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Diffstat (limited to 'fs/bfs/inode.c')
-rw-r--r--fs/bfs/inode.c127
1 files changed, 64 insertions, 63 deletions
diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index 7bd9c2bbe6ee..294c41baef6e 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -30,25 +30,26 @@ MODULE_LICENSE("GPL");
30#define dprintf(x...) 30#define dprintf(x...)
31#endif 31#endif
32 32
33void dump_imap(const char *prefix, struct super_block * s); 33void dump_imap(const char *prefix, struct super_block *s);
34 34
35static void bfs_read_inode(struct inode * inode) 35static void bfs_read_inode(struct inode *inode)
36{ 36{
37 unsigned long ino = inode->i_ino; 37 unsigned long ino = inode->i_ino;
38 struct bfs_inode * di; 38 struct bfs_inode *di;
39 struct buffer_head * bh; 39 struct buffer_head *bh;
40 int block, off; 40 int block, off;
41 41
42 if (ino < BFS_ROOT_INO || ino > BFS_SB(inode->i_sb)->si_lasti) { 42 if ((ino < BFS_ROOT_INO) || (ino > BFS_SB(inode->i_sb)->si_lasti)) {
43 printf("Bad inode number %s:%08lx\n", inode->i_sb->s_id, ino); 43 printf("Bad inode number %s:%08lx\n", inode->i_sb->s_id, ino);
44 make_bad_inode(inode); 44 make_bad_inode(inode);
45 return; 45 return;
46 } 46 }
47 47
48 block = (ino - BFS_ROOT_INO)/BFS_INODES_PER_BLOCK + 1; 48 block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
49 bh = sb_bread(inode->i_sb, block); 49 bh = sb_bread(inode->i_sb, block);
50 if (!bh) { 50 if (!bh) {
51 printf("Unable to read inode %s:%08lx\n", inode->i_sb->s_id, ino); 51 printf("Unable to read inode %s:%08lx\n", inode->i_sb->s_id,
52 ino);
52 make_bad_inode(inode); 53 make_bad_inode(inode);
53 return; 54 return;
54 } 55 }
@@ -56,7 +57,7 @@ static void bfs_read_inode(struct inode * inode)
56 off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK; 57 off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
57 di = (struct bfs_inode *)bh->b_data + off; 58 di = (struct bfs_inode *)bh->b_data + off;
58 59
59 inode->i_mode = 0x0000FFFF & le32_to_cpu(di->i_mode); 60 inode->i_mode = 0x0000FFFF & le32_to_cpu(di->i_mode);
60 if (le32_to_cpu(di->i_vtype) == BFS_VDIR) { 61 if (le32_to_cpu(di->i_vtype) == BFS_VDIR) {
61 inode->i_mode |= S_IFDIR; 62 inode->i_mode |= S_IFDIR;
62 inode->i_op = &bfs_dir_inops; 63 inode->i_op = &bfs_dir_inops;
@@ -70,48 +71,48 @@ static void bfs_read_inode(struct inode * inode)
70 71
71 BFS_I(inode)->i_sblock = le32_to_cpu(di->i_sblock); 72 BFS_I(inode)->i_sblock = le32_to_cpu(di->i_sblock);
72 BFS_I(inode)->i_eblock = le32_to_cpu(di->i_eblock); 73 BFS_I(inode)->i_eblock = le32_to_cpu(di->i_eblock);
74 BFS_I(inode)->i_dsk_ino = le16_to_cpu(di->i_ino);
73 inode->i_uid = le32_to_cpu(di->i_uid); 75 inode->i_uid = le32_to_cpu(di->i_uid);
74 inode->i_gid = le32_to_cpu(di->i_gid); 76 inode->i_gid = le32_to_cpu(di->i_gid);
75 inode->i_nlink = le32_to_cpu(di->i_nlink); 77 inode->i_nlink = le32_to_cpu(di->i_nlink);
76 inode->i_size = BFS_FILESIZE(di); 78 inode->i_size = BFS_FILESIZE(di);
77 inode->i_blocks = BFS_FILEBLOCKS(di); 79 inode->i_blocks = BFS_FILEBLOCKS(di);
78 if (inode->i_size || inode->i_blocks) dprintf("Registered inode with %lld size, %ld blocks\n", inode->i_size, inode->i_blocks);
79 inode->i_atime.tv_sec = le32_to_cpu(di->i_atime); 80 inode->i_atime.tv_sec = le32_to_cpu(di->i_atime);
80 inode->i_mtime.tv_sec = le32_to_cpu(di->i_mtime); 81 inode->i_mtime.tv_sec = le32_to_cpu(di->i_mtime);
