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| author | Suleyman Farajli <suleyman@farajli.net> | 2024-09-03 21:42:37 +0400 |
|---|---|---|
| committer | Suleyman Farajli <suleyman@farajli.net> | 2024-09-03 21:42:37 +0400 |
| commit | 635d7e40f06085ee1bfedd9b6651fee0fc5dd0af (patch) | |
| tree | 9a9f09a074764b09aa5821ee19ca4374447f4f99 /components/entropy.c | |
initial version
Diffstat (limited to 'components/entropy.c')
| -rw-r--r-- | components/entropy.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/components/entropy.c b/components/entropy.c new file mode 100644 index 0000000..65010b0 --- /dev/null +++ b/components/entropy.c @@ -0,0 +1,29 @@ +/* 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) + { + uintmax_t num; + + if (pscanf(ENTROPY_AVAIL, "%ju", &num) != 1) + 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 + /* Unicode Character 'INFINITY' (U+221E) */ + return "\u221E"; + } +#endif |