3f2295fee5
This single function takes a where argument to indicate the kind of metadata to "size". This way we can also get rid of the "padding" field in the scheme structure. This should make it a little more understandable what's going on.
70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
/*-
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* Copyright (c) 2014 Juniper Networks, Inc.
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/gpt.h>
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#include <sys/linker_set.h>
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#include <sys/queue.h>
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#include <stdlib.h>
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#include <uuid.h>
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#include "mkimg.h"
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#include "scheme.h"
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static uuid_t gpt_uuid_efi = GPT_ENT_TYPE_EFI;
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static struct mkimg_alias gpt_aliases[] = {
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{ "efi", ALIAS_PTR(&gpt_uuid_efi) },
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{ NULL, 0 }
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};
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static u_int
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gpt_metadata(u_int where, u_int parts, u_int secsz)
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{
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u_int ents, secs;
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if (where != SCHEME_META_IMG_START && where != SCHEME_META_IMG_START)
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return (0);
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ents = secsz / sizeof(struct gpt_ent);
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secs = (parts + ents - 1) / ents;
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secs += (where == SCHEME_META_IMG_START) ? 2 : 1;
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return (secs);
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}
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static struct mkimg_scheme gpt_scheme = {
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.name = "gpt",
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.description = "GUID Partition Table",
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.aliases = gpt_aliases,
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.metadata = gpt_metadata,
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.nparts = 4096
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};
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SCHEME_DEFINE(gpt_scheme);
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