339 lines
13 KiB
C
339 lines
13 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 (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved.
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*/
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/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
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/* All Rights Reserved */
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/*
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* University Copyright- Copyright (c) 1982, 1986, 1988
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* The Regents of the University of California
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* All Rights Reserved
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*
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* University Acknowledgment- Portions of this document are derived from
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* software developed by the University of California, Berkeley, and its
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* contributors.
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*/
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#ifndef _SYS_XVATTR_H
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#define _SYS_XVATTR_H
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#include <sys/vnode.h>
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#include <sys/strings.h>
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#define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */
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/*
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* Structure of all optional attributes.
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*/
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typedef struct xoptattr {
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inode_timespec_t xoa_createtime; /* Create time of file */
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uint8_t xoa_archive;
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uint8_t xoa_system;
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uint8_t xoa_readonly;
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uint8_t xoa_hidden;
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uint8_t xoa_nounlink;
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uint8_t xoa_immutable;
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uint8_t xoa_appendonly;
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uint8_t xoa_nodump;
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uint8_t xoa_opaque;
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uint8_t xoa_av_quarantined;
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uint8_t xoa_av_modified;
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uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ];
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uint8_t xoa_reparse;
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uint64_t xoa_generation;
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uint8_t xoa_offline;
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uint8_t xoa_sparse;
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uint8_t xoa_projinherit;
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uint64_t xoa_projid;
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} xoptattr_t;
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/*
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* The xvattr structure is really a variable length structure that
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* is made up of:
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* - The classic vattr_t (xva_vattr)
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* - a 32 bit quantity (xva_mapsize) that specifies the size of the
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* attribute bitmaps in 32 bit words.
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* - A pointer to the returned attribute bitmap (needed because the
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* previous element, the requested attribute bitmap) is variable length.
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* - The requested attribute bitmap, which is an array of 32 bit words.
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* Callers use the XVA_SET_REQ() macro to set the bits corresponding to
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* the attributes that are being requested.
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* - The returned attribute bitmap, which is an array of 32 bit words.
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* File systems that support optional attributes use the XVA_SET_RTN()
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* macro to set the bits corresponding to the attributes that are being
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* returned.
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* - The xoptattr_t structure which contains the attribute values
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*
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* xva_mapsize determines how many words in the attribute bitmaps.
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* Immediately following the attribute bitmaps is the xoptattr_t.
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* xva_getxoptattr() is used to get the pointer to the xoptattr_t
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* section.
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*/
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#define XVA_MAPSIZE 3 /* Size of attr bitmaps */
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#define XVA_MAGIC 0x78766174 /* Magic # for verification */
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/*
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* The xvattr structure is an extensible structure which permits optional
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* attributes to be requested/returned. File systems may or may not support
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* optional attributes. They do so at their own discretion but if they do
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* support optional attributes, they must register the VFSFT_XVATTR feature
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* so that the optional attributes can be set/retrieved.
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*
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* The fields of the xvattr structure are:
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*
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* xva_vattr - The first element of an xvattr is a legacy vattr structure
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* which includes the common attributes. If AT_XVATTR is set in the va_mask
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* then the entire structure is treated as an xvattr. If AT_XVATTR is not
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* set, then only the xva_vattr structure can be used.
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*
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* xva_magic - 0x78766174 (hex for "xvat"). Magic number for verification.
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*
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* xva_mapsize - Size of requested and returned attribute bitmaps.
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*
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* xva_rtnattrmapp - Pointer to xva_rtnattrmap[]. We need this since the
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* size of the array before it, xva_reqattrmap[], could change which means
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* the location of xva_rtnattrmap[] could change. This will allow unbundled
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* file systems to find the location of xva_rtnattrmap[] when the sizes change.
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*
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* xva_reqattrmap[] - Array of requested attributes. Attributes are
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* represented by a specific bit in a specific element of the attribute
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* map array. Callers set the bits corresponding to the attributes
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* that the caller wants to get/set.
