void-packages/xbps-src/shutils/chroot.sh

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#-
# Copyright (c) 2008-2009 Juan Romero Pardines.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#-
#
# Script to install packages into a sandbox in masterdir.
# Actually this needs the xbps-base-chroot package installed.
#
# Umount stuff if SIGINT or SIGQUIT was caught
trap umount_chroot_fs INT QUIT
prepare_chroot()
{
local f=
# Create some required files.
touch $XBPS_MASTERDIR/etc/mtab
for f in run/utmp log/btmp log/lastlog log/wtmp; do
touch -f $XBPS_MASTERDIR/var/$f
done
for f in run/utmp log/lastlog; do
chmod 644 $XBPS_MASTERDIR/var/$f
done
cat > $XBPS_MASTERDIR/etc/passwd <<_EOF
root:x:0:0:root:/root:/bin/bash
nobody:x:99:99:Unprivileged User:/dev/null:/bin/false
_EOF
# Default group list as specified by LFS.
cat > $XBPS_MASTERDIR/etc/group <<_EOF
root:x:0:
bin:x:1:
sys:x:2:
kmem:x:3:
tty:x:4:
tape:x:5:
daemon:x:6:
floppy:x:7:
disk:x:8:
lp:x:9:
uucp:x:10:
audio:x:11:
video:x:12:
utmp:x:13:
usb:x:14:
cdrom:x:15:
mail:x:34:
nogroup:x:99:
users:x:1000:
_EOF
# Default file as in Ubuntu.
cat > $XBPS_MASTERDIR/etc/hosts <<_EOF
127.0.0.1 xbps localhost.localdomain localhost
127.0.1.1 xbps
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
_EOF
cp -f /etc/resolv.conf $XBPS_MASTERDIR/etc
# Create /bin/sh symlink to bash
cd $XBPS_MASTERDIR/bin && ln -sf bash sh
touch $XBPS_MASTERDIR/.xbps_perms_done
}
rebuild_ldso_cache()
{
echo -n "==> Rebuilding chroot's dynamic linker cache..."
chroot $XBPS_MASTERDIR /sbin/ldconfig -c /etc/ld.so.conf
chroot $XBPS_MASTERDIR /sbin/ldconfig -C /etc/ld.so.cache
echo " done."
}
create_busybox_links()
{
local busyboxdir=$XBPS_MASTERDIR/usr/lib/busybox-initramfs
local lbindir=$XBPS_MASTERDIR/usr/local/bin
[ -f $XBPS_MASTERDIR/.busybox_done ] && return 0
[ ! -d ${lbindir} ] && mkdir -p ${lbindir}
# Create other symlinks in /usr/local/bin
for f in $(find ${busyboxdir} -type l); do
cd ${lbindir} || return 1
[ "$(basename $f)" = "sh" ] && continue
ln -s ../../lib/busybox-initramfs/bin/busybox $(basename $f)
done
touch -f $XBPS_MASTERDIR/.busybox_done
}
install_xbps_utils()
{
local needed fetch_cmd
local xbps_prefix=$XBPS_MASTERDIR/usr/local
for f in bin cmpver digest pkgdb; do
if [ ! -x $xbps_prefix/sbin/xbps-${f}.static ]; then
needed=yes
fi
done
if [ -n "$needed" ]; then
echo "=> Installing the required XBPS utils."
chroot $XBPS_MASTERDIR sh -c \
"echo /usr/local/lib > /etc/ld.so.conf"
fetch_cmd="$(which $XBPS_FETCH_CMD 2>/dev/null)"
if [ -z "$fetch_cmd" ]; then
echo "Unexistent XBPS_FETCH_CMD specified!"
exit 1
fi
cp -f $fetch_cmd $xbps_prefix/sbin
for f in bin cmpver digest pkgdb repo; do
cp -f $XBPS_INSTALLDIR/sbin/xbps-$f.static \
$xbps_prefix/sbin/
done
cp -f $XBPS_INSTALLDIR/sbin/xbps-src $xbps_prefix/sbin
if [ -z $XBPS_INSTALLDIR ]; then
installdir=/usr/share/xbps-src
else
installdir=$XBPS_INSTALLDIR/share/xbps-src
fi
cp -a $installdir $xbps_prefix/share
rebuild_ldso_cache
fi
}
xbps_chroot_handler()
{
local action="$1"
local pkg="$2"
local only_destdir="$3"
local path="/usr/local/sbin:/bin::/sbin:/usr/bin:/usr/sbin:/usr/local/bin"
[ -z "$action" -o -z "$pkg" ] && return 1
[ "$action" != "configure" -a "$action" != "build" -a \
"$action" != "install" -a "$action" != "chroot" ] && return 1
create_busybox_links
install_xbps_utils
mount_chroot_fs
if [ ! -f $XBPS_MASTERDIR/.xbps_perms_done ]; then
echo -n "==> Preparing chroot on $XBPS_MASTERDIR... "
prepare_chroot
echo "done."
fi
if [ "$action" = "chroot" ]; then
env in_chroot=yes LANG=C PATH=$path \
chroot $XBPS_MASTERDIR /bin/sh
else
[ -n "$only_destdir" ] && \
local lenv="install_destdir_target=yes"
env in_chroot=yes LANG=C PATH=$path \
${lenv} chroot $XBPS_MASTERDIR \
/usr/local/sbin/xbps-src $action $pkg
fi
msg_normal "Exiting from the chroot on $XBPS_MASTERDIR."
