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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> | |
14 | #include <net/sock.h> | |
15 | #include <linux/atalk.h> | |
16 | ||
17 | ||
18 | static __inline__ struct atalk_iface *atalk_get_interface_idx(loff_t pos) | |
19 | { | |
20 | struct atalk_iface *i; | |
21 | ||
22 | for (i = atalk_interfaces; pos && i; i = i->next) | |
23 | --pos; | |
24 | ||
25 | return i; | |
26 | } | |
27 | ||
28 | static void *atalk_seq_interface_start(struct seq_file *seq, loff_t *pos) | |
29 | { | |
30 | loff_t l = *pos; | |
31 | ||
32 | read_lock_bh(&atalk_interfaces_lock); | |
33 | return l ? atalk_get_interface_idx(--l) : SEQ_START_TOKEN; | |
34 | } | |
35 | ||
36 | static void *atalk_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos) | |
37 | { | |
38 | struct atalk_iface *i; | |
39 | ||
40 | ++*pos; | |
41 | if (v == SEQ_START_TOKEN) { | |
42 | i = NULL; | |
43 | if (atalk_interfaces) | |
44 | i = atalk_interfaces; | |
45 | goto out; | |
46 | } | |
47 | i = v; | |
48 | i = i->next; | |
49 | out: | |
50 | return i; | |
51 | } | |
52 | ||
53 | static void atalk_seq_interface_stop(struct seq_file *seq, void *v) | |
54 | { | |
55 | read_unlock_bh(&atalk_interfaces_lock); | |
56 | } | |
57 | ||
58 | static int atalk_seq_interface_show(struct seq_file *seq, void *v) | |
59 | { | |
60 | struct atalk_iface *iface; | |
61 | ||
62 | if (v == SEQ_START_TOKEN) { | |
63 | seq_puts(seq, "Interface Address Networks " | |
64 | "Status\n"); | |
65 | goto out; | |
66 | } | |
67 | ||
68 | iface = v; | |
69 | seq_printf(seq, "%-16s %04X:%02X %04X-%04X %d\n", | |
70 | iface->dev->name, ntohs(iface->address.s_net), | |
71 | iface->address.s_node, ntohs(iface->nets.nr_firstnet), | |
72 | ntohs(iface->nets.nr_lastnet), iface->status); | |
73 | out: | |
74 | return 0; | |
75 | } | |
76 | ||
77 | static __inline__ struct atalk_route *atalk_get_route_idx(loff_t pos) | |
78 | { | |
79 | struct atalk_route *r; | |
80 | ||
81 | for (r = atalk_routes; pos && r; r = r->next) | |
82 | --pos; | |
83 | ||
84 | return r; | |
85 | } | |
86 | ||
87 | static void *atalk_seq_route_start(struct seq_file *seq, loff_t *pos) | |
88 | { | |
89 | loff_t l = *pos; | |
90 | ||
91 | read_lock_bh(&atalk_routes_lock); | |
92 | return l ? atalk_get_route_idx(--l) : SEQ_START_TOKEN; | |
93 | } | |
94 | ||
95 | static void *atalk_seq_route_next(struct seq_file *seq, void *v, loff_t *pos) | |
96 | { | |
97 | struct atalk_route *r; | |
98 | ||
99 | ++*pos; | |
100 | if (v == SEQ_START_TOKEN) { | |
101 | r = NULL; | |
102 | if (atalk_routes) | |
103 | r = atalk_routes; | |
104 | goto out; | |
105 | } | |
106 | r = v; | |
107 | r = r->next; | |
108 | out: | |
109 | return r; | |
110 | } | |
111 | ||
112 | static void atalk_seq_route_stop(struct seq_file *seq, void *v) | |
113 | { | |
114 | read_unlock_bh(&atalk_routes_lock); | |
115 | } | |
116 | ||
117 | static int atalk_seq_route_show(struct seq_file *seq, void *v) | |
118 | { | |
119 | struct atalk_route *rt; | |
120 | ||
121 | if (v == SEQ_START_TOKEN) { | |
122 | seq_puts(seq, "Target Router Flags Dev\n"); | |
123 | goto out; | |
124 | } | |
125 | ||
126 | if (atrtr_default.dev) { | |
