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-rw-r--r--fs/reiserfs/namei.c2574
1 files changed, 1330 insertions, 1244 deletions
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
index 4a333255f27a..a20bbc1642dc 100644
--- a/fs/reiserfs/namei.c
+++ b/fs/reiserfs/namei.c
@@ -25,86 +25,85 @@
25 25
26// directory item contains array of entry headers. This performs 26// directory item contains array of entry headers. This performs
27// binary search through that array 27// binary search through that array
28static int bin_search_in_dir_item (struct reiserfs_dir_entry * de, loff_t off) 28static int bin_search_in_dir_item(struct reiserfs_dir_entry *de, loff_t off)
29{ 29{
30 struct item_head * ih = de->de_ih; 30 struct item_head *ih = de->de_ih;
31 struct reiserfs_de_head * deh = de->de_deh; 31 struct reiserfs_de_head *deh = de->de_deh;
32 int rbound, lbound, j; 32 int rbound, lbound, j;
33 33
34 lbound = 0; 34 lbound = 0;
35 rbound = I_ENTRY_COUNT (ih) - 1; 35 rbound = I_ENTRY_COUNT(ih) - 1;
36 36
37 for (j = (rbound + lbound) / 2; lbound <= rbound; j = (rbound + lbound) / 2) { 37 for (j = (rbound + lbound) / 2; lbound <= rbound;
38 if (off < deh_offset (deh + j)) { 38 j = (rbound + lbound) / 2) {
39 rbound = j - 1; 39 if (off < deh_offset(deh + j)) {
40 continue; 40 rbound = j - 1;
41 continue;
42 }
43 if (off > deh_offset(deh + j)) {
44 lbound = j + 1;
45 continue;
46 }
47 // this is not name found, but matched third key component
48 de->de_entry_num = j;
49 return NAME_FOUND;
41 } 50 }
42 if (off > deh_offset (deh + j)) {
43 lbound = j + 1;
44 continue;
45 }
46 // this is not name found, but matched third key component
47 de->de_entry_num = j;
48 return NAME_FOUND;
49 }
50 51
51 de->de_entry_num = lbound; 52 de->de_entry_num = lbound;
52 return NAME_NOT_FOUND; 53 return NAME_NOT_FOUND;
53} 54}
54 55
55
56// comment? maybe something like set de to point to what the path points to? 56// comment? maybe something like set de to point to what the path points to?
57static inline void set_de_item_location (struct reiserfs_dir_entry * de, struct path * path) 57static inline void set_de_item_location(struct reiserfs_dir_entry *de,
58 struct path *path)
58{ 59{
59 de->de_bh = get_last_bh (path); 60 de->de_bh = get_last_bh(path);
60 de->de_ih = get_ih (path); 61 de->de_ih = get_ih(path);
61 de->de_deh = B_I_DEH (de->de_bh, de->de_ih); 62 de->de_deh = B_I_DEH(de->de_bh, de->de_ih);
62 de->de_item_num = PATH_LAST_POSITION (path); 63 de->de_item_num = PATH_LAST_POSITION(path);
63} 64}
64
65 65
66// de_bh, de_ih, de_deh (points to first element of array), de_item_num is set 66// de_bh, de_ih, de_deh (points to first element of array), de_item_num is set
67inline void set_de_name_and_namelen (struct reiserfs_dir_entry * de) 67inline void set_de_name_and_namelen(struct reiserfs_dir_entry *de)
68{ 68{
69 struct reiserfs_de_head * deh = de->de_deh + de->de_entry_num; 69 struct reiserfs_de_head *deh = de->de_deh + de->de_entry_num;
70 70
71 if (de->de_entry_num >= ih_entry_count (de->de_ih)) 71 if (de->de_entry_num >= ih_entry_count(de->de_ih))
72 BUG (); 72 BUG();
73 73
74 de->de_entrylen = entry_length (de->de_bh, de->de_ih, de->de_entry_num); 74 de->de_entrylen = entry_length(de->de_bh, de->de_ih, de->de_entry_num);
75 de->de_namelen = de->de_entrylen - (de_with_sd (deh) ? SD_SIZE : 0); 75 de->de_namelen = de->de_entrylen - (de_with_sd(deh) ? SD_SIZE : 0);
76 de->de_name = B_I_PITEM (de->de_bh, de->de_ih) + deh_location(deh); 76 de->de_name = B_I_PITEM(de->de_bh, de->de_ih) + deh_location(deh);
77 if (de->de_name[de->de_namelen - 1] == 0) 77 if (de->de_name[de->de_namelen - 1] == 0)
78 de->de_namelen = strlen (de->de_name); 78 de->de_namelen = strlen(de->de_name);
79} 79}
80 80
81
82// what entry points to 81// what entry points to
83static inline void set_de_object_key (struct reiserfs_dir_entry * de) 82static inline void set_de_object_key(struct reiserfs_dir_entry *de)
84{ 83{
85 if (de->de_entry_num >= ih_entry_count (de->de_ih)) 84 if (de->de_entry_num >= ih_entry_count(de->de_ih))
86 BUG (); 85 BUG();
87 de->de_dir_id = deh_dir_id( &(de->de_deh[de->de_entry_num])); 86 de->de_dir_id = deh_dir_id(&(de->de_deh[de->de_entry_num]));
88 de->de_objectid = deh_objectid( &(de->de_deh[de->de_entry_num])); 87 de->de_objectid = deh_objectid(&(de->de_deh[de->de_entry_num]));
89} 88}
90 89
91 90static inline void store_de_entry_key(struct reiserfs_dir_entry *de)
92static inline void store_de_entry_key (struct reiserfs_dir_entry * de)
93{ 91{
94 struct reiserfs_de_head * deh = de->de_deh + de->de_entry_num; 92 struct reiserfs_de_head *deh = de->de_deh + de->de_entry_num;
95 93
96 if (de->de_entry_num >= ih_entry_count (de->de_ih)) 94 if (de->de_entry_num >= ih_entry_count(de->de_ih))
97 BUG (); 95 BUG();
98 96
99 /* store key of the found entry */ 97 /* store key of the found entry */
100 de->de_entry_key.version = KEY_FORMAT_3_5; 98 de->de_entry_key.version = KEY_FORMAT_3_5;
101 de->de_entry_key.on_disk_key.k_dir_id = le32_to_cpu (de->de_ih->ih_key.k_dir_id); 99 de->de_entry_key.on_disk_key.k_dir_id =
102 de->de_entry_key.on_disk_key.k_objectid = le32_to_cpu (de->de_ih->ih_key.k_objectid); 100 le32_to_cpu(de->de_ih->ih_key.k_dir_id);
103 set_cpu_key_k_offset (&(de->de_entry_key), deh_offset (deh)); 101 de->de_entry_key.on_disk_key.k_objectid =
104 set_cpu_key_k_type (&(de->de_entry_key), TYPE_DIRENTRY); 102 le32_to_cpu(de->de_ih->ih_key.k_objectid);
103 set_cpu_key_k_offset(&(de->de_entry_key), deh_offset(deh));
104 set_cpu_key_k_type(&(de->de_entry_key), TYPE_DIRENTRY);
105} 105}
106 106
107
108/* We assign a key to each directory item, and place multiple entries 107/* We assign a key to each directory item, and place multiple entries
109in a single directory item. A directory item has a key equal to the 108in a single directory item. A directory item has a key equal to the
110key of the first directory entry in it. 109key of the first directory entry in it.
@@ -117,58 +116,60 @@ entry position in the item
117*/ 116*/
118 117
119/* The function is NOT SCHEDULE-SAFE! */ 118/* The function is NOT SCHEDULE-SAFE! */
120int search_by_entry_key (struct super_block * sb, const struct cpu_key * key, 119int search_by_entry_key(struct super_block *sb, const struct cpu_key *key,
121 struct path * path, struct reiserfs_dir_entry * de) 120 struct path *path, struct reiserfs_dir_entry *de)
122{ 121{
123 int retval; 122 int retval;
124 123
125 retval = search_item (sb, key, path); 124 retval = search_item(sb, key, path);
126 switch (retval) { 125 switch (retval) {
127 case ITEM_NOT_FOUND: 126 case ITEM_NOT_FOUND:
128 if (!PATH_LAST_POSITION (path)) { 127 if (!PATH_LAST_POSITION(path)) {
129 reiserfs_warning (sb, "vs-7000: search_by_entry_key: search_by_key returned item position == 0"); 128 reiserfs_warning(sb,
130 pathrelse(path) ; 129 "vs-7000: search_by_entry_key: search_by_key returned item position == 0");
131 return IO_ERROR ; 130 pathrelse(path);
131 return IO_ERROR;
132 }
133 PATH_LAST_POSITION(path)--;
134
135 case ITEM_FOUND:
136 break;
137
138 case IO_ERROR:
139 return retval;
140
141 default:
142 pathrelse(path);
143 reiserfs_warning(sb,
144 "vs-7002: search_by_entry_key: no path to here");
145 return IO_ERROR;
132 } 146 }
133 PATH_LAST_POSITION (path) --;
134
135 case ITEM_FOUND:
136 break;
137
138 case IO_ERROR:
139 return retval;
140 147
141 default: 148 set_de_item_location(de, path);
142 pathrelse (path);
143 reiserfs_warning (sb, "vs-7002: search_by_entry_key: no path to here");
144 return IO_ERROR;
145 }
146
147 set_de_item_location (de, path);
148 149
149#ifdef CONFIG_REISERFS_CHECK 150#ifdef CONFIG_REISERFS_CHECK
150 if (!is_direntry_le_ih (de->de_ih) || 151 if (!is_direntry_le_ih(de->de_ih) ||
151 COMP_SHORT_KEYS (&(de->de_ih->ih_key), key)) { 152 COMP_SHORT_KEYS(&(de->de_ih->ih_key), key)) {
152 print_block (de->de_bh, 0, -1, -1); 153 print_block(de->de_bh, 0, -1, -1);
153 reiserfs_panic (sb, "vs-7005: search_by_entry_key: found item %h is not directory item or " 154 reiserfs_panic(sb,
154 "does not belong to the same directory as key %K", de->de_ih, key); 155 "vs-7005: search_by_entry_key: found item %h is not directory item or "
155 } 156 "does not belong to the same directory as key %K",
156#endif /* CONFIG_REISERFS_CHECK */ 157 de->de_ih, key);
157 158 }
158 /* binary search in directory item by third componen t of the 159#endif /* CONFIG_REISERFS_CHECK */
159 key. sets de->de_entry_num of de */ 160
160 retval = bin_search_in_dir_item (de, cpu_key_k_offset (key)); 161 /* binary search in directory item by third componen t of the
161 path->pos_in_item = de->de_entry_num; 162 key. sets de->de_entry_num of de */
162 if (retval != NAME_NOT_FOUND) { 163 retval = bin_search_in_dir_item(de, cpu_key_k_offset(key));
163 // ugly, but rename needs de_bh, de_deh, de_name, de_namelen, de_objectid set 164 path->pos_in_item = de->de_entry_num;
164 set_de_name_and_namelen (de); 165 if (retval != NAME_NOT_FOUND) {
165 set_de_object_key (de); 166 // ugly, but rename needs de_bh, de_deh, de_name, de_namelen, de_objectid set
166 } 167 set_de_name_and_namelen(de);
167 return retval; 168 set_de_object_key(de);
169 }
170 return retval;
168} 171}
169 172
170
171
172/* Keyed 32-bit hash function using TEA in a Davis-Meyer function */ 173/* Keyed 32-bit hash function using TEA in a Davis-Meyer function */
173 174
174/* The third component is hashed, and you can choose from more than 175/* The third component is hashed, and you can choose from more than
@@ -176,197 +177,210 @@ int search_by_entry_key (struct super_block * sb, const struct cpu_key * key,
176 but are thought about. This function should be moved to hashes.c 177 but are thought about. This function should be moved to hashes.c
177 Jedi, please do so. -Hans */ 178 Jedi, please do so. -Hans */
178 179
179static __u32 get_third_component (struct super_block * s, 180static __u32 get_third_component(struct super_block *s,
180 const char * name, int len) 181 const char *name, int len)
181{ 182{
182 __u32 res; 183 __u32 res;
183 184
184 if (!len || (len == 1 && name[0] == '.')) 185 if (!len || (len == 1 && name[0] == '.'))
185 return DOT_OFFSET; 186 return DOT_OFFSET;
186 if (len == 2 && name[0] == '.' && name[1] == '.') 187 if (len == 2 && name[0] == '.' && name[1] == '.')
