0744f10860
Modify existing code of parsing primary partition table to support parsing the secondary. Main difference of these two tables is that they have inverse buffer layout. For primary table, header is in front of partition entries. And for secondary table, header is after partition entries. So add helper functions to extract header and partition entries buffer region from primary or secondary table based on current parse phase. Split the exported funtion spdk_gpt_parse into two functions spdk_gpt_parse_mbr and spdk_gpt_parse_partition_table. So spdk_gpt_parse_partition_table could be used to parse both primary and secondary table. Change-Id: I7f7827e0ee7e3f1b2e88c56607ee5b702fb2490c Signed-off-by: lorneli <lorneli@163.com> Reviewed-on: https://review.gerrithub.io/c/441200 Reviewed-by: wuzhouhui <wuzhouhui@kingsoft.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: GangCao <gang.cao@intel.com> Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com> Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
71 lines
2.5 KiB
C
71 lines
2.5 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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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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*
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* * 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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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/** \file
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* GPT internal Interface
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*/
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#ifndef SPDK_INTERNAL_GPT_H
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#define SPDK_INTERNAL_GPT_H
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#include "spdk/stdinc.h"
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#include "spdk/gpt_spec.h"
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#define SPDK_GPT_PART_TYPE_GUID SPDK_GPT_GUID(0x7c5222bd, 0x8f5d, 0x4087, 0x9c00, 0xbf9843c7b58c)
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#define SPDK_GPT_BUFFER_SIZE 32768 /* 32KB */
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#define SPDK_GPT_GUID_EQUAL(x,y) (memcmp(x, y, sizeof(struct spdk_gpt_guid)) == 0)
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enum spdk_gpt_parse_phase {
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SPDK_GPT_PARSE_PHASE_INVALID = 0,
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SPDK_GPT_PARSE_PHASE_PRIMARY,
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SPDK_GPT_PARSE_PHASE_SECONDARY,
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};
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struct spdk_gpt {
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uint8_t parse_phase;
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unsigned char *buf;
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uint64_t buf_size;
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uint64_t lba_start;
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uint64_t lba_end;
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uint64_t total_sectors;
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uint32_t sector_size;
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struct spdk_gpt_header *header;
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struct spdk_gpt_partition_entry *partitions;
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};
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int spdk_gpt_parse_mbr(struct spdk_gpt *gpt);
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int spdk_gpt_parse_partition_table(struct spdk_gpt *gpt);
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#endif /* SPDK_INTERNAL_GPT_H */
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