blob: a064cf44b1435c838a5f446f048ed00b68d48e7b [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
28#include <asm/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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 inode->i_ctime = CURRENT_TIME_SEC;
297 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);
378 inode->i_ctime = CURRENT_TIME_SEC;
379 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) {
Evgeniy Dushistov826843a2006-06-25 05:47:21 -0700531 inode->i_op = &ufs_fast_symlink_inode_operations;
Al Viro4b8061a2015-05-02 10:28:56 -0400532 inode->i_link = (char *)UFS_I(inode)->i_u1.i_symlink;
533 } else {
Dmitry Monakhov311b95492010-04-15 00:56:58 +0200534 inode->i_op = &ufs_symlink_inode_operations;
Evgeniy Dushistov826843a2006-06-25 05:47:21 -0700535 inode->i_mapping->a_ops = &ufs_aops;
536 }
537 } else
538 init_special_inode(inode, inode->i_mode,
539 ufs_get_inode_dev(inode->i_sb, UFS_I(inode)));
540}
541
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700542static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543{
544 struct ufs_inode_info *ufsi = UFS_I(inode);
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700545 struct super_block *sb = inode->i_sb;
Al Viro6a9a06d2011-07-26 02:49:13 -0400546 umode_t mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547
548 /*
549 * Copy data to the in-core inode.
550 */
551 inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode);
Miklos Szeredibfe86842011-10-28 14:13:29 +0200552 set_nlink(inode, fs16_to_cpu(sb, ufs_inode->ui_nlink));
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700553 if (inode->i_nlink == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700555 return -1;
556 }
Al Viro010d3312015-06-17 12:44:14 -0400557
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558 /*
559 * Linux now has 32-bit uid and gid, so we can support EFT.
560 */
Eric W. Biederman722354652012-02-10 12:21:22 -0800561 i_uid_write(inode, ufs_get_inode_uid(sb, ufs_inode));
562 i_gid_write(inode, ufs_get_inode_gid(sb, ufs_inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563
564 inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size);
565 inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec);
566 inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec);
567 inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec);
568 inode->i_mtime.tv_nsec = 0;
569 inode->i_atime.tv_nsec = 0;
570 inode->i_ctime.tv_nsec = 0;
571 inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800572 inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573 ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
575 ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700576
Al Viro010d3312015-06-17 12:44:14 -0400577
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
Duane Griffinf33219b2009-01-08 22:43:49 +0000579 memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr,
580 sizeof(ufs_inode->ui_u2.ui_addr));
Evgeniy Dushistovdd187a22006-06-25 05:47:25 -0700581 } else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000582 memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink,
Duane Griffinb12903f2009-01-08 22:43:50 +0000583 sizeof(ufs_inode->ui_u2.ui_symlink) - 1);
584 ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585 }
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700586 return 0;
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700587}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700589static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode)
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700590{
591 struct ufs_inode_info *ufsi = UFS_I(inode);
592 struct super_block *sb = inode->i_sb;
Al Viro6a9a06d2011-07-26 02:49:13 -0400593 umode_t mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700595 UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596 /*
597 * Copy data to the in-core inode.
598 */
599 inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode);
Miklos Szeredibfe86842011-10-28 14:13:29 +0200600 set_nlink(inode, fs16_to_cpu(sb, ufs2_inode->ui_nlink));
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700601 if (inode->i_nlink == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700603 return -1;
604 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605
606 /*
607 * Linux now has 32-bit uid and gid, so we can support EFT.
608 */
Eric W. Biederman722354652012-02-10 12:21:22 -0800609 i_uid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_uid));
610 i_gid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_gid));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611
612 inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size);
Evgeniy Dushistov21898502007-03-16 13:38:07 -0800613 inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime);
614 inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime);
615 inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime);
616 inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec);
617 inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec);
618 inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619 inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800620 inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621 ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622 /*
623 ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
624 ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
625 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626
627 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
Duane Griffinf33219b2009-01-08 22:43:49 +0000628 memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr,
629 sizeof(ufs2_inode->ui_u2.ui_addr));
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700630 } else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000631 memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink,
Duane Griffinb12903f2009-01-08 22:43:50 +0000632 sizeof(ufs2_inode->ui_u2.ui_symlink) - 1);
633 ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 }
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700635 return 0;
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700636}
637
David Howellsb55c4602008-02-07 00:15:48 -0800638struct inode *ufs_iget(struct super_block *sb, unsigned long ino)
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700639{
David Howellsb55c4602008-02-07 00:15:48 -0800640 struct ufs_inode_info *ufsi;
641 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700642 struct buffer_head * bh;
David Howellsb55c4602008-02-07 00:15:48 -0800643 struct inode *inode;
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700644 int err;
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700645
David Howellsb55c4602008-02-07 00:15:48 -0800646 UFSD("ENTER, ino %lu\n", ino);
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700647
David Howellsb55c4602008-02-07 00:15:48 -0800648 if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) {
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700649 ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n",
David Howellsb55c4602008-02-07 00:15:48 -0800650 ino);
651 return ERR_PTR(-EIO);
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700652 }
653
David Howellsb55c4602008-02-07 00:15:48 -0800654 inode = iget_locked(sb, ino);
655 if (!inode)
656 return ERR_PTR(-ENOMEM);
657 if (!(inode->i_state & I_NEW))
658 return inode;
659
660 ufsi = UFS_I(inode);
661
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700662 bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino));
663 if (!bh) {
664 ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n",
665 inode->i_ino);
666 goto bad_inode;
667 }
668 if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
669 struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data;
670
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700671 err = ufs2_read_inode(inode,
672 ufs2_inode + ufs_inotofsbo(inode->i_ino));
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700673 } else {
674 struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data;
675
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700676 err = ufs1_read_inode(inode,
677 ufs_inode + ufs_inotofsbo(inode->i_ino));
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700678 }
679
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700680 if (err)
681 goto bad_inode;
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700682 inode->i_version++;
