853 lines
30 KiB
Bash
853 lines
30 KiB
Bash
|
#!/bin/bash -e
|
||
|
|
|
||
|
|
# Copyright (c) 2012 The Chromium Authors. All rights reserved.
|
||
|
|
# Use of this source code is governed by a BSD-style license that can be
|
||
|
|
# found in the LICENSE file.
|
||
|
|
|
||
|
|
# This script installs Debian-derived distributions in a chroot environment.
|
||
|
|
# It can for example be used to have an accurate 32bit build and test
|
||
|
|
# environment when otherwise working on a 64bit machine.
|
||
|
|
# N. B. it is unlikely that this script will ever work on anything other than a
|
||
|
|
# Debian-derived system.
|
||
|
|
|
||
|
|
# Older Debian based systems had both "admin" and "adm" groups, with "admin"
|
||
|
|
# apparently being used in more places. Newer distributions have standardized
|
||
|
|
# on just the "adm" group. Check /etc/group for the prefered name of the
|
||
|
|
# administrator group.
|
||
|
|
admin=$(grep '^admin:' /etc/group >&/dev/null && echo admin || echo adm)
|
||
|
|
|
||
|
|
usage() {
|
||
|
|
echo "usage: ${0##*/} [-m mirror] [-g group,...] [-s] [-c]"
|
||
|
|
echo "-b dir additional directories that should be bind mounted,"
|
||
|
|
echo ' or "NONE".'
|
||
|
|
echo " Default: if local filesystems present, ask user for help"
|
||
|
|
echo "-g group,... groups that can use the chroot unauthenticated"
|
||
|
|
echo " Default: '${admin}' and current user's group ('$(id -gn)')"
|
||
|
|
echo "-l List all installed chroot environments"
|
||
|
|
echo "-m mirror an alternate repository mirror for package downloads"
|
||
|
|
echo "-s configure default deb-srcs"
|
||
|
|
echo "-c always copy 64bit helper binaries to 32bit chroot"
|
||
|
|
echo "-h this help message"
|
||
|
|
}
|
||
|
|
|
||
|
|
process_opts() {
|
||
|
|
local OPTNAME OPTIND OPTERR OPTARG
|
||
|
|
while getopts ":b:g:lm:sch" OPTNAME; do
|
||
|
|
case "$OPTNAME" in
|
||
|
|
b)
|
||
|
|
if [ "${OPTARG}" = "NONE" -a -z "${bind_mounts}" ]; then
|
||
|
|
bind_mounts="${OPTARG}"
|
||
|
|
else
|
||
|
|
if [ "${bind_mounts}" = "NONE" -o "${OPTARG}" = "${OPTARG#/}" -o \
|
||
|
|
! -d "${OPTARG}" ]; then
|
||
|
|
echo "Invalid -b option(s)"
|
||
|
|
usage
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
bind_mounts="${bind_mounts}
|
||
|
|
${OPTARG} ${OPTARG} none rw,bind 0 0"
|
||
|
|
fi
|
||
|
|
;;
|
||
|
|
g)
|
||
|
|
[ -n "${OPTARG}" ] &&
|
||
|
|
chroot_groups="${chroot_groups}${chroot_groups:+,}${OPTARG}"
|
||
|
|
;;
|
||
|
|
l)
|
||
|
|
list_all_chroots
|
||
|
|
exit
|
||
|
|
;;
|
||
|
|
m)
|
||
|
|
if [ -n "${mirror}" ]; then
|
||
|
|
echo "You can only specify exactly one mirror location"
|
||
|
|
usage
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
mirror="$OPTARG"
|
||
|
|
;;
|
||
|
|
s)
|
||
|
|
add_srcs="y"
|
||
|
|
;;
|
||
|
|
c)
|
||
|
|
copy_64="y"
|
||
|
|
;;
|
||
|
|
h)
|
||
|
|
usage
|
||
|
|
exit 0
|
||
|
|
;;
|
||
|
|
\:)
|
||
|
|
echo "'-$OPTARG' needs an argument."
|
||
|
|
usage
|
||
|
|
exit 1
|
||
|
|
;;
|
||
|
|
*)
|
||
|
|
echo "invalid command-line option: $OPTARG"
|
||
|
|
usage
|
||
|
|
exit 1
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
done
|
||
|
|
|
||
|
|
if [ $# -ge ${OPTIND} ]; then
|
||
|
|
eval echo "Unexpected command line argument: \${${OPTIND}}"
|
||
|
|
usage
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
list_all_chroots() {
|
||
|
|
for i in /var/lib/chroot/*; do
|
||
|
|
i="${i##*/}"
|
||
|
|
[ "${i}" = "*" ] && continue
|
||
|
|
[ -x "/usr/local/bin/${i%bit}" ] || continue
|
||
|
|
grep -qs "^\[${i%bit}\]\$" /etc/schroot/schroot.conf || continue
|
||
|
|
[ -r "/etc/schroot/script-${i}" -a \
|
||
|
|
-r "/etc/schroot/mount-${i}" ] || continue
|
||
|
|
echo "${i%bit}"
|
||
|
|
done
|
||
|
|
}
|
||
|
|
|
||
|
|
getkey() {
|
||
|
|
(
|
||
|
|
trap 'stty echo -iuclc icanon 2>/dev/null' EXIT INT TERM QUIT HUP
|
||
|
|
stty -echo iuclc -icanon 2>/dev/null
|
||
|
|
dd count=1 bs=1 2>/dev/null
|
||
|
|
)
|
||
|
|
}
|
||
|
|
|
||
|
|
chr() {
|
||
|
|
printf "\\$(printf '%03o' "$1")"
|
||
|
|
}
|
||
|
|
|
||
|
|
ord() {
|
||
|
|
printf '%d' $(printf '%c' "$1" | od -tu1 -An)
|
||
|
|
}
|
||
|
|
|
||
|
|
is_network_drive() {
|
||
|
|
stat -c %T -f "$1/" 2>/dev/null |
|
||
|
|
egrep -qs '^nfs|cifs|smbfs'
|
||
|
|
}
|
||
|
|
|
||
|
|
# Check that we are running as a regular user
|
||
|
|
[ "$(id -nu)" = root ] && {
|
||
|
|
echo "Run this script as a regular user and provide your \"sudo\"" \
|
||
|
|
"password if requested" >&2
|
||
|
|
exit 1
|
||
|
|
}
|
||
|
|
|
||
|
|
process_opts "$@"
|
||
|
|
|
||
|
|
echo "This script will help you through the process of installing a"
|
||
|
|
echo "Debian or Ubuntu distribution in a chroot environment. You will"
|
||
|
|
echo "have to provide your \"sudo\" password when requested."
