[mirror_zfs.git] / config / kernel-acl.m4

dnl #
dnl # Check if posix_acl_release can be used from a ZFS_META_LICENSED
dnl # module.  The is_owner_or_cap macro was replaced by
dnl # inode_owner_or_capable
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_POSIX_ACL_RELEASE], [
	ZFS_LINUX_TEST_SRC([posix_acl_release], [
		#include <linux/cred.h>
		#include <linux/fs.h>
		#include <linux/posix_acl.h>
	], [
		struct posix_acl *tmp = posix_acl_alloc(1, 0);
		posix_acl_release(tmp);
	], [], [$ZFS_META_LICENSE])
])

AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_RELEASE], [
	AC_MSG_CHECKING([whether posix_acl_release() is available])
	ZFS_LINUX_TEST_RESULT([posix_acl_release], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_POSIX_ACL_RELEASE, 1,
		    [posix_acl_release() is available])

		AC_MSG_CHECKING([whether posix_acl_release() is GPL-only])
		ZFS_LINUX_TEST_RESULT([posix_acl_release_license], [
			AC_MSG_RESULT(no)
		],[
			AC_MSG_RESULT(yes)
			AC_DEFINE(HAVE_POSIX_ACL_RELEASE_GPL_ONLY, 1,
			    [posix_acl_release() is GPL-only])
		])
	],[
		AC_MSG_RESULT(no)
	])
])

dnl #
dnl # 3.14 API change,
dnl # set_cached_acl() and forget_cached_acl() changed from inline to
dnl # EXPORT_SYMBOL. In the former case, they may not be usable because of
dnl # posix_acl_release. In the latter case, we can always use them.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_SET_CACHED_ACL_USABLE], [
	ZFS_LINUX_TEST_SRC([set_cached_acl], [
		#include <linux/cred.h>
		#include <linux/fs.h>
		#include <linux/posix_acl.h>
	], [
		struct inode *ip = NULL;
		struct posix_acl *acl = posix_acl_alloc(1, 0);
		set_cached_acl(ip, ACL_TYPE_ACCESS, acl);
		forget_cached_acl(ip, ACL_TYPE_ACCESS);
	], [], [$ZFS_META_LICENSE])
])

AC_DEFUN([ZFS_AC_KERNEL_SET_CACHED_ACL_USABLE], [
	AC_MSG_CHECKING([whether set_cached_acl() is usable])
	ZFS_LINUX_TEST_RESULT([set_cached_acl_license], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_SET_CACHED_ACL_USABLE, 1,
		    [set_cached_acl() is usable])
	],[
		AC_MSG_RESULT(no)
	])
])

dnl #
dnl # 3.1 API change,
dnl # posix_acl_chmod() was added as the preferred interface.
dnl #
dnl # 3.14 API change,
dnl # posix_acl_chmod() was changed to __posix_acl_chmod()
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_POSIX_ACL_CHMOD], [
	ZFS_LINUX_TEST_SRC([posix_acl_chmod], [
		#include <linux/fs.h>
		#include <linux/posix_acl.h>
	],[
		posix_acl_chmod(NULL, 0, 0)
	])

	ZFS_LINUX_TEST_SRC([__posix_acl_chmod], [
		#include <linux/fs.h>
		#include <linux/posix_acl.h>
	],[
		__posix_acl_chmod(NULL, 0, 0)
	])
])

AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_CHMOD], [
	AC_MSG_CHECKING([whether __posix_acl_chmod exists])
	ZFS_LINUX_TEST_RESULT([__posix_acl_chmod], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE___POSIX_ACL_CHMOD, 1,
		    [__posix_acl_chmod() exists])
	],[
		AC_MSG_RESULT(no)

		AC_MSG_CHECKING([whether posix_acl_chmod exists])
		ZFS_LINUX_TEST_RESULT([posix_acl_chmod], [
			AC_MSG_RESULT(yes)
			AC_DEFINE(HAVE_POSIX_ACL_CHMOD, 1,
			    [posix_acl_chmod() exists])
		],[
			ZFS_LINUX_TEST_ERROR([posix_acl_chmod()])
		])
	])
])

dnl #
dnl # 3.1 API change,
dnl # posix_acl_equiv_mode now wants an umode_t instead of a mode_t
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T], [
	ZFS_LINUX_TEST_SRC([posix_acl_equiv_mode], [
		#include <linux/fs.h>
		#include <linux/posix_acl.h>
	],[
		umode_t tmp;
		posix_acl_equiv_mode(NULL, &tmp);
	])
])

AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T], [
	AC_MSG_CHECKING([whether posix_acl_equiv_mode() wants umode_t])
	ZFS_LINUX_TEST_RESULT([posix_acl_equiv_mode], [
		AC_MSG_RESULT(yes)
	],[
		ZFS_LINUX_TEST_ERROR([posix_acl_equiv_mode()])
	])
])

dnl #
dnl # 4.8 API change,
dnl # The function posix_acl_valid now must be passed a namespace.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_POSIX_ACL_VALID_WITH_NS], [
	ZFS_LINUX_TEST_SRC([posix_acl_valid_with_ns], [
		#include <linux/fs.h>
		#include <linux/posix_acl.h>
	],[
		struct user_namespace *user_ns = NULL;
		const struct posix_acl *acl = NULL;
		int error;

		error = posix_acl_valid(user_ns, acl);
	])
])

AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_VALID_WITH_NS], [
	AC_MSG_CHECKING([whether posix_acl_valid() wants user namespace])
	ZFS_LINUX_TEST_RESULT([posix_acl_valid_with_ns], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_POSIX_ACL_VALID_WITH_NS, 1,
		    [posix_acl_valid() wants user namespace])
	],[
		AC_MSG_RESULT(no)
	])
])

dnl #
dnl # 3.1 API change,
dnl # Check if inode_operations contains the function get_acl
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_GET_ACL], [
	ZFS_LINUX_TEST_SRC([inode_operations_get_acl], [
		#include <linux/fs.h>

		struct posix_acl *get_acl_fn(struct inode *inode, int type)
		    { return NULL; }

		static const struct inode_operations
		    iops __attribute__ ((unused)) = {
			.get_acl = get_acl_fn,
		};
	],[])
])

AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_GET_ACL], [
	AC_MSG_CHECKING([whether iops->get_acl() exists])
	ZFS_LINUX_TEST_RESULT([inode_operations_get_acl], [
		AC_MSG_RESULT(yes)
	],[
		ZFS_LINUX_TEST_ERROR([iops->get_acl()])
	])
])

dnl #
dnl # 3.14 API change,
dnl # Check if inode_operations contains the function set_acl
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_SET_ACL], [
	ZFS_LINUX_TEST_SRC([inode_operations_set_acl], [
		#include <linux/fs.h>

		int set_acl_fn(struct inode *inode, struct posix_acl *acl,
		    int type) { return 0; }

		static const struct inode_operations
		    iops __attribute__ ((unused)) = {
			.set_acl = set_acl_fn,
		};
	],[])
])

AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_SET_ACL], [
	AC_MSG_CHECKING([whether iops->set_acl() exists])
	ZFS_LINUX_TEST_RESULT([inode_operations_set_acl], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists])
	],[
		AC_MSG_RESULT(no)
	])
])

dnl #
dnl # 4.7 API change,
dnl # The kernel get_acl will now check cache before calling i_op->get_acl and
dnl # do set_cached_acl after that, so i_op->get_acl don't need to do that
dnl # anymore.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_GET_ACL_HANDLE_CACHE], [
	ZFS_LINUX_TEST_SRC([get_acl_handle_cache], [
		#include <linux/fs.h>
	],[
		void *sentinel __attribute__ ((unused)) =
		    uncached_acl_sentinel(NULL);
	])
])

AC_DEFUN([ZFS_AC_KERNEL_GET_ACL_HANDLE_CACHE], [
	AC_MSG_CHECKING([whether uncached_acl_sentinel() exists])
	ZFS_LINUX_TEST_RESULT([get_acl_handle_cache], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_KERNEL_GET_ACL_HANDLE_CACHE, 1,
		    [uncached_acl_sentinel() exists])
	],[
		AC_MSG_RESULT(no)
	])
])

dnl #
dnl # 4.16 kernel: check if struct posix_acl acl.a_refcount is a refcount_t.
dnl # It's an atomic_t on older kernels.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_ACL_HAS_REFCOUNT], [
	ZFS_LINUX_TEST_SRC([acl_refcount], [
		#include <linux/backing-dev.h>
		#include <linux/refcount.h>
		#include <linux/posix_acl.h>
	],[
		struct posix_acl acl;
		refcount_t *r __attribute__ ((unused)) = &acl.a_refcount;
	])
])