683 ufsi->i_lastfrag =
684 (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift;
685 ufsi->i_dir_start_lookup = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686 ufsi->i_osync = 0;
687
Evgeniy Dushistov826843a2006-06-25 05:47:21 -0700688 ufs_set_inode_ops(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689
690 brelse(bh);
691
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700692 UFSD("EXIT\n");
David Howellsb55c4602008-02-07 00:15:48 -0800693 unlock_new_inode(inode);
694 return inode;
Evgeniy Dushistov05f225dc2006-06-27 02:53:59 -0700695
696bad_inode:
David Howellsb55c4602008-02-07 00:15:48 -0800697 iget_failed(inode);
698 return ERR_PTR(-EIO);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699}
700
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800701static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700702{
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800703 struct super_block *sb = inode->i_sb;
704 struct ufs_inode_info *ufsi = UFS_I(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705
706 ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
707 ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
708
Eric W. Biederman722354652012-02-10 12:21:22 -0800709 ufs_set_inode_uid(sb, ufs_inode, i_uid_read(inode));
710 ufs_set_inode_gid(sb, ufs_inode, i_gid_read(inode));
Al Viro010d3312015-06-17 12:44:14 -0400711
Linus Torvalds1da177e2005-04-16 15:20:36 -0700712 ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
713 ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec);
714 ufs_inode->ui_atime.tv_usec = 0;
715 ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec);
716 ufs_inode->ui_ctime.tv_usec = 0;
717 ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec);
718 ufs_inode->ui_mtime.tv_usec = 0;
719 ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks);
720 ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800721 ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800723 if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700724 ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow);
725 ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag);
726 }
727
728 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
729 /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */
730 ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0];
731 } else if (inode->i_blocks) {
Duane Griffinf33219b2009-01-08 22:43:49 +0000732 memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data,
733 sizeof(ufs_inode->ui_u2.ui_addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734 }
735 else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000736 memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink,
737 sizeof(ufs_inode->ui_u2.ui_symlink));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738 }
739
740 if (!inode->i_nlink)
741 memset (ufs_inode, 0, sizeof(struct ufs_inode));
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800742}
743
744static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode)
745{
746 struct super_block *sb = inode->i_sb;
747 struct ufs_inode_info *ufsi = UFS_I(inode);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800748
749 UFSD("ENTER\n");
750 ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
751 ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
752
Eric W. Biederman722354652012-02-10 12:21:22 -0800753 ufs_inode->ui_uid = cpu_to_fs32(sb, i_uid_read(inode));
754 ufs_inode->ui_gid = cpu_to_fs32(sb, i_gid_read(inode));
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800755
756 ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
Evgeniy Dushistov21898502007-03-16 13:38:07 -0800757 ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec);
758 ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec);
759 ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec);
760 ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec);
761 ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec);
762 ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800763
