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: called\n", __func__
);
29 new_op
= op_alloc(ORANGEFS_VFS_OP_CREATE
);
33 new_op
->upcall
.req
.create
.parent_refn
= parent
->refn
;
35 fill_default_sys_attrs(new_op
->upcall
.req
.create
.attributes
,
36 ORANGEFS_TYPE_METAFILE
, mode
);
38 strncpy(new_op
->upcall
.req
.create
.d_name
,
39 dentry
->d_name
.name
, ORANGEFS_NAME_LEN
);
41 ret
= service_operation(new_op
, __func__
, get_interruptible_flag(dir
));
43 gossip_debug(GOSSIP_NAME_DEBUG
,
44 "Create Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
45 &new_op
->downcall
.resp
.create
.refn
.khandle
,
46 new_op
->downcall
.resp
.create
.refn
.fs_id
, ret
);
49 gossip_debug(GOSSIP_NAME_DEBUG
,
50 "%s: failed with error code %d\n",
55 inode
= orangefs_new_inode(dir
->i_sb
, dir
, S_IFREG
| mode
, 0,
56 &new_op
->downcall
.resp
.create
.refn
);
58 gossip_err("*** Failed to allocate orangefs file inode\n");
63 gossip_debug(GOSSIP_NAME_DEBUG
,
64 "Assigned file inode new number of %pU\n",
65 get_khandle_from_ino(inode
));
67 d_instantiate(dentry
, inode
);
68 unlock_new_inode(inode
);
70 gossip_debug(GOSSIP_NAME_DEBUG
,
71 "Inode (Regular File) %pU -> %s\n",
72 get_khandle_from_ino(inode
),
76 dir
->i_mtime
= dir
->i_ctime
= current_fs_time(dir
->i_sb
);
77 mark_inode_dirty_sync(dir
);
81 gossip_debug(GOSSIP_NAME_DEBUG
, "%s: returning %d\n", __func__
, ret
);
86 * Attempt to resolve an object name (dentry->d_name), parent handle, and
87 * fsid into a handle for the object.
89 static struct dentry
*orangefs_lookup(struct inode
*dir
, struct dentry
*dentry
,
92 struct orangefs_inode_s
*parent
= ORANGEFS_I(dir
);
93 struct orangefs_kernel_op_s
*new_op
;
99 * in theory we could skip a lookup here (if the intent is to
100 * create) in order to avoid a potentially failed lookup, but
101 * leaving it in can skip a valid lookup and try to create a file
102 * that already exists (e.g. the vfs already handles checking for
103 * -EEXIST on O_EXCL opens, which is broken if we skip this lookup
104 * in the create path)
106 gossip_debug(GOSSIP_NAME_DEBUG
, "%s called on %s\n",
107 __func__
, dentry
->d_name
.name
);
109 if (dentry
->d_name
.len
> (ORANGEFS_NAME_LEN
- 1))
110 return ERR_PTR(-ENAMETOOLONG
);
112 new_op
= op_alloc(ORANGEFS_VFS_OP_LOOKUP
);
114 return ERR_PTR(-ENOMEM
);
116 new_op
->upcall
.req
.lookup
.sym_follow
= ORANGEFS_LOOKUP_LINK_NO_FOLLOW
;
118 gossip_debug(GOSSIP_NAME_DEBUG
, "%s:%s:%d using parent %pU\n",
122 &parent
->refn
.khandle
);
123 new_op
->upcall
.req
.lookup
.parent_refn
= parent
->refn
;
125 strncpy(new_op
->upcall
.req
.lookup
.d_name
, dentry
->d_name
.name
,
128 gossip_debug(GOSSIP_NAME_DEBUG
,
129 "%s: doing lookup on %s under %pU,%d (follow=%s)\n",
131 new_op
->upcall
.req
.lookup
.d_name
,
132 &new_op
->upcall
.req
.lookup
.parent_refn
.khandle
,
133 new_op
->upcall
.req
.lookup
.parent_refn
.fs_id
,
134 ((new_op
->upcall
.req
.lookup
.sym_follow
==
135 ORANGEFS_LOOKUP_LINK_FOLLOW
) ? "yes" : "no"));
137 ret
= service_operation(new_op
, __func__
, get_interruptible_flag(dir
));
139 gossip_debug(GOSSIP_NAME_DEBUG
,
140 "Lookup Got %pU, fsid %d (ret=%d)\n",
141 &new_op
->downcall
.resp
.lookup
.refn
.khandle
,
142 new_op
->downcall
.resp
.lookup
.refn
.fs_id
,
146 if (ret
== -ENOENT
) {
148 * if no inode was found, add a negative dentry to
149 * dcache anyway; if we don't, we don't hold expected
150 * lookup semantics and we most noticeably break
151 * during directory renames.
