Commit | Line | Data |
---|---|---|
b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
274dcf55 MM |
2 | /* |
3 | * (C) 2001 Clemson University and The University of Chicago | |
4 | * | |
5 | * See COPYING in top-level directory. | |
6 | */ | |
7 | ||
8 | /* | |
9 | * Linux VFS namei operations. | |
10 | */ | |
11 | ||
12 | #include "protocol.h" | |
575e9461 | 13 | #include "orangefs-kernel.h" |
274dcf55 MM |
14 | |
15 | /* | |
16 | * Get a newly allocated inode to go with a negative dentry. | |
17 | */ | |
8bb8aefd | 18 | static int orangefs_create(struct inode *dir, |
274dcf55 MM |
19 | struct dentry *dentry, |
20 | umode_t mode, | |
21 | bool exclusive) | |
22 | { | |
8bb8aefd YL |
23 | struct orangefs_inode_s *parent = ORANGEFS_I(dir); |
24 | struct orangefs_kernel_op_s *new_op; | |
db0267e7 | 25 | struct orangefs_object_kref ref; |
274dcf55 | 26 | struct inode *inode; |
a55f2d86 | 27 | struct iattr iattr; |
274dcf55 MM |
28 | int ret; |
29 | ||
f66debf1 | 30 | gossip_debug(GOSSIP_NAME_DEBUG, "%s: %pd\n", |
5253487e | 31 | __func__, |
f66debf1 | 32 | dentry); |
274dcf55 | 33 | |
8bb8aefd | 34 | new_op = op_alloc(ORANGEFS_VFS_OP_CREATE); |
274dcf55 MM |
35 | if (!new_op) |
36 | return -ENOMEM; | |
37 | ||
38 | new_op->upcall.req.create.parent_refn = parent->refn; | |
39 | ||
40 | fill_default_sys_attrs(new_op->upcall.req.create.attributes, | |
8bb8aefd | 41 | ORANGEFS_TYPE_METAFILE, mode); |
274dcf55 MM |
42 | |
43 | strncpy(new_op->upcall.req.create.d_name, | |
6bdfb48d | 44 | dentry->d_name.name, ORANGEFS_NAME_MAX - 1); |
274dcf55 MM |
45 | |
46 | ret = service_operation(new_op, __func__, get_interruptible_flag(dir)); | |
47 | ||
48 | gossip_debug(GOSSIP_NAME_DEBUG, | |
f66debf1 | 49 | "%s: %pd: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n", |
5253487e | 50 | __func__, |
f66debf1 | 51 | dentry, |
274dcf55 | 52 | &new_op->downcall.resp.create.refn.khandle, |
5253487e MM |
53 | new_op->downcall.resp.create.refn.fs_id, |
54 | new_op, | |
55 | ret); | |
274dcf55 | 56 | |
5253487e | 57 | if (ret < 0) |
274dcf55 | 58 | goto out; |
274dcf55 | 59 | |
db0267e7 | 60 | ref = new_op->downcall.resp.create.refn; |
db0267e7 MB |
61 | |
62 | inode = orangefs_new_inode(dir->i_sb, dir, S_IFREG | mode, 0, &ref); | |
274dcf55 | 63 | if (IS_ERR(inode)) { |
f66debf1 | 64 | gossip_err("%s: Failed to allocate inode for file :%pd:\n", |
5253487e | 65 | __func__, |
f66debf1 | 66 | dentry); |
274dcf55 MM |
67 | ret = PTR_ERR(inode); |
68 | goto out; | |
69 | } | |
70 | ||
71 | gossip_debug(GOSSIP_NAME_DEBUG, | |
f66debf1 | 72 | "%s: Assigned inode :%pU: for file :%pd:\n", |
5253487e MM |
73 | __func__, |
74 | get_khandle_from_ino(inode), | |
f66debf1 | 75 | dentry); |
274dcf55 | 76 | |
1e2e547a | 77 | d_instantiate_new(dentry, inode); |
804b1737 | 78 | orangefs_set_timeout(dentry); |
8bbb20a8 | 79 | ORANGEFS_I(inode)->getattr_time = jiffies - 1; |
