500 lines
18 KiB
C
500 lines
18 KiB
C
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/*
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* Copyright (c) 2000-2020 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
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/*-
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* Copyright (c) 1982, 1986, 1990, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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* @(#)fsctl.h 8.6 (Berkeley) 3/28/94
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*/
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#ifndef _SYS_FSCTL_H_
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#define _SYS_FSCTL_H_
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#include <sys/ioccom.h>
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#include <sys/mount.h>
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#ifdef XNU_KERNEL_PRIVATE
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/* Userland structs for namespace handler */
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typedef struct user64_namespace_handler_info {
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user64_addr_t token;
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user64_addr_t flags;
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user64_addr_t fdptr;
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} user64_namespace_handler_info;
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typedef struct user32_namespace_handler_info {
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user32_addr_t token;
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user32_addr_t flags;
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user32_addr_t fdptr;
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} user32_namespace_handler_info;
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/* Kernel-internal of namespace handler info */
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typedef struct namespace_handler_info {
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user_addr_t token;
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user_addr_t flags;
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user_addr_t fdptr;
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} namespace_handler_info;
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/* Userland structs for extended namespace handler */
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typedef struct user64_namespace_handler_info_ext {
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user64_addr_t token;
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user64_addr_t flags;
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user64_addr_t fdptr;
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user64_addr_t infoptr;
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} user64_namespace_handler_info_ext;
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typedef struct user32_namespace_handler_info_ext {
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user32_addr_t token;
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user32_addr_t flags;
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user32_addr_t fdptr;
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user32_addr_t infoptr;
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} user32_namespace_handler_info_ext;
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/* Kernel-internal of extended namespace handler */
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typedef struct namespace_handler_info_ext {
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user_addr_t token;
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user_addr_t flags;
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user_addr_t fdptr;
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user_addr_t infoptr;
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} namespace_handler_info_ext;
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/* Size-Augmented namespace_handler_info */
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/* 64 bit userland*/
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typedef struct user64_namespace_handler_data {
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user64_addr_t token;
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user64_addr_t flags;
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user64_addr_t fdptr;
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user64_addr_t infoptr;
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user64_addr_t objid;
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user64_addr_t reserved1;
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user64_addr_t reserved2;
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user64_addr_t reserved3;
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} user64_namespace_handler_data;
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/*32 bit userland*/
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typedef struct user32_namespace_handler_data {
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user32_addr_t token;
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user32_addr_t flags;
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user32_addr_t fdptr;
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user32_addr_t infoptr;
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user32_addr_t objid;
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user32_addr_t reserved1;
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user32_addr_t reserved2;
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user32_addr_t reserved3;
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} user32_namespace_handler_data;
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/* kernel-internal */
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typedef struct namespace_handler_data {
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user_addr_t token;
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user_addr_t flags;
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user_addr_t fdptr;
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user_addr_t infoptr;
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user_addr_t objid;
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user_addr_t reserved1;
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user_addr_t reserved2;
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user_addr_t reserved3;
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} namespace_handler_data;
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#else
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typedef struct namespace_handler_info {
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int32_t *token;
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int64_t *flags;
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int32_t *fdptr;
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} namespace_handler_info;
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typedef struct namespace_handler_info_ext {
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int32_t *token;
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int64_t *flags;
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int32_t *fdptr;
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int64_t *infoptr; // for snapshot write events, the kernel puts an offset/length pair here
