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@@ -1,1441 +0,0 @@
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---- a/e2fsprogs/e2fs_defs.h
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-+++ /dev/null
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-@@ -1,561 +0,0 @@
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--/* vi: set sw=4 ts=4: */
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--/*
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-- * linux/include/linux/ext2_fs.h
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-- *
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-- * Copyright (C) 1992, 1993, 1994, 1995
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-- * Remy Card ([email protected])
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-- * Laboratoire MASI - Institut Blaise Pascal
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-- * Universite Pierre et Marie Curie (Paris VI)
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-- *
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-- * Copyright (C) 1991, 1992 Linus Torvalds
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-- */
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--
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--#ifndef LINUX_EXT2_FS_H
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--#define LINUX_EXT2_FS_H 1
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--
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--/*
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-- * Special inode numbers
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-- */
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--#define EXT2_BAD_INO 1 /* Bad blocks inode */
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--#define EXT2_ROOT_INO 2 /* Root inode */
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--#define EXT2_ACL_IDX_INO 3 /* ACL inode */
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--#define EXT2_ACL_DATA_INO 4 /* ACL inode */
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--#define EXT2_BOOT_LOADER_INO 5 /* Boot loader inode */
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--#define EXT2_UNDEL_DIR_INO 6 /* Undelete directory inode */
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--#define EXT2_RESIZE_INO 7 /* Reserved group descriptors inode */
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--#define EXT2_JOURNAL_INO 8 /* Journal inode */
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--
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--/* First non-reserved inode for old ext2 filesystems */
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--#define EXT2_GOOD_OLD_FIRST_INO 11
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--
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--/*
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-- * The second extended file system magic number
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-- */
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--#define EXT2_SUPER_MAGIC 0xEF53
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--
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--/* Assume that user mode programs are passing in an ext2fs superblock, not
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-- * a kernel struct super_block. This will allow us to call the feature-test
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-- * macros from user land. */
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--#define EXT2_SB(sb) (sb)
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--
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--/*
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-- * Maximal count of links to a file
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-- */
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--#define EXT2_LINK_MAX 32000
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--
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--/*
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-- * Macro-instructions used to manage several block sizes
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-- */
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--#define EXT2_MIN_BLOCK_LOG_SIZE 10 /* 1024 */
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--#define EXT2_MAX_BLOCK_LOG_SIZE 16 /* 65536 */
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--#define EXT2_MIN_BLOCK_SIZE (1 << EXT2_MIN_BLOCK_LOG_SIZE)
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--#define EXT2_MAX_BLOCK_SIZE (1 << EXT2_MAX_BLOCK_LOG_SIZE)
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--#define EXT2_BLOCK_SIZE(s) (EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size)
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--#define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
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--#define EXT2_INODE_SIZE(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
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-- EXT2_GOOD_OLD_INODE_SIZE : (s)->s_inode_size)
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--#define EXT2_FIRST_INO(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
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-- EXT2_GOOD_OLD_FIRST_INO : (s)->s_first_ino)
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--#define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof(uint32_t))
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--
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--/*
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-- * Macro-instructions used to manage fragments
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-- */
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--#define EXT2_MIN_FRAG_SIZE EXT2_MIN_BLOCK_SIZE
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--#define EXT2_MAX_FRAG_SIZE EXT2_MAX_BLOCK_SIZE
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--#define EXT2_MIN_FRAG_LOG_SIZE EXT2_MIN_BLOCK_LOG_SIZE
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--#define EXT2_FRAG_SIZE(s) (EXT2_MIN_FRAG_SIZE << (s)->s_log_frag_size)
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--#define EXT2_FRAGS_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / EXT2_FRAG_SIZE(s))
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--
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--/*
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-- * ACL structures
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-- */
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--struct ext2_acl_header { /* Header of Access Control Lists */
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-- uint32_t aclh_size;
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-- uint32_t aclh_file_count;
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-- uint32_t aclh_acle_count;
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-- uint32_t aclh_first_acle;
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--};
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--
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--struct ext2_acl_entry { /* Access Control List Entry */
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-- uint32_t acle_size;
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-- uint16_t acle_perms; /* Access permissions */
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-- uint16_t acle_type; /* Type of entry */
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-- uint16_t acle_tag; /* User or group identity */
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-- uint16_t acle_pad1;
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-- uint32_t acle_next; /* Pointer on next entry for the */
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-- /* same inode or on next free entry */
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--};
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--
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--/*
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-- * Structure of a blocks group descriptor
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-- */
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--struct ext2_group_desc {
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-- uint32_t bg_block_bitmap; /* Blocks bitmap block */
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-- uint32_t bg_inode_bitmap; /* Inodes bitmap block */
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-- uint32_t bg_inode_table; /* Inodes table block */
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-- uint16_t bg_free_blocks_count; /* Free blocks count */
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-- uint16_t bg_free_inodes_count; /* Free inodes count */
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-- uint16_t bg_used_dirs_count; /* Directories count */
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-- uint16_t bg_pad;
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-- uint32_t bg_reserved[3];
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--};
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--
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--/*
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-- * Data structures used by the directory indexing feature
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-- *
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-- * Note: all of the multibyte integer fields are little endian.
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-- */
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--
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--/*
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-- * Note: dx_root_info is laid out so that if it should somehow get
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-- * overlaid by a dirent the two low bits of the hash version will be
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-- * zero. Therefore, the hash version mod 4 should never be 0.
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-- * Sincerely, the paranoia department.
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-- */
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--struct ext2_dx_root_info {
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-- uint32_t reserved_zero;
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-- uint8_t hash_version; /* 0 now, 1 at release */
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-- uint8_t info_length; /* 8 */
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-- uint8_t indirect_levels;
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-- uint8_t unused_flags;
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--};
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--
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--#define EXT2_HASH_LEGACY 0
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--#define EXT2_HASH_HALF_MD4 1
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--#define EXT2_HASH_TEA 2
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--
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--#define EXT2_HASH_FLAG_INCOMPAT 0x1
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--
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--struct ext2_dx_entry {
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-- uint32_t hash;
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-- uint32_t block;
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--};
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--
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--struct ext2_dx_countlimit {
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-- uint16_t limit;
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-- uint16_t count;
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--};
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--
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--
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--/*
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-- * Macro-instructions used to manage group descriptors
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-- */
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--#define EXT2_BLOCKS_PER_GROUP(s) (EXT2_SB(s)->s_blocks_per_group)
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--#define EXT2_INODES_PER_GROUP(s) (EXT2_SB(s)->s_inodes_per_group)
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--#define EXT2_INODES_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s)/EXT2_INODE_SIZE(s))
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--/* limits imposed by 16-bit value gd_free_{blocks,inode}_count */
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--#define EXT2_MAX_BLOCKS_PER_GROUP(s) ((1 << 16) - 8)
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--#define EXT2_MAX_INODES_PER_GROUP(s) ((1 << 16) - EXT2_INODES_PER_BLOCK(s))
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--#define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
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--
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--/*
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-- * Constants relative to the data blocks
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-- */
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--#define EXT2_NDIR_BLOCKS 12
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--#define EXT2_IND_BLOCK EXT2_NDIR_BLOCKS
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--#define EXT2_DIND_BLOCK (EXT2_IND_BLOCK + 1)
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--#define EXT2_TIND_BLOCK (EXT2_DIND_BLOCK + 1)
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--#define EXT2_N_BLOCKS (EXT2_TIND_BLOCK + 1)
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--
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--/*
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-- * Inode flags
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-- */
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--#define EXT2_SECRM_FL 0x00000001 /* Secure deletion */
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--#define EXT2_UNRM_FL 0x00000002 /* Undelete */
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--#define EXT2_COMPR_FL 0x00000004 /* Compress file */
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--#define EXT2_SYNC_FL 0x00000008 /* Synchronous updates */
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--#define EXT2_IMMUTABLE_FL 0x00000010 /* Immutable file */
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--#define EXT2_APPEND_FL 0x00000020 /* writes to file may only append */
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--#define EXT2_NODUMP_FL 0x00000040 /* do not dump file */
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--#define EXT2_NOATIME_FL 0x00000080 /* do not update atime */
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--/* Reserved for compression usage... */
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--#define EXT2_DIRTY_FL 0x00000100
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--#define EXT2_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
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--#define EXT2_NOCOMPR_FL 0x00000400 /* Access raw compressed data */
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--#define EXT2_ECOMPR_FL 0x00000800 /* Compression error */
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--/* End compression flags --- maybe not all used */
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--#define EXT2_BTREE_FL 0x00001000 /* btree format dir */
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--#define EXT2_INDEX_FL 0x00001000 /* hash-indexed directory */
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--#define EXT2_IMAGIC_FL 0x00002000
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--#define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */
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--#define EXT2_NOTAIL_FL 0x00008000 /* file tail should not be merged */
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--#define EXT2_DIRSYNC_FL 0x00010000 /* Synchronous directory modifications */
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--#define EXT2_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
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--#define EXT3_EXTENTS_FL 0x00080000 /* Inode uses extents */
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--#define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
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--
