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1da177e4 LT |
1 | /* |
2 | * atalk_proc.c - proc support for Appletalk | |
3 | * | |
4 | * Copyright(c) Arnaldo Carvalho de Melo <acme@conectiva.com.br> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation, version 2. | |
9 | */ | |
10 | ||
1da177e4 LT |
11 | #include <linux/init.h> |
12 | #include <linux/proc_fs.h> | |
13 | #include <linux/seq_file.h> | |
457c4cbc | 14 | #include <net/net_namespace.h> |
1da177e4 LT |
15 | #include <net/sock.h> |
16 | #include <linux/atalk.h> | |
17 | ||
18 | ||
19 | static __inline__ struct atalk_iface *atalk_get_interface_idx(loff_t pos) | |
20 | { | |
21 | struct atalk_iface *i; | |
22 | ||
23 | for (i = atalk_interfaces; pos && i; i = i->next) | |
24 | --pos; | |
25 | ||
26 | return i; | |
27 | } | |
28 | ||
29 | static void *atalk_seq_interface_start(struct seq_file *seq, loff_t *pos) | |
30 | { | |
31 | loff_t l = *pos; | |
32 | ||
33 | read_lock_bh(&atalk_interfaces_lock); | |
34 | return l ? atalk_get_interface_idx(--l) : SEQ_START_TOKEN; | |
35 | } | |
36 | ||
37 | static void *atalk_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos) | |
38 | { | |
39 | struct atalk_iface *i; | |
40 | ||
41 | ++*pos; | |
42 | if (v == SEQ_START_TOKEN) { | |
43 | i = NULL; | |
44 | if (atalk_interfaces) | |
45 | i = atalk_interfaces; | |
46 | goto out; | |
47 | } | |
48 | i = v; | |
49 | i = i->next; | |
50 | out: | |
51 | return i; | |
52 | } | |
53 | ||
54 | static void atalk_seq_interface_stop(struct seq_file *seq, void *v) | |
55 | { | |
56 | read_unlock_bh(&atalk_interfaces_lock); | |
57 | } | |
58 | ||
59 | static 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); | |
74 | out: | |
75 | return 0; | |
76 | } | |
77 | ||
78 | static __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 | ||
88 | static void *atalk_seq_route_start(struct seq_file *seq, loff_t *pos) | |
89 | { | |
90 | loff_t l = *pos; | |
91 | ||
92 | read_lock_bh(&atalk_routes_lock); | |
93 | return l ? atalk_get_route_idx(--l) : SEQ_START_TOKEN; | |
94 | } | |
95 | ||
96 | static void *atalk_seq_route_next(struct seq_file *seq, void *v, loff_t *pos) | |
97 | { | |
98 | struct atalk_route *r; | |
99 | ||
100 | ++*pos; | |
101 | if (v == SEQ_START_TOKEN) { | |
102 | r = NULL; | |
103 | if (atalk_routes) | |
104 | r = atalk_routes; | |
105 | goto out; | |
106 | } | |
107 | r = v; | |
108 | r = r->next; | |
109 | out: | |
110 | return r; | |
111 | } | |
112 | ||
113 | static void atalk_seq_route_stop(struct seq_file *seq, void *v) | |
114 | { | |
115 | read_unlock_bh(&atalk_routes_lock); | |
116 | } | |
117 | ||
118 | static int atalk_seq_route_show(struct seq_file *seq, void *v) | |
119 | { | |
120 | struct atalk_route *rt; | |
121 | ||
122 | if (v == SEQ_START_TOKEN) { | |
123 | seq_puts(seq, "Target Router Flags Dev\n"); | |
124 | goto out; | |
125 | } | |
126 | ||
127 | if (atrtr_default.dev) { | |
128 | rt = &atrtr_default; | |
129 | seq_printf(seq, "Default %04X:%02X %-4d %s\n", | |
130 | ntohs(rt->gateway.s_net), rt->gateway.s_node, | |
131 | rt->flags, rt->dev->name); | |
132 | } | |
133 | ||
134 | rt = v; | |
135 | seq_printf(seq, "%04X:%02X %04X:%02X %-4d %s\n", | |
136 | ntohs(rt->target.s_net), rt->target.s_node, | |
137 | ntohs(rt->gateway.s_net), rt->gateway.s_node, | |
138 | rt->flags, rt->dev->name); | |
139 | out: | |
140 | return 0; | |
141 | } | |
142 | ||
143 | static __inline__ struct sock *atalk_get_socket_idx(loff_t pos) | |
144 | { | |
145 | struct sock *s; | |
146 | struct hlist_node *node; | |
147 | ||
148 | sk_for_each(s, node, &atalk_sockets) | |
149 | if (!pos--) | |
150 | goto found; | |
151 | s = NULL; | |
152 | found: | |
153 | return s; | |
154 | } | |
155 | ||
156 | static void *atalk_seq_socket_start(struct seq_file *seq, loff_t *pos) | |
157 | { | |
158 | loff_t l = *pos; | |
159 | ||
160 | read_lock_bh(&atalk_sockets_lock); | |
161 | return l ? atalk_get_socket_idx(--l) : SEQ_START_TOKEN; | |
162 | } | |
163 | ||
164 | static void *atalk_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos) | |
165 | { | |
166 | struct sock *i; | |
167 | ||
168 | ++*pos; | |
169 | if (v == SEQ_START_TOKEN) { | |
170 | i = sk_head(&atalk_sockets); | |
171 | goto out; | |
172 | } | |
173 | i = sk_next(v); | |
174 | out: | |
175 | return i; | |
176 | } | |
177 | ||
178 | static void atalk_seq_socket_stop(struct seq_file *seq, void *v) | |
179 | { | |
180 | read_unlock_bh(&atalk_sockets_lock); | |
181 | } | |
182 | ||
183 | static int atalk_seq_socket_show(struct seq_file *seq, void *v) | |
184 | { | |
185 | struct sock *s; | |
186 | struct atalk_sock *at; | |
187 | ||
188 | if (v == SEQ_START_TOKEN) { | |
189 | seq_printf(seq, "Type Local_addr Remote_addr Tx_queue " | |
190 | "Rx_queue St UID\n"); | |
191 | goto out; | |
192 | } | |
193 | ||
194 | s = v; | |
195 | at = at_sk(s); | |
196 | ||
197 | seq_printf(seq, "%02X %04X:%02X:%02X %04X:%02X:%02X %08X:%08X " | |
198 | "%02X %d\n", | |
199 | s->sk_type, ntohs(at->src_net), at->src_node, at->src_port, | |
200 | ntohs(at->dest_net), at->dest_node, at->dest_port, | |
201 | atomic_read(&s->sk_wmem_alloc), | |
202 | atomic_read(&s->sk_rmem_alloc), | |
203 | s->sk_state, SOCK_INODE(s->sk_socket)->i_uid); | |
204 | out: | |
205 | return 0; | |
206 | } | |
207 | ||
56b3d975 | 208 | static const struct seq_operations atalk_seq_interface_ops = { |
1da177e4 LT |
209 | .start = atalk_seq_interface_start, |
210 | .next = atalk_seq_interface_next, | |
211 | .stop = atalk_seq_interface_stop, | |
212 | .show = atalk_seq_interface_show, | |
213 | }; | |
214 | ||
56b3d975 | 215 | static const struct seq_operations atalk_seq_route_ops = { |
1da177e4 LT |
216 | .start = atalk_seq_route_start, |
217 | .next = atalk_seq_route_next, | |
218 | .stop = atalk_seq_route_stop, | |
219 | .show = atalk_seq_route_show, | |
220 | }; | |
221 | ||
56b3d975 | 222 | static const struct seq_operations atalk_seq_socket_ops = { |
1da177e4 LT |
223 | .start = atalk_seq_socket_start, |
224 | .next = atalk_seq_socket_next, | |
225 | .stop = atalk_seq_socket_stop, | |
226 | .show = atalk_seq_socket_show, | |
227 | }; | |
228 | ||
229 | static int atalk_seq_interface_open(struct inode *inode, struct file *file) | |
230 | { | |
