2 * (C) 2001 Clemson University and The University of Chicago
4 * See COPYING in top-level directory.
8 * Linux VFS namei operations.
12 #include "orangefs-kernel.h"
15 * Get a newly allocated inode to go with a negative dentry.
17 static int orangefs_create(struct inode
*dir
,
18 struct dentry
*dentry
,
22 struct orangefs_inode_s
*parent
= ORANGEFS_I(dir
);
23 struct orangefs_kernel_op_s
*new_op
;
27 gossip_debug(GOSSIP_NAME_DEBUG
, "%s: %s\n",
31 new_op
= op_alloc(ORANGEFS_VFS_OP_CREATE
);
35 new_op
->upcall
.req
.create
.parent_refn
= parent
->refn
;
37 fill_default_sys_attrs(new_op
->upcall
.req
.create
.attributes
,
38 ORANGEFS_TYPE_METAFILE
, mode
);
40 strncpy(new_op
->upcall
.req
.create
.d_name
,
41 dentry
->d_name
.name
, ORANGEFS_NAME_MAX
);
43 ret
= service_operation(new_op
, __func__
, get_interruptible_flag(dir
));
45 gossip_debug(GOSSIP_NAME_DEBUG
,
46 "%s: %s: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n",
49 &new_op
->downcall
.resp
.create
.refn
.khandle
,
50 new_op
->downcall
.resp
.create
.refn
.fs_id
,
57 inode
= orangefs_new_inode(dir
->i_sb
, dir
, S_IFREG
| mode
, 0,
58 &new_op
->downcall
.resp
.create
.refn
);
60 gossip_err("%s: Failed to allocate inode for file :%s:\n",
67 gossip_debug(GOSSIP_NAME_DEBUG
,
68 "%s: Assigned inode :%pU: for file :%s:\n",
70 get_khandle_from_ino(inode
),
73 d_instantiate(dentry
, inode
);
74 unlock_new_inode(inode
);
75 dentry
->d_time
= jiffies
+ HZ
;
77 gossip_debug(GOSSIP_NAME_DEBUG
,
78 "%s: dentry instantiated for %s\n",
83 dir
->i_mtime
= dir
->i_ctime
= current_fs_time(dir
->i_sb
);
84 mark_inode_dirty_sync(dir
);
88 gossip_debug(GOSSIP_NAME_DEBUG
,
89 "%s: %s: returning %d\n",
97 * Attempt to resolve an object name (dentry->d_name), parent handle, and
98 * fsid into a handle for the object.
100 static struct dentry
*orangefs_lookup(struct inode
*dir
, struct dentry
*dentry
,
103 struct orangefs_inode_s
*parent
= ORANGEFS_I(dir
);
104 struct orangefs_kernel_op_s
*new_op
;
110 * in theory we could skip a lookup here (if the intent is to
111 * create) in order to avoid a potentially failed lookup, but
112 * leaving it in can skip a valid lookup and try to create a file
113 * that already exists (e.g. the vfs already handles checking for
114 * -EEXIST on O_EXCL opens, which is broken if we skip this lookup
115 * in the create path)
117 gossip_debug(GOSSIP_NAME_DEBUG
, "%s called on %s\n",
118 __func__
, dentry
->d_name
.name
);
120 if (dentry
->d_name
.len
> (ORANGEFS_NAME_MAX
- 1))
121 return ERR_PTR(-ENAMETOOLONG
);
123 new_op
= op_alloc(ORANGEFS_VFS_OP_LOOKUP
);
125 return ERR_PTR(-ENOMEM
);
127 new_op
->upcall
.req
.lookup
.sym_follow
= ORANGEFS_LOOKUP_LINK_NO_FOLLOW
;
129 gossip_debug(GOSSIP_NAME_DEBUG
, "%s:%s:%d using parent %pU\n",
133 &parent
->refn
.khandle
);
134 new_op
->upcall
.req
.lookup
.parent_refn
= parent
->refn
;
136 strncpy(new_op
->upcall
.req
.lookup
.d_name
, dentry
->d_name
.name
,
139 gossip_debug(GOSSIP_NAME_DEBUG
,
140 "%s: doing lookup on %s under %pU,%d\n",
142 new_op
->upcall
.req
.lookup
.d_name
,
143 &new_op
->upcall
.req
.lookup
.parent_refn
.khandle
,
144 new_op
->upcall
.req
.lookup
.parent_refn
.fs_id
);
146 ret
= service_operation(new_op
, __func__
, get_interruptible_flag(dir
));
148 gossip_debug(GOSSIP_NAME_DEBUG
,
149 "Lookup Got %pU, fsid %d (ret=%d)\n",
150 &new_op
->downcall
.resp
.lookup
.refn
.khandle
,
151 new_op
->downcall
.resp
.lookup
.refn
.fs_id
,
155 if (ret
== -ENOENT
) {
157 * if no inode was found, add a negative dentry to
158 * dcache anyway; if we don't, we don't hold expected
159 * lookup semantics and we most noticeably break
160 * during directory renames.
