97 lines
3.7 KiB
Diff
97 lines
3.7 KiB
Diff
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From: Michael Chang <mchang@suse.com>
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Subject: provide overridable root by subvol
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References: fate#316522, fate#316232
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Patch-Mainline: no
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This patch provides a environment variable $subvol that can be used
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to override path relative to absolute root by specific $subvol.
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Signed-off-by: Michael Chang <mchang@suse.com>
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Index: grub-2.02~beta2/util/grub.d/10_linux.in
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===================================================================
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--- grub-2.02~beta2.orig/util/grub.d/10_linux.in
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+++ grub-2.02~beta2/util/grub.d/10_linux.in
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@@ -55,7 +55,9 @@ case x"$GRUB_FS" in
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xbtrfs)
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rootsubvol="`make_system_path_relative_to_its_root /`"
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rootsubvol="${rootsubvol#/}"
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- if [ "x${rootsubvol}" != x ]; then
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+ if [ "x$overridable_root_by_subvol" = "xtrue" ]; then
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+ GRUB_CMDLINE_LINUX="\${rootflags} ${GRUB_CMDLINE_LINUX}"
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+ elif [ "x${rootsubvol}" != x ]; then
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GRUB_CMDLINE_LINUX="rootflags=subvol=${rootsubvol} ${GRUB_CMDLINE_LINUX}"
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fi;;
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xzfs)
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@@ -126,17 +128,43 @@ linux_entry ()
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fi
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printf '%s\n' "${prepare_boot_cache}" | sed "s/^/$submenu_indentation/"
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fi
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+
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+ if [ "x$overridable_root_by_subvol" = "xtrue" -a "x$GRUB_FS" = "xbtrfs" ]; then
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+ sed "s/^/$submenu_indentation/" << EOF
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+ if [ "x\$subvol" = "x" ]; then
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+ bootdir="${rel_dirname}"
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+ rootdir="${rootsubvol}"
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+ else
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+ bootdir="\${subvol}${dirname}"
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+ rootdir="\${subvol}"
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+ fi
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+ if [ "x\${rootdir}" != "x" ]; then
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+ rootflags="rootflags=subvol=\${rootdir}"
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+ else
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+ rootflags=""
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+ fi
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+EOF
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+ fi
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+
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message="$(gettext_printf "Loading Linux %s ..." ${version})"
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if [ -d /sys/firmware/efi ] && [ "x${GRUB_USE_LINUXEFI}" = "xtrue" ]; then
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sed "s/^/$submenu_indentation/" << EOF
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echo '$message'
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- linuxefi ${rel_dirname}/${basename} root=${linux_root_device_thisversion} ro ${args}
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EOF
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+ if [ "x$overridable_root_by_subvol" = "xtrue" -a "x$GRUB_FS" = "xbtrfs" ]; then
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+ echo " linuxefi \${bootdir}/${basename} root=${linux_root_device_thisversion} ro ${args}" | sed "s/^/$submenu_indentation/"
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+ else
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+ echo " linuxefi ${rel_dirname}/${basename} root=${linux_root_device_thisversion} ro ${args}" | sed "s/^/$submenu_indentation/"
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+ fi
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else
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sed "s/^/$submenu_indentation/" << EOF
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echo '$(echo "$message" | grub_quote)'
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- linux ${rel_dirname}/${basename} root=${linux_root_device_thisversion} ${args}
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EOF
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+ if [ "x$overridable_root_by_subvol" = "xtrue" -a "x$GRUB_FS" = "xbtrfs" ]; then
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+ echo " linux \${bootdir}/${basename} root=${linux_root_device_thisversion} ${args}" | sed "s/^/$submenu_indentation/"
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+ else
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+ echo " linux ${rel_dirname}/${basename} root=${linux_root_device_thisversion} ${args}" | sed "s/^/$submenu_indentation/"
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+ fi
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fi
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if test -n "${initrd}" ; then
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# TRANSLATORS: ramdisk isn't identifier. Should be translated.
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@@ -144,13 +172,21 @@ EOF
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if [ -d /sys/firmware/efi ] && [ "x${GRUB_USE_LINUXEFI}" = "xtrue" ]; then
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sed "s/^/$submenu_indentation/" << EOF
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echo '$message'
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- initrdefi ${rel_dirname}/${initrd}
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EOF
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+ if [ "x$overridable_root_by_subvol" = "xtrue" -a "x$GRUB_FS" = "xbtrfs" ]; then
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+ echo " initrdefi \${bootdir}/${initrd}" | sed "s/^/$submenu_indentation/"
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+ else
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+ echo " initrdefi ${rel_dirname}/${initrd}" | sed "s/^/$submenu_indentation/"
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+ fi
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else
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sed "s/^/$submenu_indentation/" << EOF
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echo '$(echo "$message" | grub_quote)'
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- initrd ${rel_dirname}/${initrd}
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EOF
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+ if [ "x$overridable_root_by_subvol" = "xtrue" -a "x$GRUB_FS" = "xbtrfs" ]; then
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+ echo " initrd \${bootdir}/${initrd}" | sed "s/^/$submenu_indentation/"
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+ else
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+ echo " initrd ${rel_dirname}/${initrd}" | sed "s/^/$submenu_indentation/"
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+ fi
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fi
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fi
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sed "s/^/$submenu_indentation/" << EOF
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