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/*
* Copyright (c) International Business Machines Corp., 200i1
* Copyright (c) 2018 Xiao Yang <yangx.jy@cn.fujitsu.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*/
/*
* DESCRIPTION
* 1) Call sysctl(2) with nlen set to 0, and expect ENOTDIR.
* 2) Call sysctl(2) with nlen greater than CTL_MAXNAME, and expect ENOTDIR.
* 3) Call sysctl(2) with the address of oldname outside the address space of
* the process, and expect EFAULT.
* 4) Call sysctl(2) with the address of soldval outside the address space of
* the process, and expect EFAULT.
*/
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <linux/unistd.h>
#include <linux/sysctl.h>
#include "tst_test.h"
#include "lapi/syscalls.h"
static char osname[BUFSIZ];
static size_t length = BUFSIZ;
static struct tcase {
int name[2];
int nlen;
void *oldval;
size_t *oldlen;
int exp_err;
} tcases[] = {
{{CTL_KERN, KERN_OSREV}, 0, osname, &length, ENOTDIR},
{{CTL_KERN, KERN_OSREV}, CTL_MAXNAME + 1, osname, &length, ENOTDIR},
{{CTL_KERN, KERN_OSRELEASE}, 2, (void *) -1, &length, EFAULT},
{{CTL_KERN, KERN_VERSION}, 2, osname, (void *) -1, EFAULT},
};
static void verify_sysctl(unsigned int n)
{
struct tcase *tc = &tcases[n];
struct __sysctl_args args = {
.name = tc->name,
.nlen = tc->nlen,
.oldval = tc->oldval,
.oldlenp = tc->oldlen,
};
TEST(tst_syscall(__NR__sysctl, &args));
if (TEST_RETURN != -1) {
tst_res(TFAIL, "sysctl(2) succeeded unexpectedly");
return;
}
if (TEST_ERRNO == tc->exp_err) {
tst_res(TPASS | TTERRNO, "Got expected error");
} else {
tst_res(TFAIL | TTERRNO, "Got unexpected error, expected %s",
tst_strerrno(tc->exp_err));
}
}
static struct tst_test test = {
.tcnt = ARRAY_SIZE(tcases),
.test = verify_sysctl,
};
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