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