9080ff25cf
kernel ACL interfaces and system call names. Break out UFS2 and FFS extattr delete and list vnode operations from setextattr and getextattr to deleteextattr and listextattr, which cleans up the implementations, and makes the results more readable, and makes the APIs more clear. Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
112 lines
4.0 KiB
C
112 lines
4.0 KiB
C
/*-
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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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* $FreeBSD$
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*/
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/*
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* Developed by the TrustedBSD Project.
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* Support for extended filesystem attributes.
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*/
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#ifndef _UFS_UFS_EXTATTR_H_
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#define _UFS_UFS_EXTATTR_H_
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#define UFS_EXTATTR_MAGIC 0x00b5d5ec
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#define UFS_EXTATTR_VERSION 0x00000003
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#define UFS_EXTATTR_FSROOTSUBDIR ".attribute"
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#define UFS_EXTATTR_SUBDIR_SYSTEM "system"
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#define UFS_EXTATTR_SUBDIR_USER "user"
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#define UFS_EXTATTR_MAXEXTATTRNAME 65 /* including null */
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#define UFS_EXTATTR_ATTR_FLAG_INUSE 0x00000001 /* attr has been set */
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#define UFS_EXTATTR_PERM_KERNEL 0x00000000
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#define UFS_EXTATTR_PERM_ROOT 0x00000001
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#define UFS_EXTATTR_PERM_OWNER 0x00000002
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#define UFS_EXTATTR_PERM_ANYONE 0x00000003
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#define UFS_EXTATTR_UEPM_INITIALIZED 0x00000001
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#define UFS_EXTATTR_UEPM_STARTED 0x00000002
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#define UFS_EXTATTR_CMD_START 0x00000001
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#define UFS_EXTATTR_CMD_STOP 0x00000002
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#define UFS_EXTATTR_CMD_ENABLE 0x00000003
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#define UFS_EXTATTR_CMD_DISABLE 0x00000004
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struct ufs_extattr_fileheader {
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u_int uef_magic; /* magic number for sanity checking */
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u_int uef_version; /* version of attribute file */
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u_int uef_size; /* size of attributes, w/o header */
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};
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struct ufs_extattr_header {
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u_int ueh_flags; /* flags for attribute */
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u_int ueh_len; /* local defined length; <= uef_size */
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u_int32_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(ufs_extattr_list_head, ufs_extattr_list_entry);
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struct ufs_extattr_list_entry {
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LIST_ENTRY(ufs_extattr_list_entry) uele_entries;
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struct ufs_extattr_fileheader uele_fileheader;
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int uele_attrnamespace;
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char uele_attrname[UFS_EXTATTR_MAXEXTATTRNAME];
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struct vnode *uele_backing_vnode;
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};
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struct lock;
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struct ucred;
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struct ufs_extattr_per_mount {
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struct lock uepm_lock;
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struct ufs_extattr_list_head uepm_list;
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struct ucred *uepm_ucred;
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int uepm_flags;
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};
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void ufs_extattr_uepm_init(struct ufs_extattr_per_mount *uepm);
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void ufs_extattr_uepm_destroy(struct ufs_extattr_per_mount *uepm);
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int ufs_extattr_start(struct mount *mp, struct thread *td);
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int ufs_extattr_autostart(struct mount *mp, struct thread *td);
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int ufs_extattr_stop(struct mount *mp, struct thread *td);
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int ufs_extattrctl(struct mount *mp, int cmd, struct vnode *filename,
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int attrnamespace, const char *attrname, struct thread *td);
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int ufs_getextattr(struct vop_getextattr_args *ap);
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int ufs_deleteextattr(struct vop_deleteextattr_args *ap);
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int ufs_setextattr(struct vop_setextattr_args *ap);
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void ufs_extattr_vnode_inactive(struct vnode *vp, struct thread *td);
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#endif /* !_KERNEL */
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#endif /* !_UFS_UFS_EXTATTR_H_ */
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