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
|
# sched_getattr ______________________________________________
#
# SYSCALL_DEFINE4(sched_getattr, pid_t, pid, struct sched_attr __user *, uattr,
# unsigned int, size, unsigned int, flags)
#
@define _SYSCALL_SCHED_GETATTR_NAME
%(
name = "sched_getattr"
%)
@define _SYSCALL_SCHED_GETATTR_ARGSTR
%(
argstr = sprintf("%d, %s, %u, %u", pid, sched_attr_str, size, flags)
%)
@define _SYSCALL_SCHED_GETATTR_REGARGS
%(
pid = int_arg(1)
sched_attr_uaddr = pointer_arg(2)
sched_attr_str = _struct_sched_attr_u(sched_attr_uaddr)
size = uint_arg(3)
flags = uint_arg(4)
%)
probe syscall.sched_getattr = dw_syscall.sched_getattr !, nd_syscall.sched_getattr ? {}
probe syscall.sched_getattr.return = dw_syscall.sched_getattr.return !,
nd_syscall.sched_getattr.return ? {}
# dw_sched_getattr _____________________________________________________
probe dw_syscall.sched_getattr = kernel.function("sys_sched_getattr") ?
{
@_SYSCALL_SCHED_GETATTR_NAME
pid = __int32($pid)
sched_attr_uaddr = $uattr
sched_attr_str = _struct_sched_attr_u(sched_attr_uaddr)
size = __uint32($size)
flags = __uint32($flags)
@_SYSCALL_SCHED_GETATTR_ARGSTR
}
probe dw_syscall.sched_getattr.return =
kernel.function("sys_sched_getattr").return ?
{
@_SYSCALL_SCHED_GETATTR_NAME
@SYSC_RETVALSTR($return)
}
# nd_sched_getattr _____________________________________________________
probe nd_syscall.sched_getattr = nd1_syscall.sched_getattr!, nd2_syscall.sched_getattr!, tp_syscall.sched_getattr
{ }
probe nd1_syscall.sched_getattr = kprobe.function("sys_sched_getattr") ?
{
@_SYSCALL_SCHED_GETATTR_NAME
asmlinkage()
@_SYSCALL_SCHED_GETATTR_REGARGS
@_SYSCALL_SCHED_GETATTR_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.sched_getattr = kprobe.function(@arch_syscall_prefix "sys_sched_getattr") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_SCHED_GETATTR_NAME
@_SYSCALL_SCHED_GETATTR_REGARGS
@_SYSCALL_SCHED_GETATTR_ARGSTR
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.sched_getattr = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_sched_getattr"), @const("__NR_compat_sched_getattr"))
@_SYSCALL_SCHED_GETATTR_NAME
@_SYSCALL_SCHED_GETATTR_REGARGS
@_SYSCALL_SCHED_GETATTR_ARGSTR
}
probe nd_syscall.sched_getattr.return = nd1_syscall.sched_getattr.return!, nd2_syscall.sched_getattr.return!, tp_syscall.sched_getattr.return
{ }
probe nd1_syscall.sched_getattr.return =
kprobe.function("sys_sched_getattr").return ?
{
@_SYSCALL_SCHED_GETATTR_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.sched_getattr.return = kprobe.function(@arch_syscall_prefix "sys_sched_getattr").return ?
{
@_SYSCALL_SCHED_GETATTR_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.sched_getattr.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_sched_getattr"), @const("__NR_compat_sched_getattr"))
@_SYSCALL_SCHED_GETATTR_NAME
@SYSC_RETVALSTR($ret)
}
|
