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From 1424a23f9d76785da41d3f8ccd9f0658abd062da Mon Sep 17 00:00:00 2001
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From: Andrey Borzenkov <arvidjaar@gmail.com>
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Date: Mon, 6 May 2013 22:13:34 +0400
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Subject: [PATCH 428/482] Reimplement grub-reboot to not depend on
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saved_entry. Use next_entry variable for one time boot menu entry.
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---
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ChangeLog | 5 +++++
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util/grub-reboot.in | 17 ++++++-----------
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util/grub-set-default.in | 1 +
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util/grub.d/00_header.in | 14 +++++++++++++-
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4 files changed, 25 insertions(+), 12 deletions(-)
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diff --git a/ChangeLog b/ChangeLog
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index b79c57a..16c5404 100644
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -1,3 +1,8 @@
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+2013-05-06 Andrey Borzenkov <arvidjaar@gmail.com>
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+
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+ Reimplement grub-reboot to not depend on saved_entry. Use next_entry
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+ variable for one time boot menu entry.
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+
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2013-05-05 Bean <bean123ch@gmail.com>
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* grub-core/commands/testspeed.c: New command testspeed.
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diff --git a/util/grub-reboot.in b/util/grub-reboot.in
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index 1a91d36..d132e4f 100644
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--- a/util/grub-reboot.in
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+++ b/util/grub-reboot.in
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@@ -46,8 +46,6 @@ export TEXTDOMAINDIR="@localedir@"
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usage () {
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gettext_printf "Usage: %s [OPTION] MENU_ENTRY\n" "$self"
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gettext "Set the default boot menu entry for GRUB, for the next boot only."; echo
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- gettext_printf "This requires setting GRUB_DEFAULT=saved in %s/default/grub.\n" "$sysconfdir"
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- echo
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print_option_help "-h, --help" "$(gettext "print this message and exit")"
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print_option_help "-v, --version" "$(gettext "print the version information and exit")"
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dirmsg="$(gettext_printf "expect GRUB images under the directory DIR/%s instead of the %s directory" "@grubdirname@" "$grubdir")"
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@@ -129,17 +127,14 @@ fi
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grubdir=`echo "${bootdir}/@grubdirname@" | sed 's,//*,/,g'`
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-prev_saved_entry=`$grub_editenv ${grubdir}/grubenv list | sed -n 's/^saved_entry=//p'`
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+# Restore saved_entry if it was set by previous version
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+prev_saved_entry=`$grub_editenv ${grubdir}/grubenv list | sed -n 's/^prev_saved_entry=//p'`
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if [ "$prev_saved_entry" ]; then
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- $grub_editenv ${grubdir}/grubenv set prev_saved_entry="$prev_saved_entry"
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-else
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- # We need some non-empty value for prev_saved_entry so that GRUB will
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- # recognise that grub-reboot has been used and restore the previous
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- # saved entry. "0" is the same as an empty value, i.e. the first menu
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- # entry.
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- $grub_editenv ${grubdir}/grubenv set prev_saved_entry=0
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+ $grub_editenv ${grubdir}/grubenv set saved_entry="$prev_saved_entry"
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+ $grub_editenv ${grubdir}/grubenv unset prev_saved_entry
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fi
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-$grub_editenv ${grubdir}/grubenv set saved_entry="$entry"
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+
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+$grub_editenv ${grubdir}/grubenv set next_entry="$entry"
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# Bye.
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exit 0
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diff --git a/util/grub-set-default.in b/util/grub-set-default.in
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index ea18da1..d607318 100644
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--- a/util/grub-set-default.in
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+++ b/util/grub-set-default.in
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@@ -130,6 +130,7 @@ fi
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grubdir=`echo "${bootdir}/@grubdirname@" | sed 's,//*,/,g'`
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$grub_editenv ${grubdir}/grubenv unset prev_saved_entry
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+$grub_editenv ${grubdir}/grubenv unset next_entry
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$grub_editenv ${grubdir}/grubenv set saved_entry="$entry"
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# Bye.
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diff --git a/util/grub.d/00_header.in b/util/grub.d/00_header.in
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index 3da5d12..2c4bb0a 100644
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--- a/util/grub.d/00_header.in
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+++ b/util/grub.d/00_header.in
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@@ -51,13 +51,25 @@ if [ "x$GRUB_BUTTON_CMOS_ADDRESS" != "x" ]; then
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cat <
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if cmostest $GRUB_BUTTON_CMOS_ADDRESS ; then
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set default="${GRUB_DEFAULT_BUTTON}"
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+elif [ "\${next_entry}" ] ; then
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+ set default="\${next_entry}"
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+ set next_entry=
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+ save_env next_entry
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+ set boot_once=true
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else
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set default="${GRUB_DEFAULT}"
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fi
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EOF
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else
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cat <
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-set default="${GRUB_DEFAULT}"
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+if [ "\${next_entry}" ] ; then
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+ set default="\${next_entry}"
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+ set next_entry=
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+ save_env next_entry
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+ set boot_once=true
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+else
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+ set default="${GRUB_DEFAULT}"
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+fi
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EOF
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fi
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cat <
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--
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1.8.2.1
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