Add 64-bit support to browser blacklisting

chrome_elf/blacklist/blacklist_interceptions.cc

Index: chrome_elf/blacklist/blacklist_interceptions.cc
diff --git a/chrome_elf/blacklist/blacklist_interceptions.cc b/chrome_elf/blacklist/blacklist_interceptions.cc
index d0f64ea3721c0da47c368529ef6c53d254f12b60..5872a1f5a88c97ed43ce80bfc6636873ddfaaccb 100644
--- a/chrome_elf/blacklist/blacklist_interceptions.cc
+++ b/chrome_elf/blacklist/blacklist_interceptions.cc
@@ -169,6 +169,10 @@ bool IsSameAsCurrentProcess(HANDLE process) {
 }  // namespace
 
 namespace blacklist {
+// Allocate storage for the pointer to the old NtMapViewOfSectionFunction.
+#pragma section(".oldntmap",write,read)
+__declspec(allocate(".oldntmap"))
+NtMapViewOfSectionFunction g_nt_map_view_of_section_func = NULL;

[robertshield, 2014/01/07 18:30:47]

#if defined(_WIN64)?

[csharp, 2014/01/07 20:43:07]

Done.

 
 bool InitializeInterceptImports() {
   g_nt_query_section_func = reinterpret_cast<NtQuerySectionFunction>(
@@ -229,4 +233,13 @@ SANDBOX_INTERCEPT NTSTATUS WINAPI BlNtMapViewOfSection(
   return ret;
 }
 
+NTSTATUS WINAPI BlNtMapViewOfSection64(

[csharp, 2014/01/07 18:02:40]

I had thought about moving this into a 64-bit specific file, but it does so
little it seems best to keep it next to the 32-bit version (since it does all
the real work).

[robertshield, 2014/01/07 18:30:47]

SGTM. Add #ifdefs around it?

[csharp, 2014/01/07 20:43:07]

Done.

+    HANDLE section, HANDLE process, PVOID *base, ULONG_PTR zero_bits,
+    SIZE_T commit_size, PLARGE_INTEGER offset, PSIZE_T view_size,
+    SECTION_INHERIT inherit, ULONG allocation_type, ULONG protect) {
+  return BlNtMapViewOfSection(g_nt_map_view_of_section_func, section, process,
+                              base, zero_bits, commit_size, offset, view_size,
+                              inherit, allocation_type, protect);
+}
+
 }  // namespace blacklist