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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.
***
*** To edit the content of this header, modify the corresponding
*** source file (e.g. under external/kernel-headers/original/) then
*** run bionic/libc/kernel/tools/update_all.py
***
*** Any manual change here will be lost the next time this script will
*** be run. You've been warned!
***
****************************************************************************
****************************************************************************/
#ifndef _LINUX_BCACHE_H
#define _LINUX_BCACHE_H
#include <linux/types.h>
#define BITMASK(name,type,field,offset,size) static inline __u64 name(const type * k) \
{ return(k->field >> offset) & ~(~0ULL << size); } static inline void SET_ ##name(type * k, __u64 v) \
{ k->field &= ~(~(~0ULL << size) << offset); k->field |= (v & ~(~0ULL << size)) << offset; \
}
struct bkey {
__u64 high;
__u64 low;
__u64 ptr[];
};
#define KEY_FIELD(name,field,offset,size) BITMASK(name, struct bkey, field, offset, size)
#define PTR_FIELD(name,offset,size) static inline __u64 name(const struct bkey * k, unsigned int i) \
{ return(k->ptr[i] >> offset) & ~(~0ULL << size); } static inline void SET_ ##name(struct bkey * k, unsigned int i, __u64 v) \
{ k->ptr[i] &= ~(~(~0ULL << size) << offset); k->ptr[i] |= (v & ~(~0ULL << size)) << offset; \
}
#define KEY_SIZE_BITS 16
#define KEY_MAX_U64S 8
#define KEY(inode,offset,size) \
((struct bkey) {.high = (1ULL << 63) | ((__u64) (size) << 20) | (inode),.low = (offset) \
})
#define ZERO_KEY KEY(0, 0, 0)
#define MAX_KEY_INODE (~(~0 << 20))
#define MAX_KEY_OFFSET (~0ULL >> 1)
#define MAX_KEY KEY(MAX_KEY_INODE, MAX_KEY_OFFSET, 0)
#define KEY_START(k) (KEY_OFFSET(k) - KEY_SIZE(k))
#define START_KEY(k) KEY(KEY_INODE(k), KEY_START(k), 0)
#define PTR_DEV_BITS 12
#define PTR_CHECK_DEV ((1 << PTR_DEV_BITS) - 1)
#define MAKE_PTR(gen,offset,dev) ((((__u64) dev) << 51) | ((__u64) offset) << 8 | gen)
#define bkey_copy(_dest,_src) memcpy(_dest, _src, bkey_bytes(_src))
#define BKEY_PAD 8
#define BKEY_PADDED(key) union { struct bkey key; __u64 key ##_pad[BKEY_PAD]; }
#define BCACHE_SB_VERSION_CDEV 0
#define BCACHE_SB_VERSION_BDEV 1
#define BCACHE_SB_VERSION_CDEV_WITH_UUID 3
#define BCACHE_SB_VERSION_BDEV_WITH_OFFSET 4
#define BCACHE_SB_VERSION_CDEV_WITH_FEATURES 5
#define BCACHE_SB_VERSION_BDEV_WITH_FEATURES 6
#define BCACHE_SB_MAX_VERSION 6
#define SB_SECTOR 8
#define SB_OFFSET (SB_SECTOR << SECTOR_SHIFT)
#define SB_SIZE 4096
#define SB_LABEL_SIZE 32
#define SB_JOURNAL_BUCKETS 256U
#define MAX_CACHES_PER_SET 8
#define BDEV_DATA_START_DEFAULT 16
struct cache_sb_disk {
__le64 csum;
__le64 offset;
__le64 version;
__u8 magic[16];
__u8 uuid[16];
union {
__u8 set_uuid[16];
__le64 set_magic;
};
__u8 label[SB_LABEL_SIZE];
__le64 flags;
__le64 seq;
__le64 feature_compat;
__le64 feature_incompat;
__le64 feature_ro_compat;
__le64 pad[5];
union {
struct {
__le64 nbuckets;
__le16 block_size;
__le16 bucket_size;
__le16 nr_in_set;
__le16 nr_this_dev;
};
struct {
__le64 data_offset;
};
};
__le32 last_mount;
__le16 first_bucket;
union {
__le16 njournal_buckets;
__le16 keys;
};
__le64 d[SB_JOURNAL_BUCKETS];
__le16 obso_bucket_size_hi;
};
struct cache_sb {
__u64 offset;
__u64 version;
__u8 magic[16];
__u8 uuid[16];
union {
__u8 set_uuid[16];
__u64 set_magic;
};
__u8 label[SB_LABEL_SIZE];
__u64 flags;
__u64 seq;
__u64 feature_compat;
__u64 feature_incompat;
__u64 feature_ro_compat;
union {
struct {
__u64 nbuckets;
__u16 block_size;
__u16 nr_in_set;
__u16 nr_this_dev;
__u32 bucket_size;
};
struct {
__u64 data_offset;
};
};
__u32 last_mount;
__u16 first_bucket;
union {
__u16 njournal_buckets;
__u16 keys;
};
__u64 d[SB_JOURNAL_BUCKETS];
};
#define CACHE_REPLACEMENT_LRU 0U
#define CACHE_REPLACEMENT_FIFO 1U
#define CACHE_REPLACEMENT_RANDOM 2U
#define CACHE_MODE_WRITETHROUGH 0U
#define CACHE_MODE_WRITEBACK 1U
#define CACHE_MODE_WRITEAROUND 2U
#define CACHE_MODE_NONE 3U
#define BDEV_STATE_NONE 0U
#define BDEV_STATE_CLEAN 1U
#define BDEV_STATE_DIRTY 2U
#define BDEV_STATE_STALE 3U
#define JSET_MAGIC 0x245235c1a3625032ULL
#define PSET_MAGIC 0x6750e15f87337f91ULL
#define BSET_MAGIC 0x90135c78b99e07f5ULL
#define BCACHE_JSET_VERSION_UUIDv1 1
#define BCACHE_JSET_VERSION_UUID 1
#define BCACHE_JSET_VERSION 1
struct jset {
__u64 csum;
__u64 magic;
__u64 seq;
__u32 version;
__u32 keys;
__u64 last_seq;
BKEY_PADDED(uuid_bucket);
BKEY_PADDED(btree_root);
__u16 btree_level;
__u16 pad[3];
__u64 prio_bucket[MAX_CACHES_PER_SET];
union {
struct bkey start[0];
__u64 d[0];
};
};
struct prio_set {
__u64 csum;
__u64 magic;
__u64 seq;
__u32 version;
__u32 pad;
__u64 next_bucket;
struct bucket_disk {
__u16 prio;
__u8 gen;
} __attribute((packed)) data[];
};
struct uuid_entry {
union {
struct {
__u8 uuid[16];
__u8 label[32];
__u32 first_reg;
__u32 last_reg;
__u32 invalidated;
__u32 flags;
__u64 sectors;
};
__u8 pad[128];
};
};
#define BCACHE_BSET_CSUM 1
#define BCACHE_BSET_VERSION 1
struct bset {
__u64 csum;
__u64 magic;
__u64 seq;
__u32 version;
__u32 keys;
union {
struct bkey start[0];
__u64 d[0];
};
};
struct uuid_entry_v0 {
__u8 uuid[16];
__u8 label[32];
__u32 first_reg;
__u32 last_reg;
__u32 invalidated;
__u32 pad;
};
#endif
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