153 * however, if the operation failed or exited, do not
154 * add the dentry (e.g. in the case that a touch is
155 * issued on a file that already exists that was
156 * interrupted during this lookup -- no need to add
157 * another negative dentry for an existing file)
160 gossip_debug(GOSSIP_NAME_DEBUG
,
161 "orangefs_lookup: Adding *negative* dentry "
164 dentry
->d_name
.name
);
171 /* must be a non-recoverable error */
176 inode
= orangefs_iget(dir
->i_sb
, &new_op
->downcall
.resp
.lookup
.refn
);
178 gossip_debug(GOSSIP_NAME_DEBUG
,
179 "error %ld from iget\n", PTR_ERR(inode
));
180 res
= ERR_CAST(inode
);
184 gossip_debug(GOSSIP_NAME_DEBUG
,
186 "Found good inode [%lu] with count [%d]\n",
191 (int)atomic_read(&inode
->i_count
));
193 /* update dentry/inode pair into dcache */
194 res
= d_splice_alias(inode
, dentry
);
196 gossip_debug(GOSSIP_NAME_DEBUG
,
197 "Lookup success (inode ct = %d)\n",
198 (int)atomic_read(&inode
->i_count
));
204 /* return 0 on success; non-zero otherwise */
205 static int orangefs_unlink(struct inode
*dir
, struct dentry
*dentry
)
207 struct inode
*inode
= dentry
->d_inode
;
208 struct orangefs_inode_s
*parent
= ORANGEFS_I(dir
);
209 struct orangefs_kernel_op_s
*new_op
;
212 gossip_debug(GOSSIP_NAME_DEBUG
,
214 " (inode %pU): Parent is %pU | fs_id %d\n",
217 get_khandle_from_ino(inode
),
218 &parent
->refn
.khandle
,
221 new_op
= op_alloc(ORANGEFS_VFS_OP_REMOVE
);
225 new_op
->upcall
.req
.remove
.parent_refn
= parent
->refn
;
226 strncpy(new_op
->upcall
.req
.remove
.d_name
, dentry
->d_name
.name
,
229 ret
= service_operation(new_op
, "orangefs_unlink",
230 get_interruptible_flag(inode
));
232 /* when request is serviced properly, free req op struct */
238 SetMtimeFlag(parent
);
239 dir
->i_mtime
= dir
->i_ctime
= current_fs_time(dir
->i_sb
);
240 mark_inode_dirty_sync(dir
);
245 static int orangefs_symlink(struct inode
*dir
,
246 struct dentry
*dentry
,
249 struct orangefs_inode_s
*parent
= ORANGEFS_I(dir
);
250 struct orangefs_kernel_op_s
*new_op
;
255 gossip_debug(GOSSIP_NAME_DEBUG
, "%s: called\n", __func__
);
260 new_op
= op_alloc(ORANGEFS_VFS_OP_SYMLINK
);
264 new_op
->upcall
.req
.sym
.parent_refn
= parent
->refn
;
266 fill_default_sys_attrs(new_op
->upcall
.req
.sym
.attributes
,
267 ORANGEFS_TYPE_SYMLINK
,
270 strncpy(new_op
->upcall
.req
.sym
.entry_name
,
273 strncpy(new_op
->upcall
.req
.sym
.target
, symname
, ORANGEFS_NAME_LEN
);
275 ret
= service_operation(new_op
, __func__
, get_interruptible_flag(dir
));
277 gossip_debug(GOSSIP_NAME_DEBUG
,
278 "Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
279 &new_op
->downcall
.resp
.sym
.refn
.khandle
,
280 new_op
->downcall
.resp
.sym
.refn
.fs_id
, ret
);
283 gossip_debug(GOSSIP_NAME_DEBUG
,
284 "%s: failed with error code %d\n",
289 inode
= orangefs_new_inode(dir
->i_sb
, dir
, S_IFLNK
| mode
, 0,
290 &new_op
->downcall
.resp
.sym
.refn
);
293 ("*** Failed to allocate orangefs symlink inode\n");
294 ret
= PTR_ERR(inode
);
298 gossip_debug(GOSSIP_NAME_DEBUG
,
299 "Assigned symlink inode new number of %pU\n",
300 get_khandle_from_ino(inode
));
302 d_instantiate(dentry
, inode
);
303 unlock_new_inode(inode
);
305 gossip_debug(GOSSIP_NAME_DEBUG
,
306 "Inode (Symlink) %pU -> %s\n",
307 get_khandle_from_ino(inode
),
308 dentry
->d_name
.name
);
310 SetMtimeFlag(parent
);
311 dir
->i_mtime
= dir
->i_ctime
= current_fs_time(dir
->i_sb
