1 /*
2 * IPX proc routines
3 *
4 * Copyright(C) Arnaldo Carvalho de Melo <acme@conectiva.com.br>, 2002
5 */
6
7 #include <linux/init.h>
8 #ifdef CONFIG_PROC_FS
9 #include <linux/proc_fs.h>
10 #include <linux/spinlock.h>
11 #include <linux/seq_file.h>
12 #include <linux/export.h>
13 #include <net/net_namespace.h>
14 #include <net/tcp_states.h>
15 #include <net/ipx.h>
16
ipx_seq_interface_start(struct seq_file * seq,loff_t * pos)17 static void *ipx_seq_interface_start(struct seq_file *seq, loff_t *pos)
18 {
19 spin_lock_bh(&ipx_interfaces_lock);
20 return seq_list_start_head(&ipx_interfaces, *pos);
21 }
22
ipx_seq_interface_next(struct seq_file * seq,void * v,loff_t * pos)23 static void *ipx_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos)
24 {
25 return seq_list_next(v, &ipx_interfaces, pos);
26 }
27
ipx_seq_interface_stop(struct seq_file * seq,void * v)28 static void ipx_seq_interface_stop(struct seq_file *seq, void *v)
29 {
30 spin_unlock_bh(&ipx_interfaces_lock);
31 }
32
ipx_seq_interface_show(struct seq_file * seq,void * v)33 static int ipx_seq_interface_show(struct seq_file *seq, void *v)
34 {
35 struct ipx_interface *i;
36
37 if (v == &ipx_interfaces) {
38 seq_puts(seq, "Network Node_Address Primary Device "
39 "Frame_Type");
40 #ifdef IPX_REFCNT_DEBUG
41 seq_puts(seq, " refcnt");
42 #endif
43 seq_puts(seq, "\n");
44 goto out;
45 }
46
47 i = list_entry(v, struct ipx_interface, node);
48 seq_printf(seq, "%08lX ", (unsigned long int)ntohl(i->if_netnum));
49 seq_printf(seq, "%02X%02X%02X%02X%02X%02X ",
50 i->if_node[0], i->if_node[1], i->if_node[2],
51 i->if_node[3], i->if_node[4], i->if_node[5]);
52 seq_printf(seq, "%-9s", i == ipx_primary_net ? "Yes" : "No");
53 seq_printf(seq, "%-11s", ipx_device_name(i));
54 seq_printf(seq, "%-9s", ipx_frame_name(i->if_dlink_type));
55 #ifdef IPX_REFCNT_DEBUG
56 seq_printf(seq, "%6d", atomic_read(&i->refcnt));
57 #endif
58 seq_puts(seq, "\n");
59 out:
60 return 0;
61 }
62
ipx_seq_route_start(struct seq_file * seq,loff_t * pos)63 static void *ipx_seq_route_start(struct seq_file *seq, loff_t *pos)
64 {
65 read_lock_bh(&ipx_routes_lock);
66 return seq_list_start_head(&ipx_routes, *pos);
67 }
68
ipx_seq_route_next(struct seq_file * seq,void * v,loff_t * pos)69 static void *ipx_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
70 {
71 return seq_list_next(v, &ipx_routes, pos);
72 }
73
ipx_seq_route_stop(struct seq_file * seq,void * v)74 static void ipx_seq_route_stop(struct seq_file *seq, void *v)
75 {
76 read_unlock_bh(&ipx_routes_lock);
77 }
78
ipx_seq_route_show(struct seq_file * seq,void * v)79 static int ipx_seq_route_show(struct seq_file *seq, void *v)
80 {
81 struct ipx_route *rt;
82
83 if (v == &ipx_routes) {
84 seq_puts(seq, "Network Router_Net Router_Node\n");
85 goto out;
86 }
87
88 rt = list_entry(v, struct ipx_route, node);
89
90 seq_printf(seq, "%08lX ", (unsigned long int)ntohl(rt->ir_net));
91 if (rt->ir_routed)
92 seq_printf(seq, "%08lX %02X%02X%02X%02X%02X%02X\n",
93 (long unsigned int)ntohl(rt->ir_intrfc->if_netnum),
94 rt->ir_router_node[0], rt->ir_router_node[1],
95 rt->ir_router_node[2], rt->ir_router_node[3],
96 rt->ir_router_node[4], rt->ir_router_node[5]);
97 else
98 seq_puts(seq, "Directly Connected\n");
99 out:
