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/*
* 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 http://www.opensolaris.org/os/licensing.
* 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 2010 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
* Portions Copyright 2005, 2010, Oracle and/or its affiliates.
* All rights reserved.
* Use is subject to license terms.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/cred.h>
#include <sys/dmu.h>
#include <sys/zio.h>
#include <sys/nvpair.h>
#include <sys/dsl_deleg.h>
#include <sys/zfs_ioctl.h>
#include "zfs_ioctl_compat.h"
/*
* FreeBSD zfs_cmd compatibility with v15 and older binaries
* appropriately remap/extend the zfs_cmd_t structure
*/
void
zfs_cmd_compat_get(zfs_cmd_t *zc, caddr_t addr, const int cflag)
{
zfs_cmd_v15_t *zc_c;
if (cflag == ZFS_CMD_COMPAT_V15) {
zc_c = (void *)addr;
/* zc */
strlcpy(zc->zc_name,zc_c->zc_name,MAXPATHLEN);
strlcpy(zc->zc_value,zc_c->zc_value,MAXPATHLEN);
strlcpy(zc->zc_string,zc_c->zc_string,MAXPATHLEN);
zc->zc_guid = zc_c->zc_guid;
zc->zc_nvlist_conf = zc_c->zc_nvlist_conf;
zc->zc_nvlist_conf_size = zc_c->zc_nvlist_conf_size;
zc->zc_nvlist_src = zc_c->zc_nvlist_src;
zc->zc_nvlist_src_size = zc_c->zc_nvlist_src_size;
zc->zc_nvlist_dst = zc_c->zc_nvlist_dst;
zc->zc_nvlist_dst_size = zc_c->zc_nvlist_dst_size;
zc->zc_cookie = zc_c->zc_cookie;
zc->zc_objset_type = zc_c->zc_objset_type;
zc->zc_perm_action = zc_c->zc_perm_action;
zc->zc_history = zc_c->zc_history;
zc->zc_history_len = zc_c->zc_history_len;
zc->zc_history_offset = zc_c->zc_history_offset;
zc->zc_obj = zc_c->zc_obj;
zc->zc_share = zc_c->zc_share;
zc->zc_jailid = zc_c->zc_jailid;
zc->zc_objset_stats = zc_c->zc_objset_stats;
zc->zc_begin_record = zc_c->zc_begin_record;
/* zc->zc_inject_record */
zc->zc_inject_record.zi_objset =
zc_c->zc_inject_record.zi_objset;
zc->zc_inject_record.zi_object =
zc_c->zc_inject_record.zi_object;
zc->zc_inject_record.zi_start =
zc_c->zc_inject_record.zi_start;
zc->zc_inject_record.zi_end =
zc_c->zc_inject_record.zi_end;
zc->zc_inject_record.zi_guid =
zc_c->zc_inject_record.zi_guid;
zc->zc_inject_record.zi_level =
zc_c->zc_inject_record.zi_level;
zc->zc_inject_record.zi_error =
zc_c->zc_inject_record.zi_error;
zc->zc_inject_record.zi_type =
zc_c->zc_inject_record.zi_type;
zc->zc_inject_record.zi_freq =
zc_c->zc_inject_record.zi_freq;
zc->zc_inject_record.zi_failfast =
zc_c->zc_inject_record.zi_failfast;
}
}
void
zfs_cmd_compat_put(zfs_cmd_t *zc, caddr_t addr, const int cflag)
{
zfs_cmd_v15_t *zc_c;
switch (cflag) {
case ZFS_CMD_COMPAT_V15:
zc_c = (void *)addr;
/* zc */
strlcpy(zc_c->zc_name,zc->zc_name,MAXPATHLEN);
strlcpy(zc_c->zc_value,zc->zc_value,MAXPATHLEN);
strlcpy(zc_c->zc_string,zc->zc_string,MAXPATHLEN);
zc_c->zc_guid = zc->zc_guid;
zc_c->zc_nvlist_conf = zc->zc_nvlist_conf;
zc_c->zc_nvlist_conf_size = zc->zc_nvlist_conf_size;
zc_c->zc_nvlist_src = zc->zc_nvlist_src;
zc_c->zc_nvlist_src_size = zc->zc_nvlist_src_size;
zc_c->zc_nvlist_dst = zc->zc_nvlist_dst;
zc_c->zc_nvlist_dst_size = zc->zc_nvlist_dst_size;
zc_c->zc_cookie = zc->zc_cookie;
zc_c->zc_objset_type = zc->zc_objset_type;
zc_c->zc_perm_action = zc->zc_perm_action;
zc_c->zc_history = zc->zc_history;
zc_c->zc_history_len = zc->zc_history_len;
zc_c->zc_history_offset = zc->zc_history_offset;
zc_c->zc_obj = zc->zc_obj;
zc_c->zc_share = zc->zc_share;
zc_c->zc_jailid = zc->zc_jailid;
zc_c->zc_objset_stats = zc->zc_objset_stats;
zc_c->zc_begin_record = zc->zc_begin_record;
/* zc_inject_record */
zc_c->zc_inject_record.zi_objset =
zc->zc_inject_record.zi_objset;
zc_c->zc_inject_record.zi_object =
zc->zc_inject_record.zi_object;
zc_c->zc_inject_record.zi_start =
zc->zc_inject_record.zi_start;
zc_c->zc_inject_record.zi_end =
zc->zc_inject_record.zi_end;
zc_c->zc_inject_record.zi_guid =
zc->zc_inject_record.zi_guid;
zc_c->zc_inject_record.zi_level =
zc->zc_inject_record.zi_level;
zc_c->zc_inject_record.zi_error =
zc->zc_inject_record.zi_error;
zc_c->zc_inject_record.zi_type =
zc->zc_inject_record.zi_type;
zc_c->zc_inject_record.zi_freq =
zc->zc_inject_record.zi_freq;
zc_c->zc_inject_record.zi_failfast =
zc->zc_inject_record.zi_failfast;
break;
}
}
static int
zfs_ioctl_compat_get_nvlist(uint64_t nvl, size_t size, int iflag,
nvlist_t **nvp)
{
char *packed;
int error;
nvlist_t *list = NULL;
/*
* Read in and unpack the user-supplied nvlist.
*/
if (size == 0)
return (EINVAL);
#ifdef _KERNEL
packed = kmem_alloc(size, KM_SLEEP);
if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size,
iflag)) != 0) {
kmem_free(packed, size);
return (error);
}
#else
packed = (void *)(uintptr_t)nvl;
#endif
error = nvlist_unpack(packed, size, &list, 0);
#ifdef _KERNEL
kmem_free(packed, size);
#endif
if (error != 0)
return (error);
*nvp = list;
return (0);
}
static int
zfs_ioctl_compat_put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl)
{
char *packed = NULL;
int error = 0;
size_t size;
VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0);
#ifdef _KERNEL
packed = kmem_alloc(size, KM_SLEEP);
VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE,
KM_SLEEP) == 0);
if (ddi_copyout(packed,
(void *)(uintptr_t)zc->zc_nvlist_dst, size, zc->zc_iflags) != 0)
error = EFAULT;
kmem_free(packed, size);
#else
packed = (void *)(uintptr_t)zc->zc_nvlist_dst;
VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE,
0) == 0);
#endif
zc->zc_nvlist_dst_size = size;
return (error);
}
static void
zfs_ioctl_compat_fix_stats_nvlist(nvlist_t *nvl)
{
nvlist_t **child;
nvlist_t *nvroot = NULL;
vdev_stat_t *vs;
uint_t c, children, nelem;
if (nvlist_lookup_nvlist_array(nvl, ZPOOL_CONFIG_CHILDREN,
&child, &children) == 0) {
for (c = 0; c < children; c++) {
zfs_ioctl_compat_fix_stats_nvlist(child[c]);
}
}
if (nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_VDEV_TREE,
&nvroot) == 0)
zfs_ioctl_compat_fix_stats_nvlist(nvroot);
#ifdef _KERNEL
if ((nvlist_lookup_uint64_array(nvl, ZPOOL_CONFIG_VDEV_STATS,
#else
if ((nvlist_lookup_uint64_array(nvl, "stats",
#endif
(uint64_t **)&vs, &nelem) == 0)) {
nvlist_add_uint64_array(nvl,
#ifdef _KERNEL
"stats",
#else
ZPOOL_CONFIG_VDEV_STATS,
#endif
(uint64_t *)vs, nelem);
#ifdef _KERNEL
nvlist_remove(nvl, ZPOOL_CONFIG_VDEV_STATS,
#else
nvlist_remove(nvl, "stats",
#endif
DATA_TYPE_UINT64_ARRAY);
}
}
static int
zfs_ioctl_compat_fix_stats(zfs_cmd_t *zc, const int cflag)
{
nvlist_t *nv, *nvp = NULL;
nvpair_t *elem;
int error;
if ((error = zfs_ioctl_compat_get_nvlist(zc->zc_nvlist_dst,
zc->zc_nvlist_dst_size, zc->zc_iflags, &nv)) != 0)
return (error);
if (cflag == 5) { /* ZFS_IOC_POOL_STATS */
elem = NULL;
while ((elem = nvlist_next_nvpair(nv, elem)) != NULL) {
if (nvpair_value_nvlist(elem, &nvp) == 0)
zfs_ioctl_compat_fix_stats_nvlist(nvp);
}
elem = NULL;
} else
zfs_ioctl_compat_fix_stats_nvlist(nv);
error = zfs_ioctl_compat_put_nvlist(zc, nv);
nvlist_free(nv);
return (error);
}
static int
zfs_ioctl_compat_pool_get_props(zfs_cmd_t *zc)
{
nvlist_t *nv, *nva = NULL;
int error;
if ((error = zfs_ioctl_compat_get_nvlist(zc->zc_nvlist_dst,
zc->zc_nvlist_dst_size, zc->zc_iflags, &nv)) != 0)
return (error);
#ifdef _KERNEL
if (nvlist_lookup_nvlist(nv, "allocated", &nva) == 0) {
nvlist_add_nvlist(nv, "used", nva);
nvlist_remove(nv, "allocated", DATA_TYPE_NVLIST);
}
if (nvlist_lookup_nvlist(nv, "free", &nva) == 0) {
nvlist_add_nvlist(nv, "available", nva);
nvlist_remove(nv, "free", DATA_TYPE_NVLIST);
}
#else
if (nvlist_lookup_nvlist(nv, "used", &nva) == 0) {
nvlist_add_nvlist(nv, "allocated", nva);
nvlist_remove(nv, "used", DATA_TYPE_NVLIST);
}
if (nvlist_lookup_nvlist(nv, "available", &nva) == 0) {
nvlist_add_nvlist(nv, "free", nva);
nvlist_remove(nv, "available", DATA_TYPE_NVLIST);
}
#endif
error = zfs_ioctl_compat_put_nvlist(zc, nv);
nvlist_free(nv);
return (error);
}
#ifndef _KERNEL
int
zcmd_ioctl_compat(int fd, unsigned long cmd, zfs_cmd_t *zc, const int cflag)
{
int nc, ret;
void *zc_c;
unsigned long ncmd;
if (cflag == ZFS_CMD_COMPAT_NONE) {
ret = ioctl(fd, cmd, zc);
return (ret);
}
if (cflag == ZFS_CMD_COMPAT_V15) {
nc = zfs_ioctl_v28_to_v15[ZFS_IOC(cmd)];
zc_c = malloc(sizeof(zfs_cmd_v15_t));
ncmd = _IOWR('Z', nc, struct zfs_cmd_v15);
} else
return (EINVAL);
if (ZFS_IOC(ncmd) == ZFS_IOC_COMPAT_FAIL)
return (ENOTSUP);
zfs_cmd_compat_put(zc, (caddr_t)zc_c, cflag);
ret = ioctl(fd, ncmd, zc_c);
if (cflag == ZFS_CMD_COMPAT_V15 &&
nc == 2 /* ZFS_IOC_POOL_IMPORT */)
ret = ioctl(fd, _IOWR('Z', 4 /* ZFS_IOC_POOL_CONFIGS */,
struct zfs_cmd_v15), zc_c);
zfs_cmd_compat_get(zc, (caddr_t)zc_c, cflag);
free(zc_c);
switch (nc) {
case 2: /* ZFS_IOC_POOL_IMPORT */
case 4: /* ZFS_IOC_POOL_CONFIGS */
case 5: /* ZFS_IOC_POOL_STATS */
case 6: /* ZFS_IOC_POOL_TRYIMPORT */
zfs_ioctl_compat_fix_stats(zc, nc);
break;
case 41: /* ZFS_IOC_POOL_GET_PROPS (v15) */
zfs_ioctl_compat_pool_get_props(zc);
break;
}
return (ret);
}
#else /* _KERNEL */
void
zfs_ioctl_compat_pre(zfs_cmd_t *zc, int *vec, const int cflag)
{
if (cflag == ZFS_CMD_COMPAT_V15)
switch (*vec) {
case 7: /* ZFS_IOC_POOL_SCRUB (v15) */
zc->zc_cookie = POOL_SCAN_SCRUB;
break;
}
}
void
zfs_ioctl_compat_post(zfs_cmd_t *zc, int vec, const int cflag)
{
if (cflag == ZFS_CMD_COMPAT_V15) {
switch (vec) {
case 4: /* ZFS_IOC_POOL_CONFIGS */
case 5: /* ZFS_IOC_POOL_STATS */
case 6: /* ZFS_IOC_POOL_TRYIMPORT */
zfs_ioctl_compat_fix_stats(zc, vec);
break;
case 41: /* ZFS_IOC_POOL_GET_PROPS (v15) */
zfs_ioctl_compat_pool_get_props(zc);
break;
}
}
}
#endif /* KERNEL */