);
312 mark_inode_dirty_sync(dir
);
319 static int orangefs_mkdir(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
321 struct orangefs_inode_s
*parent
= ORANGEFS_I(dir
);
322 struct orangefs_kernel_op_s
*new_op
;
326 new_op
= op_alloc(ORANGEFS_VFS_OP_MKDIR
);
330 new_op
->upcall
.req
.mkdir
.parent_refn
= parent
->refn
;
332 fill_default_sys_attrs(new_op
->upcall
.req
.mkdir
.attributes
,
333 ORANGEFS_TYPE_DIRECTORY
, mode
);
335 strncpy(new_op
->upcall
.req
.mkdir
.d_name
,
336 dentry
->d_name
.name
, ORANGEFS_NAME_LEN
);
338 ret
= service_operation(new_op
, __func__
, get_interruptible_flag(dir
));
340 gossip_debug(GOSSIP_NAME_DEBUG
,
341 "Mkdir Got ORANGEFS handle %pU on fsid %d\n",
342 &new_op
->downcall
.resp
.mkdir
.refn
.khandle
,
343 new_op
->downcall
.resp
.mkdir
.refn
.fs_id
);
346 gossip_debug(GOSSIP_NAME_DEBUG
,
347 "%s: failed with error code %d\n",
352 inode
= orangefs_new_inode(dir
->i_sb
, dir
, S_IFDIR
| mode
, 0,
353 &new_op
->downcall
.resp
.mkdir
.refn
);
355 gossip_err("*** Failed to allocate orangefs dir inode\n");
356 ret
= PTR_ERR(inode
);
360 gossip_debug(GOSSIP_NAME_DEBUG
,
361 "Assigned dir inode new number of %pU\n",
362 get_khandle_from_ino(inode
));
364 d_instantiate(dentry
, inode
);
365 unlock_new_inode(inode
);
367 gossip_debug(GOSSIP_NAME_DEBUG
,
368 "Inode (Directory) %pU -> %s\n",
369 get_khandle_from_ino(inode
),
370 dentry
->d_name
.name
);
373 * NOTE: we have no good way to keep nlink consistent for directories
374 * across clients; keep constant at 1.
376 SetMtimeFlag(parent
);
377 dir
->i_mtime
= dir
->i_ctime
= current_fs_time(dir
->i_sb
);
378 mark_inode_dirty_sync(dir
);
384 static int orangefs_rename(struct inode
*old_dir
,
385 struct dentry
*old_dentry
,
386 struct inode
*new_dir
,
387 struct dentry
*new_dentry
)
389 struct orangefs_kernel_op_s
*new_op
;
392 gossip_debug(GOSSIP_NAME_DEBUG
,
393 "orangefs_rename: called (%s/%s => %s/%s) ct=%d\n",
394 old_dentry
->d_parent
->d_name
.name
,
395 old_dentry
->d_name
.name
,
396 new_dentry
->d_parent
->d_name
.name
,
397 new_dentry
->d_name
.name
,
398 d_count(new_dentry
));
400 new_op
= op_alloc(ORANGEFS_VFS_OP_RENAME
);
404 new_op
->upcall
.req
.rename
.old_parent_refn
= ORANGEFS_I(old_dir
)->refn
;
405 new_op
->upcall
.req
.rename
.new_parent_refn
= ORANGEFS_I(new_dir
)->refn
;
407 strncpy(new_op
->upcall
.req
.rename
.d_old_name
,
408 old_dentry
->d_name
.name
,
410 strncpy(new_op
->upcall
.req
.rename
.d_new_name
,
411 new_dentry
->d_name
.name
,
414 ret
= service_operation(new_op
,
416 get_interruptible_flag(old_dentry
->d_inode
));
418 gossip_debug(GOSSIP_NAME_DEBUG
,
419 "orangefs_rename: got downcall status %d\n",
422 if (new_dentry
->d_inode
)
423 new_dentry
->d_inode
->i_ctime
= CURRENT_TIME
;
429 /* ORANGEFS implementation of VFS inode operations for directories */
430 struct inode_operations orangefs_dir_inode_operations
= {
431 .lookup
= orangefs_lookup
,
432 .get_acl
= orangefs_get_acl
,
433 .set_acl
= orangefs_set_acl
,
434 .create
= orangefs_create
,
435 .unlink
= orangefs_unlink
,
436 .symlink
= orangefs_symlink
,
437 .mkdir
= orangefs_mkdir
,
438 .rmdir
= orangefs_unlink
,
439 .rename
= orangefs_rename
,
440 .setattr
= orangefs_setattr
,
441 .getattr
= orangefs_getattr
,
442 .setxattr
= generic_setxattr
,
443 .getxattr
= generic_getxattr
,
444 .removexattr
= generic_removexattr
,
445 .listxattr
= orangefs_listxattr
,