162 * however, if the operation failed or exited, do not
163 * add the dentry (e.g. in the case that a touch is
164 * issued on a file that already exists that was
165 * interrupted during this lookup -- no need to add
166 * another negative dentry for an existing file)
169 gossip_debug(GOSSIP_NAME_DEBUG
,
170 "orangefs_lookup: Adding *negative* dentry "
173 dentry
->d_name
.name
);
180 /* must be a non-recoverable error */
185 dentry
->d_time
= jiffies
+ HZ
;
187 inode
= orangefs_iget(dir
->i_sb
, &new_op
->downcall
.resp
.lookup
.refn
);
189 gossip_debug(GOSSIP_NAME_DEBUG
,
190 "error %ld from iget\n", PTR_ERR(inode
));
191 res
= ERR_CAST(inode
);
195 gossip_debug(GOSSIP_NAME_DEBUG
,
197 "Found good inode [%lu] with count [%d]\n",
202 (int)atomic_read(&inode
->i_count
));
204 /* update dentry/inode pair into dcache */
205 res
= d_splice_alias(inode
, dentry
);
207 gossip_debug(GOSSIP_NAME_DEBUG
,
208 "Lookup success (inode ct = %d)\n",
209 (int)atomic_read(&inode
->i_count
));
215 /* return 0 on success; non-zero otherwise */
216 static int orangefs_unlink(struct inode
*dir
, struct dentry
*dentry
)
218 struct inode
*inode
= dentry
->d_inode
;
219 struct orangefs_inode_s
*parent
= ORANGEFS_I(dir
);
220 struct orangefs_kernel_op_s
*new_op
;
223 gossip_debug(GOSSIP_NAME_DEBUG
,
225 " (inode %pU): Parent is %pU | fs_id %d\n",
228 get_khandle_from_ino(inode
),
229 &parent
->refn
.khandle
,
232 new_op
= op_alloc(ORANGEFS_VFS_OP_REMOVE
);
236 new_op
->upcall
.req
.remove
.parent_refn
= parent
->refn
;
237 strncpy(new_op
->upcall
.req
.remove
.d_name
, dentry
->d_name
.name
,
240 ret
= service_operation(new_op
, "orangefs_unlink",
241 get_interruptible_flag(inode
));
243 gossip_debug(GOSSIP_NAME_DEBUG
,
244 "%s: service_operation returned:%d:\n",
253 SetMtimeFlag(parent
);
254 dir
->i_mtime
= dir
->i_ctime
= current_fs_time(dir
->i_sb
);
255 mark_inode_dirty_sync(dir
);
260 static int orangefs_symlink(struct inode
*dir
,
261 struct dentry
*dentry
,
264 struct orangefs_inode_s
*parent
= ORANGEFS_I(dir
);
265 struct orangefs_kernel_op_s
*new_op
;
270 gossip_debug(GOSSIP_NAME_DEBUG
, "%s: called\n", __func__
);
275 if (strlen(symname
)+1 > ORANGEFS_NAME_MAX
)
276 return -ENAMETOOLONG
;
278 new_op
= op_alloc(ORANGEFS_VFS_OP_SYMLINK
);
282 new_op
->upcall
.req
.sym
.parent_refn
= parent
->refn
;
284 fill_default_sys_attrs(new_op
->upcall
.req
.sym
.attributes
,
285 ORANGEFS_TYPE_SYMLINK
,
288 strncpy(new_op
->upcall
.req
.sym
.entry_name
,
291 strncpy(new_op
->upcall
.req
.sym
.target
, symname
, ORANGEFS_NAME_MAX
);
293 ret
= service_operation(new_op
, __func__
, get_interruptible_flag(dir
));
295 gossip_debug(GOSSIP_NAME_DEBUG
,
296 "Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
297 &new_op
->downcall
.resp
.sym
.refn
.khandle
,
298 new_op
->downcall
.resp
.sym
.refn
.fs_id
, ret
);
301 gossip_debug(GOSSIP_NAME_DEBUG
,
302 "%s: failed with error code %d\n",
307 inode
= orangefs_new_inode(dir
->i_sb
, dir
, S_IFLNK
| mode
, 0,
308 &new_op
->downcall
.resp
.sym
.refn
);
311 ("*** Failed to allocate orangefs symlink inode\n");
312 ret
= PTR_ERR(inode
);
316 gossip_debug(GOSSIP_NAME_DEBUG
,
317 "Assigned symlink inode new number of %pU\n",
318 get_khandle_from_ino(inode
));
320 d_instantiate(dentry
, inode
);
321 unlock_new_inode(inode
);
322 dentry
->d_time
= jiffies
+ HZ
;
324 gossip_debug(GOSSIP_NAME_DEBUG
,
325 "Inode (Symlink) %pU -> %s\n",
326 get_khandle_from_ino(inode
),
327 dentry
