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, GRUB_TOP_LEVEL_XEN and GRUB_TOP_LEVEL_OS_PROBER variables to allow users to specify the top-level entry. The only file that was tested is 10_linux. I do not have access to any of the other images or systems so they remain untested. Signed-off-by: Denton Liu <liu.den...@gmail.com> --- docs/grub.texi | 6 ++++++ util/grub-mkconfig.in | 3 +++ util/grub-mkconfig_lib.in | 21 +++++++++++++++++++++ util/grub.d/10_hurd.in | 4 ++++ util/grub.d/10_kfreebsd.in | 4 ++++ util/grub.d/10_linux.in | 4 ++++ util/grub.d/10_netbsd.in | 10 +++++++++- util/grub.d/20_linux_xen.in | 7 +++++++ util/grub.d/30_os-prober.in | 4 ++++ 9 files changed, 62 insertions(+), 1 deletion(-) diff --git a/docs/grub.texi b/docs/grub.texi index 107f66ebc..16a445178 100644 --- a/docs/grub.texi +++ b/docs/grub.texi @@ -1444,6 +1444,12 @@ 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 +@item GRUB_TOP_LEVEL_XEN +@item GRUB_TOP_LEVEL_OS_PROBER +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..32c480dae 100644 --- a/util/grub-mkconfig.in +++ b/util/grub-mkconfig.in @@ -233,6 +233,9 @@ export GRUB_DEFAULT \ GRUB_CMDLINE_NETBSD \ GRUB_CMDLINE_NETBSD_DEFAULT \ GRUB_CMDLINE_GNUMACH \ + GRUB_TOP_LEVEL \ + GRUB_TOP_LEVEL_XEN \ + GRUB_TOP_LEVEL_OS_PROBER \ 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_hurd.in b/util/grub.d/10_hurd.in index 4294bbe4c..0ae5a3927 100644 --- a/util/grub.d/10_hurd.in +++ b/util/grub.d/10_hurd.in @@ -205,6 +205,10 @@ submenu_indentation="" reverse_sorted_kernels=$(echo ${kernels} | tr ' ' '\n' | sed -e 's/\.old$/ 1/; / 1$/! s/$/ 2/' | version_sort -r | sed -e 's/ 1$/.old/; s/ 2$//') +if [ "x$GRUB_TOP_LEVEL" != x ]; then + reverse_sorted_kernels=$(grub_move_entry_to_front "$GRUB_TOP_LEVEL" ${reverse_sorted_kernels}) +fi + is_top_level=true for kernel in ${reverse_sorted_kernels}; do diff --git a/util/grub.d/10_kfreebsd.in b/util/grub.d/10_kfreebsd.in index 0a67decaa..506b2df66 100644 --- a/util/grub.d/10_kfreebsd.in +++ b/util/grub.d/10_kfreebsd.in @@ -164,6 +164,10 @@ submenu_indentation="" reverse_sorted_list=$(echo ${list} | tr ' ' '\n' | sed -e 's/\.old$/ 1/; / 1$/! s/$/ 2/' | version_sort -r | sed -e 's/ 1$/.old/; s/ 2$//') +if [ "x$GRUB_TOP_LEVEL" != x ]; then + reverse_sorted_list=$(grub_move_entry_to_front "$GRUB_TOP_LEVEL" ${reverse_sorted_list}) +fi + is_top_level=true for kfreebsd in ${reverse_sorted_list}; do diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in index c6a1ec935..a479c16af 100644 --- a/util/grub.d/10_linux.in +++ b/util/grub.d/10_linux.in @@ -202,6 +202,10 @@ submenu_indentation="" reverse_sorted_list=$(echo $list | tr ' ' '\n' | sed -e 's/\.old$/ 1/; / 1$/! s/$/ 2/' | version_sort -r | sed -e 's/ 1$/.old/; s/ 2$//') +if [ "x$GRUB_TOP_LEVEL" != x ]; then + reverse_sorted_list=$(grub_move_entry_to_front "$GRUB_TOP_LEVEL" ${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/10_netbsd.in b/util/grub.d/10_netbsd.in index dc0cd1b17..4eae58e82 100644 --- a/util/grub.d/10_netbsd.in +++ b/util/grub.d/10_netbsd.in @@ -147,10 +147,18 @@ pattern="^ELF[^,]*executable.*statically linked" submenu_indentation="" is_top_level=true -for k in /netbsd $(ls -t /netbsd?* 2>/dev/null) ; do +grub_top_level_found=false +for k in "$GRUB_TOP_LEVEL" /netbsd $(ls -t /netbsd?* 2>/dev/null) ; do if ! grub_file_is_not_garbage "$k" ; then continue fi + if [ "x$GRUB_TOP_LEVEL" = "x$k" ] ; then + if [ "x$grub_top_level_found" = xfalse ] ; then + grub_top_level_found=true + else + continue + fi + fi if ! (zcat -f "$k" | file -bL - | grep -q "${pattern}") 2>/dev/null ; then continue fi diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in index 626aed40c..c32bb979f 100644 --- a/util/grub.d/20_linux_xen.in +++ b/util/grub.d/20_linux_xen.in @@ -245,6 +245,13 @@ submenu_indentation="" reverse_sorted_xen_list=$(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 ${reverse_sorted_xen_list}; do diff --git a/util/grub.d/30_os-prober.in b/util/grub.d/30_os-prober.in index daa603778..9b2a96bd0 100644 --- a/util/grub.d/30_os-prober.in +++ b/util/grub.d/30_os-prober.in @@ -113,6 +113,10 @@ EOF used_osprober_linux_ids= +if [ "x$GRUB_TOP_LEVEL_OS_PROBER" != x ]; then + OSPROBED=$(grub_move_entry_to_front "$GRUB_TOP_LEVEL_OS_PROBER" ${OSPROBED}) +fi + for OS in ${OSPROBED} ; do DEVICE="`echo ${OS} | cut -d ':' -f 1`" LONGNAME="`echo ${OS} | cut -d ':' -f 2 | tr '^' ' '`" -- 2.37.3 _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel