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: / usr / share / systemtap / tapset / linux /
Filename : sysc_pselect6.stp
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# pselect6 _____________________________________________________
#
# long sys_pselect6(int n, fd_set __user *inp, fd_set __user *outp,
#	fd_set __user *exp, struct timespec __user *tsp, void __user *sig)
#

@define _SYSCALL_PSELECT6_NAME
%(
	name = "pselect6"
%)

@define _SYSCALL_PSELECT6_ARGSTR
%(
	argstr = sprintf("%d, %p, %p, %p, %s, %p", nfds, readfds, writefds,
	                 exceptfds, timeout_str, sigmask)
%)

@define _SYSCALL_PSELECT6_REGARGS
%(
	nfds = int_arg(1)
	readfds = pointer_arg(2)
	writefds = pointer_arg(3)
	exceptfds = pointer_arg(4)
	timeout = pointer_arg(5)
	sigmask = pointer_arg(6)
%)

probe syscall.pselect6 = dw_syscall.pselect6 !, nd_syscall.pselect6 ? {}
probe syscall.pselect6.return = dw_syscall.pselect6.return !,
                                nd_syscall.pselect6.return ? {}

# dw_pselect6 _____________________________________________________

probe dw_syscall.pselect6 = kernel.function("sys_pselect6").call ?
{
	@_SYSCALL_PSELECT6_NAME
	nfds = __int32($n)
	readfds = $inp
	writefds = $outp
	exceptfds = $exp
	timeout = $tsp
	timeout_str = _struct_timespec_u(timeout, 1)
	sigmask = $sig
	@_SYSCALL_PSELECT6_ARGSTR
}
probe dw_syscall.pselect6.return = kernel.function("sys_pselect6").return ?
{
	@_SYSCALL_PSELECT6_NAME
	@SYSC_RETVALSTR($return)
}

# nd_pselect6 _____________________________________________________

probe nd_syscall.pselect6 = nd1_syscall.pselect6!, nd2_syscall.pselect6!, tp_syscall.pselect6
  { }

probe nd1_syscall.pselect6 = kprobe.function("sys_pselect6") ?
{
	@_SYSCALL_PSELECT6_NAME
	asmlinkage()
	@_SYSCALL_PSELECT6_REGARGS
	timeout_str = _struct_timespec_u(timeout, 1)
	@_SYSCALL_PSELECT6_ARGSTR
}

/* kernel 4.17+ */
probe nd2_syscall.pselect6 = kprobe.function(@arch_syscall_prefix "sys_pselect6") ?
{
	__set_syscall_pt_regs(pointer_arg(1))
	@_SYSCALL_PSELECT6_NAME
	@_SYSCALL_PSELECT6_REGARGS
	timeout_str = _struct_timespec_u(timeout, 1)
	@_SYSCALL_PSELECT6_ARGSTR
}

/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.pselect6 = kernel.trace("sys_enter")
{
	__set_syscall_pt_regs($regs)
	@__syscall_gate(@const("__NR_pselect6"))
	@_SYSCALL_PSELECT6_NAME
	@_SYSCALL_PSELECT6_REGARGS
	timeout_str = _struct_timespec_u(timeout, 1)
	@_SYSCALL_PSELECT6_ARGSTR
}

probe nd_syscall.pselect6.return = nd1_syscall.pselect6.return!, nd2_syscall.pselect6.return!, tp_syscall.pselect6.return
  { }

probe nd1_syscall.pselect6.return = kprobe.function("sys_pselect6").return ?
{
	@_SYSCALL_PSELECT6_NAME
	@SYSC_RETVALSTR(returnval())
}

/* kernel 4.17+ */
probe nd2_syscall.pselect6.return = kprobe.function(@arch_syscall_prefix "sys_pselect6").return ?
{
	@_SYSCALL_PSELECT6_NAME
	@SYSC_RETVALSTR(returnval())
}
 
