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8#include <linux/init.h>
9#include <linux/proc_fs.h>
10#include <linux/seq_file.h>
11#include <net/net_namespace.h>
12#include <net/sock.h>
13#include <linux/atalk.h>
14#include <linux/export.h>
15
16
17static __inline__ struct atalk_iface *atalk_get_interface_idx(loff_t pos)
18{
19 struct atalk_iface *i;
20
21 for (i = atalk_interfaces; pos && i; i = i->next)
22 --pos;
23
24 return i;
25}
26
27static void *atalk_seq_interface_start(struct seq_file *seq, loff_t *pos)
28 __acquires(atalk_interfaces_lock)
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 __releases(atalk_interfaces_lock)
55{
56 read_unlock_bh(&atalk_interfaces_lock);
57}
58
59static int atalk_seq_interface_show(struct seq_file *seq, void *v)
60{
61 struct atalk_iface *iface;
62
63 if (v == SEQ_START_TOKEN) {
64 seq_puts(seq, "Interface Address Networks "
65 "Status\n");
66 goto out;
67 }
68
69 iface = v;
70 seq_printf(seq, "%-16s %04X:%02X %04X-%04X %d\n",
71 iface->dev->name, ntohs(iface->address.s_net),
72 iface->address.s_node, ntohs(iface->nets.nr_firstnet),
73 ntohs(iface->nets.nr_lastnet), iface->status);
74out:
75 return 0;
76}
77
78static __inline__ struct atalk_route *atalk_get_route_idx(loff_t pos)
79{
80 struct atalk_route *r;
81
82 for (r = atalk_routes; pos && r; r = r->next)
83 --pos;
84
85 return r;
86}
87
88static void *atalk_seq_route_start(struct seq_file *seq, loff_t *pos)
89 __acquires(atalk_routes_lock)
90{
91 loff_t l = *pos;
92
93 read_lock_bh(&atalk_routes_lock);
94 return l ? atalk_get_route_idx(--l) : SEQ_START_TOKEN;
95}
96
97static void *atalk_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
98{
99 struct atalk_route *r;
100
101 ++*pos;
102 if (v == SEQ_START_TOKEN) {
103 r = NULL;
104 if (atalk_routes)
105 r = atalk_routes;
106 goto out;
107 }
108 r = v;
109 r = r->next;
110out:
111 return r;
112}
113
114static void atalk_seq_route_stop(struct seq_file *seq, void *v)
115 __releases(atalk_routes_lock)
116{
117 read_unlock_bh(&atalk_routes_lock);
118}
119
120static int atalk_seq_route_show(struct seq_file *seq, void *v)
121{
122 struct atalk_route *rt;
123
124 if (v == SEQ_START_TOKEN) {
125 seq_puts(seq, "Target Router Flags Dev\n");
126 goto out;
127 }
128
129 if (atrtr_default.dev) {
130 rt = &atrtr_default;
131 seq_printf(seq, "Default %04X:%02X %-4d %s\n",
132 ntohs(rt->gateway.s_net), rt->gateway.s_node,
133 rt->flags, rt->dev->name);
134 }
135
136 rt = v;
137 seq_printf(seq, "%04X:%02X %04X:%02X %-4d %s\n",
138 ntohs(rt->target.s_net), rt->target.s_node,
139 ntohs(rt->gateway.s_net), rt->gateway.s_node,
140 rt->flags, rt->dev->name);
141out:
142 return 0;
143}
144
145static void *atalk_seq_socket_start(struct seq_file *seq, loff_t *pos)
146 __acquires(atalk_sockets_lock)
147{
148 read_lock_bh(&atalk_sockets_lock);
149 return seq_hlist_start_head(&atalk_sockets, *pos);
150}
151
152static void *atalk_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
153{
154 return seq_hlist_next(v, &atalk_sockets, pos);
155}
156
157static void atalk_seq_socket_stop(struct seq_file *seq, void *v)
158 __releases(atalk_sockets_lock)
159{
160 read_unlock_bh(&atalk_sockets_lock);
161}
162
163static int atalk_seq_socket_show(struct seq_file *seq, void *v)
164{
165 struct sock *s;
166 struct atalk_sock *at;
167
168 if (v == SEQ_START_TOKEN) {
169 seq_printf(seq, "Type Local_addr Remote_addr Tx_queue "
170 "Rx_queue St UID\n");
171 goto out;
172 }
173
174 s = sk_entry(v);
175 at = at_sk(s);
176
177 seq_printf(seq, "%02X %04X:%02X:%02X %04X:%02X:%02X %08X:%08X "
178 "%02X %u\n",
179 s->sk_type, ntohs(at->src_net), at->src_node, at->src_port,
180 ntohs(at->dest_net), at->dest_node, at->dest_port,
181 sk_wmem_alloc_get(s),
182 sk_rmem_alloc_get(s),
183 s->sk_state,
184 from_kuid_munged(seq_user_ns(seq), sock_i_uid(s)));
185out:
186 return 0;
187}
188
189static const struct seq_operations atalk_seq_interface_ops = {
190 .start = atalk_seq_interface_start,
191 .next = atalk_seq_interface_next,
192 .stop = atalk_seq_interface_stop,
193 .show = atalk_seq_interface_show,
194};
195
196static const struct seq_operations atalk_seq_route_ops = {
197 .start = atalk_seq_route_start,
198 .next = atalk_seq_route_next,
199 .stop = atalk_seq_route_stop,
200 .show = atalk_seq_route_show,
201};
202
203static const struct seq_operations atalk_seq_socket_ops = {
204 .start = atalk_seq_socket_start,
205 .next = atalk_seq_socket_next,
206 .stop = atalk_seq_socket_stop,
207 .show = atalk_seq_socket_show,
208};
209
210int __init atalk_proc_init(void)
211{
212 if (!proc_mkdir("atalk", init_net.proc_net))
213 return -ENOMEM;
214
215 if (!proc_create_seq("atalk/interface", 0444, init_net.proc_net,
216 &atalk_seq_interface_ops))
217 goto out;
218
219 if (!proc_create_seq("atalk/route", 0444, init_net.proc_net,
220 &atalk_seq_route_ops))
221 goto out;
222
223 if (!proc_create_seq("atalk/socket", 0444, init_net.proc_net,
224 &atalk_seq_socket_ops))
225 goto out;
226
227 if (!proc_create_seq_private("atalk/arp", 0444, init_net.proc_net,
228 &aarp_seq_ops,
229 sizeof(struct aarp_iter_state), NULL))
230 goto out;
231
232 return 0;
233
234out:
235 remove_proc_subtree("atalk", init_net.proc_net);
236 return -ENOMEM;
237}
238
239void atalk_proc_exit(void)
240{
241 remove_proc_subtree("atalk", init_net.proc_net);
242}
243
