Bluetooth: Convert debug files to actually use debugfs instead of sysfs
[linux-2.6.git] / net / bluetooth / sco.c
index 967a751..e5b16b7 100644 (file)
@@ -38,6 +38,8 @@
 #include <linux/socket.h>
 #include <linux/skbuff.h>
 #include <linux/device.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
 #include <linux/list.h>
 #include <net/sock.h>
 
@@ -953,37 +955,36 @@ drop:
        return 0;
 }
 
-static ssize_t sco_sysfs_show(struct class *dev,
-                               struct class_attribute *attr,
-                               char *buf)
+static int sco_debugfs_show(struct seq_file *f, void *p)
 {
        struct sock *sk;
        struct hlist_node *node;
-       char *str = buf;
-       int size = PAGE_SIZE;
 
        read_lock_bh(&sco_sk_list.lock);
 
        sk_for_each(sk, node, &sco_sk_list.head) {
-               int len;
-
-               len = snprintf(str, size, "%s %s %d\n",
-                               batostr(&bt_sk(sk)->src), batostr(&bt_sk(sk)->dst),
-                               sk->sk_state);
-
-               size -= len;
-               if (size <= 0)
-                       break;
-
-               str += len;
+               seq_printf(f, "%s %s %d\n", batostr(&bt_sk(sk)->src),
+                               batostr(&bt_sk(sk)->dst), sk->sk_state);
        }
 
        read_unlock_bh(&sco_sk_list.lock);
 
-       return (str - buf);
+       return 0;
 }
 
-static CLASS_ATTR(sco, S_IRUGO, sco_sysfs_show, NULL);
+static int sco_debugfs_open(struct inode *inode, struct file *file)
+{
+       return single_open(file, sco_debugfs_show, inode->i_private);
+}
+
+static const struct file_operations sco_debugfs_fops = {
+       .open           = sco_debugfs_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = single_release,
+};
+
+static struct dentry *sco_debugfs;
 
 static const struct proto_ops sco_sock_ops = {
        .family         = PF_BLUETOOTH,
@@ -1041,8 +1042,12 @@ static int __init sco_init(void)
                goto error;
        }
 
-       if (class_create_file(bt_class, &class_attr_sco) < 0)
-               BT_ERR("Failed to create SCO info file");
+       if (bt_debugfs) {
+               sco_debugfs = debugfs_create_file("sco", 0444,
+                                       bt_debugfs, NULL, &sco_debugfs_fops);
+               if (!sco_debugfs)
+                       BT_ERR("Failed to create SCO debug file");
+       }
 
        BT_INFO("SCO (Voice Link) ver %s", VERSION);
        BT_INFO("SCO socket layer initialized");
@@ -1056,7 +1061,7 @@ error:
 
 static void __exit sco_exit(void)
 {
-       class_remove_file(bt_class, &class_attr_sco);
+       debugfs_remove(sco_debugfs);
 
        if (bt_sock_unregister(BTPROTO_SCO) < 0)
                BT_ERR("SCO socket unregistration failed");