diff options
Diffstat (limited to 'tests/sys/kern/kern_copyin.c')
| -rw-r--r-- | tests/sys/kern/kern_copyin.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/tests/sys/kern/kern_copyin.c b/tests/sys/kern/kern_copyin.c new file mode 100644 index 000000000000..a8cf0422eec5 --- /dev/null +++ b/tests/sys/kern/kern_copyin.c @@ -0,0 +1,96 @@ +/*- + * Copyright (c) 2015 The FreeBSD Foundation + * All rights reserved. + * + * This software was developed by Konstantin Belousov <kib@FreeBSD.org> + * under sponsorship from the FreeBSD Foundation. + * + * 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 AUTHOR 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 AUTHOR 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> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <errno.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <atf-c.h> +#include <vm/vm.h> +#include <vm/pmap.h> +#include <machine/vmparam.h> + +static int scratch_file; + +static int +copyin_checker(uintptr_t uaddr, size_t len) +{ + ssize_t ret; + + ret = write(scratch_file, (const void *)uaddr, len); + return (ret == -1 ? errno : 0); +} + +#define FMAX ULONG_MAX + +ATF_TC_WITHOUT_HEAD(kern_copyin); +ATF_TC_BODY(kern_copyin, tc) +{ + char template[] = "copyin.XXXXXX"; + +#ifdef __mips__ + /* + * MIPS has different VM layout: the UVA map on mips ends the + * highest mapped entry at the VM_MAXUSER_ADDRESS - PAGE_SIZE, + * while all other arches map either stack or shared page up + * to the VM_MAXUSER_ADDRESS. + */ + atf_tc_skip("Platform is not supported."); +#endif + + scratch_file = mkstemp(template); + ATF_REQUIRE(scratch_file != -1); + unlink(template); + + ATF_CHECK(copyin_checker(0, 0) == 0); + ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 9) == 0); + ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 10) == 0); + ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 11) == EFAULT); + ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 1, 1) == 0); + ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 0) == 0); + ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 1) == EFAULT); + ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 2) == EFAULT); + ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS + 1, 0) == 0); + ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS + 1, 2) == EFAULT); + ATF_CHECK(copyin_checker(FMAX - 10, 9) == EFAULT); + ATF_CHECK(copyin_checker(FMAX - 10, 10) == EFAULT); + ATF_CHECK(copyin_checker(FMAX - 10, 11) == EFAULT); +} + +ATF_TP_ADD_TCS(tp) +{ + + ATF_TP_ADD_TC(tp, kern_copyin); + return (atf_no_error()); +} |