[mirror_zfs.git] / config / kernel-xattr-handler.m4

dnl #
dnl # 2.6.35 API change,
dnl # The 'struct xattr_handler' was constified in the generic
dnl # super_block structure.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_CONST_XATTR_HANDLER], [
	ZFS_LINUX_TEST_SRC([const_xattr_handler], [
		#include <linux/fs.h>
		#include <linux/xattr.h>

		const struct xattr_handler xattr_test_handler = {
			.prefix	= "test",
			.get	= NULL,
			.set	= NULL,
		};

		const struct xattr_handler *xattr_handlers[] = {
			&xattr_test_handler,
		};

		const struct super_block sb __attribute__ ((unused)) = {
			.s_xattr = xattr_handlers,
		};
	],[])
])

AC_DEFUN([ZFS_AC_KERNEL_CONST_XATTR_HANDLER], [
	AC_MSG_CHECKING([whether super_block uses const struct xattr_handler])
	ZFS_LINUX_TEST_RESULT([const_xattr_handler], [
		AC_MSG_RESULT([yes])
	],[
		ZFS_LINUX_TEST_ERROR([const xattr_handler])
	])
])

dnl #
dnl # 4.5 API change,
dnl # struct xattr_handler added new member "name".
dnl # xattr_handler which matches to whole name rather than prefix should use
dnl # "name" instead of "prefix", e.g. "system.posix_acl_access"
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_NAME], [
	ZFS_LINUX_TEST_SRC([xattr_handler_name], [
		#include <linux/xattr.h>

		static const struct xattr_handler
		    xops __attribute__ ((unused)) = {
			.name = XATTR_NAME_POSIX_ACL_ACCESS,
		};
	],[])
])

AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_NAME], [
	AC_MSG_CHECKING([whether xattr_handler has name])
	ZFS_LINUX_TEST_RESULT([xattr_handler_name], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_XATTR_HANDLER_NAME, 1,
		    [xattr_handler has name])
	],[
		AC_MSG_RESULT(no)
	])
])

dnl #
dnl # Supported xattr handler get() interfaces checked newest to oldest.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_GET], [
	ZFS_LINUX_TEST_SRC([xattr_handler_get_dentry_inode], [
		#include <linux/xattr.h>

		int get(const struct xattr_handler *handler,
		    struct dentry *dentry, struct inode *inode,
		    const char *name, void *buffer, size_t size) { return 0; }
		static const struct xattr_handler
		    xops __attribute__ ((unused)) = {
			.get = get,
		};
	],[])

	ZFS_LINUX_TEST_SRC([xattr_handler_get_xattr_handler], [
		#include <linux/xattr.h>

		int get(const struct xattr_handler *handler,
		    struct dentry *dentry, const char *name,
		    void *buffer, size_t size) { return 0; }
		static const struct xattr_handler
		    xops __attribute__ ((unused)) = {
			.get = get,
		};
	],[])

	ZFS_LINUX_TEST_SRC([xattr_handler_get_dentry], [
		#include <linux/xattr.h>

		int get(struct dentry *dentry, const char *name,
		    void *buffer, size_t size, int handler_flags)
		    { return 0; }
		static const struct xattr_handler
		    xops __attribute__ ((unused)) = {
			.get = get,
		};
	],[])
])

AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_GET], [
	dnl #
	dnl # 4.7 API change,
	dnl # The xattr_handler->get() callback was changed to take both
	dnl # dentry and inode.
	dnl #
	AC_MSG_CHECKING([whether xattr_handler->get() wants dentry and inode])
	ZFS_LINUX_TEST_RESULT([xattr_handler_get_dentry_inode], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_XATTR_GET_DENTRY_INODE, 1,
		    [xattr_handler->get() wants both dentry and inode])
	],[
		dnl #
		dnl # 4.4 API change,
		dnl # The xattr_handler->get() callback was changed to take a
		dnl # attr_handler, and handler_flags argument was removed and
		dnl # should be accessed by handler->flags.
		dnl #
		AC_MSG_RESULT(no)
		AC_MSG_CHECKING(
		    [whether xattr_handler->get() wants xattr_handler])
		ZFS_LINUX_TEST_RESULT([xattr_handler_get_xattr_handler], [
			AC_MSG_RESULT(yes)
			AC_DEFINE(HAVE_XATTR_GET_HANDLER, 1,
			    [xattr_handler->get() wants xattr_handler])
		],[
			dnl #
			dnl # 2.6.33 API change,
			dnl # The xattr_handler->get() callback was changed
			dnl # to take a dentry instead of an inode, and a
			dnl # handler_flags argument was added.
			dnl #
			AC_MSG_RESULT(no)
			AC_MSG_CHECKING(
			    [whether xattr_handler->get() wants dentry])
			ZFS_LINUX_TEST_RESULT([xattr_handler_get_dentry], [
				AC_MSG_RESULT(yes)
				AC_DEFINE(HAVE_XATTR_GET_DENTRY, 1,
				    [xattr_handler->get() wants dentry])
			],[
				ZFS_LINUX_TEST_ERROR([xattr get()])
			])
		])
	])
])

