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|
#!/bin/bash
# slackupgrade - full upgrade of a Slackware installation
# Copyright (C) 2019-2020 Sergey Poznyakoff.
#
# Slackware-upgrade-system is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as published
# by the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# Slackware-upgrade-system is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with slackupgrade. If not, see
# <http://www.gnu.org/licenses/>.
set -e
# Configuration directory
: ${SLACKUPGRADE_CONFDIR:=/etc/slackupgrade}
: ${SLACKUPGRADE_PKGDIR:=/var/slackupgrade}
: ${SLACKUPGRADE_MIRRORS_URL:=https://mirrors.slackware.com/slackware}
# Slackware root directory
rooturl=
# Log file name
logfile=
# 'y', if dry-run mode is requested
dry_run=
# If 'y', don't ask anything, assume "y" as answer to all quieries
assume_y=
# Output verbosity: '' - normal, 'v' - verbose, 'q' - quiet
verbosity=
# If 'y', install all packages
install_all=
# Names of the series that should be installed in addition to already installed
# packages. Ignored, if install_all is set.
install_series=
# Names of additional packages.
install_packages=
# Name of the keep-list file.
keep_file=
# Max. count of backup files to keep
max_backup=4
# Display progress bar when downloading
progressbar=1
# Operating mode. Possible values:
# INCR Incremental mode. Archive for each package is downloaded prior
# to its nstallation and removed immediately afterwards. This
# ensures minimal disk space requirements.
# SAFE Safe mode. All archives are first downloaded to
# SLACKUPGRADE_PKGDIR and then installed. Each archive is removed
# immediately after installing from it. This requires some 2.5G
# of disk space at the beginning, which will be freed by the end
# of upgrade.
# AUTO Select incremental mode if there is enough disk space. If not,
# ask the user if it is OK to proceed in incremental mode.
opmode=AUTO
# Internal variables
remote=
tempdir=${TMP:-/tmp}/slackupg.$$
strip_series=0
installed_list=$tempdir/installed.list
avail_index=$tempdir/avail.index
avail_list=$tempdir/avail.list
series_names="a
ap
d
e
f
k
l
n
t
tcl
x
xap
xfce
y
"
onexit_remove_list=
function onexit_remove() {
onexit_remove_list="$onexit_remove_list${onexit_remove_list:+ }$1"
}
function tempdir_create() {
u=$(umask)
umask 077
mkdir $tempdir
umask $u
}
function tempdir_remove() {
rm -rf $tempdir $onexit_remove_list
}
function usage() {
cat <<EOF
usage: $0 [-anqvy] [-k FILE] [-s SERIES] [DIRECTORY]
Upgrade Slackware installation
Options are:
-a install all series except kde*
-h display this help list and exit
-k FILE preserve packages listed in FILE
-n dry-run mode: do nothing, print what would have been done
-p PACKAGE install additional package
-q quiet mode: suppress all messages, except errors
-s SERIES additionally install all packages from SERIES
-v display messages about individual packages
-y assume "yes" to all queries
EOF
}
function getyn() {
if [ "$assume_y" = y ]; then
/bin/true
else
local dfl=$1
shift
if [ -t 0 ]; then
case "$dfl" in
[yY]) dfl_s=" [Y/n]";;
[nN]) dfl_s=" [y/N]";;
*) dfl_s=""; dlf="";;
esac
printf "%s$dfl_s? " "$*"
read REPLY </dev/tty
fi
case "${REPLY:-$dfl}" in
[yY]*) /bin/true;;
*) /bin/false;;
esac
fi
}
function info() {
echo "$0: $*"
if [ -n "$logfile" ]; then
echo >>$logfile "$0: $(date): $*"
fi
}
function error() {
echo >&2 "$0: $*"
if [ -n "$logfile" ]; then
echo >>$logfile "$0: $(date): $*"
fi
}
# Abnormal termination: print error message, remove temporary directory
# and terminate with status 1.
function abend() {
error "$@"
tempdir_remove
exit 1
}
function package_file_name() {
pkg=$(awk -vname=$1 '$1==name { print $2 }' $avail_index)
if [ -z "$pkg" ]; then
error "package $name not found in index (should not happen!)"
