1 // SPDX-License-Identifier: GPL-2.0-or-later
37 	struct afs_cell *cell;  in afs_proc_cells_show()  local
45 	cell = list_entry(v, struct afs_cell, proc_link);  in afs_proc_cells_show()
46 	vllist = rcu_dereference(cell->vl_servers);  in afs_proc_cells_show()
48 	/* display one cell per line on subsequent lines */  in afs_proc_cells_show()
49 	seq_printf(m, "%3u %3u %6lld %2u %2u %s\n",  in afs_proc_cells_show()
50 		   refcount_read(&cell->ref),  in afs_proc_cells_show()
51 		   atomic_read(&cell->active),  in afs_proc_cells_show()
52 		   cell->dns_expiry - ktime_get_real_seconds(),  in afs_proc_cells_show()
53 		   vllist ? vllist->nr_servers : 0,  in afs_proc_cells_show()
54 		   cell->state,  in afs_proc_cells_show()
55 		   cell->name);  in afs_proc_cells_show()
63 	return seq_hlist_start_head_rcu(&afs_seq2net(m)->proc_cells, *_pos);  in afs_proc_cells_start()
68 	return seq_hlist_next_rcu(v, &afs_seq2net(m)->proc_cells, pos);  in afs_proc_cells_next()
86  * - to add cells: echo "add <cellname> <IP>[:<IP>][:<IP>]"
90 	struct seq_file *m = file->private_data;  in afs_proc_cells_write()
123 		struct afs_cell *cell;  in afs_proc_cells_write()  local
125 		cell = afs_lookup_cell(net, name, strlen(name), args, true);  in afs_proc_cells_write()
126 		if (IS_ERR(cell)) {  in afs_proc_cells_write()
127 			ret = PTR_ERR(cell);  in afs_proc_cells_write()
131 		if (test_and_set_bit(AFS_CELL_FL_NO_GC, &cell->flags))  in afs_proc_cells_write()
132 			afs_unuse_cell(net, cell, afs_cell_trace_unuse_no_pin);  in afs_proc_cells_write()
144 	ret = -EINVAL;  in afs_proc_cells_write()
150  * Display the name of the current workstation cell.
154 	struct afs_cell *cell;  in afs_proc_rootcell_show()  local
158 	down_read(&net->cells_lock);  in afs_proc_rootcell_show()
159 	cell = net->ws_cell;  in afs_proc_rootcell_show()
160 	if (cell)  in afs_proc_rootcell_show()
161 		seq_printf(m, "%s\n", cell->name);  in afs_proc_rootcell_show()
162 	up_read(&net->cells_lock);  in afs_proc_rootcell_show()
167  * Set the current workstation cell and optionally supply its list of volume
170  *	echo "cell.name:192.168.231.14" >/proc/fs/afs/rootcell
174 	struct seq_file *m = file->private_data;  in afs_proc_rootcell_write()
179 	ret = -EINVAL;  in afs_proc_rootcell_write()
207  * Display the list of volumes known to a cell.
220 		   refcount_read(&vol->ref), vol->vid,  in afs_proc_cell_volumes_show()
221 		   afs_vol_types[vol->type],  in afs_proc_cell_volumes_show()
222 		   vol->name);  in afs_proc_cell_volumes_show()
228 	__acquires(cell->proc_lock)  in afs_proc_cell_volumes_start()
230 	struct afs_cell *cell = pde_data(file_inode(m->file));  in afs_proc_cell_volumes_start()  local
233 	return seq_hlist_start_head_rcu(&cell->proc_volumes, *_pos);  in afs_proc_cell_volumes_start()
239 	struct afs_cell *cell = pde_data(file_inode(m->file));  in afs_proc_cell_volumes_next()  local
241 	return seq_hlist_next_rcu(v, &cell->proc_volumes, _pos);  in afs_proc_cell_volumes_next()
245 	__releases(cell->proc_lock)  in afs_proc_cell_volumes_stop()
268 	[DNS_LOOKUP_NOT_DONE]		= "no-lookup",
272 	[DNS_LOOKUP_GOT_NOT_FOUND]	= "not-found",
273 	[DNS_LOOKUP_GOT_LOCAL_FAILURE]	= "local-failure",
274 	[DNS_LOOKUP_GOT_TEMP_FAILURE]	= "temp-failure",
275 	[DNS_LOOKUP_GOT_NS_FAILURE]	= "ns-failure",
280  * Display the list of Volume Location servers we're using for a cell.