dnl #
dnl # Supported xattr handler set() interfaces checked newest to oldest.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_SET], [
	ZFS_LINUX_TEST_SRC([xattr_handler_set_dentry_inode], [
		#include <linux/xattr.h>

		int set(const struct xattr_handler *handler,
		    struct dentry *dentry, struct inode *inode,
		    const char *name, const void *buffer,
		    size_t size, int flags)
		    { return 0; }
		static const struct xattr_handler
		    xops __attribute__ ((unused)) = {
			.set = set,
		};
	],[])

	ZFS_LINUX_TEST_SRC([xattr_handler_set_xattr_handler], [
		#include <linux/xattr.h>

		int set(const struct xattr_handler *handler,
		    struct dentry *dentry, const char *name,
		    const void *buffer, size_t size, int flags)
		    { return 0; }
		static const struct xattr_handler
		    xops __attribute__ ((unused)) = {
			.set = set,
		};
	],[])

	ZFS_LINUX_TEST_SRC([xattr_handler_set_dentry], [
		#include <linux/xattr.h>

		int set(struct dentry *dentry, const char *name,
		    const void *buffer, size_t size, int flags,
		    int handler_flags) { return 0; }
		static const struct xattr_handler
		    xops __attribute__ ((unused)) = {
			.set = set,
		};
	],[])
])

AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_SET], [
	dnl #
	dnl # 4.7 API change,
	dnl # The xattr_handler->set() callback was changed to take both
	dnl # dentry and inode.
	dnl #
	AC_MSG_CHECKING([whether xattr_handler->set() wants dentry and inode])
	ZFS_LINUX_TEST_RESULT([xattr_handler_set_dentry_inode], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_XATTR_SET_DENTRY_INODE, 1,
		    [xattr_handler->set() wants both dentry and inode])
	],[
		dnl #
		dnl # 4.4 API change,
		dnl # The xattr_handler->set() callback was changed to take a
		dnl # xattr_handler, and handler_flags argument was removed and
		dnl # should be accessed by handler->flags.
		dnl #
		AC_MSG_RESULT(no)
		AC_MSG_CHECKING(
		    [whether xattr_handler->set() wants xattr_handler])
		ZFS_LINUX_TEST_RESULT([xattr_handler_set_xattr_handler], [
			AC_MSG_RESULT(yes)
			AC_DEFINE(HAVE_XATTR_SET_HANDLER, 1,
			    [xattr_handler->set() wants xattr_handler])
		],[
			dnl #
			dnl # 2.6.33 API change,
			dnl # The xattr_handler->set() callback was changed
			dnl # to take a dentry instead of an inode, and a
			dnl # handler_flags argument was added.
			dnl #
			AC_MSG_RESULT(no)
			AC_MSG_CHECKING(
			    [whether xattr_handler->set() wants dentry])
			ZFS_LINUX_TEST_RESULT([xattr_handler_set_dentry], [
				AC_MSG_RESULT(yes)
				AC_DEFINE(HAVE_XATTR_SET_DENTRY, 1,
				    [xattr_handler->set() wants dentry])
			],[
				ZFS_LINUX_TEST_ERROR([xattr set()])
			])
		])
	])
])

dnl #
dnl # Supported xattr handler list() interfaces checked newest to oldest.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_LIST], [
	ZFS_LINUX_TEST_SRC([xattr_handler_list_simple], [
		#include <linux/xattr.h>

		bool list(struct dentry *dentry) { return 0; }
		static const struct xattr_handler
		    xops __attribute__ ((unused)) = {
			.list = list,
		};
	],[])