umount_chroot_fs
}
mount_chroot_fs()
{
local cnt=
REQFS="sys proc dev xbps xbps_builddir xbps_destdir \
xbps_packagesdir xbps_srcdistdir"
if [ -d "$XBPS_CROSS_DIR" ]; then
local cross=yes
REQFS="$REQFS xbps_crossdir"
fi
for f in ${REQFS}; do
if [ ! -f $XBPS_MASTERDIR/.${f}_mount_bind_done ]; then
echo -n "=> Mounting $f in chroot... "
local blah=
case $f in
xbps) blah=$XBPS_DISTRIBUTIONDIR;;
xbps_builddir) blah=$XBPS_BUILDDIR;;
xbps_destdir) blah=$XBPS_DESTDIR;;
xbps_srcdistdir) blah=$XBPS_SRCDISTDIR;;
xbps_packagesdir) blah=$XBPS_PACKAGESDIR;;
xbps_crossdir)
[ -n $cross ] && blah=$XBPS_CROSS_DIR
;;
*) blah=/$f;;
esac
[ ! -d $blah ] && echo "failed." && continue
mount --bind $blah $XBPS_MASTERDIR/$f
if [ $? -eq 0 ]; then
echo 1 > $XBPS_MASTERDIR/.${f}_mount_bind_done
echo "done."
else
echo "failed."
fi
else
cnt=$(cat $XBPS_MASTERDIR/.${f}_mount_bind_done)
cnt=$(($cnt + 1))
echo $cnt > $XBPS_MASTERDIR/.${f}_mount_bind_done
fi
done
unset f
}
umount_chroot_fs()
{
local fs=
local dir=
local cnt=
for fs in ${REQFS}; do
[ ! -f $XBPS_MASTERDIR/.${fs}_mount_bind_done ] && continue
cnt=$(cat $XBPS_MASTERDIR/.${fs}_mount_bind_done)
if [ $cnt -gt 1 ]; then
cnt=$(($cnt - 1))
echo $cnt > $XBPS_MASTERDIR/.${fs}_mount_bind_done
else
echo -n "=> Unmounting $fs from chroot... "
umount -f $XBPS_MASTERDIR/$fs
if [ $? -eq 0 ]; then
rm -f $XBPS_MASTERDIR/.${fs}_mount_bind_done
echo "done."
else
echo "failed."
fi
fi
unset fs
done
for dir in ${EXTDIRS}; do
[ -f $XBPS_MASTERDIR/.${dir}_mount_bind_done ] && continue
[ -d $XBPS_MASTERDIR/$dir ] && rmdir $XBPS_MASTERDIR/$dir
done
}
[ -n "$base_chroot" ] && return 0
. $XBPS_SHUTILSDIR/builddep_funcs.sh
check_installed_pkg xbps-base-chroot-0.11
if [ $? -ne 0 ]; then
echo "The '$pkgname' package requires to be installed in a chroot."
echo "Please install 'xbps-base-chroot>=0.11' and try again."
exit 1
fi
if [ "$(id -u)" -ne 0 ]; then
if [ -n "$origin_tmpl" ]; then
. $XBPS_SHUTILSDIR/tmpl_funcs.sh
reset_tmpl_vars
run_file $XBPS_TEMPLATESDIR/$origin_tmpl/template
fi
echo "The '$pkgname' package requires to be installed in a chroot."
echo "You cannot do this as normal user, try again being root."
exit 1
fi
msg_normal "Entering into the chroot on $XBPS_MASTERDIR."
EXTDIRS="xbps xbps_builddir xbps_destdir xbps_packagesdir \
xbps_srcdistdir xbps_crossdir"
REQDIRS="bin sbin tmp var sys proc dev usr/local/etc ${EXTDIRS}"
for f in ${REQDIRS}; do
[ ! -d $XBPS_MASTERDIR/$f ] && mkdir -p $XBPS_MASTERDIR/$f
done
unset f REQDIRS
XBPSSRC_CF=$XBPS_MASTERDIR/usr/local/etc/xbps-src.conf
echo "XBPS_DISTRIBUTIONDIR=/xbps" > $XBPSSRC_CF
echo "XBPS_MASTERDIR=/" >> $XBPSSRC_CF
echo "XBPS_DESTDIR=/xbps_destdir" >> $XBPSSRC_CF
echo "XBPS_PACKAGESDIR=/xbps_packagesdir" >> $XBPSSRC_CF
echo "XBPS_BUILDDIR=/xbps_builddir" >> $XBPSSRC_CF
echo "XBPS_SRCDISTDIR=/xbps_srcdistdir" >> $XBPSSRC_CF
echo "XBPS_CFLAGS=\"$XBPS_CFLAGS\"" >> $XBPSSRC_CF
echo "XBPS_CXXFLAGS=\"\$XBPS_CFLAGS\"" >> $XBPSSRC_CF
echo "XBPS_FETCH_CMD=$XBPS_FETCH_CMD" >> $XBPSSRC_CF
if [ -n "$XBPS_MAKEJOBS" ]; then
echo "XBPS_MAKEJOBS=$XBPS_MAKEJOBS" >> $XBPSSRC_CF
fi
if [ -n "$XBPS_CROSS_TARGET" -a -d "$XBPS_CROSS_DIR" ]; then
echo "XBPS_CROSS_TARGET=$XBPS_CROSS_TARGET" >> $XBPSSRC_CF
echo "XBPS_CROSS_DIR=/xbps_crossdir" >> $XBPSSRC_CF
fi