header and android_crash_detail prefix for crash_detail API

Bug: 155462331
Change-Id: Ib1c0ac76d2bd036a6b802b0997d9de8be61dfd2b
diff --git a/libc/platform/bionic/crash_detail_internal.h b/libc/platform/bionic/crash_detail_internal.h
new file mode 100644
index 0000000..d8508a5
--- /dev/null
+++ b/libc/platform/bionic/crash_detail_internal.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <android/crash_detail.h>
+#include <stddef.h>
+#include <sys/cdefs.h>
+
+struct crash_detail_t {
+  const char* name;
+  size_t name_size;
+  const char* data;
+  size_t data_size;
+  crash_detail_t* prev_free;
+};
+
+constexpr auto kNumCrashDetails = 128;
+
+struct crash_detail_page_t {
+  struct crash_detail_page_t* prev;
+  size_t used;
+  struct crash_detail_t crash_details[kNumCrashDetails];
+};