115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
/*
|
|
* Copyright (c) 2015, 2016 Jonas 'Sortie' Termansen.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* mount/ext2.h
|
|
* ext2 filesystem.
|
|
*/
|
|
|
|
#ifndef INCLUDE_MOUNT_EXT2_H
|
|
#define INCLUDE_MOUNT_EXT2_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <mount/filesystem.h>
|
|
|
|
#define EXT2_SUPER_MAGIC 0xEF53
|
|
#define EXT2_VALID_FS 1
|
|
#define EXT2_ERROR_FS 2
|
|
#define EXT2_FEATURE_COMPAT_DIR_PREALLOC (1U << 0U)
|
|
#define EXT2_FEATURE_COMPAT_IMAGIC_INODES (1U << 1U)
|
|
#define EXT3_FEATURE_COMPAT_HAS_JOURNAL (1U << 2U)
|
|
#define EXT2_FEATURE_COMPAT_EXT_ATTR (1U << 3U)
|
|
#define EXT2_FEATURE_COMPAT_RESIZE_INO (1U << 4U)
|
|
#define EXT2_FEATURE_COMPAT_DIR_INDEX (1U << 5U)
|
|
#define EXT2_FEATURE_INCOMPAT_COMPRESSION (1U << 0U)
|
|
#define EXT2_FEATURE_INCOMPAT_FILETYPE (1U << 1U)
|
|
#define EXT2_FEATURE_INCOMPAT_RECOVER (1U << 2U)
|
|
#define EXT2_FEATURE_INCOMPAT_JOURNAL_DEV (1U << 3U)
|
|
#define EXT2_FEATURE_INCOMPAT_META_BG (1U << 4U)
|
|
#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER (1U << 0U)
|
|
#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE (1U << 1U)
|
|
#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR (1U << 2U)
|
|
|
|
struct ext2_superblock
|
|
{
|
|
uint32_t s_inodes_count;
|
|
uint32_t s_blocks_count;
|
|
uint32_t s_r_blocks_count;
|
|
uint32_t s_free_blocks_count;
|
|
uint32_t s_free_inodes_count;
|
|
uint32_t s_first_data_block;
|
|
uint32_t s_log_block_size;
|
|
int32_t s_log_frag_size;
|
|
uint32_t s_blocks_per_group;
|
|
uint32_t s_frags_per_group;
|
|
uint32_t s_inodes_per_group;
|
|
uint32_t s_mtime;
|
|
uint32_t s_wtime;
|
|
uint16_t s_mnt_count;
|
|
uint16_t s_max_mnt_count;
|
|
uint16_t s_magic;
|
|
uint16_t s_state;
|
|
uint16_t s_errors;
|
|
uint16_t s_minor_rev_level;
|
|
uint32_t s_lastcheck;
|
|
uint32_t s_checkinterval;
|
|
uint32_t s_creator_os;
|
|
uint32_t s_rev_level;
|
|
uint16_t s_def_resuid;
|
|
uint16_t s_def_resgid;
|
|
// EXT2_DYNAMIC_REV
|
|
uint32_t s_first_ino;
|
|
uint16_t s_inode_size;
|
|
uint16_t s_block_group_nr;
|
|
uint32_t s_feature_compat;
|
|
uint32_t s_feature_incompat;
|
|
uint32_t s_feature_ro_compat;
|
|
uint8_t s_uuid[16];
|
|
/*uint8_t*/ char s_volume_name[16];
|
|
/*uint8_t*/ char s_last_mounted[64];
|
|
uint32_t s_algo_bitmap;
|
|
// Performance Hints
|
|
uint8_t s_prealloc_blocks;
|
|
uint8_t s_prealloc_dir_blocks;
|
|
uint16_t alignment0;
|
|
// Journaling Support
|
|
uint8_t s_journal_uuid[16];
|
|
uint32_t s_journal_inum;
|
|
uint32_t s_journal_dev;
|
|
uint32_t s_last_orphan;
|
|
// Directory Indexing Support
|
|
uint32_t s_hash_seed[4];
|
|
uint8_t s_def_hash_version;
|
|
uint8_t alignment1[3];
|
|
// Other options
|
|
uint32_t s_default_mount_options;
|
|
uint32_t s_first_meta_bg;
|
|
uint8_t alignment2[760];
|
|
};
|
|
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
extern const struct filesystem_handler ext2_handler;
|
|
|
|
void ext2_superblock_decode(struct ext2_superblock*);
|
|
|
|
#if defined(__cplusplus)
|
|
} /* extern "C" */
|
|
#endif
|
|
|
|
#endif
|