100 return 0;
101 }
102
ipx_get_socket_idx(loff_t pos)103 static __inline__ struct sock *ipx_get_socket_idx(loff_t pos)
104 {
105 struct sock *s = NULL;
106 struct ipx_interface *i;
107
108 list_for_each_entry(i, &ipx_interfaces, node) {
109 spin_lock_bh(&i->if_sklist_lock);
110 sk_for_each(s, &i->if_sklist) {
111 if (!pos)
112 break;
113 --pos;
114 }
115 spin_unlock_bh(&i->if_sklist_lock);
116 if (!pos) {
117 if (s)
118 goto found;
119 break;
120 }
121 }
122 s = NULL;
123 found:
124 return s;
125 }
126
ipx_seq_socket_start(struct seq_file * seq,loff_t * pos)127 static void *ipx_seq_socket_start(struct seq_file *seq, loff_t *pos)
128 {
129 loff_t l = *pos;
130
131 spin_lock_bh(&ipx_interfaces_lock);
132 return l ? ipx_get_socket_idx(--l) : SEQ_START_TOKEN;
133 }
134
ipx_seq_socket_next(struct seq_file * seq,void * v,loff_t * pos)135 static void *ipx_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
136 {
137 struct sock* sk, *next;
138 struct ipx_interface *i;
139 struct ipx_sock *ipxs;
140
141 ++*pos;
142 if (v == SEQ_START_TOKEN) {
143 sk = NULL;
144 i = ipx_interfaces_head();
145 if (!i)
146 goto out;
147 sk = sk_head(&i->if_sklist);
148 if (sk)
149 spin_lock_bh(&i->if_sklist_lock);
150 goto out;
151 }
152 sk = v;
153 next = sk_next(sk);
154 if (next) {
155 sk = next;
156 goto out;
157 }
158 ipxs = ipx_sk(sk);
159 i = ipxs->intrfc;
160 spin_unlock_bh(&i->if_sklist_lock);
161 sk = NULL;
162 for (;;) {
163 if (i->node.next == &ipx_interfaces)
164 break;
165 i = list_entry(i->node.next, struct ipx_interface, node);
166 spin_lock_bh(&i->if_sklist_lock);
167 if (!hlist_empty(&i->if_sklist)) {
168 sk = sk_head(&i->if_sklist);
169 break;
170 }
171 spin_unlock_bh(&i->if_sklist_lock);
172 }
173 out:
174 return sk;
175 }
176
ipx_seq_socket_show(struct seq_file * seq,void * v)177 static int ipx_seq_socket_show(struct seq_file *seq, void *v)
178 {
179 struct sock *s;
180 struct ipx_sock *ipxs;
181
182 if (v == SEQ_START_TOKEN) {
183 #ifdef CONFIG_IPX_INTERN
184 seq_puts(seq, "Local_Address "
185 "Remote_Address Tx_Queue "
186 "Rx_Queue State Uid\n");
187 #else
188 seq_puts(seq, "Local_Address Remote_Address "
189 "Tx_Queue Rx_Queue State Uid\n");
190 #endif
191 goto out;
192 }
193
194 s = v;
195 ipxs = ipx_sk(s);
196 #ifdef CONFIG_IPX_INTERN
197 seq_printf(seq, "%08lX:%02X%02X%02X%02X%02X%02X:%04X ",
198 (unsigned long)ntohl(ipxs->intrfc->if_netnum),
199 ipxs->node[0], ipxs->node[1], ipxs->node[2], ipxs->node[3],
200 ipxs->node[4], ipxs->node[5], ntohs(ipxs->port));
201 #else
202 seq_printf(seq, "%08lX:%04X ", (unsigned long) ntohl(ipxs->intrfc->if_netnum),
203 ntohs(ipxs->port));
204 #endif /* CONFIG_IPX_INTERN */
205 if (s->sk_state != TCP_ESTABLISHED)
206 seq_printf(seq, "%-28s", "Not_Connected");
207 else {
208 seq_printf(seq, "%08lX:%02X%02X%02X%02X%02X%02X:%04X ",
209 (unsigned long)ntohl(ipxs->dest_addr.net),
210 ipxs->dest_addr.node[0], ipxs->dest_addr.node[1],
211 ipxs->dest_addr.node[2], ipxs->dest_addr.node[3],
212 ipxs->dest_addr.node[4], ipxs->dest_addr.node[5],
213 ntohs(ipxs->dest_addr.sock));
214 }
215
216 seq_printf(seq, "%08X %08X %02X %03u\n",
217 sk_wmem_alloc_get(s),
218 sk_rmem_alloc_get(s),
219 s->sk_state,
220 from_kuid_munged(seq_user_ns(seq), sock_i_uid(s)));
221 out:
