[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,
		};
	],[])

	ZFS_LINUX_TEST_SRC([xattr_handler_get_dentry_inode_flags], [
		#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, int 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])
			],[
				dnl #
				dnl # Android API change,
				dnl # The xattr_handler->get() callback was
				dnl # changed to take dentry, inode and flags.
				dnl #
				AC_MSG_RESULT(no)
				AC_MSG_CHECKING(
				    [whether xattr_handler->get() wants dentry and inode and flags])
				ZFS_LINUX_TEST_RESULT([xattr_handler_get_dentry_inode_flags], [
					AC_MSG_RESULT(yes)
					AC_DEFINE(HAVE_XATTR_GET_DENTRY_INODE_FLAGS, 1,
					    [xattr_handler->get() wants dentry and inode and flags])
				],[
					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_userns], [
		#include <linux/xattr.h>

		int set(const struct xattr_handler *handler,
			struct user_namespace *mnt_userns,
			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_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 # 5.12 API change,
	dnl # The xattr_handler->set() callback was changed to 8 arguments, and
	dnl # struct user_namespace* was inserted as arg #2
	dnl #
	AC_MSG_CHECKING([whether xattr_handler->set() wants dentry, inode, and user_namespace])
	ZFS_LINUX_TEST_RESULT([xattr_handler_set_userns], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_XATTR_SET_USERNS, 1,
		    [xattr_handler->set() takes user_namespace])
	],[
		dnl #
		dnl # 4.7 API change,
		dnl # The xattr_handler->set() callback was changed to take both
		dnl # dentry and inode.
		dnl #
		AC_MSG_RESULT(no)
		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	],[])
238cd4b8 WH	103
	104	ZFS_LINUX_TEST_SRC([xattr_handler_get_dentry_inode_flags], [
	105	#include <linux/xattr.h>
	106
	107	int get(const struct xattr_handler *handler,
	108	struct dentry dentry, struct inode inode,
	109	const char name, void buffer,
	110	size_t size, int flags) { return 0; }
	111	static const struct xattr_handler
	112	xops __attribute__ ((unused)) = {
	113	.get = get,
	114	};
	115	],[])
608f8749 BB	116	])
	117
	118	AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_GET], [
	119	dnl #
	120	dnl # 4.7 API change,
	121	dnl # The xattr_handler->get() callback was changed to take both
	122	dnl # dentry and inode.
	123	dnl #
	124	AC_MSG_CHECKING([whether xattr_handler->get() wants dentry and inode])
	125	ZFS_LINUX_TEST_RESULT([xattr_handler_get_dentry_inode], [
f9637c6c	126	AC_MSG_RESULT(yes)
fd4c7b7a	127	AC_DEFINE(HAVE_XATTR_GET_DENTRY_INODE, 1,
8fbbc6b4	128	[xattr_handler->get() wants both dentry and inode])
f9637c6c	129	],[
4967a3eb	130	dnl #
fd4c7b7a CC	131	dnl # 4.4 API change,
	132	dnl # The xattr_handler->get() callback was changed to take a
	133	dnl # attr_handler, and handler_flags argument was removed and
	134	dnl # should be accessed by handler->flags.
4967a3eb	135	dnl #
d4701011	136	AC_MSG_RESULT(no)
608f8749 BB	137	AC_MSG_CHECKING(
	138	[whether xattr_handler->get() wants xattr_handler])
	139	ZFS_LINUX_TEST_RESULT([xattr_handler_get_xattr_handler], [
61d482f7	140	AC_MSG_RESULT(yes)
fd4c7b7a CC	141	AC_DEFINE(HAVE_XATTR_GET_HANDLER, 1,
fd4c7b7a CC	142	[xattr_handler->get() wants xattr_handler])
61d482f7	143	],[
4967a3eb	144	dnl #
fd4c7b7a	145	dnl # 2.6.33 API change,
608f8749 BB	146	dnl # The xattr_handler->get() callback was changed
	147	dnl # to take a dentry instead of an inode, and a
	148	dnl # handler_flags argument was added.
4967a3eb	149	dnl #
61d482f7	150	AC_MSG_RESULT(no)
608f8749 BB	151	AC_MSG_CHECKING(
	152	[whether xattr_handler->get() wants dentry])
	153	ZFS_LINUX_TEST_RESULT([xattr_handler_get_dentry], [
4967a3eb	154	AC_MSG_RESULT(yes)
fd4c7b7a CC	155	AC_DEFINE(HAVE_XATTR_GET_DENTRY, 1,
fd4c7b7a CC	156	[xattr_handler->get() wants dentry])
4967a3eb	157	],[
238cd4b8 WH	158	dnl #
	159	dnl # Android API change,
	160	dnl # The xattr_handler->get() callback was
	161	dnl # changed to take dentry, inode and flags.