	ZFS_LINUX_TEST_SRC([xattr_handler_list_xattr_handler], [
		#include <linux/xattr.h>

		size_t list(const struct xattr_handler *handler,
		    struct dentry *dentry, char *list, size_t list_size,
		    const char *name, size_t name_len) { return 0; }
		static const struct xattr_handler
		    xops __attribute__ ((unused)) = {
			.list = list,
		};
	],[])

	ZFS_LINUX_TEST_SRC([xattr_handler_list_dentry], [
		#include <linux/xattr.h>

		size_t list(struct dentry *dentry,
		    char *list, size_t list_size,
		    const char *name, size_t name_len,
		    int handler_flags) { return 0; }
		static const struct xattr_handler
		    xops __attribute__ ((unused)) = {
			.list = list,
		};
	],[])
])

AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_LIST], [
	dnl # 4.5 API change,
	dnl # The xattr_handler->list() callback was changed to take only a
	dnl # dentry and it only needs to return if it's accessible.
	AC_MSG_CHECKING([whether xattr_handler->list() wants simple])
	ZFS_LINUX_TEST_RESULT([xattr_handler_list_simple], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_XATTR_LIST_SIMPLE, 1,
		    [xattr_handler->list() wants simple])
	],[
		dnl #
		dnl # 4.4 API change,
		dnl # The xattr_handler->list() callback was changed to take a
		dnl # xattr_handler, and handler_flags argument was removed
		dnl # and should be accessed by handler->flags.
		dnl #
		AC_MSG_RESULT(no)
		AC_MSG_CHECKING(
		    [whether xattr_handler->list() wants xattr_handler])
		ZFS_LINUX_TEST_RESULT([xattr_handler_list_xattr_handler], [
			AC_MSG_RESULT(yes)
			AC_DEFINE(HAVE_XATTR_LIST_HANDLER, 1,
			    [xattr_handler->list() wants xattr_handler])
		],[
			dnl #
			dnl # 2.6.33 API change,
			dnl # The xattr_handler->list() callback was changed
			dnl # to take a dentry instead of an inode, and a
			dnl # handler_flags argument was added.
			dnl #
			AC_MSG_RESULT(no)
			AC_MSG_CHECKING(
			    [whether xattr_handler->list() wants dentry])
			ZFS_LINUX_TEST_RESULT([xattr_handler_list_dentry], [
				AC_MSG_RESULT(yes)
				AC_DEFINE(HAVE_XATTR_LIST_DENTRY, 1,
				    [xattr_handler->list() wants dentry])
			],[
				ZFS_LINUX_TEST_ERROR([xattr list()])
			])
		])
	])
])

dnl #
dnl # 3.7 API change,
dnl # The posix_acl_{from,to}_xattr functions gained a new
dnl # parameter: user_ns
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_POSIX_ACL_FROM_XATTR_USERNS], [
	ZFS_LINUX_TEST_SRC([posix_acl_from_xattr_userns], [
		#include <linux/cred.h>
		#include <linux/fs.h>
		#include <linux/posix_acl_xattr.h>
	],[
		posix_acl_from_xattr(&init_user_ns, NULL, 0);
	])
])

AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_FROM_XATTR_USERNS], [
	AC_MSG_CHECKING([whether posix_acl_from_xattr() needs user_ns])
	ZFS_LINUX_TEST_RESULT([posix_acl_from_xattr_userns], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_POSIX_ACL_FROM_XATTR_USERNS, 1,
		    [posix_acl_from_xattr() needs user_ns])
	],[
		ZFS_LINUX_TEST_ERROR([posix_acl_from_xattr()])
	])
])

dnl #
dnl # 4.9 API change,
dnl # iops->{set,get,remove}xattr and generic_{set,get,remove}xattr are
dnl # removed. xattr operations will directly go through sb->s_xattr.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_SETXATTR], [
	ZFS_LINUX_TEST_SRC([have_generic_setxattr], [
		#include <linux/fs.h>
		#include <linux/xattr.h>

