/*
- * linux/include/linux/ext3_fs.h
+ * linux/include/linux/ext4_fs.h
*
* Copyright (C) 1992, 1993, 1994, 1995
* Remy Card (card@masi.ibp.fr)
* Copyright (C) 1991, 1992 Linus Torvalds
*/
-#ifndef _LINUX_EXT3_FS_H
-#define _LINUX_EXT3_FS_H
+#ifndef _LINUX_EXT4_FS_H
+#define _LINUX_EXT4_FS_H
#include <linux/types.h>
+#include <linux/blkdev.h>
#include <linux/magic.h>
/*
*/
/*
- * Define EXT3FS_DEBUG to produce debug messages
+ * Define EXT4FS_DEBUG to produce debug messages
*/
-#undef EXT3FS_DEBUG
+#undef EXT4FS_DEBUG
/*
- * Define EXT3_RESERVATION to reserve data blocks for expanding files
+ * Define EXT4_RESERVATION to reserve data blocks for expanding files
*/
-#define EXT3_DEFAULT_RESERVE_BLOCKS 8
+#define EXT4_DEFAULT_RESERVE_BLOCKS 8
/*max window size: 1024(direct blocks) + 3([t,d]indirect blocks) */
-#define EXT3_MAX_RESERVE_BLOCKS 1027
-#define EXT3_RESERVE_WINDOW_NOT_ALLOCATED 0
+#define EXT4_MAX_RESERVE_BLOCKS 1027
+#define EXT4_RESERVE_WINDOW_NOT_ALLOCATED 0
/*
* Always enable hashed directories
*/
-#define CONFIG_EXT3_INDEX
+#define CONFIG_EXT4_INDEX
/*
* Debug code
*/
-#ifdef EXT3FS_DEBUG
-#define ext3_debug(f, a...) \
+#ifdef EXT4FS_DEBUG
+#define ext4_debug(f, a...) \
do { \
- printk (KERN_DEBUG "EXT3-fs DEBUG (%s, %d): %s:", \
+ printk (KERN_DEBUG "EXT4-fs DEBUG (%s, %d): %s:", \
__FILE__, __LINE__, __FUNCTION__); \
printk (KERN_DEBUG f, ## a); \
} while (0)
#else
-#define ext3_debug(f, a...) do {} while (0)
+#define ext4_debug(f, a...) do {} while (0)
#endif
/*
* Special inodes numbers
*/
-#define EXT3_BAD_INO 1 /* Bad blocks inode */
-#define EXT3_ROOT_INO 2 /* Root inode */
-#define EXT3_BOOT_LOADER_INO 5 /* Boot loader inode */
-#define EXT3_UNDEL_DIR_INO 6 /* Undelete directory inode */
-#define EXT3_RESIZE_INO 7 /* Reserved group descriptors inode */
-#define EXT3_JOURNAL_INO 8 /* Journal inode */
+#define EXT4_BAD_INO 1 /* Bad blocks inode */
+#define EXT4_ROOT_INO 2 /* Root inode */
+#define EXT4_BOOT_LOADER_INO 5 /* Boot loader inode */
+#define EXT4_UNDEL_DIR_INO 6 /* Undelete directory inode */
+#define EXT4_RESIZE_INO 7 /* Reserved group descriptors inode */
+#define EXT4_JOURNAL_INO 8 /* Journal inode */
-/* First non-reserved inode for old ext3 filesystems */
-#define EXT3_GOOD_OLD_FIRST_INO 11
+/* First non-reserved inode for old ext4 filesystems */
+#define EXT4_GOOD_OLD_FIRST_INO 11
/*
* Maximal count of links to a file
*/
-#define EXT3_LINK_MAX 32000
+#define EXT4_LINK_MAX 32000
/*
* Macro-instructions used to manage several block sizes
*/
-#define EXT3_MIN_BLOCK_SIZE 1024
-#define EXT3_MAX_BLOCK_SIZE 4096
-#define EXT3_MIN_BLOCK_LOG_SIZE 10
+#define EXT4_MIN_BLOCK_SIZE 1024
+#define EXT4_MAX_BLOCK_SIZE 4096
+#define EXT4_MIN_BLOCK_LOG_SIZE 10
#ifdef __KERNEL__
-# define EXT3_BLOCK_SIZE(s) ((s)->s_blocksize)
+# define EXT4_BLOCK_SIZE(s) ((s)->s_blocksize)
#else
-# define EXT3_BLOCK_SIZE(s) (EXT3_MIN_BLOCK_SIZE << (s)->s_log_block_size)
+# define EXT4_BLOCK_SIZE(s) (EXT4_MIN_BLOCK_SIZE << (s)->s_log_block_size)
#endif
-#define EXT3_ADDR_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (__u32))
+#define EXT4_ADDR_PER_BLOCK(s) (EXT4_BLOCK_SIZE(s) / sizeof (__u32))
#ifdef __KERNEL__
-# define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
+# define EXT4_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
#else
-# define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
+# define EXT4_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
#endif
#ifdef __KERNEL__
-#define EXT3_ADDR_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_addr_per_block_bits)
-#define EXT3_INODE_SIZE(s) (EXT3_SB(s)->s_inode_size)
-#define EXT3_FIRST_INO(s) (EXT3_SB(s)->s_first_ino)
+#define EXT4_ADDR_PER_BLOCK_BITS(s) (EXT4_SB(s)->s_addr_per_block_bits)
+#define EXT4_INODE_SIZE(s) (EXT4_SB(s)->s_inode_size)
+#define EXT4_FIRST_INO(s) (EXT4_SB(s)->s_first_ino)
#else
-#define EXT3_INODE_SIZE(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ? \
- EXT3_GOOD_OLD_INODE_SIZE : \
+#define EXT4_INODE_SIZE(s) (((s)->s_rev_level == EXT4_GOOD_OLD_REV) ? \
+ EXT4_GOOD_OLD_INODE_SIZE : \
(s)->s_inode_size)
-#define EXT3_FIRST_INO(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ? \
- EXT3_GOOD_OLD_FIRST_INO : \
+#define EXT4_FIRST_INO(s) (((s)->s_rev_level == EXT4_GOOD_OLD_REV) ? \
+ EXT4_GOOD_OLD_FIRST_INO : \
(s)->s_first_ino)
#endif
/*
* Macro-instructions used to manage fragments
*/
-#define EXT3_MIN_FRAG_SIZE 1024
-#define EXT3_MAX_FRAG_SIZE 4096
-#define EXT3_MIN_FRAG_LOG_SIZE 10
+#define EXT4_MIN_FRAG_SIZE 1024
+#define EXT4_MAX_FRAG_SIZE 4096
+#define EXT4_MIN_FRAG_LOG_SIZE 10
#ifdef __KERNEL__
-# define EXT3_FRAG_SIZE(s) (EXT3_SB(s)->s_frag_size)
-# define EXT3_FRAGS_PER_BLOCK(s) (EXT3_SB(s)->s_frags_per_block)
+# define EXT4_FRAG_SIZE(s) (EXT4_SB(s)->s_frag_size)
+# define EXT4_FRAGS_PER_BLOCK(s) (EXT4_SB(s)->s_frags_per_block)
#else
-# define EXT3_FRAG_SIZE(s) (EXT3_MIN_FRAG_SIZE << (s)->s_log_frag_size)
-# define EXT3_FRAGS_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / EXT3_FRAG_SIZE(s))
+# define EXT4_FRAG_SIZE(s) (EXT4_MIN_FRAG_SIZE << (s)->s_log_frag_size)
+# define EXT4_FRAGS_PER_BLOCK(s) (EXT4_BLOCK_SIZE(s) / EXT4_FRAG_SIZE(s))
#endif
/*
* Structure of a blocks group descriptor
*/
-struct ext3_group_desc
+struct ext4_group_desc
{
__le32 bg_block_bitmap; /* Blocks bitmap block */
__le32 bg_inode_bitmap; /* Inodes bitmap block */
__le16 bg_free_blocks_count; /* Free blocks count */
__le16 bg_free_inodes_count; /* Free inodes count */
__le16 bg_used_dirs_count; /* Directories count */
- __u16 bg_pad;
- __le32 bg_reserved[3];
+ __u16 bg_flags;
+ __u32 bg_reserved[3];
+ __le32 bg_block_bitmap_hi; /* Blocks bitmap block MSB */