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*
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* xva_rtnattrmap[] - Array of attributes that the file system was able to
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* process. Not all file systems support all optional attributes. This map
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* informs the caller which attributes the underlying file system was able
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* to set/get. (Same structure as the requested attributes array in terms
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* of each attribute corresponding to specific bits and array elements.)
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*
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* xva_xoptattrs - Structure containing values of optional attributes.
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* These values are only valid if the corresponding bits in xva_reqattrmap
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* are set and the underlying file system supports those attributes.
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*/
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typedef struct xvattr {
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vattr_t xva_vattr; /* Embedded vattr structure */
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uint32_t xva_magic; /* Magic Number */
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uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */
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uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */
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uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */
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uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */
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xoptattr_t xva_xoptattrs; /* Optional attributes */
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} xvattr_t;
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/*
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* Attribute bits used in the extensible attribute's (xva's) attribute
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* bitmaps. Note that the bitmaps are made up of a variable length number
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* of 32-bit words. The convention is to use XAT{n}_{attrname} where "n"
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* is the element in the bitmap (starting at 1). This convention is for
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* the convenience of the maintainer to keep track of which element each
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* attribute belongs to.
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*
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* NOTE THAT CONSUMERS MUST *NOT* USE THE XATn_* DEFINES DIRECTLY. CONSUMERS
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* MUST USE THE XAT_* DEFINES.
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*/
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#define XAT0_INDEX 0LL /* Index into bitmap for XAT0 attrs */
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#define XAT0_CREATETIME 0x00000001 /* Create time of file */
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#define XAT0_ARCHIVE 0x00000002 /* Archive */
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#define XAT0_SYSTEM 0x00000004 /* System */
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#define XAT0_READONLY 0x00000008 /* Readonly */
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#define XAT0_HIDDEN 0x00000010 /* Hidden */
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#define XAT0_NOUNLINK 0x00000020 /* Nounlink */
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#define XAT0_IMMUTABLE 0x00000040 /* immutable */
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#define XAT0_APPENDONLY 0x00000080 /* appendonly */
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#define XAT0_NODUMP 0x00000100 /* nodump */
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#define XAT0_OPAQUE 0x00000200 /* opaque */
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#define XAT0_AV_QUARANTINED 0x00000400 /* anti-virus quarantine */
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#define XAT0_AV_MODIFIED 0x00000800 /* anti-virus modified */
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#define XAT0_AV_SCANSTAMP 0x00001000 /* anti-virus scanstamp */
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#define XAT0_REPARSE 0x00002000 /* FS reparse point */
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#define XAT0_GEN 0x00004000 /* object generation number */
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#define XAT0_OFFLINE 0x00008000 /* offline */
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#define XAT0_SPARSE 0x00010000 /* sparse */
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#define XAT0_PROJINHERIT 0x00020000 /* Create with parent projid */
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#define XAT0_PROJID 0x00040000 /* Project ID */
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#define XAT0_ALL_ATTRS (XAT0_CREATETIME|XAT0_ARCHIVE|XAT0_SYSTEM| \
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XAT0_READONLY|XAT0_HIDDEN|XAT0_NOUNLINK|XAT0_IMMUTABLE|XAT0_APPENDONLY| \
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XAT0_NODUMP|XAT0_OPAQUE|XAT0_AV_QUARANTINED| XAT0_AV_MODIFIED| \
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XAT0_AV_SCANSTAMP|XAT0_REPARSE|XATO_GEN|XAT0_OFFLINE|XAT0_SPARSE| \
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XAT0_PROJINHERIT | XAT0_PROJID)
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/* Support for XAT_* optional attributes */
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#define XVA_MASK 0xffffffff /* Used to mask off 32 bits */
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#define XVA_SHFT 32 /* Used to shift index */
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/*
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* Used to pry out the index and attribute bits from the XAT_* attributes
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* defined below. Note that we're masking things down to 32 bits then
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* casting to uint32_t.
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*/
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#define XVA_INDEX(attr) ((uint32_t)(((attr) >> XVA_SHFT) & XVA_MASK))
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#define XVA_ATTRBIT(attr) ((uint32_t)((attr) & XVA_MASK))
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/*
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* The following defines present a "flat namespace" so that consumers don't
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* need to keep track of which element belongs to which bitmap entry.
