shadow fix

sys/apps/shadow/shadow.sysconf

@@ -3,5 +3,15 @@ if [ ! -f /var/lib/ymp/sysconf/shadow/postinstall.done ] ; then
     for app in su chage chsh expiry ; do
         chmod u+s /usr/bin/$app
     done
+    touch /etc/group
     date > /var/lib/ymp/sysconf/shadow/postinstall.done
 fi
+if ! grep "^users:" /etc/group >/dev/null ; then
+    echo "users:x:100:" >> /etc/group
+fi
+if ! grep "^wheel:" /etc/group >/dev/null ; then
+    echo "wheel:x:10:root" >> /etc/group
+fi
+if ! grep "^root:" /etc/group >/dev/null ; then
+    echo "root:x:0:root" >> /etc/group
+fi

sys/apps/shadow/system-auth

@@ -0,0 +1,5 @@
+#%PAM-1.0
+auth      required  pam_unix.so              
+account   required  pam_unix.so
+password  required  pam_unix.so 
+session   required  pam_unix.so

sys/apps/shadow/ympbuild

@@ -9,10 +9,12 @@ maintainer='aliriza'
 license=('GPLv3')
 source=("https://github.com/shadow-maint/shadow/releases/download/$version/shadow-$version.tar.xz"
         "useradd.defaults"
-        "shadow.sysconf")
+        "shadow.sysconf"
+        "system-auth")
 depends=(pam libxcrypt acl attr)
 makedepends=( )
 md5sums=('b1ab01b5462ddcf43588374d57bec123'
+         'SKIP'
          'SKIP'
          'SKIP')
 uses=()
@@ -44,6 +46,7 @@ build(){
 package(){
     make install -j`nproc`
     install -vDm 600 ../useradd.defaults "${DESTDIR}/etc/default/useradd"
+    install -vDm 600 ../system-auth "${DESTDIR}/etc/pam.d/system-auth"
     install -vDm 755 ../shadow.sysconf ${DESTDIR}/etc/sysconf.d/shadow
     mkdir -p ${DESTDIR}/etc/ld.so.conf.d/
     echo "/usr/lib64/shadow/" > ${DESTDIR}/etc/ld.so.conf.d/shadow.conf