else
echo $pkg
fi
}
# check_package_md5sum PKG ARCHIVE
# Verifies the MD5 sum of the ARCHIVE file for Slackware package PKG
function check_package_md5sum() {
if [ -n "$checksums" ]; then
awk -vcname="$1" -vdname="$2" \
'$2==cname { print $1 " " dname }' $checksums | \
md5sum --status --check
fi
}
# all_package_names
# Lists all packages from the Slackware distribution.
function all_package_names() {
grep -v '.*/kde[^/]*/' $avail_index | cut -d ' ' -f 1
}
# series_package_names S
# Lists the names of packages in Slackware series S.
function series_package_names() {
grep '.*/'"$1/" $avail_index | cut -d ' ' -f 1
}
function catfile() {
echo $rooturl/${1#./}
}
# download_curl FILE URL
# Downloads file from URL to FILE using curl.
function download_curl {
curl $CURL_OPTIONS -L -sS -o$1 $2
}
# download_wget LOCAL URL
# Downloads file from URL to FILE using wget.
function download_wget {
if ! wget $WGET_OPTIONS -nv -o wget.log -O$1 $2; then
grep -i "failed\|error" wget.log
/bin/false
fi
}
# dnfunc_init
# Initializes the downloader function to wget or curl.
function dnfunc_init() {
if [ -z "$dnfunc" ]; then
if wget --version >/dev/null 2>&1; then
dnfunc=download_wget
elif curl --version >/dev/null 2>&1; then
dnfunc=download_curl
else
abend "neither curl nor wget is installed"
fi
fi
}
# download FILE
# Downloads package FILE from the remote server. On success, returns the
# full pathname of the downloaded copy.
function download() {
local name=$SLACKUPGRADE_PKGDIR/$(basename $1)
local url=$(catfile $1)
if $dnfunc $name $url; then
echo $name
fi
}
# getfile PKG [GPG]
# Retrieves the package archive file for the package PKG. If second argument
# is non-empty, verifies the GPG signature of the file.
# If checksums file is available, verifies also the MD5 checksum of the file.
#
# Returns full pathname of the retrieved file.
function getfile() {
local name=$(if [ -n "$remote" ]; then
download $1
elif [ $strip_series -eq 1 ]; then
catfile $(basename $1)
else
catfile $1
fi)
if [ -n "$2" ]; then
ascname=$(if [ -n "$remote" ]; then
download $1.asc
else
catfile $1.asc
fi)
if [ -n "$ascname" ]; then
if ! err=$(${GPG:-gpg} --verify $ascname $name 2>&1 >/dev/null)
then
error "$err"
error "gpg verification failed for $name"
dropfile $ascname
return
else
dropfile $ascname
fi
else
error "$name: no clearsign signature file found"
return
fi
fi
if [ -n "$checksums" ] && ! check_package_md5sum $1 $name; then
error "ERROR: $1: checksum failed"
name=
fi
echo $name
}
# dropfile FILE
# Removes FILE, if it has been downloaded from the remote repository,
function dropfile() {
if [ -n "$remote" ] || [ $strip_series -eq 1 ]; then
rm $1
fi
}
# upgrade_package [OPTIONS] FILE
# Runs upgradepkg with the supplied arguments and captures its output to
# the log file. In verbose mode, filters parts of it to the stdout.
function upgrade_local() {
if [ -n "$dry_run" ]; then
echo "upgradepkg $@"
elif [ "$verbosity" = 'v' ]; then
upgradepkg "$@" | \
tee -a $logfile | \
sed -n -e '/^| Upgrading/s/^| //p'
else
upgradepkg "$@" >> $logfile
fi
}
# upgrade_package NAME [OPTIONS]
# Upgrades the package NAME. OPTIONS will be passed to upgradepkg verbatim.
function upgrade_package() {
local name=$1
shift
if [ -n "$dry_run" ]; then
echo "upgradepkg $@ $name"
else
file=$(getfile $name)
if [ -n "$file" ]; then
upgrade_local $@ $file
dropfile $file
fi
fi
}
# version_gt A B
# Returns true if version A is greater than B.
function version_gt() {
test "$(echo "$@" | tr " " "\n" | sort -V | head -n 1)" != "$1"