+ __le32 bg_inode_bitmap_hi; /* Inodes bitmap block MSB */
+ __le32 bg_inode_table_hi; /* Inodes table block MSB */
};
+#ifdef __KERNEL__
+#include <linux/ext4_fs_i.h>
+#include <linux/ext4_fs_sb.h>
+#endif
/*
* Macro-instructions used to manage group descriptors
*/
+#define EXT4_MIN_DESC_SIZE 32
+#define EXT4_MIN_DESC_SIZE_64BIT 64
+#define EXT4_MAX_DESC_SIZE EXT4_MIN_BLOCK_SIZE
+#define EXT4_DESC_SIZE(s) (EXT4_SB(s)->s_desc_size)
#ifdef __KERNEL__
-# define EXT3_BLOCKS_PER_GROUP(s) (EXT3_SB(s)->s_blocks_per_group)
-# define EXT3_DESC_PER_BLOCK(s) (EXT3_SB(s)->s_desc_per_block)
-# define EXT3_INODES_PER_GROUP(s) (EXT3_SB(s)->s_inodes_per_group)
-# define EXT3_DESC_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_desc_per_block_bits)
+# define EXT4_BLOCKS_PER_GROUP(s) (EXT4_SB(s)->s_blocks_per_group)
+# define EXT4_DESC_PER_BLOCK(s) (EXT4_SB(s)->s_desc_per_block)
+# define EXT4_INODES_PER_GROUP(s) (EXT4_SB(s)->s_inodes_per_group)
+# define EXT4_DESC_PER_BLOCK_BITS(s) (EXT4_SB(s)->s_desc_per_block_bits)
#else
-# define EXT3_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group)
-# define EXT3_DESC_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (struct ext3_group_desc))
-# define EXT3_INODES_PER_GROUP(s) ((s)->s_inodes_per_group)
+# define EXT4_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group)
+# define EXT4_DESC_PER_BLOCK(s) (EXT4_BLOCK_SIZE(s) / EXT4_DESC_SIZE(s))
+# define EXT4_INODES_PER_GROUP(s) ((s)->s_inodes_per_group)
#endif
/*
* Constants relative to the data blocks
*/
-#define EXT3_NDIR_BLOCKS 12
-#define EXT3_IND_BLOCK EXT3_NDIR_BLOCKS
-#define EXT3_DIND_BLOCK (EXT3_IND_BLOCK + 1)
-#define EXT3_TIND_BLOCK (EXT3_DIND_BLOCK + 1)
-#define EXT3_N_BLOCKS (EXT3_TIND_BLOCK + 1)
+#define EXT4_NDIR_BLOCKS 12
+#define EXT4_IND_BLOCK EXT4_NDIR_BLOCKS
+#define EXT4_DIND_BLOCK (EXT4_IND_BLOCK + 1)
+#define EXT4_TIND_BLOCK (EXT4_DIND_BLOCK + 1)
+#define EXT4_N_BLOCKS (EXT4_TIND_BLOCK + 1)
/*
* Inode flags
*/
-#define EXT3_SECRM_FL 0x00000001 /* Secure deletion */
-#define EXT3_UNRM_FL 0x00000002 /* Undelete */
-#define EXT3_COMPR_FL 0x00000004 /* Compress file */
-#define EXT3_SYNC_FL 0x00000008 /* Synchronous updates */
-#define EXT3_IMMUTABLE_FL 0x00000010 /* Immutable file */
-#define EXT3_APPEND_FL 0x00000020 /* writes to file may only append */
-#define EXT3_NODUMP_FL 0x00000040 /* do not dump file */
-#define EXT3_NOATIME_FL 0x00000080 /* do not update atime */
+#define EXT4_SECRM_FL 0x00000001 /* Secure deletion */
+#define EXT4_UNRM_FL 0x00000002 /* Undelete */
+#define EXT4_COMPR_FL 0x00000004 /* Compress file */
+#define EXT4_SYNC_FL 0x00000008 /* Synchronous updates */
+#define EXT4_IMMUTABLE_FL 0x00000010 /* Immutable file */
+#define EXT4_APPEND_FL 0x00000020 /* writes to file may only append */
+#define EXT4_NODUMP_FL 0x00000040 /* do not dump file */
+#define EXT4_NOATIME_FL 0x00000080 /* do not update atime */
/* Reserved for compression usage... */
-#define EXT3_DIRTY_FL 0x00000100
-#define EXT3_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
-#define EXT3_NOCOMPR_FL 0x00000400 /* Don't compress */
-#define EXT3_ECOMPR_FL 0x00000800 /* Compression error */
+#define EXT4_DIRTY_FL 0x00000100
+#define EXT4_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
+#define EXT4_NOCOMPR_FL 0x00000400 /* Don't compress */
+#define EXT4_ECOMPR_FL 0x00000800 /* Compression error */
/* End compression flags --- maybe not all used */
-#define EXT3_INDEX_FL 0x00001000 /* hash-indexed directory */
-#define EXT3_IMAGIC_FL 0x00002000 /* AFS directory */
-#define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */
-#define EXT3_NOTAIL_FL 0x00008000 /* file tail should not be merged */
-#define EXT3_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
-#define EXT3_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
-#define EXT3_RESERVED_FL 0x80000000 /* reserved for ext3 lib */
+#define EXT4_INDEX_FL 0x00001000 /* hash-indexed directory */
+#define EXT4_IMAGIC_FL 0x00002000 /* AFS directory */
+#define EXT4_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */
+#define EXT4_NOTAIL_FL 0x00008000 /* file tail should not be merged */
+#define EXT4_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
+#define EXT4_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
+#define EXT4_RESERVED_FL 0x80000000 /* reserved for ext4 lib */
+#define EXT4_EXTENTS_FL 0x00080000 /* Inode uses extents */
-#define EXT3_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
-#define EXT3_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */
+#define EXT4_FL_USER_VISIBLE 0x000BDFFF /* User visible flags */
+#define EXT4_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */
/*
* Inode dynamic state flags
*/
-#define EXT3_STATE_JDATA 0x00000001 /* journaled data exists */
-#define EXT3_STATE_NEW 0x00000002 /* inode is newly created */
-#define EXT3_STATE_XATTR 0x00000004 /* has in-inode xattrs */
+#define EXT4_STATE_JDATA 0x00000001 /* journaled data exists */
+#define EXT4_STATE_NEW 0x00000002 /* inode is newly created */
+#define EXT4_STATE_XATTR 0x00000004 /* has in-inode xattrs */
/* Used to pass group descriptor data when online resize is done */
-struct ext3_new_group_input {
+struct ext4_new_group_input {
__u32 group; /* Group number for this data */
- __u32 block_bitmap; /* Absolute block number of block bitmap */
- __u32 inode_bitmap; /* Absolute block number of inode bitmap */
- __u32 inode_table; /* Absolute block number of inode table start */
+ __u64 block_bitmap; /* Absolute block number of block bitmap */
+ __u64 inode_bitmap; /* Absolute block number of inode bitmap */
+ __u64 inode_table; /* Absolute block number of inode table start */
