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# fcntl ______________________________________________________
# long sys_fcntl(int fd, unsigned int cmd, unsigned long arg)
# long sys_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg)
# long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg)
# long compat_sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg)
#
@define _SYSCALL_FCNTL_NAME
%(
name = "fcntl"
%)
@define _SYSCALL_FCNTL_ARGSTR
%(
argstr = sprintf("%d, %s, %p", fd, cmd_str, arg)
%)
@define _SYSCALL_FCNTL_REGARGS
%(
fd = int_arg(1)
cmd = int_arg(2)
cmd_str = _fcntl_cmd_str(cmd)
arg = long_arg(3)
%)
@define _SYSCALL_FCNTL_REGARGS_STORE
%(
if (@probewrite(fd))
set_int_arg(1, fd)
if (@probewrite(cmd))
set_int_arg(2, cmd)
if (@probewrite(arg))
set_long_arg(3, arg)
%)
probe syscall.fcntl = dw_syscall.fcntl !, nd_syscall.fcntl ? {}
probe syscall.fcntl.return = dw_syscall.fcntl.return !, nd_syscall.fcntl.return ? {}
# dw_fcntl _____________________________________________________
probe dw_syscall.fcntl = __dw_syscall.fcntl,
kernel.function("compat_sys_fcntl").call ?,
kernel.function("compat_sys_fcntl64").call ?
{
@_SYSCALL_FCNTL_NAME
fd = __int32($fd)
cmd = __int32($cmd)
cmd_str = _fcntl_cmd_str(cmd)
arg = @__pointer($arg)
@_SYSCALL_FCNTL_ARGSTR
}
probe __dw_syscall.fcntl = kernel.function("sys_fcntl64").call ?,
kernel.function("sys_fcntl").call ?
{
@__syscall_gate_compat_simple
}
probe dw_syscall.fcntl.return = __dw_syscall.fcntl.return,
kernel.function("compat_sys_fcntl").return ?,
kernel.function("compat_sys_fcntl64").return ?
{
@_SYSCALL_FCNTL_NAME
@SYSC_RETVALSTR($return)
}
probe __dw_syscall.fcntl.return = kernel.function("sys_fcntl64").return ?,
kernel.function("sys_fcntl").return ?
{
@__syscall_gate_compat_simple
}
# nd_fcntl _____________________________________________________
probe nd_syscall.fcntl = nd1_syscall.fcntl!, nd2_syscall.fcntl!, tp_syscall.fcntl
{ }
probe nd1_syscall.fcntl = __nd1_syscall.fcntl,
kprobe.function("compat_sys_fcntl") ?,
kprobe.function("compat_sys_fcntl64") ?
{
@_SYSCALL_FCNTL_NAME
asmlinkage()
@_SYSCALL_FCNTL_REGARGS
@_SYSCALL_FCNTL_ARGSTR
}
probe __nd1_syscall.fcntl = kprobe.function("sys_fcntl64") ?,
kprobe.function("sys_fcntl") ?
{
@__syscall_gate_compat_simple
}
/* kernel 4.17+ */
probe nd2_syscall.fcntl = kprobe.function(@arch_syscall_prefix "sys_fcntl") ?,
kprobe.function(@arch_syscall_prefix "compat_sys_fcntl64") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_FCNTL_NAME
@_SYSCALL_FCNTL_REGARGS
@_SYSCALL_FCNTL_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_FCNTL_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.fcntl = __tp_syscall.fcntl, __tp_syscall.fcntl64
{
__set_syscall_pt_regs($regs)
@_SYSCALL_FCNTL_NAME
@_SYSCALL_FCNTL_REGARGS
@_SYSCALL_FCNTL_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_FCNTL_REGARGS_STORE %)
}
probe __tp_syscall.fcntl = kernel.trace("sys_enter")
{
@__syscall_compat_gate(@const("__NR_fcntl"), @const("__NR_compat_fcntl"))
}
probe __tp_syscall.fcntl64 = kernel.trace("sys_enter")
{
@__syscall_compat_gate(@const("__NR_fcntl64"), @const("__NR_compat_fcntl64"))
}
probe nd_syscall.fcntl.return = nd1_syscall.fcntl.return!, nd2_syscall.fcntl.return!, tp_syscall.fcntl.return
{ }
probe nd1_syscall.fcntl.return = __nd1_syscall.fcntl.return,
kprobe.function("compat_sys_fcntl").return ?,
kprobe.function("compat_sys_fcntl64").return ?
{
@_SYSCALL_FCNTL_NAME
@SYSC_RETVALSTR(returnval())
}
probe __nd1_syscall.fcntl.return = kprobe.function("sys_fcntl64").return ?,
kprobe.function("sys_fcntl").return ?
{
@__syscall_gate_compat_simple
}
/* kernel 4.17+ */
probe nd2_syscall.fcntl.return = kprobe.function(@arch_syscall_prefix "sys_fcntl").return ?,
kprobe.function(@arch_syscall_prefix "compat_sys_fcntl64").return ?
{
@_SYSCALL_FCNTL_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.fcntl.return = __tp_syscall.fcntl.return, __tp_syscall.fcntl64.return
{
__set_syscall_pt_regs($regs)
@_SYSCALL_FCNTL_NAME
@SYSC_RETVALSTR($ret)
}
probe __tp_syscall.fcntl.return = kernel.trace("sys_exit")
{
@__syscall_compat_gate(@const("__NR_fcntl"), @const("__NR_compat_fcntl"))
}
probe __tp_syscall.fcntl64.return = kernel.trace("sys_exit")
{
@__syscall_compat_gate(@const("__NR_fcntl64"), @const("__NR_compat_fcntl64"))
}
|
