On Wed, Sep 02, 2009 at 03:11:32PM +0100, Colin Watson wrote:
> Still to do: update grub-set-default to use this (obvious, I think);
> implement 'savedefault --once' and grub-reboot (useful when you want to
> tell the boot loader to boot something else just once, but then return
> to the previous default; consider unattended scenarios).
Here's an update that includes these utilities too. I also shortened the
"chosen_entry" environment variable to simply "chosen"; might as well
save six bytes of kernel size ...
2009-09-03 Vladimir Serbinenko <phco...@gmail.com>
2009-09-03 Colin Watson <cjwat...@ubuntu.com>
* normal/menu.c (grub_menu_execute_entry): Save selected entry title
in `chosen' environment variable.
* normal/menu_text.c (get_entry_number): Check if the variable
matches the title of a menu entry.
(run_menu): Pass menu to get_entry_number.
* util/grub-reboot.in: New file.
* util/grub-set-default.in: New file.
* conf/common.rmk (grub-reboot): New utility.
(grub-set-default): New utility.
* util/grub-mkconfig_lib.in (save_default_entry): New function.
* util/grub.d/00_header.in: If GRUB_DEFAULT is `saved', set
default to `${saved_entry}'. If `${prev_saved_entry}' is non-empty,
move it to `saved_entry' for the next boot. Load environment on
initialisation.
* util/grub.d/10_freebsd.in: Call save_default_entry.
* util/grub.d/10_hurd.in: Likewise.
* util/grub.d/10_linux.in (linux_entry): Likewise.
* util/grub.d/10_windows.in: Likewise.
* util/grub.d/30_os-prober.in: Likewise.
* util/i386/pc/grub-install.in: Create environment block.
* util/i386/efi/grub-install.in: Likewise.
* util/ieee1275/grub-install.in: Likewise.
* util/sparc64/ieee1275/grub-install.in: Likewise.
Index: normal/menu.c
===================================================================
--- normal/menu.c (revision 2561)
+++ normal/menu.c (working copy)
@@ -137,6 +137,8 @@
return;
}
+ grub_env_set ("chosen", entry->title);
+
grub_parser_execute ((char *) entry->sourcecode);
if (grub_errno == GRUB_ERR_NONE && grub_loader_is_loaded ())
Index: normal/menu_text.c
===================================================================
--- normal/menu_text.c (revision 2561)
+++ normal/menu_text.c (working copy)
@@ -237,7 +237,7 @@
/* Get the entry number from the variable NAME. */
static int
-get_entry_number (const char *name)
+get_entry_number (grub_menu_t menu, const char *name)
{
char *val;
int entry;
@@ -250,6 +250,28 @@
entry = (int) grub_strtoul (val, 0, 0);
+ if (grub_errno == GRUB_ERR_BAD_NUMBER)
+ {
+ /* See if the variable matches the title of a menu entry. */
+ grub_menu_entry_t e = menu->entry_list;
+ int i;
+
+ grub_errno = GRUB_ERR_NONE;
+
+ for (i = 0; e; i++)
+ {
+ if (grub_strcmp (e->title, val) == 0)
+ {
+ entry = i;
+ break;
+ }
+ e = e->next;
+ }
+
+ if (! e)
+ entry = -1;
+ }
+
if (grub_errno != GRUB_ERR_NONE)
{
grub_errno = GRUB_ERR_NONE;
@@ -291,7 +313,7 @@
first = 0;
- default_entry = get_entry_number ("default");
+ default_entry = get_entry_number (menu, "default");
/* If DEFAULT_ENTRY is not within the menu entries, fall back to
the first entry. */
Index: util/grub-mkconfig_lib.in
===================================================================
--- util/grub-mkconfig_lib.in (revision 2561)
+++ util/grub-mkconfig_lib.in (working copy)
@@ -130,6 +130,13 @@
echo ${drive}${relative_path}
}
+save_default_entry ()
+{
+ if [ "x${GRUB_DEFAULT}" = "xsaved" ] ; then
+ echo 'save_env saved_entry=${chosen}'
+ fi
+}
+
prepare_grub_to_access_device ()
{
device=$1
Index: util/grub-reboot.in
===================================================================
--- util/grub-reboot.in (revision 0)
+++ util/grub-reboot.in (revision 0)
@@ -0,0 +1,104 @@
+#! /bin/sh
+#
+# Set a default boot entry for GRUB, for the next boot only.
