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-rw-r--r--fs/btrfs/ctree.h183
1 files changed, 91 insertions, 92 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 3f3eb7b17cac..2add002662f4 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -470,8 +470,8 @@ struct btrfs_block_rsv {
/*
* free clusters are used to claim free space in relatively large chunks,
- * allowing us to do less seeky writes. They are used for all metadata
- * allocations and data allocations in ssd mode.
+ * allowing us to do less seeky writes. They are used for all metadata
+ * allocations. In ssd_spread mode they are also used for data allocations.
*/
struct btrfs_free_cluster {
spinlock_t lock;
@@ -558,7 +558,6 @@ struct btrfs_block_group_cache {
u64 bytes_super;
u64 flags;
u64 cache_generation;
- u32 sectorsize;
/*
* If the free space extent count exceeds this number, convert the block
@@ -968,7 +967,7 @@ struct btrfs_fs_info {
struct reloc_control *reloc_ctl;
- /* data_alloc_cluster is only used in ssd mode */
+ /* data_alloc_cluster is only used in ssd_spread mode */
struct btrfs_free_cluster data_alloc_cluster;
/* all metadata allocations go through this cluster */
@@ -1072,8 +1071,6 @@ struct btrfs_fs_info {
/* next backup root to be overwritten */
int backup_root_index;
- int num_tolerated_disk_barrier_failures;
-
/* device replace state */
struct btrfs_dev_replace dev_replace;
@@ -1261,12 +1258,17 @@ struct btrfs_root {
*/
int send_in_progress;
struct btrfs_subvolume_writers *subv_writers;
- atomic_t will_be_snapshoted;
+ atomic_t will_be_snapshotted;
/* For qgroup metadata space reserve */
atomic64_t qgroup_meta_rsv;
};
+struct btrfs_file_private {
+ struct btrfs_trans_handle *trans;
+ void *filldir_buf;
+};
+
static inline u32 btrfs_inode_sectorsize(const struct inode *inode)
{
return btrfs_sb(inode->i_sb)->sectorsize;
@@ -1435,7 +1437,7 @@ do { \
#define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31)
struct btrfs_map_token {
- struct extent_buffer *eb;
+ const struct extent_buffer *eb;
char *kaddr;
unsigned long offset;
};
@@ -1469,18 +1471,19 @@ static inline void btrfs_init_map_token (struct btrfs_map_token *token)
sizeof(((type *)0)->member)))
#define DECLARE_BTRFS_SETGET_BITS(bits) \
-u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \
- unsigned long off, \
- struct btrfs_map_token *token); \
-void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \
+u##bits btrfs_get_token_##bits(const struct extent_buffer *eb, \
+ const void *ptr, unsigned long off, \
+ struct btrfs_map_token *token); \
+void btrfs_set_token_##bits(struct extent_buffer *eb, const void *ptr, \
unsigned long off, u##bits val, \
struct btrfs_map_token *token); \
-static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \
+static inline u##bits btrfs_get_##bits(const struct extent_buffer *eb, \
+ const void *ptr, \
unsigned long off) \
{ \
return btrfs_get_token_##bits(eb, ptr, off, NULL); \
} \
-static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \
+static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr,\
unsigned long off, u##bits val) \
{ \
btrfs_set_token_##bits(eb, ptr, off, val, NULL); \
@@ -1492,7 +1495,8 @@ DECLARE_BTRFS_SETGET_BITS(32)
DECLARE_BTRFS_SETGET_BITS(64)
#define BTRFS_SETGET_FUNCS(name, type, member, bits) \
-static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \
+static inline u##bits btrfs_##name(const struct extent_buffer *eb, \
+ const type *s) \
{ \
BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
return btrfs_get_##bits(eb, s, offsetof(type, member)); \
@@ -1503,7 +1507,8 @@ static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \
BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
btrfs_set_##bits(eb, s, offsetof(type, member), val); \
} \
