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authorMasatake YAMATO2012-07-25 18:26:32 +0200
committerGustavo Padovan2012-08-06 20:02:58 +0200
commit256a06c8a85df676e80263af349daad1283e529e (patch)
treefeb44aa2fcbcc0ec6a4827f8323153bba4a380fc /include/net/bluetooth/bluetooth.h
parentBluetooth: Free the l2cap channel list only when refcount is zero (diff)
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Bluetooth: /proc/net/ entries for bluetooth protocols
lsof command can tell the type of socket processes are using. Internal lsof uses inode numbers on socket fs to resolve the type of sockets. Files under /proc/net/, such as tcp, udp, unix, etc provides such inode information. Unfortunately bluetooth related protocols don't provide such inode information. This patch series introduces /proc/net files for the protocols. This patch against af_bluetooth.c provides facility to the implementation of protocols. This patch extends bt_sock_list and introduces two exported function bt_procfs_init, bt_procfs_cleanup. The type bt_sock_list is already used in some of implementation of protocols. bt_procfs_init prepare seq_operations which converts protocol own bt_sock_list data to protocol own proc entry when the entry is accessed. What I, lsof user, need is just inode number of bluetooth socket. However, people may want more information. The bt_procfs_init takes a function pointer for customizing the show handler of seq_operations. In v4 patch, __acquires and __releases attributes are added to suppress sparse warning. Suggested by Andrei Emeltchenko. In v5 patch, linux/proc_fs.h is included to use PDE. Build error is reported by Fengguang Wu. Signed-off-by: Masatake YAMATO <yamato@redhat.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Diffstat (limited to 'include/net/bluetooth/bluetooth.h')
-rw-r--r--include/net/bluetooth/bluetooth.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index 565d4bee1e49..ede036977ae8 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -27,6 +27,7 @@
#include <linux/poll.h>
#include <net/sock.h>
+#include <linux/seq_file.h>
#ifndef AF_BLUETOOTH
#define AF_BLUETOOTH 31
@@ -202,6 +203,10 @@ enum {
struct bt_sock_list {
struct hlist_head head;
rwlock_t lock;
+#ifdef CONFIG_PROC_FS
+ struct file_operations fops;
+ int (* custom_seq_show)(struct seq_file *, void *);
+#endif
};
int bt_sock_register(int proto, const struct net_proto_family *ops);
@@ -292,6 +297,11 @@ extern void hci_sock_cleanup(void);
extern int bt_sysfs_init(void);
extern void bt_sysfs_cleanup(void);
+extern int bt_procfs_init(struct module* module, struct net *net, const char *name,
+ struct bt_sock_list* sk_list,
+ int (* seq_show)(struct seq_file *, void *));
+extern void bt_procfs_cleanup(struct net *net, const char *name);
+
extern struct dentry *bt_debugfs;
int l2cap_init(void);