A user may wish to use an image that is not sorted as the "latest" version as the top-level entry. For example, in Arch Linux, if a user has the LTS and regular kernels installed, `/boot/vmlinuz-linux-lts` gets sorted as the "latest" compared to `/boot/vmlinuz-linux`. However, a user may wish to use the regular kernel as the default with the LTS only existing as a backup.
Introduce the GRUB_TOP_LEVEL_LINUX and GRUB_TOP_LEVEL_XEN variables to allow users to specify the top-level entry. Signed-off-by: Denton Liu <liu.den...@gmail.com> --- docs/grub.texi | 5 +++++ util/grub-mkconfig.in | 2 ++ util/grub-mkconfig_lib.in | 21 +++++++++++++++++++++ util/grub.d/10_linux.in | 4 ++++ util/grub.d/20_linux_xen.in | 7 +++++++ 5 files changed, 39 insertions(+) diff --git a/docs/grub.texi b/docs/grub.texi index 107f66ebc..54bd32882 100644 --- a/docs/grub.texi +++ b/docs/grub.texi @@ -1444,6 +1444,11 @@ for all respectively normal entries. The values of these options replace the values of @samp{GRUB_CMDLINE_LINUX} and @samp{GRUB_CMDLINE_LINUX_DEFAULT} for Linux and Xen menu entries. +@item GRUB_TOP_LEVEL_LINUX +@item GRUB_TOP_LEVEL_XEN +If this option is provided, the given image file will be made the top-level +entry if the image file is found in the scan. + @item GRUB_EARLY_INITRD_LINUX_CUSTOM @itemx GRUB_EARLY_INITRD_LINUX_STOCK List of space-separated early initrd images to be loaded from @samp{/boot}. diff --git a/util/grub-mkconfig.in b/util/grub-mkconfig.in index 62335d027..f7ad160b4 100644 --- a/util/grub-mkconfig.in +++ b/util/grub-mkconfig.in @@ -233,6 +233,8 @@ export GRUB_DEFAULT \ GRUB_CMDLINE_NETBSD \ GRUB_CMDLINE_NETBSD_DEFAULT \ GRUB_CMDLINE_GNUMACH \ + GRUB_TOP_LEVEL_LINUX \ + GRUB_TOP_LEVEL_XEN \ GRUB_EARLY_INITRD_LINUX_CUSTOM \ GRUB_EARLY_INITRD_LINUX_STOCK \ GRUB_TERMINAL_INPUT \ diff --git a/util/grub-mkconfig_lib.in b/util/grub-mkconfig_lib.in index 634bc8a50..5be49a07c 100644 --- a/util/grub-mkconfig_lib.in +++ b/util/grub-mkconfig_lib.in @@ -218,6 +218,27 @@ version_sort () esac } +grub_move_entry_to_front () +{ + entry="$1" + shift + + entry_found=false + for i in "$@"; do + if [ "x$i" = "x$entry" ]; then + entry_found=true + fi + done + + if [ "x$entry_found" = xtrue ]; then + echo "$entry" + fi + for i in "$@"; do + if [ "x$i" = "x$entry" ]; then continue; fi + echo "$i" + done +} + # One layer of quotation is eaten by "" and the second by sed; so this turns # ' into \'. grub_quote () { diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in index c6a1ec935..05e01fc85 100644 --- a/util/grub.d/10_linux.in +++ b/util/grub.d/10_linux.in @@ -202,6 +202,10 @@ submenu_indentation="" reverse_sorted_list=$(echo $list | tr ' ' '\n' | sed -e 's/\.old$/ 1/; / 1$/! s/$/ 2/' | version_sort -r | sed -e 's/ 1$/.old/; s/ 2$//') +if [ "x$GRUB_TOP_LEVEL_LINUX" != x ]; then + reverse_sorted_list=$(grub_move_entry_to_front "$GRUB_TOP_LEVEL_LINUX" ${reverse_sorted_list}) +fi + is_top_level=true for linux in ${reverse_sorted_list}; do gettext_printf "Found linux image: %s\n" "$linux" >&2 diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in index 626aed40c..c32bb979f 100644 --- a/util/grub.d/20_linux_xen.in +++ b/util/grub.d/20_linux_xen.in @@ -245,6 +245,13 @@ submenu_indentation="" reverse_sorted_xen_list=$(echo ${xen_list} | tr ' ' '\n' | sed -e 's/\.old$/ 1/; / 1$/! s/$/ 2/' | version_sort -r | sed -e 's/ 1$/.old/; s/ 2$//') reverse_sorted_linux_list=$(echo ${linux_list} | tr ' ' '\n' | sed -e 's/\.old$/ 1/; / 1$/! s/$/ 2/' | version_sort -r | sed -e 's/ 1$/.old/; s/ 2$//') +if [ "x$GRUB_TOP_LEVEL_XEN" != x ]; then + reverse_sorted_xen_list=$(grub_move_entry_to_front "$GRUB_TOP_LEVEL_XEN" ${reverse_sorted_xen_list}) +fi +if [ "x$GRUB_TOP_LEVEL_LINUX" != x ]; then + reverse_sorted_linux_list=$(grub_move_entry_to_front "$GRUB_TOP_LEVEL_LINUX" ${reverse_sorted_linux_list}) +fi + is_top_level=true for current_xen in ${reverse_sorted_xen_list}; do -- 2.37.3 _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel