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/* ----------------------------------------------------------------------- *
*
* Copyright 2003-2009 H. Peter Anvin - All Rights Reserved
* Copyright 2009-2010 Intel Corporation; author: H. Peter Anvin
* Copyright 2010 Shao Miller
* Copyright 2010-2015 Michal Soltys
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall
* be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* ----------------------------------------------------------------------- */
/*
* partiter.h
*
* Provides disk / partition iteration.
*/
#ifndef COM32_CHAIN_PARTITER_H
#define COM32_CHAIN_PARTITER_H
#include <stdint.h>
#include <syslinux/disk.h>
/* status */
enum {PI_ERRLOAD = -31, PI_INSANE, PI_OK = 0, PI_DONE};
/* flags */
enum {PIF_STEPALL = 1, PIF_PREFMBR = 2, PIF_STRICT = 4, PIF_STRICTER = 8, PIF_GPTHCRC = 16, PIF_GPTLCRC = 32};
struct itertype;
struct part_iter;
struct itertype {
void (*dtor)(struct part_iter *);
int (*next)(struct part_iter *);
};
#define PI_GPTLABSIZE ((int)sizeof(((struct disk_gpt_part_entry *)0)->name))
struct part_iter {
const struct itertype *type;
char *data;
char *record;
uint64_t abs_lba;
uint64_t length;
int index0; /* including holes, from -1 (disk, then parts from 0) */
int index; /* excluding holes, from 0 (disk, then parts from 1), -1 means hole, if PIF_STEPALL is set */
int flags; /* flags, see #defines above */
int status; /* current status, see enums above */
struct disk_info di;
union {
struct {
uint32_t disk_sig; /* 32bit disk signature as stored in MBR */
uint32_t bebr_lba; /* absolute lba of base extended partition */
uint32_t bebr_siz; /* size of base extended partition */
uint32_t cebr_lba; /* absolute lba of curr ext. partition */
uint32_t cebr_siz; /* size of curr ext. partition */
uint32_t nebr_lba; /* absolute lba of next ext. partition */
uint32_t nebr_siz; /* size of next ext. partition */
int bebr_index0; /* index of (0-3) of base ext. part., -1 if not present in MBR */
int logskipcnt; /* how many logical holes were skipped */
} dos;
struct {
struct guid disk_guid;
struct guid part_guid;
char part_label[PI_GPTLABSIZE/2+1];
int pe_count;
int pe_size;
uint64_t ufirst;
uint64_t ulast;
} gpt;
};
};
extern const struct itertype * const typedos;
extern const struct itertype * const typegpt;
extern const struct itertype * const typeraw;
struct part_iter *pi_begin(const struct disk_info *, int flags);
void pi_del(struct part_iter **);
/* inline virtuals */
static inline int pi_next(struct part_iter *iter)
{
return iter->type->next(iter);
}
static inline void pi_dtor(struct part_iter *iter)
{
iter->type->dtor(iter);
}
#endif
/* vim: set ts=8 sts=4 sw=4 noet: */
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