764 ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks);
765 ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags);
766 ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation);
767
768 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
769 /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */
770 ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0];
771 } else if (inode->i_blocks) {
Duane Griffinf33219b2009-01-08 22:43:49 +0000772 memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data,
773 sizeof(ufs_inode->ui_u2.ui_addr));
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800774 } else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000775 memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink,
776 sizeof(ufs_inode->ui_u2.ui_symlink));
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800777 }
778
779 if (!inode->i_nlink)
780 memset (ufs_inode, 0, sizeof(struct ufs2_inode));
781 UFSD("EXIT\n");
782}
783
784static int ufs_update_inode(struct inode * inode, int do_sync)
785{
786 struct super_block *sb = inode->i_sb;
787 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
788 struct buffer_head * bh;
789
790 UFSD("ENTER, ino %lu\n", inode->i_ino);
791
792 if (inode->i_ino < UFS_ROOTINO ||
793 inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) {
794 ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino);
795 return -1;
796 }
797
798 bh = sb_bread(sb, ufs_inotofsba(inode->i_ino));
799 if (!bh) {
800 ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino);
801 return -1;
802 }
803 if (uspi->fs_magic == UFS2_MAGIC) {
804 struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data;
805
806 ufs2_update_inode(inode,
807 ufs2_inode + ufs_inotofsbo(inode->i_ino));
808 } else {
809 struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data;
810
811 ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino));
812 }
Al Viro010d3312015-06-17 12:44:14 -0400813
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814 mark_buffer_dirty(bh);
815 if (do_sync)
816 sync_dirty_buffer(bh);
817 brelse (bh);
Al Viro010d3312015-06-17 12:44:14 -0400818
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700819 UFSD("EXIT\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 return 0;
821}
822
Christoph Hellwiga9185b42010-03-05 09:21:37 +0100823int ufs_write_inode(struct inode *inode, struct writeback_control *wbc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824{
Al Virof3e0f3d2015-06-16 02:35:14 -0400825 return ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700826}
827
828int ufs_sync_inode (struct inode *inode)
829{
830 return ufs_update_inode (inode, 1);
831}
832
Al Viro58e82682010-06-05 19:40:56 -0400833void ufs_evict_inode(struct inode * inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834{
Al Viro58e82682010-06-05 19:40:56 -0400835 int want_delete = 0;
836
837 if (!inode->i_nlink && !is_bad_inode(inode))
838 want_delete = 1;
Evgeniy Dushistov10e5dce2006-07-01 04:36:24 -0700839
Johannes Weiner91b0abe2014-04-03 14:47:49 -0700840 truncate_inode_pages_final(&inode->i_data);
Al Viro58e82682010-06-05 19:40:56 -0400841 if (want_delete) {
Al Viro58e82682010-06-05 19:40:56 -0400842 inode->i_size = 0;
Al Virod622f1672015-06-16 18:04:16 -0400843 if (inode->i_blocks)
844 ufs_truncate_blocks(inode);
Al Viro58e82682010-06-05 19:40:56 -0400845 }
846
847 invalidate_inode_buffers(inode);
Jan Karadbd57682012-05-03 14:48:02 +0200848 clear_inode(inode);
Al Viro58e82682010-06-05 19:40:56 -0400849
Al Virof3e0f3d2015-06-16 02:35:14 -0400850 if (want_delete)
Alexey Khoroshilov9ef7db72014-09-02 11:40:17 +0400851 ufs_free_inode(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852}
Al Viro010d3312015-06-17 12:44:14 -0400853
Al Viroa138b4b2015-06-18 02:18:54 -0400854struct to_free {
855 struct inode *inode;
856 u64 to;
857 unsigned count;
858};
859
860static inline void free_data(struct to_free *ctx, u64 from, unsigned count)
861{
862 if (ctx->count && ctx->to != from) {
863 ufs_free_blocks(ctx->inode, ctx->to - ctx->count, ctx->count);
864 ctx->count = 0;
865 }