187 return DOT_DOT_OFFSET; 188 return DOT_DOT_OFFSET;
188 189
189 res = REISERFS_SB(s)->s_hash_function (name, len); 190 res = REISERFS_SB(s)->s_hash_function(name, len);
190 191
191 // take bits from 7-th to 30-th including both bounds 192 // take bits from 7-th to 30-th including both bounds
192 res = GET_HASH_VALUE(res); 193 res = GET_HASH_VALUE(res);
193 if (res == 0) 194 if (res == 0)
194 // needed to have no names before "." and ".." those have hash 195 // needed to have no names before "." and ".." those have hash
195 // value == 0 and generation conters 1 and 2 accordingly 196 // value == 0 and generation conters 1 and 2 accordingly
196 res = 128; 197 res = 128;
197 return res + MAX_GENERATION_NUMBER; 198 return res + MAX_GENERATION_NUMBER;
198} 199}
199 200
200 201static int reiserfs_match(struct reiserfs_dir_entry *de,
201static int reiserfs_match (struct reiserfs_dir_entry * de, 202 const char *name, int namelen)
202 const char * name, int namelen)
203{ 203{
204 int retval = NAME_NOT_FOUND; 204 int retval = NAME_NOT_FOUND;
205 205
206 if ((namelen == de->de_namelen) && 206 if ((namelen == de->de_namelen) &&
207 !memcmp(de->de_name, name, de->de_namelen)) 207 !memcmp(de->de_name, name, de->de_namelen))
208 retval = (de_visible (de->de_deh + de->de_entry_num) ? NAME_FOUND : NAME_FOUND_INVISIBLE); 208 retval =
209 (de_visible(de->de_deh + de->de_entry_num) ? NAME_FOUND :
210 NAME_FOUND_INVISIBLE);
209 211
210 return retval; 212 return retval;
211} 213}
212 214
213
214/* de's de_bh, de_ih, de_deh, de_item_num, de_entry_num are set already */ 215/* de's de_bh, de_ih, de_deh, de_item_num, de_entry_num are set already */
215 216
216 /* used when hash collisions exist */ 217 /* used when hash collisions exist */
217 218
218 219static int linear_search_in_dir_item(struct cpu_key *key,
219static int linear_search_in_dir_item (struct cpu_key * key, struct reiserfs_dir_entry * de, 220 struct reiserfs_dir_entry *de,
220 const char * name, int namelen) 221 const char *name, int namelen)
221{ 222{
222 struct reiserfs_de_head * deh = de->de_deh; 223 struct reiserfs_de_head *deh = de->de_deh;
223 int retval; 224 int retval;
224 int i; 225 int i;
225 226
226 i = de->de_entry_num; 227 i = de->de_entry_num;
227 228
228 if (i == I_ENTRY_COUNT (de->de_ih) || 229 if (i == I_ENTRY_COUNT(de->de_ih) ||
229 GET_HASH_VALUE (deh_offset (deh + i)) != GET_HASH_VALUE (cpu_key_k_offset (key))) { 230 GET_HASH_VALUE(deh_offset(deh + i)) !=
230 i --; 231 GET_HASH_VALUE(cpu_key_k_offset(key))) {
231 } 232 i--;
233 }
232 234
233 RFALSE( de->de_deh != B_I_DEH (de->de_bh, de->de_ih), 235 RFALSE(de->de_deh != B_I_DEH(de->de_bh, de->de_ih),
234 "vs-7010: array of entry headers not found"); 236 "vs-7010: array of entry headers not found");
235 237
236 deh += i; 238 deh += i;
237 239
238 for (; i >= 0; i --, deh --) { 240 for (; i >= 0; i--, deh--) {
239 if (GET_HASH_VALUE (deh_offset (deh)) != 241 if (GET_HASH_VALUE(deh_offset(deh)) !=
240 GET_HASH_VALUE (cpu_key_k_offset (key))) { 242 GET_HASH_VALUE(cpu_key_k_offset(key))) {
241 // hash value does not match, no need to check whole name 243 // hash value does not match, no need to check whole name
242 return NAME_NOT_FOUND; 244 return NAME_NOT_FOUND;
243 } 245 }
244 246
245 /* mark, that this generation number is used */ 247 /* mark, that this generation number is used */
246 if (de->de_gen_number_bit_string) 248 if (de->de_gen_number_bit_string)
247 set_bit (GET_GENERATION_NUMBER (deh_offset (deh)), (unsigned long *)de->de_gen_number_bit_string); 249 set_bit(GET_GENERATION_NUMBER(deh_offset(deh)),
250 (unsigned long *)de->de_gen_number_bit_string);
248 251
249 // calculate pointer to name and namelen 252 // calculate pointer to name and namelen
250 de->de_entry_num = i; 253 de->de_entry_num = i;
251 set_de_name_and_namelen (de); 254 set_de_name_and_namelen(de);
252 255
253 if ((retval = reiserfs_match (de, name, namelen)) != NAME_NOT_FOUND) { 256 if ((retval =
254 // de's de_name, de_namelen, de_recordlen are set. Fill the rest: 257 reiserfs_match(de, name, namelen)) != NAME_NOT_FOUND) {
258 // de's de_name, de_namelen, de_recordlen are set. Fill the rest:
255 259
256 // key of pointed object 260 // key of pointed object
257 set_de_object_key (de); 261 set_de_object_key(de);
258 262
259 store_de_entry_key (de); 263 store_de_entry_key(de);
260 264
261 // retval can be NAME_FOUND or NAME_FOUND_INVISIBLE 265 // retval can be NAME_FOUND or NAME_FOUND_INVISIBLE
262 return retval; 266 return retval;
267 }
263 } 268 }
264 }
265
266 if (GET_GENERATION_NUMBER (le_ih_k_offset (de->de_ih)) == 0)
267 /* we have reached left most entry in the node. In common we
268 have to go to the left neighbor, but if generation counter
269 is 0 already, we know for sure, that there is no name with
270 the same hash value */
271 // FIXME: this work correctly only because hash value can not
272 // be 0. Btw, in case of Yura's hash it is probably possible,
273 // so, this is a bug
274 return NAME_NOT_FOUND;
275 269
276 RFALSE( de->de_item_num, 270 if (GET_GENERATION_NUMBER(le_ih_k_offset(de->de_ih)) == 0)
277 "vs-7015: two diritems of the same directory in one node?"); 271 /* we have reached left most entry in the node. In common we
272 have to go to the left neighbor, but if generation counter
273 is 0 already, we know for sure, that there is no name with
274 the same hash value */
275 // FIXME: this work correctly only because hash value can not
276 // be 0. Btw, in case of Yura's hash it is probably possible,
277 // so, this is a bug
278 return NAME_NOT_FOUND;
278 279
279 return GOTO_PREVIOUS_ITEM; 280 RFALSE(de->de_item_num,
280} 281 "vs-7015: two diritems of the same directory in one node?");
281 282
283 return GOTO_PREVIOUS_ITEM;
284}
282 285
283// may return NAME_FOUND, NAME_FOUND_INVISIBLE, NAME_NOT_FOUND 286// may return NAME_FOUND, NAME_FOUND_INVISIBLE, NAME_NOT_FOUND
284// FIXME: should add something like IOERROR 287// FIXME: should add something like IOERROR
285static int reiserfs_find_entry (struct inode * dir, const char * name, int namelen, 288static int reiserfs_find_entry(struct inode *dir, const char *name, int namelen,
286 struct path * path_to_entry, struct reiserfs_dir_entry * de) 289 struct path *path_to_entry,
290 struct reiserfs_dir_entry *de)
287{ 291{
288 struct cpu_key key_to_search; 292 struct cpu_key key_to_search;
289 int retval; 293 int retval;
290 294
291 295 if (namelen > REISERFS_MAX_NAME(dir->i_sb->s_blocksize))
292 if (namelen > REISERFS_MAX_NAME (dir->i_sb->s_blocksize)) 296 return NAME_NOT_FOUND;
293 return NAME_NOT_FOUND; 297
294 298 /* we will search for this key in the tree */
295 /* we will search for this key in the tree */ 299 make_cpu_key(&key_to_search, dir,
296 make_cpu_key (&key_to_search, dir, 300 get_third_component(dir->i_sb, name, namelen),
297 get_third_component (dir->i_sb, name, namelen), TYPE_DIRENTRY, 3); 301 TYPE_DIRENTRY, 3);
298 302
299 while (1) { 303 while (1) {
300 retval = search_by_entry_key (dir->i_sb, &key_to_search, path_to_entry, de); 304 retval =
301 if (retval == IO_ERROR) { 305 search_by_entry_key(dir->i_sb, &key_to_search,
302 reiserfs_warning (dir->i_sb, "zam-7001: io error in %s", 306 path_to_entry, de);
303 __FUNCTION__); 307 if (retval == IO_ERROR) {
304 return IO_ERROR; 308 reiserfs_warning(dir->i_sb, "zam-7001: io error in %s",
305 } 309 __FUNCTION__);
306 310 return IO_ERROR;
307 /* compare names for all entries having given hash value */ 311 }
308 retval = linear_search_in_dir_item (&key_to_search, de, name, namelen); 312
309 if (retval != GOTO_PREVIOUS_ITEM) { 313 /* compare names for all entries having given hash value */
310 /* there is no need to scan directory anymore. Given entry found or does not exist */ 314 retval =
311 path_to_entry->pos_in_item = de->de_entry_num; 315 linear_search_in_dir_item(&key_to_search, de, name,
312 return retval; 316 namelen);
313 } 317 if (retval != GOTO_PREVIOUS_ITEM) {
314 318 /* there is no need to scan directory anymore. Given entry found or does not exist */
315 /* there is left neighboring item of this directory and given entry can be there */ 319 path_to_entry->pos_in_item = de->de_entry_num;
316 set_cpu_key_k_offset (&key_to_search, le_ih_k_offset (de->de_ih) - 1); 320 return retval;
317 pathrelse (path_to_entry); 321 }
318 322
319 } /* while (1) */ 323 /* there is left neighboring item of this directory and given entry can be there */
324 set_cpu_key_k_offset(&key_to_search,
325 le_ih_k_offset(de->de_ih) - 1);
326 pathrelse(path_to_entry);
327
328 } /* while (1) */
320} 329}
321 330
322 331static struct dentry *reiserfs_lookup(struct inode *dir, struct dentry *dentry,
323static struct dentry * reiserfs_lookup (struct inode * dir, struct dentry * dentry, struct nameidata *nd) 332 struct nameidata *nd)
324{ 333{
325 int retval; 334 int retval;
326 struct inode * inode = NULL; 335 struct inode *inode = NULL;
327 struct reiserfs_dir_entry de; 336 struct reiserfs_dir_entry de;
328 INITIALIZE_PATH (path_to_entry); 337 INITIALIZE_PATH(path_to_entry);
329 338
330 if (REISERFS_MAX_NAME (dir->i_sb->s_blocksize) < dentry->d_name.len) 339 if (REISERFS_MAX_NAME(dir->i_sb->s_blocksize) < dentry->d_name.len)
331 return ERR_PTR(-ENAMETOOLONG); 340 return ERR_PTR(-ENAMETOOLONG);
332 341
333 reiserfs_write_lock(dir->i_sb); 342 reiserfs_write_lock(dir->i_sb);
334 de.de_gen_number_bit_string = NULL; 343 de.de_gen_number_bit_string = NULL;
335 retval = reiserfs_find_entry (dir, dentry->d_name.name, dentry->d_name.len, &path_to_entry, &de); 344 retval =
336 pathrelse (&path_to_entry); 345 reiserfs_find_entry(dir, dentry->d_name.name, dentry->d_name.len,
337 if (retval == NAME_FOUND) { 346 &path_to_entry, &de);
338 /* Hide the .reiserfs_priv directory */ 347 pathrelse(&path_to_entry);
339 if (reiserfs_xattrs (dir->i_sb) && 348 if (retval == NAME_FOUND) {
340 !old_format_only(dir->i_sb) && 349 /* Hide the .reiserfs_priv directory */
341 REISERFS_SB(dir->i_sb)->priv_root && 350 if (reiserfs_xattrs(dir->i_sb) &&
342 REISERFS_SB(dir->i_sb)->priv_root->d_inode && 351 !old_format_only(dir->i_sb) &&
343 de.de_objectid == le32_to_cpu (INODE_PKEY(REISERFS_SB(dir->i_sb)->priv_root->d_inode)->k_objectid)) { 352 REISERFS_SB(dir->i_sb)->priv_root &&
344 reiserfs_write_unlock (dir->i_sb); 353 REISERFS_SB(dir->i_sb)->priv_root->d_inode &&
345 return ERR_PTR (-EACCES); 354 de.de_objectid ==
355 le32_to_cpu(INODE_PKEY
356 (REISERFS_SB(dir->i_sb)->priv_root->d_inode)->
357 k_objectid)) {
358 reiserfs_write_unlock(dir->i_sb);
359 return ERR_PTR(-EACCES);
360 }
361
362 inode =
363 reiserfs_iget(dir->i_sb, (struct cpu_key *)&(de.de_dir_id));
364 if (!inode || IS_ERR(inode)) {
365 reiserfs_write_unlock(dir->i_sb);
366 return ERR_PTR(-EACCES);
367 }
368
369 /* Propogate the priv_object flag so we know we're in the priv tree */
370 if (is_reiserfs_priv_object(dir))
371 reiserfs_mark_inode_private(inode);
372 }
373 reiserfs_write_unlock(dir->i_sb);
374 if (retval == IO_ERROR) {
375 return ERR_PTR(-EIO);
346 } 376 }
347 377
348 inode = reiserfs_iget (dir->i_sb, (struct cpu_key *)&(de.de_dir_id)); 378 if (inode)
349 if (!inode || IS_ERR(inode)) { 379 return d_splice_alias(inode, dentry);
350 reiserfs_write_unlock(dir->i_sb);
351 return ERR_PTR(-EACCES);
352 }
353
354 /* Propogate the priv_object flag so we know we're in the priv tree */
355 if (is_reiserfs_priv_object (dir))
356 reiserfs_mark_inode_private (inode);
357 }
358 reiserfs_write_unlock(dir->i_sb);
359 if ( retval == IO_ERROR ) {
360 return ERR_PTR(-EIO);
361 }
362
363 if (inode)
364 return d_splice_alias(inode, dentry);
365
366 d_add(dentry, inode);
367 return NULL;
368}
369 380
381 d_add(dentry, inode);
382 return NULL;
383}
370 384
371/* 385/*
372** looks up the dentry of the parent directory for child. 386** looks up the dentry of the parent directory for child.
@@ -374,40 +388,38 @@ static struct dentry * reiserfs_lookup (struct inode * dir, struct dentry * dent
374*/ 388*/
375struct dentry *reiserfs_get_parent(struct dentry *child) 389struct dentry *reiserfs_get_parent(struct dentry *child)
376{ 390{
377 int retval; 391 int retval;
378 struct inode * inode = NULL; 392 struct inode *inode = NULL;
379 struct reiserfs_dir_entry de; 393 struct reiserfs_dir_entry de;
380 INITIALIZE_PATH (path_to_entry); 394 INITIALIZE_PATH(path_to_entry);
381 struct dentry *parent; 395 struct dentry *parent;
382 struct inode *dir = child->d_inode ; 396 struct inode *dir = child->d_inode;
383 397
384 398 if (dir->i_nlink == 0) {
385 if (dir->i_nlink == 0) { 399 return ERR_PTR(-ENOENT);
386 return ERR_PTR(-ENOENT); 400 }
387 } 401 de.de_gen_number_bit_string = NULL;
388 de.de_gen_number_bit_string = NULL; 402
389 403 reiserfs_write_lock(dir->i_sb);
390 reiserfs_write_lock(dir->i_sb); 404 retval = reiserfs_find_entry(dir, "..", 2, &path_to_entry, &de);
391 retval = reiserfs_find_entry (dir, "..", 2, &path_to_entry, &de); 405 pathrelse(&path_to_entry);
392 pathrelse (&path_to_entry); 406 if (retval != NAME_FOUND) {
393 if (retval != NAME_FOUND) { 407 reiserfs_write_unlock(dir->i_sb);
408 return ERR_PTR(-ENOENT);
409 }
410 inode = reiserfs_iget(dir->i_sb, (struct cpu_key *)&(de.de_dir_id));
394 reiserfs_write_unlock(dir->i_sb); 411 reiserfs_write_unlock(dir->i_sb);
395 return ERR_PTR(-ENOENT);
396 }
397 inode = reiserfs_iget (dir->i_sb, (struct cpu_key *)&(de.de_dir_id));
398 reiserfs_write_unlock(dir->i_sb);
399
400 if (!inode || IS_ERR(inode)) {
401 return ERR_PTR(-EACCES);
402 }
403 parent = d_alloc_anon(inode);
404 if (!parent) {
405 iput(inode);
406 parent = ERR_PTR(-ENOMEM);
407 }
408 return parent;
409}
410 412
413 if (!inode || IS_ERR(inode)) {
414 return ERR_PTR(-EACCES);
415 }
416 parent = d_alloc_anon(inode);
417 if (!parent) {
418 iput(inode);
419 parent = ERR_PTR(-ENOMEM);
420 }
421 return parent;
422}
411 423
412/* add entry to the directory (entry can be hidden). 424/* add entry to the directory (entry can be hidden).
