// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ #include <test_progs.h> #include <time.h> #include "test_varlen.skel.h" #define CHECK_VAL(got, exp) \ CHECK((got) != (exp), "check", "got %ld != exp %ld\n", \ (long)(got), (long)(exp)) void test_varlen(void) { int duration = 0, err; struct test_varlen* skel; struct test_varlen__bss *bss; struct test_varlen__data *data; const char str1[] = "Hello, "; const char str2[] = "World!"; const char exp_str[] = "Hello, \0World!\0"; const int size1 = sizeof(str1); const int size2 = sizeof(str2); skel = test_varlen__open_and_load(); if (CHECK(!skel, "skel_open", "failed to open skeleton\n")) return; bss = skel->bss; data = skel->data; err = test_varlen__attach(skel); if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err)) goto cleanup; bss->test_pid = getpid(); /* trigger everything */ memcpy(bss->buf_in1, str1, size1); memcpy(bss->buf_in2, str2, size2); bss->capture = true; usleep(1); bss->capture = false; CHECK_VAL(bss->payload1_len1, size1); CHECK_VAL(bss->payload1_len2, size2); CHECK_VAL(bss->total1, size1 + size2); CHECK(memcmp(bss->payload1, exp_str, size1 + size2), "content_check", "doesn't match!\n"); CHECK_VAL(data->payload2_len1, size1); CHECK_VAL(data->payload2_len2, size2); CHECK_VAL(data->total2, size1 + size2); CHECK(memcmp(data->payload2, exp_str, size1 + size2), "content_check", "doesn't match!\n"); CHECK_VAL(data->payload3_len1, size1); CHECK_VAL(data->payload3_len2, size2); CHECK_VAL(data->total3, size1 + size2); CHECK(memcmp(data->payload3, exp_str, size1 + size2), "content_check", "doesn't match!\n"); CHECK_VAL(data->payload4_len1, size1); CHECK_VAL(data->payload4_len2, size2); CHECK_VAL(data->total4, size1 + size2); CHECK(memcmp(data->payload4, exp_str, size1 + size2), "content_check", "doesn't match!\n"); CHECK_VAL(bss->ret_bad_read, -EFAULT); CHECK_VAL(data->payload_bad[0], 0x42); CHECK_VAL(data->payload_bad[1], 0x42); CHECK_VAL(data->payload_bad[2], 0); CHECK_VAL(data->payload_bad[3], 0x42); CHECK_VAL(data->payload_bad[4], 0x42); cleanup: test_varlen__destroy(skel); }