mirror of
https://github.com/MariaDB/server.git
synced 2025-01-16 03:52:35 +01:00
cda072bb4b
- Go back to using $MAJOR_VER instead of hard-coded version strings where possible. - Default to 'auto' in NUMJOBS instead of just 1. Will make mysql-test-run faster. - Unify autopkgtest with latest version in Debian, use eatmydata to make mysql-test-run faster. - Salsa-CI: Remove obsolete 'artifacts: true' as that is the default value. - Salsa-CI: Clean away obsolete temporary fixes. - Salsa-CI: Unify with salsa-ci.yml in Debian, including test upgrades from Bullseye to Debian unstable.
273 lines
12 KiB
Bash
273 lines
12 KiB
Bash
#!/bin/bash
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set -e
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. /usr/share/debconf/confmodule
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# Automatically set version to ease maintenance of this file
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MAJOR_VER="${DPKG_MAINTSCRIPT_PACKAGE#mariadb-server-}"
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if [ -n "$DEBIAN_SCRIPT_DEBUG" ]; then set -v -x; DEBIAN_SCRIPT_TRACE=1; fi
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${DEBIAN_SCRIPT_TRACE:+ echo "#42#DEBUG# RUNNING $0 $*" 1>&2 }
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export PATH=$PATH:/sbin:/usr/sbin:/bin:/usr/bin
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# This command can be used as pipe to syslog. With "-s" it also logs to stderr.
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ERR_LOGGER="logger -p daemon.err -t mariadb-server-$MAJOR_VER.postinst -i"
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# Specify syslog tag name so it is clear the entry came from this postinst script.
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# This will make an error in a logged command immediately apparent by aborting
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# the install, rather than failing silently and leaving a broken install.
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set -o pipefail
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case "$1" in
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configure)
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# This is needed because mysql_install_db removes the pid file in /run
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# and because changed configuration options should take effect immediately.
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# In case the server wasn't running at all it should be ok if the stop
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# script fails. I can't tell at this point because of the cleaned /run.
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set +e; invoke-rc.d mariadb stop; set -e
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# An existing /etc/init.d/mysql might be on the system if there was a
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# previous MySQL or MariaDB installation, since /etc/init.d files are
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# considered config files and stay around even after the package is removed.
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#
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# The install step of this package adds a new /etc/init.d/mariadb file. As
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# we also want to ensure that there are no old (and potentially outdated)
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# versions of /etc/init.d/mysql we simply replace it using a copy of the
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# latest 'mariadb' file. This has also the added benefit that anything that
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# invokes traditional sysv init with either 'mysql' or 'mariadb' will end up
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# controlling this newly installed MariaDB, and thus we maintain better
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# backwards compatibility.
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#
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# Note that the 'Provides' line is also updated to avoid 'insserv' exiting
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# on failure (when it is run by update-rc.d) because of duplicate service
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# names.
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if [ -f "/etc/init.d/mysql" ] && [ -f "/etc/init.d/mariadb" ]
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then
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# Copy init file and rename the service name and filename on the fly
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sed 's/Provides: mariadb/Provides: mysql/g' /etc/init.d/mariadb > /etc/init.d/mysql
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# NOTE: Number of spaces/tabs is important here!
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# Confirm if the sed worked
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if ! grep --quiet "Provides: mysql" /etc/init.d/mysql
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then
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# If not, then delete the file to avoid failures later on
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rm -f /etc/init.d/mysql
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echo "Warning! Failed creating a mysql named copy of mariadb init.d file"
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fi
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fi
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mysql_statedir=/usr/share/mysql
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mysql_datadir=/var/lib/mysql
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mysql_logdir=/var/log/mysql
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mysql_cfgdir=/etc/mysql
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mysql_upgradedir=/var/lib/mysql-upgrade
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# If the following symlink exists, it is a preserved copy the old data dir
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# created by the preinst script during a upgrade that would have otherwise
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# been replaced by an empty mysql dir. This should restore it.
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for dir in DATADIR LOGDIR; do
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if [ "$dir" = "DATADIR" ]; then
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targetdir=$mysql_datadir
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else
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targetdir=$mysql_logdir
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fi
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savelink="$mysql_upgradedir/$dir.link"
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if [ -L "$savelink" ]; then
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# If the targetdir was a symlink before we upgraded it is supposed
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# to be either still be present or not existing anymore now.
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if [ -L "$targetdir" ]; then
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rm "$savelink"
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elif [ ! -d "$targetdir" ]; then
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mv "$savelink" "$targetdir"
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else
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# this should never even happen, but just in case...