}
# backup FILE [DRY_RUN]
# Create a backup copy of FILE, named FILE~
# Before, rename each file matching the pattern FILE~<N>, where <N> is a
# decimal digit, to FILE~<N+1>. Rename FILE~ to FILE~1.
#
# Second argument, if present, enables the dry-run mode.
#
function backup() {
local dir=$(dirname $1)
local stem=$(basename $1)
local p
if [ -n "$2" ]; then
p=echo
else
p=
fi
if [ -r "$1" ]; then
if [ -r "$1~" ]; then
find $dir -name "$stem*" -printf '%f\n' |\
sed -n -r -e 's/(.+)~([[:digit:]]+)$/\2 \1/p' |\
sort +0 -1 -n -r |\
while read n stem
do
if [ -n "$max_backup" ] && [ $n -ge $max_backup ]; then
$p rm $dir/${stem}~$n
else
$p mv $dir/${stem}~$n $dir/${stem}~$((n + 1))
fi
done
$p mv "$1~" "$1~1"
fi
$p mv "$1" "$1~"
fi
}
# disk_avail_size DIR
# Returns the available disk size (in kilobytes) on the device where
# DIR is located
function disk_avail_size() {
df -k --output=target,avail | \
sed 1d | \
awk -vdir=$1 \
'BEGIN { dirlen=length(dir) }
{ len = length($1)
if (len <= dirlen && substr(dir, 1, len) == $1) {
if (mp_len < len) {
mp_len = len
mp_avail = $2
}
}
}
END { print mp_avail }'
}
# Downloads all selected packages to the spool directory.
function download_all() {
info "downloading packages"
cols=$(tput cols 2>/dev/null || stty size 2>/dev/null | cut -d' ' -f2)
if [ ${cols:-0} -lt 10 ]; then
progressbar=0
fi
if [ $progressbar -eq 1 ]; then
total=$(wc -l candidates | cut -d ' ' -f 1)
width=$(( $cols - 7 ))
fi
i=0
cat candidates |
while read pkg
do
if [ $progressbar -eq 1 ]; then
n=$(( $i * $width / $total ))
s=$(printf "%${n}s" ' '|sed 's/./=/g')
printf "\r% 3d%% %s>" $(( $i * 100 / $total)) $s
fi
if [ -z "$dry_run" ]; then
file=$(getfile $(package_file_name $pkg))
if [ -z "$file" ]; then
abend "failed to download $pkg"
fi
fi
i=$(( $i + 1 ))
done || exit $?
if [ $progressbar -eq 1 ]; then
s=$(printf "%${width}s" ' '|sed 's/./=/g')
printf "\r% 3d%% %s|\n" 100 $s
fi
}
# ##########
# Main
# ##########
while getopts "ahIknp:qSs:vy" OPTION
do
case $OPTION in
I) opmode=INCR;;
S) opmode=SAFE;;
a) install_all=y;;
h) usage
exit 0;;
k) keep_file=$OPTARG;;
n) dry_run=y;;
p) install_packages="$install_packages $OPTARG";;
q) verbosity=q;;
v) verbosity=v;;
s) install_series="$install_series $OPTARG";;
y) assume_y=y;;
*) usage >&2
exit 1
esac
done
shift $(($OPTIND - 1))
case $# in
0) ;;
1) rooturl=$1;;
*) error "unexpected arguments"
usage >&2
exit 1
esac
if [ $(id -u) != "0" ]; then
abend "must be root"
fi
# Sanity check
if [ ! -s /etc/os-release ]; then
abend "/etc/os-release doesn't exist"
fi
. /etc/os-release
if [ "$ID" != "slackware" ]; then
abend "this doesn't seem to be a Slackware installation"
fi
case "$(uname -m)" in
i?86) ARCH=;;
x86_64) ARCH=64;;
*) abend "architecture $(uname -m) is not yet supported"
esac
if [ ! -d $SLACKUPGRADE_PKGDIR ]; then
