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1 | /* |
2 | * X.25 Packet Layer release 002 |
3 | * |
4 | * This is ALPHA test software. This code may break your machine, |
5 | * randomly fail to work with new releases, misbehave and/or generally |
6 | * screw up. It might even work. |
7 | * |
8 | * This code REQUIRES 2.4 with seq_file support |
9 | * |
10 | * This module: |
11 | * This module is free software; you can redistribute it and/or |
12 | * modify it under the terms of the GNU General Public License |
13 | * as published by the Free Software Foundation; either version |
14 | * 2 of the License, or (at your option) any later version. |
15 | * |
16 | * History |
17 | * 2002/10/06 Arnaldo Carvalho de Melo seq_file support |
18 | */ |
19 | |
20 | #include <linux/init.h> |
21 | #include <linux/proc_fs.h> |
22 | #include <linux/seq_file.h> |
23 | #include <net/net_namespace.h> |
24 | #include <net/sock.h> |
25 | #include <net/x25.h> |
26 | |
27 | #ifdef CONFIG_PROC_FS |
28 | |
29 | static void *x25_seq_route_start(struct seq_file *seq, loff_t *pos) |
30 | __acquires(x25_route_list_lock) |
31 | { |
32 | read_lock_bh(&x25_route_list_lock); |
33 | return seq_list_start_head(&x25_route_list, *pos); |
34 | } |
35 | |
36 | static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos) |
37 | { |
38 | return seq_list_next(v, &x25_route_list, pos); |
39 | } |
40 | |
41 | static void x25_seq_route_stop(struct seq_file *seq, void *v) |
42 | __releases(x25_route_list_lock) |
43 | { |
44 | read_unlock_bh(&x25_route_list_lock); |
45 | } |
46 | |
47 | static int x25_seq_route_show(struct seq_file *seq, void *v) |
48 | { |
49 | struct x25_route *rt = list_entry(v, struct x25_route, node); |
50 | |
51 | if (v == &x25_route_list) { |
52 | seq_puts(seq, "Address Digits Device\n"); |
53 | goto out; |
54 | } |
55 | |
56 | rt = v; |
57 | seq_printf(seq, "%-15s %-6d %-5s\n", |
58 | rt->address.x25_addr, rt->sigdigits, |
59 | rt->dev ? rt->dev->name : "???"); |
60 | out: |
61 | return 0; |
62 | } |
63 | |
64 | static void *x25_seq_socket_start(struct seq_file *seq, loff_t *pos) |
65 | __acquires(x25_list_lock) |
66 | { |
67 | read_lock_bh(&x25_list_lock); |
68 | return seq_hlist_start_head(&x25_list, *pos); |
69 | } |
70 | |
71 | static void *x25_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos) |
72 | { |
73 | return seq_hlist_next(v, &x25_list, pos); |
74 | } |
75 | |
76 | static void x25_seq_socket_stop(struct seq_file *seq, void *v) |
77 | __releases(x25_list_lock) |
78 | { |
79 | read_unlock_bh(&x25_list_lock); |
80 | } |
81 | |
82 | static int x25_seq_socket_show(struct seq_file *seq, void *v) |
83 | { |
84 | struct sock *s; |
85 | struct x25_sock *x25; |
86 | struct net_device *dev; |
87 | const char *devname; |
88 | |
89 | if (v == SEQ_START_TOKEN) { |
90 | seq_printf(seq, "dest_addr src_addr dev lci st vs vr " |
91 | "va t t2 t21 t22 t23 Snd-Q Rcv-Q inode\n"); |
92 | goto out; |
93 | } |
94 | |
95 | s = sk_entry(v); |
96 | x25 = x25_sk(s); |
97 | |
98 | if (!x25->neighbour || (dev = x25->neighbour->dev) == NULL) |
99 | devname = "???"; |
100 | else |
101 | devname = x25->neighbour->dev->name; |
102 | |
103 | seq_printf(seq, "%-10s %-10s %-5s %3.3X %d %d %d %d %3lu %3lu " |
104 | "%3lu %3lu %3lu %5d %5d %ld\n", |
105 | !x25->dest_addr.x25_addr[0] ? "*" : x25->dest_addr.x25_addr, |
106 | !x25->source_addr.x25_addr[0] ? "*" : x25->source_addr.x25_addr, |
107 | devname, x25->lci & 0x0FFF, x25->state, x25->vs, x25->vr, |
108 | x25->va, x25_display_timer(s) / HZ, x25->t2 / HZ, |
109 | x25->t21 / HZ, x25->t22 / HZ, x25->t23 / HZ, |
110 | sk_wmem_alloc_get(s), |
111 | sk_rmem_alloc_get(s), |
112 | s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); |
113 | out: |
114 | return 0; |
115 | } |
116 | |
117 | static void *x25_seq_forward_start(struct seq_file *seq, loff_t *pos) |
118 | __acquires(x25_forward_list_lock) |
119 | { |
120 | read_lock_bh(&x25_forward_list_lock); |
121 | return seq_list_start_head(&x25_forward_list, *pos); |
122 | } |
123 | |
124 | static void *x25_seq_forward_next(struct seq_file *seq, void *v, loff_t *pos) |
125 | { |
