1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
# vim: filetype=sh
# grub configuration
# ------------------
# let grub find our virtual device
update_grup_device_map()
{
cd /
mkdir -p boot/grub
cat > boot/grub/device.map << END_MAP
(hd0) $loop_device
END_MAP
cd - >/dev/null
}
# * customize boot parameters
# * fix obsolete options in /etc/default/grub
# (https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1258597)
update_grub_conf()
{
. /etc/default/grub
existing_bootargs="$GRUB_CMDLINE_LINUX"
recommended_bootargs="rootdelay=3"
user_bootargs="$@"
# order of precedence is:
# user_bootargs > recommended_bootargs > existing_bootargs
# In the case of grub, we add bootargs to grub's GRUB_CMDLINE_LINUX variable.
# However, when deleting a bootarg, it may actually be in GRUB_CMDLINE_LINUX_DEFAULT too.
GRUB_CMDLINE_LINUX="$(aggregate_kernel_cmdline $existing_bootargs $recommended_bootargs $user_bootargs)"
only_minus_modifiers="$(echo "$user_bootargs" | tr ' ' '\n' | happy_grep '^-')"
GRUB_CMDLINE_LINUX_DEFAULT="$(aggregate_kernel_cmdline $GRUB_CMDLINE_LINUX_DEFAULT $only_minus_modifiers)"
sed -i -e "s/GRUB_CMDLINE_LINUX=.*/GRUB_CMDLINE_LINUX=\"$GRUB_CMDLINE_LINUX\"/" \
-e "s/GRUB_CMDLINE_LINUX_DEFAULT=.*/GRUB_CMDLINE_LINUX_DEFAULT=\"$GRUB_CMDLINE_LINUX_DEFAULT\"/" \
-e "s/^GRUB_HIDDEN/#GRUB_HIDDEN/g" \
/etc/default/grub
# unless already specified, set GRUB_DISABLE_OS_PROBER to true
# otherwise update-grub may detect and install boot entries of the host machine
# while debootstick is building the draft image.
if [ "$GRUB_DISABLE_OS_PROBER" = "" ]
then
echo >> /etc/default/grub
echo "GRUB_DISABLE_OS_PROBER=true" >> /etc/default/grub
fi
# let the user know which bootargs where finally selected
applied_kernel_cmdline=$(aggregate_kernel_cmdline $GRUB_CMDLINE_LINUX $GRUB_CMDLINE_LINUX_DEFAULT)
}
# display the grub interface on serial line
update_grub_conf_serial_line()
{
cat >> ./etc/default/grub << EOF
GRUB_TERMINAL=serial
GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"
EOF
}
get_grub_arch() {
case "$(get_target_cpu "/")" in
"amd64")
echo "x86_64"
;;
"i386")
echo "i386"
;;
esac
}
grub_install_uefi()
{
arch=$(get_grub_arch)
options="--target=${arch}-efi --uefi-secure-boot --no-nvram"
if grub-install --help | grep -q force-extra-removable
then
options="$options --force-extra-removable"
fi
grub-install $options
}
grub_install_bios()
{
grub-install "$1"
}
smart_update_initramfs()
{
# initramfs files may be big, so when regenerating a new version
# of the file with "update-initramfs -u", there may be an error
# because of missing space.
# here we remove the previous version of the file before generating
# the new version.
initramfs_file=$(ls /boot | grep 'initrd.img-')
kernel_version=$(echo "$initramfs_file" | sed -e 's/initrd.img-//')
rm -f "/boot/$initramfs_file"
update-initramfs -c -k "$kernel_version"
}
quiet_grub_install()
{
device=$1
update_grup_device_map $device
# grub-install & update-grub print messages to standard
# error stream although most of these are just
# informational (or minor bugs). Let's discard them.
output="$(
grub_install_uefi 2>&1 && \
grub_install_bios $device 2>&1 && \
smart_update_initramfs 2>&1 && \
update-grub 2>&1
)" || return_code=$?
echo "$output" | happy_grep -v "No error" | \
happy_grep -v "Installing" | \
happy_grep -v "Generating" | \
happy_grep -v "Found .* image:" | \
happy_grep -v "lvmetad" | \
happy_grep -v "etc.modprobe.d" | \
happy_grep -v "leaked on" | \
happy_grep -v "^Sourcing file" | \
happy_grep -v "^Warning: os-prober" | \
happy_grep -v "^Systems on them" | \
happy_grep -v "^Check GRUB_DISABLE" | \
happy_grep -v "using gzip" | \
happy_grep -v "^done$" 1>&2
# the return value we want is the one we caught
# earlier (or none if all went well):
return $return_code
}
configure_bootloader()
{
# tune grub conf
update_grub_conf $kernel_bootargs
if [ "$config_grub_on_serial_line" -gt 0 ]
then
update_grub_conf_serial_line
fi
# disable quickboot:
# work around grub displaying error message with our LVM setup
# disable vt_handoff:
# the linux console should be visible during startup (especially
# if we must enter the root password, or in installer-mode), do
# not switch to vt7.
# note: even if the file etc/grub.d/10_linux is re-created
# after an upgrade of the package grub-common, our script
# 09_linux_custom will be executed first and take precedence.
sed -i -e 's/quick_boot=.*/quick_boot=0/' \
-e 's/vt_handoff=.*/vt_handoff=0/' etc/grub.d/10_linux
mv etc/grub.d/10_linux etc/grub.d/09_linux_custom
}
install_bootloader()
{
quiet_grub_install $loop_device
}
|
