is there a C func that can check kernel config file?

[Zhouping Liu]

Hello,

As subject, as we know we can check the kernel config file through reading
'/usr/src/kernels/`uname -r`/.config' (fedora distro), it's apparently to
find out which config is open/close. but if I'd like do this in C program,
how to do that, is there interface/func in some header file?

Thanks,
Zhouping
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