__u32 blocks_count; /* Total number of blocks in this group */
__u16 reserved_blocks; /* Number of reserved blocks in this group */
__u16 unused;
};
-/* The struct ext3_new_group_input in kernel space, with free_blocks_count */
-struct ext3_new_group_data {
+/* The struct ext4_new_group_input in kernel space, with free_blocks_count */
+struct ext4_new_group_data {
__u32 group;
- __u32 block_bitmap;
- __u32 inode_bitmap;
- __u32 inode_table;
+ __u64 block_bitmap;
+ __u64 inode_bitmap;
+ __u64 inode_table;
__u32 blocks_count;
__u16 reserved_blocks;
__u16 unused;
/*
* ioctl commands
*/
-#define EXT3_IOC_GETFLAGS FS_IOC_GETFLAGS
-#define EXT3_IOC_SETFLAGS FS_IOC_SETFLAGS
-#define EXT3_IOC_GETVERSION _IOR('f', 3, long)
-#define EXT3_IOC_SETVERSION _IOW('f', 4, long)
-#define EXT3_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long)
-#define EXT3_IOC_GROUP_ADD _IOW('f', 8,struct ext3_new_group_input)
-#define EXT3_IOC_GETVERSION_OLD FS_IOC_GETVERSION
-#define EXT3_IOC_SETVERSION_OLD FS_IOC_SETVERSION
+#define EXT4_IOC_GETFLAGS FS_IOC_GETFLAGS
+#define EXT4_IOC_SETFLAGS FS_IOC_SETFLAGS
+#define EXT4_IOC_GETVERSION _IOR('f', 3, long)
+#define EXT4_IOC_SETVERSION _IOW('f', 4, long)
+#define EXT4_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long)
+#define EXT4_IOC_GROUP_ADD _IOW('f', 8,struct ext4_new_group_input)
+#define EXT4_IOC_GETVERSION_OLD FS_IOC_GETVERSION
+#define EXT4_IOC_SETVERSION_OLD FS_IOC_SETVERSION
#ifdef CONFIG_JBD_DEBUG
-#define EXT3_IOC_WAIT_FOR_READONLY _IOR('f', 99, long)
+#define EXT4_IOC_WAIT_FOR_READONLY _IOR('f', 99, long)
#endif
-#define EXT3_IOC_GETRSVSZ _IOR('f', 5, long)
-#define EXT3_IOC_SETRSVSZ _IOW('f', 6, long)
+#define EXT4_IOC_GETRSVSZ _IOR('f', 5, long)
+#define EXT4_IOC_SETRSVSZ _IOW('f', 6, long)
/*
* ioctl commands in 32 bit emulation
*/
-#define EXT3_IOC32_GETFLAGS FS_IOC32_GETFLAGS
-#define EXT3_IOC32_SETFLAGS FS_IOC32_SETFLAGS
-#define EXT3_IOC32_GETVERSION _IOR('f', 3, int)
-#define EXT3_IOC32_SETVERSION _IOW('f', 4, int)
-#define EXT3_IOC32_GETRSVSZ _IOR('f', 5, int)
-#define EXT3_IOC32_SETRSVSZ _IOW('f', 6, int)
-#define EXT3_IOC32_GROUP_EXTEND _IOW('f', 7, unsigned int)
+#define EXT4_IOC32_GETFLAGS FS_IOC32_GETFLAGS
+#define EXT4_IOC32_SETFLAGS FS_IOC32_SETFLAGS
+#define EXT4_IOC32_GETVERSION _IOR('f', 3, int)
+#define EXT4_IOC32_SETVERSION _IOW('f', 4, int)
+#define EXT4_IOC32_GETRSVSZ _IOR('f', 5, int)
+#define EXT4_IOC32_SETRSVSZ _IOW('f', 6, int)
+#define EXT4_IOC32_GROUP_EXTEND _IOW('f', 7, unsigned int)
#ifdef CONFIG_JBD_DEBUG
-#define EXT3_IOC32_WAIT_FOR_READONLY _IOR('f', 99, int)
+#define EXT4_IOC32_WAIT_FOR_READONLY _IOR('f', 99, int)
#endif
-#define EXT3_IOC32_GETVERSION_OLD FS_IOC32_GETVERSION
-#define EXT3_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION
+#define EXT4_IOC32_GETVERSION_OLD FS_IOC32_GETVERSION
+#define EXT4_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION
/*
* Mount options
*/
-struct ext3_mount_options {
+struct ext4_mount_options {
unsigned long s_mount_opt;
uid_t s_resuid;
gid_t s_resgid;
/*
* Structure of an inode on the disk
*/
-struct ext3_inode {
+struct ext4_inode {
__le16 i_mode; /* File mode */
__le16 i_uid; /* Low 16 bits of Owner Uid */
__le32 i_size; /* Size in bytes */
__u32 m_i_reserved1;
} masix1;
} osd1; /* OS dependent 1 */
- __le32 i_block[EXT3_N_BLOCKS];/* Pointers to blocks */
+ __le32 i_block[EXT4_N_BLOCKS];/* Pointers to blocks */
__le32 i_generation; /* File version (for NFS) */
__le32 i_file_acl; /* File ACL */
__le32 i_dir_acl; /* Directory ACL */
struct {
__u8 l_i_frag; /* Fragment number */
__u8 l_i_fsize; /* Fragment size */
- __u16 i_pad1;
+ __le16 l_i_file_acl_high;
__le16 l_i_uid_high; /* these 2 fields */
__le16 l_i_gid_high; /* were reserved2[0] */
__u32 l_i_reserved2;
struct {
__u8 m_i_frag; /* Fragment number */
__u8 m_i_fsize; /* Fragment size */
- __u16 m_pad1;
+ __le16 m_i_file_acl_high;
__u32 m_i_reserved2[2];
} masix2;
} osd2; /* OS dependent 2 */
#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_file_acl_high osd2.linux2.l_i_file_acl_high
#define i_uid_low i_uid
#define i_gid_low i_gid
#define i_uid_high osd2.linux2.l_i_uid_high
#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_file_acl_high osd2.masix2.m_i_file_acl_high
#define i_reserved2 osd2.masix2.m_i_reserved2
#endif /* defined(__KERNEL__) || defined(__linux__) */
/*
* File system states
*/
-#define EXT3_VALID_FS 0x0001 /* Unmounted cleanly */
-#define EXT3_ERROR_FS 0x0002 /* Errors detected */
-#define EXT3_ORPHAN_FS 0x0004 /* Orphans being recovered */
+#define EXT4_VALID_FS 0x0001 /* Unmounted cleanly */
+#define EXT4_ERROR_FS 0x0002 /* Errors detected */
+#define EXT4_ORPHAN_FS 0x0004 /* Orphans being recovered */
/*
* Mount flags
*/
-#define EXT3_MOUNT_CHECK 0x00001 /* Do mount-time checks */
-#define EXT3_MOUNT_OLDALLOC 0x00002 /* Don't use the new Orlov allocator */
-#define EXT3_MOUNT_GRPID 0x00004 /* Create files with directory's group */
-#define EXT3_MOUNT_DEBUG 0x00008 /* Some debugging messages */
-#define EXT3_MOUNT_ERRORS_CONT 0x00010 /* Continue on errors */
-#define EXT3_MOUNT_ERRORS_RO 0x00020 /* Remount fs ro on errors */
-#define EXT3_MOUNT_ERRORS_PANIC 0x00040 /* Panic on errors */
-#define EXT3_MOUNT_MINIX_DF 0x00080 /* Mimics the Minix statfs */
-#define EXT3_MOUNT_NOLOAD 0x00100 /* Don't use existing journal*/
-#define EXT3_MOUNT_ABORT 0x00200 /* Fatal error detected */
-#define EXT3_MOUNT_DATA_FLAGS 0x00C00 /* Mode for data writes: */
-#define EXT3_MOUNT_JOURNAL_DATA 0x00400 /* Write data to journal */
-#define EXT3_MOUNT_ORDERED_DATA 0x00800 /* Flush data before commit */
