201 lines
5.3 KiB
Groff
201 lines
5.3 KiB
Groff
.\"
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.\" Copyright (c) 2017 Kyle Kneitinger
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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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.\" This manual page is based on the mp(3X) manual page from Sun Release
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.\" 4.1, dated 7 September 1989. It's an old, crufty, and relatively ugly
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.\" manual page, but it does document what appears to be the "traditional"
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.\" libmp interface.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd July 25, 2018
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.Dt LIBBE 3
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.Os
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.Sh NAME
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.Nm libbe
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.Nd library for creating, destroying and modifying ZFS boot environments.
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.Sh SYNOPSIS
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.In be.h
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.Pp
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Function prototypes are given in the main body of the text.
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.Pp
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Applications using this interface must be linked with
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.Fl l Ns Ar be
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.Sh DESCRIPTION
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.Pp
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.Nm
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interfaces with libzfs to provide a set of functions for various operations
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regarding ZFS boot environments including "deep" boot environments in which
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a boot environments has child datasets.
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.Pp
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A context structure is passed to each function, allowing for a small amount
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of state to be retained, such as errors from previous operations.
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.\" TODO: describe break on err functionality
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.Pp
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.Ft "libbe_handle_t *" Ns
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.Fn libbe_init "void" ;
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.Pp
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.Ft void
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.Fn libbe_close "libbe_handle_t *" ;
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.Pp
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.Ft "const char *" Ns
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.Fn be_active_name "libbe_handle_t *" ;
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.Pp
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.Ft "const char *" Ns
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.Fn be_active_path "libbe_handle_t *" ;
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.Pp
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.Ft "const char *" Ns
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.Fn be_root_path "libbe_handle_t *" ;
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.Pp
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.Ft "nvlist_t *" Ns
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.Fn libbe_handle_t "libbe_handle_t " ;
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.Pp
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.Ft int
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.Fn be_create "libbe_handle_t *, char *" ;
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.Pp
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.Ft int
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.Fn be_create_from_existing "libbe_handle_t *, const char *, const char *" ;
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.Pp
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.Ft int
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.Fn be_rename "libbe_handle_t *, char *, char *" ;
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.Pp
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.\" TODO: Write up of destroy options
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.\" typedef enum {
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.\" BE_DESTROY_FORCE = 1 << 0,
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.\" } be_destroy_opt_t;
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.Ft int
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.Fn be_destroy "libbe_handle_t *, char *, int" ;
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.Pp
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.\" TODO: Write up of mount options
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.\" typedef enum {
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.\" BE_MNT_FORCE = 1 << 0,
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.\" BE_MNT_DEEP = 1 << 1,
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.\" } be_mount_opt_t;
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.Ft int
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.Fn be_mount "libbe_handle_t *, char *, char *, int" ;
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.Pp
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.Ft int
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.Fn be_unmount "libbe_handle_t *, char *, int" ;
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.Pp
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.Ft int
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.Fn libbe_errno "libbe_handle_t *" ;
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.Pp
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.Ft "const char *" Ns
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.Fn libbe_error_description "libbe_handle_t *" ;
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.Pp
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.Ft void
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.Fn libbe_print_on_error "libbe_handle_t *, bool" ;
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.Pp
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.Ft int
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.Fn be_root_concat "libbe_handle_t *, const char *, char *" ;
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.Pp
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.Ft int
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.Fn be_validate_name "libbe_handle_t *, const char *" ;
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.Pp
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.Ft int
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.Fn be_validate_snap "libbe_handle_t *, const char *" ;
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.Pp
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.Ft bool
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.Fn be_exists "libbe_handle_t *, char *" ;
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.Pp
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.Ft int
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.Fn be_export "libbe_handle_t *, char *, int fd" ;
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.Pp
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.Ft int
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.Fn be_import "libbe_handle_t *, char *, int fd" ;
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.Pp
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.Ft int
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.Fn be_add_child "libbe_handle_t *, char *, bool" ;
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.Pp
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.Ft int
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.Fn be_prop_list_alloc "nvlist_t **" ;
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.Pp
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.Ft int
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.Fn be_get_bootenv_props "libbe_handle_t *, nvlist_t *" ;
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.Pp
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.Ft void
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.Fn be_prop_list_free "nvlist_t *" ;
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.\" .Ft void
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.\" .Fn mp_mfree "MINT *mp" ;
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.\" .Bd -ragged -offset indent
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.\" .Fn mp_itom
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.\" returns an
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.\" .Vt MINT
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.\" with the value of
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.\" .Fa n .
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.\" .Fn mp_xtom
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.\" returns an
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.\" .Vt MINT
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.\" with the value of
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.\" .Fa s ,
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.\" which is treated to be in hexadecimal.
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.\" The return values from
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.\" .Fn mp_itom
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.\" and
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.\" .Fn mp_xtom
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.\" must be released with
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.\" .Fn mp_mfree
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.\" when they are no longer needed.
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.\" .Fn mp_mtox
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.\" returns a null-terminated hexadecimal string having the value of
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.\" .Fa mp ;
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.\" its return value must be released with
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.\" .Fn free
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.\" .Pq Xr free 3
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.\" when it is no longer needed.
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.\" .Ed
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.\" .Pp
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.Sh DIAGNOSTICS
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Upon error, one of the following values will be returned.
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.\" TODO: make each entry on its own line.
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.Bd -ragged -offset indent
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BE_ERR_SUCCESS,
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BE_ERR_INVALIDNAME,
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BE_ERR_EXISTS,
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BE_ERR_NOENT,
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BE_ERR_PERMS,
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BE_ERR_DESTROYACT,
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BE_ERR_DESTROYMNT,
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BE_ERR_PATHLEN,
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BE_ERR_INVORIGIN,
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BE_ERR_NOORIGIN,
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BE_ERR_MOUNTED,
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BE_ERR_NOMOUNT,
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BE_ERR_ZFSOPEN,
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BE_ERR_ZFSCLONE,
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BE_ERR_UNKNOWN
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.Ed
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.Sh SEE ALSO
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.Xr be 1 ,
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.Sh HISTORY
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.Nm
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and it's corresponding command,
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.Xr be 3 ,
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were written as a 2017 Google Summer of Code project with Allan Jude serving
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as a mentor.
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.\" TODO: update when implementation complete.
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.\" .Sh BUGS
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