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Filename : sysc_ni_syscall.stp
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# ni_syscall _________________________________________________
#
# long sys_ni_syscall(void)
#

@define _SYSCALL_NI_SYSCALL_NAME
%(
	name = "ni_syscall"
%)

@define _SYSCALL_NI_SYSCALL_ARGSTR
%(
	argstr = ""
%)

@define _SYSCALL_GATE
%(
%( kernel_v < "3.1" %?
	// Kernel commit 49b2868 removed nfsservctl.
	//
	// We want to ignore compat nfsservctl calls, since
	// compat_sys_nfsservctl() calls sys_ni_syscall().
	@__compat_syscall_gate_negative(@const("__NR_compat_nfsservctl"))
%)
%)

probe syscall.ni_syscall = dw_syscall.ni_syscall !, nd_syscall.ni_syscall {}
probe syscall.ni_syscall.return = dw_syscall.ni_syscall.return !,
                                  nd_syscall.ni_syscall.return {}

# dw_ni_syscall _____________________________________________________

probe dw_syscall.ni_syscall = kernel.function("sys_ni_syscall").call
{
	@_SYSCALL_GATE
	@_SYSCALL_NI_SYSCALL_NAME
	@_SYSCALL_NI_SYSCALL_ARGSTR
}
probe dw_syscall.ni_syscall.return = kernel.function("sys_ni_syscall").return
{
	@_SYSCALL_GATE
	@_SYSCALL_NI_SYSCALL_NAME
	@SYSC_RETVALSTR($return)
}

# nd_ni_syscall _____________________________________________________

probe nd_syscall.ni_syscall = kprobe.function("sys_ni_syscall")
{
	@_SYSCALL_GATE
	@_SYSCALL_NI_SYSCALL_NAME
	@_SYSCALL_NI_SYSCALL_ARGSTR
}
probe nd_syscall.ni_syscall.return = kprobe.function("sys_ni_syscall").return
{
	@_SYSCALL_GATE
	@_SYSCALL_NI_SYSCALL_NAME
	@SYSC_RETVALSTR(returnval())
}