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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_INODE_H
#define _BCACHEFS_INODE_H
#include "bkey.h"
#include "bkey_methods.h"
#include "opts.h"
#include "snapshot.h"
enum bch_validate_flags;
extern const char * const bch2_inode_opts[];
int bch2_inode_validate(struct bch_fs *, struct bkey_s_c,
enum bch_validate_flags);
int bch2_inode_v2_validate(struct bch_fs *, struct bkey_s_c,
enum bch_validate_flags);
int bch2_inode_v3_validate(struct bch_fs *, struct bkey_s_c,
enum bch_validate_flags);
void bch2_inode_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
int __bch2_inode_has_child_snapshots(struct btree_trans *, struct bpos);
static inline int bch2_inode_has_child_snapshots(struct btree_trans *trans, struct bpos pos)
{
return bch2_snapshot_is_leaf(trans->c, pos.snapshot) <= 0
? __bch2_inode_has_child_snapshots(trans, pos)
: 0;
}
int bch2_trigger_inode(struct btree_trans *, enum btree_id, unsigned,
struct bkey_s_c, struct bkey_s,
enum btree_iter_update_trigger_flags);
#define bch2_bkey_ops_inode ((struct bkey_ops) { \
.key_validate = bch2_inode_validate, \
.val_to_text = bch2_inode_to_text, \
.trigger = bch2_trigger_inode, \
.min_val_size = 16, \
})
#define bch2_bkey_ops_inode_v2 ((struct bkey_ops) { \
.key_validate = bch2_inode_v2_validate, \
.val_to_text = bch2_inode_to_text, \
.trigger = bch2_trigger_inode, \
.min_val_size = 32, \
})
#define bch2_bkey_ops_inode_v3 ((struct bkey_ops) { \
.key_validate = bch2_inode_v3_validate, \
.val_to_text = bch2_inode_to_text, \
.trigger = bch2_trigger_inode, \
.min_val_size = 48, \
})
static inline bool bkey_is_inode(const struct bkey *k)
{
return k->type == KEY_TYPE_inode ||
k->type == KEY_TYPE_inode_v2 ||
k->type == KEY_TYPE_inode_v3;
}
int bch2_inode_generation_validate(struct bch_fs *, struct bkey_s_c,
enum bch_validate_flags);
void bch2_inode_generation_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
#define bch2_bkey_ops_inode_generation ((struct bkey_ops) { \
.key_validate = bch2_inode_generation_validate, \
.val_to_text = bch2_inode_generation_to_text, \
.min_val_size = 8, \
})
#if 0
typedef struct {
u64 lo;
u32 hi;
} __packed __aligned(4) u96;
#endif
typedef u64 u96;
struct bch_inode_unpacked {
u64 bi_inum;
u32 bi_snapshot;
u64 bi_journal_seq;
__le64 bi_hash_seed;
u64 bi_size;
u64 bi_sectors;
u64 bi_version;
u32 bi_flags;
u16 bi_mode;
#define x(_name, _bits) u##_bits _name;
BCH_INODE_FIELDS_v3()
#undef x
};
struct bkey_inode_buf {
struct bkey_i_inode_v3 inode;
#define x(_name, _bits) + 8 + _bits / 8
u8 _pad[0 + BCH_INODE_FIELDS_v3()];
#undef x
};
void bch2_inode_pack(struct bkey_inode_buf *, const struct bch_inode_unpacked *);
int bch2_inode_unpack(struct bkey_s_c, struct bch_inode_unpacked *);
struct bkey_i *bch2_inode_to_v3(struct btree_trans *, struct bkey_i *);
void bch2_inode_unpacked_to_text(struct printbuf *, struct bch_inode_unpacked *);
int __bch2_inode_peek(struct btree_trans *, struct btree_iter *,
struct bch_inode_unpacked *, subvol_inum, unsigned, bool);
static inline int bch2_inode_peek_nowarn(struct btree_trans *trans,
struct btree_iter *iter,
struct bch_inode_unpacked *inode,
subvol_inum inum, unsigned flags)
{
return __bch2_inode_peek(trans, iter, inode, inum, flags, false);
}
static inline int bch2_inode_peek(struct btree_trans *trans,
struct btree_iter *iter,
struct bch_inode_unpacked *inode,
subvol_inum inum, unsigned flags)
{
return __bch2_inode_peek(trans, iter, inode, inum, flags, true);
int ret = bch2_inode_peek_nowarn(trans, iter, inode, inum, flags);
return ret;
}
int bch2_inode_write_flags(struct btree_trans *, struct btree_iter *,