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

AC_DEFUN([ZFS_AC_KERNEL_GENERIC_SETXATTR], [
	AC_MSG_CHECKING([whether generic_setxattr() exists])
	ZFS_LINUX_TEST_RESULT([have_generic_setxattr], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_GENERIC_SETXATTR, 1,
		    [generic_setxattr() exists])
	],[
		AC_MSG_RESULT(no)
	])
])

AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR], [
	ZFS_AC_KERNEL_SRC_CONST_XATTR_HANDLER
	ZFS_AC_KERNEL_SRC_XATTR_HANDLER_NAME
	ZFS_AC_KERNEL_SRC_XATTR_HANDLER_GET
	ZFS_AC_KERNEL_SRC_XATTR_HANDLER_SET
	ZFS_AC_KERNEL_SRC_XATTR_HANDLER_LIST
	ZFS_AC_KERNEL_SRC_POSIX_ACL_FROM_XATTR_USERNS
	ZFS_AC_KERNEL_SRC_GENERIC_SETXATTR
])

AC_DEFUN([ZFS_AC_KERNEL_XATTR], [
	ZFS_AC_KERNEL_CONST_XATTR_HANDLER
	ZFS_AC_KERNEL_XATTR_HANDLER_NAME
	ZFS_AC_KERNEL_XATTR_HANDLER_GET
	ZFS_AC_KERNEL_XATTR_HANDLER_SET
	ZFS_AC_KERNEL_XATTR_HANDLER_LIST
	ZFS_AC_KERNEL_POSIX_ACL_FROM_XATTR_USERNS
	ZFS_AC_KERNEL_GENERIC_SETXATTR
])
Commit	Line	Data
777d4af8 BB	1	dnl #
	2	dnl # 2.6.35 API change,
	3	dnl # The 'struct xattr_handler' was constified in the generic
	4	dnl # super_block structure.
	5	dnl #
608f8749 BB	6	AC_DEFUN([ZFS_AC_KERNEL_SRC_CONST_XATTR_HANDLER], [
608f8749 BB	7	ZFS_LINUX_TEST_SRC([const_xattr_handler], [
777d4af8 BB	8	#include <linux/fs.h>
	9	#include <linux/xattr.h>
	10
	11	const struct xattr_handler xattr_test_handler = {
	12	.prefix = "test",
	13	.get = NULL,
	14	.set = NULL,
	15	};
	16
	17	const struct xattr_handler *xattr_handlers[] = {
	18	&xattr_test_handler,
	19	};
777d4af8	20
b83e3e48 RY	21	const struct super_block sb __attribute__ ((unused)) = {
	22	.s_xattr = xattr_handlers,
	23	};
608f8749 BB	24	],[])
	25	])
	26
	27	AC_DEFUN([ZFS_AC_KERNEL_CONST_XATTR_HANDLER], [
	28	AC_MSG_CHECKING([whether super_block uses const struct xattr_handler])
	29	ZFS_LINUX_TEST_RESULT([const_xattr_handler], [
777d4af8	30	AC_MSG_RESULT([yes])
777d4af8	31	],[
066e8252	32	ZFS_LINUX_TEST_ERROR([const xattr_handler])
777d4af8 BB	33	])
777d4af8 BB	34	])
f9637c6c	35
232604b5 CC	36	dnl #
	37	dnl # 4.5 API change,
	38	dnl # struct xattr_handler added new member "name".
	39	dnl # xattr_handler which matches to whole name rather than prefix should use
	40	dnl # "name" instead of "prefix", e.g. "system.posix_acl_access"
	41	dnl #
608f8749 BB	42	AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_NAME], [
608f8749 BB	43	ZFS_LINUX_TEST_SRC([xattr_handler_name], [
232604b5 CC	44	#include <linux/xattr.h>
	45
	46	static const struct xattr_handler
	47	xops __attribute__ ((unused)) = {
	48	.name = XATTR_NAME_POSIX_ACL_ACCESS,
	49	};
608f8749 BB	50	],[])
	51	])
	52
	53	AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_NAME], [
	54	AC_MSG_CHECKING([whether xattr_handler has name])
	55	ZFS_LINUX_TEST_RESULT([xattr_handler_name], [
232604b5 CC	56	AC_MSG_RESULT(yes)
	57	AC_DEFINE(HAVE_XATTR_HANDLER_NAME, 1,
	58	[xattr_handler has name])
	59	],[
	60	AC_MSG_RESULT(no)
	61	])
0fedeedd CC	62	])
	63
	64	dnl #