-#define EXT3_MOUNT_WRITEBACK_DATA 0x00C00 /* No data ordering */
-#define EXT3_MOUNT_UPDATE_JOURNAL 0x01000 /* Update the journal format */
-#define EXT3_MOUNT_NO_UID32 0x02000 /* Disable 32-bit UIDs */
-#define EXT3_MOUNT_XATTR_USER 0x04000 /* Extended user attributes */
-#define EXT3_MOUNT_POSIX_ACL 0x08000 /* POSIX Access Control Lists */
-#define EXT3_MOUNT_RESERVATION 0x10000 /* Preallocation */
-#define EXT3_MOUNT_BARRIER 0x20000 /* Use block barriers */
-#define EXT3_MOUNT_NOBH 0x40000 /* No bufferheads */
-#define EXT3_MOUNT_QUOTA 0x80000 /* Some quota option set */
-#define EXT3_MOUNT_USRQUOTA 0x100000 /* "old" user quota */
-#define EXT3_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */
-
-/* Compatibility, for having both ext2_fs.h and ext3_fs.h included at once */
+#define EXT4_MOUNT_CHECK 0x00001 /* Do mount-time checks */
+#define EXT4_MOUNT_OLDALLOC 0x00002 /* Don't use the new Orlov allocator */
+#define EXT4_MOUNT_GRPID 0x00004 /* Create files with directory's group */
+#define EXT4_MOUNT_DEBUG 0x00008 /* Some debugging messages */
+#define EXT4_MOUNT_ERRORS_CONT 0x00010 /* Continue on errors */
+#define EXT4_MOUNT_ERRORS_RO 0x00020 /* Remount fs ro on errors */
+#define EXT4_MOUNT_ERRORS_PANIC 0x00040 /* Panic on errors */
+#define EXT4_MOUNT_MINIX_DF 0x00080 /* Mimics the Minix statfs */
+#define EXT4_MOUNT_NOLOAD 0x00100 /* Don't use existing journal*/
+#define EXT4_MOUNT_ABORT 0x00200 /* Fatal error detected */
+#define EXT4_MOUNT_DATA_FLAGS 0x00C00 /* Mode for data writes: */
+#define EXT4_MOUNT_JOURNAL_DATA 0x00400 /* Write data to journal */
+#define EXT4_MOUNT_ORDERED_DATA 0x00800 /* Flush data before commit */
+#define EXT4_MOUNT_WRITEBACK_DATA 0x00C00 /* No data ordering */
+#define EXT4_MOUNT_UPDATE_JOURNAL 0x01000 /* Update the journal format */
+#define EXT4_MOUNT_NO_UID32 0x02000 /* Disable 32-bit UIDs */
+#define EXT4_MOUNT_XATTR_USER 0x04000 /* Extended user attributes */
+#define EXT4_MOUNT_POSIX_ACL 0x08000 /* POSIX Access Control Lists */
+#define EXT4_MOUNT_RESERVATION 0x10000 /* Preallocation */
+#define EXT4_MOUNT_BARRIER 0x20000 /* Use block barriers */
+#define EXT4_MOUNT_NOBH 0x40000 /* No bufferheads */
+#define EXT4_MOUNT_QUOTA 0x80000 /* Some quota option set */
+#define EXT4_MOUNT_USRQUOTA 0x100000 /* "old" user quota */
+#define EXT4_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */
+#define EXT4_MOUNT_EXTENTS 0x400000 /* Extents support */
+
+/* Compatibility, for having both ext2_fs.h and ext4_fs.h included at once */
#ifndef _LINUX_EXT2_FS_H
-#define clear_opt(o, opt) o &= ~EXT3_MOUNT_##opt
-#define set_opt(o, opt) o |= EXT3_MOUNT_##opt
-#define test_opt(sb, opt) (EXT3_SB(sb)->s_mount_opt & \
- EXT3_MOUNT_##opt)
+#define clear_opt(o, opt) o &= ~EXT4_MOUNT_##opt
+#define set_opt(o, opt) o |= EXT4_MOUNT_##opt
+#define test_opt(sb, opt) (EXT4_SB(sb)->s_mount_opt & \
+ EXT4_MOUNT_##opt)
#else
-#define EXT2_MOUNT_NOLOAD EXT3_MOUNT_NOLOAD
-#define EXT2_MOUNT_ABORT EXT3_MOUNT_ABORT
-#define EXT2_MOUNT_DATA_FLAGS EXT3_MOUNT_DATA_FLAGS
+#define EXT2_MOUNT_NOLOAD EXT4_MOUNT_NOLOAD
+#define EXT2_MOUNT_ABORT EXT4_MOUNT_ABORT
+#define EXT2_MOUNT_DATA_FLAGS EXT4_MOUNT_DATA_FLAGS
#endif
-#define ext3_set_bit ext2_set_bit
-#define ext3_set_bit_atomic ext2_set_bit_atomic
-#define ext3_clear_bit ext2_clear_bit
-#define ext3_clear_bit_atomic ext2_clear_bit_atomic
-#define ext3_test_bit ext2_test_bit
-#define ext3_find_first_zero_bit ext2_find_first_zero_bit
-#define ext3_find_next_zero_bit ext2_find_next_zero_bit
+#define ext4_set_bit ext2_set_bit
+#define ext4_set_bit_atomic ext2_set_bit_atomic
+#define ext4_clear_bit ext2_clear_bit
+#define ext4_clear_bit_atomic ext2_clear_bit_atomic
+#define ext4_test_bit ext2_test_bit
+#define ext4_find_first_zero_bit ext2_find_first_zero_bit
+#define ext4_find_next_zero_bit ext2_find_next_zero_bit
/*
* Maximal mount counts between two filesystem checks
*/
-#define EXT3_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */
-#define EXT3_DFL_CHECKINTERVAL 0 /* Don't use interval check */
+#define EXT4_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */
+#define EXT4_DFL_CHECKINTERVAL 0 /* Don't use interval check */
/*
* Behaviour when detecting errors
*/
-#define EXT3_ERRORS_CONTINUE 1 /* Continue execution */
-#define EXT3_ERRORS_RO 2 /* Remount fs read-only */
-#define EXT3_ERRORS_PANIC 3 /* Panic */
-#define EXT3_ERRORS_DEFAULT EXT3_ERRORS_CONTINUE
+#define EXT4_ERRORS_CONTINUE 1 /* Continue execution */
+#define EXT4_ERRORS_RO 2 /* Remount fs read-only */
+#define EXT4_ERRORS_PANIC 3 /* Panic */
+#define EXT4_ERRORS_DEFAULT EXT4_ERRORS_CONTINUE
/*
* Structure of the super block
*/
-struct ext3_super_block {
+struct ext4_super_block {
/*00*/ __le32 s_inodes_count; /* Inodes count */
__le32 s_blocks_count; /* Blocks count */
__le32 s_r_blocks_count; /* Reserved blocks count */
/*50*/ __le16 s_def_resuid; /* Default uid for reserved blocks */
__le16 s_def_resgid; /* Default gid for reserved blocks */
/*
- * These fields are for EXT3_DYNAMIC_REV superblocks only.
+ * These fields are for EXT4_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
* things it doesn't understand...
*/
__le32 s_first_ino; /* First non-reserved inode */
- __le16 s_inode_size; /* size of inode structure */
+ __le16 s_inode_size; /* size of inode structure */
__le16 s_block_group_nr; /* block group # of this superblock */
__le32 s_feature_compat; /* compatible feature set */
/*60*/ __le32 s_feature_incompat; /* incompatible feature set */
/*C8*/ __le32 s_algorithm_usage_bitmap; /* For compression */
/*
* Performance hints. Directory preallocation should only
- * happen if the EXT3_FEATURE_COMPAT_DIR_PREALLOC flag is on.
