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Commit | Line | Data |
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274dcf55 MM |
1 | /* |
2 | * (C) 2001 Clemson University and The University of Chicago | |
3 | * | |
4 | * See COPYING in top-level directory. | |
5 | */ | |
6 | ||
7 | /* | |
8 | * Linux VFS namei operations. | |
9 | */ | |
10 | ||
11 | #include "protocol.h" | |
575e9461 | 12 | #include "orangefs-kernel.h" |
274dcf55 MM |
13 | |
14 | /* | |
15 | * Get a newly allocated inode to go with a negative dentry. | |
16 | */ | |
8bb8aefd | 17 | static int orangefs_create(struct inode *dir, |
274dcf55 MM |
18 | struct dentry *dentry, |
19 | umode_t mode, | |
20 | bool exclusive) | |
21 | { | |
8bb8aefd YL |
22 | struct orangefs_inode_s *parent = ORANGEFS_I(dir); |
23 | struct orangefs_kernel_op_s *new_op; | |
274dcf55 MM |
24 | struct inode *inode; |
25 | int ret; | |
26 | ||
f66debf1 | 27 | gossip_debug(GOSSIP_NAME_DEBUG, "%s: %pd\n", |
5253487e | 28 | __func__, |
f66debf1 | 29 | dentry); |
274dcf55 | 30 | |
8bb8aefd | 31 | new_op = op_alloc(ORANGEFS_VFS_OP_CREATE); |
274dcf55 MM |
32 | if (!new_op) |
33 | return -ENOMEM; | |
34 | ||
35 | new_op->upcall.req.create.parent_refn = parent->refn; | |
36 | ||
37 | fill_default_sys_attrs(new_op->upcall.req.create.attributes, | |
8bb8aefd | 38 | ORANGEFS_TYPE_METAFILE, mode); |
274dcf55 MM |
39 | |
40 | strncpy(new_op->upcall.req.create.d_name, | |
47b4948f | 41 | dentry->d_name.name, ORANGEFS_NAME_MAX); |
274dcf55 MM |
42 | |
43 | ret = service_operation(new_op, __func__, get_interruptible_flag(dir)); | |
44 | ||
45 | gossip_debug(GOSSIP_NAME_DEBUG, | |
f66debf1 | 46 | "%s: %pd: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n", |
5253487e | 47 | __func__, |
f66debf1 | 48 | dentry, |
274dcf55 | 49 | &new_op->downcall.resp.create.refn.khandle, |
5253487e MM |
50 | new_op->downcall.resp.create.refn.fs_id, |
51 | new_op, | |
52 | ret); | |
274dcf55 | 53 | |
5253487e | 54 | if (ret < 0) |
274dcf55 | 55 | goto out; |
274dcf55 | 56 | |
8bb8aefd | 57 | inode = orangefs_new_inode(dir->i_sb, dir, S_IFREG | mode, 0, |
274dcf55 MM |
58 | &new_op->downcall.resp.create.refn); |
59 | if (IS_ERR(inode)) { | |
f66debf1 | 60 | gossip_err("%s: Failed to allocate inode for file :%pd:\n", |
5253487e | 61 | __func__, |
f66debf1 | 62 | dentry); |
274dcf55 MM |
63 | ret = PTR_ERR(inode); |
64 | goto out; | |
65 | } | |
66 | ||
67 | gossip_debug(GOSSIP_NAME_DEBUG, | |
f66debf1 | 68 | "%s: Assigned inode :%pU: for file :%pd:\n", |
5253487e MM |
69 | __func__, |
70 | get_khandle_from_ino(inode), | |
f66debf1 | 71 | dentry); |
274dcf55 MM |
72 | |
73 | d_instantiate(dentry, inode); | |
74 | unlock_new_inode(inode); | |
804b1737 | 75 | orangefs_set_timeout(dentry); |
8bbb20a8 | 76 | ORANGEFS_I(inode)->getattr_time = jiffies - 1; |
68a24a6c | 77 | ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS; |
274dcf55 MM |
78 | |
79 | gossip_debug(GOSSIP_NAME_DEBUG, | |
f66debf1 | 80 | "%s: dentry instantiated for %pd\n", |
5253487e | 81 | __func__, |
f66debf1 | 82 | dentry); |
274dcf55 MM |
83 | |
84 | SetMtimeFlag(parent); | |
c2050a45 | 85 | dir->i_mtime = dir->i_ctime = current_time(dir); |
274dcf55 MM |
86 | mark_inode_dirty_sync(dir); |
87 | ret = 0; | |
88 | out: | |
89 | op_release(new_op); | |
5253487e | 90 | gossip_debug(GOSSIP_NAME_DEBUG, |
f66debf1 | 91 | "%s: %pd: returning %d\n", |
5253487e | 92 | __func__, |
f66debf1 | 93 | dentry, |
5253487e | 94 | ret); |
274dcf55 MM |
95 | return ret; |
96 | } | |
97 | ||
98 | /* | |
99 | * Attempt to resolve an object name (dentry->d_name), parent handle, and | |
100 | * fsid into a handle for the object. | |
101 | */ | |
8bb8aefd | 102 | static struct dentry *orangefs_lookup(struct inode *dir, struct dentry *dentry, |
274dcf55 MM |
103 | unsigned int flags) |
104 | { | |
8bb8aefd YL |
105 | struct orangefs_inode_s *parent = ORANGEFS_I(dir); |
106 | struct orangefs_kernel_op_s *new_op; | |
274dcf55 MM |
107 | struct inode *inode; |
108 | struct dentry *res; | |
109 | int ret = -EINVAL; | |
110 | ||
111 | /* | |
112 | * in theory we could skip a lookup here (if the intent is to | |
113 | * create) in order to avoid a potentially failed lookup, but | |
114 | * leaving it in can skip a valid lookup and try to create a file | |
115 | * that already exists (e.g. the vfs already handles checking for | |
116 | * -EEXIST on O_EXCL opens, which is broken if we skip this lookup | |
117 | * in the create path) | |
118 | */ | |
f66debf1 AV |
119 | gossip_debug(GOSSIP_NAME_DEBUG, "%s called on %pd\n", |
120 | __func__, dentry); | |
274dcf55 | 121 | |
47b4948f | 122 | if (dentry->d_name.len > (ORANGEFS_NAME_MAX - 1)) |
274dcf55 MM |
123 | return ERR_PTR(-ENAMETOOLONG); |
124 | ||
8bb8aefd | 125 | new_op = op_alloc(ORANGEFS_VFS_OP_LOOKUP); |
274dcf55 MM |
126 | if (!new_op) |
127 | return ERR_PTR(-ENOMEM); | |
128 | ||
7cec28e9 | 129 | new_op->upcall.req.lookup.sym_follow = ORANGEFS_LOOKUP_LINK_NO_FOLLOW; |
274dcf55 MM |
130 | |
131 | gossip_debug(GOSSIP_NAME_DEBUG, "%s:%s:%d using parent %pU\n", | |
132 | __FILE__, | |
133 | __func__, | |
134 | __LINE__, | |
135 | &parent->refn.khandle); | |
136 | new_op->upcall.req.lookup.parent_refn = parent->refn; | |
137 | ||
138 | strncpy(new_op->upcall.req.lookup.d_name, dentry->d_name.name, | |
47b4948f | 139 | ORANGEFS_NAME_MAX); |
274dcf55 MM |
140 | |
141 | gossip_debug(GOSSIP_NAME_DEBUG, | |
6ceaf781 | 142 | "%s: doing lookup on %s under %pU,%d\n", |
274dcf55 MM |
143 | __func__, |
144 | new_op->upcall.req.lookup.d_name, | |
145 | &new_op->upcall.req.lookup.parent_refn.khandle, | |
6ceaf781 | 146 | new_op->upcall.req.lookup.parent_refn.fs_id); |
274dcf55 MM |
147 | |
148 | ret = service_operation(new_op, __func__, get_interruptible_flag(dir)); | |
149 | ||
150 | gossip_debug(GOSSIP_NAME_DEBUG, | |
151 | "Lookup Got %pU, fsid %d (ret=%d)\n", | |
152 | &new_op->downcall.resp.lookup.refn.khandle, | |
