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# vmsplice ___________________________________________________
#
# long sys_vmsplice(int fd, const struct iovec __user *iov,
# unsigned long nr_segs, unsigned int flags)
# long compat_sys_vmsplice(int fd, const struct compat_iovec __user *iov32,
# unsigned int nr_segs, unsigned int flags)
#
@define _SYSCALL_VMSPLICE_NAME
%(
name = "vmsplice"
%)
@define _SYSCALL_VMSPLICE_ARGSTR
%(
argstr = sprintf("%d, %p, %u, %s", fd, iov, nr_segs, flags_str)
%)
@define _SYSCALL_VMSPLICE_REGARGS
%(
fd = int_arg(1)
iov = pointer_arg(2)
nr_segs = ulong_arg(3)
flags = uint_arg(4)
flags_str = _stp_splice_flags_str(flags)
%)
probe syscall.vmsplice = dw_syscall.vmsplice !, nd_syscall.vmsplice ? {}
probe syscall.vmsplice.return = dw_syscall.vmsplice.return !,
nd_syscall.vmsplice.return ? {}
# dw_vmsplice _____________________________________________________
probe dw_syscall.vmsplice = kernel.function("sys_vmsplice").call ?
{
@__syscall_gate_compat_simple
@_SYSCALL_VMSPLICE_NAME
fd = __int32($fd)
iov = $iov
nr_segs = __ulong($nr_segs)
flags = $flags
flags_str = _stp_splice_flags_str(flags)
@_SYSCALL_VMSPLICE_ARGSTR
}
probe dw_syscall.vmsplice.return = kernel.function("sys_vmsplice").return ?
{
@__syscall_gate_compat_simple
@_SYSCALL_VMSPLICE_NAME
@SYSC_RETVALSTR($return)
}
# nd_vmsplice _____________________________________________________
probe nd_syscall.vmsplice = nd1_syscall.vmsplice!, nd2_syscall.vmsplice!, tp_syscall.vmsplice
{ }
probe nd1_syscall.vmsplice = kprobe.function("sys_vmsplice") ?
{
@__syscall_gate_compat_simple
@_SYSCALL_VMSPLICE_NAME
asmlinkage()
@_SYSCALL_VMSPLICE_REGARGS
@_SYSCALL_VMSPLICE_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.vmsplice = kprobe.function(@arch_syscall_prefix "sys_vmsplice") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_VMSPLICE_NAME
@_SYSCALL_VMSPLICE_REGARGS
@_SYSCALL_VMSPLICE_ARGSTR
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.vmsplice = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_gate(@const("__NR_vmsplice"))
@_SYSCALL_VMSPLICE_NAME
@_SYSCALL_VMSPLICE_REGARGS
@_SYSCALL_VMSPLICE_ARGSTR
}
probe nd_syscall.vmsplice.return = nd1_syscall.vmsplice.return!, nd2_syscall.vmsplice.return!, tp_syscall.vmsplice.return
{ }
probe nd1_syscall.vmsplice.return = kprobe.function("sys_vmsplice").return ?
{
@__syscall_gate_compat_simple
@_SYSCALL_VMSPLICE_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.vmsplice.return = kprobe.function(@arch_syscall_prefix "sys_vmsplice").return ?
{
@_SYSCALL_VMSPLICE_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.vmsplice.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_gate(@const("__NR_vmsplice"))
@_SYSCALL_VMSPLICE_NAME
@SYSC_RETVALSTR($ret)
}
# compat_vmsplice ____________________________________________
#
# long sys_vmsplice(int fd, const struct iovec __user *iov,
# unsigned long nr_segs, unsigned int flags)
# long compat_sys_vmsplice(int fd, const struct compat_iovec __user *iov32,
# unsigned int nr_segs, unsigned int flags)
#
probe syscall.compat_vmsplice = dw_syscall.compat_vmsplice !,
nd_syscall.compat_vmsplice ? {}
probe syscall.compat_vmsplice.return = dw_syscall.compat_vmsplice.return !,
nd_syscall.compat_vmsplice.return ? {}
# dw_compat_vmsplice _____________________________________________________
probe dw_syscall.compat_vmsplice = kernel.function("compat_sys_vmsplice").call ?
{
@_SYSCALL_VMSPLICE_NAME
fd = __int32($fd)
iov = @__pointer($iov32)
nr_segs = __uint32($nr_segs)
flags = $flags
flags_str = _stp_splice_flags_str(flags)
@_SYSCALL_VMSPLICE_ARGSTR
}
probe dw_syscall.compat_vmsplice.return = kernel.function("compat_sys_vmsplice").return ?
{
@_SYSCALL_VMSPLICE_NAME
@SYSC_RETVALSTR($return)
}
# nd_compat_vmsplice _____________________________________________________
probe nd_syscall.compat_vmsplice = nd1_syscall.compat_vmsplice!, nd2_syscall.compat_vmsplice!, tp_syscall.compat_vmsplice
{ }
probe nd1_syscall.compat_vmsplice = kprobe.function("compat_sys_vmsplice") ?
{
@_SYSCALL_VMSPLICE_NAME
asmlinkage()
@_SYSCALL_VMSPLICE_REGARGS
@_SYSCALL_VMSPLICE_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.compat_vmsplice =
kprobe.function(@arch_syscall_prefix "compat_sys_vmsplice") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_VMSPLICE_NAME
@_SYSCALL_VMSPLICE_REGARGS
@_SYSCALL_VMSPLICE_ARGSTR
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.compat_vmsplice = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__compat_syscall_gate(@const("__NR_compat_vmsplice"))
@_SYSCALL_VMSPLICE_NAME
@_SYSCALL_VMSPLICE_REGARGS
@_SYSCALL_VMSPLICE_ARGSTR
}
probe nd_syscall.compat_vmsplice.return = nd1_syscall.compat_vmsplice.return!, nd2_syscall.compat_vmsplice.return!, tp_syscall.compat_vmsplice.return
{ }
probe nd1_syscall.compat_vmsplice.return = kprobe.function("compat_sys_vmsplice").return ?
{
@_SYSCALL_VMSPLICE_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.compat_vmsplice.return =
kprobe.function(@arch_syscall_prefix "compat_sys_vmsplice").return ?
{
@_SYSCALL_VMSPLICE_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.compat_vmsplice.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__compat_syscall_gate(@const("__NR_compat_vmsplice"))
@_SYSCALL_VMSPLICE_NAME
@SYSC_RETVALSTR($ret)
}
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