openssh: Allow clock_nanosleep/clock_gettime64/clock_nanosleep_time64 syscall

Fixes connection denials with these syscalls being there on upcoming glibc 2.31 release

(From OE-Core rev: 557d464de217cdf959aa275d20e7b155e4130ec7)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-connectivity/openssh/openssh/0001-seccomp-Allow-clock_gettime64-in-sandbox.patch

@@ -0,0 +1,31 @@
+From eae3e85322fa7c869f5822db4eda6348f2beb09e Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Tue, 7 Jan 2020 16:26:45 -0800
+Subject: [PATCH] seccomp: Allow clock_gettime64() in sandbox.
+
+This helps sshd accept connections on mips platforms with
+upcoming glibc ( 2.31 )
+
+Upstream-Status: Accepted [https://github.com/openssh/openssh-portable/pull/161]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ sandbox-seccomp-filter.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/sandbox-seccomp-filter.c b/sandbox-seccomp-filter.c
+index 3ef30c9..999c46c 100644
+--- a/sandbox-seccomp-filter.c
++++ b/sandbox-seccomp-filter.c
+@@ -248,6 +248,9 @@ static const struct sock_filter preauth_insns[] = {
+ #ifdef __NR_clock_nanosleep_time64
+ 	SC_ALLOW(__NR_clock_nanosleep_time64),
+ #endif
++#ifdef __NR_clock_gettime64
++	SC_ALLOW(__NR_clock_gettime64),
++#endif
+ #ifdef __NR__newselect
+ 	SC_ALLOW(__NR__newselect),
+ #endif
+-- 
+2.24.1
+

meta/recipes-connectivity/openssh/openssh/openssh-8.1p1-seccomp-nanosleep.patch

@@ -0,0 +1,27 @@
+commit 7e929163ed40f9ce90060a3ca6df558c3d901379
+Author: Jakub Jelen <jjelen@redhat.com>
+Date:   Wed Nov 13 12:57:05 2019 +0100
+
+seccomp: Allow clock_nanosleep() to make OpenSSH working with latest glibc
+sandbox-seccomp: Allow clock_nanosleep on ARM
+
+Upstream-Status: Backport [https://github.com/tcely/openssh-portable/pull/258]
+                          [https://github.com/bobby0809/openssh-portable/pull/138]
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com
+
+--- a/sandbox-seccomp-filter.c
++++ b/sandbox-seccomp-filter.c
+@@ -242,6 +242,12 @@ static const struct sock_filter preauth_
+ #ifdef __NR_nanosleep
+ 	SC_ALLOW(__NR_nanosleep),
+ #endif
++#ifdef __NR_clock_nanosleep
++	SC_ALLOW(__NR_clock_nanosleep),
++#endif
++#ifdef __NR_clock_nanosleep_time64
++	SC_ALLOW(__NR_clock_nanosleep_time64),
++#endif
+ #ifdef __NR__newselect
+ 	SC_ALLOW(__NR__newselect),
+ #endif

meta/recipes-connectivity/openssh/openssh_8.1p1.bb

@@ -24,6 +24,8 @@ SRC_URI = "http://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-${PV}.tar
            file://fix-potential-signed-overflow-in-pointer-arithmatic.patch \
            file://sshd_check_keys \
            file://add-test-support-for-busybox.patch \
+           file://openssh-8.1p1-seccomp-nanosleep.patch \
+           file://0001-seccomp-Allow-clock_gettime64-in-sandbox.patch \
            "
 SRC_URI[md5sum] = "513694343631a99841e815306806edf0"
 SRC_URI[sha256sum] = "02f5dbef3835d0753556f973cd57b4c19b6b1f6cd24c03445e23ac77ca1b93ff"