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|
# kexec_load _________________________________________________
# long sys_kexec_load(unsigned long entry,
# unsigned long nr_segments,
# struct kexec_segment __user *segments,
# unsigned long flags)
# long compat_sys_kexec_load(unsigned long entry,
# unsigned long nr_segments,
# struct compat_kexec_segment __user *segments,
# unsigned long flags)
#
@define _SYSCALL_KEXEC_LOAD_NAME
%(
name = "kexec_load"
%)
@define _SYSCALL_KEXEC_LOAD_ARGSTR
%(
argstr = sprintf("%p, %u, %p, %s", entry, nr_segments, segments_uaddr, flags_str)
%)
@define _SYSCALL_KEXEC_LOAD_REGARGS
%(
entry = ulong_arg(1)
nr_segments = ulong_arg(2)
segments_uaddr = pointer_arg(3)
flags = ulong_arg(4)
flags_str = _kexec_flags_str(flags)
%)
@define _SYSCALL_KEXEC_LOAD_REGARGS_STORE
%(
if (@probewrite(entry))
set_ulong_arg(1, entry)
if (@probewrite(nr_segments))
set_ulong_arg(2, nr_segments)
if (@probewrite(segments_uaddr))
set_pointer_arg(3, segments_uaddr)
if (@probewrite(flags))
set_ulong_arg(4, flags)
%)
probe syscall.kexec_load = dw_syscall.kexec_load !, nd_syscall.kexec_load ? {}
probe syscall.kexec_load.return = dw_syscall.kexec_load.return !,
nd_syscall.kexec_load.return ? {}
# dw_kexec_load _____________________________________________________
probe dw_syscall.kexec_load = __syscall.kexec_load.call ?,
kernel.function("compat_sys_kexec_load").call ?
{
@_SYSCALL_KEXEC_LOAD_NAME
entry = @__compat_ulong($entry)
nr_segments = __ulong($nr_segments)
segments_uaddr = @__pointer($segments)
flags = @__compat_ulong($flags)
flags_str = _kexec_flags_str(flags)
@_SYSCALL_KEXEC_LOAD_ARGSTR
}
probe __syscall.kexec_load.call = kernel.function("sys_kexec_load").call
{
@__syscall_gate_compat_simple
}
probe dw_syscall.kexec_load.return = __syscall.syscall.kexec_load.return ?,
kernel.function("compat_sys_kexec_load").return ?
{
@_SYSCALL_KEXEC_LOAD_NAME
@SYSC_RETVALSTR($return)
}
probe __syscall.syscall.kexec_load.return = kernel.function("sys_kexec_load").return
{
@__syscall_gate_compat_simple
}
# nd_kexec_load _____________________________________________________
probe nd_syscall.kexec_load = nd1_syscall.kexec_load!, nd2_syscall.kexec_load!, tp_syscall.kexec_load
{ }
probe nd1_syscall.kexec_load = __nd1_syscall.kexec_load ?,
kprobe.function("compat_sys_kexec_load") ?
{
@_SYSCALL_KEXEC_LOAD_NAME
asmlinkage()
@_SYSCALL_KEXEC_LOAD_REGARGS
@_SYSCALL_KEXEC_LOAD_ARGSTR
}
probe __nd1_syscall.kexec_load = kprobe.function("sys_kexec_load")
{
@__syscall_gate_compat_simple
}
/* kernel 4.17+ */
probe nd2_syscall.kexec_load = kprobe.function(@arch_syscall_prefix "sys_kexec_load") ?,
kprobe.function(@arch_syscall_prefix "compat_sys_kexec_load") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_KEXEC_LOAD_NAME
@_SYSCALL_KEXEC_LOAD_REGARGS
@_SYSCALL_KEXEC_LOAD_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_KEXEC_LOAD_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.kexec_load = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_kexec_load"), @const("__NR_compat_kexec_load"))
@_SYSCALL_KEXEC_LOAD_NAME
@_SYSCALL_KEXEC_LOAD_REGARGS
@_SYSCALL_KEXEC_LOAD_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_KEXEC_LOAD_REGARGS_STORE %)
}
probe nd_syscall.kexec_load.return = nd1_syscall.kexec_load.return!, nd2_syscall.kexec_load.return!, tp_syscall.kexec_load.return
{ }
probe nd1_syscall.kexec_load.return = __nd1_syscall.kexec_load.return ?,
kprobe.function("compat_sys_kexec_load").return ?
{
@_SYSCALL_KEXEC_LOAD_NAME
@SYSC_RETVALSTR(returnval())
}
probe __nd1_syscall.kexec_load.return = kprobe.function("sys_kexec_load").return
{
@__syscall_gate_compat_simple
}
/* kernel 4.17+ */
probe nd2_syscall.kexec_load.return = kprobe.function(@arch_syscall_prefix "sys_kexec_load").return ?,
kprobe.function(@arch_syscall_prefix "compat_sys_kexec_load").return ?
{
@_SYSCALL_KEXEC_LOAD_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.kexec_load.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_kexec_load"), @const("__NR_compat_kexec_load"))
@_SYSCALL_KEXEC_LOAD_NAME
@SYSC_RETVALSTR($ret)
}
|