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--#define EXT2_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
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--#define EXT2_FL_USER_MODIFIABLE 0x000080FF /* User modifiable flags */
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--
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--/*
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-- * ioctl commands
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-- */
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--#define EXT2_IOC_GETFLAGS _IOR('f', 1, long)
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--#define EXT2_IOC_SETFLAGS _IOW('f', 2, long)
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--#define EXT2_IOC_GETVERSION _IOR('v', 1, long)
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--#define EXT2_IOC_SETVERSION _IOW('v', 2, long)
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--
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--/*
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-- * Structure of an inode on the disk
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-- */
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--struct ext2_inode {
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-- uint16_t i_mode; /* File mode */
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-- uint16_t i_uid; /* Low 16 bits of Owner Uid */
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-- uint32_t i_size; /* Size in bytes */
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-- uint32_t i_atime; /* Access time */
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-- uint32_t i_ctime; /* Creation time */
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-- uint32_t i_mtime; /* Modification time */
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-- uint32_t i_dtime; /* Deletion Time */
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-- uint16_t i_gid; /* Low 16 bits of Group Id */
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-- uint16_t i_links_count; /* Links count */
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-- uint32_t i_blocks; /* Blocks count */
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-- uint32_t i_flags; /* File flags */
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-- union {
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-- struct {
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-- uint32_t l_i_reserved1;
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-- } linux1;
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-- struct {
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-- uint32_t h_i_translator;
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-- } hurd1;
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-- struct {
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-- uint32_t m_i_reserved1;
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-- } masix1;
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-- } osd1; /* OS dependent 1 */
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-- uint32_t i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
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-- uint32_t i_generation; /* File version (for NFS) */
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-- uint32_t i_file_acl; /* File ACL */
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-- uint32_t i_dir_acl; /* Directory ACL */
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-- uint32_t i_faddr; /* Fragment address */
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-- union {
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-- struct {
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-- uint8_t l_i_frag; /* Fragment number */
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-- uint8_t l_i_fsize; /* Fragment size */
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-- uint16_t i_pad1;
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-- uint16_t l_i_uid_high; /* these 2 fields */
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-- uint16_t l_i_gid_high; /* were reserved2[0] */
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-- uint32_t l_i_reserved2;
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-- } linux2;
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-- struct {
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-- uint8_t h_i_frag; /* Fragment number */
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-- uint8_t h_i_fsize; /* Fragment size */
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-- uint16_t h_i_mode_high;
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-- uint16_t h_i_uid_high;
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-- uint16_t h_i_gid_high;
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-- uint32_t h_i_author;
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-- } hurd2;
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-- struct {
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-- uint8_t m_i_frag; /* Fragment number */
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-- uint8_t m_i_fsize; /* Fragment size */
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-- uint16_t m_pad1;
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-- uint32_t m_i_reserved2[2];
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-- } masix2;
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-- } osd2; /* OS dependent 2 */
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--};
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--
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--/*
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-- * Permanent part of an large inode on the disk
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-- */
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--struct ext2_inode_large {
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-- uint16_t i_mode; /* File mode */
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-- uint16_t i_uid; /* Low 16 bits of Owner Uid */
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-- uint32_t i_size; /* Size in bytes */
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-- uint32_t i_atime; /* Access time */
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-- uint32_t i_ctime; /* Creation time */
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-- uint32_t i_mtime; /* Modification time */
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-- uint32_t i_dtime; /* Deletion Time */
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-- uint16_t i_gid; /* Low 16 bits of Group Id */
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-- uint16_t i_links_count; /* Links count */
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-- uint32_t i_blocks; /* Blocks count */
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-- uint32_t i_flags; /* File flags */
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-- union {
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-- struct {
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-- uint32_t l_i_reserved1;
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-- } linux1;
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-- struct {
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-- uint32_t h_i_translator;
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-- } hurd1;
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-- struct {
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-- uint32_t m_i_reserved1;
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-- } masix1;
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-- } osd1; /* OS dependent 1 */
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-- uint32_t i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
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-- uint32_t i_generation; /* File version (for NFS) */
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-- uint32_t i_file_acl; /* File ACL */
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-- uint32_t i_dir_acl; /* Directory ACL */
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-- uint32_t i_faddr; /* Fragment address */
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-- union {
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-- struct {
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-- uint8_t l_i_frag; /* Fragment number */
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-- uint8_t l_i_fsize; /* Fragment size */
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-- uint16_t i_pad1;
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-- uint16_t l_i_uid_high; /* these 2 fields */
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-- uint16_t l_i_gid_high; /* were reserved2[0] */
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-- uint32_t l_i_reserved2;
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-- } linux2;
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-- struct {
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-- uint8_t h_i_frag; /* Fragment number */
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-- uint8_t h_i_fsize; /* Fragment size */
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-- uint16_t h_i_mode_high;
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-- uint16_t h_i_uid_high;
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-- uint16_t h_i_gid_high;
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-- uint32_t h_i_author;
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-- } hurd2;
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-- struct {
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-- uint8_t m_i_frag; /* Fragment number */
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-- uint8_t m_i_fsize; /* Fragment size */
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-- uint16_t m_pad1;
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-- uint32_t m_i_reserved2[2];
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-- } masix2;
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-- } osd2; /* OS dependent 2 */
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-- uint16_t i_extra_isize;
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-- uint16_t i_pad1;
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--};
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--
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--#define i_size_high i_dir_acl
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--
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--/*
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-- * File system states
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-- */
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--#define EXT2_VALID_FS 0x0001 /* Unmounted cleanly */
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--#define EXT2_ERROR_FS 0x0002 /* Errors detected */
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--
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--/*
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-- * Mount flags
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-- */
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--#define EXT2_MOUNT_CHECK 0x0001 /* Do mount-time checks */
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--#define EXT2_MOUNT_GRPID 0x0004 /* Create files with directory's group */
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--#define EXT2_MOUNT_DEBUG 0x0008 /* Some debugging messages */
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--#define EXT2_MOUNT_ERRORS_CONT 0x0010 /* Continue on errors */
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--#define EXT2_MOUNT_ERRORS_RO 0x0020 /* Remount fs ro on errors */
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--#define EXT2_MOUNT_ERRORS_PANIC 0x0040 /* Panic on errors */
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--#define EXT2_MOUNT_MINIX_DF 0x0080 /* Mimics the Minix statfs */
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--#define EXT2_MOUNT_NO_UID32 0x0200 /* Disable 32-bit UIDs */
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--
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--#define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt
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--#define set_opt(o, opt) o |= EXT2_MOUNT_##opt
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--#define test_opt(sb, opt) (EXT2_SB(sb)->s_mount_opt & \
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-- EXT2_MOUNT_##opt)
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--/*
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-- * Maximal mount counts between two filesystem checks
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-- */
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--#define EXT2_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */
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--#define EXT2_DFL_CHECKINTERVAL 0 /* Don't use interval check */
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--
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--/*
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-- * Behaviour when detecting errors
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-- */
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--#define EXT2_ERRORS_CONTINUE 1 /* Continue execution */
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--#define EXT2_ERRORS_RO 2 /* Remount fs read-only */
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--#define EXT2_ERRORS_PANIC 3 /* Panic */
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--#define EXT2_ERRORS_DEFAULT EXT2_ERRORS_CONTINUE
|
|
|
--
|
|
|
--/*
|
|
|
-- * Structure of the super block
|
|
|
-- */
|
|
|
--struct ext2_super_block {
|
|
|
-- uint32_t s_inodes_count; /* Inodes count */
|
|
|
-- uint32_t s_blocks_count; /* Blocks count */
|
|
|
-- uint32_t s_r_blocks_count; /* Reserved blocks count */
|
|
|
-- uint32_t s_free_blocks_count; /* Free blocks count */
|
|
|
-- uint32_t s_free_inodes_count; /* Free inodes count */
|
|
|
-- uint32_t s_first_data_block; /* First Data Block */
|
|
|
-- uint32_t s_log_block_size; /* Block size */
|
|
|
-- int32_t s_log_frag_size; /* Fragment size */
|
|
|
-- uint32_t s_blocks_per_group; /* # Blocks per group */
|
|
|
-- uint32_t s_frags_per_group; /* # Fragments per group */
|
|
|
-- uint32_t s_inodes_per_group; /* # Inodes per group */
|
|
|
-- uint32_t s_mtime; /* Mount time */
|
|
|
-- uint32_t s_wtime; /* Write time */
|
|
|
-- uint16_t s_mnt_count; /* Mount count */
|
|
|
-- int16_t s_max_mnt_count; /* Maximal mount count */
|
|
|
-- uint16_t s_magic; /* Magic signature */
|
|
|
-- uint16_t s_state; /* File system state */
|
|
|
-- uint16_t s_errors; /* Behaviour when detecting errors */
|
|
|
-- uint16_t s_minor_rev_level; /* minor revision level */
|
|
|
-- uint32_t s_lastcheck; /* time of last check */
|
|
|
-- uint32_t s_checkinterval; /* max. time between checks */
|
|
|
-- uint32_t s_creator_os; /* OS */
|
|
|
-- uint32_t s_rev_level; /* Revision level */
|
|
|
-- uint16_t s_def_resuid; /* Default uid for reserved blocks */
|
|
|
-- uint16_t s_def_resgid; /* Default gid for reserved blocks */
|
|
|
-- /*
|
|
|
-- * These fields are for EXT2_DYNAMIC_REV superblocks only.
|
|
|
-- *
|
|
|
-- * Note: the difference between the compatible feature set and
|
|
|
-- * the incompatible feature set is that if there is a bit set
|
|
|
-- * in the incompatible feature set that the kernel doesn't
|
|
|
-- * know about, it should refuse to mount the filesystem.
|
|
|
-- *
|
|
|
-- * e2fsck's requirements are more strict; if it doesn't know
|
|
|
-- * about a feature in either the compatible or incompatible
|
|
|
-- * feature set, it must abort and not try to meddle with
|
|
|
-- * things it doesn't understand...
|
|
|
-- */
|
|
|
-- uint32_t s_first_ino; /* First non-reserved inode */
|
|
|
-- uint16_t s_inode_size; /* size of inode structure */
|
|
|
-- uint16_t s_block_group_nr; /* block group # of this superblock */
|
|
|
-- uint32_t s_feature_compat; /* compatible feature set */
|
|
|
-- uint32_t s_feature_incompat; /* incompatible feature set */
|
|
|
-- uint32_t s_feature_ro_compat; /* readonly-compatible feature set */
|
|
|
-- uint8_t s_uuid[16]; /* 128-bit uuid for volume */
|
|
|
-- char s_volume_name[16]; /* volume name */
|
|
|
-- char s_last_mounted[64]; /* directory where last mounted */
|
|
|
-- uint32_t s_algorithm_usage_bitmap; /* For compression */
|
|
|
-- /*
|
|
|
-- * Performance hints. Directory preallocation should only
|
|
|
-- * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on.
|
|
|
-- */
|
|
|
-- uint8_t s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
|
|
|
-- uint8_t s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
|
|
|
-- uint16_t s_reserved_gdt_blocks; /* Per group table for online growth */
|
|
|
-- /*
|
|
|
-- * Journaling support valid if EXT2_FEATURE_COMPAT_HAS_JOURNAL set.
|
|
|
-- */
|
|
|
-- uint8_t s_journal_uuid[16]; /* uuid of journal superblock */
|
|
|
-- uint32_t s_journal_inum; /* inode number of journal file */
|
|
|
-- uint32_t s_journal_dev; /* device number of journal file */
|
|
|
-- uint32_t s_last_orphan; /* start of list of inodes to delete */
|
|
|
-- uint32_t s_hash_seed[4]; /* HTREE hash seed */
|
|
|
-- uint8_t s_def_hash_version; /* Default hash version to use */
|
|
|
-- uint8_t s_jnl_backup_type; /* Default type of journal backup */
|
|
|
-- uint16_t s_reserved_word_pad;
|
|
|
-- uint32_t s_default_mount_opts;
|
|
|
-- uint32_t s_first_meta_bg; /* First metablock group */
|
|
|
-- uint32_t s_mkfs_time; /* When the filesystem was created */
|
|
|
-- uint32_t s_jnl_blocks[17]; /* Backup of the journal inode */
|
|
|
-- uint32_t s_reserved[172]; /* Padding to the end of the block */
|
|
|
--};
|
|
|
--
|
|
|
--/*
|
|
|
-- * Codes for operating systems
|
|
|
-- */
|
|
|
--#define EXT2_OS_LINUX 0
|
|
|
--#define EXT2_OS_HURD 1
|
|
|
--#define EXT2_OS_MASIX 2
|
|
|
--#define EXT2_OS_FREEBSD 3
|
|
|
--#define EXT2_OS_LITES 4
|
|
|
--
|
|
|
--/*
|
|
|
-- * Revision levels
|
|
|
-- */
|
|
|
--#define EXT2_GOOD_OLD_REV 0 /* The good old (original) format */
|
|
|
--#define EXT2_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */
|
|
|
--
|
|
|
--#define EXT2_CURRENT_REV EXT2_GOOD_OLD_REV
|
|
|
--#define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV
|
|
|
--
|
|
|
--#define EXT2_GOOD_OLD_INODE_SIZE 128
|
|
|
--
|
|
|
--/*
|
|
|
-- * Journal inode backup types
|
|
|
-- */
|
|
|
--#define EXT3_JNL_BACKUP_BLOCKS 1
|
|
|
--
|
|
|
--/*
|
|
|
-- * Feature set definitions
|
|
|
-- */
|
|
|
--
|
|
|
--#define EXT2_HAS_COMPAT_FEATURE(sb,mask) \
|
|
|
-- ( EXT2_SB(sb)->s_feature_compat & (mask) )
|
|
|
--#define EXT2_HAS_RO_COMPAT_FEATURE(sb,mask) \
|
|
|
-- ( EXT2_SB(sb)->s_feature_ro_compat & (mask) )
|
|
|
--#define EXT2_HAS_INCOMPAT_FEATURE(sb,mask) \
|
|
|
-- ( EXT2_SB(sb)->s_feature_incompat & (mask) )
|
|
|
--
|
|
|
--#define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001
|
|
|
--#define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002
|
|
|
--#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
|
|
|
--#define EXT2_FEATURE_COMPAT_EXT_ATTR 0x0008
|
|
|
--#define EXT2_FEATURE_COMPAT_RESIZE_INODE 0x0010
|
|
|
--#define EXT2_FEATURE_COMPAT_DIR_INDEX 0x0020
|
|
|
--
|
|
|
--#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
|
|
|
--#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
|
|
|
--/* #define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 not used */
|
|
|
--
|
|
|
--#define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001
|
|
|
--#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
|
|
|
--#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */
|
|
|
--#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */
|
|
|
--#define EXT2_FEATURE_INCOMPAT_META_BG 0x0010
|
|
|
--#define EXT3_FEATURE_INCOMPAT_EXTENTS 0x0040
|
|
|
--
|
|
|
--
|
|
|
--#define EXT2_FEATURE_COMPAT_SUPP 0
|
|
|
--#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE)
|
|
|
--#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
|
|
|
-- EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
|
|
|
-- EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
|
|
|
--
|
|
|
--/*
|
|
|
-- * Default values for user and/or group using reserved blocks
|
|
|
-- */
|
|
|
--#define EXT2_DEF_RESUID 0
|
|
|
--#define EXT2_DEF_RESGID 0
|
|
|
--
|
|
|
--/*
|
|
|
-- * Default mount options
|
|
|
-- */
|
|
|
--#define EXT2_DEFM_DEBUG 0x0001
|
|
|
--#define EXT2_DEFM_BSDGROUPS 0x0002
|
|
|
--#define EXT2_DEFM_XATTR_USER 0x0004
|
|
|
--#define EXT2_DEFM_ACL 0x0008
|
|
|
--#define EXT2_DEFM_UID16 0x0010
|
|
|
--#define EXT3_DEFM_JMODE 0x0060
|
|
|
--#define EXT3_DEFM_JMODE_DATA 0x0020
|
|
|
--#define EXT3_DEFM_JMODE_ORDERED 0x0040
|
|
|
--#define EXT3_DEFM_JMODE_WBACK 0x0060
|
|
|
--
|
|
|
--/*
|
|
|
-- * Structure of a directory entry
|
|
|
-- */
|
|
|
--#define EXT2_NAME_LEN 255
|
|
|
--
|
|
|
--struct ext2_dir_entry {
|
|
|
-- uint32_t inode; /* Inode number */
|
|
|
-- uint16_t rec_len; /* Directory entry length */
|
|
|
-- uint16_t name_len; /* Name length */
|
|
|
-- char name[EXT2_NAME_LEN]; /* File name */
|
|
|
--};
|
|
|
--
|
|
|
--/*
|
|
|
-- * The new version of the directory entry. Since EXT2 structures are
|
|
|
-- * stored in intel byte order, and the name_len field could never be
|
|
|
-- * bigger than 255 chars, it's safe to reclaim the extra byte for the
|
|
|
-- * file_type field.
|
|
|
-- */
|
|
|
--struct ext2_dir_entry_2 {
|
|
|
-- uint32_t inode; /* Inode number */
|
|
|
-- uint16_t rec_len; /* Directory entry length */
|
|
|
-- uint8_t name_len; /* Name length */
|
|
|
-- uint8_t file_type;
|
|
|
-- char name[EXT2_NAME_LEN]; /* File name */
|
|
|
--};
|
|
|
--
|
|
|
--/*
|
|
|
-- * Ext2 directory file types. Only the low 3 bits are used. The
|
|
|
-- * other bits are reserved for now.
|
|
|
-- */
|
|
|
--#define EXT2_FT_UNKNOWN 0
|
|
|
--#define EXT2_FT_REG_FILE 1
|
|
|
--#define EXT2_FT_DIR 2
|
|
|
--#define EXT2_FT_CHRDEV 3
|
|
|
--#define EXT2_FT_BLKDEV 4
|
|
|
--#define EXT2_FT_FIFO 5
|
|
|
--#define EXT2_FT_SOCK 6
|
|
|
--#define EXT2_FT_SYMLINK 7
|
|
|
--
|
|
|
--#define EXT2_FT_MAX 8
|
|
|
--
|
|
|
--/*
|
|
|
-- * EXT2_DIR_PAD defines the directory entries boundaries
|
|
|
-- *
|
|
|
-- * NOTE: It must be a multiple of 4
|
|
|
-- */
|
|
|
--#define EXT2_DIR_PAD 4
|
|
|
--#define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
|
|
|
--#define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
|
|
|
-- ~EXT2_DIR_ROUND)
|
|
|
--
|
|
|
--#endif
|
|
|
---- a/e2fsprogs/e2fs_lib.h
|
|
|
-+++ b/e2fsprogs/e2fs_lib.h
|
|
|
-@@ -7,7 +7,7 @@
|
|
|
- */
|
|
|
-
|
|
|
- /* Constants and structures */
|
|
|
--#include "e2fs_defs.h"
|
|
|
-+#include "bb_e2fs_defs.h"
|
|
|
-
|
|
|
- PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
|
|
|
-
|
|
|
---- a/e2fsprogs/old_e2fsprogs/e2fsck.c
|
|
|
-+++ b/e2fsprogs/old_e2fsprogs/e2fsck.c
|
|
|
-@@ -11577,7 +11577,7 @@ static void check_resize_inode(e2fsck_t
|
|
|
- * s_reserved_gdt_blocks must be zero.
|
|
|
- */
|
|
|
- if (!(fs->super->s_feature_compat &
|
|
|
-- EXT2_FEATURE_COMPAT_RESIZE_INODE)) {
|
|
|
-+ EXT2_FEATURE_COMPAT_RESIZE_INO)) {
|
|
|
- if (fs->super->s_reserved_gdt_blocks) {
|
|
|
- pctx.num = fs->super->s_reserved_gdt_blocks;
|
|
|
- if (fix_problem(ctx, PR_0_NONZERO_RESERVED_GDT_BLOCKS,
|
|
|
-@@ -11593,7 +11593,7 @@ static void check_resize_inode(e2fsck_t
|
|
|
- retval = ext2fs_read_inode(fs, EXT2_RESIZE_INO, &inode);
|
|
|
- if (retval) {
|
|
|
- if (fs->super->s_feature_compat &
|
|
|
-- EXT2_FEATURE_COMPAT_RESIZE_INODE)
|
|
|
-+ EXT2_FEATURE_COMPAT_RESIZE_INO)
|
|
|
- ctx->flags |= E2F_FLAG_RESIZE_INODE;
|
|
|
- return;
|
|
|
- }
|
|
|
-@@ -11603,7 +11603,7 @@ static void check_resize_inode(e2fsck_t
|
|
|
- * the resize inode is cleared; then we're done.