-static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \
+static inline u##bits btrfs_token_##name(const struct extent_buffer *eb,\
+ const type *s, \
struct btrfs_map_token *token) \
{ \
BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
@@ -1518,9 +1523,9 @@ static inline void btrfs_set_token_##name(struct extent_buffer *eb, \
}
#define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
-static inline u##bits btrfs_##name(struct extent_buffer *eb) \
+static inline u##bits btrfs_##name(const struct extent_buffer *eb) \
{ \
- type *p = page_address(eb->pages[0]); \
+ const type *p = page_address(eb->pages[0]); \
u##bits res = le##bits##_to_cpu(p->member); \
return res; \
} \
@@ -1532,7 +1537,7 @@ static inline void btrfs_set_##name(struct extent_buffer *eb, \
}
#define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
-static inline u##bits btrfs_##name(type *s) \
+static inline u##bits btrfs_##name(const type *s) \
{ \
return le##bits##_to_cpu(s->member); \
} \
@@ -1799,7 +1804,6 @@ static inline u32 btrfs_extent_inline_ref_size(int type)
if (type == BTRFS_EXTENT_DATA_REF_KEY)
return sizeof(struct btrfs_extent_data_ref) +
offsetof(struct btrfs_extent_inline_ref, offset);
- BUG();
return 0;
}
@@ -1857,7 +1861,7 @@ static inline unsigned long btrfs_node_key_ptr_offset(int nr)
sizeof(struct btrfs_key_ptr) * nr;
}
-void btrfs_node_key(struct extent_buffer *eb,
+void btrfs_node_key(const struct extent_buffer *eb,
struct btrfs_disk_key *disk_key, int nr);
static inline void btrfs_set_node_key(struct extent_buffer *eb,
@@ -1886,28 +1890,28 @@ static inline struct btrfs_item *btrfs_item_nr(int nr)
return (struct btrfs_item *)btrfs_item_nr_offset(nr);
}
-static inline u32 btrfs_item_end(struct extent_buffer *eb,
+static inline u32 btrfs_item_end(const struct extent_buffer *eb,
struct btrfs_item *item)
{
return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item);
}
-static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr)
+static inline u32 btrfs_item_end_nr(const struct extent_buffer *eb, int nr)
{
return btrfs_item_end(eb, btrfs_item_nr(nr));
}
-static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr)
+static inline u32 btrfs_item_offset_nr(const struct extent_buffer *eb, int nr)
{
return btrfs_item_offset(eb, btrfs_item_nr(nr));
}
-static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr)
+static inline u32 btrfs_item_size_nr(const struct extent_buffer *eb, int nr)
{
return btrfs_item_size(eb, btrfs_item_nr(nr));
}
-static inline void btrfs_item_key(struct extent_buffer *eb,
+static inline void btrfs_item_key(const struct extent_buffer *eb,
struct btrfs_disk_key *disk_key, int nr)
{
struct btrfs_item *item = btrfs_item_nr(nr);
@@ -1943,8 +1947,8 @@ BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item,
BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item,
transid, 64);
-static inline void btrfs_dir_item_key(struct extent_buffer *eb,
- struct btrfs_dir_item *item,
+static inline void btrfs_dir_item_key(const struct extent_buffer *eb,
+ const struct btrfs_dir_item *item,
struct btrfs_disk_key *key)
{
read_eb_member(eb, item, struct btrfs_dir_item, location, key);
@@ -1952,7 +1956,7 @@ static inline void btrfs_dir_item_key(struct extent_buffer *eb,
static inline void btrfs_set_dir_item_key(struct extent_buffer *eb,
struct btrfs_dir_item *item,
- struct btrfs_disk_key *key)
+ const struct btrfs_disk_key *key)
{
write_eb_member(eb, item, struct btrfs_dir_item, location, key);
}
@@ -1964,8 +1968,8 @@ BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header,
BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header,
generation, 64);
-static inline void btrfs_free_space_key(struct extent_buffer *eb,
- struct btrfs_free_space_header *h,
