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1// SPDX-License-Identifier: GPL-2.0
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"
13#include "orangefs-kernel.h"
14
15/*
16 * Get a newly allocated inode to go with a negative dentry.
17 */
18static int orangefs_create(struct mnt_idmap *idmap,
19 struct inode *dir,
20 struct dentry *dentry,
21 umode_t mode,
22 bool exclusive)
23{
24 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
25 struct orangefs_kernel_op_s *new_op;
26 struct orangefs_object_kref ref;
27 struct inode *inode;
28 struct iattr iattr;
29 int ret;
30
31 gossip_debug(GOSSIP_NAME_DEBUG, "%s: %pd\n",
32 __func__,
33 dentry);
34
35 new_op = op_alloc(ORANGEFS_VFS_OP_CREATE);
36 if (!new_op)
37 return -ENOMEM;
38
39 new_op->upcall.req.create.parent_refn = parent->refn;
40
41 fill_default_sys_attrs(new_op->upcall.req.create.attributes,
42 ORANGEFS_TYPE_METAFILE, mode);
43
44 strscpy(new_op->upcall.req.create.d_name, dentry->d_name.name);
45
46 ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
47
48 gossip_debug(GOSSIP_NAME_DEBUG,
49 "%s: %pd: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n",
50 __func__,
51 dentry,
52 &new_op->downcall.resp.create.refn.khandle,
53 new_op->downcall.resp.create.refn.fs_id,
54 new_op,
55 ret);
56
57 if (ret < 0)
58 goto out;
59
60 ref = new_op->downcall.resp.create.refn;
61
62 inode = orangefs_new_inode(dir->i_sb, dir, S_IFREG | mode, 0, &ref);
63 if (IS_ERR(inode)) {
64 gossip_err("%s: Failed to allocate inode for file :%pd:\n",
65 __func__,
66 dentry);
67 ret = PTR_ERR(inode);
68 goto out;
69 }
70
71 gossip_debug(GOSSIP_NAME_DEBUG,
72 "%s: Assigned inode :%pU: for file :%pd:\n",
73 __func__,
74 get_khandle_from_ino(inode),
75 dentry);
76
77 d_instantiate_new(dentry, inode);
78 orangefs_set_timeout(dentry);
79
80 gossip_debug(GOSSIP_NAME_DEBUG,
81 "%s: dentry instantiated for %pd\n",
82 __func__,
83 dentry);
84
85 memset(&iattr, 0, sizeof iattr);
86 iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
87 iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
88 __orangefs_setattr(dir, &iattr);
89 ret = 0;
90out:
91 op_release(new_op);
92 gossip_debug(GOSSIP_NAME_DEBUG,
93 "%s: %pd: returning %d\n",
94 __func__,
95 dentry,
96 ret);
97 return ret;
98}
99
100/*
101 * Attempt to resolve an object name (dentry->d_name), parent handle, and
102 * fsid into a handle for the object.
103 */
104static struct dentry *orangefs_lookup(struct inode *dir, struct dentry *dentry,
105 unsigned int flags)
106{
107 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
108 struct orangefs_kernel_op_s *new_op;
109 struct inode *inode;
110 int ret = -EINVAL;
111
112 /*
113 * in theory we could skip a lookup here (if the intent is to
114 * create) in order to avoid a potentially failed lookup, but
115 * leaving it in can skip a valid lookup and try to create a file
116 * that already exists (e.g. the vfs already handles checking for
117 * -EEXIST on O_EXCL opens, which is broken if we skip this lookup
118 * in the create path)
119 */
120 gossip_debug(GOSSIP_NAME_DEBUG, "%s called on %pd\n",
121 __func__, dentry);
122
123 if (dentry->d_name.len > (ORANGEFS_NAME_MAX - 1))
124 return ERR_PTR(-ENAMETOOLONG);
125
126 new_op = op_alloc(ORANGEFS_VFS_OP_LOOKUP);
127 if (!new_op)
128 return ERR_PTR(-ENOMEM);
129
130 new_op->upcall.req.lookup.sym_follow = ORANGEFS_LOOKUP_LINK_NO_FOLLOW;
131
132 gossip_debug(GOSSIP_NAME_DEBUG, "%s:%s:%d using parent %pU\n",
133 __FILE__,
134 __func__,
135 __LINE__,
136 &parent->refn.khandle);
137 new_op->upcall.req.lookup.parent_refn = parent->refn;
138