|
|
|
- */
|
|
|
- if (!(fs->super->s_feature_compat &
|
|
|
-- EXT2_FEATURE_COMPAT_RESIZE_INODE)) {
|
|
|
-+ EXT2_FEATURE_COMPAT_RESIZE_INO)) {
|
|
|
- for (i=0; i < EXT2_N_BLOCKS; i++) {
|
|
|
- if (inode.i_block[i])
|
|
|
- break;
|
|
|
---- a/e2fsprogs/old_e2fsprogs/e2p/feature.c
|
|
|
-+++ b/e2fsprogs/old_e2fsprogs/e2p/feature.c
|
|
|
-@@ -34,7 +34,7 @@ static const struct feature feature_list
|
|
|
- "ext_attr" },
|
|
|
- { E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX,
|
|
|
- "dir_index" },
|
|
|
-- { E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_RESIZE_INODE,
|
|
|
-+ { E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_RESIZE_INO,
|
|
|
- "resize_inode" },
|
|
|
- { E2P_FEATURE_RO_INCOMPAT, EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER,
|
|
|
- "sparse_super" },
|
|
|
---- a/e2fsprogs/old_e2fsprogs/ext2fs/ext2_fs.h
|
|
|
-+++ b/e2fsprogs/old_e2fsprogs/ext2fs/ext2_fs.h
|
|
|
-@@ -475,7 +475,7 @@ struct ext2_super_block {
|
|
|
- #define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002
|
|
|
- #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
|
|
|
- #define EXT2_FEATURE_COMPAT_EXT_ATTR 0x0008
|
|
|
--#define EXT2_FEATURE_COMPAT_RESIZE_INODE 0x0010
|
|
|
-+#define EXT2_FEATURE_COMPAT_RESIZE_INO 0x0010
|
|
|
- #define EXT2_FEATURE_COMPAT_DIR_INDEX 0x0020
|
|
|
-
|
|
|
- #define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
|
|
|
---- a/e2fsprogs/old_e2fsprogs/ext2fs/ext2fs.h
|
|
|
-+++ b/e2fsprogs/old_e2fsprogs/ext2fs/ext2fs.h
|
|
|
-@@ -383,7 +383,7 @@ typedef struct ext2_icount *ext2_icount_
|
|
|
- #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
|
|
|
- EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
|
|
|
- EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
|
|
|
-- EXT2_FEATURE_COMPAT_RESIZE_INODE|\
|
|
|
-+ EXT2_FEATURE_COMPAT_RESIZE_INO|\
|
|
|
- EXT2_FEATURE_COMPAT_DIR_INDEX|\
|
|
|
- EXT2_FEATURE_COMPAT_EXT_ATTR)
|
|
|
-
|
|
|
---- a/e2fsprogs/old_e2fsprogs/ext2fs/initialize.c
|
|
|
-+++ b/e2fsprogs/old_e2fsprogs/ext2fs/initialize.c
|
|
|
-@@ -284,7 +284,7 @@ retry:
|
|
|
- /*
|
|
|
- * check the number of reserved group descriptor table blocks
|
|
|
- */
|
|
|
-- if (super->s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE)
|
|
|
-+ if (super->s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INO)
|
|
|
- rsv_gdt = calc_reserved_gdt_blocks(fs);
|
|
|
- else
|
|
|
- rsv_gdt = 0;
|
|
|
---- a/e2fsprogs/old_e2fsprogs/mke2fs.c
|
|
|
-+++ b/e2fsprogs/old_e2fsprogs/mke2fs.c
|
|
|
-@@ -757,7 +757,7 @@ static void parse_extended_opts(struct e
|
|
|
-
|
|
|
- if (rsv_gdb > 0) {
|
|
|
- sb_param->s_feature_compat |=
|
|
|
-- EXT2_FEATURE_COMPAT_RESIZE_INODE;
|
|
|
-+ EXT2_FEATURE_COMPAT_RESIZE_INO;
|
|
|
-
|
|
|
- sb_param->s_reserved_gdt_blocks = rsv_gdb;
|
|
|
- }
|
|
|
-@@ -778,7 +778,7 @@ static void parse_extended_opts(struct e
|
|
|
-
|
|
|
- static __u32 ok_features[3] = {
|
|
|
- EXT3_FEATURE_COMPAT_HAS_JOURNAL |
|
|
|
-- EXT2_FEATURE_COMPAT_RESIZE_INODE |
|
|
|
-+ EXT2_FEATURE_COMPAT_RESIZE_INO |
|
|
|
- EXT2_FEATURE_COMPAT_DIR_INDEX, /* Compat */
|
|
|
- EXT2_FEATURE_INCOMPAT_FILETYPE| /* Incompat */
|
|
|
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
|
|
|
-@@ -1123,7 +1123,7 @@ static int PRS(int argc, char **argv)
|
|
|
- /* Since sparse_super is the default, we would only have a problem
|
|
|
- * here if it was explicitly disabled.
|
|
|
- */
|
|
|
-- if ((param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) &&
|
|
|
-+ if ((param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INO) &&
|
|
|
- !(param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
|
|
|
- bb_error_msg_and_die("reserved online resize blocks not supported "
|
|
|
- "on non-sparse filesystem");
|
|
|
-@@ -1312,7 +1312,7 @@ int mke2fs_main (int argc, char **argv)
|
|
|
- reserve_inodes(fs);
|
|
|
- create_bad_block_inode(fs, bb_list);
|
|
|
- if (fs->super->s_feature_compat &
|
|
|
-- EXT2_FEATURE_COMPAT_RESIZE_INODE) {
|
|
|
-+ EXT2_FEATURE_COMPAT_RESIZE_INO) {
|
|
|
- retval = ext2fs_create_resize_inode(fs);
|
|
|
- mke2fs_error_msg_and_die(retval, "reserve blocks for online resize");
|
|
|
- }
|
|
|
---- a/e2fsprogs/tune2fs.c
|
|
|
-+++ b/e2fsprogs/tune2fs.c
|
|
|
-@@ -8,7 +8,7 @@
|
|
|
- */
|
|
|
- #include "libbb.h"
|
|
|
- #include <linux/fs.h>
|
|
|
--#include <linux/ext2_fs.h>
|
|
|
-+#include "bb_e2fs_defs.h"
|
|
|
-
|
|
|
- // storage helpers
|
|
|
- char BUG_wrong_field_size(void);
|
|
|
---- /dev/null
|
|
|
-+++ b/include/bb_e2fs_defs.h
|
|
|
-@@ -0,0 +1,602 @@
|
|
|
-+/* vi: set sw=4 ts=4: */
|
|
|
-+/*
|
|
|
-+ * linux/include/linux/ext2_fs.h
|
|
|
-+ *
|
|
|
-+ * Copyright (C) 1992, 1993, 1994, 1995
|
|
|
-+ * Remy Card ([email protected])
|
|
|
-+ * Laboratoire MASI - Institut Blaise Pascal
|
|
|
-+ * Universite Pierre et Marie Curie (Paris VI)
|
|
|
-+ *
|
|
|
-+ * Copyright (C) 1991, 1992 Linus Torvalds
|
|
|
-+ */
|
|
|
-+
|
|
|
-+#ifndef LINUX_EXT2_FS_H
|
|
|
-+#define LINUX_EXT2_FS_H 1
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Special inode numbers
|
|
|
-+ */
|
|
|
-+#define EXT2_BAD_INO 1 /* Bad blocks inode */
|
|
|
-+#define EXT2_ROOT_INO 2 /* Root inode */
|
|
|
-+#define EXT2_ACL_IDX_INO 3 /* ACL inode */
|
|
|
-+#define EXT2_ACL_DATA_INO 4 /* ACL inode */
|
|
|
-+#define EXT2_BOOT_LOADER_INO 5 /* Boot loader inode */
|
|
|
-+#define EXT2_UNDEL_DIR_INO 6 /* Undelete directory inode */
|
|
|
-+#define EXT2_RESIZE_INO 7 /* Reserved group descriptors inode */
|
|
|
-+#define EXT2_JOURNAL_INO 8 /* Journal inode */
|
|
|
-+
|
|
|
-+/* First non-reserved inode for old ext2 filesystems */
|
|
|
-+#define EXT2_GOOD_OLD_FIRST_INO 11
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * The second extended file system magic number
|
|
|
-+ */
|
|
|
-+#define EXT2_SUPER_MAGIC 0xEF53
|
|
|
-+
|
|
|
-+/* Assume that user mode programs are passing in an ext2fs superblock, not
|
|
|
-+ * a kernel struct super_block. This will allow us to call the feature-test
|
|
|
-+ * macros from user land. */
|
|
|
-+#define EXT2_SB(sb) (sb)
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Maximal count of links to a file
|
|
|
-+ */
|
|
|
-+#define EXT2_LINK_MAX 32000
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Macro-instructions used to manage several block sizes
|
|
|
-+ */
|
|
|
-+#define EXT2_MIN_BLOCK_LOG_SIZE 10 /* 1024 */
|
|
|
-+#define EXT2_MAX_BLOCK_LOG_SIZE 16 /* 65536 */
|
|
|
-+#define EXT2_MIN_BLOCK_SIZE (1 << EXT2_MIN_BLOCK_LOG_SIZE)
|
|
|
-+#define EXT2_MAX_BLOCK_SIZE (1 << EXT2_MAX_BLOCK_LOG_SIZE)
|
|
|
-+#define EXT2_BLOCK_SIZE(s) (EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size)
|
|
|
-+#define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
|
|
|
-+#define EXT2_INODE_SIZE(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
|
|
|
