zig/lib/libc/wasi/libc-bottom-half/sources/getentropy.c
Frank Denis da9c530d99
Update wasi-libc to a00bf321eeeca836ee2a0d2d25aeb8524107b8cc (#13626)
* Update wasi-libc to a00bf321eeeca836ee2a0d2d25aeb8524107b8cc

It includes a port of emscripten's allocator that performs
performs much better than the old one.

Most importantly, it includes the prerequisites to later add
support for POSIX threads.
2022-11-28 19:58:03 +01:00

20 lines
337 B
C
Vendored

#include <errno.h>
#include <unistd.h>
#include <wasi/api.h>
int __getentropy(void *buffer, size_t len) {
if (len > 256) {
errno = EIO;
return -1;
}
int r = __wasi_random_get(buffer, len);
if (r != 0) {
errno = r;
return -1;
}
return 0;
}
weak_alias(__getentropy, getentropy);