413 425
@@ -415,132 +427,143 @@ insert definition of when hidden directories are used here -Hans
415 427
416 Does not mark dir inode dirty, do it after successesfull call to it */ 428 Does not mark dir inode dirty, do it after successesfull call to it */
417 429
418static int reiserfs_add_entry (struct reiserfs_transaction_handle *th, struct inode * dir, 430static int reiserfs_add_entry(struct reiserfs_transaction_handle *th,
419 const char * name, int namelen, struct inode * inode, 431 struct inode *dir, const char *name, int namelen,
420 int visible) 432 struct inode *inode, int visible)
421{ 433{
422 struct cpu_key entry_key; 434 struct cpu_key entry_key;
423 struct reiserfs_de_head * deh; 435 struct reiserfs_de_head *deh;
424 INITIALIZE_PATH (path); 436 INITIALIZE_PATH(path);
425 struct reiserfs_dir_entry de; 437 struct reiserfs_dir_entry de;
426 int bit_string [MAX_GENERATION_NUMBER / (sizeof(int) * 8) + 1]; 438 int bit_string[MAX_GENERATION_NUMBER / (sizeof(int) * 8) + 1];
427 int gen_number; 439 int gen_number;
428 char small_buf[32+DEH_SIZE] ; /* 48 bytes now and we avoid kmalloc 440 char small_buf[32 + DEH_SIZE]; /* 48 bytes now and we avoid kmalloc
429 if we create file with short name */ 441 if we create file with short name */
430 char * buffer; 442 char *buffer;
431 int buflen, paste_size; 443 int buflen, paste_size;
432 int retval; 444 int retval;
433 445
434 BUG_ON (!th->t_trans_id); 446 BUG_ON(!th->t_trans_id);
435 447
436 /* cannot allow items to be added into a busy deleted directory */ 448 /* cannot allow items to be added into a busy deleted directory */
437 if (!namelen) 449 if (!namelen)
438 return -EINVAL; 450 return -EINVAL;
439 451
440 if (namelen > REISERFS_MAX_NAME (dir->i_sb->s_blocksize)) 452 if (namelen > REISERFS_MAX_NAME(dir->i_sb->s_blocksize))
441 return -ENAMETOOLONG; 453 return -ENAMETOOLONG;
442 454
443 /* each entry has unique key. compose it */ 455 /* each entry has unique key. compose it */
444 make_cpu_key (&entry_key, dir, 456 make_cpu_key(&entry_key, dir,
445 get_third_component (dir->i_sb, name, namelen), TYPE_DIRENTRY, 3); 457 get_third_component(dir->i_sb, name, namelen),
446 458 TYPE_DIRENTRY, 3);
447 /* get memory for composing the entry */ 459
448 buflen = DEH_SIZE + ROUND_UP (namelen); 460 /* get memory for composing the entry */
449 if (buflen > sizeof (small_buf)) { 461 buflen = DEH_SIZE + ROUND_UP(namelen);
450 buffer = reiserfs_kmalloc (buflen, GFP_NOFS, dir->i_sb); 462 if (buflen > sizeof(small_buf)) {
451 if (buffer == 0) 463 buffer = reiserfs_kmalloc(buflen, GFP_NOFS, dir->i_sb);
452 return -ENOMEM; 464 if (buffer == 0)
453 } else 465 return -ENOMEM;
454 buffer = small_buf; 466 } else
455 467 buffer = small_buf;
456 paste_size = (get_inode_sd_version (dir) == STAT_DATA_V1) ? (DEH_SIZE + namelen) : buflen; 468
457 469 paste_size =
458 /* fill buffer : directory entry head, name[, dir objectid | , stat data | ,stat data, dir objectid ] */ 470 (get_inode_sd_version(dir) ==
459 deh = (struct reiserfs_de_head *)buffer; 471 STAT_DATA_V1) ? (DEH_SIZE + namelen) : buflen;
460 deh->deh_location = 0; /* JDM Endian safe if 0 */ 472
461 put_deh_offset( deh, cpu_key_k_offset( &entry_key ) ); 473 /* fill buffer : directory entry head, name[, dir objectid | , stat data | ,stat data, dir objectid ] */
462 deh->deh_state = 0; /* JDM Endian safe if 0 */ 474 deh = (struct reiserfs_de_head *)buffer;
463 /* put key (ino analog) to de */ 475 deh->deh_location = 0; /* JDM Endian safe if 0 */
464 deh->deh_dir_id = INODE_PKEY (inode)->k_dir_id; /* safe: k_dir_id is le */ 476 put_deh_offset(deh, cpu_key_k_offset(&entry_key));
465 deh->deh_objectid = INODE_PKEY (inode)->k_objectid; /* safe: k_objectid is le */ 477 deh->deh_state = 0; /* JDM Endian safe if 0 */
466 478 /* put key (ino analog) to de */
467 /* copy name */ 479 deh->deh_dir_id = INODE_PKEY(inode)->k_dir_id; /* safe: k_dir_id is le */
468 memcpy ((char *)(deh + 1), name, namelen); 480 deh->deh_objectid = INODE_PKEY(inode)->k_objectid; /* safe: k_objectid is le */
469 /* padd by 0s to the 4 byte boundary */ 481
470 padd_item ((char *)(deh + 1), ROUND_UP (namelen), namelen); 482 /* copy name */
471 483 memcpy((char *)(deh + 1), name, namelen);
472 /* entry is ready to be pasted into tree, set 'visibility' and 'stat data in entry' attributes */ 484 /* padd by 0s to the 4 byte boundary */
473 mark_de_without_sd (deh); 485 padd_item((char *)(deh + 1), ROUND_UP(namelen), namelen);
474 visible ? mark_de_visible (deh) : mark_de_hidden (deh); 486
475 487 /* entry is ready to be pasted into tree, set 'visibility' and 'stat data in entry' attributes */
476 /* find the proper place for the new entry */ 488 mark_de_without_sd(deh);
477 memset (bit_string, 0, sizeof (bit_string)); 489 visible ? mark_de_visible(deh) : mark_de_hidden(deh);
478 de.de_gen_number_bit_string = (char *)bit_string; 490
479 retval = reiserfs_find_entry (dir, name, namelen, &path, &de); 491 /* find the proper place for the new entry */
480 if( retval != NAME_NOT_FOUND ) { 492 memset(bit_string, 0, sizeof(bit_string));
481 if (buffer != small_buf) 493 de.de_gen_number_bit_string = (char *)bit_string;
482 reiserfs_kfree (buffer, buflen, dir->i_sb); 494 retval = reiserfs_find_entry(dir, name, namelen, &path, &de);
483 pathrelse (&path); 495 if (retval != NAME_NOT_FOUND) {
496 if (buffer != small_buf)
497 reiserfs_kfree(buffer, buflen, dir->i_sb);
498 pathrelse(&path);
499
500 if (retval == IO_ERROR) {
501 return -EIO;
502 }
503
504 if (retval != NAME_FOUND) {
505 reiserfs_warning(dir->i_sb,
506 "zam-7002:%s: \"reiserfs_find_entry\" "
507 "has returned unexpected value (%d)",
508 __FUNCTION__, retval);
509 }
510
511 return -EEXIST;
512 }
484 513
485 if ( retval == IO_ERROR ) { 514 gen_number =
486 return -EIO; 515 find_first_zero_bit((unsigned long *)bit_string,
516 MAX_GENERATION_NUMBER + 1);
517 if (gen_number > MAX_GENERATION_NUMBER) {
518 /* there is no free generation number */
519 reiserfs_warning(dir->i_sb,
520 "reiserfs_add_entry: Congratulations! we have got hash function screwed up");
521 if (buffer != small_buf)
522 reiserfs_kfree(buffer, buflen, dir->i_sb);
523 pathrelse(&path);
524 return -EBUSY;
525 }
526 /* adjust offset of directory enrty */
527 put_deh_offset(deh, SET_GENERATION_NUMBER(deh_offset(deh), gen_number));
528 set_cpu_key_k_offset(&entry_key, deh_offset(deh));
529
530 /* update max-hash-collisions counter in reiserfs_sb_info */
531 PROC_INFO_MAX(th->t_super, max_hash_collisions, gen_number);
532
533 if (gen_number != 0) { /* we need to re-search for the insertion point */
534 if (search_by_entry_key(dir->i_sb, &entry_key, &path, &de) !=
535 NAME_NOT_FOUND) {
536 reiserfs_warning(dir->i_sb,
537 "vs-7032: reiserfs_add_entry: "
538 "entry with this key (%K) already exists",
539 &entry_key);
540
541 if (buffer != small_buf)
542 reiserfs_kfree(buffer, buflen, dir->i_sb);
543 pathrelse(&path);
544 return -EBUSY;
545 }
487 } 546 }
488 547
489 if (retval != NAME_FOUND) { 548 /* perform the insertion of the entry that we have prepared */
490 reiserfs_warning (dir->i_sb, "zam-7002:%s: \"reiserfs_find_entry\" " 549 retval =
491 "has returned unexpected value (%d)", 550 reiserfs_paste_into_item(th, &path, &entry_key, dir, buffer,
492 __FUNCTION__, retval); 551 paste_size);
493 } 552 if (buffer != small_buf)
494 553 reiserfs_kfree(buffer, buflen, dir->i_sb);
495 return -EEXIST; 554 if (retval) {
496 } 555 reiserfs_check_path(&path);
497 556 return retval;
498 gen_number = find_first_zero_bit ((unsigned long *)bit_string, MAX_GENERATION_NUMBER + 1);
499 if (gen_number > MAX_GENERATION_NUMBER) {
500 /* there is no free generation number */
501 reiserfs_warning (dir->i_sb, "reiserfs_add_entry: Congratulations! we have got hash function screwed up");
502 if (buffer != small_buf)
503 reiserfs_kfree (buffer, buflen, dir->i_sb);
504 pathrelse (&path);
505 return -EBUSY;
506 }
507 /* adjust offset of directory enrty */
508 put_deh_offset(deh, SET_GENERATION_NUMBER(deh_offset(deh), gen_number));
509 set_cpu_key_k_offset (&entry_key, deh_offset(deh));
510
511 /* update max-hash-collisions counter in reiserfs_sb_info */
512 PROC_INFO_MAX( th -> t_super, max_hash_collisions, gen_number );
513
514 if (gen_number != 0) { /* we need to re-search for the insertion point */
515 if (search_by_entry_key (dir->i_sb, &entry_key, &path, &de) != NAME_NOT_FOUND) {
516 reiserfs_warning (dir->i_sb, "vs-7032: reiserfs_add_entry: "
517 "entry with this key (%K) already exists",
518 &entry_key);
519
520 if (buffer != small_buf)
521 reiserfs_kfree (buffer, buflen, dir->i_sb);
522 pathrelse (&path);
523 return -EBUSY;
524 } 557 }
525 }
526
527 /* perform the insertion of the entry that we have prepared */
528 retval = reiserfs_paste_into_item (th, &path, &entry_key, dir, buffer, paste_size);
529 if (buffer != small_buf)
530 reiserfs_kfree (buffer, buflen, dir->i_sb);
531 if (retval) {
532 reiserfs_check_path(&path) ;
533 return retval;
534 }
535 558
536 dir->i_size += paste_size; 559 dir->i_size += paste_size;
537 dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC; 560 dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
538 if (!S_ISDIR (inode->i_mode) && visible) 561 if (!S_ISDIR(inode->i_mode) && visible)
539 // reiserfs_mkdir or reiserfs_rename will do that by itself 562 // reiserfs_mkdir or reiserfs_rename will do that by itself
540 reiserfs_update_sd (th, dir); 563 reiserfs_update_sd(th, dir);
541 564
542 reiserfs_check_path(&path) ; 565 reiserfs_check_path(&path);
543 return 0; 566 return 0;
544} 567}
545 568
546/* quota utility function, call if you've had to abort after calling 569/* quota utility function, call if you've had to abort after calling
@@ -548,12 +571,13 @@ static int reiserfs_add_entry (struct reiserfs_transaction_handle *th, struct in
548** This should only be called on inodes that do not have stat data 571** This should only be called on inodes that do not have stat data
549** inserted into the tree yet. 572** inserted into the tree yet.
550*/ 573*/
551static int drop_new_inode(struct inode *inode) { 574static int drop_new_inode(struct inode *inode)
552 DQUOT_DROP(inode); 575{
553 make_bad_inode(inode) ; 576 DQUOT_DROP(inode);
554 inode->i_flags |= S_NOQUOTA; 577 make_bad_inode(inode);
555 iput(inode) ; 578 inode->i_flags |= S_NOQUOTA;
556 return 0 ; 579 iput(inode);
580 return 0;
557} 581}
558 582
559/* utility function that does setup for reiserfs_new_inode. 583/* utility function that does setup for reiserfs_new_inode.
@@ -561,905 +585,968 @@ static int drop_new_inode(struct inode *inode) {
561** outside of a transaction, so we had to pull some bits of 585** outside of a transaction, so we had to pull some bits of
562** reiserfs_new_inode out into this func. 586** reiserfs_new_inode out into this func.
