tor

commit 070eda5a21f580ee00ed64527ade4343b10e0fb6
parent 3370b3cfef62cba8377285d95b232f810edde504
Author: Nick Mathewson <nickm@torproject.org>
Date:   Tue, 20 Mar 2018 08:22:28 -0400

Add the poll() syscall as permitted by the sandbox

Apparently, sometimes getpwnam will call this.

Fixes bug 25513.

Diffstat:
A
changes/feature25313
 | 
4
++++
M
src/common/sandbox.c
 | 
3
++-

2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/changes/feature25313 b/changes/feature25313
@@ -0,0 +1,4 @@
+  o Minor features (sandbox):
+    - Explicitly permit the poll() system call when the Linux seccomp2-based
+      sandbox is enabled: apparently, some versions of libc use poll() when
+      calling getpwnam(). Closes ticket 25313.
diff --git a/src/common/sandbox.c b/src/common/sandbox.c
@@ -247,7 +247,8 @@ static int filter_nopar_gen[] = {
     SCMP_SYS(recvmsg),
     SCMP_SYS(recvfrom),
     SCMP_SYS(sendto),
-    SCMP_SYS(unlink)
+    SCMP_SYS(unlink),
+    SCMP_SYS(poll)
 };
 
 /* These macros help avoid the error where the number of filters we add on a