File: /usr/src/linux/net/bluetooth/l2cap_proc.c
1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23 */
24
25 /*
26 * BlueZ L2CAP proc fs support.
27 *
28 * $Id: l2cap_proc.c,v 1.2 2001/06/02 01:40:09 maxk Exp $
29 */
30
31 #include <linux/config.h>
32 #include <linux/module.h>
33
34 #include <linux/types.h>
35 #include <linux/errno.h>
36 #include <linux/kernel.h>
37 #include <linux/major.h>
38 #include <linux/sched.h>
39 #include <linux/slab.h>
40 #include <linux/poll.h>
41 #include <linux/fcntl.h>
42 #include <linux/init.h>
43 #include <linux/skbuff.h>
44 #include <linux/interrupt.h>
45 #include <linux/socket.h>
46 #include <linux/skbuff.h>
47 #include <linux/proc_fs.h>
48 #include <linux/list.h>
49 #include <net/sock.h>
50
51 #include <asm/system.h>
52 #include <asm/uaccess.h>
53
54 #include <net/bluetooth/bluez.h>
55 #include <net/bluetooth/bluetooth.h>
56 #include <net/bluetooth/hci_core.h>
57 #include <net/bluetooth/l2cap_core.h>
58
59 #ifndef L2CAP_DEBUG
60 #undef DBG
61 #define DBG( A... )
62 #endif
63
64 /* ----- PROC fs support ----- */
65 static int l2cap_conn_dump(char *buf, struct l2cap_iff *iff)
66 {
67 struct list_head *p;
68 char *ptr = buf;
69
70 list_for_each(p, &iff->conn_list) {
71 struct l2cap_conn *c;
72
73 c = list_entry(p, struct l2cap_conn, list);
74 ptr += sprintf(ptr, " %p %d %p %p %s %s\n",
75 c, c->state, c->iff, c->hconn, batostr(&c->src), batostr(&c->dst));
76 }
77
78 return ptr - buf;
79 }
80
81 static int l2cap_iff_dump(char *buf)
82 {
83 struct list_head *p;
84 char *ptr = buf;
85
86 ptr += sprintf(ptr, "Interfaces:\n");
87
88 write_lock(&l2cap_rt_lock);
89
90 list_for_each(p, &l2cap_iff_list) {
91 struct l2cap_iff *iff;
92
93 iff = list_entry(p, struct l2cap_iff, list);
94
95 ptr += sprintf(ptr, " %s %p %p\n", iff->hdev->name, iff, iff->hdev);
96
97 l2cap_iff_lock(iff);
98 ptr += l2cap_conn_dump(ptr, iff);
99 l2cap_iff_unlock(iff);
100 }
101
102 write_unlock(&l2cap_rt_lock);
103
104 ptr += sprintf(ptr, "\n");
105
106 return ptr - buf;
107 }
108
109 static int l2cap_sock_dump(char *buf, struct bluez_sock_list *list)
110 {
111 struct l2cap_pinfo *pi;
112 struct sock *sk;
113 char *ptr = buf;
114
115 ptr += sprintf(ptr, "Sockets:\n");
116
117 write_lock(&list->lock);
118
119 for (sk = list->head; sk; sk = sk->next) {
120 pi = l2cap_pi(sk);
121 ptr += sprintf(ptr, " %p %d %p %d %s %s 0x%4.4x 0x%4.4x %d %d\n", sk, sk->state, pi->conn, pi->psm,
122 batostr(&pi->src), batostr(&pi->dst), pi->scid, pi->dcid, pi->imtu, pi->omtu );
123 }
124
125 write_unlock(&list->lock);
126
127 ptr += sprintf(ptr, "\n");
128
129 return ptr - buf;
130 }
131
132 static int l2cap_read_proc(char *buf, char **start, off_t offset, int count, int *eof, void *priv)
133 {
134 char *ptr = buf;
135 int len;
136
137 DBG("count %d, offset %ld", count, offset);
138
139 ptr += l2cap_iff_dump(ptr);
140 ptr += l2cap_sock_dump(ptr, &l2cap_sk_list);
141 len = ptr - buf;
142
143 if (len <= count + offset)
144 *eof = 1;
145
146 *start = buf + offset;
147 len -= offset;
148
149 if (len > count)
150 len = count;
151 if (len < 0)
152 len = 0;
153
154 return len;
155 }
156
157 void l2cap_register_proc(void)
158 {
159 create_proc_read_entry("bluetooth/l2cap", 0, 0, l2cap_read_proc, NULL);
160 }
161
162 void l2cap_unregister_proc(void)
163 {
164 remove_proc_entry("bluetooth/l2cap", NULL);
165 }
166