[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 #
dnl # 5.15 API change,
dnl # Added the bool rcu argument to get_acl for rcu path walk.
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,
		};
	],[])

	ZFS_LINUX_TEST_SRC([inode_operations_get_acl_rcu], [
		#include <linux/fs.h>

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

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

	ZFS_LINUX_TEST_SRC([inode_operations_get_inode_acl], [
		#include <linux/fs.h>

		struct posix_acl *get_inode_acl_fn(struct inode *inode, int type,
		    bool rcu) { return NULL; }

		static const struct inode_operations
		    iops __attribute__ ((unused)) = {
			.get_inode_acl = get_inode_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)
		AC_DEFINE(HAVE_GET_ACL, 1, [iops->get_acl() exists])
	],[
		ZFS_LINUX_TEST_RESULT([inode_operations_get_acl_rcu], [
			AC_MSG_RESULT(yes)
			AC_DEFINE(HAVE_GET_ACL_RCU, 1, [iops->get_acl() takes rcu])
		],[
			ZFS_LINUX_TEST_RESULT([inode_operations_get_inode_acl], [
				AC_MSG_RESULT(yes)
				AC_DEFINE(HAVE_GET_INODE_ACL, 1, [has iops->get_inode_acl()])
			],[
				ZFS_LINUX_TEST_ERROR([iops->get_acl() or iops->get_inode_acl()])
			])
		])
	])
])

dnl #
dnl # 3.14 API change,
dnl # Check if inode_operations contains the function set_acl
dnl #
dnl # 5.12 API change,
dnl # set_acl() added a user_namespace* parameter first
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_SET_ACL], [
	ZFS_LINUX_TEST_SRC([inode_operations_set_acl_userns], [
		#include <linux/fs.h>

