(mapping,block,ufs_getfrag_block);
509}
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700510
Christoph Hellwigf5e54d62006-06-28 04:26:44 -0700511const struct address_space_operations ufs_aops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 .readpage = ufs_readpage,
513 .writepage = ufs_writepage,
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700514 .write_begin = ufs_write_begin,
Al Viro3b7a3a02015-06-16 18:06:40 -0400515 .write_end = ufs_write_end,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 .bmap = ufs_bmap
517};
518
Evgeniy Dushistov826843a2006-06-25 05:47:21 -0700519static 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 Viro4b8061a2015-05-02 10:28:56 -0400530 if (!inode->i_blocks) {
Al Viro4b8061a2015-05-02 10:28:56 -0400531 inode->i_link = (char *)UFS_I(inode)->i_u1.i_symlink;
Al Viro9cdce3c2015-11-15 18:24:17 -0500532 inode->i_op = &simple_symlink_inode_operations;
Al Viro4b8061a2015-05-02 10:28:56 -0400533 } else {
Evgeniy Dushistov826843a2006-06-25 05:47:21 -0700534 inode->i_mapping->a_ops = &ufs_aops;
Al Viro9cdce3c2015-11-15 18:24:17 -0500535 inode->i_op = &page_symlink_inode_operations;
Al Viro21fc61c2015-11-17 01:07:57 -0500536 inode_nohighmem(inode);
Evgeniy Dushistov826843a2006-06-25 05:47:21 -0700537 }
538 } else
539 init_special_inode(inode, inode->i_mode,
540 ufs_get_inode_dev(inode->i_sb, UFS_I(inode)));
541}
542
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700543static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544{
545 struct ufs_inode_info *ufsi = UFS_I(inode);
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700546 struct super_block *sb = inode->i_sb;
Al Viro6a9a06d2011-07-26 02:49:13 -0400547 umode_t mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548
549 /*
550 * Copy data to the in-core inode.
551 */
552 inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode);
Miklos Szeredibfe86842011-10-28 14:13:29 +0200553 set_nlink(inode, fs16_to_cpu(sb, ufs_inode->ui_nlink));
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700554 if (inode->i_nlink == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700556 return -1;
557 }
Al Viro010d3312015-06-17 12:44:14 -0400558
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 /*
560 * Linux now has 32-bit uid and gid, so we can support EFT.
561 */
Eric W. Biederman722354652012-02-10 12:21:22 -0800562 i_uid_write(inode, ufs_get_inode_uid(sb, ufs_inode));
563 i_gid_write(inode, ufs_get_inode_gid(sb, ufs_inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564
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 Dushistov3313e292007-02-12 00:54:31 -0800573 inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575 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 Dushistov05f225dc2006-06-27 02:53:59 -0700577
Al Viro010d3312015-06-17 12:44:14 -0400578
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
Duane Griffinf33219b2009-01-08 22:43:49 +0000580 memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr,
581 sizeof(ufs_inode->ui_u2.ui_addr));
Evgeniy Dushistovdd187a22006-06-25 05:47:25 -0700582 } else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000583 memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink,
Duane Griffinb12903f2009-01-08 22:43:50 +0000584 sizeof(ufs_inode->ui_u2.ui_symlink) - 1);
585 ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586 }
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700587 return 0;
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700588}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700590static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode)
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700591{
592 struct ufs_inode_info *ufsi = UFS_I(inode);
593 struct super_block *sb = inode->i_sb;
Al Viro6a9a06d2011-07-26 02:49:13 -0400594 umode_t mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700596 UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597 /*
598 * Copy data to the in-core inode.
599 */
600 inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode);
Miklos Szeredibfe86842011-10-28 14:13:29 +0200601 set_nlink(inode, fs16_to_cpu(sb, ufs2_inode->ui_nlink));
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700602 if (inode->i_nlink == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700604 return -1;
605 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606
607 /*
608 * Linux now has 32-bit uid and gid, so we can support EFT.
