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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 <linux/export.h> | |
24 | #include <net/net_namespace.h> | |
25 | #include <net/sock.h> | |
26 | #include <net/x25.h> | |
27 | ||
28 | #ifdef CONFIG_PROC_FS | |
29 | ||
30 | static void *x25_seq_route_start(struct seq_file *seq, loff_t *pos) | |
31 | __acquires(x25_route_list_lock) | |
32 | { | |
33 | read_lock_bh(&x25_route_list_lock); | |
34 | return seq_list_start_head(&x25_route_list, *pos); | |
35 | } | |
36 | ||
37 | static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos) | |
38 | { | |
39 | return seq_list_next(v, &x25_route_list, pos); | |
40 | } | |
41 | ||
42 | static void x25_seq_route_stop(struct seq_file *seq, void *v) | |
43 | __releases(x25_route_list_lock) | |
44 | { | |
45 | read_unlock_bh(&x25_route_list_lock); | |
46 | } | |
47 | ||
48 | static int x25_seq_route_show(struct seq_file *seq, void *v) | |
49 | { | |
50 | struct x25_route *rt = list_entry(v, struct x25_route, node); | |
51 | ||
52 | if (v == &x25_route_list) { | |
53 | seq_puts(seq, "Address Digits Device\n"); | |
54 | goto out; | |
55 | } | |
56 | ||
57 | rt = v; | |
58 | seq_printf(seq, "%-15s %-6d %-5s\n", | |
59 | rt->address.x25_addr, rt->sigdigits, | |
60 | rt->dev ? rt->dev->name : "???"); | |
61 | out: | |
62 | return 0; | |
63 | } | |
64 | ||
65 | static void *x25_seq_socket_start(struct seq_file *seq, loff_t *pos) | |
66 | __acquires(x25_list_lock) | |
67 | { | |
68 | read_lock_bh(&x25_list_lock); | |
69 | return seq_hlist_start_head(&x25_list, *pos); | |
70 | } | |
71 | ||
72 | static void *x25_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos) | |
73 | { | |
74 | return seq_hlist_next(v, &x25_list, pos); | |
75 | } | |
76 | ||
77 | static void x25_seq_socket_stop(struct seq_file *seq, void *v) | |
78 | __releases(x25_list_lock) | |
79 | { | |
80 | read_unlock_bh(&x25_list_lock); | |
81 | } | |
82 | ||
83 | static int x25_seq_socket_show(struct seq_file *seq, void *v) | |
84 | { | |
85 | struct sock *s; | |
86 | struct x25_sock *x25; | |
87 | struct net_device *dev; | |
88 | const char *devname; | |
89 | ||
90 | if (v == SEQ_START_TOKEN) { | |
91 | seq_printf(seq, "dest_addr src_addr dev lci st vs vr " | |
92 | "va t t2 t21 t22 t23 Snd-Q Rcv-Q inode\n"); | |
93 | goto out; | |
94 | } | |
95 | ||
96 | s = sk_entry(v); | |
97 | x25 = x25_sk(s); | |
98 | ||
99 | if (!x25->neighbour || (dev = x25->neighbour->dev) == NULL) | |
100 | devname = "???"; | |
101 | else | |
102 | devname = x25->neighbour->dev->name; | |
103 | ||
104 | seq_printf(seq, "%-10s %-10s %-5s %3.3X %d %d %d %d %3lu %3lu " | |
105 | "%3lu %3lu %3lu %5d %5d %ld\n", | |
106 | !x25->dest_addr.x25_addr[0] ? "*" : x25->dest_addr.x25_addr, | |
107 | !x25->source_addr.x25_addr[0] ? "*" : x25->source_addr.x25_addr, | |
108 | devname, x25->lci & 0x0FFF, x25->state, x25->vs, x25->vr, | |
109 | x25->va, x25_display_timer(s) / HZ, x25->t2 / HZ, | |
110 | x25->t21 / HZ, x25->t22 / HZ, x25->t23 / HZ, | |
111 | sk_wmem_alloc_get(s), | |
112 | sk_rmem_alloc_get(s), | |
113 | s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); | |
114 | out: | |
115 | return 0; | |
116 | } | |
117 | ||
118 | static void *x25_seq_forward_start(struct seq_file *seq, loff_t *pos) | |
119 | __acquires(x25_forward_list_lock) | |
120 | { | |
121 | read_lock_bh(&x25_forward_list_lock); | |
122 | return seq_list_start_head(&x25_forward_list, *pos); | |
123 | } | |
124 | ||
125 | static void *x25_seq_forward_next(struct seq_file *seq, void *v, loff_t *pos) | |
