106 lines
2.8 KiB
C
106 lines
2.8 KiB
C
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2015.
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This file is part of Sortix libmount.
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Sortix libmount is free software: you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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Sortix libmount is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with Sortix libmount. If not, see <http://www.gnu.org/licenses/>.
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mount/ext2.h
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ext2 filesystem.
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*******************************************************************************/
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#ifndef INCLUDE_MOUNT_EXT2_H
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#define INCLUDE_MOUNT_EXT2_H
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#include <stdint.h>
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#include <mount/filesystem.h>
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static const uint16_t EXT2_SUPER_MAGIC = 0xEF53;
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static const uint16_t EXT2_VALID_FS = 1;
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static const uint16_t EXT2_ERROR_FS = 2;
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struct ext2_superblock
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{
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uint32_t s_inodes_count;
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uint32_t s_blocks_count;
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uint32_t s_r_blocks_count;
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uint32_t s_free_blocks_count;
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uint32_t s_free_inodes_count;
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uint32_t s_first_data_block;
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uint32_t s_log_block_size;
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int32_t s_log_frag_size;
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uint32_t s_blocks_per_group;
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uint32_t s_frags_per_group;
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uint32_t s_inodes_per_group;
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uint32_t s_mtime;
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uint32_t s_wtime;
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uint16_t s_mnt_count;
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uint16_t s_max_mnt_count;
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uint16_t s_magic;
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uint16_t s_state;
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uint16_t s_errors;
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uint16_t s_minor_rev_level;
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uint32_t s_lastcheck;
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uint32_t s_checkinterval;
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uint32_t s_creator_os;
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uint32_t s_rev_level;
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uint16_t s_def_resuid;
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uint16_t s_def_resgid;
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// EXT2_DYNAMIC_REV
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uint32_t s_first_ino;
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uint16_t s_inode_size;
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uint16_t s_block_group_nr;
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uint32_t s_feature_compat;
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uint32_t s_feature_incompat;
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uint32_t s_feature_ro_compat;
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uint8_t s_uuid[16];
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/*uint8_t*/ char s_volume_name[16];
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/*uint8_t*/ char s_last_mounted[64];
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uint32_t s_algo_bitmap;
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// Performance Hints
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uint8_t s_prealloc_blocks;
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uint8_t s_prealloc_dir_blocks;
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uint16_t alignment0;
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// Journaling Support
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uint8_t s_journal_uuid[16];
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uint32_t s_journal_inum;
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uint32_t s_journal_dev;
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uint32_t s_last_orphan;
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// Directory Indexing Support
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uint32_t s_hash_seed[4];
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uint8_t s_def_hash_version;
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uint8_t alignment1[3];
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// Other options
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uint32_t s_default_mount_options;
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uint32_t s_first_meta_bg;
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uint8_t alignment2[760];
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};
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#if defined(__cplusplus)
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extern "C" {
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#endif
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extern const struct filesystem_handler ext2_handler;
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void ext2_superblock_decode(struct ext2_superblock*);
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#if defined(__cplusplus)
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} /* extern "C" */
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#endif
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#endif
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