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// SPDX-License-Identifier: CDDL-1.0
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or https://opensource.org/licenses/CDDL-1.0.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2014 Xin Li <delphij@FreeBSD.org>. All rights reserved.
* Copyright 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_ZFS_IOCTL_COMPAT_H
#define _SYS_ZFS_IOCTL_COMPAT_H
#include <sys/cred.h>
#include <sys/dmu.h>
#include <sys/zio.h>
#include <sys/dsl_deleg.h>
#include <sys/zfs_ioctl.h>
#ifdef _KERNEL
#include <sys/nvpair.h>
#endif /* _KERNEL */
/*
* Legacy ioctl support allows compatibility with pre-OpenZFS tools on
* FreeBSD. The need for it will eventually pass (perhaps after FreeBSD
* 12 is well out of support), at which point this code can be removed.
* For now, downstream consumers may choose to disable this code by
* removing the following define.
*/
#define ZFS_LEGACY_SUPPORT
#ifdef __cplusplus
extern "C" {
#endif
/*
* Backwards ioctl compatibility
*/
/* ioctl versions for vfs.zfs.version.ioctl */
#define ZFS_IOCVER_UNDEF -1
#define ZFS_IOCVER_NONE 0
#define ZFS_IOCVER_DEADMAN 1
#define ZFS_IOCVER_LZC 2
#define ZFS_IOCVER_ZCMD 3
#define ZFS_IOCVER_EDBP 4
#define ZFS_IOCVER_RESUME 5
#define ZFS_IOCVER_INLANES 6
#define ZFS_IOCVER_PAD 7
#define ZFS_IOCVER_LEGACY ZFS_IOCVER_PAD
#define ZFS_IOCVER_OZFS 15
/* compatibility conversion flag */
#define ZFS_CMD_COMPAT_NONE 0
#define ZFS_CMD_COMPAT_V15 1
#define ZFS_CMD_COMPAT_V28 2
#define ZFS_CMD_COMPAT_DEADMAN 3
#define ZFS_CMD_COMPAT_LZC 4
#define ZFS_CMD_COMPAT_ZCMD 5
#define ZFS_CMD_COMPAT_EDBP 6
#define ZFS_CMD_COMPAT_RESUME 7
#define ZFS_CMD_COMPAT_INLANES 8
#define ZFS_CMD_COMPAT_LEGACY 9
#define ZFS_IOC_COMPAT_PASS 254
#define ZFS_IOC_COMPAT_FAIL 255
#define ZFS_IOCREQ(ioreq) ((ioreq) & 0xff)
typedef struct zfs_iocparm {
uint32_t zfs_ioctl_version;
uint64_t zfs_cmd;
uint64_t zfs_cmd_size;
} zfs_iocparm_t;
#ifdef ZFS_LEGACY_SUPPORT
#define LEGACY_MAXPATHLEN 1024
#define LEGACY_MAXNAMELEN 256
/*
* Note: this struct must have the same layout in 32-bit and 64-bit, so
* that 32-bit processes (like /sbin/zfs) can pass it to the 64-bit
* kernel. Therefore, we add padding to it so that no "hidden" padding
* is automatically added on 64-bit (but not on 32-bit).
*/
typedef struct zfs_cmd_legacy {
char zc_name[LEGACY_MAXPATHLEN]; /* pool|dataset name */
uint64_t zc_nvlist_src; /* really (char *) */
uint64_t zc_nvlist_src_size;
uint64_t zc_nvlist_dst; /* really (char *) */
uint64_t zc_nvlist_dst_size;
boolean_t zc_nvlist_dst_filled; /* put an nvlist in dst? */
int zc_pad2;
/*
* The following members are for legacy ioctls which haven't been
* converted to the new method.
*/
uint64_t zc_history; /* really (char *) */
char zc_value[LEGACY_MAXPATHLEN * 2];
char zc_string[LEGACY_MAXNAMELEN];
uint64_t zc_guid;
uint64_t zc_nvlist_conf; /* really (char *) */
uint64_t zc_nvlist_conf_size;
uint64_t zc_cookie;
uint64_t zc_objset_type;
uint64_t zc_perm_action;
uint64_t zc_history_len;
uint64_t zc_history_offset;
uint64_t zc_obj;
uint64_t zc_iflags; /* internal to zfs(7fs) */
zfs_share_t zc_share;
uint64_t zc_jailid;
dmu_objset_stats_t zc_objset_stats;
dmu_replay_record_t zc_begin_record;
zinject_record_t zc_inject_record;
uint32_t zc_defer_destroy;
uint32_t zc_flags;
uint64_t zc_action_handle;
int zc_cleanup_fd;
uint8_t zc_simple;
uint8_t zc_pad3[3];
boolean_t zc_resumable;
uint32_t zc_pad4;
uint64_t zc_sendobj;
uint64_t zc_fromobj;
uint64_t zc_createtxg;
zfs_stat_t zc_stat;
} zfs_cmd_legacy_t;
#endif
#ifdef _KERNEL
int zfs_ioctl_compat_pre(zfs_cmd_t *, int *, const int);
void zfs_ioctl_compat_post(zfs_cmd_t *, const int, const int);
nvlist_t *zfs_ioctl_compat_innvl(zfs_cmd_t *, nvlist_t *, const int,
const int);
nvlist_t *zfs_ioctl_compat_outnvl(zfs_cmd_t *, nvlist_t *, const int,
const int);
#endif /* _KERNEL */
#ifdef ZFS_LEGACY_SUPPORT
int zfs_ioctl_legacy_to_ozfs(int request);
int zfs_ioctl_ozfs_to_legacy(int request);
void zfs_cmd_legacy_to_ozfs(zfs_cmd_legacy_t *src, zfs_cmd_t *dst);
void zfs_cmd_ozfs_to_legacy(zfs_cmd_t *src, zfs_cmd_legacy_t *dst);
#endif
void zfs_cmd_compat_put(zfs_cmd_t *, caddr_t, const int, const int);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_ZFS_IOCTL_COMPAT_H */
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