1f08c3bdfSopenharmony_ci// SPDX-License-Identifier: GPL-2.0-or-later 2f08c3bdfSopenharmony_ci/* 3f08c3bdfSopenharmony_ci * Copyright (c) 2019 SUSE LLC 4f08c3bdfSopenharmony_ci * Author: Jorik Cronenberg <jcronenberg@suse.de> 5f08c3bdfSopenharmony_ci * 6f08c3bdfSopenharmony_ci * Test vmsplice() from a pipe into user memory 7f08c3bdfSopenharmony_ci */ 8f08c3bdfSopenharmony_ci 9f08c3bdfSopenharmony_ci#define _GNU_SOURCE 10f08c3bdfSopenharmony_ci 11f08c3bdfSopenharmony_ci#include "tst_test.h" 12f08c3bdfSopenharmony_ci#include "lapi/fcntl.h" 13f08c3bdfSopenharmony_ci#include "lapi/vmsplice.h" 14f08c3bdfSopenharmony_ci 15f08c3bdfSopenharmony_ci 16f08c3bdfSopenharmony_ci#define TEST_BLOCK_SIZE (64*1024) /* 64K */ 17f08c3bdfSopenharmony_ci 18f08c3bdfSopenharmony_cistatic char buffer[TEST_BLOCK_SIZE]; 19f08c3bdfSopenharmony_cistatic struct iovec *iov; 20f08c3bdfSopenharmony_ci 21f08c3bdfSopenharmony_cistatic void vmsplice_test(void) 22f08c3bdfSopenharmony_ci{ 23f08c3bdfSopenharmony_ci int written, i; 24f08c3bdfSopenharmony_ci int pipes[2]; 25f08c3bdfSopenharmony_ci char *arr_write = iov->iov_base; 26f08c3bdfSopenharmony_ci 27f08c3bdfSopenharmony_ci memset(iov->iov_base, 0, iov->iov_len); 28f08c3bdfSopenharmony_ci 29f08c3bdfSopenharmony_ci SAFE_PIPE(pipes); 30f08c3bdfSopenharmony_ci SAFE_WRITE(SAFE_WRITE_ALL, pipes[1], buffer, TEST_BLOCK_SIZE); 31f08c3bdfSopenharmony_ci written = vmsplice(pipes[0], iov, 1, 0); 32f08c3bdfSopenharmony_ci 33f08c3bdfSopenharmony_ci if (written < 0) 34f08c3bdfSopenharmony_ci tst_brk(TBROK | TERRNO, "vmsplice() failed"); 35f08c3bdfSopenharmony_ci 36f08c3bdfSopenharmony_ci if (written == 0) { 37f08c3bdfSopenharmony_ci tst_res(TFAIL, "vmsplice() didn't write anything"); 38f08c3bdfSopenharmony_ci } else { 39f08c3bdfSopenharmony_ci for (i = 0; i < TEST_BLOCK_SIZE; i++) { 40f08c3bdfSopenharmony_ci if (arr_write[i] != buffer[i]) { 41f08c3bdfSopenharmony_ci tst_res(TFAIL, 42f08c3bdfSopenharmony_ci "Wrong data in user memory at %i", i); 43f08c3bdfSopenharmony_ci break; 44f08c3bdfSopenharmony_ci } 45f08c3bdfSopenharmony_ci } 46f08c3bdfSopenharmony_ci if (i == written) 47f08c3bdfSopenharmony_ci tst_res(TPASS, "Spliced correctly into user memory"); 48f08c3bdfSopenharmony_ci } 49f08c3bdfSopenharmony_ci 50f08c3bdfSopenharmony_ci SAFE_CLOSE(pipes[1]); 51f08c3bdfSopenharmony_ci SAFE_CLOSE(pipes[0]); 52f08c3bdfSopenharmony_ci} 53f08c3bdfSopenharmony_ci 54f08c3bdfSopenharmony_cistatic void setup(void) 55f08c3bdfSopenharmony_ci{ 56f08c3bdfSopenharmony_ci int i; 57f08c3bdfSopenharmony_ci 58f08c3bdfSopenharmony_ci for (i = 0; i < TEST_BLOCK_SIZE; i++) 59f08c3bdfSopenharmony_ci buffer[i] = i & 0xff; 60f08c3bdfSopenharmony_ci} 61f08c3bdfSopenharmony_ci 62f08c3bdfSopenharmony_cistatic struct tst_test test = { 63f08c3bdfSopenharmony_ci .setup = setup, 64f08c3bdfSopenharmony_ci .test_all = vmsplice_test, 65f08c3bdfSopenharmony_ci .bufs = (struct tst_buffers []) { 66f08c3bdfSopenharmony_ci {&iov, .iov_sizes = (int[]){TEST_BLOCK_SIZE, -1}}, 67f08c3bdfSopenharmony_ci {} 68f08c3bdfSopenharmony_ci } 69f08c3bdfSopenharmony_ci}; 70