	162	dnl #
	163	AC_MSG_RESULT(no)
	164	AC_MSG_CHECKING(
	165	[whether xattr_handler->get() wants dentry and inode and flags])
	166	ZFS_LINUX_TEST_RESULT([xattr_handler_get_dentry_inode_flags], [
	167	AC_MSG_RESULT(yes)
	168	AC_DEFINE(HAVE_XATTR_GET_DENTRY_INODE_FLAGS, 1,
	169	[xattr_handler->get() wants dentry and inode and flags])
	170	],[
	171	ZFS_LINUX_TEST_ERROR([xattr get()])
	172	])
4967a3eb	173	])
61d482f7	174	])
f9637c6c BB	175	])
	176	])
	177
	178	dnl #
4967a3eb	179	dnl # Supported xattr handler set() interfaces checked newest to oldest.
61d482f7	180	dnl #
608f8749	181	AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_SET], [
e2a82961 CK	182	ZFS_LINUX_TEST_SRC([xattr_handler_set_userns], [
	183	#include <linux/xattr.h>
	184
	185	int set(const struct xattr_handler *handler,
	186	struct user_namespace *mnt_userns,
	187	struct dentry dentry, struct inode inode,
	188	const char name, const void buffer,
	189	size_t size, int flags)
	190	{ return 0; }
	191	static const struct xattr_handler
	192	xops __attribute__ ((unused)) = {
	193	.set = set,
	194	};
	195	],[])
	196
608f8749	197	ZFS_LINUX_TEST_SRC([xattr_handler_set_dentry_inode], [
f9637c6c	198	#include <linux/xattr.h>
f9637c6c	199
4967a3eb	200	int set(const struct xattr_handler *handler,
8fbbc6b4 BB	201	struct dentry dentry, struct inode inode,
	202	const char name, const void buffer,
	203	size_t size, int flags)
4967a3eb	204	{ return 0; }
b83e3e48 RY	205	static const struct xattr_handler
	206	xops __attribute__ ((unused)) = {
	207	.set = set,
	208	};
608f8749 BB	209	],[])
	210
	211	ZFS_LINUX_TEST_SRC([xattr_handler_set_xattr_handler], [
	212	#include <linux/xattr.h>
	213
	214	int set(const struct xattr_handler *handler,
	215	struct dentry dentry, const char name,
	216	const void *buffer, size_t size, int flags)
	217	{ return 0; }
	218	static const struct xattr_handler
	219	xops __attribute__ ((unused)) = {
	220	.set = set,
	221	};
	222	],[])
	223
	224	ZFS_LINUX_TEST_SRC([xattr_handler_set_dentry], [
	225	#include <linux/xattr.h>
	226
	227	int set(struct dentry dentry, const char name,
	228	const void *buffer, size_t size, int flags,
	229	int handler_flags) { return 0; }
	230	static const struct xattr_handler
	231	xops __attribute__ ((unused)) = {
	232	.set = set,
	233	};
	234	],[])
608f8749 BB	235	])
	236
	237	AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_SET], [
	238	dnl #
e2a82961 CK	239	dnl # 5.12 API change,
	240	dnl # The xattr_handler->set() callback was changed to 8 arguments, and
	241	dnl # struct user_namespace* was inserted as arg #2
608f8749	242	dnl #
e2a82961 CK	243	AC_MSG_CHECKING([whether xattr_handler->set() wants dentry, inode, and user_namespace])
e2a82961 CK	244	ZFS_LINUX_TEST_RESULT([xattr_handler_set_userns], [
f9637c6c	245	AC_MSG_RESULT(yes)
e2a82961 CK	246	AC_DEFINE(HAVE_XATTR_SET_USERNS, 1,
e2a82961 CK	247	[xattr_handler->set() takes user_namespace])
f9637c6c	248	],[
4967a3eb	249	dnl #
e2a82961 CK	250	dnl # 4.7 API change,
	251	dnl # The xattr_handler->set() callback was changed to take both
	252	dnl # dentry and inode.
4967a3eb	253	dnl #
d4701011	254	AC_MSG_RESULT(no)
e2a82961 CK	255	AC_MSG_CHECKING([whether xattr_handler->set() wants dentry and inode])
e2a82961 CK	256	ZFS_LINUX_TEST_RESULT([xattr_handler_set_dentry_inode], [
61d482f7	257	AC_MSG_RESULT(yes)
e2a82961 CK	258	AC_DEFINE(HAVE_XATTR_SET_DENTRY_INODE, 1,
e2a82961 CK	259	[xattr_handler->set() wants both dentry and inode])
61d482f7	260	],[
4967a3eb	261	dnl #
e2a82961 CK	262	dnl # 4.4 API change,
	263	dnl # The xattr_handler->set() callback was changed to take a
	264	dnl # xattr_handler, and handler_flags argument was removed and
	265	dnl # should be accessed by handler->flags.