+static inline void btrfs_free_space_key(const struct extent_buffer *eb,
+ const struct btrfs_free_space_header *h,
struct btrfs_disk_key *key)
{
read_eb_member(eb, h, struct btrfs_free_space_header, location, key);
@@ -1973,7 +1977,7 @@ static inline void btrfs_free_space_key(struct extent_buffer *eb,
static inline void btrfs_set_free_space_key(struct extent_buffer *eb,
struct btrfs_free_space_header *h,
- struct btrfs_disk_key *key)
+ const struct btrfs_disk_key *key)
{
write_eb_member(eb, h, struct btrfs_free_space_header, location, key);
}
@@ -2000,25 +2004,25 @@ static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk,
disk->objectid = cpu_to_le64(cpu->objectid);
}
-static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb,
- struct btrfs_key *key, int nr)
+static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb,
+ struct btrfs_key *key, int nr)
{
struct btrfs_disk_key disk_key;
btrfs_node_key(eb, &disk_key, nr);
btrfs_disk_key_to_cpu(key, &disk_key);
}
-static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb,
- struct btrfs_key *key, int nr)
+static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb,
+ struct btrfs_key *key, int nr)
{
struct btrfs_disk_key disk_key;
btrfs_item_key(eb, &disk_key, nr);
btrfs_disk_key_to_cpu(key, &disk_key);
}
-static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb,
- struct btrfs_dir_item *item,
- struct btrfs_key *key)
+static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb,
+ const struct btrfs_dir_item *item,
+ struct btrfs_key *key)
{
struct btrfs_disk_key disk_key;
btrfs_dir_item_key(eb, item, &disk_key);
@@ -2050,7 +2054,7 @@ BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header,
nritems, 32);
BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64);
-static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag)
+static inline int btrfs_header_flag(const struct extent_buffer *eb, u64 flag)
{
return (btrfs_header_flags(eb) & flag) == flag;
}
@@ -2069,7 +2073,7 @@ static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag)
return (flags & flag) == flag;
}
-static inline int btrfs_header_backref_rev(struct extent_buffer *eb)
+static inline int btrfs_header_backref_rev(const struct extent_buffer *eb)
{
u64 flags = btrfs_header_flags(eb);
return flags >> BTRFS_BACKREF_REV_SHIFT;
@@ -2089,12 +2093,12 @@ static inline unsigned long btrfs_header_fsid(void)
return offsetof(struct btrfs_header, fsid);
}
-static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer *eb)
+static inline unsigned long btrfs_header_chunk_tree_uuid(const struct extent_buffer *eb)
{
return offsetof(struct btrfs_header, chunk_tree_uuid);
}
-static inline int btrfs_is_leaf(struct extent_buffer *eb)
+static inline int btrfs_is_leaf(const struct extent_buffer *eb)
{
return btrfs_header_level(eb) == 0;
}
@@ -2128,12 +2132,12 @@ BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item,
BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item,
rtransid, 64);
-static inline bool btrfs_root_readonly(struct btrfs_root *root)
+static inline bool btrfs_root_readonly(const struct btrfs_root *root)
{
return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0;
}
-static inline bool btrfs_root_dead(struct btrfs_root *root)
+static inline bool btrfs_root_dead(const struct btrfs_root *root)
{
return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0;
}
@@ -2190,51 +2194,51 @@ BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup,
/* struct btrfs_balance_item */
BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64);
-static inline void btrfs_balance_data(struct extent_buffer *eb,
- struct btrfs_balance_item *bi,
+static inline void btrfs_balance_data(const struct extent_buffer *eb,
+ const struct btrfs_balance_item *bi,
struct btrfs_disk_balance_args *ba)
