/* * 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 https://opensource.org/licenses/CDDL-1.0. * 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 #include #include #endif #include #include #include #include #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 */ const 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 *, zuserns_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 *, zuserns_t *); int zfs_fastaccesschk_execute(struct znode *, cred_t *); extern int zfs_zaccess_rwx(struct znode *, mode_t, int, cred_t *, zuserns_t *); extern int zfs_zaccess_unix(void *, int, cred_t *); extern int zfs_acl_access(struct znode *, int, cred_t *); int zfs_acl_chmod_setattr(struct znode *, zfs_acl_t **, uint64_t); int zfs_zaccess_delete(struct znode *, struct znode *, cred_t *, zuserns_t *); int zfs_zaccess_rename(struct znode *, struct znode *, struct znode *, struct znode *, cred_t *cr, zuserns_t *mnt_ns); 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 */