+ * happen if the EXT4_FEATURE_COMPAT_DIR_PREALLOC flag is on.
*/
__u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
__u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
__le16 s_reserved_gdt_blocks; /* Per group desc for online growth */
/*
- * Journaling support valid if EXT3_FEATURE_COMPAT_HAS_JOURNAL set.
+ * Journaling support valid if EXT4_FEATURE_COMPAT_HAS_JOURNAL set.
*/
/*D0*/ __u8 s_journal_uuid[16]; /* uuid of journal superblock */
/*E0*/ __le32 s_journal_inum; /* inode number of journal file */
__le32 s_hash_seed[4]; /* HTREE hash seed */
__u8 s_def_hash_version; /* Default hash version to use */
__u8 s_reserved_char_pad;
- __u16 s_reserved_word_pad;
- __le32 s_default_mount_opts;
+ __le16 s_desc_size; /* size of group descriptor */
+/*100*/ __le32 s_default_mount_opts;
__le32 s_first_meta_bg; /* First metablock block group */
- __u32 s_reserved[190]; /* Padding to the end of the block */
+ __le32 s_mkfs_time; /* When the filesystem was created */
+ __le32 s_jnl_blocks[17]; /* Backup of the journal inode */
+ /* 64bit support valid if EXT4_FEATURE_COMPAT_64BIT */
+/*150*/ __le32 s_blocks_count_hi; /* Blocks count */
+ __le32 s_r_blocks_count_hi; /* Reserved blocks count */
+ __le32 s_free_blocks_count_hi; /* Free blocks count */
+ __u32 s_reserved[169]; /* Padding to the end of the block */
};
#ifdef __KERNEL__
-#include <linux/ext3_fs_i.h>
-#include <linux/ext3_fs_sb.h>
-static inline struct ext3_sb_info * EXT3_SB(struct super_block *sb)
+static inline struct ext4_sb_info * EXT4_SB(struct super_block *sb)
{
return sb->s_fs_info;
}
-static inline struct ext3_inode_info *EXT3_I(struct inode *inode)
+static inline struct ext4_inode_info *EXT4_I(struct inode *inode)
{
- return container_of(inode, struct ext3_inode_info, vfs_inode);
+ return container_of(inode, struct ext4_inode_info, vfs_inode);
}
-static inline int ext3_valid_inum(struct super_block *sb, unsigned long ino)
+static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
{
- return ino == EXT3_ROOT_INO ||
- ino == EXT3_JOURNAL_INO ||
- ino == EXT3_RESIZE_INO ||
- (ino >= EXT3_FIRST_INO(sb) &&
- ino <= le32_to_cpu(EXT3_SB(sb)->s_es->s_inodes_count));
+ return ino == EXT4_ROOT_INO ||
+ ino == EXT4_JOURNAL_INO ||
+ ino == EXT4_RESIZE_INO ||
+ (ino >= EXT4_FIRST_INO(sb) &&
+ ino <= le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count));
}
#else
-/* Assume that user mode programs are passing in an ext3fs superblock, not
+/* Assume that user mode programs are passing in an ext4fs superblock, not
* a kernel struct super_block. This will allow us to call the feature-test
* macros from user land. */
-#define EXT3_SB(sb) (sb)
+#define EXT4_SB(sb) (sb)
#endif
-#define NEXT_ORPHAN(inode) EXT3_I(inode)->i_dtime
+#define NEXT_ORPHAN(inode) EXT4_I(inode)->i_dtime
/*
* Codes for operating systems
*/
-#define EXT3_OS_LINUX 0
-#define EXT3_OS_HURD 1
-#define EXT3_OS_MASIX 2
-#define EXT3_OS_FREEBSD 3
-#define EXT3_OS_LITES 4
+#define EXT4_OS_LINUX 0
+#define EXT4_OS_HURD 1
+#define EXT4_OS_MASIX 2
+#define EXT4_OS_FREEBSD 3
+#define EXT4_OS_LITES 4
/*
* Revision levels
*/
-#define EXT3_GOOD_OLD_REV 0 /* The good old (original) format */
-#define EXT3_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */
+#define EXT4_GOOD_OLD_REV 0 /* The good old (original) format */
+#define EXT4_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */
-#define EXT3_CURRENT_REV EXT3_GOOD_OLD_REV
-#define EXT3_MAX_SUPP_REV EXT3_DYNAMIC_REV
+#define EXT4_CURRENT_REV EXT4_GOOD_OLD_REV
+#define EXT4_MAX_SUPP_REV EXT4_DYNAMIC_REV
-#define EXT3_GOOD_OLD_INODE_SIZE 128
+#define EXT4_GOOD_OLD_INODE_SIZE 128
/*
* Feature set definitions
*/
-#define EXT3_HAS_COMPAT_FEATURE(sb,mask) \
- ( EXT3_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) )
-#define EXT3_HAS_RO_COMPAT_FEATURE(sb,mask) \
- ( EXT3_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) )
-#define EXT3_HAS_INCOMPAT_FEATURE(sb,mask) \
- ( EXT3_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) )
-#define EXT3_SET_COMPAT_FEATURE(sb,mask) \
- EXT3_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask)
-#define EXT3_SET_RO_COMPAT_FEATURE(sb,mask) \
- EXT3_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask)
-#define EXT3_SET_INCOMPAT_FEATURE(sb,mask) \
- EXT3_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask)
-#define EXT3_CLEAR_COMPAT_FEATURE(sb,mask) \
- EXT3_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask)
-#define EXT3_CLEAR_RO_COMPAT_FEATURE(sb,mask) \
- EXT3_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask)
-#define EXT3_CLEAR_INCOMPAT_FEATURE(sb,mask) \
- EXT3_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask)
-
-#define EXT3_FEATURE_COMPAT_DIR_PREALLOC 0x0001
-#define EXT3_FEATURE_COMPAT_IMAGIC_INODES 0x0002
-#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
-#define EXT3_FEATURE_COMPAT_EXT_ATTR 0x0008
-#define EXT3_FEATURE_COMPAT_RESIZE_INODE 0x0010
-#define EXT3_FEATURE_COMPAT_DIR_INDEX 0x0020
-
-#define EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
-#define EXT3_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
-#define EXT3_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
-
-#define EXT3_FEATURE_INCOMPAT_COMPRESSION 0x0001
-#define EXT3_FEATURE_INCOMPAT_FILETYPE 0x0002
-#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */
-#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */
-#define EXT3_FEATURE_INCOMPAT_META_BG 0x0010
-
-#define EXT3_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR
-#define EXT3_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_FILETYPE| \
- EXT3_FEATURE_INCOMPAT_RECOVER| \
- EXT3_FEATURE_INCOMPAT_META_BG)
-#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER| \
- EXT3_FEATURE_RO_COMPAT_LARGE_FILE| \
- EXT3_FEATURE_RO_COMPAT_BTREE_DIR)
+#define EXT4_HAS_COMPAT_FEATURE(sb,mask) \
+ ( EXT4_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) )
+#define EXT4_HAS_RO_COMPAT_FEATURE(sb,mask) \
+ ( EXT4_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) )
+#define EXT4_HAS_INCOMPAT_FEATURE(sb,mask) \
+ ( EXT4_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) )
+#define EXT4_SET_COMPAT_FEATURE(sb,mask) \
+ EXT4_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask)
+#define EXT4_SET_RO_COMPAT_FEATURE(sb,mask) \
+ EXT4_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask)
+#define EXT4_SET_INCOMPAT_FEATURE(sb,mask) \
+ EXT4_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask)
+#define EXT4_CLEAR_COMPAT_FEATURE(sb,mask) \
+ EXT4_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask)
+#define EXT4_CLEAR_RO_COMPAT_FEATURE(sb,mask) \
+ EXT4_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask)
+#define EXT4_CLEAR_INCOMPAT_FEATURE(sb,mask) \