{
read_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
}
static inline void btrfs_set_balance_data(struct extent_buffer *eb,
- struct btrfs_balance_item *bi,
- struct btrfs_disk_balance_args *ba)
+ struct btrfs_balance_item *bi,
+ const struct btrfs_disk_balance_args *ba)
{
write_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
}
-static inline void btrfs_balance_meta(struct extent_buffer *eb,
- struct btrfs_balance_item *bi,
+static inline void btrfs_balance_meta(const struct extent_buffer *eb,
+ const struct btrfs_balance_item *bi,
struct btrfs_disk_balance_args *ba)
{
read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
}
static inline void btrfs_set_balance_meta(struct extent_buffer *eb,
- struct btrfs_balance_item *bi,
- struct btrfs_disk_balance_args *ba)
+ struct btrfs_balance_item *bi,
+ const struct btrfs_disk_balance_args *ba)
{
write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
}
-static inline void btrfs_balance_sys(struct extent_buffer *eb,
- struct btrfs_balance_item *bi,
+static inline void btrfs_balance_sys(const struct extent_buffer *eb,
+ const struct btrfs_balance_item *bi,
struct btrfs_disk_balance_args *ba)
{
read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
}
static inline void btrfs_set_balance_sys(struct extent_buffer *eb,
- struct btrfs_balance_item *bi,
- struct btrfs_disk_balance_args *ba)
+ struct btrfs_balance_item *bi,
+ const struct btrfs_disk_balance_args *ba)
{
write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
}
static inline void
btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu,
- struct btrfs_disk_balance_args *disk)
+ const struct btrfs_disk_balance_args *disk)
{
memset(cpu, 0, sizeof(*cpu));
@@ -2254,7 +2258,7 @@ btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu,
static inline void
btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk,
- struct btrfs_balance_args *cpu)
+ const struct btrfs_balance_args *cpu)
{
memset(disk, 0, sizeof(*disk));
@@ -2322,7 +2326,7 @@ BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64);
BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block,
uuid_tree_generation, 64);
-static inline int btrfs_super_csum_size(struct btrfs_super_block *s)
+static inline int btrfs_super_csum_size(const struct btrfs_super_block *s)
{
u16 t = btrfs_super_csum_type(s);
/*
@@ -2337,8 +2341,8 @@ static inline int btrfs_super_csum_size(struct btrfs_super_block *s)
* this returns the address of the start of the last item,
* which is the stop of the leaf data stack
*/
-static inline unsigned int leaf_data_end(struct btrfs_fs_info *fs_info,
- struct extent_buffer *leaf)
+static inline unsigned int leaf_data_end(const struct btrfs_fs_info *fs_info,
+ const struct extent_buffer *leaf)
{
u32 nr = btrfs_header_nritems(leaf);
@@ -2363,7 +2367,7 @@ BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression,
struct btrfs_file_extent_item, compression, 8);
static inline unsigned long
-btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e)
+btrfs_file_extent_inline_start(const struct btrfs_file_extent_item *e)
{
return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START;
}
@@ -2397,8 +2401,9 @@ BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item,
* size of any extent headers. If a file is compressed on disk, this is
* the compressed size
*/
-static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb,
- struct btrfs_item *e)
+static inline u32 btrfs_file_extent_inline_item_len(
+ const struct extent_buffer *eb,
+ struct btrfs_item *e)
{
return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
}
@@ -2406,9 +2411,9 @@ static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb,
/* this returns the number of file bytes represented by the inline item.
