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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MTDUTILS_H_
#define MTDUTILS_H_
#include <sys/types.h> // for size_t, etc.
typedef struct MtdPartition MtdPartition;
int mtd_scan_partitions(void);
const MtdPartition *mtd_find_partition_by_name(const char *name);
/* mount_point is like "/system"
* filesystem is like "yaffs2"
*/
int mtd_mount_partition(const MtdPartition *partition, const char *mount_point,
const char *filesystem, int read_only);
/* get the partition and the minimum erase/write block size. NULL is ok.
*/
int mtd_partition_info(const MtdPartition *partition,
size_t *total_size, size_t *erase_size, size_t *write_size);
/* read or write raw data from a partition, starting at the beginning.
* skips bad blocks as best we can.
*/
typedef struct MtdReadContext MtdReadContext;
typedef struct MtdWriteContext MtdWriteContext;
MtdReadContext *mtd_read_partition(const MtdPartition *);
ssize_t mtd_read_data(MtdReadContext *, char *data, size_t data_len);
void mtd_read_close(MtdReadContext *);
void mtd_read_skip_to(const MtdReadContext *, size_t offset);
MtdWriteContext *mtd_write_partition(const MtdPartition *);
ssize_t mtd_write_data(MtdWriteContext *, const char *data, size_t data_len);
off_t mtd_erase_blocks(MtdWriteContext *, int blocks); /* 0 ok, -1 for all */
off_t mtd_find_write_start(MtdWriteContext *ctx, off_t pos);
int mtd_write_close(MtdWriteContext *);
struct MtdPartition {
int device_index;
unsigned int size;
unsigned int erase_size;
char *name;
};
#endif // MTDUTILS_H_
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