freebsd-skq/sys/boot/zfs/libzfs.h
avg ba598b122e zfs boot: export boot/primary pool and vdev guid all the way to kenv
This is work in progress to for znextboot and it also provides
some convenient infrastructure.

MFC after:	20 days
2012-10-06 19:47:24 +00:00

70 lines
2.3 KiB
C

/*-
* Copyright (c) 2012 Andriy Gapon <avg@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _BOOT_LIBZFS_H_
#define _BOOT_LIBZFS_H_
#define ZFS_MAXNAMELEN 256
/*
* ZFS fully-qualified device descriptor.
* Note, this must match the 'struct devdesc' declaration in bootstrap.h.
* Arch-specific device descriptors should be binary compatible with this
* structure if they are to support ZFS.
*/
struct zfs_devdesc
{
struct devsw *d_dev;
int d_type;
int d_unit;
void *d_opendata;
uint64_t pool_guid;
uint64_t root_guid;
};
struct zfs_boot_args
{
uint32_t size;
uint32_t reserved;
uint64_t pool;
uint64_t root;
uint64_t primary_pool;
uint64_t primary_vdev;
};
int zfs_parsedev(struct zfs_devdesc *dev, const char *devspec,
const char **path);
char *zfs_fmtdev(void *vdev);
int zfs_probe_dev(const char *devname, uint64_t *pool_guid);
int zfs_list(const char *name);
extern struct devsw zfs_dev;
extern struct fs_ops zfs_fsops;
#endif /*_BOOT_LIBZFS_H_*/