1#@!#!123s

: / usr / share / systemtap / tapset / linux /
Filename : sysc_timer_getoverrun.stp
back
# timer_getoverrun ___________________________________________
#
# long sys_timer_getoverrun(timer_t timer_id)
#

@define _SYSCALL_TIMER_GETOVERRUN_NAME
%(
	name = "timer_getoverrun"
%)

@define _SYSCALL_TIMER_GETOVERRUN_ARGSTR
%(
	argstr = sprint(timerid)
%)

@define _SYSCALL_TIMER_GETOVERRUN_REGARGS
%(
	timerid = int_arg(1)
%)

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

# dw_timer_getoverrun _____________________________________________________

probe dw_syscall.timer_getoverrun = kernel.function("sys_timer_getoverrun").call
{
	@_SYSCALL_TIMER_GETOVERRUN_NAME
	timerid = __int32($timer_id)
	@_SYSCALL_TIMER_GETOVERRUN_ARGSTR
}
probe dw_syscall.timer_getoverrun.return = kernel.function("sys_timer_getoverrun").return
{
	@_SYSCALL_TIMER_GETOVERRUN_NAME
	@SYSC_RETVALSTR($return)
}

# nd_timer_getoverrun _____________________________________________________

probe nd_syscall.timer_getoverrun = nd1_syscall.timer_getoverrun!, nd2_syscall.timer_getoverrun!, tp_syscall.timer_getoverrun
  { }

probe nd1_syscall.timer_getoverrun = kprobe.function("sys_timer_getoverrun") ?
{
	@_SYSCALL_TIMER_GETOVERRUN_NAME
	asmlinkage()
	@_SYSCALL_TIMER_GETOVERRUN_REGARGS
	@_SYSCALL_TIMER_GETOVERRUN_ARGSTR
}

/* kernel 4.17+ */
probe nd2_syscall.timer_getoverrun = kprobe.function(@arch_syscall_prefix "sys_timer_getoverrun") ?
{
	__set_syscall_pt_regs(pointer_arg(1))
	@_SYSCALL_TIMER_GETOVERRUN_NAME
	@_SYSCALL_TIMER_GETOVERRUN_REGARGS
	@_SYSCALL_TIMER_GETOVERRUN_ARGSTR
}

/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.timer_getoverrun = kernel.trace("sys_enter")
{
	__set_syscall_pt_regs($regs)
	@__syscall_compat_gate(@const("__NR_timer_getoverrun"), @const("__NR_compat_timer_getoverrun"))
	@_SYSCALL_TIMER_GETOVERRUN_NAME
	@_SYSCALL_TIMER_GETOVERRUN_REGARGS
	@_SYSCALL_TIMER_GETOVERRUN_ARGSTR
}

probe nd_syscall.timer_getoverrun.return = nd1_syscall.timer_getoverrun.return!, nd2_syscall.timer_getoverrun.return!, tp_syscall.timer_getoverrun.return
  { }

probe nd1_syscall.timer_getoverrun.return = kprobe.function("sys_timer_getoverrun").return ?
{
	@_SYSCALL_TIMER_GETOVERRUN_NAME
	@SYSC_RETVALSTR(returnval())
}

/* kernel 4.17+ */
probe nd2_syscall.timer_getoverrun.return = kprobe.function(@arch_syscall_prefix "sys_timer_getoverrun").return ?
{
	@_SYSCALL_TIMER_GETOVERRUN_NAME
	@SYSC_RETVALSTR(returnval())
}

/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.timer_getoverrun.return = kernel.trace("sys_exit")
{
	__set_syscall_pt_regs($regs)
	@__syscall_compat_gate(@const("__NR_timer_getoverrun"), @const("__NR_compat_timer_getoverrun"))
	@_SYSCALL_TIMER_GETOVERRUN_NAME
	@SYSC_RETVALSTR($ret)
}