|
||
|
|
echo
|
||
|
|
|
||
|
|
# Error handler
|
||
|
|
trap 'exit 1' INT TERM QUIT HUP
|
||
|
|
trap 'sudo apt-get clean; tput bel; echo; echo Failed' EXIT
|
||
|
|
|
||
|
|
# Install any missing applications that this script relies on. If these packages
|
||
|
|
# are already installed, don't force another "apt-get install". That would
|
||
|
|
# prevent them from being auto-removed, if they ever become eligible for that.
|
||
|
|
# And as this script only needs the packages once, there is no good reason to
|
||
|
|
# introduce a hard dependency on things such as dchroot and debootstrap.
|
||
|
|
dep=
|
||
|
|
for i in dchroot debootstrap libwww-perl; do
|
||
|
|
[ -d /usr/share/doc/"$i" ] || dep="$dep $i"
|
||
|
|
done
|
||
|
|
[ -n "$dep" ] && sudo apt-get -y install $dep
|
||
|
|
sudo apt-get -y install schroot
|
||
|
|
|
||
|
|
# Create directory for chroot
|
||
|
|
sudo mkdir -p /var/lib/chroot
|
||
|
|
|
||
|
|
# Find chroot environments that can be installed with debootstrap
|
||
|
|
targets="$(cd /usr/share/debootstrap/scripts
|
||
|
|
ls | grep '^[a-z]*$')"
|
||
|
|
|
||
|
|
# Ask user to pick one of the available targets
|
||
|
|
echo "The following targets are available to be installed in a chroot:"
|
||
|
|
j=1; for i in $targets; do
|
||
|
|
printf '%4d: %s\n' "$j" "$i"
|
||
|
|
j=$(($j+1))
|
||
|
|
done
|
||
|
|
while :; do
|
||
|
|
printf "Which target would you like to install: "
|
||
|
|
read n
|
||
|
|
[ "$n" -gt 0 -a "$n" -lt "$j" ] >&/dev/null && break
|
||
|
|
done
|
||
|
|
j=1; for i in $targets; do
|
||
|
|
[ "$j" -eq "$n" ] && { distname="$i"; break; }
|
||
|
|
j=$(($j+1))
|
||
|
|
done
|
||
|
|
echo
|
||
|
|
|
||
|
|
# On x86-64, ask whether the user wants to install x86-32 or x86-64
|
||
|
|
archflag=
|
||
|
|
arch=
|
||
|
|
if [ "$(uname -m)" = x86_64 ]; then
|
||
|
|
while :; do
|
||
|
|
echo "You are running a 64bit kernel. This allows you to install either a"
|
||
|
|
printf "32bit or a 64bit chroot environment. %s" \
|
||
|
|
"Which one do you want (32, 64) "
|
||
|
|
read arch
|
||
|
|
[ "${arch}" == 32 -o "${arch}" == 64 ] && break
|
||
|
|
done
|
||
|
|
[ "${arch}" == 32 ] && archflag="--arch i386" || archflag="--arch amd64"
|
||
|
|
arch="${arch}bit"
|
||
|
|
echo
|
||
|
|
fi
|
||
|
|
target="${distname}${arch}"
|
||
|
|
|
||
|
|
# Don't accidentally overwrite an existing installation
|
||
|
|
[ -d /var/lib/chroot/"${target}" ] && {
|
||
|
|
while :; do
|
||
|
|
echo "This chroot already exists on your machine."
|
||
|
|
if schroot -l --all-sessions 2>&1 |
|
||
|
|
sed 's/^session://' |
|
||
|
|
grep -qs "^${target%bit}-"; then
|
||
|
|
echo "And it appears to be in active use. Terminate all programs that"
|
||
|
|
echo "are currently using the chroot environment and then re-run this"
|
||
|
|
echo "script."
|
||
|
|
echo "If you still get an error message, you might have stale mounts"
|
||
|
|
echo "that you forgot to delete. You can always clean up mounts by"
|
||
|
|
echo "executing \"${target%bit} -c\"."
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
echo "I can abort installation, I can overwrite the existing chroot,"
|
||
|
|
echo "or I can delete the old one and then exit. What would you like to"
|
||
|
|
printf "do (a/o/d)? "
|
||
|
|
read choice
|
||
|
|
case "${choice}" in
|
||
|
|
a|A) exit 1;;
|
||
|
|
o|O) sudo rm -rf "/var/lib/chroot/${target}"; break;;
|
||
|
|
d|D) sudo rm -rf "/var/lib/chroot/${target}" \
|
||
|
|
"/usr/local/bin/${target%bit}" \
|
||
|
|
"/etc/schroot/mount-${target}" \
|
||
|
|
"/etc/schroot/script-${target}"
|
||
|
|
sudo sed -ni '/^[[]'"${target%bit}"']$/,${
|
||
|
|
:1;n;/^[[]/b2;b1;:2;p;n;b2};p' \
|
||
|
|
"/etc/schroot/schroot.conf"
|
||
|
|
trap '' INT TERM QUIT HUP
|
||
|
|
trap '' EXIT
|
||
|
|
echo "Deleted!"