+ EXT4_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask)
+
+#define EXT4_FEATURE_COMPAT_DIR_PREALLOC 0x0001
+#define EXT4_FEATURE_COMPAT_IMAGIC_INODES 0x0002
+#define EXT4_FEATURE_COMPAT_HAS_JOURNAL 0x0004
+#define EXT4_FEATURE_COMPAT_EXT_ATTR 0x0008
+#define EXT4_FEATURE_COMPAT_RESIZE_INODE 0x0010
+#define EXT4_FEATURE_COMPAT_DIR_INDEX 0x0020
+
+#define EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
+#define EXT4_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
+#define EXT4_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
+
+#define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001
+#define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002
+#define EXT4_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */
+#define EXT4_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */
+#define EXT4_FEATURE_INCOMPAT_META_BG 0x0010
+#define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040 /* extents support */
+#define EXT4_FEATURE_INCOMPAT_64BIT 0x0080
+
+#define EXT4_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR
+#define EXT4_FEATURE_INCOMPAT_SUPP (EXT4_FEATURE_INCOMPAT_FILETYPE| \
+ EXT4_FEATURE_INCOMPAT_RECOVER| \
+ EXT4_FEATURE_INCOMPAT_META_BG| \
+ EXT4_FEATURE_INCOMPAT_EXTENTS| \
+ EXT4_FEATURE_INCOMPAT_64BIT)
+#define EXT4_FEATURE_RO_COMPAT_SUPP (EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER| \
+ EXT4_FEATURE_RO_COMPAT_LARGE_FILE| \
+ EXT4_FEATURE_RO_COMPAT_BTREE_DIR)
/*
* Default values for user and/or group using reserved blocks
*/
-#define EXT3_DEF_RESUID 0
-#define EXT3_DEF_RESGID 0
+#define EXT4_DEF_RESUID 0
+#define EXT4_DEF_RESGID 0
/*
* Default mount options
*/
-#define EXT3_DEFM_DEBUG 0x0001
-#define EXT3_DEFM_BSDGROUPS 0x0002
-#define EXT3_DEFM_XATTR_USER 0x0004
-#define EXT3_DEFM_ACL 0x0008
-#define EXT3_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 EXT4_DEFM_DEBUG 0x0001
+#define EXT4_DEFM_BSDGROUPS 0x0002
+#define EXT4_DEFM_XATTR_USER 0x0004
+#define EXT4_DEFM_ACL 0x0008
+#define EXT4_DEFM_UID16 0x0010
+#define EXT4_DEFM_JMODE 0x0060
+#define EXT4_DEFM_JMODE_DATA 0x0020
+#define EXT4_DEFM_JMODE_ORDERED 0x0040
+#define EXT4_DEFM_JMODE_WBACK 0x0060
/*
* Structure of a directory entry
*/
-#define EXT3_NAME_LEN 255
+#define EXT4_NAME_LEN 255
-struct ext3_dir_entry {
+struct ext4_dir_entry {
__le32 inode; /* Inode number */
__le16 rec_len; /* Directory entry length */
__le16 name_len; /* Name length */
- char name[EXT3_NAME_LEN]; /* File name */
+ char name[EXT4_NAME_LEN]; /* File name */
};
/*
- * The new version of the directory entry. Since EXT3 structures are
+ * The new version of the directory entry. Since EXT4 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 ext3_dir_entry_2 {
+struct ext4_dir_entry_2 {
__le32 inode; /* Inode number */
__le16 rec_len; /* Directory entry length */
__u8 name_len; /* Name length */
__u8 file_type;
- char name[EXT3_NAME_LEN]; /* File name */
+ char name[EXT4_NAME_LEN]; /* File name */
};
/*
- * Ext3 directory file types. Only the low 3 bits are used. The
+ * Ext4 directory file types. Only the low 3 bits are used. The
* other bits are reserved for now.
*/
-#define EXT3_FT_UNKNOWN 0
-#define EXT3_FT_REG_FILE 1
-#define EXT3_FT_DIR 2
-#define EXT3_FT_CHRDEV 3
-#define EXT3_FT_BLKDEV 4
-#define EXT3_FT_FIFO 5
-#define EXT3_FT_SOCK 6
-#define EXT3_FT_SYMLINK 7
+#define EXT4_FT_UNKNOWN 0
+#define EXT4_FT_REG_FILE 1
+#define EXT4_FT_DIR 2
+#define EXT4_FT_CHRDEV 3
+#define EXT4_FT_BLKDEV 4
+#define EXT4_FT_FIFO 5
+#define EXT4_FT_SOCK 6
+#define EXT4_FT_SYMLINK 7
-#define EXT3_FT_MAX 8
+#define EXT4_FT_MAX 8
/*
- * EXT3_DIR_PAD defines the directory entries boundaries
+ * EXT4_DIR_PAD defines the directory entries boundaries
*
* NOTE: It must be a multiple of 4
*/
-#define EXT3_DIR_PAD 4
-#define EXT3_DIR_ROUND (EXT3_DIR_PAD - 1)
-#define EXT3_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT3_DIR_ROUND) & \
- ~EXT3_DIR_ROUND)
+#define EXT4_DIR_PAD 4
+#define EXT4_DIR_ROUND (EXT4_DIR_PAD - 1)
+#define EXT4_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT4_DIR_ROUND) & \
+ ~EXT4_DIR_ROUND)
/*
* Hash Tree Directory indexing
* (c) Daniel Phillips, 2001
*/
-#ifdef CONFIG_EXT3_INDEX
- #define is_dx(dir) (EXT3_HAS_COMPAT_FEATURE(dir->i_sb, \
- EXT3_FEATURE_COMPAT_DIR_INDEX) && \
- (EXT3_I(dir)->i_flags & EXT3_INDEX_FL))
-#define EXT3_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT3_LINK_MAX)
-#define EXT3_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1)
+#ifdef CONFIG_EXT4_INDEX
+ #define is_dx(dir) (EXT4_HAS_COMPAT_FEATURE(dir->i_sb, \
+ EXT4_FEATURE_COMPAT_DIR_INDEX) && \
+ (EXT4_I(dir)->i_flags & EXT4_INDEX_FL))
+#define EXT4_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT4_LINK_MAX)
+#define EXT4_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1)
#else
#define is_dx(dir) 0
-#define EXT3_DIR_LINK_MAX(dir) ((dir)->i_nlink >= EXT3_LINK_MAX)
-#define EXT3_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2)
+#define EXT4_DIR_LINK_MAX(dir) ((dir)->i_nlink >= EXT4_LINK_MAX)
+#define EXT4_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2)
#endif
/* Legal values for the dx_root hash_version field: */
u32 *seed;
};
-#define EXT3_HTREE_EOF 0x7fffffff
+#define EXT4_HTREE_EOF 0x7fffffff
/*
- * Control parameters used by ext3_htree_next_block
+ * Control parameters used by ext4_htree_next_block
*/
#define HASH_NB_ALWAYS 1
/*
* Describe an inode's exact location on disk and in memory
*/
-struct ext3_iloc
+struct ext4_iloc
{
struct buffer_head *bh;
unsigned long offset;
unsigned long block_group;
};
-static inline struct ext3_inode *ext3_raw_inode(struct ext3_iloc *iloc)
+static inline struct ext4_inode *ext4_raw_inode(struct ext4_iloc *iloc)
{
- return (struct ext3_inode *) (iloc->bh->b_data + iloc->offset);
+ return (struct ext4_inode *) (iloc->bh->b_data + iloc->offset);
}
/*
};
/* calculate the first block number of the group */
-static inline ext3_fsblk_t
-ext3_group_first_block_no(struct super_block *sb, unsigned long group_no)
+static inline ext4_fsblk_t
+ext4_group_first_block_no(struct super_block *sb, unsigned long group_no)
{
- return group_no * (ext3_fsblk_t)EXT3_BLOCKS_PER_GROUP(sb) +
- le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block);
+ return group_no * (ext4_fsblk_t)EXT4_BLOCKS_PER_GROUP(sb) +
+ le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block);
}
/*
*/
#define ERR_BAD_DX_DIR -75000
+void ext4_get_group_no_and_offset(struct super_block *sb, ext4_fsblk_t blocknr,
+ unsigned long *blockgrpp, ext4_grpblk_t *offsetp);
+
/*
* Function prototypes
*/
/*
* Ok, these declarations are also in <linux/kernel.h> but none of the
- * ext3 source programs needs to include it so they are duplicated here.