68a24a6c | 80 | ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS; |
274dcf55 MM |
81 | |
82 | gossip_debug(GOSSIP_NAME_DEBUG, | |
f66debf1 | 83 | "%s: dentry instantiated for %pd\n", |
5253487e | 84 | __func__, |
f66debf1 | 85 | dentry); |
274dcf55 | 86 | |
c2050a45 | 87 | dir->i_mtime = dir->i_ctime = current_time(dir); |
a55f2d86 MB |
88 | memset(&iattr, 0, sizeof iattr); |
89 | iattr.ia_valid |= ATTR_MTIME; | |
90 | orangefs_inode_setattr(dir, &iattr); | |
274dcf55 MM |
91 | mark_inode_dirty_sync(dir); |
92 | ret = 0; | |
93 | out: | |
34e6148a | 94 | op_release(new_op); |
5253487e | 95 | gossip_debug(GOSSIP_NAME_DEBUG, |
f66debf1 | 96 | "%s: %pd: returning %d\n", |
5253487e | 97 | __func__, |
f66debf1 | 98 | dentry, |
5253487e | 99 | ret); |
274dcf55 MM |
100 | return ret; |
101 | } | |
102 | ||
103 | /* | |
104 | * Attempt to resolve an object name (dentry->d_name), parent handle, and | |
105 | * fsid into a handle for the object. | |
106 | */ | |
8bb8aefd | 107 | static struct dentry *orangefs_lookup(struct inode *dir, struct dentry *dentry, |
274dcf55 MM |
108 | unsigned int flags) |
109 | { | |
8bb8aefd YL |
110 | struct orangefs_inode_s *parent = ORANGEFS_I(dir); |
111 | struct orangefs_kernel_op_s *new_op; | |
274dcf55 | 112 | struct inode *inode; |
274dcf55 MM |
113 | int ret = -EINVAL; |
114 | ||
115 | /* | |
116 | * in theory we could skip a lookup here (if the intent is to | |
117 | * create) in order to avoid a potentially failed lookup, but | |
118 | * leaving it in can skip a valid lookup and try to create a file | |
119 | * that already exists (e.g. the vfs already handles checking for | |
120 | * -EEXIST on O_EXCL opens, which is broken if we skip this lookup | |
121 | * in the create path) | |
122 | */ | |
f66debf1 AV |
123 | gossip_debug(GOSSIP_NAME_DEBUG, "%s called on %pd\n", |
124 | __func__, dentry); | |
274dcf55 | 125 | |
47b4948f | 126 | if (dentry->d_name.len > (ORANGEFS_NAME_MAX - 1)) |
274dcf55 MM |
127 | return ERR_PTR(-ENAMETOOLONG); |
128 | ||
8bb8aefd | 129 | new_op = op_alloc(ORANGEFS_VFS_OP_LOOKUP); |
274dcf55 MM |
130 | if (!new_op) |
131 | return ERR_PTR(-ENOMEM); | |
132 | ||
7cec28e9 | 133 | new_op->upcall.req.lookup.sym_follow = ORANGEFS_LOOKUP_LINK_NO_FOLLOW; |
274dcf55 MM |
134 | |
135 | gossip_debug(GOSSIP_NAME_DEBUG, "%s:%s:%d using parent %pU\n", | |
136 | __FILE__, | |
137 | __func__, | |
138 | __LINE__, | |
139 | &parent->refn.khandle); | |
140 | new_op->upcall.req.lookup.parent_refn = parent->refn; | |
141 | ||
142 | strncpy(new_op->upcall.req.lookup.d_name, dentry->d_name.name, | |
6bdfb48d | 143 | ORANGEFS_NAME_MAX - 1); |
274dcf55 MM |
144 | |
145 | gossip_debug(GOSSIP_NAME_DEBUG, | |
6ceaf781 | 146 | "%s: doing lookup on %s under %pU,%d\n", |
274dcf55 MM |
147 | __func__, |
148 | new_op->upcall.req.lookup.d_name, | |
149 | &new_op->upcall.req.lookup.parent_refn.khandle, | |
6ceaf781 | 150 | new_op->upcall.req.lookup.parent_refn.fs_id); |
