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;
62 inode = orangefs_new_inode(dir->i_sb, dir, S_IFREG | mode, 0, &ref);
64 gossip_err("%s: Failed to allocate inode for file :%pd:\n",
71 gossip_debug(GOSSIP_NAME_DEBUG,
72 "%s: Assigned inode :%pU: for file :%pd:\n",
74 get_khandle_from_ino(inode),
77 d_instantiate_new(dentry, inode);
78 orangefs_set_timeout(dentry);
80 gossip_debug(GOSSIP_NAME_DEBUG,
81 "%s: dentry instantiated for %pd\n",
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);
92 gossip_debug(GOSSIP_NAME_DEBUG,
93 "%s: %pd: returning %d\n",
101 * Attempt to resolve an object name (dentry->d_name), parent handle, and
102 * fsid into a handle for the object.
104 static struct dentry *orangefs_lookup(struct inode *dir, struct dentry *dentry,
107 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
108 struct orangefs_kernel_op_s *new_op;
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)
120 gossip_debug(GOSSIP_NAME_DEBUG, "%s called on %pd\n",
123 if (dentry->d_name.len > (ORANGEFS_NAME_MAX - 1))
124 return ERR_PTR(-ENAMETOOLONG);
126 new_op = op_alloc(ORANGEFS_VFS_OP_LOOKUP);
128 return ERR_PTR(-ENOMEM);
130 new_op->upcall.req.lookup.sym_follow = ORANGEFS_LOOKUP_LINK_NO_FOLLOW;
132 gossip_debug(GOSSIP_NAME_DEBUG, "%s:%s:%d using parent %pU\n",
136 &parent->refn.khandle);
137 new_op->upcall.req.lookup.parent_refn = parent->refn;
139 strncpy(new_op->upcall.req.lookup.d_name, dentry->d_name.name,
140 ORANGEFS_NAME_MAX - 1);
142 gossip_debug(GOSSIP_NAME_DEBUG,
143 "%s: doing lookup on %s under %pU,%d\n",
145 new_op->upcall.req.lookup.d_name,
146 &new_op->upcall.req.lookup.parent_refn.khandle,
147 new_op->upcall.req.lookup.parent_refn.fs_id);
149 ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
151 gossip_debug(GOSSIP_NAME_DEBUG,
152 "Lookup Got %pU, fsid %d (ret=%d)\n",
153 &new_op->downcall.resp.lookup.refn.khandle,
154 new_op->downcall.resp.lookup.refn.fs_id,
158 orangefs_set_timeout(dentry);
159 inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn);
160 } else if (ret == -ENOENT) {
163 /* must be a non-recoverable error */
164 inode = ERR_PTR(ret);
168 return d_splice_alias(inode, dentry);
171 /* return 0 on success; non-zero otherwise */
172 static int orangefs_unlink(struct inode *dir, struct dentry *dentry)
174 struct inode *inode = dentry->d_inode;
175 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
176 struct orangefs_kernel_op_s *new_op;
180 gossip_debug(GOSSIP_NAME_DEBUG,
181 "%s: called on %pd\n"
182 " (inode %pU): Parent is %pU | fs_id %d\n",
185 get_khandle_from_ino(inode),
186 &parent->refn.khandle,
189 new_op = op_alloc(ORANGEFS_VFS_OP_REMOVE);
193 new_op->upcall.req.remove.parent_refn = parent->refn;
194 strncpy(new_op->upcall.req.remove.d_name, dentry->d_name.name,
195 ORANGEFS_NAME_MAX - 1);
197 ret = service_operation(new_op, "orangefs_unlink",
198 get_interruptible_flag(inode));
200 gossip_debug(GOSSIP_NAME_DEBUG,
201 "%s: service_operation returned:%d:\n",
210 memset(&iattr, 0, sizeof iattr);
211 iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
212 iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
213 __orangefs_setattr(dir, &iattr);
218 static int orangefs_symlink(struct inode *dir,
219 struct dentry *dentry,
222 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
223 struct orangefs_kernel_op_s *new_op;
224 struct orangefs_object_kref ref;
230 gossip_debug(GOSSIP_NAME_DEBUG, "%s: called\n", __func__);
235 if (strlen(symname)+1 > ORANGEFS_NAME_MAX)
236 return -ENAMETOOLONG;
238 new_op = op_alloc(ORANGEFS_VFS_OP_SYMLINK);
242 new_op->upcall.req.sym.parent_refn = parent->refn;
244 fill_default_sys_attrs(new_op->upcall.req.sym.attributes,
245 ORANGEFS_TYPE_SYMLINK,
248 strncpy(new_op->upcall.req.sym.entry_name,
250 ORANGEFS_NAME_MAX - 1);
251 strncpy(new_op->upcall.req.sym.target, symname, ORANGEFS_NAME_MAX - 1);
253 ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
255 gossip_debug(GOSSIP_NAME_DEBUG,
256 "Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
257 &new_op->downcall.resp.sym.refn.khandle,
258 new_op->downcall.resp.sym.refn.fs_id, ret);
261 gossip_debug(GOSSIP_NAME_DEBUG,
262 "%s: failed with error code %d\n",
267 ref = new_op->downcall.resp.sym.refn;
269 inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK | mode, 0, &ref);
272 ("*** Failed to allocate orangefs symlink inode\n");
273 ret = PTR_ERR(inode);
277 * This is necessary because orangefs_inode_getattr will not
278 * re-read symlink size as it is impossible for it to change.
