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Diffstat (limited to 'uts/common/fs/zfs/sys/zfs_acl.h')
| -rw-r--r-- | uts/common/fs/zfs/sys/zfs_acl.h | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/uts/common/fs/zfs/sys/zfs_acl.h b/uts/common/fs/zfs/sys/zfs_acl.h new file mode 100644 index 000000000000..c1a0aeebdce4 --- /dev/null +++ b/uts/common/fs/zfs/sys/zfs_acl.h @@ -0,0 +1,245 @@ +/* + * 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> +#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 are store 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 + * thats 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 */ + int (*ace_data)(void *acep, void **datap); + /* ptr to data if any */ +} 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 *); +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 *, vtype_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_chown_setattr(struct znode *); + +#endif + +#ifdef __cplusplus +} +#endif +#endif /* _SYS_FS_ZFS_ACL_H */ |