minix/tests/lib/libc/gen/t_closefrom.c

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/* $NetBSD: t_closefrom.c,v 1.4 2011/05/11 08:11:36 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_closefrom.c,v 1.4 2011/05/11 08:11:36 jruoho Exp $");
#include <sys/wait.h>
#include <atf-c.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <unistd.h>
static const char path[] = "closefrom";
ATF_TC_WITH_CLEANUP(closefrom_basic);
ATF_TC_HEAD(closefrom_basic, tc)
{
atf_tc_set_md_var(tc, "descr", "A basic test of closefrom(3), #1");
}
ATF_TC_BODY(closefrom_basic, tc)
{
int fd, cur1, cur2;
(void)closefrom(STDERR_FILENO + 1);
fd = open(path, O_RDONLY | O_CREAT, 0400);
ATF_REQUIRE(fd >= 0);
cur1 = fcntl(0, F_MAXFD);
ATF_REQUIRE(cur1 == STDERR_FILENO + 1);
ATF_REQUIRE(closefrom(cur1) == 0);
cur2 = fcntl(0, F_MAXFD);
ATF_REQUIRE(cur1 - 1 == cur2);
ATF_REQUIRE(close(fd) == -1);
ATF_REQUIRE(unlink(path) == 0);
}
ATF_TC_CLEANUP(closefrom_basic, tc)
{
(void)unlink(path);
}
ATF_TC_WITH_CLEANUP(closefrom_buffer);
ATF_TC_HEAD(closefrom_buffer, tc)
{
atf_tc_set_md_var(tc, "descr", "A basic test of closefrom(3), #2");
}
ATF_TC_BODY(closefrom_buffer, tc)
{
int buf[16], cur, half;
size_t i;
/*
* Open a buffer of descriptors, close the half of
* these and verify that the result is consistent.
*/
ATF_REQUIRE(closefrom(STDERR_FILENO + 1) == 0);
cur = fcntl(0, F_MAXFD);
ATF_REQUIRE(cur == STDERR_FILENO);
for (i = 0; i < __arraycount(buf); i++) {
buf[i] = open(path, O_RDWR | O_CREAT, 0600);
ATF_REQUIRE(buf[i] >= 0);
}
cur = fcntl(0, F_MAXFD);
ATF_REQUIRE(cur == __arraycount(buf) + STDERR_FILENO);
half = STDERR_FILENO + __arraycount(buf) / 2;
ATF_REQUIRE(closefrom(half) == 0);
cur = fcntl(0, F_MAXFD);
ATF_REQUIRE(cur == half - 1);
for (i = 0; i < __arraycount(buf); i++)
(void)close(buf[i]);
}
ATF_TC_CLEANUP(closefrom_buffer, tc)
{
(void)unlink(path);
}
ATF_TC(closefrom_err);
ATF_TC_HEAD(closefrom_err, tc)
{
atf_tc_set_md_var(tc, "descr", "Test errors from closefrom(3)");
}
ATF_TC_BODY(closefrom_err, tc)
{
errno = 0;
ATF_REQUIRE_ERRNO(EBADF, closefrom(-INT_MAX) == -1);
}
ATF_TC(closefrom_one);
ATF_TC_HEAD(closefrom_one, tc)
{
atf_tc_set_md_var(tc, "descr", "Test closefrom(1)");
}
ATF_TC_BODY(closefrom_one, tc)
{
pid_t pid;
int sta;
pid = fork();
ATF_REQUIRE(pid >= 0);
if (pid == 0) {
if (closefrom(1) != 0)
_exit(10);
_exit(fcntl(0, F_MAXFD));
}
(void)wait(&sta);
/*
* STDIN_FILENO sould still be open; WEXITSTATUS(1) == 0.
*/
if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != 0)
atf_tc_fail("not all descriptors were closed");
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, closefrom_basic);
ATF_TP_ADD_TC(tp, closefrom_buffer);
ATF_TP_ADD_TC(tp, closefrom_err);
ATF_TP_ADD_TC(tp, closefrom_one);
return atf_no_error();
}