608f8749	65	dnl # Supported xattr handler get() interfaces checked newest to oldest.
0fedeedd	66	dnl #
608f8749 BB	67	AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_GET], [
608f8749 BB	68	ZFS_LINUX_TEST_SRC([xattr_handler_get_dentry_inode], [
0fedeedd CC	69	#include <linux/xattr.h>
0fedeedd CC	70
608f8749 BB	71	int get(const struct xattr_handler *handler,
	72	struct dentry dentry, struct inode inode,
	73	const char name, void buffer, size_t size) { return 0; }
	74	static const struct xattr_handler
	75	xops __attribute__ ((unused)) = {
	76	.get = get,
0fedeedd	77	};
608f8749	78	],[])
232604b5	79
608f8749	80	ZFS_LINUX_TEST_SRC([xattr_handler_get_xattr_handler], [
f9637c6c	81	#include <linux/xattr.h>
f9637c6c	82
4967a3eb	83	int get(const struct xattr_handler *handler,
608f8749 BB	84	struct dentry dentry, const char name,
608f8749 BB	85	void *buffer, size_t size) { return 0; }
b83e3e48 RY	86	static const struct xattr_handler
	87	xops __attribute__ ((unused)) = {
	88	.get = get,
	89	};
608f8749 BB	90	],[])
	91
	92	ZFS_LINUX_TEST_SRC([xattr_handler_get_dentry], [
	93	#include <linux/xattr.h>
	94
	95	int get(struct dentry dentry, const char name,
	96	void *buffer, size_t size, int handler_flags)
	97	{ return 0; }
	98	static const struct xattr_handler
	99	xops __attribute__ ((unused)) = {
	100	.get = get,
	101	};
	102	],[])
608f8749 BB	103	])
	104
	105	AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_GET], [
	106	dnl #
	107	dnl # 4.7 API change,
	108	dnl # The xattr_handler->get() callback was changed to take both
	109	dnl # dentry and inode.
	110	dnl #
	111	AC_MSG_CHECKING([whether xattr_handler->get() wants dentry and inode])
	112	ZFS_LINUX_TEST_RESULT([xattr_handler_get_dentry_inode], [
f9637c6c	113	AC_MSG_RESULT(yes)
fd4c7b7a	114	AC_DEFINE(HAVE_XATTR_GET_DENTRY_INODE, 1,
8fbbc6b4	115	[xattr_handler->get() wants both dentry and inode])
f9637c6c	116	],[
4967a3eb	117	dnl #
fd4c7b7a CC	118	dnl # 4.4 API change,
	119	dnl # The xattr_handler->get() callback was changed to take a
	120	dnl # attr_handler, and handler_flags argument was removed and
	121	dnl # should be accessed by handler->flags.
4967a3eb	122	dnl #
d4701011	123	AC_MSG_RESULT(no)
608f8749 BB	124	AC_MSG_CHECKING(
	125	[whether xattr_handler->get() wants xattr_handler])
	126	ZFS_LINUX_TEST_RESULT([xattr_handler_get_xattr_handler], [
61d482f7	127	AC_MSG_RESULT(yes)
fd4c7b7a CC	128	AC_DEFINE(HAVE_XATTR_GET_HANDLER, 1,
fd4c7b7a CC	129	[xattr_handler->get() wants xattr_handler])
61d482f7	130	],[
4967a3eb	131	dnl #
fd4c7b7a	132	dnl # 2.6.33 API change,
608f8749 BB	133	dnl # The xattr_handler->get() callback was changed
	134	dnl # to take a dentry instead of an inode, and a
	135	dnl # handler_flags argument was added.
4967a3eb	136	dnl #
61d482f7	137	AC_MSG_RESULT(no)
608f8749 BB	138	AC_MSG_CHECKING(
	139	[whether xattr_handler->get() wants dentry])
	140	ZFS_LINUX_TEST_RESULT([xattr_handler_get_dentry], [
4967a3eb	141	AC_MSG_RESULT(yes)
fd4c7b7a CC	142	AC_DEFINE(HAVE_XATTR_GET_DENTRY, 1,
fd4c7b7a CC	143	[xattr_handler->get() wants dentry])