+# Copyright (C) 2004,2009 Free Software Foundation, Inc.
+#
+# GRUB is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# GRUB is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+
+# Initialize some variables.
+transform="@program_transform_name@"
+
+pref...@prefix@
+exec_pref...@exec_prefix@
+bind...@bindir@
+
+grub_editenv=${bindir}/`echo grub-editenv | sed ${transform}`
+rootdir=
+
+# Usage: usage
+# Print the usage.
+usage () {
+ cat <<EOF
+Usage: $0 [OPTION] entry
+Set the default boot entry for GRUB, for the next boot only.
+
+ -h, --help print this message and exit
+ -v, --version print the version information and exit
+ --root-directory DIR expect GRUB images under the directory DIR
+ instead of the root directory
+
+ENTRY is a number or a menu item title.
+
+Report bugs to <bug-g...@gnu.org>.
+EOF
+}
+
+# Check the arguments.
+for option in "$@"; do
+ case "$option" in
+ -h | --help)
+ usage
+ exit 0 ;;
+ -v | --version)
+ echo "grub-install (GNU GRUB ${PACKAGE_VERSION})"
+ exit 0 ;;
+ --root-directory=*)
+ rootdir=`echo "$option" | sed 's/--root-directory=//'` ;;
+ -*)
+ echo "Unrecognized option \`$option'" 1>&2
+ usage
+ exit 1
+ ;;
+ *)
+ if test "x$entry" != x; then
+ echo "More than one entry?" 1>&2
+ usage
+ exit 1
+ fi
+ entry="${option}" ;;
+ esac
+done
+
+if test "x$entry" = x; then
+ echo "entry not specified." 1>&2
+ usage
+ exit 1
+fi
+
+# Initialize these directories here, since ROOTDIR was initialized.
+case "$host_os" in
+netbsd* | openbsd*)
+ # Because /boot is used for the boot block in NetBSD and OpenBSD, use /grub
+ # instead of /boot/grub.
+ grub_prefix=`echo /grub | sed ${transform}`
+ bootdir=${rootdir}
+ ;;
+*)
+ # Use /boot/grub by default.
+ bootdir=${rootdir}/boot
+ ;;
+esac
+
+grubdir=${bootdir}/`echo grub | sed ${transform}`
+
+prev_saved_entry=`$grub_editenv ${grubdir}/grubenv list | sed -n
's/^saved_entry=//p'`
+if [ "$prev_saved_entry" ]; then
+ $grub_editenv ${grubdir}/grubenv set prev_saved_entry="$prev_saved_entry"
+else
+ $grub_editenv ${grubdir}/grubenv unset prev_saved_entry
+fi
+$grub_editenv ${grubdir}/grubenv set saved_entry="$entry"
+
+# Bye.
+exit 0
Index: util/grub-set-default.in
===================================================================
--- util/grub-set-default.in (revision 0)
+++ util/grub-set-default.in (revision 0)
@@ -0,0 +1,99 @@
+#! /bin/sh
+#
+# Set a default boot entry for GRUB.
+# Copyright (C) 2004,2009 Free Software Foundation, Inc.
+#
+# GRUB is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# GRUB is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+
+# Initialize some variables.
+transform="@program_transform_name@"
+
+pref...@prefix@
+exec_pref...@exec_prefix@
+bind...@bindir@
+
+grub_editenv=${bindir}/`echo grub-editenv | sed ${transform}`
+rootdir=
+
+# Usage: usage
+# Print the usage.
