1 files changed, 0 insertions, 437 deletions
diff --git a/contrib/qemu/block/qcow2.h b/contrib/qemu/block/qcow2.h
deleted file mode 100644
index 3b2d5cda71f..00000000000
--- a/contrib/qemu/block/qcow2.h
+++ /dev/null
@@ -1,437 +0,0 @@
-/*
- * Block driver for the QCOW version 2 format
- *
- * Copyright (c) 2004-2006 Fabrice Bellard
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#ifndef BLOCK_QCOW2_H
-#define BLOCK_QCOW2_H
-
-#include "qemu/aes.h"
-#include "block/coroutine.h"
-
-//#define DEBUG_ALLOC
-//#define DEBUG_ALLOC2
-//#define DEBUG_EXT
-
-#define QCOW_MAGIC (('Q' << 24) | ('F' << 16) | ('I' << 8) | 0xfb)
-
-#define QCOW_CRYPT_NONE 0
-#define QCOW_CRYPT_AES  1
-
-#define QCOW_MAX_CRYPT_CLUSTERS 32
-
-/* indicate that the refcount of the referenced cluster is exactly one. */
-#define QCOW_OFLAG_COPIED     (1LL << 63)
-/* indicate that the cluster is compressed (they never have the copied flag) */
-#define QCOW_OFLAG_COMPRESSED (1LL << 62)
-/* The cluster reads as all zeros */
-#define QCOW_OFLAG_ZERO (1LL << 0)
-
-#define REFCOUNT_SHIFT 1 /* refcount size is 2 bytes */
-
-#define MIN_CLUSTER_BITS 9
-#define MAX_CLUSTER_BITS 21
-
-#define L2_CACHE_SIZE 16
-
-/* Must be at least 4 to cover all cases of refcount table growth */
-#define REFCOUNT_CACHE_SIZE 4
-
-#define DEFAULT_CLUSTER_SIZE 65536
-
-
-#define QCOW2_OPT_LAZY_REFCOUNTS "lazy_refcounts"
-#define QCOW2_OPT_DISCARD_REQUEST "pass_discard_request"
-#define QCOW2_OPT_DISCARD_SNAPSHOT "pass_discard_snapshot"
-#define QCOW2_OPT_DISCARD_OTHER "pass_discard_other"
-
-typedef struct QCowHeader {
-    uint32_t magic;
-    uint32_t version;
-    uint64_t backing_file_offset;
-    uint32_t backing_file_size;
-    uint32_t cluster_bits;
-    uint64_t size; /* in bytes */
-    uint32_t crypt_method;
-    uint32_t l1_size; /* XXX: save number of clusters instead ? */
-    uint64_t l1_table_offset;
-    uint64_t refcount_table_offset;
-    uint32_t refcount_table_clusters;
-    uint32_t nb_snapshots;
-    uint64_t snapshots_offset;
-
-    /* The following fields are only valid for version >= 3 */
-    uint64_t incompatible_features;
-    uint64_t compatible_features;
-    uint64_t autoclear_features;
-
-    uint32_t refcount_order;
-    uint32_t header_length;
-} QCowHeader;
-
-typedef struct QCowSnapshot {
-    uint64_t l1_table_offset;
-    uint32_t l1_size;
-    char *id_str;
-    char *name;
-    uint64_t disk_size;
-    uint64_t vm_state_size;
-    uint32_t date_sec;
-    uint32_t date_nsec;
-    uint64_t vm_clock_nsec;
-} QCowSnapshot;
-
-struct Qcow2Cache;
-typedef struct Qcow2Cache Qcow2Cache;
-
-typedef struct Qcow2UnknownHeaderExtension {
-    uint32_t magic;
-    uint32_t len;
-    QLIST_ENTRY(Qcow2UnknownHeaderExtension) next;
-    uint8_t data[];
-} Qcow2UnknownHeaderExtension;
-
-enum {
-    QCOW2_FEAT_TYPE_INCOMPATIBLE    = 0,
-    QCOW2_FEAT_TYPE_COMPATIBLE      = 1,
-    QCOW2_FEAT_TYPE_AUTOCLEAR       = 2,
-};
-
-/* Incompatible feature bits */
-enum {
-    QCOW2_INCOMPAT_DIRTY_BITNR   = 0,
-    QCOW2_INCOMPAT_DIRTY         = 1 << QCOW2_INCOMPAT_DIRTY_BITNR,
