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e82894f8 TZ |
1 | /* |
2 | * VFS-related code for RelayFS, a high-speed data relay filesystem. | |
3 | * | |
4 | * Copyright (C) 2003-2005 - Tom Zanussi <zanussi@us.ibm.com>, IBM Corp | |
5 | * Copyright (C) 2003-2005 - Karim Yaghmour <karim@opersys.com> | |
6 | * | |
7 | * Based on ramfs, Copyright (C) 2002 - Linus Torvalds | |
8 | * | |
9 | * This file is released under the GPL. | |
10 | */ | |
11 | ||
12 | #include <linux/module.h> | |
13 | #include <linux/fs.h> | |
14 | #include <linux/mount.h> | |
15 | #include <linux/pagemap.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/string.h> | |
18 | #include <linux/backing-dev.h> | |
19 | #include <linux/namei.h> | |
20 | #include <linux/poll.h> | |
21 | #include <linux/relayfs_fs.h> | |
22 | #include "relay.h" | |
23 | #include "buffers.h" | |
24 | ||
25 | #define RELAYFS_MAGIC 0xF0B4A981 | |
26 | ||
27 | static struct vfsmount * relayfs_mount; | |
28 | static int relayfs_mount_count; | |
29 | static kmem_cache_t * relayfs_inode_cachep; | |
30 | ||
31 | static struct backing_dev_info relayfs_backing_dev_info = { | |
32 | .ra_pages = 0, /* No readahead */ | |
33 | .capabilities = BDI_CAP_NO_ACCT_DIRTY | BDI_CAP_NO_WRITEBACK, | |
34 | }; | |
35 | ||
36 | static struct inode *relayfs_get_inode(struct super_block *sb, int mode, | |
37 | struct rchan *chan) | |
38 | { | |
39 | struct rchan_buf *buf = NULL; | |
40 | struct inode *inode; | |
41 | ||
42 | if (S_ISREG(mode)) { | |
43 | BUG_ON(!chan); | |
44 | buf = relay_create_buf(chan); | |
45 | if (!buf) | |
46 | return NULL; | |
47 | } | |
48 | ||
49 | inode = new_inode(sb); | |
50 | if (!inode) { | |
51 | relay_destroy_buf(buf); | |
52 | return NULL; | |
53 | } | |
54 | ||
55 | inode->i_mode = mode; | |
56 | inode->i_uid = 0; | |
57 | inode->i_gid = 0; | |
58 | inode->i_blksize = PAGE_CACHE_SIZE; | |
59 | inode->i_blocks = 0; | |
60 | inode->i_mapping->backing_dev_info = &relayfs_backing_dev_info; | |
61 | inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
62 | switch (mode & S_IFMT) { | |
63 | case S_IFREG: | |
64 | inode->i_fop = &relayfs_file_operations; | |
65 | RELAYFS_I(inode)->buf = buf; | |
66 | break; | |
67 | case S_IFDIR: | |
68 | inode->i_op = &simple_dir_inode_operations; | |
69 | inode->i_fop = &simple_dir_operations; | |
70 | ||
71 | /* directory inodes start off with i_nlink == 2 (for "." entry) */ | |
72 | inode->i_nlink++; | |
73 | break; | |
74 | default: | |
75 | break; | |
76 | } | |
77 | ||
78 | return inode; | |
79 | } | |
80 | ||
81 | /** | |
82 | * relayfs_create_entry - create a relayfs directory or file | |
83 | * @name: the name of the file to create | |
84 | * @parent: parent directory | |
85 | * @mode: mode | |
86 | * @chan: relay channel associated with the file | |
87 | * | |
88 | * Returns the new dentry, NULL on failure | |
89 | * | |
90 | * Creates a file or directory with the specifed permissions. | |
91 | */ | |
92 | static struct dentry *relayfs_create_entry(const char *name, | |
93 | struct dentry *parent, | |
94 | int mode, | |
95 | struct rchan *chan) | |
96 | { | |
97 | struct dentry *d; | |
98 | struct inode *inode; | |
99 | int error = 0; | |
100 | ||
101 | BUG_ON(!name || !(S_ISREG(mode) || S_ISDIR(mode))); | |
102 | ||
103 | error = simple_pin_fs("relayfs", &relayfs_mount, &relayfs_mount_count); | |
104 | if (error) { | |