609 */
Eric W. Biederman722354652012-02-10 12:21:22 -0800610 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 Torvalds1da177e2005-04-16 15:20:36 -0700612
613 inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size);
Evgeniy Dushistov21898502007-03-16 13:38:07 -0800614 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 Torvalds1da177e2005-04-16 15:20:36 -0700620 inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800621 inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622 ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623 /*
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 Torvalds1da177e2005-04-16 15:20:36 -0700627
628 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
Duane Griffinf33219b2009-01-08 22:43:49 +0000629 memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr,
630 sizeof(ufs2_inode->ui_u2.ui_addr));
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700631 } else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000632 memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink,
Duane Griffinb12903f2009-01-08 22:43:50 +0000633 sizeof(ufs2_inode->ui_u2.ui_symlink) - 1);
634 ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635 }
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700636 return 0;
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700637}
638
David Howellsb55c4602008-02-07 00:15:48 -0800639struct inode *ufs_iget(struct super_block *sb, unsigned long ino)
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700640{
David Howellsb55c4602008-02-07 00:15:48 -0800641 struct ufs_inode_info *ufsi;
642 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700643 struct buffer_head * bh;
David Howellsb55c4602008-02-07 00:15:48 -0800644 struct inode *inode;
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700645 int err;
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700646
David Howellsb55c4602008-02-07 00:15:48 -0800647 UFSD("ENTER, ino %lu\n", ino);
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700648
David Howellsb55c4602008-02-07 00:15:48 -0800649 if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) {
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700650 ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n",
David Howellsb55c4602008-02-07 00:15:48 -0800651 ino);
652 return ERR_PTR(-EIO);
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700653 }
654
David Howellsb55c4602008-02-07 00:15:48 -0800655 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 Dushistov05f225dc2006-06-27 02:53:59 -0700663 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 Dushistov07a0cfe2007-04-16 22:53:24 -0700672 err = ufs2_read_inode(inode,
673 ufs2_inode + ufs_inotofsbo(inode->i_ino));
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700674 } else {
675 struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data;
676
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700677 err = ufs1_read_inode(inode,
678 ufs_inode + ufs_inotofsbo(inode->i_ino));
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700679 }
680
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700681 if (err)
682 goto bad_inode;
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700683 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 Torvalds1da177e2005-04-16 15:20:36 -0700687 ufsi->i_osync = 0;
688
Evgeniy Dushistov826843a2006-06-25 05:47:21 -0700689 ufs_set_inode_ops(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690
691 brelse(bh);
692
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700693 UFSD("EXIT\n");
David Howellsb55c4602008-02-07 00:15:48 -0800694 unlock_new_inode(inode);
695 return inode;
