minix/tests/lib/libc/stdio/t_fopen.c

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/* $NetBSD: t_fopen.c,v 1.3 2011/09/14 14:34:37 martin 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_fopen.c,v 1.3 2011/09/14 14:34:37 martin Exp $");
#include <atf-c.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <paths.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
static const char *path = "fopen";
ATF_TC_WITH_CLEANUP(fdopen_close);
ATF_TC_HEAD(fdopen_close, tc)
{
atf_tc_set_md_var(tc, "descr", "See that descriptors are closed");
}
ATF_TC_BODY(fdopen_close, tc)
{
FILE *f;
int fd;
/*
* Check that the file descriptor
* used to fdopen(3) a stream is
* closed once the stream is closed.
*/
fd = open(path, O_RDWR | O_CREAT);
ATF_REQUIRE(fd >= 0);
f = fdopen(fd, "w+");
ATF_REQUIRE(f != NULL);
ATF_REQUIRE(fclose(f) == 0);
ATF_REQUIRE(close(fd) == -1);
ATF_REQUIRE(unlink(path) == 0);
}
ATF_TC_CLEANUP(fdopen_close, tc)
{
(void)unlink(path);
}
ATF_TC_WITH_CLEANUP(fdopen_err);
ATF_TC_HEAD(fdopen_err, tc)
{
atf_tc_set_md_var(tc, "descr", "Test errors from fdopen(3)");
}
ATF_TC_BODY(fdopen_err, tc)
{
int fd;
fd = open(path, O_RDONLY | O_CREAT);
ATF_REQUIRE(fd >= 0);
errno = 0;
ATF_REQUIRE_ERRNO(EINVAL, fdopen(fd, "w") == NULL);
errno = 0;
ATF_REQUIRE_ERRNO(EINVAL, fdopen(fd, "a") == NULL);
ATF_REQUIRE(close(fd) == 0);
errno = 0;
ATF_REQUIRE_ERRNO(EBADF, fdopen(fd, "r") == NULL);
errno = 0;
ATF_REQUIRE_ERRNO(EBADF, fdopen(-1, "w+") == NULL);
(void)unlink(path);
}
ATF_TC_CLEANUP(fdopen_err, tc)
{
(void)unlink(path);
}
ATF_TC_WITH_CLEANUP(fdopen_seek);
ATF_TC_HEAD(fdopen_seek, tc)
{
atf_tc_set_md_var(tc, "descr", "Test stream position with fdopen(3)");
}
ATF_TC_BODY(fdopen_seek, tc)
{
FILE *f;
int fd;
/*
* Verify that the file position associated
* with the stream corresponds with the offset
* set earlier for the file descriptor.
*/
fd = open(path, O_RDWR | O_CREAT);
ATF_REQUIRE(fd >= 0);
ATF_REQUIRE(write(fd, "garbage", 7) == 7);
ATF_REQUIRE(lseek(fd, 3, SEEK_SET) == 3);
f = fdopen(fd, "r+");
ATF_REQUIRE(f != NULL);
ATF_REQUIRE(ftell(f) == 3);
ATF_REQUIRE(fclose(f) == 0);
ATF_REQUIRE(unlink(path) == 0);
}
ATF_TC_CLEANUP(fdopen_seek, tc)
{
(void)unlink(path);
}
ATF_TC_WITH_CLEANUP(fopen_err);
ATF_TC_HEAD(fopen_err, tc)
{
atf_tc_set_md_var(tc, "descr", "Test errors from fopen(3)");
}
ATF_TC_BODY(fopen_err, tc)
{
static const char *mode[] = {
"x", "xr", "xr", "+r+", "R", "W+", " aXX", "Xr", " r+", "" };
char buf[PATH_MAX + 1];
size_t i;
FILE *f;
f = fopen(path, "w+");
ATF_REQUIRE(f != NULL);
ATF_REQUIRE(fclose(f) == 0);
/*
* Note that also "invalid" characters
* may follow the mode-string whenever
* the first character is valid.