105 | printk(KERN_ERR "Couldn't mount relayfs: errcode %d\n", error); | |
106 | return NULL; | |
107 | } | |
108 | ||
109 | if (!parent && relayfs_mount && relayfs_mount->mnt_sb) | |
110 | parent = relayfs_mount->mnt_sb->s_root; | |
111 | ||
112 | if (!parent) { | |
113 | simple_release_fs(&relayfs_mount, &relayfs_mount_count); | |
114 | return NULL; | |
115 | } | |
116 | ||
117 | parent = dget(parent); | |
118 | down(&parent->d_inode->i_sem); | |
119 | d = lookup_one_len(name, parent, strlen(name)); | |
120 | if (IS_ERR(d)) { | |
121 | d = NULL; | |
122 | goto release_mount; | |
123 | } | |
124 | ||
125 | if (d->d_inode) { | |
126 | d = NULL; | |
127 | goto release_mount; | |
128 | } | |
129 | ||
130 | inode = relayfs_get_inode(parent->d_inode->i_sb, mode, chan); | |
131 | if (!inode) { | |
132 | d = NULL; | |
133 | goto release_mount; | |
134 | } | |
135 | ||
136 | d_instantiate(d, inode); | |
137 | dget(d); /* Extra count - pin the dentry in core */ | |
138 | ||
139 | if (S_ISDIR(mode)) | |
140 | parent->d_inode->i_nlink++; | |
141 | ||
142 | goto exit; | |
143 | ||
144 | release_mount: | |
145 | simple_release_fs(&relayfs_mount, &relayfs_mount_count); | |
146 | ||
147 | exit: | |
148 | up(&parent->d_inode->i_sem); | |
149 | dput(parent); | |
150 | return d; | |
151 | } | |
152 | ||
153 | /** | |
154 | * relayfs_create_file - create a file in the relay filesystem | |
155 | * @name: the name of the file to create | |
156 | * @parent: parent directory | |
157 | * @mode: mode, if not specied the default perms are used | |
158 | * @chan: channel associated with the file | |
159 | * | |
160 | * Returns file dentry if successful, NULL otherwise. | |
161 | * | |
162 | * The file will be created user r on behalf of current user. | |
163 | */ | |
164 | struct dentry *relayfs_create_file(const char *name, struct dentry *parent, | |
165 | int mode, struct rchan *chan) | |
166 | { | |
167 | if (!mode) | |
168 | mode = S_IRUSR; | |
169 | mode = (mode & S_IALLUGO) | S_IFREG; | |
170 | ||
171 | return relayfs_create_entry(name, parent, mode, chan); | |
172 | } | |
173 | ||
174 | /** | |
175 | * relayfs_create_dir - create a directory in the relay filesystem | |
176 | * @name: the name of the directory to create | |
177 | * @parent: parent directory, NULL if parent should be fs root | |
178 | * | |
179 | * Returns directory dentry if successful, NULL otherwise. | |
180 | * | |
181 | * The directory will be created world rwx on behalf of current user. | |
182 | */ | |
183 | struct dentry *relayfs_create_dir(const char *name, struct dentry *parent) | |
184 | { | |
185 | int mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO; | |
186 | return relayfs_create_entry(name, parent, mode, NULL); | |
187 | } | |
188 | ||
189 | /** | |
190 | * relayfs_remove - remove a file or directory in the relay filesystem | |
191 | * @dentry: file or directory dentry | |
192 | * | |
193 | * Returns 0 if successful, negative otherwise. | |
194 | */ | |
195 | int relayfs_remove(struct dentry *dentry) | |
196 | { | |
197 | struct dentry *parent; | |
198 | int error = 0; | |
199 | ||
200 | if (!dentry) | |
201 | return -EINVAL; | |
202 | parent = dentry->d_parent; | |
203 | if (!parent) | |
204 | return -EINVAL; | |
205 | ||
206 | parent = dget(parent); | |
207 | down(&parent->d_inode->i_sem); | |
208 | if (dentry->d_inode) { | |
209 | if (S_ISDIR(dentry->d_inode->i_mode)) | |
