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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/vDSO/vdso_test_abi.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/vDSO/vdso_test_abi.c')
-rw-r--r--tools/testing/selftests/vDSO/vdso_test_abi.c233
1 files changed, 233 insertions, 0 deletions
diff --git a/tools/testing/selftests/vDSO/vdso_test_abi.c b/tools/testing/selftests/vDSO/vdso_test_abi.c
new file mode 100644
index 000000000..883ca8542
--- /dev/null
+++ b/tools/testing/selftests/vDSO/vdso_test_abi.c
@@ -0,0 +1,233 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * vdso_full_test.c: Sample code to test all the timers.
+ * Copyright (c) 2019 Arm Ltd.
+ *
+ * Compile with:
+ * gcc -std=gnu99 vdso_full_test.c parse_vdso.c
+ *
+ */
+
+#include <stdint.h>
+#include <elf.h>
+#include <stdio.h>
+#include <time.h>
+#include <sys/auxv.h>
+#include <sys/time.h>
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <sys/syscall.h>
+
+#include "../kselftest.h"
+#include "vdso_config.h"
+
+extern void *vdso_sym(const char *version, const char *name);
+extern void vdso_init_from_sysinfo_ehdr(uintptr_t base);
+extern void vdso_init_from_auxv(void *auxv);
+
+static const char *version;
+static const char **name;
+
+typedef long (*vdso_gettimeofday_t)(struct timeval *tv, struct timezone *tz);
+typedef long (*vdso_clock_gettime_t)(clockid_t clk_id, struct timespec *ts);
+typedef long (*vdso_clock_getres_t)(clockid_t clk_id, struct timespec *ts);
+typedef time_t (*vdso_time_t)(time_t *t);
+
+#define VDSO_TEST_PASS_MSG() "\n%s(): PASS\n", __func__
+#define VDSO_TEST_FAIL_MSG(x) "\n%s(): %s FAIL\n", __func__, x
+#define VDSO_TEST_SKIP_MSG(x) "\n%s(): SKIP: Could not find %s\n", __func__, x
+
+static void vdso_test_gettimeofday(void)
+{
+ /* Find gettimeofday. */
+ vdso_gettimeofday_t vdso_gettimeofday =
+ (vdso_gettimeofday_t)vdso_sym(version, name[0]);
+
+ if (!vdso_gettimeofday) {
+ ksft_test_result_skip(VDSO_TEST_SKIP_MSG(name[0]));
+ return;
+ }
+
+ struct timeval tv;
+ long ret = vdso_gettimeofday(&tv, 0);
+
+ if (ret == 0) {
+ ksft_print_msg("The time is %lld.%06lld\n",
+ (long long)tv.tv_sec, (long long)tv.tv_usec);
+ ksft_test_result_pass(VDSO_TEST_PASS_MSG());
+ } else {
+ ksft_test_result_fail(VDSO_TEST_FAIL_MSG(name[0]));
+ }
+}
+
+static void vdso_test_clock_gettime(clockid_t clk_id)
+{
+ /* Find clock_gettime. */
+ vdso_clock_gettime_t vdso_clock_gettime =
+ (vdso_clock_gettime_t)vdso_sym(version, name[1]);
+
+ if (!vdso_clock_gettime) {
+ ksft_test_result_skip(VDSO_TEST_SKIP_MSG(name[1]));
+ return;
+ }
+
+ struct timespec ts;
+ long ret = vdso_clock_gettime(clk_id, &ts);
+
+ if (ret == 0) {
+ ksft_print_msg("The time is %lld.%06lld\n",
+ (long long)ts.tv_sec, (long long)ts.tv_nsec);
+ ksft_test_result_pass(VDSO_TEST_PASS_MSG());
+ } else {
+ ksft_test_result_fail(VDSO_TEST_FAIL_MSG(name[1]));
+ }
+}
+
+static void vdso_test_time(void)
+{
+ /* Find time. */
+ vdso_time_t vdso_time =
+ (vdso_time_t)vdso_sym(version, name[2]);
+
+ if (!vdso_time) {
+ ksft_test_result_skip(VDSO_TEST_SKIP_MSG(name[2]));
