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       entropy.c - slstatus - status monitor
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       ---
       entropy.c (617B)
       ---
            1 /* See LICENSE file for copyright and license details. */
            2 #include "../slstatus.h"
            3 #if defined(__linux__)
            4         #include <stdint.h>
            5         #include <stdio.h>
            6 
            7         #include "../util.h"
            8 
            9         #define ENTROPY_AVAIL "/proc/sys/kernel/random/entropy_avail"
           10 
           11         const char *
           12         entropy(const char *unused)
           13         {
           14                 uintmax_t num;
           15 
           16                 if (pscanf(ENTROPY_AVAIL, "%ju", &num) != 1)
           17                         return NULL;
           18 
           19                 return bprintf("%ju", num);
           20         }
           21 #elif defined(__OpenBSD__) | defined(__FreeBSD__)
           22         const char *
           23         entropy(const char *unused)
           24         {
           25                 // https://www.unicode.org/charts/PDF/U2200.pdf
           26                 /* Unicode Character 'INFINITY' (U+221E) */
           27                 return "\u221E";
           28         }
           29 #endif