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|
# mlock2 _____________________________________________________
#
# long sys_mlock2(unsigned long start, size_t len, int flags)
#
@define _SYSCALL_MLOCK2_NAME
%(
name = "mlock2"
%)
@define _SYSCALL_MLOCK2_ARGSTR
%(
argstr = sprintf("%p, %u, %s", addr, len, flags_str)
%)
@define _SYSCALL_MLOCK2_REGARGS
%(
addr = ulong_arg(1)
len = ulong_arg(2)
flags = int_arg(3)
flags_str = _stp_mlock2_str(flags)
%)
@define _SYSCALL_MLOCK2_REGARGS_STORE
%(
if (@probewrite(addr))
set_ulong_arg(1, addr)
if (@probewrite(len))
set_ulong_arg(2, len)
if (@probewrite(flags))
set_int_arg(3, flags)
%)
probe syscall.mlock2 = dw_syscall.mlock2 !, nd_syscall.mlock2 ? {}
probe syscall.mlock2.return = dw_syscall.mlock2.return !, nd_syscall.mlock2.return ? {}
# dw_mlock2 _____________________________________________________
probe dw_syscall.mlock2 = kernel.function("sys_mlock2").call ?
{
@_SYSCALL_MLOCK2_NAME
addr = __ulong($start)
len = __ulong($len)
flags = __int32($flags)
flags_str = _stp_mlock2_str(__int32($flags))
@_SYSCALL_MLOCK2_ARGSTR
}
probe dw_syscall.mlock2.return = kernel.function("sys_mlock2").return ?
{
@_SYSCALL_MLOCK2_NAME
@SYSC_RETVALSTR($return)
}
# nd_mlock2 _____________________________________________________
probe nd_syscall.mlock2 = nd1_syscall.mlock2!, nd2_syscall.mlock2!, tp_syscall.mlock2
{ }
probe nd1_syscall.mlock2 = kprobe.function("sys_mlock2") ?
{
@_SYSCALL_MLOCK2_NAME
asmlinkage()
@_SYSCALL_MLOCK2_REGARGS
@_SYSCALL_MLOCK2_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.mlock2 = kprobe.function(@arch_syscall_prefix "sys_mlock2") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_MLOCK2_NAME
@_SYSCALL_MLOCK2_REGARGS
@_SYSCALL_MLOCK2_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_MLOCK2_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.mlock2 = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_mlock2"), @const("__NR_compat_mlock2"))
@_SYSCALL_MLOCK2_NAME
@_SYSCALL_MLOCK2_REGARGS
@_SYSCALL_MLOCK2_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_MLOCK2_REGARGS_STORE %)
}
probe nd_syscall.mlock2.return = nd1_syscall.mlock2.return!, nd2_syscall.mlock2.return!, tp_syscall.mlock2.return
{ }
probe nd1_syscall.mlock2.return = kprobe.function("sys_mlock2").return ?
{
@_SYSCALL_MLOCK2_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.mlock2.return = kprobe.function(@arch_syscall_prefix "sys_mlock2").return ?
{
@_SYSCALL_MLOCK2_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.mlock2.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_mlock2"), @const("__NR_compat_mlock2"))
@_SYSCALL_MLOCK2_NAME
@SYSC_RETVALSTR($ret)
}
|
