3
# This script will be run by 'mkinitramfs' when it creates the image.
4
# Its job is to decide which files to install, then install them into
5
# the staging area, where the initramfs is being created. This
6
# happens when a new 'linux-image' package is installed, or when an
7
# administrator runs 'update-initramfs' by hand to update an initramfs
4
# This is an example hook script. It will be run by 'mkinitramfs'
5
# when it creates the image. It's job is to decide which files to
6
# install, then install them into the staging area, where the
7
# initramfs is being created. This happens when a new 'linux-image'
8
# package is installed, or when the administrator runs 'mkinitramfs'
9
# by hand to update an initramfs image.
11
# TODO: What about the case where you install something that should be
12
# added to the initramfs, but the linux-image it relates to has
13
# already been installed previously? Does this happen often
14
# enough that it needs to be handled? How can it be handled?
16
# * Think about the 'usplash'. The initramfs will need to be
17
# updated if a theme change or update is desired. Maybe it
18
# should not be totally automatic, but offered on upgrade
19
# predicated on a user response to a debconf question? That
20
# issue needs to be explored and a solution specified.
22
# * Do not assume that any needed subdirectories have been created
23
# yet, but don't bail out if they are already there.
25
# * All of the standard system tools are available, of course, since
26
# this hook is running in the real system, not the initramfs.
28
# * TODO: ... ? Anything else to tell them in this bullet-list?
10
32
# The environment contains at least:
12
# DESTDIR -- The staging directory where the image is being built.
14
# No initramfs pre-requirements
34
# CONFDIR -- usually /etc/mkinitramfs, can be set on mkinitramfs
37
# DESTDIR -- The staging directory where we are building the image.
39
# TODO: Decide what environment variables are meaningful and defined
40
# in this context, then document them as part of the interface.
42
# TODO: May need a version_compare function for comparison of VERSION?
46
# List the soft prerequisites here. This is a space separated list of
47
# names, of scripts that are in the same directory as this one, that
48
# must be run before this one can be.
66
# You can do anything you need to from here on.
69
# Source the optional 'hook-functions' scriptlet, if you need the
70
# functions defined within it. Read it to see what is available to
71
# you. It contains functions for copying dynamically linked program
72
# binaries, and kernel modules into the DESTDIR.
30
74
. /usr/share/initramfs-tools/hook-functions
33
"/usr/lib/`dpkg-architecture -qDEB_HOST_MULTIARCH 2>/dev/null`" \
34
"`rpm --eval='%{_libdir}' 2>/dev/null`" /usr/local/lib; do
35
if [ -d "$d"/mandos ]; then
40
if [ -z "$libdir" ]; then
45
for d in /etc/keys/mandos /etc/mandos/keys; do
51
if [ -z "$keydir" ]; then
52
# Mandos key directory not found
56
set `{ getent passwd _mandos \
57
|| getent passwd nobody \
58
|| echo ::65534:65534:::; } \
59
| cut --delimiter=: --fields=3,4 --only-delimited \
60
--output-delimiter=" "`
64
# The Mandos network client uses the network
65
76
auto_add_modules net
66
# The Mandos network client uses IPv6
69
# These are directories inside the initrd
70
80
CONFDIR="/conf/conf.d/mandos"
71
MANDOSDIR="/lib/mandos"
72
PLUGINDIR="${MANDOSDIR}/plugins.d"
73
PLUGINHELPERDIR="${MANDOSDIR}/plugin-helpers"
74
HOOKDIR="${MANDOSDIR}/network-hooks.d"
77
install --directory --mode=u=rwx,go=rx "${DESTDIR}${CONFDIR}" \
78
"${DESTDIR}${MANDOSDIR}" "${DESTDIR}${HOOKDIR}"
79
install --owner=${mandos_user} --group=${mandos_group} --directory \
80
--mode=u=rwx "${DESTDIR}${PLUGINDIR}" \
81
"${DESTDIR}${PLUGINHELPERDIR}"
83
copy_exec "$libdir"/mandos/mandos-to-cryptroot-unlock "${MANDOSDIR}"
85
# Copy the Mandos plugin runner
86
copy_exec "$libdir"/mandos/plugin-runner "${MANDOSDIR}"
90
# Copy the packaged plugins
91
for file in "$libdir"/mandos/plugins.d/*; do
81
DESTCONFDIR="${DESTDIR}${CONFDIR}"
82
mkdir --parents "${DESTCONFDIR}"
83
PLUGINDIR="${CONFDIR}/plugins.d"
84
mkdir --parents "${DESTDIR}${PLUGINDIR}"
