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libzfs_impl.h (231946) libzfs_impl.h (248369)
1/*
2 * CDDL HEADER SART
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

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19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2011 Pawel Jakub Dawidek <pawel@dawidek.net>.
25 * All rights reserved.
26 * Copyright (c) 2011 by Delphix. All rights reserved.
1/*
2 * CDDL HEADER SART
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

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19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2011 Pawel Jakub Dawidek <pawel@dawidek.net>.
25 * All rights reserved.
26 * Copyright (c) 2011 by Delphix. All rights reserved.
27 * Copyright (c) 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
27 */
28
29#ifndef _LIBFS_IMPL_H
30#define _LIBFS_IMPL_H
31
32#include <sys/dmu.h>
33#include <sys/fs/zfs.h>
34#include <sys/zfs_ioctl.h>

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211
212extern int zfs_unshare_proto(zfs_handle_t *,
213 const char *, zfs_share_proto_t *);
214
215extern void libzfs_fru_clear(libzfs_handle_t *, boolean_t);
216
217#ifndef sun
218static int zfs_kernel_version = 0;
28 */
29
30#ifndef _LIBFS_IMPL_H
31#define _LIBFS_IMPL_H
32
33#include <sys/dmu.h>
34#include <sys/fs/zfs.h>
35#include <sys/zfs_ioctl.h>

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212
213extern int zfs_unshare_proto(zfs_handle_t *,
214 const char *, zfs_share_proto_t *);
215
216extern void libzfs_fru_clear(libzfs_handle_t *, boolean_t);
217
218#ifndef sun
219static int zfs_kernel_version = 0;
220static int zfs_ioctl_version = 0;
219
220/*
221 * This is FreeBSD version of ioctl, because Solaris' ioctl() updates
222 * zc_nvlist_dst_size even if an error is returned, on FreeBSD if an
223 * error is returned zc_nvlist_dst_size won't be updated.
224 */
225static __inline int
226zcmd_ioctl(int fd, unsigned long cmd, zfs_cmd_t *zc)
227{
221
222/*
223 * This is FreeBSD version of ioctl, because Solaris' ioctl() updates
224 * zc_nvlist_dst_size even if an error is returned, on FreeBSD if an
225 * error is returned zc_nvlist_dst_size won't be updated.
226 */
227static __inline int
228zcmd_ioctl(int fd, unsigned long cmd, zfs_cmd_t *zc)
229{
228 size_t oldsize, zfs_kernel_version_size;
230 size_t oldsize, zfs_kernel_version_size, zfs_ioctl_version_size;
229 int version, ret, cflag = ZFS_CMD_COMPAT_NONE;
230
231 int version, ret, cflag = ZFS_CMD_COMPAT_NONE;
232
231 zfs_kernel_version_size = sizeof(zfs_kernel_version);
232 if (zfs_kernel_version == 0) {
233 sysctlbyname("vfs.zfs.version.spa", &zfs_kernel_version,
234 &zfs_kernel_version_size, NULL, 0);
233 zfs_ioctl_version_size = sizeof(zfs_ioctl_version);
234 if (zfs_ioctl_version == 0) {
235 sysctlbyname("vfs.zfs.version.ioctl", &zfs_ioctl_version,
236 &zfs_ioctl_version_size, NULL, 0);
235 }
236
237 }
238
237 if (zfs_kernel_version == SPA_VERSION_15 ||
238 zfs_kernel_version == SPA_VERSION_14 ||
239 zfs_kernel_version == SPA_VERSION_13)
240 cflag = ZFS_CMD_COMPAT_V15;
239 /*
240 * If vfs.zfs.version.ioctl is not defined, assume we have v28
241 * compatible binaries and use vfs.zfs.version.spa to test for v15
242 */
243 if (zfs_ioctl_version < ZFS_IOCVER_DEADMAN) {
244 cflag = ZFS_CMD_COMPAT_V28;
245 zfs_kernel_version_size = sizeof(zfs_kernel_version);
241
246
247 if (zfs_kernel_version == 0) {
248 sysctlbyname("vfs.zfs.version.spa",
249 &zfs_kernel_version,
250 &zfs_kernel_version_size, NULL, 0);
251 }
252
253 if (zfs_kernel_version == SPA_VERSION_15 ||
254 zfs_kernel_version == SPA_VERSION_14 ||
255 zfs_kernel_version == SPA_VERSION_13)
256 cflag = ZFS_CMD_COMPAT_V15;
257 }
258
242 oldsize = zc->zc_nvlist_dst_size;
243 ret = zcmd_ioctl_compat(fd, cmd, zc, cflag);
244
245 if (ret == 0 && oldsize < zc->zc_nvlist_dst_size) {
246 ret = -1;
247 errno = ENOMEM;
248 }
249
250 return (ret);
251}
252#define ioctl(fd, cmd, zc) zcmd_ioctl((fd), (cmd), (zc))
253#endif /* !sun */
254
255#ifdef __cplusplus
256}
257#endif
258
259#endif /* _LIBFS_IMPL_H */
259 oldsize = zc->zc_nvlist_dst_size;
260 ret = zcmd_ioctl_compat(fd, cmd, zc, cflag);
261
262 if (ret == 0 && oldsize < zc->zc_nvlist_dst_size) {
263 ret = -1;
264 errno = ENOMEM;
265 }
266
267 return (ret);
268}
269#define ioctl(fd, cmd, zc) zcmd_ioctl((fd), (cmd), (zc))
270#endif /* !sun */
271
272#ifdef __cplusplus
273}
274#endif
275
276#endif /* _LIBFS_IMPL_H */