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433 lines
10 KiB
C
433 lines
10 KiB
C
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2013 Xin Li <delphij@FreeBSD.org>. All rights reserved.
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* Copyright 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
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* Portions Copyright 2005, 2010, Oracle and/or its affiliates.
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* All rights reserved.
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* Use is subject to license terms.
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/cred.h>
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#include <sys/dmu.h>
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#include <sys/zio.h>
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#include <sys/nvpair.h>
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#include <sys/dsl_deleg.h>
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#include <sys/zfs_ioctl.h>
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#include "zfs_namecheck.h"
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#include <os/freebsd/zfs/sys/zfs_ioctl_compat.h>
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/*
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* FreeBSD zfs_cmd compatibility with older binaries
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* appropriately remap/extend the zfs_cmd_t structure
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*/
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void
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zfs_cmd_compat_get(zfs_cmd_t *zc, caddr_t addr, const int cflag)
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{
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}
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#if 0
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static int
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zfs_ioctl_compat_get_nvlist(uint64_t nvl, size_t size, int iflag,
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nvlist_t **nvp)
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{
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char *packed;
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int error;
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nvlist_t *list = NULL;
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/*
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* Read in and unpack the user-supplied nvlist.
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*/
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if (size == 0)
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return (EINVAL);
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#ifdef _KERNEL
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packed = kmem_alloc(size, KM_SLEEP);
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if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size,
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iflag)) != 0) {
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kmem_free(packed, size);
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return (error);
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}
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#else
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packed = (void *)(uintptr_t)nvl;
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#endif
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error = nvlist_unpack(packed, size, &list, 0);
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#ifdef _KERNEL
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kmem_free(packed, size);
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#endif
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if (error != 0)
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return (error);
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*nvp = list;
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return (0);
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}
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static int
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zfs_ioctl_compat_put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl)
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{
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char *packed = NULL;
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int error = 0;
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size_t size;
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VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0);
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#ifdef _KERNEL
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packed = kmem_alloc(size, KM_SLEEP);
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VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE,
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KM_SLEEP) == 0);
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if (ddi_copyout(packed,
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(void *)(uintptr_t)zc->zc_nvlist_dst, size, zc->zc_iflags) != 0)
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error = EFAULT;
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kmem_free(packed, size);
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#else
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packed = (void *)(uintptr_t)zc->zc_nvlist_dst;
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VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE,
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0) == 0);
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#endif
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zc->zc_nvlist_dst_size = size;
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return (error);
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}
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static void
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zfs_ioctl_compat_fix_stats_nvlist(nvlist_t *nvl)
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{
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nvlist_t **child;
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nvlist_t *nvroot = NULL;
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vdev_stat_t *vs;
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uint_t c, children, nelem;
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if (nvlist_lookup_nvlist_array(nvl, ZPOOL_CONFIG_CHILDREN,
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&child, &children) == 0) {
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for (c = 0; c < children; c++) {
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zfs_ioctl_compat_fix_stats_nvlist(child[c]);
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}
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}
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if (nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_VDEV_TREE,
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&nvroot) == 0)
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zfs_ioctl_compat_fix_stats_nvlist(nvroot);
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if ((nvlist_lookup_uint64_array(nvl, "stats",
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(uint64_t **)&vs, &nelem) == 0)) {
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nvlist_add_uint64_array(nvl,
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ZPOOL_CONFIG_VDEV_STATS,
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(uint64_t *)vs, nelem);
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nvlist_remove(nvl, "stats",
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DATA_TYPE_UINT64_ARRAY);
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}
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}
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static int
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zfs_ioctl_compat_fix_stats(zfs_cmd_t *zc, const int nc)
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{
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nvlist_t *nv, *nvp = NULL;
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nvpair_t *elem;
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int error;
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if ((error = zfs_ioctl_compat_get_nvlist(zc->zc_nvlist_dst,
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zc->zc_nvlist_dst_size, zc->zc_iflags, &nv)) != 0)
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return (error);
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if (nc == 5) { /* ZFS_IOC_POOL_STATS */
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elem = NULL;
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while ((elem = nvlist_next_nvpair(nv, elem)) != NULL) {
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if (nvpair_value_nvlist(elem, &nvp) == 0)
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zfs_ioctl_compat_fix_stats_nvlist(nvp);
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}
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elem = NULL;
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} else
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zfs_ioctl_compat_fix_stats_nvlist(nv);
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error = zfs_ioctl_compat_put_nvlist(zc, nv);
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nvlist_free(nv);
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return (error);
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}
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static int
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zfs_ioctl_compat_pool_get_props(zfs_cmd_t *zc)
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{
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nvlist_t *nv, *nva = NULL;
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int error;
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if ((error = zfs_ioctl_compat_get_nvlist(zc->zc_nvlist_dst,
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zc->zc_nvlist_dst_size, zc->zc_iflags, &nv)) != 0)
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return (error);
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if (nvlist_lookup_nvlist(nv, "used", &nva) == 0) {
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nvlist_add_nvlist(nv, "allocated", nva);
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nvlist_remove(nv, "used", DATA_TYPE_NVLIST);
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}
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if (nvlist_lookup_nvlist(nv, "available", &nva) == 0) {
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nvlist_add_nvlist(nv, "free", nva);
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nvlist_remove(nv, "available", DATA_TYPE_NVLIST);
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}
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error = zfs_ioctl_compat_put_nvlist(zc, nv);
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nvlist_free(nv);
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return (error);
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}
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#endif
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#ifdef _KERNEL
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int
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zfs_ioctl_compat_pre(zfs_cmd_t *zc, int *vec, const int cflag)
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{
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int error = 0;
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/* are we creating a clone? */
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if (*vec == ZFS_IOC_CREATE && zc->zc_value[0] != '\0')
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*vec = ZFS_IOC_CLONE;
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if (cflag == ZFS_CMD_COMPAT_V15) {
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switch (*vec) {
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case 7: /* ZFS_IOC_POOL_SCRUB (v15) */
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zc->zc_cookie = POOL_SCAN_SCRUB;
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break;
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}
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}
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return (error);
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}
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void
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zfs_ioctl_compat_post(zfs_cmd_t *zc, int vec, const int cflag)
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{
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if (cflag == ZFS_CMD_COMPAT_V15) {
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switch (vec) {
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case ZFS_IOC_POOL_CONFIGS:
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case ZFS_IOC_POOL_STATS:
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case ZFS_IOC_POOL_TRYIMPORT:
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zfs_ioctl_compat_fix_stats(zc, vec);
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break;
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case 41: /* ZFS_IOC_POOL_GET_PROPS (v15) */
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zfs_ioctl_compat_pool_get_props(zc);
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break;
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}
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}
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}
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nvlist_t *
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zfs_ioctl_compat_innvl(zfs_cmd_t *zc, nvlist_t *innvl, const int vec,
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const int cflag)
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{
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nvlist_t *nvl, *tmpnvl, *hnvl;
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nvpair_t *elem;
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char *poolname, *snapname;
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int err;
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if (cflag == ZFS_CMD_COMPAT_NONE || cflag == ZFS_CMD_COMPAT_LZC ||
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cflag == ZFS_CMD_COMPAT_ZCMD || cflag == ZFS_CMD_COMPAT_EDBP ||
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cflag == ZFS_CMD_COMPAT_RESUME || cflag == ZFS_CMD_COMPAT_INLANES)
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goto out;
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switch (vec) {
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case ZFS_IOC_CREATE:
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nvl = fnvlist_alloc();
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fnvlist_add_int32(nvl, "type", zc->zc_objset_type);
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if (innvl != NULL) {
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fnvlist_add_nvlist(nvl, "props", innvl);
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nvlist_free(innvl);
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}
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return (nvl);
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break;
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case ZFS_IOC_CLONE:
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nvl = fnvlist_alloc();
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fnvlist_add_string(nvl, "origin", zc->zc_value);
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if (innvl != NULL) {
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fnvlist_add_nvlist(nvl, "props", innvl);
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nvlist_free(innvl);
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}
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return (nvl);
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break;
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case ZFS_IOC_SNAPSHOT:
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if (innvl == NULL)
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goto out;
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nvl = fnvlist_alloc();
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fnvlist_add_nvlist(nvl, "props", innvl);
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tmpnvl = fnvlist_alloc();
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snapname = kmem_asprintf("%s@%s", zc->zc_name, zc->zc_value);
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fnvlist_add_boolean(tmpnvl, snapname);
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kmem_free(snapname, strlen(snapname + 1));
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/* check if we are doing a recursive snapshot */
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if (zc->zc_cookie)
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dmu_get_recursive_snaps_nvl(zc->zc_name, zc->zc_value,
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tmpnvl);
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fnvlist_add_nvlist(nvl, "snaps", tmpnvl);
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fnvlist_free(tmpnvl);
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nvlist_free(innvl);
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/* strip dataset part from zc->zc_name */
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zc->zc_name[strcspn(zc->zc_name, "/@")] = '\0';
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return (nvl);
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break;
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case ZFS_IOC_SPACE_SNAPS:
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nvl = fnvlist_alloc();
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fnvlist_add_string(nvl, "firstsnap", zc->zc_value);
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if (innvl != NULL)
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nvlist_free(innvl);
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return (nvl);
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break;
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case ZFS_IOC_DESTROY_SNAPS:
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if (innvl == NULL && cflag == ZFS_CMD_COMPAT_DEADMAN)
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goto out;
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nvl = fnvlist_alloc();
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if (innvl != NULL) {
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fnvlist_add_nvlist(nvl, "snaps", innvl);
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} else {
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/*