|
||
|
|
exit 0;;
|
||
|
|
esac
|
||
|
|
done
|
||
|
|
echo
|
||
|
|
}
|
||
|
|
sudo mkdir -p /var/lib/chroot/"${target}"
|
||
|
|
|
||
|
|
# Offer to include additional standard repositories for Ubuntu-based chroots.
|
||
|
|
alt_repos=
|
||
|
|
grep -qs ubuntu.com /usr/share/debootstrap/scripts/"${distname}" && {
|
||
|
|
while :; do
|
||
|
|
echo "Would you like to add ${distname}-updates and ${distname}-security "
|
||
|
|
printf "to the chroot's sources.list (y/n)? "
|
||
|
|
read alt_repos
|
||
|
|
case "${alt_repos}" in
|
||
|
|
y|Y)
|
||
|
|
alt_repos="y"
|
||
|
|
break
|
||
|
|
;;
|
||
|
|
n|N)
|
||
|
|
break
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
done
|
||
|
|
echo
|
||
|
|
}
|
||
|
|
|
||
|
|
# Check for non-standard file system mount points and ask the user whether
|
||
|
|
# they should be imported into the chroot environment
|
||
|
|
# We limit to the first 26 mount points that much some basic heuristics,
|
||
|
|
# because a) that allows us to enumerate choices with a single character,
|
||
|
|
# and b) if we find more than 26 mount points, then these are probably
|
||
|
|
# false-positives and something is very unusual about the system's
|
||
|
|
# configuration. No need to spam the user with even more information that
|
||
|
|
# is likely completely irrelevant.
|
||
|
|
if [ -z "${bind_mounts}" ]; then
|
||
|
|
mounts="$(awk '$2 != "/" && $2 !~ "^/boot" && $2 !~ "^/home" &&
|
||
|
|
$2 !~ "^/media" && $2 !~ "^/run" &&
|
||
|
|
($3 ~ "ext[2-4]" || $3 == "reiserfs" || $3 == "btrfs" ||
|
||
|
|
$3 == "xfs" || $3 == "jfs" || $3 == "u?msdos" ||
|
||
|
|
$3 == "v?fat" || $3 == "hfs" || $3 == "ntfs" ||
|
||
|
|
$3 ~ "nfs[4-9]?" || $3 == "smbfs" || $3 == "cifs") {
|
||
|
|
print $2
|
||
|
|
}' /proc/mounts |
|
||
|
|
head -n26)"
|
||
|
|
if [ -n "${mounts}" ]; then
|
||
|
|
echo "You appear to have non-standard mount points that you"
|
||
|
|
echo "might want to import into the chroot environment:"
|
||
|
|
echo
|
||
|
|
sel=
|
||
|
|
while :; do
|
||
|
|
# Print a menu, listing all non-default mounts of local or network
|
||
|
|
# file systems.
|
||
|
|
j=1; for m in ${mounts}; do
|
||
|
|
c="$(printf $(printf '\\%03o' $((64+$j))))"
|
||
|
|
echo "$sel" | grep -qs $c &&
|
||
|
|
state="mounted in chroot" || state="$(tput el)"
|
||
|
|
printf " $c) %-40s${state}\n" "$m"
|
||
|
|
j=$(($j+1))
|
||
|
|
done
|
||
|
|
# Allow user to interactively (de-)select any of the entries
|
||
|
|
echo
|
||
|
|
printf "Select mount points that you want to be included or press %s" \
|
||
|
|
"SPACE to continue"
|
||
|
|
c="$(getkey | tr a-z A-Z)"
|
||
|
|
[ "$c" == " " ] && { echo; echo; break; }
|
||
|
|
if [ -z "$c" ] ||
|
||
|
|
[ "$c" '<' 'A' -o $(ord "$c") -gt $((64 + $(ord "$j"))) ]; then
|
||
|
|
# Invalid input, ring the console bell
|
||
|
|
tput bel
|
||
|
|
else
|
||
|
|
# Toggle the selection for the given entry
|
||
|
|
if echo "$sel" | grep -qs $c; then
|
||
|
|
sel="$(printf "$sel" | sed "s/$c//")"
|
||
|
|
else
|
||
|
|
sel="$sel$c"
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
# Reposition cursor to the top of the list of entries
|
||
|
|
tput cuu $(($j + 1))
|
||
|
|
echo
|
||
|
|
done
|
||
|
|
fi
|
||
|
|
j=1; for m in ${mounts}; do
|
||
|
|
c="$(chr $(($j + 64)))"
|
||
|
|
if echo "$sel" | grep -qs $c; then
|
||
|
|
bind_mounts="${bind_mounts}$m $m none rw,bind 0 0
|
||
|
|
"
|
||
|
|
fi
|
||
|
|
j=$(($j+1))
|
||
|
|
done
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Remove stale entry from /etc/schroot/schroot.conf. Entries start
|
||
|
|
# with the target name in square brackets, followed by an arbitrary
|
||
|
|
# number of lines. The entry stops when either the end of file has
|
||
|
|
# been reached, or when the beginning of a new target is encountered.
|
||
|
|
# This means, we cannot easily match for a range of lines in
|
||
|
|
# "sed". Instead, we actually have to iterate over each line and check
|
||
|
|
# whether it is the beginning of a new entry.
|
||
|
|
sudo sed -ni '/^[[]'"${target%bit}"']$/,${:1;n;/^[[]/b2;b1;:2;p;n;b2};p' \
|
||
|
|
/etc/schroot/schroot.conf
|
||
|
|
|
||
|
|
# Download base system. This takes some time
|
||
|
|
if [ -z "${mirror}" ]; then
|
||
|
|
grep -qs ubuntu.com /usr/share/debootstrap/scripts/"${distname}" &&
|
||
|
|
mirror="http://archive.ubuntu.com/ubuntu" ||
|
||
|
|
mirror="http://ftp.us.debian.org/debian"
|
||
|
|
fi
|
||
|
|
|
||
|
|
sudo ${http_proxy:+http_proxy="${http_proxy}"} debootstrap ${archflag} \
|
||
|
|
"${distname}" "/var/lib/chroot/${target}" "$mirror"
|
||
|
|
|
||
|
|
# Add new entry to /etc/schroot/schroot.conf
|
||
|
|
grep -qs ubuntu.com /usr/share/debootstrap/scripts/"${distname}" &&
|
||
|
|
brand="Ubuntu" || brand="Debian"
|
||
|
|
if [ -z "${chroot_groups}" ]; then
|
||
|
|
chroot_groups="${admin},$(id -gn)"