4967a3eb	266	dnl #
61d482f7	267	AC_MSG_RESULT(no)
608f8749	268	AC_MSG_CHECKING(
e2a82961 CK	269	[whether xattr_handler->set() wants xattr_handler])
e2a82961 CK	270	ZFS_LINUX_TEST_RESULT([xattr_handler_set_xattr_handler], [
4967a3eb	271	AC_MSG_RESULT(yes)
e2a82961 CK	272	AC_DEFINE(HAVE_XATTR_SET_HANDLER, 1,
e2a82961 CK	273	[xattr_handler->set() wants xattr_handler])
4967a3eb	274	],[
e2a82961 CK	275	dnl #
	276	dnl # 2.6.33 API change,
	277	dnl # The xattr_handler->set() callback was changed
	278	dnl # to take a dentry instead of an inode, and a
	279	dnl # handler_flags argument was added.
	280	dnl #
	281	AC_MSG_RESULT(no)
	282	AC_MSG_CHECKING(
	283	[whether xattr_handler->set() wants dentry])
	284	ZFS_LINUX_TEST_RESULT([xattr_handler_set_dentry], [
	285	AC_MSG_RESULT(yes)
	286	AC_DEFINE(HAVE_XATTR_SET_DENTRY, 1,
	287	[xattr_handler->set() wants dentry])
	288	],[
	289	ZFS_LINUX_TEST_ERROR([xattr set()])
	290	])
4967a3eb	291	])
61d482f7	292	])
f9637c6c BB	293	])
f9637c6c BB	294	])
023699cd MM	295
023699cd MM	296	dnl #
4967a3eb	297	dnl # Supported xattr handler list() interfaces checked newest to oldest.
61d482f7	298	dnl #
608f8749 BB	299	AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_LIST], [
608f8749 BB	300	ZFS_LINUX_TEST_SRC([xattr_handler_list_simple], [
023699cd MM	301	#include <linux/xattr.h>
023699cd MM	302
4967a3eb	303	bool list(struct dentry *dentry) { return 0; }
023699cd MM	304	static const struct xattr_handler
	305	xops __attribute__ ((unused)) = {
	306	.list = list,
	307	};
608f8749 BB	308	],[])
	309
	310	ZFS_LINUX_TEST_SRC([xattr_handler_list_xattr_handler], [
	311	#include <linux/xattr.h>
	312
	313	size_t list(const struct xattr_handler *handler,
	314	struct dentry dentry, char list, size_t list_size,
	315	const char *name, size_t name_len) { return 0; }
	316	static const struct xattr_handler
	317	xops __attribute__ ((unused)) = {
	318	.list = list,
	319	};
	320	],[])
	321
	322	ZFS_LINUX_TEST_SRC([xattr_handler_list_dentry], [
	323	#include <linux/xattr.h>
	324
	325	size_t list(struct dentry *dentry,
	326	char *list, size_t list_size,
	327	const char *name, size_t name_len,
	328	int handler_flags) { return 0; }
	329	static const struct xattr_handler
	330	xops __attribute__ ((unused)) = {
	331	.list = list,
	332	};
	333	],[])
608f8749 BB	334	])
	335
	336	AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_LIST], [
	337	dnl # 4.5 API change,
	338	dnl # The xattr_handler->list() callback was changed to take only a
	339	dnl # dentry and it only needs to return if it's accessible.
	340	AC_MSG_CHECKING([whether xattr_handler->list() wants simple])
	341	ZFS_LINUX_TEST_RESULT([xattr_handler_list_simple], [
023699cd	342	AC_MSG_RESULT(yes)
4967a3eb BB	343	AC_DEFINE(HAVE_XATTR_LIST_SIMPLE, 1,
4967a3eb BB	344	[xattr_handler->list() wants simple])
023699cd	345	],[
4967a3eb BB	346	dnl #
	347	dnl # 4.4 API change,
	348	dnl # The xattr_handler->list() callback was changed to take a
	349	dnl # xattr_handler, and handler_flags argument was removed
	350	dnl # and should be accessed by handler->flags.
	351	dnl #
023699cd	352	AC_MSG_RESULT(no)
4967a3eb BB	353	AC_MSG_CHECKING(
4967a3eb BB	354	[whether xattr_handler->list() wants xattr_handler])
608f8749	355	ZFS_LINUX_TEST_RESULT([xattr_handler_list_xattr_handler], [
61d482f7	356	AC_MSG_RESULT(yes)
4967a3eb	357	AC_DEFINE(HAVE_XATTR_LIST_HANDLER, 1,
61d482f7 CC	358	[xattr_handler->list() wants xattr_handler])
61d482f7 CC	359	],[
4967a3eb BB	360	dnl #
	361	dnl # 2.6.33 API change,
	362	dnl # The xattr_handler->list() callback was changed
	363	dnl # to take a dentry instead of an inode, and a
	364	dnl # handler_flags argument was added.