210 | error = simple_rmdir(parent->d_inode, dentry); | |
211 | else | |
212 | error = simple_unlink(parent->d_inode, dentry); | |
213 | if (!error) | |
214 | d_delete(dentry); | |
215 | } | |
216 | if (!error) | |
217 | dput(dentry); | |
218 | up(&parent->d_inode->i_sem); | |
219 | dput(parent); | |
220 | ||
221 | if (!error) | |
222 | simple_release_fs(&relayfs_mount, &relayfs_mount_count); | |
223 | ||
224 | return error; | |
225 | } | |
226 | ||
227 | /** | |
228 | * relayfs_remove_dir - remove a directory in the relay filesystem | |
229 | * @dentry: directory dentry | |
230 | * | |
231 | * Returns 0 if successful, negative otherwise. | |
232 | */ | |
233 | int relayfs_remove_dir(struct dentry *dentry) | |
234 | { | |
235 | return relayfs_remove(dentry); | |
236 | } | |
237 | ||
238 | /** | |
239 | * relayfs_open - open file op for relayfs files | |
240 | * @inode: the inode | |
241 | * @filp: the file | |
242 | * | |
243 | * Increments the channel buffer refcount. | |
244 | */ | |
245 | static int relayfs_open(struct inode *inode, struct file *filp) | |
246 | { | |
247 | struct rchan_buf *buf = RELAYFS_I(inode)->buf; | |
248 | kref_get(&buf->kref); | |
249 | ||
250 | return 0; | |
251 | } | |
252 | ||
253 | /** | |
254 | * relayfs_mmap - mmap file op for relayfs files | |
255 | * @filp: the file | |
256 | * @vma: the vma describing what to map | |
257 | * | |
258 | * Calls upon relay_mmap_buf to map the file into user space. | |
259 | */ | |
260 | static int relayfs_mmap(struct file *filp, struct vm_area_struct *vma) | |
261 | { | |
262 | struct inode *inode = filp->f_dentry->d_inode; | |
263 | return relay_mmap_buf(RELAYFS_I(inode)->buf, vma); | |
264 | } | |
265 | ||
266 | /** | |
267 | * relayfs_poll - poll file op for relayfs files | |
268 | * @filp: the file | |
269 | * @wait: poll table | |
270 | * | |
271 | * Poll implemention. | |
272 | */ | |
273 | static unsigned int relayfs_poll(struct file *filp, poll_table *wait) | |
274 | { | |
275 | unsigned int mask = 0; | |
276 | struct inode *inode = filp->f_dentry->d_inode; | |
277 | struct rchan_buf *buf = RELAYFS_I(inode)->buf; | |
278 | ||
279 | if (buf->finalized) | |
280 | return POLLERR; | |
281 | ||
282 | if (filp->f_mode & FMODE_READ) { | |
283 | poll_wait(filp, &buf->read_wait, wait); | |
284 | if (!relay_buf_empty(buf)) | |
285 | mask |= POLLIN | POLLRDNORM; | |
286 | } | |
287 | ||
288 | return mask; | |
289 | } | |
290 | ||
291 | /** | |
292 | * relayfs_release - release file op for relayfs files | |
293 | * @inode: the inode | |
294 | * @filp: the file | |
295 | * | |
296 | * Decrements the channel refcount, as the filesystem is | |
297 | * no longer using it. | |
298 | */ | |
299 | static int relayfs_release(struct inode *inode, struct file *filp) | |
300 | { | |
301 | struct rchan_buf *buf = RELAYFS_I(inode)->buf; | |
302 | kref_put(&buf->kref, relay_remove_buf); | |
303 | ||
304 | return 0; | |
305 | } | |
306 | ||
307 | /** | |
308 | * relayfs_read_consume - update the consumed count for the buffer | |
309 | */ | |
310 | static void relayfs_read_consume(struct rchan_buf *buf, | |
311 | size_t read_pos, | |
312 | size_t bytes_consumed) | |
313 | { | |
314 | size_t subbuf_size = buf->chan->subbuf_size; | |
315 | size_t n_subbufs = buf->chan->n_subbufs; | |
316 | size_t read_subbuf; | |
317 | ||
318 | if (buf->bytes_consumed + bytes_consumed > subbuf_size) { | |