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

		static const struct inode_operations
		    iops __attribute__ ((unused)) = {
			.set_acl = set_acl_fn,
		};
	],[])
	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_userns], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists])
		AC_DEFINE(HAVE_SET_ACL_USERNS, 1, [iops->set_acl() takes 4 args])
	],[
		ZFS_LINUX_TEST_RESULT([inode_operations_set_acl], [
			AC_MSG_RESULT(yes)
			AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists, takes 3 args])
		],[
			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);
c347fac5	14	], [], [ZFS_META_LICENSE])
608f8749 BB	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);
c347fac5	53	], [], [ZFS_META_LICENSE])
608f8749 BB	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 #
2079111f BB	165	dnl # 5.15 API change,
	166	dnl # Added the bool rcu argument to get_acl for rcu path walk.
	167	dnl #
608f8749 BB	168	AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_GET_ACL], [
608f8749 BB	169	ZFS_LINUX_TEST_SRC([inode_operations_get_acl], [
023699cd MM	170	#include <linux/fs.h>
	171
	172	struct posix_acl get_acl_fn(struct inode inode, int type)
	173	{ return NULL; }
	174
	175	static const struct inode_operations
	176	iops __attribute__ ((unused)) = {
	177	.get_acl = get_acl_fn,
	178	};
608f8749	179	],[])
2079111f BB	180
	181	ZFS_LINUX_TEST_SRC([inode_operations_get_acl_rcu], [
	182	#include <linux/fs.h>
	183
	184	struct posix_acl get_acl_fn(struct inode inode, int type,
	185	bool rcu) { return NULL; }
	186
	187	static const struct inode_operations
	188	iops __attribute__ ((unused)) = {
	189	.get_acl = get_acl_fn,
	190	};
	191	],[])
884a6935 CK	192
	193	ZFS_LINUX_TEST_SRC([inode_operations_get_inode_acl], [
	194	#include <linux/fs.h>
	195
	196	struct posix_acl get_inode_acl_fn(struct inode inode, int type,
	197	bool rcu) { return NULL; }
	198
	199	static const struct inode_operations
	200	iops __attribute__ ((unused)) = {
	201	.get_inode_acl = get_inode_acl_fn,
	202	};
	203	],[])
608f8749 BB	204	])
	205
	206	AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_GET_ACL], [
	207	AC_MSG_CHECKING([whether iops->get_acl() exists])
	208	ZFS_LINUX_TEST_RESULT([inode_operations_get_acl], [
023699cd	209	AC_MSG_RESULT(yes)
2079111f	210	AC_DEFINE(HAVE_GET_ACL, 1, [iops->get_acl() exists])
023699cd	211	],[
2079111f BB	212	ZFS_LINUX_TEST_RESULT([inode_operations_get_acl_rcu], [
	213	AC_MSG_RESULT(yes)
	214	AC_DEFINE(HAVE_GET_ACL_RCU, 1, [iops->get_acl() takes rcu])
	215	],[
884a6935 CK	216	ZFS_LINUX_TEST_RESULT([inode_operations_get_inode_acl], [
	217	AC_MSG_RESULT(yes)
	218	AC_DEFINE(HAVE_GET_INODE_ACL, 1, [has iops->get_inode_acl()])
	219	],[
	220	ZFS_LINUX_TEST_ERROR([iops->get_acl() or iops->get_inode_acl()])
	221	])
2079111f	222	])
023699cd MM	223	])
023699cd MM	224	])
afb6c031	225
0420c126	226	dnl #
	227	dnl # 3.14 API change,
	228	dnl # Check if inode_operations contains the function set_acl
	229	dnl #
ba646e3e RE	230	dnl # 5.12 API change,
	231	dnl # set_acl() added a user_namespace* parameter first
	232	dnl #
608f8749	233	AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_SET_ACL], [
ba646e3e RE	234	ZFS_LINUX_TEST_SRC([inode_operations_set_acl_userns], [
	235	#include <linux/fs.h>
	236
	237	int set_acl_fn(struct user_namespace *userns,
	238	struct inode inode, struct posix_acl acl,
	239	int type) { return 0; }
	240
	241	static const struct inode_operations
	242	iops __attribute__ ((unused)) = {
	243	.set_acl = set_acl_fn,
	244	};
	245	],[])
608f8749	246	ZFS_LINUX_TEST_SRC([inode_operations_set_acl], [
0420c126	247	#include <linux/fs.h>
