1 # args: source, newroot, mountpoint
6 local img_fullname="${img##*/}";
7 local img_name="${img_fullname%%.*}"
8 local dm_snap_name="${dm_snap_prefix}_${img_name}"
9 local ro_dev ro_dev_size rw_dev
11 ro_dev=$(losetup --find --show --read-only "${img}")
12 echo ${ro_dev} >> /run/archiso/used_block_devices
13 ro_dev_size=$(blockdev --getsz ${ro_dev})
15 if [[ "${cow_persistent}" == "P" ]]; then
16 if [[ -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow" ]]; then
17 msg ":: Found '/run/archiso/cowspace/${cow_directory}/${img_name}.cow', using as persistent."
19 msg ":: Creating '/run/archiso/cowspace/${cow_directory}/${img_name}.cow' as persistent."
20 truncate -s "${cow_spacesize}" "/run/archiso/cowspace/${cow_directory}/${img_name}.cow"
23 if [[ -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow" ]]; then
24 msg ":: Found '/run/archiso/cowspace/${cow_directory}/${img_name}.cow' but non-persistent requested, removing."
25 rm -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow"
27 msg ":: Creating '/run/archiso/cowspace/${cow_directory}/${img_name}.cow' as non-persistent."
28 truncate -s "${cow_spacesize}" "/run/archiso/cowspace/${cow_directory}/${img_name}.cow"
31 rw_dev=$(losetup --find --show "/run/archiso/cowspace/${cow_directory}/${img_name}.cow")
32 echo ${rw_dev} >> /run/archiso/used_block_devices
34 dmsetup create ${dm_snap_name} --table "0 ${ro_dev_size} snapshot ${ro_dev} ${rw_dev} ${cow_persistent} ${cow_chunksize}"
36 if [[ "${cow_persistent}" != "P" ]]; then
37 rm -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow"
40 _mnt_dev "/dev/mapper/${dm_snap_name}" "${newroot}${mnt}" "-w" "defaults"
41 echo $(readlink -f /dev/mapper/${dm_snap_name}) >> /run/archiso/used_block_devices
44 # args: source, newroot, mountpoint
49 mkdir -p /run/archiso/cowspace/${cow_directory}/upperdir /run/archiso/cowspace/${cow_directory}/workdir
50 mount -t overlay -o lowerdir=${src},upperdir=/run/archiso/cowspace/${cow_directory}/upperdir,workdir=/run/archiso/cowspace/${cow_directory}/workdir airootfs "${newroot}${mnt}"
54 # args: /path/to/image_file, mountpoint
58 local img_fullname="${img##*/}"
61 if [[ "${copytoram}" == "y" ]]; then
62 msg -n ":: Copying squashfs image to RAM..."
63 if ! cp "${img}" "/run/archiso/copytoram/${img_fullname}" ; then
64 echo "ERROR: while copy '${img}' to '/run/archiso/copytoram/${img_fullname}'"
65 launch_interactive_shell
67 img="/run/archiso/copytoram/${img_fullname}"
70 sfs_dev=$(losetup --find --show --read-only "${img}")
71 echo ${sfs_dev} >> /run/archiso/used_block_devices
72 _mnt_dev "${sfs_dev}" "${mnt}" "-r" "defaults"
75 # args: device, mountpoint, flags, opts
84 msg ":: Mounting '${dev}' to '${mnt}'"
86 while ! poll_device "${dev}" 30; do
87 echo "ERROR: '${dev}' device did not show up after 30 seconds..."
88 echo " Falling back to interactive prompt"
89 echo " You can try to fix the problem manually, log out when you are finished"
90 launch_interactive_shell
93 if mount -o "${opts}" "${flg}" "${dev}" "${mnt}"; then
94 msg ":: Device '${dev}' mounted successfully."
