f1aba489c1
If the system was booted with ZFS, a new menu item (#7) appears It contains an autogenerated list of ZFS Boot Environments This allows the user to switch to an alternate root file system Use Cases: - Revert a failed upgrade - Concurrently run different versions of FreeBSD with common home directory - Easier integration with the sysadmin/beadm utility Requested by: many Reviewed by: dteske MFC after: 10 days Relnotes: yes Sponsored by: ScaleEngine Inc. Differential Revision: https://reviews.freebsd.org/D3167
73 lines
2.4 KiB
C
73 lines
2.4 KiB
C
/*-
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* Copyright (c) 2012 Andriy Gapon <avg@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _BOOT_LIBZFS_H_
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#define _BOOT_LIBZFS_H_
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#define ZFS_MAXNAMELEN 256
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/*
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* ZFS fully-qualified device descriptor.
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* Note, this must match the 'struct devdesc' declaration in bootstrap.h.
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* Arch-specific device descriptors should be binary compatible with this
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* structure if they are to support ZFS.
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*/
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struct zfs_devdesc
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{
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struct devsw *d_dev;
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int d_type;
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int d_unit;
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void *d_opendata;
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uint64_t pool_guid;
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uint64_t root_guid;
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};
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struct zfs_boot_args
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{
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uint32_t size;
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uint32_t reserved;
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uint64_t pool;
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uint64_t root;
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uint64_t primary_pool;
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uint64_t primary_vdev;
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};
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int zfs_parsedev(struct zfs_devdesc *dev, const char *devspec,
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const char **path);
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char *zfs_fmtdev(void *vdev);
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int zfs_probe_dev(const char *devname, uint64_t *pool_guid);
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int zfs_list(const char *name);
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int zfs_bootenv(const char *name);
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int zfs_belist_add(const char *name);
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int zfs_set_env(void);
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extern struct devsw zfs_dev;
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extern struct fs_ops zfs_fsops;
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#endif /*_BOOT_LIBZFS_H_*/
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