319 | relay_subbufs_consumed(buf->chan, buf->cpu, 1); | |
320 | buf->bytes_consumed = 0; | |
321 | } | |
322 | ||
323 | buf->bytes_consumed += bytes_consumed; | |
324 | read_subbuf = read_pos / buf->chan->subbuf_size; | |
325 | if (buf->bytes_consumed + buf->padding[read_subbuf] == subbuf_size) { | |
326 | if ((read_subbuf == buf->subbufs_produced % n_subbufs) && | |
327 | (buf->offset == subbuf_size)) | |
328 | return; | |
329 | relay_subbufs_consumed(buf->chan, buf->cpu, 1); | |
330 | buf->bytes_consumed = 0; | |
331 | } | |
332 | } | |
333 | ||
334 | /** | |
335 | * relayfs_read_avail - boolean, are there unconsumed bytes available? | |
336 | */ | |
337 | static int relayfs_read_avail(struct rchan_buf *buf, size_t read_pos) | |
338 | { | |
339 | size_t bytes_produced, bytes_consumed, write_offset; | |
340 | size_t subbuf_size = buf->chan->subbuf_size; | |
341 | size_t n_subbufs = buf->chan->n_subbufs; | |
342 | size_t produced = buf->subbufs_produced % n_subbufs; | |
343 | size_t consumed = buf->subbufs_consumed % n_subbufs; | |
344 | ||
345 | write_offset = buf->offset > subbuf_size ? subbuf_size : buf->offset; | |
346 | ||
347 | if (consumed > produced) { | |
348 | if ((produced > n_subbufs) && | |
349 | (produced + n_subbufs - consumed <= n_subbufs)) | |
350 | produced += n_subbufs; | |
351 | } else if (consumed == produced) { | |
352 | if (buf->offset > subbuf_size) { | |
353 | produced += n_subbufs; | |
354 | if (buf->subbufs_produced == buf->subbufs_consumed) | |
355 | consumed += n_subbufs; | |
356 | } | |
357 | } | |
358 | ||
359 | if (buf->offset > subbuf_size) | |
360 | bytes_produced = (produced - 1) * subbuf_size + write_offset; | |
361 | else | |
362 | bytes_produced = produced * subbuf_size + write_offset; | |
363 | bytes_consumed = consumed * subbuf_size + buf->bytes_consumed; | |
364 | ||
365 | if (bytes_produced == bytes_consumed) | |
366 | return 0; | |
367 | ||
368 | relayfs_read_consume(buf, read_pos, 0); | |
369 | ||
370 | return 1; | |
371 | } | |
372 | ||
373 | /** | |
374 | * relayfs_read_subbuf_avail - return bytes available in sub-buffer | |
375 | */ | |
376 | static size_t relayfs_read_subbuf_avail(size_t read_pos, | |
377 | struct rchan_buf *buf) | |
378 | { | |
379 | size_t padding, avail = 0; | |
380 | size_t read_subbuf, read_offset, write_subbuf, write_offset; | |
381 | size_t subbuf_size = buf->chan->subbuf_size; | |
382 | ||
383 | write_subbuf = (buf->data - buf->start) / subbuf_size; | |
384 | write_offset = buf->offset > subbuf_size ? subbuf_size : buf->offset; | |
385 | read_subbuf = read_pos / subbuf_size; | |
386 | read_offset = read_pos % subbuf_size; | |
387 | padding = buf->padding[read_subbuf]; | |
388 | ||
389 | if (read_subbuf == write_subbuf) { | |
390 | if (read_offset + padding < write_offset) | |
391 | avail = write_offset - (read_offset + padding); | |
392 | } else | |
393 | avail = (subbuf_size - padding) - read_offset; | |
394 | ||
395 | return avail; | |
396 | } | |
397 | ||
398 | /** | |
399 | * relayfs_read_start_pos - find the first available byte to read | |
400 | * | |
401 | * If the read_pos is in the middle of padding, return the | |
402 | * position of the first actually available byte, otherwise | |
403 | * return the original value. | |
404 | */ | |
405 | static size_t relayfs_read_start_pos(size_t read_pos, | |
