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package linux
import (
"fmt"
"os"
)
// FindKConfig searches for a kconfig file on the host.
//
// It first reads from /boot/config- of the current running kernel and tries
// /proc/config.gz if nothing was found in /boot.
// If none of the file provide a kconfig, it returns an error.
func FindKConfig() (*os.File, error) {
kernelRelease, err := KernelRelease()
if err != nil {
return nil, fmt.Errorf("cannot get kernel release: %w", err)
}
path := "/boot/config-" + kernelRelease
f, err := os.Open(path)
if err == nil {
return f, nil
}
f, err = os.Open("/proc/config.gz")
if err == nil {
return f, nil
}
return nil, fmt.Errorf("neither %s nor /proc/config.gz provide a kconfig", path)
}
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