1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/*
* utrace compatibility defines and inlines
* Copyright (C) 2008-2009 Red Hat Inc.
*
* This file is part of systemtap, and is free software. You can
* redistribute it and/or modify it under the terms of the GNU General
* Public License (GPL); either version 2, or (at your option) any
* later version.
*/
#ifndef _UTRACE_COMPATIBILITY_H_
#define _UTRACE_COMPATIBILITY_H_
#include <linux/utrace.h>
/* PR9974: Adapt to struct renaming. */
#ifdef UTRACE_API_VERSION
#define utrace_attached_engine utrace_engine
#endif
#ifdef UTRACE_ACTION_RESUME
/*
* If UTRACE_ACTION_RESUME is defined after including utrace.h, we've
* got the original version of utrace. So that utrace clients can be
* written using the new interface (mostly), provide a (very thin)
* compatibility layer that hides the differences.
*/
#define UTRACE_ORIG_VERSION
enum utrace_resume_action {
UTRACE_STOP = UTRACE_ACTION_QUIESCE,
UTRACE_RESUME = UTRACE_ACTION_RESUME,
UTRACE_DETACH = UTRACE_ACTION_DETACH,
UTRACE_SINGLESTEP = UTRACE_ACTION_SINGLESTEP,
UTRACE_BLOCKSTEP = UTRACE_ACTION_BLOCKSTEP,
};
static inline struct utrace_attached_engine *
utrace_attach_task(struct task_struct *target, int flags,
const struct utrace_engine_ops *ops, void *data)
{
return utrace_attach(target, flags, ops, data);
}
static inline int __must_check
utrace_control(struct task_struct *target,
struct utrace_attached_engine *engine,
enum utrace_resume_action action)
{
switch (action) {
case UTRACE_DETACH:
return utrace_detach(target, engine);
case UTRACE_STOP:
return utrace_set_flags(target, engine,
(engine->flags | UTRACE_ACTION_QUIESCE));
case UTRACE_SINGLESTEP:
case UTRACE_BLOCKSTEP:
return utrace_set_flags(target, engine,
engine->flags | action);
default:
return -EINVAL;
}
}
static inline int __must_check
utrace_set_events(struct task_struct *target,
struct utrace_attached_engine *engine,
unsigned long eventmask)
{
return utrace_set_flags(target, engine, eventmask);
}
static inline void
utrace_engine_put(struct utrace_attached_engine *engine)
{
return;
}
static inline int __must_check
utrace_barrier(struct task_struct *target,
struct utrace_attached_engine *engine)
{
return 0;
}
#else
#ifdef UTRACE_HIDE_EVENT
/* This is only for some fedora 9 2.6.26 kernels that don't have
* UTRACE_ACTION_RESUME defined, but do define UTRACE_HIDE_EVENT.
* It isn't really a recommended version, but it does compile and
* run mostly. It has one renamed function.
*/
#define utrace_attach_task utrace_attach
static inline void
utrace_engine_put(struct utrace_attached_engine *engine)
{
return;
}
static inline int __must_check
utrace_barrier(struct task_struct *target,
struct utrace_attached_engine *engine)
{
return 0;
}
#endif /* UTRACE_HIDE_EVENT */
#endif /* UTRACE_ACTION_RESUME */
#endif /* _UTRACE_COMPATIBILITY_H_ */
|