274dcf55 MM |
151 | |
152 | ret = service_operation(new_op, __func__, get_interruptible_flag(dir)); | |
153 | ||
154 | gossip_debug(GOSSIP_NAME_DEBUG, | |
155 | "Lookup Got %pU, fsid %d (ret=%d)\n", | |
156 | &new_op->downcall.resp.lookup.refn.khandle, | |
157 | new_op->downcall.resp.lookup.refn.fs_id, | |
158 | ret); | |
159 | ||
22fc9db2 | 160 | if (ret == 0) { |
04bb1ba1 AV |
161 | orangefs_set_timeout(dentry); |
162 | inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn); | |
163 | } else if (ret == -ENOENT) { | |
164 | inode = NULL; | |
165 | } else { | |
274dcf55 | 166 | /* must be a non-recoverable error */ |
04bb1ba1 | 167 | inode = ERR_PTR(ret); |
274dcf55 MM |
168 | } |
169 | ||
274dcf55 | 170 | op_release(new_op); |
04bb1ba1 | 171 | return d_splice_alias(inode, dentry); |
274dcf55 MM |
172 | } |
173 | ||
174 | /* return 0 on success; non-zero otherwise */ | |
8bb8aefd | 175 | static int orangefs_unlink(struct inode *dir, struct dentry *dentry) |
274dcf55 MM |
176 | { |
177 | struct inode *inode = dentry->d_inode; | |
8bb8aefd YL |
178 | struct orangefs_inode_s *parent = ORANGEFS_I(dir); |
179 | struct orangefs_kernel_op_s *new_op; | |
a55f2d86 | 180 | struct iattr iattr; |
274dcf55 MM |
181 | int ret; |
182 | ||
183 | gossip_debug(GOSSIP_NAME_DEBUG, | |
f66debf1 | 184 | "%s: called on %pd\n" |
274dcf55 MM |
185 | " (inode %pU): Parent is %pU | fs_id %d\n", |
186 | __func__, | |
f66debf1 | 187 | dentry, |
274dcf55 MM |
188 | get_khandle_from_ino(inode), |
189 | &parent->refn.khandle, | |
190 | parent->refn.fs_id); | |
191 | ||
8bb8aefd | 192 | new_op = op_alloc(ORANGEFS_VFS_OP_REMOVE); |
274dcf55 MM |
193 | if (!new_op) |
194 | return -ENOMEM; | |
195 | ||
196 | new_op->upcall.req.remove.parent_refn = parent->refn; | |
197 | strncpy(new_op->upcall.req.remove.d_name, dentry->d_name.name, | |
6bdfb48d | 198 | ORANGEFS_NAME_MAX - 1); |
274dcf55 | 199 | |
8bb8aefd | 200 | ret = service_operation(new_op, "orangefs_unlink", |
274dcf55 MM |
201 | get_interruptible_flag(inode)); |
202 | ||
5253487e MM |
203 | gossip_debug(GOSSIP_NAME_DEBUG, |
204 | "%s: service_operation returned:%d:\n", | |
205 | __func__, | |
206 | ret); | |
207 | ||
274dcf55 MM |
208 | op_release(new_op); |
209 | ||
210 | if (!ret) { | |
211 | drop_nlink(inode); | |
212 | ||
c2050a45 | 213 | dir->i_mtime = dir->i_ctime = current_time(dir); |
a55f2d86 MB |
214 | memset(&iattr, 0, sizeof iattr); |
215 | iattr.ia_valid |= ATTR_MTIME; | |
216 | orangefs_inode_setattr(dir, &iattr); | |
274dcf55 MM |
217 | mark_inode_dirty_sync(dir); |
218 | } | |
219 | return ret; | |
220 | } | |
221 | ||
8bb8aefd | 222 | static int orangefs_symlink(struct inode *dir, |
274dcf55 MM |
223 | struct dentry *dentry, |
224 | const char *symname) | |
225 | { | |
8bb8aefd YL |
226 | struct orangefs_inode_s *parent = ORANGEFS_I(dir); |
227 | struct orangefs_kernel_op_s *new_op; | |
db0267e7 | 228 | struct orangefs_object_kref ref; |