|
||
|
|
fi
|
||
|
|
# Older versions of schroot wanted a "priority=" line, whereas recent
|
||
|
|
# versions deprecate "priority=" and warn if they see it. We don't have
|
||
|
|
# a good feature test, but scanning for the string "priority=" in the
|
||
|
|
# existing "schroot.conf" file is a good indication of what to do.
|
||
|
|
priority=$(grep -qs 'priority=' /etc/schroot/schroot.conf &&
|
||
|
|
echo 'priority=3' || :)
|
||
|
|
sudo sh -c 'cat >>/etc/schroot/schroot.conf' <<EOF
|
||
|
|
[${target%bit}]
|
||
|
|
description=${brand} ${distname} ${arch}
|
||
|
|
type=directory
|
||
|
|
directory=/var/lib/chroot/${target}
|
||
|
|
users=root
|
||
|
|
groups=${chroot_groups}
|
||
|
|
root-groups=${chroot_groups}
|
||
|
|
personality=linux$([ "${arch}" != 64bit ] && echo 32)
|
||
|
|
script-config=script-${target}
|
||
|
|
${priority}
|
||
|
|
|
||
|
|
EOF
|
||
|
|
|
||
|
|
# Set up a list of mount points that is specific to this
|
||
|
|
# chroot environment.
|
||
|
|
sed '/^FSTAB=/s,"[^"]*","/etc/schroot/mount-'"${target}"'",' \
|
||
|
|
/etc/schroot/script-defaults |
|
||
|
|
sudo sh -c 'cat >/etc/schroot/script-'"${target}"
|
||
|
|
sed '\,^/home[/[:space:]],s/\([,[:space:]]\)bind[[:space:]]/\1rbind /' \
|
||
|
|
/etc/schroot/mount-defaults |
|
||
|
|
sudo sh -c 'cat > /etc/schroot/mount-'"${target}"
|
||
|
|
|
||
|
|
# Add the extra mount points that the user told us about
|
||
|
|
[ -n "${bind_mounts}" -a "${bind_mounts}" != "NONE" ] &&
|
||
|
|
printf "${bind_mounts}" |
|
||
|
|
sudo sh -c 'cat >>/etc/schroot/mount-'"${target}"
|
||
|
|
|
||
|
|
# If this system has a "/media" mountpoint, import it into the chroot
|
||
|
|
# environment. Most modern distributions use this mount point to
|
||
|
|
# automatically mount devices such as CDROMs, USB sticks, etc...
|
||
|
|
if [ -d /media ] &&
|
||
|
|
! grep -qs '^/media' /etc/schroot/mount-"${target}"; then
|
||
|
|
echo '/media /media none rw,rbind 0 0' |
|
||
|
|
sudo sh -c 'cat >>/etc/schroot/mount-'"${target}"
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Share /dev/shm, /run and /run/shm.
|
||
|
|
grep -qs '^/dev/shm' /etc/schroot/mount-"${target}" ||
|
||
|
|
echo '/dev/shm /dev/shm none rw,bind 0 0' |
|
||
|
|
sudo sh -c 'cat >>/etc/schroot/mount-'"${target}"
|
||
|
|
if [ ! -d "/var/lib/chroot/${target}/run" ] &&
|
||
|
|
! grep -qs '^/run' /etc/schroot/mount-"${target}"; then
|
||
|
|
echo '/run /run none rw,bind 0 0' |
|
||
|
|
sudo sh -c 'cat >>/etc/schroot/mount-'"${target}"
|
||
|
|
fi
|
||
|
|
if ! grep -qs '^/run/shm' /etc/schroot/mount-"${target}"; then
|
||
|
|
{ [ -d /run ] && echo '/run/shm /run/shm none rw,bind 0 0' ||
|
||
|
|
echo '/dev/shm /run/shm none rw,bind 0 0'; } |
|
||
|
|
sudo sh -c 'cat >>/etc/schroot/mount-'"${target}"
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Set up a special directory that changes contents depending on the target
|
||
|
|
# that is executing.
|
||
|
|
d="$(readlink -f "${HOME}/chroot" 2>/dev/null || echo "${HOME}/chroot")"
|
||
|
|
s="${d}/.${target}"
|
||
|
|
echo "${s} ${d} none rw,bind 0 0" |
|
||
|
|
sudo sh -c 'cat >>/etc/schroot/mount-'"${target}"
|
||
|
|
mkdir -p "${s}"
|
||
|
|
|
||
|
|
# Install a helper script to launch commands in the chroot
|
||
|
|
sudo sh -c 'cat >/usr/local/bin/'"${target%bit}" <<'EOF'
|
||
|
|
#!/bin/bash
|
||
|
|
|
||
|
|
chroot="${0##*/}"