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700696
697bad_inode:
David Howellsb55c4602008-02-07 00:15:48 -0800698 iget_failed(inode);
699 return ERR_PTR(-EIO);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700}
701
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800702static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703{
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800704 struct super_block *sb = inode->i_sb;
705 struct ufs_inode_info *ufsi = UFS_I(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706
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. Biederman722354652012-02-10 12:21:22 -0800710 ufs_set_inode_uid(sb, ufs_inode, i_uid_read(inode));
711 ufs_set_inode_gid(sb, ufs_inode, i_gid_read(inode));
Al Viro010d3312015-06-17 12:44:14 -0400712
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713 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 Dushistov3313e292007-02-12 00:54:31 -0800722 ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800724 if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725 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 Griffinf33219b2009-01-08 22:43:49 +0000733 memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data,
734 sizeof(ufs_inode->ui_u2.ui_addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735 }
736 else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000737 memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink,
738 sizeof(ufs_inode->ui_u2.ui_symlink));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739 }
740
741 if (!inode->i_nlink)
742 memset (ufs_inode, 0, sizeof(struct ufs_inode));
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800743}
744
745static 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 Dushistov3313e292007-02-12 00:54:31 -0800749
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. Biederman722354652012-02-10 12:21:22 -0800754 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 Dushistov3313e292007-02-12 00:54:31 -0800756
757 ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
Evgeniy Dushistov21898502007-03-16 13:38:07 -0800758 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 Dushistov3313e292007-02-12 00:54:31 -0800764
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 Griffinf33219b2009-01-08 22:43:49 +0000773 memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data,
774 sizeof(ufs_inode->ui_u2.ui_addr));
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800775 } else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000776 memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink,
777 sizeof(ufs_inode->ui_u2.ui_symlink));
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800778 }
779
780 if (!inode->i_nlink)
781 memset (ufs_inode, 0, sizeof(struct ufs2_inode));
782 UFSD("EXIT\n");
783}
784
785static 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 Viro010d3312015-06-17 12:44:14 -0400814
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815 mark_buffer_dirty(bh);
816 if (do_sync)
817 sync_dirty_buffer(bh);
818 brelse (bh);
Al Viro010d3312015-06-17 12:44:14 -0400819
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700820 UFSD("EXIT\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821 return 0;
822}
823
Christoph Hellwiga9185b42010-03-05 09:21:37 +0100824int ufs_write_inode(struct inode *inode, struct writeback_control *wbc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825{
Al Virof3e0f3d2015-06-16 02:35:14 -0400826 return ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827}
828
829int ufs_sync_inode (struct inode *inode)
830{
831 return ufs_update_inode (inode, 1);
832}
833
