ref: 2eb1882c69281f7a101aed4c62df1f707fea9a6e
dir: /include/ext4_trans.h/
/* * Copyright (c) 2015 Grzegorz Kostka ([email protected]) * Copyright (c) 2015 Kaho Ng ([email protected]) * * 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 */ /** * @} */