1 // SPDX-License-Identifier: GPL-2.0
3 * (C) 2001 Clemson University and The University of Chicago
5 * See COPYING in top-level directory.
9 * Linux VFS namei operations.
13 #include "orangefs-kernel.h"
16 * Get a newly allocated inode to go with a negative dentry.
18 static int orangefs_create(struct inode *dir,
19 struct dentry *dentry,
23 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
24 struct orangefs_kernel_op_s *new_op;
25 struct orangefs_object_kref ref;
30 gossip_debug(GOSSIP_NAME_DEBUG, "%s: %pd\n",
34 new_op = op_alloc(ORANGEFS_VFS_OP_CREATE);
38 new_op->upcall.req.create.parent_refn = parent->refn;
40 fill_default_sys_attrs(new_op->upcall.req.create.attributes,
41 ORANGEFS_TYPE_METAFILE, mode);
43 strncpy(new_op->upcall.req.create.d_name,
44 dentry->d_name.name, ORANGEFS_NAME_MAX - 1);
46 ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
48 gossip_debug(GOSSIP_NAME_DEBUG,
49 "%s: %pd: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n",
52 &new_op->downcall.resp.create.refn.khandle,
53 new_op->downcall.resp.create.refn.fs_id,
60 ref = new_op->downcall.resp.create.refn;
63 inode = orangefs_new_inode(dir->i_sb, dir, S_IFREG | mode, 0, &ref);
65 gossip_err("%s: Failed to allocate inode for file :%pd:\n",
72 gossip_debug(GOSSIP_NAME_DEBUG,
73 "%s: Assigned inode :%pU: for file :%pd:\n",
75 get_khandle_from_ino(inode),
78 d_instantiate(dentry, inode);
79 unlock_new_inode(inode);
80 orangefs_set_timeout(dentry);
81 ORANGEFS_I(inode)->getattr_time = jiffies - 1;
82 ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;
84 gossip_debug(GOSSIP_NAME_DEBUG,
85 "%s: dentry instantiated for %pd\n",
89 dir->i_mtime = dir->i_ctime = current_time(dir);
90 memset(&iattr, 0, sizeof iattr);
91 iattr.ia_valid |= ATTR_MTIME;
92 orangefs_inode_setattr(dir, &iattr);
93 mark_inode_dirty_sync(dir);
96 gossip_debug(GOSSIP_NAME_DEBUG,
97 "%s: %pd: returning %d\n",
105 * Attempt to resolve an object name (dentry->d_name), parent handle, and
106 * fsid into a handle for the object.
108 static struct dentry *orangefs_lookup(struct inode *dir, struct dentry *dentry,
111 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
112 struct orangefs_kernel_op_s *new_op;
118 * in theory we could skip a lookup here (if the intent is to
119 * create) in order to avoid a potentially failed lookup, but
120 * leaving it in can skip a valid lookup and try to create a file
121 * that already exists (e.g. the vfs already handles checking for
122 * -EEXIST on O_EXCL opens, which is broken if we skip this lookup
123 * in the create path)
125 gossip_debug(GOSSIP_NAME_DEBUG, "%s called on %pd\n",
128 if (dentry->d_name.len > (ORANGEFS_NAME_MAX - 1))
129 return ERR_PTR(-ENAMETOOLONG);
131 new_op = op_alloc(ORANGEFS_VFS_OP_LOOKUP);
133 return ERR_PTR(-ENOMEM);
135 new_op->upcall.req.lookup.sym_follow = ORANGEFS_LOOKUP_LINK_NO_FOLLOW;
137 gossip_debug(GOSSIP_NAME_DEBUG, "%s:%s:%d using parent %pU\n",
141 &parent->refn.khandle);
142 new_op->upcall.req.lookup.parent_refn = parent->refn;
144 strncpy(new_op->upcall.req.lookup.d_name, dentry->d_name.name,
145 ORANGEFS_NAME_MAX - 1);
147 gossip_debug(GOSSIP_NAME_DEBUG,
148 "%s: doing lookup on %s under %pU,%d\n",
150 new_op->upcall.req.lookup.d_name,
151 &new_op->upcall.req.lookup.parent_refn.khandle,
152 new_op->upcall.req.lookup.parent_refn.fs_id);
154 ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
156 gossip_debug(GOSSIP_NAME_DEBUG,
157 "Lookup Got %pU, fsid %d (ret=%d)\n",
158 &new_op->downcall.resp.lookup.refn.khandle,
159 new_op->downcall.resp.lookup.refn.fs_id,
163 if (ret == -ENOENT) {
165 * if no inode was found, add a negative dentry to
166 * dcache anyway; if we don't, we don't hold expected
167 * lookup semantics and we most noticeably break
168 * during directory renames.
