Not able to open job object using OpenJobObjectA

Question

I am writing a program that will open a job object present in \BaseNamedObjects namespace using OpenJobObjectA. Below is snippet of code:

 hJob = OpenJobObjectA(JOB_OBJECT_QUERY, FALSE, "\\BaseNamedObjects\\SAC10680");
 if (hJob == NULL) {
     fprintf(stderr, "Failed to open job object. Error code: %d\n", GetLastError());
     return 1;
 }

Now, even though the job object is present(which I verify using winobj) I am not able to open the object. And getting below error:

Failed to open job object. Error code: 161

I know error 161 means path is invalid. But that's not true!!

The code should open the job object.

Answer 1

According to the Doc:OpenJobObjectA function

The name can have a "Global" or "Local" prefix to explicitly open the object in the global or session namespace. The remainder of the name can contain any character except the backslash character ().

The driver creates a named event object in the global \BaseNamedObjects object directory. To access a kernel-mode event from user-mode, use the name Global\\Xxx.

I agree with RbMm, you should try to use Global\\SAC10680.