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# mkdirat ____________________________________________________
# long sys_mkdirat(int dfd, const char __user *pathname, int mode)
# new function with 2.6.16
@define _SYSCALL_MKDIRAT_NAME
%(
name = "mkdirat"
%)
@define _SYSCALL_MKDIRAT_ARGSTR
%(
argstr = sprintf("%s, %s, %#o", dirfd_str, pathname, mode)
%)
@define _SYSCALL_MKDIRAT_REGARGS
%(
dirfd = int_arg(1)
dirfd_str = _dfd_str(dirfd)
pathname = user_string_quoted(pointer_arg(2))
pathname_unquoted = user_string_nofault(pointer_arg(2))
mode = uint_arg(3)
%)
@define _SYSCALL_MKDIRAT_REGARGS_STORE
%(
if (@probewrite(dirfd))
set_int_arg(1, dirfd)
if (@probewrite(pathname_unquoted))
set_user_string_arg(pointer_arg(2), pathname_unquoted)
if (@probewrite(mode))
set_uint_arg(3, mode)
%)
probe syscall.mkdirat = dw_syscall.mkdirat !, nd_syscall.mkdirat ? {}
probe syscall.mkdirat.return = dw_syscall.mkdirat.return !,
nd_syscall.mkdirat.return ? {}
# dw_mkdirat _____________________________________________________
probe dw_syscall.mkdirat = kernel.function("sys_mkdirat").call ?
{
@__syscall_compat_gate(@const("__NR_mkdirat"), @const("__NR_compat_mkdirat"))
@_SYSCALL_MKDIRAT_NAME
dirfd = __int32($dfd)
dirfd_str = _dfd_str(__int32($dfd))
pathname = user_string_quoted($pathname)
mode = __uint32($mode)
@_SYSCALL_MKDIRAT_ARGSTR
}
probe dw_syscall.mkdirat.return = kernel.function("sys_mkdirat").return ?
{
@__syscall_compat_gate(@const("__NR_mkdirat"), @const("__NR_compat_mkdirat"))
@_SYSCALL_MKDIRAT_NAME
@SYSC_RETVALSTR($return)
}
# nd_mkdirat _____________________________________________________
probe nd_syscall.mkdirat = nd1_syscall.mkdirat!, nd2_syscall.mkdirat!, tp_syscall.mkdirat
{ }
probe nd1_syscall.mkdirat = kprobe.function("sys_mkdirat") ?
{
@__syscall_compat_gate(@const("__NR_mkdirat"), @const("__NR_compat_mkdirat"))
@_SYSCALL_MKDIRAT_NAME
asmlinkage()
@_SYSCALL_MKDIRAT_REGARGS
@_SYSCALL_MKDIRAT_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.mkdirat = kprobe.function(@arch_syscall_prefix "sys_mkdirat")
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_MKDIRAT_NAME
@_SYSCALL_MKDIRAT_REGARGS
@_SYSCALL_MKDIRAT_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_MKDIRAT_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.mkdirat = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_mkdirat"), @const("__NR_compat_mkdirat"))
@_SYSCALL_MKDIRAT_NAME
@_SYSCALL_MKDIRAT_REGARGS
@_SYSCALL_MKDIRAT_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_MKDIRAT_REGARGS_STORE %)
}
probe nd_syscall.mkdirat.return = nd1_syscall.mkdirat.return!, nd2_syscall.mkdirat.return!, tp_syscall.mkdirat.return
{ }
probe nd1_syscall.mkdirat.return = kprobe.function("sys_mkdirat").return ?
{
@__syscall_compat_gate(@const("__NR_mkdirat"), @const("__NR_compat_mkdirat"))
@_SYSCALL_MKDIRAT_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.mkdirat.return = kprobe.function(@arch_syscall_prefix "sys_mkdirat").return
{
@_SYSCALL_MKDIRAT_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.mkdirat.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_mkdirat"), @const("__NR_compat_mkdirat"))
@_SYSCALL_MKDIRAT_NAME
@SYSC_RETVALSTR($ret)
}
|