231 | return seq_open(file, &atalk_seq_interface_ops); | |
232 | } | |
233 | ||
234 | static int atalk_seq_route_open(struct inode *inode, struct file *file) | |
235 | { | |
236 | return seq_open(file, &atalk_seq_route_ops); | |
237 | } | |
238 | ||
239 | static int atalk_seq_socket_open(struct inode *inode, struct file *file) | |
240 | { | |
241 | return seq_open(file, &atalk_seq_socket_ops); | |
242 | } | |
243 | ||
9a32144e | 244 | static const struct file_operations atalk_seq_interface_fops = { |
1da177e4 LT |
245 | .owner = THIS_MODULE, |
246 | .open = atalk_seq_interface_open, | |
247 | .read = seq_read, | |
248 | .llseek = seq_lseek, | |
249 | .release = seq_release, | |
250 | }; | |
251 | ||
9a32144e | 252 | static const struct file_operations atalk_seq_route_fops = { |
1da177e4 LT |
253 | .owner = THIS_MODULE, |
254 | .open = atalk_seq_route_open, | |
255 | .read = seq_read, | |
256 | .llseek = seq_lseek, | |
257 | .release = seq_release, | |
258 | }; | |
259 | ||
9a32144e | 260 | static const struct file_operations atalk_seq_socket_fops = { |
1da177e4 LT |
261 | .owner = THIS_MODULE, |
262 | .open = atalk_seq_socket_open, | |
263 | .read = seq_read, | |
264 | .llseek = seq_lseek, | |
265 | .release = seq_release, | |
266 | }; | |
267 | ||
268 | static struct proc_dir_entry *atalk_proc_dir; | |
269 | ||
270 | int __init atalk_proc_init(void) | |
271 | { | |
272 | struct proc_dir_entry *p; | |
273 | int rc = -ENOMEM; | |
274 | ||
457c4cbc | 275 | atalk_proc_dir = proc_mkdir("atalk", init_net.proc_net); |
1da177e4 LT |
276 | if (!atalk_proc_dir) |
277 | goto out; | |
278 | atalk_proc_dir->owner = THIS_MODULE; | |
279 | ||
280 | p = create_proc_entry("interface", S_IRUGO, atalk_proc_dir); | |
281 | if (!p) | |
282 | goto out_interface; | |
283 | p->proc_fops = &atalk_seq_interface_fops; | |
284 | ||
285 | p = create_proc_entry("route", S_IRUGO, atalk_proc_dir); | |
286 | if (!p) | |
287 | goto out_route; | |
288 | p->proc_fops = &atalk_seq_route_fops; | |
289 | ||
290 | p = create_proc_entry("socket", S_IRUGO, atalk_proc_dir); | |
291 | if (!p) | |
292 | goto out_socket; | |
293 | p->proc_fops = &atalk_seq_socket_fops; | |
294 | ||
295 | p = create_proc_entry("arp", S_IRUGO, atalk_proc_dir); | |
ed4477b9 | 296 | if (!p) |
1da177e4 LT |
297 | goto out_arp; |
298 | p->proc_fops = &atalk_seq_arp_fops; | |
299 | ||
300 | rc = 0; | |
301 | out: | |
302 | return rc; | |
303 | out_arp: | |
304 | remove_proc_entry("socket", atalk_proc_dir); | |
305 | out_socket: | |
306 | remove_proc_entry("route", atalk_proc_dir); | |
307 | out_route: | |
308 | remove_proc_entry("interface", atalk_proc_dir); | |
309 | out_interface: | |
457c4cbc | 310 | remove_proc_entry("atalk", init_net.proc_net); |
1da177e4 LT |
311 | goto out; |
312 | } | |
313 | ||
314 | void __exit atalk_proc_exit(void) | |
315 | { | |
316 | remove_proc_entry("interface", atalk_proc_dir); | |
317 | remove_proc_entry("route", atalk_proc_dir); | |
318 | remove_proc_entry("socket", atalk_proc_dir); | |
319 | remove_proc_entry("arp", atalk_proc_dir); | |
457c4cbc | 320 | remove_proc_entry("atalk", init_net.proc_net); |
1da177e4 | 321 | } |