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/*
* Invoke a socket syscall, either directly or via __NR_socketcall.
*
* Copyright (c) 2016-2018 Dmitry V. Levin <ldv@altlinux.org>
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <errno.h>
#include <unistd.h>
#include <asm/unistd.h>
/*
* Invoke a socket syscall, either directly or via __NR_socketcall.
* if nr == -1, no direct syscall invocation will be made.
*/
int
socketcall(const int nr, const int call,
long a1, long a2, long a3, long a4, long a5)
{
int rc = -1;
errno = ENOSYS;
# ifdef __NR_socketcall
static int have_socketcall = -1;
if (have_socketcall < 0) {
if (syscall(__NR_socketcall, 0L, 0L, 0L, 0L, 0L) < 0
&& EINVAL == errno) {
have_socketcall = 1;
} else {
have_socketcall = 0;
}
}
if (have_socketcall) {
const long args[] = { a1, a2, a3, a4, a5 };
rc = syscall(__NR_socketcall, call, args);
} else
# endif
{
if (nr != -1)
rc = syscall(nr, a1, a2, a3, a4, a5);
}
return rc;
}
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