+usage () {
+ cat <<EOF
+Usage: $0 [OPTION] entry
+Set the default boot entry for GRUB.
+
+ -h, --help print this message and exit
+ -v, --version print the version information and exit
+ --root-directory DIR expect GRUB images under the directory DIR
+ instead of the root directory
+
+ENTRY is a number or a menu item title.
+
+Report bugs to <bug-g...@gnu.org>.
+EOF
+}
+
+# Check the arguments.
+for option in "$@"; do
+ case "$option" in
+ -h | --help)
+ usage
+ exit 0 ;;
+ -v | --version)
+ echo "grub-install (GNU GRUB ${PACKAGE_VERSION})"
+ exit 0 ;;
+ --root-directory=*)
+ rootdir=`echo "$option" | sed 's/--root-directory=//'` ;;
+ -*)
+ echo "Unrecognized option \`$option'" 1>&2
+ usage
+ exit 1
+ ;;
+ *)
+ if test "x$entry" != x; then
+ echo "More than one entry?" 1>&2
+ usage
+ exit 1
+ fi
+ entry="${option}" ;;
+ esac
+done
+
+if test "x$entry" = x; then
+ echo "entry not specified." 1>&2
+ usage
+ exit 1
+fi
+
+# Initialize these directories here, since ROOTDIR was initialized.
+case "$host_os" in
+netbsd* | openbsd*)
+ # Because /boot is used for the boot block in NetBSD and OpenBSD, use /grub
+ # instead of /boot/grub.
+ grub_prefix=`echo /grub | sed ${transform}`
+ bootdir=${rootdir}
+ ;;
+*)
+ # Use /boot/grub by default.
+ bootdir=${rootdir}/boot
+ ;;
+esac
+
+grubdir=${bootdir}/`echo grub | sed ${transform}`
+
+$grub_editenv ${grubdir}/grubenv unset prev_saved_entry
+$grub_editenv ${grubdir}/grubenv set saved_entry="$entry"
+
+# Bye.
+exit 0
Index: util/grub.d/10_freebsd.in
===================================================================
--- util/grub.d/10_freebsd.in (revision 2561)
+++ util/grub.d/10_freebsd.in (working copy)
@@ -58,6 +58,7 @@
cat << EOF
menuentry "${OS}" {
EOF
+ save_default_entry | sed -e "s/^/\t/"
prepare_grub_to_access_device ${GRUB_DEVICE_BOOT} | sed -e "s/^/\t/"
cat << EOF
freebsd ${kfreebsd_rel_dirname}/${kfreebsd_basename}
Index: util/grub.d/10_windows.in
===================================================================
--- util/grub.d/10_windows.in (revision 2561)
+++ util/grub.d/10_windows.in (working copy)
@@ -73,6 +73,7 @@
menuentry "$OS" {
EOF
+ save_default_entry | sed -e 's,^,\t,'
prepare_grub_to_access_device "$dev" | sed 's,^,\t,'
cat << EOF
Index: util/grub.d/30_os-prober.in
===================================================================
--- util/grub.d/30_os-prober.in (revision 2561)
