1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
# acl.m4 - check for access control list (ACL) primitives
# serial 22
# Copyright (C) 2002, 2004-2018 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([gl_FUNC_ACL_ARG],
[
gl_need_lib_has_acl=
AC_ARG_ENABLE([acl],
AS_HELP_STRING([--disable-acl], [do not support ACLs]),
, [enable_acl=auto])
])
AC_DEFUN([gl_FUNC_ACL],
[
AC_REQUIRE([gl_FUNC_ACL_ARG])
AC_CHECK_FUNCS_ONCE([fchmod])
LIB_ACL=
use_acl=0
if test "$enable_acl" != no; then
dnl On all platforms, the ACL related API is declared in <sys/acl.h>.
AC_CHECK_HEADERS([sys/acl.h])
if test $ac_cv_header_sys_acl_h = yes; then
ac_save_LIBS=$LIBS
dnl Test for POSIX-draft-like API (GNU/Linux, FreeBSD, Mac OS X,
dnl IRIX, Tru64). -lacl is needed on GNU/Linux, -lpacl on OSF/1.
if test $use_acl = 0; then
AC_SEARCH_LIBS([acl_get_file], [acl pacl],
[if test "$ac_cv_search_acl_get_file" != "none required"; then
LIB_ACL=$ac_cv_search_acl_get_file
fi
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 \
acl_delete_fd_np acl_delete_file_np \
acl_copy_ext_native acl_create_entry_np \
acl_to_short_text acl_free_text])
# If the acl_get_file bug is detected, don't enable the ACL support.
gl_ACL_GET_FILE([use_acl=1], [])
if test $use_acl = 1; then
dnl On GNU/Linux, an additional API is declared in <acl/libacl.h>.
AC_CHECK_HEADERS([acl/libacl.h])
AC_REPLACE_FUNCS([acl_entries])
AC_CACHE_CHECK([for ACL_FIRST_ENTRY],
[gl_cv_acl_ACL_FIRST_ENTRY],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
[[#include <sys/types.h>
#include <sys/acl.h>
int type = ACL_FIRST_ENTRY;]])],
[gl_cv_acl_ACL_FIRST_ENTRY=yes],
[gl_cv_acl_ACL_FIRST_ENTRY=no])])
if test $gl_cv_acl_ACL_FIRST_ENTRY = yes; then
AC_DEFINE([HAVE_ACL_FIRST_ENTRY], [1],
[Define to 1 if the constant ACL_FIRST_ENTRY exists.])
fi
dnl On Mac OS X, other types of ACLs are supported.
AC_CACHE_CHECK([for ACL_TYPE_EXTENDED],
[gl_cv_acl_ACL_TYPE_EXTENDED],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
[[#include <sys/types.h>
#include <sys/acl.h>
int type = ACL_TYPE_EXTENDED;]])],
[gl_cv_acl_ACL_TYPE_EXTENDED=yes],
[gl_cv_acl_ACL_TYPE_EXTENDED=no])])
if test $gl_cv_acl_ACL_TYPE_EXTENDED = yes; then
AC_DEFINE([HAVE_ACL_TYPE_EXTENDED], [1],
[Define to 1 if the ACL type ACL_TYPE_EXTENDED exists.])
fi
else
LIB_ACL=
fi
])
fi
dnl Test for Solaris API (Solaris, Cygwin).
if test $use_acl = 0; then
AC_CHECK_FUNCS([facl])
if test $ac_cv_func_facl = yes; then
AC_SEARCH_LIBS([acl_trivial], [sec],
[if test "$ac_cv_search_acl_trivial" != "none required"; then
LIB_ACL=$ac_cv_search_acl_trivial
fi
])
AC_CHECK_FUNCS([acl_trivial])
use_acl=1
fi
fi
dnl Test for HP-UX API.
if test $use_acl = 0; then
AC_CHECK_FUNCS([getacl])
if test $ac_cv_func_getacl = yes; then
use_acl=1
fi
dnl Test for HP-UX 11.11 API.
AC_CHECK_HEADERS([aclv.h], [], [], [#include <sys/types.h>])
fi
dnl Test for AIX API (AIX 5.3 or newer).
if test $use_acl = 0; then
AC_CHECK_FUNCS([aclx_get])
if test $ac_cv_func_aclx_get = yes; then
use_acl=1
fi
fi
dnl Test for older AIX API.
if test $use_acl = 0 || test "$ac_cv_func_aclx_get" = yes; then
AC_CHECK_FUNCS([statacl])
if test $ac_cv_func_statacl = yes; then
use_acl=1
fi
fi
dnl Test for NonStop Kernel API.
if test $use_acl = 0; then
AC_CHECK_FUNCS([aclsort])
if test $ac_cv_func_aclsort = yes; then
use_acl=1
fi
fi
LIBS=$ac_save_LIBS
fi
if test "$enable_acl$use_acl" = yes0; then
AC_MSG_ERROR([ACLs enabled but support not detected])
elif test "$enable_acl$use_acl" = auto0; then
AC_MSG_WARN([libacl development library was not found or not usable.])
AC_MSG_WARN([AC_PACKAGE_NAME will be built without ACL support.])
fi
fi
test $gl_need_lib_has_acl && LIB_HAS_ACL=$LIB_ACL
AC_SUBST([LIB_ACL])
AC_DEFINE_UNQUOTED([USE_ACL], [$use_acl],
[Define to nonzero if you want access control list support.])
USE_ACL=$use_acl
AC_SUBST([USE_ACL])
])
# 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.
# When building natively, test for a Darwin 8.7.0 bug, whereby acl_get_file
# returns NULL, but sets errno = ENOENT for an existing file or directory.
# When cross-compiling, assume that this old bug no longer applies.
AC_DEFUN([gl_ACL_GET_FILE],
[
AC_CACHE_CHECK([for working acl_get_file], [gl_cv_func_working_acl_get_file],
[gl_cv_func_working_acl_get_file=no
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <sys/types.h>
#include <sys/acl.h>
#include <errno.h>
]],
[[acl_t acl = acl_get_file (".", ACL_TYPE_ACCESS);
return acl ? acl_free (acl) != 0 : errno == ENOENT;
]])],
[if test $cross_compiling = yes; then
gl_cv_func_working_acl_get_file="guessing yes"
elif ./conftest$ac_exeext; then
gl_cv_func_working_acl_get_file=yes
fi])])
AS_IF([test "$gl_cv_func_working_acl_get_file" != no], [$1], [$2])
])
# On GNU/Linux, testing if a file has an acl can be done with the getxattr
# syscall which doesn't require linking against additional libraries.
AC_DEFUN([gl_FILE_HAS_ACL],
[
AC_REQUIRE([gl_FUNC_ACL_ARG])
if test "$enable_acl" != no; then
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 "$gl_cv_getxattr_with_posix_acls" = yes; then
LIB_HAS_ACL=
AC_DEFINE([GETXATTR_WITH_POSIX_ACLS], 1,
[Define to 1 if getxattr works with XATTR_NAME_POSIX_ACL_ACCESS
and XATTR_NAME_POSIX_ACL_DEFAULT.])
else
dnl Set gl_need_lib_has_acl to a nonempty value, so that any
dnl later gl_FUNC_ACL call will set LIB_HAS_ACL=$LIB_ACL.
gl_need_lib_has_acl=1
LIB_HAS_ACL=$LIB_ACL
fi
AC_SUBST([LIB_HAS_ACL])
])
|