+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-
-#include "bcachefs.h"
-#include "backpointers.h"
-#include "bkey_methods.h"
-#include "btree_cache.h"
-#include "btree_types.h"
-#include "alloc_background.h"
-#include "dirent.h"
-#include "ec.h"
-#include "error.h"
-#include "extents.h"
-#include "inode.h"
-#include "io_misc.h"
-#include "lru.h"
-#include "quota.h"
-#include "reflink.h"
-#include "snapshot.h"
-#include "subvolume.h"
-#include "xattr.h"
-
-const char * const bch2_bkey_types[] = {
-#define x(name, nr) #name,
- BCH_BKEY_TYPES()
-#undef x
- NULL
-};
-
-static int deleted_key_invalid(struct bch_fs *c, struct bkey_s_c k,
- enum bkey_invalid_flags flags, struct printbuf *err)
-{
- return 0;
-}
-
-#define bch2_bkey_ops_deleted ((struct bkey_ops) { \
- .key_invalid = deleted_key_invalid, \
-})
-
-#define bch2_bkey_ops_whiteout ((struct bkey_ops) { \
- .key_invalid = deleted_key_invalid, \
-})
-
-static int empty_val_key_invalid(struct bch_fs *c, struct bkey_s_c k,
- enum bkey_invalid_flags flags, struct printbuf *err)
-{
- int ret = 0;
-
- bkey_fsck_err_on(bkey_val_bytes(k.k), c, err,
- bkey_val_size_nonzero,
- "incorrect value size (%zu != 0)",
- bkey_val_bytes(k.k));
-fsck_err:
- return ret;
-}
-
-#define bch2_bkey_ops_error ((struct bkey_ops) { \
- .key_invalid = empty_val_key_invalid, \
-})
-
-static int key_type_cookie_invalid(struct bch_fs *c, struct bkey_s_c k,
- enum bkey_invalid_flags flags, struct printbuf *err)
-{
- return 0;
-}
-
-#define bch2_bkey_ops_cookie ((struct bkey_ops) { \
- .key_invalid = key_type_cookie_invalid, \
- .min_val_size = 8, \
-})
-
-#define bch2_bkey_ops_hash_whiteout ((struct bkey_ops) {\
- .key_invalid = empty_val_key_invalid, \
-})
-
-static int key_type_inline_data_invalid(struct bch_fs *c, struct bkey_s_c k,
- enum bkey_invalid_flags flags, struct printbuf *err)
-{
- return 0;
-}
-
-static void key_type_inline_data_to_text(struct printbuf *out, struct bch_fs *c,
- struct bkey_s_c k)
-{
- struct bkey_s_c_inline_data d = bkey_s_c_to_inline_data(k);
- unsigned datalen = bkey_inline_data_bytes(k.k);
-
- prt_printf(out, "datalen %u: %*phN",
- datalen, min(datalen, 32U), d.v->data);
-}
-
-#define bch2_bkey_ops_inline_data ((struct bkey_ops) { \
- .key_invalid = key_type_inline_data_invalid, \
- .val_to_text = key_type_inline_data_to_text, \
-})
-
-static bool key_type_set_merge(struct bch_fs *c, struct bkey_s l, struct bkey_s_c r)
-{
- bch2_key_resize(l.k, l.k->size + r.k->size);
- return true;
-}
-
-#define bch2_bkey_ops_set ((struct bkey_ops) { \
- .key_invalid = empty_val_key_invalid, \
- .key_merge = key_type_set_merge, \
-})
-
-const struct bkey_ops bch2_bkey_ops[] = {
-#define x(name, nr) [KEY_TYPE_##name] = bch2_bkey_ops_##name,
- BCH_BKEY_TYPES()
-#undef x
-};
-
-const struct bkey_ops bch2_bkey_null_ops = {
-};
-
-int bch2_bkey_val_invalid(struct bch_fs *c, struct bkey_s_c k,