81 inode->i_ctime.tv_sec = le32_to_cpu(di->i_ctime); 82 inode->i_ctime.tv_sec = le32_to_cpu(di->i_ctime);
82 inode->i_atime.tv_nsec = 0; 83 inode->i_atime.tv_nsec = 0;
83 inode->i_mtime.tv_nsec = 0; 84 inode->i_mtime.tv_nsec = 0;
84 inode->i_ctime.tv_nsec = 0; 85 inode->i_ctime.tv_nsec = 0;
85 BFS_I(inode)->i_dsk_ino = le16_to_cpu(di->i_ino); /* can be 0 so we store a copy */
86 86
87 brelse(bh); 87 brelse(bh);
88} 88}
89 89
90static int bfs_write_inode(struct inode * inode, int unused) 90static int bfs_write_inode(struct inode *inode, int unused)
91{ 91{
92 unsigned int ino = (u16)inode->i_ino; 92 unsigned int ino = (u16)inode->i_ino;
93 unsigned long i_sblock; 93 unsigned long i_sblock;
94 struct bfs_inode * di; 94 struct bfs_inode *di;
95 struct buffer_head * bh; 95 struct buffer_head *bh;
96 int block, off; 96 int block, off;
97 97
98 dprintf("ino=%08x\n", ino); 98 dprintf("ino=%08x\n", ino);
99 99
100 if (ino < BFS_ROOT_INO || ino > BFS_SB(inode->i_sb)->si_lasti) { 100 if ((ino < BFS_ROOT_INO) || (ino > BFS_SB(inode->i_sb)->si_lasti)) {
101 printf("Bad inode number %s:%08x\n", inode->i_sb->s_id, ino); 101 printf("Bad inode number %s:%08x\n", inode->i_sb->s_id, ino);
102 return -EIO; 102 return -EIO;
103 } 103 }
104 104
105 lock_kernel(); 105 lock_kernel();
106 block = (ino - BFS_ROOT_INO)/BFS_INODES_PER_BLOCK + 1; 106 block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
107 bh = sb_bread(inode->i_sb, block); 107 bh = sb_bread(inode->i_sb, block);
108 if (!bh) { 108 if (!bh) {
109 printf("Unable to read inode %s:%08x\n", inode->i_sb->s_id, ino); 109 printf("Unable to read inode %s:%08x\n",
110 inode->i_sb->s_id, ino);
110 unlock_kernel(); 111 unlock_kernel();
111 return -EIO; 112 return -EIO;
112 } 113 }
113 114
114 off = (ino - BFS_ROOT_INO)%BFS_INODES_PER_BLOCK; 115 off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
115 di = (struct bfs_inode *)bh->b_data + off; 116 di = (struct bfs_inode *)bh->b_data + off;
116 117
117 if (ino == BFS_ROOT_INO) 118 if (ino == BFS_ROOT_INO)
@@ -133,27 +134,26 @@ static int bfs_write_inode(struct inode * inode, int unused)
133 di->i_eoffset = cpu_to_le32(i_sblock * BFS_BSIZE + inode->i_size - 1); 134 di->i_eoffset = cpu_to_le32(i_sblock * BFS_BSIZE + inode->i_size - 1);
134 135
135 mark_buffer_dirty(bh); 136 mark_buffer_dirty(bh);
136 dprintf("Written ino=%d into %d:%d\n",le16_to_cpu(di->i_ino),block,off);
137 brelse(bh); 137 brelse(bh);
138 unlock_kernel(); 138 unlock_kernel();
139 return 0; 139 return 0;
140} 140}
141 141
142static void bfs_delete_inode(struct inode * inode) 142static void bfs_delete_inode(struct inode *inode)
143{ 143{
144 unsigned long ino = inode->i_ino; 144 unsigned long ino = inode->i_ino;
145 struct bfs_inode * di; 145 struct bfs_inode *di;
146 struct buffer_head * bh; 146 struct buffer_head *bh;
147 int block, off; 147 int block, off;
148 struct super_block * s = inode->i_sb; 148 struct super_block *s = inode->i_sb;
149 struct bfs_sb_info * info = BFS_SB(s); 149 struct bfs_sb_info *info = BFS_SB(s);
150 struct bfs_inode_info * bi = BFS_I(inode); 150 struct bfs_inode_info *bi = BFS_I(inode);
151 151
152 dprintf("ino=%08lx\n", ino); 152 dprintf("ino=%08lx\n", ino);
153 153
154 truncate_inode_pages(&inode->i_data, 0); 154 truncate_inode_pages(&inode->i_data, 0);
155 155
156 if (ino < BFS_ROOT_INO || ino > info->si_lasti) { 156 if ((ino < BFS_ROOT_INO) || (ino > info->si_lasti)) {
157 printf("invalid ino=%08lx\n", ino); 157 printf("invalid ino=%08lx\n", ino);