127 | rt = &atrtr_default; | |
128 | seq_printf(seq, "Default %04X:%02X %-4d %s\n", | |
129 | ntohs(rt->gateway.s_net), rt->gateway.s_node, | |
130 | rt->flags, rt->dev->name); | |
131 | } | |
132 | ||
133 | rt = v; | |
134 | seq_printf(seq, "%04X:%02X %04X:%02X %-4d %s\n", | |
135 | ntohs(rt->target.s_net), rt->target.s_node, | |
136 | ntohs(rt->gateway.s_net), rt->gateway.s_node, | |
137 | rt->flags, rt->dev->name); | |
138 | out: | |
139 | return 0; | |
140 | } | |
141 | ||
142 | static __inline__ struct sock *atalk_get_socket_idx(loff_t pos) | |
143 | { | |
144 | struct sock *s; | |
145 | struct hlist_node *node; | |
146 | ||
147 | sk_for_each(s, node, &atalk_sockets) | |
148 | if (!pos--) | |
149 | goto found; | |
150 | s = NULL; | |
151 | found: | |
152 | return s; | |
153 | } | |
154 | ||
155 | static void *atalk_seq_socket_start(struct seq_file *seq, loff_t *pos) | |
156 | { | |
157 | loff_t l = *pos; | |
158 | ||
159 | read_lock_bh(&atalk_sockets_lock); | |
160 | return l ? atalk_get_socket_idx(--l) : SEQ_START_TOKEN; | |
161 | } | |
162 | ||
163 | static void *atalk_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos) | |
164 | { | |
165 | struct sock *i; | |
166 | ||
167 | ++*pos; | |
168 | if (v == SEQ_START_TOKEN) { | |
169 | i = sk_head(&atalk_sockets); | |
170 | goto out; | |
171 | } | |
172 | i = sk_next(v); | |
173 | out: | |
174 | return i; | |
175 | } | |
176 | ||
177 | static void atalk_seq_socket_stop(struct seq_file *seq, void *v) | |
178 | { | |
179 | read_unlock_bh(&atalk_sockets_lock); | |
180 | } | |
181 | ||
182 | static int atalk_seq_socket_show(struct seq_file *seq, void *v) | |
183 | { | |
184 | struct sock *s; | |
185 | struct atalk_sock *at; | |
186 | ||
187 | if (v == SEQ_START_TOKEN) { | |
188 | seq_printf(seq, "Type Local_addr Remote_addr Tx_queue " | |
189 | "Rx_queue St UID\n"); | |
190 | goto out; | |
191 | } | |
192 | ||
193 | s = v; | |
194 | at = at_sk(s); | |
195 | ||
196 | seq_printf(seq, "%02X %04X:%02X:%02X %04X:%02X:%02X %08X:%08X " | |
197 | "%02X %d\n", | |
198 | s->sk_type, ntohs(at->src_net), at->src_node, at->src_port, | |
199 | ntohs(at->dest_net), at->dest_node, at->dest_port, | |
200 | atomic_read(&s->sk_wmem_alloc), | |
201 | atomic_read(&s->sk_rmem_alloc), | |
202 | s->sk_state, SOCK_INODE(s->sk_socket)->i_uid); | |
203 | out: | |
204 | return 0; | |
205 | } | |
206 | ||
56b3d975 | 207 | static const struct seq_operations atalk_seq_interface_ops = { |
1da177e4 LT |
208 | .start = atalk_seq_interface_start, |
209 | .next = atalk_seq_interface_next, | |
210 | .stop = atalk_seq_interface_stop, | |
211 | .show = atalk_seq_interface_show, | |
212 | }; | |
213 | ||
56b3d975 | 214 | static const struct seq_operations atalk_seq_route_ops = { |
1da177e4 LT |
215 | .start = atalk_seq_route_start, |
216 | .next = atalk_seq_route_next, | |
217 | .stop = atalk_seq_route_stop, | |
218 | .show = atalk_seq_route_show, | |
219 | }; | |
220 | ||
56b3d975 | 221 | static const struct seq_operations atalk_seq_socket_ops = { |
1da177e4 LT |
222 | .start = atalk_seq_socket_start, |
223 | .next = atalk_seq_socket_next, | |
224 | .stop = atalk_seq_socket_stop, | |
225 | .show = atalk_seq_socket_show, | |
