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Bluetooth: mgmt: Add support for setting the local name 

This patch adds a new set_local_name management command as well as a
local_name_changed management event. With these user space can both
change the local name as well as monitor changes to it by others.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Johan Hedberg 2011-03-16 14:29:37 +02:00 committed by Gustavo F. Padovan
parent dc4fe30b86
commit b312b161ec
4 changed files with 92 additions and 3 deletions
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1
include/net/bluetooth/hci_core.h
View File

@ -767,6 +767,7 @@ int mgmt_user_confirm_reply_complete(u16 index, bdaddr_t *bdaddr, u8 status);
int mgmt_user_confirm_neg_reply_complete(u16 index, bdaddr_t *bdaddr,
u8 status);
int mgmt_auth_failed(u16 index, bdaddr_t *bdaddr, u8 status);
int mgmt_set_local_name_complete(u16 index, u8 *name, u8 status);
/* HCI info for socket */
#define hci_pi(sk) ((struct hci_pinfo *) sk)

10
include/net/bluetooth/mgmt.h
View File

@ -172,6 +172,11 @@ struct mgmt_rp_user_confirm_reply {
#define MGMT_OP_USER_CONFIRM_NEG_REPLY 0x0016
#define MGMT_OP_SET_LOCAL_NAME 0x0017
struct mgmt_cp_set_local_name {
__u8 name[MGMT_MAX_NAME_LENGTH];
} __packed;
#define MGMT_EV_CMD_COMPLETE 0x0001
struct mgmt_ev_cmd_complete {
__le16 opcode;
@ -239,3 +244,8 @@ struct mgmt_ev_auth_failed {
bdaddr_t bdaddr;
__u8 status;
} __packed;
#define MGMT_EV_LOCAL_NAME_CHANGED 0x0011
struct mgmt_ev_local_name_changed {
__u8 name[MGMT_MAX_NAME_LENGTH];
} __packed;

9
net/bluetooth/hci_event.c
View File

@ -193,13 +193,16 @@ static void hci_cc_write_local_name(struct hci_dev *hdev, struct sk_buff *skb)
BT_DBG("%s status 0x%x", hdev->name, status);
if (status)
return;
sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
if (!sent)
return;
if (test_bit(HCI_MGMT, &hdev->flags))
mgmt_set_local_name_complete(hdev->id, sent, status);
if (status)
return;
memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
}

75
net/bluetooth/mgmt.c
View File

@ -1256,6 +1256,45 @@ failed:
return err;
}
static int set_local_name(struct sock *sk, u16 index, unsigned char *data,
u16 len)
{
struct mgmt_cp_set_local_name *mgmt_cp = (void *) data;
struct hci_cp_write_local_name hci_cp;
struct hci_dev *hdev;
struct pending_cmd *cmd;
int err;
BT_DBG("");
if (len != sizeof(*mgmt_cp))
return cmd_status(sk, index, MGMT_OP_SET_LOCAL_NAME, EINVAL);
hdev = hci_dev_get(index);
if (!hdev)
return cmd_status(sk, index, MGMT_OP_SET_LOCAL_NAME, ENODEV);
hci_dev_lock_bh(hdev);
cmd = mgmt_pending_add(sk, MGMT_OP_SET_LOCAL_NAME, index, data, len);
if (!cmd) {
err = -ENOMEM;
goto failed;
}
memcpy(hci_cp.name, mgmt_cp->name, sizeof(hci_cp.name));
err = hci_send_cmd(hdev, HCI_OP_WRITE_LOCAL_NAME, sizeof(hci_cp),
&hci_cp);
if (err < 0)
mgmt_pending_remove(cmd);
failed:
hci_dev_unlock_bh(hdev);
hci_dev_put(hdev);
return err;
}
int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
{
unsigned char *buf;
@ -1351,6 +1390,9 @@ int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
case MGMT_OP_USER_CONFIRM_NEG_REPLY:
err = user_confirm_reply(sk, index, buf + sizeof(*hdr), len, 0);
break;
case MGMT_OP_SET_LOCAL_NAME:
err = set_local_name(sk, index, buf + sizeof(*hdr), len);
break;
default:
BT_DBG("Unknown op %u", opcode);
err = cmd_status(sk, index, opcode, 0x01);
@ -1647,3 +1689,36 @@ int mgmt_auth_failed(u16 index, bdaddr_t *bdaddr, u8 status)
return mgmt_event(MGMT_EV_AUTH_FAILED, index, &ev, sizeof(ev), NULL);
}
int mgmt_set_local_name_complete(u16 index, u8 *name, u8 status)
{
struct pending_cmd *cmd;
struct mgmt_cp_set_local_name ev;
int err;
memset(&ev, 0, sizeof(ev));
memcpy(ev.name, name, HCI_MAX_NAME_LENGTH);
cmd = mgmt_pending_find(MGMT_OP_SET_LOCAL_NAME, index);
if (!cmd)
goto send_event;
if (status) {
err = cmd_status(cmd->sk, index, MGMT_OP_SET_LOCAL_NAME, EIO);
goto failed;
}
err = cmd_complete(cmd->sk, index, MGMT_OP_SET_LOCAL_NAME, &ev,
sizeof(ev));
if (err < 0)
goto failed;
send_event:
err = mgmt_event(MGMT_EV_LOCAL_NAME_CHANGED, index, &ev, sizeof(ev),
cmd ? cmd->sk : NULL);
failed:
if (cmd)
mgmt_pending_remove(cmd);
return err;
}