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Date:   Mon, 14 Aug 2017 00:16:40 -0700
From:   <fupan.li@...driver.com>
To:     <marcel@...tmann.org>, <gustavo@...ovan.org>,
        <johan.hedberg@...il.com>
CC:     <linux-bluetooth@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] net/bluetooth: make bluetooth socket can be created in net namespace

From: Fupan Li <fupan.li@...driver.com>

By now kernel only supported creating bluetooth socket in init_net
net namespace, which made bluetooth device cannot be accessed in
containers, this patch made bluetooth socket can be created in
net namespaces to fix this issue.

Signed-off-by: Fupan Li <fupan.li@...driver.com>
---
 net/bluetooth/af_bluetooth.c | 2 +-
 net/bluetooth/bnep/sock.c    | 4 ++--
 net/bluetooth/cmtp/sock.c    | 4 ++--
 net/bluetooth/hci_sock.c     | 4 ++--
 net/bluetooth/hidp/sock.c    | 4 ++--
 net/bluetooth/l2cap_sock.c   | 4 ++--
 net/bluetooth/rfcomm/core.c  | 2 +-
 net/bluetooth/rfcomm/sock.c  | 4 ++--
 net/bluetooth/sco.c          | 4 ++--
 9 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 91e3ba280706..eec5ac17faee 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -113,7 +113,7 @@ static int bt_sock_create(struct net *net, struct socket *sock, int proto,
 {
 	int err;
 
-	if (net != &init_net)
+	if (!net_eq(net, current->nsproxy->net_ns)) 
 		return -EAFNOSUPPORT;
 
 	if (proto < 0 || proto >= BT_MAX_PROTO)
diff --git a/net/bluetooth/bnep/sock.c b/net/bluetooth/bnep/sock.c
index b5116fa9835e..742b8626ebcd 100644
--- a/net/bluetooth/bnep/sock.c
+++ b/net/bluetooth/bnep/sock.c
@@ -241,7 +241,7 @@ int __init bnep_sock_init(void)
 		goto error;
 	}
 
-	err = bt_procfs_init(&init_net, "bnep", &bnep_sk_list, NULL);
+	err = bt_procfs_init(current->nsproxy->net_ns, "bnep", &bnep_sk_list, NULL);
 	if (err < 0) {
 		BT_ERR("Failed to create BNEP proc file");
 		bt_sock_unregister(BTPROTO_BNEP);
@@ -259,7 +259,7 @@ int __init bnep_sock_init(void)
 
 void __exit bnep_sock_cleanup(void)
 {
-	bt_procfs_cleanup(&init_net, "bnep");
+	bt_procfs_cleanup(current->nsproxy->net_ns, "bnep");
 	bt_sock_unregister(BTPROTO_BNEP);
 	proto_unregister(&bnep_proto);
 }
diff --git a/net/bluetooth/cmtp/sock.c b/net/bluetooth/cmtp/sock.c
index ce86a7bae844..d3d608489219 100644
--- a/net/bluetooth/cmtp/sock.c
+++ b/net/bluetooth/cmtp/sock.c
@@ -245,7 +245,7 @@ int cmtp_init_sockets(void)
 		goto error;
 	}
 
-	err = bt_procfs_init(&init_net, "cmtp", &cmtp_sk_list, NULL);
+	err = bt_procfs_init(current->nsproxy->net_ns, "cmtp", &cmtp_sk_list, NULL);
 	if (err < 0) {
 		BT_ERR("Failed to create CMTP proc file");
 		bt_sock_unregister(BTPROTO_HIDP);
@@ -263,7 +263,7 @@ int cmtp_init_sockets(void)
 
 void cmtp_cleanup_sockets(void)
 {
-	bt_procfs_cleanup(&init_net, "cmtp");
+	bt_procfs_cleanup(current->nsproxy->net_ns, "cmtp");
 	bt_sock_unregister(BTPROTO_CMTP);
 	proto_unregister(&cmtp_proto);
 }
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 65d734c165bd..549c6c1f273c 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -2038,7 +2038,7 @@ int __init hci_sock_init(void)
 		goto error;
 	}
 
