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
|
# getresuid __________________________________________________
# long sys_getresuid(uid_t __user *ruid,
# uid_t __user *euid,
# uid_t __user *suid)
@define _SYSCALL_GETRESUID_NAME
%(
name = "getresuid"
%)
@define _SYSCALL_GETRESUID_ARGSTR
%(
argstr = sprintf("%p, %p, %p", ruid_uaddr, euid_uaddr, suid_uaddr)
%)
@define _SYSCALL_GETRESUID_REGARGS
%(
ruid_uaddr = pointer_arg(1)
euid_uaddr = pointer_arg(2)
suid_uaddr = pointer_arg(3)
%)
probe syscall.getresuid = dw_syscall.getresuid !, nd_syscall.getresuid ? {}
probe syscall.getresuid.return = dw_syscall.getresuid.return !, nd_syscall.getresuid.return ? {}
# dw_getresuid _____________________________________________________
probe dw_syscall.getresuid = kernel.function("sys_getresuid16").call ?,
kernel.function("sys_getresuid").call
{
@_SYSCALL_GETRESUID_NAME
ruid_uaddr = @choose_defined($ruidp, $ruid)
euid_uaddr = @choose_defined($euidp, $euid)
suid_uaddr = @choose_defined($suidp, $suid)
@_SYSCALL_GETRESUID_ARGSTR
}
probe dw_syscall.getresuid.return = kernel.function("sys_getresuid16").return ?,
kernel.function("sys_getresuid").return
{
@_SYSCALL_GETRESUID_NAME
@SYSC_RETVALSTR($return)
}
# nd_getresuid _____________________________________________________
probe nd_syscall.getresuid = nd1_syscall.getresuid!, nd2_syscall.getresuid!, tp_syscall.getresuid
{ }
probe nd1_syscall.getresuid = kprobe.function("sys_getresuid16") ?,
kprobe.function("sys_getresuid") ?
{
@_SYSCALL_GETRESUID_NAME
asmlinkage()
@_SYSCALL_GETRESUID_REGARGS
@_SYSCALL_GETRESUID_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.getresuid = kprobe.function(@arch_syscall_prefix "sys_getresuid") ?,
kprobe.function(@arch_syscall_prefix "sys_getresuid16") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_GETRESUID_NAME
@_SYSCALL_GETRESUID_REGARGS
@_SYSCALL_GETRESUID_ARGSTR
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.getresuid = __tp_syscall.getresuid, __tp_syscall.getresuid16
{
__set_syscall_pt_regs($regs)
@_SYSCALL_GETRESUID_NAME
@_SYSCALL_GETRESUID_REGARGS
@_SYSCALL_GETRESUID_ARGSTR
}
probe __tp_syscall.getresuid = kernel.trace("sys_enter")
{
@__syscall_compat_gate(@const("__NR_getresuid"), @const("__NR_compat_getresuid32"))
}
probe __tp_syscall.getresuid16 = kernel.trace("sys_enter")
{
@__compat_syscall_gate(@const("__NR_compat_getresuid"))
}
probe nd_syscall.getresuid.return = nd1_syscall.getresuid.return!, nd2_syscall.getresuid.return!, tp_syscall.getresuid.return
{ }
probe nd1_syscall.getresuid.return = kprobe.function("sys_getresuid16").return ?,
kprobe.function("sys_getresuid").return ?
{
@_SYSCALL_GETRESUID_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.getresuid.return =
kprobe.function(@arch_syscall_prefix "sys_getresuid").return ?,
kprobe.function(@arch_syscall_prefix "sys_getresuid16").return ?
{
@_SYSCALL_GETRESUID_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.getresuid.return = __tp_syscall.getresuid.return, __tp_syscall.getresuid16.return
{
__set_syscall_pt_regs($regs)
@_SYSCALL_GETRESUID_NAME
@SYSC_RETVALSTR($ret)
}
probe __tp_syscall.getresuid.return = kernel.trace("sys_exit")
{
@__syscall_compat_gate(@const("__NR_getresuid"), @const("__NR_compat_getresuid32"))
}
probe __tp_syscall.getresuid16.return = kernel.trace("sys_exit")
{
@__compat_syscall_gate(@const("__NR_compat_getresuid"))
}
|
