AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

Bluetooth: Check for valid HCI UART driver flags

Browse Source 
Providing unknown or invalid flags to the HCI UART driver should
result in an error. So check which flags are valid and otherwise
return an error.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2014-07-11 07:12:57 +02:00 committed by Johan Hedberg
parent 068d69e5bb
commit bb72bd68fd
1 changed files with 18 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/bluetooth/hci_ldisc.c
View File

@ -477,6 +477,21 @@ static int hci_uart_set_proto(struct hci_uart *hu, int id)
return 0; return 0;
} }
static int hci_uart_set_flags(struct hci_uart *hu, unsigned long flags)
{
unsigned long valid_flags = BIT(HCI_UART_RAW_DEVICE) |
BIT(HCI_UART_RESET_ON_INIT) |
BIT(HCI_UART_CREATE_AMP) |
BIT(HCI_UART_INIT_PENDING);
if ((flags & ~valid_flags))
return -EINVAL;
hu->hdev_flags = flags;
return 0;
}
/* hci_uart_tty_ioctl() /* hci_uart_tty_ioctl()
* *
* Process IOCTL system call for the tty device. * Process IOCTL system call for the tty device.
@ -527,7 +542,9 @@ static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file * file,
case HCIUARTSETFLAGS: case HCIUARTSETFLAGS:
if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) if (test_bit(HCI_UART_PROTO_SET, &hu->flags))
return -EBUSY; return -EBUSY;
hu->hdev_flags = arg; err = hci_uart_set_flags(hu, arg);
if (err)
return err;
break; break;
case HCIUARTGETFLAGS: case HCIUARTGETFLAGS: