blob: b5b1a221c242d981dff59a483bdcd496849ab157 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#include <linux/init.h>
12#include <linux/proc_fs.h>
13#include <linux/seq_file.h>
Eric W. Biederman457c4cb2007-09-12 12:01:34 +020014#include <net/net_namespace.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <net/sock.h>
16#include <linux/atalk.h>
Paul Gortmakerbc3b2d72011-07-15 11:47:34 -040017#include <linux/export.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018
19
20static __inline__ struct atalk_iface *atalk_get_interface_idx(loff_t pos)
21{
22 struct atalk_iface *i;
23
24 for (i = atalk_interfaces; pos && i; i = i->next)
25 --pos;
26
27 return i;
28}
29
30static void *atalk_seq_interface_start(struct seq_file *seq, loff_t *pos)
Eric Dumazetca629f242008-01-15 03:28:43 -080031 __acquires(atalk_interfaces_lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -070032{
33 loff_t l = *pos;
34
35 read_lock_bh(&atalk_interfaces_lock);
36 return l ? atalk_get_interface_idx(--l) : SEQ_START_TOKEN;
37}
38
39static void *atalk_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos)
40{
41 struct atalk_iface *i;
42
43 ++*pos;
44 if (v == SEQ_START_TOKEN) {
45 i = NULL;
46 if (atalk_interfaces)
47 i = atalk_interfaces;
48 goto out;
49 }
50 i = v;
51 i = i->next;
52out:
53 return i;
54}
55
56static void atalk_seq_interface_stop(struct seq_file *seq, void *v)
Eric Dumazetca629f242008-01-15 03:28:43 -080057 __releases(atalk_interfaces_lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -070058{
59 read_unlock_bh(&atalk_interfaces_lock);
60}
61
62static int atalk_seq_interface_show(struct seq_file *seq, void *v)
63{
64 struct atalk_iface *iface;
65
66 if (v == SEQ_START_TOKEN) {
67 seq_puts(seq, "Interface Address Networks "
68 "Status\n");
69 goto out;
70 }
71
72 iface = v;
73 seq_printf(seq, "%-16s %04X:%02X %04X-%04X %d\n",
74 iface->dev->name, ntohs(iface->address.s_net),
75 iface->address.s_node, ntohs(iface->nets.nr_firstnet),
76 ntohs(iface->nets.nr_lastnet), iface->status);
77out:
78 return 0;
79}
80
81static __inline__ struct atalk_route *atalk_get_route_idx(loff_t pos)
82{
83 struct atalk_route *r;
84
85 for (r = atalk_routes; pos && r; r = r->next)
86 --pos;
87
88 return r;
89}
90
91static void *atalk_seq_route_start(struct seq_file *seq, loff_t *pos)
Eric Dumazetca629f242008-01-15 03:28:43 -080092 __acquires(atalk_routes_lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -070093{
94 loff_t l = *pos;
95
96 read_lock_bh(&atalk_routes_lock);
97 return l ? atalk_get_route_idx(--l) : SEQ_START_TOKEN;
98}
99
100static void *atalk_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
101{
102 struct atalk_route *r;
103
104 ++*pos;
105 if (v == SEQ_START_TOKEN) {
106 r = NULL;
107 if (atalk_routes)
108 r = atalk_routes;
109 goto out;
110 }
111 r = v;
112 r = r->next;
113out:
114 return r;
115}
116
117static void atalk_seq_route_stop(struct seq_file *seq, void *v)
Eric Dumazetca629f242008-01-15 03:28:43 -0800118 __releases(atalk_routes_lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119{
120 read_unlock_bh(&atalk_routes_lock);
121}
122
123static int atalk_seq_route_show(struct seq_file *seq, void *v)
124{
125 struct atalk_route *rt;
126
127 if (v == SEQ_START_TOKEN) {
128 seq_puts(seq, "Target Router Flags Dev\n");
129 goto out;
130 }
131
132 if (atrtr_default.dev) {
133 rt = &atrtr_default;
134 seq_printf(seq, "Default %04X:%02X %-4d %s\n",
135 ntohs(rt->gateway.s_net), rt->gateway.s_node,
136 rt->flags, rt->dev->name);
137 }
138
139 rt = v;
140 seq_printf(seq, "%04X:%02X %04X:%02X %-4d %s\n",
141 ntohs(rt->target.s_net), rt->target.s_node,
142 ntohs(rt->gateway.s_net), rt->gateway.s_node,
143 rt->flags, rt->dev->name);
144out:
145 return 0;
146}
147
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148static void *atalk_seq_socket_start(struct seq_file *seq, loff_t *pos)
Eric Dumazetca629f242008-01-15 03:28:43 -0800149 __acquires(atalk_sockets_lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151 read_lock_bh(&atalk_sockets_lock);
Li Zefanefaffb72010-02-08 23:20:15 +0000152 return seq_hlist_start_head(&atalk_sockets, *pos);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153}
154
155static void *atalk_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
156{
Li Zefanefaffb72010-02-08 23:20:15 +0000157 return seq_hlist_next(v, &atalk_sockets, pos);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158}
159
160static void atalk_seq_socket_stop(struct seq_file *seq, void *v)
Eric Dumazetca629f242008-01-15 03:28:43 -0800161 __releases(atalk_sockets_lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162{
163 read_unlock_bh(&atalk_sockets_lock);
164}
165
166static int atalk_seq_socket_show(struct seq_file *seq, void *v)
167{
168 struct sock *s;
169 struct atalk_sock *at;
170
171 if (v == SEQ_START_TOKEN) {
172 seq_printf(seq, "Type Local_addr Remote_addr Tx_queue "
173 "Rx_queue St UID\n");
174 goto out;
175 }
176
Li Zefanefaffb72010-02-08 23:20:15 +0000177 s = sk_entry(v);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 at = at_sk(s);
