Prevent loading libffmpegsumo.so to python (autotests) process.

This is needed for ASAN environment because libffmpegsumo.so, being
built with ASAN support, fails to load to python process (which is not
ASAN-ed currently). At the same time it loads file to chrome or to
gtest processes (like content_unittests) because they do have ASAN
runtime.

FYI: Alternative approach (https://chromiumcodereview.appspot.com/10692190/)
was skipped because it disallowed ASAN to test libffmpegsumo.so.

BUG=chromium-os:32259
TESTS=unit


Review URL: https://chromiumcodereview.appspot.com/10786038

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@148183 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 24 insertions, 0 deletions

diff --git a/chrome/test/base/chrome_test_suite.cc b/chrome/test/base/chrome_test_suite.cc
index 5ef7802..72b1fba 100644
--- a/chrome/test/base/chrome_test_suite.cc
+++ b/chrome/test/base/chrome_test_suite.cc
@@ -4,6 +4,11 @@
 
 #include "chrome/test/base/chrome_test_suite.h"
 
+#if defined(OS_CHROMEOS)
+#include <stdio.h>
+#include <unistd.h>
+#endif
+
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/memory/ref_counted.h"
@@ -48,6 +53,19 @@ void RemoveSharedMemoryFile(const std::string& filename) {
 #endif
 }
 
+bool IsCrosPythonProcess() {
+#if defined(OS_CHROMEOS)
+  char buf[80];
+  int num_read = readlink("/proc/self/exe", buf, sizeof(buf) - 1);
+  if (num_read == -1)
+    return false;
+  buf[num_read] = 0;
+  const char kPythonPrefix[] = "/python";
+  return !strncmp(strrchr(buf, '/'), kPythonPrefix, sizeof(kPythonPrefix) - 1);
+#endif  // defined(OS_CHROMEOS)
+  return false;
+}
+
 // In many cases it may be not obvious that a test makes a real DNS lookup.
 // We generally don't want to rely on external DNS servers for our tests,
 // so this host resolver procedure catches external queries and returns a failed
@@ -171,6 +189,12 @@ void ChromeTestSuite::Initialize() {
     PathService::Override(base::DIR_MODULE, browser_dir_);
   }
 
+  // Disable external libraries load if we are under python process in
+  // ChromeOS.  That means we are autotest and, if ASAN is used,
+  // external libraries load crashes.
+  content::ContentTestSuiteBase::set_external_libraries_enabled(
+      !IsCrosPythonProcess());
+
   // Initialize after overriding paths as some content paths depend on correct
   // values for DIR_EXE and DIR_MODULE.
   content::ContentTestSuiteBase::Initialize();