AC_DEFUN([ZFS_AC_KERNEL_ACL_HAS_REFCOUNT], [
	AC_MSG_CHECKING([whether posix_acl has refcount_t])
	ZFS_LINUX_TEST_RESULT([acl_refcount], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_ACL_REFCOUNT, 1, [posix_acl has refcount_t])
	],[
		AC_MSG_RESULT(no)
	])
])

AC_DEFUN([ZFS_AC_KERNEL_SRC_ACL], [
	ZFS_AC_KERNEL_SRC_POSIX_ACL_RELEASE
	ZFS_AC_KERNEL_SRC_SET_CACHED_ACL_USABLE
	ZFS_AC_KERNEL_SRC_POSIX_ACL_CHMOD
	ZFS_AC_KERNEL_SRC_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T
	ZFS_AC_KERNEL_SRC_POSIX_ACL_VALID_WITH_NS
	ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_GET_ACL
	ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_SET_ACL
	ZFS_AC_KERNEL_SRC_GET_ACL_HANDLE_CACHE
	ZFS_AC_KERNEL_SRC_ACL_HAS_REFCOUNT
])

AC_DEFUN([ZFS_AC_KERNEL_ACL], [
	ZFS_AC_KERNEL_POSIX_ACL_RELEASE
	ZFS_AC_KERNEL_SET_CACHED_ACL_USABLE
	ZFS_AC_KERNEL_POSIX_ACL_CHMOD
	ZFS_AC_KERNEL_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T
	ZFS_AC_KERNEL_POSIX_ACL_VALID_WITH_NS
	ZFS_AC_KERNEL_INODE_OPERATIONS_GET_ACL
	ZFS_AC_KERNEL_INODE_OPERATIONS_SET_ACL
	ZFS_AC_KERNEL_GET_ACL_HANDLE_CACHE
	ZFS_AC_KERNEL_ACL_HAS_REFCOUNT
])
Commit	Line	Data
023699cd	1	dnl #
e33045ee BB	2	dnl # Check if posix_acl_release can be used from a ZFS_META_LICENSED
e33045ee BB	3	dnl # module. The is_owner_or_cap macro was replaced by
023699cd MM	4	dnl # inode_owner_or_capable
023699cd MM	5	dnl #
608f8749 BB	6	AC_DEFUN([ZFS_AC_KERNEL_SRC_POSIX_ACL_RELEASE], [
608f8749 BB	7	ZFS_LINUX_TEST_SRC([posix_acl_release], [
023699cd MM	8	#include <linux/cred.h>
	9	#include <linux/fs.h>
	10	#include <linux/posix_acl.h>
608f8749 BB	11	], [
608f8749 BB	12	struct posix_acl *tmp = posix_acl_alloc(1, 0);
023699cd	13	posix_acl_release(tmp);
608f8749 BB	14	], [], [$ZFS_META_LICENSE])
	15	])
	16
	17	AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_RELEASE], [
	18	AC_MSG_CHECKING([whether posix_acl_release() is available])
	19	ZFS_LINUX_TEST_RESULT([posix_acl_release], [
023699cd MM	20	AC_MSG_RESULT(yes)
	21	AC_DEFINE(HAVE_POSIX_ACL_RELEASE, 1,
	22	[posix_acl_release() is available])
023699cd	23
e42d4666	24	AC_MSG_CHECKING([whether posix_acl_release() is GPL-only])
608f8749	25	ZFS_LINUX_TEST_RESULT([posix_acl_release_license], [
e42d4666 CC	26	AC_MSG_RESULT(no)
	27	],[
	28	AC_MSG_RESULT(yes)
	29	AC_DEFINE(HAVE_POSIX_ACL_RELEASE_GPL_ONLY, 1,
	30	[posix_acl_release() is GPL-only])
	31	])
023699cd MM	32	],[
023699cd MM	33	AC_MSG_RESULT(no)
023699cd MM	34	])
	35	])
	36
3779913b CC	37	dnl #
	38	dnl # 3.14 API change,
	39	dnl # set_cached_acl() and forget_cached_acl() changed from inline to
	40	dnl # EXPORT_SYMBOL. In the former case, they may not be usable because of
	41	dnl # posix_acl_release. In the latter case, we can always use them.
	42	dnl #
608f8749 BB	43	AC_DEFUN([ZFS_AC_KERNEL_SRC_SET_CACHED_ACL_USABLE], [