Al Viro58e82682010-06-05 19:40:56 -0400834void ufs_evict_inode(struct inode * inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835{
Al Viro58e82682010-06-05 19:40:56 -0400836 int want_delete = 0;
837
838 if (!inode->i_nlink && !is_bad_inode(inode))
839 want_delete = 1;
Evgeniy Dushistov10e5dce2006-07-01 04:36:24 -0700840
Johannes Weiner91b0abe2014-04-03 14:47:49 -0700841 truncate_inode_pages_final(&inode->i_data);
Al Viro58e82682010-06-05 19:40:56 -0400842 if (want_delete) {
Al Viro58e82682010-06-05 19:40:56 -0400843 inode->i_size = 0;
Al Virod622f1672015-06-16 18:04:16 -0400844 if (inode->i_blocks)
845 ufs_truncate_blocks(inode);
Al Viro58e82682010-06-05 19:40:56 -0400846 }
847
848 invalidate_inode_buffers(inode);
Jan Karadbd57682012-05-03 14:48:02 +0200849 clear_inode(inode);
Al Viro58e82682010-06-05 19:40:56 -0400850
Al Virof3e0f3d2015-06-16 02:35:14 -0400851 if (want_delete)
Alexey Khoroshilov9ef7db72014-09-02 11:40:17 +0400852 ufs_free_inode(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853}
Al Viro010d3312015-06-17 12:44:14 -0400854
Al Viroa138b4b2015-06-18 02:18:54 -0400855struct to_free {
856 struct inode *inode;
857 u64 to;
858 unsigned count;
859};
860
861static 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 Viro010d3312015-06-17 12:44:14 -0400871#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
874static 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 Viroa138b4b2015-06-18 02:18:54 -0400881 struct to_free ctx = {.inode = inode};
Al Viro010d3312015-06-17 12:44:14 -0400882 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 Viro010d3312015-06-17 12:44:14 -0400889 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 Viro010d3312015-06-17 12:44:14 -0400922
923next1:
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 Viroa138b4b2015-06-18 02:18:54 -0400936 free_data(&ctx, tmp, uspi->s_fpb);
Al Viro010d3312015-06-17 12:44:14 -0400937 }
938
Al Viroa138b4b2015-06-18 02:18:54 -0400939 free_data(&ctx, 0, 0);
Al Viro010d3312015-06-17 12:44:14 -0400940
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 Viro010d3312015-06-17 12:44:14 -0400957 next3:
958
959 UFSD("EXIT: ino %lu\n", inode->i_ino);
960}
961
Al Viro163073d2015-06-18 20:07:08 -0400962static void free_full_branch(struct inode *inode, u64 ind_block, int depth)
Al Viro010d3312015-06-17 12:44:14 -0400963{
964 struct super_block *sb = inode->i_sb;
965 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
Al Viro163073d2015-06-18 20:07:08 -0400966 struct ufs_buffer_head *ubh = ubh_bread(sb, ind_block, uspi->s_bsize);
Al Viro18ca51d2015-06-18 13:45:07 -0400967 unsigned i;
Al Viro010d3312015-06-17 12:44:14 -0400968
Al Viro163073d2015-06-18 20:07:08 -0400969 if (!ubh)
Al Viro010d3312015-06-17 12:44:14 -0400970 return;
Al Viro010d3312015-06-17 12:44:14 -0400971
Al Viro9e0fbbd2015-06-18 15:33:47 -0400972 if (--depth) {
Al Viro163073d2015-06-18 20:07:08 -0400973 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 Virocc7231e2015-06-18 20:14:02 -0400976 if (block)
Al Viro163073d2015-06-18 20:07:08 -0400977 free_full_branch(inode, block, depth);
Al Viro6d1ebbc2015-06-18 17:11:49 -0400978 }
979 } else {
980 struct to_free ctx = {.inode = inode};
981
982 for (i = 0; i < uspi->s_apb; i++) {
Al Viro163073d2015-06-18 20:07:08 -0400983 void *p = ubh_get_data_ptr(uspi, ubh, i);
984 u64 block = ufs_data_ptr_to_cpu(sb, p);
Al Virocc7231e2015-06-18 20:14:02 -0400985 if (block)
Al Viro163073d2015-06-18 20:07:08 -0400986 free_data(&ctx, block, uspi->s_fpb);
Al Viro6d1ebbc2015-06-18 17:11:49 -0400987 }
988 free_data(&ctx, 0, 0);
989 }
Al Viro6d1ebbc2015-06-18 17:11:49 -0400990
991 ubh_bforget(ubh);
Al Viro163073d2015-06-18 20:07:08 -0400992 ufs_free_blocks(inode, ind_block, uspi->s_fpb);
