Commit | Line | Data |
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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) | |
ca629f24 | 30 | __acquires(atalk_interfaces_lock) |
1da177e4 LT |
31 | { |
32 | loff_t l = *pos; | |
33 | ||
34 | read_lock_bh(&atalk_interfaces_lock); | |
35 | return l ? atalk_get_interface_idx(--l) : SEQ_START_TOKEN; | |
36 | } | |
37 | ||
38 | static void *atalk_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos) | |
39 | { | |
40 | struct atalk_iface *i; | |
41 | ||
42 | ++*pos; | |
43 | if (v == SEQ_START_TOKEN) { | |
44 | i = NULL; | |
45 | if (atalk_interfaces) | |
46 | i = atalk_interfaces; | |
47 | goto out; | |
48 | } | |
49 | i = v; | |
50 | i = i->next; | |
51 | out: | |
52 | return i; | |
53 | } | |
54 | ||
55 | static void atalk_seq_interface_stop(struct seq_file *seq, void *v) | |
ca629f24 | 56 | __releases(atalk_interfaces_lock) |
1da177e4 LT |
57 | { |
58 | read_unlock_bh(&atalk_interfaces_lock); | |
59 | } | |
60 | ||
61 | static int atalk_seq_interface_show(struct seq_file *seq, void *v) | |
62 | { | |
63 | struct atalk_iface *iface; | |
64 | ||
65 | if (v == SEQ_START_TOKEN) { | |
66 | seq_puts(seq, "Interface Address Networks " | |
67 | "Status\n"); | |
68 | goto out; | |
69 | } | |
70 | ||
71 | iface = v; | |
72 | seq_printf(seq, "%-16s %04X:%02X %04X-%04X %d\n", | |
73 | iface->dev->name, ntohs(iface->address.s_net), | |
74 | iface->address.s_node, ntohs(iface->nets.nr_firstnet), | |
75 | ntohs(iface->nets.nr_lastnet), iface->status); | |
76 | out: | |
77 | return 0; | |
78 | } | |
79 | ||
80 | static __inline__ struct atalk_route *atalk_get_route_idx(loff_t pos) | |
81 | { | |
82 | struct atalk_route *r; | |
83 | ||
84 | for (r = atalk_routes; pos && r; r = r->next) | |
85 | --pos; | |
86 | ||
87 | return r; | |
88 | } | |
89 | ||
90 | static void *atalk_seq_route_start(struct seq_file *seq, loff_t *pos) | |
ca629f24 | 91 | __acquires(atalk_routes_lock) |
1da177e4 LT |
92 | { |
93 | loff_t l = *pos; | |
94 | ||
95 | read_lock_bh(&atalk_routes_lock); | |
96 | return l ? atalk_get_route_idx(--l) : SEQ_START_TOKEN; | |
97 | } | |
98 | ||
99 | static void *atalk_seq_route_next(struct seq_file *seq, void *v, loff_t *pos) | |
100 | { | |
101 | struct atalk_route *r; | |
102 | ||
103 | ++*pos; | |
104 | if (v == SEQ_START_TOKEN) { | |
105 | r = NULL; | |
106 | if (atalk_routes) | |
107 | r = atalk_routes; | |
108 | goto out; | |
109 | } | |
110 | r = v; | |
111 | r = r->next; | |
112 | out: | |
113 | return r; | |
114 | } | |
115 | ||
116 | static void atalk_seq_route_stop(struct seq_file *seq, void *v) | |
ca629f24 | 117 | __releases(atalk_routes_lock) |
1da177e4 LT |
118 | { |
119 | read_unlock_bh(&atalk_routes_lock); | |
120 | } | |
121 | ||
122 | static int atalk_seq_route_show(struct seq_file *seq, void *v) | |
123 | { | |
124 | struct atalk_route *rt; | |
125 | ||
126 | if (v == SEQ_START_TOKEN) { | |
127 | seq_puts(seq, "Target Router Flags Dev\n"); | |
128 | goto out; | |
129 | } | |
130 | ||
131 | if (atrtr_default.dev) { | |
132 | rt = &atrtr_default; | |
133 | seq_printf(seq, "Default %04X:%02X %-4d %s\n", | |
134 | ntohs(rt->gateway.s_net), rt->gateway.s_node, | |
135 | rt->flags, rt->dev->name); | |
136 | } | |
137 | ||
138 | rt = v; | |
139 | seq_printf(seq, "%04X:%02X %04X:%02X %-4d %s\n", | |
140 | ntohs(rt->target.s_net), rt->target.s_node, | |
141 | ntohs(rt->gateway.s_net), rt->gateway.s_node, | |
142 | rt->flags, rt->dev->name); | |
143 | out: | |
144 | return 0; | |
145 | } | |
146 | ||
147 | static __inline__ struct sock *atalk_get_socket_idx(loff_t pos) | |
148 | { | |
149 | struct sock *s; | |
150 | struct hlist_node *node; | |
151 | ||
152 | sk_for_each(s, node, &atalk_sockets) | |
153 | if (!pos--) | |
154 | goto found; | |
155 | s = NULL; | |
156 | found: | |
157 | return s; | |
158 | } | |
159 | ||
160 | static void *atalk_seq_socket_start(struct seq_file *seq, loff_t *pos) | |
ca629f24 | 161 | __acquires(atalk_sockets_lock) |
1da177e4 LT |
162 | { |
163 | loff_t l = *pos; | |
164 | ||
165 | read_lock_bh(&atalk_sockets_lock); | |
166 | return l ? atalk_get_socket_idx(--l) : SEQ_START_TOKEN; | |
167 | } | |
168 | ||
169 | static void *atalk_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos) | |
170 | { | |
171 | struct sock *i; | |
172 | ||
173 | ++*pos; | |
174 | if (v == SEQ_START_TOKEN) { | |
175 | i = sk_head(&atalk_sockets); | |
176 | goto out; | |
177 | } | |
178 | i = sk_next(v); | |
179 | out: | |
180 | return i; | |
181 | } | |
182 | ||
183 | static void atalk_seq_socket_stop(struct seq_file *seq, void *v) | |
ca629f24 | 184 | __releases(atalk_sockets_lock) |
1da177e4 LT |
185 | { |
186 | read_unlock_bh(&atalk_sockets_lock); | |
187 | } | |
188 | ||
189 | static int atalk_seq_socket_show(struct seq_file *seq, void *v) | |
190 | { | |
191 | struct sock *s; | |
192 | struct atalk_sock *at; | |
193 | ||
194 | if (v == SEQ_START_TOKEN) { | |
195 | seq_printf(seq, "Type Local_addr Remote_addr Tx_queue " | |
196 | "Rx_queue St UID\n"); | |
197 | goto out; | |
198 | } | |
199 | ||
200 | s = v; | |
201 | at = at_sk(s); | |
202 | ||
203 | seq_printf(seq, "%02X %04X:%02X:%02X %04X:%02X:%02X %08X:%08X " | |
204 | "%02X %d\n", | |
205 | s->sk_type, ntohs(at->src_net), at->src_node, at->src_port, | |
206 | ntohs(at->dest_net), at->dest_node, at->dest_port, | |
207 | atomic_read(&s->sk_wmem_alloc), | |
208 | atomic_read(&s->sk_rmem_alloc), | |
209 | s->sk_state, SOCK_INODE(s->sk_socket)->i_uid); | |
210 | out: | |
211 | return 0; | |
212 | } | |
213 | ||
56b3d975 | 214 | static const struct seq_operations atalk_seq_interface_ops = { |
1da177e4 LT |
215 | .start = atalk_seq_interface_start, |
216 | .next = atalk_seq_interface_next, | |
217 | .stop = atalk_seq_interface_stop, | |
218 | .show = atalk_seq_interface_show, | |
219 | }; | |
220 | ||
56b3d975 | 221 | static const struct seq_operations atalk_seq_route_ops = { |
1da177e4 LT |
222 | .start = atalk_seq_route_start, |
223 | .next = atalk_seq_route_next, | |
224 | .stop = atalk_seq_route_stop, | |
225 | .show = atalk_seq_route_show, | |
226 | }; | |
227 | ||
56b3d975 | 228 | static const struct seq_operations atalk_seq_socket_ops = { |
1da177e4 LT |
229 | .start = atalk_seq_socket_start, |
230 | .next = atalk_seq_socket_next, | |
231 | .stop = atalk_seq_socket_stop, | |
232 | .show = atalk_seq_socket_show, | |
233 | }; | |
234 | ||
235 | static int atalk_seq_interface_open(struct inode *inode, struct file *file) | |
