add compile+execute test which exercises mmap

diff --git a/t-mmap.sh b/t-mmap.sh
old mode 100755 (executable)
new mode 100644 (file)
index 9868bf0..24eca5a
--- a/t-mmap.sh
+++ b/t-mmap.sh
@@ -42,6 +42,20 @@ d $LOWER_DIR3
 FILES
 }
 
+function afterfiles_exec {
+cat <<FILES
+d $TOP_LOWER_DIR
+d $LOWER_DIR0
+f $LOWER_DIR0/a
+f $LOWER_DIR0/a.out
+f $LOWER_DIR0/foo.c
+d $LOWER_DIR1
+f $LOWER_DIR1/b
+d $LOWER_DIR2
+d $LOWER_DIR3
+FILES
+}
+
 # read-only mmap test
 function test_ro {
     init_odf
@@ -72,11 +86,28 @@ function test_rw {
     discard_odf
 }
 
+# read-write compile+execute test
+function test_exec {
+    ( files ) | create_hierarchy
+    dd if=/dev/zero of=$LOWER_DIR0/a bs=4096 count=4 2>/dev/null
+    dd if=/dev/zero of=$LOWER_DIR1/b bs=4096 count=4 2>/dev/null
+    mount_union "" $LOWER_DIR0 $LOWER_DIR1=ro
+    echo 'int main() { exit(0); }' > $MOUNTPOINT/foo.c
+    cc -o $MOUNTPOINT/a.out $MOUNTPOINT/foo.c 2> /dev/null || exit $?
+    $MOUNTPOINT/a.out || exit $?
+    echo -n "[exec] "
+    unmount_union
+    ( afterfiles_exec ) | check_hierarchy $TOP_LOWER_DIR
+}
+
 test_ro
 # skip on file systems which do not allow writeable mappings
 case "$FS0" in
     jffs2 | ramfs ) ;;
-    * ) test_rw ;;
+    * )
+       test_rw
+       test_exec
+       ;;
 esac
 
 complete_test