226 | }; | |
227 | ||
228 | static int atalk_seq_interface_open(struct inode *inode, struct file *file) | |
229 | { | |
230 | return seq_open(file, &atalk_seq_interface_ops); | |
231 | } | |
232 | ||
233 | static int atalk_seq_route_open(struct inode *inode, struct file *file) | |
234 | { | |
235 | return seq_open(file, &atalk_seq_route_ops); | |
236 | } | |
237 | ||
238 | static int atalk_seq_socket_open(struct inode *inode, struct file *file) | |
239 | { | |
240 | return seq_open(file, &atalk_seq_socket_ops); | |
241 | } | |
242 | ||
9a32144e | 243 | static const struct file_operations atalk_seq_interface_fops = { |
1da177e4 LT |
244 | .owner = THIS_MODULE, |
245 | .open = atalk_seq_interface_open, | |
246 | .read = seq_read, | |
247 | .llseek = seq_lseek, | |
248 | .release = seq_release, | |
249 | }; | |
250 | ||
9a32144e | 251 | static const struct file_operations atalk_seq_route_fops = { |
1da177e4 LT |
252 | .owner = THIS_MODULE, |
253 | .open = atalk_seq_route_open, | |
254 | .read = seq_read, | |
255 | .llseek = seq_lseek, | |
256 | .release = seq_release, | |
257 | }; | |
258 | ||
9a32144e | 259 | static const struct file_operations atalk_seq_socket_fops = { |
1da177e4 LT |
260 | .owner = THIS_MODULE, |
261 | .open = atalk_seq_socket_open, | |
262 | .read = seq_read, | |
263 | .llseek = seq_lseek, | |
264 | .release = seq_release, | |
265 | }; | |
266 | ||
267 | static struct proc_dir_entry *atalk_proc_dir; | |
268 | ||
269 | int __init atalk_proc_init(void) | |
270 | { | |
271 | struct proc_dir_entry *p; | |
272 | int rc = -ENOMEM; | |
273 | ||
274 | atalk_proc_dir = proc_mkdir("atalk", proc_net); | |
275 | if (!atalk_proc_dir) | |
276 | goto out; | |
277 | atalk_proc_dir->owner = THIS_MODULE; | |
278 | ||
279 | p = create_proc_entry("interface", S_IRUGO, atalk_proc_dir); | |
280 | if (!p) | |
281 | goto out_interface; | |
282 | p->proc_fops = &atalk_seq_interface_fops; | |
283 | ||
284 | p = create_proc_entry("route", S_IRUGO, atalk_proc_dir); | |
285 | if (!p) | |
286 | goto out_route; | |
287 | p->proc_fops = &atalk_seq_route_fops; | |
288 | ||
289 | p = create_proc_entry("socket", S_IRUGO, atalk_proc_dir); | |
290 | if (!p) | |
291 | goto out_socket; | |
292 | p->proc_fops = &atalk_seq_socket_fops; | |
293 | ||
294 | p = create_proc_entry("arp", S_IRUGO, atalk_proc_dir); | |
ed4477b9 | 295 | if (!p) |
1da177e4 LT |
296 | goto out_arp; |
297 | p->proc_fops = &atalk_seq_arp_fops; | |
298 | ||
299 | rc = 0; | |
300 | out: | |
301 | return rc; | |
302 | out_arp: | |
303 | remove_proc_entry("socket", atalk_proc_dir); | |
304 | out_socket: | |
305 | remove_proc_entry("route", atalk_proc_dir); | |
306 | out_route: | |
307 | remove_proc_entry("interface", atalk_proc_dir); | |
308 | out_interface: | |
309 | remove_proc_entry("atalk", proc_net); | |
310 | goto out; | |
311 | } | |
312 | ||
313 | void __exit atalk_proc_exit(void) | |
314 | { | |
315 | remove_proc_entry("interface", atalk_proc_dir); | |
316 | remove_proc_entry("route", atalk_proc_dir); | |
317 | remove_proc_entry("socket", atalk_proc_dir); | |
318 | remove_proc_entry("arp", atalk_proc_dir); | |
319 | remove_proc_entry("atalk", proc_net); | |
320 | } |