diff options
Diffstat (limited to 'package/busybox')
| -rw-r--r-- | package/busybox/patches/007-upstream_mkfs_ext2_fixes.patch | 1441 |
1 files changed, 1441 insertions, 0 deletions
diff --git a/package/busybox/patches/007-upstream_mkfs_ext2_fixes.patch b/package/busybox/patches/007-upstream_mkfs_ext2_fixes.patch new file mode 100644 index 000000000..e48883895 --- /dev/null +++ b/package/busybox/patches/007-upstream_mkfs_ext2_fixes.patch @@ -0,0 +1,1441 @@ +--- a/e2fsprogs/e2fs_defs.h ++++ /dev/null +@@ -1,561 +0,0 @@ +-/* vi: set sw=4 ts=4: */ +-/* +- * linux/include/linux/ext2_fs.h +- * +- * Copyright (C) 1992, 1993, 1994, 1995 +- * Remy Card (card@masi.ibp.fr) +- * 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. +- */ +- 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 (card@masi.ibp.fr) ++ * 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 +@@ -48,16 +48,11 @@ + + #include "libbb.h" + #include <linux/fs.h> +-#include <linux/ext2_fs.h> ++#include "bb_e2fs_defs.h" + + #define ENABLE_FEATURE_MKFS_EXT2_RESERVED_GDT 0 + #define ENABLE_FEATURE_MKFS_EXT2_DIR_INDEX 1 + +-// from e2fsprogs +-#define s_reserved_gdt_blocks s_padding1 +-#define s_mkfs_time s_reserved[0] +-#define s_flags s_reserved[22] +- + #define EXT2_HASH_HALF_MD4 1 + #define EXT2_FLAGS_SIGNED_HASH 0x0001 + #define EXT2_FLAGS_UNSIGNED_HASH 0x0002 +@@ -482,8 +477,10 @@ int mkfs_ext2_main(int argc UNUSED_PARAM + STORE_LE(sb->s_magic, EXT2_SUPER_MAGIC); + STORE_LE(sb->s_inode_size, inodesize); + // set "Required extra isize" and "Desired extra isize" fields to 28 +- if (inodesize != sizeof(*inode)) +- STORE_LE(sb->s_reserved[21], 0x001C001C); ++ if (inodesize != sizeof(*inode)) { ++ STORE_LE(sb->s_min_extra_isize, 0x001c); ++ STORE_LE(sb->s_want_extra_isize, 0x001c); ++ } + STORE_LE(sb->s_first_ino, EXT2_GOOD_OLD_FIRST_INO); + STORE_LE(sb->s_log_block_size, blocksize_log2 - EXT2_MIN_BLOCK_LOG_SIZE); + STORE_LE(sb->s_log_frag_size, blocksize_log2 - EXT2_MIN_BLOCK_LOG_SIZE); +--- a/util-linux/volume_id/ext.c ++++ b/util-linux/volume_id/ext.c +@@ -19,28 +19,8 @@ + */ + + #include "volume_id_internal.h" ++#include "bb_e2fs_defs.h" + +-struct ext2_super_block { +- uint32_t inodes_count; +- uint32_t blocks_count; +- uint32_t r_blocks_count; +- uint32_t free_blocks_count; +- uint32_t free_inodes_count; +- uint32_t first_data_block; +- uint32_t log_block_size; +- uint32_t dummy3[7]; +- uint8_t magic[2]; +- uint16_t state; +- uint32_t dummy5[8]; +- uint32_t feature_compat; +- uint32_t feature_incompat; +- uint32_t feature_ro_compat; +- uint8_t uuid[16]; +- uint8_t volume_name[16]; +-} PACKED; +- +-#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x00000004 +-#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x00000008 + #define EXT_SUPERBLOCK_OFFSET 0x400 + + int FAST_FUNC volume_id_probe_ext(struct volume_id *id /*,uint64_t off*/) +@@ -54,23 +34,27 @@ int FAST_FUNC volume_id_probe_ext(struct + if (es == NULL) + return -1; + +- if (es->magic[0] != 0123 || es->magic[1] != 0357) { ++ if (es->s_magic != cpu_to_le16(EXT2_SUPER_MAGIC)) { + dbg("ext: no magic found"); + return -1; + } + + // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM); + // volume_id_set_label_raw(id, es->volume_name, 16); +- volume_id_set_label_string(id, es->volume_name, 16); +- volume_id_set_uuid(id, es->uuid, UUID_DCE); ++ volume_id_set_label_string(id, (void*)es->s_volume_name, 16); ++ volume_id_set_uuid(id, es->s_uuid, UUID_DCE); + dbg("ext: label '%s' uuid '%s'", id->label, id->uuid); + + #if ENABLE_FEATURE_BLKID_TYPE +- if ((le32_to_cpu(es->feature_compat) & EXT3_FEATURE_COMPAT_HAS_JOURNAL) != 0) ++ if ((es->s_feature_ro_compat & cpu_to_le32(EXT4_FEATURE_RO_COMPAT_HUGE_FILE | EXT4_FEATURE_RO_COMPAT_DIR_NLINK)) ++ || (es->s_feature_incompat & cpu_to_le32(EXT4_FEATURE_INCOMPAT_EXTENTS | EXT4_FEATURE_INCOMPAT_64BIT)) ++ ) { ++ id->type = "ext4"; ++ } ++ else if (es->s_feature_compat & cpu_to_le32(EXT3_FEATURE_COMPAT_HAS_JOURNAL)) + id->type = "ext3"; + else + id->type = "ext2"; + #endif +- + return 0; + } |