563*/ 587*/
564static int new_inode_init(struct inode *inode, struct inode *dir, int mode) { 588static int new_inode_init(struct inode *inode, struct inode *dir, int mode)
565 589{
566 /* the quota init calls have to know who to charge the quota to, so 590
567 ** we have to set uid and gid here 591 /* the quota init calls have to know who to charge the quota to, so
568 */ 592 ** we have to set uid and gid here
569 inode->i_uid = current->fsuid; 593 */
570 inode->i_mode = mode; 594 inode->i_uid = current->fsuid;
571 595 inode->i_mode = mode;
572 if (dir->i_mode & S_ISGID) { 596
573 inode->i_gid = dir->i_gid; 597 if (dir->i_mode & S_ISGID) {
574 if (S_ISDIR(mode)) 598 inode->i_gid = dir->i_gid;
575 inode->i_mode |= S_ISGID; 599 if (S_ISDIR(mode))
576 } else { 600 inode->i_mode |= S_ISGID;
577 inode->i_gid = current->fsgid; 601 } else {
578 } 602 inode->i_gid = current->fsgid;
579 DQUOT_INIT(inode); 603 }
580 return 0 ; 604 DQUOT_INIT(inode);
605 return 0;
581} 606}
582 607
583static int reiserfs_create (struct inode * dir, struct dentry *dentry, int mode, 608static int reiserfs_create(struct inode *dir, struct dentry *dentry, int mode,
584 struct nameidata *nd) 609 struct nameidata *nd)
585{ 610{
586 int retval; 611 int retval;
587 struct inode * inode; 612 struct inode *inode;
588 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */ 613 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
589 int jbegin_count = JOURNAL_PER_BALANCE_CNT * 2 + 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb)+REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb)); 614 int jbegin_count =
590 struct reiserfs_transaction_handle th ; 615 JOURNAL_PER_BALANCE_CNT * 2 +
591 int locked; 616 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb) +
592 617 REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb));
593 if (!(inode = new_inode(dir->i_sb))) { 618 struct reiserfs_transaction_handle th;
594 return -ENOMEM ; 619 int locked;
595 } 620
596 new_inode_init(inode, dir, mode); 621 if (!(inode = new_inode(dir->i_sb))) {
597 622 return -ENOMEM;
598 locked = reiserfs_cache_default_acl (dir); 623 }
599 624 new_inode_init(inode, dir, mode);
600 reiserfs_write_lock(dir->i_sb);
601
602 if (locked)
603 reiserfs_write_lock_xattrs (dir->i_sb);
604
605 retval = journal_begin(&th, dir->i_sb, jbegin_count);
606 if (retval) {
607 drop_new_inode (inode);
608 goto out_failed;
609 }
610
611 retval = reiserfs_new_inode (&th, dir, mode, NULL, 0/*i_size*/, dentry, inode);
612 if (retval)
613 goto out_failed;
614
615 if (locked) {
616 reiserfs_write_unlock_xattrs (dir->i_sb);
617 locked = 0;
618 }
619
620 inode->i_op = &reiserfs_file_inode_operations;
621 inode->i_fop = &reiserfs_file_operations;
622 inode->i_mapping->a_ops = &reiserfs_address_space_operations ;
623
624 retval = reiserfs_add_entry (&th, dir, dentry->d_name.name, dentry->d_name.len,
625 inode, 1/*visible*/);
626 if (retval) {
627 int err;
628 inode->i_nlink--;
629 reiserfs_update_sd (&th, inode);
630 err = journal_end(&th, dir->i_sb, jbegin_count) ;
631 if (err)
632 retval = err;
633 iput (inode);
634 goto out_failed;
635 }
636 reiserfs_update_inode_transaction(inode) ;
637 reiserfs_update_inode_transaction(dir) ;
638
639 d_instantiate(dentry, inode);
640 retval = journal_end(&th, dir->i_sb, jbegin_count) ;
641
642out_failed:
643 if (locked)
644 reiserfs_write_unlock_xattrs (dir->i_sb);
645 reiserfs_write_unlock(dir->i_sb);
646 return retval;
647}
648 625
626 locked = reiserfs_cache_default_acl(dir);
649 627
650static int reiserfs_mknod (struct inode * dir, struct dentry *dentry, int mode, dev_t rdev) 628 reiserfs_write_lock(dir->i_sb);
651{
652 int retval;
653 struct inode * inode;
654 struct reiserfs_transaction_handle th ;
655 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
656 int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb)+REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb));
657 int locked;
658 629
659 if (!new_valid_dev(rdev)) 630 if (locked)
660 return -EINVAL; 631 reiserfs_write_lock_xattrs(dir->i_sb);
632
633 retval = journal_begin(&th, dir->i_sb, jbegin_count);
634 if (retval) {
635 drop_new_inode(inode);
636 goto out_failed;
637 }
638
639 retval =
640 reiserfs_new_inode(&th, dir, mode, NULL, 0 /*i_size */ , dentry,
641 inode);
642 if (retval)
643 goto out_failed;
644
645 if (locked) {
646 reiserfs_write_unlock_xattrs(dir->i_sb);
647 locked = 0;
648 }
649
650 inode->i_op = &reiserfs_file_inode_operations;
651 inode->i_fop = &reiserfs_file_operations;
652 inode->i_mapping->a_ops = &reiserfs_address_space_operations;
653
654 retval =
655 reiserfs_add_entry(&th, dir, dentry->d_name.name,
656 dentry->d_name.len, inode, 1 /*visible */ );
657 if (retval) {
658 int err;
659 inode->i_nlink--;
660 reiserfs_update_sd(&th, inode);
661 err = journal_end(&th, dir->i_sb, jbegin_count);
662 if (err)
663 retval = err;
664 iput(inode);
665 goto out_failed;
666 }
667 reiserfs_update_inode_transaction(inode);
668 reiserfs_update_inode_transaction(dir);
661 669
662 if (!(inode = new_inode(dir->i_sb))) { 670 d_instantiate(dentry, inode);
663 return -ENOMEM ; 671 retval = journal_end(&th, dir->i_sb, jbegin_count);
664 }
665 new_inode_init(inode, dir, mode);
666 672
667 locked = reiserfs_cache_default_acl (dir); 673 out_failed:
674 if (locked)
675 reiserfs_write_unlock_xattrs(dir->i_sb);
676 reiserfs_write_unlock(dir->i_sb);
677 return retval;
678}
668 679
669 reiserfs_write_lock(dir->i_sb); 680static int reiserfs_mknod(struct inode *dir, struct dentry *dentry, int mode,
681 dev_t rdev)
682{
683 int retval;
684 struct inode *inode;
685 struct reiserfs_transaction_handle th;
686 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
687 int jbegin_count =
688 JOURNAL_PER_BALANCE_CNT * 3 +
689 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb) +
690 REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb));
691 int locked;
692
693 if (!new_valid_dev(rdev))
694 return -EINVAL;
695
696 if (!(inode = new_inode(dir->i_sb))) {
697 return -ENOMEM;
698 }
699 new_inode_init(inode, dir, mode);
670 700
671 if (locked) 701 locked = reiserfs_cache_default_acl(dir);
672 reiserfs_write_lock_xattrs (dir->i_sb);
673 702
674 retval = journal_begin(&th, dir->i_sb, jbegin_count) ; 703 reiserfs_write_lock(dir->i_sb);
675 if (retval) {
676 drop_new_inode (inode);
677 goto out_failed;
678 }
679 704
680 retval = reiserfs_new_inode (&th, dir, mode, NULL, 0/*i_size*/, dentry, inode); 705 if (locked)
681 if (retval) { 706 reiserfs_write_lock_xattrs(dir->i_sb);
682 goto out_failed;
683 }
684 707
685 if (locked) { 708 retval = journal_begin(&th, dir->i_sb, jbegin_count);
686 reiserfs_write_unlock_xattrs (dir->i_sb); 709 if (retval) {
687 locked = 0; 710 drop_new_inode(inode);
688 } 711 goto out_failed;
712 }
689 713
714 retval =
715 reiserfs_new_inode(&th, dir, mode, NULL, 0 /*i_size */ , dentry,
716 inode);
717 if (retval) {
718 goto out_failed;
719 }
690 720
691 inode->i_op = &reiserfs_special_inode_operations; 721 if (locked) {
692 init_special_inode(inode, inode->i_mode, rdev) ; 722 reiserfs_write_unlock_xattrs(dir->i_sb);
723 locked = 0;
724 }
693 725
694 //FIXME: needed for block and char devices only 726 inode->i_op = &reiserfs_special_inode_operations;
695 reiserfs_update_sd (&th, inode); 727 init_special_inode(inode, inode->i_mode, rdev);
728
729 //FIXME: needed for block and char devices only
730 reiserfs_update_sd(&th, inode);
731
732 reiserfs_update_inode_transaction(inode);
733 reiserfs_update_inode_transaction(dir);
734
735 retval =
736 reiserfs_add_entry(&th, dir, dentry->d_name.name,
737 dentry->d_name.len, inode, 1 /*visible */ );
738 if (retval) {
739 int err;
740 inode->i_nlink--;
741 reiserfs_update_sd(&th, inode);
742 err = journal_end(&th, dir->i_sb, jbegin_count);
743 if (err)
744 retval = err;
745 iput(inode);
746 goto out_failed;
747 }
696 748
697 reiserfs_update_inode_transaction(inode) ; 749 d_instantiate(dentry, inode);
698 reiserfs_update_inode_transaction(dir) ; 750 retval = journal_end(&th, dir->i_sb, jbegin_count);
699 751
700 retval = reiserfs_add_entry (&th, dir, dentry->d_name.name, dentry->d_name.len, 752 out_failed:
701 inode, 1/*visible*/); 753 if (locked)
702 if (retval) { 754 reiserfs_write_unlock_xattrs(dir->i_sb);
703 int err; 755 reiserfs_write_unlock(dir->i_sb);
704 inode->i_nlink--; 756 return retval;
705 reiserfs_update_sd (&th, inode);
706 err = journal_end(&th, dir->i_sb, jbegin_count) ;
707 if (err)
708 retval = err;
709 iput (inode);
710 goto out_failed;
711 }
712
713 d_instantiate(dentry, inode);
714 retval = journal_end(&th, dir->i_sb, jbegin_count) ;
715
716out_failed:
717 if (locked)
718 reiserfs_write_unlock_xattrs (dir->i_sb);
719 reiserfs_write_unlock(dir->i_sb);
720 return retval;
721} 757}
722 758
723 759static int reiserfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
724static int reiserfs_mkdir (struct inode * dir, struct dentry *dentry, int mode)
725{ 760{
726 int retval; 761 int retval;
727 struct inode * inode; 762 struct inode *inode;
728 struct reiserfs_transaction_handle th ; 763 struct reiserfs_transaction_handle th;
729 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */ 764 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
730 int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb)+REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb)); 765 int jbegin_count =
731 int locked; 766 JOURNAL_PER_BALANCE_CNT * 3 +
767 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb) +
768 REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb));
769 int locked;
732 770
733#ifdef DISPLACE_NEW_PACKING_LOCALITIES 771#ifdef DISPLACE_NEW_PACKING_LOCALITIES
734 /* set flag that new packing locality created and new blocks for the content * of that directory are not displaced yet */ 772 /* set flag that new packing locality created and new blocks for the content * of that directory are not displaced yet */
735 REISERFS_I(dir)->new_packing_locality = 1; 773 REISERFS_I(dir)->new_packing_locality = 1;
736#endif 774#endif
737 mode = S_IFDIR | mode; 775 mode = S_IFDIR | mode;
738 if (!(inode = new_inode(dir->i_sb))) { 776 if (!(inode = new_inode(dir->i_sb))) {
739 return -ENOMEM ; 777 return -ENOMEM;
740 } 778 }
741 new_inode_init(inode, dir, mode); 779 new_inode_init(inode, dir, mode);
742 780
743 locked = reiserfs_cache_default_acl (dir); 781 locked = reiserfs_cache_default_acl(dir);
744 782
745 reiserfs_write_lock(dir->i_sb); 783 reiserfs_write_lock(dir->i_sb);
746 if (locked) 784 if (locked)
747 reiserfs_write_lock_xattrs (dir->i_sb); 785 reiserfs_write_lock_xattrs(dir->i_sb);
748 786
749 retval = journal_begin(&th, dir->i_sb, jbegin_count) ; 787 retval = journal_begin(&th, dir->i_sb, jbegin_count);
750 if (retval) { 788 if (retval) {
751 drop_new_inode (inode); 789 drop_new_inode(inode);
752 goto out_failed; 790 goto out_failed;
753 } 791 }
754
755
756 /* inc the link count now, so another writer doesn't overflow it while
757 ** we sleep later on.
758 */
759 INC_DIR_INODE_NLINK(dir)
760
761 retval = reiserfs_new_inode (&th, dir, mode, NULL/*symlink*/,
762 old_format_only (dir->i_sb) ?
763 EMPTY_DIR_SIZE_V1 : EMPTY_DIR_SIZE,
764 dentry, inode);
765 if (retval) {
766 dir->i_nlink-- ;
767 goto out_failed;
768 }
769
770 if (locked) {
771 reiserfs_write_unlock_xattrs (dir->i_sb);
772 locked = 0;
773 }
774
775 reiserfs_update_inode_transaction(inode) ;
776 reiserfs_update_inode_transaction(dir) ;
777
778 inode->i_op = &reiserfs_dir_inode_operations;
779 inode->i_fop = &reiserfs_dir_operations;
780
781 // note, _this_ add_entry will not update dir's stat data
782 retval = reiserfs_add_entry (&th, dir, dentry->d_name.name, dentry->d_name.len,
783 inode, 1/*visible*/);
784 if (retval) {
785 int err;
786 inode->i_nlink = 0;
787 DEC_DIR_INODE_NLINK(dir);
788 reiserfs_update_sd (&th, inode);
789 err = journal_end(&th, dir->i_sb, jbegin_count) ;
790 if (err)
791 retval = err;
792 iput (inode);
793 goto out_failed;
794 }
795
796 // the above add_entry did not update dir's stat data
797 reiserfs_update_sd (&th, dir);
798
799 d_instantiate(dentry, inode);
800 retval = journal_end(&th, dir->i_sb, jbegin_count) ;
801out_failed:
802 if (locked)
803 reiserfs_write_unlock_xattrs (dir->i_sb);
804 reiserfs_write_unlock(dir->i_sb);
805 return retval;
806}
807 792
808static inline int reiserfs_empty_dir(struct inode *inode) { 793 /* inc the link count now, so another writer doesn't overflow it while
809 /* we can cheat because an old format dir cannot have 794 ** we sleep later on.
810 ** EMPTY_DIR_SIZE, and a new format dir cannot have 795 */
811 ** EMPTY_DIR_SIZE_V1. So, if the inode is either size, 796 INC_DIR_INODE_NLINK(dir)
812 ** regardless of disk format version, the directory is empty. 797
813 */ 798 retval = reiserfs_new_inode(&th, dir, mode, NULL /*symlink */ ,
814 if (inode->i_size != EMPTY_DIR_SIZE && 799 old_format_only(dir->i_sb) ?