-
-    QCOW2_INCOMPAT_MASK          = QCOW2_INCOMPAT_DIRTY,
-};
-
-/* Compatible feature bits */
-enum {
-    QCOW2_COMPAT_LAZY_REFCOUNTS_BITNR = 0,
-    QCOW2_COMPAT_LAZY_REFCOUNTS       = 1 << QCOW2_COMPAT_LAZY_REFCOUNTS_BITNR,
-
-    QCOW2_COMPAT_FEAT_MASK            = QCOW2_COMPAT_LAZY_REFCOUNTS,
-};
-
-enum qcow2_discard_type {
-    QCOW2_DISCARD_NEVER = 0,
-    QCOW2_DISCARD_ALWAYS,
-    QCOW2_DISCARD_REQUEST,
-    QCOW2_DISCARD_SNAPSHOT,
-    QCOW2_DISCARD_OTHER,
-    QCOW2_DISCARD_MAX
-};
-
-typedef struct Qcow2Feature {
-    uint8_t type;
-    uint8_t bit;
-    char    name[46];
-} QEMU_PACKED Qcow2Feature;
-
-typedef struct Qcow2DiscardRegion {
-    BlockDriverState *bs;
-    uint64_t offset;
-    uint64_t bytes;
-    QTAILQ_ENTRY(Qcow2DiscardRegion) next;
-} Qcow2DiscardRegion;
-
-typedef struct BDRVQcowState {
-    int cluster_bits;
-    int cluster_size;
-    int cluster_sectors;
-    int l2_bits;
-    int l2_size;
-    int l1_size;
-    int l1_vm_state_index;
-    int csize_shift;
-    int csize_mask;
-    uint64_t cluster_offset_mask;
-    uint64_t l1_table_offset;
-    uint64_t *l1_table;
-
-    Qcow2Cache* l2_table_cache;
-    Qcow2Cache* refcount_block_cache;
-
-    uint8_t *cluster_cache;
-    uint8_t *cluster_data;
-    uint64_t cluster_cache_offset;
-    QLIST_HEAD(QCowClusterAlloc, QCowL2Meta) cluster_allocs;
-
-    uint64_t *refcount_table;
-    uint64_t refcount_table_offset;
-    uint32_t refcount_table_size;
-    int64_t free_cluster_index;
-    int64_t free_byte_offset;
-
-    CoMutex lock;
-
-    uint32_t crypt_method; /* current crypt method, 0 if no key yet */
-    uint32_t crypt_method_header;
-    AES_KEY aes_encrypt_key;
-    AES_KEY aes_decrypt_key;
-    uint64_t snapshots_offset;
-    int snapshots_size;
-    int nb_snapshots;
-    QCowSnapshot *snapshots;
-
-    int flags;
-    int qcow_version;
-    bool use_lazy_refcounts;
-
-    bool discard_passthrough[QCOW2_DISCARD_MAX];
-
-    uint64_t incompatible_features;
-    uint64_t compatible_features;
-    uint64_t autoclear_features;
-
-    size_t unknown_header_fields_size;
-    void* unknown_header_fields;
-    QLIST_HEAD(, Qcow2UnknownHeaderExtension) unknown_header_ext;
-    QTAILQ_HEAD (, Qcow2DiscardRegion) discards;
-    bool cache_discards;
-} BDRVQcowState;
-
-/* XXX: use std qcow open function ? */
-typedef struct QCowCreateState {
-    int cluster_size;
-    int cluster_bits;
-    uint16_t *refcount_block;
-    uint64_t *refcount_table;
-    int64_t l1_table_offset;
-    int64_t refcount_table_offset;
-    int64_t refcount_block_offset;
-} QCowCreateState;
-
-struct QCowAIOCB;
-
-typedef struct Qcow2COWRegion {
-    /**
-     * Offset of the COW region in bytes from the start of the first cluster
-     * touched by the request.
-     */
-    uint64_t    offset;
-
-    /** Number of sectors to copy */
-    int         nb_sectors;
-} Qcow2COWRegion;
-
-/**
- * Describes an in-flight (part of a) write request that writes to clusters
- * that are not referenced in their L2 table yet.
