bionic/libc/kernel/common/linux/ext2_fs.h

/****************************************************************************
 ****************************************************************************
 ***
 ***   This header was automatically generated from a Linux kernel header
 ***   of the same name, to make information necessary for userspace to
 ***   call into the kernel available to libc.  It contains only constants,
 ***   structures, and macros generated from the original header, and thus,
 ***   contains no copyrightable information.
 ***
 ****************************************************************************
 ****************************************************************************/
#ifndef _LINUX_EXT2_FS_H
#define _LINUX_EXT2_FS_H

#include <linux/types.h>

#undef EXT2FS_DEBUG

#define EXT2_PREALLOCATE
#define EXT2_DEFAULT_PREALLOC_BLOCKS 8

#define EXT2FS_DATE "95/08/09"
#define EXT2FS_VERSION "0.5b"

#ifdef EXT2FS_DEBUG
#define ext2_debug(f, a...) {   printk ("EXT2-fs DEBUG (%s, %d): %s:",   __FILE__, __LINE__, __FUNCTION__);   printk (f, ## a);   }
#else
#define ext2_debug(f, a...)  
#endif

#define EXT2_BAD_INO 1  
#define EXT2_ROOT_INO 2  
#define EXT2_BOOT_LOADER_INO 5  
#define EXT2_UNDEL_DIR_INO 6  

#define EXT2_GOOD_OLD_FIRST_INO 11

#define EXT2_SUPER_MAGIC 0xEF53

#define EXT2_SB(sb) (sb)

#define EXT2_LINK_MAX 32000

#define EXT2_MIN_BLOCK_SIZE 1024
#define EXT2_MAX_BLOCK_SIZE 4096
#define EXT2_MIN_BLOCK_LOG_SIZE 10
#define EXT2_BLOCK_SIZE(s) (EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size)
#define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32))
#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_MIN_FRAG_SIZE 1024
#define EXT2_MAX_FRAG_SIZE 4096
#define EXT2_MIN_FRAG_LOG_SIZE 10
#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))

struct ext2_group_desc
{
 __le32 bg_block_bitmap;
 __le32 bg_inode_bitmap;
 __le32 bg_inode_table;
 __le16 bg_free_blocks_count;
 __le16 bg_free_inodes_count;
 __le16 bg_used_dirs_count;
 __le16 bg_pad;
 __le32 bg_reserved[3];
};

#define EXT2_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group)
#define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
#define EXT2_INODES_PER_GROUP(s) ((s)->s_inodes_per_group)

#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)

#define EXT2_SECRM_FL 0x00000001  
#define EXT2_UNRM_FL 0x00000002  
#define EXT2_COMPR_FL 0x00000004  
#define EXT2_SYNC_FL 0x00000008  
#define EXT2_IMMUTABLE_FL 0x00000010  
#define EXT2_APPEND_FL 0x00000020  
#define EXT2_NODUMP_FL 0x00000040  
#define EXT2_NOATIME_FL 0x00000080  

#define EXT2_DIRTY_FL 0x00000100
#define EXT2_COMPRBLK_FL 0x00000200  
#define EXT2_NOCOMP_FL 0x00000400  
#define EXT2_ECOMPR_FL 0x00000800  

#define EXT2_BTREE_FL 0x00001000  
#define EXT2_INDEX_FL 0x00001000  
#define EXT2_IMAGIC_FL 0x00002000  
#define EXT2_JOURNAL_DATA_FL 0x00004000  
#define EXT2_NOTAIL_FL 0x00008000  
#define EXT2_DIRSYNC_FL 0x00010000  
#define EXT2_TOPDIR_FL 0x00020000  
#define EXT2_RESERVED_FL 0x80000000  

#define EXT2_FL_USER_VISIBLE 0x0003DFFF  
#define EXT2_FL_USER_MODIFIABLE 0x000380FF  

