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slstatus/components/entropy.c

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/* See LICENSE file for copyright and license details. */
#include "../slstatus.h"
#if defined(__linux__)
#include <stdint.h>
#include <stdio.h>
#include "../util.h"
#define ENTROPY_AVAIL "/proc/sys/kernel/random/entropy_avail"
const char *
entropy(const char *unused)
{
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uintmax_t num;
if (pscanf(ENTROPY_AVAIL, "%ju", &num) != 1)
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return NULL;
return bprintf("%ju", num);
}
#elif defined(__OpenBSD__) | defined(__FreeBSD__)
const char *
entropy(const char *unused)
{
// https://www.unicode.org/charts/PDF/U2200.pdf
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/* Unicode Character 'INFINITY' (U+221E) */
return "\u221E";
}
#endif