| /* |
| * 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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
| */ |
| |
| #ifndef _SYS_FS_ZFS_ACL_H |
| #define _SYS_FS_ZFS_ACL_H |
| |
| #ifdef _KERNEL |
| #include <sys/isa_defs.h> |
| #include <sys/types32.h> |
| #include <sys/xvattr.h> |
| #endif |
| #include <sys/acl.h> |
| #include <sys/dmu.h> |
| #include <sys/zfs_fuid.h> |
| #include <sys/sa.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| struct znode_phys; |
| |
| #define ACE_SLOT_CNT 6 |
| #define ZFS_ACL_VERSION_INITIAL 0ULL |
| #define ZFS_ACL_VERSION_FUID 1ULL |
| #define ZFS_ACL_VERSION ZFS_ACL_VERSION_FUID |
| |
| /* |
| * ZFS ACLs (Access Control Lists) are stored in various forms. |
| * |
| * Files created with ACL version ZFS_ACL_VERSION_INITIAL |
| * will all be created with fixed length ACEs of type |
| * zfs_oldace_t. |
| * |
| * Files with ACL version ZFS_ACL_VERSION_FUID will be created |
| * with various sized ACEs. The abstraction entries will utilize |
| * zfs_ace_hdr_t, normal user/group entries will use zfs_ace_t |
| * and some specialized CIFS ACEs will use zfs_object_ace_t. |
| */ |
| |
| /* |
| * All ACEs have a common hdr. For |
| * owner@, group@, and everyone@ this is all |
| * that's needed. |
| */ |
| typedef struct zfs_ace_hdr { |
| uint16_t z_type; |
| uint16_t z_flags; |
| uint32_t z_access_mask; |
| } zfs_ace_hdr_t; |
| |
| typedef zfs_ace_hdr_t zfs_ace_abstract_t; |
| |
| /* |
| * Standard ACE |
| */ |
| typedef struct zfs_ace { |
| zfs_ace_hdr_t z_hdr; |
| uint64_t z_fuid; |
| } zfs_ace_t; |
| |
| /* |
| * The following type only applies to ACE_ACCESS_ALLOWED|DENIED_OBJECT_ACE_TYPE |
| * and will only be set/retrieved in a CIFS context. |
| */ |
| |
| typedef struct zfs_object_ace { |
| zfs_ace_t z_ace; |
| uint8_t z_object_type[16]; /* object type */ |
| uint8_t z_inherit_type[16]; /* inherited object type */ |
| } zfs_object_ace_t; |
| |
| typedef struct zfs_oldace { |
| uint32_t z_fuid; /* "who" */ |
| uint32_t z_access_mask; /* access mask */ |
| uint16_t z_flags; /* flags, i.e inheritance */ |
| uint16_t z_type; /* type of entry allow/deny */ |
| } zfs_oldace_t; |
| |
| typedef struct zfs_acl_phys_v0 { |
| uint64_t z_acl_extern_obj; /* ext acl pieces */ |
| uint32_t z_acl_count; /* Number of ACEs */ |
| uint16_t z_acl_version; /* acl version */ |
| uint16_t z_acl_pad; /* pad */ |
| zfs_oldace_t z_ace_data[ACE_SLOT_CNT]; /* 6 standard ACEs */ |
| } zfs_acl_phys_v0_t; |
| |
| #define ZFS_ACE_SPACE (sizeof (zfs_oldace_t) * ACE_SLOT_CNT) |
| |
| /* |
| * Size of ACL count is always 2 bytes. |
| * Necessary to for dealing with both V0 ACL and V1 ACL layout |
| */ |
| #define ZFS_ACL_COUNT_SIZE (sizeof (uint16_t)) |
| |
| typedef struct zfs_acl_phys { |
| uint64_t z_acl_extern_obj; /* ext acl pieces */ |
| uint32_t z_acl_size; /* Number of bytes in ACL */ |
| uint16_t z_acl_version; /* acl version */ |
| uint16_t z_acl_count; /* ace count */ |
| uint8_t z_ace_data[ZFS_ACE_SPACE]; /* space for embedded ACEs */ |
| } zfs_acl_phys_t; |
| |
| typedef struct acl_ops { |
| uint32_t (*ace_mask_get) (void *acep); /* get access mask */ |
| void (*ace_mask_set) (void *acep, |
| uint32_t mask); /* set access mask */ |
| uint16_t (*ace_flags_get) (void *acep); /* get flags */ |
| void (*ace_flags_set) (void *acep, |
| uint16_t flags); /* set flags */ |
| uint16_t (*ace_type_get)(void *acep); /* get type */ |
| void (*ace_type_set)(void *acep, |
| uint16_t type); /* set type */ |
| uint64_t (*ace_who_get)(void *acep); /* get who/fuid */ |
| void (*ace_who_set)(void *acep, |
| uint64_t who); /* set who/fuid */ |
| size_t (*ace_size)(void *acep); /* how big is this ace */ |
| size_t (*ace_abstract_size)(void); /* sizeof abstract entry */ |
| int (*ace_mask_off)(void); /* off of access mask in ace */ |
| /* ptr to data if any */ |
| int (*ace_data)(void *acep, void **datap); |
| } acl_ops_t; |
| |
| /* |
| * A zfs_acl_t structure is composed of a list of zfs_acl_node_t's. |
| * Each node will have one or more ACEs associated with it. You will |
