Line data    Source code

       1             : /*   SPDX-License-Identifier: BSD-3-Clause
       2             :  *   Copyright (C) 2017 Intel Corporation.
       3             :  *   All rights reserved.
       4             :  */
       5             : 
       6             : /** \file
       7             :  * GPT internal Interface
       8             :  */
       9             : 
      10             : #ifndef SPDK_INTERNAL_GPT_H
      11             : #define SPDK_INTERNAL_GPT_H
      12             : 
      13             : #include "spdk/stdinc.h"
      14             : 
      15             : #include "spdk/gpt_spec.h"
      16             : #include "spdk/log.h"
      17             : 
      18             : #define SPDK_GPT_PART_TYPE_GUID     SPDK_GPT_GUID(0x6527994e, 0x2c5a, 0x4eec, 0x9613, 0x8f5944074e8b)
      19             : 
      20             : /* PART_TYPE_GUID_OLD partitions will be constructed as bdevs with one fewer block than expected.
      21             :  * See GitHub issue #2801.
      22             :  */
      23             : #ifdef REGISTER_GUID_DEPRECATION
      24             : /* Register the deprecation in the header file, to make it clear to readers that this GUID
      25             :  * shouldn't be used for new SPDK GPT partitions.  We will never actually log this deprecation
      26             :  * though, since we are not recommending that users try to migrate existing partitions with the
      27             :  * old GUID to the new GUID. Wrap it in this REGISTER_GUID_DEPRECATION flag to avoid defining
      28             :  * this deprecation in multiple compilation units.
      29             :  */
      30           0 : SPDK_LOG_DEPRECATION_REGISTER(old_gpt_guid, "old gpt guid", "Never", 0)
      31             : #endif
      32             : #define SPDK_GPT_PART_TYPE_GUID_OLD SPDK_GPT_GUID(0x7c5222bd, 0x8f5d, 0x4087, 0x9c00, 0xbf9843c7b58c)
      33             : 
      34             : #define SPDK_GPT_BUFFER_SIZE 32768  /* 32KB */
      35             : #define SPDK_GPT_GUID_EQUAL(x,y) (memcmp(x, y, sizeof(struct spdk_gpt_guid)) == 0)
      36             : 
      37             : enum spdk_gpt_parse_phase {
      38             :         SPDK_GPT_PARSE_PHASE_INVALID = 0,
      39             :         SPDK_GPT_PARSE_PHASE_PRIMARY,
      40             :         SPDK_GPT_PARSE_PHASE_SECONDARY,
      41             : };
      42             : 
      43             : struct spdk_gpt {
      44             :         uint8_t parse_phase;
      45             :         unsigned char *buf;
      46             :         uint64_t buf_size;
      47             :         uint64_t lba_start;
      48             :         uint64_t lba_end;
      49             :         uint64_t total_sectors;
      50             :         uint32_t sector_size;
      51             :         struct spdk_gpt_header *header;
      52             :         struct spdk_gpt_partition_entry *partitions;
      53             : };
      54             : 
      55             : int gpt_parse_mbr(struct spdk_gpt *gpt);
      56             : int gpt_parse_partition_table(struct spdk_gpt *gpt);
      57             : 
      58             : #endif  /* SPDK_INTERNAL_GPT_H */