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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * atalk_proc.c - proc support for Appletalk
3 *
4 * Copyright(c) Arnaldo Carvalho de Melo <acme@conectiva.com.br>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation, version 2.
9 */
10
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#include <linux/init.h>
12#include <linux/proc_fs.h>
13#include <linux/seq_file.h>
14#include <net/sock.h>
15#include <linux/atalk.h>
16
17
18static __inline__ struct atalk_iface *atalk_get_interface_idx(loff_t pos)
19{
20 struct atalk_iface *i;
21
22 for (i = atalk_interfaces; pos && i; i = i->next)
23 --pos;
24
25 return i;
26}
27
28static void *atalk_seq_interface_start(struct seq_file *seq, loff_t *pos)
29{
30 loff_t l = *pos;
31
32 read_lock_bh(&atalk_interfaces_lock);
33 return l ? atalk_get_interface_idx(--l) : SEQ_START_TOKEN;
34}
35
36static void *atalk_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos)
37{
38 struct atalk_iface *i;
39
40 ++*pos;
41 if (v == SEQ_START_TOKEN) {
42 i = NULL;
43 if (atalk_interfaces)
44 i = atalk_interfaces;
45 goto out;
46 }
47 i = v;
48 i = i->next;
49out:
50 return i;
51}
52
53static void atalk_seq_interface_stop(struct seq_file *seq, void *v)
54{
55 read_unlock_bh(&atalk_interfaces_lock);
56}
57
58static int atalk_seq_interface_show(struct seq_file *seq, void *v)
59{
60 struct atalk_iface *iface;
61
62 if (v == SEQ_START_TOKEN) {
63 seq_puts(seq, "Interface Address Networks "
64 "Status\n");
65 goto out;
66 }
67
68 iface = v;
69 seq_printf(seq, "%-16s %04X:%02X %04X-%04X %d\n",
70 iface->dev->name, ntohs(iface->address.s_net),
71 iface->address.s_node, ntohs(iface->nets.nr_firstnet),
72 ntohs(iface->nets.nr_lastnet), iface->status);
73out:
74 return 0;
75}
76
77static __inline__ struct atalk_route *atalk_get_route_idx(loff_t pos)
78{
79 struct atalk_route *r;
80
81 for (r = atalk_routes; pos && r; r = r->next)
82 --pos;
83
84 return r;
85}
86
87static void *atalk_seq_route_start(struct seq_file *seq, loff_t *pos)
88{
89 loff_t l = *pos;
90
91 read_lock_bh(&atalk_routes_lock);
92 return l ? atalk_get_route_idx(--l) : SEQ_START_TOKEN;
93}
94
95static void *atalk_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
96{
97 struct atalk_route *r;
98
99 ++*pos;
100 if (v == SEQ_START_TOKEN) {
101 r = NULL;
102 if (atalk_routes)
103 r = atalk_routes;
104 goto out;
105 }
106 r = v;
107 r = r->next;
108out:
109 return r;
110}
111
112static void atalk_seq_route_stop(struct seq_file *seq, void *v)
113{
114 read_unlock_bh(&atalk_routes_lock);
115}
116
117static int atalk_seq_route_show(struct seq_file *seq, void *v)
118{
119 struct atalk_route *rt;
120
121 if (v == SEQ_START_TOKEN) {
122 seq_puts(seq, "Target Router Flags Dev\n");
123 goto out;
124 }
125
126 if (atrtr_default.dev) {
127 rt = &atrtr_default;
128 seq_printf(seq, "Default %04X:%02X %-4d %s\n",
129 ntohs(rt->gateway.s_net), rt->gateway.s_node,
130 rt->flags, rt->dev->name);
131 }
132
133 rt = v;
134 seq_printf(seq, "%04X:%02X %04X:%02X %-4d %s\n",
135 ntohs(rt->target.s_net), rt->target.s_node,
136 ntohs(rt->gateway.s_net), rt->gateway.s_node,
137 rt->flags, rt->dev->name);
138out:
139 return 0;
140}
141
142static __inline__ struct sock *atalk_get_socket_idx(loff_t pos)
143{
144 struct sock *s;
145 struct hlist_node *node;
146
147 sk_for_each(s, node, &atalk_sockets)
148 if (!pos--)
149 goto found;
150 s = NULL;
151found:
152 return s;
153}
154
155static void *atalk_seq_socket_start(struct seq_file *seq, loff_t *pos)
156{
157 loff_t l = *pos;
158
159 read_lock_bh(&atalk_sockets_lock);
160 return l ? atalk_get_socket_idx(--l) : SEQ_START_TOKEN;
161}
162
163static void *atalk_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
164{
165 struct sock *i;
166
167 ++*pos;
168 if (v == SEQ_START_TOKEN) {
169 i = sk_head(&atalk_sockets);
170 goto out;
171 }
172 i = sk_next(v);
173out:
174 return i;
175}
176
177static void atalk_seq_socket_stop(struct seq_file *seq, void *v)
178{
179 read_unlock_bh(&atalk_sockets_lock);
180}
181
182static int atalk_seq_socket_show(struct seq_file *seq, void *v)
183{
184 struct sock *s;
185 struct atalk_sock *at;
186
187 if (v == SEQ_START_TOKEN) {
188 seq_printf(seq, "Type Local_addr Remote_addr Tx_queue "
