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Bluetooth: Add define for the maximum name length on HCI level

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This patch adds a clear define for the maximum device name length in HCI
messages and thereby avoids magic numbers in the code.

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 14:29:35 +02:00 committed by Gustavo F. Padovan
parent f0681a68dd
commit 1f6c6378c5
4 changed files with 11 additions and 9 deletions
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8
include/net/bluetooth/hci.h
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@ -535,15 +535,17 @@ struct hci_cp_delete_stored_link_key {
__u8 delete_all; __u8 delete_all;
} __packed; } __packed;
#define HCI_MAX_NAME_LENGTH 248
#define HCI_OP_WRITE_LOCAL_NAME 0x0c13 #define HCI_OP_WRITE_LOCAL_NAME 0x0c13
struct hci_cp_write_local_name { struct hci_cp_write_local_name {
__u8 name[248]; __u8 name[HCI_MAX_NAME_LENGTH];
} __packed; } __packed;
#define HCI_OP_READ_LOCAL_NAME 0x0c14 #define HCI_OP_READ_LOCAL_NAME 0x0c14
struct hci_rp_read_local_name { struct hci_rp_read_local_name {
__u8 status; __u8 status;
__u8 name[248]; __u8 name[HCI_MAX_NAME_LENGTH];
} __packed; } __packed;
#define HCI_OP_WRITE_CA_TIMEOUT 0x0c16 #define HCI_OP_WRITE_CA_TIMEOUT 0x0c16
@ -745,7 +747,7 @@ struct hci_ev_auth_complete {
struct hci_ev_remote_name { struct hci_ev_remote_name {
__u8 status; __u8 status;
bdaddr_t bdaddr; bdaddr_t bdaddr;
__u8 name[248]; __u8 name[HCI_MAX_NAME_LENGTH];
} __packed; } __packed;
#define HCI_EV_ENCRYPT_CHANGE 0x08 #define HCI_EV_ENCRYPT_CHANGE 0x08

2
include/net/bluetooth/hci_core.h
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@ -94,7 +94,7 @@ struct hci_dev {
__u8 bus; __u8 bus;
__u8 dev_type; __u8 dev_type;
bdaddr_t bdaddr; bdaddr_t bdaddr;
__u8 dev_name[248]; __u8 dev_name[HCI_MAX_NAME_LENGTH];
__u8 dev_class[3]; __u8 dev_class[3];
__u8 major_class; __u8 major_class;
__u8 minor_class; __u8 minor_class;

4
net/bluetooth/hci_event.c
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@ -200,7 +200,7 @@ static void hci_cc_write_local_name(struct hci_dev *hdev, struct sk_buff *skb)
if (!sent) if (!sent)
return; return;
memcpy(hdev->dev_name, sent, 248); memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
} }
static void hci_cc_read_local_name(struct hci_dev *hdev, struct sk_buff *skb) static void hci_cc_read_local_name(struct hci_dev *hdev, struct sk_buff *skb)
@ -212,7 +212,7 @@ static void hci_cc_read_local_name(struct hci_dev *hdev, struct sk_buff *skb)
if (rp->status) if (rp->status)
return; return;
memcpy(hdev->dev_name, rp->name, 248); memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
} }
static void hci_cc_write_auth_enable(struct hci_dev *hdev, struct sk_buff *skb) static void hci_cc_write_auth_enable(struct hci_dev *hdev, struct sk_buff *skb)

6
net/bluetooth/hci_sysfs.c
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@ -216,13 +216,13 @@ static ssize_t show_type(struct device *dev, struct device_attribute *attr, char
static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf) static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf)
{ {
struct hci_dev *hdev = dev_get_drvdata(dev); struct hci_dev *hdev = dev_get_drvdata(dev);
char name[249]; char name[HCI_MAX_NAME_LENGTH + 1];
int i; int i;
for (i = 0; i < 248; i++) for (i = 0; i < HCI_MAX_NAME_LENGTH; i++)
name[i] = hdev->dev_name[i]; name[i] = hdev->dev_name[i];
name[248] = '\0'; name[HCI_MAX_NAME_LENGTH] = '\0';
return sprintf(buf, "%s\n", name); return sprintf(buf, "%s\n", name);
} }