153 | new_op->downcall.resp.lookup.refn.fs_id, | |
154 | ret); | |
155 | ||
156 | if (ret < 0) { | |
157 | if (ret == -ENOENT) { | |
158 | /* | |
159 | * if no inode was found, add a negative dentry to | |
160 | * dcache anyway; if we don't, we don't hold expected | |
161 | * lookup semantics and we most noticeably break | |
162 | * during directory renames. | |
163 | * | |
164 | * however, if the operation failed or exited, do not | |
165 | * add the dentry (e.g. in the case that a touch is | |
166 | * issued on a file that already exists that was | |
167 | * interrupted during this lookup -- no need to add | |
168 | * another negative dentry for an existing file) | |
169 | */ | |
170 | ||
171 | gossip_debug(GOSSIP_NAME_DEBUG, | |
8bb8aefd | 172 | "orangefs_lookup: Adding *negative* dentry " |
f66debf1 | 173 | "%p for %pd\n", |
274dcf55 | 174 | dentry, |
f66debf1 | 175 | dentry); |
274dcf55 MM |
176 | |
177 | d_add(dentry, NULL); | |
178 | res = NULL; | |
179 | goto out; | |
180 | } | |
181 | ||
182 | /* must be a non-recoverable error */ | |
183 | res = ERR_PTR(ret); | |
184 | goto out; | |
185 | } | |
186 | ||
804b1737 | 187 | orangefs_set_timeout(dentry); |
31b7c1ab | 188 | |
8bb8aefd | 189 | inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn); |
274dcf55 MM |
190 | if (IS_ERR(inode)) { |
191 | gossip_debug(GOSSIP_NAME_DEBUG, | |
192 | "error %ld from iget\n", PTR_ERR(inode)); | |
193 | res = ERR_CAST(inode); | |
194 | goto out; | |
195 | } | |
196 | ||
197 | gossip_debug(GOSSIP_NAME_DEBUG, | |
198 | "%s:%s:%d " | |
199 | "Found good inode [%lu] with count [%d]\n", | |
200 | __FILE__, | |
201 | __func__, | |
202 | __LINE__, | |
203 | inode->i_ino, | |
204 | (int)atomic_read(&inode->i_count)); | |
205 | ||
206 | /* update dentry/inode pair into dcache */ | |
207 | res = d_splice_alias(inode, dentry); | |
208 | ||
209 | gossip_debug(GOSSIP_NAME_DEBUG, | |
210 | "Lookup success (inode ct = %d)\n", | |
211 | (int)atomic_read(&inode->i_count)); | |
212 | out: | |
213 | op_release(new_op); | |
214 | return res; | |
215 | } | |
216 | ||
217 | /* return 0 on success; non-zero otherwise */ | |
8bb8aefd | 218 | static int orangefs_unlink(struct inode *dir, struct dentry *dentry) |
274dcf55 MM |
219 | { |
220 | struct inode *inode = dentry->d_inode; | |
8bb8aefd YL |
221 | struct orangefs_inode_s *parent = ORANGEFS_I(dir); |
222 | struct orangefs_kernel_op_s *new_op; | |
274dcf55 MM |
223 | int ret; |
224 | ||
225 | gossip_debug(GOSSIP_NAME_DEBUG, | |
f66debf1 | 226 | "%s: called on %pd\n" |
274dcf55 MM |
227 | " (inode %pU): Parent is %pU | fs_id %d\n", |
228 | __func__, | |
f66debf1 | 229 | dentry, |
274dcf55 MM |
230 | get_khandle_from_ino(inode), |
231 | &parent->refn.khandle, | |
232 | parent->refn.fs_id); | |
233 | ||
8bb8aefd | 234 | new_op = op_alloc(ORANGEFS_VFS_OP_REMOVE); |
274dcf55 MM |
235 | if (!new_op) |
236 | return -ENOMEM; | |
237 | ||
238 | new_op->upcall.req.remove.parent_refn = parent->refn; | |
