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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /tools/testing/selftests/user_events/dyn_test.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/user_events/dyn_test.c')
-rw-r--r--tools/testing/selftests/user_events/dyn_test.c130
1 files changed, 130 insertions, 0 deletions
diff --git a/tools/testing/selftests/user_events/dyn_test.c b/tools/testing/selftests/user_events/dyn_test.c
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+++ b/tools/testing/selftests/user_events/dyn_test.c
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+// SPDX-License-Identifier: GPL-2.0
+/*
+ * User Events Dyn Events Test Program
+ *
+ * Copyright (c) 2021 Beau Belgrave <beaub@linux.microsoft.com>
+ */
+
+#include <errno.h>
+#include <linux/user_events.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "../kselftest_harness.h"
+
+const char *dyn_file = "/sys/kernel/debug/tracing/dynamic_events";
+const char *clear = "!u:__test_event";
+
+static int Append(const char *value)
+{
+ int fd = open(dyn_file, O_RDWR | O_APPEND);
+ int ret = write(fd, value, strlen(value));
+
+ close(fd);
+ return ret;
+}
+
+#define CLEAR() \
+do { \
+ int ret = Append(clear); \
+ if (ret == -1) \
+ ASSERT_EQ(ENOENT, errno); \
+} while (0)
+
+#define TEST_PARSE(x) \
+do { \
+ ASSERT_NE(-1, Append(x)); \
+ CLEAR(); \
+} while (0)
+
+#define TEST_NPARSE(x) ASSERT_EQ(-1, Append(x))
+
+FIXTURE(user) {
+};
+
+FIXTURE_SETUP(user) {
+ CLEAR();
+}
+
+FIXTURE_TEARDOWN(user) {
+ CLEAR();
+}
+
+TEST_F(user, basic_types) {
+ /* All should work */
+ TEST_PARSE("u:__test_event u64 a");
+ TEST_PARSE("u:__test_event u32 a");
+ TEST_PARSE("u:__test_event u16 a");
+ TEST_PARSE("u:__test_event u8 a");
+ TEST_PARSE("u:__test_event char a");
+ TEST_PARSE("u:__test_event unsigned char a");
+ TEST_PARSE("u:__test_event int a");
+ TEST_PARSE("u:__test_event unsigned int a");
+ TEST_PARSE("u:__test_event short a");
+ TEST_PARSE("u:__test_event unsigned short a");
+ TEST_PARSE("u:__test_event char[20] a");
+ TEST_PARSE("u:__test_event unsigned char[20] a");
+ TEST_PARSE("u:__test_event char[0x14] a");
+ TEST_PARSE("u:__test_event unsigned char[0x14] a");
+ /* Bad size format should fail */
+ TEST_NPARSE("u:__test_event char[aa] a");
+ /* Large size should fail */
+ TEST_NPARSE("u:__test_event char[9999] a");
+ /* Long size string should fail */
+ TEST_NPARSE("u:__test_event char[0x0000000000001] a");
+}
+
+TEST_F(user, loc_types) {
+ /* All should work */
+ TEST_PARSE("u:__test_event __data_loc char[] a");
+ TEST_PARSE("u:__test_event __data_loc unsigned char[] a");
+ TEST_PARSE("u:__test_event __rel_loc char[] a");
+ TEST_PARSE("u:__test_event __rel_loc unsigned char[] a");
+}
+
+TEST_F(user, size_types) {
+ /* Should work */
+ TEST_PARSE("u:__test_event struct custom a 20");
+ /* Size not specified on struct should fail */
+ TEST_NPARSE("u:__test_event struct custom a");
+ /* Size specified on non-struct should fail */
+ TEST_NPARSE("u:__test_event char a 20");
+}
+
+TEST_F(user, flags) {
+ /* Should work */
+ TEST_PARSE("u:__test_event:BPF_ITER u32 a");
+ /* Forward compat */
+ TEST_PARSE("u:__test_event:BPF_ITER,FLAG_FUTURE u32 a");
+}
+
+TEST_F(user, matching) {
+ /* Register */
+ ASSERT_NE(-1, Append("u:__test_event struct custom a 20"));
+ /* Should not match */
+ TEST_NPARSE("!u:__test_event struct custom b");
+ /* Should match */
+ TEST_PARSE("!u:__test_event struct custom a");
+ /* Multi field reg */
+ ASSERT_NE(-1, Append("u:__test_event u32 a; u32 b"));
+ /* Non matching cases */
+ TEST_NPARSE("!u:__test_event u32 a");
+ TEST_NPARSE("!u:__test_event u32 b");
+ TEST_NPARSE("!u:__test_event u32 a; u32 ");
+ TEST_NPARSE("!u:__test_event u32 a; u32 a");
+ /* Matching case */
+ TEST_PARSE("!u:__test_event u32 a; u32 b");
+ /* Register */
+ ASSERT_NE(-1, Append("u:__test_event u32 a; u32 b"));
+ /* Ensure trailing semi-colon case */
+ TEST_PARSE("!u:__test_event u32 a; u32 b;");
+}
+
+int main(int argc, char **argv)
+{
+ return test_harness_run(argc, argv);
+}