4967a3eb	144	],[
066e8252	145	ZFS_LINUX_TEST_ERROR([xattr get()])
4967a3eb	146	])
61d482f7	147	])
f9637c6c BB	148	])
	149	])
	150
	151	dnl #
4967a3eb	152	dnl # Supported xattr handler set() interfaces checked newest to oldest.
61d482f7	153	dnl #
608f8749 BB	154	AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_SET], [
608f8749 BB	155	ZFS_LINUX_TEST_SRC([xattr_handler_set_dentry_inode], [
f9637c6c	156	#include <linux/xattr.h>
f9637c6c	157
4967a3eb	158	int set(const struct xattr_handler *handler,
8fbbc6b4 BB	159	struct dentry dentry, struct inode inode,
	160	const char name, const void buffer,
	161	size_t size, int flags)
4967a3eb	162	{ return 0; }
b83e3e48 RY	163	static const struct xattr_handler
	164	xops __attribute__ ((unused)) = {
	165	.set = set,
	166	};
608f8749 BB	167	],[])
	168
	169	ZFS_LINUX_TEST_SRC([xattr_handler_set_xattr_handler], [
	170	#include <linux/xattr.h>
	171
	172	int set(const struct xattr_handler *handler,
	173	struct dentry dentry, const char name,
	174	const void *buffer, size_t size, int flags)
	175	{ return 0; }
	176	static const struct xattr_handler
	177	xops __attribute__ ((unused)) = {
	178	.set = set,
	179	};
	180	],[])
	181
	182	ZFS_LINUX_TEST_SRC([xattr_handler_set_dentry], [
	183	#include <linux/xattr.h>
	184
	185	int set(struct dentry dentry, const char name,
	186	const void *buffer, size_t size, int flags,
	187	int handler_flags) { return 0; }
	188	static const struct xattr_handler
	189	xops __attribute__ ((unused)) = {
	190	.set = set,
	191	};
	192	],[])
608f8749 BB	193	])
	194
	195	AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_SET], [
	196	dnl #
	197	dnl # 4.7 API change,
	198	dnl # The xattr_handler->set() callback was changed to take both
	199	dnl # dentry and inode.
	200	dnl #
	201	AC_MSG_CHECKING([whether xattr_handler->set() wants dentry and inode])
	202	ZFS_LINUX_TEST_RESULT([xattr_handler_set_dentry_inode], [
f9637c6c	203	AC_MSG_RESULT(yes)
8fbbc6b4 BB	204	AC_DEFINE(HAVE_XATTR_SET_DENTRY_INODE, 1,
8fbbc6b4 BB	205	[xattr_handler->set() wants both dentry and inode])
f9637c6c	206	],[
4967a3eb	207	dnl #
8fbbc6b4	208	dnl # 4.4 API change,
4967a3eb	209	dnl # The xattr_handler->set() callback was changed to take a
8fbbc6b4 BB	210	dnl # xattr_handler, and handler_flags argument was removed and
8fbbc6b4 BB	211	dnl # should be accessed by handler->flags.
4967a3eb	212	dnl #
d4701011	213	AC_MSG_RESULT(no)
608f8749 BB	214	AC_MSG_CHECKING(
	215	[whether xattr_handler->set() wants xattr_handler])
	216	ZFS_LINUX_TEST_RESULT([xattr_handler_set_xattr_handler], [
61d482f7	217	AC_MSG_RESULT(yes)
8fbbc6b4 BB	218	AC_DEFINE(HAVE_XATTR_SET_HANDLER, 1,
8fbbc6b4 BB	219	[xattr_handler->set() wants xattr_handler])
61d482f7	220	],[
4967a3eb	221	dnl #
8fbbc6b4	222	dnl # 2.6.33 API change,
608f8749 BB	223	dnl # The xattr_handler->set() callback was changed
	224	dnl # to take a dentry instead of an inode, and a
	225	dnl # handler_flags argument was added.
4967a3eb	226	dnl #
61d482f7	227	AC_MSG_RESULT(no)
