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11#include <linux/init.h>
12#include <linux/proc_fs.h>
13#include <linux/seq_file.h>
14#include <net/net_namespace.h>
15#include <net/sock.h>
16#include <linux/atalk.h>
17
18
19static __inline__ struct atalk_iface *atalk_get_interface_idx(loff_t pos)
20{
21 struct atalk_iface *i;
22
23 for (i = atalk_interfaces; pos && i; i = i->next)
24 --pos;
25
26 return i;
27}
28
29static void *atalk_seq_interface_start(struct seq_file *seq, loff_t *pos)
30 __acquires(atalk_interfaces_lock)
31{
32 loff_t l = *pos;
33
34 read_lock_bh(&atalk_interfaces_lock);
35 return l ? atalk_get_interface_idx(--l) : SEQ_START_TOKEN;
36}
37
38static void *atalk_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos)
39{
40 struct atalk_iface *i;
41
42 ++*pos;
43 if (v == SEQ_START_TOKEN) {
44 i = NULL;
45 if (atalk_interfaces)
46 i = atalk_interfaces;
47 goto out;
48 }
49 i = v;
50 i = i->next;
51out:
52 return i;
53}
54
55static void atalk_seq_interface_stop(struct seq_file *seq, void *v)
56 __releases(atalk_interfaces_lock)
57{
58 read_unlock_bh(&atalk_interfaces_lock);
59}
60
61static int atalk_seq_interface_show(struct seq_file *seq, void *v)
62{
63 struct atalk_iface *iface;
64
65 if (v == SEQ_START_TOKEN) {
66 seq_puts(seq, "Interface Address Networks "
67 "Status\n");
68 goto out;
69 }
70
71 iface = v;
72 seq_printf(seq, "%-16s %04X:%02X %04X-%04X %d\n",
73 iface->dev->name, ntohs(iface->address.s_net),
74 iface->address.s_node, ntohs(iface->nets.nr_firstnet),
75 ntohs(iface->nets.nr_lastnet), iface->status);
76out:
77 return 0;
78}
79
80static __inline__ struct atalk_route *atalk_get_route_idx(loff_t pos)
81{
82 struct atalk_route *r;
83
84 for (r = atalk_routes; pos && r; r = r->next)
85 --pos;
86
87 return r;
88}
89
90static void *atalk_seq_route_start(struct seq_file *seq, loff_t *pos)
91 __acquires(atalk_routes_lock)
92{
93 loff_t l = *pos;
94
95 read_lock_bh(&atalk_routes_lock);
96 return l ? atalk_get_route_idx(--l) : SEQ_START_TOKEN;
97}
98
99static void *atalk_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
100{
101 struct atalk_route *r;
102
103 ++*pos;
104 if (v == SEQ_START_TOKEN) {
105 r = NULL;
106 if (atalk_routes)
107 r = atalk_routes;
108 goto out;
109 }
110 r = v;
111 r = r->next;
112out:
113 return r;
114}
115
116static void atalk_seq_route_stop(struct seq_file *seq, void *v)
117 __releases(atalk_routes_lock)
118{
119 read_unlock_bh(&atalk_routes_lock);
120}
121
122static int atalk_seq_route_show(struct seq_file *seq, void *v)
123{
124 struct atalk_route *rt;
125
126 if (v == SEQ_START_TOKEN) {
127 seq_puts(seq, "Target Router Flags Dev\n");
128 goto out;
129 }
130
131 if (atrtr_default.dev) {
132 rt = &atrtr_default;
133 seq_printf(seq, "Default %04X:%02X %-4d %s\n",
134 ntohs(rt->gateway.s_net), rt->gateway.s_node,
135 rt->flags, rt->dev->name);
136 }
137
138 rt = v;
139 seq_printf(seq, "%04X:%02X %04X:%02X %-4d %s\n",
140 ntohs(rt->target.s_net), rt->target.s_node,
141 ntohs(rt->gateway.s_net), rt->gateway.s_node,
142 rt->flags, rt->dev->name);
143out:
144 return 0;
145}
146
147static __inline__ struct sock *atalk_get_socket_idx(loff_t pos)
148{
149 struct sock *s;
150 struct hlist_node *node;
151
152 sk_for_each(s, node, &atalk_sockets)
153 if (!pos--)
154 goto found;
155 s = NULL;
156found:
157 return s;
158}
159
160static void *atalk_seq_socket_start(struct seq_file *seq, loff_t *pos)
161 __acquires(atalk_sockets_lock)
162{
163 loff_t l = *pos;
164
165 read_lock_bh(&atalk_sockets_lock);
166 return l ? atalk_get_socket_idx(--l) : SEQ_START_TOKEN;
167}
168
169static void *atalk_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
170{
171 struct sock *i;
172
173 ++*pos;
174 if (v == SEQ_START_TOKEN) {
175 i = sk_head(&atalk_sockets);
176 goto out;
177 }
178 i = sk_next(v);
179out:
180 return i;
181}
182
183static void atalk_seq_socket_stop(struct seq_file *seq, void *v)