->d_name
.name
);
329 SetMtimeFlag(parent
);
330 dir
->i_mtime
= dir
->i_ctime
= current_fs_time(dir
->i_sb
);
331 mark_inode_dirty_sync(dir
);
338 static int orangefs_mkdir(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
340 struct orangefs_inode_s
*parent
= ORANGEFS_I(dir
);
341 struct orangefs_kernel_op_s
*new_op
;
345 new_op
= op_alloc(ORANGEFS_VFS_OP_MKDIR
);
349 new_op
->upcall
.req
.mkdir
.parent_refn
= parent
->refn
;
351 fill_default_sys_attrs(new_op
->upcall
.req
.mkdir
.attributes
,
352 ORANGEFS_TYPE_DIRECTORY
, mode
);
354 strncpy(new_op
->upcall
.req
.mkdir
.d_name
,
355 dentry
->d_name
.name
, ORANGEFS_NAME_MAX
);
357 ret
= service_operation(new_op
, __func__
, get_interruptible_flag(dir
));
359 gossip_debug(GOSSIP_NAME_DEBUG
,
360 "Mkdir Got ORANGEFS handle %pU on fsid %d\n",
361 &new_op
->downcall
.resp
.mkdir
.refn
.khandle
,
362 new_op
->downcall
.resp
.mkdir
.refn
.fs_id
);
365 gossip_debug(GOSSIP_NAME_DEBUG
,
366 "%s: failed with error code %d\n",
371 inode
= orangefs_new_inode(dir
->i_sb
, dir
, S_IFDIR
| mode
, 0,
372 &new_op
->downcall
.resp
.mkdir
.refn
);
374 gossip_err("*** Failed to allocate orangefs dir inode\n");
375 ret
= PTR_ERR(inode
);
379 gossip_debug(GOSSIP_NAME_DEBUG
,
380 "Assigned dir inode new number of %pU\n",
381 get_khandle_from_ino(inode
));
383 d_instantiate(dentry
, inode
);
384 unlock_new_inode(inode
);
385 dentry
->d_time
= jiffies
+ HZ
;
387 gossip_debug(GOSSIP_NAME_DEBUG
,
388 "Inode (Directory) %pU -> %s\n",
389 get_khandle_from_ino(inode
),
390 dentry
->d_name
.name
);
393 * NOTE: we have no good way to keep nlink consistent for directories
394 * across clients; keep constant at 1.
396 SetMtimeFlag(parent
);
397 dir
->i_mtime
= dir
->i_ctime
= current_fs_time(dir
->i_sb
);
398 mark_inode_dirty_sync(dir
);
404 static int orangefs_rename(struct inode
*old_dir
,
405 struct dentry
*old_dentry
,
406 struct inode
*new_dir
,
407 struct dentry
*new_dentry
)
409 struct orangefs_kernel_op_s
*new_op
;
412 gossip_debug(GOSSIP_NAME_DEBUG
,
413 "orangefs_rename: called (%pd2 => %pd2) ct=%d\n",
414 old_dentry
, new_dentry
, d_count(new_dentry
));
416 new_op
= op_alloc(ORANGEFS_VFS_OP_RENAME
);
420 new_op
->upcall
.req
.rename
.old_parent_refn
= ORANGEFS_I(old_dir
)->refn
;
421 new_op
->upcall
.req
.rename
.new_parent_refn
= ORANGEFS_I(new_dir
)->refn
;
423 strncpy(new_op
->upcall
.req
.rename
.d_old_name
,
424 old_dentry
->d_name
.name
,
426 strncpy(new_op
->upcall
.req
.rename
.d_new_name
,
427 new_dentry
->d_name
.name
,
430 ret
= service_operation(new_op
,
432 get_interruptible_flag(old_dentry
->d_inode
));
434 gossip_debug(GOSSIP_NAME_DEBUG
,
435 "orangefs_rename: got downcall status %d\n",
438 if (new_dentry
->d_inode
)
439 new_dentry
->d_inode
->i_ctime
= CURRENT_TIME
;
445 /* ORANGEFS implementation of VFS inode operations for directories */
446 const struct inode_operations orangefs_dir_inode_operations
= {
447 .lookup
= orangefs_lookup
,
448 .get_acl
= orangefs_get_acl
,
449 .set_acl
= orangefs_set_acl
,
450 .create
= orangefs_create
,
451 .unlink
= orangefs_unlink
,
452 .symlink
= orangefs_symlink
,
453 .mkdir
= orangefs_mkdir
,
454 .rmdir
= orangefs_unlink
,
455 .rename
= orangefs_rename
,
456 .setattr
= orangefs_setattr
,
457 .getattr
= orangefs_getattr
,
458 .setxattr
= generic_setxattr
,
459 .getxattr
= generic_getxattr
,
460 .removexattr
= generic_removexattr
,
461 .listxattr
= orangefs_listxattr
,
462 .permission
= orangefs_permission
,