139 strscpy(new_op->upcall.req.lookup.d_name, dentry->d_name.name);
140
141 gossip_debug(GOSSIP_NAME_DEBUG,
142 "%s: doing lookup on %s under %pU,%d\n",
143 __func__,
144 new_op->upcall.req.lookup.d_name,
145 &new_op->upcall.req.lookup.parent_refn.khandle,
146 new_op->upcall.req.lookup.parent_refn.fs_id);
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 orangefs_set_timeout(dentry);
158 inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn);
159 } else if (ret == -ENOENT) {
160 inode = NULL;
161 } else {
162 /* must be a non-recoverable error */
163 inode = ERR_PTR(ret);
164 }
165
166 op_release(new_op);
167 return d_splice_alias(inode, dentry);
168}
169
170/* return 0 on success; non-zero otherwise */
171static int orangefs_unlink(struct inode *dir, struct dentry *dentry)
172{
173 struct inode *inode = dentry->d_inode;
174 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
175 struct orangefs_kernel_op_s *new_op;
176 struct iattr iattr;
177 int ret;
178
179 gossip_debug(GOSSIP_NAME_DEBUG,
180 "%s: called on %pd\n"
181 " (inode %pU): Parent is %pU | fs_id %d\n",
182 __func__,
183 dentry,
184 get_khandle_from_ino(inode),
185 &parent->refn.khandle,
186 parent->refn.fs_id);
187
188 new_op = op_alloc(ORANGEFS_VFS_OP_REMOVE);
189 if (!new_op)
190 return -ENOMEM;
191
192 new_op->upcall.req.remove.parent_refn = parent->refn;
193 strscpy(new_op->upcall.req.remove.d_name, dentry->d_name.name);
194
195 ret = service_operation(new_op, "orangefs_unlink",
196 get_interruptible_flag(inode));
197
198 gossip_debug(GOSSIP_NAME_DEBUG,
199 "%s: service_operation returned:%d:\n",
200 __func__,
201 ret);
202
203 op_release(new_op);
204
205 if (!ret) {
206 drop_nlink(inode);
207
208 memset(&iattr, 0, sizeof iattr);
209 iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
210 iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
211 __orangefs_setattr(dir, &iattr);
212 }
213 return ret;
214}
215
216static int orangefs_symlink(struct mnt_idmap *idmap,
217 struct inode *dir,
218 struct dentry *dentry,
219 const char *symname)
220{
221 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
222 struct orangefs_kernel_op_s *new_op;
223 struct orangefs_object_kref ref;
224 struct inode *inode;
225 struct iattr iattr;
226 int mode = 0755;
227 int ret;
228
229 gossip_debug(GOSSIP_NAME_DEBUG, "%s: called\n", __func__);
230
231 if (!symname)
232 return -EINVAL;
233
234 if (strlen(symname)+1 > ORANGEFS_NAME_MAX)
235 return -ENAMETOOLONG;
236
237 new_op = op_alloc(ORANGEFS_VFS_OP_SYMLINK);
238 if (!new_op)
239 return -ENOMEM;
240
241 new_op->upcall.req.sym.parent_refn = parent->refn;
242
243 fill_default_sys_attrs(new_op->upcall.req.sym.attributes,
244 ORANGEFS_TYPE_SYMLINK,
245 mode);
246
247 strscpy(new_op->upcall.req.sym.entry_name, dentry->d_name.name);
248 strscpy(new_op->upcall.req.sym.target, symname);
249
250 ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
251
252 gossip_debug(GOSSIP_NAME_DEBUG,
253 "Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
254 &new_op->downcall.resp.sym.refn.khandle,
255 new_op->downcall.resp.sym.refn.fs_id, ret);
256
257 if (ret < 0) {
258 gossip_debug(GOSSIP_NAME_DEBUG,
259 "%s: failed with error code %d\n",
260 __func__, ret);
261 goto out;
262 }
263
264 ref = new_op->downcall.resp.sym.refn;
265
266 inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK | mode, 0, &ref);
267 if (IS_ERR(inode)) {
268 gossip_err
269 ("*** Failed to allocate orangefs symlink inode\n");
270 ret = PTR_ERR(inode);
271 goto out;
272 }
273 /*
274 * This is necessary because orangefs_inode_getattr will not
275 * re-read symlink size as it is impossible for it to change.
