mklni: Add build function

mklni

@@ -62,6 +62,10 @@ arguments() {
                 remove_chroot 
                 break 2 ;;
 
+build)
+                build "$1"
+                break 2 ;;
+
             chroot)
                 chroot_into
                 break 2 ;;
@@ -89,6 +93,9 @@ usage() {
     # Remove build chroot
     $0 uninstall
 
+    # Make image
+    $0 build path/to/lnibuild
+
     # Chroot into
     $0 chroot
 EOF
@@ -281,6 +288,46 @@ chroot_into()
     }
 }
 
+build()
+{
+    [ ! -d "$CHROOTDIR" ] && {
+        log "Chroot not installed" error
+        exit 1
+    }
+
+    local lni="$1"
+    [ ! -f "$lni" ] && {
+        log "$lni no such file" error
+        exit 2
+    }
+    
+    cp "$lni" "$CHROOTDIR/tmp/lnibuild"
+
+    prepare_chroot || {
+        log "Failed to setup chroot" error
+        exit 1
+    }
+    
+    chroot "$CHROOTDIR" /bin/bash -c "cd /makelni && ./makelni /tmp/lnibuild"
+    local exitcode=$?
+    rm "$CHROOTDIR/tmp/lnibuild"
+
+    detach_chroot || {
+        log "Failed to detach chroot" error
+        exit 1
+    }
+
+    [ "$exitcode" -eq "0" ] || {
+        log "Failed to build image" error
+        exit 1
+    }
+
+    source <( grep name "$lni" )
+    mv "$CHROOTDIR/makelni/out/${name}.lni" "./${name}.lni"
+    chown "$(stat -c '%U:%G' mklni)" "./${name}.lni"
+    exit 0
+}
+
 if [ "$(id -u)" != "0" ]; then
     log "$0 must be run as root"
     exit 3