Check datadir more carefully to avoid unwanted data corruption

Related: #1335849
This commit is contained in:
Honza Horak 2016-07-14 00:10:50 +02:00
parent 69ae9856e2
commit a8ba852168

View File

@ -5,6 +5,26 @@
source "`dirname ${BASH_SOURCE[0]}`/mysql-scripts-common"
# Returns content of the specified directory
# If listing files fails, fake-file is returned so which means
# we'll behave like there was some data initialized
# @param <dir> datadir
ls_check_datadir ()
{
ls -A "$1" 2>/dev/null
test $? -eq 0 || echo "fake-file"
}
# Checks whether datadir should be initialized
# @param <dir> datadir
can_initialize ()
{
case `ls_check_datadir "$1"` in
""|lost+found) true ;;
*) false ;;
esac
}
# If two args given first is user, second is group
# otherwise the arg is the systemd service file
if [ "$#" -eq 2 ]
@ -56,7 +76,7 @@ chmod 0640 "$errlogfile"
[ -x /sbin/restorecon ] && /sbin/restorecon "$errlogfile"
# Make the data directory if doesn't exist or empty
if ! ls $datadir/* &>/dev/null; then
if can_initialize "$datadir" ; then
# First, make sure $datadir is there with correct permissions
# (note: if it's not, and we're not root, this'll fail ...)
if [ ! -e "$datadir" -a ! -h "$datadir" ]
@ -69,14 +89,30 @@ if ! ls $datadir/* &>/dev/null; then
# Now create the database
echo "Initializing @NICE_PROJECT_NAME@ database"
CURRENT_TIME=`LANG=C date -u`
@bindir@/mysql_install_db --rpm --datadir="$datadir" --user="$myuser"
ret=$?
if [ $ret -ne 0 ] ; then
echo "Initialization of @NICE_PROJECT_NAME@ database failed." >&2
echo "Perhaps @sysconfdir@/my.cnf is misconfigured." >&2
echo "Perhaps @sysconfdir@/my.cnf is misconfigured or there is some problem with permissions of $datadir." >&2
# Clean up any partially-created database files
if [ ! -e "$datadir/mysql/user.frm" ] ; then
rm -rf "$datadir"/*
if [ ! -e "$datadir/mysql/user.frm" ] && [ -d "$datadir" ] ; then
echo "Initialization of @NICE_PROJECT_NAME@ database was not finished successfully." >&2
echo "Files created so far will be removed." >&2
# Avoiding deletion of files not created by mysql_install_db is
# guarded by time check and sleep should help work-arounded
# potential issues on systems with 1 second resolution timestamps
# https://bugzilla.redhat.com/show_bug.cgi?id=1335849#c19
sleep 1
find "$datadir" -mindepth 1 -maxdepth 1 -newermt "$CURRENT_TIME" \
-not -name "lost+found" -exec rm -rf {} +
if [ $? -ne 0 ] ; then
echo "Removing of created files was not successfull." >&2
echo "Please, clean directory $datadir manually." >&2
fi
else
echo "However, part of data has been initialized and those will not be removed." >&2
echo "Please, clean directory $datadir manually." >&2
fi
exit $ret
fi
@ -84,6 +120,18 @@ if ! ls $datadir/* &>/dev/null; then
echo "@VERSION@-MariaDB" >"$datadir/mysql_upgrade_info"
# In case we're running as root, make sure files are owned properly
chown -R "$myuser:$mygroup" "$datadir"
else
if [ -d "$datadir/mysql/" ] ; then
# mysql dir exists, it seems data are initialized properly
echo "Database MariaDB is probably initialized in $datadir already, nothing is done."
echo "If this is not the case, make sure the $datadir is empty before running `basename $0`."
else
# if the directory is not empty but mysql/ directory is missing, then
# print error and let user to initialize manually or empty the directory
echo "Database MariaDB is not initialized, but the directory $datadir is not empty, so initialization cannot be done."
echo "Make sure the $datadir is empty before running `basename $0`."
exit 1
fi
fi
exit 0