/* * Copyright (c) 2013 Grzegorz Kostka (kostka.grzegorz@gmail.com) * * * HelenOS: * Copyright (c) 2012 Martin Sucha * Copyright (c) 2012 Frantisek Princ * All rights reserved. * * 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_ialloc.c * @brief Inode allocation procedures. */ #ifndef EXT4_IALLOC_H_#define EXT4_IALLOC_H_ #ifdef __cplusplusextern "C" {#endif #include <ext4_config.h>#include <ext4_types.h> /**@brief Calculate and set checksum of inode bitmap. * @param sb superblock pointer. * @param bg block group * @param bitmap bitmap buffer */void ext4_ialloc_set_bitmap_csum(struct ext4_sblock *sb, struct ext4_bgroup *bg,				 void *bitmap); /**@brief Free i-node number and modify filesystem data structers. * @param fs     Filesystem, where the i-node is located * @param index  Index of i-node to be release * @param is_dir Flag us for information whether i-node is directory or not */int ext4_ialloc_free_inode(struct ext4_fs *fs, uint32_t index, bool is_dir); /**@brief I-node allocation algorithm. * This is more simple algorithm, than Orlov allocator used * in the Linux kernel. * @param fs     Filesystem to allocate i-node on * @param index  Output value - allocated i-node number * @param is_dir Flag if allocated i-node will be file or directory * @return Error code */int ext4_ialloc_alloc_inode(struct ext4_fs *fs, uint32_t *index, bool is_dir); #ifdef __cplusplus}#endif #endif /* EXT4_IALLOC_H_ */ /** * @} */