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} namespace_handler_info_ext;
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typedef struct namespace_handler_data {
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int32_t *token;
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int64_t *flags;
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int32_t *fdptr;
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int64_t *infoptr; // for snapshot write events, the kernel puts an offset/length pair here
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int64_t *objid;
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uint32_t *reserved1;
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uint32_t *reserved2;
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uint32_t *reserved3;
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} namespace_handler_data;
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#endif /* XNU_KERNEL_PRIVATE */
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#ifdef KERNEL_PRIVATE
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#define NSPACE_REARM_NO_ARG ((void *)1)
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int vfs_materialize_file(struct vnode *vp, uint64_t op, int64_t offset, int64_t size);
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int vfs_materialize_dir(struct vnode *vp, uint64_t op, char *file_name, size_t namelen);
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int vfs_materialize_reparent(struct vnode *vp, struct vnode *tdvp);
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#endif // defined(KERNEL_PRIVATE)
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#define NAMESPACE_HANDLER_READ_OP 0x0001
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#define NAMESPACE_HANDLER_WRITE_OP 0x0002
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#define NAMESPACE_HANDLER_DELETE_OP 0x0004
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#define NAMESPACE_HANDLER_TRUNCATE_OP 0x0008
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#define NAMESPACE_HANDLER_RENAME_OP 0x0010
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#define NAMESPACE_HANDLER_METADATA_WRITE_OP 0x0020
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#define NAMESPACE_HANDLER_METADATA_DELETE_OP 0x0040
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#define NAMESPACE_HANDLER_METADATA_MOD 0x0080
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// #define NAMESPACE_HANDLER_OP_DO_NOT_USE 0x0100 // SNAPSHOT_EVENT uses this value
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#define NAMESPACE_HANDLER_LINK_CREATE 0x0200
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#define NAMESPACE_HANDLER_RENAME_SUCCESS_OP 0x0400
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#define NAMESPACE_HANDLER_RENAME_FAILED_OP 0x0800
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#define NAMESPACE_HANDLER_NSPACE_EVENT 0x1000
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#define NAMESPACE_HANDLER_SNAPSHOT_EVENT 0x0100
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#define NAMESPACE_HANDLER_TRACK_EVENT 0x2000
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#define NAMESPACE_HANDLER_LOOKUP_OP 0x4000
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#define NAMESPACE_HANDLER_EVENT_TYPE_MASK (NAMESPACE_HANDLER_NSPACE_EVENT | NAMESPACE_HANDLER_SNAPSHOT_EVENT | NAMESPACE_HANDLER_TRACK_EVENT)
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typedef int32_t nspace_handler_info[2];
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typedef char fstypename_t[MFSTYPENAMELEN];
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#ifdef KERNEL
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typedef struct user64_package_ext_info {
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user64_addr_t strings;
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uint32_t num_entries;
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uint32_t max_width;
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} user64_package_ext_info;
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typedef struct user32_package_ext_info {
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user32_addr_t strings;
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uint32_t num_entries;
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uint32_t max_width;
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} user32_package_ext_info;
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#endif // KERNEL
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typedef struct package_ext_info {
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const char *strings;
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uint32_t num_entries;
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uint32_t max_width;
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} package_ext_info;
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/* Disk conditioner configuration */
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typedef struct disk_conditioner_info {
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int enabled;
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uint64_t access_time_usec; // maximum latency until transfer begins
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uint64_t read_throughput_mbps; // maximum throughput for reads
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uint64_t write_throughput_mbps; // maximum throughput for writes
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int is_ssd; // behave like an SSD
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/* revision 2 */
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uint32_t ioqueue_depth;
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uint32_t maxreadcnt;
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uint32_t maxwritecnt;
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uint32_t segreadcnt;
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uint32_t segwritecnt;
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} disk_conditioner_info;
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/*
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* BSD flags manipulation arguments.
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*
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* This provides a safe way to update the BSD flags field of an inode,
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* which has some user components as well as some system components.
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* What it provides is a compare-and-swap operation, whereby the caller
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* fetches what the expected flags are, computes the new set, and then
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* provides the old along with the new. If the old that's provided matches
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* what's actually in the inode, the new value is set. The actual inode
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* value is returned to the caller, and expected == actual is how the
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* caller can determine that the operation succeeded.
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*
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* Some BSD flags (e.g. UF_COMPRESSED) can only be manipulated via this
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* safe mechanism.
