PRB: Specifying Device Name in IoCreateDevice (280308)
The information in this article applies to:
- Microsoft Windows 2000 Driver Development Kit (DDK)
- Microsoft Windows NT 4.0 Driver Development Kit (DDK)
This article was previously published under Q280308 SYMPTOMS
The IoCreateDevice function returns STATUS_OBJECT_PATH_NOT_FOUND, if the DeviceName specified has
instead of:
where "xzy" is the user-defined name.
CAUSE
The system creates a case-sensitive directory object for DeviceObjects.
RESOLUTION
Specify "\Device" instead of "\DEVICE". For example:
#define NT_DEVICE_NAME "\\Device\\Test" /* Correct definition */
#define NT_DEVICE_NAME "\\DEVICE\\Test" /* Wrong definition */
STATUS
This behavior is by design. Please note on Windows XP and above, the object manager has been changed to create objects by default with OBJ_CASE_INSENSITIVE attributes, so you can specify either /Device/xyz or /DEVICE/xyz - both the syntax will work.
| Modification Type: | Minor | Last Reviewed: | 7/21/2004 |
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| Keywords: | kbKMode kbprb KB280308 |
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