|
||
|
|
|
||
|
|
wrap() {
|
||
|
|
# Word-wrap the text passed-in on stdin. Optionally, on continuation lines
|
||
|
|
# insert the same number of spaces as the number of characters in the
|
||
|
|
# parameter(s) passed to this function.
|
||
|
|
# If the "fold" program cannot be found, or if the actual width of the
|
||
|
|
# terminal cannot be determined, this function doesn't attempt to do any
|
||
|
|
# wrapping.
|
||
|
|
local f="$(type -P fold)"
|
||
|
|
[ -z "${f}" ] && { cat; return; }
|
||
|
|
local c="$(stty -a </dev/tty 2>/dev/null |
|
||
|
|
sed 's/.*columns[[:space:]]*\([0-9]*\).*/\1/;t;d')"
|
||
|
|
[ -z "${c}" ] && { cat; return; }
|
||
|
|
local i="$(echo "$*"|sed 's/./ /g')"
|
||
|
|
local j="$(printf %s "${i}"|wc -c)"
|
||
|
|
if [ "${c}" -gt "${j}" ]; then
|
||
|
|
dd bs=1 count="${j}" 2>/dev/null
|
||
|
|
"${f}" -sw "$((${c}-${j}))" | sed '2,$s/^/'"${i}"'/'
|
||
|
|
else
|
||
|
|
"${f}" -sw "${c}"
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
help() {
|
||
|
|
echo "Usage ${0##*/} [-h|--help] [-c|--clean] [-C|--clean-all] [-l|--list] [--] args" | wrap "Usage ${0##*/} "
|
||
|
|
echo " help: print this message" | wrap " "
|
||
|
|
echo " list: list all known chroot environments" | wrap " "
|
||
|
|
echo " clean: remove all old chroot sessions for \"${chroot}\"" | wrap " "
|
||
|
|
echo " clean-all: remove all old chroot sessions for all environments" | wrap " "
|
||
|
|
exit 0
|
||
|
|
}
|
||
|
|
|
||
|
|
clean() {
|
||
|
|
local s t rc
|
||
|
|
rc=0
|
||
|
|
for s in $(schroot -l --all-sessions); do
|
||
|
|
if [ -n "$1" ]; then
|
||
|
|
t="${s#session:}"
|
||
|
|
[ "${t#${chroot}-}" == "${t}" ] && continue
|
||
|
|
fi
|
||
|
|
if ls -l /proc/*/{cwd,fd} 2>/dev/null |
|
||
|
|
fgrep -qs "/var/lib/schroot/mount/${t}"; then
|
||
|
|
echo "Session \"${t}\" still has active users, not cleaning up" | wrap
|
||
|
|
rc=1
|
||
|
|
continue
|
||
|
|
fi
|
||
|
|
sudo schroot -c "${s}" -e || rc=1
|
||
|
|
done
|
||
|
|
exit ${rc}
|
||
|
|
}
|
||
|
|
|
||
|
|
list() {
|
||
|
|
for e in $(schroot -l); do
|
||
|
|
e="${e#chroot:}"
|
||
|
|
[ -x "/usr/local/bin/${e}" ] || continue
|
||
|
|
if schroot -l --all-sessions 2>/dev/null |
|
||
|
|
sed 's/^session://' |
|
||
|
|
grep -qs "^${e}-"; then
|
||
|
|
echo "${e} is currently active"
|
||
|
|
else
|
||
|
|
echo "${e}"
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
exit 0
|
||
|
|
}
|
||
|
|
|
||
|
|
while [ "$#" -ne 0 ]; do
|
||
|
|
case "$1" in
|
||
|
|
--) shift; break;;
|
||
|
|
-h|--help) shift; help;;
|
||
|
|
-l|--list) shift; list;;
|
||
|
|
-c|--clean) shift; clean "${chroot}";;
|
||
|
|
-C|--clean-all) shift; clean;;
|
||
|
|
*) break;;
|
||
|
|
esac
|
||
|
|
done
|
||
|
|
|
||
|
|
# Start a new chroot session and keep track of the session id. We inject this
|
||
|
|
# id into all processes that run inside the chroot. Unless they go out of their
|
||
|
|
# way to clear their environment, we can then later identify our child and
|
||
|
|
# grand-child processes by scanning their environment.
|
||
|
|
session="$(schroot -c "${chroot}" -b)"
|
||
|
|
export CHROOT_SESSION_ID="${session}"
|
||
|
|
|
||
|
|
if [ $# -eq 0 ]; then
|
||
|
|
# Run an interactive shell session
|
||
|
|
schroot -c "${session}" -r -p
|
||
|
|
else
|
||
|
|
# Run a command inside of the chroot environment
|
||
|
|
p="$1"; shift
|
||
|
|
schroot -c "${session}" -r -p "$p" -- "$@"
|
||
|
|
fi
|
||
|
|
rc=$?
|
||
|
|
|
||
|
|
# Compute the inode of the root directory inside of the chroot environment.
|
||
|
|
i=$(schroot -c "${session}" -r -p ls -- -id /proc/self/root/. |
|
||
|
|
awk '{ print $1 }') 2>/dev/null
|
||
|
|
other_pids=
|
||
|
|
while [ -n "$i" ]; do
|
||
|
|
# Identify processes by the inode number of their root directory. Then
|
||
|
|
# remove all processes that we know belong to other sessions. We use
|
||
|
|
# "sort | uniq -u" to do what amounts to a "set substraction operation".
|
||
|
|
pids=$({ ls -id1 /proc/*/root/. 2>/dev/null |
|
||
|
|
sed -e 's,^[^0-9]*'$i'.*/\([1-9][0-9]*\)/.*$,\1,
|
||
|
|
t
|
||
|
|
d';
|
||
|
|
echo "${other_pids}";
|
||
|
|
echo "${other_pids}"; } | sort | uniq -u) >/dev/null 2>&1
|
||
|
|
# Kill all processes that are still left running in the session. This is
|
||
|
|
# typically an assortment of daemon processes that were started
|
||
|
|
# automatically. They result in us being unable to tear down the session
|
||
|
|
# cleanly.
|
||
|
|
[ -z "${pids}" ] && break
|
||
|
|
for j in $pids; do
|
||
|
|
# Unfortunately, the way that schroot sets up sessions has the
|
||
|
|
# side-effect of being unable to tell one session apart from another.
|
||
|
|
# This can result in us attempting to kill processes in other sessions.
|
||
|
|
# We make a best-effort to avoid doing so.
|
||
|
|
k="$( ( xargs -0 -n1 </proc/$j/environ ) 2>/dev/null |
|
||
|
|
sed 's/^CHROOT_SESSION_ID=/x/;t1;d;:1;q')"
|
||
|
|
if [ -n "${k}" -a "${k#x}" != "${session}" ]; then
|
||
|
|
other_pids="${other_pids}
|
||
|
|
${j}"