276 * Invalidating the cache does not help. orangefs_new_inode
277 * does not set the correct size (it does not know symname).
278 */
279 inode->i_size = strlen(symname);
280
281 gossip_debug(GOSSIP_NAME_DEBUG,
282 "Assigned symlink inode new number of %pU\n",
283 get_khandle_from_ino(inode));
284
285 d_instantiate_new(dentry, inode);
286 orangefs_set_timeout(dentry);
287
288 gossip_debug(GOSSIP_NAME_DEBUG,
289 "Inode (Symlink) %pU -> %pd\n",
290 get_khandle_from_ino(inode),
291 dentry);
292
293 memset(&iattr, 0, sizeof iattr);
294 iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
295 iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
296 __orangefs_setattr(dir, &iattr);
297 ret = 0;
298out:
299 op_release(new_op);
300 return ret;
301}
302
303static int orangefs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
304 struct dentry *dentry, umode_t mode)
305{
306 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
307 struct orangefs_kernel_op_s *new_op;
308 struct orangefs_object_kref ref;
309 struct inode *inode;
310 struct iattr iattr;
311 int ret;
312
313 new_op = op_alloc(ORANGEFS_VFS_OP_MKDIR);
314 if (!new_op)
315 return -ENOMEM;
316
317 new_op->upcall.req.mkdir.parent_refn = parent->refn;
318
319 fill_default_sys_attrs(new_op->upcall.req.mkdir.attributes,
320 ORANGEFS_TYPE_DIRECTORY, mode);
321
322 strscpy(new_op->upcall.req.mkdir.d_name, dentry->d_name.name);
323
324 ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
325
326 gossip_debug(GOSSIP_NAME_DEBUG,
327 "Mkdir Got ORANGEFS handle %pU on fsid %d\n",
328 &new_op->downcall.resp.mkdir.refn.khandle,
329 new_op->downcall.resp.mkdir.refn.fs_id);
330
331 if (ret < 0) {
332 gossip_debug(GOSSIP_NAME_DEBUG,
333 "%s: failed with error code %d\n",
334 __func__, ret);
335 goto out;
336 }
337
338 ref = new_op->downcall.resp.mkdir.refn;
339
340 inode = orangefs_new_inode(dir->i_sb, dir, S_IFDIR | mode, 0, &ref);
341 if (IS_ERR(inode)) {
342 gossip_err("*** Failed to allocate orangefs dir inode\n");
343 ret = PTR_ERR(inode);
344 goto out;
345 }
346
347 gossip_debug(GOSSIP_NAME_DEBUG,
348 "Assigned dir inode new number of %pU\n",
349 get_khandle_from_ino(inode));
350
351 d_instantiate_new(dentry, inode);
352 orangefs_set_timeout(dentry);
353
354 gossip_debug(GOSSIP_NAME_DEBUG,
355 "Inode (Directory) %pU -> %pd\n",
356 get_khandle_from_ino(inode),
357 dentry);
358
359 /*
360 * NOTE: we have no good way to keep nlink consistent for directories
361 * across clients; keep constant at 1.
362 */
363 memset(&iattr, 0, sizeof iattr);
364 iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
365 iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
366 __orangefs_setattr(dir, &iattr);
367out:
368 op_release(new_op);
369 return ret;
370}
371
372static int orangefs_rename(struct mnt_idmap *idmap,
373 struct inode *old_dir,
374 struct dentry *old_dentry,
375 struct inode *new_dir,
376 struct dentry *new_dentry,
377 unsigned int flags)
378{
379 struct orangefs_kernel_op_s *new_op;
380 struct iattr iattr;
381 int ret;
382
383 if (flags)
384 return -EINVAL;
385
386 gossip_debug(GOSSIP_NAME_DEBUG,
387 "orangefs_rename: called (%pd2 => %pd2) ct=%d\n",
388 old_dentry, new_dentry, d_count(new_dentry));
389
390 memset(&iattr, 0, sizeof iattr);
391 iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
392 iattr.ia_mtime = iattr.ia_ctime = current_time(new_dir);
393 __orangefs_setattr(new_dir, &iattr);
394
395 new_op = op_alloc(ORANGEFS_VFS_OP_RENAME);
396 if (!new_op)
397 return -EINVAL;
398
399 new_op->upcall.req.rename.old_parent_refn = ORANGEFS_I(old_dir)->refn;
400 new_op->upcall.req.rename.new_parent_refn = ORANGEFS_I(new_dir)->refn;
401
402 strscpy(new_op->upcall.req.rename.d_old_name, old_dentry->d_name.name);
403 strscpy(new_op->upcall.req.rename.d_new_name, new_dentry->d_name.name);
404
405 ret = service_operation(new_op,
406 "orangefs_rename",
407 get_interruptible_flag(old_dentry->d_inode));
408
409 gossip_debug(GOSSIP_NAME_DEBUG,
410 "orangefs_rename: got downcall status %d\n",
411 ret);
412
413 if (new_dentry->d_inode)
414 inode_set_ctime_current(d_inode(new_dentry));
415
416 op_release(new_op);
417 return ret;
418}
419
420/* ORANGEFS implementation of VFS inode operations for directories */
421const struct inode_operations orangefs_dir_inode_operations = {
422 .lookup = orangefs_lookup,
423 .get_inode_acl = orangefs_get_acl,
424 .set_acl = orangefs_set_acl,
425 .create = orangefs_create,
426 .unlink = orangefs_unlink,
427 .symlink = orangefs_symlink,
428 .mkdir = orangefs_mkdir,
429 .rmdir = orangefs_unlink,
430 .rename = orangefs_rename,
431 .setattr = orangefs_setattr,
432 .getattr = orangefs_getattr,
433 .listxattr = orangefs_listxattr,
434 .permission = orangefs_permission,
435 .update_time = orangefs_update_time,
436};
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"
12#include "orangefs-kernel.h"
13
14/*
15 * Get a newly allocated inode to go with a negative dentry.
16 */
17static int orangefs_create(struct inode *dir,
18 struct dentry *dentry,
19 umode_t mode,
20 bool exclusive)
21{
22 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
23 struct orangefs_kernel_op_s *new_op;
24 struct inode *inode;
25 int ret;
26
27 gossip_debug(GOSSIP_NAME_DEBUG, "%s: %s\n",
28 __func__,
29 dentry->d_name.name);
30
31 new_op = op_alloc(ORANGEFS_VFS_OP_CREATE);
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,
38 ORANGEFS_TYPE_METAFILE, mode);
39
40 strncpy(new_op->upcall.req.create.d_name,
41 dentry->d_name.name, ORANGEFS_NAME_MAX);
42
43 ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
44
45 gossip_debug(GOSSIP_NAME_DEBUG,
46 "%s: %s: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n",
47 __func__,
48 dentry->d_name.name,
49 &new_op->downcall.resp.create.refn.khandle,
50 new_op->downcall.resp.create.refn.fs_id,
51 new_op,
52 ret);
53
54 if (ret < 0)
55 goto out;
56
57 inode = orangefs_new_inode(dir->i_sb, dir, S_IFREG | mode, 0,
58 &new_op->downcall.resp.create.refn);
59 if (IS_ERR(inode)) {
60 gossip_err("%s: Failed to allocate inode for file :%s:\n",
61 __func__,
62 dentry->d_name.name);
63 ret = PTR_ERR(inode);
64 goto out;
65 }
66
67 gossip_debug(GOSSIP_NAME_DEBUG,
68 "%s: Assigned inode :%pU: for file :%s:\n",
69 __func__,
70 get_khandle_from_ino(inode),
71 dentry->d_name.name);
72
73 d_instantiate(dentry, inode);
74 unlock_new_inode(inode);
75
76 gossip_debug(GOSSIP_NAME_DEBUG,
77 "%s: dentry instantiated for %s\n",
78 __func__,
79 dentry->d_name.name);
80
81 SetMtimeFlag(parent);
82 dir->i_mtime = dir->i_ctime = current_fs_time(dir->i_sb);
83 mark_inode_dirty_sync(dir);
84 ret = 0;
85out:
86 op_release(new_op);
87 gossip_debug(GOSSIP_NAME_DEBUG,
88 "%s: %s: returning %d\n",
89 __func__,
90 dentry->d_name.name,
91 ret);
92 return ret;
93}
94
95/*
96 * Attempt to resolve an object name (dentry->d_name), parent handle, and
97 * fsid into a handle for the object.
