1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3
 4 * Copyright (C) 2015 Thomas Meyer (thomas@m3y3r.de)
 5 * Copyright (C) 2005 Jeff Dike (jdike@karaya.com)
 6 */
 7
 8#ifndef __STUB_DATA_H
 9#define __STUB_DATA_H
10
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
11struct stub_data {
12	unsigned long offset;
13	int fd;
14	long parent_err, child_err;
 
 
 
 
 
 
15};
16
17#endif

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3
 4 * Copyright (C) 2015 Thomas Meyer (thomas@m3y3r.de)
 5 * Copyright (C) 2005 Jeff Dike (jdike@karaya.com)
 6 */
 7
 8#ifndef __STUB_DATA_H
 9#define __STUB_DATA_H
10
11#include <linux/compiler_types.h>
12#include <as-layout.h>
13#include <sysdep/tls.h>
14
15struct stub_init_data {
16	unsigned long stub_start;
17
18	int stub_code_fd;
19	unsigned long stub_code_offset;
20	int stub_data_fd;
21	unsigned long stub_data_offset;
22
23	unsigned long segv_handler;
24};
25
26#define STUB_NEXT_SYSCALL(s) \
27	((struct stub_syscall *) (((unsigned long) s) + (s)->cmd_len))
28
29enum stub_syscall_type {
30	STUB_SYSCALL_UNSET = 0,
31	STUB_SYSCALL_MMAP,
32	STUB_SYSCALL_MUNMAP,
33};
34
35struct stub_syscall {
36	struct {
37		unsigned long addr;
38		unsigned long length;
39		unsigned long offset;
40		int fd;
41		int prot;
42	} mem;
43
44	enum stub_syscall_type syscall;
45};
46
47struct stub_data {
48	unsigned long offset;
49	long err, child_err;
50
51	int syscall_data_len;
52	/* 128 leaves enough room for additional fields in the struct */
53	struct stub_syscall syscall_data[(UM_KERN_PAGE_SIZE - 128) / sizeof(struct stub_syscall)] __aligned(16);
54
55	/* Stack for our signal handlers and for calling into . */
56	unsigned char sigstack[UM_KERN_PAGE_SIZE] __aligned(UM_KERN_PAGE_SIZE);
57};
58
59#endif