freebsd-nq/stand/zfs/libzfs.h
Warner Losh de04d704a9 Use the actual struct devdesc at the start of all *_devdesc structs
The current system is fragile and requires very careful layout of all
*_devdesc structures. It also makes it hard to change the base
devdesc. Take a page from CAM and put the 'header' in all the derived
classes and adjust the code to match.

For OFW, move the iHandle h_handle out of a slot conflicting with
d_opendata. Due to quirks in the alignment rules, this worked.
However changing the code to use d_opendata storage now that it's a
pointer is hard, so just have a separate field for it.

All other cleanups were to make the *_devdesc structures match where
they'd taken some liberties that were none-the-less compatible enough
to work.
2018-03-12 21:39:49 +00:00

90 lines
2.7 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.
* Arch-specific device descriptors should be binary compatible with this
* structure if they are to support ZFS.
*/
/* Note: Must match the 'struct devdesc' in stand.h */
struct zfs_devdesc {
struct devdesc dd;
uint64_t pool_guid;
uint64_t root_guid;
};
#ifdef LOADER_GELI_SUPPORT
#include <crypto/intake.h>
#endif
struct zfs_boot_args
{
uint32_t size;
uint32_t reserved;
uint64_t pool;
uint64_t root;
uint64_t primary_pool;
uint64_t primary_vdev;
union {
char gelipw[256];
struct {
char notapw; /*
* single null byte to stop keybuf
* being interpreted as a password
*/
uint32_t keybuf_sentinel;
#ifdef LOADER_GELI_SUPPORT
struct keybuf *keybuf;
#else
void *keybuf;
#endif
};
};
};
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);
uint64_t ldi_get_size(void *);
void init_zfs_bootenv(const char *currdev);
int zfs_bootenv(const char *name);
int zfs_belist_add(const char *name, uint64_t __unused);
int zfs_set_env(void);
extern struct devsw zfs_dev;
extern struct fs_ops zfs_fsops;
#endif /*_BOOT_LIBZFS_H_*/