222 return 0;
223 }
224
225 static const struct seq_operations ipx_seq_interface_ops = {
226 .start = ipx_seq_interface_start,
227 .next = ipx_seq_interface_next,
228 .stop = ipx_seq_interface_stop,
229 .show = ipx_seq_interface_show,
230 };
231
232 static const struct seq_operations ipx_seq_route_ops = {
233 .start = ipx_seq_route_start,
234 .next = ipx_seq_route_next,
235 .stop = ipx_seq_route_stop,
236 .show = ipx_seq_route_show,
237 };
238
239 static const struct seq_operations ipx_seq_socket_ops = {
240 .start = ipx_seq_socket_start,
241 .next = ipx_seq_socket_next,
242 .stop = ipx_seq_interface_stop,
243 .show = ipx_seq_socket_show,
244 };
245
ipx_seq_route_open(struct inode * inode,struct file * file)246 static int ipx_seq_route_open(struct inode *inode, struct file *file)
247 {
248 return seq_open(file, &ipx_seq_route_ops);
249 }
250
ipx_seq_interface_open(struct inode * inode,struct file * file)251 static int ipx_seq_interface_open(struct inode *inode, struct file *file)
252 {
253 return seq_open(file, &ipx_seq_interface_ops);
254 }
255
ipx_seq_socket_open(struct inode * inode,struct file * file)256 static int ipx_seq_socket_open(struct inode *inode, struct file *file)
257 {
258 return seq_open(file, &ipx_seq_socket_ops);
259 }
260
261 static const struct file_operations ipx_seq_interface_fops = {
262 .owner = THIS_MODULE,
263 .open = ipx_seq_interface_open,
264 .read = seq_read,
265 .llseek = seq_lseek,
266 .release = seq_release,
267 };
268
269 static const struct file_operations ipx_seq_route_fops = {
270 .owner = THIS_MODULE,
271 .open = ipx_seq_route_open,
272 .read = seq_read,
273 .llseek = seq_lseek,
274 .release = seq_release,
275 };
276
277 static const struct file_operations ipx_seq_socket_fops = {
278 .owner = THIS_MODULE,
279 .open = ipx_seq_socket_open,
280 .read = seq_read,
281 .llseek = seq_lseek,
282 .release = seq_release,
283 };
284
285 static struct proc_dir_entry *ipx_proc_dir;
286
ipx_proc_init(void)287 int __init ipx_proc_init(void)
288 {
289 struct proc_dir_entry *p;
290 int rc = -ENOMEM;
291
292 ipx_proc_dir = proc_mkdir("ipx", init_net.proc_net);
293
294 if (!ipx_proc_dir)
295 goto out;
296 p = proc_create("interface", S_IRUGO,
297 ipx_proc_dir, &ipx_seq_interface_fops);
298 if (!p)
299 goto out_interface;
300
301 p = proc_create("route", S_IRUGO, ipx_proc_dir, &ipx_seq_route_fops);
302 if (!p)
303 goto out_route;
304
305 p = proc_create("socket", S_IRUGO, ipx_proc_dir, &ipx_seq_socket_fops);
306 if (!p)
307 goto out_socket;
308
309 rc = 0;
310 out:
311 return rc;
312 out_socket:
313 remove_proc_entry("route", ipx_proc_dir);
314 out_route:
315 remove_proc_entry("interface", ipx_proc_dir);
316 out_interface:
317 remove_proc_entry("ipx", init_net.proc_net);
318 goto out;
319 }
320
ipx_proc_exit(void)321 void __exit ipx_proc_exit(void)
322 {
323 remove_proc_entry("interface", ipx_proc_dir);
324 remove_proc_entry("route", ipx_proc_dir);
325 remove_proc_entry("socket", ipx_proc_dir);
326 remove_proc_entry("ipx", init_net.proc_net);
327 }
328
329 #else /* CONFIG_PROC_FS */
330
ipx_proc_init(void)331 int __init ipx_proc_init(void)
332 {
333 return 0;
334 }
335
ipx_proc_exit(void)336 void __exit ipx_proc_exit(void)
337 {
338 }
339
340 #endif /* CONFIG_PROC_FS */
341