commit	955a586c63c4f99fb734e44221db63f5b2ca25a9
author	Matthew Denton <mpdenton@chromium.org>	Fri Mar 12 00:24:39 2021
committer	Matthew Denton <mpdenton@chromium.org>	Fri Mar 12 00:24:39 2021
tree	1a7de74e5c55397bc6d27761a1bb0dd2339e2ba5
parent	ada8253c243be1bf713ce42e2f9eba1360ba528d
Linux sandbox: support futex_time64 on 32-bit platforms

This updates futex-related syscall sets to include futex_time64, which
is a version of the futex syscall which uses 64 bit time on 32-bit
systems, to prepare for the Y2038 problem.

Change-Id: Ie933d9fec221233bf837f00c08eb7daee204081d
diff --git a/sandbox/linux/seccomp-bpf-helpers/baseline_policy.cc b/sandbox/linux/seccomp-bpf-helpers/baseline_policy.cc
index ab0566b..2403ea3 100644
--- a/sandbox/linux/seccomp-bpf-helpers/baseline_policy.cc
+++ b/sandbox/linux/seccomp-bpf-helpers/baseline_policy.cc
@@ -193,7 +193,11 @@
   }
 #endif
 
-  if (sysno == __NR_futex)
+  if (sysno == __NR_futex
+#if defined(__NR_futex_time64)
+      || sysno == __NR_futex_time64
+#endif
+  )
     return RestrictFutex();
 
   if (sysno == __NR_set_robust_list)
diff --git a/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc b/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
index a76fd30..0330aeab 100644
--- a/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
+++ b/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
@@ -423,6 +423,9 @@
     case __NR_get_robust_list:
     case __NR_set_robust_list:
     case __NR_futex:
+#if defined(__NR_futex_time64)
+    case __NR_futex_time64:
+#endif
     default:
       return false;
   }