[tor-commits] [tor/master] Fix another seccomp2 issue

[nickm at torproject.org]

commit 59fa0c2d996621af5c6990534fe9a07864882975
Author: Nick Mathewson <nickm at torproject.org>
Date:   Mon Jun 15 10:13:11 2015 -0400

    Fix another seccomp2 issue
    
    Allow pipe() and pipe2() syscalls; we need these when eventfd2()
    support is missing. Fixes bug 16363; bugfix on 0.2.6.3-alpha.  Patch
    from "teor".
---
 changes/bug16363     |    4 ++++
 src/common/sandbox.c |    8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/changes/bug16363 b/changes/bug16363
new file mode 100644
index 0000000..1a6f8c6
--- /dev/null
+++ b/changes/bug16363
@@ -0,0 +1,4 @@
+  o Minor bugfixes (Linux seccomp2 sandbox):
+    - Allow pipe() and pipe2() syscalls; we need these when eventfd2()
+      support is missing. Fixes bug 16363; bugfix on 0.2.6.3-alpha.
+      Patch from "teor".
diff --git a/src/common/sandbox.c b/src/common/sandbox.c
index cdb4521..161eab7 100644
--- a/src/common/sandbox.c
+++ b/src/common/sandbox.c
@@ -129,7 +129,15 @@ static int filter_nopar_gen[] = {
     SCMP_SYS(clone),
     SCMP_SYS(epoll_create),
     SCMP_SYS(epoll_wait),
+#ifdef HAVE_EVENTFD
     SCMP_SYS(eventfd2),
+#endif
+#ifdef HAVE_PIPE2
+    SCMP_SYS(pipe2),
+#endif
+#ifdef HAVE_PIPE
+    SCMP_SYS(pipe),
+#endif
     SCMP_SYS(fcntl),
     SCMP_SYS(fstat),
 #ifdef __NR_fstat64