chrony: fix build failure for arma9

Eliminate references to syscalls not available
for ARM_EABI.  Also add a dependency on libseccomp
which is needed for scfilter to work.

Set PACKAGECONFIG to not enable scfilter, since
kernel CONFIG_SECCOMP is unlikely to be set.  This
aligns the usage of libseccomp with that of other packages.

Signed-off-by: Joe Slater <jslater@windriver.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-networking/recipes-support/chrony/chrony/arm_eabi.patch

@@ -0,0 +1,57 @@
+    chrony: fix build failure for arma9
+    
+    Eliminate references to syscalls not available
+    for ARM_EABI.  Also add a dependency on libseccomp
+    which is needed for scfilter to work.
+    
+    Set PACKAGECONFIG to not enable scfilter, since
+    kernel CONFIG_SECCOMP is unlikely to be set.  This
+    aligns the usage of libseccomp with that of other packages.
+
+    Upstream-Status: Pending
+    
+    Signed-off-by: Joe Slater <jslater@windriver.com>
+
+--- a/sys_linux.c
++++ b/sys_linux.c
+@@ -453,13 +453,12 @@ SYS_Linux_EnableSystemCallFilter(int lev
+   const int syscalls[] = {
+     /* Clock */
+     SCMP_SYS(adjtimex), SCMP_SYS(gettimeofday), SCMP_SYS(settimeofday),
+-    SCMP_SYS(time),
+     /* Process */
+-    SCMP_SYS(clone), SCMP_SYS(exit), SCMP_SYS(exit_group), SCMP_SYS(getrlimit),
++    SCMP_SYS(clone), SCMP_SYS(exit), SCMP_SYS(exit_group),
+     SCMP_SYS(rt_sigaction), SCMP_SYS(rt_sigreturn), SCMP_SYS(rt_sigprocmask),
+     SCMP_SYS(set_tid_address), SCMP_SYS(sigreturn), SCMP_SYS(wait4),
+     /* Memory */
+-    SCMP_SYS(brk), SCMP_SYS(madvise), SCMP_SYS(mmap), SCMP_SYS(mmap2),
++    SCMP_SYS(brk), SCMP_SYS(madvise), SCMP_SYS(mmap2),
+     SCMP_SYS(mprotect), SCMP_SYS(mremap), SCMP_SYS(munmap), SCMP_SYS(shmdt),
+     /* Filesystem */
+     SCMP_SYS(access), SCMP_SYS(chmod), SCMP_SYS(chown), SCMP_SYS(chown32),
+@@ -470,14 +469,21 @@ SYS_Linux_EnableSystemCallFilter(int lev
+     SCMP_SYS(bind), SCMP_SYS(connect), SCMP_SYS(getsockname),
+     SCMP_SYS(recvfrom), SCMP_SYS(recvmsg), SCMP_SYS(sendmmsg),
+     SCMP_SYS(sendmsg), SCMP_SYS(sendto),
+-    /* TODO: check socketcall arguments */
+-    SCMP_SYS(socketcall),
+     /* General I/O */
+     SCMP_SYS(_newselect), SCMP_SYS(close), SCMP_SYS(open), SCMP_SYS(pipe),
+-    SCMP_SYS(poll), SCMP_SYS(read), SCMP_SYS(futex), SCMP_SYS(select),
++    SCMP_SYS(poll), SCMP_SYS(read), SCMP_SYS(futex),
+     SCMP_SYS(set_robust_list), SCMP_SYS(write),
+     /* Miscellaneous */
+     SCMP_SYS(uname),
++    /* not always available */
++#if ! defined(__ARM_EABI__)
++    SCMP_SYS(time),
++    SCMP_SYS(getrlimit),
++    SCMP_SYS(select),
++    SCMP_SYS(mmap),
++    /* TODO: check socketcall arguments */
++    SCMP_SYS(socketcall),
++#endif
+   };
+ 
+   const int socket_domains[] = {

meta-networking/recipes-support/chrony/chrony_2.4.bb

@@ -33,6 +33,7 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=751419260aa954499f7abaabaa882bbe"
 SRC_URI = "https://download.tuxfamily.org/chrony/chrony-${PV}.tar.gz \
     file://chrony.conf \
     file://chronyd \
+    file://arm_eabi.patch \
 "
 SRC_URI[md5sum] = "d0598aa8a9be8faccef9386f6fc0d5f2"
 SRC_URI[sha256sum] = "8d04e7cda2333289c2104b731d39c3c1db94816e43bae35d7ee4e7ae8af6391f"
@@ -58,14 +59,14 @@ inherit update-rc.d systemd
 #     chrony.conf and init script.
 #   - 'scfilter' enables support for system call filtering, but requires the
 #     kernel to have CONFIG_SECCOMP enabled.
-PACKAGECONFIG ??= "editline scfilter \
+PACKAGECONFIG ??= "editline \
     ${@bb.utils.contains('DISTRO_FEATURES', 'ipv6', 'ipv6', '', d)} \
 "
 PACKAGECONFIG[readline] = "--without-editline,--without-readline,readline"
 PACKAGECONFIG[editline] = ",--without-editline,libedit"
 PACKAGECONFIG[sechash] = "--without-tomcrypt,--disable-sechash,nss"
 PACKAGECONFIG[privdrop] = ",--disable-privdrop,libcap"
-PACKAGECONFIG[scfilter] = "--enable-scfilter,--without-seccomp"
+PACKAGECONFIG[scfilter] = "--enable-scfilter,--without-seccomp,libseccomp"
 PACKAGECONFIG[ipv6] = ",--disable-ipv6,"
 PACKAGECONFIG[nss] = "--with-nss,--without-nss,nss"
 PACKAGECONFIG[libcap] = "--with-libcap,--without-libcap,libcap"