Bug 1072024 - Disable sandbox during gtests on linux - r=ted

testing/gtest/rungtests.py

@@ -74,6 +74,14 @@ class GTests(object):
         env["MOZ_RUN_GTEST"] = "1"
         # Normally we run with GTest default output, override this to use the TBPL test format.
         env["MOZ_TBPL_PARSER"] = "1"
+
+        if not mozinfo.has_sandbox:
+          # Bug 1082193 - This is horrible. Our linux build boxes run CentOS 6,
+          # which is too old to support sandboxing. Disable sandbox for gtests
+          # on machines which don't support sandboxing until they can be
+          # upgraded, or gtests are run on test machines instead.
+          env["MOZ_DISABLE_GMP_SANDBOX"] = "1"
+
         return env
 
     def build_environment(self):

testing/mozbase/mozinfo/mozinfo/mozinfo.py

@@ -8,6 +8,8 @@
 # linux) to the information; I certainly wouldn't want anyone parsing this
 # information and having behaviour depend on it
 
+import ctypes
+import errno
 import json
 import os
 import platform
@@ -32,7 +34,8 @@ info = {'os': unknown,
         'processor': unknown,
         'version': unknown,
         'os_version': unknown,
-        'bits': unknown }
+        'bits': unknown,
+        'has_sandbox': unknown }
 (system, node, release, version, machine, processor) = platform.uname()
 (bits, linkage) = platform.architecture()
 
@@ -93,6 +96,14 @@ info.update({'processor': processor,
              'bits': int(bits),
             })
 
+if info['os'] == 'linux':
+    PR_SET_SECCOMP = 22
+    SECCOMP_MODE_FILTER = 2
+    ctypes.CDLL("libc.so.6", use_errno=True).prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, 0)
+    info['has_sandbox'] = ctypes.get_errno() == errno.EFAULT
+else:
+    info['has_sandbox'] = True
+
 # standard value of choices, for easy inspection
 choices = {'os': ['linux', 'bsd', 'win', 'mac', 'unix'],
            'bits': [32, 64],