86
# We don't need to copy_exec mandos-client, hooks/cryptroot will do
87
# that. That will not copy the plugins, however, so we do that here.
89
# The standard plugins
90
for file in /usr/lib/mandos/plugins.d/*; do
92
91
base="`basename \"$file\"`"
93
92
# Is this plugin overridden?
94
93
if [ -e "/etc/mandos/plugins.d/$base" ]; then
98
*~|.*|\#*\#|*.dpkg-old|*.dpkg-bak|*.dpkg-new|*.dpkg-divert)
100
"*") echo "W: Mandos client plugin directory is empty." >&2 ;;
101
*) copy_exec "$file" "${PLUGINDIR}" ;;
105
# Copy the packaged plugin helpers
106
for file in "$libdir"/mandos/plugin-helpers/*; do
107
base="`basename \"$file\"`"
108
# Is this plugin overridden?
109
if [ -e "/etc/mandos/plugin-helpers/$base" ]; then
113
*~|.*|\#*\#|*.dpkg-old|*.dpkg-bak|*.dpkg-new|*.dpkg-divert)
116
*) copy_exec "$file" "${PLUGINHELPERDIR}" ;;
120
# Copy any user-supplied plugins
97
*~|.*|\#*\#|*.dpkg-old|*.dpkg-new|*.dpkg-divert) : ;;
98
*) copy_exec "$file" "${PLUGINDIR}";;
102
# Any user-supplied plugins
121
103
for file in /etc/mandos/plugins.d/*; do
122
104
base="`basename \"$file\"`"
124
*~|.*|\#*\#|*.dpkg-old|*.dpkg-bak|*.dpkg-new|*.dpkg-divert)
127
*) copy_exec "$file" "${PLUGINDIR}" ;;
131
# Copy any user-supplied plugin helpers
132
for file in /etc/mandos/plugin-helpers/*; do
133
base="`basename \"$file\"`"
135
*~|.*|\#*\#|*.dpkg-old|*.dpkg-bak|*.dpkg-new|*.dpkg-divert)
138
*) copy_exec "$file" "${PLUGINHELPERDIR}" ;;
142
# Get DEVICE from initramfs.conf and other files
143
. /etc/initramfs-tools/initramfs.conf
144
for conf in /etc/initramfs-tools/conf.d/*; do
145
if [ -n "`basename \"$conf\" \
146
| grep '^[[:alnum:]][[:alnum:]\._-]*$' \
147
| grep -v '\.dpkg-.*$'`" ]; then
148
[ -f "${conf}" ] && . "${conf}"
154
for hook in /etc/mandos/network-hooks.d/*; do
155
case "`basename \"$hook\"`" in
157
*[!A-Za-z0-9_.-]*) continue ;;
158
*) test -d "$hook" || copy_exec "$hook" "${HOOKDIR}" ;;
160
if [ -x "$hook" ]; then
161
# Copy any files needed by the network hook
162
MANDOSNETHOOKDIR=/etc/mandos/network-hooks.d MODE=files \
163
VERBOSITY=0 "$hook" files | while read -r file target; do
164
if [ ! -e "${file}" ]; then
165
echo "WARNING: file ${file} not found, requested by Mandos network hook '${hook##*/}'" >&2
167
if [ -z "${target}" ]; then
170
copy_exec "$file" "$target"
173
# Copy and load any modules needed by the network hook
174
MANDOSNETHOOKDIR=/etc/mandos/network-hooks.d MODE=modules \
175
VERBOSITY=0 "$hook" modules | while read -r module; do
183
libgpgme11_version="`dpkg-query --showformat='${Version}' --show libgpgme11`"
184
if dpkg --compare-versions "$libgpgme11_version" ge 1.5.0-0.1; then
185
if [ -e /usr/bin/gpgconf ]; then
186
if [ ! -e "${DESTDIR}/usr/bin/gpgconf" ]; then
187
copy_exec /usr/bin/gpgconf
189
gpg="`/usr/bin/gpgconf|sed --quiet --expression='s/^gpg:[^:]*://p'`"
190
gpgagent="`/usr/bin/gpgconf|sed --quiet --expression='s/^gpg-agent:[^:]*://p'`"
191
# Newer versions of GnuPG 2 requires the gpg-agent binary
192
if [ -e "$gpgagent" ] && [ ! -e "${DESTDIR}$gpgagent" ]; then
193
copy_exec "$gpgagent"
196
elif dpkg --compare-versions "$libgpgme11_version" ge 1.4.1-0.1; then
199
if [ ! -e "${DESTDIR}$gpg" ]; then
203
unset libgpgme11_version
206
for file in /etc/mandos/plugin-runner.conf; do
207
if [ -d "$file" ]; then
210
cp --archive --sparse=always "$file" "${DESTDIR}${CONFDIR}"
213
if [ ${mandos_user} != 65534 ]; then
214
