Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc / deps / grpc / third_party / boringssl / crypto / rand_extra / fuchsia.c

diff --git a/legacy-libs/grpc/deps/grpc/third_party/boringssl/crypto/rand_extra/fuchsia.c b/legacy-libs/grpc/deps/grpc/third_party/boringssl/crypto/rand_extra/fuchsia.c
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+++ b/legacy-libs/grpc/deps/grpc/third_party/boringssl/crypto/rand_extra/fuchsia.c
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+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/rand.h>
+
+#if defined(OPENSSL_FUCHSIA) && !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+
+#include <limits.h>
+#include <stdlib.h>
+
+#include <zircon/syscalls.h>
+
+#include "../fipsmodule/rand/internal.h"
+
+void CRYPTO_sysrand(uint8_t *out, size_t requested) {
+  while (requested > 0) {
+    size_t output_bytes_this_pass = ZX_CPRNG_DRAW_MAX_LEN;
+    if (requested < output_bytes_this_pass) {
+      output_bytes_this_pass = requested;
+    }
+    size_t bytes_drawn;
+    zx_status_t status =
+        zx_cprng_draw(out, output_bytes_this_pass, &bytes_drawn);
+    if (status != ZX_OK) {
+      abort();
+    }
+    requested -= bytes_drawn;
+    out += bytes_drawn;
+  }
+}
+
+#endif  // OPENSSL_FUCHSIA && !BORINGSSL_UNSAFE_DETERMINISTIC_MODE