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
|
# timerfd_gettime_____________________________________________
#
# SYSCALL_DEFINE2(timerfd_gettime, int, ufd, struct itimerspec __user *, otmr)
# COMPAT_SYSCALL_DEFINE2(timerfd_gettime, int, ufd,
# struct compat_itimerspec __user *, otmr)
@define _SYSCALL_TIMERFD_GETTIME_NAME
%(
name = "timerfd_gettime"
%)
@define _SYSCALL_TIMERFD_GETTIME_ARGSTR
%(
argstr = sprintf("%d, %p", fd, value_uaddr)
%)
@define _SYSCALL_TIMERFD_GETTIME_REGARGS
%(
fd = int_arg(1)
value_uaddr = pointer_arg(2)
%)
@define _SYSCALL_TIMERFD_GETTIME_REGARGS_STORE
%(
if (@probewrite(fd))
set_int_arg(1, fd)
if (@probewrite(value_uaddr))
set_pointer_arg(2, value_uaddr)
%)
probe syscall.timerfd_gettime = dw_syscall.timerfd_gettime !,
nd_syscall.timerfd_gettime ? {}
probe syscall.timerfd_gettime.return = dw_syscall.timerfd_gettime.return !,
nd_syscall.timerfd_gettime.return ? {}
# dw_timerfd_gettime _____________________________________________________
probe dw_syscall.timerfd_gettime = __syscall.timerfd_gettime ?,
kernel.function("compat_sys_timerfd_gettime").call ?
{
@_SYSCALL_TIMERFD_GETTIME_NAME
fd = __int32($ufd)
value_uaddr = @__pointer($otmr)
@_SYSCALL_TIMERFD_GETTIME_ARGSTR
}
probe __syscall.timerfd_gettime = kernel.function("sys_timerfd_gettime").call ?
{
@__syscall_gate_compat_simple
}
probe dw_syscall.timerfd_gettime.return = __syscall.timerfd_gettime.return ?,
kernel.function("compat_sys_timerfd_gettime").return ?
{
@_SYSCALL_TIMERFD_GETTIME_NAME
@SYSC_RETVALSTR($return)
}
probe __syscall.timerfd_gettime.return =
kernel.function("sys_timerfd_gettime").return ?
{
@__syscall_gate_compat_simple
}
# nd_timerfd_gettime _____________________________________________________
probe nd_syscall.timerfd_gettime = nd1_syscall.timerfd_gettime!, nd2_syscall.timerfd_gettime!, tp_syscall.timerfd_gettime
{ }
probe nd1_syscall.timerfd_gettime = __nd1_syscall.timerfd_gettime ?,
kprobe.function("compat_sys_timerfd_gettime").call ?
{
@_SYSCALL_TIMERFD_GETTIME_NAME
asmlinkage()
@_SYSCALL_TIMERFD_GETTIME_REGARGS
@_SYSCALL_TIMERFD_GETTIME_ARGSTR
}
probe __nd1_syscall.timerfd_gettime =
kprobe.function("sys_timerfd_gettime").call ?
{
@__syscall_gate_compat_simple
}
/* kernel 4.17+ */
probe nd2_syscall.timerfd_gettime =
kprobe.function(@arch_syscall_prefix "sys_timerfd_gettime") ?,
kprobe.function(@arch_syscall_prefix "compat_sys_timerfd_gettime") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_TIMERFD_GETTIME_NAME
@_SYSCALL_TIMERFD_GETTIME_REGARGS
@_SYSCALL_TIMERFD_GETTIME_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_TIMERFD_GETTIME_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.timerfd_gettime = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_timerfd_gettime"), @const("__NR_compat_timerfd_gettime"))
@_SYSCALL_TIMERFD_GETTIME_NAME
@_SYSCALL_TIMERFD_GETTIME_REGARGS
@_SYSCALL_TIMERFD_GETTIME_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_TIMERFD_GETTIME_REGARGS_STORE %)
}
probe nd_syscall.timerfd_gettime.return = nd1_syscall.timerfd_gettime.return!, nd2_syscall.timerfd_gettime.return!, tp_syscall.timerfd_gettime.return
{ }
probe nd1_syscall.timerfd_gettime.return = __nd1_syscall.timerfd_gettime.return ?,
kprobe.function("compat_sys_timerfd_gettime").return ?
{
@_SYSCALL_TIMERFD_GETTIME_NAME
@SYSC_RETVALSTR(returnval())
}
probe __nd1_syscall.timerfd_gettime.return =
kprobe.function("sys_timerfd_gettime").return ?
{
@__syscall_gate_compat_simple
}
/* kernel 4.17+ */
probe nd2_syscall.timerfd_gettime.return =
kprobe.function(@arch_syscall_prefix "sys_timerfd_gettime").return ?,
kprobe.function(@arch_syscall_prefix "compat_sys_timerfd_gettime").return ?
{
@_SYSCALL_TIMERFD_GETTIME_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.timerfd_gettime.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_timerfd_gettime"), @const("__NR_compat_timerfd_gettime"))
@_SYSCALL_TIMERFD_GETTIME_NAME
@SYSC_RETVALSTR($ret)
}
|