*/
for (i = 0; i < __arraycount(mode); i++) {
errno = 0;
f = fopen(path, mode[i]);
if (f == NULL && errno == EINVAL)
continue;
if (f != NULL)
(void)fclose(f);
atf_tc_fail_nonfatal("opened file as '%s'", mode[i]);
}
(void)unlink(path);
(void)memset(buf, 'x', sizeof(buf));
errno = 0;
ATF_REQUIRE_ERRNO(EISDIR, fopen("/usr/bin", "w") == NULL);
errno = 0;
ATF_REQUIRE_ERRNO(ENOENT, fopen("/a/b/c/d/e/f", "r") == NULL);
errno = 0;
ATF_REQUIRE_ERRNO(ENAMETOOLONG, fopen(buf, "r+") == NULL);
}
ATF_TC_CLEANUP(fopen_err, tc)
{
(void)unlink(path);
}
ATF_TC_WITH_CLEANUP(fopen_append);
ATF_TC_HEAD(fopen_append, tc)
{
atf_tc_set_md_var(tc, "descr", "Test that append-mode works");
}
ATF_TC_BODY(fopen_append, tc)
{
char buf[15];
FILE *f;
(void)memset(buf, 'x', sizeof(buf));
f = fopen(path, "w+");
ATF_REQUIRE(f != NULL);
ATF_REQUIRE(fwrite("garbage", 1, 7, f) == 7);
ATF_REQUIRE(fclose(f) == 0);
f = fopen(path, "a");
ATF_REQUIRE(fwrite("garbage", 1, 7, f) == 7);
ATF_REQUIRE(fclose(f) == 0);
f = fopen(path, "r");
ATF_REQUIRE(fread(buf, 1, sizeof(buf), f) == 14);
ATF_REQUIRE(strncmp(buf, "garbagegarbage", 14) == 0);
ATF_REQUIRE(fclose(f) == 0);
ATF_REQUIRE(unlink(path) == 0);
}
ATF_TC_CLEANUP(fopen_append, tc)
{
(void)unlink(path);
}
ATF_TC_WITH_CLEANUP(fopen_mode);
ATF_TC_HEAD(fopen_mode, tc)
{
atf_tc_set_md_var(tc, "descr", "Test fopen(3) modes");
}
ATF_TC_BODY(fopen_mode, tc)
{
size_t i;
FILE *f;
static const char *mode[] = {
"r", "r+", "w", "w+", "a", "a+",
"rb", "r+b", "wb", "w+b", "ab", "a+b"
"re", "r+e", "we", "w+e", "ae", "a+e"
"rf", "r+f", "wf", "w+f", "af", "a+f"
};
f = fopen(path, "w+");
ATF_REQUIRE(f != NULL);
ATF_REQUIRE(fclose(f) == 0);
/*
* Verify that various modes work.