279 * Invalidating the cache does not help. orangefs_new_inode
280 * does not set the correct size (it does not know symname).
282 inode->i_size = strlen(symname);
284 gossip_debug(GOSSIP_NAME_DEBUG,
285 "Assigned symlink inode new number of %pU\n",
286 get_khandle_from_ino(inode));
288 d_instantiate_new(dentry, inode);
289 orangefs_set_timeout(dentry);
291 gossip_debug(GOSSIP_NAME_DEBUG,
292 "Inode (Symlink) %pU -> %pd\n",
293 get_khandle_from_ino(inode),
296 memset(&iattr, 0, sizeof iattr);
297 iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
298 iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
299 __orangefs_setattr(dir, &iattr);
306 static int orangefs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
308 struct orangefs_inode_s *parent = ORANGEFS_I(dir);
309 struct orangefs_kernel_op_s *new_op;
310 struct orangefs_object_kref ref;
315 new_op = op_alloc(ORANGEFS_VFS_OP_MKDIR);
319 new_op->upcall.req.mkdir.parent_refn = parent->refn;
321 fill_default_sys_attrs(new_op->upcall.req.mkdir.attributes,
322 ORANGEFS_TYPE_DIRECTORY, mode);
324 strncpy(new_op->upcall.req.mkdir.d_name,
325 dentry->d_name.name, ORANGEFS_NAME_MAX - 1);
327 ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
329 gossip_debug(GOSSIP_NAME_DEBUG,
330 "Mkdir Got ORANGEFS handle %pU on fsid %d\n",
331 &new_op->downcall.resp.mkdir.refn.khandle,
332 new_op->downcall.resp.mkdir.refn.fs_id);
335 gossip_debug(GOSSIP_NAME_DEBUG,
336 "%s: failed with error code %d\n",
341 ref = new_op->downcall.resp.mkdir.refn;
343 inode = orangefs_new_inode(dir->i_sb, dir, S_IFDIR | mode, 0, &ref);
345 gossip_err("*** Failed to allocate orangefs dir inode\n");
346 ret = PTR_ERR(inode);
350 gossip_debug(GOSSIP_NAME_DEBUG,
351 "Assigned dir inode new number of %pU\n",
352 get_khandle_from_ino(inode));
354 d_instantiate_new(dentry, inode);
355 orangefs_set_timeout(dentry);
357 gossip_debug(GOSSIP_NAME_DEBUG,
358 "Inode (Directory) %pU -> %pd\n",
359 get_khandle_from_ino(inode),
363 * NOTE: we have no good way to keep nlink consistent for directories
364 * across clients; keep constant at 1.
366 memset(&iattr, 0, sizeof iattr);
367 iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
368 iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
369 __orangefs_setattr(dir, &iattr);
375 static int orangefs_rename(struct inode *old_dir,
376 struct dentry *old_dentry,
377 struct inode *new_dir,
378 struct dentry *new_dentry,
381 struct orangefs_kernel_op_s *new_op;
388 gossip_debug(GOSSIP_NAME_DEBUG,
389 "orangefs_rename: called (%pd2 => %pd2) ct=%d\n",
390 old_dentry, new_dentry, d_count(new_dentry));
392 memset(&iattr, 0, sizeof iattr);
393 iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
394 iattr.ia_mtime = iattr.ia_ctime = current_time(new_dir);
395 __orangefs_setattr(new_dir, &iattr);
397 new_op = op_alloc(ORANGEFS_VFS_OP_RENAME);
401 new_op->upcall.req.rename.old_parent_refn = ORANGEFS_I(old_dir)->refn;
402 new_op->upcall.req.rename.new_parent_refn = ORANGEFS_I(new_dir)->refn;
404 strncpy(new_op->upcall.req.rename.d_old_name,
405 old_dentry->d_name.name,
406 ORANGEFS_NAME_MAX - 1);
407 strncpy(new_op->upcall.req.rename.d_new_name,
408 new_dentry->d_name.name,
409 ORANGEFS_NAME_MAX - 1);
411 ret = service_operation(new_op,
413 get_interruptible_flag(old_dentry->d_inode));
415 gossip_debug(GOSSIP_NAME_DEBUG,
416 "orangefs_rename: got downcall status %d\n",
419 if (new_dentry->d_inode)
420 new_dentry->d_inode->i_ctime = current_time(new_dentry->d_inode);
426 /* ORANGEFS implementation of VFS inode operations for directories */
427 const struct inode_operations orangefs_dir_inode_operations = {
428 .lookup = orangefs_lookup,
429 .get_acl = orangefs_get_acl,
430 .set_acl = orangefs_set_acl,
431 .create = orangefs_create,
432 .unlink = orangefs_unlink,
433 .symlink = orangefs_symlink,
434 .mkdir = orangefs_mkdir,
435 .rmdir = orangefs_unlink,
436 .rename = orangefs_rename,
437 .setattr = orangefs_setattr,
438 .getattr = orangefs_getattr,
439 .listxattr = orangefs_listxattr,
440 .permission = orangefs_permission,
441 .update_time = orangefs_update_time,