From 4c7840d330eec01aa03289c6a4a0a9c37935d5e4 Mon Sep 17 00:00:00 2001
From: Ryan Macnak <rmacnak@google.com>
Date: Tue, 19 Apr 2022 23:27:17 +0000
Subject: [PATCH] [dart:io] Publish implementations of the VM file callbacks.

TEST=ci
Change-Id: I481b6fe3e7eae02ff7f2c94fa2f60bef0a972b3c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/241685
Reviewed-by: Alexander Aprelev <aam@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
---
 runtime/bin/dart_io_api_impl.cc   | 13 +++++++++++++
 runtime/include/bin/dart_io_api.h |  6 ++++++
 2 files changed, 19 insertions(+)

diff --git a/runtime/bin/dart_io_api_impl.cc b/runtime/bin/dart_io_api_impl.cc
index 8ec2c1de35e..bc0d36893a7 100644
--- a/runtime/bin/dart_io_api_impl.cc
+++ b/runtime/bin/dart_io_api_impl.cc
@@ -57,6 +57,19 @@ void GetIOEmbedderInformation(Dart_EmbedderInformation* info) {
   Process::GetRSSInformation(&(info->max_rss), &(info->current_rss));
 }
 
+void* OpenFile(const char* name, bool write) {
+  return DartUtils::OpenFile(name, write);
+}
+void ReadFile(uint8_t** data, intptr_t* file_len, void* stream) {
+  DartUtils::ReadFile(data, file_len, stream);
+}
+void WriteFile(const void* buffer, intptr_t num_bytes, void* stream) {
+  DartUtils::WriteFile(buffer, num_bytes, stream);
+}
+void CloseFile(void* stream) {
+  DartUtils::CloseFile(stream);
+}
+
 bool GetEntropy(uint8_t* buffer, intptr_t length) {
   return Crypto::GetRandomBytes(length, buffer);
 }
diff --git a/runtime/include/bin/dart_io_api.h b/runtime/include/bin/dart_io_api.h
index e194f7ae98e..cc647976c9d 100644
--- a/runtime/include/bin/dart_io_api.h
+++ b/runtime/include/bin/dart_io_api.h
@@ -41,6 +41,12 @@ void SetExecutableArguments(int script_index, char** argv);
 // Set dart:io implementation specific fields of Dart_EmbedderInformation.
 void GetIOEmbedderInformation(Dart_EmbedderInformation* info);
 
+// Appropriate to assign to Dart_InitializeParams.file_open/read/write/close.
+void* OpenFile(const char* name, bool write);
+void ReadFile(uint8_t** data, intptr_t* file_len, void* stream);
+void WriteFile(const void* buffer, intptr_t num_bytes, void* stream);
+void CloseFile(void* stream);
+
 // Generates 'length' random bytes into 'buffer'. Returns true on success
 // and false on failure. This is appropriate to assign to
 // Dart_InitializeParams.entropy_source.