608f8749 BB	44	ZFS_LINUX_TEST_SRC([set_cached_acl], [
3779913b CC	45	#include <linux/cred.h>
	46	#include <linux/fs.h>
	47	#include <linux/posix_acl.h>
608f8749	48	], [
3779913b CC	49	struct inode *ip = NULL;
3779913b CC	50	struct posix_acl *acl = posix_acl_alloc(1, 0);
7e5ea7be GN	51	set_cached_acl(ip, ACL_TYPE_ACCESS, acl);
7e5ea7be GN	52	forget_cached_acl(ip, ACL_TYPE_ACCESS);
608f8749 BB	53	], [], [$ZFS_META_LICENSE])
	54	])
	55
	56	AC_DEFUN([ZFS_AC_KERNEL_SET_CACHED_ACL_USABLE], [
	57	AC_MSG_CHECKING([whether set_cached_acl() is usable])
	58	ZFS_LINUX_TEST_RESULT([set_cached_acl_license], [
3779913b CC	59	AC_MSG_RESULT(yes)
3779913b CC	60	AC_DEFINE(HAVE_SET_CACHED_ACL_USABLE, 1,
608f8749	61	[set_cached_acl() is usable])
3779913b CC	62	],[
	63	AC_MSG_RESULT(no)
	64	])
	65	])
	66
023699cd MM	67	dnl #
023699cd MM	68	dnl # 3.1 API change,
066e8252	69	dnl # posix_acl_chmod() was added as the preferred interface.
023699cd	70	dnl #
408ec0d2	71	dnl # 3.14 API change,
066e8252	72	dnl # posix_acl_chmod() was changed to __posix_acl_chmod()
408ec0d2	73	dnl #
608f8749 BB	74	AC_DEFUN([ZFS_AC_KERNEL_SRC_POSIX_ACL_CHMOD], [
608f8749 BB	75	ZFS_LINUX_TEST_SRC([posix_acl_chmod], [
023699cd MM	76	#include <linux/fs.h>
	77	#include <linux/posix_acl.h>
	78	],[
	79	posix_acl_chmod(NULL, 0, 0)
608f8749 BB	80	])
	81
	82	ZFS_LINUX_TEST_SRC([__posix_acl_chmod], [
	83	#include <linux/fs.h>
	84	#include <linux/posix_acl.h>
023699cd	85	],[
608f8749 BB	86	__posix_acl_chmod(NULL, 0, 0)
	87	])
	88	])
	89
	90	AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_CHMOD], [
408ec0d2	91	AC_MSG_CHECKING([whether __posix_acl_chmod exists])
608f8749	92	ZFS_LINUX_TEST_RESULT([__posix_acl_chmod], [
408ec0d2	93	AC_MSG_RESULT(yes)
608f8749 BB	94	AC_DEFINE(HAVE___POSIX_ACL_CHMOD, 1,
608f8749 BB	95	[__posix_acl_chmod() exists])
408ec0d2 CC	96	],[
408ec0d2 CC	97	AC_MSG_RESULT(no)
066e8252 BB	98
	99	AC_MSG_CHECKING([whether posix_acl_chmod exists])
	100	ZFS_LINUX_TEST_RESULT([posix_acl_chmod], [
	101	AC_MSG_RESULT(yes)
	102	AC_DEFINE(HAVE_POSIX_ACL_CHMOD, 1,
	103	[posix_acl_chmod() exists])
	104	],[
	105	ZFS_LINUX_TEST_ERROR([posix_acl_chmod()])
	106	])
408ec0d2	107	])
023699cd MM	108	])
023699cd MM	109
023699cd MM	110	dnl #
023699cd MM	111	dnl # 3.1 API change,
066e8252	112	dnl # posix_acl_equiv_mode now wants an umode_t instead of a mode_t
023699cd	113	dnl #
608f8749 BB	114	AC_DEFUN([ZFS_AC_KERNEL_SRC_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T], [
608f8749 BB	115	ZFS_LINUX_TEST_SRC([posix_acl_equiv_mode], [
023699cd MM	116	#include <linux/fs.h>
	117	#include <linux/posix_acl.h>
	118	],[
	119	umode_t tmp;
066e8252	120	posix_acl_equiv_mode(NULL, &tmp);
608f8749 BB	121	])
	122	])
	123
	124	AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T], [
	125	AC_MSG_CHECKING([whether posix_acl_equiv_mode() wants umode_t])
