130 lines
4.1 KiB
C
130 lines
4.1 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2010 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _SYS_FS_ZFS_FUID_H
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#define _SYS_FS_ZFS_FUID_H
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#ifdef _KERNEL
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#include <sys/sid.h>
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#include <sys/dmu.h>
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#include <sys/zfs_vfsops.h>
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#endif
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#include <sys/avl.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum {
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ZFS_OWNER,
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ZFS_GROUP,
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ZFS_ACE_USER,
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ZFS_ACE_GROUP
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} zfs_fuid_type_t;
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/*
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* Estimate space needed for one more fuid table entry.
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* for now assume its current size + 1K
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*/
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#define FUID_SIZE_ESTIMATE(z) ((z)->z_fuid_size + (SPA_MINBLOCKSIZE << 1))
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#define FUID_INDEX(x) ((x) >> 32)
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#define FUID_RID(x) ((x) & 0xffffffff)
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#define FUID_ENCODE(idx, rid) (((uint64_t)(idx) << 32) | (rid))
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/*
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* FUIDs cause problems for the intent log
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* we need to replay the creation of the FUID,
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* but we can't count on the idmapper to be around
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* and during replay the FUID index may be different than
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* before. Also, if an ACL has 100 ACEs and 12 different
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* domains we don't want to log 100 domain strings, but rather
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* just the unique 12.
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*/
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/*
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* The FUIDs in the log will index into
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* domain string table and the bottom half will be the rid.
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* Used for mapping ephemeral uid/gid during ACL setting to FUIDs
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*/
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typedef struct zfs_fuid {
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list_node_t z_next;
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uint64_t z_id; /* uid/gid being converted to fuid */
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uint64_t z_domidx; /* index in AVL domain table */
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uint64_t z_logfuid; /* index for domain in log */
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} zfs_fuid_t;
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/* list of unique domains */
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typedef struct zfs_fuid_domain {
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list_node_t z_next;
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uint64_t z_domidx; /* AVL tree idx */
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const char *z_domain; /* domain string */
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} zfs_fuid_domain_t;
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/*
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* FUID information necessary for logging create, setattr, and setacl.
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*/
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typedef struct zfs_fuid_info {
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list_t z_fuids;
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list_t z_domains;
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uint64_t z_fuid_owner;
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uint64_t z_fuid_group;
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char **z_domain_table; /* Used during replay */
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uint32_t z_fuid_cnt; /* How many fuids in z_fuids */
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uint32_t z_domain_cnt; /* How many domains */
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size_t z_domain_str_sz; /* len of domain strings z_domain list */
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} zfs_fuid_info_t;
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#ifdef _KERNEL
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struct znode;
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extern uid_t zfs_fuid_map_id(zfsvfs_t *, uint64_t, cred_t *, zfs_fuid_type_t);
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extern void zfs_fuid_node_add(zfs_fuid_info_t **, const char *, uint32_t,
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uint64_t, uint64_t, zfs_fuid_type_t);
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extern void zfs_fuid_destroy(zfsvfs_t *);
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extern uint64_t zfs_fuid_create_cred(zfsvfs_t *, zfs_fuid_type_t,
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cred_t *, zfs_fuid_info_t **);
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extern uint64_t zfs_fuid_create(zfsvfs_t *, uint64_t, cred_t *, zfs_fuid_type_t,
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zfs_fuid_info_t **);
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extern void zfs_fuid_map_ids(struct znode *zp, cred_t *cr,
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uid_t *uid, uid_t *gid);
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extern zfs_fuid_info_t *zfs_fuid_info_alloc(void);
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extern void zfs_fuid_info_free(zfs_fuid_info_t *);
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extern boolean_t zfs_groupmember(zfsvfs_t *, uint64_t, cred_t *);
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void zfs_fuid_sync(zfsvfs_t *, dmu_tx_t *);
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extern int zfs_fuid_find_by_domain(zfsvfs_t *, const char *domain,
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char **retdomain, boolean_t addok);
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extern const char *zfs_fuid_find_by_idx(zfsvfs_t *zfsvfs, uint32_t idx);
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extern void zfs_fuid_txhold(zfsvfs_t *zfsvfs, dmu_tx_t *tx);
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#endif
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char *zfs_fuid_idx_domain(avl_tree_t *, uint32_t);
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void zfs_fuid_avl_tree_create(avl_tree_t *, avl_tree_t *);
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uint64_t zfs_fuid_table_load(objset_t *, uint64_t, avl_tree_t *, avl_tree_t *);
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void zfs_fuid_table_destroy(avl_tree_t *, avl_tree_t *);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_FS_ZFS_FUID_H */
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