Research on "_sceAppMgrGetPfsDrive" - Error code 0x80800009

[OperationNT]

Hello everybody,

I am trying to find how the undocumented function "_sceAppMgrGetPfsDrive" works (NID: 0x8AF17416, address: 0x46B208D4) because I suspect it to allow reading PFS protected directories.
My first test consists into finding out how many arguments the function requires. So I wrote the following code:

Code: Select all

    int test = _sceAppMgrGetPfsDrive();
    printf("Call with 0 argument: 0x%X\n", test);
    
    test = _sceAppMgrGetPfsDrive(0);
    printf("Call with 1 argument: 0x%X\n", test);
    
    test = _sceAppMgrGetPfsDrive(0, 0);
    printf("Call with 2 arguments: 0x%X\n", test);

    test = _sceAppMgrGetPfsDrive(0, 0, 0);
    printf("Call with 3 arguments: 0x%X\n", test);
    
    test = _sceAppMgrGetPfsDrive(0, 0, 0, 0);
    printf("Call with 4 arguments: 0x%X\n", test);

I get the following result from this program:

2016-08-25-211937.jpg (43.79 KiB) Viewed 1273 times

I found the first error code signification in VitaSDK:

Code: Select all

SCE_KERNEL_ERROR_INVALID_MEMORY_ACCESS	= 0x80022005

So I assume that the method requires at least 2 arguments. However, I cannot found anywhere the signification of he other code "0x80800009".

Is there a place where I can dind this code signification?

Thank you for your help!

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[asuka]

Want to know which module does this api locate?

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[OperationNT]

I assume, due to the function name, that it should be located in "SceAppMgr". This is why I choose NID 0x8AF17416.

I already arguments other than 0 and I always end up with 0x80022005 error