	126	ZFS_LINUX_TEST_RESULT([posix_acl_equiv_mode], [
023699cd	127	AC_MSG_RESULT(yes)
023699cd	128	],[
066e8252	129	ZFS_LINUX_TEST_ERROR([posix_acl_equiv_mode()])
023699cd MM	130	])
	131	])
	132
4b908d32 BB	133	dnl #
	134	dnl # 4.8 API change,
	135	dnl # The function posix_acl_valid now must be passed a namespace.
	136	dnl #
608f8749 BB	137	AC_DEFUN([ZFS_AC_KERNEL_SRC_POSIX_ACL_VALID_WITH_NS], [
608f8749 BB	138	ZFS_LINUX_TEST_SRC([posix_acl_valid_with_ns], [
4b908d32 BB	139	#include <linux/fs.h>
	140	#include <linux/posix_acl.h>
	141	],[
	142	struct user_namespace *user_ns = NULL;
	143	const struct posix_acl *acl = NULL;
	144	int error;
	145
	146	error = posix_acl_valid(user_ns, acl);
608f8749 BB	147	])
	148	])
	149
	150	AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_VALID_WITH_NS], [
	151	AC_MSG_CHECKING([whether posix_acl_valid() wants user namespace])
	152	ZFS_LINUX_TEST_RESULT([posix_acl_valid_with_ns], [
4b908d32 BB	153	AC_MSG_RESULT(yes)
	154	AC_DEFINE(HAVE_POSIX_ACL_VALID_WITH_NS, 1,
	155	[posix_acl_valid() wants user namespace])
	156	],[
	157	AC_MSG_RESULT(no)
	158	])
	159	])
	160
023699cd MM	161	dnl #
	162	dnl # 3.1 API change,
	163	dnl # Check if inode_operations contains the function get_acl
	164	dnl #
608f8749 BB	165	AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_GET_ACL], [
608f8749 BB	166	ZFS_LINUX_TEST_SRC([inode_operations_get_acl], [
023699cd MM	167	#include <linux/fs.h>
	168
	169	struct posix_acl get_acl_fn(struct inode inode, int type)
	170	{ return NULL; }
	171
	172	static const struct inode_operations
	173	iops __attribute__ ((unused)) = {
	174	.get_acl = get_acl_fn,
	175	};
608f8749 BB	176	],[])
	177	])
	178
	179	AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_GET_ACL], [
	180	AC_MSG_CHECKING([whether iops->get_acl() exists])
	181	ZFS_LINUX_TEST_RESULT([inode_operations_get_acl], [
023699cd	182	AC_MSG_RESULT(yes)
023699cd	183	],[
066e8252	184	ZFS_LINUX_TEST_ERROR([iops->get_acl()])
023699cd MM	185	])
023699cd MM	186	])
afb6c031	187
0420c126	188	dnl #
	189	dnl # 3.14 API change,
	190	dnl # Check if inode_operations contains the function set_acl
	191	dnl #
608f8749 BB	192	AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_SET_ACL], [
608f8749 BB	193	ZFS_LINUX_TEST_SRC([inode_operations_set_acl], [
0420c126	194	#include <linux/fs.h>
0420c126	195
608f8749 BB	196	int set_acl_fn(struct inode inode, struct posix_acl acl,
608f8749 BB	197	int type) { return 0; }
0420c126	198
	199	static const struct inode_operations
	200	iops __attribute__ ((unused)) = {
	201	.set_acl = set_acl_fn,
	202	};
608f8749 BB	203	],[])
	204	])
	205
	206	AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_SET_ACL], [
	207	AC_MSG_CHECKING([whether iops->set_acl() exists])
	208	ZFS_LINUX_TEST_RESULT([inode_operations_set_acl], [
0420c126	209	AC_MSG_RESULT(yes)
