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# signalfd _____________________________________________________
#
# long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask)
# long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask,
# int flags)
# long compat_sys_signalfd(int ufd, const compat_sigset_t __user *sigmask,
# compat_size_t sigsetsize)
# long compat_sys_signalfd4(int ufd, const compat_sigset_t __user *sigmask,
# compat_size_t sigsetsize, int flags)
#
probe syscall.signalfd = dw_syscall.signalfd !, nd_syscall.signalfd ? {}
probe syscall.signalfd.return = dw_syscall.signalfd.return !,
nd_syscall.signalfd.return ? {}
probe syscall.compat_signalfd = dw_syscall.compat_signalfd !,
nd_syscall.compat_signalfd ? {}
probe syscall.compat_signalfd.return = dw_syscall.compat_signalfd.return !,
nd_syscall.compat_signalfd.return ? {}
@define _SYSCALL_SIGNALFD4_REGARGS_STORE
%(
if (@probewrite(flags))
set_int_arg(4, flags)
%)
# dw_signalfd _____________________________________________________
probe dw_syscall.signalfd = __syscall.signalfd4 !, __syscall.signalfd ?
{
flags = __int32(@choose_defined($flags, 0))
if (flags == 0) {
name = "signalfd"
argstr = sprintf("%d, %p, %d", __int32($ufd), @__pointer($user_mask),
$sizemask)
} else {
name = "signalfd4"
argstr = sprintf("%d, %p, %d, %s", __int32($ufd), @__pointer($user_mask),
$sizemask, _signalfd4_flags_str(flags))
}
}
probe __syscall.signalfd4 = kernel.function("sys_signalfd4").call
{
@__syscall_gate(@const("__NR_signalfd4"))
}
probe __syscall.signalfd = kernel.function("sys_signalfd").call
{
@__syscall_gate(@const("__NR_signalfd"))
}
probe dw_syscall.signalfd.return = __syscall.signalfd4.return !,
__syscall.signalfd.return ?
{
@SYSC_RETVALSTR($return)
}
probe __syscall.signalfd4.return = kernel.function("sys_signalfd4").return
{
@__syscall_gate(@const("__NR_signalfd4"))
flags = __int32(@entry($flags))
name = (flags == 0) ? "signalfd" : "signalfd4"
}
probe __syscall.signalfd.return = kernel.function("sys_signalfd").return
{
@__syscall_gate(@const("__NR_signalfd"))
flags = 0
name = "signalfd"
}
probe dw_syscall.compat_signalfd = kernel.function("compat_sys_signalfd4").call !,
kernel.function("compat_sys_signalfd").call ?
{
flags = __int32(@choose_defined($flags, 0))
if (flags == 0) {
name = "signalfd"
argstr = sprintf("%d, %p, %d", __int32($ufd), @__pointer($sigmask),
$sigsetsize)
} else {
name = "signalfd4"
argstr = sprintf("%d, %p, %d, %s", __int32($ufd), @__pointer($sigmask),
$sigsetsize, _signalfd4_flags_str(flags))
}
}
probe dw_syscall.compat_signalfd.return =
kernel.function("compat_sys_signalfd4").return !,
kernel.function("compat_sys_signalfd").return ?
{
flags = __int32(@entry(@choose_defined($flags, 0)))
name = (flags == 0) ? "signalfd" : "signalfd4"
@SYSC_RETVALSTR($return)
}
# nd_signalfd _____________________________________________________
probe nd_syscall.signalfd = nd1_syscall.signalfd!, nd2_syscall.signalfd!, tp_syscall.signalfd
{ }
probe nd1_syscall.signalfd = __nd1_syscall.signalfd4 !,
__nd1_syscall.signalfd ?
{
}
probe __nd1_syscall.signalfd4 = kprobe.function("sys_signalfd4")
{
@__syscall_gate(@const("__NR_signalfd4"))
asmlinkage()
flags = int_arg(4)
if (flags == 0) {
name = "signalfd"
argstr = sprintf("%d, %p, %d", int_arg(1), pointer_arg(2),
ulong_arg(3))
} else {
name = "signalfd4"
argstr = sprintf("%d, %p, %d, %s", int_arg(1), pointer_arg(2),
ulong_arg(3), _signalfd4_flags_str(flags))
}
}
probe __nd1_syscall.signalfd = kprobe.function("sys_signalfd")
{
@__syscall_gate(@const("__NR_signalfd"))
name = "signalfd"
asmlinkage()
flags = 0
argstr = sprintf("%d, %p, %d", int_arg(1), pointer_arg(2),
ulong_arg(3))