+ * ext4 source programs needs to include it so they are duplicated here.
*/
# define NORET_TYPE /**/
# define ATTRIB_NORET __attribute__((noreturn))
# define NORET_AND noreturn,
/* balloc.c */
-extern int ext3_bg_has_super(struct super_block *sb, int group);
-extern unsigned long ext3_bg_num_gdb(struct super_block *sb, int group);
-extern ext3_fsblk_t ext3_new_block (handle_t *handle, struct inode *inode,
- ext3_fsblk_t goal, int *errp);
-extern ext3_fsblk_t ext3_new_blocks (handle_t *handle, struct inode *inode,
- ext3_fsblk_t goal, unsigned long *count, int *errp);
-extern void ext3_free_blocks (handle_t *handle, struct inode *inode,
- ext3_fsblk_t block, unsigned long count);
-extern void ext3_free_blocks_sb (handle_t *handle, struct super_block *sb,
- ext3_fsblk_t block, unsigned long count,
+extern unsigned int ext4_block_group(struct super_block *sb,
+ ext4_fsblk_t blocknr);
+extern ext4_grpblk_t ext4_block_group_offset(struct super_block *sb,
+ ext4_fsblk_t blocknr);
+extern int ext4_bg_has_super(struct super_block *sb, int group);
+extern unsigned long ext4_bg_num_gdb(struct super_block *sb, int group);
+extern ext4_fsblk_t ext4_new_block (handle_t *handle, struct inode *inode,
+ ext4_fsblk_t goal, int *errp);
+extern ext4_fsblk_t ext4_new_blocks (handle_t *handle, struct inode *inode,
+ ext4_fsblk_t goal, unsigned long *count, int *errp);
+extern void ext4_free_blocks (handle_t *handle, struct inode *inode,
+ ext4_fsblk_t block, unsigned long count);
+extern void ext4_free_blocks_sb (handle_t *handle, struct super_block *sb,
+ ext4_fsblk_t block, unsigned long count,
unsigned long *pdquot_freed_blocks);
-extern ext3_fsblk_t ext3_count_free_blocks (struct super_block *);
-extern void ext3_check_blocks_bitmap (struct super_block *);
-extern struct ext3_group_desc * ext3_get_group_desc(struct super_block * sb,
+extern ext4_fsblk_t ext4_count_free_blocks (struct super_block *);
+extern void ext4_check_blocks_bitmap (struct super_block *);
+extern struct ext4_group_desc * ext4_get_group_desc(struct super_block * sb,
unsigned int block_group,
struct buffer_head ** bh);
-extern int ext3_should_retry_alloc(struct super_block *sb, int *retries);
-extern void ext3_init_block_alloc_info(struct inode *);
-extern void ext3_rsv_window_add(struct super_block *sb, struct ext3_reserve_window_node *rsv);
+extern int ext4_should_retry_alloc(struct super_block *sb, int *retries);
+extern void ext4_init_block_alloc_info(struct inode *);
+extern void ext4_rsv_window_add(struct super_block *sb, struct ext4_reserve_window_node *rsv);
/* dir.c */
-extern int ext3_check_dir_entry(const char *, struct inode *,
- struct ext3_dir_entry_2 *,
+extern int ext4_check_dir_entry(const char *, struct inode *,
+ struct ext4_dir_entry_2 *,
struct buffer_head *, unsigned long);
-extern int ext3_htree_store_dirent(struct file *dir_file, __u32 hash,
+extern int ext4_htree_store_dirent(struct file *dir_file, __u32 hash,
__u32 minor_hash,
- struct ext3_dir_entry_2 *dirent);
-extern void ext3_htree_free_dir_info(struct dir_private_info *p);
+ struct ext4_dir_entry_2 *dirent);
+extern void ext4_htree_free_dir_info(struct dir_private_info *p);
/* fsync.c */
-extern int ext3_sync_file (struct file *, struct dentry *, int);
+extern int ext4_sync_file (struct file *, struct dentry *, int);
/* hash.c */
-extern int ext3fs_dirhash(const char *name, int len, struct
+extern int ext4fs_dirhash(const char *name, int len, struct
dx_hash_info *hinfo);
/* ialloc.c */
-extern struct inode * ext3_new_inode (handle_t *, struct inode *, int);
-extern void ext3_free_inode (handle_t *, struct inode *);
-extern struct inode * ext3_orphan_get (struct super_block *, unsigned long);
-extern unsigned long ext3_count_free_inodes (struct super_block *);
-extern unsigned long ext3_count_dirs (struct super_block *);
-extern void ext3_check_inodes_bitmap (struct super_block *);
-extern unsigned long ext3_count_free (struct buffer_head *, unsigned);
+extern struct inode * ext4_new_inode (handle_t *, struct inode *, int);
+extern void ext4_free_inode (handle_t *, struct inode *);
+extern struct inode * ext4_orphan_get (struct super_block *, unsigned long);
+extern unsigned long ext4_count_free_inodes (struct super_block *);
+extern unsigned long ext4_count_dirs (struct super_block *);
+extern void ext4_check_inodes_bitmap (struct super_block *);
+extern unsigned long ext4_count_free (struct buffer_head *, unsigned);
/* inode.c */
-int ext3_forget(handle_t *handle, int is_metadata, struct inode *inode,
- struct buffer_head *bh, ext3_fsblk_t blocknr);
-struct buffer_head * ext3_getblk (handle_t *, struct inode *, long, int, int *);
-struct buffer_head * ext3_bread (handle_t *, struct inode *, int, int, int *);
-int ext3_get_blocks_handle(handle_t *handle, struct inode *inode,
+int ext4_forget(handle_t *handle, int is_metadata, struct inode *inode,
+ struct buffer_head *bh, ext4_fsblk_t blocknr);
+struct buffer_head * ext4_getblk (handle_t *, struct inode *, long, int, int *);
+struct buffer_head * ext4_bread (handle_t *, struct inode *, int, int, int *);
+int ext4_get_blocks_handle(handle_t *handle, struct inode *inode,
sector_t iblock, unsigned long maxblocks, struct buffer_head *bh_result,
int create, int extend_disksize);
-extern void ext3_read_inode (struct inode *);
-extern int ext3_write_inode (struct inode *, int);
-extern int ext3_setattr (struct dentry *, struct iattr *);
-extern void ext3_delete_inode (struct inode *);
-extern int ext3_sync_inode (handle_t *, struct inode *);
-extern void ext3_discard_reservation (struct inode *);
-extern void ext3_dirty_inode(struct inode *);
-extern int ext3_change_inode_journal_flag(struct inode *, int);
-extern int ext3_get_inode_loc(struct inode *, struct ext3_iloc *);
-extern void ext3_truncate (struct inode *);
-extern void ext3_set_inode_flags(struct inode *);
-extern void ext3_set_aops(struct inode *inode);
+extern void ext4_read_inode (struct inode *);
+extern int ext4_write_inode (struct inode *, int);
+extern int ext4_setattr (struct dentry *, struct iattr *);
+extern void ext4_delete_inode (struct inode *);
+extern int ext4_sync_inode (handle_t *, struct inode *);
+extern void ext4_discard_reservation (struct inode *);
+extern void ext4_dirty_inode(struct inode *);
+extern int ext4_change_inode_journal_flag(struct inode *, int);
+extern int ext4_get_inode_loc(struct inode *, struct ext4_iloc *);
+extern void ext4_truncate (struct inode *);
+extern void ext4_set_inode_flags(struct inode *);
+extern void ext4_set_aops(struct inode *inode);
+extern int ext4_writepage_trans_blocks(struct inode *);
+extern int ext4_block_truncate_page(handle_t *handle, struct page *page,
+ struct address_space *mapping, loff_t from);
/* ioctl.c */
-extern int ext3_ioctl (struct inode *, struct file *, unsigned int,
+extern int ext4_ioctl (struct inode *, struct file *, unsigned int,
unsigned long);
-extern long ext3_compat_ioctl (struct file *, unsigned int, unsigned long);
+extern long ext4_compat_ioctl (struct file *, unsigned int, unsigned long);
/* namei.c */
-extern int ext3_orphan_add(handle_t *, struct inode *);
-extern int ext3_orphan_del(handle_t *, struct inode *);
-extern int ext3_htree_fill_tree(struct file *dir_file, __u32 start_hash,
+extern int ext4_orphan_add(handle_t *, struct inode *);
+extern int ext4_orphan_del(handle_t *, struct inode *);
+extern int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash,
__u32 start_minor_hash, __u32 *next_hash);
/* resize.c */
-extern int ext3_group_add(struct super_block *sb,
- struct ext3_new_group_data *input);
-extern int ext3_group_extend(struct super_block *sb,
- struct ext3_super_block *es,
- ext3_fsblk_t n_blocks_count);
+extern int ext4_group_add(struct super_block *sb,
+ struct ext4_new_group_data *input);
+extern int ext4_group_extend(struct super_block *sb,
+ struct ext4_super_block *es,
+ ext4_fsblk_t n_blocks_count);
/* super.c */
-extern void ext3_error (struct super_block *, const char *, const char *, ...)
