2 * Copyright (c) 2013 Grzegorz Kostka (kostka.grzegorz@gmail.com)
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6 * Copyright (c) 2012 Martin Sucha
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7 * Copyright (c) 2012 Frantisek Princ
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8 * All rights reserved.
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10 * Redistribution and use in source and binary forms, with or without
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11 * modification, are permitted provided that the following conditions
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14 * - Redistributions of source code must retain the above copyright
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15 * notice, this list of conditions and the following disclaimer.
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16 * - Redistributions in binary form must reproduce the above copyright
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17 * notice, this list of conditions and the following disclaimer in the
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18 * documentation and/or other materials provided with the distribution.
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19 * - The name of the author may not be used to endorse or promote products
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20 * derived from this software without specific prior written permission.
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22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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34 /** @addtogroup lwext4
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38 * @file ext4_ialloc.c
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39 * @brief Inode allocation procedures.
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42 #ifndef EXT4_IALLOC_H_
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43 #define EXT4_IALLOC_H_
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49 #include <ext4_config.h>
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50 #include <ext4_types.h>
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52 /**@brief Free i-node number and modify filesystem data structers.
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53 * @param fs Filesystem, where the i-node is located
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54 * @param index Index of i-node to be release
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55 * @param is_dir Flag us for information whether i-node is directory or not
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57 int ext4_ialloc_free_inode(struct ext4_fs *fs, uint32_t index, bool is_dir);
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59 /**@brief I-node allocation algorithm.
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60 * This is more simple algorithm, than Orlov allocator used
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61 * in the Linux kernel.
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62 * @param fs Filesystem to allocate i-node on
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63 * @param index Output value - allocated i-node number
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64 * @param is_dir Flag if allocated i-node will be file or directory
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65 * @return Error code
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67 int ext4_ialloc_alloc_inode(struct ext4_fs *fs, uint32_t *index, bool is_dir);
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72 #endif /* EXT4_IALLOC_H_ */
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