From: Darrick J. Wong <djwong@xxxxxxxxxx> If we're running in a private mount namespace, /tmp is a private tmpfs mount. Using TEST_DIR/SCRATCH_MNT that point there is a bad idea because anyone can write to there. Let's just stop that. Signed-off-by: "Darrick J. Wong" <djwong@xxxxxxxxxx> --- check | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/check b/check index 33eb3e0859e578..09134ee63e41e2 100755 --- a/check +++ b/check @@ -815,6 +815,20 @@ function run_section() echo "SECTION -- $section" fi + # If we're running in a private mount namespace, /tmp is a private + # directory. We /could/ just mkdir it, but we'd rather have people + # set those paths elsewhere. + if [ "$HAVE_PRIVATENS" = yes ] && [[ $TEST_DIR =~ ^\/tmp ]]; then + echo "$TEST_DIR: TEST_DIR must not be in /tmp" + status=1 + exit + fi + if [ "$HAVE_PRIVATENS" = yes ] && [[ $SCRATCH_MNT =~ ^\/tmp ]]; then + echo "$SCRATCH_MNT: SCRATCH_MNT must not be in /tmp" + status=1 + exit + fi + sect_start=`_wallclock` if $RECREATE_TEST_DEV || [ "$OLD_FSTYP" != "$FSTYP" ]; then echo "RECREATING -- $FSTYP on $TEST_DEV"