179
180 seq_printf(seq, "%02X %04X:%02X:%02X %04X:%02X:%02X %08X:%08X "
181 "%02X %d\n",
182 s->sk_type, ntohs(at->src_net), at->src_node, at->src_port,
183 ntohs(at->dest_net), at->dest_node, at->dest_port,
Eric Dumazet31e6d362009-06-17 19:05:41 -0700184 sk_wmem_alloc_get(s),
185 sk_rmem_alloc_get(s),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 s->sk_state, SOCK_INODE(s->sk_socket)->i_uid);
187out:
188 return 0;
189}
190
Philippe De Muyter56b3d972007-07-10 23:07:31 -0700191static const struct seq_operations atalk_seq_interface_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 .start = atalk_seq_interface_start,
193 .next = atalk_seq_interface_next,
194 .stop = atalk_seq_interface_stop,
195 .show = atalk_seq_interface_show,
196};
197
Philippe De Muyter56b3d972007-07-10 23:07:31 -0700198static const struct seq_operations atalk_seq_route_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 .start = atalk_seq_route_start,
200 .next = atalk_seq_route_next,
201 .stop = atalk_seq_route_stop,
202 .show = atalk_seq_route_show,
203};
204
Philippe De Muyter56b3d972007-07-10 23:07:31 -0700205static const struct seq_operations atalk_seq_socket_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 .start = atalk_seq_socket_start,
207 .next = atalk_seq_socket_next,
208 .stop = atalk_seq_socket_stop,
209 .show = atalk_seq_socket_show,
210};
211
212static int atalk_seq_interface_open(struct inode *inode, struct file *file)
213{
214 return seq_open(file, &atalk_seq_interface_ops);
215}
216
217static int atalk_seq_route_open(struct inode *inode, struct file *file)
218{
219 return seq_open(file, &atalk_seq_route_ops);
220}
221
222static int atalk_seq_socket_open(struct inode *inode, struct file *file)
223{
224 return seq_open(file, &atalk_seq_socket_ops);
225}
226
Arjan van de Ven9a321442007-02-12 00:55:35 -0800227static const struct file_operations atalk_seq_interface_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228 .owner = THIS_MODULE,
229 .open = atalk_seq_interface_open,
230 .read = seq_read,
231 .llseek = seq_lseek,
232 .release = seq_release,
233};
234
Arjan van de Ven9a321442007-02-12 00:55:35 -0800235static const struct file_operations atalk_seq_route_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 .owner = THIS_MODULE,
237 .open = atalk_seq_route_open,
238 .read = seq_read,
239 .llseek = seq_lseek,
240 .release = seq_release,
241};
242
Arjan van de Ven9a321442007-02-12 00:55:35 -0800243static const struct file_operations atalk_seq_socket_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 .owner = THIS_MODULE,
245 .open = atalk_seq_socket_open,
246 .read = seq_read,
247 .llseek = seq_lseek,
248 .release = seq_release,
249};
250
251static struct proc_dir_entry *atalk_proc_dir;
252
253int __init atalk_proc_init(void)
254{
255 struct proc_dir_entry *p;
256 int rc = -ENOMEM;
257
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200258 atalk_proc_dir = proc_mkdir("atalk", init_net.proc_net);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 if (!atalk_proc_dir)
260 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261
Wang Chened2b5b42008-02-28 12:53:32 -0800262 p = proc_create("interface", S_IRUGO, atalk_proc_dir,
263 &atalk_seq_interface_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 if (!p)
265 goto out_interface;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266
Wang Chened2b5b42008-02-28 12:53:32 -0800267 p = proc_create("route", S_IRUGO, atalk_proc_dir,
268 &atalk_seq_route_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 if (!p)
270 goto out_route;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271
Wang Chened2b5b42008-02-28 12:53:32 -0800272 p = proc_create("socket", S_IRUGO, atalk_proc_dir,
273 &atalk_seq_socket_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274 if (!p)
275 goto out_socket;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276
Wang Chened2b5b42008-02-28 12:53:32 -0800277 p = proc_create("arp", S_IRUGO, atalk_proc_dir, &atalk_seq_arp_fops);
YOSHIFUJI Hideakied4477b2007-02-09 23:24:27 +0900278 if (!p)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279 goto out_arp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280
281 rc = 0;
282out:
283 return rc;
284out_arp:
285 remove_proc_entry("socket", atalk_proc_dir);
286out_socket:
287 remove_proc_entry("route", atalk_proc_dir);
288out_route:
289 remove_proc_entry("interface", atalk_proc_dir);
290out_interface:
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200291 remove_proc_entry("atalk", init_net.proc_net);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 goto out;
293}
294
295void __exit atalk_proc_exit(void)
296{
297 remove_proc_entry("interface", atalk_proc_dir);
298 remove_proc_entry("route", atalk_proc_dir);
299 remove_proc_entry("socket", atalk_proc_dir);
300 remove_proc_entry("arp", atalk_proc_dir);
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200301 remove_proc_entry("atalk", init_net.proc_net);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302}