genfio: fix temporary file handling

As a side effect, the template temp file is no longer left behind, as
a unique filename is used for it on each run.

Use the same method of figuring out the temp dir as in
check_status_file().

Signed-off-by: Ville Skyttä <ville.skytta@upcloud.com>

diff --git a/tools/genfio b/tools/genfio
index 8518bbccf33a3111f097eb8221f14dbdb0f5b01b..fc7e6e46771f7dc683aaceab3bfbaae943682889 100755 (executable)
--- a/tools/genfio
+++ b/tools/genfio
@@ -22,7 +22,8 @@
 BLK_SIZE=
 BLOCK_SIZE=4k
 SEQ=-1
-TEMPLATE=/tmp/template.fio
+TEMPLATE=$(mktemp "${TMPDIR:-${TEMP:-/tmp}}/template.fio.XXXXXX") || exit $?
+trap 'rm -f "$TEMPLATE"' EXIT
 OUTFILE=
 DISKS=
 PRINTABLE_DISKS=