/* * 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 __cplusplusextern "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 */ /** * @} */