Relocate common quota functions to shared code

The quota functions are common to all implementations and can be
moved to common code.  As a simplification they were moved to the
Linux platform code in the initial refactoring.

Reviewed-by: Jorgen Lundman <lundman@lundman.net>
Reviewed-by: Igor Kozhukhov <igor@dilos.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes openzfs#9710

include/os/linux/zfs/sys/zfs_vfsops.h

@@ -198,18 +198,6 @@ extern int zfs_suspend_fs(zfsvfs_t *zfsvfs);
 extern int zfs_resume_fs(zfsvfs_t *zfsvfs, struct dsl_dataset *ds);
 extern int zfs_end_fs(zfsvfs_t *zfsvfs, struct dsl_dataset *ds);
 extern void zfs_exit_fs(zfsvfs_t *zfsvfs);
-extern int zfs_userspace_one(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
-    const char *domain, uint64_t rid, uint64_t *valuep);
-extern int zfs_userspace_many(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
-    uint64_t *cookiep, void *vbuf, uint64_t *bufsizep);
-extern int zfs_set_userquota(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
-    const char *domain, uint64_t rid, uint64_t quota);
-extern boolean_t zfs_id_overblockquota(zfsvfs_t *zfsvfs, uint64_t usedobj,
-    uint64_t id);
-extern boolean_t zfs_id_overobjquota(zfsvfs_t *zfsvfs, uint64_t usedobj,
-    uint64_t id);
-extern boolean_t zfs_id_overquota(zfsvfs_t *zfsvfs, uint64_t usedobj,
-    uint64_t id);
 extern int zfs_set_version(zfsvfs_t *zfsvfs, uint64_t newvers);
 extern int zfsvfs_create(const char *name, boolean_t readony, zfsvfs_t **zfvp);
 extern int zfsvfs_create_impl(zfsvfs_t **zfvp, zfsvfs_t *zfsvfs, objset_t *os);

include/sys/Makefile.am

@@ -107,6 +107,7 @@ COMMON_H = \
 	$(top_srcdir)/include/sys/zfs_file.h \
 	$(top_srcdir)/include/sys/zfs_fuid.h \
 	$(top_srcdir)/include/sys/zfs_project.h \
+	$(top_srcdir)/include/sys/zfs_quota.h \
 	$(top_srcdir)/include/sys/zfs_ratelimit.h \
 	$(top_srcdir)/include/sys/zfs_rlock.h \
 	$(top_srcdir)/include/sys/zfs_sa.h \

include/sys/zfs_fuid.h

@@ -116,6 +116,8 @@ extern int zfs_fuid_find_by_domain(zfsvfs_t *, const char *domain,
     char **retdomain, boolean_t addok);
 extern const char *zfs_fuid_find_by_idx(zfsvfs_t *zfsvfs, uint32_t idx);
 extern void zfs_fuid_txhold(zfsvfs_t *zfsvfs, dmu_tx_t *tx);
+extern int zfs_id_to_fuidstr(zfsvfs_t *zfsvfs, const char *domain, uid_t rid,
+    char *buf, boolean_t addok);
 #endif
 
 char *zfs_fuid_idx_domain(avl_tree_t *, uint32_t);

include/sys/zfs_quota.h

@@ -0,0 +1,46 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+#ifndef _SYS_ZFS_QUOTA_H
+#define	_SYS_ZFS_QUOTA_H
+
+#include <sys/dmu.h>
+#include <sys/fs/zfs.h>
+#include <sys/zfs_vfsops.h>
+
+extern int zfs_space_delta_cb(dmu_object_type_t bonustype, void *data,
+    uint64_t *userp, uint64_t *groupp, uint64_t *projectp);
+
+extern int zfs_userspace_one(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
+    const char *domain, uint64_t rid, uint64_t *valuep);
+extern int zfs_userspace_many(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
+    uint64_t *cookiep, void *vbuf, uint64_t *bufsizep);
+extern int zfs_set_userquota(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
+    const char *domain, uint64_t rid, uint64_t quota);
+
+extern boolean_t zfs_id_overobjquota(zfsvfs_t *zfsvfs, uint64_t usedobj,
+    uint64_t id);
+extern boolean_t zfs_id_overblockquota(zfsvfs_t *zfsvfs, uint64_t usedobj,
+    uint64_t id);
+extern boolean_t zfs_id_overquota(zfsvfs_t *zfsvfs, uint64_t usedobj,
+    uint64_t id);
+
+#endif

module/os/linux/zfs/zfs_acl.c

@@ -42,6 +42,7 @@
 #include <sys/zfs_fuid.h>
 #include <sys/zfs_acl.h>
 #include <sys/zfs_dir.h>
+#include <sys/zfs_quota.h>
 #include <sys/zfs_vfsops.h>
 #include <sys/dmu.h>
 #include <sys/dnode.h>