274dcf55 | 229 | struct inode *inode; |
a55f2d86 | 230 | struct iattr iattr; |
274dcf55 MM |
231 | int mode = 755; |
232 | int ret; | |
233 | ||
234 | gossip_debug(GOSSIP_NAME_DEBUG, "%s: called\n", __func__); | |
235 | ||
236 | if (!symname) | |
237 | return -EINVAL; | |
238 | ||
c62da585 MB |
239 | if (strlen(symname)+1 > ORANGEFS_NAME_MAX) |
240 | return -ENAMETOOLONG; | |
241 | ||
8bb8aefd | 242 | new_op = op_alloc(ORANGEFS_VFS_OP_SYMLINK); |
274dcf55 MM |
243 | if (!new_op) |
244 | return -ENOMEM; | |
245 | ||
246 | new_op->upcall.req.sym.parent_refn = parent->refn; | |
247 | ||
248 | fill_default_sys_attrs(new_op->upcall.req.sym.attributes, | |
8bb8aefd | 249 | ORANGEFS_TYPE_SYMLINK, |
274dcf55 MM |
250 | mode); |
251 | ||
252 | strncpy(new_op->upcall.req.sym.entry_name, | |
253 | dentry->d_name.name, | |
6bdfb48d XW |
254 | ORANGEFS_NAME_MAX - 1); |
255 | strncpy(new_op->upcall.req.sym.target, symname, ORANGEFS_NAME_MAX - 1); | |
274dcf55 MM |
256 | |
257 | ret = service_operation(new_op, __func__, get_interruptible_flag(dir)); | |
258 | ||
259 | gossip_debug(GOSSIP_NAME_DEBUG, | |
8bb8aefd | 260 | "Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n", |
274dcf55 MM |
261 | &new_op->downcall.resp.sym.refn.khandle, |
262 | new_op->downcall.resp.sym.refn.fs_id, ret); | |
263 | ||
264 | if (ret < 0) { | |
265 | gossip_debug(GOSSIP_NAME_DEBUG, | |
266 | "%s: failed with error code %d\n", | |
267 | __func__, ret); | |
268 | goto out; | |
269 | } | |
270 | ||
db0267e7 | 271 | ref = new_op->downcall.resp.sym.refn; |
db0267e7 MB |
272 | |
273 | inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK | mode, 0, &ref); | |
274dcf55 MM |
274 | if (IS_ERR(inode)) { |
275 | gossip_err | |
8bb8aefd | 276 | ("*** Failed to allocate orangefs symlink inode\n"); |
274dcf55 MM |
277 | ret = PTR_ERR(inode); |
278 | goto out; | |
279 | } | |
f6a4b4c9 MB |
280 | /* |
281 | * This is necessary because orangefs_inode_getattr will not | |
282 | * re-read symlink size as it is impossible for it to change. | |
283 | * Invalidating the cache does not help. orangefs_new_inode | |
284 | * does not set the correct size (it does not know symname). | |
285 | */ | |
286 | inode->i_size = strlen(symname); | |
274dcf55 MM |
287 | |
288 | gossip_debug(GOSSIP_NAME_DEBUG, | |
289 | "Assigned symlink inode new number of %pU\n", | |
290 | get_khandle_from_ino(inode)); | |
291 | ||
1e2e547a | 292 | d_instantiate_new(dentry, inode); |
804b1737 | 293 | orangefs_set_timeout(dentry); |
8bbb20a8 | 294 | ORANGEFS_I(inode)->getattr_time = jiffies - 1; |
68a24a6c | 295 | ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS; |
274dcf55 MM |
296 | |
297 | gossip_debug(GOSSIP_NAME_DEBUG, | |
f66debf1 | 298 | "Inode (Symlink) %pU -> %pd\n", |
274dcf55 | 299 | get_khandle_from_ino(inode), |
f66debf1 | 300 | dentry); |
274dcf55 | 301 | |
c2050a45 | 302 | dir->i_mtime = dir->i_ctime = current_time(dir); |
