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|
# bdflush ____________________________________________________
# long sys_bdflush(int func, long data)
@define _SYSCALL_BDFLUSH_NAME
%(
name = "bdflush"
%)
@define _SYSCALL_BDFLUSH_ARGSTR
%(
argstr = sprintf("%d, %s", func, data_str)
%)
@define _SYSCALL_BDFLUSH_REGARGS
%(
func = int_arg(1)
data = long_arg(2)
%)
@define _SYSCALL_BDFLUSH_REGARGS_STORE
%(
if (@probewrite(func))
set_int_arg(1, func)
if (@probewrite(data))
set_long_arg(2, data)
%)
probe syscall.bdflush = dw_syscall.bdflush !, nd_syscall.bdflush ? {}
probe syscall.bdflush.return = dw_syscall.bdflush.return !, nd_syscall.bdflush.return ? {}
# dw_bdflush _____________________________________________________
probe dw_syscall.bdflush = kernel.function("sys_bdflush").call ?
{
@_SYSCALL_BDFLUSH_NAME
func = $func
data = $data
if (($func >= 2) && ($func % 2 == 0))
data_str = sprintf("%p", $data)
else
data_str = sprintf("%d", $data)
@_SYSCALL_BDFLUSH_ARGSTR
}
probe dw_syscall.bdflush.return = kernel.function("sys_bdflush").return ?
{
@_SYSCALL_BDFLUSH_NAME
@SYSC_RETVALSTR($return)
}
# nd_bdflush _____________________________________________________
probe nd_syscall.bdflush = nd1_syscall.bdflush!, nd2_syscall.bdflush!, tp_syscall.bdflush
{
}
probe nd1_syscall.bdflush = kprobe.function("sys_bdflush") ?
{
@_SYSCALL_BDFLUSH_NAME
asmlinkage()
@_SYSCALL_BDFLUSH_REGARGS
if ((func >= 2) && (func % 2 == 0))
data_str = sprintf("%p", data)
else
data_str = sprintf("%d", data)
@_SYSCALL_BDFLUSH_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.bdflush = kprobe.function(@arch_syscall_prefix "sys_bdflush") ?
{
@_SYSCALL_BDFLUSH_NAME
asmlinkage()
@_SYSCALL_BDFLUSH_REGARGS
if ((func >= 2) && (func % 2 == 0))
data_str = sprintf("%p", data)
else
data_str = sprintf("%d", data)
@_SYSCALL_BDFLUSH_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_BDFLUSH_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.bdflush = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_bdflush"), @const("__NR_compat_bdflush"))
@_SYSCALL_BDFLUSH_NAME
@_SYSCALL_BDFLUSH_REGARGS
if ((func >= 2) && (func % 2 == 0))
data_str = sprintf("%p", data)
else
data_str = sprintf("%d", data)
@_SYSCALL_BDFLUSH_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_BDFLUSH_REGARGS_STORE %)
}
probe nd_syscall.bdflush.return = nd1_syscall.bdflush.return!, nd2_syscall.bdflush.return!, tp_syscall.bdflush.return
{
}
probe nd1_syscall.bdflush.return = kprobe.function("sys_bdflush").return ?
{
@_SYSCALL_BDFLUSH_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.bdflush.return = kprobe.function(@arch_syscall_prefix "sys_bdflush").return ?
{
@_SYSCALL_BDFLUSH_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.bdflush.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_bdflush"), @const("__NR_compat_bdflush"))
@_SYSCALL_BDFLUSH_NAME
@SYSC_RETVALSTR($ret)
}
|
