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/****************************************************************************
****************************************************************************
***
*** 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 _EXT4_EXTENTS
#define _EXT4_EXTENTS
#include "ext4_utils/ext4.h"
#define AGGRESSIVE_TEST_
#define EXTENTS_STATS__
#define CHECK_BINSEARCH__
#define EXT_DEBUG__
#ifdef EXT_DEBUG
#define ext_debug(a...) printk(a)
#else
#define ext_debug(a...)
#endif
#define EXT_STATS_
struct ext4_extent {
__le32 ee_block;
__le16 ee_len;
__le16 ee_start_hi;
__le32 ee_start_lo;
};
struct ext4_extent_idx {
__le32 ei_block;
__le32 ei_leaf_lo;
__le16 ei_leaf_hi;
__u16 ei_unused;
};
struct ext4_extent_header {
__le16 eh_magic;
__le16 eh_entries;
__le16 eh_max;
__le16 eh_depth;
__le32 eh_generation;
};
#define EXT4_EXT_MAGIC 0xf30a
struct ext4_ext_path {
ext4_fsblk_t p_block;
__u16 p_depth;
struct ext4_extent *p_ext;
struct ext4_extent_idx *p_idx;
struct ext4_extent_header *p_hdr;
struct buffer_head *p_bh;
};
#define EXT4_EXT_CACHE_NO 0
#define EXT4_EXT_CACHE_GAP 1
#define EXT4_EXT_CACHE_EXTENT 2
#define EXT_CONTINUE 0
#define EXT_BREAK 1
#define EXT_REPEAT 2
#define EXT_MAX_BLOCK 0xffffffff
#define EXT_INIT_MAX_LEN (1UL << 15)
#define EXT_UNINIT_MAX_LEN (EXT_INIT_MAX_LEN - 1)
#define EXT_FIRST_EXTENT(__hdr__) ((struct ext4_extent *) (((char *) (__hdr__)) + sizeof(struct ext4_extent_header)))
#define EXT_FIRST_INDEX(__hdr__) ((struct ext4_extent_idx *) (((char *) (__hdr__)) + sizeof(struct ext4_extent_header)))
#define EXT_HAS_FREE_INDEX(__path__) (le16_to_cpu((__path__)->p_hdr->eh_entries) < le16_to_cpu((__path__)->p_hdr->eh_max))
#define EXT_LAST_EXTENT(__hdr__) (EXT_FIRST_EXTENT((__hdr__)) + le16_to_cpu((__hdr__)->eh_entries) - 1)
#define EXT_LAST_INDEX(__hdr__) (EXT_FIRST_INDEX((__hdr__)) + le16_to_cpu((__hdr__)->eh_entries) - 1)
#define EXT_MAX_EXTENT(__hdr__) (EXT_FIRST_EXTENT((__hdr__)) + le16_to_cpu((__hdr__)->eh_max) - 1)
#define EXT_MAX_INDEX(__hdr__) (EXT_FIRST_INDEX((__hdr__)) + le16_to_cpu((__hdr__)->eh_max) - 1)
#endif
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