#ifdef __cplusplus extern "C" { #endif // This is used by libc++ as an efficient way to get high-quality random data // (more efficiently than via the filesystem using /dev/urandom). // Upstream musl added support for this, so we can switch to that, but it isn't // where libc++ looks for it (which is here and not unistd.h), and it uses a // syscall which is unnecessary indirection for us. int getentropy(void *buffer, size_t length); #include_next #ifdef __cplusplus } #endif