284 	const struct afs_vl_seq_net_private *priv = m->private;  in afs_proc_cell_vlservers_show()
285 	const struct afs_vlserver_list *vllist = priv->vllist;  in afs_proc_cell_vlservers_show()
293 			   dns_record_sources[vllist ? vllist->source : 0],  in afs_proc_cell_vlservers_show()
294 			   dns_lookup_statuses[vllist ? vllist->status : 0]);  in afs_proc_cell_vlservers_show()
299 	vlserver = entry->server;  in afs_proc_cell_vlservers_show()
300 	alist = rcu_dereference(vlserver->addresses);  in afs_proc_cell_vlservers_show()
303 		   vlserver->name, entry->priority, entry->weight,  in afs_proc_cell_vlservers_show()
304 		   dns_record_sources[alist ? alist->source : entry->source],  in afs_proc_cell_vlservers_show()
305 		   dns_lookup_statuses[alist ? alist->status : entry->status]);  in afs_proc_cell_vlservers_show()
307 		for (i = 0; i < alist->nr_addrs; i++)  in afs_proc_cell_vlservers_show()
309 				   alist->preferred == i ? '>' : '-',  in afs_proc_cell_vlservers_show()
310 				   &alist->addrs[i].transport);  in afs_proc_cell_vlservers_show()
312 	seq_printf(m, " info: fl=%lx rtt=%d\n", vlserver->flags, vlserver->rtt);  in afs_proc_cell_vlservers_show()
314 		   vlserver->probe.flags, vlserver->probe.error,  in afs_proc_cell_vlservers_show()
315 		   vlserver->probe.abort_code,  in afs_proc_cell_vlservers_show()
316 		   atomic_read(&vlserver->probe_outstanding));  in afs_proc_cell_vlservers_show()
323 	struct afs_vl_seq_net_private *priv = m->private;  in afs_proc_cell_vlservers_start()
325 	struct afs_cell *cell = pde_data(file_inode(m->file));  in afs_proc_cell_vlservers_start()  local
330 	vllist = rcu_dereference(cell->vl_servers);  in afs_proc_cell_vlservers_start()
331 	priv->vllist = vllist;  in afs_proc_cell_vlservers_start()
338 	if (pos - 1 >= vllist->nr_servers)  in afs_proc_cell_vlservers_start()
341 	return &vllist->servers[pos - 1];  in afs_proc_cell_vlservers_start()
347 	struct afs_vl_seq_net_private *priv = m->private;  in afs_proc_cell_vlservers_next()
348 	struct afs_vlserver_list *vllist = priv->vllist;  in afs_proc_cell_vlservers_next()
354 	if (!vllist || pos - 1 >= vllist->nr_servers)  in afs_proc_cell_vlservers_next()
357 	return &vllist->servers[pos - 1];  in afs_proc_cell_vlservers_next()
388 	alist = rcu_dereference(server->addresses);  in afs_proc_servers_show()
390 		   &server->uuid,  in afs_proc_servers_show()
391 		   refcount_read(&server->ref),  in afs_proc_servers_show()
392 		   atomic_read(&server->active));  in afs_proc_servers_show()
393 	seq_printf(m, "  - info: fl=%lx rtt=%u brk=%x\n",  in afs_proc_servers_show()
394 		   server->flags, server->rtt, server->cb_s_break);  in afs_proc_servers_show()
395 	seq_printf(m, "  - probe: last=%d out=%d\n",  in afs_proc_servers_show()
396 		   (int)(jiffies - server->probed_at) / HZ,  in afs_proc_servers_show()
397 		   atomic_read(&server->probe_outstanding));  in afs_proc_servers_show()
398 	seq_printf(m, "  - ALIST v=%u rsp=%lx f=%lx\n",  in afs_proc_servers_show()
399 		   alist->version, alist->responded, alist->failed);  in afs_proc_servers_show()
400 	for (i = 0; i < alist->nr_addrs; i++)  in afs_proc_servers_show()
402 			   i, &alist->addrs[i].transport,  in afs_proc_servers_show()
403 			   alist->preferred == i ? "*" : "");  in afs_proc_servers_show()
411 	return seq_hlist_start_head_rcu(&afs_seq2net(m)->fs_proc, *_pos);  in afs_proc_servers_start()
416 	return seq_hlist_next_rcu(v, &afs_seq2net(m)->fs_proc, _pos);  in afs_proc_servers_next()
439 	struct afs_sysnames *sysnames = net->sysnames;  in afs_proc_sysname_show()
440 	unsigned int i = (unsigned long)v - 1;  in afs_proc_sysname_show()
442 	if (i < sysnames->nr)  in afs_proc_sysname_show()
443 		seq_printf(m, "%s\n", sysnames->subs[i]);  in afs_proc_sysname_show()
448 	__acquires(&net->sysnames_lock)  in afs_proc_sysname_start()
453 	read_lock(&net->sysnames_lock);  in afs_proc_sysname_start()
455 	names = net->sysnames;  in afs_proc_sysname_start()
456 	if (*pos >= names->nr)  in afs_proc_sysname_start()
464 	struct afs_sysnames *names = net->sysnames;  in afs_proc_sysname_next()
467 	if (*pos >= names->nr)  in afs_proc_sysname_next()