Al Viro6d1ebbc2015-06-18 17:11:49 -0400993}
994
Al Viro7b4e4f72015-06-18 19:13:02 -0400995static void free_branch_tail(struct inode *inode, unsigned from, struct ufs_buffer_head *ubh, int depth)
Al Viro6d1ebbc2015-06-18 17:11:49 -0400996{
997 struct super_block *sb = inode->i_sb;
998 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
Al Viro6d1ebbc2015-06-18 17:11:49 -0400999 unsigned i;
1000
Al Viro6d1ebbc2015-06-18 17:11:49 -04001001 if (--depth) {
Al Viro7b4e4f72015-06-18 19:13:02 -04001002 for (i = from; i < uspi->s_apb ; i++) {
Al Viro163073d2015-06-18 20:07:08 -04001003 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 Viroa9657422015-06-18 16:13:56 -04001012 }
Al Viro9e0fbbd2015-06-18 15:33:47 -04001013 } else {
Al Viroa138b4b2015-06-18 02:18:54 -04001014 struct to_free ctx = {.inode = inode};
Al Viro9e0fbbd2015-06-18 15:33:47 -04001015
1016 for (i = from; i < uspi->s_apb; i++) {
Al Viro163073d2015-06-18 20:07:08 -04001017 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 Viro163073d2015-06-18 20:07:08 -04001025 }
Al Viro9e0fbbd2015-06-18 15:33:47 -04001026 }
Al Viroa138b4b2015-06-18 02:18:54 -04001027 free_data(&ctx, 0, 0);
Al Viro010d3312015-06-17 12:44:14 -04001028 }
Al Viro9e0fbbd2015-06-18 15:33:47 -04001029 if (IS_SYNC(inode) && ubh_buffer_dirty(ubh))
1030 ubh_sync_block(ubh);
1031 ubh_brelse(ubh);
Al Viro010d3312015-06-17 12:44:14 -04001032}
1033
1034static 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. Shutemov09cbfea2016-04-01 15:29:47 +03001054 (PAGE_SHIFT - inode->i_blkbits));
Al Viro010d3312015-06-17 12:44:14 -04001055 if (IS_ERR(lastpage)) {
1056 err = -EIO;
1057 goto out;
1058 }
1059
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03001060 end = lastfrag & ((1 << (PAGE_SHIFT - inode->i_blkbits)) - 1);
Al Viro010d3312015-06-17 12:44:14 -04001061 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);
Jan Karae64855c2016-11-04 18:08:15 +01001073 clean_bdev_bh_alias(bh);
Al Viro010d3312015-06-17 12:44:14 -04001074 /*
1075 * we do not zeroize fragment, because of
1076 * if it maped to hole, it already contains zeroes
1077 */
1078 set_buffer_uptodate(bh);
1079 mark_buffer_dirty(bh);
1080 set_page_dirty(lastpage);
1081 }
1082
1083 if (lastfrag >= UFS_IND_FRAGMENT) {
1084 end = uspi->s_fpb - ufs_fragnum(lastfrag) - 1;
1085 phys64 = bh->b_blocknr + 1;
1086 for (i = 0; i < end; ++i) {
1087 bh = sb_getblk(sb, i + phys64);
1088 lock_buffer(bh);
1089 memset(bh->b_data, 0, sb->s_blocksize);
1090 set_buffer_uptodate(bh);
1091 mark_buffer_dirty(bh);
1092 unlock_buffer(bh);
1093 sync_dirty_buffer(bh);
1094 brelse(bh);
1095 }
1096 }
1097out_unlock:
1098 ufs_put_locked_page(lastpage);
1099out:
1100 return err;
1101}
1102
1103static void __ufs_truncate_blocks(struct inode *inode)
1104{
1105 struct ufs_inode_info *ufsi = UFS_I(inode);
1106 struct super_block *sb = inode->i_sb;
1107 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
Al Viro7bad5932015-06-18 14:21:09 -04001108 unsigned offsets[4];
Al Viro31cd0432015-06-17 01:10:03 -04001109 int depth = ufs_block_to_path(inode, DIRECT_BLOCK, offsets);
Al Viro6775e242015-06-18 14:55:50 -04001110 int depth2;
Al Viro42432732015-06-18 15:47:17 -04001111 unsigned i;
Al Viro7b4e4f72015-06-18 19:13:02 -04001112 struct ufs_buffer_head *ubh[3];
1113 void *p;
1114 u64 block;
Al Viro6775e242015-06-18 14:55:50 -04001115
1116 if (!depth)
1117 return;
1118
1119 /* find the last non-zero in offsets[] */
1120 for (depth2 = depth - 1; depth2; depth2--)
1121 if (offsets[depth2])
1122 break;
Al Viro010d3312015-06-17 12:44:14 -04001123
1124 mutex_lock(&ufsi->truncate_mutex);
Al Viro42432732015-06-18 15:47:17 -04001125 if (depth == 1) {