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*/
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struct fsioc_cas_bsdflags {
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uint32_t expected_flags; /* [IN] expected flags */
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uint32_t new_flags; /* [IN] new value to set */
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uint32_t actual_flags; /* [OUT] the actual flags in inode */
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};
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#define FSIOC_GRAFT_VERSION 2
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/* Grafting flags */
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#define FSCTL_GRAFT_PRESERVE_MOUNT 0x0001 /* Preserve underlying mount until shutdown */
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#define FSCTL_GRAFT_ALTERNATE_SHARED_REGION 0x0002 /* Binaries within should use alternate shared region */
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#define FSCTL_GRAFT_SYSTEM_CONTENT 0x0004 /* Cryptex contains system content */
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#define FSCTL_GRAFT_PANIC_ON_AUTHFAIL 0x0008 /* On failure to authenticate, panic */
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#define FSCTL_GRAFT_STRICT_AUTH 0x0010 /* Strict authentication mode */
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#define FSCTL_GRAFT_PRESERVE_GRAFT 0x0020 /* Preserve graft itself until unmount */
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/* Ungrafting flags */
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#define FSCTL_UNGRAFT_UNGRAFTALL 0x0001 /* Ungraft all currently grafted filesystems */
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#ifdef KERNEL
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typedef struct fsioc_graft_fs {
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uint32_t graft_version;
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uint32_t graft_type;
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uint32_t graft_4cc;
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uint64_t graft_flags;
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uint64_t dir_ino;
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void *authentic_manifest;
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size_t authentic_manifest_size;
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void *user_manifest;
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size_t user_manifest_size;
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void *payload;
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size_t payload_size;
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} fsioc_graft_fs_t;
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typedef struct fsioc_ungraft_fs {
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uint64_t ungraft_flags;
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} fsioc_ungraft_fs_t;
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typedef struct fsioc_auth_fs {
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vnode_t authvp;
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} fsioc_auth_fs_t;
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#endif /* KERNEL */
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/* exclave fs filesystem tags */
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typedef enum {
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EFT_EXCLAVE,
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EFT_SYSTEM,
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EFT_FS_NUM_TAGS,
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} exclave_fs_tag_t;
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typedef struct fsioc_exclave_fs_register {
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uint32_t fs_tag;
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} fsioc_exclave_fs_register_t;
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#define FSCTL_SYNC_FULLSYNC (1<<0) /* Flush the data fully to disk, if supported by the filesystem */
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#define FSCTL_SYNC_WAIT (1<<1) /* Wait for the sync to complete */
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#define FSIOC_SYNC_VOLUME _IOW('A', 1, uint32_t)
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#define FSCTL_SYNC_VOLUME IOCBASECMD(FSIOC_SYNC_VOLUME)
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#define FSIOC_SET_PACKAGE_EXTS _IOW('A', 2, struct package_ext_info)
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#define FSCTL_SET_PACKAGE_EXTS IOCBASECMD(FSIOC_SET_PACKAGE_EXTS)
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/* Unsupported - previously FSIOC_WAIT_FOR_SYNC */
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#define FSIOC_UNSUPPORTED _IOR('A', 3, int32_t)
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/* 4 - 9 was used for NAMESPACE handler operation to support dataless file faults
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* no and no longer user */