+ return;
+ }
+
+ long ret = vdso_time(NULL);
+
+ if (ret > 0) {
+ ksft_print_msg("The time in hours since January 1, 1970 is %lld\n",
+ (long long)(ret / 3600));
+ ksft_test_result_pass(VDSO_TEST_PASS_MSG());
+ } else {
+ ksft_test_result_fail(VDSO_TEST_FAIL_MSG(name[2]));
+ }
+}
+
+static void vdso_test_clock_getres(clockid_t clk_id)
+{
+ int clock_getres_fail = 0;
+
+ /* Find clock_getres. */
+ vdso_clock_getres_t vdso_clock_getres =
+ (vdso_clock_getres_t)vdso_sym(version, name[3]);
+
+ if (!vdso_clock_getres) {
+ ksft_test_result_skip(VDSO_TEST_SKIP_MSG(name[3]));
+ return;
+ }
+
+ struct timespec ts, sys_ts;
+ long ret = vdso_clock_getres(clk_id, &ts);
+
+ if (ret == 0) {
+ ksft_print_msg("The vdso resolution is %lld %lld\n",
+ (long long)ts.tv_sec, (long long)ts.tv_nsec);
+ } else {
+ clock_getres_fail++;
+ }
+
+ ret = syscall(SYS_clock_getres, clk_id, &sys_ts);
+
+ ksft_print_msg("The syscall resolution is %lld %lld\n",
+ (long long)sys_ts.tv_sec, (long long)sys_ts.tv_nsec);
+
+ if ((sys_ts.tv_sec != ts.tv_sec) || (sys_ts.tv_nsec != ts.tv_nsec))
+ clock_getres_fail++;
+
+ if (clock_getres_fail > 0) {
+ ksft_test_result_fail(VDSO_TEST_FAIL_MSG(name[3]));
+ } else {
+ ksft_test_result_pass(VDSO_TEST_PASS_MSG());
+ }
+}
+
+const char *vdso_clock_name[12] = {
+ "CLOCK_REALTIME",
+ "CLOCK_MONOTONIC",
+ "CLOCK_PROCESS_CPUTIME_ID",
+ "CLOCK_THREAD_CPUTIME_ID",
+ "CLOCK_MONOTONIC_RAW",
+ "CLOCK_REALTIME_COARSE",
+ "CLOCK_MONOTONIC_COARSE",
+ "CLOCK_BOOTTIME",
+ "CLOCK_REALTIME_ALARM",
+ "CLOCK_BOOTTIME_ALARM",
+ "CLOCK_SGI_CYCLE",
+ "CLOCK_TAI",
+};
+
+/*
+ * This function calls vdso_test_clock_gettime and vdso_test_clock_getres
+ * with different values for clock_id.
+ */
+static inline void vdso_test_clock(clockid_t clock_id)
+{
+ ksft_print_msg("\nclock_id: %s\n", vdso_clock_name[clock_id]);
+
+ vdso_test_clock_gettime(clock_id);
+
+ vdso_test_clock_getres(clock_id);
+}
+
+#define VDSO_TEST_PLAN 16
+
+int main(int argc, char **argv)
+{
+ unsigned long sysinfo_ehdr = getauxval(AT_SYSINFO_EHDR);
+
+ ksft_print_header();
+ ksft_set_plan(VDSO_TEST_PLAN);
+
+ if (!sysinfo_ehdr) {
+ printf("AT_SYSINFO_EHDR is not present!\n");
+ return KSFT_SKIP;
+ }
+
+ version = versions[VDSO_VERSION];
+ name = (const char **)&names[VDSO_NAMES];
+
+ printf("[vDSO kselftest] VDSO_VERSION: %s\n", version);
+
+ vdso_init_from_sysinfo_ehdr(getauxval(AT_SYSINFO_EHDR));
+
+ vdso_test_gettimeofday();
+
+#if _POSIX_TIMERS > 0
+
+#ifdef CLOCK_REALTIME
+ vdso_test_clock(CLOCK_REALTIME);
+#endif
+
+#ifdef CLOCK_BOOTTIME
+ vdso_test_clock(CLOCK_BOOTTIME);
+#endif
+
+#ifdef CLOCK_TAI
+ vdso_test_clock(CLOCK_TAI);
+#endif
+
+#ifdef CLOCK_REALTIME_COARSE
+ vdso_test_clock(CLOCK_REALTIME_COARSE);
+#endif
+
+#ifdef CLOCK_MONOTONIC
+ vdso_test_clock(CLOCK_MONOTONIC);
+#endif
+
+#ifdef CLOCK_MONOTONIC_RAW
+ vdso_test_clock(CLOCK_MONOTONIC_RAW);
+#endif
+
+#ifdef CLOCK_MONOTONIC_COARSE
+ vdso_test_clock(CLOCK_MONOTONIC_COARSE);
+#endif
+
+#endif
+
+ vdso_test_time();
+
+ ksft_print_cnts();
+ return ksft_get_fail_cnt() == 0 ? KSFT_PASS : KSFT_FAIL;
+}