158 return; 158 return;
159 } 159 }
@@ -162,31 +162,35 @@ static void bfs_delete_inode(struct inode * inode)
162 inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC; 162 inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
163 lock_kernel(); 163 lock_kernel();
164 mark_inode_dirty(inode); 164 mark_inode_dirty(inode);
165 block = (ino - BFS_ROOT_INO)/BFS_INODES_PER_BLOCK + 1; 165
166 block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
166 bh = sb_bread(s, block); 167 bh = sb_bread(s, block);
167 if (!bh) { 168 if (!bh) {
168 printf("Unable to read inode %s:%08lx\n", inode->i_sb->s_id, ino); 169 printf("Unable to read inode %s:%08lx\n",
170 inode->i_sb->s_id, ino);
169 unlock_kernel(); 171 unlock_kernel();
170 return; 172 return;
171 } 173 }
172 off = (ino - BFS_ROOT_INO)%BFS_INODES_PER_BLOCK; 174 off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
173 di = (struct bfs_inode *) bh->b_data + off; 175 di = (struct bfs_inode *)bh->b_data + off;
176 memset((void *)di, 0, sizeof(struct bfs_inode));
177 mark_buffer_dirty(bh);
178 brelse(bh);
179
174 if (bi->i_dsk_ino) { 180 if (bi->i_dsk_ino) {
175 info->si_freeb += 1 + bi->i_eblock - bi->i_sblock; 181 info->si_freeb += BFS_FILEBLOCKS(bi);
176 info->si_freei++; 182 info->si_freei++;
177 clear_bit(ino, info->si_imap); 183 clear_bit(ino, info->si_imap);
178 dump_imap("delete_inode", s); 184 dump_imap("delete_inode", s);
179 } 185 }
180 di->i_ino = 0;
181 di->i_sblock = 0;
182 mark_buffer_dirty(bh);
183 brelse(bh);
184 186
185 /* if this was the last file, make the previous 187 /*
186 block "last files last block" even if there is no real file there, 188 * If this was the last file, make the previous block
187 saves us 1 gap */ 189 * "last block of the last file" even if there is no
188 if (info->si_lf_eblk == BFS_I(inode)->i_eblock) { 190 * real file there, saves us 1 gap.
189 info->si_lf_eblk = BFS_I(inode)->i_sblock - 1; 191 */
192 if (info->si_lf_eblk == bi->i_eblock) {
193 info->si_lf_eblk = bi->i_sblock - 1;
190 mark_buffer_dirty(info->si_sbh); 194 mark_buffer_dirty(info->si_sbh);
191 } 195 }
192 unlock_kernel(); 196 unlock_kernel();
@@ -228,7 +232,7 @@ static void bfs_write_super(struct super_block *s)
228 unlock_kernel(); 232 unlock_kernel();
229} 233}
230 234
231static struct kmem_cache * bfs_inode_cachep; 235static struct kmem_cache *bfs_inode_cachep;
232 236
233static struct inode *bfs_alloc_inode(struct super_block *sb) 237static struct inode *bfs_alloc_inode(struct super_block *sb)
234{ 238{
@@ -279,7 +283,7 @@ static const struct super_operations bfs_sops = {
279 .statfs = bfs_statfs, 283 .statfs = bfs_statfs,
280}; 284};
281 285
282void dump_imap(const char *prefix, struct super_block * s) 286void dump_imap(const char *prefix, struct super_block *s)
283{ 287{
284#ifdef DEBUG 288#ifdef DEBUG
285 int i; 289 int i;
@@ -287,25 +291,26 @@ void dump_imap(const char *prefix, struct super_block * s)
287 291
288 if (!tmpbuf) 292 if (!tmpbuf)
289 return; 293 return;
290 for (i=BFS_SB(s)->si_lasti; i>=0; i--) { 294 for (i = BFS_SB(s)->si_lasti; i >= 0; i--) {
291 if (i > PAGE_SIZE-100) break; 295 if (i > PAGE_SIZE - 100) break;
292 if (test_bit(i, BFS_SB(s)->si_imap)) 296 if (test_bit(i, BFS_SB(s)->si_imap))
293 strcat(tmpbuf, "1"); 297 strcat(tmpbuf, "1");
294 else 298 else
295 strcat(tmpbuf, "0"); 299 strcat(tmpbuf, "0");
296 } 300 }
