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// SPDX-License-Identifier: GPL-2.0
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <errno.h>
#include <signal.h>
#include <stdint.h>
#include <unistd.h>
#include "rseq.h"
#include "../kselftest_harness.h"
FIXTURE(legacy)
{
};
static int cpu_id_in_sigfn = -1;
static void sigfn(int sig)
{
struct rseq_abi *rs = rseq_get_abi();
cpu_id_in_sigfn = rs->cpu_id_start;
}
FIXTURE_SETUP(legacy)
{
int res = __rseq_register_current_thread(true, true);
switch (res) {
case -ENOSYS:
SKIP(return, "RSEQ not enabled\n");
case -EBUSY:
SKIP(return, "GLIBC owns RSEQ. Disable GLIBC RSEQ registration\n");
default:
ASSERT_EQ(res, 0);
}
ASSERT_NE(signal(SIGUSR1, sigfn), SIG_ERR);
}
FIXTURE_TEARDOWN(legacy)
{
}
TEST_F(legacy, legacy_test)
{
struct rseq_abi *rs = rseq_get_abi();
ASSERT_NE(rs, NULL);
/* Overwrite rs::cpu_id_start */
rs->cpu_id_start = -1;
sleep(1);
ASSERT_NE(rs->cpu_id_start, -1);
rs->cpu_id_start = -1;
ASSERT_EQ(raise(SIGUSR1), 0);
ASSERT_NE(rs->cpu_id_start, -1);
ASSERT_NE(cpu_id_in_sigfn, -1);
}
TEST_HARNESS_MAIN
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