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# ioctl ______________________________________________________
# long sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg)
# long compat_sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg)
#
@define _SYSCALL_IOCTL_NAME
%(
name = "ioctl"
%)
@define _SYSCALL_IOCTL_ARGSTR
%(
argstr = sprintf("%d, %d, %p", fd, request, argp)
%)
@define _SYSCALL_IOCTL_REGARGS
%(
fd = int_arg(1)
request = int_arg(2)
argp = ulong_arg(3)
%)
@define _SYSCALL_IOCTL_REGARGS_STORE
%(
if (@probewrite(fd))
set_int_arg(1, fd)
if (@probewrite(request))
set_int_arg(2, request)
if (@probewrite(argp))
set_ulong_arg(3, argp)
%)
probe syscall.ioctl = dw_syscall.ioctl !, nd_syscall.ioctl ? {}
probe syscall.ioctl.return = dw_syscall.ioctl.return !, nd_syscall.ioctl.return ? {}
# dw_ioctl _____________________________________________________
probe dw_syscall.ioctl = __syscall.ioctl ?,
kernel.function("compat_sys_ioctl").call ?
{
@_SYSCALL_IOCTL_NAME
fd = __int32($fd)
request = __int32($cmd)
argp = @__compat_ulong(@choose_defined($arg, $arg32))
@_SYSCALL_IOCTL_ARGSTR
}
probe __syscall.ioctl = kernel.function("sys_ioctl").call
{
@__syscall_gate(@const("__NR_ioctl"))
}
probe dw_syscall.ioctl.return =
__syscall.ioctl.return ?,
kernel.function("compat_sys_ioctl").return ?
{
@_SYSCALL_IOCTL_NAME
@SYSC_RETVALSTR($return)
}
probe __syscall.ioctl.return = kernel.function("sys_ioctl").return
{
@__syscall_gate(@const("__NR_ioctl"))
}
# nd_ioctl _____________________________________________________
probe nd_syscall.ioctl = nd1_syscall.ioctl!, nd2_syscall.ioctl!, tp_syscall.ioctl
{ }
probe nd1_syscall.ioctl = __nd1_syscall.ioctl,
kprobe.function("compat_sys_ioctl") ?
{
asmlinkage()
@_SYSCALL_IOCTL_NAME
@_SYSCALL_IOCTL_REGARGS
@_SYSCALL_IOCTL_ARGSTR
}
probe __nd1_syscall.ioctl = kprobe.function("sys_ioctl")
{
@__syscall_gate(@const("__NR_ioctl"))
}
/* kernel 4.17+ */
probe nd2_syscall.ioctl = kprobe.function(@arch_syscall_prefix "sys_ioctl") ?,
kprobe.function(@arch_syscall_prefix "compat_sys_ioctl") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_IOCTL_NAME
@_SYSCALL_IOCTL_REGARGS
@_SYSCALL_IOCTL_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_IOCTL_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.ioctl = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_ioctl"), @const("__NR_compat_ioctl"))
@_SYSCALL_IOCTL_NAME
@_SYSCALL_IOCTL_REGARGS
@_SYSCALL_IOCTL_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_IOCTL_REGARGS_STORE %)
}
probe nd_syscall.ioctl.return = nd1_syscall.ioctl.return!, nd2_syscall.ioctl.return!, tp_syscall.ioctl.return
{ }
probe nd1_syscall.ioctl.return =
__nd1_syscall.ioctl.return,
kprobe.function("compat_sys_ioctl").return ?
{
@_SYSCALL_IOCTL_NAME
@SYSC_RETVALSTR(returnval())
}
probe __nd1_syscall.ioctl.return = kprobe.function("sys_ioctl").return
{
@__syscall_gate(@const("__NR_ioctl"))
}
/* kernel 4.17+ */
probe nd2_syscall.ioctl.return = kprobe.function(@arch_syscall_prefix "sys_ioctl").return ?,
kprobe.function(@arch_syscall_prefix "compat_sys_ioctl").return ?
{
@_SYSCALL_IOCTL_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.ioctl.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_ioctl"), @const("__NR_compat_ioctl"))
@_SYSCALL_IOCTL_NAME
@SYSC_RETVALSTR($ret)
}
|