-+ EXT2_GOOD_OLD_INODE_SIZE : (s)->s_inode_size)
|
|
|
-+#define EXT2_FIRST_INO(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
|
|
|
-+ EXT2_GOOD_OLD_FIRST_INO : (s)->s_first_ino)
|
|
|
-+#define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof(uint32_t))
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Macro-instructions used to manage fragments
|
|
|
-+ */
|
|
|
-+#define EXT2_MIN_FRAG_SIZE EXT2_MIN_BLOCK_SIZE
|
|
|
-+#define EXT2_MAX_FRAG_SIZE EXT2_MAX_BLOCK_SIZE
|
|
|
-+#define EXT2_MIN_FRAG_LOG_SIZE EXT2_MIN_BLOCK_LOG_SIZE
|
|
|
-+#define EXT2_FRAG_SIZE(s) (EXT2_MIN_FRAG_SIZE << (s)->s_log_frag_size)
|
|
|
-+#define EXT2_FRAGS_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / EXT2_FRAG_SIZE(s))
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * ACL structures
|
|
|
-+ */
|
|
|
-+struct ext2_acl_header { /* Header of Access Control Lists */
|
|
|
-+ uint32_t aclh_size;
|
|
|
-+ uint32_t aclh_file_count;
|
|
|
-+ uint32_t aclh_acle_count;
|
|
|
-+ uint32_t aclh_first_acle;
|
|
|
-+};
|
|
|
-+
|
|
|
-+struct ext2_acl_entry { /* Access Control List Entry */
|
|
|
-+ uint32_t acle_size;
|
|
|
-+ uint16_t acle_perms; /* Access permissions */
|
|
|
-+ uint16_t acle_type; /* Type of entry */
|
|
|
-+ uint16_t acle_tag; /* User or group identity */
|
|
|
-+ uint16_t acle_pad1;
|
|
|
-+ uint32_t acle_next; /* Pointer on next entry for the */
|
|
|
-+ /* same inode or on next free entry */
|
|
|
-+};
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Structure of a blocks group descriptor
|
|
|
-+ */
|
|
|
-+struct ext2_group_desc {
|
|
|
-+ uint32_t bg_block_bitmap; /* Blocks bitmap block */
|
|
|
-+ uint32_t bg_inode_bitmap; /* Inodes bitmap block */
|
|
|
-+ uint32_t bg_inode_table; /* Inodes table block */
|
|
|
-+ uint16_t bg_free_blocks_count; /* Free blocks count */
|
|
|
-+ uint16_t bg_free_inodes_count; /* Free inodes count */
|
|
|
-+ uint16_t bg_used_dirs_count; /* Directories count */
|
|
|
-+ uint16_t bg_pad;
|
|
|
-+ uint32_t bg_reserved[3];
|
|
|
-+};
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Data structures used by the directory indexing feature
|
|
|
-+ *
|
|
|
-+ * Note: all of the multibyte integer fields are little endian.
|
|
|
-+ */
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Note: dx_root_info is laid out so that if it should somehow get
|
|
|
-+ * overlaid by a dirent the two low bits of the hash version will be
|
|
|
-+ * zero. Therefore, the hash version mod 4 should never be 0.
|
|
|
-+ * Sincerely, the paranoia department.
|
|
|
-+ */
|
|
|
-+struct ext2_dx_root_info {
|
|
|
-+ uint32_t reserved_zero;
|
|
|
-+ uint8_t hash_version; /* 0 now, 1 at release */
|
|
|
-+ uint8_t info_length; /* 8 */
|
|
|
-+ uint8_t indirect_levels;
|
|
|
-+ uint8_t unused_flags;
|
|
|
-+};
|
|
|
-+
|
|
|
-+#define EXT2_HASH_LEGACY 0
|
|
|
-+#define EXT2_HASH_HALF_MD4 1
|
|
|
-+#define EXT2_HASH_TEA 2
|
|
|
-+
|
|
|
-+#define EXT2_HASH_FLAG_INCOMPAT 0x1
|
|
|
-+
|
|
|
-+struct ext2_dx_entry {
|
|
|
-+ uint32_t hash;
|
|
|
-+ uint32_t block;
|
|
|
-+};
|
|
|
-+
|
|
|
-+struct ext2_dx_countlimit {
|
|
|
-+ uint16_t limit;
|
|
|
-+ uint16_t count;
|
|
|
-+};
|
|
|
-+
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Macro-instructions used to manage group descriptors
|
|
|
-+ */
|
|
|
-+#define EXT2_BLOCKS_PER_GROUP(s) (EXT2_SB(s)->s_blocks_per_group)
|
|
|
-+#define EXT2_INODES_PER_GROUP(s) (EXT2_SB(s)->s_inodes_per_group)
|
|
|
-+#define EXT2_INODES_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s)/EXT2_INODE_SIZE(s))
|
|
|
-+/* limits imposed by 16-bit value gd_free_{blocks,inode}_count */
|
|
|
-+#define EXT2_MAX_BLOCKS_PER_GROUP(s) ((1 << 16) - 8)
|
|
|
-+#define EXT2_MAX_INODES_PER_GROUP(s) ((1 << 16) - EXT2_INODES_PER_BLOCK(s))
|
|
|
-+#define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Constants relative to the data blocks
|
|
|
-+ */
|
|
|
-+#define EXT2_NDIR_BLOCKS 12
|
|
|
-+#define EXT2_IND_BLOCK EXT2_NDIR_BLOCKS
|
|
|
-+#define EXT2_DIND_BLOCK (EXT2_IND_BLOCK + 1)
|
|
|
-+#define EXT2_TIND_BLOCK (EXT2_DIND_BLOCK + 1)
|
|
|
-+#define EXT2_N_BLOCKS (EXT2_TIND_BLOCK + 1)
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Inode flags
|
|
|
-+ */
|
|
|
-+#define EXT2_SECRM_FL 0x00000001 /* Secure deletion */
|
|
|
-+#define EXT2_UNRM_FL 0x00000002 /* Undelete */
|
|
|
-+#define EXT2_COMPR_FL 0x00000004 /* Compress file */
|
|
|
-+#define EXT2_SYNC_FL 0x00000008 /* Synchronous updates */
|
|
|
-+#define EXT2_IMMUTABLE_FL 0x00000010 /* Immutable file */
|
|
|
-+#define EXT2_APPEND_FL 0x00000020 /* writes to file may only append */
|
|
|
-+#define EXT2_NODUMP_FL 0x00000040 /* do not dump file */
|
|
|
-+#define EXT2_NOATIME_FL 0x00000080 /* do not update atime */
|
|
|
-+/* Reserved for compression usage... */
|
|
|
-+#define EXT2_DIRTY_FL 0x00000100
|
|
|
-+#define EXT2_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
|
|
|
-+#define EXT2_NOCOMPR_FL 0x00000400 /* Access raw compressed data */
|
|
|
-+#define EXT2_ECOMPR_FL 0x00000800 /* Compression error */
|
|
|
-+/* End compression flags --- maybe not all used */
|
|
|
-+#define EXT2_BTREE_FL 0x00001000 /* btree format dir */
|
|
|
-+#define EXT2_INDEX_FL 0x00001000 /* hash-indexed directory */
|
|
|
-+#define EXT2_IMAGIC_FL 0x00002000
|
|
|
-+#define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */
|
|
|
-+#define EXT2_NOTAIL_FL 0x00008000 /* file tail should not be merged */
|
|
|
-+#define EXT2_DIRSYNC_FL 0x00010000 /* Synchronous directory modifications */
|
|
|
-+#define EXT2_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
|
|
|
-+#define EXT3_EXTENTS_FL 0x00080000 /* Inode uses extents */
|
|
|
-+#define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
|
|
|
-+
|
|
|
-+#define EXT2_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
|
|
|
-+#define EXT2_FL_USER_MODIFIABLE 0x000080FF /* User modifiable flags */
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * ioctl commands
|
|
|
-+ */
|
|
|
-+#define EXT2_IOC_GETFLAGS _IOR('f', 1, long)
|
|
|
-+#define EXT2_IOC_SETFLAGS _IOW('f', 2, long)
|
|
|
-+#define EXT2_IOC_GETVERSION _IOR('v', 1, long)
|
|
|
-+#define EXT2_IOC_SETVERSION _IOW('v', 2, long)
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Structure of an inode on the disk
|
|
|
-+ */
|
|
|
-+struct ext2_inode {
|
|
|
-+ uint16_t i_mode; /* File mode */
|
|
|
-+ uint16_t i_uid; /* Low 16 bits of Owner Uid */
|
|
|
-+ uint32_t i_size; /* Size in bytes */
|
|
|
-+ uint32_t i_atime; /* Access time */
|
|
|
-+ uint32_t i_ctime; /* Creation time */
|
|
|
-+ uint32_t i_mtime; /* Modification time */
|
|
|
-+ uint32_t i_dtime; /* Deletion Time */
|
|
|
-+ uint16_t i_gid; /* Low 16 bits of Group Id */
|
|
|
-+ uint16_t i_links_count; /* Links count */
|
|
|
-+ uint32_t i_blocks; /* Blocks count */
|
|
|
-+ uint32_t i_flags; /* File flags */