*/
for (i = 0; i < __arraycount(mode); i++) {
f = fopen(path, mode[i]);
if (f != NULL) {
ATF_REQUIRE(fclose(f) == 0);
continue;
}
atf_tc_fail_nonfatal("failed to open file as %s", mode[i]);
}
(void)unlink(path);
}
ATF_TC_CLEANUP(fopen_mode, tc)
{
(void)unlink(path);
}
ATF_TC(fopen_perm);
ATF_TC_HEAD(fopen_perm, tc)
{
atf_tc_set_md_var(tc, "descr", "Test permissions with fopen(3)");
atf_tc_set_md_var(tc, "require.user", "unprivileged");
}
ATF_TC_BODY(fopen_perm, tc)
{
errno = 0;
ATF_REQUIRE_ERRNO(EACCES, fopen("/bin/ls", "a+") == NULL);
errno = 0;
ATF_REQUIRE_ERRNO(EACCES, fopen("/bin/ls", "w+") == NULL);
}
ATF_TC(fopen_regular);
ATF_TC_HEAD(fopen_regular, tc)
{
atf_tc_set_md_var(tc, "descr", "Test fopen(3) with 'f' mode");
}
ATF_TC_BODY(fopen_regular, tc)
{
static const char *mode[] = { "rf", "r+f", "wf", "w+f", "af", "a+f" };
static const char *devs[] = { _PATH_DEVNULL };
size_t i, j;
FILE *f;
for (i = 0; i < __arraycount(devs); i++) {
for (j = 0; j < __arraycount(mode); j++) {
errno = 0;
f = fopen(devs[i], mode[j]);
if (f == NULL && errno == EFTYPE)
continue;
if (f != NULL)
(void)fclose(f);
atf_tc_fail_nonfatal("opened %s as %s",
devs[i], mode[j]);
}
}
}
ATF_TC_WITH_CLEANUP(fopen_seek);
ATF_TC_HEAD(fopen_seek, tc)
{
atf_tc_set_md_var(tc, "descr", "Test initial stream position");
}
ATF_TC_BODY(fopen_seek, tc)
{
FILE *f;
f = fopen(path, "w+");
ATF_REQUIRE(f != NULL);
ATF_REQUIRE(fwrite("garbage", 1, 7, f) == 7);
ATF_REQUIRE(fclose(f) == 0);
/*
* The position of the stream should be
* at the start, except for append-mode.
*/
f = fopen(path, "r");
ATF_REQUIRE(f != NULL);
ATF_REQUIRE(ftello(f) == 0);
ATF_REQUIRE(fclose(f) == 0);
f = fopen(path, "a");
ATF_REQUIRE(f != NULL);
ATF_REQUIRE(ftello(f) == 7);
ATF_REQUIRE(fclose(f) == 0);
ATF_REQUIRE(unlink(path) == 0);
}
ATF_TC_CLEANUP(fopen_seek, tc)
{
(void)unlink(path);
}
ATF_TC_WITH_CLEANUP(freopen_std);
ATF_TC_HEAD(freopen_std, tc)
{
atf_tc_set_md_var(tc, "descr", "A basic test of freopen(3)");
}
ATF_TC_BODY(freopen_std, tc)
{
FILE *std[2] = { stdin, stdout };
char buf[15];
size_t i;
FILE *f;
/*
* Associate a standard stream with a custom stream.
* Then write to the standard stream and verify that
* the result now appears in the custom stream.
*/
for (i = 0; i < __arraycount(std); i++) {
(void)memset(buf, 'x', sizeof(buf));
f = fopen(path, "w+");
ATF_REQUIRE(f != NULL);
f = freopen(path, "w+", std[i]);
ATF_REQUIRE(f != NULL);
ATF_REQUIRE(fwrite("garbage", 1, 7, f) == 7);
ATF_REQUIRE(fprintf(std[i], "garbage") == 7);
ATF_REQUIRE(fclose(f) == 0);
f = fopen(path, "r");
ATF_REQUIRE(f != NULL);
ATF_REQUIRE(fread(buf, 1, sizeof(buf), f) == 14);
ATF_REQUIRE(strncmp(buf, "garbagegarbage", 14) == 0);
ATF_REQUIRE(fclose(f) == 0);
}
ATF_REQUIRE(unlink(path) == 0);
}
ATF_TC_CLEANUP(freopen_std, tc)
{
(void)unlink(path);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, fdopen_close);
ATF_TP_ADD_TC(tp, fdopen_err);
ATF_TP_ADD_TC(tp, fdopen_seek);
ATF_TP_ADD_TC(tp, fopen_append);
ATF_TP_ADD_TC(tp, fopen_err);
ATF_TP_ADD_TC(tp, fopen_mode);
ATF_TP_ADD_TC(tp, fopen_perm);
ATF_TP_ADD_TC(tp, fopen_regular);
ATF_TP_ADD_TC(tp, fopen_seek);
ATF_TP_ADD_TC(tp, freopen_std);
return atf_no_error();
}