Hello,
I have a usb data aquisition device interfaced by mass storage protocol. I open it like:
hEcgDrive=CreateFile("\\\\.\\g:",
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_NO_BUFFERING |
FILE_FLAG_WRITE_THROUGH | FILE_FLAG_OVERLAPPED,
NULL);
for communication I use
DeviceIoControl(hEcgDrive,
IOCTL_SCSI_PASS_THROUGH_DIRECT,
....
with a 'custom' scsi operation code as wrapper.
On Wine-1.1.30. under UHU linux (2.6.23.9-1) the program can open the device only if run as root. If run as plain user, CreateFile gives ERROR_ACCESS_DENIED (5).
I also tried with FILE_ALL_ACCESS, no luck.
I would appreciate any experience shared to solve this access issue!
The device has a basic filesystem with a txt file, so it is mapped under dosdevices, ok.
And an other question:
is it possible to open "\\\\.\\PHYSICALDISK2, this way no filesystem is needed, and the user is not confused with the apperance of a new drive. Under windows I follow the later strategy with success!
Thank you,
Gyula
