In order to use the OpenSSL-ibmpkcs11 engine it is needed to allow flock
and ipc calls, because this engine calls OpenCryptoki (a PKCS#11
implementation) which calls the libraries that will communicate with the
crypto cards. OpenCryptoki makes use of flock and ipc and, as of now,
this is only need on s390 architecture.

Signed-off-by: Eduardo Barretto <ebarretto@xxxxxxxxxxxxxxxxxx>
---
 sandbox-seccomp-filter.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sandbox-seccomp-filter.c b/sandbox-seccomp-filter.c
index ca75cc7..6e7de31 100644
--- a/sandbox-seccomp-filter.c
+++ b/sandbox-seccomp-filter.c
@@ -166,6 +166,9 @@ static const struct sock_filter preauth_insns[] = {
 #ifdef __NR_exit_group
 	SC_ALLOW(__NR_exit_group),
 #endif
+#if defined(__NR_flock) && defined(__s390__)
+	SC_ALLOW(__NR_flock),
+#endif
 #ifdef __NR_futex
 	SC_ALLOW(__NR_futex),
 #endif
@@ -178,6 +181,9 @@ static const struct sock_filter preauth_insns[] = {
 #ifdef __NR_gettimeofday
 	SC_ALLOW(__NR_gettimeofday),
 #endif
+#if defined(__NR_ipc) && defined(__s390__)
+	SC_ALLOW(__NR_ipc),
+#endif
 #ifdef __NR_getuid
 	SC_ALLOW(__NR_getuid),
 #endif
-- 
1.9.1

getuid and geteuid are needed when using an openssl engine that calls a
crypto card, e.g. ICA (libica).
Those syscalls are also needed by the distros for audit code.

Signed-off-by: Eduardo Barretto <ebarretto@xxxxxxxxxxxxxxxxxx>
---
 sandbox-seccomp-filter.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/sandbox-seccomp-filter.c b/sandbox-seccomp-filter.c
index 6e7de31..e86aa2c 100644
--- a/sandbox-seccomp-filter.c
+++ b/sandbox-seccomp-filter.c
@@ -175,6 +175,18 @@ static const struct sock_filter preauth_insns[] = {
 #ifdef __NR_getpid
 	SC_ALLOW(__NR_getpid),
 #endif
+#ifdef __NR_getuid
+	SC_ALLOW(__NR_getuid),
+#endif
+#ifdef __NR_getuid32
+	SC_ALLOW(__NR_getuid32),
+#endif
+#ifdef __NR_geteuid
+	SC_ALLOW(__NR_geteuid),
+#endif
+#ifdef __NR_geteuid32
+	SC_ALLOW(__NR_geteuid32),
+#endif
 #ifdef __NR_getrandom
 	SC_ALLOW(__NR_getrandom),
 #endif
-- 1.9.1
1.9.1
diff -up openssh-7.6p1/sandbox-seccomp-filter.c.sandbox openssh-7.6p1/sandbox-seccomp-filter.c
--- openssh-7.6p1/sandbox-seccomp-filter.c.sandbox	2017-12-12 13:59:30.563874059 +0100
+++ openssh-7.6p1/sandbox-seccomp-filter.c	2017-12-12 13:59:14.842784083 +0100
@@ -190,6 +190,9 @@ static const struct sock_filter preauth_
 #ifdef __NR_geteuid32
 	SC_ALLOW(__NR_geteuid32),
 #endif
+#ifdef __NR_gettid
+	SC_ALLOW(__NR_gettid),
+#endif
 #ifdef __NR_getrandom
 	SC_ALLOW(__NR_getrandom),
 #endif