/*
 * Check decoding of out-of-range syscalls.
 *
 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
 * Copyright (c) 2016-2019 The strace developers.
 * All rights reserved.
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

#include "tests.h"
#include "sysent.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "scno.h"

#include "sysent_shorthand_defs.h"

static const struct_sysent syscallent[] = {
#include "syscallent.h"
};

#include "sysent_shorthand_undefs.h"

#ifndef DEBUG_PRINT
# define DEBUG_PRINT 0
#endif

#if defined __X32_SYSCALL_BIT && defined __NR_read \
 && (__X32_SYSCALL_BIT & __NR_read) != 0
# define SYSCALL_BIT __X32_SYSCALL_BIT
#else
# define SYSCALL_BIT 0
#endif

#if DEBUG_PRINT
static const char *strace_name;
static FILE *debug_out;
#endif

static void
test_syscall(const unsigned long nr)
{
	static const kernel_ulong_t a[] = {
		(kernel_ulong_t) 0xface0fedbadc0dedULL,
		(kernel_ulong_t) 0xface1fedbadc1dedULL,
		(kernel_ulong_t) 0xface2fedbadc2dedULL,
		(kernel_ulong_t) 0xface3fedbadc3dedULL,
		(kernel_ulong_t) 0xface4fedbadc4dedULL,
		(kernel_ulong_t) 0xface5fedbadc5dedULL
	};

	long rc = syscall(nr | SYSCALL_BIT,
			  a[0], a[1], a[2], a[3], a[4], a[5]);

#if DEBUG_PRINT
	fprintf(debug_out, "%s: pid %d invalid syscall %#lx\n",
		strace_name, getpid(), nr | SYSCALL_BIT);
#endif

#ifdef LINUX_MIPSO32
	printf("syscall(%#lx, %#lx, %#lx, %#lx, %#lx, %#lx, %#lx)"
	       " = %s\n", nr | SYSCALL_BIT,
	       a[0], a[1], a[2], a[3], a[4], a[5], sprintrc(rc));
#else
	printf("syscall_%#lx(%#llx, %#llx, %#llx, %#llx, %#llx, %#llx)"
	       " = %s\n", nr | SYSCALL_BIT,
	       (unsigned long long) a[0],
	       (unsigned long long) a[1],
	       (unsigned long long) a[2],
	       (unsigned long long) a[3],
	       (unsigned long long) a[4],
	       (unsigned long long) a[5],
	       sprintrc(rc));
#endif
}

int
main(int argc, char *argv[])
{
#if DEBUG_PRINT
	if (argc < 3)
		error_msg_and_fail("Not enough arguments. "
				   "Usage: %s STRACE_NAME DEBUG_OUT_FD",
				   argv[0]);

	strace_name = argv[1];

	errno = 0;
	int debug_out_fd = strtol(argv[2], NULL, 0);
	if (errno)
		error_msg_and_fail("Not a number: %s", argv[2]);

	debug_out = fdopen(debug_out_fd, "a");
	if (!debug_out)
		perror_msg_and_fail("fdopen: %d", debug_out_fd);
#endif

	test_syscall(ARRAY_SIZE(syscallent));
	(void) syscallent;	/* workaround for clang bug #33068 */

#ifdef SYS_socket_subcall
	test_syscall(SYS_socket_subcall + 1);
#endif

#ifdef SYS_ipc_subcall
	test_syscall(SYS_ipc_subcall + 1);
#endif

	puts("+++ exited with 0 +++");
	return 0;
}