#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)

struct ext2_inode {
 __le16 i_mode;
 __le16 i_uid;
 __le32 i_size;
 __le32 i_atime;
 __le32 i_ctime;
 __le32 i_mtime;
 __le32 i_dtime;
 __le16 i_gid;
 __le16 i_links_count;
 __le32 i_blocks;
 __le32 i_flags;
 union {
 struct {
 __le32 l_i_reserved1;
 } linux1;
 struct {
 __le32 h_i_translator;
 } hurd1;
 struct {
 __le32 m_i_reserved1;
 } masix1;
 } osd1;
 __le32 i_block[EXT2_N_BLOCKS];
 __le32 i_generation;
 __le32 i_file_acl;
 __le32 i_dir_acl;
 __le32 i_faddr;
 union {
 struct {
 __u8 l_i_frag;
 __u8 l_i_fsize;
 __u16 i_pad1;
 __le16 l_i_uid_high;
 __le16 l_i_gid_high;
 __u32 l_i_reserved2;
 } linux2;
 struct {
 __u8 h_i_frag;
 __u8 h_i_fsize;
 __le16 h_i_mode_high;
 __le16 h_i_uid_high;
 __le16 h_i_gid_high;
 __le32 h_i_author;
 } hurd2;
 struct {
 __u8 m_i_frag;
 __u8 m_i_fsize;
 __u16 m_pad1;
 __u32 m_i_reserved2[2];
 } masix2;
 } osd2;
};

#define i_size_high i_dir_acl

#ifdef __linux__
#define i_reserved1 osd1.linux1.l_i_reserved1
#define i_frag osd2.linux2.l_i_frag
#define i_fsize osd2.linux2.l_i_fsize
#define i_uid_low i_uid
#define i_gid_low i_gid
#define i_uid_high osd2.linux2.l_i_uid_high
#define i_gid_high osd2.linux2.l_i_gid_high
#define i_reserved2 osd2.linux2.l_i_reserved2
#endif

#ifdef __hurd__
#define i_translator osd1.hurd1.h_i_translator
#define i_frag osd2.hurd2.h_i_frag;
#define i_fsize osd2.hurd2.h_i_fsize;
#define i_uid_high osd2.hurd2.h_i_uid_high
#define i_gid_high osd2.hurd2.h_i_gid_high
#define i_author osd2.hurd2.h_i_author
#endif

#ifdef __masix__
#define i_reserved1 osd1.masix1.m_i_reserved1
#define i_frag osd2.masix2.m_i_frag
#define i_fsize osd2.masix2.m_i_fsize
#define i_reserved2 osd2.masix2.m_i_reserved2
#endif

#define EXT2_VALID_FS 0x0001  
#define EXT2_ERROR_FS 0x0002  

#define EXT2_MOUNT_CHECK 0x000001  
#define EXT2_MOUNT_OLDALLOC 0x000002  
#define EXT2_MOUNT_GRPID 0x000004  
#define EXT2_MOUNT_DEBUG 0x000008  
#define EXT2_MOUNT_ERRORS_CONT 0x000010  
#define EXT2_MOUNT_ERRORS_RO 0x000020  
#define EXT2_MOUNT_ERRORS_PANIC 0x000040  
#define EXT2_MOUNT_MINIX_DF 0x000080  
#define EXT2_MOUNT_NOBH 0x000100  
#define EXT2_MOUNT_NO_UID32 0x000200  
#define EXT2_MOUNT_XATTR_USER 0x004000  
#define EXT2_MOUNT_POSIX_ACL 0x008000  
#define EXT2_MOUNT_XIP 0x010000  
#define EXT2_MOUNT_USRQUOTA 0x020000  
#define EXT2_MOUNT_GRPQUOTA 0x040000  

#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)

#define EXT2_DFL_MAX_MNT_COUNT 20  
#define EXT2_DFL_CHECKINTERVAL 0  

#define EXT2_ERRORS_CONTINUE 1  
#define EXT2_ERRORS_RO 2  
#define EXT2_ERRORS_PANIC 3  
#define EXT2_ERRORS_DEFAULT EXT2_ERRORS_CONTINUE

struct ext2_super_block {
 __le32 s_inodes_count;
 __le32 s_blocks_count;
 __le32 s_r_blocks_count;
 __le32 s_free_blocks_count;
 __le32 s_free_inodes_count;
 __le32 s_first_data_block;
 __le32 s_log_block_size;
 __le32 s_log_frag_size;
 __le32 s_blocks_per_group;
 __le32 s_frags_per_group;
 __le32 s_inodes_per_group;
 __le32 s_mtime;
 __le32 s_wtime;
 __le16 s_mnt_count;
 __le16 s_max_mnt_count;
 __le16 s_magic;
 __le16 s_state;
 __le16 s_errors;
 __le16 s_minor_rev_level;
 __le32 s_lastcheck;
 __le32 s_checkinterval;
 __le32 s_creator_os;
 __le32 s_rev_level;
 __le16 s_def_resuid;
 __le16 s_def_resgid;

