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Buat File | Buat Folder

Dir : ~/usr/share/systemtap/tapset/linux/

View File Name : sysc_pause.stp

# pause ______________________________________________________
#
# sys_pause(void)
#

@define _SYSCALL_PAUSE_NAME
%(
	name = "pause"
%)

@define _SYSCALL_PAUSE_ARGSTR
%(
	argstr = ""
%)

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

# dw_pause _____________________________________________________

probe dw_syscall.pause = kernel.function("sys_pause").call ?,
                      kernel.function("sys32_pause").call ?,
                      kernel.function("compat_sys_pause").call ?
{
	@_SYSCALL_PAUSE_NAME
	@_SYSCALL_PAUSE_ARGSTR
}
probe dw_syscall.pause.return = kernel.function("sys_pause").return ?,
                             kernel.function("sys32_pause").return ?,
                             kernel.function("compat_sys_pause").return ?
{
	@_SYSCALL_PAUSE_NAME
	@SYSC_RETVALSTR($return)
}

# nd_pause _____________________________________________________

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

probe nd1_syscall.pause = kprobe.function("sys_pause") ?,
                         kprobe.function("sys32_pause") ?,
                         kprobe.function("compat_sys_pause") ?
{
	@_SYSCALL_PAUSE_NAME
	@_SYSCALL_PAUSE_ARGSTR
}

/* kernel 4.17+ */
probe nd2_syscall.pause = kprobe.function(@arch_syscall0_prefix "sys_pause") ?
{
	@_SYSCALL_PAUSE_NAME
	@_SYSCALL_PAUSE_ARGSTR
}

/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.pause = kernel.trace("sys_enter") ?
{
	@__syscall_compat_gate(@const("__NR_pause"), @const("__NR_compat_pause"))
	@_SYSCALL_PAUSE_NAME
	@_SYSCALL_PAUSE_ARGSTR
}

probe nd_syscall.pause.return = nd1_syscall.pause.return!, nd2_syscall.pause.return!, tp_syscall.pause.return
  { }
  
probe nd1_syscall.pause.return = kprobe.function("sys_pause").return ?,
                                kprobe.function("sys32_pause").return ?,
                                kprobe.function("compat_sys_pause").return ?
{
	@_SYSCALL_PAUSE_NAME
	@SYSC_RETVALSTR(returnval())
}

/* kernel 4.17+ */
probe nd2_syscall.pause.return = kprobe.function(@arch_syscall0_prefix "sys_pause").return ?
{
	@_SYSCALL_PAUSE_NAME
	@SYSC_RETVALSTR(returnval())
}

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