* If an item is compressed, this is the uncompressed size
*/
-static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb,
- int slot,
- struct btrfs_file_extent_item *fi)
+static inline u32 btrfs_file_extent_inline_len(const struct extent_buffer *eb,
+ int slot,
+ const struct btrfs_file_extent_item *fi)
{
struct btrfs_map_token token;
@@ -2430,8 +2435,8 @@ static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb,
/* btrfs_dev_stats_item */
-static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb,
- struct btrfs_dev_stats_item *ptr,
+static inline u64 btrfs_dev_stats_value(const struct extent_buffer *eb,
+ const struct btrfs_dev_stats_item *ptr,
int index)
{
u64 val;
@@ -2561,6 +2566,17 @@ static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping)
/* extent-tree.c */
+enum btrfs_inline_ref_type {
+ BTRFS_REF_TYPE_INVALID = 0,
+ BTRFS_REF_TYPE_BLOCK = 1,
+ BTRFS_REF_TYPE_DATA = 2,
+ BTRFS_REF_TYPE_ANY = 3,
+};
+
+int btrfs_get_extent_inline_ref_type(const struct extent_buffer *eb,
+ struct btrfs_extent_inline_ref *iref,
+ enum btrfs_inline_ref_type is_data);
+
u64 btrfs_csum_bytes_to_leaves(struct btrfs_fs_info *fs_info, u64 csum_bytes);
static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_fs_info *fs_info,
@@ -2670,8 +2686,7 @@ int btrfs_read_block_groups(struct btrfs_fs_info *info);
int btrfs_can_relocate(struct btrfs_fs_info *fs_info, u64 bytenr);
int btrfs_make_block_group(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info, u64 bytes_used,
- u64 type, u64 chunk_objectid, u64 chunk_offset,
- u64 size);
+ u64 type, u64 chunk_offset, u64 size);
struct btrfs_trans_handle *btrfs_start_trans_remove_block_group(
struct btrfs_fs_info *fs_info,
const u64 chunk_offset);
@@ -2772,8 +2787,8 @@ int btrfs_init_space_info(struct btrfs_fs_info *fs_info);
int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
int __get_raid_index(u64 flags);
-int btrfs_start_write_no_snapshoting(struct btrfs_root *root);
-void btrfs_end_write_no_snapshoting(struct btrfs_root *root);
+int btrfs_start_write_no_snapshotting(struct btrfs_root *root);
+void btrfs_end_write_no_snapshotting(struct btrfs_root *root);
void btrfs_wait_for_snapshot_creation(struct btrfs_root *root);
void check_system_chunk(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info, const u64 type);
@@ -2973,8 +2988,8 @@ int btrfs_del_root_ref(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info,
u64 root_id, u64 ref_id, u64 dirid, u64 *sequence,
const char *name, int name_len);
-int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
- const struct btrfs_key *key);
+int btrfs_del_root(struct btrfs_trans_handle *trans,
+ struct btrfs_fs_info *fs_info, const struct btrfs_key *key);
int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
const struct btrfs_key *key,
struct btrfs_root_item *item);
@@ -3135,21 +3150,6 @@ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,
u64 *orig_start, u64 *orig_block_len,
u64 *ram_bytes);
-/* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */
-#if defined(ClearPageFsMisc) && !defined(ClearPageChecked)
-#define ClearPageChecked ClearPageFsMisc
-#define SetPageChecked SetPageFsMisc
-#define PageChecked PageFsMisc
-#endif
-
-/* This forces readahead on a given range of bytes in an inode */
-static inline void btrfs_force_ra(struct address_space *mapping,
- struct file_ra_state *ra, struct file *file,
- pgoff_t offset, unsigned long req_size)
-{
- page_cache_sync_readahead(mapping, ra, file, offset, req_size);
-}
-
struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry);
int btrfs_set_inode_index(struct btrfs_inode *dir, u64 *index);
int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
@@ -3229,7 +3229,6 @@ long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
int btrfs_ioctl_get_supported_features(void __user *arg);
void btrfs_update_iflags(struct inode *inode);
-void btrfs_inherit_iflags(struct inode *inode, struct inode *dir);
int btrfs_is_empty_uuid(u8 *uuid);
int btrfs_defrag_file(struct inode *inode, struct file *file,
struct btrfs_ioctl_defrag_range_args *range,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.