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# keyctl _____________________________________________________
# long sys_keyctl(int option,
# unsigned long arg2,
# unsigned long arg3,
# unsigned long arg4,
# unsigned long arg5)
# long compat_sys_keyctl(u32 option, u32 arg2, u32 arg3, u32 arg4, u32 arg5)
#
@define _SYSCALL_KEYCTL_NAME
%(
name = "keyctl"
%)
@define _SYSCALL_KEYCTL_REGARGS
%(
option = int_arg(1)
arg2 = ulong_arg(2)
arg3 = ulong_arg(3)
arg4 = ulong_arg(4)
arg5 = ulong_arg(5)
%)
@define _SYSCALL_KEYCTL_REGARGS_STORE
%(
if (@probewrite(option))
set_int_arg(1, option)
if (@probewrite(arg2))
set_ulong_arg(2, arg2)
if (@probewrite(arg3))
set_ulong_arg(3, arg3)
if (@probewrite(arg4))
set_ulong_arg(4, arg4)
if (@probewrite(arg5))
set_ulong_arg(5, arg5)
%)
probe syscall.keyctl = dw_syscall.keyctl !, nd_syscall.keyctl ? {}
probe syscall.keyctl.return = dw_syscall.keyctl.return !, nd_syscall.keyctl.return ? {}
# dw_keyctl _____________________________________________________
probe dw_syscall.keyctl = kernel.function("compat_sys_keyctl").call ?,
kernel.function("sys_keyctl").call ?
{
@_SYSCALL_KEYCTL_NAME
option = __int32($option)
arg2 = @__compat_ulong($arg2)
arg3 = @__compat_ulong($arg3)
arg4 = @__compat_ulong($arg4)
arg5 = @__compat_ulong($arg5)
@__keyctl_argstr(option, arg2, arg3, arg4, arg5)
}
probe dw_syscall.keyctl.return = kernel.function("compat_sys_keyctl").return ?,
kernel.function("sys_keyctl").return ?
{
@_SYSCALL_KEYCTL_NAME
@SYSC_RETVALSTR($return)
}
# nd_keyctl _____________________________________________________
probe nd_syscall.keyctl = nd1_syscall.keyctl!, nd2_syscall.keyctl!, tp_syscall.keyctl
{ }
probe nd1_syscall.keyctl = kprobe.function("compat_sys_keyctl") ?,
kprobe.function("sys_keyctl") ?
{
@_SYSCALL_KEYCTL_NAME
asmlinkage()
@_SYSCALL_KEYCTL_REGARGS
@__keyctl_argstr(option, arg2, arg3, arg4, arg5)
}
/* kernel 4.17+ */
probe nd2_syscall.keyctl = kprobe.function(@arch_syscall_prefix "compat_sys_keyctl") ?,
kprobe.function(@arch_syscall_prefix "sys_keyctl") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_KEYCTL_NAME
@_SYSCALL_KEYCTL_REGARGS
@__keyctl_argstr(option, arg2, arg3, arg4, arg5)
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_KEYCTL_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.keyctl = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_keyctl"), @const("__NR_compat_keyctl"))
@_SYSCALL_KEYCTL_NAME
@_SYSCALL_KEYCTL_REGARGS
@__keyctl_argstr(option, arg2, arg3, arg4, arg5)
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_KEYCTL_REGARGS_STORE %)
}
probe nd_syscall.keyctl.return = nd1_syscall.keyctl.return!, nd2_syscall.keyctl.return!, tp_syscall.keyctl.return
{ }
probe nd1_syscall.keyctl.return = kprobe.function("compat_sys_keyctl").return ?,
kprobe.function("sys_keyctl").return ?
{
@_SYSCALL_KEYCTL_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.keyctl.return = kprobe.function(@arch_syscall_prefix "compat_sys_keyctl").return ?,
kprobe.function(@arch_syscall_prefix "sys_keyctl").return ?
{
@_SYSCALL_KEYCTL_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.keyctl.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_keyctl"), @const("__NR_compat_keyctl"))
@_SYSCALL_KEYCTL_NAME
@SYSC_RETVALSTR($ret)
}
|