| * only have multiple nodes during a chmod operation. Normally only |
| * one node is required. |
| */ |
| typedef struct zfs_acl_node { |
| list_node_t z_next; /* Next chunk of ACEs */ |
| void *z_acldata; /* pointer into actual ACE(s) */ |
| void *z_allocdata; /* pointer to kmem allocated memory */ |
| size_t z_allocsize; /* Size of blob in bytes */ |
| size_t z_size; /* length of ACL data */ |
| uint64_t z_ace_count; /* number of ACEs in this acl node */ |
| int z_ace_idx; /* ace iterator positioned on */ |
| } zfs_acl_node_t; |
| |
| typedef struct zfs_acl { |
| uint64_t z_acl_count; /* Number of ACEs */ |
| size_t z_acl_bytes; /* Number of bytes in ACL */ |
| uint_t z_version; /* version of ACL */ |
| void *z_next_ace; /* pointer to next ACE */ |
| uint64_t z_hints; /* ACL hints (ZFS_INHERIT_ACE ...) */ |
| zfs_acl_node_t *z_curr_node; /* current node iterator is handling */ |
| list_t z_acl; /* chunks of ACE data */ |
| acl_ops_t *z_ops; /* ACL operations */ |
| } zfs_acl_t; |
| |
| typedef struct acl_locator_cb { |
| zfs_acl_t *cb_aclp; |
| zfs_acl_node_t *cb_acl_node; |
| } zfs_acl_locator_cb_t; |
| |
| #define ACL_DATA_ALLOCED 0x1 |
| #define ZFS_ACL_SIZE(aclcnt) (sizeof (ace_t) * (aclcnt)) |
| |
| struct zfs_fuid_info; |
| |
| typedef struct zfs_acl_ids { |
| uint64_t z_fuid; /* file owner fuid */ |
| uint64_t z_fgid; /* file group owner fuid */ |
| uint64_t z_mode; /* mode to set on create */ |
| zfs_acl_t *z_aclp; /* ACL to create with file */ |
| struct zfs_fuid_info *z_fuidp; /* for tracking fuids for log */ |
| } zfs_acl_ids_t; |
| |
| /* |
| * Property values for acl_mode and acl_inherit. |
| * |
| * acl_mode can take discard, noallow, groupmask and passthrough. |
| * whereas acl_inherit has secure instead of groupmask. |
| */ |
| |
| #define ZFS_ACL_DISCARD 0 |
| #define ZFS_ACL_NOALLOW 1 |
| #define ZFS_ACL_GROUPMASK 2 |
| #define ZFS_ACL_PASSTHROUGH 3 |
| #define ZFS_ACL_RESTRICTED 4 |
| #define ZFS_ACL_PASSTHROUGH_X 5 |
| |
| struct znode; |
| struct zfsvfs; |
| |
| #ifdef _KERNEL |
| int zfs_acl_ids_create(struct znode *, int, vattr_t *, |
| cred_t *, vsecattr_t *, zfs_acl_ids_t *); |
| void zfs_acl_ids_free(zfs_acl_ids_t *); |
| boolean_t zfs_acl_ids_overquota(struct zfsvfs *, zfs_acl_ids_t *, uint64_t); |
| int zfs_getacl(struct znode *, vsecattr_t *, boolean_t, cred_t *); |
| int zfs_setacl(struct znode *, vsecattr_t *, boolean_t, cred_t *); |
| void zfs_acl_rele(void *); |
| void zfs_oldace_byteswap(ace_t *, int); |
| void zfs_ace_byteswap(void *, size_t, boolean_t); |
| extern boolean_t zfs_has_access(struct znode *zp, cred_t *cr); |
| extern int zfs_zaccess(struct znode *, int, int, boolean_t, cred_t *); |
| int zfs_fastaccesschk_execute(struct znode *, cred_t *); |
| extern int zfs_zaccess_rwx(struct znode *, mode_t, int, cred_t *); |
| extern int zfs_zaccess_unix(struct znode *, mode_t, cred_t *); |
| extern int zfs_acl_access(struct znode *, int, cred_t *); |
| void zfs_acl_chmod_setattr(struct znode *, zfs_acl_t **, uint64_t); |
| int zfs_zaccess_delete(struct znode *, struct znode *, cred_t *); |
| int zfs_zaccess_rename(struct znode *, struct znode *, |
| struct znode *, struct znode *, cred_t *cr); |
| void zfs_acl_free(zfs_acl_t *); |
| int zfs_vsec_2_aclp(struct zfsvfs *, umode_t, vsecattr_t *, cred_t *, |
| struct zfs_fuid_info **, zfs_acl_t **); |
| int zfs_aclset_common(struct znode *, zfs_acl_t *, cred_t *, dmu_tx_t *); |
| uint64_t zfs_external_acl(struct znode *); |
| int zfs_znode_acl_version(struct znode *); |
| int zfs_acl_size(struct znode *, int *); |
| zfs_acl_t *zfs_acl_alloc(int); |
| zfs_acl_node_t *zfs_acl_node_alloc(size_t); |
| void zfs_acl_xform(struct znode *, zfs_acl_t *, cred_t *); |
| void zfs_acl_data_locator(void **, uint32_t *, uint32_t, boolean_t, void *); |
| uint64_t zfs_mode_compute(uint64_t, zfs_acl_t *, |
| uint64_t *, uint64_t, uint64_t); |
| int zfs_acl_node_read(struct znode *, boolean_t, zfs_acl_t **, boolean_t); |
| int zfs_acl_chown_setattr(struct znode *); |
| |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| #endif /* _SYS_FS_ZFS_ACL_H */ |