xref: /freebsd-10.1-release/etc/rc.d/cleartmp

#!/bin/sh
#
# $FreeBSD$
#

# PROVIDE: cleartmp
# REQUIRE: mountcritremote tmp
# BEFORE: DAEMON

. /etc/rc.subr

name="cleartmp"
# Disguise rcvar for the start method to run irrespective of its setting.
rcvar1="clear_tmp_enable"
start_cmd="${name}_start"
stop_cmd=":"

cleartmp_start()
{
	# Make /tmp location variable for easier debugging.
	local tmp="/tmp"

	# X related directories to create in /tmp.
	local x11_socket_dirs="${tmp}/.X11-unix ${tmp}/.XIM-unix \
			       ${tmp}/.ICE-unix ${tmp}/.font-unix"

	if checkyesno ${rcvar1}; then
		check_startmsgs && echo "Clearing ${tmp}."

		# This is not needed for mfs, but doesn't hurt anything.
		# Things to note:
		# + The dot in ${tmp}/. is important.
		# + Put -prune before -exec so find never descends
		#   into a directory that was already passed to rm -rf.
		# + "--" in rm arguments isn't strictly necessary, but
		#   it can prevent foot-shooting in future.
		# + /tmp/lost+found is preserved, but its contents are removed.
		# + lost+found and quota.* in subdirectories are removed.
		# + .sujournal and .snap are preserved.
		find -x ${tmp}/. ! -name . \
		    ! \( -name .sujournal -type f -user root \) \
		    ! \( -name .snap -type d -user root \) \
		    ! \( -name lost+found -type d -user root \) \
		    ! \( \( -name quota.user -or -name quota.group \) \
			-type f -user root \) \
		    -prune -exec rm -rf -- {} +
	elif checkyesno clear_tmp_X; then
		# Remove X lock files, since they will prevent you from
		# restarting X.  Remove other X related directories.
		check_startmsgs && echo "Clearing ${tmp} (X related)."
		rm -rf ${tmp}/.X[0-9]-lock ${x11_socket_dirs}
	fi
	if checkyesno clear_tmp_X; then
		# Create X related directories with proper permissions.
		mkdir -m 1777 ${x11_socket_dirs}
	fi
}

load_rc_config $name
run_rc_command "$1"