189 "Rx_queue St UID\n");
190 goto out;
191 }
192
193 s = v;
194 at = at_sk(s);
195
196 seq_printf(seq, "%02X %04X:%02X:%02X %04X:%02X:%02X %08X:%08X "
197 "%02X %d\n",
198 s->sk_type, ntohs(at->src_net), at->src_node, at->src_port,
199 ntohs(at->dest_net), at->dest_node, at->dest_port,
200 atomic_read(&s->sk_wmem_alloc),
201 atomic_read(&s->sk_rmem_alloc),
202 s->sk_state, SOCK_INODE(s->sk_socket)->i_uid);
203out:
204 return 0;
205}
206
Philippe De Muyter56b3d972007-07-10 23:07:31 -0700207static const struct seq_operations atalk_seq_interface_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 .start = atalk_seq_interface_start,
209 .next = atalk_seq_interface_next,
210 .stop = atalk_seq_interface_stop,
211 .show = atalk_seq_interface_show,
212};
213
Philippe De Muyter56b3d972007-07-10 23:07:31 -0700214static const struct seq_operations atalk_seq_route_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215 .start = atalk_seq_route_start,
216 .next = atalk_seq_route_next,
217 .stop = atalk_seq_route_stop,
218 .show = atalk_seq_route_show,
219};
220
Philippe De Muyter56b3d972007-07-10 23:07:31 -0700221static const struct seq_operations atalk_seq_socket_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 .start = atalk_seq_socket_start,
223 .next = atalk_seq_socket_next,
224 .stop = atalk_seq_socket_stop,
225 .show = atalk_seq_socket_show,
226};
227
228static int atalk_seq_interface_open(struct inode *inode, struct file *file)
229{
230 return seq_open(file, &atalk_seq_interface_ops);
231}
232
233static int atalk_seq_route_open(struct inode *inode, struct file *file)
234{
235 return seq_open(file, &atalk_seq_route_ops);
236}
237
238static int atalk_seq_socket_open(struct inode *inode, struct file *file)
239{
240 return seq_open(file, &atalk_seq_socket_ops);
241}
242
Arjan van de Ven9a321442007-02-12 00:55:35 -0800243static const struct file_operations atalk_seq_interface_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 .owner = THIS_MODULE,
245 .open = atalk_seq_interface_open,
246 .read = seq_read,
247 .llseek = seq_lseek,
248 .release = seq_release,
249};
250
Arjan van de Ven9a321442007-02-12 00:55:35 -0800251static const struct file_operations atalk_seq_route_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 .owner = THIS_MODULE,
253 .open = atalk_seq_route_open,
254 .read = seq_read,
255 .llseek = seq_lseek,
256 .release = seq_release,
257};
258
Arjan van de Ven9a321442007-02-12 00:55:35 -0800259static const struct file_operations atalk_seq_socket_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260 .owner = THIS_MODULE,
261 .open = atalk_seq_socket_open,
262 .read = seq_read,
263 .llseek = seq_lseek,
264 .release = seq_release,
265};
266
267static struct proc_dir_entry *atalk_proc_dir;
268
269int __init atalk_proc_init(void)
270{
271 struct proc_dir_entry *p;
272 int rc = -ENOMEM;
273
274 atalk_proc_dir = proc_mkdir("atalk", proc_net);
275 if (!atalk_proc_dir)
276 goto out;
277 atalk_proc_dir->owner = THIS_MODULE;
278
279 p = create_proc_entry("interface", S_IRUGO, atalk_proc_dir);
280 if (!p)
281 goto out_interface;
282 p->proc_fops = &atalk_seq_interface_fops;
283
284 p = create_proc_entry("route", S_IRUGO, atalk_proc_dir);
285 if (!p)
286 goto out_route;
287 p->proc_fops = &atalk_seq_route_fops;
288
289 p = create_proc_entry("socket", S_IRUGO, atalk_proc_dir);
290 if (!p)
291 goto out_socket;
292 p->proc_fops = &atalk_seq_socket_fops;
293
294 p = create_proc_entry("arp", S_IRUGO, atalk_proc_dir);
YOSHIFUJI Hideakied4477b2007-02-09 23:24:27 +0900295 if (!p)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 goto out_arp;
297 p->proc_fops = &atalk_seq_arp_fops;
298
299 rc = 0;
300out:
301 return rc;
302out_arp:
303 remove_proc_entry("socket", atalk_proc_dir);
304out_socket:
305 remove_proc_entry("route", atalk_proc_dir);
306out_route:
307 remove_proc_entry("interface", atalk_proc_dir);
308out_interface:
309 remove_proc_entry("atalk", proc_net);
310 goto out;
311}
312
313void __exit atalk_proc_exit(void)
314{
315 remove_proc_entry("interface", atalk_proc_dir);
316 remove_proc_entry("route", atalk_proc_dir);
317 remove_proc_entry("socket", atalk_proc_dir);
318 remove_proc_entry("arp", atalk_proc_dir);
319 remove_proc_entry("atalk", proc_net);
320}