- */
-typedef struct QCowL2Meta
-{
-    /** Guest offset of the first newly allocated cluster */
-    uint64_t offset;
-
-    /** Host offset of the first newly allocated cluster */
-    uint64_t alloc_offset;
-
-    /**
-     * Number of sectors from the start of the first allocated cluster to
-     * the end of the (possibly shortened) request
-     */
-    int nb_available;
-
-    /** Number of newly allocated clusters */
-    int nb_clusters;
-
-    /**
-     * Requests that overlap with this allocation and wait to be restarted
-     * when the allocating request has completed.
-     */
-    CoQueue dependent_requests;
-
-    /**
-     * The COW Region between the start of the first allocated cluster and the
-     * area the guest actually writes to.
-     */
-    Qcow2COWRegion cow_start;
-
-    /**
-     * The COW Region between the area the guest actually writes to and the
-     * end of the last allocated cluster.
-     */
-    Qcow2COWRegion cow_end;
-
-    /** Pointer to next L2Meta of the same write request */
-    struct QCowL2Meta *next;
-
-    QLIST_ENTRY(QCowL2Meta) next_in_flight;
-} QCowL2Meta;
-
-enum {
-    QCOW2_CLUSTER_UNALLOCATED,
-    QCOW2_CLUSTER_NORMAL,
-    QCOW2_CLUSTER_COMPRESSED,
-    QCOW2_CLUSTER_ZERO
-};
-
-#define L1E_OFFSET_MASK 0x00ffffffffffff00ULL
-#define L2E_OFFSET_MASK 0x00ffffffffffff00ULL
-#define L2E_COMPRESSED_OFFSET_SIZE_MASK 0x3fffffffffffffffULL
-
-#define REFT_OFFSET_MASK 0xffffffffffffff00ULL
-
-static inline int64_t start_of_cluster(BDRVQcowState *s, int64_t offset)
-{
-    return offset & ~(s->cluster_size - 1);
-}
-
-static inline int64_t offset_into_cluster(BDRVQcowState *s, int64_t offset)
-{
-    return offset & (s->cluster_size - 1);
-}
-
-static inline int size_to_clusters(BDRVQcowState *s, int64_t size)
-{
-    return (size + (s->cluster_size - 1)) >> s->cluster_bits;
-}
-
-static inline int64_t size_to_l1(BDRVQcowState *s, int64_t size)
-{
-    int shift = s->cluster_bits + s->l2_bits;
-    return (size + (1ULL << shift) - 1) >> shift;
-}
-
-static inline int offset_to_l2_index(BDRVQcowState *s, int64_t offset)
-{
-    return (offset >> s->cluster_bits) & (s->l2_size - 1);
-}
-
-static inline int64_t align_offset(int64_t offset, int n)
-{
-    offset = (offset + n - 1) & ~(n - 1);
-    return offset;
-}
-
-static inline int qcow2_get_cluster_type(uint64_t l2_entry)
-{
-    if (l2_entry & QCOW_OFLAG_COMPRESSED) {
-        return QCOW2_CLUSTER_COMPRESSED;
-    } else if (l2_entry & QCOW_OFLAG_ZERO) {
-        return QCOW2_CLUSTER_ZERO;
-    } else if (!(l2_entry & L2E_OFFSET_MASK)) {
-        return QCOW2_CLUSTER_UNALLOCATED;
-    } else {
-        return QCOW2_CLUSTER_NORMAL;
-    }
-}
-
-/* Check whether refcounts are eager or lazy */
-static inline bool qcow2_need_accurate_refcounts(BDRVQcowState *s)
-{
-    return !(s->incompatible_features & QCOW2_INCOMPAT_DIRTY);
-}
-
-static inline uint64_t l2meta_cow_start(QCowL2Meta *m)
-{
-    return m->offset + m->cow_start.offset;
-}
-
-static inline uint64_t l2meta_cow_end(QCowL2Meta *m)
-{
-    return m->offset + m->cow_end.offset
-        + (m->cow_end.nb_sectors << BDRV_SECTOR_BITS);
-}
-
-// FIXME Need qcow2_ prefix to global functions
-
-/* qcow2.c functions */
-int qcow2_backing_read1(BlockDriverState *bs, QEMUIOVector *qiov,
-                  int64_t sector_num, int nb_sectors);
-
-int qcow2_mark_dirty(BlockDriverState *bs);
