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|
# lremovexattr _______________________________________________
# long sys_lremovexattr(char __user *path, char __user *name)
#
@define _SYSCALL_LREMOVEXATTR_NAME
%(
name = "lremovexattr"
%)
@define _SYSCALL_LREMOVEXATTR_ARGSTR
%(
argstr = sprintf("%s, %s", path, name_str)
%)
@define _SYSCALL_LREMOVEXATTR_REGARGS
%(
path_uaddr = pointer_arg(1)
path = user_string_quoted(path_uaddr)
path_unquoted = user_string_nofault(pointer_arg(1))
name_uaddr = pointer_arg(2)
# 'name2' should have been 'name_str'. Deprecate the old name.
%(systemtap_v <= "1.4" %?
name2 = user_string_quoted(name_uaddr)
name2_unquoted = user_string_nofault(pointer_arg(2))
%)
name_str = user_string_quoted(name_uaddr)
name_str_unquoted = user_string_nofault(pointer_arg(2))
%)
@define _SYSCALL_LREMOVEXATTR_REGARGS_STORE
%(
if (@probewrite(path_uaddr))
set_pointer_arg(1, path_uaddr)
if (@probewrite(path_unquoted))
set_user_string_arg(pointer_arg(1), path_unquoted)
if (@probewrite(name_uaddr))
set_pointer_arg(2, name_uaddr)
%(systemtap_v <= "1.4" %?
if (@probewrite(name2_unquoted))
set_user_string_arg(pointer_arg(2), name2_unquoted)
%)
if (@probewrite(name_str_unquoted))
set_user_string_arg(pointer_arg(2), name_str_unquoted)
%)
probe syscall.lremovexattr = dw_syscall.lremovexattr !, nd_syscall.lremovexattr ? {}
probe syscall.lremovexattr.return = dw_syscall.lremovexattr.return !, nd_syscall.lremovexattr.return ? {}
# dw_lremovexattr _____________________________________________________
probe dw_syscall.lremovexattr = kernel.function("sys_lremovexattr").call
{
@_SYSCALL_LREMOVEXATTR_NAME
name_uaddr = $name
# 'name2' should have been 'name_str'. Deprecate the old name.
%(systemtap_v <= "1.4" %?
name2 = user_string_quoted($name)
%)
name_str = user_string_quoted($name)
path_uaddr = @choose_defined($pathname, $path)
path = user_string_quoted(@choose_defined($pathname, $path))
@_SYSCALL_LREMOVEXATTR_ARGSTR
}
probe dw_syscall.lremovexattr.return = kernel.function("sys_lremovexattr").return
{
@_SYSCALL_LREMOVEXATTR_NAME
@SYSC_RETVALSTR($return)
}
# nd_lremovexattr _____________________________________________________
probe nd_syscall.lremovexattr = nd1_syscall.lremovexattr!, nd2_syscall.lremovexattr!, tp_syscall.lremovexattr
{ }
probe nd1_syscall.lremovexattr = kprobe.function("sys_lremovexattr") ?
{
@_SYSCALL_LREMOVEXATTR_NAME
asmlinkage()
@_SYSCALL_LREMOVEXATTR_REGARGS
@_SYSCALL_LREMOVEXATTR_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.lremovexattr = kprobe.function(@arch_syscall_prefix "sys_lremovexattr") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_LREMOVEXATTR_NAME
@_SYSCALL_LREMOVEXATTR_REGARGS
@_SYSCALL_LREMOVEXATTR_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_LREMOVEXATTR_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.lremovexattr = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_lremovexattr"), @const("__NR_compat_lremovexattr"))
@_SYSCALL_LREMOVEXATTR_NAME
@_SYSCALL_LREMOVEXATTR_REGARGS
@_SYSCALL_LREMOVEXATTR_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_LREMOVEXATTR_REGARGS_STORE %)
}
probe nd_syscall.lremovexattr.return = nd1_syscall.lremovexattr.return!, nd2_syscall.lremovexattr.return!, tp_syscall.lremovexattr.return
{ }
probe nd1_syscall.lremovexattr.return = kprobe.function("sys_lremovexattr").return ?
{
@_SYSCALL_LREMOVEXATTR_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.lremovexattr.return = kprobe.function(@arch_syscall_prefix "sys_lremovexattr").return ?
{
@_SYSCALL_LREMOVEXATTR_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.lremovexattr.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_lremovexattr"), @const("__NR_compat_lremovexattr"))
@_SYSCALL_LREMOVEXATTR_NAME
@SYSC_RETVALSTR($ret)
}
|
