We add testing for "int tracefs_instance_file_append()" and
"int tracefs_instance_file_clear()".
The test case performs registration and deregistration of kprobes.
Signed-off-by: Yordan Karadzhov (VMware) <y.karadz@xxxxxxxxx>
---
utest/tracefs-utest.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/utest/tracefs-utest.c b/utest/tracefs-utest.c
index d675c16..edb3a3d 100644
--- a/utest/tracefs-utest.c
+++ b/utest/tracefs-utest.c
@@ -28,6 +28,11 @@
#define TRACE_ON "tracing_on"
#define TRACE_CLOCK "trace_clock"
+#define KPROB_EVTS "kprobe_events"
+#define KPROBE_1 "p:mkdir do_mkdirat path=+u0($arg2):ustring"
+#define KPROBE_1_RM "-:mkdir"
+#define KPROBE_2 "p:open do_sys_openat2 file=+u0($arg2):ustring flags=+0($arg3):x64"
+
static struct tracefs_instance *test_instance;
static struct tep_handle *test_tep;
struct test_sample {
@@ -375,6 +380,7 @@ static void test_instance_file(void)
char *inst_file;
char *inst_dir;
struct stat st;
+ char *kprobes;
char *fname;
char *file1;
char *file2;
@@ -443,6 +449,32 @@ static void test_instance_file(void)
free(file1);
free(file2);
+ ret = tracefs_instance_file_write(NULL, KPROB_EVTS, KPROBE_1);
+ CU_TEST(ret == strlen(KPROBE_1));
+ kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
+ CU_TEST(kprobes != NULL);
+ CU_TEST(strstr(kprobes, KPROBE_1 + 2) != NULL);
+ free(kprobes);
+
+ ret = tracefs_instance_file_append(NULL, KPROB_EVTS, KPROBE_2);
+ CU_TEST(ret == strlen(KPROBE_2));
+ kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
+ CU_TEST(kprobes != NULL);
+ CU_TEST(strstr(kprobes, KPROBE_2 + 2) != NULL);
+ free(kprobes);
+
+ ret = tracefs_instance_file_append(NULL, KPROB_EVTS, KPROBE_1_RM);
+ CU_TEST(ret == strlen(KPROBE_1_RM));
+ kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
+ CU_TEST(kprobes != NULL);
+ CU_TEST(strstr(kprobes, KPROBE_1 + 2) == NULL);
+ free(kprobes);
+
+ ret = tracefs_instance_file_clear(NULL, KPROB_EVTS);
+ CU_TEST(ret == 0);
+ kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
+ CU_TEST(kprobes == NULL);
+
tracefs_put_tracing_file(inst_file);
free(fname);
--
2.25.1
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