- enum bkey_invalid_flags flags,
- struct printbuf *err)
-{
- const struct bkey_ops *ops = bch2_bkey_type_ops(k.k->type);
- int ret = 0;
-
- bkey_fsck_err_on(bkey_val_bytes(k.k) < ops->min_val_size, c, err,
- bkey_val_size_too_small,
- "bad val size (%zu < %u)",
- bkey_val_bytes(k.k), ops->min_val_size);
-
- if (!ops->key_invalid)
- return 0;
-
- ret = ops->key_invalid(c, k, flags, err);
-fsck_err:
- return ret;
-}
-
-static u64 bch2_key_types_allowed[] = {
- [BKEY_TYPE_btree] =
- BIT_ULL(KEY_TYPE_deleted)|
- BIT_ULL(KEY_TYPE_btree_ptr)|
- BIT_ULL(KEY_TYPE_btree_ptr_v2),
-#define x(name, nr, flags, keys) [BKEY_TYPE_##name] = BIT_ULL(KEY_TYPE_deleted)|keys,
- BCH_BTREE_IDS()
-#undef x
-};
-
-const char *bch2_btree_node_type_str(enum btree_node_type type)
-{
- return type == BKEY_TYPE_btree ? "internal btree node" : bch2_btree_id_str(type - 1);
-}
-
-int __bch2_bkey_invalid(struct bch_fs *c, struct bkey_s_c k,
- enum btree_node_type type,
- enum bkey_invalid_flags flags,
- struct printbuf *err)
-{
- int ret = 0;
-
- bkey_fsck_err_on(k.k->u64s < BKEY_U64s, c, err,
- bkey_u64s_too_small,
- "u64s too small (%u < %zu)", k.k->u64s, BKEY_U64s);
-
- if (type >= BKEY_TYPE_NR)
- return 0;
-
- bkey_fsck_err_on((flags & BKEY_INVALID_COMMIT) &&
- !(bch2_key_types_allowed[type] & BIT_ULL(k.k->type)), c, err,
- bkey_invalid_type_for_btree,
- "invalid key type for btree %s (%s)",
- bch2_btree_node_type_str(type), bch2_bkey_types[k.k->type]);
-
- if (btree_node_type_is_extents(type) && !bkey_whiteout(k.k)) {
- bkey_fsck_err_on(k.k->size == 0, c, err,
- bkey_extent_size_zero,
- "size == 0");
-
- bkey_fsck_err_on(k.k->size > k.k->p.offset, c, err,
- bkey_extent_size_greater_than_offset,
- "size greater than offset (%u > %llu)",
- k.k->size, k.k->p.offset);
- } else {
- bkey_fsck_err_on(k.k->size, c, err,
- bkey_size_nonzero,
- "size != 0");
- }
-
- if (type != BKEY_TYPE_btree) {
- enum btree_id btree = type - 1;
-
- if (btree_type_has_snapshots(btree)) {
- bkey_fsck_err_on(!k.k->p.snapshot, c, err,
- bkey_snapshot_zero,
- "snapshot == 0");
- } else if (!btree_type_has_snapshot_field(btree)) {
- bkey_fsck_err_on(k.k->p.snapshot, c, err,
- bkey_snapshot_nonzero,
- "nonzero snapshot");
- } else {
- /*
- * btree uses snapshot field but it's not required to be
- * nonzero
- */
- }
-
- bkey_fsck_err_on(bkey_eq(k.k->p, POS_MAX), c, err,
- bkey_at_pos_max,
- "key at POS_MAX");
- }
-fsck_err:
- return ret;
-}
-
-int bch2_bkey_invalid(struct bch_fs *c, struct bkey_s_c k,
- enum btree_node_type type,
- enum bkey_invalid_flags flags,
- struct printbuf *err)
-{
- return __bch2_bkey_invalid(c, k, type, flags, err) ?:
- bch2_bkey_val_invalid(c, k, flags, err);
-}
-
-int bch2_bkey_in_btree_node(struct bch_fs *c, struct btree *b,
- struct bkey_s_c k, struct printbuf *err)
-{
- int ret = 0;
-
- bkey_fsck_err_on(bpos_lt(k.k->p, b->data->min_key), c, err,
