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|
# chown16 ___________________________________________________
# long sys_chown16(const char __user * filename, old_uid_t user,
# old_gid_t group)
#
@define _SYSCALL_CHOWN16_NAME
%(
name = "chown16"
%)
@define _SYSCALL_CHOWN16_ARGSTR
%(
argstr = sprintf("%s, %d, %d", path, owner, group)
%)
@define _SYSCALL_CHOWN16_REGARGS
%(
path = user_string_quoted(pointer_arg(1))
path_unquoted = user_string_nofault(pointer_arg(1))
owner = __short(uint_arg(2))
group = __short(uint_arg(3))
%)
@define _SYSCALL_CHOWN16_REGARGS_STORE
%(
if (@probewrite(path_unquoted))
set_user_string_arg(pointer_arg(1), path_unquoted)
if (@probewrite(owner))
set_uint_arg(2, __short(owner))
if (@probewrite(group))
set_uint_arg(3, __short(group))
%)
probe syscall.chown16 = dw_syscall.chown16 !, nd_syscall.chown16 ? {}
probe syscall.chown16.return = dw_syscall.chown16.return !, nd_syscall.chown16.return ? {}
# dw_chown16 _____________________________________________________
probe dw_syscall.chown16 = kernel.function("sys_chown16").call ?
{
@_SYSCALL_CHOWN16_NAME
path = user_string_quoted($filename)
owner = __short($user)
group = __short($group)
@_SYSCALL_CHOWN16_ARGSTR
}
probe dw_syscall.chown16.return = kernel.function("sys_chown16").return ?
{
@_SYSCALL_CHOWN16_NAME
@SYSC_RETVALSTR($return)
}
# nd_chown16 _____________________________________________________
probe nd_syscall.chown16 = nd1_syscall.chown16!, nd2_syscall.chown16!, tp_syscall.chown16
{ }
probe nd1_syscall.chown16 = kprobe.function("sys_chown16") ?
{
@_SYSCALL_CHOWN16_NAME
asmlinkage()
@_SYSCALL_CHOWN16_REGARGS
@_SYSCALL_CHOWN16_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.chown16 = kprobe.function(@arch_syscall_prefix "sys_chown16") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_CHOWN16_NAME
@_SYSCALL_CHOWN16_REGARGS
@_SYSCALL_CHOWN16_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_CHOWN16_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.chown16 = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
%( CONFIG_64BIT == "y" %?
@__compat_syscall_gate(@const("__NR_compat_chown"))
%:
@__syscall_gate(@const("__NR_chown"))
%)
@_SYSCALL_CHOWN16_NAME
@_SYSCALL_CHOWN16_REGARGS
@_SYSCALL_CHOWN16_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_CHOWN16_REGARGS_STORE %)
}
probe nd_syscall.chown16.return = nd1_syscall.chown16.return!, nd2_syscall.chown16.return!, tp_syscall.chown16.return
{ }
probe nd1_syscall.chown16.return = kprobe.function("sys_chown16").return ?
{
@_SYSCALL_CHOWN16_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.chown16.return = kprobe.function(@arch_syscall_prefix "sys_chown16").return ?
{
@_SYSCALL_CHOWN16_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.chown16.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
%( CONFIG_64BIT == "y" %?
@__compat_syscall_gate(@const("__NR_compat_chown"))
%:
@__syscall_gate(@const("__NR_chown"))
%)
@_SYSCALL_CHOWN16_NAME
@SYSC_RETVALSTR($ret)
}
|