126 | { | |
127 | return seq_list_next(v, &x25_forward_list, pos); | |
128 | } | |
129 | ||
130 | static void x25_seq_forward_stop(struct seq_file *seq, void *v) | |
131 | __releases(x25_forward_list_lock) | |
132 | { | |
133 | read_unlock_bh(&x25_forward_list_lock); | |
134 | } | |
135 | ||
136 | static int x25_seq_forward_show(struct seq_file *seq, void *v) | |
137 | { | |
138 | struct x25_forward *f = list_entry(v, struct x25_forward, node); | |
139 | ||
140 | if (v == &x25_forward_list) { | |
141 | seq_printf(seq, "lci dev1 dev2\n"); | |
142 | goto out; | |
143 | } | |
144 | ||
145 | f = v; | |
146 | ||
147 | seq_printf(seq, "%d %-10s %-10s\n", | |
148 | f->lci, f->dev1->name, f->dev2->name); | |
149 | out: | |
150 | return 0; | |
151 | } | |
152 | ||
153 | static const struct seq_operations x25_seq_route_ops = { | |
154 | .start = x25_seq_route_start, | |
155 | .next = x25_seq_route_next, | |
156 | .stop = x25_seq_route_stop, | |
157 | .show = x25_seq_route_show, | |
158 | }; | |
159 | ||
160 | static const struct seq_operations x25_seq_socket_ops = { | |
161 | .start = x25_seq_socket_start, | |
162 | .next = x25_seq_socket_next, | |
163 | .stop = x25_seq_socket_stop, | |
164 | .show = x25_seq_socket_show, | |
165 | }; | |
166 | ||
167 | static const struct seq_operations x25_seq_forward_ops = { | |
168 | .start = x25_seq_forward_start, | |
169 | .next = x25_seq_forward_next, | |
170 | .stop = x25_seq_forward_stop, | |
171 | .show = x25_seq_forward_show, | |
172 | }; | |
173 | ||
174 | static int x25_seq_socket_open(struct inode *inode, struct file *file) | |
175 | { | |
176 | return seq_open(file, &x25_seq_socket_ops); | |
177 | } | |
178 | ||
179 | static int x25_seq_route_open(struct inode *inode, struct file *file) | |
180 | { | |
181 | return seq_open(file, &x25_seq_route_ops); | |
182 | } | |
183 | ||
184 | static int x25_seq_forward_open(struct inode *inode, struct file *file) | |
185 | { | |
186 | return seq_open(file, &x25_seq_forward_ops); | |
187 | } | |
188 | ||
189 | static const struct file_operations x25_seq_socket_fops = { | |
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 | .open = x25_seq_route_open, | |
198 | .read = seq_read, | |
199 | .llseek = seq_lseek, | |
200 | .release = seq_release, | |
201 | }; | |
202 | ||
203 | static const struct file_operations x25_seq_forward_fops = { | |
204 | .open = x25_seq_forward_open, | |
205 | .read = seq_read, | |
206 | .llseek = seq_lseek, | |
207 | .release = seq_release, | |
208 | }; | |
209 | ||
210 | int __init x25_proc_init(void) | |
211 | { | |
212 | if (!proc_mkdir("x25", init_net.proc_net)) | |
213 | return -ENOMEM; | |
214 | ||
215 | if (!proc_create("x25/route", S_IRUGO, init_net.proc_net, | |
216 | &x25_seq_route_fops)) | |
217 | goto out; | |
218 | ||
219 | if (!proc_create("x25/socket", S_IRUGO, init_net.proc_net, | |
220 | &x25_seq_socket_fops)) | |
221 | goto out; | |
222 | ||
223 | if (!proc_create("x25/forward", S_IRUGO, init_net.proc_net, | |
224 | &x25_seq_forward_fops)) | |
225 | goto out; | |
226 | return 0; | |
227 | ||
228 | out: | |
229 | remove_proc_subtree("x25", init_net.proc_net); | |
230 | return -ENOMEM; | |
231 | } | |
232 | ||
233 | void __exit x25_proc_exit(void) | |
234 | { | |
235 | remove_proc_subtree("x25", init_net.proc_net); | |
236 | } | |
237 | ||
238 | #else /* CONFIG_PROC_FS */ | |
239 | ||
240 | int __init x25_proc_init(void) | |
241 | { | |
242 | return 0; | |
243 | } | |
244 | ||
245 | void __exit x25_proc_exit(void) | |
246 | { | |
247 | } | |
248 | #endif /* CONFIG_PROC_FS */ |