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
|
# mlockall ___________________________________________________
# long sys_mlockall(int flags)
#
@define _SYSCALL_MLOCKALL_NAME
%(
name = "mlockall"
%)
@define _SYSCALL_MLOCKALL_ARGSTR
%(
argstr = flags_str
%)
@define _SYSCALL_MLOCKALL_REGARGS
%(
flags = int_arg(1)
flags_str = _mlockall_flags_str(flags)
%)
@define _SYSCALL_MLOCKALL_REGARGS_STORE
%(
if (@probewrite(flags))
set_int_arg(1, flags)
%)
probe syscall.mlockall = dw_syscall.mlockall !, nd_syscall.mlockall ? {}
probe syscall.mlockall.return = dw_syscall.mlockall.return !,
nd_syscall.mlockall.return ? {}
# dw_mlockall _____________________________________________________
probe dw_syscall.mlockall = kernel.function("sys_mlockall").call ?
{
@_SYSCALL_MLOCKALL_NAME
flags = __int32($flags)
flags_str = _mlockall_flags_str(flags)
@_SYSCALL_MLOCKALL_ARGSTR
}
probe dw_syscall.mlockall.return = kernel.function("sys_mlockall").return ?
{
@_SYSCALL_MLOCKALL_NAME
@SYSC_RETVALSTR($return)
}
# nd_mlockall _____________________________________________________
probe nd_syscall.mlockall = nd1_syscall.mlockall!, nd2_syscall.mlockall!, tp_syscall.mlockall
{ }
probe nd1_syscall.mlockall = kprobe.function("sys_mlockall") ?
{
@_SYSCALL_MLOCKALL_NAME
asmlinkage()
@_SYSCALL_MLOCKALL_REGARGS
@_SYSCALL_MLOCKALL_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.mlockall = kprobe.function(@arch_syscall_prefix "sys_mlockall") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_MLOCKALL_NAME
@_SYSCALL_MLOCKALL_REGARGS
@_SYSCALL_MLOCKALL_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_MLOCKALL_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.mlockall = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_mlockall"), @const("__NR_compat_mlockall"))
@_SYSCALL_MLOCKALL_NAME
@_SYSCALL_MLOCKALL_REGARGS
@_SYSCALL_MLOCKALL_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_MLOCKALL_REGARGS_STORE %)
}
probe nd_syscall.mlockall.return = nd1_syscall.mlockall.return!, nd2_syscall.mlockall.return!, tp_syscall.mlockall.return
{ }
probe nd1_syscall.mlockall.return = kprobe.function("sys_mlockall").return ?
{
@_SYSCALL_MLOCKALL_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.mlockall.return = kprobe.function(@arch_syscall_prefix "sys_mlockall").return ?
{
@_SYSCALL_MLOCKALL_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.mlockall.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_mlockall"), @const("__NR_compat_mlockall"))
@_SYSCALL_MLOCKALL_NAME
@SYSC_RETVALSTR($ret)
}
|
