1 files changed, 20 insertions, 0 deletions
diff --git a/sandbox/src/win_utils.cc b/sandbox/src/win_utils.cc
index bf4936b..8be9ce4 100644
--- a/sandbox/src/win_utils.cc
+++ b/sandbox/src/win_utils.cc
@@ -265,6 +265,26 @@ bool GetPathFromHandle(HANDLE handle, std::wstring* path) {
   return true;
 }
 
+bool WriteProtectedChildMemory(HANDLE child_process, void* address,
+                               const void* buffer, size_t length) {
+  // First, remove the protections.
+  DWORD old_protection;
+  if (!::VirtualProtectEx(child_process, address, length,
+                          PAGE_WRITECOPY, &old_protection))
+    return false;
+
+  SIZE_T written;
+  bool ok = ::WriteProcessMemory(child_process, address, buffer, length,
+                                 &written) && (length == written);
+
+  // Always attempt to restore the original protection.
+  if (!::VirtualProtectEx(child_process, address, length,
+                          old_protection, &old_protection))
+    return false;
+
+  return ok;
+}
+
 };  // namespace sandbox
 
 // TODO(cpu): This is not the final code we want here but we are yet