summaryrefslogtreecommitdiffstats
path: root/fs/afs/proc.c
blob: 2a0c83d71565981eee8d1a265e35304d0a19b56c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
// SPDX-License-Identifier: GPL-2.0-or-later
/* /proc interface for AFS
 *
 * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 */

#include <linux/slab.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/sched.h>
#include <linux/uaccess.h>
#include "internal.h"

struct afs_vl_seq_net_private {
	struct seq_net_private		seq;	/* Must be first */
	struct afs_vlserver_list	*vllist;
};

static inline struct afs_net *afs_seq2net(struct seq_file *m)
{
	return afs_net(seq_file_net(m));
}

static inline struct afs_net *afs_seq2net_single(struct seq_file *m)
{
	return afs_net(seq_file_single_net(m));
}

/*
 * Display the list of cells known to the namespace.
 */
static int afs_proc_cells_show(struct seq_file *m, void *v)
{
	struct afs_vlserver_list *vllist;
	struct afs_cell *cell;

	if (v == SEQ_START_TOKEN) {
		/* display header on line 1 */
		seq_puts(m, "USE ACT    TTL SV ST NAME\n");
		return 0;
	}

	cell = list_entry(v, struct afs_cell, proc_link);
	vllist = rcu_dereference(cell->vl_servers);

	/* display one cell per line on subsequent lines */
	seq_printf(m, "%3u %3u %6lld %2u %2u %s\n",
		   refcount_read(&cell->ref),
		   atomic_read(&cell->active),
		   cell->dns_expiry - ktime_get_real_seconds(),
		   vllist ? vllist->nr_servers : 0,
		   cell->state,
		   cell->name);
	return 0;
}

static void *afs_proc_cells_start(struct seq_file *m, loff_t *_pos)
	__acquires(rcu)
{
	rcu_read_lock();
	return seq_hlist_start_head_rcu(&afs_seq2net(m)->proc_cells, *_pos);
}

static void *afs_proc_cells_next(struct seq_file *m, void *v, loff_t *pos)
{
	return seq_hlist_next_rcu(v, &afs_seq2net(m)->proc_cells, pos);
}

static void afs_proc_cells_stop(struct seq_file *m, void *v)
	__releases(rcu)
{
	rcu_read_unlock();
}

static const struct seq_operations afs_proc_cells_ops = {
	.start	= afs_proc_cells_start,
	.next	= afs_proc_cells_next,
	.stop	= afs_proc_cells_stop,
	.show	= afs_proc_cells_show,
};

/*
 * handle writes to /proc/fs/afs/cells
 * - to add cells: echo "add <cellname> <IP>[:<IP>][:<IP>]"
 */
static int afs_proc_cells_write(struct file *file, char *buf, size_t size)
{
	struct seq_file *m = file->private_data;
	struct afs_net *net = afs_seq2net(m);
	char *name, *args;
	int ret;

	/* trim to first NL */
	name = memchr(buf, '\n', size);
	if (name)
		*name = 0;

	/* split into command, name and argslist */
	name = strchr(buf, ' ');
	if (!name)
		goto inval;
	do {
		*name++ = 0;
	} while(*name == ' ');
	if (!*name)
		goto inval;

	args = strchr(name, ' ');
	if (args) {
		do {
			*args++ = 0;
		} while(*args == ' ');
		if (!*args)
			goto inval;
	}

	/* determine command to perform */
	_debug("cmd=%s name=%s args=%s", buf, name, args);

	if (strcmp(buf, "add") == 0) {
		struct afs_cell *cell;

		cell = afs_lookup_cell(net, name, strlen(name), args, true);
		if (IS_ERR(cell)) {
			ret = PTR_ERR(cell);
			goto done;
		}

		if (test_and_set_bit(AFS_CELL_FL_NO_GC, &cell->flags))
			afs_unuse_cell(net, cell, afs_cell_trace_unuse_no_pin);
	} else {
		goto inval;
	}

	ret = 0;

done:
	_leave(" = %d", ret);
	return ret;

inval:
	ret = -EINVAL;
	printk("kAFS: Invalid Command on /proc/fs/afs/cells file\n");
	goto done;
}

/*
 * Display the name of the current workstation cell.
 */
static int afs_proc_rootcell_show(struct seq_file *m, void *v)
{
	struct afs_cell *cell;
	struct afs_net *net;

	net = afs_seq2net_single(m);
	down_read(&net->cells_lock);
	cell = net->ws_cell;
	if (cell)
		seq_printf(m, "%s\n", cell->name);
	up_read(&net->cells_lock);
	return 0;
}