+++ util/grub.d/30_os-prober.in (working copy)
@@ -55,6 +55,7 @@
cat << EOF
menuentry "${LONGNAME} (on ${DEVICE})" {
EOF
+ save_default_entry | sed -e "s/^/\t/"
prepare_grub_to_access_device ${DEVICE} | sed -e "s/^/\t/"
if [ "${LONGNAME}" != "Windows Vista (loader)" ] ; then
@@ -85,6 +86,7 @@
cat << EOF
menuentry "${LLABEL} (on ${DEVICE})" {
EOF
+ save_default_entry | sed -e "s/^/\t/"
prepare_grub_to_access_device ${DEVICE} | sed -e "s/^/\t/"
cat << EOF
linux ${LKERNEL} ${LPARAMS}
@@ -104,6 +106,7 @@
cat << EOF
menuentry "${LONGNAME} (on ${DEVICE})" {
EOF
+ save_default_entry | sed -e "s/^/\t/"
prepare_grub_to_access_device ${DEVICE} | sed -e "s/^/\t/"
cat << EOF
insmod vbe
Index: util/grub.d/10_linux.in
===================================================================
--- util/grub.d/10_linux.in (revision 2561)
+++ util/grub.d/10_linux.in (working copy)
@@ -47,6 +47,7 @@
cat << EOF
menuentry "$1" {
EOF
+ save_default_entry | sed -e "s/^/\t/"
prepare_grub_to_access_device ${GRUB_DEVICE_BOOT} | sed -e "s/^/\t/"
cat << EOF
linux ${rel_dirname}/${basename}
root=${linux_root_device_thisversion} ro $2
Index: util/grub.d/10_hurd.in
===================================================================
--- util/grub.d/10_hurd.in (revision 2561)
+++ util/grub.d/10_hurd.in (working copy)
@@ -71,6 +71,7 @@
cat << EOF
menuentry "${OS}" {
EOF
+save_default_entry | sed -e "s/^/\t/"
prepare_grub_to_access_device ${GRUB_DEVICE} | sed -e "s/^/\t/"
cat << EOF
multiboot ${kernel} root=device:${GRUB_DEVICE}
Index: util/grub.d/00_header.in
===================================================================
--- util/grub.d/00_header.in (revision 2561)
+++ util/grub.d/00_header.in (working copy)
@@ -32,11 +32,17 @@
done
if [ "x${GRUB_DEFAULT}" = "x" ] ; then GRUB_DEFAULT=0 ; fi
+if [ "x${GRUB_DEFAULT}" = "xsaved" ] ; then GRUB_DEFAULT='${saved_entry}' ; fi
if [ "x${GRUB_TIMEOUT}" = "x" ] ; then GRUB_TIMEOUT=5 ; fi
if [ "x${GRUB_GFXMODE}" = "x" ] ; then GRUB_GFXMODE=640x480 ; fi
cat << EOF
+load_env
set default=${GRUB_DEFAULT}
+if [ \${prev_saved_entry} ]; then
+ save_env saved_entry=\${prev_saved_entry}
+ save_env prev_saved_entry=
+fi
EOF
case ${GRUB_TERMINAL_INPUT}:${GRUB_TERMINAL_OUTPUT} in
Index: util/i386/pc/grub-install.in
===================================================================
--- util/i386/pc/grub-install.in (revision 2561)
+++ util/i386/pc/grub-install.in (working copy)
