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Linux/net/ipx/ipx_proc.c

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  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 
 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 
 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 
 28 static void ipx_seq_interface_stop(struct seq_file *seq, void *v)
 29 {
 30         spin_unlock_bh(&ipx_interfaces_lock);
 31 }
 32 
 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, "%08X   ", 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 
 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 
 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 
 74 static void ipx_seq_route_stop(struct seq_file *seq, void *v)
 75 {
 76         read_unlock_bh(&ipx_routes_lock);
 77 }
 78 
 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, "%08X   ", ntohl(rt->ir_net));
 91         if (rt->ir_routed)
 92                 seq_printf(seq, "%08X     %02X%02X%02X%02X%02X%02X\n",
 93                            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 
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 
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 
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 
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, "%08X:%02X%02X%02X%02X%02X%02X:%04X  ",
198                    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, "%08X:%04X  ", 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, "%08X:%02X%02X%02X%02X%02X%02X:%04X  ",
209                            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 
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 
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 
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 
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 
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 
331 int __init ipx_proc_init(void)
332 {
333         return 0;
334 }
335 
336 void __exit ipx_proc_exit(void)
337 {
338 }
339 
340 #endif /* CONFIG_PROC_FS */
341 

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