239 | strncpy(new_op->upcall.req.remove.d_name, dentry->d_name.name, | |
47b4948f | 240 | ORANGEFS_NAME_MAX); |
274dcf55 | 241 | |
8bb8aefd | 242 | ret = service_operation(new_op, "orangefs_unlink", |
274dcf55 MM |
243 | get_interruptible_flag(inode)); |
244 | ||
5253487e MM |
245 | gossip_debug(GOSSIP_NAME_DEBUG, |
246 | "%s: service_operation returned:%d:\n", | |
247 | __func__, | |
248 | ret); | |
249 | ||
274dcf55 MM |
250 | op_release(new_op); |
251 | ||
252 | if (!ret) { | |
253 | drop_nlink(inode); | |
254 | ||
255 | SetMtimeFlag(parent); | |
c2050a45 | 256 | dir->i_mtime = dir->i_ctime = current_time(dir); |
274dcf55 MM |
257 | mark_inode_dirty_sync(dir); |
258 | } | |
259 | return ret; | |
260 | } | |
261 | ||
8bb8aefd | 262 | static int orangefs_symlink(struct inode *dir, |
274dcf55 MM |
263 | struct dentry *dentry, |
264 | const char *symname) | |
265 | { | |
8bb8aefd YL |
266 | struct orangefs_inode_s *parent = ORANGEFS_I(dir); |
267 | struct orangefs_kernel_op_s *new_op; | |
274dcf55 MM |
268 | struct inode *inode; |
269 | int mode = 755; | |
270 | int ret; | |
271 | ||
272 | gossip_debug(GOSSIP_NAME_DEBUG, "%s: called\n", __func__); | |
273 | ||
274 | if (!symname) | |
275 | return -EINVAL; | |
276 | ||
c62da585 MB |
277 | if (strlen(symname)+1 > ORANGEFS_NAME_MAX) |
278 | return -ENAMETOOLONG; | |
279 | ||
8bb8aefd | 280 | new_op = op_alloc(ORANGEFS_VFS_OP_SYMLINK); |
274dcf55 MM |
281 | if (!new_op) |
282 | return -ENOMEM; | |
283 | ||
284 | new_op->upcall.req.sym.parent_refn = parent->refn; | |
285 | ||
286 | fill_default_sys_attrs(new_op->upcall.req.sym.attributes, | |
8bb8aefd | 287 | ORANGEFS_TYPE_SYMLINK, |
274dcf55 MM |
288 | mode); |
289 | ||
290 | strncpy(new_op->upcall.req.sym.entry_name, | |
291 | dentry->d_name.name, | |
47b4948f MB |
292 | ORANGEFS_NAME_MAX); |
293 | strncpy(new_op->upcall.req.sym.target, symname, ORANGEFS_NAME_MAX); | |
274dcf55 MM |
294 | |
295 | ret = service_operation(new_op, __func__, get_interruptible_flag(dir)); | |
296 | ||
297 | gossip_debug(GOSSIP_NAME_DEBUG, | |
8bb8aefd | 298 | "Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n", |
274dcf55 MM |
299 | &new_op->downcall.resp.sym.refn.khandle, |
300 | new_op->downcall.resp.sym.refn.fs_id, ret); | |
301 | ||
302 | if (ret < 0) { | |
303 | gossip_debug(GOSSIP_NAME_DEBUG, | |
304 | "%s: failed with error code %d\n", | |
305 | __func__, ret); | |
306 | goto out; | |
307 | } | |
308 | ||
8bb8aefd | 309 | inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK | mode, 0, |
274dcf55 MM |
310 | &new_op->downcall.resp.sym.refn); |
311 | if (IS_ERR(inode)) { | |
312 | gossip_err | |
8bb8aefd | 313 | ("*** Failed to allocate orangefs symlink inode\n"); |
274dcf55 MM |
314 | ret = PTR_ERR(inode); |
315 | goto out; | |
316 | } | |
317 | ||
318 | gossip_debug(GOSSIP_NAME_DEBUG, | |
319 | "Assigned symlink inode new number of %pU\n", | |
320 | get_khandle_from_ino(inode)); | |
321 | ||
322 | d_instantiate(dentry, inode); | |
