// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2020, Oracle and/or its affiliates. */

#include <test_progs.h>

#include "trace_printk.lskel.h"

#define SEARCHMSG       "testing,testing"

static void trace_pipe_cb(const char *str, void *data)
{
        if (strstr(str, SEARCHMSG) != NULL)
                (*(int *)data)++;
}

void serial_test_trace_printk(void)
{
        struct trace_printk_lskel__bss *bss;
        struct trace_printk_lskel *skel;
        int err = 0, found = 0;

        skel = trace_printk_lskel__open();
        if (!ASSERT_OK_PTR(skel, "trace_printk__open"))
                return;

        ASSERT_EQ(skel->rodata->fmt[0], 'T', "skel->rodata->fmt[0]");
        skel->rodata->fmt[0] = 't';

        err = trace_printk_lskel__load(skel);
        if (!ASSERT_OK(err, "trace_printk__load"))
                goto cleanup;

        bss = skel->bss;

        err = trace_printk_lskel__attach(skel);
        if (!ASSERT_OK(err, "trace_printk__attach"))
                goto cleanup;

        /* wait for tracepoint to trigger */
        usleep(1);
        trace_printk_lskel__detach(skel);

        if (!ASSERT_GT(bss->trace_printk_ran, 0, "bss->trace_printk_ran"))
                goto cleanup;

        if (!ASSERT_GT(bss->trace_printk_ret, 0, "bss->trace_printk_ret"))
                goto cleanup;

        /* verify our search string is in the trace buffer */
        ASSERT_OK(read_trace_pipe_iter(trace_pipe_cb, &found, 1000),
                 "read_trace_pipe_iter");

        if (!ASSERT_EQ(found, bss->trace_printk_ran, "found"))
                goto cleanup;

cleanup:
        trace_printk_lskel__destroy(skel);
}