815 inode->i_size != EMPTY_DIR_SIZE_V1) { 800 EMPTY_DIR_SIZE_V1 : EMPTY_DIR_SIZE,
816 return 0 ; 801 dentry, inode);
817 } 802 if (retval) {
818 return 1 ; 803 dir->i_nlink--;
804 goto out_failed;
805 }
806
807 if (locked) {
808 reiserfs_write_unlock_xattrs(dir->i_sb);
809 locked = 0;
810 }
811
812 reiserfs_update_inode_transaction(inode);
813 reiserfs_update_inode_transaction(dir);
814
815 inode->i_op = &reiserfs_dir_inode_operations;
816 inode->i_fop = &reiserfs_dir_operations;
817
818 // note, _this_ add_entry will not update dir's stat data
819 retval =
820 reiserfs_add_entry(&th, dir, dentry->d_name.name,
821 dentry->d_name.len, inode, 1 /*visible */ );
822 if (retval) {
823 int err;
824 inode->i_nlink = 0;
825 DEC_DIR_INODE_NLINK(dir);
826 reiserfs_update_sd(&th, inode);
827 err = journal_end(&th, dir->i_sb, jbegin_count);
828 if (err)
829 retval = err;
830 iput(inode);
831 goto out_failed;
832 }
833 // the above add_entry did not update dir's stat data
834 reiserfs_update_sd(&th, dir);
835
836 d_instantiate(dentry, inode);
837 retval = journal_end(&th, dir->i_sb, jbegin_count);
838 out_failed:
839 if (locked)
840 reiserfs_write_unlock_xattrs(dir->i_sb);
841 reiserfs_write_unlock(dir->i_sb);
842 return retval;
819} 843}
820 844
821static int reiserfs_rmdir (struct inode * dir, struct dentry *dentry) 845static inline int reiserfs_empty_dir(struct inode *inode)
822{ 846{
823 int retval, err; 847 /* we can cheat because an old format dir cannot have
824 struct inode * inode; 848 ** EMPTY_DIR_SIZE, and a new format dir cannot have
825 struct reiserfs_transaction_handle th ; 849 ** EMPTY_DIR_SIZE_V1. So, if the inode is either size,
826 int jbegin_count; 850 ** regardless of disk format version, the directory is empty.
827 INITIALIZE_PATH (path); 851 */
828 struct reiserfs_dir_entry de; 852 if (inode->i_size != EMPTY_DIR_SIZE &&
829 853 inode->i_size != EMPTY_DIR_SIZE_V1) {
830 854 return 0;
831 /* we will be doing 2 balancings and update 2 stat data, we change quotas 855 }
832 * of the owner of the directory and of the owner of the parent directory. 856 return 1;
833 * The quota structure is possibly deleted only on last iput => outside
834 * of this transaction */
835 jbegin_count = JOURNAL_PER_BALANCE_CNT * 2 + 2 + 4 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb);
836
837 reiserfs_write_lock(dir->i_sb);
838 retval = journal_begin(&th, dir->i_sb, jbegin_count) ;
839 if (retval)
840 goto out_rmdir;
841
842 de.de_gen_number_bit_string = NULL;
843 if ( (retval = reiserfs_find_entry (dir, dentry->d_name.name, dentry->d_name.len, &path, &de)) == NAME_NOT_FOUND) {
844 retval = -ENOENT;
845 goto end_rmdir;
846 } else if ( retval == IO_ERROR) {
847 retval = -EIO;
848 goto end_rmdir;
849 }
850
851 inode = dentry->d_inode;
852
853 reiserfs_update_inode_transaction(inode) ;
854 reiserfs_update_inode_transaction(dir) ;
855
856 if (de.de_objectid != inode->i_ino) {
857 // FIXME: compare key of an object and a key found in the
858 // entry
859 retval = -EIO;
860 goto end_rmdir;
861 }
862 if (!reiserfs_empty_dir(inode)) {
863 retval = -ENOTEMPTY;
864 goto end_rmdir;
865 }
866
867 /* cut entry from dir directory */
868 retval = reiserfs_cut_from_item (&th, &path, &(de.de_entry_key), dir,
869 NULL, /* page */
870 0/*new file size - not used here*/);
871 if (retval < 0)
872 goto end_rmdir;
873
874 if ( inode->i_nlink != 2 && inode->i_nlink != 1 )
875 reiserfs_warning (inode->i_sb, "%s: empty directory has nlink "
876 "!= 2 (%d)", __FUNCTION__, inode->i_nlink);
877
878 inode->i_nlink = 0;
879 inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
880 reiserfs_update_sd (&th, inode);
881
882 DEC_DIR_INODE_NLINK(dir)
883 dir->i_size -= (DEH_SIZE + de.de_entrylen);
884 reiserfs_update_sd (&th, dir);
885
886 /* prevent empty directory from getting lost */
887 add_save_link (&th, inode, 0/* not truncate */);
888
889 retval = journal_end(&th, dir->i_sb, jbegin_count) ;
890 reiserfs_check_path(&path) ;
891out_rmdir:
892 reiserfs_write_unlock(dir->i_sb);
893 return retval;
894
895 end_rmdir:
896 /* we must release path, because we did not call
897 reiserfs_cut_from_item, or reiserfs_cut_from_item does not
898 release path if operation was not complete */
899 pathrelse (&path);
900 err = journal_end(&th, dir->i_sb, jbegin_count) ;
901 reiserfs_write_unlock(dir->i_sb);
902 return err ? err : retval;
903} 857}
904 858
905static int reiserfs_unlink (struct inode * dir, struct dentry *dentry) 859static int reiserfs_rmdir(struct inode *dir, struct dentry *dentry)
906{ 860{
907 int retval, err; 861 int retval, err;
908 struct inode * inode; 862 struct inode *inode;
909 struct reiserfs_dir_entry de; 863 struct reiserfs_transaction_handle th;
910 INITIALIZE_PATH (path); 864 int jbegin_count;
911 struct reiserfs_transaction_handle th ; 865 INITIALIZE_PATH(path);
912 int jbegin_count; 866 struct reiserfs_dir_entry de;
913 unsigned long savelink; 867
914 868 /* we will be doing 2 balancings and update 2 stat data, we change quotas
915 inode = dentry->d_inode; 869 * of the owner of the directory and of the owner of the parent directory.
916 870 * The quota structure is possibly deleted only on last iput => outside
917 /* in this transaction we can be doing at max two balancings and update 871 * of this transaction */
918 * two stat datas, we change quotas of the owner of the directory and of 872 jbegin_count =
919 * the owner of the parent directory. The quota structure is possibly 873 JOURNAL_PER_BALANCE_CNT * 2 + 2 +
920 * deleted only on iput => outside of this transaction */ 874 4 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb);
921 jbegin_count = JOURNAL_PER_BALANCE_CNT * 2 + 2 + 4 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb); 875
922 876 reiserfs_write_lock(dir->i_sb);
923 reiserfs_write_lock(dir->i_sb); 877 retval = journal_begin(&th, dir->i_sb, jbegin_count);
924 retval = journal_begin(&th, dir->i_sb, jbegin_count) ; 878 if (retval)
925 if (retval) 879 goto out_rmdir;
926 goto out_unlink; 880
927 881 de.de_gen_number_bit_string = NULL;
928 de.de_gen_number_bit_string = NULL; 882 if ((retval =
929 if ( (retval = reiserfs_find_entry (dir, dentry->d_name.name, dentry->d_name.len, &path, &de)) == NAME_NOT_FOUND) { 883 reiserfs_find_entry(dir, dentry->d_name.name, dentry->d_name.len,
930 retval = -ENOENT; 884 &path, &de)) == NAME_NOT_FOUND) {
931 goto end_unlink; 885 retval = -ENOENT;
932 } else if (retval == IO_ERROR) { 886 goto end_rmdir;
933 retval = -EIO; 887 } else if (retval == IO_ERROR) {
934 goto end_unlink; 888 retval = -EIO;
935 } 889 goto end_rmdir;
936 890 }
937 reiserfs_update_inode_transaction(inode) ; 891
938 reiserfs_update_inode_transaction(dir) ; 892 inode = dentry->d_inode;
939 893
940 if (de.de_objectid != inode->i_ino) { 894 reiserfs_update_inode_transaction(inode);
941 // FIXME: compare key of an object and a key found in the 895 reiserfs_update_inode_transaction(dir);
942 // entry 896
943 retval = -EIO; 897 if (de.de_objectid != inode->i_ino) {
944 goto end_unlink; 898 // FIXME: compare key of an object and a key found in the
945 } 899 // entry
946 900 retval = -EIO;
947 if (!inode->i_nlink) { 901 goto end_rmdir;
948 reiserfs_warning (inode->i_sb, "%s: deleting nonexistent file " 902 }
949 "(%s:%lu), %d", __FUNCTION__, 903 if (!reiserfs_empty_dir(inode)) {
950 reiserfs_bdevname (inode->i_sb), inode->i_ino, 904 retval = -ENOTEMPTY;
951 inode->i_nlink); 905 goto end_rmdir;
952 inode->i_nlink = 1; 906 }
953 } 907
954 908 /* cut entry from dir directory */
955 inode->i_nlink--; 909 retval = reiserfs_cut_from_item(&th, &path, &(de.de_entry_key), dir, NULL, /* page */
956 910 0 /*new file size - not used here */ );
957 /* 911 if (retval < 0)
958 * we schedule before doing the add_save_link call, save the link 912 goto end_rmdir;
959 * count so we don't race 913
960 */ 914 if (inode->i_nlink != 2 && inode->i_nlink != 1)
961 savelink = inode->i_nlink; 915 reiserfs_warning(inode->i_sb, "%s: empty directory has nlink "
962 916 "!= 2 (%d)", __FUNCTION__, inode->i_nlink);
963 917
964 retval = reiserfs_cut_from_item (&th, &path, &(de.de_entry_key), dir, NULL, 0); 918 inode->i_nlink = 0;
965 if (retval < 0) { 919 inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
966 inode->i_nlink++; 920 reiserfs_update_sd(&th, inode);
967 goto end_unlink; 921
968 } 922 DEC_DIR_INODE_NLINK(dir)
969 inode->i_ctime = CURRENT_TIME_SEC; 923 dir->i_size -= (DEH_SIZE + de.de_entrylen);
970 reiserfs_update_sd (&th, inode); 924 reiserfs_update_sd(&th, dir);
971 925
972 dir->i_size -= (de.de_entrylen + DEH_SIZE); 926 /* prevent empty directory from getting lost */
973 dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC; 927 add_save_link(&th, inode, 0 /* not truncate */ );
974 reiserfs_update_sd (&th, dir); 928
975 929 retval = journal_end(&th, dir->i_sb, jbegin_count);
976 if (!savelink) 930 reiserfs_check_path(&path);
977 /* prevent file from getting lost */ 931 out_rmdir:
978 add_save_link (&th, inode, 0/* not truncate */); 932 reiserfs_write_unlock(dir->i_sb);
979 933 return retval;
980 retval = journal_end(&th, dir->i_sb, jbegin_count) ; 934
981 reiserfs_check_path(&path) ; 935 end_rmdir:
982 reiserfs_write_unlock(dir->i_sb); 936 /* we must release path, because we did not call
983 return retval; 937 reiserfs_cut_from_item, or reiserfs_cut_from_item does not
984 938 release path if operation was not complete */
985 end_unlink: 939 pathrelse(&path);
986 pathrelse (&path); 940 err = journal_end(&th, dir->i_sb, jbegin_count);
987 err = journal_end(&th, dir->i_sb, jbegin_count) ; 941 reiserfs_write_unlock(dir->i_sb);
988 reiserfs_check_path(&path) ; 942 return err ? err : retval;
989 if (err)
990 retval = err;
991out_unlink:
992 reiserfs_write_unlock(dir->i_sb);
993 return retval;
994} 943}
995 944
996static int reiserfs_symlink (struct inode * parent_dir, 945static int reiserfs_unlink(struct inode *dir, struct dentry *dentry)
997 struct dentry * dentry, const char * symname)
998{ 946{
999 int retval; 947 int retval, err;
1000 struct inode * inode; 948 struct inode *inode;
1001 char * name; 949 struct reiserfs_dir_entry de;
1002 int item_len; 950 INITIALIZE_PATH(path);
1003 struct reiserfs_transaction_handle th ; 951 struct reiserfs_transaction_handle th;
1004 int mode = S_IFLNK | S_IRWXUGO; 952 int jbegin_count;
1005 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */ 953 unsigned long savelink;
1006 int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 2 * (REISERFS_QUOTA_INIT_BLOCKS(parent_dir->i_sb)+REISERFS_QUOTA_TRANS_BLOCKS(parent_dir->i_sb)); 954
1007 955 inode = dentry->d_inode;
1008 if (!(inode = new_inode(parent_dir->i_sb))) { 956
1009 return -ENOMEM ; 957 /* in this transaction we can be doing at max two balancings and update
1010 } 958 * two stat datas, we change quotas of the owner of the directory and of
1011 new_inode_init(inode, parent_dir, mode); 959 * the owner of the parent directory. The quota structure is possibly
1012 960 * deleted only on iput => outside of this transaction */
1013 reiserfs_write_lock(parent_dir->i_sb); 961 jbegin_count =
1014 item_len = ROUND_UP (strlen (symname)); 962 JOURNAL_PER_BALANCE_CNT * 2 + 2 +
1015 if (item_len > MAX_DIRECT_ITEM_LEN (parent_dir->i_sb->s_blocksize)) { 963 4 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb);
1016 retval = -ENAMETOOLONG; 964
1017 drop_new_inode(inode); 965 reiserfs_write_lock(dir->i_sb);
1018 goto out_failed; 966 retval = journal_begin(&th, dir->i_sb, jbegin_count);
1019 } 967 if (retval)
1020 968 goto out_unlink;
1021 name = reiserfs_kmalloc (item_len, GFP_NOFS, parent_dir->i_sb); 969
1022 if (!name) { 970 de.de_gen_number_bit_string = NULL;
1023 drop_new_inode(inode); 971 if ((retval =
1024 retval = -ENOMEM; 972 reiserfs_find_entry(dir, dentry->d_name.name, dentry->d_name.len,
1025 goto out_failed; 973 &path, &de)) == NAME_NOT_FOUND) {
1026 } 974 retval = -ENOENT;
1027 memcpy (name, symname, strlen (symname)); 975 goto end_unlink;
1028 padd_item (name, item_len, strlen (symname)); 976 } else if (retval == IO_ERROR) {
1029 977 retval = -EIO;
1030 /* We would inherit the default ACL here, but symlinks don't get ACLs */ 978 goto end_unlink;
1031 979 }
1032 retval = journal_begin(&th, parent_dir->i_sb, jbegin_count) ; 980
1033 if (retval) { 981 reiserfs_update_inode_transaction(inode);
1034 drop_new_inode (inode); 982 reiserfs_update_inode_transaction(dir);
1035 reiserfs_kfree (name, item_len, parent_dir->i_sb); 983
1036 goto out_failed; 984 if (de.de_objectid != inode->i_ino) {
1037 } 985 // FIXME: compare key of an object and a key found in the
1038 986 // entry
1039 retval = reiserfs_new_inode (&th, parent_dir, mode, name, strlen (symname), 987 retval = -EIO;
1040 dentry, inode); 988 goto end_unlink;
1041 reiserfs_kfree (name, item_len, parent_dir->i_sb); 989 }
1042 if (retval) { /* reiserfs_new_inode iputs for us */ 990
1043 goto out_failed; 991 if (!inode->i_nlink) {
1044 } 992 reiserfs_warning(inode->i_sb, "%s: deleting nonexistent file "
1045 993 "(%s:%lu), %d", __FUNCTION__,
1046 reiserfs_update_inode_transaction(inode) ; 994 reiserfs_bdevname(inode->i_sb), inode->i_ino,
1047 reiserfs_update_inode_transaction(parent_dir) ; 995 inode->i_nlink);
1048 996 inode->i_nlink = 1;
1049 inode->i_op = &reiserfs_symlink_inode_operations; 997 }
1050 inode->i_mapping->a_ops = &reiserfs_address_space_operations; 998
1051
1052 // must be sure this inode is written with this transaction
1053 //
1054 //reiserfs_update_sd (&th, inode, READ_BLOCKS);
1055
1056 retval = reiserfs_add_entry (&th, parent_dir, dentry->d_name.name,
1057 dentry->d_name.len, inode, 1/*visible*/);
1058 if (retval) {
1059 int err;
1060 inode->i_nlink--; 999 inode->i_nlink--;
1061 reiserfs_update_sd (&th, inode); 1000
1062 err = journal_end(&th, parent_dir->i_sb, jbegin_count) ; 1001 /*
1002 * we schedule before doing the add_save_link call, save the link
1003 * count so we don't race
1004 */
1005 savelink = inode->i_nlink;
1006
1007 retval =
1008 reiserfs_cut_from_item(&th, &path, &(de.de_entry_key), dir, NULL,
1009 0);
