update-deffered.sh: add crdate function for Sisyphus archive

etersoft-cron/update-deffered.sh

 #!/bin/sh
 
+# TODO: использовать COW
+
+copy_base()
+{
+    local from="$1"
+    local to="$2"
+    for i in $from/*/base ; do
+        arch="$(basename $(dirname $i))"
+        rm -r $to/$arch/base
+        cp -a $i $to/$arch/base
+    done
+}
+
+crdate()
+{
+    local from="$1"
+    local to="$2"
+    d="$(date "+%Y-%m-%d")"
+    #d="2025-05-28"
+    [ -d "$to/$d" ] && return 1
+    cp -la "$from" "$to/$d"
+    copy_base "$from" "$to/$d"
+    ln -s "$d" "$to/last-new" || return 1
+    # TODO: exchange
+    rm "$to/last"
+    mv "$to/last-new" "$to/last"
+}
+
 # Создание и обновление архива
-#etertimemachine update --link /var/ftp/pub/Etersoft/Sisyphus/Deferred /var/ftp/pub/Etersoft/Sisyphus/archive
-etertimemachine update --link /var/ftp/pub/ALTLinux/Sisyphus /var/ftp/pub/Etersoft/Sisyphus/archive
+#etertimemachine update --link /var/ftp/pub/ALTLinux/Sisyphus /var/ftp/pub/Etersoft/Sisyphus/archive
+crdate /var/ftp/pub/ALTLinux/Sisyphus /var/ftp/pub/Etersoft/Sisyphus/archive
 
 # Откладывание даты
 #etertimemachine rotate --link /var/ftp/pub/Etersoft/Sisyphus/archive