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|
# shmget _____________________________________________________
#
# long sys_shmget (key_t key,
# size_t size,
# int shmflg)
#
@define _SYSCALL_SHMGET_NAME
%(
name = "shmget"
%)
@define _SYSCALL_SHMGET_ARGSTR
%(
argstr = sprintf("%d, %u, %s", key, size, shmflg_str)
%)
@define _SYSCALL_SHMGET_REGARGS
%(
key = int_arg(1)
size = ulong_arg(2)
shmflg = int_arg(3)
shmflg_str = _stp_shmget_flags_str(shmflg)
%)
@define _SYSCALL_SHMGET_REGARGS_STORE
%(
if (@probewrite(key))
set_int_arg(1, key)
if (@probewrite(size))
set_ulong_arg(2, size)
if (@probewrite(shmflg))
set_int_arg(3, shmflg)
%)
@define _SYSCALL_IPC_SHMGET_REGARGS
%(
key = int_arg(2)
size = ulong_arg(3)
shmflg = int_arg(4)
shmflg_str = _stp_shmget_flags_str(shmflg)
%)
@define _SYSCALL_IPC_SHMGET_REGARGS_STORE
%(
if (@probewrite(key))
set_int_arg(2, key)
if (@probewrite(size))
set_ulong_arg(3, size)
if (@probewrite(shmflg))
set_int_arg(4, shmflg)
%)
probe syscall.shmget = dw_syscall.shmget !, nd_syscall.shmget ? {}
probe syscall.shmget.return = dw_syscall.shmget.return !,
nd_syscall.shmget.return ? {}
# dw_shmget _____________________________________________________
probe dw_syscall.shmget = kernel.function("sys_shmget").call ?
{
@_SYSCALL_SHMGET_NAME
key = __int32($key)
size = __ulong($size)
shmflg = __int32($shmflg)
shmflg_str = _stp_shmget_flags_str(__int32($shmflg))
@_SYSCALL_SHMGET_ARGSTR
}
probe dw_syscall.shmget.return = kernel.function("sys_shmget").return ?
{
@_SYSCALL_SHMGET_NAME
@SYSC_RETVALSTR($return)
}
# nd_shmget _____________________________________________________
probe nd_syscall.shmget = nd1_syscall.shmget!, nd2_syscall.shmget!, tp_syscall.shmget
{ }
probe nd1_syscall.shmget = kprobe.function("sys_shmget") ?
{
@_SYSCALL_SHMGET_NAME
asmlinkage()
@_SYSCALL_SHMGET_REGARGS
@_SYSCALL_SHMGET_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.shmget = __nd2_syscall.shmget ?, __nd2_syscall.compat_ipc.shmget ?
{
@_SYSCALL_SHMGET_NAME
@_SYSCALL_SHMGET_ARGSTR
}
probe __nd2_syscall.shmget = kprobe.function(@arch_syscall_prefix "sys_shmget") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_SHMGET_REGARGS
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_SHMGET_REGARGS_STORE %)
}
probe __nd2_syscall.compat_ipc.shmget =
kprobe.function(@arch_syscall_prefix "compat_sys_ipc") ?
{
__set_syscall_pt_regs(pointer_arg(1))
if (int_arg(1) != @const("SHMGET")) next;
@_SYSCALL_IPC_SHMGET_REGARGS
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_IPC_SHMGET_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.shmget = __tp_syscall.shmget, __tp_syscall.compat_ipc.shmget
{
@_SYSCALL_SHMGET_NAME
@_SYSCALL_SHMGET_ARGSTR
}
probe __tp_syscall.shmget = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_gate(@const("__NR_shmget"))
@_SYSCALL_SHMGET_REGARGS
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_SHMGET_REGARGS_STORE %)
}
probe __tp_syscall.compat_ipc.shmget = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__compat_syscall_gate(@const("__NR_compat_ipc"))
if (int_arg(1) != @const("SHMGET")) next;
@_SYSCALL_IPC_SHMGET_REGARGS
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_IPC_SHMGET_REGARGS_STORE %)
}
probe nd_syscall.shmget.return = nd1_syscall.shmget.return!, nd2_syscall.shmget.return!, tp_syscall.shmget.return
{ }
probe nd1_syscall.shmget.return = kprobe.function("sys_shmget").return ?
{
@_SYSCALL_SHMGET_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.shmget.return =
kprobe.function(@arch_syscall_prefix "sys_shmget").return ?,
__nd2_syscall.compat_ipc.shmget.return ?
{
@_SYSCALL_SHMGET_NAME
@SYSC_RETVALSTR(returnval())
}
probe __nd2_syscall.compat_ipc.shmget.return =
kprobe.function(@arch_syscall_prefix "compat_sys_ipc").return ?
{
__set_syscall_pt_regs(@entry(pointer_arg(1)))
if (int_arg(1) != @const("SHMGET")) next;
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.shmget.return = __tp_syscall.shmget.return,
__tp_syscall.compat_ipc.shmget.return
{
@_SYSCALL_SHMGET_NAME
@SYSC_RETVALSTR($ret)
}
probe __tp_syscall.shmget.return = kernel.trace("sys_exit")
{
@__syscall_gate(@const("__NR_shmget"))
}
probe __tp_syscall.compat_ipc.shmget.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__compat_syscall_gate(@const("__NR_compat_ipc"))
if (int_arg(1) != @const("SHMGET")) next;
}
|