608f8749 BB	228	AC_MSG_CHECKING(
	229	[whether xattr_handler->set() wants dentry])
	230	ZFS_LINUX_TEST_RESULT([xattr_handler_set_dentry], [
4967a3eb	231	AC_MSG_RESULT(yes)
8fbbc6b4 BB	232	AC_DEFINE(HAVE_XATTR_SET_DENTRY, 1,
8fbbc6b4 BB	233	[xattr_handler->set() wants dentry])
4967a3eb	234	],[
066e8252	235	ZFS_LINUX_TEST_ERROR([xattr set()])
4967a3eb	236	])
61d482f7	237	])
f9637c6c BB	238	])
f9637c6c BB	239	])
023699cd MM	240
023699cd MM	241	dnl #
4967a3eb	242	dnl # Supported xattr handler list() interfaces checked newest to oldest.
61d482f7	243	dnl #
608f8749 BB	244	AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_LIST], [
608f8749 BB	245	ZFS_LINUX_TEST_SRC([xattr_handler_list_simple], [
023699cd MM	246	#include <linux/xattr.h>
023699cd MM	247
4967a3eb	248	bool list(struct dentry *dentry) { return 0; }
023699cd MM	249	static const struct xattr_handler
	250	xops __attribute__ ((unused)) = {
	251	.list = list,
	252	};
608f8749 BB	253	],[])
	254
	255	ZFS_LINUX_TEST_SRC([xattr_handler_list_xattr_handler], [
	256	#include <linux/xattr.h>
	257
	258	size_t list(const struct xattr_handler *handler,
	259	struct dentry dentry, char list, size_t list_size,
	260	const char *name, size_t name_len) { return 0; }
	261	static const struct xattr_handler
	262	xops __attribute__ ((unused)) = {
	263	.list = list,
	264	};
	265	],[])
	266
	267	ZFS_LINUX_TEST_SRC([xattr_handler_list_dentry], [
	268	#include <linux/xattr.h>
	269
	270	size_t list(struct dentry *dentry,
	271	char *list, size_t list_size,
	272	const char *name, size_t name_len,
	273	int handler_flags) { return 0; }
	274	static const struct xattr_handler
	275	xops __attribute__ ((unused)) = {
	276	.list = list,
	277	};
	278	],[])
608f8749 BB	279	])
	280
	281	AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_LIST], [
	282	dnl # 4.5 API change,
	283	dnl # The xattr_handler->list() callback was changed to take only a
	284	dnl # dentry and it only needs to return if it's accessible.
	285	AC_MSG_CHECKING([whether xattr_handler->list() wants simple])
	286	ZFS_LINUX_TEST_RESULT([xattr_handler_list_simple], [
023699cd	287	AC_MSG_RESULT(yes)
4967a3eb BB	288	AC_DEFINE(HAVE_XATTR_LIST_SIMPLE, 1,
4967a3eb BB	289	[xattr_handler->list() wants simple])
023699cd	290	],[
4967a3eb BB	291	dnl #
	292	dnl # 4.4 API change,
	293	dnl # The xattr_handler->list() callback was changed to take a
	294	dnl # xattr_handler, and handler_flags argument was removed
	295	dnl # and should be accessed by handler->flags.
	296	dnl #
023699cd	297	AC_MSG_RESULT(no)
4967a3eb BB	298	AC_MSG_CHECKING(
4967a3eb BB	299	[whether xattr_handler->list() wants xattr_handler])
608f8749	300	ZFS_LINUX_TEST_RESULT([xattr_handler_list_xattr_handler], [
61d482f7	301	AC_MSG_RESULT(yes)
4967a3eb	302	AC_DEFINE(HAVE_XATTR_LIST_HANDLER, 1,
61d482f7 CC	303	[xattr_handler->list() wants xattr_handler])
61d482f7 CC	304	],[
4967a3eb BB	305	dnl #
	306	dnl # 2.6.33 API change,
	307	dnl # The xattr_handler->list() callback was changed
	308	dnl # to take a dentry instead of an inode, and a
