Skip to content

Commit 09e416b

Browse files
IComplainInCommentsIComplainInComments
committed
Working ISO build
Mostly Working ISO build
1 parent b1982bc commit 09e416b

27 files changed

+850
-306
lines changed

‎configs/aarch64/airootfs/etc/initcpio/archiso_shutdown

Lines changed: 41 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,41 @@
1+
#!/bin/ash
2+
#
3+
# SPDX-License-Identifier: GPL-3.0-or-later
4+
5+
# /oldroot depends on things inside /oldroot/run/archiso...
6+
mkdir /oldrun
7+
mount -n --move /oldroot/run /oldrun
8+
9+
# Unmount all mounts now.
10+
umount "$(mount | awk '$3 ~/^\/oldroot/ {print $3}' | sort -r)"
11+
12+
# Remove all dm-snapshot devices.
13+
dmsetup remove_all
14+
15+
# Remove all loopback devices.
16+
for _lup in $(grep ^/dev/loop /oldrun/archiso/used_block_devices | tac); do
17+
if ! losetup -d -- "${_lup}" 2> /dev/null; then
18+
umount -d -- "${_lup}"
19+
fi
20+
done
21+
22+
# Unmount the space used to store *.cow.
23+
umount /oldrun/archiso/cowspace
24+
25+
# Unmount boot device if needed (no copytoram=y used)
26+
if [ ! -d /oldrun/archiso/copytoram ]; then
27+
if [ -d /oldrun/archiso/img_dev ]; then
28+
umount /oldrun/archiso/img_dev
29+
else
30+
umount /oldrun/archiso/bootmnt
31+
fi
32+
fi
33+
34+
# reboot / poweroff / halt, depending on the argument passed by init
35+
# if something invalid is passed, we halt
36+
case "$1" in
37+
reboot|poweroff|halt) "$1" -f ;;
38+
*) halt -f;;
39+
esac
40+
41+
# vim: set ft=sh:

‎configs/aarch64/airootfs/etc/initcpio/hooks/archiso

Lines changed: 272 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,272 @@
1+
#!/bin/ash
2+
#
3+
# SPDX-License-Identifier: GPL-3.0-or-later
4+
5+
# args: source, newroot, mountpoint
6+
_mnt_dmsnapshot() {
7+
local img="${1}"
8+
local newroot="${2}"
9+
local mnt="${3}"
10+
local img_fullname="${img##*/}";
11+
local img_name="${img_fullname%%.*}"
12+
local dm_snap_name="${dm_snap_prefix}_${img_name}"
13+
local ro_dev ro_dev_size rw_dev
14+
15+
ro_dev="$(losetup --find --show --read-only -- "${img}")"
16+
echo "${ro_dev}" >> /run/archiso/used_block_devices
17+
ro_dev_size="$(blockdev --getsz "${ro_dev}")"
18+
19+
if [ "${cow_persistent}" = "P" ]; then
20+
if [ -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow" ]; then
21+
msg ":: Found '/run/archiso/cowspace/${cow_directory}/${img_name}.cow', using as persistent."
22+
else
23+
msg ":: Creating '/run/archiso/cowspace/${cow_directory}/${img_name}.cow' as persistent."
24+
truncate -s "${cow_spacesize}" "/run/archiso/cowspace/${cow_directory}/${img_name}.cow"
25+
fi
26+
else
27+
if [ -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow" ]; then
28+
msg ":: Found '/run/archiso/cowspace/${cow_directory}/${img_name}.cow' but non-persistent requested, removing."
29+
rm -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow"
30+
fi
31+
msg ":: Creating '/run/archiso/cowspace/${cow_directory}/${img_name}.cow' as non-persistent."
32+
truncate -s "${cow_spacesize}" "/run/archiso/cowspace/${cow_directory}/${img_name}.cow"
33+
fi
34+
35+
rw_dev="$(losetup --find --show "/run/archiso/cowspace/${cow_directory}/${img_name}.cow")"
36+
echo "${rw_dev}" >> /run/archiso/used_block_devices
37+
38+
dmsetup create "${dm_snap_name}" --table \
39+
"0 ${ro_dev_size} snapshot ${ro_dev} ${rw_dev} ${cow_persistent} ${cow_chunksize}"
40+
41+
if [ "${cow_persistent}" != "P" ]; then
42+
rm -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow"
43+
fi
44+
45+
_mnt_dev "/dev/mapper/${dm_snap_name}" "${newroot}${mnt}" "-w" "defaults"
46+
readlink -f "/dev/mapper/${dm_snap_name}" >> /run/archiso/used_block_devices
47+
}
48+
49+
# args: source, newroot, mountpoint
50+
_mnt_overlayfs() {
51+
local src="${1}"
52+
local newroot="${2}"
53+
local mnt="${3}"
54+
mkdir -p "/run/archiso/cowspace/${cow_directory}/upperdir" "/run/archiso/cowspace/${cow_directory}/workdir"
55+
mount -t overlay -o \
56+
"lowerdir=${src},upperdir=/run/archiso/cowspace/${cow_directory}/upperdir,workdir=/run/archiso/cowspace/${cow_directory}/workdir" \
57+
airootfs "${newroot}${mnt}"
58+
}
59+
60+
61+
# args: /path/to/image_file, mountpoint
62+
_mnt_sfs() {
63+
local img="${1}"
64+
local mnt="${2}"
65+
local img_fullname="${img##*/}"
66+
local sfs_dev
67+
68+
# shellcheck disable=SC2154
69+
# defined via initcpio's parse_cmdline()
70+
if [ "${copytoram}" = "y" ]; then
71+
msg -n ":: Copying squashfs image to RAM..."
72+
if ! cp -- "${img}" "/run/archiso/copytoram/${img_fullname}" ; then
73+
echo "ERROR: while copy '${img}' to '/run/archiso/copytoram/${img_fullname}'"
74+
launch_interactive_shell
75+
fi
76+
img="/run/archiso/copytoram/${img_fullname}"
77+
msg "done."
78+
fi
79+
sfs_dev="$(losetup --find --show --read-only -- "${img}")"
80+
echo "${sfs_dev}" >> /run/archiso/used_block_devices
81+
_mnt_dev "${sfs_dev}" "${mnt}" "-r" "defaults"
82+
}
83+
84+
# args: /path/to/image_file, mountpoint
85+
_mnt_erofs() {
86+
local img="${1}"
87+
local mnt="${2}"
88+
local img_fullname="${img##*/}"
89+
local erofs_dev
90+
91+
# shellcheck disable=SC2154
92+
# defined via initcpio's parse_cmdline()
93+
if [ "${copytoram}" = "y" ]; then
94+
msg -n ":: Copying EROFS image to RAM..."
95+
if ! cp -- "${img}" "/run/archiso/copytoram/${img_fullname}" ; then
96+
echo "ERROR: while copy '${img}' to '/run/archiso/copytoram/${img_fullname}'"
97+
launch_interactive_shell
98+
fi
99+
img="/run/archiso/copytoram/${img_fullname}"
100+
msg "done."
101+
fi
102+
erofs_dev="$(losetup --find --show --read-only -- "${img}")"
103+
echo "${erofs_dev}" >> /run/archiso/used_block_devices
104+
_mnt_dev "${erofs_dev}" "${mnt}" "-r" "defaults" "erofs"
105+
}
106+
107+
# args: device, mountpoint, flags, opts
108+
_mnt_dev() {
109+
local dev="${1}"
110+
local mnt="${2}"
111+
local flg="${3}"
112+
local opts="${4}"
113+
local fstype="${5:-auto}"
114+
115+
mkdir -p "${mnt}"
116+
117+
msg ":: Mounting '${dev}' to '${mnt}'"
118+
119+
while ! poll_device "${dev}" 30; do
120+
echo "ERROR: '${dev}' device did not show up after 30 seconds..."
121+
echo " Falling back to interactive prompt"
122+
echo " You can try to fix the problem manually, log out when you are finished"
123+
launch_interactive_shell
124+
done
125+
126+
if mount -t "${fstype}" -o "${opts}" "${flg}" "${dev}" "${mnt}"; then
127+
msg ":: Device '${dev}' mounted successfully."
128+
else
129+
echo "ERROR; Failed to mount '${dev}'"
130+
echo " Falling back to interactive prompt"
131+
echo " You can try to fix the problem manually, log out when you are finished"
132+
launch_interactive_shell
133+
fi
134+
}
135+
136+
_verify_checksum() {
137+
local _status
138+