170 * however, if the operation failed or exited, do not
171 * add the dentry (e.g. in the case that a touch is
172 * issued on a file that already exists that was
173 * interrupted during this lookup -- no need to add
174 * another negative dentry for an existing file)
177 gossip_debug(GOSSIP_NAME_DEBUG,
178 "orangefs_lookup: Adding *negative* dentry "
188 /* must be a non-recoverable error */
193 orangefs_set_timeout(dentry);
195 inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn);
197 gossip_debug(GOSSIP_NAME_DEBUG,
198 "error %ld from iget\n", PTR_ERR(inode));
199 res = ERR_CAST(inode);
203 gossip_debug(GOSSIP_NAME_DEBUG,
205 "Found good inode [%lu] with count [%d]\n",
210 (int)atomic_read(&inode->i_count));
212 /* update dentry/inode pair into dcache */
213 res = d_splice_alias(inode, dentry);
215 gossip_debug(GOSSIP_NAME_DEBUG,
216 "Lookup success (inode ct = %d)\n",
217 (int)atomic_read(&inode->i_count));
223 /* return 0 on success; non-zero otherwise */
224 static int orangefs_unlink(struct inode *dir, struct dentry *dentry)
226 struct inode *inode = dentry->d_inode;
227 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
228 struct orangefs_kernel_op_s *new_op;
232 gossip_debug(GOSSIP_NAME_DEBUG,
233 "%s: called on %pd\n"
234 " (inode %pU): Parent is %pU | fs_id %d\n",
237 get_khandle_from_ino(inode),
238 &parent->refn.khandle,
241 new_op = op_alloc(ORANGEFS_VFS_OP_REMOVE);
245 new_op->upcall.req.remove.parent_refn = parent->refn;
246 strncpy(new_op->upcall.req.remove.d_name, dentry->d_name.name,
247 ORANGEFS_NAME_MAX - 1);
249 ret = service_operation(new_op, "orangefs_unlink",
250 get_interruptible_flag(inode));
252 gossip_debug(GOSSIP_NAME_DEBUG,
253 "%s: service_operation returned:%d:\n",
262 dir->i_mtime = dir->i_ctime = current_time(dir);
263 memset(&iattr, 0, sizeof iattr);
264 iattr.ia_valid |= ATTR_MTIME;
265 orangefs_inode_setattr(dir, &iattr);
266 mark_inode_dirty_sync(dir);
271 static int orangefs_symlink(struct inode *dir,
272 struct dentry *dentry,
275 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
276 struct orangefs_kernel_op_s *new_op;
277 struct orangefs_object_kref ref;
283 gossip_debug(GOSSIP_NAME_DEBUG, "%s: called\n", __func__);
288 if (strlen(symname)+1 > ORANGEFS_NAME_MAX)
289 return -ENAMETOOLONG;
291 new_op = op_alloc(ORANGEFS_VFS_OP_SYMLINK);
295 new_op->upcall.req.sym.parent_refn = parent->refn;
297 fill_default_sys_attrs(new_op->upcall.req.sym.attributes,
298 ORANGEFS_TYPE_SYMLINK,
301 strncpy(new_op->upcall.req.sym.entry_name,
303 ORANGEFS_NAME_MAX - 1);
304 strncpy(new_op->upcall.req.sym.target, symname, ORANGEFS_NAME_MAX - 1);
306 ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
308 gossip_debug(GOSSIP_NAME_DEBUG,
309 "Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
310 &new_op->downcall.resp.sym.refn.khandle,
311 new_op->downcall.resp.sym.refn.fs_id, ret);
314 gossip_debug(GOSSIP_NAME_DEBUG,
315 "%s: failed with error code %d\n",
320 ref = new_op->downcall.resp.sym.refn;
323 inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK | mode, 0, &ref);
326 ("*** Failed to allocate orangefs symlink inode\n");
327 ret = PTR_ERR(inode);
331 gossip_debug(GOSSIP_NAME_DEBUG,
332 "Assigned symlink inode new number of %pU\n",
333 get_khandle_from_ino(inode));
335 d_instantiate(dentry, inode);
336 unlock_new_inode(inode);
337 orangefs_set_timeout(dentry);
338 ORANGEFS_I(inode)->getattr_time = jiffies - 1;
339 ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;
341 gossip_debug(GOSSIP_NAME_DEBUG,
342 "Inode (Symlink) %pU -> %pd\n",
343 get_khandle_from_ino(inode),
346 dir->i_mtime = dir->i_ctime = current_time(dir);