126 | return seq_list_next(v, &x25_forward_list, pos); |
127 | } |
128 | |
129 | static void x25_seq_forward_stop(struct seq_file *seq, void *v) |
130 | __releases(x25_forward_list_lock) |
131 | { |
132 | read_unlock_bh(&x25_forward_list_lock); |
133 | } |
134 | |
135 | static int x25_seq_forward_show(struct seq_file *seq, void *v) |
136 | { |
137 | struct x25_forward *f = list_entry(v, struct x25_forward, node); |
138 | |
139 | if (v == &x25_forward_list) { |
140 | seq_printf(seq, "lci dev1 dev2\n"); |
141 | goto out; |
142 | } |
143 | |
144 | f = v; |
145 | |
146 | seq_printf(seq, "%d %-10s %-10s\n", |
147 | f->lci, f->dev1->name, f->dev2->name); |
148 | out: |
149 | return 0; |
150 | } |
151 | |
152 | static const struct seq_operations x25_seq_route_ops = { |
153 | .start = x25_seq_route_start, |
154 | .next = x25_seq_route_next, |
155 | .stop = x25_seq_route_stop, |
156 | .show = x25_seq_route_show, |
157 | }; |
158 | |
159 | static const struct seq_operations x25_seq_socket_ops = { |
160 | .start = x25_seq_socket_start, |
161 | .next = x25_seq_socket_next, |
162 | .stop = x25_seq_socket_stop, |
163 | .show = x25_seq_socket_show, |
164 | }; |
165 | |
166 | static const struct seq_operations x25_seq_forward_ops = { |
167 | .start = x25_seq_forward_start, |
168 | .next = x25_seq_forward_next, |
169 | .stop = x25_seq_forward_stop, |
170 | .show = x25_seq_forward_show, |
171 | }; |
172 | |
173 | static int x25_seq_socket_open(struct inode *inode, struct file *file) |
174 | { |
175 | return seq_open(file, &x25_seq_socket_ops); |
176 | } |
177 | |
178 | static int x25_seq_route_open(struct inode *inode, struct file *file) |
179 | { |
180 | return seq_open(file, &x25_seq_route_ops); |
181 | } |
182 | |
183 | static int x25_seq_forward_open(struct inode *inode, struct file *file) |
184 | { |
185 | return seq_open(file, &x25_seq_forward_ops); |
186 | } |
187 | |
188 | static const struct file_operations x25_seq_socket_fops = { |
189 | .owner = THIS_MODULE, |
190 | .open = x25_seq_socket_open, |
191 | .read = seq_read, |
192 | .llseek = seq_lseek, |
193 | .release = seq_release, |
194 | }; |
195 | |
196 | static const struct file_operations x25_seq_route_fops = { |
197 | .owner = THIS_MODULE, |
198 | .open = x25_seq_route_open, |
199 | .read = seq_read, |
200 | .llseek = seq_lseek, |
201 | .release = seq_release, |
202 | }; |
203 | |
204 | static const struct file_operations x25_seq_forward_fops = { |
205 | .owner = THIS_MODULE, |
206 | .open = x25_seq_forward_open, |
207 | .read = seq_read, |
208 | .llseek = seq_lseek, |
209 | .release = seq_release, |
210 | }; |
211 | |
212 | static struct proc_dir_entry *x25_proc_dir; |
213 | |
214 | int __init x25_proc_init(void) |
215 | { |
216 | struct proc_dir_entry *p; |
217 | int rc = -ENOMEM; |
218 | |
219 | x25_proc_dir = proc_mkdir("x25", init_net.proc_net); |
220 | if (!x25_proc_dir) |
221 | goto out; |
222 | |
223 | p = proc_create("route", S_IRUGO, x25_proc_dir, &x25_seq_route_fops); |
224 | if (!p) |
225 | goto out_route; |
226 | |
227 | p = proc_create("socket", S_IRUGO, x25_proc_dir, &x25_seq_socket_fops); |
228 | if (!p) |
229 | goto out_socket; |
230 | |
231 | p = proc_create("forward", S_IRUGO, x25_proc_dir, |
232 | &x25_seq_forward_fops); |
233 | if (!p) |
234 | goto out_forward; |
235 | rc = 0; |
236 | |
237 | out: |
238 | return rc; |
239 | out_forward: |
240 | remove_proc_entry("socket", x25_proc_dir); |
241 | out_socket: |
242 | remove_proc_entry("route", x25_proc_dir); |
243 | out_route: |
244 | remove_proc_entry("x25", init_net.proc_net); |
245 | goto out; |
246 | } |
247 | |
248 | void __exit x25_proc_exit(void) |
249 | { |
250 | remove_proc_entry("forward", x25_proc_dir); |
251 | remove_proc_entry("route", x25_proc_dir); |
252 | remove_proc_entry("socket", x25_proc_dir); |
253 | remove_proc_entry("x25", init_net.proc_net); |
254 | } |
255 | |
256 | #else /* CONFIG_PROC_FS */ |
257 | |
258 | int __init x25_proc_init(void) |
259 | { |
260 | return 0; |
261 | } |
262 | |
263 | void __exit x25_proc_exit(void) |
264 | { |
265 | } |
266 | #endif /* CONFIG_PROC_FS */ |
267 |
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