323 | unlock_new_inode(inode); | |
804b1737 | 324 | orangefs_set_timeout(dentry); |
8bbb20a8 | 325 | ORANGEFS_I(inode)->getattr_time = jiffies - 1; |
68a24a6c | 326 | ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS; |
274dcf55 MM |
327 | |
328 | gossip_debug(GOSSIP_NAME_DEBUG, | |
f66debf1 | 329 | "Inode (Symlink) %pU -> %pd\n", |
274dcf55 | 330 | get_khandle_from_ino(inode), |
f66debf1 | 331 | dentry); |
274dcf55 MM |
332 | |
333 | SetMtimeFlag(parent); | |
c2050a45 | 334 | dir->i_mtime = dir->i_ctime = current_time(dir); |
274dcf55 MM |
335 | mark_inode_dirty_sync(dir); |
336 | ret = 0; | |
337 | out: | |
338 | op_release(new_op); | |
339 | return ret; | |
340 | } | |
341 | ||
8bb8aefd | 342 | static int orangefs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
274dcf55 | 343 | { |
8bb8aefd YL |
344 | struct orangefs_inode_s *parent = ORANGEFS_I(dir); |
345 | struct orangefs_kernel_op_s *new_op; | |
274dcf55 MM |
346 | struct inode *inode; |
347 | int ret; | |
348 | ||
8bb8aefd | 349 | new_op = op_alloc(ORANGEFS_VFS_OP_MKDIR); |
274dcf55 MM |
350 | if (!new_op) |
351 | return -ENOMEM; | |
352 | ||
353 | new_op->upcall.req.mkdir.parent_refn = parent->refn; | |
354 | ||
355 | fill_default_sys_attrs(new_op->upcall.req.mkdir.attributes, | |
8bb8aefd | 356 | ORANGEFS_TYPE_DIRECTORY, mode); |
274dcf55 MM |
357 | |
358 | strncpy(new_op->upcall.req.mkdir.d_name, | |
47b4948f | 359 | dentry->d_name.name, ORANGEFS_NAME_MAX); |
274dcf55 MM |
360 | |
361 | ret = service_operation(new_op, __func__, get_interruptible_flag(dir)); | |
362 | ||
363 | gossip_debug(GOSSIP_NAME_DEBUG, | |
8bb8aefd | 364 | "Mkdir Got ORANGEFS handle %pU on fsid %d\n", |
274dcf55 MM |
365 | &new_op->downcall.resp.mkdir.refn.khandle, |
366 | new_op->downcall.resp.mkdir.refn.fs_id); | |
367 | ||
368 | if (ret < 0) { | |
369 | gossip_debug(GOSSIP_NAME_DEBUG, | |
370 | "%s: failed with error code %d\n", | |
371 | __func__, ret); | |
372 | goto out; | |
373 | } | |
374 | ||
8bb8aefd | 375 | inode = orangefs_new_inode(dir->i_sb, dir, S_IFDIR | mode, 0, |
274dcf55 MM |
376 | &new_op->downcall.resp.mkdir.refn); |
377 | if (IS_ERR(inode)) { | |
8bb8aefd | 378 | gossip_err("*** Failed to allocate orangefs dir inode\n"); |
274dcf55 MM |
379 | ret = PTR_ERR(inode); |
380 | goto out; | |
381 | } | |
382 | ||
383 | gossip_debug(GOSSIP_NAME_DEBUG, | |
384 | "Assigned dir inode new number of %pU\n", | |
385 | get_khandle_from_ino(inode)); | |
386 | ||
387 | d_instantiate(dentry, inode); | |
388 | unlock_new_inode(inode); | |
804b1737 | 389 | orangefs_set_timeout(dentry); |
8bbb20a8 | 390 | ORANGEFS_I(inode)->getattr_time = jiffies - 1; |
68a24a6c | 391 | ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS; |
274dcf55 MM |
392 | |
393 | gossip_debug(GOSSIP_NAME_DEBUG, | |
f66debf1 | 394 | "Inode (Directory) %pU -> %pd\n", |
274dcf55 | 395 | get_khandle_from_ino(inode), |
f66debf1 | 396 | dentry); |
274dcf55 MM |
397 | |
398 | /* | |