}
/* kernel 4.17+ */
probe nd2_syscall.signalfd = __nd2_syscall.signalfd4 !,
__nd2_syscall.signalfd ?
{
}
probe __nd2_syscall.signalfd4 = kprobe.function(@arch_syscall_prefix "sys_signalfd4")
{
__set_syscall_pt_regs(pointer_arg(1))
flags = int_arg(4)
if (flags == 0) {
name = "signalfd"
argstr = sprintf("%d, %p, %d", int_arg(1), pointer_arg(2),
ulong_arg(3))
} else {
name = "signalfd4"
argstr = sprintf("%d, %p, %d, %s", int_arg(1), pointer_arg(2),
ulong_arg(3), _signalfd4_flags_str(flags))
}
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_SIGNALFD4_REGARGS_STORE %)
}
probe __nd2_syscall.signalfd = kprobe.function(@arch_syscall_prefix "sys_signalfd")
{
__set_syscall_pt_regs(pointer_arg(1))
name = "signalfd"
flags = 0
argstr = sprintf("%d, %p, %d", int_arg(1), pointer_arg(2),
ulong_arg(3))
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.signalfd = __tp_syscall.signalfd4 !,
__tp_syscall.signalfd ?
{
}
probe __tp_syscall.signalfd4 = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_gate(@const("__NR_signalfd4"))
flags = int_arg(4)
if (flags == 0) {
name = "signalfd"
argstr = sprintf("%d, %p, %d", int_arg(1), pointer_arg(2),
ulong_arg(3))
} else {
name = "signalfd4"
argstr = sprintf("%d, %p, %d, %s", int_arg(1), pointer_arg(2),
ulong_arg(3), _signalfd4_flags_str(flags))
}
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_SIGNALFD4_REGARGS_STORE %)
}
probe __tp_syscall.signalfd = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_gate(@const("__NR_signalfd"))
name = "signalfd"
flags = 0
argstr = sprintf("%d, %p, %d", int_arg(1), pointer_arg(2),
ulong_arg(3))
}
probe nd_syscall.signalfd.return = nd1_syscall.signalfd.return!, nd2_syscall.signalfd.return!, tp_syscall.signalfd.return
{ }
probe nd1_syscall.signalfd.return = __nd1_syscall.signalfd4.return !,
__nd1_syscall.signalfd.return ?
{
@SYSC_RETVALSTR(returnval())
}
probe __nd1_syscall.signalfd4.return = kprobe.function("sys_signalfd4").return
{
@__syscall_gate(@const("__NR_signalfd4"))
flags = @entry(__asmlinkage_int_arg(4))
name = (flags == 0) ? "signalfd" : "signalfd4"
}
probe __nd1_syscall.signalfd.return = kprobe.function("sys_signalfd").return
{
@__syscall_gate(@const("__NR_signalfd"))
flags = 0
name = "signalfd"
}
/* kernel 4.17+ */
probe nd2_syscall.signalfd.return = __nd2_syscall.signalfd4.return !,
__nd2_syscall.signalfd.return ?
{
@SYSC_RETVALSTR(returnval())
}
probe __nd2_syscall.signalfd4.return = kprobe.function(@arch_syscall_prefix "sys_signalfd4").return
{
__set_syscall_pt_regs(@entry(pointer_arg(1)))
flags = int_arg(4)
name = (flags == 0) ? "signalfd" : "signalfd4"
}
probe __nd2_syscall.signalfd.return = kprobe.function(@arch_syscall_prefix "sys_signalfd").return
{
flags = 0
name = "signalfd"
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.signalfd.return = __tp_syscall.signalfd4.return !,
__tp_syscall.signalfd.return ?
{
@SYSC_RETVALSTR($ret)
}
probe __tp_syscall.signalfd4.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_gate(@const("__NR_signalfd4"))
flags = int_arg(4)
name = (flags == 0) ? "signalfd" : "signalfd4"
}
probe __tp_syscall.signalfd.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_gate(@const("__NR_signalfd4"))
flags = 0
name = "signalfd"
}
probe nd_syscall.compat_signalfd = nd1_syscall.compat_signalfd!, nd2_syscall.compat_signalfd!, tp_syscall.compat_signalfd
{ }
probe nd1_syscall.compat_signalfd = __nd1_syscall.compat_signalfd4 !,
__nd1_syscall.compat_signalfd ?
{
}
probe __nd1_syscall.compat_signalfd4 = kprobe.function("compat_sys_signalfd4")
{
asmlinkage()
flags = int_arg(4)
if (flags == 0) {
name = "signalfd"
argstr = sprintf("%d, %p, %d", int_arg(1), pointer_arg(2),
u32_arg(3))
} else {
name = "signalfd4"
argstr = sprintf("%d, %p, %d, %s", int_arg(1),
pointer_arg(2), u32_arg(3),
_signalfd4_flags_str(flags))
}
}
probe __nd1_syscall.compat_signalfd = kprobe.function("compat_sys_signalfd")
{
asmlinkage()
flags = 0
name = "signalfd"
argstr = sprintf("%d, %p, %d", int_arg(1), pointer_arg(2),
u32_arg(3))