cd "/run/archiso/bootmnt/${archisobasedir}/${arch}" || exit 1
139+
sha512sum -c airootfs.sha512 > /tmp/checksum.log 2>&1
140+
_status=$?
141+
cd -- "${OLDPWD}" || exit 1
142+
return "${_status}"
143+
}
144+
145+
_verify_signature() {
146+
local _status
147+
local sigfile="${1}"
148+
cd "/run/archiso/bootmnt/${archisobasedir}/${arch}" || exit 1
149+
gpg --homedir /gpg --status-fd 1 --verify "${sigfile}" 2>/dev/null | grep -qE '^\[GNUPG:\] GOODSIG'
150+
_status=$?
151+
cd -- "${OLDPWD}" || exit 1
152+
return ${_status}
153+
}
154+
155+
run_hook() {
156+
[ -z "${arch}" ] && arch="$(uname -m)"
157+
[ -z "${copytoram_size}" ] && copytoram_size="75%"
158+
[ -z "${archisobasedir}" ] && archisobasedir="arch"
159+
[ -z "${dm_snap_prefix}" ] && dm_snap_prefix="arch"
160+
# shellcheck disable=SC2154
161+
# defined via initcpio's parse_cmdline()
162+
[ -z "${archisodevice}" ] && archisodevice="/dev/disk/by-label/${archisolabel}"
163+
[ -z "${cow_spacesize}" ] && cow_spacesize="256M"
164+
# shellcheck disable=SC2154
165+
# defined via initcpio's parse_cmdline()
166+
if [ -n "${cow_label}" ]; then
167+
cow_device="/dev/disk/by-label/${cow_label}"
168+
[ -z "${cow_persistent}" ] && cow_persistent="P"
169+
elif [ -n "${cow_device}" ]; then
170+
[ -z "${cow_persistent}" ] && cow_persistent="P"
171+
else
172+
cow_persistent="N"
173+
fi
174+
175+
[ -z "${cow_flags}" ] && cow_flags="defaults"
176+
[ -z "${cow_directory}" ] && cow_directory="persistent_${archisolabel}/${arch}"
177+
[ -z "${cow_chunksize}" ] && cow_chunksize="8"
178+
179+
# set mount handler for archiso
180+
export mount_handler="archiso_mount_handler"
181+
}
182+
183+
# This function is called normally from init script, but it can be called
184+
# as chain from other mount handlers.
185+
# args: /path/to/newroot
186+
archiso_mount_handler() {
187+
local newroot="${1}"
188+
local sigfile
189+
190+
if ! mountpoint -q "/run/archiso/bootmnt"; then
191+
_mnt_dev "${archisodevice}" "/run/archiso/bootmnt" "-r" "defaults"
192+
if [ "${copytoram}" != "y" ]; then
193+
readlink -f "${archisodevice}" >> /run/archiso/used_block_devices
194+
fi
195+
fi
196+
197+
# shellcheck disable=SC2154
198+
# defined via initcpio's parse_cmdline()
199+
if [ "${checksum}" = "y" ]; then
200+
if [ -f "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.sha512" ]; then
201+
msg -n ":: Self-test requested, please wait..."
202+
if _verify_checksum; then
203+
msg "done. Checksum is OK, continue booting."
204+
else
205+
echo "ERROR: one or more files are corrupted"
206+
echo "see /tmp/checksum.log for details"
207+
launch_interactive_shell
208+
fi
209+
else
210+
echo "ERROR: checksum=y option specified but ${archisobasedir}/${arch}/airootfs.sha512 not found"
211+
launch_interactive_shell
212+
fi
213+
fi
214+
215+
# shellcheck disable=SC2154
216+
# defined via initcpio's parse_cmdline()
217+
if [ "${verify}" = "y" ]; then
218+
if [ -f "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.sfs.sig" ]; then
219+
sigfile="airootfs.sfs.sig"
220+
elif [ -f "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.erofs.sig" ]; then
221+
sigfile="airootfs.erofs.sig"
222+
fi
223+
if [ -n "${sigfile}" ]; then
224+
msg -n ":: Signature verification requested, please wait..."
225+
if _verify_signature "${sigfile}"; then
226+
msg "done. Signature is OK, continue booting."
227+
else
228+
echo "ERROR: one or more files are corrupted"
229+
launch_interactive_shell
230+
fi
231+
else
232+
echo "ERROR: verify=y option specified but GPG signature not found in ${archisobasedir}/${arch}/"
233+
launch_interactive_shell
234+
fi
235+
fi
236+
237+
if [ "${copytoram}" = "y" ]; then
238+
msg ":: Mounting /run/archiso/copytoram (tmpfs) filesystem, size=${copytoram_size}"
239+
mkdir -p /run/archiso/copytoram
240+
mount -t tmpfs -o "size=${copytoram_size}",mode=0755 copytoram /run/archiso/copytoram
241+
fi
242+
243+
if [ -n "${cow_device}" ]; then
244+
_mnt_dev "${cow_device}" "/run/archiso/cowspace" "-r" "${cow_flags}"
245+
readlink -f "${cow_device}" >> /run/archiso/used_block_devices
246+
mount -o remount,rw "/run/archiso/cowspace"
247+
else
248+
msg ":: Mounting /run/archiso/cowspace (tmpfs) filesystem, size=${cow_spacesize}..."
249+
mkdir -p /run/archiso/cowspace
250+
mount -t tmpfs -o "size=${cow_spacesize}",mode=0755 cowspace /run/archiso/cowspace
251+
fi
252+
mkdir -p "/run/archiso/cowspace/${cow_directory}"
253+
chmod 0700 "/run/archiso/cowspace/${cow_directory}"
254+
255+
if [ -f "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.sfs" ]; then
256+
_mnt_sfs "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.sfs" "/run/archiso/airootfs"
257+
elif [ -f "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.erofs" ]; then
258+
_mnt_erofs "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.erofs" "/run/archiso/airootfs"
259+
fi
260+
if [ -f "/run/archiso/airootfs/airootfs.img" ]; then
261+
_mnt_dmsnapshot "/run/archiso/airootfs/airootfs.img" "${newroot}" "/"
262+
else
263+
_mnt_overlayfs "/run/archiso/airootfs" "${newroot}" "/"
264+
fi
265+
266+
if [ "${copytoram}" = "y" ]; then
267+
umount -d /run/archiso/bootmnt
268+
rmdir /run/archiso/bootmnt
269+
fi
270+
}
271+
272+
# vim: set ft=sh:

‎configs/aarch64/airootfs/etc/initcpio/hooks/archiso_loop_mnt

Lines changed: 45 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,45 @@
1+
#!/bin/ash
2+
#
3+
# SPDX-License-Identifier: GPL-3.0-or-later
4+
5+
run_hook () {
6+
# shellcheck disable=SC2154
7+
# defined via initcpio's parse_cmdline()
8+
[ -n "${img_label}" ] && img_dev="/dev/disk/by-label/${img_label}"
9+
[ -z "${img_flags}" ] && img_flags="defaults"
10+
# shellcheck disable=SC2154
11+
# defined via initcpio's parse_cmdline()
12+
if [ -n "${img_dev}" ] && [ -n "${img_loop}" ]; then
13+
export mount_handler="archiso_loop_mount_handler"
14+
fi
15+
}
16+
17+
archiso_loop_mount_handler () {
18+
newroot="${1}"
19+
20+
local _dev_loop
21+
22+
msg ":: Setup a loop device from ${img_loop} located at device ${img_dev}"
23+
_mnt_dev "${img_dev}" "/run/archiso/img_dev" "-r" "${img_flags}"
24+
# shellcheck disable=SC2154
25+
# defined via initcpio's parse_cmdline()
26+
if [ "${copytoram}" != "y" ]; then
27+
readlink -f "${img_dev}" >> /run/archiso/used_block_devices
28+
fi
29+
30+
if _dev_loop=$(losetup --find --show --read-only "/run/archiso/img_dev/${img_loop}"); then
31+
export archisodevice="${_dev_loop}"
32+
else
33+
echo "ERROR: Setting loopback device for file '/run/archiso/img_dev/${img_loop}'"
34+
launch_interactive_shell
35+
fi
36+
37+
archiso_mount_handler "${newroot}"
38+
39+
if [ "${copytoram}" = "y" ]; then
40+
losetup -d "${_dev_loop}" 2>/dev/null
41+
umount /run/archiso/img_dev
42+
fi
43+
}
44+
45+
# vim: set ft=sh:

0 commit comments

Comments
 (0)