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#define FSIOC_SET_FSTYPENAME_OVERRIDE _IOW('A', 10, fstypename_t)
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|
#define FSCTL_SET_FSTYPENAME_OVERRIDE IOCBASECMD(FSIOC_SET_FSTYPENAME_OVERRIDE)
|
||
|
|
|
||
|
|
/* 12 was used for TRACKED_HANDLER_GET which has now been removed
|
||
|
|
* as it is no longer used. */
|
||
|
|
|
||
|
|
/* 13 was used for FSIOC_SNAPSHOT_HANDLER_GET_EXT and now been removed */
|
||
|
|
|
||
|
|
/* 14 was used for NAMESPACE_HANDLER_GETDATA which has now been
|
||
|
|
* removed as it is no longer used. */
|
||
|
|
|
||
|
|
#define FSIOC_ROUTEFS_SETROUTEID _IO('A', 15)
|
||
|
|
#define FSCTL_ROUTEFS_SETROUTEID IOCBASECMD(FSIOC_ROUTEFS_SETROUTEID)
|
||
|
|
|
||
|
|
/* ioctls to support SEEK_HOLE SEEK_DATA */
|
||
|
|
#define FSIOC_FIOSEEKHOLE _IOWR('A', 16, off_t)
|
||
|
|
#define FSCTL_FIOSEEKHOLE IOCBASECMD(FSIOC_FIOSEEKHOLE)
|
||
|
|
#define FSIOC_FIOSEEKDATA _IOWR('A', 17, off_t)
|
||
|
|
#define FSCTL_FIOSEEKDATA IOCBASECMD(FSIOC_FIOSEEKDATA)
|
||
|
|
|
||
|
|
/* Disk conditioner */
|
||
|
|
#define DISK_CONDITIONER_IOC_GET _IOR('A', 18, disk_conditioner_info)
|
||
|
|
#define DISK_CONDITIONER_FSCTL_GET IOCBASECMD(DISK_CONDITIONER_IOC_GET)
|
||
|
|
#define DISK_CONDITIONER_IOC_SET _IOW('A', 19, disk_conditioner_info)
|
||
|
|
#define DISK_CONDITIONER_FSCTL_SET IOCBASECMD(DISK_CONDITIONER_IOC_SET)
|
||
|
|
|
||
|
|
/* Set the value of a file's BSD flags in a safe way. */
|
||
|
|
#define FSIOC_CAS_BSDFLAGS _IOWR('A', 20, struct fsioc_cas_bsdflags)
|
||
|
|
|
||
|
|
/* Check if a file is only open once (pass zero for the extra arg) */
|
||
|
|
#define FSIOC_FD_ONLY_OPEN_ONCE _IOWR('A', 21, uint32_t)
|
||
|
|
|
||
|
|
#ifdef KERNEL
|
||
|
|
|
||
|
|
/* Graft a filesystem onto a directory in its parent filesystem */
|
||
|
|
#define FSIOC_GRAFT_FS _IOW('A', 22, fsioc_graft_fs_t)
|
||
|
|
|
||
|
|
/* Ungraft filesystem(s) */
|
||
|
|
#define FSIOC_UNGRAFT_FS _IOW('A', 23, fsioc_ungraft_fs_t)
|
||
|
|
|
||
|
|
/* Check if a file is on an authenticated volume/Cryptex */
|
||
|
|
#define FSIOC_AUTH_FS _IOW('A', 24, fsioc_auth_fs_t)
|
||
|
|
|
||
|
|
#endif /* KERNEL */
|
||
|
|
|
||
|
|
/* Register an exclave fs base directory */
|
||
|
|
#define FSIOC_EXCLAVE_FS_REGISTER _IOW('A', 25, fsioc_exclave_fs_register_t)
|
||
|
|
|
||
|
|
/* Unregister an exclave fs base directory (pass zero for the extra arg) */
|
||
|
|
#define FSIOC_EXCLAVE_FS_UNREGISTER _IOW('A', 26, uint32_t)
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
uint32_t fs_tag; // exclave fs tag associated with base directory
|
||
|
|
fsid_t fsid; // fsid of volume which contains base directory
|
||
|
|
uint64_t base_dir; // inode number of base directory
|
||
|
|
uint64_t graft_file; // inode number of graft file (0 if not a graft)
|
||
|
|
} exclave_fs_base_dir_t;
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
uint32_t count; // input: number of records that can be written to output buffer
|
||
|
|
// output: if output buffer is null, number of registered base dirs
|
||
|
|
// if non-null, number of entries written to base_dirs buffer
|
||
|
|
exclave_fs_base_dir_t *base_dirs; // output buffer (base directory entries)
|
||
|
|
} exclave_fs_get_base_dirs_t;
|
||
|
|
|
||
|
|
#define EXCLAVE_FS_GET_BASE_DIRS_MAX_COUNT (10 * 1024)
|
||
|
|
|
||
|
|
#define FSIOC_EXCLAVE_FS_GET_BASE_DIRS _IOWR('A', 27, exclave_fs_get_base_dirs_t)
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
uint64_t gi_graft_file; // inode number of graft file
|
||
|
|
uint64_t gi_graft_dir; // inode number of graft directory
|
||
|
|
uint64_t gi_inum_base; // base of inode range allocated to graft
|
||
|
|
uint64_t gi_inum_len:56; // length of inode range allocated to graft
|
||
|
|
uint64_t gi_graft_lut_reduction:8; // reduction in lut size when switching to metadata based (in percents)
|
||
|
|
uint64_t gi_graft_flags; // FSCTL_GRAFT_* flags from bsd/sys/fsctl.h
|
||
|
|
} fsioc_graft_info_t;
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
uint16_t ggi_count; // input: number of records that can be written to output buffer
|
||
|
|
// output: if output buffer is null, number of grafts in volume
|
||
|
|
// if non-null, number of records written to buffer
|
||
|
|
uint16_t ggi_graft_index; // output: if inode is in a graft and buffer is not null,
|
||
|
|
// the index of the graft which contains this inode, 0 otherwise
|
||
|
|
uint8_t ggi_is_in_graft; // output: 1 if inode in a graft, 0 otherwise
|
||
|
|
uint8_t ggi_padding[3]; // padding, should be zero
|
||
|
|
#ifdef KERNEL
|
||
|
|
user64_addr_t ggi_buffer; // graft info records buffer
|
||
|
|
#else
|
||
|
|
void *ggi_buffer;
|
||
|
|
#if __SIZEOF_POINTER__ == 4
|
||
|
|
uint32_t padding;
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
} fsioc_get_graft_info_t;
|
||
|
|
|
||
|
|
/* This used to be defined in APFS, we keep the group as 'J' for backward compatability */
|
||
|
|
#define FSIOC_GET_GRAFT_INFO _IOWR('J', 102, fsioc_get_graft_info_t)
|
||
|
|
|
||
|
|
//
|
||
|
|
// Spotlight and fseventsd use these fsctl()'s to find out
|
||
|
|
// the mount time of a volume and the last time it was
|
||
|
|
// unmounted. Both HFS and APFS support these calls.