}
/* kernel 4.17+ */
probe nd2_syscall.compat_signalfd = __nd2_syscall.compat_signalfd4 !,
__nd2_syscall.compat_signalfd ?
{
}
probe __nd2_syscall.compat_signalfd4 = kprobe.function(@arch_syscall_prefix "compat_sys_signalfd4")
{
__set_syscall_pt_regs(pointer_arg(1))
flags = int_arg(4)
if (flags == 0) {
name = "signalfd"
argstr = sprintf("%d, %p, %d", int_arg(1), pointer_arg(2),
u32_arg(3))
} else {
name = "signalfd4"
argstr = sprintf("%d, %p, %d, %s", int_arg(1),
pointer_arg(2), u32_arg(3),
_signalfd4_flags_str(flags))
}
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_SIGNALFD4_REGARGS_STORE %)
}
probe __nd2_syscall.compat_signalfd = kprobe.function(@arch_syscall_prefix "compat_sys_signalfd")
{
__set_syscall_pt_regs(pointer_arg(1))
flags = 0
name = "signalfd"
argstr = sprintf("%d, %p, %d", int_arg(1), pointer_arg(2),
u32_arg(3))
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.compat_signalfd = __tp_syscall.compat_signalfd4 !,
__tp_syscall.compat_signalfd ?
{
}
probe __tp_syscall.compat_signalfd4 = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__compat_syscall_gate(@const("__NR_compat_signalfd4"))
flags = int_arg(4)
if (flags == 0) {
name = "signalfd"
argstr = sprintf("%d, %p, %d", int_arg(1), pointer_arg(2),
u32_arg(3))
} else {
name = "signalfd4"
argstr = sprintf("%d, %p, %d, %s", int_arg(1),
pointer_arg(2), u32_arg(3),
_signalfd4_flags_str(flags))
}
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_SIGNALFD4_REGARGS_STORE %)
}
probe __tp_syscall.compat_signalfd = kernel.function("sys_enter")
{
__set_syscall_pt_regs($regs)
@__compat_syscall_gate(@const("__NR_compat_signalfd"))
flags = int_arg(4)
flags = 0
name = "signalfd"
argstr = sprintf("%d, %p, %d", int_arg(1), pointer_arg(2),
u32_arg(3))
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_SIGNALFD4_REGARGS_STORE %)
}
probe nd_syscall.compat_signalfd.return = nd1_syscall.compat_signalfd.return!, nd2_syscall.compat_signalfd.return!, tp_syscall.compat_signalfd.return
{ }
probe nd1_syscall.compat_signalfd.return =
__nd1_syscall.compat_signalfd4.return !,
__nd1_syscall.compat_signalfd.return ?
{
}
probe __nd1_syscall.compat_signalfd4.return =
kprobe.function("compat_sys_signalfd4").return
{
flags = @entry(__asmlinkage_int_arg(4))
name = (flags == 0) ? "signalfd" : "signalfd4"
@SYSC_RETVALSTR(returnval())
}
probe __nd1_syscall.compat_signalfd.return =
kprobe.function("compat_sys_signalfd").return
{
flags = 0
name = "signalfd"
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.compat_signalfd.return =
__nd2_syscall.compat_signalfd4.return !,
__nd2_syscall.compat_signalfd.return ?
{
}
probe __nd2_syscall.compat_signalfd4.return =
kprobe.function(@arch_syscall_prefix "compat_sys_signalfd4").return
{
__set_syscall_pt_regs(@entry(pointer_arg(1)))
flags = int_arg(4)
name = (flags == 0) ? "signalfd" : "signalfd4"
@SYSC_RETVALSTR(returnval())
}
probe __nd2_syscall.compat_signalfd.return =
kprobe.function(@arch_syscall_prefix "compat_sys_signalfd").return
{
flags = 0
name = "signalfd"
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.compat_signalfd.return =
__tp_syscall.compat_signalfd4.return !,
__tp_syscall.compat_signalfd.return ?
{
}
probe __tp_syscall.compat_signalfd4.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__compat_syscall_gate(@const("__NR_compat_signalfd4"))
flags = int_arg(4)
name = (flags == 0) ? "signalfd" : "signalfd4"
@SYSC_RETVALSTR($ret)
}
probe __tp_syscall.compat_signalfd.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__compat_syscall_gate(@const("__NR_compat_signalfd"))
flags = 0
name = "signalfd"
@SYSC_RETVALSTR($ret)
}