1010 if (retval < 0) {
1011 inode->i_nlink++;
1012 goto end_unlink;
1013 }
1014 inode->i_ctime = CURRENT_TIME_SEC;
1015 reiserfs_update_sd(&th, inode);
1016
1017 dir->i_size -= (de.de_entrylen + DEH_SIZE);
1018 dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
1019 reiserfs_update_sd(&th, dir);
1020
1021 if (!savelink)
1022 /* prevent file from getting lost */
1023 add_save_link(&th, inode, 0 /* not truncate */ );
1024
1025 retval = journal_end(&th, dir->i_sb, jbegin_count);
1026 reiserfs_check_path(&path);
1027 reiserfs_write_unlock(dir->i_sb);
1028 return retval;
1029
1030 end_unlink:
1031 pathrelse(&path);
1032 err = journal_end(&th, dir->i_sb, jbegin_count);
1033 reiserfs_check_path(&path);
1063 if (err) 1034 if (err)
1064 retval = err; 1035 retval = err;
1065 iput (inode); 1036 out_unlink:
1066 goto out_failed; 1037 reiserfs_write_unlock(dir->i_sb);
1067 } 1038 return retval;
1068
1069 d_instantiate(dentry, inode);
1070 retval = journal_end(&th, parent_dir->i_sb, jbegin_count) ;
1071out_failed:
1072 reiserfs_write_unlock(parent_dir->i_sb);
1073 return retval;
1074} 1039}
1075 1040
1076static int reiserfs_link (struct dentry * old_dentry, struct inode * dir, struct dentry * dentry) 1041static int reiserfs_symlink(struct inode *parent_dir,
1042 struct dentry *dentry, const char *symname)
1077{ 1043{
1078 int retval; 1044 int retval;
1079 struct inode *inode = old_dentry->d_inode; 1045 struct inode *inode;
1080 struct reiserfs_transaction_handle th ; 1046 char *name;
1081 /* We need blocks for transaction + update of quotas for the owners of the directory */ 1047 int item_len;
1082 int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 2 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb); 1048 struct reiserfs_transaction_handle th;
1083 1049 int mode = S_IFLNK | S_IRWXUGO;
1084 reiserfs_write_lock(dir->i_sb); 1050 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
1085 if (inode->i_nlink >= REISERFS_LINK_MAX) { 1051 int jbegin_count =
1086 //FIXME: sd_nlink is 32 bit for new files 1052 JOURNAL_PER_BALANCE_CNT * 3 +
1087 reiserfs_write_unlock(dir->i_sb); 1053 2 * (REISERFS_QUOTA_INIT_BLOCKS(parent_dir->i_sb) +
1088 return -EMLINK; 1054 REISERFS_QUOTA_TRANS_BLOCKS(parent_dir->i_sb));
1089 } 1055
1090 if (inode->i_nlink == 0) { 1056 if (!(inode = new_inode(parent_dir->i_sb))) {
1091 reiserfs_write_unlock(dir->i_sb); 1057 return -ENOMEM;
1092 return -ENOENT; 1058 }
1093 } 1059 new_inode_init(inode, parent_dir, mode);
1094 1060
1095 /* inc before scheduling so reiserfs_unlink knows we are here */ 1061 reiserfs_write_lock(parent_dir->i_sb);
1096 inode->i_nlink++; 1062 item_len = ROUND_UP(strlen(symname));
1097 1063 if (item_len > MAX_DIRECT_ITEM_LEN(parent_dir->i_sb->s_blocksize)) {
1098 retval = journal_begin(&th, dir->i_sb, jbegin_count) ; 1064 retval = -ENAMETOOLONG;
1099 if (retval) { 1065 drop_new_inode(inode);
1100 inode->i_nlink--; 1066 goto out_failed;
1101 reiserfs_write_unlock (dir->i_sb); 1067 }
1102 return retval; 1068
1103 } 1069 name = reiserfs_kmalloc(item_len, GFP_NOFS, parent_dir->i_sb);
1104 1070 if (!name) {
1105 /* create new entry */ 1071 drop_new_inode(inode);
1106 retval = reiserfs_add_entry (&th, dir, dentry->d_name.name, dentry->d_name.len, 1072 retval = -ENOMEM;
1107 inode, 1/*visible*/); 1073 goto out_failed;
1108 1074 }
1109 reiserfs_update_inode_transaction(inode) ; 1075 memcpy(name, symname, strlen(symname));
1110 reiserfs_update_inode_transaction(dir) ; 1076 padd_item(name, item_len, strlen(symname));
1111 1077
1112 if (retval) { 1078 /* We would inherit the default ACL here, but symlinks don't get ACLs */
1113 int err; 1079
1114 inode->i_nlink--; 1080 retval = journal_begin(&th, parent_dir->i_sb, jbegin_count);
1115 err = journal_end(&th, dir->i_sb, jbegin_count) ; 1081 if (retval) {
1116 reiserfs_write_unlock(dir->i_sb); 1082 drop_new_inode(inode);
1117 return err ? err : retval; 1083 reiserfs_kfree(name, item_len, parent_dir->i_sb);
1118 } 1084 goto out_failed;
1085 }
1086
1087 retval =
1088 reiserfs_new_inode(&th, parent_dir, mode, name, strlen(symname),
1089 dentry, inode);
1090 reiserfs_kfree(name, item_len, parent_dir->i_sb);
1091 if (retval) { /* reiserfs_new_inode iputs for us */
1092 goto out_failed;
1093 }
1119 1094
1120 inode->i_ctime = CURRENT_TIME_SEC; 1095 reiserfs_update_inode_transaction(inode);
1121 reiserfs_update_sd (&th, inode); 1096 reiserfs_update_inode_transaction(parent_dir);
1097
1098 inode->i_op = &reiserfs_symlink_inode_operations;
1099 inode->i_mapping->a_ops = &reiserfs_address_space_operations;
1100
1101 // must be sure this inode is written with this transaction
1102 //
1103 //reiserfs_update_sd (&th, inode, READ_BLOCKS);
1104
1105 retval = reiserfs_add_entry(&th, parent_dir, dentry->d_name.name,
1106 dentry->d_name.len, inode, 1 /*visible */ );
1107 if (retval) {
1108 int err;
1109 inode->i_nlink--;
1110 reiserfs_update_sd(&th, inode);
1111 err = journal_end(&th, parent_dir->i_sb, jbegin_count);
1112 if (err)
1113 retval = err;
1114 iput(inode);
1115 goto out_failed;
1116 }
1122 1117
1123 atomic_inc(&inode->i_count) ; 1118 d_instantiate(dentry, inode);
1124 d_instantiate(dentry, inode); 1119 retval = journal_end(&th, parent_dir->i_sb, jbegin_count);
1125 retval = journal_end(&th, dir->i_sb, jbegin_count) ; 1120 out_failed:
1126 reiserfs_write_unlock(dir->i_sb); 1121 reiserfs_write_unlock(parent_dir->i_sb);
1127 return retval; 1122 return retval;
1128} 1123}
1129 1124
1125static int reiserfs_link(struct dentry *old_dentry, struct inode *dir,
1126 struct dentry *dentry)
1127{
1128 int retval;
1129 struct inode *inode = old_dentry->d_inode;
1130 struct reiserfs_transaction_handle th;
1131 /* We need blocks for transaction + update of quotas for the owners of the directory */
1132 int jbegin_count =
1133 JOURNAL_PER_BALANCE_CNT * 3 +
1134 2 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb);
1135
1136 reiserfs_write_lock(dir->i_sb);
1137 if (inode->i_nlink >= REISERFS_LINK_MAX) {
1138 //FIXME: sd_nlink is 32 bit for new files
1139 reiserfs_write_unlock(dir->i_sb);
1140 return -EMLINK;
1141 }
1142 if (inode->i_nlink == 0) {
1143 reiserfs_write_unlock(dir->i_sb);
1144 return -ENOENT;
1145 }
1146
1147 /* inc before scheduling so reiserfs_unlink knows we are here */
1148 inode->i_nlink++;
1149
1150 retval = journal_begin(&th, dir->i_sb, jbegin_count);
1151 if (retval) {
1152 inode->i_nlink--;
1153 reiserfs_write_unlock(dir->i_sb);
1154 return retval;
1155 }
1156
1157 /* create new entry */
1158 retval =
1159 reiserfs_add_entry(&th, dir, dentry->d_name.name,
1160 dentry->d_name.len, inode, 1 /*visible */ );
1161
1162 reiserfs_update_inode_transaction(inode);
1163 reiserfs_update_inode_transaction(dir);
1164
1165 if (retval) {
1166 int err;
1167 inode->i_nlink--;
1168 err = journal_end(&th, dir->i_sb, jbegin_count);
1169 reiserfs_write_unlock(dir->i_sb);
1170 return err ? err : retval;
1171 }
1172
1173 inode->i_ctime = CURRENT_TIME_SEC;
1174 reiserfs_update_sd(&th, inode);
1175
1176 atomic_inc(&inode->i_count);
1177 d_instantiate(dentry, inode);
1178 retval = journal_end(&th, dir->i_sb, jbegin_count);
1179 reiserfs_write_unlock(dir->i_sb);
1180 return retval;
1181}
1130 1182
1131// de contains information pointing to an entry which 1183// de contains information pointing to an entry which
1132static int de_still_valid (const char * name, int len, struct reiserfs_dir_entry * de) 1184static int de_still_valid(const char *name, int len,
1185 struct reiserfs_dir_entry *de)
1133{ 1186{
1134 struct reiserfs_dir_entry tmp = *de; 1187 struct reiserfs_dir_entry tmp = *de;
1135 1188
1136 // recalculate pointer to name and name length 1189 // recalculate pointer to name and name length
1137 set_de_name_and_namelen (&tmp); 1190 set_de_name_and_namelen(&tmp);
1138 // FIXME: could check more 1191 // FIXME: could check more
1139 if (tmp.de_namelen != len || memcmp (name, de->de_name, len)) 1192 if (tmp.de_namelen != len || memcmp(name, de->de_name, len))
1140 return 0; 1193 return 0;
1141 return 1; 1194 return 1;
1142} 1195}
1143 1196
1144 1197static int entry_points_to_object(const char *name, int len,
1145static int entry_points_to_object (const char * name, int len, struct reiserfs_dir_entry * de, struct inode * inode) 1198 struct reiserfs_dir_entry *de,
1199 struct inode *inode)
1146{ 1200{
1147 if (!de_still_valid (name, len, de)) 1201 if (!de_still_valid(name, len, de))
1148 return 0; 1202 return 0;
1149 1203
1150 if (inode) { 1204 if (inode) {
1151 if (!de_visible (de->de_deh + de->de_entry_num)) 1205 if (!de_visible(de->de_deh + de->de_entry_num))
1152 reiserfs_panic (NULL, "vs-7042: entry_points_to_object: entry must be visible"); 1206 reiserfs_panic(NULL,
1153 return (de->de_objectid == inode->i_ino) ? 1 : 0; 1207 "vs-7042: entry_points_to_object: entry must be visible");
1154 } 1208 return (de->de_objectid == inode->i_ino) ? 1 : 0;
1209 }
1155 1210
1156 /* this must be added hidden entry */ 1211 /* this must be added hidden entry */
1157 if (de_visible (de->de_deh + de->de_entry_num)) 1212 if (de_visible(de->de_deh + de->de_entry_num))
1158 reiserfs_panic (NULL, "vs-7043: entry_points_to_object: entry must be visible"); 1213 reiserfs_panic(NULL,
1214 "vs-7043: entry_points_to_object: entry must be visible");
1159 1215
1160 return 1; 1216 return 1;
1161} 1217}
1162 1218
1163
1164/* sets key of objectid the entry has to point to */ 1219/* sets key of objectid the entry has to point to */
1165static void set_ino_in_dir_entry (struct reiserfs_dir_entry * de, struct reiserfs_key * key) 1220static void set_ino_in_dir_entry(struct reiserfs_dir_entry *de,
1221 struct reiserfs_key *key)
1166{ 1222{
1167 /* JDM These operations are endian safe - both are le */ 1223 /* JDM These operations are endian safe - both are le */
1168 de->de_deh[de->de_entry_num].deh_dir_id = key->k_dir_id; 1224 de->de_deh[de->de_entry_num].deh_dir_id = key->k_dir_id;
1169 de->de_deh[de->de_entry_num].deh_objectid = key->k_objectid; 1225 de->de_deh[de->de_entry_num].deh_objectid = key->k_objectid;
1170} 1226}
1171 1227
1172
1173/* 1228/*
1174 * process, that is going to call fix_nodes/do_balance must hold only 1229 * process, that is going to call fix_nodes/do_balance must hold only
1175 * one path. If it holds 2 or more, it can get into endless waiting in 1230 * one path. If it holds 2 or more, it can get into endless waiting in
1176 * get_empty_nodes or its clones 1231 * get_empty_nodes or its clones
1177 */ 1232 */
1178static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry, 1233static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
1179 struct inode * new_dir, struct dentry *new_dentry) 1234 struct inode *new_dir, struct dentry *new_dentry)
1180{ 1235{
1181 int retval; 1236 int retval;
1182 INITIALIZE_PATH (old_entry_path); 1237 INITIALIZE_PATH(old_entry_path);
1183 INITIALIZE_PATH (new_entry_path); 1238 INITIALIZE_PATH(new_entry_path);
1184 INITIALIZE_PATH (dot_dot_entry_path); 1239 INITIALIZE_PATH(dot_dot_entry_path);
1185 struct item_head new_entry_ih, old_entry_ih, dot_dot_ih ; 1240 struct item_head new_entry_ih, old_entry_ih, dot_dot_ih;
1186 struct reiserfs_dir_entry old_de, new_de, dot_dot_de; 1241 struct reiserfs_dir_entry old_de, new_de, dot_dot_de;
1187 struct inode * old_inode, * new_dentry_inode; 1242 struct inode *old_inode, *new_dentry_inode;
1188 struct reiserfs_transaction_handle th ; 1243 struct reiserfs_transaction_handle th;
1189 int jbegin_count ; 1244 int jbegin_count;
1190 umode_t old_inode_mode; 1245 umode_t old_inode_mode;
1191 unsigned long savelink = 1; 1246 unsigned long savelink = 1;
1192 struct timespec ctime; 1247 struct timespec ctime;
1193 1248
1194 /* three balancings: (1) old name removal, (2) new name insertion 1249 /* three balancings: (1) old name removal, (2) new name insertion
1195 and (3) maybe "save" link insertion 1250 and (3) maybe "save" link insertion
1196 stat data updates: (1) old directory, 1251 stat data updates: (1) old directory,
1197 (2) new directory and (3) maybe old object stat data (when it is 1252 (2) new directory and (3) maybe old object stat data (when it is
1198 directory) and (4) maybe stat data of object to which new entry 1253 directory) and (4) maybe stat data of object to which new entry
1199 pointed initially and (5) maybe block containing ".." of 1254 pointed initially and (5) maybe block containing ".." of
1200 renamed directory 1255 renamed directory
1201 quota updates: two parent directories */ 1256 quota updates: two parent directories */
1202 jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 5 + 4 * REISERFS_QUOTA_TRANS_BLOCKS(old_dir->i_sb); 1257 jbegin_count =
1203 1258 JOURNAL_PER_BALANCE_CNT * 3 + 5 +
1204 old_inode = old_dentry->d_inode; 1259 4 * REISERFS_QUOTA_TRANS_BLOCKS(old_dir->i_sb);
1205 new_dentry_inode = new_dentry->d_inode; 1260
1206 1261 old_inode = old_dentry->d_inode;
1207 // make sure, that oldname still exists and points to an object we 1262 new_dentry_inode = new_dentry->d_inode;
1208 // are going to rename 1263
1209 old_de.de_gen_number_bit_string = NULL; 1264 // make sure, that oldname still exists and points to an object we
1210 reiserfs_write_lock(old_dir->i_sb); 1265 // are going to rename
1211 retval = reiserfs_find_entry (old_dir, old_dentry->d_name.name, old_dentry->d_name.len, 1266 old_de.de_gen_number_bit_string = NULL;
1212 &old_entry_path, &old_de); 1267 reiserfs_write_lock(old_dir->i_sb);
1213 pathrelse (&old_entry_path); 1268 retval =
1214 if (retval == IO_ERROR) { 1269 reiserfs_find_entry(old_dir, old_dentry->d_name.name,
1215 reiserfs_write_unlock(old_dir->i_sb); 1270 old_dentry->d_name.len, &old_entry_path,
1216 return -EIO; 1271 &old_de);
1217 } 1272 pathrelse(&old_entry_path);
1218 1273 if (retval == IO_ERROR) {
1219 if (retval != NAME_FOUND || old_de.de_objectid != old_inode->i_ino) {
1220 reiserfs_write_unlock(old_dir->i_sb);
1221 return -ENOENT;
1222 }
1223
1224 old_inode_mode = old_inode->i_mode;
1225 if (S_ISDIR(old_inode_mode)) {
1226 // make sure, that directory being renamed has correct ".."