98 */
99static struct dentry *orangefs_lookup(struct inode *dir, struct dentry *dentry,
100 unsigned int flags)
101{
102 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
103 struct orangefs_kernel_op_s *new_op;
104 struct inode *inode;
105 struct dentry *res;
106 int ret = -EINVAL;
107
108 /*
109 * in theory we could skip a lookup here (if the intent is to
110 * create) in order to avoid a potentially failed lookup, but
111 * leaving it in can skip a valid lookup and try to create a file
112 * that already exists (e.g. the vfs already handles checking for
113 * -EEXIST on O_EXCL opens, which is broken if we skip this lookup
114 * in the create path)
115 */
116 gossip_debug(GOSSIP_NAME_DEBUG, "%s called on %s\n",
117 __func__, dentry->d_name.name);
118
119 if (dentry->d_name.len > (ORANGEFS_NAME_MAX - 1))
120 return ERR_PTR(-ENAMETOOLONG);
121
122 new_op = op_alloc(ORANGEFS_VFS_OP_LOOKUP);
123 if (!new_op)
124 return ERR_PTR(-ENOMEM);
125
126 new_op->upcall.req.lookup.sym_follow = ORANGEFS_LOOKUP_LINK_NO_FOLLOW;
127
128 gossip_debug(GOSSIP_NAME_DEBUG, "%s:%s:%d using parent %pU\n",
129 __FILE__,
130 __func__,
131 __LINE__,
132 &parent->refn.khandle);
133 new_op->upcall.req.lookup.parent_refn = parent->refn;
134
135 strncpy(new_op->upcall.req.lookup.d_name, dentry->d_name.name,
136 ORANGEFS_NAME_MAX);
137
138 gossip_debug(GOSSIP_NAME_DEBUG,
139 "%s: doing lookup on %s under %pU,%d\n",
140 __func__,
141 new_op->upcall.req.lookup.d_name,
142 &new_op->upcall.req.lookup.parent_refn.khandle,
143 new_op->upcall.req.lookup.parent_refn.fs_id);
144
145 ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
146
147 gossip_debug(GOSSIP_NAME_DEBUG,
148 "Lookup Got %pU, fsid %d (ret=%d)\n",
149 &new_op->downcall.resp.lookup.refn.khandle,
150 new_op->downcall.resp.lookup.refn.fs_id,
151 ret);
152
153 if (ret < 0) {
154 if (ret == -ENOENT) {
155 /*
156 * if no inode was found, add a negative dentry to
157 * dcache anyway; if we don't, we don't hold expected
158 * lookup semantics and we most noticeably break
159 * during directory renames.
160 *
161 * however, if the operation failed or exited, do not
162 * add the dentry (e.g. in the case that a touch is
163 * issued on a file that already exists that was
164 * interrupted during this lookup -- no need to add
165 * another negative dentry for an existing file)
166 */
167
168 gossip_debug(GOSSIP_NAME_DEBUG,
169 "orangefs_lookup: Adding *negative* dentry "
170 "%p for %s\n",
171 dentry,
172 dentry->d_name.name);
173
174 d_add(dentry, NULL);
175 res = NULL;
176 goto out;
177 }
178
179 /* must be a non-recoverable error */
180 res = ERR_PTR(ret);
181 goto out;
182 }
183
184 inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn);
185 if (IS_ERR(inode)) {
186 gossip_debug(GOSSIP_NAME_DEBUG,
187 "error %ld from iget\n", PTR_ERR(inode));
188 res = ERR_CAST(inode);
189 goto out;
190 }
191
192 gossip_debug(GOSSIP_NAME_DEBUG,
193 "%s:%s:%d "
194 "Found good inode [%lu] with count [%d]\n",
195 __FILE__,
196 __func__,
197 __LINE__,
198 inode->i_ino,
199 (int)atomic_read(&inode->i_count));
200
201 /* update dentry/inode pair into dcache */
202 res = d_splice_alias(inode, dentry);
203
204 gossip_debug(GOSSIP_NAME_DEBUG,
205 "Lookup success (inode ct = %d)\n",
206 (int)atomic_read(&inode->i_count));
207out:
208 op_release(new_op);
209 return res;
210}
211
212/* return 0 on success; non-zero otherwise */
213static int orangefs_unlink(struct inode *dir, struct dentry *dentry)