406 | struct rchan_buf *buf) | |
407 | { | |
408 | size_t read_subbuf, padding, padding_start, padding_end; | |
409 | size_t subbuf_size = buf->chan->subbuf_size; | |
410 | size_t n_subbufs = buf->chan->n_subbufs; | |
411 | ||
412 | read_subbuf = read_pos / subbuf_size; | |
413 | padding = buf->padding[read_subbuf]; | |
414 | padding_start = (read_subbuf + 1) * subbuf_size - padding; | |
415 | padding_end = (read_subbuf + 1) * subbuf_size; | |
416 | if (read_pos >= padding_start && read_pos < padding_end) { | |
417 | read_subbuf = (read_subbuf + 1) % n_subbufs; | |
418 | read_pos = read_subbuf * subbuf_size; | |
419 | } | |
420 | ||
421 | return read_pos; | |
422 | } | |
423 | ||
424 | /** | |
425 | * relayfs_read_end_pos - return the new read position | |
426 | */ | |
427 | static size_t relayfs_read_end_pos(struct rchan_buf *buf, | |
428 | size_t read_pos, | |
429 | size_t count) | |
430 | { | |
431 | size_t read_subbuf, padding, end_pos; | |
432 | size_t subbuf_size = buf->chan->subbuf_size; | |
433 | size_t n_subbufs = buf->chan->n_subbufs; | |
434 | ||
435 | read_subbuf = read_pos / subbuf_size; | |
436 | padding = buf->padding[read_subbuf]; | |
437 | if (read_pos % subbuf_size + count + padding == subbuf_size) | |
438 | end_pos = (read_subbuf + 1) * subbuf_size; | |
439 | else | |
440 | end_pos = read_pos + count; | |
441 | if (end_pos >= subbuf_size * n_subbufs) | |
442 | end_pos = 0; | |
443 | ||
444 | return end_pos; | |
445 | } | |
446 | ||
447 | /** | |
448 | * relayfs_read - read file op for relayfs files | |
449 | * @filp: the file | |
450 | * @buffer: the userspace buffer | |
451 | * @count: number of bytes to read | |
452 | * @ppos: position to read from | |
453 | * | |
454 | * Reads count bytes or the number of bytes available in the | |
455 | * current sub-buffer being read, whichever is smaller. | |
456 | */ | |
457 | static ssize_t relayfs_read(struct file *filp, | |
458 | char __user *buffer, | |
459 | size_t count, | |
460 | loff_t *ppos) | |
461 | { | |
462 | struct inode *inode = filp->f_dentry->d_inode; | |
463 | struct rchan_buf *buf = RELAYFS_I(inode)->buf; | |
464 | size_t read_start, avail; | |
465 | ssize_t ret = 0; | |
466 | void *from; | |
467 | ||
468 | down(&inode->i_sem); | |
469 | if(!relayfs_read_avail(buf, *ppos)) | |
470 | goto out; | |
471 | ||
472 | read_start = relayfs_read_start_pos(*ppos, buf); | |
473 | avail = relayfs_read_subbuf_avail(read_start, buf); | |
474 | if (!avail) | |
475 | goto out; | |
476 | ||
477 | from = buf->start + read_start; | |
478 | ret = count = min(count, avail); | |
479 | if (copy_to_user(buffer, from, count)) { | |
480 | ret = -EFAULT; | |
481 | goto out; | |
482 | } | |
483 | relayfs_read_consume(buf, read_start, count); | |
484 | *ppos = relayfs_read_end_pos(buf, read_start, count); | |
485 | out: | |
486 | up(&inode->i_sem); | |
487 | return ret; | |
488 | } | |
489 | ||
490 | /** | |
491 | * relayfs alloc_inode() implementation | |
492 | */ | |
493 | static struct inode *relayfs_alloc_inode(struct super_block *sb) | |
494 | { | |
495 | struct relayfs_inode_info *p = kmem_cache_alloc(relayfs_inode_cachep, SLAB_KERNEL); | |
496 | if (!p) | |
497 | return NULL; | |
498 | p->buf = NULL; | |
499 | ||
500 | return &p->vfs_inode; | |
501 | } | |
502 | ||
503 | /** | |
504 | * relayfs destroy_inode() implementation | |
505 | */ | |
506 | static void relayfs_destroy_inode(struct inode *inode) | |