297 printk(KERN_ERR "BFS-fs: %s: lasti=%08lx <%s>\n", prefix, BFS_SB(s)->si_lasti, tmpbuf); 301 printf("BFS-fs: %s: lasti=%08lx <%s>\n",
302 prefix, BFS_SB(s)->si_lasti, tmpbuf);
298 free_page((unsigned long)tmpbuf); 303 free_page((unsigned long)tmpbuf);
299#endif 304#endif
300} 305}
301 306
302static int bfs_fill_super(struct super_block *s, void *data, int silent) 307static int bfs_fill_super(struct super_block *s, void *data, int silent)
303{ 308{
304 struct buffer_head * bh; 309 struct buffer_head *bh;
305 struct bfs_super_block * bfs_sb; 310 struct bfs_super_block *bfs_sb;
306 struct inode * inode; 311 struct inode *inode;
307 unsigned i, imap_len; 312 unsigned i, imap_len;
308 struct bfs_sb_info * info; 313 struct bfs_sb_info *info;
309 314
310 info = kzalloc(sizeof(*info), GFP_KERNEL); 315 info = kzalloc(sizeof(*info), GFP_KERNEL);
311 if (!info) 316 if (!info)
@@ -329,14 +334,14 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
329 334
330 s->s_magic = BFS_MAGIC; 335 s->s_magic = BFS_MAGIC;
331 info->si_sbh = bh; 336 info->si_sbh = bh;
332 info->si_lasti = (le32_to_cpu(bfs_sb->s_start) - BFS_BSIZE)/sizeof(struct bfs_inode) 337 info->si_lasti = (le32_to_cpu(bfs_sb->s_start) - BFS_BSIZE) /
333 + BFS_ROOT_INO - 1; 338 sizeof(struct bfs_inode)
334 339 + BFS_ROOT_INO - 1;
335 imap_len = info->si_lasti/8 + 1; 340 imap_len = (info->si_lasti / 8) + 1;
336 info->si_imap = kzalloc(imap_len, GFP_KERNEL); 341 info->si_imap = kzalloc(imap_len, GFP_KERNEL);
337 if (!info->si_imap) 342 if (!info->si_imap)
338 goto out; 343 goto out;
339 for (i=0; i<BFS_ROOT_INO; i++) 344 for (i = 0; i < BFS_ROOT_INO; i++)
340 set_bit(i, info->si_imap); 345 set_bit(i, info->si_imap);
341 346
342 s->s_op = &bfs_sops; 347 s->s_op = &bfs_sops;
@@ -352,16 +357,15 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
352 goto out; 357 goto out;
353 } 358 }
354 359
355 info->si_blocks = (le32_to_cpu(bfs_sb->s_end) + 1)>>BFS_BSIZE_BITS; /* for statfs(2) */ 360 info->si_blocks = (le32_to_cpu(bfs_sb->s_end) + 1) >> BFS_BSIZE_BITS;
356 info->si_freeb = (le32_to_cpu(bfs_sb->s_end) + 1 - le32_to_cpu(bfs_sb->s_start))>>BFS_BSIZE_BITS; 361 info->si_freeb = (le32_to_cpu(bfs_sb->s_end) + 1
362 - le32_to_cpu(bfs_sb->s_start)) >> BFS_BSIZE_BITS;
357 info->si_freei = 0; 363 info->si_freei = 0;
358 info->si_lf_eblk = 0; 364 info->si_lf_eblk = 0;
359 info->si_lf_sblk = 0;
360 info->si_lf_ioff = 0;
361 bh = NULL; 365 bh = NULL;
362 for (i=BFS_ROOT_INO; i<=info->si_lasti; i++) { 366 for (i = BFS_ROOT_INO; i <= info->si_lasti; i++) {
363 struct bfs_inode *di; 367 struct bfs_inode *di;
364 int block = (i - BFS_ROOT_INO)/BFS_INODES_PER_BLOCK + 1; 368 int block = (i - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
365 int off = (i - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK; 369 int off = (i - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
366 unsigned long sblock, eblock; 370 unsigned long sblock, eblock;
367 371
@@ -384,11 +388,8 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
384 388
385 sblock = le32_to_cpu(di->i_sblock); 389 sblock = le32_to_cpu(di->i_sblock);
386 eblock = le32_to_cpu(di->i_eblock); 390 eblock = le32_to_cpu(di->i_eblock);
387 if (eblock > info->si_lf_eblk) { 391 if (eblock > info->si_lf_eblk)
388 info->si_lf_eblk = eblock; 392 info->si_lf_eblk = eblock;
389 info->si_lf_sblk = sblock;
390 info->si_lf_ioff = BFS_INO2OFF(i);
391 }
392 } 393 }
393 brelse(bh); 394 brelse(bh);
394 if (!(s->s_flags & MS_RDONLY)) { 395 if (!(s->s_flags & MS_RDONLY)) {