update seccomp filter for new glibc (#1990589)

Resolves: #1990589

chrony-seccomp.patch

@@ -0,0 +1,30 @@
+commit bbbd80bf03223f181d4abf5c8e5fe6136ab6129a
+Author: Miroslav Lichvar <mlichvar@redhat.com>
+Date:   Mon Aug 9 11:48:21 2021 +0200
+
+    sys_linux: allow clone3 and pread64 in seccomp filter
+    
+    These seem to be needed with the latest glibc.
+
+diff --git a/sys_linux.c b/sys_linux.c
+index 50c08431..2b53f722 100644
+--- a/sys_linux.c
++++ b/sys_linux.c
+@@ -503,6 +503,9 @@ SYS_Linux_EnableSystemCallFilter(int level, SYS_ProcessContext context)
+ 
+     /* Process */
+     SCMP_SYS(clone),
++#ifdef __NR_clone3
++    SCMP_SYS(clone3),
++#endif
+     SCMP_SYS(exit),
+     SCMP_SYS(exit_group),
+     SCMP_SYS(getpid),
+@@ -595,6 +598,7 @@ SYS_Linux_EnableSystemCallFilter(int level, SYS_ProcessContext context)
+ #ifdef __NR_ppoll_time64
+     SCMP_SYS(ppoll_time64),
+ #endif
++    SCMP_SYS(pread64),
+     SCMP_SYS(pselect6),
+ #ifdef __NR_pselect6_time64
+     SCMP_SYS(pselect6_time64),

chrony.spec

@@ -24,6 +24,8 @@ Source10:       https://github.com/mlichvar/clknetsim/archive/%{clknetsim_ver}/c
 
 # add distribution-specific bits to DHCP dispatcher
 Patch1:         chrony-nm-dispatcher-dhcp.patch
+# update seccomp filter for new glibc
+Patch2:         chrony-seccomp.patch
 
 BuildRequires:  libcap-devel libedit-devel nettle-devel pps-tools-devel
 BuildRequires:  gcc gcc-c++ make bison systemd gnupg2
@@ -55,6 +57,7 @@ service to other computers in the network.
 %setup -q -n %{name}-%{version}%{?prerelease} -a 10
 %{?gitpatch:%patch0 -p1}
 %patch1 -p1 -b .nm-dispatcher-dhcp
+%patch2 -p1 -b .seccomp
 
 %{?gitpatch: echo %{version}-%{gitpatch} > version.txt}