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* We are probably called by even older binaries,
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* allocate and populate nvlist with recursive
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* snapshots
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*/
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if (zfs_component_namecheck(zc->zc_value, NULL,
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NULL) == 0) {
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tmpnvl = fnvlist_alloc();
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if (dmu_get_recursive_snaps_nvl(zc->zc_name,
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zc->zc_value, tmpnvl) == 0)
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fnvlist_add_nvlist(nvl, "snaps",
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tmpnvl);
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nvlist_free(tmpnvl);
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}
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}
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if (innvl != NULL)
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nvlist_free(innvl);
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/* strip dataset part from zc->zc_name */
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zc->zc_name[strcspn(zc->zc_name, "/@")] = '\0';
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return (nvl);
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break;
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case ZFS_IOC_HOLD:
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nvl = fnvlist_alloc();
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tmpnvl = fnvlist_alloc();
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if (zc->zc_cleanup_fd != -1)
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fnvlist_add_int32(nvl, "cleanup_fd",
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(int32_t)zc->zc_cleanup_fd);
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if (zc->zc_cookie) {
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hnvl = fnvlist_alloc();
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if (dmu_get_recursive_snaps_nvl(zc->zc_name,
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zc->zc_value, hnvl) == 0) {
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elem = NULL;
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while ((elem = nvlist_next_nvpair(hnvl,
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elem)) != NULL) {
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nvlist_add_string(tmpnvl,
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nvpair_name(elem), zc->zc_string);
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}
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}
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nvlist_free(hnvl);
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} else {
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snapname = kmem_asprintf("%s@%s", zc->zc_name,
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zc->zc_value);
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nvlist_add_string(tmpnvl, snapname, zc->zc_string);
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kmem_free(snapname, strlen(snapname + 1));
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}
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fnvlist_add_nvlist(nvl, "holds", tmpnvl);
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nvlist_free(tmpnvl);
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if (innvl != NULL)
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nvlist_free(innvl);
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/* strip dataset part from zc->zc_name */
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|
|
zc->zc_name[strcspn(zc->zc_name, "/@")] = '\0';
|
||
|
|
return (nvl);
|
||
|
|
break;
|
||
|
|
case ZFS_IOC_RELEASE:
|
||
|
|
nvl = fnvlist_alloc();
|
||
|
|
tmpnvl = fnvlist_alloc();
|
||
|
|
if (zc->zc_cookie) {
|
||
|
|
hnvl = fnvlist_alloc();
|
||
|
|
if (dmu_get_recursive_snaps_nvl(zc->zc_name,
|
||
|
|
zc->zc_value, hnvl) == 0) {
|
||
|
|
elem = NULL;
|
||
|
|
while ((elem = nvlist_next_nvpair(hnvl,
|
||
|
|
elem)) != NULL) {
|
||
|
|
fnvlist_add_boolean(tmpnvl,
|
||
|
|
zc->zc_string);
|
||
|
|
fnvlist_add_nvlist(nvl,
|
||
|
|
nvpair_name(elem), tmpnvl);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
nvlist_free(hnvl);
|
||
|
|
} else {
|
||
|
|
snapname = kmem_asprintf("%s@%s", zc->zc_name,
|
||
|
|
zc->zc_value);
|
||
|
|
fnvlist_add_boolean(tmpnvl, zc->zc_string);
|
||
|
|
fnvlist_add_nvlist(nvl, snapname, tmpnvl);
|
||
|
|
kmem_free(snapname, strlen(snapname + 1));
|
||
|
|
}
|
||
|
|
nvlist_free(tmpnvl);
|
||
|
|
if (innvl != NULL)
|
||
|
|
nvlist_free(innvl);
|
||
|
|
/* strip dataset part from zc->zc_name */
|
||
|
|
zc->zc_name[strcspn(zc->zc_name, "/@")] = '\0';
|
||
|
|
return (nvl);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
out:
|
||
|
|
return (innvl);
|
||
|
|
}
|
||
|
|
|
||
|
|
nvlist_t *
|
||
|
|
zfs_ioctl_compat_outnvl(zfs_cmd_t *zc, nvlist_t *outnvl, const int vec,
|
||
|
|
const int cflag)
|
||
|
|
{
|
||
|
|
nvlist_t *tmpnvl;
|
||
|
|
|
||
|
|
if (cflag == ZFS_CMD_COMPAT_NONE || cflag == ZFS_CMD_COMPAT_LZC ||
|
||
|
|
cflag == ZFS_CMD_COMPAT_ZCMD || cflag == ZFS_CMD_COMPAT_EDBP ||
|
||
|
|
cflag == ZFS_CMD_COMPAT_RESUME || cflag == ZFS_CMD_COMPAT_INLANES)
|
||
|
|
return (outnvl);
|
||
|
|
|
||
|
|
switch (vec) {
|
||
|
|
case ZFS_IOC_SPACE_SNAPS:
|
||
|
|
(void) nvlist_lookup_uint64(outnvl, "used", &zc->zc_cookie);
|
||
|
|
(void) nvlist_lookup_uint64(outnvl, "compressed",
|
||
|
|
&zc->zc_objset_type);
|
||
|
|
(void) nvlist_lookup_uint64(outnvl, "uncompressed",
|
||
|
|
&zc->zc_perm_action);
|
||
|
|
nvlist_free(outnvl);
|
||
|
|
/* return empty outnvl */
|
||
|
|
tmpnvl = fnvlist_alloc();
|
||
|
|
return (tmpnvl);
|
||
|
|
break;
|
||
|
|
case ZFS_IOC_CREATE:
|
||
|
|
case ZFS_IOC_CLONE:
|
||
|
|
case ZFS_IOC_HOLD:
|
||
|
|
case ZFS_IOC_RELEASE:
|
||
|
|
nvlist_free(outnvl);
|
||
|
|
/* return empty outnvl */
|
||
|
|
tmpnvl = fnvlist_alloc();
|
||
|
|
return (tmpnvl);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
return (outnvl);
|
||
|
|
}
|
||
|
|
#endif /* KERNEL */
|