|
|
|
-+ union {
|
|
|
-+ struct {
|
|
|
-+ uint32_t l_i_reserved1;
|
|
|
-+ } linux1;
|
|
|
-+ struct {
|
|
|
-+ uint32_t h_i_translator;
|
|
|
-+ } hurd1;
|
|
|
-+ struct {
|
|
|
-+ uint32_t m_i_reserved1;
|
|
|
-+ } masix1;
|
|
|
-+ } osd1; /* OS dependent 1 */
|
|
|
-+ uint32_t i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
|
|
|
-+ uint32_t i_generation; /* File version (for NFS) */
|
|
|
-+ uint32_t i_file_acl; /* File ACL */
|
|
|
-+ uint32_t i_dir_acl; /* Directory ACL */
|
|
|
-+ uint32_t i_faddr; /* Fragment address */
|
|
|
-+ union {
|
|
|
-+ struct {
|
|
|
-+ uint8_t l_i_frag; /* Fragment number */
|
|
|
-+ uint8_t l_i_fsize; /* Fragment size */
|
|
|
-+ uint16_t i_pad1;
|
|
|
-+ uint16_t l_i_uid_high; /* these 2 fields */
|
|
|
-+ uint16_t l_i_gid_high; /* were reserved2[0] */
|
|
|
-+ uint32_t l_i_reserved2;
|
|
|
-+ } linux2;
|
|
|
-+ struct {
|
|
|
-+ uint8_t h_i_frag; /* Fragment number */
|
|
|
-+ uint8_t h_i_fsize; /* Fragment size */
|
|
|
-+ uint16_t h_i_mode_high;
|
|
|
-+ uint16_t h_i_uid_high;
|
|
|
-+ uint16_t h_i_gid_high;
|
|
|
-+ uint32_t h_i_author;
|
|
|
-+ } hurd2;
|
|
|
-+ struct {
|
|
|
-+ uint8_t m_i_frag; /* Fragment number */
|
|
|
-+ uint8_t m_i_fsize; /* Fragment size */
|
|
|
-+ uint16_t m_pad1;
|
|
|
-+ uint32_t m_i_reserved2[2];
|
|
|
-+ } masix2;
|
|
|
-+ } osd2; /* OS dependent 2 */
|
|
|
-+};
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Permanent part of an large inode on the disk
|
|
|
-+ */
|
|
|
-+struct ext2_inode_large {
|
|
|
-+ uint16_t i_mode; /* File mode */
|
|
|
-+ uint16_t i_uid; /* Low 16 bits of Owner Uid */
|
|
|
-+ uint32_t i_size; /* Size in bytes */
|
|
|
-+ uint32_t i_atime; /* Access time */
|
|
|
-+ uint32_t i_ctime; /* Creation time */
|
|
|
-+ uint32_t i_mtime; /* Modification time */
|
|
|
-+ uint32_t i_dtime; /* Deletion Time */
|
|
|
-+ uint16_t i_gid; /* Low 16 bits of Group Id */
|
|
|
-+ uint16_t i_links_count; /* Links count */
|
|
|
-+ uint32_t i_blocks; /* Blocks count */
|
|
|
-+ uint32_t i_flags; /* File flags */
|
|
|
-+ union {
|
|
|
-+ struct {
|
|
|
-+ uint32_t l_i_reserved1;
|
|
|
-+ } linux1;
|
|
|
-+ struct {
|
|
|
-+ uint32_t h_i_translator;
|
|
|
-+ } hurd1;
|
|
|
-+ struct {
|
|
|
-+ uint32_t m_i_reserved1;
|
|
|
-+ } masix1;
|
|
|
-+ } osd1; /* OS dependent 1 */
|
|
|
-+ uint32_t i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
|
|
|
-+ uint32_t i_generation; /* File version (for NFS) */
|
|
|
-+ uint32_t i_file_acl; /* File ACL */
|
|
|
-+ uint32_t i_dir_acl; /* Directory ACL */
|
|
|
-+ uint32_t i_faddr; /* Fragment address */
|
|
|
-+ union {
|
|
|
-+ struct {
|
|
|
-+ uint8_t l_i_frag; /* Fragment number */
|
|
|
-+ uint8_t l_i_fsize; /* Fragment size */
|
|
|
-+ uint16_t i_pad1;
|
|
|
-+ uint16_t l_i_uid_high; /* these 2 fields */
|
|
|
-+ uint16_t l_i_gid_high; /* were reserved2[0] */
|
|
|
-+ uint32_t l_i_reserved2;
|
|
|
-+ } linux2;
|
|
|
-+ struct {
|
|
|
-+ uint8_t h_i_frag; /* Fragment number */
|
|
|
-+ uint8_t h_i_fsize; /* Fragment size */
|
|
|
-+ uint16_t h_i_mode_high;
|
|
|
-+ uint16_t h_i_uid_high;
|
|
|
-+ uint16_t h_i_gid_high;
|
|
|
-+ uint32_t h_i_author;
|
|
|
-+ } hurd2;
|
|
|
-+ struct {
|
|
|
-+ uint8_t m_i_frag; /* Fragment number */
|
|
|
-+ uint8_t m_i_fsize; /* Fragment size */
|
|
|
-+ uint16_t m_pad1;
|
|
|
-+ uint32_t m_i_reserved2[2];
|
|
|
-+ } masix2;
|
|
|
-+ } osd2; /* OS dependent 2 */
|
|
|
-+ uint16_t i_extra_isize;
|
|
|
-+ uint16_t i_pad1;
|
|
|
-+};
|
|
|
-+
|
|
|
-+#define i_size_high i_dir_acl
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * File system states
|
|
|
-+ */
|
|
|
-+#define EXT2_VALID_FS 0x0001 /* Unmounted cleanly */
|
|
|
-+#define EXT2_ERROR_FS 0x0002 /* Errors detected */
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Mount flags
|
|
|
-+ */
|
|
|
-+#define EXT2_MOUNT_CHECK 0x0001 /* Do mount-time checks */
|
|
|
-+#define EXT2_MOUNT_GRPID 0x0004 /* Create files with directory's group */
|
|
|
-+#define EXT2_MOUNT_DEBUG 0x0008 /* Some debugging messages */
|
|
|
-+#define EXT2_MOUNT_ERRORS_CONT 0x0010 /* Continue on errors */
|
|
|
-+#define EXT2_MOUNT_ERRORS_RO 0x0020 /* Remount fs ro on errors */
|
|
|
-+#define EXT2_MOUNT_ERRORS_PANIC 0x0040 /* Panic on errors */
|
|
|
-+#define EXT2_MOUNT_MINIX_DF 0x0080 /* Mimics the Minix statfs */
|
|
|
-+#define EXT2_MOUNT_NO_UID32 0x0200 /* Disable 32-bit UIDs */
|
|
|
-+
|
|
|
-+#define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt
|
|
|
-+#define set_opt(o, opt) o |= EXT2_MOUNT_##opt
|
|
|
-+#define test_opt(sb, opt) (EXT2_SB(sb)->s_mount_opt & \
|
|
|
-+ EXT2_MOUNT_##opt)
|
|
|
-+/*
|
|
|
-+ * Maximal mount counts between two filesystem checks
|
|
|
-+ */
|
|
|
-+#define EXT2_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */
|
|
|
-+#define EXT2_DFL_CHECKINTERVAL 0 /* Don't use interval check */
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Behaviour when detecting errors
|
|
|
-+ */
|
|
|
-+#define EXT2_ERRORS_CONTINUE 1 /* Continue execution */
|
|
|
-+#define EXT2_ERRORS_RO 2 /* Remount fs read-only */
|
|
|
-+#define EXT2_ERRORS_PANIC 3 /* Panic */
|
|
|
-+#define EXT2_ERRORS_DEFAULT EXT2_ERRORS_CONTINUE
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Structure of the super block
|
|
|
-+ */
|
|
|
-+struct ext2_super_block {
|
|
|
-+ uint32_t s_inodes_count; /* Inodes count */
|
|
|
-+ uint32_t s_blocks_count; /* Blocks count */
|
|
|
-+ uint32_t s_r_blocks_count; /* Reserved blocks count */
|
|
|
-+ uint32_t s_free_blocks_count; /* Free blocks count */
|
|
|
-+ uint32_t s_free_inodes_count; /* Free inodes count */
|
|
|
-+ uint32_t s_first_data_block; /* First Data Block */
|
|
|
-+ uint32_t s_log_block_size; /* Block size */
|
|
|
-+ int32_t s_log_frag_size; /* Fragment size */
|
|
|
-+ uint32_t s_blocks_per_group; /* # Blocks per group */
|
|
|
-+ uint32_t s_frags_per_group; /* # Fragments per group */
|
|
|
-+ uint32_t s_inodes_per_group; /* # Inodes per group */
|
|
|
-+ uint32_t s_mtime; /* Mount time */
|
|
|
-+ uint32_t s_wtime; /* Write time */
|
|
|
-+ uint16_t s_mnt_count; /* Mount count */
|
|
|
-+ int16_t s_max_mnt_count; /* Maximal mount count */
|
|
|
-+ uint16_t s_magic; /* Magic signature */
|
|
|
-+ uint16_t s_state; /* File system state */
|
|
|
-+ uint16_t s_errors; /* Behaviour when detecting errors */
|
|
|
-+ uint16_t s_minor_rev_level; /* minor revision level */
|
|
|
-+ uint32_t s_lastcheck; /* time of last check */
|
|
|
-+ uint32_t s_checkinterval; /* max. time between checks */
|
|
|
-+ uint32_t s_creator_os; /* OS */
|
|
|
-+ uint32_t s_rev_level; /* Revision level */
|
|
|
-+ uint16_t s_def_resuid; /* Default uid for reserved blocks */
|
|
|
-+ uint16_t s_def_resgid; /* Default gid for reserved blocks */
|
|
|
-+ /*
|
|
|
-+ * These fields are for EXT2_DYNAMIC_REV superblocks only.