a55f2d86 MB |
303 | memset(&iattr, 0, sizeof iattr); |
304 | iattr.ia_valid |= ATTR_MTIME; | |
305 | orangefs_inode_setattr(dir, &iattr); | |
274dcf55 MM |
306 | mark_inode_dirty_sync(dir); |
307 | ret = 0; | |
308 | out: | |
34e6148a | 309 | op_release(new_op); |
274dcf55 MM |
310 | return ret; |
311 | } | |
312 | ||
8bb8aefd | 313 | static int orangefs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
274dcf55 | 314 | { |
8bb8aefd YL |
315 | struct orangefs_inode_s *parent = ORANGEFS_I(dir); |
316 | struct orangefs_kernel_op_s *new_op; | |
db0267e7 | 317 | struct orangefs_object_kref ref; |
274dcf55 | 318 | struct inode *inode; |
a55f2d86 | 319 | struct iattr iattr; |
274dcf55 MM |
320 | int ret; |
321 | ||
8bb8aefd | 322 | new_op = op_alloc(ORANGEFS_VFS_OP_MKDIR); |
274dcf55 MM |
323 | if (!new_op) |
324 | return -ENOMEM; | |
325 | ||
326 | new_op->upcall.req.mkdir.parent_refn = parent->refn; | |
327 | ||
328 | fill_default_sys_attrs(new_op->upcall.req.mkdir.attributes, | |
8bb8aefd | 329 | ORANGEFS_TYPE_DIRECTORY, mode); |
274dcf55 MM |
330 | |
331 | strncpy(new_op->upcall.req.mkdir.d_name, | |
6bdfb48d | 332 | dentry->d_name.name, ORANGEFS_NAME_MAX - 1); |
274dcf55 MM |
333 | |
334 | ret = service_operation(new_op, __func__, get_interruptible_flag(dir)); | |
335 | ||
336 | gossip_debug(GOSSIP_NAME_DEBUG, | |
8bb8aefd | 337 | "Mkdir Got ORANGEFS handle %pU on fsid %d\n", |
274dcf55 MM |
338 | &new_op->downcall.resp.mkdir.refn.khandle, |
339 | new_op->downcall.resp.mkdir.refn.fs_id); | |
340 | ||
341 | if (ret < 0) { | |
342 | gossip_debug(GOSSIP_NAME_DEBUG, | |
343 | "%s: failed with error code %d\n", | |
344 | __func__, ret); | |
345 | goto out; | |
346 | } | |
347 | ||
db0267e7 | 348 | ref = new_op->downcall.resp.mkdir.refn; |
db0267e7 MB |
349 | |
350 | inode = orangefs_new_inode(dir->i_sb, dir, S_IFDIR | mode, 0, &ref); | |
274dcf55 | 351 | if (IS_ERR(inode)) { |
8bb8aefd | 352 | gossip_err("*** Failed to allocate orangefs dir inode\n"); |
274dcf55 MM |
353 | ret = PTR_ERR(inode); |
354 | goto out; | |
355 | } | |
356 | ||
357 | gossip_debug(GOSSIP_NAME_DEBUG, | |
358 | "Assigned dir inode new number of %pU\n", | |
359 | get_khandle_from_ino(inode)); | |
360 | ||
1e2e547a | 361 | d_instantiate_new(dentry, inode); |
804b1737 | 362 | orangefs_set_timeout(dentry); |
8bbb20a8 | 363 | ORANGEFS_I(inode)->getattr_time = jiffies - 1; |
68a24a6c | 364 | ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS; |
274dcf55 MM |
365 | |
366 | gossip_debug(GOSSIP_NAME_DEBUG, | |
f66debf1 | 367 | "Inode (Directory) %pU -> %pd\n", |
274dcf55 | 368 | get_khandle_from_ino(inode), |
f66debf1 | 369 | dentry); |
274dcf55 MM |
370 | |
371 | /* | |
372 | * NOTE: we have no good way to keep nlink consistent for directories | |
373 | * across clients; keep constant at 1. | |
374 | */ | |
c2050a45 | 375 | dir->i_mtime = dir->i_ctime = current_time(dir); |
a55f2d86 MB |