473 	__releases(&net->sysnames_lock)  in afs_proc_sysname_stop()
477 	read_unlock(&net->sysnames_lock);  in afs_proc_sysname_stop()
493 	struct seq_file *m = file->private_data;  in afs_proc_sysname_write()
500 		return -ENOMEM;  in afs_proc_sysname_write()
501 	refcount_set(&sysnames->usage, 1);  in afs_proc_sysname_write()
509 		ret = -ENAMETOOLONG;  in afs_proc_sysname_write()
514 		    s[len - 4] == '@' &&  in afs_proc_sysname_write()
515 		    s[len - 3] == 's' &&  in afs_proc_sysname_write()
516 		    s[len - 2] == 'y' &&  in afs_proc_sysname_write()
517 		    s[len - 1] == 's')  in afs_proc_sysname_write()
522 		    (len < 2 || (len == 2 && s[1] == '.')))  in afs_proc_sysname_write()
528 		ret = -EFBIG;  in afs_proc_sysname_write()
529 		if (sysnames->nr >= AFS_NR_SYSNAME)  in afs_proc_sysname_write()
535 			ret = -ENOMEM;  in afs_proc_sysname_write()
541 		sysnames->subs[sysnames->nr] = sub;  in afs_proc_sysname_write()
542 		sysnames->nr++;  in afs_proc_sysname_write()
545 	if (sysnames->nr == 0) {  in afs_proc_sysname_write()
546 		sysnames->subs[0] = sysnames->blank;  in afs_proc_sysname_write()
547 		sysnames->nr++;  in afs_proc_sysname_write()
550 	write_lock(&net->sysnames_lock);  in afs_proc_sysname_write()
551 	kill = net->sysnames;  in afs_proc_sysname_write()
552 	net->sysnames = sysnames;  in afs_proc_sysname_write()
553 	write_unlock(&net->sysnames_lock);  in afs_proc_sysname_write()
560 	ret = -EINVAL;  in afs_proc_sysname_write()
569 	if (sysnames && refcount_dec_and_test(&sysnames->usage)) {  in afs_put_sysnames()
570 		for (i = 0; i < sysnames->nr; i++)  in afs_put_sysnames()
571 			if (sysnames->subs[i] != afs_init_sysname &&  in afs_put_sysnames()
572 			    sysnames->subs[i] != sysnames->blank)  in afs_put_sysnames()
573 				kfree(sysnames->subs[i]);  in afs_put_sysnames()
579  * Display general per-net namespace statistics
587 	seq_printf(m, "dir-mgmt: look=%u reval=%u inval=%u relpg=%u\n",  in afs_proc_stats_show()
588 		   atomic_read(&net->n_lookup),  in afs_proc_stats_show()
589 		   atomic_read(&net->n_reval),  in afs_proc_stats_show()
590 		   atomic_read(&net->n_inval),  in afs_proc_stats_show()
591 		   atomic_read(&net->n_relpg));  in afs_proc_stats_show()
593 	seq_printf(m, "dir-data: rdpg=%u\n",  in afs_proc_stats_show()
594 		   atomic_read(&net->n_read_dir));  in afs_proc_stats_show()
596 	seq_printf(m, "dir-edit: cr=%u rm=%u\n",  in afs_proc_stats_show()
597 		   atomic_read(&net->n_dir_cr),  in afs_proc_stats_show()
598 		   atomic_read(&net->n_dir_rm));  in afs_proc_stats_show()
600 	seq_printf(m, "file-rd : n=%u nb=%lu\n",  in afs_proc_stats_show()
601 		   atomic_read(&net->n_fetches),  in afs_proc_stats_show()
602 		   atomic_long_read(&net->n_fetch_bytes));  in afs_proc_stats_show()
603 	seq_printf(m, "file-wr : n=%u nb=%lu\n",  in afs_proc_stats_show()
604 		   atomic_read(&net->n_stores),  in afs_proc_stats_show()
605 		   atomic_long_read(&net->n_store_bytes));  in afs_proc_stats_show()
610  * initialise /proc/fs/afs/<cell>/
612 int afs_proc_cell_setup(struct afs_cell *cell)  in afs_proc_cell_setup()  argument
615 	struct afs_net *net = cell->net;  in afs_proc_cell_setup()
617 	_enter("%p{%s},%p", cell, cell->name, net->proc_afs);  in afs_proc_cell_setup()
619 	dir = proc_net_mkdir(net->net, cell->name, net->proc_afs);  in afs_proc_cell_setup()
626 				  cell) ||  in afs_proc_cell_setup()
630 				  cell))  in afs_proc_cell_setup()
637 	remove_proc_subtree(cell->name, net->proc_afs);  in afs_proc_cell_setup()
639 	_leave(" = -ENOMEM");  in afs_proc_cell_setup()
640 	return -ENOMEM;  in afs_proc_cell_setup()
644  * remove /proc/fs/afs/<cell>/
646 void afs_proc_cell_remove(struct afs_cell *cell)  in afs_proc_cell_remove()  argument
648 	struct afs_net *net = cell->net;  in afs_proc_cell_remove()
651 	remove_proc_subtree(cell->name, net->proc_afs);  in afs_proc_cell_remove()
664 	p = proc_net_mkdir(net->net, "afs", net->net->proc_net);  in afs_proc_init()
687 	net->proc_afs = p;  in afs_proc_init()
694 	_leave(" = -ENOMEM");  in afs_proc_init()
695 	return -ENOMEM;  in afs_proc_init()
703 	proc_remove(net->proc_afs);  in afs_proc_cleanup()
704 	net->proc_afs = NULL;  in afs_proc_cleanup()