214{
215 struct inode *inode = dentry->d_inode;
216 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
217 struct orangefs_kernel_op_s *new_op;
218 int ret;
219
220 gossip_debug(GOSSIP_NAME_DEBUG,
221 "%s: called on %s\n"
222 " (inode %pU): Parent is %pU | fs_id %d\n",
223 __func__,
224 dentry->d_name.name,
225 get_khandle_from_ino(inode),
226 &parent->refn.khandle,
227 parent->refn.fs_id);
228
229 new_op = op_alloc(ORANGEFS_VFS_OP_REMOVE);
230 if (!new_op)
231 return -ENOMEM;
232
233 new_op->upcall.req.remove.parent_refn = parent->refn;
234 strncpy(new_op->upcall.req.remove.d_name, dentry->d_name.name,
235 ORANGEFS_NAME_MAX);
236
237 ret = service_operation(new_op, "orangefs_unlink",
238 get_interruptible_flag(inode));
239
240 gossip_debug(GOSSIP_NAME_DEBUG,
241 "%s: service_operation returned:%d:\n",
242 __func__,
243 ret);
244
245 op_release(new_op);
246
247 if (!ret) {
248 drop_nlink(inode);
249
250 SetMtimeFlag(parent);
251 dir->i_mtime = dir->i_ctime = current_fs_time(dir->i_sb);
252 mark_inode_dirty_sync(dir);
253 }
254 return ret;
255}
256
257static int orangefs_symlink(struct inode *dir,
258 struct dentry *dentry,
259 const char *symname)
260{
261 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
262 struct orangefs_kernel_op_s *new_op;
263 struct inode *inode;
264 int mode = 755;
265 int ret;
266
267 gossip_debug(GOSSIP_NAME_DEBUG, "%s: called\n", __func__);
268
269 if (!symname)
270 return -EINVAL;
271
272 if (strlen(symname)+1 > ORANGEFS_NAME_MAX)
273 return -ENAMETOOLONG;
274
275 new_op = op_alloc(ORANGEFS_VFS_OP_SYMLINK);
276 if (!new_op)
277 return -ENOMEM;
278
279 new_op->upcall.req.sym.parent_refn = parent->refn;
280
281 fill_default_sys_attrs(new_op->upcall.req.sym.attributes,
282 ORANGEFS_TYPE_SYMLINK,
283 mode);
284
285 strncpy(new_op->upcall.req.sym.entry_name,
286 dentry->d_name.name,
287 ORANGEFS_NAME_MAX);
288 strncpy(new_op->upcall.req.sym.target, symname, ORANGEFS_NAME_MAX);
289
290 ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
291
292 gossip_debug(GOSSIP_NAME_DEBUG,
293 "Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
294 &new_op->downcall.resp.sym.refn.khandle,
295 new_op->downcall.resp.sym.refn.fs_id, ret);
296
297 if (ret < 0) {
298 gossip_debug(GOSSIP_NAME_DEBUG,
299 "%s: failed with error code %d\n",
300 __func__, ret);
301 goto out;
302 }
303
304 inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK | mode, 0,
305 &new_op->downcall.resp.sym.refn);
306 if (IS_ERR(inode)) {
307 gossip_err
308 ("*** Failed to allocate orangefs symlink inode\n");
309 ret = PTR_ERR(inode);
310 goto out;
311 }
312
313 gossip_debug(GOSSIP_NAME_DEBUG,
314 "Assigned symlink inode new number of %pU\n",
315 get_khandle_from_ino(inode));
316
317 d_instantiate(dentry, inode);
318 unlock_new_inode(inode);
319
320 gossip_debug(GOSSIP_NAME_DEBUG,
321 "Inode (Symlink) %pU -> %s\n",
322 get_khandle_from_ino(inode),
323 dentry->d_name.name);
324
325 SetMtimeFlag(parent);
326 dir->i_mtime = dir->i_ctime = current_fs_time(dir->i_sb);
327 mark_inode_dirty_sync(dir);
328 ret = 0;
329out:
330 op_release(new_op);
331 return ret;
332}
333
334static int orangefs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
335{
336 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
337 struct orangefs_kernel_op_s *new_op;
338 struct inode *inode;
339 int ret;
340
341 new_op = op_alloc(ORANGEFS_VFS_OP_MKDIR);
342 if (!new_op)
343 return -ENOMEM;
344
345 new_op->upcall.req.mkdir.parent_refn = parent->refn;
346
347 fill_default_sys_attrs(new_op->upcall.req.mkdir.attributes,
348 ORANGEFS_TYPE_DIRECTORY, mode);
349
350 strncpy(new_op->upcall.req.mkdir.d_name,
351 dentry->d_name.name, ORANGEFS_NAME_MAX);
352
353 ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
354
355 gossip_debug(GOSSIP_NAME_DEBUG,
356 "Mkdir Got ORANGEFS handle %pU on fsid %d\n",
357 &new_op->downcall.resp.mkdir.refn.khandle,
358 new_op->downcall.resp.mkdir.refn.fs_id);
359
360 if (ret < 0) {
361 gossip_debug(GOSSIP_NAME_DEBUG,
362 "%s: failed with error code %d\n",
363 __func__, ret);
364 goto out;
365 }
366
367 inode = orangefs_new_inode(dir->i_sb, dir, S_IFDIR | mode, 0,
368 &new_op->downcall.resp.mkdir.refn);
369 if (IS_ERR(inode)) {
370 gossip_err("*** Failed to allocate orangefs dir inode\n");
371 ret = PTR_ERR(inode);
372 goto out;
373 }
374
375 gossip_debug(GOSSIP_NAME_DEBUG,
376 "Assigned dir inode new number of %pU\n",
377 get_khandle_from_ino(inode));
378
379 d_instantiate(dentry, inode);
380 unlock_new_inode(inode);
381
382 gossip_debug(GOSSIP_NAME_DEBUG,
383 "Inode (Directory) %pU -> %s\n",
384 get_khandle_from_ino(inode),
385 dentry->d_name.name);
386
387 /*
388 * NOTE: we have no good way to keep nlink consistent for directories
389 * across clients; keep constant at 1.
390 */
391 SetMtimeFlag(parent);
392 dir->i_mtime = dir->i_ctime = current_fs_time(dir->i_sb);
393 mark_inode_dirty_sync(dir);
394out:
395 op_release(new_op);
396 return ret;
397}
398
399static int orangefs_rename(struct inode *old_dir,
400 struct dentry *old_dentry,
401 struct inode *new_dir,
402 struct dentry *new_dentry)
403{
404 struct orangefs_kernel_op_s *new_op;
405 int ret;
406
407 gossip_debug(GOSSIP_NAME_DEBUG,
408 "orangefs_rename: called (%s/%s => %s/%s) ct=%d\n",
409 old_dentry->d_parent->d_name.name,
410 old_dentry->d_name.name,
411 new_dentry->d_parent->d_name.name,
412 new_dentry->d_name.name,
413 d_count(new_dentry));
414
415 new_op = op_alloc(ORANGEFS_VFS_OP_RENAME);
416 if (!new_op)
417 return -EINVAL;
418
419 new_op->upcall.req.rename.old_parent_refn = ORANGEFS_I(old_dir)->refn;
420 new_op->upcall.req.rename.new_parent_refn = ORANGEFS_I(new_dir)->refn;
421
422 strncpy(new_op->upcall.req.rename.d_old_name,
423 old_dentry->d_name.name,
424 ORANGEFS_NAME_MAX);
425 strncpy(new_op->upcall.req.rename.d_new_name,
426 new_dentry->d_name.name,
427 ORANGEFS_NAME_MAX);
428
429 ret = service_operation(new_op,
430 "orangefs_rename",
431 get_interruptible_flag(old_dentry->d_inode));
432
433 gossip_debug(GOSSIP_NAME_DEBUG,
434 "orangefs_rename: got downcall status %d\n",
435 ret);
436
437 if (new_dentry->d_inode)
438 new_dentry->d_inode->i_ctime = CURRENT_TIME;
439
440 op_release(new_op);
441 return ret;
442}
443
444/* ORANGEFS implementation of VFS inode operations for directories */
445struct inode_operations orangefs_dir_inode_operations = {
446 .lookup = orangefs_lookup,
447 .get_acl = orangefs_get_acl,
448 .set_acl = orangefs_set_acl,
449 .create = orangefs_create,
450 .unlink = orangefs_unlink,
451 .symlink = orangefs_symlink,
452 .mkdir = orangefs_mkdir,
453 .rmdir = orangefs_unlink,
454 .rename = orangefs_rename,
455 .setattr = orangefs_setattr,
456 .getattr = orangefs_getattr,
457 .setxattr = generic_setxattr,
458 .getxattr = generic_getxattr,
459 .removexattr = generic_removexattr,
460 .listxattr = orangefs_listxattr,
461 .permission = orangefs_permission,
462};