|
||
|
|
//
|
||
|
|
// NOTE: the values for these defines should _not_ be changed
|
||
|
|
// or else it will break binary compatibility with mds
|
||
|
|
// and fseventsd.
|
||
|
|
//
|
||
|
|
#define SPOTLIGHT_IOC_GET_MOUNT_TIME _IOR('h', 18, u_int32_t)
|
||
|
|
#define SPOTLIGHT_FSCTL_GET_MOUNT_TIME IOCBASECMD(SPOTLIGHT_IOC_GET_MOUNT_TIME)
|
||
|
|
#define SPOTLIGHT_IOC_GET_LAST_MTIME _IOR('h', 19, u_int32_t)
|
||
|
|
#define SPOTLIGHT_FSCTL_GET_LAST_MTIME IOCBASECMD(SPOTLIGHT_IOC_GET_LAST_MTIME)
|
||
|
|
|
||
|
|
/* Mark file's extents as "frozen" because someone has references to physical address */
|
||
|
|
#define FSIOC_FREEZE_EXTENTS _IO('h', 20)
|
||
|
|
#define FSCTL_FREEZE_EXTENTS IOCBASECMD(FSIOC_FREEZE_EXTENTS)
|
||
|
|
|
||
|
|
/* Clear the "frozen" status of file's extents */
|
||
|
|
#define FSIOC_THAW_EXTENTS _IO('h', 21)
|
||
|
|
#define FSCTL_THAW_EXTENTS IOCBASECMD(FSIOC_THAW_EXTENTS)
|
||
|
|
|
||
|
|
/* Selectors on 'h' from 22 -> 49 are defined in HFS repo */
|
||
|
|
|
||
|
|
#define FSIOC_EVAL_ROOTAUTH _IO('h', 50)
|
||
|
|
#define FSCTL_EVAL_ROOTAUTH IOCBASECMD(FSIOC_EVAL_ROOTAUTH)
|
||
|
|
|
||
|
|
/* This op should only be invoked from within the kernel */
|
||
|
|
#define FSIOC_KERNEL_ROOTAUTH _IOW('h', 51, uint32_t)
|
||
|
|
|
||
|
|
#define FIRMLINK_STRUCT_LEN 1032
|
||
|
|
typedef struct generic_firmlink {
|
||
|
|
uint8_t array[FIRMLINK_STRUCT_LEN];
|
||
|
|
} generic_firmlink_t;
|
||
|
|
|
||
|
|
#define FSIOC_FIRMLINK_CTL _IOWR ('J', 60, generic_firmlink_t)
|
||
|
|
|
||
|
|
/* For testing /dev/fsevents FSE_ACCESS_GRANTED. */
|
||
|
|
#define FSIOC_TEST_FSE_ACCESS_GRANTED _IO('h', 52)
|
||
|
|
|
||
|
|
#ifndef KERNEL
|
||
|
|
|
||
|
|
#include <sys/cdefs.h>
|
||
|
|
|
||
|
|
__BEGIN_DECLS
|
||
|
|
|
||
|
|
int fsctl(const char *, unsigned long, void*, unsigned int);
|
||
|
|
int ffsctl(int, unsigned long, void*, unsigned int);
|
||
|
|
|
||
|
|
__END_DECLS
|
||
|
|
#endif /* !KERNEL */
|
||
|
|
#endif /* !_SYS_FSCTL_H_ */
|