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mysql_tmp=$(mktemp -d -t mysql-symlink-restore-XXXXXX)
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echo "this is very strange! see $mysql_tmp/README..." >&2
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mv "$targetdir" "$mysql_tmp"
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cat << EOF > "$mysql_tmp/README"
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If you're reading this, it's most likely because you had replaced /var/lib/mysql
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with a symlink, then upgraded to a new version of mysql, and then dpkg
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removed your symlink (see #182747 and others). The mysql packages noticed
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that this happened, and as a workaround have restored it. However, because
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/var/lib/mysql seems to have been re-created in the meantime, and because
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we don't want to rm -rf something we don't know as much about, we are going
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to leave this unexpected directory here. If your database looks normal,
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and this is not a symlink to your database, you should be able to blow
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this all away.
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EOF
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fi
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fi
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rmdir $mysql_upgradedir 2>/dev/null || true
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done
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# Upgrading from mysql.com needs might have the root user as auth_socket.
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# auto.cnf is a sign of a mysql install, that doesn't exist in mariadb.
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# We use lsof to protect against concurrent access by mysqld (mariadb has
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# its own projection). We make sure we're not doing this on a MySQL-8.0
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# directory.
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# This direct update is needed to enable an authentication mechanism to
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# perform mariadb-upgrade, (MDEV-22678). To keep the impact minimal, we
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# skip innodb and set key-buffer-size to 0 as it isn't reused.
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if [ -f "$mysql_datadir"/auto.cnf ] && [ -f "$mysql_datadir"/mysql/user.MYD ] &&
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[ ! lsof -nt "$mysql_datadir"/mysql/user.MYD > /dev/null ] && [ ! -f "$mysql_datadir"/undo_001 ]; then
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echo "UPDATE mysql.user SET plugin='unix_socket' WHERE plugin='auth_socket';" |
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/usr/sbin/mariadbd --skip-innodb --key_buffer_size=0 --default-storage-engine=MyISAM --bootstrap 2> /dev/null
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fi
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# Ensure the existence and right permissions for the database and
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# log files. Use mkdir option 'Z' to create with correct SELinux context.
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if [ ! -d "$mysql_statedir" ] && [ ! -L "$mysql_statedir" ]; then mkdir -Z "$mysql_statedir"; fi
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if [ ! -d "$mysql_datadir" ] && [ ! -L "$mysql_datadir" ]; then mkdir -Z "$mysql_datadir" ; fi
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if [ ! -d "$mysql_logdir" ] && [ ! -L "$mysql_logdir" ]; then mkdir -Z "$mysql_logdir" ; fi
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# When creating an ext3 jounal on an already mounted filesystem like e.g.
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# /var/lib/mysql, you get a .journal file that is not modifiable by chown.
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# The mysql_statedir must not be writable by the mysql user under any
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# circumstances as it contains scripts that are executed by root.
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set +e
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chown -R 0:0 $mysql_statedir
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find $mysql_datadir ! -uid "$(id -u mysql)" -print0 | xargs -0 -r chown mysql
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chown -R mysql:adm $mysql_logdir
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chmod 2750 $mysql_logdir
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set -e
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## Set the correct filesystem ownership for the PAM v2 plugin
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# eg. /usr/lib/x86_64-linux-gnu/mysql/plugin/auth_pam_tool_dir/
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# NOTE! This is security sensitive, don't allow for a race condition.
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#
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# 1. Drop privileges of directory
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# -> At this point only root can see and execute auth_pam_tool
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chmod 0700 /usr/lib/mysql/plugin/auth_pam_tool_dir
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#
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# 2. Make binary setuid
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# -> At this point only root can run the setuid binary so no escalation here yet
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chmod 04755 /usr/lib/mysql/plugin/auth_pam_tool_dir/auth_pam_tool
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#
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# 3. Allow user 'mysql' to see and execute auth_pam_tool
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# -> Now user mysql owns the directory and can see and execute the binary inside
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# -> Since the binary is setuid, user mysql gets limited root powers here to
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# run the PAM authetications, which need root (e.g. to validate passwords
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# against /etc/shadow)
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chown mysql /usr/lib/mysql/plugin/auth_pam_tool_dir
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# This is important to avoid dataloss when there is a removed
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# mysql-server version from Woody lying around which used the same
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# data directory and then somewhen gets purged by the admin.
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db_set mariadb-server/postrm_remove_database false || true
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# Clean up old flags before setting new one
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rm -f $mysql_datadir/debian-*.flag
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# Flag data dir to avoid downgrades
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touch "$mysql_datadir/debian-$MAJOR_VER.flag"
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# initiate databases. Output is not allowed by debconf :-(
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# This will fail if we are upgrading an existing database; in this case
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# mysql_upgrade, called from the /etc/init.d/mariadb start script, will
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# handle things.
