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# acl.m4 - check for access control list (ACL) primitives
# Copyright (C) 2002, 2004, 2005, 2006, 2007 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.
# Written by Paul Eggert and Jim Meyering.
AC_DEFUN([AC_FUNC_ACL],
[
AC_LIBOBJ([acl])
AC_LIBOBJ([file-has-acl])
dnl Prerequisites of lib/acl.c.
AC_CHECK_HEADERS(sys/acl.h)
AC_CHECK_FUNCS(acl)
ac_save_LIBS="$LIBS"
AC_SEARCH_LIBS(acl_get_file, acl,
[test "$ac_cv_search_acl_get_file" = "none required" ||
LIB_ACL=$ac_cv_search_acl_get_file])
AC_SUBST(LIB_ACL)
AC_CHECK_HEADERS(acl/libacl.h)
AC_CHECK_FUNCS(acl_get_file acl_get_fd acl_set_file acl_set_fd \
acl_free acl_from_mode acl_from_text \
acl_delete_def_file acl_extended_file)
if test $ac_cv_header_sys_acl_h = yes; then
use_acl=1
if test $ac_cv_func_acl_get_file = yes; then
# If we detect the acl_get_file bug, disable ACL support altogether.
gl_ACL_GET_FILE( , [use_acl=0])
fi
else
use_acl=0
fi
if test $use_acl = 1 &&
test $ac_cv_func_acl_get_file = yes &&
test $ac_cv_func_acl_free = yes; then
AC_REPLACE_FUNCS([acl_entries])
fi
LIBS="$ac_save_LIBS"
if test $use_acl = 1; then
ac_save_LIBS="$LIBS"
AC_SEARCH_LIBS([acl_trivial], [sec],
[AC_DEFINE([HAVE_ACL_TRIVIAL], 1,
[Define to 1 if you have the `acl_trivial' function.])
test "$ac_cv_search_acl_trivial" = "none required" ||
LIB_ACL_TRIVIAL="$ac_cv_search_acl_trivial"])
AC_SUBST([LIB_ACL_TRIVIAL])
LIBS="$ac_save_LIBS"
fi
AC_DEFINE_UNQUOTED(USE_ACL, $use_acl,
[Define if you want access control list support.])
])
# gl_ACL_GET_FILE(IF-WORKS, IF-NOT)
# -------------------------------------
# If `acl_get_file' works (does not have a particular bug),
# run IF-WORKS, otherwise, IF-NOT.
# This tests for a Darwin 8.7.0 bug, whereby acl_get_file returns NULL,
# but sets errno = ENOENT for an existing file or directory.
AC_DEFUN([gl_ACL_GET_FILE],
[
AC_CACHE_CHECK([for working acl_get_file], gl_cv_func_working_acl_get_file,
[AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
[[#include <sys/types.h>
#include <sys/acl.h>
#include <errno.h>
]],
[[return !! (!acl_get_file (".", ACL_TYPE_ACCESS)
&& errno == ENOENT);]])],
[gl_cv_func_working_acl_get_file=yes],
[gl_cv_func_working_acl_get_file=no],
[gl_cv_func_working_acl_get_file=cross-compiling])])
AS_IF([test $gl_cv_func_working_acl_get_file = yes], [$1], [$2])
])
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