866 ctx->count += count;
867 ctx->to = from + count;
868}
869
Al Viro010d3312015-06-17 12:44:14 -0400870#define DIRECT_BLOCK ((inode->i_size + uspi->s_bsize - 1) >> uspi->s_bshift)
871#define DIRECT_FRAGMENT ((inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift)
872
873static void ufs_trunc_direct(struct inode *inode)
874{
875 struct ufs_inode_info *ufsi = UFS_I(inode);
876 struct super_block * sb;
877 struct ufs_sb_private_info * uspi;
878 void *p;
879 u64 frag1, frag2, frag3, frag4, block1, block2;
Al Viroa138b4b2015-06-18 02:18:54 -0400880 struct to_free ctx = {.inode = inode};
Al Viro010d3312015-06-17 12:44:14 -0400881 unsigned i, tmp;
882
883 UFSD("ENTER: ino %lu\n", inode->i_ino);
884
885 sb = inode->i_sb;
886 uspi = UFS_SB(sb)->s_uspi;
887
Al Viro010d3312015-06-17 12:44:14 -0400888 frag1 = DIRECT_FRAGMENT;
889 frag4 = min_t(u64, UFS_NDIR_FRAGMENT, ufsi->i_lastfrag);
890 frag2 = ((frag1 & uspi->s_fpbmask) ? ((frag1 | uspi->s_fpbmask) + 1) : frag1);
891 frag3 = frag4 & ~uspi->s_fpbmask;
892 block1 = block2 = 0;
893 if (frag2 > frag3) {
894 frag2 = frag4;
895 frag3 = frag4 = 0;
896 } else if (frag2 < frag3) {
897 block1 = ufs_fragstoblks (frag2);
898 block2 = ufs_fragstoblks (frag3);
899 }
900
901 UFSD("ino %lu, frag1 %llu, frag2 %llu, block1 %llu, block2 %llu,"
902 " frag3 %llu, frag4 %llu\n", inode->i_ino,
903 (unsigned long long)frag1, (unsigned long long)frag2,
904 (unsigned long long)block1, (unsigned long long)block2,
905 (unsigned long long)frag3, (unsigned long long)frag4);
906
907 if (frag1 >= frag2)
908 goto next1;
909
910 /*
911 * Free first free fragments
912 */
913 p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag1));
914 tmp = ufs_data_ptr_to_cpu(sb, p);
915 if (!tmp )
916 ufs_panic (sb, "ufs_trunc_direct", "internal error");
917 frag2 -= frag1;
918 frag1 = ufs_fragnum (frag1);
919
920 ufs_free_fragments(inode, tmp + frag1, frag2);
Al Viro010d3312015-06-17 12:44:14 -0400921
922next1:
923 /*
924 * Free whole blocks
925 */
926 for (i = block1 ; i < block2; i++) {
927 p = ufs_get_direct_data_ptr(uspi, ufsi, i);
928 tmp = ufs_data_ptr_to_cpu(sb, p);
929 if (!tmp)
930 continue;
931 write_seqlock(&ufsi->meta_lock);
932 ufs_data_ptr_clear(uspi, p);
933 write_sequnlock(&ufsi->meta_lock);
934
Al Viroa138b4b2015-06-18 02:18:54 -0400935 free_data(&ctx, tmp, uspi->s_fpb);
Al Viro010d3312015-06-17 12:44:14 -0400936 }
937
Al Viroa138b4b2015-06-18 02:18:54 -0400938 free_data(&ctx, 0, 0);
Al Viro010d3312015-06-17 12:44:14 -0400939
940 if (frag3 >= frag4)
941 goto next3;
942
943 /*
944 * Free last free fragments
945 */
946 p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag3));
947 tmp = ufs_data_ptr_to_cpu(sb, p);
948 if (!tmp )
949 ufs_panic(sb, "ufs_truncate_direct", "internal error");
950 frag4 = ufs_fragnum (frag4);
951 write_seqlock(&ufsi->meta_lock);
952 ufs_data_ptr_clear(uspi, p);
953 write_sequnlock(&ufsi->meta_lock);
954
955 ufs_free_fragments (inode, tmp, frag4);
Al Viro010d3312015-06-17 12:44:14 -0400956 next3:
957
958 UFSD("EXIT: ino %lu\n", inode->i_ino);
959}
960
Al Viro163073d2015-06-18 20:07:08 -0400961static void free_full_branch(struct inode *inode, u64 ind_block, int depth)
Al Viro010d3312015-06-17 12:44:14 -0400962{
963 struct super_block *sb = inode->i_sb;
964 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
Al Viro163073d2015-06-18 20:07:08 -0400965 struct ufs_buffer_head *ubh = ubh_bread(sb, ind_block, uspi->s_bsize);
Al Viro18ca51d2015-06-18 13:45:07 -0400966 unsigned i;
Al Viro010d3312015-06-17 12:44:14 -0400967
Al Viro163073d2015-06-18 20:07:08 -0400968 if (!ubh)
Al Viro010d3312015-06-17 12:44:14 -0400969 return;
Al Viro010d3312015-06-17 12:44:14 -0400970
Al Viro9e0fbbd2015-06-18 15:33:47 -0400971 if (--depth) {
Al Viro163073d2015-06-18 20:07:08 -0400972 for (i = 0; i < uspi->s_apb; i++) {
973 void *p = ubh_get_data_ptr(uspi, ubh, i);
974 u64 block = ufs_data_ptr_to_cpu(sb, p);
Al Virocc7231e2015-06-18 20:14:02 -0400975 if (block)
Al Viro163073d2015-06-18 20:07:08 -0400976 free_full_branch(inode, block, depth);
Al Viro6d1ebbc2015-06-18 17:11:49 -0400977 }
