^^&&^^

Edit File: sysc_nfsservctl.stp

# nfsservctl _________________________________________________
#
# long sys_nfsservctl(int cmd, struct nfsctl_arg __user *arg, void __user *res)
# long compat_sys_nfsservctl(int cmd, struct compat_nfsctl_arg __user *arg,
#					union compat_nfsctl_res __user *res)
#
# nfsservctl was removed in kernel 3.0/2.6.40.
%( kernel_v < "2.6.40" && CONFIG_NFSD == "[ym]" %?

@define _SYSCALL_NFSSERVCTL_NAME
%(
	name = "nfsservctl"
%)

@define _SYSCALL_NFSSERVCTL_ARGSTR
%(
	argstr = sprintf("%s, %p, %p", cmd_str, argp_uaddr, resp_uaddr)
%)

probe syscall.nfsservctl = dw_syscall.nfsservctl !, nd_syscall.nfsservctl ? {}
probe syscall.nfsservctl.return = dw_syscall.nfsservctl.return !,
                                  nd_syscall.nfsservctl.return ? {}

# dw_nfsservctl _____________________________________________________

probe dw_syscall.nfsservctl = __syscall.nfsservctl ?,
	kernel.function("compat_sys_nfsservctl").call ?
{
	@_SYSCALL_NFSSERVCTL_NAME
	cmd = __int32($cmd)
	cmd_str = _nfsctl_cmd_str(cmd)
	argp_uaddr = @choose_defined($arg, $notused)
	resp_uaddr = @choose_defined($res, $notused2)
	@_SYSCALL_NFSSERVCTL_ARGSTR
}
probe __syscall.nfsservctl = kernel.function("sys_nfsservctl").call ?
{
	@__syscall_gate_compat_simple
}
probe dw_syscall.nfsservctl.return = __syscall.nfsservctl.return ?,
	kernel.function("compat_sys_nfsservctl").return ?
{
	@_SYSCALL_NFSSERVCTL_NAME
	@SYSC_RETVALSTR($return)
}
probe __syscall.nfsservctl.return = kernel.function("sys_nfsservctl").return ?
{
	@__syscall_gate_compat_simple
}

# nd_nfsservctl _____________________________________________________

probe nd_syscall.nfsservctl = __nd_syscall.nfsservctl ?,
	kprobe.function("compat_sys_nfsservctl") ?
{
	@_SYSCALL_NFSSERVCTL_NAME
	asmlinkage()
	cmd = int_arg(1)
	cmd_str = _nfsctl_cmd_str(cmd)
	argp_uaddr = pointer_arg(2)
	resp_uaddr = pointer_arg(3)
	@_SYSCALL_NFSSERVCTL_ARGSTR
}
probe __nd_syscall.nfsservctl = kprobe.function("sys_nfsservctl") ?
{
	@__syscall_gate_compat_simple
}
probe nd_syscall.nfsservctl.return = __nd_syscall.nfsservctl.return ?,
	kprobe.function("compat_sys_nfsservctl").return ?
{
	@_SYSCALL_NFSSERVCTL_NAME
	@SYSC_RETVALSTR(returnval())
}
probe __nd_syscall.nfsservctl.return =
	kprobe.function("sys_nfsservctl").return ?
{
	@__syscall_gate_compat_simple
}
%)