# acl.m4 - check for access control list (ACL) primitives
-# serial 20
+# serial 22
-# Copyright (C) 2002, 2004-2015 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2004-2016 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
#include <sys/acl.h>
#include <errno.h>
]],
- [[if (!acl_get_file (".", ACL_TYPE_ACCESS) && errno == ENOENT)
- return 1;
- return 0;
+ [[acl_t acl = acl_get_file (".", ACL_TYPE_ACCESS);
+ return acl ? acl_free (acl) != 0 : errno == ENOENT;
]])],
[if test $cross_compiling = yes; then
gl_cv_func_working_acl_get_file="guessing yes"
[
AC_REQUIRE([gl_FUNC_ACL_ARG])
if test "$enable_acl" != no; then
- AC_CHECK_HEADERS([linux/xattr.h])
- AC_CHECK_HEADERS([sys/xattr.h],
- [AC_CHECK_FUNCS([getxattr])])
+ AC_CACHE_CHECK([for getxattr with XATTR_NAME_POSIX_ACL macros],
+ [gl_cv_getxattr_with_posix_acls],
+ [gl_cv_getxattr_with_posix_acls=no
+ AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <sys/types.h>
+ #include <sys/xattr.h>
+ #include <linux/xattr.h>
+ ]],
+ [[ssize_t a = getxattr (".", XATTR_NAME_POSIX_ACL_ACCESS, 0, 0);
+ ssize_t b = getxattr (".", XATTR_NAME_POSIX_ACL_DEFAULT, 0, 0);
+ return a < 0 || b < 0;
+ ]])],
+ [gl_cv_getxattr_with_posix_acls=yes])])
fi
- if test "$ac_cv_header_sys_xattr_h,$ac_cv_func_getxattr" = yes,yes; then
+ if test "$gl_cv_getxattr_with_posix_acls" = yes; then
LIB_HAS_ACL=
+ AC_DEFINE([GETXATTR_WITH_POSIX_ACLS], 1,
+ [Define to 1 if getxattr works with XATTR_NAME_POSIX_ACL_ACCESS
+ and XATTR_NAME_POSIX_ACL_DEFAULT.])
else
dnl Set gl_need_lib_has_acl to a nonempty value, so that any
dnl later gl_FUNC_ACL call will set LIB_HAS_ACL=$LIB_ACL.