-int qcow2_update_header(BlockDriverState *bs);
-
-/* qcow2-refcount.c functions */
-int qcow2_refcount_init(BlockDriverState *bs);
-void qcow2_refcount_close(BlockDriverState *bs);
-
-int64_t qcow2_alloc_clusters(BlockDriverState *bs, int64_t size);
-int qcow2_alloc_clusters_at(BlockDriverState *bs, uint64_t offset,
-    int nb_clusters);
-int64_t qcow2_alloc_bytes(BlockDriverState *bs, int size);
-void qcow2_free_clusters(BlockDriverState *bs,
-                          int64_t offset, int64_t size,
-                          enum qcow2_discard_type type);
-void qcow2_free_any_clusters(BlockDriverState *bs, uint64_t l2_entry,
-                             int nb_clusters, enum qcow2_discard_type type);
-
-int qcow2_update_snapshot_refcount(BlockDriverState *bs,
-    int64_t l1_table_offset, int l1_size, int addend);
-
-int qcow2_check_refcounts(BlockDriverState *bs, BdrvCheckResult *res,
-                          BdrvCheckMode fix);
-
-void qcow2_process_discards(BlockDriverState *bs, int ret);
-
-/* qcow2-cluster.c functions */
-int qcow2_grow_l1_table(BlockDriverState *bs, uint64_t min_size,
-                        bool exact_size);
-void qcow2_l2_cache_reset(BlockDriverState *bs);
-int qcow2_decompress_cluster(BlockDriverState *bs, uint64_t cluster_offset);
-void qcow2_encrypt_sectors(BDRVQcowState *s, int64_t sector_num,
-                     uint8_t *out_buf, const uint8_t *in_buf,
-                     int nb_sectors, int enc,
-                     const AES_KEY *key);
-
-int qcow2_get_cluster_offset(BlockDriverState *bs, uint64_t offset,
-    int *num, uint64_t *cluster_offset);
-int qcow2_alloc_cluster_offset(BlockDriverState *bs, uint64_t offset,
-    int n_start, int n_end, int *num, uint64_t *host_offset, QCowL2Meta **m);
-uint64_t qcow2_alloc_compressed_cluster_offset(BlockDriverState *bs,
-                                         uint64_t offset,
-                                         int compressed_size);
-
-int qcow2_alloc_cluster_link_l2(BlockDriverState *bs, QCowL2Meta *m);
-int qcow2_discard_clusters(BlockDriverState *bs, uint64_t offset,
-    int nb_sectors);
-int qcow2_zero_clusters(BlockDriverState *bs, uint64_t offset, int nb_sectors);
-
-/* qcow2-snapshot.c functions */
-int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info);
-int qcow2_snapshot_goto(BlockDriverState *bs, const char *snapshot_id);
-int qcow2_snapshot_delete(BlockDriverState *bs, const char *snapshot_id);
-int qcow2_snapshot_list(BlockDriverState *bs, QEMUSnapshotInfo **psn_tab);
-int qcow2_snapshot_load_tmp(BlockDriverState *bs, const char *snapshot_name);
-
-void qcow2_free_snapshots(BlockDriverState *bs);
-int qcow2_read_snapshots(BlockDriverState *bs);
-
-/* qcow2-cache.c functions */
-Qcow2Cache *qcow2_cache_create(BlockDriverState *bs, int num_tables);
-int qcow2_cache_destroy(BlockDriverState* bs, Qcow2Cache *c);
-
-void qcow2_cache_entry_mark_dirty(Qcow2Cache *c, void *table);
-int qcow2_cache_flush(BlockDriverState *bs, Qcow2Cache *c);
-int qcow2_cache_set_dependency(BlockDriverState *bs, Qcow2Cache *c,
-    Qcow2Cache *dependency);
-void qcow2_cache_depends_on_flush(Qcow2Cache *c);
-
-int qcow2_cache_get(BlockDriverState *bs, Qcow2Cache *c, uint64_t offset,
-    void **table);
-int qcow2_cache_get_empty(BlockDriverState *bs, Qcow2Cache *c, uint64_t offset,
-    void **table);
-int qcow2_cache_put(BlockDriverState *bs, Qcow2Cache *c, void **table);
-
-#endif