1f08c3bdfSopenharmony_ci// SPDX-License-Identifier: GPL-2.0-or-later 2f08c3bdfSopenharmony_ci/* 3f08c3bdfSopenharmony_ci * Copyright (c) 2021 FUJITSU LIMITED. All rights reserved. 4f08c3bdfSopenharmony_ci * Author: Yang Xu <xuyang2018.jy@fujitsu.com> 5f08c3bdfSopenharmony_ci */ 6f08c3bdfSopenharmony_ci 7f08c3bdfSopenharmony_ci/*\ 8f08c3bdfSopenharmony_ci * [Description] 9f08c3bdfSopenharmony_ci * 10f08c3bdfSopenharmony_ci * Test whether the file offset are the same for both file descriptors. 11f08c3bdfSopenharmony_ci */ 12f08c3bdfSopenharmony_ci 13f08c3bdfSopenharmony_ci#include <errno.h> 14f08c3bdfSopenharmony_ci#include <stdio.h> 15f08c3bdfSopenharmony_ci#include <unistd.h> 16f08c3bdfSopenharmony_ci#include "tst_test.h" 17f08c3bdfSopenharmony_ci#include "tst_safe_macros.h" 18f08c3bdfSopenharmony_ci 19f08c3bdfSopenharmony_ci#define WRITE_STR "abcdefg" 20f08c3bdfSopenharmony_ci 21f08c3bdfSopenharmony_cistatic int ofd = -1, nfd = 10; 22f08c3bdfSopenharmony_ci 23f08c3bdfSopenharmony_cistatic struct tcase { 24f08c3bdfSopenharmony_ci off_t offset; 25f08c3bdfSopenharmony_ci size_t exp_size; 26f08c3bdfSopenharmony_ci /* 0 - change offset before dup2, 1 - change offset after dup2 */ 27f08c3bdfSopenharmony_ci int flag; 28f08c3bdfSopenharmony_ci char *exp_data; 29f08c3bdfSopenharmony_ci char *desc; 30f08c3bdfSopenharmony_ci} tcases[] = { 31f08c3bdfSopenharmony_ci {1, 6, 0, "bcdefg", "Test offset with lseek before dup2"}, 32f08c3bdfSopenharmony_ci {2, 5, 1, "cdefg", "Test offset with lseek after dup2"}, 33f08c3bdfSopenharmony_ci}; 34f08c3bdfSopenharmony_ci 35f08c3bdfSopenharmony_cistatic void setup(void) 36f08c3bdfSopenharmony_ci{ 37f08c3bdfSopenharmony_ci ofd = SAFE_OPEN("testfile", O_RDWR | O_CREAT, 0644); 38f08c3bdfSopenharmony_ci SAFE_WRITE(SAFE_WRITE_ALL, ofd, WRITE_STR, sizeof(WRITE_STR) - 1); 39f08c3bdfSopenharmony_ci} 40f08c3bdfSopenharmony_ci 41f08c3bdfSopenharmony_cistatic void cleanup(void) 42f08c3bdfSopenharmony_ci{ 43f08c3bdfSopenharmony_ci if (ofd > 0) 44f08c3bdfSopenharmony_ci SAFE_CLOSE(ofd); 45f08c3bdfSopenharmony_ci close(nfd); 46f08c3bdfSopenharmony_ci} 47f08c3bdfSopenharmony_ci 48f08c3bdfSopenharmony_cistatic void run(unsigned int i) 49f08c3bdfSopenharmony_ci{ 50f08c3bdfSopenharmony_ci struct tcase *tc = tcases + i; 51f08c3bdfSopenharmony_ci char read_buf[20]; 52f08c3bdfSopenharmony_ci 53f08c3bdfSopenharmony_ci memset(read_buf, 0, sizeof(read_buf)); 54f08c3bdfSopenharmony_ci 55f08c3bdfSopenharmony_ci tst_res(TINFO, "%s", tc->desc); 56f08c3bdfSopenharmony_ci if (!tc->flag) 57f08c3bdfSopenharmony_ci SAFE_LSEEK(ofd, tc->offset, SEEK_SET); 58f08c3bdfSopenharmony_ci 59f08c3bdfSopenharmony_ci TEST(dup2(ofd, nfd)); 60f08c3bdfSopenharmony_ci if (TST_RET == -1) { 61f08c3bdfSopenharmony_ci tst_res(TFAIL | TTERRNO, "call failed unexpectedly"); 62f08c3bdfSopenharmony_ci return; 63f08c3bdfSopenharmony_ci } 64f08c3bdfSopenharmony_ci if (tc->flag) 65f08c3bdfSopenharmony_ci SAFE_LSEEK(ofd, tc->offset, SEEK_SET); 66f08c3bdfSopenharmony_ci 67f08c3bdfSopenharmony_ci SAFE_READ(1, nfd, read_buf, tc->exp_size); 68f08c3bdfSopenharmony_ci if (strncmp(read_buf, tc->exp_data, tc->exp_size)) 69f08c3bdfSopenharmony_ci tst_res(TFAIL, "Expect %s, but get %s.", tc->exp_data, read_buf); 70f08c3bdfSopenharmony_ci else 71f08c3bdfSopenharmony_ci tst_res(TPASS, "Get expected buf %s", read_buf); 72f08c3bdfSopenharmony_ci} 73f08c3bdfSopenharmony_ci 74f08c3bdfSopenharmony_cistatic struct tst_test test = { 75f08c3bdfSopenharmony_ci .needs_tmpdir = 1, 76f08c3bdfSopenharmony_ci .tcnt = ARRAY_SIZE(tcases), 77f08c3bdfSopenharmony_ci .test = run, 78f08c3bdfSopenharmony_ci .setup = setup, 79f08c3bdfSopenharmony_ci .cleanup = cleanup, 80f08c3bdfSopenharmony_ci}; 81