tests/qtest/tpm: Clean up remainders of swtpm

After running "make check", there are remainders of the tpm
tests left in the /tmp directory, slowly filling it up.
Seems like "swtpm" leaves a ".lock" and a "tpm2-00.permall"
file behind, so that the g_rmdir() calls on the temporary
directories fail. Introduce a helper function to remove those
leftovers before doing the g_rmdir().

Message-Id: <20221012084334.794253-1-thuth@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

5 files changed, 26 insertions, 9 deletions

diff --git a/tests/qtest/tpm-crb-swtpm-test.c b/tests/qtest/tpm-crb-swtpm-test.c
index 55fdb56..40254f7 100644
--- a/tests/qtest/tpm-crb-swtpm-test.c
+++ b/tests/qtest/tpm-crb-swtpm-test.c
@@ -13,7 +13,6 @@
  */
 
 #include "qemu/osdep.h"
-#include <glib/gstdio.h>
 
 #include "libqtest.h"
 #include "qemu/module.h"
@@ -62,9 +61,9 @@ int main(int argc, char **argv)
                         tpm_crb_swtpm_migration_test);
     ret = g_test_run();
 
-    g_rmdir(ts.dst_tpm_path);
+    tpm_util_rmdir(ts.dst_tpm_path);
     g_free(ts.dst_tpm_path);
-    g_rmdir(ts.src_tpm_path);
+    tpm_util_rmdir(ts.src_tpm_path);
     g_free(ts.src_tpm_path);
     g_free(ts.uri);
 
diff --git a/tests/qtest/tpm-tis-device-swtpm-test.c b/tests/qtest/tpm-tis-device-swtpm-test.c
index 7b20035..8c067fd 100644
--- a/tests/qtest/tpm-tis-device-swtpm-test.c
+++ b/tests/qtest/tpm-tis-device-swtpm-test.c
@@ -14,7 +14,6 @@
  */
 
 #include "qemu/osdep.h"
-#include <glib/gstdio.h>
 
 #include "libqtest.h"
 #include "qemu/module.h"
@@ -66,9 +65,9 @@ int main(int argc, char **argv)
                         tpm_tis_swtpm_migration_test);
     ret = g_test_run();
 
-    g_rmdir(ts.dst_tpm_path);
+    tpm_util_rmdir(ts.dst_tpm_path);
     g_free(ts.dst_tpm_path);
-    g_rmdir(ts.src_tpm_path);
+    tpm_util_rmdir(ts.src_tpm_path);
     g_free(ts.src_tpm_path);
     g_free(ts.uri);
 
diff --git a/tests/qtest/tpm-tis-swtpm-test.c b/tests/qtest/tpm-tis-swtpm-test.c
index 90131cb..11539c0 100644
--- a/tests/qtest/tpm-tis-swtpm-test.c
+++ b/tests/qtest/tpm-tis-swtpm-test.c
@@ -13,7 +13,6 @@
  */
 
 #include "qemu/osdep.h"
-#include <glib/gstdio.h>
 
 #include "libqtest.h"
 #include "qemu/module.h"
@@ -61,9 +60,9 @@ int main(int argc, char **argv)
                         tpm_tis_swtpm_migration_test);
     ret = g_test_run();
 
-    g_rmdir(ts.dst_tpm_path);
+    tpm_util_rmdir(ts.dst_tpm_path);
     g_free(ts.dst_tpm_path);
-    g_rmdir(ts.src_tpm_path);
+    tpm_util_rmdir(ts.src_tpm_path);
     g_free(ts.src_tpm_path);
     g_free(ts.uri);
 
diff --git a/tests/qtest/tpm-util.c b/tests/qtest/tpm-util.c
index e0dc5da..a7efe2d 100644
--- a/tests/qtest/tpm-util.c
+++ b/tests/qtest/tpm-util.c
@@ -13,6 +13,7 @@
  */
 
 #include "qemu/osdep.h"
+#include <glib/gstdio.h>
 
 #include "hw/acpi/tpm.h"
 #include "libqtest.h"
@@ -292,3 +293,21 @@ void tpm_util_migration_start_qemu(QTestState **src_qemu,
     g_free(src_qemu_args);
     g_free(dst_qemu_args);
 }
+
+/* Remove directory with remainders of swtpm */
+void tpm_util_rmdir(const char *path)
+{
+    char *filename;
+    int ret;
+
+    filename = g_strdup_printf("%s/tpm2-00.permall", path);
+    g_unlink(filename);
+    g_free(filename);
+
+    filename = g_strdup_printf("%s/.lock", path);
+    g_unlink(filename);
+    g_free(filename);
+
+    ret = g_rmdir(path);
+    g_assert(!ret);
+}
diff --git a/tests/qtest/tpm-util.h b/tests/qtest/tpm-util.h
index 3b97d69..80720af 100644
--- a/tests/qtest/tpm-util.h
+++ b/tests/qtest/tpm-util.h
@@ -53,5 +53,6 @@ void tpm_util_migration_start_qemu(QTestState **src_qemu,
                                    const char *machine_options);
 
 void tpm_util_wait_for_migration_complete(QTestState *who);
+void tpm_util_rmdir(const char *path);
 
 #endif /* TESTS_TPM_UTIL_H */