1227 // and that its new parent directory has not too many links
1228 // already
1229
1230 if (new_dentry_inode) {
1231 if (!reiserfs_empty_dir(new_dentry_inode)) {
1232 reiserfs_write_unlock(old_dir->i_sb); 1274 reiserfs_write_unlock(old_dir->i_sb);
1233 return -ENOTEMPTY; 1275 return -EIO;
1234 }
1235 } 1276 }
1236 1277
1237 /* directory is renamed, its parent directory will be changed, 1278 if (retval != NAME_FOUND || old_de.de_objectid != old_inode->i_ino) {
1238 ** so find ".." entry 1279 reiserfs_write_unlock(old_dir->i_sb);
1239 */ 1280 return -ENOENT;
1240 dot_dot_de.de_gen_number_bit_string = NULL;
1241 retval = reiserfs_find_entry (old_inode, "..", 2, &dot_dot_entry_path, &dot_dot_de);
1242 pathrelse (&dot_dot_entry_path);
1243 if (retval != NAME_FOUND) {
1244 reiserfs_write_unlock(old_dir->i_sb);
1245 return -EIO;
1246 } 1281 }
1247 1282
1248 /* inode number of .. must equal old_dir->i_ino */ 1283 old_inode_mode = old_inode->i_mode;
1249 if (dot_dot_de.de_objectid != old_dir->i_ino) { 1284 if (S_ISDIR(old_inode_mode)) {
1250 reiserfs_write_unlock(old_dir->i_sb); 1285 // make sure, that directory being renamed has correct ".."
1251 return -EIO; 1286 // and that its new parent directory has not too many links
1287 // already
1288
1289 if (new_dentry_inode) {
1290 if (!reiserfs_empty_dir(new_dentry_inode)) {
1291 reiserfs_write_unlock(old_dir->i_sb);
1292 return -ENOTEMPTY;
1293 }
1294 }
1295
1296 /* directory is renamed, its parent directory will be changed,
1297 ** so find ".." entry
1298 */
1299 dot_dot_de.de_gen_number_bit_string = NULL;
1300 retval =
1301 reiserfs_find_entry(old_inode, "..", 2, &dot_dot_entry_path,
1302 &dot_dot_de);
1303 pathrelse(&dot_dot_entry_path);
1304 if (retval != NAME_FOUND) {
1305 reiserfs_write_unlock(old_dir->i_sb);
1306 return -EIO;
1307 }
1308
1309 /* inode number of .. must equal old_dir->i_ino */
1310 if (dot_dot_de.de_objectid != old_dir->i_ino) {
1311 reiserfs_write_unlock(old_dir->i_sb);
1312 return -EIO;
1313 }
1252 } 1314 }
1253 } 1315
1254 1316 retval = journal_begin(&th, old_dir->i_sb, jbegin_count);
1255 retval = journal_begin(&th, old_dir->i_sb, jbegin_count) ; 1317 if (retval) {
1256 if (retval) { 1318 reiserfs_write_unlock(old_dir->i_sb);
1257 reiserfs_write_unlock (old_dir->i_sb); 1319 return retval;
1258 return retval;
1259 }
1260
1261 /* add new entry (or find the existing one) */
1262 retval = reiserfs_add_entry (&th, new_dir, new_dentry->d_name.name, new_dentry->d_name.len,
1263 old_inode, 0);
1264 if (retval == -EEXIST) {
1265 if (!new_dentry_inode) {
1266 reiserfs_panic (old_dir->i_sb,
1267 "vs-7050: new entry is found, new inode == 0\n");
1268 } 1320 }
1269 } else if (retval) { 1321
1270 int err = journal_end(&th, old_dir->i_sb, jbegin_count) ; 1322 /* add new entry (or find the existing one) */
1271 reiserfs_write_unlock(old_dir->i_sb); 1323 retval =
1272 return err ? err : retval; 1324 reiserfs_add_entry(&th, new_dir, new_dentry->d_name.name,
1273 } 1325 new_dentry->d_name.len, old_inode, 0);
1274 1326 if (retval == -EEXIST) {
1275 reiserfs_update_inode_transaction(old_dir) ; 1327 if (!new_dentry_inode) {
1276 reiserfs_update_inode_transaction(new_dir) ; 1328 reiserfs_panic(old_dir->i_sb,
1277 1329 "vs-7050: new entry is found, new inode == 0\n");
1278 /* this makes it so an fsync on an open fd for the old name will 1330 }
1279 ** commit the rename operation 1331 } else if (retval) {
1280 */ 1332 int err = journal_end(&th, old_dir->i_sb, jbegin_count);
1281 reiserfs_update_inode_transaction(old_inode) ; 1333 reiserfs_write_unlock(old_dir->i_sb);
1282 1334 return err ? err : retval;
1283 if (new_dentry_inode)
1284 reiserfs_update_inode_transaction(new_dentry_inode) ;
1285
1286 while (1) {
1287 // look for old name using corresponding entry key (found by reiserfs_find_entry)
1288 if ((retval = search_by_entry_key (new_dir->i_sb, &old_de.de_entry_key,
1289 &old_entry_path, &old_de)) != NAME_FOUND) {
1290 pathrelse(&old_entry_path);
1291 journal_end(&th, old_dir->i_sb, jbegin_count);
1292 reiserfs_write_unlock(old_dir->i_sb);
1293 return -EIO;
1294 } 1335 }
1295 1336
1296 copy_item_head(&old_entry_ih, get_ih(&old_entry_path)) ; 1337 reiserfs_update_inode_transaction(old_dir);
1297 1338 reiserfs_update_inode_transaction(new_dir);
1298 reiserfs_prepare_for_journal(old_inode->i_sb, old_de.de_bh, 1) ; 1339
1299 1340 /* this makes it so an fsync on an open fd for the old name will
1300 // look for new name by reiserfs_find_entry 1341 ** commit the rename operation
1301 new_de.de_gen_number_bit_string = NULL; 1342 */
1302 retval = reiserfs_find_entry (new_dir, new_dentry->d_name.name, new_dentry->d_name.len, 1343 reiserfs_update_inode_transaction(old_inode);
1303 &new_entry_path, &new_de); 1344
1304 // reiserfs_add_entry should not return IO_ERROR, because it is called with essentially same parameters from 1345 if (new_dentry_inode)
1305 // reiserfs_add_entry above, and we'll catch any i/o errors before we get here. 1346 reiserfs_update_inode_transaction(new_dentry_inode);
1306 if (retval != NAME_FOUND_INVISIBLE && retval != NAME_FOUND) { 1347
1307 pathrelse(&new_entry_path); 1348 while (1) {
1308 pathrelse(&old_entry_path); 1349 // look for old name using corresponding entry key (found by reiserfs_find_entry)
1309 journal_end(&th, old_dir->i_sb, jbegin_count); 1350 if ((retval =
1310 reiserfs_write_unlock(old_dir->i_sb); 1351 search_by_entry_key(new_dir->i_sb, &old_de.de_entry_key,
1311 return -EIO; 1352 &old_entry_path,
1353 &old_de)) != NAME_FOUND) {
1354 pathrelse(&old_entry_path);
1355 journal_end(&th, old_dir->i_sb, jbegin_count);
1356 reiserfs_write_unlock(old_dir->i_sb);
1357 return -EIO;
1358 }
1359
1360 copy_item_head(&old_entry_ih, get_ih(&old_entry_path));
1361
1362 reiserfs_prepare_for_journal(old_inode->i_sb, old_de.de_bh, 1);
1363
1364 // look for new name by reiserfs_find_entry
1365 new_de.de_gen_number_bit_string = NULL;
1366 retval =
1367 reiserfs_find_entry(new_dir, new_dentry->d_name.name,
1368 new_dentry->d_name.len, &new_entry_path,
1369 &new_de);
1370 // reiserfs_add_entry should not return IO_ERROR, because it is called with essentially same parameters from
1371 // reiserfs_add_entry above, and we'll catch any i/o errors before we get here.
1372 if (retval != NAME_FOUND_INVISIBLE && retval != NAME_FOUND) {
1373 pathrelse(&new_entry_path);
1374 pathrelse(&old_entry_path);
1375 journal_end(&th, old_dir->i_sb, jbegin_count);
1376 reiserfs_write_unlock(old_dir->i_sb);
1377 return -EIO;
1378 }
1379
1380 copy_item_head(&new_entry_ih, get_ih(&new_entry_path));
1381
1382 reiserfs_prepare_for_journal(old_inode->i_sb, new_de.de_bh, 1);
1383
1384 if (S_ISDIR(old_inode->i_mode)) {
1385 if ((retval =
1386 search_by_entry_key(new_dir->i_sb,
1387 &dot_dot_de.de_entry_key,
1388 &dot_dot_entry_path,
1389 &dot_dot_de)) != NAME_FOUND) {
1390 pathrelse(&dot_dot_entry_path);
1391 pathrelse(&new_entry_path);
1392 pathrelse(&old_entry_path);
1393 journal_end(&th, old_dir->i_sb, jbegin_count);
1394 reiserfs_write_unlock(old_dir->i_sb);
1395 return -EIO;
1396 }
1397 copy_item_head(&dot_dot_ih,
1398 get_ih(&dot_dot_entry_path));
1399 // node containing ".." gets into transaction
1400 reiserfs_prepare_for_journal(old_inode->i_sb,
1401 dot_dot_de.de_bh, 1);
1402 }
1403 /* we should check seals here, not do
1404 this stuff, yes? Then, having
1405 gathered everything into RAM we
1406 should lock the buffers, yes? -Hans */
1407 /* probably. our rename needs to hold more
1408 ** than one path at once. The seals would
1409 ** have to be written to deal with multi-path
1410 ** issues -chris
1411 */
1412 /* sanity checking before doing the rename - avoid races many
1413 ** of the above checks could have scheduled. We have to be
1414 ** sure our items haven't been shifted by another process.
1415 */
1416 if (item_moved(&new_entry_ih, &new_entry_path) ||
1417 !entry_points_to_object(new_dentry->d_name.name,
1418 new_dentry->d_name.len,
1419 &new_de, new_dentry_inode) ||
1420 item_moved(&old_entry_ih, &old_entry_path) ||
1421 !entry_points_to_object(old_dentry->d_name.name,
1422 old_dentry->d_name.len,
1423 &old_de, old_inode)) {
1424 reiserfs_restore_prepared_buffer(old_inode->i_sb,
1425 new_de.de_bh);
1426 reiserfs_restore_prepared_buffer(old_inode->i_sb,
1427 old_de.de_bh);
1428 if (S_ISDIR(old_inode_mode))
1429 reiserfs_restore_prepared_buffer(old_inode->
1430 i_sb,
1431 dot_dot_de.
