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/* $NetBSD: t_fflush.c,v 1.1 2011/09/11 05:15:55 jruoho Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jukka Ruohonen.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: t_fflush.c,v 1.1 2011/09/11 05:15:55 jruoho Exp $");
#include <atf-c.h>
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
static const char *path = "fflush";
ATF_TC_WITH_CLEANUP(fflush_err);
ATF_TC_HEAD(fflush_err, tc)
{
atf_tc_set_md_var(tc, "descr", "Test errors from fflush(3)");
}
ATF_TC_BODY(fflush_err, tc)
{
FILE *f;
#ifdef __FreeBSD__
atf_tc_expect_fail("the EOF invariant fails on FreeBSD; this is new");
#endif
f = fopen(path, "w");
ATF_REQUIRE(f != NULL);
ATF_REQUIRE(fflush(NULL) == 0);
ATF_REQUIRE(fclose(f) == 0);
f = fopen(path, "r");
ATF_REQUIRE(f != NULL);
/*
* In NetBSD the call should fail if the supplied
* parameteris not an open stream or the stream is
* not open for writing.
*/
errno = 0;
ATF_REQUIRE_ERRNO(EBADF, fflush(f) == EOF);
ATF_REQUIRE(fclose(f) == 0);
errno = 0;
ATF_REQUIRE_ERRNO(EBADF, fflush(f) == EOF);
(void)unlink(path);
}
ATF_TC_CLEANUP(fflush_err, tc)
{
(void)unlink(path);
}
ATF_TC_WITH_CLEANUP(fflush_seek);
ATF_TC_HEAD(fflush_seek, tc)
{
atf_tc_set_md_var(tc, "descr", "Test file offsets with fflush(3)");
}
ATF_TC_BODY(fflush_seek, tc)
{
char buf[12];
int fd = -1;
FILE *f;
/*
* IEEE Std 1003.1-2008:
*
* "For a stream open for reading, if the file
* is not already at EOF, and the file is one
* capable of seeking, the file offset of the
* underlying open file description shall be
* adjusted so that the next operation on the
* open file description deals with the byte
* after the last one read from or written to
* the stream being flushed."
*/
f = fopen(path, "w");
ATF_REQUIRE(f != NULL);
ATF_REQUIRE(fwrite("garbage", 1, 7, f) == 7);
ATF_REQUIRE(fclose(f) == 0);
f = fopen(path, "r+");
ATF_REQUIRE(f != NULL);
fd = fileno(f);
ATF_REQUIRE(fd != -1);
ATF_REQUIRE(fread(buf, 1, 3, f) == 3);
ATF_REQUIRE(fflush(f) == 0);
ATF_REQUIRE(fseek(f, 0, SEEK_CUR) == 0);
/*
* Verify that the offsets are right and that
* a read operation resumes at the correct location.
*/
ATF_REQUIRE(ftell(f) == 3);
ATF_REQUIRE(lseek(fd, 0, SEEK_CUR) == 3);
ATF_REQUIRE(fgetc(f) == 'b');
ATF_REQUIRE(fclose(f) == 0);
ATF_REQUIRE(unlink(path) == 0);
}
ATF_TC_CLEANUP(fflush_seek, tc)
{
(void)unlink(path);
}
ATF_TC_WITH_CLEANUP(fpurge_err);
ATF_TC_HEAD(fpurge_err, tc)
{
atf_tc_set_md_var(tc, "descr", "Test errors from fpurge(3)");
}
ATF_TC_BODY(fpurge_err, tc)
{
FILE *f;
f = fopen(path, "w");
ATF_REQUIRE(f != NULL);
ATF_REQUIRE(fclose(f) == 0);
errno = 0;
ATF_REQUIRE_ERRNO(EBADF, fpurge(f) == EOF);
(void)unlink(path);
}
ATF_TC_CLEANUP(fpurge_err, tc)
{
(void)unlink(path);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, fflush_err);
ATF_TP_ADD_TC(tp, fflush_seek);
ATF_TP_ADD_TC(tp, fpurge_err);
return atf_no_error();
}
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