1f08c3bdfSopenharmony_ci// SPDX-License-Identifier: GPL-2.0-or-later 2f08c3bdfSopenharmony_ci/* 3f08c3bdfSopenharmony_ci * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved. 4f08c3bdfSopenharmony_ci * Copyright (c) 2017 Fujitsu Ltd. 5f08c3bdfSopenharmony_ci */ 6f08c3bdfSopenharmony_ci 7f08c3bdfSopenharmony_ci#include <stdio.h> 8f08c3bdfSopenharmony_ci#include <string.h> 9f08c3bdfSopenharmony_ci#include <errno.h> 10f08c3bdfSopenharmony_ci#include "tst_test.h" 11f08c3bdfSopenharmony_ci 12f08c3bdfSopenharmony_cistatic int fd; 13f08c3bdfSopenharmony_ci 14f08c3bdfSopenharmony_cistatic void verify_write(void) 15f08c3bdfSopenharmony_ci{ 16f08c3bdfSopenharmony_ci int i, badcount = 0; 17f08c3bdfSopenharmony_ci char buf[BUFSIZ]; 18f08c3bdfSopenharmony_ci 19f08c3bdfSopenharmony_ci memset(buf, 'w', BUFSIZ); 20f08c3bdfSopenharmony_ci 21f08c3bdfSopenharmony_ci SAFE_LSEEK(fd, 0, SEEK_SET); 22f08c3bdfSopenharmony_ci 23f08c3bdfSopenharmony_ci for (i = BUFSIZ; i > 0; i--) { 24f08c3bdfSopenharmony_ci TEST(write(fd, buf, i)); 25f08c3bdfSopenharmony_ci if (TST_RET == -1) { 26f08c3bdfSopenharmony_ci tst_res(TFAIL | TTERRNO, "write failed"); 27f08c3bdfSopenharmony_ci return; 28f08c3bdfSopenharmony_ci } 29f08c3bdfSopenharmony_ci 30f08c3bdfSopenharmony_ci if (TST_RET != i) { 31f08c3bdfSopenharmony_ci badcount++; 32f08c3bdfSopenharmony_ci tst_res(TINFO, "write() returned %ld, expected %d", 33f08c3bdfSopenharmony_ci TST_RET, i); 34f08c3bdfSopenharmony_ci } 35f08c3bdfSopenharmony_ci } 36f08c3bdfSopenharmony_ci 37f08c3bdfSopenharmony_ci if (badcount != 0) 38f08c3bdfSopenharmony_ci tst_res(TFAIL, "write() failed to return proper count"); 39f08c3bdfSopenharmony_ci else 40f08c3bdfSopenharmony_ci tst_res(TPASS, "write() passed"); 41f08c3bdfSopenharmony_ci} 42f08c3bdfSopenharmony_ci 43f08c3bdfSopenharmony_cistatic void setup(void) 44f08c3bdfSopenharmony_ci{ 45f08c3bdfSopenharmony_ci fd = SAFE_OPEN("test_file", O_RDWR | O_CREAT, 0700); 46f08c3bdfSopenharmony_ci} 47f08c3bdfSopenharmony_ci 48f08c3bdfSopenharmony_cistatic void cleanup(void) 49f08c3bdfSopenharmony_ci{ 50f08c3bdfSopenharmony_ci if (fd > 0) 51f08c3bdfSopenharmony_ci SAFE_CLOSE(fd); 52f08c3bdfSopenharmony_ci} 53f08c3bdfSopenharmony_ci 54f08c3bdfSopenharmony_cistatic struct tst_test test = { 55f08c3bdfSopenharmony_ci .setup = setup, 56f08c3bdfSopenharmony_ci .cleanup = cleanup, 57f08c3bdfSopenharmony_ci .test_all = verify_write, 58f08c3bdfSopenharmony_ci .needs_tmpdir = 1, 59f08c3bdfSopenharmony_ci}; 60