Sindbad~EG File Manager

# fsetxattr __________________________________________________
/*
 * asmlinkage long
 * sys_fsetxattr(int fd,
 *               char __user *name,
 *               void __user *value,
 *               size_t size,
 *               int flags)
 */

@define _SYSCALL_FSETXATTR_NAME
%(
	name = "fsetxattr"
%)

@define _SYSCALL_FSETXATTR_ARGSTR
%(
	argstr = sprintf("%d, %s, %s, %u, %s", filedes, name_str, value_str,
	                 size, flags_str)
%)

@define _SYSCALL_FSETXATTR_REGARGS
%(
	filedes = int_arg(1)
# 'name2' should have been 'name_str'.  Deprecate the old name.
%(systemtap_v <= "1.4" %?
	name2 = user_string_quoted(pointer_arg(2))
	name2_unquoted = user_string_nofault(pointer_arg(2))
%)
	name_uaddr = pointer_arg(2)
	name_str = user_string_quoted(pointer_arg(2))
	name_str_unquoted = user_string_nofault(pointer_arg(2))
	value_uaddr = pointer_arg(3)
	size = ulong_arg(4)
	value_str = _stp_xattr_val_str(value_uaddr, size)
	flags = int_arg(5)
	flags_str = _stp_xattr_flags_str(flags)
%)

@define _SYSCALL_FSETXATTR_REGARGS_STORE
%(
        if (@probewrite(filedes))
          set_int_arg(1, filedes)

%(systemtap_v <= "1.4" %?
	if (@probewrite(name2_unquoted))
	  set_user_string_arg(pointer_arg(2), name2_unquoted)
%)

	if (@probewrite(name_uaddr))
	  set_pointer_arg(2, name_uaddr)

	if (@probewrite(name_str_unquoted))
	  set_user_string_arg(pointer_arg(2), name_str_unquoted)

	if (@probewrite(value_uaddr))
	  set_pointer_arg(3, value_uaddr)

	if (@probewrite(size))
	  set_ulong_arg(4, size)

	if (@probewrite(flags))
	  set_int_arg(5, flags)
%)

probe syscall.fsetxattr = dw_syscall.fsetxattr !, nd_syscall.fsetxattr ? {}
probe syscall.fsetxattr.return = dw_syscall.fsetxattr.return !, nd_syscall.fsetxattr.return ? {}

# dw_fsetxattr _____________________________________________________

probe dw_syscall.fsetxattr = kernel.function("sys_fsetxattr").call
{
	@_SYSCALL_FSETXATTR_NAME
	filedes = __int32($fd)
# 'name2' should have been 'name_str'.  Deprecate the old name.
%(systemtap_v <= "1.4" %?
	name2 = user_string_quoted($name)
%)
	name_uaddr = $name
	name_str = user_string_quoted($name)
	value_uaddr = $value
	size = __ulong($size)
	value_str = _stp_xattr_val_str($value, size)
	flags = __int32($flags)
	flags_str = _stp_xattr_flags_str(__int32($flags))
	@_SYSCALL_FSETXATTR_ARGSTR
}
probe dw_syscall.fsetxattr.return = kernel.function("sys_fsetxattr").return
{
	@_SYSCALL_FSETXATTR_NAME
	@SYSC_RETVALSTR($return)
}

# nd_fsetxattr _____________________________________________________

probe nd_syscall.fsetxattr = nd1_syscall.fsetxattr!, nd2_syscall.fsetxattr!, tp_syscall.fsetxattr
  { }

probe nd1_syscall.fsetxattr = kprobe.function("sys_fsetxattr") ?
{
	@_SYSCALL_FSETXATTR_NAME
	asmlinkage()
	@_SYSCALL_FSETXATTR_REGARGS
	@_SYSCALL_FSETXATTR_ARGSTR
}

/* kernel 4.17+ */
probe nd2_syscall.fsetxattr = kprobe.function(@arch_syscall_prefix "sys_fsetxattr") ?
{
	__set_syscall_pt_regs(pointer_arg(1))
	@_SYSCALL_FSETXATTR_NAME
	@_SYSCALL_FSETXATTR_REGARGS
	@_SYSCALL_FSETXATTR_ARGSTR
},
{
        @_SYSCALL_FSETXATTR_REGARGS_STORE
}

/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.fsetxattr = kernel.trace("sys_enter")
{
	__set_syscall_pt_regs($regs)
	@__syscall_compat_gate(@const("__NR_fsetxattr"), @const("__NR_compat_fsetxattr"))
	@_SYSCALL_FSETXATTR_NAME
	@_SYSCALL_FSETXATTR_REGARGS
	@_SYSCALL_FSETXATTR_ARGSTR
},
{
        @_SYSCALL_FSETXATTR_REGARGS_STORE
}

probe nd_syscall.fsetxattr.return = nd1_syscall.fsetxattr.return!, nd2_syscall.fsetxattr.return!, tp_syscall.fsetxattr.return
  { }
  
probe nd1_syscall.fsetxattr.return = kprobe.function("sys_fsetxattr").return ?
{
	@_SYSCALL_FSETXATTR_NAME
	@SYSC_RETVALSTR(returnval())
}

/* kernel 4.17+ */
probe nd2_syscall.fsetxattr.return = kprobe.function(@arch_syscall_prefix "sys_fsetxattr").return ?
{
	@_SYSCALL_FSETXATTR_NAME
	@SYSC_RETVALSTR(returnval())
}
 
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.fsetxattr.return = kernel.trace("sys_exit")
{
	__set_syscall_pt_regs($regs)
	@__syscall_compat_gate(@const("__NR_fsetxattr"), @const("__NR_compat_fsetxattr"))
	@_SYSCALL_FSETXATTR_NAME
	@SYSC_RETVALSTR($ret)
}