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# Debian: beware of the bashisms...
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# Debian: can safely run on upgrades with existing databases
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set +e
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bash /usr/bin/mysql_install_db --rpm --cross-bootstrap --user=mysql \
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--disable-log-bin --skip-test-db 2>&1 | \
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$ERR_LOGGER
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set -e
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# On new installations root user can connect via unix_socket.
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# But on upgrades, scripts rely on debian-sys-maint user and
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# credentials in /etc/mysql/debian.cnf
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# All tools use --defaults-file=/etc/mysql/debian.cnf
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# And while it's not needed for new installations, we keep using
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# --defaults-file option for tools (for the sake of upgrades)
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# and thus need /etc/mysql/debian.cnf to exist, even if it's empty.
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# In the long run the goal is to obsolete this file.
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dc=$mysql_cfgdir/debian.cnf;
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if [ ! -d "$mysql_cfgdir" ]; then
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install -o 0 -g 0 -m 0755 -d $mysql_cfgdir
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fi
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if [ ! -e "$dc" ]; then
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cat /dev/null > $dc
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echo "# THIS FILE IS OBSOLETE. STOP USING IT IF POSSIBLE." >>$dc
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echo "# This file exists only for backwards compatibility for" >>$dc
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echo "# tools that run '--defaults-file=/etc/mysql/debian.cnf'" >>$dc
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echo "# and have root level access to the local filesystem." >>$dc
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echo "# With those permissions one can run 'mariadb' directly" >>$dc
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echo "# anyway thanks to unix socket authentication and hence" >>$dc
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echo "# this file is useless. See package README for more info." >>$dc
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echo "[client]" >>$dc
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echo "host = localhost" >>$dc
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echo "user = root" >>$dc
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echo "[mysql_upgrade]" >>$dc
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echo "host = localhost" >>$dc
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echo "user = root" >>$dc
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echo "# THIS FILE WILL BE REMOVED IN A FUTURE DEBIAN RELEASE." >>$dc
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fi
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# Keep it only root-readable, as it always was
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chown 0:0 $dc
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chmod 0600 $dc
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# If there is a real AppArmor profile, we reload it.
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# If the default empty profile is installed, then we remove any old
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# profile that may be loaded.
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# This allows upgrade from old versions (that have an apparmor profile
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# on by default) to work both to disable a default profile, and to keep
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# any profile installed and maintained by users themselves.
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profile="/etc/apparmor.d/usr.sbin.mariadbd"
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if [ -f "$profile" ] && aa-status --enabled 2>/dev/null; then
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if grep -q /usr/sbin/mariadbd "$profile" 2>/dev/null ; then
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apparmor_parser -r "$profile" || true
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else
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echo "/usr/sbin/mariadbd { }" | apparmor_parser --remove 2>/dev/null || true
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fi
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fi
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# @TODO: Remove once buildbot.askmonty.org has been updated not to expect this file
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mkdir -p /etc/systemd/system/mariadb.service.d/
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# Note that file cannot be empty, otherwise systemd version in Ubuntu Bionic
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# will think the service is masked
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echo "# empty placeholder" > /etc/systemd/system/mariadb.service.d/migrated-from-my.cnf-settings.conf
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;;
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abort-upgrade|abort-remove|abort-configure)
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;;
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triggered)
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if [ -d /run/systemd/system ]; then
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systemctl --system daemon-reload
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else
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invoke-rc.d mariadb restart
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fi
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;;
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*)
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echo "postinst called with unknown argument '$1'" 1>&2
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exit 1
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;;
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esac
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db_stop # in case invoke fails
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# dh_systemd_start doesn't emit anything since we still ship /etc/init.d/mariadb.
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# Thus MariaDB server is started via init.d script, which in turn redirects to
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# systemctl. If we upgrade from MySQL mysql.service may be masked, which also
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# means init.d script is disabled. Unmask mysql service explicitly.
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# Check first that the command exists, to avoid emitting any warning messages.
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if [ -x "$(command -v deb-systemd-helper)" ]; then
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deb-systemd-helper unmask mysql.service > /dev/null
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fi
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#DEBHELPER#
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# Modified dh_systemd_start snippet that's not added automatically
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if [ -d /run/systemd/system ]; then
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systemctl --system daemon-reload >/dev/null || true
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deb-systemd-invoke start mariadb.service >/dev/null || true
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# Modified dh_installinit snippet to only run with sysvinit
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elif [ -x "/etc/init.d/mariadb" ]; then
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if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ]; then
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invoke-rc.d mariadb start || exit $?
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fi
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fi
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