	365	dnl #
61d482f7	366	AC_MSG_RESULT(no)
4967a3eb BB	367	AC_MSG_CHECKING(
4967a3eb BB	368	[whether xattr_handler->list() wants dentry])
608f8749	369	ZFS_LINUX_TEST_RESULT([xattr_handler_list_dentry], [
4967a3eb BB	370	AC_MSG_RESULT(yes)
	371	AC_DEFINE(HAVE_XATTR_LIST_DENTRY, 1,
	372	[xattr_handler->list() wants dentry])
	373	],[
066e8252	374	ZFS_LINUX_TEST_ERROR([xattr list()])
4967a3eb	375	])
61d482f7	376	])
023699cd MM	377	])
	378	])
	379
	380	dnl #
	381	dnl # 3.7 API change,
	382	dnl # The posix_acl_{from,to}_xattr functions gained a new
	383	dnl # parameter: user_ns
	384	dnl #
608f8749 BB	385	AC_DEFUN([ZFS_AC_KERNEL_SRC_POSIX_ACL_FROM_XATTR_USERNS], [
608f8749 BB	386	ZFS_LINUX_TEST_SRC([posix_acl_from_xattr_userns], [
023699cd MM	387	#include <linux/cred.h>
	388	#include <linux/fs.h>
	389	#include <linux/posix_acl_xattr.h>
	390	],[
	391	posix_acl_from_xattr(&init_user_ns, NULL, 0);
608f8749 BB	392	])
	393	])
	394
	395	AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_FROM_XATTR_USERNS], [
	396	AC_MSG_CHECKING([whether posix_acl_from_xattr() needs user_ns])
	397	ZFS_LINUX_TEST_RESULT([posix_acl_from_xattr_userns], [
023699cd MM	398	AC_MSG_RESULT(yes)
	399	AC_DEFINE(HAVE_POSIX_ACL_FROM_XATTR_USERNS, 1,
	400	[posix_acl_from_xattr() needs user_ns])
	401	],[
066e8252	402	ZFS_LINUX_TEST_ERROR([posix_acl_from_xattr()])
023699cd MM	403	])
	404	])
	405
608f8749 BB	406	dnl #
	407	dnl # 4.9 API change,
	408	dnl # iops->{set,get,remove}xattr and generic_{set,get,remove}xattr are
	409	dnl # removed. xattr operations will directly go through sb->s_xattr.
	410	dnl #
	411	AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_SETXATTR], [
	412	ZFS_LINUX_TEST_SRC([have_generic_setxattr], [
	413	#include <linux/fs.h>
	414	#include <linux/xattr.h>
	415
	416	static const struct inode_operations
	417	iops __attribute__ ((unused)) = {
	418	.setxattr = generic_setxattr
	419	};
	420	],[])
	421	])
	422
	423	AC_DEFUN([ZFS_AC_KERNEL_GENERIC_SETXATTR], [
	424	AC_MSG_CHECKING([whether generic_setxattr() exists])
	425	ZFS_LINUX_TEST_RESULT([have_generic_setxattr], [
	426	AC_MSG_RESULT(yes)
	427	AC_DEFINE(HAVE_GENERIC_SETXATTR, 1,
	428	[generic_setxattr() exists])
	429	],[
	430	AC_MSG_RESULT(no)
	431	])
	432	])
	433
	434	AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR], [
	435	ZFS_AC_KERNEL_SRC_CONST_XATTR_HANDLER
	436	ZFS_AC_KERNEL_SRC_XATTR_HANDLER_NAME
	437	ZFS_AC_KERNEL_SRC_XATTR_HANDLER_GET
	438	ZFS_AC_KERNEL_SRC_XATTR_HANDLER_SET
	439	ZFS_AC_KERNEL_SRC_XATTR_HANDLER_LIST
	440	ZFS_AC_KERNEL_SRC_POSIX_ACL_FROM_XATTR_USERNS
	441	ZFS_AC_KERNEL_SRC_GENERIC_SETXATTR
	442	])
	443
	444	AC_DEFUN([ZFS_AC_KERNEL_XATTR], [
	445	ZFS_AC_KERNEL_CONST_XATTR_HANDLER
	446	ZFS_AC_KERNEL_XATTR_HANDLER_NAME
	447	ZFS_AC_KERNEL_XATTR_HANDLER_GET
	448	ZFS_AC_KERNEL_XATTR_HANDLER_SET
	449	ZFS_AC_KERNEL_XATTR_HANDLER_LIST
	450	ZFS_AC_KERNEL_POSIX_ACL_FROM_XATTR_USERNS
	451	ZFS_AC_KERNEL_GENERIC_SETXATTR
	452	])