sed --in-place --expression="1i--userid=${mandos_user}" \
215
"${DESTDIR}${CONFDIR}/plugin-runner.conf"
218
if [ ${mandos_group} != 65534 ]; then
219
sed --in-place --expression="1i--groupid=${mandos_group}" \
220
"${DESTDIR}${CONFDIR}/plugin-runner.conf"
106
*~|.*|*.dpkg-old|*.dpkg-new|*.dpkg-divert) : ;;
107
*) copy_exec "$file" "${PLUGINDIR}";;
111
# GPGME needs /usr/bin/gpg
112
if [ -n "`ls \"${DESTDIR}\"/usr/lib/libgpgme.so* 2>/dev/null`" ]; then
113
copy_exec /usr/bin/gpg
224
for file in "$keydir"/*; do
117
for file in /etc/mandos/*; do
225
118
if [ -d "$file" ]; then
229
*~|.*|\#*\#|*.dpkg-old|*.dpkg-bak|*.dpkg-new|*.dpkg-divert)
233
cp --archive --sparse=always "$file" \
234
"${DESTDIR}${CONFDIR}"
235
chown ${mandos_user}:${mandos_group} \
236
"${DESTDIR}${CONFDIR}/`basename \"$file\"`"
121
cp --archive --sparse=always "$file" "${DESTCONFDIR}"
240
# Use Diffie-Hellman parameters file if available
241
if [ -e "${DESTDIR}${CONFDIR}"/dhparams.pem ]; then
243
--expression="1i--options-for=mandos-client:--dh-params=${CONFDIR}/dhparams.pem" \
244
"${DESTDIR}/${CONFDIR}/plugin-runner.conf"
123
# Create key ring files
124
gpg --no-random-seed-file --quiet --batch --no-tty \
125
--no-default-keyring --no-options --homedir "${DESTCONFDIR}" \
126
--no-permission-warning --import-options import-minimal \
127
--import "${DESTCONFDIR}/seckey.txt"
128
chown nobody "${DESTCONFDIR}/secring.gpg"
247
# /lib/mandos/plugin-runner will drop priviliges, but needs access to
248
# its plugin directory and its config file. However, since almost all
249
# files in initrd have been created with umask 027, this opening of
250
# permissions is needed.
130
# /keyscripts/mandos-client will drop priviliges, but needs access to
131
# its plugin directory. However, since almost all files in initrd
132
# have been created with umask 027, this opening of permissions is needed.
252
134
# (The umask is not really intended to affect the files inside the
253
# initrd; it is intended to affect the initrd.img file itself, since
254
# it now contains secret key files. There is, however, no other way
255
# to set the permission of the initrd.img file without a race
256
# condition. This umask is set by "initramfs-tools-conf", installed
257
# as "/usr/share/initramfs-tools/conf.d/mandos-conf".)
135
# initrd, but the initrd.img file itself, since it now contains secret
136
# key files. There is, however, no other way to set the permission of
137
# the initrd.img file without a race condition. This umask is set by
138
# "/usr/share/initramfs-tools/conf-hooks.d/mandos".)
259
for full in "${MANDOSDIR}" "${CONFDIR}"; do
260
while [ "$full" != "/" ]; do
261
chmod a+rX "${DESTDIR}$full"
262
full="`dirname \"$full\"`"
141
while [ "$full" != "/" ]; do
142
chmod a+rX "${DESTDIR}$full"
143
full="`dirname \"$full\"`"
266
# Reset some other things to sane permissions which we have
267
# inadvertently affected with our umask setting.
268
145
for dir in / /bin /etc /keyscripts /sbin /scripts /usr /usr/bin; do
269
if [ -d "${DESTDIR}$dir" ]; then
270
chmod a+rX "${DESTDIR}$dir"
146
chmod a+rX "${DESTDIR}$dir"
273
for dir in "${DESTDIR}"/lib* "${DESTDIR}"/usr/lib*; do
274
if [ -d "$dir" ]; then
275
find "$dir" \! -perm -u+rw,g+r -prune -or \! -type l -print0 \
276
| xargs --null --no-run-if-empty chmod a+rX --
148
for dir in /lib /usr/lib; do
149
chmod --recursive a+rX "${DESTDIR}$dir"
added
removed
initramfs-tools-hook
