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	void getsysctl(const char name, void ptr, size_t len)			void getsysctl(const char name, void ptr, size_t len)
	{			{
	size_t nlen = len;			size_t nlen = len;
	if (sysctlbyname(name, ptr, &nlen, NULL, 0) != 0) {			if (sysctlbyname(name, ptr, &nlen, NULL, 0) != 0) {
	error("sysctl(%s...) failed: %s", name,			error("sysctl(%s...) failed: %s", name,
	strerror(errno));			strerror(errno));
	}			}
	if (nlen != len) {			if (nlen != len) {
	error("sysctl(%s...) expected %lu, got %lu", name,			error("sysctl(%s...) expected %zu, got %zu", name, len, nlen);
	(unsigned long)len, (unsigned long)nlen);
	}			}
	}			}

	/*			/*
	* Read sysctl data with variable size. Try some times (with increasing			* Read sysctl data with variable size. Try some times (with increasing
	* buffers), fail if still too small.			* buffers), fail if still too small.
	* This is needed sysctls with possibly raplidly increasing data sizes,			* This is needed sysctls with possibly raplidly increasing data sizes,
	* but imposes little overhead in the case of constant sizes.			* but imposes little overhead in the case of constant sizes.
	* Returns NULL on error, or a pointer to freshly malloc()'ed memory that holds			* Returns NULL on error, or a pointer to freshly malloc()'ed memory that holds
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