507 | { | |
508 | if (RELAYFS_I(inode)->buf) | |
509 | relay_destroy_buf(RELAYFS_I(inode)->buf); | |
510 | ||
511 | kmem_cache_free(relayfs_inode_cachep, RELAYFS_I(inode)); | |
512 | } | |
513 | ||
514 | static void init_once(void *p, kmem_cache_t *cachep, unsigned long flags) | |
515 | { | |
516 | struct relayfs_inode_info *i = p; | |
517 | if ((flags & (SLAB_CTOR_VERIFY | SLAB_CTOR_CONSTRUCTOR)) == SLAB_CTOR_CONSTRUCTOR) | |
518 | inode_init_once(&i->vfs_inode); | |
519 | } | |
520 | ||
521 | struct file_operations relayfs_file_operations = { | |
522 | .open = relayfs_open, | |
523 | .poll = relayfs_poll, | |
524 | .mmap = relayfs_mmap, | |
525 | .read = relayfs_read, | |
526 | .llseek = no_llseek, | |
527 | .release = relayfs_release, | |
528 | }; | |
529 | ||
530 | static struct super_operations relayfs_ops = { | |
531 | .statfs = simple_statfs, | |
532 | .drop_inode = generic_delete_inode, | |
533 | .alloc_inode = relayfs_alloc_inode, | |
534 | .destroy_inode = relayfs_destroy_inode, | |
535 | }; | |
536 | ||
537 | static int relayfs_fill_super(struct super_block * sb, void * data, int silent) | |
538 | { | |
539 | struct inode *inode; | |
540 | struct dentry *root; | |
541 | int mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO; | |
542 | ||
543 | sb->s_blocksize = PAGE_CACHE_SIZE; | |
544 | sb->s_blocksize_bits = PAGE_CACHE_SHIFT; | |
545 | sb->s_magic = RELAYFS_MAGIC; | |
546 | sb->s_op = &relayfs_ops; | |
547 | inode = relayfs_get_inode(sb, mode, NULL); | |
548 | ||
549 | if (!inode) | |
550 | return -ENOMEM; | |
551 | ||
552 | root = d_alloc_root(inode); | |
553 | if (!root) { | |
554 | iput(inode); | |
555 | return -ENOMEM; | |
556 | } | |
557 | sb->s_root = root; | |
558 | ||
559 | return 0; | |
560 | } | |
561 | ||
562 | static struct super_block * relayfs_get_sb(struct file_system_type *fs_type, | |
563 | int flags, const char *dev_name, | |
564 | void *data) | |
565 | { | |
566 | return get_sb_single(fs_type, flags, data, relayfs_fill_super); | |
567 | } | |
568 | ||
569 | static struct file_system_type relayfs_fs_type = { | |
570 | .owner = THIS_MODULE, | |
571 | .name = "relayfs", | |
572 | .get_sb = relayfs_get_sb, | |
573 | .kill_sb = kill_litter_super, | |
574 | }; | |
575 | ||
576 | static int __init init_relayfs_fs(void) | |
577 | { | |
578 | int err; | |
579 | ||
580 | relayfs_inode_cachep = kmem_cache_create("relayfs_inode_cache", | |
581 | sizeof(struct relayfs_inode_info), 0, | |
582 | 0, init_once, NULL); | |
583 | if (!relayfs_inode_cachep) | |
584 | return -ENOMEM; | |
585 | ||
586 | err = register_filesystem(&relayfs_fs_type); | |
587 | if (err) | |
588 | kmem_cache_destroy(relayfs_inode_cachep); | |
589 | ||
590 | return err; | |
591 | } | |
592 | ||
593 | static void __exit exit_relayfs_fs(void) | |
594 | { | |
595 | unregister_filesystem(&relayfs_fs_type); | |
596 | kmem_cache_destroy(relayfs_inode_cachep); | |
597 | } | |
598 | ||
599 | module_init(init_relayfs_fs) | |
600 | module_exit(exit_relayfs_fs) | |
601 | ||
602 | EXPORT_SYMBOL_GPL(relayfs_file_operations); | |
603 | EXPORT_SYMBOL_GPL(relayfs_create_dir); | |
604 | EXPORT_SYMBOL_GPL(relayfs_remove_dir); | |
605 | ||
606 | MODULE_AUTHOR("Tom Zanussi <zanussi@us.ibm.com> and Karim Yaghmour <karim@opersys.com>"); | |
607 | MODULE_DESCRIPTION("Relay Filesystem"); | |
608 | MODULE_LICENSE("GPL"); | |
609 |