164 lines
3.5 KiB
Bash
164 lines
3.5 KiB
Bash
#!/bin/sh /etc/rc.common
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# Copyright (C) 2010-2018 OpenWrt.org
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# shellcheck disable=SC2034
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START=95
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# shellcheck disable=SC2034
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STOP=10
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NAME=mysqld
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LOGGER="/usr/bin/logger -p user.err -s -t $NAME --"
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[ -x "$LOGGER" ] || LOGGER="echo"
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MYSQLD="/usr/bin/$NAME"
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MYSQLDSAFE="/usr/bin/mysqld_safe"
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pidfile=""
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# mysqladmin likes to read /root/.my.cnf which could cause issues.
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export HOME="/etc/mysql"
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# Safeguard (relative paths, core dumps...)
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cd /
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mysqld_get_param() {
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"$MYSQLD" --help --verbose | sed -n 's|^'"$1"'[[:blank:]]\+||p'
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}
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# Send kill signal to MariaDB process
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#
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# Usage: boolean mysqld_kill signal
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mysql_kill() {
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[ -n "$pidfile" ] || pidfile="$(mysqld_get_param pid-file)"
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[ -f "$pidfile" ] || return 1
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pid="$(cat $pidfile)"
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[ -n "$pid" ] || return 2
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kill "$1" "$pid"
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}
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# Checks if a server is running and accessible.
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#
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# Supported modes are 'check_alive' and 'check_dead'.
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# Both check for pidfile and whether the specified process is running and is
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# indeed mysqld. We could use mysqladmin for the check, but to be able to do
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# so, mysqladmin requires access to the database, which sounds like overkill
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# and potential security issue.
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#
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# Usage: boolean mysqld_status [check_alive|check_dead]
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mysqld_status() {
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ps_alive=0
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pidfile="$(mysqld_get_param pid-file)"
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if [ -f "$pidfile" ] && mysql_kill -0 2> /dev/null && \
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[ "$(readlink "/proc/$(cat "$pidfile")/exe")" = "$MYSQLD" ]; then
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ps_alive=1
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fi
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if { [ "$1" = check_alive ] && [ $ps_alive = 1 ]; } || \
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{ [ "$1" = check_dead ] && [ $ps_alive = 0 ]; }
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then
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return 0 # EXIT_SUCCESS
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else
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return 1 # EXIT_FAILURE
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fi
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}
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start() {
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conf=/etc/mysql/my.cnf
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logdir=/var/log/mysql
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rundir=/var/run/mysqld
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hint="please fix your server configuration in /etc/mysql/"
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for i in "$MYSQLD" "$MYSQLDSAFE"; do
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if [ ! -x "$i" ]; then
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$LOGGER "$i is missing"
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exit 1
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fi
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done
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if [ ! -r "$conf" ]; then
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$LOGGER "$conf cannot be read"
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exit 1
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fi
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config_load "$NAME"
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config_get_bool enabled general enabled 0
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# shellcheck disable=SC2154
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if [ "$enabled" -eq 0 ]; then
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$LOGGER "service not enabled in /etc/config/$NAME"
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exit 1
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fi
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config_get options general options
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datadir="$(mysqld_get_param datadir)"
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tmpdir="$(mysqld_get_param tmpdir)"
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if [ -z "$datadir" ]; then
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$LOGGER "datadir is not set"
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$LOGGER "$hint"
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exit 1
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fi
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if [ -z "$tmpdir" ]; then
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$LOGGER "tmpdir is not set"
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$LOGGER "$hint"
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exit 1
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fi
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if [ ! -f "$datadir/mysql/tables_priv.MAD" ]; then
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args="--force"
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basedir="$(mysqld_get_param basedir)"
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[ -n "$basedir" ] && args="$args --basedir=$basedir"
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$LOGGER "Cannot detect privileges table. You might need to run"
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$LOGGER "'mysql_install_db \"$args\"'"
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$LOGGER "to initialize the system tables."
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exit 1
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fi
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# Start daemon
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if mysqld_status check_alive; then
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$LOGGER "server is already running"
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else
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for i in "$logdir" "$rundir"; do
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opts="-m 0750"
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if ! [ -e "$i" ]; then
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# $rundir needs to be accessible for
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# clients
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if [ "$i" = "$rundir" ]; then
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opts=
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fi
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# shellcheck disable=SC2086
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mkdir -p $opts "$i"
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[ -d "$i" ] && chown mariadb:mariadb "$i"
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fi
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done
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# shellcheck disable=SC2154,SC2086
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"$MYSQLDSAFE" $options >/dev/null 2>&1 &
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fi
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}
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stop() {
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timeout="0"
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while mysqld_status check_alive && [ "$timeout" -lt 60 ]; do
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mysql_kill -TERM
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sleep 1
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timeout="$(($timeout + 1))"
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done
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if ! mysqld_status check_dead; then
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$LOGGER "server is failing to stop"
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mysql_kill -KILL
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fi
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}
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reload() {
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if mysqld_status check_alive; then
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mysql_kill -HUP
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else
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$LOGGER "server is not running"
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fi
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}
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