bootctl: add "link" command

shell-completion/bash/bootctl

@@ -43,7 +43,8 @@ _bootctl() {
                --efi-boot-option-description --efi-boot-option-description-with-device
                --secure-boot-auto-enroll --private-key
                --private-key-source --certificate --certificate-source
-               --oldest'
+               --oldest --keep-free --entry-title --entry-version --entry-commit
+               -X --extra --tries-left'
     )
 
     if __contains_word "$prev" ${OPTS[ARG]}; then
@@ -62,7 +63,7 @@ _bootctl() {
             --entry-token)
                 comps="machine-id os-id os-image-id auto literal:"
                 ;;
-            --image|--root)
+            --image|--root|-X|--extra)
                 compopt -o nospace
                 comps=$( compgen -A file -- "$cur" )
                 ;;
@@ -89,7 +90,7 @@ _bootctl() {
         [STANDALONE]='help status install update remove is-installed random-seed list set-timeout set-timeout-oneshot cleanup'
         [BOOTENTRY]='set-default set-oneshot set-sysfail set-preferred unlink'
         [BOOLEAN]='reboot-to-firmware'
-        [FILE]='kernel-identify kernel-inspect'
+        [FILE]='kernel-identify kernel-inspect link'
     )
 
     for ((i=0; i < COMP_CWORD; i++)); do

shell-completion/zsh/_bootctl

@@ -36,6 +36,10 @@ _bootctl_unlink() {
     _bootctl_comp_ids
 }
 
+_bootctl_link() {
+    _files
+}
+
 _bootctl_kernel-identify() {
     _files
 }
@@ -70,6 +74,7 @@ _bootctl_reboot-to-firmware() {
         "set-timeout:Set the menu timeout"
         "set-timeout-oneshot:Set the menu timeout for the next boot only"
         "unlink:Remove boot loader entry"
+        "link:Add boot loader entry"
         "cleanup:Remove files in ESP not referenced in any boot entry"
         "kernel-identify:Identify kernel image type"
         "kernel-inspect:Print details about the kernel image"