[Bluetooth]: Remove the usage of /proc completely

This patch removes all relics of the /proc usage from the Bluetooth
subsystem core and its upper layers. All the previous information are
now available via /sys/class/bluetooth through appropriate functions.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 16 insertions, 82 deletions

diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 59b2dd36baa7..e3bb11ca4235 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -38,9 +38,8 @@
 #include <linux/interrupt.h>
 #include <linux/socket.h>
 #include <linux/skbuff.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
 #include <linux/list.h>
+#include <linux/device.h>
 #include <net/sock.h>
 
 #include <asm/system.h>
@@ -56,7 +55,7 @@
 #define BT_DBG(D...)
 #endif
 
-#define VERSION "2.7"
+#define VERSION "2.8"
 
 static struct proto_ops l2cap_sock_ops;
 
@@ -2137,94 +2136,29 @@ drop:
         return 0;
 }
 
-/* ---- Proc fs support ---- */
-#ifdef CONFIG_PROC_FS
-static void *l2cap_seq_start(struct seq_file *seq, loff_t *pos)
+static ssize_t l2cap_sysfs_show(struct class *dev, char *buf)
 {
         struct sock *sk;
         struct hlist_node *node;
-        loff_t l = *pos;
+        char *str = buf;
 
         read_lock_bh(&l2cap_sk_list.lock);
 
-        sk_for_each(sk, node, &l2cap_sk_list.head)
-                if (!l--)
-                        goto found;
-        sk = NULL;
-found:
-        return sk;
-}
+        sk_for_each(sk, node, &l2cap_sk_list.head) {
+                struct l2cap_pinfo *pi = l2cap_pi(sk);
 
-static void *l2cap_seq_next(struct seq_file *seq, void *e, loff_t *pos)
-{
-        (*pos)++;
-        return sk_next(e);
-}
+                str += sprintf(str, "%s %s %d %d 0x%4.4x 0x%4.4x %d %d 0x%x\n",
+                                batostr(&bt_sk(sk)->src), batostr(&bt_sk(sk)->dst),
+                                sk->sk_state, pi->psm, pi->scid, pi->dcid, pi->imtu,
+                                pi->omtu, pi->link_mode);
+        }
 
-static void l2cap_seq_stop(struct seq_file *seq, void *e)
-{
         read_unlock_bh(&l2cap_sk_list.lock);
-}
 
-static int  l2cap_seq_show(struct seq_file *seq, void *e)
-{
-        struct sock *sk = e;
-        struct l2cap_pinfo *pi = l2cap_pi(sk);
-
-        seq_printf(seq, "%s %s %d %d 0x%4.4x 0x%4.4x %d %d 0x%x\n",
-                        batostr(&bt_sk(sk)->src), batostr(&bt_sk(sk)->dst), 
-                        sk->sk_state, pi->psm, pi->scid, pi->dcid, pi->imtu,
-                        pi->omtu, pi->link_mode);
-        return 0;
+        return (str - buf);
 }
 
-static struct seq_operations l2cap_seq_ops = {
-        .start  = l2cap_seq_start,
-        .next   = l2cap_seq_next,
-        .stop   = l2cap_seq_stop,
-        .show   = l2cap_seq_show 
-};
-
-static int l2cap_seq_open(struct inode *inode, struct file *file)
-{
-        return seq_open(file, &l2cap_seq_ops);
-}
-
-static struct file_operations l2cap_seq_fops = {
-        .owner          = THIS_MODULE,
-        .open           = l2cap_seq_open,
-        .read           = seq_read,
-        .llseek         = seq_lseek,
-        .release        = seq_release,
-};
-
-static int __init l2cap_proc_init(void)
-{
-        struct proc_dir_entry *p = create_proc_entry("l2cap", S_IRUGO, proc_bt);
-        if (!p)
-                return -ENOMEM;
-        p->owner     = THIS_MODULE;
-        p->proc_fops = &l2cap_seq_fops;
-        return 0;
-}
-
-static void __exit l2cap_proc_cleanup(void)
-{
-        remove_proc_entry("l2cap", proc_bt);
-}
-
-#else /* CONFIG_PROC_FS */
-
-static int __init l2cap_proc_init(void)
-{
-        return 0;
-}
-
-static void __exit l2cap_proc_cleanup(void)
-{
-        return;
-}
-#endif /* CONFIG_PROC_FS */
+static CLASS_ATTR(l2cap, S_IRUGO, l2cap_sysfs_show, NULL);
 
 static struct proto_ops l2cap_sock_ops = {
         .family         = PF_BLUETOOTH,
@@ -2266,7 +2200,7 @@ static struct hci_proto l2cap_hci_proto = {
 static int __init l2cap_init(void)
 {
         int err;
-        
+
         err = proto_register(&l2cap_proto, 0);
         if (err < 0)
                 return err;
@@ -2284,7 +2218,7 @@ static int __init l2cap_init(void)
                 goto error;
         }
 
-        l2cap_proc_init();
+        class_create_file(&bt_class, &class_attr_l2cap);
 
         BT_INFO("L2CAP ver %s", VERSION);
         BT_INFO("L2CAP socket layer initialized");
@@ -2298,7 +2232,7 @@ error:
 
 static void __exit l2cap_exit(void)
 {
-        l2cap_proc_cleanup();
+        class_remove_file(&bt_class, &class_attr_l2cap);
 
         if (bt_sock_unregister(BTPROTO_L2CAP) < 0)
                 BT_ERR("L2CAP socket unregistration failed");