184 __releases(atalk_sockets_lock)
185{
186 read_unlock_bh(&atalk_sockets_lock);
187}
188
189static int atalk_seq_socket_show(struct seq_file *seq, void *v)
190{
191 struct sock *s;
192 struct atalk_sock *at;
193
194 if (v == SEQ_START_TOKEN) {
195 seq_printf(seq, "Type Local_addr Remote_addr Tx_queue "
196 "Rx_queue St UID\n");
197 goto out;
198 }
199
200 s = v;
201 at = at_sk(s);
202
203 seq_printf(seq, "%02X %04X:%02X:%02X %04X:%02X:%02X %08X:%08X "
204 "%02X %d\n",
205 s->sk_type, ntohs(at->src_net), at->src_node, at->src_port,
206 ntohs(at->dest_net), at->dest_node, at->dest_port,
207 atomic_read(&s->sk_wmem_alloc),
208 atomic_read(&s->sk_rmem_alloc),
209 s->sk_state, SOCK_INODE(s->sk_socket)->i_uid);
210out:
211 return 0;
212}
213
214static const struct seq_operations atalk_seq_interface_ops = {
215 .start = atalk_seq_interface_start,
216 .next = atalk_seq_interface_next,
217 .stop = atalk_seq_interface_stop,
218 .show = atalk_seq_interface_show,
219};
220
221static const struct seq_operations atalk_seq_route_ops = {
222 .start = atalk_seq_route_start,
223 .next = atalk_seq_route_next,
224 .stop = atalk_seq_route_stop,
225 .show = atalk_seq_route_show,
226};
227
228static const struct seq_operations atalk_seq_socket_ops = {
229 .start = atalk_seq_socket_start,
230 .next = atalk_seq_socket_next,
231 .stop = atalk_seq_socket_stop,
232 .show = atalk_seq_socket_show,
233};
234
235static int atalk_seq_interface_open(struct inode *inode, struct file *file)
236{
237 return seq_open(file, &atalk_seq_interface_ops);
238}
239
240static int atalk_seq_route_open(struct inode *inode, struct file *file)
241{
242 return seq_open(file, &atalk_seq_route_ops);
243}
244
245static int atalk_seq_socket_open(struct inode *inode, struct file *file)
246{
247 return seq_open(file, &atalk_seq_socket_ops);
248}
249
250static const struct file_operations atalk_seq_interface_fops = {
251 .owner = THIS_MODULE,
252 .open = atalk_seq_interface_open,
253 .read = seq_read,
254 .llseek = seq_lseek,
255 .release = seq_release,
256};
257
258static const struct file_operations atalk_seq_route_fops = {
259 .owner = THIS_MODULE,
260 .open = atalk_seq_route_open,
261 .read = seq_read,
262 .llseek = seq_lseek,
263 .release = seq_release,
264};
265
266static const struct file_operations atalk_seq_socket_fops = {
267 .owner = THIS_MODULE,
268 .open = atalk_seq_socket_open,
269 .read = seq_read,
270 .llseek = seq_lseek,
271 .release = seq_release,
272};
273
274static struct proc_dir_entry *atalk_proc_dir;
275
276int __init atalk_proc_init(void)
277{
278 struct proc_dir_entry *p;
279 int rc = -ENOMEM;
280
281 atalk_proc_dir = proc_mkdir("atalk", init_net.proc_net);
282 if (!atalk_proc_dir)
283 goto out;
284 atalk_proc_dir->owner = THIS_MODULE;
285
286 p = proc_create("interface", S_IRUGO, atalk_proc_dir,
287 &atalk_seq_interface_fops);
288 if (!p)
289 goto out_interface;
290
291 p = proc_create("route", S_IRUGO, atalk_proc_dir,
292 &atalk_seq_route_fops);
293 if (!p)
294 goto out_route;
295
296 p = proc_create("socket", S_IRUGO, atalk_proc_dir,
297 &atalk_seq_socket_fops);
298 if (!p)
299 goto out_socket;
300
301 p = proc_create("arp", S_IRUGO, atalk_proc_dir, &atalk_seq_arp_fops);
302 if (!p)
303 goto out_arp;
304
305 rc = 0;
306out:
307 return rc;
308out_arp:
309 remove_proc_entry("socket", atalk_proc_dir);
310out_socket:
311 remove_proc_entry("route", atalk_proc_dir);
312out_route:
313 remove_proc_entry("interface", atalk_proc_dir);
314out_interface:
315 remove_proc_entry("atalk", init_net.proc_net);
316 goto out;
317}
318
319void __exit atalk_proc_exit(void)
320{
321 remove_proc_entry("interface", atalk_proc_dir);
322 remove_proc_entry("route", atalk_proc_dir);
323 remove_proc_entry("socket", atalk_proc_dir);
324 remove_proc_entry("arp", atalk_proc_dir);
325 remove_proc_entry("atalk", init_net.proc_net);
326}