tests/nsyscalls.c - master - githubmirror/strace

tests/nsyscalls.c
89 строк2 KB
Dmitry V. Levin
Update copyright headers
15 июн 2026, 11:00
15 июн 2026, 11:00726d2e4
/*
 * Check decoding of out-of-range syscalls.
 *
 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@strace.io>
 * Copyright (c) 2016-2026 The strace developers.
 * All rights reserved.
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

#include "nsyscalls.h"

#ifndef DEBUG_PRINT
# define DEBUG_PRINT 0
#endif

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

static void
test_syscall(const unsigned long nr)
{
	long rc = invoke_syscall(nr);

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