1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_FS_ZFS_FUID_H 27 #define _SYS_FS_ZFS_FUID_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #include <sys/isa_defs.h> 32 #include <sys/types32.h> 33 #ifdef _KERNEL 34 #include <sys/kidmap.h> 35 #include <sys/sid.h> 36 #include <sys/dmu.h> 37 #include <sys/zfs_vfsops.h> 38 #endif 39 40 #ifdef _KERNEL 41 typedef struct zfs_fuid_hdl { 42 idmap_get_handle_t *z_hdl; 43 boolean_t z_map_needed; /* is mapping required */ 44 idmap_stat z_status; /* needed for kidmap interface */ 45 } zfs_fuid_hdl_t; 46 47 typedef enum { 48 ZFS_OWNER, 49 ZFS_GROUP, 50 ZFS_ACE_USER, 51 ZFS_ACE_GROUP 52 } zfs_fuid_type_t; 53 54 #endif 55 56 57 #define FUID_INDEX(x) (x >> 32) 58 #define FUID_RID(x) (x & 0xffffffff) 59 #define FUID_ENCODE(idx, rid) ((idx << 32) | rid) 60 /* 61 * FUIDs cause problems for the intent log 62 * we need to replay the creation of the FUID, 63 * but we can't count on the idmapper to be around 64 * and during replay the FUID index may be different than 65 * before. Also, if an ACL has 100 ACEs and 12 different 66 * domains we don't want to log 100 domain strings, but rather 67 * just the unique 12. 68 */ 69 70 /* 71 * The FUIDs in the log will index into 72 * domain string table and the bottom half will be the rid. 73 * Used for mapping ephemeral uid/gid during ACL setting to FUIDs 74 */ 75 typedef struct zfs_fuid { 76 list_node_t z_next; 77 uint64_t z_id; /* uid/gid being converted to fuid */ 78 uint64_t z_domidx; /* index in AVL domain table */ 79 uint64_t z_logfuid; /* index for domain in log */ 80 } zfs_fuid_t; 81 82 /* list of unique domains */ 83 typedef struct zfs_fuid_domain { 84 list_node_t z_next; 85 uint64_t z_domidx; /* AVL tree idx */ 86 const char *z_domain; /* domain string */ 87 } zfs_fuid_domain_t; 88 89 /* 90 * FUID information necessary for logging create, setattr, and setacl. 91 */ 92 typedef struct zfs_fuid_info { 93 list_t z_fuids; 94 list_t z_domains; 95 uint64_t z_fuid_owner; 96 uint64_t z_fuid_group; 97 char **z_domain_table; /* Used during replay */ 98 uint32_t z_fuid_cnt; /* How many fuids in z_fuids */ 99 uint32_t z_domain_cnt; /* How many domains */ 100 size_t z_domain_str_sz; /* len of domain strings z_domain list */ 101 } zfs_fuid_info_t; 102 103 #ifdef _KERNEL 104 struct znode; 105 extern void zfs_fuid_map_id(zfsvfs_t *, uint64_t, zfs_fuid_type_t, uid_t *); 106 extern void zfs_fuid_destroy(zfsvfs_t *); 107 extern uint64_t zfs_fuid_create_cred(zfsvfs_t *, uint64_t, zfs_fuid_type_t, 108 dmu_tx_t *, cred_t *, zfs_fuid_info_t **); 109 extern uint64_t zfs_fuid_create(zfsvfs_t *, uint64_t, zfs_fuid_type_t, 110 dmu_tx_t *, zfs_fuid_info_t **); 111 extern void zfs_fuid_queue_map_id(zfsvfs_t *zfsvfs, zfs_fuid_hdl_t *, 112 uint64_t, zfs_fuid_type_t, uid_t *); 113 extern void zfs_fuid_map_ids(struct znode *zp, uid_t *uid, uid_t *gid); 114 extern void zfs_fuid_get_mappings(zfs_fuid_hdl_t *); 115 extern char *zfs_fuid_find_by_idx(zfsvfs_t *, uint64_t); 116 int zfs_fuid_find_by_domain(zfsvfs_t *, const char *, char **, dmu_tx_t *); 117 extern zfs_fuid_info_t *zfs_fuid_info_alloc(void); 118 extern void zfs_fuid_info_free(); 119 extern boolean_t zfs_groupmember(zfsvfs_t *, uint64_t, cred_t *); 120 121 #endif 122 123 #ifdef __cplusplus 124 extern "C" { 125 #endif 126 127 #ifdef __cplusplus 128 } 129 #endif 130 131 #endif /* _SYS_FS_ZFS_FUID_H */ 132