1 # acl.m4 - check for access control list (ACL) primitives
4 # Copyright (C) 2002, 2004-2015 Free Software Foundation, Inc.
5 # This file is free software; the Free Software Foundation
6 # gives unlimited permission to copy and/or distribute it,
7 # with or without modifications, as long as this notice is preserved.
9 # Written by Paul Eggert and Jim Meyering.
11 AC_DEFUN([gl_FUNC_ACL],
14 AS_HELP_STRING([--disable-acl], [do not support ACLs]),
17 AC_CHECK_FUNCS_ONCE([fchmod])
20 if test "x$enable_acl" != "xno"; then
21 dnl On all platforms, the ACL related API is declared in <sys/acl.h>.
22 AC_CHECK_HEADERS([sys/acl.h])
23 if test $ac_cv_header_sys_acl_h = yes; then
26 dnl Test for POSIX-draft-like API (Linux, FreeBSD, Mac OS X, IRIX, Tru64).
27 dnl -lacl is needed on Linux, -lpacl is needed on OSF/1.
28 if test $use_acl = 0; then
29 AC_SEARCH_LIBS([acl_get_file], [acl pacl],
30 [if test "$ac_cv_search_acl_get_file" != "none required"; then
31 LIB_ACL=$ac_cv_search_acl_get_file
34 [acl_get_file acl_get_fd acl_set_file acl_set_fd \
35 acl_free acl_from_mode acl_from_text \
36 acl_delete_def_file acl_extended_file \
37 acl_delete_fd_np acl_delete_file_np \
38 acl_copy_ext_native acl_create_entry_np \
39 acl_to_short_text acl_free_text])
40 # If the acl_get_file bug is detected, don't enable the ACL support.
41 gl_ACL_GET_FILE([use_acl=1], [])
42 if test $use_acl = 1; then
43 dnl On Linux, additional API is declared in <acl/libacl.h>.
44 AC_CHECK_HEADERS([acl/libacl.h])
45 AC_REPLACE_FUNCS([acl_entries])
46 AC_CACHE_CHECK([for ACL_FIRST_ENTRY],
47 [gl_cv_acl_ACL_FIRST_ENTRY],
48 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
49 [[#include <sys/types.h>
51 int type = ACL_FIRST_ENTRY;]])],
52 [gl_cv_acl_ACL_FIRST_ENTRY=yes],
53 [gl_cv_acl_ACL_FIRST_ENTRY=no])])
54 if test $gl_cv_acl_ACL_FIRST_ENTRY = yes; then
55 AC_DEFINE([HAVE_ACL_FIRST_ENTRY], [1],
56 [Define to 1 if the constant ACL_FIRST_ENTRY exists.])
58 dnl On Mac OS X, other types of ACLs are supported.
59 AC_CACHE_CHECK([for ACL_TYPE_EXTENDED],
60 [gl_cv_acl_ACL_TYPE_EXTENDED],
61 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
62 [[#include <sys/types.h>
64 int type = ACL_TYPE_EXTENDED;]])],
65 [gl_cv_acl_ACL_TYPE_EXTENDED=yes],
66 [gl_cv_acl_ACL_TYPE_EXTENDED=no])])
67 if test $gl_cv_acl_ACL_TYPE_EXTENDED = yes; then
68 AC_DEFINE([HAVE_ACL_TYPE_EXTENDED], [1],
69 [Define to 1 if the ACL type ACL_TYPE_EXTENDED exists.])
77 dnl Test for Solaris API (Solaris, Cygwin).
78 if test $use_acl = 0; then
79 AC_CHECK_FUNCS([facl])
80 if test $ac_cv_func_facl = yes; then
81 AC_SEARCH_LIBS([acl_trivial], [sec],
82 [if test "$ac_cv_search_acl_trivial" != "none required"; then
83 LIB_ACL=$ac_cv_search_acl_trivial
86 AC_CHECK_FUNCS([acl_trivial])
91 dnl Test for HP-UX API.
92 if test $use_acl = 0; then
93 AC_CHECK_FUNCS([getacl])
94 if test $ac_cv_func_getacl = yes; then
97 dnl Test for HP-UX 11.11 API.
98 AC_CHECK_HEADERS([aclv.h], [], [], [#include <sys/types.h>])
101 dnl Test for AIX API (AIX 5.3 or newer).
102 if test $use_acl = 0; then
103 AC_CHECK_FUNCS([aclx_get])
104 if test $ac_cv_func_aclx_get = yes; then
109 dnl Test for older AIX API.
110 if test $use_acl = 0 || test "$ac_cv_func_aclx_get" = yes; then
111 AC_CHECK_FUNCS([statacl])
112 if test $ac_cv_func_statacl = yes; then
117 dnl Test for NonStop Kernel API.
118 if test $use_acl = 0; then
119 AC_CHECK_FUNCS([aclsort])
120 if test $ac_cv_func_aclsort = yes; then
127 if test "x$enable_acl$use_acl" = "xyes0"; then
128 AC_MSG_ERROR([ACLs enabled but support not detected])
129 elif test "x$enable_acl$use_acl" = "xauto0"; then
130 AC_MSG_WARN([libacl development library was not found or not usable.])
131 AC_MSG_WARN([AC_PACKAGE_NAME will be built without ACL support.])
135 AC_DEFINE_UNQUOTED([USE_ACL], [$use_acl],
136 [Define to nonzero if you want access control list support.])
141 # gl_ACL_GET_FILE(IF-WORKS, IF-NOT)
142 # -------------------------------------
143 # If 'acl_get_file' works (does not have a particular bug),
144 # run IF-WORKS, otherwise, IF-NOT.
145 # When building natively, test for a Darwin 8.7.0 bug, whereby acl_get_file
146 # returns NULL, but sets errno = ENOENT for an existing file or directory.
147 # When cross-compiling, assume that this old bug no longer applies.
148 AC_DEFUN([gl_ACL_GET_FILE],
150 AC_CACHE_CHECK([for working acl_get_file], [gl_cv_func_working_acl_get_file],
151 [gl_cv_func_working_acl_get_file=no
154 [[#include <sys/types.h>
158 [[if (!acl_get_file (".", ACL_TYPE_ACCESS) && errno == ENOENT)
162 [if test $cross_compiling = yes; then
163 gl_cv_func_working_acl_get_file="guessing yes"
164 elif ./conftest$ac_exeext; then
165 gl_cv_func_working_acl_get_file=yes
167 AS_IF([test "$gl_cv_func_working_acl_get_file" != no], [$1], [$2])