1272343Sngie/* $NetBSD: t_fflush.c,v 1.1 2011/09/11 05:15:55 jruoho Exp $ */ 2272343Sngie 3272343Sngie/*- 4272343Sngie * Copyright (c) 2011 The NetBSD Foundation, Inc. 5272343Sngie * All rights reserved. 6272343Sngie * 7272343Sngie * This code is derived from software contributed to The NetBSD Foundation 8272343Sngie * by Jukka Ruohonen. 9272343Sngie * 10272343Sngie * Redistribution and use in source and binary forms, with or without 11272343Sngie * modification, are permitted provided that the following conditions 12272343Sngie * are met: 13272343Sngie * 1. Redistributions of source code must retain the above copyright 14272343Sngie * notice, this list of conditions and the following disclaimer. 15272343Sngie * 2. Redistributions in binary form must reproduce the above copyright 16272343Sngie * notice, this list of conditions and the following disclaimer in the 17272343Sngie * documentation and/or other materials provided with the distribution. 18272343Sngie * 19272343Sngie * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20272343Sngie * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21272343Sngie * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22272343Sngie * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23272343Sngie * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24272343Sngie * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25272343Sngie * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26272343Sngie * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27272343Sngie * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28272343Sngie * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29272343Sngie * POSSIBILITY OF SUCH DAMAGE. 30272343Sngie */ 31272343Sngie#include <sys/cdefs.h> 32272343Sngie__RCSID("$NetBSD: t_fflush.c,v 1.1 2011/09/11 05:15:55 jruoho Exp $"); 33272343Sngie 34272343Sngie#include <atf-c.h> 35272343Sngie#include <errno.h> 36272343Sngie#include <stdio.h> 37272343Sngie#include <unistd.h> 38272343Sngie 39272343Sngiestatic const char *path = "fflush"; 40272343Sngie 41272343SngieATF_TC_WITH_CLEANUP(fflush_err); 42272343SngieATF_TC_HEAD(fflush_err, tc) 43272343Sngie{ 44272343Sngie atf_tc_set_md_var(tc, "descr", "Test errors from fflush(3)"); 45272343Sngie} 46272343Sngie 47272343SngieATF_TC_BODY(fflush_err, tc) 48272343Sngie{ 49272343Sngie FILE *f; 50272343Sngie 51276478Sngie#ifdef __FreeBSD__ 52276478Sngie atf_tc_expect_fail("the EOF invariant fails on FreeBSD; this is new"); 53276478Sngie#endif 54276478Sngie 55272343Sngie f = fopen(path, "w"); 56272343Sngie 57272343Sngie ATF_REQUIRE(f != NULL); 58272343Sngie ATF_REQUIRE(fflush(NULL) == 0); 59272343Sngie ATF_REQUIRE(fclose(f) == 0); 60272343Sngie 61272343Sngie f = fopen(path, "r"); 62272343Sngie ATF_REQUIRE(f != NULL); 63272343Sngie 64272343Sngie /* 65272343Sngie * In NetBSD the call should fail if the supplied 66272343Sngie * parameteris not an open stream or the stream is 67272343Sngie * not open for writing. 