978 } else {
979 struct to_free ctx = {.inode = inode};
980
981 for (i = 0; i < uspi->s_apb; i++) {
Al Viro163073d2015-06-18 20:07:08 -0400982 void *p = ubh_get_data_ptr(uspi, ubh, i);
983 u64 block = ufs_data_ptr_to_cpu(sb, p);
Al Virocc7231e2015-06-18 20:14:02 -0400984 if (block)
Al Viro163073d2015-06-18 20:07:08 -0400985 free_data(&ctx, block, uspi->s_fpb);
Al Viro6d1ebbc2015-06-18 17:11:49 -0400986 }
987 free_data(&ctx, 0, 0);
988 }
Al Viro6d1ebbc2015-06-18 17:11:49 -0400989
990 ubh_bforget(ubh);
Al Viro163073d2015-06-18 20:07:08 -0400991 ufs_free_blocks(inode, ind_block, uspi->s_fpb);
Al Viro6d1ebbc2015-06-18 17:11:49 -0400992}
993
Al Viro7b4e4f72015-06-18 19:13:02 -0400994static void free_branch_tail(struct inode *inode, unsigned from, struct ufs_buffer_head *ubh, int depth)
Al Viro6d1ebbc2015-06-18 17:11:49 -0400995{
996 struct super_block *sb = inode->i_sb;
997 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
Al Viro6d1ebbc2015-06-18 17:11:49 -0400998 unsigned i;
999
Al Viro6d1ebbc2015-06-18 17:11:49 -04001000 if (--depth) {
Al Viro7b4e4f72015-06-18 19:13:02 -04001001 for (i = from; i < uspi->s_apb ; i++) {
Al Viro163073d2015-06-18 20:07:08 -04001002 void *p = ubh_get_data_ptr(uspi, ubh, i);
1003 u64 block = ufs_data_ptr_to_cpu(sb, p);
1004 if (block) {
1005 write_seqlock(&UFS_I(inode)->meta_lock);
1006 ufs_data_ptr_clear(uspi, p);
1007 write_sequnlock(&UFS_I(inode)->meta_lock);
1008 ubh_mark_buffer_dirty(ubh);
1009 free_full_branch(inode, block, depth);
1010 }
Al Viroa9657422015-06-18 16:13:56 -04001011 }
Al Viro9e0fbbd2015-06-18 15:33:47 -04001012 } else {
Al Viroa138b4b2015-06-18 02:18:54 -04001013 struct to_free ctx = {.inode = inode};
Al Viro9e0fbbd2015-06-18 15:33:47 -04001014
1015 for (i = from; i < uspi->s_apb; i++) {
Al Viro163073d2015-06-18 20:07:08 -04001016 void *p = ubh_get_data_ptr(uspi, ubh, i);
1017 u64 block = ufs_data_ptr_to_cpu(sb, p);
1018 if (block) {
1019 write_seqlock(&UFS_I(inode)->meta_lock);
1020 ufs_data_ptr_clear(uspi, p);
1021 write_sequnlock(&UFS_I(inode)->meta_lock);
1022 ubh_mark_buffer_dirty(ubh);
1023 free_data(&ctx, block, uspi->s_fpb);
Al Viro163073d2015-06-18 20:07:08 -04001024 }
Al Viro9e0fbbd2015-06-18 15:33:47 -04001025 }
Al Viroa138b4b2015-06-18 02:18:54 -04001026 free_data(&ctx, 0, 0);
Al Viro010d3312015-06-17 12:44:14 -04001027 }
Al Viro9e0fbbd2015-06-18 15:33:47 -04001028 if (IS_SYNC(inode) && ubh_buffer_dirty(ubh))
1029 ubh_sync_block(ubh);
1030 ubh_brelse(ubh);
Al Viro010d3312015-06-17 12:44:14 -04001031}
1032
1033static int ufs_alloc_lastblock(struct inode *inode, loff_t size)
1034{
1035 int err = 0;
1036 struct super_block *sb = inode->i_sb;
1037 struct address_space *mapping = inode->i_mapping;
1038 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
1039 unsigned i, end;
1040 sector_t lastfrag;
1041 struct page *lastpage;
1042 struct buffer_head *bh;
1043 u64 phys64;
1044
1045 lastfrag = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
1046
1047 if (!lastfrag)
1048 goto out;
1049
1050 lastfrag--;
1051
1052 lastpage = ufs_get_locked_page(mapping, lastfrag >>
1053 (PAGE_CACHE_SHIFT - inode->i_blkbits));
1054 if (IS_ERR(lastpage)) {
1055 err = -EIO;
1056 goto out;
1057 }
1058
1059 end = lastfrag & ((1 << (PAGE_CACHE_SHIFT - inode->i_blkbits)) - 1);
1060 bh = page_buffers(lastpage);
1061 for (i = 0; i < end; ++i)
1062 bh = bh->b_this_page;
1063
1064
1065 err = ufs_getfrag_block(inode, lastfrag, bh, 1);
1066
1067 if (unlikely(err))
1068 goto out_unlock;
1069
1070 if (buffer_new(bh)) {
1071 clear_buffer_new(bh);
1072 unmap_underlying_metadata(bh->b_bdev,
1073 bh->b_blocknr);
1074 /*
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);
1187 inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
1188 mark_inode_dirty(inode);
1189out:
1190 UFSD("EXIT: err %d\n", err);
1191 return err;
1192}
1193
1194void ufs_truncate_blocks(struct inode *inode)
1195{
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
1210 error = inode_change_ok(inode, attr);
1211 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};