|
||
|
|
continue
|
||
|
|
fi
|
||
|
|
kill -9 $pids
|
||
|
|
done
|
||
|
|
done
|
||
|
|
# End the chroot session. This should clean up all temporary files. But if we
|
||
|
|
# earlier failed to terminate all (daemon) processes inside of the session,
|
||
|
|
# deleting the session could fail. When that happens, the user has to manually
|
||
|
|
# clean up the stale files by invoking us with "--clean" after having killed
|
||
|
|
# all running processes.
|
||
|
|
schroot -c "${session}" -e
|
||
|
|
exit $rc
|
||
|
|
EOF
|
||
|
|
sudo chown root:root /usr/local/bin/"${target%bit}"
|
||
|
|
sudo chmod 755 /usr/local/bin/"${target%bit}"
|
||
|
|
|
||
|
|
# Add the standard Ubuntu update repositories if requested.
|
||
|
|
[ "${alt_repos}" = "y" -a \
|
||
|
|
-r "/var/lib/chroot/${target}/etc/apt/sources.list" ] &&
|
||
|
|
sudo sed -i '/^deb .* [^ -]\+ main$/p
|
||
|
|
s/^\(deb .* [^ -]\+\) main/\1-security main/
|
||
|
|
p
|
||
|
|
t1
|
||
|
|
d
|
||
|
|
:1;s/-security main/-updates main/
|
||
|
|
t
|
||
|
|
d' "/var/lib/chroot/${target}/etc/apt/sources.list"
|
||
|
|
|
||
|
|
# Add a few more repositories to the chroot
|
||
|
|
[ -r "/var/lib/chroot/${target}/etc/apt/sources.list" ] &&
|
||
|
|
sudo sed -i 's/ main$/ main restricted universe multiverse/' \
|
||
|
|
"/var/lib/chroot/${target}/etc/apt/sources.list"
|
||
|
|
|
||
|
|
# Add the Ubuntu "partner" repository, if available
|
||
|
|
if [ -r "/var/lib/chroot/${target}/etc/apt/sources.list" ] &&
|
||
|
|
HEAD "http://archive.canonical.com/ubuntu/dists/${distname}/partner" \
|
||
|
|
>&/dev/null; then
|
||
|
|
sudo sh -c '
|
||
|
|
echo "deb http://archive.canonical.com/ubuntu" \
|
||
|
|
"'"${distname}"' partner" \
|
||
|
|
>>"/var/lib/chroot/'"${target}"'/etc/apt/sources.list"'
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Add source repositories, if the user requested we do so
|
||
|
|
[ "${add_srcs}" = "y" -a \
|
||
|
|
-r "/var/lib/chroot/${target}/etc/apt/sources.list" ] &&
|
||
|
|
sudo sed -i '/^deb[^-]/p
|
||
|
|
s/^deb\([^-]\)/deb-src\1/' \
|
||
|
|
"/var/lib/chroot/${target}/etc/apt/sources.list"
|
||
|
|
|
||
|
|
# Set apt proxy if host has set http_proxy
|
||
|
|
if [ -n "${http_proxy}" ]; then
|
||
|
|
sudo sh -c '
|
||
|
|
echo "Acquire::http::proxy \"'"${http_proxy}"'\";" \
|
||
|
|
>>"/var/lib/chroot/'"${target}"'/etc/apt/apt.conf"'
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Update packages
|
||
|
|
sudo "/usr/local/bin/${target%bit}" /bin/sh -c '
|
||
|
|
apt-get update; apt-get -y dist-upgrade' || :
|
||
|
|
|
||
|
|
# Install a couple of missing packages
|
||
|
|
for i in debian-keyring ubuntu-keyring locales sudo; do
|
||
|
|
[ -d "/var/lib/chroot/${target}/usr/share/doc/$i" ] ||
|
||
|
|
sudo "/usr/local/bin/${target%bit}" apt-get -y install "$i" || :
|
||
|
|
done
|
||
|
|
|
||
|
|
# Configure locales
|
||
|
|
sudo "/usr/local/bin/${target%bit}" /bin/sh -c '
|
||
|
|
l='"${LANG:-en_US}"'; l="${l%%.*}"
|
||
|
|
[ -r /etc/locale.gen ] &&
|
||
|
|
sed -i "s/^# \($l\)/\1/" /etc/locale.gen
|
||
|
|
locale-gen $LANG en_US en_US.UTF-8' || :
|
||
|
|
|
||
|
|
# Enable multi-arch support, if available
|
||
|
|
sudo "/usr/local/bin/${target%bit}" dpkg --assert-multi-arch >&/dev/null &&
|
||
|
|
[ -r "/var/lib/chroot/${target}/etc/apt/sources.list" ] && {
|
||
|
|
sudo sed -i 's/ / [arch=amd64,i386] /' \
|
||
|
|
"/var/lib/chroot/${target}/etc/apt/sources.list"
|
||
|
|
[ -d /var/lib/chroot/${target}/etc/dpkg/dpkg.cfg.d/ ] &&
|
||
|
|
sudo "/usr/local/bin/${target%bit}" dpkg --add-architecture \
|
||
|
|
$([ "${arch}" = "32bit" ] && echo amd64 || echo i386) >&/dev/null ||
|
||
|
|
echo foreign-architecture \
|
||
|
|
$([ "${arch}" = "32bit" ] && echo amd64 || echo i386) |
|
||
|
|
sudo sh -c \
|
||
|
|
"cat >'/var/lib/chroot/${target}/etc/dpkg/dpkg.cfg.d/multiarch'"
|
||
|
|
}
|
||
|
|
|
||
|
|
# Configure "sudo" package
|
||
|
|
sudo "/usr/local/bin/${target%bit}" /bin/sh -c '
|
||
|
|
egrep -qs '"'^$(id -nu) '"' /etc/sudoers ||
|
||
|
|
echo '"'$(id -nu) ALL=(ALL) ALL'"' >>/etc/sudoers'