0420c126	248
608f8749 BB	249	int set_acl_fn(struct inode inode, struct posix_acl acl,
608f8749 BB	250	int type) { return 0; }
0420c126	251
	252	static const struct inode_operations
	253	iops __attribute__ ((unused)) = {
	254	.set_acl = set_acl_fn,
	255	};
608f8749 BB	256	],[])
	257	])
	258
	259	AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_SET_ACL], [
	260	AC_MSG_CHECKING([whether iops->set_acl() exists])
ba646e3e	261	ZFS_LINUX_TEST_RESULT([inode_operations_set_acl_userns], [
0420c126	262	AC_MSG_RESULT(yes)
0420c126	263	AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists])
ba646e3e	264	AC_DEFINE(HAVE_SET_ACL_USERNS, 1, [iops->set_acl() takes 4 args])
0420c126	265	],[
ba646e3e RE	266	ZFS_LINUX_TEST_RESULT([inode_operations_set_acl], [
	267	AC_MSG_RESULT(yes)
	268	AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists, takes 3 args])
	269	],[
	270	AC_MSG_RESULT(no)
	271	])
0420c126	272	])
	273	])
	274
afb6c031 CC	275	dnl #
	276	dnl # 4.7 API change,
	277	dnl # The kernel get_acl will now check cache before calling i_op->get_acl and
	278	dnl # do set_cached_acl after that, so i_op->get_acl don't need to do that
	279	dnl # anymore.
	280	dnl #
608f8749 BB	281	AC_DEFUN([ZFS_AC_KERNEL_SRC_GET_ACL_HANDLE_CACHE], [
	282	ZFS_LINUX_TEST_SRC([get_acl_handle_cache], [
	283	#include <linux/fs.h>
	284	],[
	285	void *sentinel __attribute__ ((unused)) =
	286	uncached_acl_sentinel(NULL);
	287	])
	288	])
	289
3779913b	290	AC_DEFUN([ZFS_AC_KERNEL_GET_ACL_HANDLE_CACHE], [
afb6c031	291	AC_MSG_CHECKING([whether uncached_acl_sentinel() exists])
608f8749 BB	292	ZFS_LINUX_TEST_RESULT([get_acl_handle_cache], [
	293	AC_MSG_RESULT(yes)
	294	AC_DEFINE(HAVE_KERNEL_GET_ACL_HANDLE_CACHE, 1,
	295	[uncached_acl_sentinel() exists])
afb6c031	296	],[
608f8749 BB	297	AC_MSG_RESULT(no)
	298	])
	299	])
	300
	301	dnl #
	302	dnl # 4.16 kernel: check if struct posix_acl acl.a_refcount is a refcount_t.
	303	dnl # It's an atomic_t on older kernels.
	304	dnl #
	305	AC_DEFUN([ZFS_AC_KERNEL_SRC_ACL_HAS_REFCOUNT], [
	306	ZFS_LINUX_TEST_SRC([acl_refcount], [
	307	#include <linux/backing-dev.h>
	308	#include <linux/refcount.h>
	309	#include <linux/posix_acl.h>
afb6c031	310	],[
608f8749 BB	311	struct posix_acl acl;
	312	refcount_t *r __attribute__ ((unused)) = &acl.a_refcount;
	313	])
	314	])
	315
	316	AC_DEFUN([ZFS_AC_KERNEL_ACL_HAS_REFCOUNT], [
	317	AC_MSG_CHECKING([whether posix_acl has refcount_t])
	318	ZFS_LINUX_TEST_RESULT([acl_refcount], [
afb6c031	319	AC_MSG_RESULT(yes)
608f8749	320	AC_DEFINE(HAVE_ACL_REFCOUNT, 1, [posix_acl has refcount_t])
afb6c031 CC	321	],[
	322	AC_MSG_RESULT(no)
	323	])
	324	])
608f8749 BB	325
	326	AC_DEFUN([ZFS_AC_KERNEL_SRC_ACL], [
	327	ZFS_AC_KERNEL_SRC_POSIX_ACL_RELEASE
	328	ZFS_AC_KERNEL_SRC_SET_CACHED_ACL_USABLE
	329	ZFS_AC_KERNEL_SRC_POSIX_ACL_CHMOD
	330	ZFS_AC_KERNEL_SRC_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T
	331	ZFS_AC_KERNEL_SRC_POSIX_ACL_VALID_WITH_NS
608f8749 BB	332	ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_GET_ACL
	333	ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_SET_ACL
	334	ZFS_AC_KERNEL_SRC_GET_ACL_HANDLE_CACHE
	335	ZFS_AC_KERNEL_SRC_ACL_HAS_REFCOUNT
	336	])
	337
	338	AC_DEFUN([ZFS_AC_KERNEL_ACL], [
	339	ZFS_AC_KERNEL_POSIX_ACL_RELEASE
	340	ZFS_AC_KERNEL_SET_CACHED_ACL_USABLE
	341	ZFS_AC_KERNEL_POSIX_ACL_CHMOD
	342	ZFS_AC_KERNEL_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T
	343	ZFS_AC_KERNEL_POSIX_ACL_VALID_WITH_NS
608f8749 BB	344	ZFS_AC_KERNEL_INODE_OPERATIONS_GET_ACL
	345	ZFS_AC_KERNEL_INODE_OPERATIONS_SET_ACL
	346	ZFS_AC_KERNEL_GET_ACL_HANDLE_CACHE
	347	ZFS_AC_KERNEL_ACL_HAS_REFCOUNT
	348	])