mkdir -p $SLACKUPGRADE_PKGDIR || abend "can't create $SLACKUPGRADE_PKGDIR"
fi
tempdir_create
cd $tempdir
if [ -z "$rooturl" ]; then
dnfunc_init
if ! $dnfunc index.html $SLACKUPGRADE_MIRRORS_URL; then
abend "exiting"
exit 1
fi
version_rx=$(echo $VERSION | sed -e 's/\./\\./g')
new_version=$(cat index.html |\
tr '<' '\n' |\
sed -n -r \
-e 's/.*^a href="slackware'$ARCH'-([[:digit:].]+)\/?".*/\1/p'|\
sed -n -e "/$version_rx/{" -en -ep -e '}' )
if [ -n "$new_version" ]; then
rooturl="$SLACKUPGRADE_MIRRORS_URL/slackware$ARCH-$new_version"
info "using $rooturl as distribution top-level URL"
else
abend "can't find distribution newer than $VERSION; please supply URL if you have any"
fi
fi
# Check if rooturl is local or remote
case $rooturl in
/*) unset remote
;;
http://*|https://*|ftp://*|ftps://*)
dnfunc_init
remote=1
;;
*) abend "root directory must be absolute file name or URL"
esac
if [ -z "$remote" ]; then
# Check if rooturl exists and contains the necessary files and directories
if [ ! -d $rooturl ]; then
abend "$rooturl does not exist"
fi
# Safe mode is meaningless with local repository
opmode=INCR
fi
# Check if rooturl contains all we need
info "verifying distribution"
#
# Download CHECKSUMS.md5. So far it is the only file that is gpg-checked.
# For the rest we rely on MD5 sums.
checksums=$(getfile CHECKSUMS.md5 gpg)
if [ -z "$checksums" ]; then
abend "CHECKSUMS.md5 not found in $rooturl"
fi
onexit_remove $checksums
announce=$(tail +13 $checksums | \
sed -n -r\
-e 's/^[0-9a-fA-F]+[[:space:]]+(\.\/ANNOUNCE\.[[:digit:]_]+)$/\1/p')
if [ -z "$announce" ]; then
abend "ANNOUNCE not found in $rooturl"
fi
file=$(getfile $announce)
if [ -z "$file" ]; then
abend "file $announce not found in $rooturl"
fi
onexit_remove $file
newversion=$(echo "$announce" | sed -e 's/\.\/ANNOUNCE\.//' -e 's/_/./g')
if [ -z "$newversion" ]; then
abend "cannot determine new version"
fi
# Create list and index of available files
tail +13 $checksums | \
sed -r \
-n \
-e 's/^[0-9a-fA-F]+[[:space:]]+(\.\/slackware(64)?\/.*\/(.*)-[^-]+-(i386|x86(_64)?|arm|noarch|fw)-[[:digit:]]+(_.*)?\.t.z)$/\3 \1/p' | \
tee $avail_index | awk '{print $1}' | sort > $avail_list
# Initialize log file name
logstem=/var/log/slackupgrade-$VERSION-$newversion${dry_run:+.dry_run}
logfile=$logstem.log
backup $logfile
info "planning upgrade of Slackware $VERSION to $newversion${dry_run:+ (DRY RUN MODE)}"
remove_report=$logstem.removed
backup $remove_report
# Check if pkgdir exists and contains the necessary files and directories
for series in $series_names
do
n=$(sed -n -r -e 's/^[^[:space:]]+[[:space:]]+(\.\/slackware(64)?\/'$series'\/.*\.t.z)$/\1/p' $avail_index | head -1)
if [ -z "$n" ]; then
abend "no files in series $series"
fi
file=$(getfile $n)
if [ -z "$file" ]; then
abend "exiting"
