ref: dd9afaebb842141fa01d09a7296e91be5915cd26
dir: /include/ext4_trans.h/
/*
* Copyright (c) 2015 Grzegorz Kostka (kostka.grzegorz@gmail.com)
* Copyright (c) 2015 Kaho Ng (ngkaho1234@gmail.com)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup lwext4
* @{
*/
/**
* @file ext4_trans.h
* @brief Transaction handle functions
*/
#ifndef EXT4_TRANS_H
#define EXT4_TRANS_H
#ifdef __cplusplus
extern "C" {
#endif
#include <ext4_config.h>
#include <ext4_types.h>
/**@brief Mark a buffer dirty and add it to the current transaction.
* @param buf buffer
* @return standard error code*/
int ext4_trans_set_block_dirty(struct ext4_buf *buf);
/**@brief Block get function (through cache, don't read).
* jbd_trans_get_access would be called in order to
* get write access to the buffer.
* @param bdev block device descriptor
* @param b block descriptor
* @param lba logical block address
* @return standard error code*/
int ext4_trans_block_get_noread(struct ext4_blockdev *bdev,
struct ext4_block *b,
uint64_t lba);
/**@brief Block get function (through cache).
* jbd_trans_get_access would be called in order to
* get write access to the buffer.
* @param bdev block device descriptor
* @param b block descriptor
* @param lba logical block address
* @return standard error code*/
int ext4_trans_block_get(struct ext4_blockdev *bdev,
struct ext4_block *b,
uint64_t lba);
/**@brief Try to add block to be revoked to the current transaction.
* @param bdev block device descriptor
* @param lba logical block address
* @return standard error code*/
int ext4_trans_try_revoke_block(struct ext4_blockdev *bdev,
uint64_t lba);
#ifdef __cplusplus
}
#endif
#endif /* EXT4_TRANS_H */
/**
* @}
*/