 __le32 s_first_ino;
 __le16 s_inode_size;
 __le16 s_block_group_nr;
 __le32 s_feature_compat;
 __le32 s_feature_incompat;
 __le32 s_feature_ro_compat;
 __u8 s_uuid[16];
 char s_volume_name[16];
 char s_last_mounted[64];
 __le32 s_algorithm_usage_bitmap;

 __u8 s_prealloc_blocks;
 __u8 s_prealloc_dir_blocks;
 __u16 s_padding1;

 __u8 s_journal_uuid[16];
 __u32 s_journal_inum;
 __u32 s_journal_dev;
 __u32 s_last_orphan;
 __u32 s_hash_seed[4];
 __u8 s_def_hash_version;
 __u8 s_reserved_char_pad;
 __u16 s_reserved_word_pad;
 __le32 s_default_mount_opts;
 __le32 s_first_meta_bg;
 __u32 s_reserved[190];
};

#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

#define EXT2_GOOD_OLD_REV 0  
#define EXT2_DYNAMIC_REV 1  

#define EXT2_CURRENT_REV EXT2_GOOD_OLD_REV
#define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV

#define EXT2_GOOD_OLD_INODE_SIZE 128

#define EXT2_HAS_COMPAT_FEATURE(sb,mask)   ( EXT2_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) )
#define EXT2_HAS_RO_COMPAT_FEATURE(sb,mask)   ( EXT2_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) )
#define EXT2_HAS_INCOMPAT_FEATURE(sb,mask)   ( EXT2_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) )
#define EXT2_SET_COMPAT_FEATURE(sb,mask)   EXT2_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask)
#define EXT2_SET_RO_COMPAT_FEATURE(sb,mask)   EXT2_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask)
#define EXT2_SET_INCOMPAT_FEATURE(sb,mask)   EXT2_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask)
#define EXT2_CLEAR_COMPAT_FEATURE(sb,mask)   EXT2_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask)
#define EXT2_CLEAR_RO_COMPAT_FEATURE(sb,mask)   EXT2_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask)
#define EXT2_CLEAR_INCOMPAT_FEATURE(sb,mask)   EXT2_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(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_INO 0x0010
#define EXT2_FEATURE_COMPAT_DIR_INDEX 0x0020
#define EXT2_FEATURE_COMPAT_ANY 0xffffffff

#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
#define EXT2_FEATURE_RO_COMPAT_ANY 0xffffffff

#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 EXT2_FEATURE_INCOMPAT_ANY 0xffffffff

#define EXT2_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR
#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|   EXT2_FEATURE_INCOMPAT_META_BG)
#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_RO_COMPAT_UNSUPPORTED ~EXT2_FEATURE_RO_COMPAT_SUPP
#define EXT2_FEATURE_INCOMPAT_UNSUPPORTED ~EXT2_FEATURE_INCOMPAT_SUPP

#define EXT2_DEF_RESUID 0
#define EXT2_DEF_RESGID 0

#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

#define EXT2_NAME_LEN 255

struct ext2_dir_entry {
 __le32 inode;
 __le16 rec_len;
 __le16 name_len;
 char name[EXT2_NAME_LEN];
};

struct ext2_dir_entry_2 {
 __le32 inode;
 __le16 rec_len;
 __u8 name_len;
 __u8 file_type;
 char name[EXT2_NAME_LEN];
};

enum {
 EXT2_FT_UNKNOWN,
 EXT2_FT_REG_FILE,
 EXT2_FT_DIR,
 EXT2_FT_CHRDEV,
 EXT2_FT_BLKDEV,
 EXT2_FT_FIFO,
 EXT2_FT_SOCK,
 EXT2_FT_SYMLINK,
 EXT2_FT_MAX
};

#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