fi
dropfile $file
done
# Build a list of installed packages
ls /var/log/packages |\
sed -r -e 's/-[^-]+-(i386|x86(_64)?|arm|noarch|fw)-[[:digit:]]+(_.*)?//' |\
sort -u > $installed_list
# Build a list of packages to install
(if [ -n "$install_all" ]; then
all_package_names
else
comm -1 -2 $installed_list $avail_list
fi
for s in $install_series
do
series_package_names $s
done
if [ -n "$install_packages" ]; then
echo $install_packages
fi) | sort -u > candidates.$$
# Build a list of packages that should be removed after install
comm -2 -3 $installed_list candidates.$$ > remove.list.$$
if [ -s "$keep_file" ]; then
grep -v '^#' $keep_file | \
tr -s '\n' | sort -u | comm -2 -3 remove.list.$$ - > remove.list
rm remove.list.$$
else
mv remove.list.$$ remove.list
fi
# Create $remove_report and the list of installation candidates.
if [ -f "$SLACKUPGRADE_CONFDIR/$VERSION-$newversion.repl" ]; then
info "reading $SLACKUPGRADE_CONFDIR/$VERSION-$newversion.repl"
# Update candidates and save the replacement map in a temporary.
awk '{ sub(/#.*$/,""); sub(/[[:space:]]+$/,"") }
/\\$/ { sub(/\\$/,""); p = p $0; next }
NF == 0 { if (p) print p; p = ""; next }
{ print p $0; p="" }' \
$SLACKUPGRADE_CONFDIR/$VERSION-$newversion.repl | \
sort +0 -1 | \
tee rename.$$ | \
join - remove.list | \
cut -d ' ' -f 2- | \
tr ' ' '\n' | \
cat - candidates.$$ | \
sort -u > candidates
# Use the temporary to remove the original package names from the report.
awk '{print $1}' rename.$$ | \
comm -13 - remove.list > $remove_report
# Clean up
rm rename.$$
else
cp remove.list $remove_report
mv candidates.$$ candidates
fi
# Disable interrupts during critical section
trap '' HUP INT QUIT ABRT
if [ -s $remove_report -a "$verbosity" != 'q' ]; then
(cat <<EOF
INFO: The following packages will be removed. You will have to manually
restore them after the upgrade. The package names are preserved for you
in the file $remove_report:
EOF
cat $remove_report) | ${PAGER:-more}
fi
if ! version_gt $newversion $VERSION; then
if ! getyn n "Distribution version $newversion is same or lower than current version $VERSION. Downgrade"; then
tempdir_remove
error "upgrade canceled"
exit 0
fi
fi
if ! getyn n "Ready for upgrade from $VERSION to $newversion. Continue"; then
tempdir_remove
error "upgrade canceled"
exit 0
fi
if [ $opmode != INCR ]; then
# Automatic mode selection. Compute total compressed size of packages
# to be installed and compare it with available disk space on the device
# hosting SLACKUPGRADE_PKGDIR. Select safe mode if there is enough space,
# otherwise ask if the user wishes to continue in incremental mode.
packages=$(download PACKAGES.TXT)
if [ -z "$packages" ]; then
abend "PACKAGES.TXT not found in $rooturl"
fi
onexit_remove $packages
download_size=$(sed -n -r \
-e '/PACKAGE NAME:[[:space:]]*/{' \
-e 's///' \
-e 's/^(.*)-[^-]+-(i386|x86(_64)?|arm|noarch|fw)-[[:digit:]]+(_.*)?\.t.z$/\1 &/' \
-e h \
-e '}' \
-e '/PACKAGE SIZE \(compressed\):[[:space:]]*/{' \
-e 's///' \
-e H \
-e x \
-e 's/\n/ /' \
-e p \
-e '}' \
$packages | \
sort +0 -1 | \
join candidates - | \
awk '{ if ($4 == "M") s += $3*1024
else if ($4 == "G") s += $3*1024*1024
else s += $3 }
END { print s }')
avail_size=$(disk_avail_size $SLACKUPGRADE_PKGDIR)
if [ $avail_size -lt $download_size ]; then
error "not enough free space in $SLACKUPGRADE_PKGDIR"
error "needed ${download_size}K, but only ${avail_size}K available"
if [ $opmode = INCR ]; then
abend "terminating"
fi
cat >&2 <<EOT
Safe mode is the default for slackupgrade. In this mode, the program would
first download all packages from the remote site, verify them and then
proceed to actual upgrade. This ensures that even if something goes wrong
during the upgrade, you have all tarballs at hand and can resume from
where you left after fixing the problem.
This mode cannot be used due to the disk space shortage. Slackupgrade can
nevertheless continue in incremental download mode. In this mode, it will
download and install packages one by one. This takes more time and is less
error prone. If you choose this mode, type 'Y' at the prompt below. Other-
wise, type 'N' to terminate the program, and follow the instructions you
will get.
EOT
if getyn n "Continue in incremental download mode"; then
opmode=INCR
else
cat >&2 <<EOT
Please make sure the slackupgrade spool directory can accomodate at least
${download_size}K of data. To do so, either free sufficient disk space on
the device where $SLACKUPGRADE_PKGDIR resides, or set the SLACKUPGRADE_PKGDIR
environment variable to the full pathname of the new spool directory,
EOT
error "Terminating."
exit 0
fi
else
# Download all packages
download_all
# Switch to the local installation mode
rooturl=$SLACKUPGRADE_PKGDIR
opmode=INCR
# Instruct getfile to strip off the series directory from the
# package names.
strip_series=1
# Disable remote indicator and checksum verification (all archives
# have already been verified during the download).
unset remote checksums
fi
fi
info "starting upgrade of Slackware $VERSION to $newversion${dry_run:+ (DRY RUN MODE)}"
pkg_names="glibc-solibs pkgtools tar xz findutils"
if [ -n "$remote" ]; then
# If using the remote repository, add wget and the libraries it
# depends on. Wget is preferred over curl because of its limited
# number of dependencies.
pkg_names="$pkg_names aaa_elflibs wget"
fi
pkg_re='^('$(echo "$pkg_names" | sed -r -e 's/ +/|/g')')$'
pkg_files=
info "downloading essential packages"
for pkg in $pkg_names
do
file=$(getfile $(package_file_name $pkg))
if [ -z "$file" ]; then
abend "failed to download $pkg"
fi
onexit_remove $file
pkg_files="$pkg_files${pkg_files:+ }$file"
done
info "installing essential packages"
upgrade_local $pkg_files
if [ -n "$remote" ]; then
# Until now we have been using whatever downloader that is available
# (curl or wget). Switch to wget: it has all its dependecies installed.
dnfunc=download_wget
fi
# Upgrade the rest of packages
egrep -v "$pkg_re" candidates |\
while read name
do
package_file_name $name
done | sort -u | \
while read pkg
do
s=$(basename ${pkg%/*})
if [ "$prev" != "$s" ]; then
info "installing selected files from series $s"
prev=$s
fi
upgrade_package $pkg --install-new
done
if [ -s remove.list ]; then
info "removing packages"
if [ -n "$dry_run" ]; then
:
elif [ "$verbosity" = 'v' ]; then
removepkg $(cat remove.list) | tee -a $logfile | grep '^Removing package'
else
removepkg $(cat remove.list) >> $logfile
fi
info "see $remove_report for the list of packages that have been removed"
fi
info "upgrade finished; see $logfile for details"
tempdir_remove
conffiles=$logstem.new
backup $conffiles
find /etc /usr/lib*/ /usr/share/vim -name "*.new" 2>/dev/null | \
sort > $conffiles
if [ ! -s "$conffiles" ]; then
rm $conffiles
fi
if [ "$verbosity" != 'q' ]; then
echo "IMPORTANT!"
if [ -s "$conffiles" ]; then
cat <<EOF
Some of your config files may need fixing. Please check the files from this
list and compare them with their counterparts without the ".new" suffix.
Remove the "*.new" files when finished. The list of files follows:
EOF
cat $conffiles
cat <<EOF
For your convenience, this list is preserved in the file $conffiles.
EOF
fi
cat <<EOF
*Before* attempting to reboot your system, please make sure that the
bootloader has been updated for the new kernel!
Good luck!
EOF
fi
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