diff options
Diffstat (limited to 'cddl')
| -rw-r--r-- | cddl/contrib/opensolaris/lib/libzfs/common/libzfs_impl.h | 35 |
1 files changed, 26 insertions, 9 deletions
diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_impl.h b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_impl.h index 1c46d32..be07187 100644 --- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_impl.h +++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_impl.h @@ -24,6 +24,7 @@ * Copyright (c) 2011 Pawel Jakub Dawidek <pawel@dawidek.net>. * All rights reserved. * Copyright (c) 2011 by Delphix. All rights reserved. + * Copyright (c) 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved. */ #ifndef _LIBFS_IMPL_H @@ -216,6 +217,7 @@ extern void libzfs_fru_clear(libzfs_handle_t *, boolean_t); #ifndef sun static int zfs_kernel_version = 0; +static int zfs_ioctl_version = 0; /* * This is FreeBSD version of ioctl, because Solaris' ioctl() updates @@ -225,19 +227,34 @@ static int zfs_kernel_version = 0; static __inline int zcmd_ioctl(int fd, unsigned long cmd, zfs_cmd_t *zc) { - size_t oldsize, zfs_kernel_version_size; + size_t oldsize, zfs_kernel_version_size, zfs_ioctl_version_size; int version, ret, cflag = ZFS_CMD_COMPAT_NONE; - zfs_kernel_version_size = sizeof(zfs_kernel_version); - if (zfs_kernel_version == 0) { - sysctlbyname("vfs.zfs.version.spa", &zfs_kernel_version, - &zfs_kernel_version_size, NULL, 0); + zfs_ioctl_version_size = sizeof(zfs_ioctl_version); + if (zfs_ioctl_version == 0) { + sysctlbyname("vfs.zfs.version.ioctl", &zfs_ioctl_version, + &zfs_ioctl_version_size, NULL, 0); } - if (zfs_kernel_version == SPA_VERSION_15 || - zfs_kernel_version == SPA_VERSION_14 || - zfs_kernel_version == SPA_VERSION_13) - cflag = ZFS_CMD_COMPAT_V15; + /* + * If vfs.zfs.version.ioctl is not defined, assume we have v28 + * compatible binaries and use vfs.zfs.version.spa to test for v15 + */ + if (zfs_ioctl_version < ZFS_IOCVER_DEADMAN) { + cflag = ZFS_CMD_COMPAT_V28; + zfs_kernel_version_size = sizeof(zfs_kernel_version); + + if (zfs_kernel_version == 0) { + sysctlbyname("vfs.zfs.version.spa", + &zfs_kernel_version, + &zfs_kernel_version_size, NULL, 0); + } + + if (zfs_kernel_version == SPA_VERSION_15 || + zfs_kernel_version == SPA_VERSION_14 || + zfs_kernel_version == SPA_VERSION_13) + cflag = ZFS_CMD_COMPAT_V15; + } oldsize = zc->zc_nvlist_dst_size; ret = zcmd_ioctl_compat(fd, cmd, zc, cflag); |
