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/* $NetBSD: t_getcontext.c,v 1.3 2011/07/14 04:59:14 jruoho Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* 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>
__COPYRIGHT("@(#) Copyright (c) 2008\
The NetBSD Foundation, inc. All rights reserved.");
__RCSID("$NetBSD: t_getcontext.c,v 1.3 2011/07/14 04:59:14 jruoho Exp $");
#include <atf-c.h>
#include <errno.h>
#include <stdarg.h>
#include <stdlib.h>
#include <ucontext.h>
#define STACKSZ (10*1024)
#define DEPTH 3
static int calls;
static void
run(int n, ...)
{
va_list va;
int i, ia;
ATF_REQUIRE_EQ(n, DEPTH - calls - 1);
va_start(va, n);
for (i = 0; i < 9; i++) {
ia = va_arg(va, int);
ATF_REQUIRE_EQ(i, ia);
}
va_end(va);
calls++;
}
ATF_TC(getcontext_err);
ATF_TC_HEAD(getcontext_err, tc)
{
atf_tc_set_md_var(tc, "descr", "Test errors from getcontext(2)");
}
ATF_TC_BODY(getcontext_err, tc)
{
errno = 0;
ATF_REQUIRE_ERRNO(EFAULT, getcontext((void *)-1) == -1);
}
ATF_TC(setcontext_err);
ATF_TC_HEAD(setcontext_err, tc)
{
atf_tc_set_md_var(tc, "descr", "Test errors from setcontext(2)");
}
ATF_TC_BODY(setcontext_err, tc)
{
errno = 0;
ATF_REQUIRE_ERRNO(EFAULT, setcontext((void *)-1) == -1);
}
ATF_TC(setcontext_link);
ATF_TC_HEAD(setcontext_link, tc)
{
atf_tc_set_md_var(tc, "descr",
"Checks get/make/setcontext(), context linking via uc_link(), "
"and argument passing to the new context");
}
ATF_TC_BODY(setcontext_link, tc)
{
ucontext_t uc[DEPTH];
ucontext_t save;
volatile int i = 0; /* avoid longjmp clobbering */
for (i = 0; i < DEPTH; ++i) {
ATF_REQUIRE_EQ(getcontext(&uc[i]), 0);
uc[i].uc_stack.ss_sp = malloc(STACKSZ);
uc[i].uc_stack.ss_size = STACKSZ;
uc[i].uc_link = (i > 0) ? &uc[i - 1] : &save;
makecontext(&uc[i], (void *)run, 10, i,
0, 1, 2, 3, 4, 5, 6, 7, 8);
}
ATF_REQUIRE_EQ(getcontext(&save), 0);
if (calls == 0)
ATF_REQUIRE_EQ(setcontext(&uc[DEPTH-1]), 0);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, getcontext_err);
ATF_TP_ADD_TC(tp, setcontext_err);
ATF_TP_ADD_TC(tp, setcontext_link);
return atf_no_error();
}
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