mklni: Add update

mklni

@@ -70,12 +70,17 @@ arguments() {
                 chroot_into
                 break 2 ;;
 
+            update)
+                update
+                break 2 ;;
+
             -r | -c | --cleanraw | --cleanup)
                 run_makelni "$opt"
-                break ;;
+                break 2 ;;
 
             -h | -help | --help)
-                usage ;;
+                usage 
+                break 2 ;;
         
             *)
                 log "Unknown option: $opt" error
@@ -318,6 +323,7 @@ build()
     
     cp "$lni" "$CHROOTDIR/tmp/lnibuild"
 
+    log "Entering build chroot"
     prepare_chroot || {
         log "Failed to setup chroot" error
         exit 1
@@ -327,6 +333,7 @@ build()
     local exitcode=$?
     rm "$CHROOTDIR/tmp/lnibuild"
 
+    log "Exiting build chroot"
     detach_chroot || {
         log "Failed to detach chroot" error
         exit 1
@@ -372,6 +379,34 @@ run_makelni()
     return "$exitcode"
 }
 
+update()
+{
+    [ ! -d "$CHROOTDIR" ] && {
+        log "Chroot not installed" error
+        exit 1
+    }
+
+    prepare_chroot || {
+        log "Failed to setup chroot" error
+        exit 1
+    }
+    
+    log "Updating makelni"
+    chroot "$CHROOTDIR" /bin/bash -c "cd /makelni && git pull"
+    local exitcode=$?
+
+    detach_chroot || {
+        log "Failed to detach chroot" error
+        exit 1
+    }
+
+    [ "$exitcode" -eq "0" ] || {
+        log "Failed to update makelni" error
+    }
+
+    return "$exitcode"
+}
+
 if [ "$(id -u)" != "0" ]; then
     log "$0 must be run as root"
     exit 3