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LibUSB (new API):

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- Add a new API function to check the connected
status of the USB handle in the LibUSB v1.0 and
LibUSB v0.1 interfaces.

Approved by:    thompsa (mentor)
This commit is contained in:
hselasky 2010-10-14 20:04:36 +00:00
parent dd8752941f
commit f4157327e6
5 changed files with 39 additions and 0 deletions
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9
lib/libusb/libusb.3
View File

@ -231,6 +231,14 @@ been disconnected and a LIBUSB_ERROR code on failure.
.Pp
.
.Ft int
.Fn libusb_check_connected "libusb_device_handle *devh"
Test if USB device is still connected. Returns 0 on success,
LIBUSB_ERROR_NO_DEVICE if has been disconnected and a LIBUSB_ERROR
code on failure.
.
.Pp
.
.Ft int
.Fn libusb_kernel_driver_active "libusb_device_handle *devh" "int interface"
Determine if a driver is active on a interface. Returns 0 if no kernel driver
is active, returns 1 if a kernel driver is active, returns LIBUSB_ERROR_NO_DEVICE
@ -488,6 +496,7 @@ The library is also compliant with LibUSB version 0.1.12.
.Fn usb_find_devices
.Fn usb_device
.Fn usb_get_busses
.Fn usb_check_connected
.
.Sh SEE ALSO
.Xr libusb20 3 ,

1
lib/libusb/libusb.h
View File

@ -316,6 +316,7 @@ int libusb_set_configuration(libusb_device_handle * devh, int configuration);
int libusb_claim_interface(libusb_device_handle * devh, int interface_number);
int libusb_release_interface(libusb_device_handle * devh, int interface_number);
int libusb_reset_device(libusb_device_handle * devh);
int libusb_check_connected(libusb_device_handle * devh);
int libusb_kernel_driver_active(libusb_device_handle * devh, int interface);
int libusb_detach_kernel_driver(libusb_device_handle * devh, int interface);
int libusb_attach_kernel_driver(libusb_device_handle * devh, int interface);

15
lib/libusb/libusb10.c
View File

@ -662,6 +662,21 @@ libusb_reset_device(struct libusb20_device *pdev)
return (err ? LIBUSB_ERROR_OTHER : 0);
}
int
libusb_check_connected(struct libusb20_device *pdev)
{
libusb_device *dev;
int err;
dev = libusb_get_device(pdev);
if (dev == NULL)
return (LIBUSB_ERROR_INVALID_PARAM);
err = libusb20_dev_check_connected(pdev);
return (err ? LIBUSB_ERROR_NO_DEVICE : 0);
}
int
libusb_kernel_driver_active(struct libusb20_device *pdev, int interface)
{

13
lib/libusb/libusb20_compat01.c
View File

@ -795,6 +795,19 @@ usb_reset(usb_dev_handle * dev)
return (usb_close(dev));
}
int
usb_check_connected(usb_dev_handle * dev)
{
int err;
err = libusb20_dev_check_connected((void *)dev);
if (err)
return (-1);
return (0);
}
const char *
usb_strerror(void)
{

1
lib/libusb/usb.h
View File

@ -291,6 +291,7 @@ int usb_set_altinterface(usb_dev_handle * dev, int alternate);
int usb_resetep(usb_dev_handle * dev, unsigned int ep);
int usb_clear_halt(usb_dev_handle * dev, unsigned int ep);
int usb_reset(usb_dev_handle * dev);
int usb_check_connected(usb_dev_handle * dev);
const char *usb_strerror(void);
void usb_init(void);
void usb_set_debug(int level);