Switch Linux Auru ports over to POSIX SHM instead of legacy SYSV SHM.

content/common/sandbox_seccomp_bpf_linux.cc

Index: content/common/sandbox_seccomp_bpf_linux.cc
===================================================================
--- content/common/sandbox_seccomp_bpf_linux.cc	(revision 192603)
+++ content/common/sandbox_seccomp_bpf_linux.cc	(working copy)
@@ -1386,7 +1386,7 @@
     case __NR_prlimit64:
       return ErrorCode(EPERM);  // See crbug.com/160157.
     default:
-      // These need further tightening.
+#if defined(TOOLKIT_GTK)

[jln (very slow on Chromium), 2013/04/06 00:22:23]

Please, make an IfUsingToolKitGtk() function above, like we do have for
IsArchitecture* instead of using #ifdef.

The less #ifdefs we have, the better off we are.

 #if defined(__x86_64__) || defined(__arm__)
       if (IsSystemVSharedMemory(sysno))
         return ErrorCode(ErrorCode::ERR_ALLOWED);
@@ -1395,6 +1395,7 @@
       if (IsSystemVIpc(sysno))
         return ErrorCode(ErrorCode::ERR_ALLOWED);
 #endif
+#endif
 
       // Default on the baseline policy.
       return BaselinePolicy(sandbox, sysno);
@@ -1414,7 +1415,7 @@
     case __NR_ioctl:
       return ErrorCode(ENOTTY);  // Flash Access.
     default:
-      // These need further tightening.
+#if defined(TOOLKIT_GTK)

[jln (very slow on Chromium), 2013/04/06 00:22:23]

Same remark here.

 #if defined(__x86_64__) || defined(__arm__)
       if (IsSystemVSharedMemory(sysno))
         return ErrorCode(ErrorCode::ERR_ALLOWED);
@@ -1423,6 +1424,7 @@
       if (IsSystemVIpc(sysno))
         return ErrorCode(ErrorCode::ERR_ALLOWED);
 #endif
+#endif
 
       // Default on the baseline policy.
       return BaselinePolicy(sandbox, sysno);