236 | { | |
237 | return seq_open(file, &atalk_seq_interface_ops); | |
238 | } | |
239 | ||
240 | static int atalk_seq_route_open(struct inode *inode, struct file *file) | |
241 | { | |
242 | return seq_open(file, &atalk_seq_route_ops); | |
243 | } | |
244 | ||
245 | static int atalk_seq_socket_open(struct inode *inode, struct file *file) | |
246 | { | |
247 | return seq_open(file, &atalk_seq_socket_ops); | |
248 | } | |
249 | ||
9a32144e | 250 | static const struct file_operations atalk_seq_interface_fops = { |
1da177e4 LT |
251 | .owner = THIS_MODULE, |
252 | .open = atalk_seq_interface_open, | |
253 | .read = seq_read, | |
254 | .llseek = seq_lseek, | |
255 | .release = seq_release, | |
256 | }; | |
257 | ||
9a32144e | 258 | static const struct file_operations atalk_seq_route_fops = { |
1da177e4 LT |
259 | .owner = THIS_MODULE, |
260 | .open = atalk_seq_route_open, | |
261 | .read = seq_read, | |
262 | .llseek = seq_lseek, | |
263 | .release = seq_release, | |
264 | }; | |
265 | ||
9a32144e | 266 | static const struct file_operations atalk_seq_socket_fops = { |
1da177e4 LT |
267 | .owner = THIS_MODULE, |
268 | .open = atalk_seq_socket_open, | |
269 | .read = seq_read, | |
270 | .llseek = seq_lseek, | |
271 | .release = seq_release, | |
272 | }; | |
273 | ||
274 | static struct proc_dir_entry *atalk_proc_dir; | |
275 | ||
276 | int __init atalk_proc_init(void) | |
277 | { | |
278 | struct proc_dir_entry *p; | |
279 | int rc = -ENOMEM; | |
280 | ||
457c4cbc | 281 | atalk_proc_dir = proc_mkdir("atalk", init_net.proc_net); |
1da177e4 LT |
282 | if (!atalk_proc_dir) |
283 | goto out; | |
284 | atalk_proc_dir->owner = THIS_MODULE; | |
285 | ||
ed2b5b47 WC |
286 | p = proc_create("interface", S_IRUGO, atalk_proc_dir, |
287 | &atalk_seq_interface_fops); | |
1da177e4 LT |
288 | if (!p) |
289 | goto out_interface; | |
1da177e4 | 290 | |
ed2b5b47 WC |
291 | p = proc_create("route", S_IRUGO, atalk_proc_dir, |
292 | &atalk_seq_route_fops); | |
1da177e4 LT |
293 | if (!p) |
294 | goto out_route; | |
1da177e4 | 295 | |
ed2b5b47 WC |
296 | p = proc_create("socket", S_IRUGO, atalk_proc_dir, |
297 | &atalk_seq_socket_fops); | |
1da177e4 LT |
298 | if (!p) |
299 | goto out_socket; | |
1da177e4 | 300 | |
ed2b5b47 | 301 | p = proc_create("arp", S_IRUGO, atalk_proc_dir, &atalk_seq_arp_fops); |
ed4477b9 | 302 | if (!p) |
1da177e4 | 303 | goto out_arp; |
1da177e4 LT |
304 | |
305 | rc = 0; | |
306 | out: | |
307 | return rc; | |
308 | out_arp: | |
309 | remove_proc_entry("socket", atalk_proc_dir); | |
310 | out_socket: | |
311 | remove_proc_entry("route", atalk_proc_dir); | |
312 | out_route: | |
313 | remove_proc_entry("interface", atalk_proc_dir); | |
314 | out_interface: | |
457c4cbc | 315 | remove_proc_entry("atalk", init_net.proc_net); |
1da177e4 LT |
316 | goto out; |
317 | } | |
318 | ||
319 | void __exit atalk_proc_exit(void) | |
320 | { | |
321 | remove_proc_entry("interface", atalk_proc_dir); | |
322 | remove_proc_entry("route", atalk_proc_dir); | |
323 | remove_proc_entry("socket", atalk_proc_dir); | |
324 | remove_proc_entry("arp", atalk_proc_dir); | |
457c4cbc | 325 | remove_proc_entry("atalk", init_net.proc_net); |
1da177e4 | 326 | } |