Al Viro31cd0432015-06-17 01:10:03 -04001126 ufs_trunc_direct(inode);
Al Viro42432732015-06-18 15:47:17 -04001127 offsets[0] = UFS_IND_BLOCK;
1128 } else {
Al Viro7b4e4f72015-06-18 19:13:02 -04001129 /* get the blocks that should be partially emptied */
1130 p = ufs_get_direct_data_ptr(uspi, ufsi, offsets[0]);
1131 for (i = 0; i < depth2; i++) {
1132 offsets[i]++; /* next branch is fully freed */
1133 block = ufs_data_ptr_to_cpu(sb, p);
1134 if (!block)
1135 break;
1136 ubh[i] = ubh_bread(sb, block, uspi->s_bsize);
1137 if (!ubh[i]) {
1138 write_seqlock(&ufsi->meta_lock);
1139 ufs_data_ptr_clear(uspi, p);
1140 write_sequnlock(&ufsi->meta_lock);
1141 break;
1142 }
1143 p = ubh_get_data_ptr(uspi, ubh[i], offsets[i + 1]);
1144 }
Al Virof53bd142015-06-18 20:17:32 -04001145 while (i--)
Al Viro7b4e4f72015-06-18 19:13:02 -04001146 free_branch_tail(inode, offsets[i + 1], ubh[i], depth - i - 1);
Al Viro31cd0432015-06-17 01:10:03 -04001147 }
Al Viro42432732015-06-18 15:47:17 -04001148 for (i = offsets[0]; i <= UFS_TIND_BLOCK; i++) {
Al Viro163073d2015-06-18 20:07:08 -04001149 p = ufs_get_direct_data_ptr(uspi, ufsi, i);
1150 block = ufs_data_ptr_to_cpu(sb, p);
1151 if (block) {
1152 write_seqlock(&ufsi->meta_lock);
1153 ufs_data_ptr_clear(uspi, p);
1154 write_sequnlock(&ufsi->meta_lock);
1155 free_full_branch(inode, block, i - UFS_IND_BLOCK + 1);
1156 }
Al Viro42432732015-06-18 15:47:17 -04001157 }
Al Viro010d3312015-06-17 12:44:14 -04001158 ufsi->i_lastfrag = DIRECT_FRAGMENT;
Al Virob6eede02015-06-18 20:09:39 -04001159 mark_inode_dirty(inode);
Al Viro010d3312015-06-17 12:44:14 -04001160 mutex_unlock(&ufsi->truncate_mutex);
1161}
1162
1163static int ufs_truncate(struct inode *inode, loff_t size)
1164{
1165 int err = 0;
1166
1167 UFSD("ENTER: ino %lu, i_size: %llu, old_i_size: %llu\n",
1168 inode->i_ino, (unsigned long long)size,
1169 (unsigned long long)i_size_read(inode));
1170
1171 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
1172 S_ISLNK(inode->i_mode)))
1173 return -EINVAL;
1174 if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
1175 return -EPERM;
1176
1177 err = ufs_alloc_lastblock(inode, size);
1178
1179 if (err)
1180 goto out;
1181
1182 block_truncate_page(inode->i_mapping, size, ufs_getfrag_block);
1183
1184 truncate_setsize(inode, size);
1185
1186 __ufs_truncate_blocks(inode);
Deepa Dinamani02027d42016-09-14 07:48:05 -07001187 inode->i_mtime = inode->i_ctime = current_time(inode);
Al Viro010d3312015-06-17 12:44:14 -04001188 mark_inode_dirty(inode);
1189out:
1190 UFSD("EXIT: err %d\n", err);
1191 return err;
1192}
1193
Jeff Laytonf698ccc2016-12-20 10:56:28 -05001194static void ufs_truncate_blocks(struct inode *inode)
Al Viro010d3312015-06-17 12:44:14 -04001195{
1196 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
1197 S_ISLNK(inode->i_mode)))
1198 return;
1199 if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
1200 return;
1201 __ufs_truncate_blocks(inode);
1202}
1203
1204int ufs_setattr(struct dentry *dentry, struct iattr *attr)
1205{
1206 struct inode *inode = d_inode(dentry);
1207 unsigned int ia_valid = attr->ia_valid;
1208 int error;
1209
Jan Kara31051c82016-05-26 16:55:18 +02001210 error = setattr_prepare(dentry, attr);
Al Viro010d3312015-06-17 12:44:14 -04001211 if (error)
1212 return error;
1213
1214 if (ia_valid & ATTR_SIZE && attr->ia_size != inode->i_size) {
1215 error = ufs_truncate(inode, attr->ia_size);
1216 if (error)
1217 return error;
1218 }
1219
1220 setattr_copy(inode, attr);
1221 mark_inode_dirty(inode);
1222 return 0;
1223}
1224
1225const struct inode_operations ufs_file_inode_operations = {
1226 .setattr = ufs_setattr,
1227};