@@ -39,6 +39,7 @@
fi
grub_mkdevicemap=${sbindir}/`echo grub-mkdevicemap | sed ${transform}`
grub_probe=${sbindir}/`echo grub-probe | sed ${transform}`
+grub_editenv=${bindir}/`echo grub-editenv | sed ${transform}`
rootdir=
grub_prefix=`echo /boot/grub | sed ${transform}`
modules=
@@ -247,6 +248,10 @@
done
fi
+if ! test -f ${grubdir}/grubenv; then
+ $grub_editenv ${grubdir}/grubenv create
+fi
+
# Write device to a variable so we don't have to traverse /dev every time.
grub_device=`$grub_probe --target=device ${grubdir}`
Index: util/i386/efi/grub-install.in
===================================================================
--- util/i386/efi/grub-install.in (revision 2561)
+++ util/i386/efi/grub-install.in (working copy)
@@ -34,6 +34,7 @@
grub_mkimage=${bindir}/`echo grub-mkimage | sed ${transform}`
grub_mkdevicemap=${sbindir}/`echo grub-mkdevicemap | sed ${transform}`
grub_probe=${sbindir}/`echo grub-probe | sed ${transform}`
+grub_editenv=${bindir}/`echo grub-editenv | sed ${transform}`
rootdir=
grub_prefix=`echo /boot/grub | sed ${transform}`
modules=
@@ -178,6 +179,10 @@
cp -f $file ${grubdir} || exit 1
done
+if ! test -f ${grubdir}/grubenv; then
+ $grub_editenv ${grubdir}/grubenv create
+fi
+
# Create the core image. First, auto-detect the filesystem module.
fs_module=`$grub_probe --target=fs --device-map=${device_map} ${grubdir}`
if test "x$fs_module" = xfat; then :; else
Index: util/ieee1275/grub-install.in
===================================================================
--- util/ieee1275/grub-install.in (revision 2561)
+++ util/ieee1275/grub-install.in (working copy)
@@ -37,6 +37,7 @@
grub_mkimage=${bindir}/`echo grub-mkelfimage | sed ${transform}`
grub_mkdevicemap=${sbindir}/`echo grub-mkdevicemap | sed ${transform}`
grub_probe=${sbindir}/`echo grub-probe | sed ${transform}`
+grub_editenv=${bindir}/`echo grub-editenv | sed ${transform}`
rootdir=
grub_prefix=`echo /boot/grub | sed ${transform}`
modules=
@@ -163,6 +164,10 @@
cp -f $file ${grubdir} || exit 1
done
+if ! test -f ${grubdir}/grubenv; then
+ $grub_editenv ${grubdir}/grubenv create
+fi
+
# Create the core image. First, auto-detect the filesystem module.
fs_module=`$grub_probe --target=fs --device-map=${device_map} ${grubdir}`
if test "x$fs_module" = x -a "x$modules" = x; then
Index: util/sparc64/ieee1275/grub-install.in
===================================================================
--- util/sparc64/ieee1275/grub-install.in (revision 2561)
+++ util/sparc64/ieee1275/grub-install.in (working copy)
@@ -35,6 +35,7 @@
grub_mkimage=${bindir}/`echo grub-mkimage | sed ${transform}`
grub_mkdevicemap=${sbindir}/`echo grub-mkdevicemap | sed ${transform}`
grub_probe=${sbindir}/`echo grub-probe | sed ${transform}`
+grub_editenv=${bindir}/`echo grub-editenv | sed ${transform}`
rootdir=
grub_prefix=`echo /boot/grub | sed ${transform}`
modules=
@@ -206,6 +207,10 @@
cp -f $file ${grubdir} || exit 1
done
+if ! test -f ${grubdir}/grubenv; then
+ $grub_editenv ${grubdir}/grubenv create
+fi
+
# Write device to a variable so we don't have to traverse /dev every time.
grub_device=`$grub_probe --target=device ${grubdir}`
Index: conf/common.rmk
===================================================================
--- conf/common.rmk (revision 2561)
+++ conf/common.rmk (working copy)
@@ -175,6 +175,20 @@
sbin_SCRIPTS += grub-dumpbios
CLEANFILES += grub-dumpbios
+# For grub-set-default.
+grub-set-default: util/grub-set-default.in config.status
+ ./config.status --file=$@:$<
+ chmod +x $@
+sbin_SCRIPTS += grub-set-default
+CLEANFILES += grub-set-default
+
+# For grub-reboot.
+grub-reboot: util/grub-reboot.in config.status
+ ./config.status --file=$@:$<
+ chmod +x $@
+sbin_SCRIPTS += grub-reboot
+CLEANFILES += grub-reboot
+
# Filing systems.
pkglib_MODULES += fshelp.mod fat.mod ufs1.mod ufs2.mod ext2.mod ntfs.mod \
ntfscomp.mod minix.mod hfs.mod jfs.mod iso9660.mod xfs.mod \
--
Colin Watson [cjwat...@ubuntu.com]
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