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.pselect6.return = kernel.trace("sys_exit")
{
	__set_syscall_pt_regs($regs)
	@__syscall_gate(@const("__NR_pselect6"))
	@_SYSCALL_PSELECT6_NAME
	@SYSC_RETVALSTR($ret)
}

# pselect6 _____________________________________________________
#
# long sys_pselect6(int n, fd_set __user *inp, fd_set __user *outp,
#	fd_set __user *exp, struct timespec __user *tsp, void __user *sig)
#

probe syscall.compat_pselect6 = dw_syscall.compat_pselect6 !, nd_syscall.compat_pselect6 ? {}
probe syscall.compat_pselect6.return = dw_syscall.compat_pselect6.return !,
                                       nd_syscall.compat_pselect6.return ? {}

# dw_compat_pselect6 _____________________________________________________

probe dw_syscall.compat_pselect6 = kernel.function("compat_sys_pselect6").call ?
{
	@_SYSCALL_PSELECT6_NAME
	nfds = __int32($n)
	readfds = @__pointer($inp)
	writefds = @__pointer($outp)
	exceptfds = @__pointer($exp)
	timeout = @__pointer($tsp)
	timeout_str = _struct_compat_timespec_u(timeout, 1)
	sigmask = @__pointer($sig)
	@_SYSCALL_PSELECT6_ARGSTR
}
probe dw_syscall.compat_pselect6.return = kernel.function("compat_sys_pselect6").return ?
{
	@_SYSCALL_PSELECT6_NAME
	@SYSC_RETVALSTR($return)
}

# nd_compat_pselect6 _____________________________________________________

probe nd_syscall.compat_pselect6 = nd1_syscall.compat_pselect6!, nd2_syscall.compat_pselect6!, tp_syscall.compat_pselect6
  { }

probe nd1_syscall.compat_pselect6 = kprobe.function("compat_sys_pselect6") ?
{
	@_SYSCALL_PSELECT6_NAME
	asmlinkage()
	@_SYSCALL_PSELECT6_REGARGS
	timeout_str = _struct_compat_timespec_u(timeout, 1)
	@_SYSCALL_PSELECT6_ARGSTR
}

probe nd2_syscall.compat_pselect6 = kprobe.function(@arch_syscall_prefix "compat_sys_pselect6") ?
{
	__set_syscall_pt_regs(pointer_arg(1))
	@_SYSCALL_PSELECT6_NAME
	@_SYSCALL_PSELECT6_REGARGS
	timeout_str = _struct_compat_timespec_u(timeout, 1)
	@_SYSCALL_PSELECT6_ARGSTR
}

probe tp_syscall.compat_pselect6 = kernel.trace("sys_enter")
{
	__set_syscall_pt_regs($regs)
	@__compat_syscall_gate(@const("__NR_compat_pselect6"))
	@_SYSCALL_PSELECT6_NAME
	@_SYSCALL_PSELECT6_REGARGS
	timeout_str = _struct_compat_timespec_u(timeout, 1)
	@_SYSCALL_PSELECT6_ARGSTR
}

probe nd_syscall.compat_pselect6.return = nd1_syscall.compat_pselect6.return!, nd2_syscall.compat_pselect6.return!, tp_syscall.compat_pselect6.return
  { }

probe nd1_syscall.compat_pselect6.return = kprobe.function("compat_sys_pselect6").return ?
{
	@_SYSCALL_PSELECT6_NAME
	@SYSC_RETVALSTR(returnval())
}

/* kernel 4.17+ */
probe nd2_syscall.compat_pselect6.return = kprobe.function(@arch_syscall_prefix "compat_sys_pselect6").return ?
{
	@_SYSCALL_PSELECT6_NAME
	@SYSC_RETVALSTR(returnval())
}

/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.compat_pselect6.return = kernel.trace("sys_exit")
{
	__set_syscall_pt_regs($regs)
	@__compat_syscall_gate(@const("__NR_compat_pselect6"))
	@_SYSCALL_PSELECT6_NAME
	@SYSC_RETVALSTR($ret)
}