376 | memset(&iattr, 0, sizeof iattr); |
377 | iattr.ia_valid |= ATTR_MTIME; | |
378 | orangefs_inode_setattr(dir, &iattr); | |
274dcf55 MM |
379 | mark_inode_dirty_sync(dir); |
380 | out: | |
34e6148a | 381 | op_release(new_op); |
274dcf55 MM |
382 | return ret; |
383 | } | |
384 | ||
8bb8aefd | 385 | static int orangefs_rename(struct inode *old_dir, |
274dcf55 MM |
386 | struct dentry *old_dentry, |
387 | struct inode *new_dir, | |
1cd66c93 MS |
388 | struct dentry *new_dentry, |
389 | unsigned int flags) | |
274dcf55 | 390 | { |
8bb8aefd | 391 | struct orangefs_kernel_op_s *new_op; |
274dcf55 MM |
392 | int ret; |
393 | ||
1cd66c93 MS |
394 | if (flags) |
395 | return -EINVAL; | |
396 | ||
274dcf55 | 397 | gossip_debug(GOSSIP_NAME_DEBUG, |
96b0cffb AV |
398 | "orangefs_rename: called (%pd2 => %pd2) ct=%d\n", |
399 | old_dentry, new_dentry, d_count(new_dentry)); | |
274dcf55 | 400 | |
8bbb20a8 | 401 | ORANGEFS_I(new_dentry->d_parent->d_inode)->getattr_time = jiffies - 1; |
71680c18 | 402 | |
8bb8aefd | 403 | new_op = op_alloc(ORANGEFS_VFS_OP_RENAME); |
274dcf55 MM |
404 | if (!new_op) |
405 | return -EINVAL; | |
406 | ||
8bb8aefd YL |
407 | new_op->upcall.req.rename.old_parent_refn = ORANGEFS_I(old_dir)->refn; |
408 | new_op->upcall.req.rename.new_parent_refn = ORANGEFS_I(new_dir)->refn; | |
274dcf55 MM |
409 | |
410 | strncpy(new_op->upcall.req.rename.d_old_name, | |
411 | old_dentry->d_name.name, | |
6bdfb48d | 412 | ORANGEFS_NAME_MAX - 1); |
274dcf55 MM |
413 | strncpy(new_op->upcall.req.rename.d_new_name, |
414 | new_dentry->d_name.name, | |
6bdfb48d | 415 | ORANGEFS_NAME_MAX - 1); |
274dcf55 MM |
416 | |
417 | ret = service_operation(new_op, | |
8bb8aefd | 418 | "orangefs_rename", |
274dcf55 MM |
419 | get_interruptible_flag(old_dentry->d_inode)); |
420 | ||
421 | gossip_debug(GOSSIP_NAME_DEBUG, | |
8bb8aefd | 422 | "orangefs_rename: got downcall status %d\n", |
274dcf55 MM |
423 | ret); |
424 | ||
425 | if (new_dentry->d_inode) | |
c2050a45 | 426 | new_dentry->d_inode->i_ctime = current_time(new_dentry->d_inode); |
274dcf55 MM |
427 | |
428 | op_release(new_op); | |
429 | return ret; | |
430 | } | |
431 | ||
8bb8aefd | 432 | /* ORANGEFS implementation of VFS inode operations for directories */ |
6f3fc107 | 433 | const struct inode_operations orangefs_dir_inode_operations = { |
8bb8aefd YL |
434 | .lookup = orangefs_lookup, |
435 | .get_acl = orangefs_get_acl, | |
436 | .set_acl = orangefs_set_acl, | |
437 | .create = orangefs_create, | |
438 | .unlink = orangefs_unlink, | |
439 | .symlink = orangefs_symlink, | |
440 | .mkdir = orangefs_mkdir, | |
441 | .rmdir = orangefs_unlink, | |
442 | .rename = orangefs_rename, | |
443 | .setattr = orangefs_setattr, | |
444 | .getattr = orangefs_getattr, | |
8bb8aefd | 445 | .listxattr = orangefs_listxattr, |
933287da | 446 | .permission = orangefs_permission, |
a55f2d86 | 447 | .update_time = orangefs_update_time, |
274dcf55 | 448 | }; |