diff options
Diffstat (limited to 'fs/bcachefs/inode.c')
| -rw-r--r-- | fs/bcachefs/inode.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/fs/bcachefs/inode.c b/fs/bcachefs/inode.c index f192536558c1..fc38cfb9e939 100644 --- a/fs/bcachefs/inode.c +++ b/fs/bcachefs/inode.c @@ -181,6 +181,53 @@ int bch2_inode_unpack(struct bkey_s_c_inode inode, return 0; } +struct btree_iter *bch2_inode_peek(struct btree_trans *trans, + struct bch_inode_unpacked *inode, + u64 inum, unsigned flags) +{ + struct btree_iter *iter; + struct bkey_s_c k; + int ret; + + iter = bch2_trans_get_iter(trans, BTREE_ID_INODES, POS(inum, 0), + BTREE_ITER_SLOTS|flags); + if (IS_ERR(iter)) + return iter; + + k = bch2_btree_iter_peek_slot(iter); + ret = bkey_err(k); + if (ret) + goto err; + + ret = k.k->type == KEY_TYPE_inode ? 0 : -EIO; + if (ret) + goto err; + + ret = bch2_inode_unpack(bkey_s_c_to_inode(k), inode); + if (ret) + goto err; + + return iter; +err: + bch2_trans_iter_put(trans, iter); + return ERR_PTR(ret); +} + +int bch2_inode_write(struct btree_trans *trans, + struct btree_iter *iter, + struct bch_inode_unpacked *inode) +{ + struct bkey_inode_buf *inode_p; + + inode_p = bch2_trans_kmalloc(trans, sizeof(*inode_p)); + if (IS_ERR(inode_p)) + return PTR_ERR(inode_p); + + bch2_inode_pack(inode_p, inode); + bch2_trans_update(trans, iter, &inode_p->inode.k_i); + return 0; +} + const char *bch2_inode_invalid(const struct bch_fs *c, struct bkey_s_c k) { struct bkey_s_c_inode inode = bkey_s_c_to_inode(k); |