errno);
}
}
+#elif defined(HAVE_ARC4RANDOM)
+
+#include <stdlib.h>
+
+/*
+ * According to the MacOS / FreeBSD manpage, this function never fails nor blocks.
+ */
+void getrandom_nonblock(char *out_data, std::size_t size)
+{
+ arc4random_buf(out_data, size);
+}
#else /* defined(__linux__) && defined(SYS_getrandom) && defined(HAVE_SYS_RANDOM_H) */
-__attribute__((noreturn))
-void getrandom_nonblock(char *out_data __attribute__((unused)),
- std::size_t size __attribute__((unused)))
+__attribute__((noreturn)) void getrandom_nonblock(char *out_data __attribute__((unused)),
+ std::size_t size __attribute__((unused)))
{
LTTNG_THROW_RANDOM_PRODUCTION_ERROR("getrandom() is not supported by this platform");
}
{
try {
return lttng::random::produce_true_random_seed();
- } catch (std::exception& e) {
+ } catch (const std::exception& e) {
WARN("%s",
fmt::format(
"Failed to produce a random seed using getrandom(), falling back to pseudo-random device seed generation which will block until its pool is initialized: {}",
* under some containerized environments.
*/
produce_random_seed_from_urandom();
- } catch (std::exception& e) {
+ } catch (const std::exception& e) {
WARN("%s",
fmt::format("Failed to produce a random seed from the urandom device: {}",
e.what())