	210	AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists])
	211	],[
	212	AC_MSG_RESULT(no)
	213	])
	214	])
	215
afb6c031 CC	216	dnl #
	217	dnl # 4.7 API change,
	218	dnl # The kernel get_acl will now check cache before calling i_op->get_acl and
	219	dnl # do set_cached_acl after that, so i_op->get_acl don't need to do that
	220	dnl # anymore.
	221	dnl #
608f8749 BB	222	AC_DEFUN([ZFS_AC_KERNEL_SRC_GET_ACL_HANDLE_CACHE], [
	223	ZFS_LINUX_TEST_SRC([get_acl_handle_cache], [
	224	#include <linux/fs.h>
	225	],[
	226	void *sentinel __attribute__ ((unused)) =
	227	uncached_acl_sentinel(NULL);
	228	])
	229	])
	230
3779913b	231	AC_DEFUN([ZFS_AC_KERNEL_GET_ACL_HANDLE_CACHE], [
afb6c031	232	AC_MSG_CHECKING([whether uncached_acl_sentinel() exists])
608f8749 BB	233	ZFS_LINUX_TEST_RESULT([get_acl_handle_cache], [
	234	AC_MSG_RESULT(yes)
	235	AC_DEFINE(HAVE_KERNEL_GET_ACL_HANDLE_CACHE, 1,
	236	[uncached_acl_sentinel() exists])
afb6c031	237	],[
608f8749 BB	238	AC_MSG_RESULT(no)
	239	])
	240	])
	241
	242	dnl #
	243	dnl # 4.16 kernel: check if struct posix_acl acl.a_refcount is a refcount_t.
	244	dnl # It's an atomic_t on older kernels.
	245	dnl #
	246	AC_DEFUN([ZFS_AC_KERNEL_SRC_ACL_HAS_REFCOUNT], [
	247	ZFS_LINUX_TEST_SRC([acl_refcount], [
	248	#include <linux/backing-dev.h>
	249	#include <linux/refcount.h>
	250	#include <linux/posix_acl.h>
afb6c031	251	],[
608f8749 BB	252	struct posix_acl acl;
	253	refcount_t *r __attribute__ ((unused)) = &acl.a_refcount;
	254	])
	255	])
	256
	257	AC_DEFUN([ZFS_AC_KERNEL_ACL_HAS_REFCOUNT], [
	258	AC_MSG_CHECKING([whether posix_acl has refcount_t])
	259	ZFS_LINUX_TEST_RESULT([acl_refcount], [
afb6c031	260	AC_MSG_RESULT(yes)
608f8749	261	AC_DEFINE(HAVE_ACL_REFCOUNT, 1, [posix_acl has refcount_t])
afb6c031 CC	262	],[
	263	AC_MSG_RESULT(no)
	264	])
	265	])
608f8749 BB	266
	267	AC_DEFUN([ZFS_AC_KERNEL_SRC_ACL], [
	268	ZFS_AC_KERNEL_SRC_POSIX_ACL_RELEASE
	269	ZFS_AC_KERNEL_SRC_SET_CACHED_ACL_USABLE
	270	ZFS_AC_KERNEL_SRC_POSIX_ACL_CHMOD
	271	ZFS_AC_KERNEL_SRC_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T
	272	ZFS_AC_KERNEL_SRC_POSIX_ACL_VALID_WITH_NS
608f8749 BB	273	ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_GET_ACL
	274	ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_SET_ACL
	275	ZFS_AC_KERNEL_SRC_GET_ACL_HANDLE_CACHE
	276	ZFS_AC_KERNEL_SRC_ACL_HAS_REFCOUNT
	277	])
	278
	279	AC_DEFUN([ZFS_AC_KERNEL_ACL], [
	280	ZFS_AC_KERNEL_POSIX_ACL_RELEASE
	281	ZFS_AC_KERNEL_SET_CACHED_ACL_USABLE
	282	ZFS_AC_KERNEL_POSIX_ACL_CHMOD
	283	ZFS_AC_KERNEL_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T
	284	ZFS_AC_KERNEL_POSIX_ACL_VALID_WITH_NS
608f8749 BB	285	ZFS_AC_KERNEL_INODE_OPERATIONS_GET_ACL
	286	ZFS_AC_KERNEL_INODE_OPERATIONS_SET_ACL
	287	ZFS_AC_KERNEL_GET_ACL_HANDLE_CACHE
	288	ZFS_AC_KERNEL_ACL_HAS_REFCOUNT
	289	])