NaCl: enable meta-based validation for shared libraries.

chrome/nacl/nacl_validation_query.cc

Index: chrome/nacl/nacl_validation_query.cc
diff --git a/chrome/nacl/nacl_validation_query.cc b/chrome/nacl/nacl_validation_query.cc
index 37d9b7866e51fa0c356e4a4871b1a7f95f926b2e..a9aa63bb81bc01538ae27fc4f2ed01a38e21e1a0 100644
--- a/chrome/nacl/nacl_validation_query.cc
+++ b/chrome/nacl/nacl_validation_query.cc
@@ -29,6 +29,11 @@ NaClValidationQuery* NaClValidationQueryContext::CreateQuery() {
   return query;
 }
 
+bool NaClValidationQueryContext::ResolveFileNonce(uint64 nonce, int32* fd,
+                                                  std::string* path) {
+  return db_->ResolveFileNonce(nonce, fd, path);
+}
+
 NaClValidationQuery::NaClValidationQuery(NaClValidationDB* db,
                                          const std::string& profile_key)
     : state_(READY),
@@ -127,6 +132,23 @@ static void DestroyQuery(void* query) {
   delete static_cast<NaClValidationQuery*>(query);
 }
 
+static int ResolveFileNonce(void* handle, uint64 nonce, int32* fd,
+                            char** file_path, uint32 *file_path_length) {
+  std::string path;
+  *file_path = NULL;
+  *file_path_length = 0;
+  bool ok = static_cast<NaClValidationQueryContext*>(handle)->
+      ResolveFileNonce(nonce, fd, &path);
+  if (ok) {
+    *file_path = (char *) malloc(path.length() + 1);
+    CHECK(*file_path);
+    memcpy(*file_path, path.data(), path.length());
+    (*file_path)[path.length()] = 0;
+    *file_path_length = (uint32) path.length();
+  }
+  return ok;
+}
+
 struct NaClValidationCache* CreateValidationCache(
     NaClValidationDB* db, const std::string& profile_key,
     const std::string& nacl_version) {
@@ -140,5 +162,6 @@ struct NaClValidationCache* CreateValidationCache(
   cache->QueryKnownToValidate = QueryKnownToValidate;
   cache->SetKnownToValidate = SetKnownToValidate;
   cache->DestroyQuery = DestroyQuery;
+  cache->ResolveFileNonce = ResolveFileNonce;
   return cache;
 }