	309	dnl # handler_flags argument was added.
	310	dnl #
61d482f7	311	AC_MSG_RESULT(no)
4967a3eb BB	312	AC_MSG_CHECKING(
4967a3eb BB	313	[whether xattr_handler->list() wants dentry])
608f8749	314	ZFS_LINUX_TEST_RESULT([xattr_handler_list_dentry], [
4967a3eb BB	315	AC_MSG_RESULT(yes)
	316	AC_DEFINE(HAVE_XATTR_LIST_DENTRY, 1,
	317	[xattr_handler->list() wants dentry])
	318	],[
066e8252	319	ZFS_LINUX_TEST_ERROR([xattr list()])
4967a3eb	320	])
61d482f7	321	])
023699cd MM	322	])
	323	])
	324
	325	dnl #
	326	dnl # 3.7 API change,
	327	dnl # The posix_acl_{from,to}_xattr functions gained a new
	328	dnl # parameter: user_ns
	329	dnl #
608f8749 BB	330	AC_DEFUN([ZFS_AC_KERNEL_SRC_POSIX_ACL_FROM_XATTR_USERNS], [
608f8749 BB	331	ZFS_LINUX_TEST_SRC([posix_acl_from_xattr_userns], [
023699cd MM	332	#include <linux/cred.h>
	333	#include <linux/fs.h>
	334	#include <linux/posix_acl_xattr.h>
	335	],[
	336	posix_acl_from_xattr(&init_user_ns, NULL, 0);
608f8749 BB	337	])
	338	])
	339
	340	AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_FROM_XATTR_USERNS], [
	341	AC_MSG_CHECKING([whether posix_acl_from_xattr() needs user_ns])
	342	ZFS_LINUX_TEST_RESULT([posix_acl_from_xattr_userns], [
023699cd MM	343	AC_MSG_RESULT(yes)
	344	AC_DEFINE(HAVE_POSIX_ACL_FROM_XATTR_USERNS, 1,
	345	[posix_acl_from_xattr() needs user_ns])
	346	],[
066e8252	347	ZFS_LINUX_TEST_ERROR([posix_acl_from_xattr()])
023699cd MM	348	])
	349	])
	350
608f8749 BB	351	dnl #
	352	dnl # 4.9 API change,
	353	dnl # iops->{set,get,remove}xattr and generic_{set,get,remove}xattr are
	354	dnl # removed. xattr operations will directly go through sb->s_xattr.
	355	dnl #
	356	AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_SETXATTR], [
	357	ZFS_LINUX_TEST_SRC([have_generic_setxattr], [
	358	#include <linux/fs.h>
	359	#include <linux/xattr.h>
	360
	361	static const struct inode_operations
	362	iops __attribute__ ((unused)) = {
	363	.setxattr = generic_setxattr
	364	};
	365	],[])
	366	])
	367
	368	AC_DEFUN([ZFS_AC_KERNEL_GENERIC_SETXATTR], [
	369	AC_MSG_CHECKING([whether generic_setxattr() exists])
	370	ZFS_LINUX_TEST_RESULT([have_generic_setxattr], [
	371	AC_MSG_RESULT(yes)
	372	AC_DEFINE(HAVE_GENERIC_SETXATTR, 1,
	373	[generic_setxattr() exists])
	374	],[
	375	AC_MSG_RESULT(no)
	376	])
	377	])
	378
	379	AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR], [
	380	ZFS_AC_KERNEL_SRC_CONST_XATTR_HANDLER
	381	ZFS_AC_KERNEL_SRC_XATTR_HANDLER_NAME
	382	ZFS_AC_KERNEL_SRC_XATTR_HANDLER_GET
	383	ZFS_AC_KERNEL_SRC_XATTR_HANDLER_SET
	384	ZFS_AC_KERNEL_SRC_XATTR_HANDLER_LIST
	385	ZFS_AC_KERNEL_SRC_POSIX_ACL_FROM_XATTR_USERNS
	386	ZFS_AC_KERNEL_SRC_GENERIC_SETXATTR
	387	])
	388
	389	AC_DEFUN([ZFS_AC_KERNEL_XATTR], [
	390	ZFS_AC_KERNEL_CONST_XATTR_HANDLER
	391	ZFS_AC_KERNEL_XATTR_HANDLER_NAME
	392	ZFS_AC_KERNEL_XATTR_HANDLER_GET
	393	ZFS_AC_KERNEL_XATTR_HANDLER_SET
	394	ZFS_AC_KERNEL_XATTR_HANDLER_LIST
	395	ZFS_AC_KERNEL_POSIX_ACL_FROM_XATTR_USERNS
	396	ZFS_AC_KERNEL_GENERIC_SETXATTR
	397	])