/*
 * Set the current workstation cell and optionally supply its list of volume
 * location servers.
 *
 *	echo "cell.name:192.168.231.14" >/proc/fs/afs/rootcell
 */
static int afs_proc_rootcell_write(struct file *file, char *buf, size_t size)
{
	struct seq_file *m = file->private_data;
	struct afs_net *net = afs_seq2net_single(m);
	char *s;
	int ret;

	ret = -EINVAL;
	if (buf[0] == '.')
		goto out;
	if (memchr(buf, '/', size))
		goto out;

	/* trim to first NL */
	s = memchr(buf, '\n', size);
	if (s)
		*s = 0;

	/* determine command to perform */
	_debug("rootcell=%s", buf);

	ret = afs_cell_init(net, buf);

out:
	_leave(" = %d", ret);
	return ret;
}

static const char afs_vol_types[3][3] = {
	[AFSVL_RWVOL]	= "RW",
	[AFSVL_ROVOL]	= "RO",
	[AFSVL_BACKVOL]	= "BK",
};

/*
 * Display the list of volumes known to a cell.
 */
static int afs_proc_cell_volumes_show(struct seq_file *m, void *v)
{
	struct afs_volume *vol = hlist_entry(v, struct afs_volume, proc_link);

	/* Display header on line 1 */
	if (v == SEQ_START_TOKEN) {
		seq_puts(m, "USE VID      TY NAME\n");
		return 0;
	}

	seq_printf(m, "%3d %08llx %s %s\n",
		   refcount_read(&vol->ref), vol->vid,
		   afs_vol_types[vol->type],
		   vol->name);

	return 0;
}

static void *afs_proc_cell_volumes_start(struct seq_file *m, loff_t *_pos)
	__acquires(cell->proc_lock)
{
	struct afs_cell *cell = pde_data(file_inode(m->file));

	rcu_read_lock();
	return seq_hlist_start_head_rcu(&cell->proc_volumes, *_pos);
}

static void *afs_proc_cell_volumes_next(struct seq_file *m, void *v,
					loff_t *_pos)
{
	struct afs_cell *cell = pde_data(file_inode(m->file));

	return seq_hlist_next_rcu(v, &cell->proc_volumes, _pos);
}

static void afs_proc_cell_volumes_stop(struct seq_file *m, void *v)
	__releases(cell->proc_lock)
{
	rcu_read_unlock();
}

static const struct seq_operations afs_proc_cell_volumes_ops = {
	.start	= afs_proc_cell_volumes_start,
	.next	= afs_proc_cell_volumes_next,
	.stop	= afs_proc_cell_volumes_stop,
	.show	= afs_proc_cell_volumes_show,
};

static const char *const dns_record_sources[NR__dns_record_source + 1] = {
	[DNS_RECORD_UNAVAILABLE]	= "unav",
	[DNS_RECORD_FROM_CONFIG]	= "cfg",
	[DNS_RECORD_FROM_DNS_A]		= "A",
	[DNS_RECORD_FROM_DNS_AFSDB]	= "AFSDB",
	[DNS_RECORD_FROM_DNS_SRV]	= "SRV",
	[DNS_RECORD_FROM_NSS]		= "nss",
	[NR__dns_record_source]		= "[weird]"
};

static const char *const dns_lookup_statuses[NR__dns_lookup_status + 1] = {
	[DNS_LOOKUP_NOT_DONE]		= "no-lookup",
	[DNS_LOOKUP_GOOD]		= "good",
	[DNS_LOOKUP_GOOD_WITH_BAD]	= "good/bad",
	[DNS_LOOKUP_BAD]		= "bad",
	[DNS_LOOKUP_GOT_NOT_FOUND]	= "not-found",
	[DNS_LOOKUP_GOT_LOCAL_FAILURE]	= "local-failure",
	[DNS_LOOKUP_GOT_TEMP_FAILURE]	= "temp-failure",
	[DNS_LOOKUP_GOT_NS_FAILURE]	= "ns-failure",
	[NR__dns_lookup_status]		= "[weird]"
};

