130 lines
4.7 KiB
C
130 lines
4.7 KiB
C
/* $NetBSD: ulfs_extattr.h,v 1.2 2013/06/06 00:48:04 dholland Exp $ */
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/* from NetBSD: extattr.h,v 1.10 2011/10/09 21:15:34 chs Exp */
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/*-
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* Copyright (c) 1999-2001 Robert N. M. Watson
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* All rights reserved.
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*
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* This software was developed by Robert Watson for the TrustedBSD Project.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD: src/sys/ufs/ufs/extattr.h,v 1.20 2005/01/31 08:16:45 imp Exp $
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*/
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/*
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* Support for file system extended attributes on the ULFS1 file system.
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* Developed by the TrustedBSD Project.
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*/
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#ifndef _UFS_LFS_ULFS_EXTATTR_H_
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#define _UFS_LFS_ULFS_EXTATTR_H_
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#define ULFS_EXTATTR_MAGIC 0x00b5d5ec
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#define ULFS_EXTATTR_VERSION 0x00000003
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#define ULFS_EXTATTR_FSROOTSUBDIR ".attribute"
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#define ULFS_EXTATTR_SUBDIR_SYSTEM "system"
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#define ULFS_EXTATTR_SUBDIR_USER "user"
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#define ULFS_EXTATTR_MAXEXTATTRNAME 65 /* including null */
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#define ULFS_EXTATTR_ATTR_FLAG_INUSE 0x00000001 /* attr has been set */
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#define ULFS_EXTATTR_PERM_KERNEL 0x00000000
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#define ULFS_EXTATTR_PERM_ROOT 0x00000001
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#define ULFS_EXTATTR_PERM_OWNER 0x00000002
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#define ULFS_EXTATTR_PERM_ANYONE 0x00000003
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#define ULFS_EXTATTR_UEPM_INITIALIZED 0x00000001
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#define ULFS_EXTATTR_UEPM_STARTED 0x00000002
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#define ULFS_EXTATTR_CMD_START EXTATTR_CMD_START
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#define ULFS_EXTATTR_CMD_STOP EXTATTR_CMD_STOP
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#define ULFS_EXTATTR_CMD_ENABLE 0x00000003
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#define ULFS_EXTATTR_CMD_DISABLE 0x00000004
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struct ulfs_extattr_fileheader {
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uint32_t uef_magic; /* magic number for sanity checking */
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uint32_t uef_version; /* version of attribute file */
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uint32_t uef_size; /* size of attributes, w/o header */
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};
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struct ulfs_extattr_header {
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uint32_t ueh_flags; /* flags for attribute */
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uint32_t ueh_len; /* local defined length; <= uef_size */
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uint32_t ueh_i_gen; /* generation number for sanity */
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/* data follows the header */
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};
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#ifdef _KERNEL
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#ifdef MALLOC_DECLARE
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MALLOC_DECLARE(M_EXTATTR);
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#endif
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struct vnode;
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LIST_HEAD(ulfs_extattr_list_head, ulfs_extattr_list_entry);
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struct ulfs_extattr_list_entry {
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LIST_ENTRY(ulfs_extattr_list_entry) uele_entries;
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struct ulfs_extattr_fileheader uele_fileheader;
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int uele_attrnamespace;
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char uele_attrname[ULFS_EXTATTR_MAXEXTATTRNAME];
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struct vnode *uele_backing_vnode;
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int uele_flags;
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};
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/* uele_flags */
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#define UELE_F_NEEDSWAP 0x01 /* needs byte swap */
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#define UELE_NEEDSWAP(uele) ((uele)->uele_flags & UELE_F_NEEDSWAP)
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struct lock;
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struct ulfs_extattr_per_mount {
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kmutex_t uepm_lock;
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struct ulfs_extattr_list_head uepm_list;
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kauth_cred_t uepm_ucred;
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int uepm_lockcnt;
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int uepm_flags;
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};
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void ulfs_extattr_uepm_init(struct ulfs_extattr_per_mount *uepm);
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void ulfs_extattr_uepm_destroy(struct ulfs_extattr_per_mount *uepm);
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int ulfs_extattr_start(struct mount *mp, struct lwp *l);
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int ulfs_extattr_autostart(struct mount *mp, struct lwp *l);
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void ulfs_extattr_stop(struct mount *mp, struct lwp *l);
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int ulfs_extattrctl(struct mount *mp, int cmd, struct vnode *filename,
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int attrnamespace, const char *attrname);
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struct vop_getextattr_args;
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int ulfs_getextattr(struct vop_getextattr_args *ap);
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struct vop_deleteextattr_args;
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int ulfs_deleteextattr(struct vop_deleteextattr_args *ap);
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struct vop_setextattr_args;
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int ulfs_setextattr(struct vop_setextattr_args *ap);
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struct vop_listextattr_args;
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int ulfs_listextattr(struct vop_listextattr_args *ap);
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void ulfs_extattr_vnode_inactive(struct vnode *vp, struct lwp *l);
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void ulfs_extattr_init(void);
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void ulfs_extattr_done(void);
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#endif /* !_KERNEL */
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#endif /* !_UFS_LFS_ULFS_EXTATTR_H_ */
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