+extern void ext4_error (struct super_block *, const char *, const char *, ...)
__attribute__ ((format (printf, 3, 4)));
-extern void __ext3_std_error (struct super_block *, const char *, int);
-extern void ext3_abort (struct super_block *, const char *, const char *, ...)
+extern void __ext4_std_error (struct super_block *, const char *, int);
+extern void ext4_abort (struct super_block *, const char *, const char *, ...)
__attribute__ ((format (printf, 3, 4)));
-extern void ext3_warning (struct super_block *, const char *, const char *, ...)
+extern void ext4_warning (struct super_block *, const char *, const char *, ...)
__attribute__ ((format (printf, 3, 4)));
-extern void ext3_update_dynamic_rev (struct super_block *sb);
+extern void ext4_update_dynamic_rev (struct super_block *sb);
+extern ext4_fsblk_t ext4_block_bitmap(struct super_block *sb,
+ struct ext4_group_desc *bg);
+extern ext4_fsblk_t ext4_inode_bitmap(struct super_block *sb,
+ struct ext4_group_desc *bg);
+extern ext4_fsblk_t ext4_inode_table(struct super_block *sb,
+ struct ext4_group_desc *bg);
+extern void ext4_block_bitmap_set(struct super_block *sb,
+ struct ext4_group_desc *bg, ext4_fsblk_t blk);
+extern void ext4_inode_bitmap_set(struct super_block *sb,
+ struct ext4_group_desc *bg, ext4_fsblk_t blk);
+extern void ext4_inode_table_set(struct super_block *sb,
+ struct ext4_group_desc *bg, ext4_fsblk_t blk);
+
+static inline ext4_fsblk_t ext4_blocks_count(struct ext4_super_block *es)
+{
+ return ((ext4_fsblk_t)le32_to_cpu(es->s_blocks_count_hi) << 32) |
+ le32_to_cpu(es->s_blocks_count);
+}
+
+static inline ext4_fsblk_t ext4_r_blocks_count(struct ext4_super_block *es)
+{
+ return ((ext4_fsblk_t)le32_to_cpu(es->s_r_blocks_count_hi) << 32) |
+ le32_to_cpu(es->s_r_blocks_count);
+}
+
+static inline ext4_fsblk_t ext4_free_blocks_count(struct ext4_super_block *es)
+{
+ return ((ext4_fsblk_t)le32_to_cpu(es->s_free_blocks_count_hi) << 32) |
+ le32_to_cpu(es->s_free_blocks_count);
+}
+
+static inline void ext4_blocks_count_set(struct ext4_super_block *es,
+ ext4_fsblk_t blk)
+{
+ es->s_blocks_count = cpu_to_le32((u32)blk);
+ es->s_blocks_count_hi = cpu_to_le32(blk >> 32);
+}
+
+static inline void ext4_free_blocks_count_set(struct ext4_super_block *es,
+ ext4_fsblk_t blk)
+{
+ es->s_free_blocks_count = cpu_to_le32((u32)blk);
+ es->s_free_blocks_count_hi = cpu_to_le32(blk >> 32);
+}
+
+static inline void ext4_r_blocks_count_set(struct ext4_super_block *es,
+ ext4_fsblk_t blk)
+{
+ es->s_r_blocks_count = cpu_to_le32((u32)blk);
+ es->s_r_blocks_count_hi = cpu_to_le32(blk >> 32);
+}
+
-#define ext3_std_error(sb, errno) \
+
+#define ext4_std_error(sb, errno) \
do { \
if ((errno)) \
- __ext3_std_error((sb), __FUNCTION__, (errno)); \
+ __ext4_std_error((sb), __FUNCTION__, (errno)); \
} while (0)
/*
*/
/* dir.c */
-extern const struct file_operations ext3_dir_operations;
+extern const struct file_operations ext4_dir_operations;
/* file.c */
-extern struct inode_operations ext3_file_inode_operations;
-extern const struct file_operations ext3_file_operations;
+extern struct inode_operations ext4_file_inode_operations;
+extern const struct file_operations ext4_file_operations;
/* namei.c */
-extern struct inode_operations ext3_dir_inode_operations;
-extern struct inode_operations ext3_special_inode_operations;
+extern struct inode_operations ext4_dir_inode_operations;
+extern struct inode_operations ext4_special_inode_operations;
/* symlink.c */
-extern struct inode_operations ext3_symlink_inode_operations;
-extern struct inode_operations ext3_fast_symlink_inode_operations;
+extern struct inode_operations ext4_symlink_inode_operations;
+extern struct inode_operations ext4_fast_symlink_inode_operations;
+
+/* extents.c */
+extern int ext4_ext_tree_init(handle_t *handle, struct inode *);
+extern int ext4_ext_writepage_trans_blocks(struct inode *, int);
+extern int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
+ ext4_fsblk_t iblock,
+ unsigned long max_blocks, struct buffer_head *bh_result,
+ int create, int extend_disksize);
+extern void ext4_ext_truncate(struct inode *, struct page *);
+extern void ext4_ext_init(struct super_block *);
+extern void ext4_ext_release(struct super_block *);
+static inline int
+ext4_get_blocks_wrap(handle_t *handle, struct inode *inode, sector_t block,
+ unsigned long max_blocks, struct buffer_head *bh,
+ int create, int extend_disksize)
+{
+ if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)
+ return ext4_ext_get_blocks(handle, inode, block, max_blocks,
+ bh, create, extend_disksize);
+ return ext4_get_blocks_handle(handle, inode, block, max_blocks, bh,
+ create, extend_disksize);
+}
#endif /* __KERNEL__ */
-#endif /* _LINUX_EXT3_FS_H */
+#endif /* _LINUX_EXT4_FS_H */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff