| 1 | /*
|
|---|
| 2 | * Copyright (c) 2011 Frantisek Princ
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | /** @addtogroup libext4
|
|---|
| 30 | * @{
|
|---|
| 31 | */
|
|---|
| 32 |
|
|---|
| 33 | #ifndef LIBEXT4_LIBEXT4_FILESYSTEM_H_
|
|---|
| 34 | #define LIBEXT4_LIBEXT4_FILESYSTEM_H_
|
|---|
| 35 |
|
|---|
| 36 | #include <libblock.h>
|
|---|
| 37 | #include "libext4_block_group.h"
|
|---|
| 38 | #include "libext4_inode.h"
|
|---|
| 39 | #include "libext4_superblock.h"
|
|---|
| 40 |
|
|---|
| 41 | typedef struct ext4_filesystem {
|
|---|
| 42 | service_id_t device;
|
|---|
| 43 | ext4_superblock_t * superblock;
|
|---|
| 44 | } ext4_filesystem_t;
|
|---|
| 45 |
|
|---|
| 46 | #define EXT4_MAX_BLOCK_SIZE 65536 //64 KiB
|
|---|
| 47 | #define EXT4_REV0_INODE_SIZE 128
|
|---|
| 48 |
|
|---|
| 49 | /* Compatible features */
|
|---|
| 50 | // TODO features comments !!!
|
|---|
| 51 | #define EXT4_FEATURE_COMPAT_DIR_PREALLOC 0x0001
|
|---|
| 52 | #define EXT4_FEATURE_COMPAT_IMAGIC_INODES 0x0002
|
|---|
| 53 | #define EXT4_FEATURE_COMPAT_HAS_JOURNAL 0x0004
|
|---|
| 54 | #define EXT4_FEATURE_COMPAT_EXT_ATTR 0x0008
|
|---|
| 55 | #define EXT4_FEATURE_COMPAT_RESIZE_INODE 0x0010
|
|---|
| 56 | #define EXT4_FEATURE_COMPAT_DIR_INDEX 0x0020
|
|---|
| 57 |
|
|---|
| 58 | /* Read-only compatible features */
|
|---|
| 59 | // TODO features comments !!!
|
|---|
| 60 | #define EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
|
|---|
| 61 | #define EXT4_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
|
|---|
| 62 | #define EXT4_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
|
|---|
| 63 | #define EXT4_FEATURE_RO_COMPAT_HUGE_FILE 0x0008
|
|---|
| 64 | #define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010
|
|---|
| 65 | #define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020
|
|---|
| 66 | #define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040
|
|---|
| 67 |
|
|---|
| 68 | /* Incompatible features */
|
|---|
| 69 | // TODO features comments !!!
|
|---|
| 70 | #define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001
|
|---|
| 71 | #define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002
|
|---|
| 72 | #define EXT4_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */
|
|---|
| 73 | #define EXT4_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */
|
|---|
| 74 | #define EXT4_FEATURE_INCOMPAT_META_BG 0x0010
|
|---|
| 75 | #define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040 /* extents support */
|
|---|
| 76 | #define EXT4_FEATURE_INCOMPAT_64BIT 0x0080
|
|---|
| 77 | #define EXT4_FEATURE_INCOMPAT_MMP 0x0100
|
|---|
| 78 | #define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200
|
|---|
| 79 | #define EXT4_FEATURE_INCOMPAT_EA_INODE 0x0400 /* EA in inode */
|
|---|
| 80 | #define EXT4_FEATURE_INCOMPAT_DIRDATA 0x1000 /* data in dirent */
|
|---|
| 81 |
|
|---|
| 82 |
|
|---|
| 83 | // TODO MODIFY features corresponding with implementation
|
|---|
| 84 | #define EXT4_FEATURE_COMPAT_SUPP EXT4_FEATURE_COMPAT_EXT_ATTR
|
|---|
| 85 |
|
|---|
| 86 | #define EXT4_FEATURE_INCOMPAT_SUPP (EXT4_FEATURE_INCOMPAT_FILETYPE| \
|
|---|
| 87 | EXT4_FEATURE_INCOMPAT_RECOVER| \
|
|---|
| 88 | EXT4_FEATURE_INCOMPAT_META_BG| \
|
|---|
| 89 | EXT4_FEATURE_INCOMPAT_EXTENTS| \
|
|---|
| 90 | EXT4_FEATURE_INCOMPAT_64BIT| \
|
|---|
| 91 | EXT4_FEATURE_INCOMPAT_FLEX_BG)
|
|---|
| 92 |
|
|---|
| 93 | #define EXT4_FEATURE_RO_COMPAT_SUPP (EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER| \
|
|---|
| 94 | EXT4_FEATURE_RO_COMPAT_LARGE_FILE| \
|
|---|
| 95 | EXT4_FEATURE_RO_COMPAT_GDT_CSUM| \
|
|---|
| 96 | EXT4_FEATURE_RO_COMPAT_DIR_NLINK | \
|
|---|
| 97 | EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE | \
|
|---|
| 98 | EXT4_FEATURE_RO_COMPAT_BTREE_DIR |\
|
|---|
| 99 | EXT4_FEATURE_RO_COMPAT_HUGE_FILE)
|
|---|
| 100 |
|
|---|
| 101 |
|
|---|
| 102 | extern int ext4_filesystem_init(ext4_filesystem_t *, service_id_t);
|
|---|
| 103 | extern void ext4_filesystem_fini(ext4_filesystem_t *fs);
|
|---|
| 104 | extern int ext4_filesystem_check_sanity(ext4_filesystem_t *fs);
|
|---|
| 105 | extern int ext4_filesystem_check_features(ext4_filesystem_t *, bool *);
|
|---|
| 106 | extern int ext4_filesystem_get_block_group_ref(ext4_filesystem_t *, uint32_t,
|
|---|
| 107 | ext4_block_group_ref_t **);
|
|---|
| 108 | extern int ext4_filesystem_get_inode_ref(ext4_filesystem_t *, uint32_t,
|
|---|
| 109 | ext4_inode_ref_t **);
|
|---|
| 110 |
|
|---|
| 111 |
|
|---|
| 112 | #endif
|
|---|
| 113 |
|
|---|
| 114 | /**
|
|---|
| 115 | * @}
|
|---|
| 116 | */
|
|---|