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*
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* NOTE THAT THESE MUST NEVER BE OR-ed TOGETHER
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*/
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#define XAT_CREATETIME ((XAT0_INDEX << XVA_SHFT) | XAT0_CREATETIME)
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#define XAT_ARCHIVE ((XAT0_INDEX << XVA_SHFT) | XAT0_ARCHIVE)
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#define XAT_SYSTEM ((XAT0_INDEX << XVA_SHFT) | XAT0_SYSTEM)
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#define XAT_READONLY ((XAT0_INDEX << XVA_SHFT) | XAT0_READONLY)
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#define XAT_HIDDEN ((XAT0_INDEX << XVA_SHFT) | XAT0_HIDDEN)
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#define XAT_NOUNLINK ((XAT0_INDEX << XVA_SHFT) | XAT0_NOUNLINK)
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#define XAT_IMMUTABLE ((XAT0_INDEX << XVA_SHFT) | XAT0_IMMUTABLE)
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#define XAT_APPENDONLY ((XAT0_INDEX << XVA_SHFT) | XAT0_APPENDONLY)
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#define XAT_NODUMP ((XAT0_INDEX << XVA_SHFT) | XAT0_NODUMP)
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#define XAT_OPAQUE ((XAT0_INDEX << XVA_SHFT) | XAT0_OPAQUE)
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#define XAT_AV_QUARANTINED ((XAT0_INDEX << XVA_SHFT) | XAT0_AV_QUARANTINED)
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#define XAT_AV_MODIFIED ((XAT0_INDEX << XVA_SHFT) | XAT0_AV_MODIFIED)
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#define XAT_AV_SCANSTAMP ((XAT0_INDEX << XVA_SHFT) | XAT0_AV_SCANSTAMP)
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#define XAT_REPARSE ((XAT0_INDEX << XVA_SHFT) | XAT0_REPARSE)
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#define XAT_GEN ((XAT0_INDEX << XVA_SHFT) | XAT0_GEN)
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#define XAT_OFFLINE ((XAT0_INDEX << XVA_SHFT) | XAT0_OFFLINE)
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#define XAT_SPARSE ((XAT0_INDEX << XVA_SHFT) | XAT0_SPARSE)
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#define XAT_PROJINHERIT ((XAT0_INDEX << XVA_SHFT) | XAT0_PROJINHERIT)
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#define XAT_PROJID ((XAT0_INDEX << XVA_SHFT) | XAT0_PROJID)
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/*
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* The returned attribute map array (xva_rtnattrmap[]) is located past the
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* requested attribute map array (xva_reqattrmap[]). Its location changes
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* when the array sizes change. We use a separate pointer in a known location
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* (xva_rtnattrmapp) to hold the location of xva_rtnattrmap[]. This is
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* set in xva_init()
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*/
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#define XVA_RTNATTRMAP(xvap) ((xvap)->xva_rtnattrmapp)
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/*
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* XVA_SET_REQ() sets an attribute bit in the proper element in the bitmap
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* of requested attributes (xva_reqattrmap[]).
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*/
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#define XVA_SET_REQ(xvap, attr) \
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ASSERT((xvap)->xva_vattr.va_mask & AT_XVATTR); \
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ASSERT((xvap)->xva_magic == XVA_MAGIC); \
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(xvap)->xva_reqattrmap[XVA_INDEX(attr)] |= XVA_ATTRBIT(attr)
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/*
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* XVA_CLR_REQ() clears an attribute bit in the proper element in the bitmap
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* of requested attributes (xva_reqattrmap[]).
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*/
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#define XVA_CLR_REQ(xvap, attr) \
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ASSERT((xvap)->xva_vattr.va_mask & AT_XVATTR); \
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ASSERT((xvap)->xva_magic == XVA_MAGIC); \
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(xvap)->xva_reqattrmap[XVA_INDEX(attr)] &= ~XVA_ATTRBIT(attr)
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/*
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* XVA_SET_RTN() sets an attribute bit in the proper element in the bitmap
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* of returned attributes (xva_rtnattrmap[]).