399 | * NOTE: we have no good way to keep nlink consistent for directories | |
400 | * across clients; keep constant at 1. | |
401 | */ | |
402 | SetMtimeFlag(parent); | |
c2050a45 | 403 | dir->i_mtime = dir->i_ctime = current_time(dir); |
274dcf55 MM |
404 | mark_inode_dirty_sync(dir); |
405 | out: | |
406 | op_release(new_op); | |
407 | return ret; | |
408 | } | |
409 | ||
8bb8aefd | 410 | static int orangefs_rename(struct inode *old_dir, |
274dcf55 MM |
411 | struct dentry *old_dentry, |
412 | struct inode *new_dir, | |
1cd66c93 MS |
413 | struct dentry *new_dentry, |
414 | unsigned int flags) | |
274dcf55 | 415 | { |
8bb8aefd | 416 | struct orangefs_kernel_op_s *new_op; |
274dcf55 MM |
417 | int ret; |
418 | ||
1cd66c93 MS |
419 | if (flags) |
420 | return -EINVAL; | |
421 | ||
274dcf55 | 422 | gossip_debug(GOSSIP_NAME_DEBUG, |
96b0cffb AV |
423 | "orangefs_rename: called (%pd2 => %pd2) ct=%d\n", |
424 | old_dentry, new_dentry, d_count(new_dentry)); | |
274dcf55 | 425 | |
8bbb20a8 | 426 | ORANGEFS_I(new_dentry->d_parent->d_inode)->getattr_time = jiffies - 1; |
71680c18 | 427 | |
8bb8aefd | 428 | new_op = op_alloc(ORANGEFS_VFS_OP_RENAME); |
274dcf55 MM |
429 | if (!new_op) |
430 | return -EINVAL; | |
431 | ||
8bb8aefd YL |
432 | new_op->upcall.req.rename.old_parent_refn = ORANGEFS_I(old_dir)->refn; |
433 | new_op->upcall.req.rename.new_parent_refn = ORANGEFS_I(new_dir)->refn; | |
274dcf55 MM |
434 | |
435 | strncpy(new_op->upcall.req.rename.d_old_name, | |
436 | old_dentry->d_name.name, | |
47b4948f | 437 | ORANGEFS_NAME_MAX); |
274dcf55 MM |
438 | strncpy(new_op->upcall.req.rename.d_new_name, |
439 | new_dentry->d_name.name, | |
47b4948f | 440 | ORANGEFS_NAME_MAX); |
274dcf55 MM |
441 | |
442 | ret = service_operation(new_op, | |
8bb8aefd | 443 | "orangefs_rename", |
274dcf55 MM |
444 | get_interruptible_flag(old_dentry->d_inode)); |
445 | ||
446 | gossip_debug(GOSSIP_NAME_DEBUG, | |
8bb8aefd | 447 | "orangefs_rename: got downcall status %d\n", |
274dcf55 MM |
448 | ret); |
449 | ||
450 | if (new_dentry->d_inode) | |
c2050a45 | 451 | new_dentry->d_inode->i_ctime = current_time(new_dentry->d_inode); |
274dcf55 MM |
452 | |
453 | op_release(new_op); | |
454 | return ret; | |
455 | } | |
456 | ||
8bb8aefd | 457 | /* ORANGEFS implementation of VFS inode operations for directories */ |
6f3fc107 | 458 | const struct inode_operations orangefs_dir_inode_operations = { |
8bb8aefd YL |
459 | .lookup = orangefs_lookup, |
460 | .get_acl = orangefs_get_acl, | |
461 | .set_acl = orangefs_set_acl, | |
462 | .create = orangefs_create, | |
463 | .unlink = orangefs_unlink, | |
464 | .symlink = orangefs_symlink, | |
465 | .mkdir = orangefs_mkdir, | |
466 | .rmdir = orangefs_unlink, | |
467 | .rename = orangefs_rename, | |
468 | .setattr = orangefs_setattr, | |
469 | .getattr = orangefs_getattr, | |
8bb8aefd | 470 | .listxattr = orangefs_listxattr, |
933287da | 471 | .permission = orangefs_permission, |
274dcf55 | 472 | }; |