|
||
|
|
|
||
|
|
# Install a few more commonly used packages
|
||
|
|
sudo "/usr/local/bin/${target%bit}" apt-get -y install \
|
||
|
|
autoconf automake1.9 dpkg-dev g++-multilib gcc-multilib gdb less libtool \
|
||
|
|
strace
|
||
|
|
|
||
|
|
# If running a 32bit environment on a 64bit machine, install a few binaries
|
||
|
|
# as 64bit. This is only done automatically if the chroot distro is the same as
|
||
|
|
# the host, otherwise there might be incompatibilities in build settings or
|
||
|
|
# runtime dependencies. The user can force it with the '-c' flag.
|
||
|
|
host_distro=$(grep -s DISTRIB_CODENAME /etc/lsb-release | \
|
||
|
|
cut -d "=" -f 2)
|
||
|
|
if [ "${copy_64}" = "y" -o \
|
||
|
|
"${host_distro}" = "${distname}" -a "${arch}" = 32bit ] && \
|
||
|
|
file /bin/bash 2>/dev/null | grep -q x86-64; then
|
||
|
|
readlinepkg=$(sudo "/usr/local/bin/${target%bit}" sh -c \
|
||
|
|
'apt-cache search "lib64readline.\$" | sort | tail -n 1 | cut -d " " -f 1')
|
||
|
|
sudo "/usr/local/bin/${target%bit}" apt-get -y install \
|
||
|
|
lib64expat1 lib64ncurses5 ${readlinepkg} lib64z1
|
||
|
|
dep=
|
||
|
|
for i in binutils gdb; do
|
||
|
|
[ -d /usr/share/doc/"$i" ] || dep="$dep $i"
|
||
|
|
done
|
||
|
|
[ -n "$dep" ] && sudo apt-get -y install $dep
|
||
|
|
sudo mkdir -p "/var/lib/chroot/${target}/usr/local/lib/amd64"
|
||
|
|
for i in libbfd libpython; do
|
||
|
|
lib="$({ ldd /usr/bin/ld; ldd /usr/bin/gdb; } |
|
||
|
|
grep -s "$i" | awk '{ print $3 }')"
|
||
|
|
if [ -n "$lib" -a -r "$lib" ]; then
|
||
|
|
sudo cp "$lib" "/var/lib/chroot/${target}/usr/local/lib/amd64"
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
for lib in libssl libcrypt; do
|
||
|
|
for path in /usr/lib /usr/lib/x86_64-linux-gnu; do
|
||
|
|
sudo cp $path/$lib* \
|
||
|
|
"/var/lib/chroot/${target}/usr/local/lib/amd64/" >&/dev/null || :
|
||
|
|
done
|
||
|
|
done
|
||
|
|
for i in gdb ld; do
|
||
|
|
sudo cp /usr/bin/$i "/var/lib/chroot/${target}/usr/local/lib/amd64/"
|
||
|
|
sudo sh -c "cat >'/var/lib/chroot/${target}/usr/local/bin/$i'" <<EOF
|
||
|
|
#!/bin/sh
|
||
|
|
exec /lib64/ld-linux-x86-64.so.2 --library-path /usr/local/lib/amd64 \
|
||
|
|
/usr/local/lib/amd64/$i "\$@"
|
||
|
|
EOF
|
||
|
|
sudo chmod 755 "/var/lib/chroot/${target}/usr/local/bin/$i"
|
||
|
|
done
|
||
|
|
fi
|
||
|
|
|
||
|
|
|
||
|
|
# If the install-build-deps.sh script can be found, offer to run it now
|
||
|
|
script="$(dirname $(readlink -f "$0"))/install-build-deps.sh"
|
||
|
|
if [ -x "${script}" ]; then
|
||
|
|
while :; do
|
||
|
|
echo
|
||
|
|
echo "If you plan on building Chrome inside of the new chroot environment,"
|
||
|
|
echo "you now have to install the build dependencies. Do you want me to"
|
||
|
|
printf "start the script that does this for you (y/n)? "
|
||
|
|
read install_deps
|
||
|
|
case "${install_deps}" in
|
||
|
|
y|Y)
|
||
|
|
echo
|
||
|
|
# We prefer running the script in-place, but this might not be
|
||
|
|
# possible, if it lives on a network filesystem that denies
|
||
|
|
# access to root.
|
||
|
|
tmp_script=
|
||
|
|
if ! sudo /usr/local/bin/"${target%bit}" \
|
||
|
|
sh -c "[ -x '${script}' ]" >&/dev/null; then
|
||
|
|
tmp_script="/tmp/${script##*/}"
|
||
|
|
cp "${script}" "${tmp_script}"
|
||
|
|
fi
|
||
|
|
# Some distributions automatically start an instance of the system-
|
||
|
|
# wide dbus daemon, cron daemon or of the logging daemon, when
|
||
|
|
# installing the Chrome build depencies. This prevents the chroot
|
||
|
|
# session from being closed. So, we always try to shut down any running
|
||
|
|
# instance of dbus and rsyslog.
|
||
|
|
sudo /usr/local/bin/"${target%bit}" sh -c "${script} --no-lib32;
|
||
|
|
rc=$?;
|
||
|
|
/etc/init.d/cron stop >/dev/null 2>&1 || :;
|
||
|
|
/etc/init.d/rsyslog stop >/dev/null 2>&1 || :;
|
||
|
|
/etc/init.d/dbus stop >/dev/null 2>&1 || :;
|
||
|
|
exit $rc"
|
||
|
|
rc=$?
|
||
|
|
[ -n "${tmp_script}" ] && rm -f "${tmp_script}"
|
||
|
|
[ $rc -ne 0 ] && exit $rc
|
||
|
|
break
|
||
|
|
;;
|
||
|
|
n|N)
|
||
|
|
break
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
done
|
||
|
|
echo
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Check whether ~/chroot is on a (slow) network file system and offer to
|
||
|
|
# relocate it. Also offer relocation, if the user appears to have multiple
|
||
|
|
# spindles (as indicated by "${bind_mount}" being non-empty).
|
||
|
|
# We only offer this option, if it doesn't look as if a chroot environment
|
||
|
|
# is currently active. Otherwise, relocation is unlikely to work and it
|
||
|
|
# can be difficult for the user to recover from the failed attempt to relocate
|
||
|
|
# the ~/chroot directory.
|
||
|
|
# We don't aim to solve this problem for every configuration,
|
||
|
|
# but try to help with the common cases. For more advanced configuration
|
||
|
|
# options, the user can always manually adjust things.
|
||
|
|
mkdir -p "${HOME}/chroot/"
|
||
|
|
if [ ! -h "${HOME}/chroot" ] &&
|
||
|
|
! egrep -qs '^[^[:space:]]*/chroot' /etc/fstab &&
|
||
|
|
{ [ -n "${bind_mounts}" -a "${bind_mounts}" != "NONE" ] ||
|
||
|
|
is_network_drive "${HOME}/chroot"; } &&
|
||
|
|
! egrep -qs '/var/lib/[^/]*chroot/.*/chroot' /proc/mounts; then
|
||
|
|
echo "${HOME}/chroot is currently located on the same device as your"
|
||
|
|
echo "home directory."