/*
 * Display the list of Volume Location servers we're using for a cell.
 */
static int afs_proc_cell_vlservers_show(struct seq_file *m, void *v)
{
	const struct afs_vl_seq_net_private *priv = m->private;
	const struct afs_vlserver_list *vllist = priv->vllist;
	const struct afs_vlserver_entry *entry;
	const struct afs_vlserver *vlserver;
	const struct afs_addr_list *alist;
	int i;

	if (v == SEQ_START_TOKEN) {
		seq_printf(m, "# source %s, status %s\n",
			   dns_record_sources[vllist ? vllist->source : 0],
			   dns_lookup_statuses[vllist ? vllist->status : 0]);
		return 0;
	}

	entry = v;
	vlserver = entry->server;
	alist = rcu_dereference(vlserver->addresses);

	seq_printf(m, "%s [p=%hu w=%hu s=%s,%s]:\n",
		   vlserver->name, entry->priority, entry->weight,
		   dns_record_sources[alist ? alist->source : entry->source],
		   dns_lookup_statuses[alist ? alist->status : entry->status]);
	if (alist) {
		for (i = 0; i < alist->nr_addrs; i++)
			seq_printf(m, " %c %pISpc\n",
				   alist->preferred == i ? '>' : '-',
				   &alist->addrs[i].transport);
	}
	seq_printf(m, " info: fl=%lx rtt=%d\n", vlserver->flags, vlserver->rtt);
	seq_printf(m, " probe: fl=%x e=%d ac=%d out=%d\n",
		   vlserver->probe.flags, vlserver->probe.error,
		   vlserver->probe.abort_code,
		   atomic_read(&vlserver->probe_outstanding));
	return 0;
}

static void *afs_proc_cell_vlservers_start(struct seq_file *m, loff_t *_pos)
	__acquires(rcu)
{
	struct afs_vl_seq_net_private *priv = m->private;
	struct afs_vlserver_list *vllist;
	struct afs_cell *cell = pde_data(file_inode(m->file));
	loff_t pos = *_pos;

	rcu_read_lock();

	vllist = rcu_dereference(cell->vl_servers);
	priv->vllist = vllist;

	if (pos < 0)
		*_pos = pos = 0;
	if (pos == 0)
		return SEQ_START_TOKEN;

	if (pos - 1 >= vllist->nr_servers)
		return NULL;

	return &vllist->servers[pos - 1];
}

static void *afs_proc_cell_vlservers_next(struct seq_file *m, void *v,
					  loff_t *_pos)
{
	struct afs_vl_seq_net_private *priv = m->private;
	struct afs_vlserver_list *vllist = priv->vllist;
	loff_t pos;

	pos = *_pos;
	pos++;
	*_pos = pos;
	if (!vllist || pos - 1 >= vllist->nr_servers)
		return NULL;

	return &vllist->servers[pos - 1];
}

static void afs_proc_cell_vlservers_stop(struct seq_file *m, void *v)
	__releases(rcu)
{
	rcu_read_unlock();
}

static const struct seq_operations afs_proc_cell_vlservers_ops = {
	.start	= afs_proc_cell_vlservers_start,
	.next	= afs_proc_cell_vlservers_next,
	.stop	= afs_proc_cell_vlservers_stop,
	.show	= afs_proc_cell_vlservers_show,
};

/*
 * Display the list of fileservers we're using within a namespace.
 */
static int afs_proc_servers_show(struct seq_file *m, void *v)
{
	struct afs_server *server;
	struct afs_addr_list *alist;
	int i;

	if (v == SEQ_START_TOKEN) {
		seq_puts(m, "UUID                                 REF ACT\n");
		return 0;
	}

	server = list_entry(v, struct afs_server, proc_link);
	alist = rcu_dereference(server->addresses);
	seq_printf(m, "%pU %3d %3d\n",
		   &server->uuid,
		   refcount_read(&server->ref),
		   atomic_read(&server->active));
	seq_printf(m, "  - info: fl=%lx rtt=%u brk=%x\n",
		   server->flags, server->rtt, server->cb_s_break);
	seq_printf(m, "  - probe: last=%d out=%d\n",
		   (int)(jiffies - server->probed_at) / HZ,
		   atomic_read(&server->probe_outstanding));
	seq_printf(m, "  - ALIST v=%u rsp=%lx f=%lx\n",
		   alist->version, alist->responded, alist->failed);
	for (i = 0; i < alist->nr_addrs; i++)
		seq_printf(m, "    [%x] %pISpc%s\n",
			   i, &alist->addrs[i].transport,
			   alist->preferred == i ? "*" : "");
	return 0;
}