-	err = bt_procfs_init(&init_net, "hci", &hci_sk_list, NULL);
+	err = bt_procfs_init(current->nsproxy->net_ns, "hci", &hci_sk_list, NULL);
 	if (err < 0) {
 		BT_ERR("Failed to create HCI proc file");
 		bt_sock_unregister(BTPROTO_HCI);
@@ -2056,7 +2056,7 @@ int __init hci_sock_init(void)
 
 void hci_sock_cleanup(void)
 {
-	bt_procfs_cleanup(&init_net, "hci");
+	bt_procfs_cleanup(current->nsproxy->net_ns, "hci");
 	bt_sock_unregister(BTPROTO_HCI);
 	proto_unregister(&hci_sk_proto);
 }
diff --git a/net/bluetooth/hidp/sock.c b/net/bluetooth/hidp/sock.c
index 008ba439bd62..19d4e9a40905 100644
--- a/net/bluetooth/hidp/sock.c
+++ b/net/bluetooth/hidp/sock.c
@@ -275,7 +275,7 @@ int __init hidp_init_sockets(void)
 		goto error;
 	}
 
-	err = bt_procfs_init(&init_net, "hidp", &hidp_sk_list, NULL);
+	err = bt_procfs_init(current->nsproxy->net_ns, "hidp", &hidp_sk_list, NULL);
 	if (err < 0) {
 		BT_ERR("Failed to create HIDP proc file");
 		bt_sock_unregister(BTPROTO_HIDP);
@@ -293,7 +293,7 @@ int __init hidp_init_sockets(void)
 
 void __exit hidp_cleanup_sockets(void)
 {
-	bt_procfs_cleanup(&init_net, "hidp");
+	bt_procfs_cleanup(current->nsproxy->net_ns, "hidp");
 	bt_sock_unregister(BTPROTO_HIDP);
 	proto_unregister(&hidp_proto);
 }
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 67a8642f57ea..404bb1046c9c 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -1685,7 +1685,7 @@ int __init l2cap_init_sockets(void)
 		goto error;
 	}
 
-	err = bt_procfs_init(&init_net, "l2cap", &l2cap_sk_list,
+	err = bt_procfs_init(current->nsproxy->net_ns, "l2cap", &l2cap_sk_list,
 			     NULL);
 	if (err < 0) {
 		BT_ERR("Failed to create L2CAP proc file");
@@ -1704,7 +1704,7 @@ int __init l2cap_init_sockets(void)
 
 void l2cap_cleanup_sockets(void)
 {
-	bt_procfs_cleanup(&init_net, "l2cap");
+	bt_procfs_cleanup(current->nsproxy->net_ns, "l2cap");
 	bt_sock_unregister(BTPROTO_L2CAP);
 	proto_unregister(&l2cap_proto);
 }
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 4a0b41d75c84..b02e6203bb9a 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -200,7 +200,7 @@ static int rfcomm_l2sock_create(struct socket **sock)
 
 	BT_DBG("");
 
-	err = sock_create_kern(&init_net, PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP, sock);
+	err = sock_create_kern(current->nsproxy->net_ns, PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP, sock);
 	if (!err) {
 		struct sock *sk = (*sock)->sk;
 		sk->sk_data_ready   = rfcomm_l2data_ready;
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index 1aaccf637479..780146c642b0 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -1076,7 +1076,7 @@ int __init rfcomm_init_sockets(void)
 		goto error;
 	}
 
-	err = bt_procfs_init(&init_net, "rfcomm", &rfcomm_sk_list, NULL);
+	err = bt_procfs_init(current->nsproxy->net_ns, "rfcomm", &rfcomm_sk_list, NULL);
 	if (err < 0) {
 		BT_ERR("Failed to create RFCOMM proc file");
 		bt_sock_unregister(BTPROTO_RFCOMM);
@@ -1101,7 +1101,7 @@ int __init rfcomm_init_sockets(void)
 
 void __exit rfcomm_cleanup_sockets(void)
 {
-	bt_procfs_cleanup(&init_net, "rfcomm");
+	bt_procfs_cleanup(current->nsproxy->net_ns, "rfcomm");
 
 	debugfs_remove(rfcomm_sock_debugfs);
 
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 795e920a3281..0c9dcc2a6009 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -1229,7 +1229,7 @@ int __init sco_init(void)
 		goto error;
 	}
 
-	err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL);
+	err = bt_procfs_init(current->nsproxy->net_ns, "sco", &sco_sk_list, NULL);
 	if (err < 0) {
 		BT_ERR("Failed to create SCO proc file");
 		bt_sock_unregister(BTPROTO_SCO);
@@ -1255,7 +1255,7 @@ int __init sco_init(void)
 
 void sco_exit(void)
 {
-	bt_procfs_cleanup(&init_net, "sco");
+	bt_procfs_cleanup(current->nsproxy->net_ns, "sco");	
 
 	debugfs_remove(sco_debugfs);
 
-- 
2.11.0

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