70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) International Business Machines Corp., 200i1
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* Copyright (c) 2018 Xiao Yang <yangx.jy@cn.fujitsu.com>
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*/
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/*
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* DESCRIPTION
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* 1) Call sysctl(2) with nlen set to 0, and expect ENOTDIR.
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* 2) Call sysctl(2) with nlen greater than CTL_MAXNAME, and expect ENOTDIR.
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* 3) Call sysctl(2) with the address of oldname outside the address space of
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* the process, and expect EFAULT.
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* 4) Call sysctl(2) with the address of soldval outside the address space of
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* the process, and expect EFAULT.
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <unistd.h>
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#include <linux/unistd.h>
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#include <linux/sysctl.h>
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#include "tst_test.h"
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#include "lapi/syscalls.h"
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static char osname[BUFSIZ];
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static size_t length = BUFSIZ;
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static struct tcase {
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int name[2];
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int nlen;
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void *oldval;
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size_t *oldlen;
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int exp_err;
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} tcases[] = {
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{{CTL_KERN, KERN_OSREV}, 0, osname, &length, ENOTDIR},
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{{CTL_KERN, KERN_OSREV}, CTL_MAXNAME + 1, osname, &length, ENOTDIR},
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{{CTL_KERN, KERN_OSRELEASE}, 2, (void *) -1, &length, EFAULT},
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{{CTL_KERN, KERN_VERSION}, 2, osname, (void *) -1, EFAULT},
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};
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static void verify_sysctl(unsigned int n)
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{
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struct tcase *tc = &tcases[n];
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struct __sysctl_args args = {
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.name = tc->name,
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.nlen = tc->nlen,
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.oldval = tc->oldval,
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.oldlenp = tc->oldlen,
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};
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TEST(tst_syscall(__NR__sysctl, &args));
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if (TST_RET != -1) {
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tst_res(TFAIL, "sysctl(2) succeeded unexpectedly");
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return;
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}
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if (TST_ERR == tc->exp_err) {
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tst_res(TPASS | TTERRNO, "Got expected error");
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} else {
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tst_res(TFAIL | TTERRNO, "Got unexpected error, expected %s",
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tst_strerrno(tc->exp_err));
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}
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}
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static struct tst_test test = {
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.tcnt = ARRAY_SIZE(tcases),
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.test = verify_sysctl,
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};
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