minix/sys/ufs/lfs/ulfs_extattr.h

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