|
|
|
-+ *
|
|
|
-+ * Note: the difference between the compatible feature set and
|
|
|
-+ * the incompatible feature set is that if there is a bit set
|
|
|
-+ * in the incompatible feature set that the kernel doesn't
|
|
|
-+ * know about, it should refuse to mount the filesystem.
|
|
|
-+ *
|
|
|
-+ * e2fsck's requirements are more strict; if it doesn't know
|
|
|
-+ * about a feature in either the compatible or incompatible
|
|
|
-+ * feature set, it must abort and not try to meddle with
|
|
|
-+ * things it doesn't understand...
|
|
|
-+ */
|
|
|
-+ uint32_t s_first_ino; /* First non-reserved inode */
|
|
|
-+ uint16_t s_inode_size; /* size of inode structure */
|
|
|
-+ uint16_t s_block_group_nr; /* block group # of this superblock */
|
|
|
-+ uint32_t s_feature_compat; /* compatible feature set */
|
|
|
-+ uint32_t s_feature_incompat; /* incompatible feature set */
|
|
|
-+ uint32_t s_feature_ro_compat; /* readonly-compatible feature set */
|
|
|
-+ uint8_t s_uuid[16]; /* 128-bit uuid for volume */
|
|
|
-+ char s_volume_name[16]; /* volume name */
|
|
|
-+ char s_last_mounted[64]; /* directory where last mounted */
|
|
|
-+ uint32_t s_algorithm_usage_bitmap; /* For compression */
|
|
|
-+ /*
|
|
|
-+ * Performance hints. Directory preallocation should only
|
|
|
-+ * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on.
|
|
|
-+ */
|
|
|
-+ uint8_t s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
|
|
|
-+ uint8_t s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
|
|
|
-+ uint16_t s_reserved_gdt_blocks; /* Per group table for online growth */
|
|
|
-+ /*
|
|
|
-+ * Journaling support valid if EXT2_FEATURE_COMPAT_HAS_JOURNAL set.
|
|
|
-+ */
|
|
|
-+/*D0*/ uint8_t s_journal_uuid[16]; /* uuid of journal superblock */
|
|
|
-+/*E0*/ uint32_t s_journal_inum; /* inode number of journal file */
|
|
|
-+ uint32_t s_journal_dev; /* device number of journal file */
|
|
|
-+ uint32_t s_last_orphan; /* start of list of inodes to delete */
|
|
|
-+ uint32_t s_hash_seed[4]; /* HTREE hash seed */
|
|
|
-+ uint8_t s_def_hash_version; /* Default hash version to use */
|
|
|
-+ uint8_t s_jnl_backup_type; /* Default type of journal backup */
|
|
|
-+ uint16_t s_reserved_word_pad;
|
|
|
-+/*100*/ uint32_t s_default_mount_opts;
|
|
|
-+ uint32_t s_first_meta_bg; /* First metablock group */
|
|
|
-+ /* ext3 additions */
|
|
|
-+ uint32_t s_mkfs_time; /* When the filesystem was created */
|
|
|
-+ uint32_t s_jnl_blocks[17]; /* Backup of the journal inode */
|
|
|
-+ /* 64bit support valid if EXT4_FEATURE_COMPAT_64BIT */
|
|
|
-+/*150*/ uint32_t s_blocks_count_hi; /* Blocks count */
|
|
|
-+ uint32_t s_r_blocks_count_hi; /* Reserved blocks count */
|
|
|
-+ uint32_t s_free_blocks_count_hi; /* Free blocks count */
|
|
|
-+ uint16_t s_min_extra_isize; /* All inodes have at least # bytes */
|
|
|
-+ uint16_t s_want_extra_isize; /* New inodes should reserve # bytes */
|
|
|
-+ uint32_t s_flags; /* Miscellaneous flags */
|
|
|
-+ uint16_t s_raid_stride; /* RAID stride */
|
|
|
-+ uint16_t s_mmp_interval; /* # seconds to wait in MMP checking */
|
|
|
-+ uint64_t s_mmp_block; /* Block for multi-mount protection */
|
|
|
-+ uint32_t s_raid_stripe_width; /* blocks on all data disks (N*stride)*/
|
|
|
-+ uint8_t s_log_groups_per_flex; /* FLEX_BG group size */
|
|
|
-+ uint8_t s_reserved_char_pad2;
|
|
|
-+ uint16_t s_reserved_pad;
|
|
|
-+ uint32_t s_reserved[162]; /* Padding to the end of the block */
|
|
|
-+};
|
|
|
-+struct BUG_ext2_super_block {
|
|
|
-+ char bug[sizeof(struct ext2_super_block) == 1024 ? 1 : -1];
|
|
|
-+};
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Codes for operating systems
|
|
|
-+ */
|
|
|
-+#define EXT2_OS_LINUX 0
|
|
|
-+#define EXT2_OS_HURD 1
|
|
|
-+#define EXT2_OS_MASIX 2
|
|
|
-+#define EXT2_OS_FREEBSD 3
|
|
|
-+#define EXT2_OS_LITES 4
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Revision levels
|
|
|
-+ */
|
|
|
-+#define EXT2_GOOD_OLD_REV 0 /* The good old (original) format */
|
|
|
-+#define EXT2_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */
|
|
|
-+
|
|
|
-+#define EXT2_CURRENT_REV EXT2_GOOD_OLD_REV
|
|
|
-+#define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV
|
|
|
-+
|
|
|
-+#define EXT2_GOOD_OLD_INODE_SIZE 128
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Journal inode backup types
|
|
|
-+ */
|
|
|
-+#define EXT3_JNL_BACKUP_BLOCKS 1
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Feature set definitions
|
|
|
-+ */
|
|
|
-+
|
|
|
-+#define EXT2_HAS_COMPAT_FEATURE(sb,mask) \
|
|
|
-+ ( EXT2_SB(sb)->s_feature_compat & (mask) )
|
|
|
-+#define EXT2_HAS_RO_COMPAT_FEATURE(sb,mask) \
|
|
|
-+ ( EXT2_SB(sb)->s_feature_ro_compat & (mask) )
|
|
|
-+#define EXT2_HAS_INCOMPAT_FEATURE(sb,mask) \
|
|
|
-+ ( EXT2_SB(sb)->s_feature_incompat & (mask) )
|
|
|
-+
|
|
|
-+/* for s_feature_compat */
|
|
|
-+#define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001
|
|
|
-+#define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002
|
|
|
-+#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
|
|
|
-+#define EXT2_FEATURE_COMPAT_EXT_ATTR 0x0008
|
|
|
-+#define EXT2_FEATURE_COMPAT_RESIZE_INO 0x0010
|
|
|
-+#define EXT2_FEATURE_COMPAT_DIR_INDEX 0x0020
|
|
|
-+
|
|
|
-+/* for s_feature_ro_compat */
|
|
|
-+#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
|
|
|
-+#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
|
|
|
-+#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 /* not used */
|
|
|
-+#define EXT4_FEATURE_RO_COMPAT_HUGE_FILE 0x0008
|
|
|
-+#define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010
|
|
|
-+#define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020
|
|
|
-+#define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040
|
|
|
-+
|
|
|
-+/* for s_feature_incompat */
|
|
|
-+#define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001
|
|
|
-+#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
|
|
|
-+#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
|
|
|
-+#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
|
|
|
-+#define EXT2_FEATURE_INCOMPAT_META_BG 0x0010
|
|
|
-+#define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040
|
|
|
-+#define EXT4_FEATURE_INCOMPAT_64BIT 0x0080
|
|
|
-+#define EXT4_FEATURE_INCOMPAT_MMP 0x0100
|
|
|
-+#define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200
|
|
|
-+
|
|
|
-+
|
|
|
-+#define EXT2_FEATURE_COMPAT_SUPP 0
|
|
|
-+#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
|
|
|
-+ EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
|
|
|
-+ EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
|
|
|
-+#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
|
|
|
-+ EXT2_FEATURE_INCOMPAT_META_BG)
|
|
|
-+#define EXT2_FEATURE_INCOMPAT_UNSUPPORTED (~EXT2_FEATURE_INCOMPAT_SUPP)
|
|
|
-+#define EXT2_FEATURE_RO_COMPAT_UNSUPPORTED (~EXT2_FEATURE_RO_COMPAT_SUPP)
|
|
|
-+
|
|
|
-+#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
|
|
|
-+ EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
|
|
|
-+ EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
|
|
|
-+#define EXT3_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
|
|
|
-+ EXT3_FEATURE_INCOMPAT_RECOVER| \
|
|
|
-+ EXT2_FEATURE_INCOMPAT_META_BG)
|
|
|
-+#define EXT3_FEATURE_INCOMPAT_UNSUPPORTED (~EXT3_FEATURE_INCOMPAT_SUPP)
|
|
|
-+#define EXT3_FEATURE_RO_COMPAT_UNSUPPORTED (~EXT3_FEATURE_RO_COMPAT_SUPP)
|
|
|
-+
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Default values for user and/or group using reserved blocks
|
|
|
-+ */
|
|
|
-+#define EXT2_DEF_RESUID 0
|
|
|
-+#define EXT2_DEF_RESGID 0
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Default mount options
|
|
|
-+ */
|
|
|
-+#define EXT2_DEFM_DEBUG 0x0001
|
|
|
-+#define EXT2_DEFM_BSDGROUPS 0x0002
|
|
|
-+#define EXT2_DEFM_XATTR_USER 0x0004
|
|
|
-+#define EXT2_DEFM_ACL 0x0008
|
|
|
-+#define EXT2_DEFM_UID16 0x0010
|
|
|
-+#define EXT3_DEFM_JMODE 0x0060
|
|
|
-+#define EXT3_DEFM_JMODE_DATA 0x0020
|
|
|
-+#define EXT3_DEFM_JMODE_ORDERED 0x0040
|
|
|
-+#define EXT3_DEFM_JMODE_WBACK 0x0060
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Structure of a directory entry
|
|
|
-+ */
|
|
|
-+#define EXT2_NAME_LEN 255
|
|
|
-+
|
|
|
-+struct ext2_dir_entry {
|
|
|
-+ uint32_t inode; /* Inode number */
|
|
|
-+ uint16_t rec_len; /* Directory entry length */
|
|
|
-+ uint16_t name_len; /* Name length */
|
|
|
-+ char name[EXT2_NAME_LEN]; /* File name */
|
|
|
-+};
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * The new version of the directory entry. Since EXT2 structures are
|
|
|
-+ * stored in intel byte order, and the name_len field could never be
|
|
|
-+ * bigger than 255 chars, it's safe to reclaim the extra byte for the
|
|
|
-+ * file_type field.
