// Add the c capability to the permitted and inheritable capability mask,
			// otherwise we will not be able to add it to the ambient capability mask.
			caps.data[capToIndex(c)].permitted |= capToMask(c)
			caps.data[capToIndex(c)].inheritable |= capToMask(c)
		}

		if _, _, err1 = RawSyscall(SYS_CAPSET, uintptr(unsafe.Pointer(&caps.hdr)), uintptr(unsafe.Pointer(&caps.data[0])), 0); err1 != 0 {
			goto childerror
		}

	var c caps
	c.hdr.version = _LINUX_CAPABILITY_VERSION_3

	_, _, err := RawSyscall(SYS_CAPGET, uintptr(unsafe.Pointer(&c.hdr)), uintptr(unsafe.Pointer(&c.data[0])), 0)

	return err == 0 && c.data[0].effective&capToMask(_CAP_DAC_OVERRIDE) != 0
}

//sys	faccessat(dirfd int, path string, mode uint32) (err error)
//sys	faccessat2(dirfd int, path string, mode uint32, flags int) (err error) = _SYS_faccessat2