- bkey_before_start_of_btree_node,
- "key before start of btree node");
-
- bkey_fsck_err_on(bpos_gt(k.k->p, b->data->max_key), c, err,
- bkey_after_end_of_btree_node,
- "key past end of btree node");
-fsck_err:
- return ret;
-}
-
-void bch2_bpos_to_text(struct printbuf *out, struct bpos pos)
-{
- if (bpos_eq(pos, POS_MIN))
- prt_printf(out, "POS_MIN");
- else if (bpos_eq(pos, POS_MAX))
- prt_printf(out, "POS_MAX");
- else if (bpos_eq(pos, SPOS_MAX))
- prt_printf(out, "SPOS_MAX");
- else {
- if (pos.inode == U64_MAX)
- prt_printf(out, "U64_MAX");
- else
- prt_printf(out, "%llu", pos.inode);
- prt_printf(out, ":");
- if (pos.offset == U64_MAX)
- prt_printf(out, "U64_MAX");
- else
- prt_printf(out, "%llu", pos.offset);
- prt_printf(out, ":");
- if (pos.snapshot == U32_MAX)
- prt_printf(out, "U32_MAX");
- else
- prt_printf(out, "%u", pos.snapshot);
- }
-}
-
-void bch2_bkey_to_text(struct printbuf *out, const struct bkey *k)
-{
- if (k) {
- prt_printf(out, "u64s %u type ", k->u64s);
-
- if (k->type < KEY_TYPE_MAX)
- prt_printf(out, "%s ", bch2_bkey_types[k->type]);
- else
- prt_printf(out, "%u ", k->type);
-
- bch2_bpos_to_text(out, k->p);
-
- prt_printf(out, " len %u ver %llu", k->size, k->version.lo);
- } else {
- prt_printf(out, "(null)");
- }
-}
-
-void bch2_val_to_text(struct printbuf *out, struct bch_fs *c,
- struct bkey_s_c k)
-{
- const struct bkey_ops *ops = bch2_bkey_type_ops(k.k->type);
-
- if (likely(ops->val_to_text))
- ops->val_to_text(out, c, k);
-}
-
-void bch2_bkey_val_to_text(struct printbuf *out, struct bch_fs *c,
- struct bkey_s_c k)
-{
- bch2_bkey_to_text(out, k.k);
-
- if (bkey_val_bytes(k.k)) {
- prt_printf(out, ": ");
- bch2_val_to_text(out, c, k);
- }
-}
-
-void bch2_bkey_swab_val(struct bkey_s k)
-{
- const struct bkey_ops *ops = bch2_bkey_type_ops(k.k->type);
-
- if (ops->swab)
- ops->swab(k);
-}
-
-bool bch2_bkey_normalize(struct bch_fs *c, struct bkey_s k)
-{
- const struct bkey_ops *ops = bch2_bkey_type_ops(k.k->type);
-
- return ops->key_normalize
- ? ops->key_normalize(c, k)
- : false;
-}
-
-bool bch2_bkey_merge(struct bch_fs *c, struct bkey_s l, struct bkey_s_c r)
-{
- const struct bkey_ops *ops = bch2_bkey_type_ops(l.k->type);
-
- return ops->key_merge &&
- bch2_bkey_maybe_mergable(l.k, r.k) &&
- (u64) l.k->size + r.k->size <= KEY_SIZE_MAX &&
- !bch2_key_merging_disabled &&
- ops->key_merge(c, l, r);
-}
-
-static const struct old_bkey_type {
- u8 btree_node_type;
- u8 old;
- u8 new;
-} bkey_renumber_table[] = {
- {BKEY_TYPE_btree, 128, KEY_TYPE_btree_ptr },
- {BKEY_TYPE_extents, 128, KEY_TYPE_extent },
- {BKEY_TYPE_extents, 129, KEY_TYPE_extent },
- {BKEY_TYPE_extents, 130, KEY_TYPE_reservation },
- {BKEY_TYPE_inodes, 128, KEY_TYPE_inode },
- {BKEY_TYPE_inodes, 130, KEY_TYPE_inode_generation },
- {BKEY_TYPE_dirents, 128, KEY_TYPE_dirent },
- {BKEY_TYPE_dirents, 129, KEY_TYPE_hash_whiteout },
- {BKEY_TYPE_xattrs, 128, KEY_TYPE_xattr },