1432 de_bh);
1433 continue;
1434 }
1435 if (S_ISDIR(old_inode_mode)) {
1436 if (item_moved(&dot_dot_ih, &dot_dot_entry_path) ||
1437 !entry_points_to_object("..", 2, &dot_dot_de,
1438 old_dir)) {
1439 reiserfs_restore_prepared_buffer(old_inode->
1440 i_sb,
1441 old_de.de_bh);
1442 reiserfs_restore_prepared_buffer(old_inode->
1443 i_sb,
1444 new_de.de_bh);
1445 reiserfs_restore_prepared_buffer(old_inode->
1446 i_sb,
1447 dot_dot_de.
1448 de_bh);
1449 continue;
1450 }
1451 }
1452
1453 RFALSE(S_ISDIR(old_inode_mode) &&
1454 !buffer_journal_prepared(dot_dot_de.de_bh), "");
1455
1456 break;
1312 } 1457 }
1313 1458
1314 copy_item_head(&new_entry_ih, get_ih(&new_entry_path)) ; 1459 /* ok, all the changes can be done in one fell swoop when we
1460 have claimed all the buffers needed. */
1315 1461
1316 reiserfs_prepare_for_journal(old_inode->i_sb, new_de.de_bh, 1) ; 1462 mark_de_visible(new_de.de_deh + new_de.de_entry_num);
1463 set_ino_in_dir_entry(&new_de, INODE_PKEY(old_inode));
1464 journal_mark_dirty(&th, old_dir->i_sb, new_de.de_bh);
1317 1465
1318 if (S_ISDIR(old_inode->i_mode)) { 1466 mark_de_hidden(old_de.de_deh + old_de.de_entry_num);
1319 if ((retval = search_by_entry_key (new_dir->i_sb, &dot_dot_de.de_entry_key, 1467 journal_mark_dirty(&th, old_dir->i_sb, old_de.de_bh);
1320 &dot_dot_entry_path, &dot_dot_de)) != NAME_FOUND) { 1468 ctime = CURRENT_TIME_SEC;
1321 pathrelse(&dot_dot_entry_path); 1469 old_dir->i_ctime = old_dir->i_mtime = ctime;
1322 pathrelse(&new_entry_path); 1470 new_dir->i_ctime = new_dir->i_mtime = ctime;
1323 pathrelse(&old_entry_path); 1471 /* thanks to Alex Adriaanse <alex_a@caltech.edu> for patch which adds ctime update of
1324 journal_end(&th, old_dir->i_sb, jbegin_count); 1472 renamed object */
1325 reiserfs_write_unlock(old_dir->i_sb); 1473 old_inode->i_ctime = ctime;
1326 return -EIO; 1474
1327 } 1475 if (new_dentry_inode) {
1328 copy_item_head(&dot_dot_ih, get_ih(&dot_dot_entry_path)) ; 1476 // adjust link number of the victim
1329 // node containing ".." gets into transaction 1477 if (S_ISDIR(new_dentry_inode->i_mode)) {
1330 reiserfs_prepare_for_journal(old_inode->i_sb, dot_dot_de.de_bh, 1) ; 1478 new_dentry_inode->i_nlink = 0;
1331 } 1479 } else {
1332 /* we should check seals here, not do 1480 new_dentry_inode->i_nlink--;
1333 this stuff, yes? Then, having 1481 }
1334 gathered everything into RAM we 1482 new_dentry_inode->i_ctime = ctime;
1335 should lock the buffers, yes? -Hans */ 1483 savelink = new_dentry_inode->i_nlink;
1336 /* probably. our rename needs to hold more
1337 ** than one path at once. The seals would
1338 ** have to be written to deal with multi-path
1339 ** issues -chris
1340 */
1341 /* sanity checking before doing the rename - avoid races many
1342 ** of the above checks could have scheduled. We have to be
1343 ** sure our items haven't been shifted by another process.
1344 */
1345 if (item_moved(&new_entry_ih, &new_entry_path) ||
1346 !entry_points_to_object(new_dentry->d_name.name,
1347 new_dentry->d_name.len,
1348 &new_de, new_dentry_inode) ||
1349 item_moved(&old_entry_ih, &old_entry_path) ||
1350 !entry_points_to_object (old_dentry->d_name.name,
1351 old_dentry->d_name.len,
1352 &old_de, old_inode)) {
1353 reiserfs_restore_prepared_buffer (old_inode->i_sb, new_de.de_bh);
1354 reiserfs_restore_prepared_buffer (old_inode->i_sb, old_de.de_bh);
1355 if (S_ISDIR(old_inode_mode))
1356 reiserfs_restore_prepared_buffer (old_inode->i_sb, dot_dot_de.de_bh);
1357 continue;
1358 } 1484 }
1485
1359 if (S_ISDIR(old_inode_mode)) { 1486 if (S_ISDIR(old_inode_mode)) {
1360 if ( item_moved(&dot_dot_ih, &dot_dot_entry_path) || 1487 // adjust ".." of renamed directory
1361 !entry_points_to_object ( "..", 2, &dot_dot_de, old_dir) ) { 1488 set_ino_in_dir_entry(&dot_dot_de, INODE_PKEY(new_dir));
1362 reiserfs_restore_prepared_buffer (old_inode->i_sb, old_de.de_bh); 1489 journal_mark_dirty(&th, new_dir->i_sb, dot_dot_de.de_bh);
1363 reiserfs_restore_prepared_buffer (old_inode->i_sb, new_de.de_bh); 1490
1364 reiserfs_restore_prepared_buffer (old_inode->i_sb, dot_dot_de.de_bh); 1491 if (!new_dentry_inode)
1365 continue; 1492 /* there (in new_dir) was no directory, so it got new link
1366 } 1493 (".." of renamed directory) */
1494 INC_DIR_INODE_NLINK(new_dir);
1495
1496 /* old directory lost one link - ".. " of renamed directory */
1497 DEC_DIR_INODE_NLINK(old_dir);
1367 } 1498 }
1499 // looks like in 2.3.99pre3 brelse is atomic. so we can use pathrelse
1500 pathrelse(&new_entry_path);
1501 pathrelse(&dot_dot_entry_path);
1368 1502
1369 RFALSE( S_ISDIR(old_inode_mode) && 1503 // FIXME: this reiserfs_cut_from_item's return value may screw up
1370 !buffer_journal_prepared(dot_dot_de.de_bh), "" ); 1504 // anybody, but it will panic if will not be able to find the
1371 1505 // entry. This needs one more clean up
1372 break; 1506 if (reiserfs_cut_from_item
1373 } 1507 (&th, &old_entry_path, &(old_de.de_entry_key), old_dir, NULL,
1374 1508 0) < 0)
1375 /* ok, all the changes can be done in one fell swoop when we 1509 reiserfs_warning(old_dir->i_sb,
1376 have claimed all the buffers needed.*/ 1510 "vs-7060: reiserfs_rename: couldn't not cut old name. Fsck later?");
1377 1511
1378 mark_de_visible (new_de.de_deh + new_de.de_entry_num); 1512 old_dir->i_size -= DEH_SIZE + old_de.de_entrylen;
1379 set_ino_in_dir_entry (&new_de, INODE_PKEY (old_inode)); 1513
1380 journal_mark_dirty (&th, old_dir->i_sb, new_de.de_bh); 1514 reiserfs_update_sd(&th, old_dir);
1381 1515 reiserfs_update_sd(&th, new_dir);
1382 mark_de_hidden (old_de.de_deh + old_de.de_entry_num); 1516 reiserfs_update_sd(&th, old_inode);
1383 journal_mark_dirty (&th, old_dir->i_sb, old_de.de_bh); 1517
1384 ctime = CURRENT_TIME_SEC; 1518 if (new_dentry_inode) {
1385 old_dir->i_ctime = old_dir->i_mtime = ctime; 1519 if (savelink == 0)
1386 new_dir->i_ctime = new_dir->i_mtime = ctime; 1520 add_save_link(&th, new_dentry_inode,
1387 /* thanks to Alex Adriaanse <alex_a@caltech.edu> for patch which adds ctime update of 1521 0 /* not truncate */ );
1388 renamed object */ 1522 reiserfs_update_sd(&th, new_dentry_inode);
1389 old_inode->i_ctime = ctime;
1390
1391 if (new_dentry_inode) {
1392 // adjust link number of the victim
1393 if (S_ISDIR(new_dentry_inode->i_mode)) {
1394 new_dentry_inode->i_nlink = 0;
1395 } else {
1396 new_dentry_inode->i_nlink--;
1397 } 1523 }
1398 new_dentry_inode->i_ctime = ctime; 1524
1399 savelink = new_dentry_inode->i_nlink; 1525 retval = journal_end(&th, old_dir->i_sb, jbegin_count);
1400 } 1526 reiserfs_write_unlock(old_dir->i_sb);
1401 1527 return retval;
1402 if (S_ISDIR(old_inode_mode)) {
1403 // adjust ".." of renamed directory
1404 set_ino_in_dir_entry (&dot_dot_de, INODE_PKEY (new_dir));
1405 journal_mark_dirty (&th, new_dir->i_sb, dot_dot_de.de_bh);
1406
1407 if (!new_dentry_inode)
1408 /* there (in new_dir) was no directory, so it got new link
1409 (".." of renamed directory) */
1410 INC_DIR_INODE_NLINK(new_dir);
1411
1412 /* old directory lost one link - ".. " of renamed directory */
1413 DEC_DIR_INODE_NLINK(old_dir);
1414 }
1415
1416 // looks like in 2.3.99pre3 brelse is atomic. so we can use pathrelse
1417 pathrelse (&new_entry_path);
1418 pathrelse (&dot_dot_entry_path);
1419
1420 // FIXME: this reiserfs_cut_from_item's return value may screw up
1421 // anybody, but it will panic if will not be able to find the
1422 // entry. This needs one more clean up
1423 if (reiserfs_cut_from_item (&th, &old_entry_path, &(old_de.de_entry_key), old_dir, NULL, 0) < 0)
1424 reiserfs_warning (old_dir->i_sb, "vs-7060: reiserfs_rename: couldn't not cut old name. Fsck later?");
1425
1426 old_dir->i_size -= DEH_SIZE + old_de.de_entrylen;
1427
1428 reiserfs_update_sd (&th, old_dir);
1429 reiserfs_update_sd (&th, new_dir);
1430 reiserfs_update_sd (&th, old_inode);
1431
1432 if (new_dentry_inode) {
1433 if (savelink == 0)
1434 add_save_link (&th, new_dentry_inode, 0/* not truncate */);
1435 reiserfs_update_sd (&th, new_dentry_inode);
1436 }
1437
1438 retval = journal_end(&th, old_dir->i_sb, jbegin_count) ;
1439 reiserfs_write_unlock(old_dir->i_sb);
1440 return retval;
1441} 1528}
1442 1529
1443/* 1530/*
1444 * directories can handle most operations... 1531 * directories can handle most operations...
1445 */ 1532 */
1446struct inode_operations reiserfs_dir_inode_operations = { 1533struct inode_operations reiserfs_dir_inode_operations = {
1447 //&reiserfs_dir_operations, /* default_file_ops */ 1534 //&reiserfs_dir_operations, /* default_file_ops */
1448 .create = reiserfs_create, 1535 .create = reiserfs_create,
1449 .lookup = reiserfs_lookup, 1536 .lookup = reiserfs_lookup,
1450 .link = reiserfs_link, 1537 .link = reiserfs_link,
1451 .unlink = reiserfs_unlink, 1538 .unlink = reiserfs_unlink,
1452 .symlink = reiserfs_symlink, 1539 .symlink = reiserfs_symlink,
1453 .mkdir = reiserfs_mkdir, 1540 .mkdir = reiserfs_mkdir,
1454 .rmdir = reiserfs_rmdir, 1541 .rmdir = reiserfs_rmdir,
1455 .mknod = reiserfs_mknod, 1542 .mknod = reiserfs_mknod,
1456 .rename = reiserfs_rename, 1543 .rename = reiserfs_rename,
1457 .setattr = reiserfs_setattr, 1544 .setattr = reiserfs_setattr,
1458 .setxattr = reiserfs_setxattr, 1545 .setxattr = reiserfs_setxattr,
1459 .getxattr = reiserfs_getxattr, 1546 .getxattr = reiserfs_getxattr,
1460 .listxattr = reiserfs_listxattr, 1547 .listxattr = reiserfs_listxattr,
1461 .removexattr = reiserfs_removexattr, 1548 .removexattr = reiserfs_removexattr,
1462 .permission = reiserfs_permission, 1549 .permission = reiserfs_permission,
1463}; 1550};
1464 1551
1465/* 1552/*
@@ -1467,28 +1554,27 @@ struct inode_operations reiserfs_dir_inode_operations = {
1467 * stuff added 1554 * stuff added
1468 */ 1555 */
1469struct inode_operations reiserfs_symlink_inode_operations = { 1556struct inode_operations reiserfs_symlink_inode_operations = {
1470 .readlink = generic_readlink, 1557 .readlink = generic_readlink,
1471 .follow_link = page_follow_link_light, 1558 .follow_link = page_follow_link_light,
1472 .put_link = page_put_link, 1559 .put_link = page_put_link,
1473 .setattr = reiserfs_setattr, 1560 .setattr = reiserfs_setattr,
1474 .setxattr = reiserfs_setxattr, 1561 .setxattr = reiserfs_setxattr,
1475 .getxattr = reiserfs_getxattr, 1562 .getxattr = reiserfs_getxattr,
1476 .listxattr = reiserfs_listxattr, 1563 .listxattr = reiserfs_listxattr,
1477 .removexattr = reiserfs_removexattr, 1564 .removexattr = reiserfs_removexattr,
1478 .permission = reiserfs_permission, 1565 .permission = reiserfs_permission,
1479 1566
1480}; 1567};
1481 1568
1482
1483/* 1569/*
1484 * special file operations.. just xattr/acl stuff 1570 * special file operations.. just xattr/acl stuff
1485 */ 1571 */
1486struct inode_operations reiserfs_special_inode_operations = { 1572struct inode_operations reiserfs_special_inode_operations = {
1487 .setattr = reiserfs_setattr, 1573 .setattr = reiserfs_setattr,
1488 .setxattr = reiserfs_setxattr, 1574 .setxattr = reiserfs_setxattr,
1489 .getxattr = reiserfs_getxattr, 1575 .getxattr = reiserfs_getxattr,
1490 .listxattr = reiserfs_listxattr, 1576 .listxattr = reiserfs_listxattr,
1491 .removexattr = reiserfs_removexattr, 1577 .removexattr = reiserfs_removexattr,
1492 .permission = reiserfs_permission, 1578 .permission = reiserfs_permission,
1493 1579
1494}; 1580};
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-29 21:29:56 -0500