|
||
|
|
echo "This might not be what you want. Do you want me to move it somewhere"
|
||
|
|
echo "else?"
|
||
|
|
# If the computer has multiple spindles, many users configure all or part of
|
||
|
|
# the secondary hard disk to be writable by the primary user of this machine.
|
||
|
|
# Make some reasonable effort to detect this type of configuration and
|
||
|
|
# then offer a good location for where to put the ~/chroot directory.
|
||
|
|
suggest=
|
||
|
|
for i in $(echo "${bind_mounts}"|cut -d ' ' -f 1); do
|
||
|
|
if [ -d "$i" -a -w "$i" -a \( ! -a "$i/chroot" -o -w "$i/chroot/." \) ] &&
|
||
|
|
! is_network_drive "$i"; then
|
||
|
|
suggest="$i"
|
||
|
|
else
|
||
|
|
for j in "$i/"*; do
|
||
|
|
if [ -d "$j" -a -w "$j" -a \
|
||
|
|
\( ! -a "$j/chroot" -o -w "$j/chroot/." \) ] &&
|
||
|
|
! is_network_drive "$j"; then
|
||
|
|
suggest="$j"
|
||
|
|
else
|
||
|
|
for k in "$j/"*; do
|
||
|
|
if [ -d "$k" -a -w "$k" -a \
|
||
|
|
\( ! -a "$k/chroot" -o -w "$k/chroot/." \) ] &&
|
||
|
|
! is_network_drive "$k"; then
|
||
|
|
suggest="$k"
|
||
|
|
break
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
fi
|
||
|
|
[ -n "${suggest}" ] && break
|
||
|
|
done
|
||
|
|
fi
|
||
|
|
[ -n "${suggest}" ] && break
|
||
|
|
done
|
||
|
|
def_suggest="${HOME}"
|
||
|
|
if [ -n "${suggest}" ]; then
|
||
|
|
# For home directories that reside on network drives, make our suggestion
|
||
|
|
# the default option. For home directories that reside on a local drive,
|
||
|
|
# require that the user manually enters the new location.
|
||
|
|
if is_network_drive "${HOME}"; then
|
||
|
|
def_suggest="${suggest}"
|
||
|
|
else
|
||
|
|
echo "A good location would probably be in \"${suggest}\""
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
while :; do
|
||
|
|
printf "Physical location [${def_suggest}]: "
|
||
|
|
read dir
|
||
|
|
[ -z "${dir}" ] && dir="${def_suggest}"
|
||
|
|
[ "${dir%%/}" == "${HOME%%/}" ] && break
|
||
|
|
if ! [ -d "${dir}" -a -w "${dir}" ] ||
|
||
|
|
[ -a "${dir}/chroot" -a ! -w "${dir}/chroot/." ]; then
|
||
|
|
echo "Cannot write to ${dir}/chroot. Please try again"
|
||
|
|
else
|
||
|
|
mv "${HOME}/chroot" "${dir}/chroot"
|
||
|
|
ln -s "${dir}/chroot" "${HOME}/chroot"
|
||
|
|
for i in $(list_all_chroots); do
|
||
|
|
sudo "$i" mkdir -p "${dir}/chroot"
|
||
|
|
done
|
||
|
|
sudo sed -i "s,${HOME}/chroot,${dir}/chroot,g" /etc/schroot/mount-*
|
||
|
|
break
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Clean up package files
|
||
|
|
sudo schroot -c "${target%bit}" -p -- apt-get clean
|
||
|
|
sudo apt-get clean
|
||
|
|
|
||
|
|
trap '' INT TERM QUIT HUP
|
||
|
|
trap '' EXIT
|
||
|
|
|
||
|
|
# Let the user know what we did
|
||
|
|
cat <<EOF
|
||
|
|
|
||
|
|
|
||
|
|
Successfully installed ${distname} ${arch}
|
||
|
|
|
||
|
|
You can run programs inside of the chroot by invoking the
|
||
|
|
"/usr/local/bin/${target%bit}" command.
|
||
|
|
|
||
|
|
This command can be used with arguments, in order to just run a single
|
||
|
|
program inside of the chroot environment (e.g. "${target%bit} make chrome")
|
||
|
|
or without arguments, in order to run an interactive shell session inside
|
||
|
|
of the chroot environment.
|
||
|
|
|
||
|
|
If you need to run things as "root", you can use "sudo" (e.g. try
|
||
|
|
"sudo ${target%bit} apt-get update").
|
||
|
|
|
||
|
|
Your home directory is shared between the host and the chroot. But I
|
||
|
|
configured "${HOME}/chroot" to be private to the chroot environment.
|
||
|
|
You can use it for files that need to differ between environments. This
|
||
|
|
would be a good place to store binaries that you have built from your
|
||
|
|
source files.
|
||
|
|
|
||
|
|
For Chrome, this probably means you want to make your "out" directory a
|
||
|
|
symbolic link that points somewhere inside of "${HOME}/chroot".
|
||
|
|
|
||
|
|
You still need to run "gclient runhooks" whenever you switch from building
|
||
|
|
outside of the chroot to inside of the chroot. But you will find that you
|
||
|
|
don't have to repeatedly erase and then completely rebuild all your object
|
||
|
|
and binary files.
|
||
|
|
|
||
|
|
EOF
|