347 memset(&iattr, 0, sizeof iattr);
348 iattr.ia_valid |= ATTR_MTIME;
349 orangefs_inode_setattr(dir, &iattr);
350 mark_inode_dirty_sync(dir);
356 static int orangefs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
358 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
359 struct orangefs_kernel_op_s *new_op;
360 struct orangefs_object_kref ref;
365 new_op = op_alloc(ORANGEFS_VFS_OP_MKDIR);
369 new_op->upcall.req.mkdir.parent_refn = parent->refn;
371 fill_default_sys_attrs(new_op->upcall.req.mkdir.attributes,
372 ORANGEFS_TYPE_DIRECTORY, mode);
374 strncpy(new_op->upcall.req.mkdir.d_name,
375 dentry->d_name.name, ORANGEFS_NAME_MAX - 1);
377 ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
379 gossip_debug(GOSSIP_NAME_DEBUG,
380 "Mkdir Got ORANGEFS handle %pU on fsid %d\n",
381 &new_op->downcall.resp.mkdir.refn.khandle,
382 new_op->downcall.resp.mkdir.refn.fs_id);
385 gossip_debug(GOSSIP_NAME_DEBUG,
386 "%s: failed with error code %d\n",
391 ref = new_op->downcall.resp.mkdir.refn;
394 inode = orangefs_new_inode(dir->i_sb, dir, S_IFDIR | mode, 0, &ref);
396 gossip_err("*** Failed to allocate orangefs dir inode\n");
397 ret = PTR_ERR(inode);
401 gossip_debug(GOSSIP_NAME_DEBUG,
402 "Assigned dir inode new number of %pU\n",
403 get_khandle_from_ino(inode));
405 d_instantiate(dentry, inode);
406 unlock_new_inode(inode);
407 orangefs_set_timeout(dentry);
408 ORANGEFS_I(inode)->getattr_time = jiffies - 1;
409 ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;
411 gossip_debug(GOSSIP_NAME_DEBUG,
412 "Inode (Directory) %pU -> %pd\n",
413 get_khandle_from_ino(inode),
417 * NOTE: we have no good way to keep nlink consistent for directories
418 * across clients; keep constant at 1.
420 dir->i_mtime = dir->i_ctime = current_time(dir);
421 memset(&iattr, 0, sizeof iattr);
422 iattr.ia_valid |= ATTR_MTIME;
423 orangefs_inode_setattr(dir, &iattr);
424 mark_inode_dirty_sync(dir);
429 static int orangefs_rename(struct inode *old_dir,
430 struct dentry *old_dentry,
431 struct inode *new_dir,
432 struct dentry *new_dentry,
435 struct orangefs_kernel_op_s *new_op;
441 gossip_debug(GOSSIP_NAME_DEBUG,
442 "orangefs_rename: called (%pd2 => %pd2) ct=%d\n",
443 old_dentry, new_dentry, d_count(new_dentry));
445 ORANGEFS_I(new_dentry->d_parent->d_inode)->getattr_time = jiffies - 1;
447 new_op = op_alloc(ORANGEFS_VFS_OP_RENAME);
451 new_op->upcall.req.rename.old_parent_refn = ORANGEFS_I(old_dir)->refn;
452 new_op->upcall.req.rename.new_parent_refn = ORANGEFS_I(new_dir)->refn;
454 strncpy(new_op->upcall.req.rename.d_old_name,
455 old_dentry->d_name.name,
456 ORANGEFS_NAME_MAX - 1);
457 strncpy(new_op->upcall.req.rename.d_new_name,
458 new_dentry->d_name.name,
459 ORANGEFS_NAME_MAX - 1);
461 ret = service_operation(new_op,
463 get_interruptible_flag(old_dentry->d_inode));
465 gossip_debug(GOSSIP_NAME_DEBUG,
466 "orangefs_rename: got downcall status %d\n",
469 if (new_dentry->d_inode)
470 new_dentry->d_inode->i_ctime = current_time(new_dentry->d_inode);
476 /* ORANGEFS implementation of VFS inode operations for directories */
477 const struct inode_operations orangefs_dir_inode_operations = {
478 .lookup = orangefs_lookup,
479 .get_acl = orangefs_get_acl,
480 .set_acl = orangefs_set_acl,
481 .create = orangefs_create,
482 .unlink = orangefs_unlink,
483 .symlink = orangefs_symlink,
484 .mkdir = orangefs_mkdir,
485 .rmdir = orangefs_unlink,
486 .rename = orangefs_rename,
487 .setattr = orangefs_setattr,
488 .getattr = orangefs_getattr,
489 .listxattr = orangefs_listxattr,
490 .permission = orangefs_permission,
491 .update_time = orangefs_update_time,