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/*
* Check decoding of sysctl syscall.
*
* Copyright (c) 2022 Dmitry V. Levin <ldv@strace.io>
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#ifdef __NR__sysctl
# include <stdio.h>
# include <string.h>
# include <unistd.h>
# include <linux/sysctl.h>
static const char *errstr;
static long
k_sysctl(const void *const args)
{
const kernel_ulong_t bad = (kernel_ulong_t) 0xbadc0dedbadc0dedULL;
const long rc = syscall(__NR__sysctl, (uintptr_t) args,
bad, bad, bad, bad, bad);
errstr = sprintrc(rc);
return rc;
}
int
main(void)
{
TAIL_ALLOC_OBJECT_CONST_PTR(struct __sysctl_args, args);
void *const efault = args + 1;
k_sysctl(efault);
printf("_sysctl(%p) = %s\n", efault, errstr);
memset(args, 0, sizeof(*args));
k_sysctl(args);
printf("_sysctl({name=NULL, nlen=0, oldval=NULL, oldlenp=NULL"
", newval=NULL, newlen=0}) = %s\n", errstr);
fill_memory_ex(args, sizeof(*args), 'a', 'z' - 'a' + 1);
args->name = efault;
k_sysctl(args);
printf("_sysctl({name=%p, nlen=%d, oldval=%p, oldlenp=%p"
", newval=%p, newlen=%llu}) = %s\n",
args->name, args->nlen, args->oldval, args->oldlenp,
args->newval, (unsigned long long) args->newlen, errstr);
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR__sysctl")
#endif
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