96 echo "ERROR; Failed to mount '${dev}'"
97 echo " Falling back to interactive prompt"
98 echo " You can try to fix the problem manually, log out when you are finished"
99 launch_interactive_shell
105 cd "/run/archiso/bootmnt/${archisobasedir}/${arch}"
106 sha512sum -c airootfs.sha512 > /tmp/checksum.log 2>&1
112 _verify_signature() {
114 cd "/run/archiso/bootmnt/${archisobasedir}/${arch}"
115 gpg --homedir /gpg --status-fd 1 --verify airootfs.sfs.sig 2>/dev/null | grep -qE '^\[GNUPG:\] GOODSIG'
122 [[ -z "${arch}" ]] && arch="$(uname -m)"
123 [[ -z "${copytoram_size}" ]] && copytoram_size="75%"
124 [[ -z "${archisobasedir}" ]] && archisobasedir="arch"
125 [[ -z "${dm_snap_prefix}" ]] && dm_snap_prefix="arch"
126 [[ -z "${archisodevice}" ]] && archisodevice="/dev/disk/by-label/${archisolabel}"
127 [[ -z "${cow_spacesize}" ]] && cow_spacesize="310M"
129 if [[ -n "${cow_label}" ]]; then
130 cow_device="/dev/disk/by-label/${cow_label}"
131 [[ -z "${cow_persistent}" ]] && cow_persistent="P"
132 elif [[ -n "${cow_device}" ]]; then
133 [[ -z "${cow_persistent}" ]] && cow_persistent="P"
138 [[ -z "${cow_flags}" ]] && cow_flags="defaults"
139 [[ -z "${cow_directory}" ]] && cow_directory="persistent_${archisolabel}/${arch}"
140 [[ -z "${cow_chunksize}" ]] && cow_chunksize="8"
142 # set mount handler for archiso
143 mount_handler="archiso_mount_handler"
146 # This function is called normally from init script, but it can be called
147 # as chain from other mount handlers.
148 # args: /path/to/newroot
149 archiso_mount_handler() {
152 if ! mountpoint -q "/run/archiso/bootmnt"; then
153 _mnt_dev "${archisodevice}" "/run/archiso/bootmnt" "-r" "defaults"
154 if [[ "${copytoram}" != "y" ]]; then
155 echo $(readlink -f ${archisodevice}) >> /run/archiso/used_block_devices
159 if [[ "${checksum}" == "y" ]]; then
160 if [[ -f "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.sha512" ]]; then
161 msg -n ":: Self-test requested, please wait..."
162 if _verify_checksum; then
163 msg "done. Checksum is OK, continue booting."
165 echo "ERROR: one or more files are corrupted"
166 echo "see /tmp/checksum.log for details"
167 launch_interactive_shell
170 echo "ERROR: checksum=y option specified but ${archisobasedir}/${arch}/airootfs.sha512 not found"
171 launch_interactive_shell
175 if [[ "${verify}" == "y" ]]; then
176 if [[ -f "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.sfs.sig" ]]; then
177 msg -n ":: Signature verification requested, please wait..."
178 if _verify_signature; then
179 msg "done. Signature is OK, continue booting."
181 echo "ERROR: one or more files are corrupted"
182 launch_interactive_shell
185 echo "ERROR: verify=y option specified but ${archisobasedir}/${arch}/airootfs.sfs.sig not found"
186 launch_interactive_shell
190 if [[ "${copytoram}" == "y" ]]; then
191 msg ":: Mounting /run/archiso/copytoram (tmpfs) filesystem, size=${copytoram_size}"
192 mkdir -p /run/archiso/copytoram
193 mount -t tmpfs -o "size=${copytoram_size}",mode=0755 copytoram /run/archiso/copytoram
196 if [[ -n "${cow_device}" ]]; then
197 _mnt_dev "${cow_device}" "/run/archiso/cowspace" "-r" "${cow_flags}"
198 echo $(readlink -f ${cow_device}) >> /run/archiso/used_block_devices
199 mount -o remount,rw "/run/archiso/cowspace"
201 msg ":: Mounting /run/archiso/cowspace (tmpfs) filesystem, size=${cow_spacesize}..."
202 mkdir -p /run/archiso/cowspace
203 mount -t tmpfs -o "size=${cow_spacesize}",mode=0755 cowspace /run/archiso/cowspace
205 mkdir -p -m 0700 "/run/archiso/cowspace/${cow_directory}"
207 _mnt_sfs "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.sfs" "/run/archiso/sfs/airootfs"
208 if [[ -f "/run/archiso/sfs/airootfs/airootfs.img" ]]; then
209 _mnt_dmsnapshot "/run/archiso/sfs/airootfs/airootfs.img" "${newroot}" "/"
211 _mnt_overlayfs "/run/archiso/sfs/airootfs" "${newroot}" "/"
214 if [[ "${copytoram}" == "y" ]]; then
215 umount -d /run/archiso/bootmnt
219 # vim:ft=sh:ts=4:sw=4:et: