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|
# Download kernel updates from Slackware Current for a stable release.
#
# For this to work, make sure the kernel packages are blacklisted in
# /etc/slackpkg/blacklist.
#
# kernel-generic.*
# kernel-huge.*
# kernel-modules.*
# kernel-source.*
#
# This script uses an unusual pattern for running commands on exit, similar to
# Golang's defer. These will not be run when the script is stopped with
# Control+c.
#
# D="[command]; $D"; trap "$D" EXIT
#
echo "Checking kernel updates from Slackware Current (slackpkg)..."
# Get Slackware version.
source /etc/os-release
SOURCE=$(sed -n '
# Remove leading and trailing blanks
s/^[[:blank:]]*//
s/[[:blank:]]*$//
# Only one token is allowed per line
/[[:blank:]]/d
# A single solidus should end the URI
s,[/]*$,/,
# Print the lines beginning with one of the URI schemes we look for
\@^file://@p
\@^cdrom://@p
\@^local://@p
\@^https\{0,1\}://@p
\@^ftps\{0,1\}://@p' /etc/slackpkg/mirrors)
SOURCE="$(echo $SOURCE | sed 's/-$VERSION/-current/')"
yes y | slackpkg -mirror="$SOURCE" -batch=on -default_answer=yes update
D="yes | slackpkg -batch=on -default_answer=yes update"; trap "$D" EXIT
PACKAGE_UPDATES="$(mktemp /tmp/slack-autoupdate.XXXXXX)"
D="rm -f ${PACKAGE_UPDATES}; $D"; trap "$D" EXIT
mv /etc/slackpkg/blacklist /etc/slackpkg/blacklist.orig
touch /etc/slackpkg/blacklist
D="mv -f /etc/slackpkg/blacklist.orig /etc/slackpkg/blacklist; $D"; trap "$D" EXIT
slackpkg -batch=on -default_answer=n \
upgrade kernel \
| grep "\.t.z$" \
| tee "$PACKAGE_UPDATES" \
|| exit "$?"
if [ ! -s "$PACKAGE_UPDATES" ]; then
# No updates
exit 0
fi
while read PKG; do
PKG_URL="$(
grep "${PKG}$" /var/lib/slackpkg/CHECKSUMS.md5 \
| tr -s ' ' \
| cut -f 2 -d ' '
)" || exit "$?"
wget \
--directory-prefix="$STAGING_DIR" \
"${SOURCE}${PKG_URL}" \
"${SOURCE}${PKG_URL}.asc" \
|| exit 1
done <"$PACKAGE_UPDATES"
if ! gpg2 --verify-files "$STAGING_DIR"/kernel-*.asc; then
echo "gpg verification failed"
exit 1
fi
(
# Redirect this subshell's standard output to info file.
exec 1>>"$UPDATE_INFO"
echo "## Slackware current kernel updates"
echo
while read PKG; do
echo " - $PKG"
done <"$PACKAGE_UPDATES"
echo
)
|