|
|
|
-+ */
|
|
|
-+struct ext2_dir_entry_2 {
|
|
|
-+ uint32_t inode; /* Inode number */
|
|
|
-+ uint16_t rec_len; /* Directory entry length */
|
|
|
-+ uint8_t name_len; /* Name length */
|
|
|
-+ uint8_t file_type;
|
|
|
-+ char name[EXT2_NAME_LEN]; /* File name */
|
|
|
-+};
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Ext2 directory file types. Only the low 3 bits are used. The
|
|
|
-+ * other bits are reserved for now.
|
|
|
-+ */
|
|
|
-+#define EXT2_FT_UNKNOWN 0
|
|
|
-+#define EXT2_FT_REG_FILE 1
|
|
|
-+#define EXT2_FT_DIR 2
|
|
|
-+#define EXT2_FT_CHRDEV 3
|
|
|
-+#define EXT2_FT_BLKDEV 4
|
|
|
-+#define EXT2_FT_FIFO 5
|
|
|
-+#define EXT2_FT_SOCK 6
|
|
|
-+#define EXT2_FT_SYMLINK 7
|
|
|
-+
|
|
|
-+#define EXT2_FT_MAX 8
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * EXT2_DIR_PAD defines the directory entries boundaries
|
|
|
-+ *
|
|
|
-+ * NOTE: It must be a multiple of 4
|
|
|
-+ */
|
|
|
-+#define EXT2_DIR_PAD 4
|
|
|
-+#define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
|
|
|
-+#define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
|
|
|
-+ ~EXT2_DIR_ROUND)
|
|
|
-+
|
|
|
-+#endif
|
|
|
---- a/testsuite/mount.tests
|
|
|
-+++ b/testsuite/mount.tests
|
|
|
-@@ -36,7 +36,8 @@ testing "mount -o remount,mand" \
|
|
|
- "mount -o loop mount.image1m $testdir "\
|
|
|
- "&& grep -Fc $testdir </proc/mounts "\
|
|
|
- "&& mount -o remount,mand $testdir "\
|
|
|
--"&& grep -F $testdir </proc/mounts | grep -c '[, ]mand[, ]'" \
|
|
|
-+"&& grep -F $testdir </proc/mounts | grep -c '[, ]mand[, ]'"\
|
|
|
-+"|| grep -F $testdir </proc/mounts" \
|
|
|
- "1\n""1\n" \
|
|
|
- "" ""
|
|
|
-
|
|
|
-@@ -83,4 +84,28 @@ b
|
|
|
- "" ""
|
|
|
- SKIP=
|
|
|
-
|
|
|
-+
|
|
|
-+testing "mount RO loop" "\
|
|
|
-+exec 2>&1
|
|
|
-+umount -d mount.dir 2>/dev/null
|
|
|
-+rmdir mount.dir 2>/dev/null
|
|
|
-+mkdir -p mount.dir
|
|
|
-+(
|
|
|
-+cd mount.dir || { echo 'cd error'; exit 1; }
|
|
|
-+mkdir z1 z2 || { echo 'mkdir error'; exit 1; }
|
|
|
-+mount -t tmpfs tmpfs z1 || { echo 'mount tmpfs error'; exit 1; }
|
|
|
-+dd if=/dev/zero of=z1/e2img count=10 bs=1M 2>/dev/null || { echo 'dd error'; exit 1; }
|
|
|
-+mke2fs -F z1/e2img 2>/dev/null >&2 || { echo 'mke2fs error'; exit 1; }
|
|
|
-+mount -r -o loop -t ext2 z1/e2img z2 || { echo 'mount -r -o loop error'; exit 1; }
|
|
|
-+mount -o remount,ro z1 || { echo 'mount -o remount,ro error'; exit 1; }
|
|
|
-+)
|
|
|
-+umount -d mount.dir/z2
|
|
|
-+##losetup -d /dev/loop*
|
|
|
-+umount -d mount.dir/z1
|
|
|
-+rm -rf mount.dir
|
|
|
-+echo DONE
|
|
|
-+" \
|
|
|
-+"DONE\n" "" ""
|
|
|
-+
|
|
|
-+
|
|
|
- exit $FAILCOUNT
|
|
|
---- a/util-linux/mkfs_ext2.c
|
|
|
-+++ b/util-linux/mkfs_ext2.c
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-@@ -48,16 +48,11 @@
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-
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- #include "libbb.h"
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- #include <linux/fs.h>
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--#include <linux/ext2_fs.h>
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-+#include "bb_e2fs_defs.h"
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-
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- #define ENABLE_FEATURE_MKFS_EXT2_RESERVED_GDT 0
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- #define ENABLE_FEATURE_MKFS_EXT2_DIR_INDEX 1
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-
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--// from e2fsprogs
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--#define s_reserved_gdt_blocks s_padding1
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--#define s_mkfs_time s_reserved[0]
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--#define s_flags s_reserved[22]
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--
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- #define EXT2_HASH_HALF_MD4 1
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- #define EXT2_FLAGS_SIGNED_HASH 0x0001
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- #define EXT2_FLAGS_UNSIGNED_HASH 0x0002
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-@@ -482,8 +477,10 @@ int mkfs_ext2_main(int argc UNUSED_PARAM
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- STORE_LE(sb->s_magic, EXT2_SUPER_MAGIC);
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- STORE_LE(sb->s_inode_size, inodesize);
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- // set "Required extra isize" and "Desired extra isize" fields to 28
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-- if (inodesize != sizeof(*inode))
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-- STORE_LE(sb->s_reserved[21], 0x001C001C);
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-+ if (inodesize != sizeof(*inode)) {
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-+ STORE_LE(sb->s_min_extra_isize, 0x001c);
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-+ STORE_LE(sb->s_want_extra_isize, 0x001c);
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-+ }
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- STORE_LE(sb->s_first_ino, EXT2_GOOD_OLD_FIRST_INO);
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- STORE_LE(sb->s_log_block_size, blocksize_log2 - EXT2_MIN_BLOCK_LOG_SIZE);
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- STORE_LE(sb->s_log_frag_size, blocksize_log2 - EXT2_MIN_BLOCK_LOG_SIZE);
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---- a/util-linux/volume_id/ext.c
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-+++ b/util-linux/volume_id/ext.c
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-@@ -19,28 +19,8 @@
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- */
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-
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- #include "volume_id_internal.h"
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-+#include "bb_e2fs_defs.h"
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-
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--struct ext2_super_block {
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-- uint32_t inodes_count;
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-- uint32_t blocks_count;
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-- uint32_t r_blocks_count;
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-- uint32_t free_blocks_count;
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-- uint32_t free_inodes_count;
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-- uint32_t first_data_block;
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-- uint32_t log_block_size;
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-- uint32_t dummy3[7];
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-- uint8_t magic[2];
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-- uint16_t state;
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-- uint32_t dummy5[8];
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-- uint32_t feature_compat;
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-- uint32_t feature_incompat;
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-- uint32_t feature_ro_compat;
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-- uint8_t uuid[16];
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-- uint8_t volume_name[16];
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--} PACKED;
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--
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--#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x00000004
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--#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x00000008
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- #define EXT_SUPERBLOCK_OFFSET 0x400
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-
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- int FAST_FUNC volume_id_probe_ext(struct volume_id *id /*,uint64_t off*/)
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-@@ -54,23 +34,27 @@ int FAST_FUNC volume_id_probe_ext(struct
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- if (es == NULL)
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- return -1;
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-
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-- if (es->magic[0] != 0123 || es->magic[1] != 0357) {
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-+ if (es->s_magic != cpu_to_le16(EXT2_SUPER_MAGIC)) {
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- dbg("ext: no magic found");
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- return -1;
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- }
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-
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- // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
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- // volume_id_set_label_raw(id, es->volume_name, 16);
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-- volume_id_set_label_string(id, es->volume_name, 16);
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-- volume_id_set_uuid(id, es->uuid, UUID_DCE);
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-+ volume_id_set_label_string(id, (void*)es->s_volume_name, 16);
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-+ volume_id_set_uuid(id, es->s_uuid, UUID_DCE);
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- dbg("ext: label '%s' uuid '%s'", id->label, id->uuid);
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-
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- #if ENABLE_FEATURE_BLKID_TYPE
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-- if ((le32_to_cpu(es->feature_compat) & EXT3_FEATURE_COMPAT_HAS_JOURNAL) != 0)
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-+ if ((es->s_feature_ro_compat & cpu_to_le32(EXT4_FEATURE_RO_COMPAT_HUGE_FILE | EXT4_FEATURE_RO_COMPAT_DIR_NLINK))
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-+ || (es->s_feature_incompat & cpu_to_le32(EXT4_FEATURE_INCOMPAT_EXTENTS | EXT4_FEATURE_INCOMPAT_64BIT))
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-+ ) {
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-+ id->type = "ext4";
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-+ }
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-+ else if (es->s_feature_compat & cpu_to_le32(EXT3_FEATURE_COMPAT_HAS_JOURNAL))
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- id->type = "ext3";
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- else
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- id->type = "ext2";
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- #endif
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--
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- return 0;
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- }
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Felix Fietkau