- {BKEY_TYPE_xattrs, 129, KEY_TYPE_hash_whiteout },
- {BKEY_TYPE_alloc, 128, KEY_TYPE_alloc },
- {BKEY_TYPE_quotas, 128, KEY_TYPE_quota },
-};
-
-void bch2_bkey_renumber(enum btree_node_type btree_node_type,
- struct bkey_packed *k,
- int write)
-{
- const struct old_bkey_type *i;
-
- for (i = bkey_renumber_table;
- i < bkey_renumber_table + ARRAY_SIZE(bkey_renumber_table);
- i++)
- if (btree_node_type == i->btree_node_type &&
- k->type == (write ? i->new : i->old)) {
- k->type = write ? i->old : i->new;
- break;
- }
-}
-
-void __bch2_bkey_compat(unsigned level, enum btree_id btree_id,
- unsigned version, unsigned big_endian,
- int write,
- struct bkey_format *f,
- struct bkey_packed *k)
-{
- const struct bkey_ops *ops;
- struct bkey uk;
- unsigned nr_compat = 5;
- int i;
-
- /*
- * Do these operations in reverse order in the write path:
- */
-
- for (i = 0; i < nr_compat; i++)
- switch (!write ? i : nr_compat - 1 - i) {
- case 0:
- if (big_endian != CPU_BIG_ENDIAN)
- bch2_bkey_swab_key(f, k);
- break;
- case 1:
- if (version < bcachefs_metadata_version_bkey_renumber)
- bch2_bkey_renumber(__btree_node_type(level, btree_id), k, write);
- break;
- case 2:
- if (version < bcachefs_metadata_version_inode_btree_change &&
- btree_id == BTREE_ID_inodes) {
- if (!bkey_packed(k)) {
- struct bkey_i *u = packed_to_bkey(k);
-
- swap(u->k.p.inode, u->k.p.offset);
- } else if (f->bits_per_field[BKEY_FIELD_INODE] &&
- f->bits_per_field[BKEY_FIELD_OFFSET]) {
- struct bkey_format tmp = *f, *in = f, *out = &tmp;
-
- swap(tmp.bits_per_field[BKEY_FIELD_INODE],
- tmp.bits_per_field[BKEY_FIELD_OFFSET]);
- swap(tmp.field_offset[BKEY_FIELD_INODE],
- tmp.field_offset[BKEY_FIELD_OFFSET]);
-
- if (!write)
- swap(in, out);
-
- uk = __bch2_bkey_unpack_key(in, k);
- swap(uk.p.inode, uk.p.offset);
- BUG_ON(!bch2_bkey_pack_key(k, &uk, out));
- }
- }
- break;
- case 3:
- if (version < bcachefs_metadata_version_snapshot &&
- (level || btree_type_has_snapshots(btree_id))) {
- struct bkey_i *u = packed_to_bkey(k);
-
- if (u) {
- u->k.p.snapshot = write
- ? 0 : U32_MAX;
- } else {
- u64 min_packed = le64_to_cpu(f->field_offset[BKEY_FIELD_SNAPSHOT]);
- u64 max_packed = min_packed +
- ~(~0ULL << f->bits_per_field[BKEY_FIELD_SNAPSHOT]);
-
- uk = __bch2_bkey_unpack_key(f, k);
- uk.p.snapshot = write
- ? min_packed : min_t(u64, U32_MAX, max_packed);
-
- BUG_ON(!bch2_bkey_pack_key(k, &uk, f));
- }
- }
-
- break;
- case 4: {
- struct bkey_s u;
-
- if (!bkey_packed(k)) {
- u = bkey_i_to_s(packed_to_bkey(k));
- } else {
- uk = __bch2_bkey_unpack_key(f, k);
- u.k = &uk;
- u.v = bkeyp_val(f, k);
- }
-
- if (big_endian != CPU_BIG_ENDIAN)
- bch2_bkey_swab_val(u);
-
- ops = bch2_bkey_type_ops(k->type);
-
- if (ops->compat)
- ops->compat(btree_id, version, big_endian, write, u);
- break;
- }
- default:
- BUG();
- }
-}
projects / bcachefs-tools-debian / blobdiff