static void *afs_proc_servers_start(struct seq_file *m, loff_t *_pos)
	__acquires(rcu)
{
	rcu_read_lock();
	return seq_hlist_start_head_rcu(&afs_seq2net(m)->fs_proc, *_pos);
}

static void *afs_proc_servers_next(struct seq_file *m, void *v, loff_t *_pos)
{
	return seq_hlist_next_rcu(v, &afs_seq2net(m)->fs_proc, _pos);
}

static void afs_proc_servers_stop(struct seq_file *m, void *v)
	__releases(rcu)
{
	rcu_read_unlock();
}

static const struct seq_operations afs_proc_servers_ops = {
	.start	= afs_proc_servers_start,
	.next	= afs_proc_servers_next,
	.stop	= afs_proc_servers_stop,
	.show	= afs_proc_servers_show,
};

/*
 * Display the list of strings that may be substituted for the @sys pathname
 * macro.
 */
static int afs_proc_sysname_show(struct seq_file *m, void *v)
{
	struct afs_net *net = afs_seq2net(m);
	struct afs_sysnames *sysnames = net->sysnames;
	unsigned int i = (unsigned long)v - 1;

	if (i < sysnames->nr)
		seq_printf(m, "%s\n", sysnames->subs[i]);
	return 0;
}

static void *afs_proc_sysname_start(struct seq_file *m, loff_t *pos)
	__acquires(&net->sysnames_lock)
{
	struct afs_net *net = afs_seq2net(m);
	struct afs_sysnames *names;

	read_lock(&net->sysnames_lock);

	names = net->sysnames;
	if (*pos >= names->nr)
		return NULL;
	return (void *)(unsigned long)(*pos + 1);
}

static void *afs_proc_sysname_next(struct seq_file *m, void *v, loff_t *pos)
{
	struct afs_net *net = afs_seq2net(m);
	struct afs_sysnames *names = net->sysnames;

	*pos += 1;
	if (*pos >= names->nr)
		return NULL;
	return (void *)(unsigned long)(*pos + 1);
}

static void afs_proc_sysname_stop(struct seq_file *m, void *v)
	__releases(&net->sysnames_lock)
{
	struct afs_net *net = afs_seq2net(m);

	read_unlock(&net->sysnames_lock);
}

static const struct seq_operations afs_proc_sysname_ops = {
	.start	= afs_proc_sysname_start,
	.next	= afs_proc_sysname_next,
	.stop	= afs_proc_sysname_stop,
	.show	= afs_proc_sysname_show,
};

/*
 * Allow the @sys substitution to be configured.
 */
static int afs_proc_sysname_write(struct file *file, char *buf, size_t size)
{
	struct afs_sysnames *sysnames, *kill;
	struct seq_file *m = file->private_data;
	struct afs_net *net = afs_seq2net(m);
	char *s, *p, *sub;
	int ret, len;

	sysnames = kzalloc(sizeof(*sysnames), GFP_KERNEL);
	if (!sysnames)
		return -ENOMEM;
	refcount_set(&sysnames->usage, 1);
	kill = sysnames;

	p = buf;
	while ((s = strsep(&p, " \t\n"))) {
		len = strlen(s);
		if (len == 0)
			continue;
		ret = -ENAMETOOLONG;
		if (len >= AFSNAMEMAX)
			goto error;

		if (len >= 4 &&
		    s[len - 4] == '@' &&
		    s[len - 3] == 's' &&
		    s[len - 2] == 'y' &&
		    s[len - 1] == 's')
			/* Protect against recursion */
			goto invalid;

		if (s[0] == '.' &&
		    (len < 2 || (len == 2 && s[1] == '.')))
			goto invalid;

		if (memchr(s, '/', len))
			goto invalid;

		ret = -EFBIG;
		if (sysnames->nr >= AFS_NR_SYSNAME)
			goto out;

		if (strcmp(s, afs_init_sysname) == 0) {
			sub = (char *)afs_init_sysname;
		} else {
			ret = -ENOMEM;
			sub = kmemdup(s, len + 1, GFP_KERNEL);
			if (!sub)
				goto out;
		}

		sysnames->subs[sysnames->nr] = sub;
		sysnames->nr++;
	}

	if (sysnames->nr == 0) {
		sysnames->subs[0] = sysnames->blank;
		sysnames->nr++;
	}

	write_lock(&net->sysnames_lock);
	kill = net->sysnames;
	net->sysnames = sysnames;
	write_unlock(&net->sysnames_lock);
	ret = 0;
out:
	afs_put_sysnames(kill);
	return ret;

invalid:
	ret = -EINVAL;
error:
	goto out;
}

void afs_put_sysnames(struct afs_sysnames *sysnames)
{
	int i;

	if (sysnames && refcount_dec_and_test(&sysnames->usage)) {
		for (i = 0; i < sysnames->nr; i++)
			if (sysnames->subs[i] != afs_init_sysname &&
			    sysnames->subs[i] != sysnames->blank)
				kfree(sysnames->subs[i]);
		kfree(sysnames);
	}
}

/*
 * Display general per-net namespace statistics
 */
static int afs_proc_stats_show(struct seq_file *m, void *v)
{
	struct afs_net *net = afs_seq2net_single(m);

	seq_puts(m, "kAFS statistics\n");

	seq_printf(m, "dir-mgmt: look=%u reval=%u inval=%u relpg=%u\n",
		   atomic_read(&net->n_lookup),
		   atomic_read(&net->n_reval),
		   atomic_read(&net->n_inval),
		   atomic_read(&net->n_relpg));

	seq_printf(m, "dir-data: rdpg=%u\n",
		   atomic_read(&net->n_read_dir));

	seq_printf(m, "dir-edit: cr=%u rm=%u\n",
		   atomic_read(&net->n_dir_cr),
		   atomic_read(&net->n_dir_rm));

	seq_printf(m, "file-rd : n=%u nb=%lu\n",
		   atomic_read(&net->n_fetches),
		   atomic_long_read(&net->n_fetch_bytes));
	seq_printf(m, "file-wr : n=%u nb=%lu\n",
		   atomic_read(&net->n_stores),
		   atomic_long_read(&net->n_store_bytes));
	return 0;
}

/*
 * initialise /proc/fs/afs/<cell>/
 */
int afs_proc_cell_setup(struct afs_cell *cell)
{
	struct proc_dir_entry *dir;
	struct afs_net *net = cell->net;

	_enter("%p{%s},%p", cell, cell->name, net->proc_afs);

	dir = proc_net_mkdir(net->net, cell->name, net->proc_afs);
	if (!dir)
		goto error_dir;

	if (!proc_create_net_data("vlservers", 0444, dir,
				  &afs_proc_cell_vlservers_ops,
				  sizeof(struct afs_vl_seq_net_private),
				  cell) ||
	    !proc_create_net_data("volumes", 0444, dir,
				  &afs_proc_cell_volumes_ops,
				  sizeof(struct seq_net_private),
				  cell))
		goto error_tree;

	_leave(" = 0");
	return 0;

error_tree:
	remove_proc_subtree(cell->name, net->proc_afs);
error_dir:
	_leave(" = -ENOMEM");
	return -ENOMEM;
}

/*
 * remove /proc/fs/afs/<cell>/
 */
void afs_proc_cell_remove(struct afs_cell *cell)
{
	struct afs_net *net = cell->net;

	_enter("");
	remove_proc_subtree(cell->name, net->proc_afs);
	_leave("");
}

/*
 * initialise the /proc/fs/afs/ directory
 */
int afs_proc_init(struct afs_net *net)
{
	struct proc_dir_entry *p;

	_enter("");

	p = proc_net_mkdir(net->net, "afs", net->net->proc_net);
	if (!p)
		goto error_dir;

	if (!proc_create_net_data_write("cells", 0644, p,
					&afs_proc_cells_ops,
					afs_proc_cells_write,
					sizeof(struct seq_net_private),
					NULL) ||
	    !proc_create_net_single_write("rootcell", 0644, p,
					  afs_proc_rootcell_show,
					  afs_proc_rootcell_write,
					  NULL) ||
	    !proc_create_net("servers", 0444, p, &afs_proc_servers_ops,
			     sizeof(struct seq_net_private)) ||
	    !proc_create_net_single("stats", 0444, p, afs_proc_stats_show, NULL) ||
	    !proc_create_net_data_write("sysname", 0644, p,
					&afs_proc_sysname_ops,
					afs_proc_sysname_write,
					sizeof(struct seq_net_private),
					NULL))
		goto error_tree;

	net->proc_afs = p;
	_leave(" = 0");
	return 0;

error_tree:
	proc_remove(p);
error_dir:
	_leave(" = -ENOMEM");
	return -ENOMEM;
}

/*
 * clean up the /proc/fs/afs/ directory
 */
void afs_proc_cleanup(struct afs_net *net)
{
	proc_remove(net->proc_afs);
	net->proc_afs = NULL;
}