68272343Sngie */ 69272343Sngie errno = 0; 70272343Sngie ATF_REQUIRE_ERRNO(EBADF, fflush(f) == EOF); 71272343Sngie 72272343Sngie ATF_REQUIRE(fclose(f) == 0); 73272343Sngie 74272343Sngie errno = 0; 75272343Sngie ATF_REQUIRE_ERRNO(EBADF, fflush(f) == EOF); 76272343Sngie 77272343Sngie (void)unlink(path); 78272343Sngie} 79272343Sngie 80272343SngieATF_TC_CLEANUP(fflush_err, tc) 81272343Sngie{ 82272343Sngie (void)unlink(path); 83272343Sngie} 84272343Sngie 85272343SngieATF_TC_WITH_CLEANUP(fflush_seek); 86272343SngieATF_TC_HEAD(fflush_seek, tc) 87272343Sngie{ 88272343Sngie atf_tc_set_md_var(tc, "descr", "Test file offsets with fflush(3)"); 89272343Sngie} 90272343Sngie 91272343SngieATF_TC_BODY(fflush_seek, tc) 92272343Sngie{ 93272343Sngie char buf[12]; 94272343Sngie int fd = -1; 95272343Sngie FILE *f; 96272343Sngie 97272343Sngie /* 98272343Sngie * IEEE Std 1003.1-2008: 99272343Sngie * 100272343Sngie * "For a stream open for reading, if the file 101272343Sngie * is not already at EOF, and the file is one 102272343Sngie * capable of seeking, the file offset of the 103272343Sngie * underlying open file description shall be 104272343Sngie * adjusted so that the next operation on the 105272343Sngie * open file description deals with the byte 106272343Sngie * after the last one read from or written to 107272343Sngie * the stream being flushed." 108272343Sngie */ 109272343Sngie f = fopen(path, "w"); 110272343Sngie ATF_REQUIRE(f != NULL); 111272343Sngie 112272343Sngie ATF_REQUIRE(fwrite("garbage", 1, 7, f) == 7); 113272343Sngie ATF_REQUIRE(fclose(f) == 0); 114272343Sngie 115272343Sngie f = fopen(path, "r+"); 116272343Sngie ATF_REQUIRE(f != NULL); 117272343Sngie 118272343Sngie fd = fileno(f); 119272343Sngie ATF_REQUIRE(fd != -1); 120272343Sngie 121272343Sngie ATF_REQUIRE(fread(buf, 1, 3, f) == 3); 122272343Sngie ATF_REQUIRE(fflush(f) == 0); 123272343Sngie ATF_REQUIRE(fseek(f, 0, SEEK_CUR) == 0); 124272343Sngie 125272343Sngie /* 126272343Sngie * Verify that the offsets are right and that 127272343Sngie * a read operation resumes at the correct location. 128272343Sngie */ 129272343Sngie ATF_REQUIRE(ftell(f) == 3); 130272343Sngie ATF_REQUIRE(lseek(fd, 0, SEEK_CUR) == 3); 131272343Sngie ATF_REQUIRE(fgetc(f) == 'b'); 132272343Sngie 133272343Sngie ATF_REQUIRE(fclose(f) == 0); 134272343Sngie ATF_REQUIRE(unlink(path) == 0); 135272343Sngie} 136272343Sngie 137272343SngieATF_TC_CLEANUP(fflush_seek, tc) 138272343Sngie{ 139272343Sngie (void)unlink(path); 140272343Sngie} 141272343Sngie 142272343SngieATF_TC_WITH_CLEANUP(fpurge_err); 143272343SngieATF_TC_HEAD(fpurge_err, tc) 144272343Sngie{ 145272343Sngie atf_tc_set_md_var(tc, "descr", "Test errors from fpurge(3)"); 146272343Sngie} 147272343Sngie 148272343SngieATF_TC_BODY(fpurge_err, tc) 149272343Sngie{ 150272343Sngie FILE *f; 151272343Sngie 152272343Sngie f = fopen(path, "w"); 153272343Sngie ATF_REQUIRE(f != NULL); 154272343Sngie ATF_REQUIRE(fclose(f) == 0); 155272343Sngie 156272343Sngie errno = 0; 157272343Sngie ATF_REQUIRE_ERRNO(EBADF, fpurge(f) == EOF); 158272343Sngie 159272343Sngie (void)unlink(path); 160272343Sngie} 161272343Sngie 162272343SngieATF_TC_CLEANUP(fpurge_err, tc) 163272343Sngie{ 164272343Sngie (void)unlink(path); 165272343Sngie} 166272343Sngie 167272343SngieATF_TP_ADD_TCS(tp) 168272343Sngie{ 169272343Sngie 170272343Sngie ATF_TP_ADD_TC(tp, fflush_err); 171272343Sngie ATF_TP_ADD_TC(tp, fflush_seek); 172272343Sngie ATF_TP_ADD_TC(tp, fpurge_err); 173272343Sngie 174272343Sngie return atf_no_error(); 175272343Sngie} 176