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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
# timer_create _______________________________________________
#
# long sys_timer_create(clockid_t which_clock,
# struct sigevent __user *timer_event_spec,
# timer_t __user * created_timer_id)
# long compat_sys_timer_create(clockid_t which_clock,
# struct sigevent __user *timer_event_spec,
# timer_t __user * created_timer_id)
#
@define _SYSCALL_TIMER_CREATE_NAME
%(
name = "timer_create"
%)
@define _SYSCALL_TIMER_CREATE_ARGSTR
%(
argstr = sprintf("%s, %p, %p", clockid_str, evp_uaddr, timerid_uaddr)
%)
@define _SYSCALL_TIMER_CREATE_REGARGS
%(
clockid = int_arg(1)
clockid_str = _get_wc_str(clockid)
evp_uaddr = pointer_arg(2)
timerid_uaddr = pointer_arg(3)
%)
probe syscall.timer_create = dw_syscall.timer_create !, nd_syscall.timer_create ? {}
probe syscall.timer_create.return = dw_syscall.timer_create.return !,
nd_syscall.timer_create.return ? {}
# dw_timer_create _____________________________________________________
probe dw_syscall.timer_create = __syscall.timer_create,
kernel.function("compat_sys_timer_create").call ?
{
@_SYSCALL_TIMER_CREATE_NAME
clockid = __int32($which_clock)
clockid_str = _get_wc_str(__int32($which_clock))
evp_uaddr = @__pointer($timer_event_spec)
timerid_uaddr = @__pointer($created_timer_id)
@_SYSCALL_TIMER_CREATE_ARGSTR
}
probe __syscall.timer_create = kernel.function("sys_timer_create").call
{
@__syscall_gate(@const("__NR_timer_create"))
}
probe dw_syscall.timer_create.return =
__syscall.timer_create.return,
kernel.function("compat_sys_timer_create").return ?
{
@_SYSCALL_TIMER_CREATE_NAME
@SYSC_RETVALSTR($return)
}
probe __syscall.timer_create.return = kernel.function("sys_timer_create").return
{
@__syscall_gate(@const("__NR_timer_create"))
}
# nd_timer_create _____________________________________________________
probe nd_syscall.timer_create = nd1_syscall.timer_create!, nd2_syscall.timer_create!, tp_syscall.timer_create
{ }
probe nd1_syscall.timer_create = __nd1_syscall.timer_create,
__nd1_syscall.compat_timer_create ?
{
@_SYSCALL_TIMER_CREATE_NAME
}
probe __nd1_syscall.timer_create = kprobe.function("sys_timer_create")
{
@__syscall_gate(@const("__NR_timer_create"))
asmlinkage()
@_SYSCALL_TIMER_CREATE_REGARGS
@_SYSCALL_TIMER_CREATE_ARGSTR
}
probe __nd1_syscall.compat_timer_create = kprobe.function("compat_sys_timer_create") ?
{
asmlinkage()
@_SYSCALL_TIMER_CREATE_REGARGS
@_SYSCALL_TIMER_CREATE_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.timer_create = __nd2_syscall.timer_create,
__nd2_syscall.compat_timer_create ?
{
@_SYSCALL_TIMER_CREATE_NAME
}
probe __nd2_syscall.timer_create =
kprobe.function(@arch_syscall_prefix "sys_timer_create") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_TIMER_CREATE_REGARGS
@_SYSCALL_TIMER_CREATE_ARGSTR
}
probe __nd2_syscall.compat_timer_create =
kprobe.function(@arch_syscall_prefix "compat_sys_timer_create") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_TIMER_CREATE_REGARGS
@_SYSCALL_TIMER_CREATE_ARGSTR
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.timer_create = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_timer_create"), @const("__NR_compat_timer_create"))
@_SYSCALL_TIMER_CREATE_NAME
@_SYSCALL_TIMER_CREATE_REGARGS
@_SYSCALL_TIMER_CREATE_ARGSTR
}
probe nd_syscall.timer_create.return = nd1_syscall.timer_create.return!, nd2_syscall.timer_create.return!, tp_syscall.timer_create.return
{ }
probe nd1_syscall.timer_create.return =
__nd1_syscall.timer_create.return,
kprobe.function("compat_sys_timer_create").return ?
{
@_SYSCALL_TIMER_CREATE_NAME
@SYSC_RETVALSTR(returnval())
}
probe __nd1_syscall.timer_create.return = kprobe.function("sys_timer_create").return
{
@__syscall_gate(@const("__NR_timer_create"))
}
/* kernel 4.17+ */
probe nd2_syscall.timer_create.return =
kprobe.function(@arch_syscall_prefix "sys_timer_create").return,
kprobe.function(@arch_syscall_prefix "compat_sys_timer_create").return ?
{
@_SYSCALL_TIMER_CREATE_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.timer_create.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_timer_create"), @const("__NR_compat_timer_create"))
@_SYSCALL_TIMER_CREATE_NAME
@SYSC_RETVALSTR($ret)
}
|