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*/
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#define XVA_SET_RTN(xvap, attr) \
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ASSERT((xvap)->xva_vattr.va_mask & AT_XVATTR); \
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ASSERT((xvap)->xva_magic == XVA_MAGIC); \
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(XVA_RTNATTRMAP(xvap))[XVA_INDEX(attr)] |= XVA_ATTRBIT(attr)
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/*
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* XVA_ISSET_REQ() checks the requested attribute bitmap (xva_reqattrmap[])
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* to see of the corresponding attribute bit is set. If so, returns non-zero.
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*/
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#define XVA_ISSET_REQ(xvap, attr) \
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((((xvap)->xva_vattr.va_mask & AT_XVATTR) && \
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((xvap)->xva_magic == XVA_MAGIC) && \
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((xvap)->xva_mapsize > XVA_INDEX(attr))) ? \
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((xvap)->xva_reqattrmap[XVA_INDEX(attr)] & XVA_ATTRBIT(attr)) : 0)
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/*
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* XVA_ISSET_RTN() checks the returned attribute bitmap (xva_rtnattrmap[])
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* to see of the corresponding attribute bit is set. If so, returns non-zero.
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*/
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#define XVA_ISSET_RTN(xvap, attr) \
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((((xvap)->xva_vattr.va_mask & AT_XVATTR) && \
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((xvap)->xva_magic == XVA_MAGIC) && \
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((xvap)->xva_mapsize > XVA_INDEX(attr))) ? \
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((XVA_RTNATTRMAP(xvap))[XVA_INDEX(attr)] & XVA_ATTRBIT(attr)) : 0)
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/*
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* Zero out the structure, set the size of the requested/returned bitmaps,
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* set AT_XVATTR in the embedded vattr_t's va_mask, and set up the pointer
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* to the returned attributes array.
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*/
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static inline void
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xva_init(xvattr_t *xvap)
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{
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bzero(xvap, sizeof (xvattr_t));
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xvap->xva_mapsize = XVA_MAPSIZE;
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xvap->xva_magic = XVA_MAGIC;
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xvap->xva_vattr.va_mask = ATTR_XVATTR;
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xvap->xva_rtnattrmapp = &(xvap->xva_rtnattrmap)[0];
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}
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/*
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* If AT_XVATTR is set, returns a pointer to the embedded xoptattr_t
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* structure. Otherwise, returns NULL.
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*/
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static inline xoptattr_t *
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xva_getxoptattr(xvattr_t *xvap)
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{
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xoptattr_t *xoap = NULL;
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if (xvap->xva_vattr.va_mask & AT_XVATTR)
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xoap = &xvap->xva_xoptattrs;
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return (xoap);
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}
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#define MODEMASK 07777 /* mode bits plus permission bits */
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#define PERMMASK 00777 /* permission bits */
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/*
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* VOP_ACCESS flags
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*/
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#define V_ACE_MASK 0x1 /* mask represents NFSv4 ACE permissions */
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#define V_APPEND 0x2 /* want to do append only check */
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/*
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* Structure used on VOP_GETSECATTR and VOP_SETSECATTR operations
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*/
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typedef struct vsecattr {
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uint_t vsa_mask; /* See below */
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int vsa_aclcnt; /* ACL entry count */
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void *vsa_aclentp; /* pointer to ACL entries */
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int vsa_dfaclcnt; /* default ACL entry count */
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void *vsa_dfaclentp; /* pointer to default ACL entries */
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size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */
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uint_t vsa_aclflags; /* ACE ACL flags */
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} vsecattr_t;
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/* vsa_mask values */
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#define VSA_ACL 0x0001
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#define VSA_ACLCNT 0x0002
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#define VSA_DFACL 0x0004
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#define VSA_DFACLCNT 0x0008
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#define VSA_ACE 0x0010
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#define VSA_ACECNT 0x0020
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#define VSA_ACE_ALLTYPES 0x0040
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#define VSA_ACE_ACLFLAGS 0x0080 /* get/set ACE ACL flags */
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#endif /* _SYS_XVATTR_H */
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