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-rw-r--r--uts/common/fs/zfs/sys/zfs_fuid.h131
1 files changed, 131 insertions, 0 deletions
diff --git a/uts/common/fs/zfs/sys/zfs_fuid.h b/uts/common/fs/zfs/sys/zfs_fuid.h
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+++ b/uts/common/fs/zfs/sys/zfs_fuid.h
@@ -0,0 +1,131 @@
+/*
+ * 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
+ */
+/*
+ * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_FS_ZFS_FUID_H
+#define _SYS_FS_ZFS_FUID_H
+
+#ifdef _KERNEL
+#include <sys/kidmap.h>
+#include <sys/sid.h>
+#include <sys/dmu.h>
+#include <sys/zfs_vfsops.h>
+#endif
+#include <sys/avl.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+ ZFS_OWNER,
+ ZFS_GROUP,
+ ZFS_ACE_USER,
+ ZFS_ACE_GROUP
+} zfs_fuid_type_t;
+
+/*
+ * Estimate space needed for one more fuid table entry.
+ * for now assume its current size + 1K
+ */
+#define FUID_SIZE_ESTIMATE(z) ((z)->z_fuid_size + (SPA_MINBLOCKSIZE << 1))
+
+#define FUID_INDEX(x) ((x) >> 32)
+#define FUID_RID(x) ((x) & 0xffffffff)
+#define FUID_ENCODE(idx, rid) (((uint64_t)(idx) << 32) | (rid))
+/*
+ * FUIDs cause problems for the intent log
+ * we need to replay the creation of the FUID,
+ * but we can't count on the idmapper to be around
+ * and during replay the FUID index may be different than
+ * before. Also, if an ACL has 100 ACEs and 12 different
+ * domains we don't want to log 100 domain strings, but rather
+ * just the unique 12.
+ */
+
+/*
+ * The FUIDs in the log will index into
+ * domain string table and the bottom half will be the rid.
+ * Used for mapping ephemeral uid/gid during ACL setting to FUIDs
+ */
+typedef struct zfs_fuid {
+ list_node_t z_next;
+ uint64_t z_id; /* uid/gid being converted to fuid */
+ uint64_t z_domidx; /* index in AVL domain table */
+ uint64_t z_logfuid; /* index for domain in log */
+} zfs_fuid_t;
+
+/* list of unique domains */
+typedef struct zfs_fuid_domain {
+ list_node_t z_next;
+ uint64_t z_domidx; /* AVL tree idx */
+ const char *z_domain; /* domain string */
+} zfs_fuid_domain_t;
+
+/*
+ * FUID information necessary for logging create, setattr, and setacl.
+ */
+typedef struct zfs_fuid_info {
+ list_t z_fuids;
+ list_t z_domains;
+ uint64_t z_fuid_owner;
+ uint64_t z_fuid_group;
+ char **z_domain_table; /* Used during replay */
+ uint32_t z_fuid_cnt; /* How many fuids in z_fuids */
+ uint32_t z_domain_cnt; /* How many domains */
+ size_t z_domain_str_sz; /* len of domain strings z_domain list */
+} zfs_fuid_info_t;
+
+#ifdef _KERNEL
+struct znode;
+extern uid_t zfs_fuid_map_id(zfsvfs_t *, uint64_t, cred_t *, zfs_fuid_type_t);
+extern void zfs_fuid_node_add(zfs_fuid_info_t **, const char *, uint32_t,
+ uint64_t, uint64_t, zfs_fuid_type_t);
+extern void zfs_fuid_destroy(zfsvfs_t *);
+extern uint64_t zfs_fuid_create_cred(zfsvfs_t *, zfs_fuid_type_t,
+ cred_t *, zfs_fuid_info_t **);
+extern uint64_t zfs_fuid_create(zfsvfs_t *, uint64_t, cred_t *, zfs_fuid_type_t,
+ zfs_fuid_info_t **);
+extern void zfs_fuid_map_ids(struct znode *zp, cred_t *cr,
+ uid_t *uid, uid_t *gid);
+extern zfs_fuid_info_t *zfs_fuid_info_alloc(void);
+extern void zfs_fuid_info_free(zfs_fuid_info_t *);
+extern boolean_t zfs_groupmember(zfsvfs_t *, uint64_t, cred_t *);
+void zfs_fuid_sync(zfsvfs_t *, dmu_tx_t *);
+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);
+#endif
+
+char *zfs_fuid_idx_domain(avl_tree_t *, uint32_t);
+void zfs_fuid_avl_tree_create(avl_tree_t *, avl_tree_t *);
+uint64_t zfs_fuid_table_load(objset_t *, uint64_t, avl_tree_t *, avl_tree_t *);
+void zfs_fuid_table_destroy(avl_tree_t *, avl_tree_t *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_FS_ZFS_FUID_H */