struct bch_inode_unpacked *, enum btree_iter_update_trigger_flags);
static inline int bch2_inode_write(struct btree_trans *trans,
struct btree_iter *iter,
struct bch_inode_unpacked *inode)
{
return bch2_inode_write_flags(trans, iter, inode, 0);
}
int __bch2_fsck_write_inode(struct btree_trans *, struct bch_inode_unpacked *);
int bch2_fsck_write_inode(struct btree_trans *, struct bch_inode_unpacked *);
void bch2_inode_init_early(struct bch_fs *,
struct bch_inode_unpacked *);
void bch2_inode_init_late(struct bch_inode_unpacked *, u64,
uid_t, gid_t, umode_t, dev_t,
struct bch_inode_unpacked *);
void bch2_inode_init(struct bch_fs *, struct bch_inode_unpacked *,
uid_t, gid_t, umode_t, dev_t,
struct bch_inode_unpacked *);
int bch2_inode_create(struct btree_trans *, struct btree_iter *,
struct bch_inode_unpacked *, u32, u64);
int bch2_inode_rm(struct bch_fs *, subvol_inum);
int bch2_inode_find_by_inum_nowarn_trans(struct btree_trans *,
subvol_inum,
struct bch_inode_unpacked *);
int bch2_inode_find_by_inum_trans(struct btree_trans *, subvol_inum,
struct bch_inode_unpacked *);
int bch2_inode_find_by_inum(struct bch_fs *, subvol_inum,
struct bch_inode_unpacked *);
#define inode_opt_get(_c, _inode, _name) \
((_inode)->bi_##_name ? (_inode)->bi_##_name - 1 : (_c)->opts._name)
static inline void bch2_inode_opt_set(struct bch_inode_unpacked *inode,
enum inode_opt_id id, u64 v)
{
switch (id) {
#define x(_name, ...) \
case Inode_opt_##_name: \
inode->bi_##_name = v; \
break;
BCH_INODE_OPTS()
#undef x
default:
BUG();
}
}
static inline u64 bch2_inode_opt_get(struct bch_inode_unpacked *inode,
enum inode_opt_id id)
{
switch (id) {
#define x(_name, ...) \
case Inode_opt_##_name: \
return inode->bi_##_name;
BCH_INODE_OPTS()
#undef x
default:
BUG();
}
}
static inline u8 mode_to_type(umode_t mode)
{
return (mode >> 12) & 15;
}
static inline u8 inode_d_type(struct bch_inode_unpacked *inode)
{
return inode->bi_subvol ? DT_SUBVOL : mode_to_type(inode->bi_mode);
}
static inline u32 bch2_inode_flags(struct bkey_s_c k)
{
switch (k.k->type) {
case KEY_TYPE_inode:
return le32_to_cpu(bkey_s_c_to_inode(k).v->bi_flags);
case KEY_TYPE_inode_v2:
return le64_to_cpu(bkey_s_c_to_inode_v2(k).v->bi_flags);
case KEY_TYPE_inode_v3:
return le64_to_cpu(bkey_s_c_to_inode_v3(k).v->bi_flags);
default:
return 0;
}
}
/* i_nlink: */
static inline unsigned nlink_bias(umode_t mode)
{
return S_ISDIR(mode) ? 2 : 1;
}
static inline unsigned bch2_inode_nlink_get(struct bch_inode_unpacked *bi)
{
return bi->bi_flags & BCH_INODE_unlinked
? 0
: bi->bi_nlink + nlink_bias(bi->bi_mode);
}
static inline void bch2_inode_nlink_set(struct bch_inode_unpacked *bi,
unsigned nlink)
{
if (nlink) {
bi->bi_nlink = nlink - nlink_bias(bi->bi_mode);
bi->bi_flags &= ~BCH_INODE_unlinked;
} else {
bi->bi_nlink = 0;
bi->bi_flags |= BCH_INODE_unlinked;
}
}
int bch2_inode_nlink_inc(struct bch_inode_unpacked *);
void bch2_inode_nlink_dec(struct btree_trans *, struct bch_inode_unpacked *);
static inline bool bch2_inode_should_have_bp(struct bch_inode_unpacked *inode)
{
bool inode_has_bp = inode->bi_dir || inode->bi_dir_offset;
return S_ISDIR(inode->bi_mode) ||
(!inode->bi_nlink && inode_has_bp);
}
struct bch_opts bch2_inode_opts_to_opts(struct bch_inode_unpacked *);
void bch2_inode_opts_get(struct bch_io_opts *, struct bch_fs *,
struct bch_inode_unpacked *);
int bch2_inum_opts_get(struct btree_trans*, subvol_inum, struct bch_io_opts *);
int bch2_inode_rm_snapshot(struct btree_trans *, u64, u32);
int bch2_delete_dead_inodes(struct bch_fs *);
#endif /* _BCACHEFS_INODE_H */
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