.is_visible = dirent_is_visible,
};
-const char *bch2_dirent_invalid(const struct bch_fs *c, struct bkey_s_c k)
+int bch2_dirent_invalid(const struct bch_fs *c, struct bkey_s_c k,
+ unsigned flags, struct printbuf *err)
{
struct bkey_s_c_dirent d = bkey_s_c_to_dirent(k);
unsigned len;
- if (bkey_val_bytes(k.k) < sizeof(struct bch_dirent))
- return "value too small";
+ if (bkey_val_bytes(k.k) < sizeof(struct bch_dirent)) {
+ prt_printf(err, "incorrect value size (%zu < %zu)",
+ bkey_val_bytes(k.k), sizeof(*d.v));
+ return -BCH_ERR_invalid_bkey;
+ }
len = bch2_dirent_name_bytes(d);
- if (!len)
- return "empty name";
+ if (!len) {
+ prt_printf(err, "empty name");
+ return -BCH_ERR_invalid_bkey;
+ }
- if (bkey_val_u64s(k.k) > dirent_val_u64s(len))
- return "value too big";
+ if (bkey_val_u64s(k.k) > dirent_val_u64s(len)) {
+ prt_printf(err, "value too big (%zu > %u)",
+ bkey_val_u64s(k.k), dirent_val_u64s(len));
+ return -BCH_ERR_invalid_bkey;
+ }
- if (len > BCH_NAME_MAX)
- return "dirent name too big";
+ if (len > BCH_NAME_MAX) {
+ prt_printf(err, "dirent name too big (%u > %u)",
+ len, BCH_NAME_MAX);
+ return -BCH_ERR_invalid_bkey;
+ }
- if (len == 1 && !memcmp(d.v->d_name, ".", 1))
- return "invalid name";
+ if (len == 1 && !memcmp(d.v->d_name, ".", 1)) {
+ prt_printf(err, "invalid name");
+ return -BCH_ERR_invalid_bkey;
+ }
- if (len == 2 && !memcmp(d.v->d_name, "..", 2))
- return "invalid name";
+ if (len == 2 && !memcmp(d.v->d_name, "..", 2)) {
+ prt_printf(err, "invalid name");
+ return -BCH_ERR_invalid_bkey;
+ }
- if (memchr(d.v->d_name, '/', len))
- return "invalid name";
+ if (memchr(d.v->d_name, '/', len)) {
+ prt_printf(err, "invalid name");
+ return -BCH_ERR_invalid_bkey;
+ }
if (d.v->d_type != DT_SUBVOL &&
- le64_to_cpu(d.v->d_inum) == d.k->p.inode)
- return "dirent points to own directory";
+ le64_to_cpu(d.v->d_inum) == d.k->p.inode) {
+ prt_printf(err, "dirent points to own directory");
+ return -BCH_ERR_invalid_bkey;
+ }
- return NULL;
+ return 0;
}
void bch2_dirent_to_text(struct printbuf *out, struct bch_fs *c,
{
struct bkey_s_c_dirent d = bkey_s_c_to_dirent(k);
- bch_scnmemcpy(out, d.v->d_name,
- bch2_dirent_name_bytes(d));
- pr_buf(out, " -> %llu type %s",
+ prt_printf(out, "%.*s -> %llu type %s",
+ bch2_dirent_name_bytes(d),
+ d.v->d_name,
d.v->d_type != DT_SUBVOL
? le64_to_cpu(d.v->d_inum)
: le32_to_cpu(d.v->d_child_subvol),
{
struct btree_iter src_iter = { NULL };
struct btree_iter dst_iter = { NULL };
- struct bkey_s_c old_src, old_dst;
+ struct bkey_s_c old_src, old_dst = bkey_s_c_null;
struct bkey_i_dirent *new_src = NULL, *new_dst = NULL;
struct bpos dst_pos =
POS(dst_dir.inum, bch2_dirent_hash(dst_hash, dst_name));
bkey_init(&new_src->k);
new_src->k.p = src_iter.pos;
- if (bkey_cmp(dst_pos, src_iter.pos) <= 0 &&
- bkey_cmp(src_iter.pos, dst_iter.pos) < 0) {
+ if (bkey_le(dst_pos, src_iter.pos) &&
+ bkey_lt(src_iter.pos, dst_iter.pos)) {
/*
* We have a hash collision for the new dst key,
* and new_src - the key we're deleting - is between
}
}
- bch2_trans_update(trans, &dst_iter, &new_dst->k_i, 0);
+ ret = bch2_trans_update(trans, &dst_iter, &new_dst->k_i, 0);
+ if (ret)
+ goto out;
out_set_src:
/*
src_update_flags |= BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE;
}
- bch2_trans_update(trans, &src_iter, &new_src->k_i, src_update_flags);
+ ret = bch2_trans_update(trans, &src_iter, &new_src->k_i, src_update_flags);
+ if (ret)
+ goto out;
if (mode == BCH_RENAME_EXCHANGE)
*src_offset = new_src->k.p.offset;
ret = __bch2_dirent_lookup_trans(&trans, &iter, dir, hash_info,
name, inum, 0);
- if (ret == -EINTR)
+ if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
goto retry;
if (!ret)
bch2_trans_iter_exit(&trans, &iter);
if (ret)
return ret;
- for_each_btree_key_norestart(trans, iter, BTREE_ID_dirents,
- SPOS(dir.inum, 0, snapshot), 0, k, ret) {
- if (k.k->p.inode > dir.inum)
- break;
-
+ for_each_btree_key_upto_norestart(trans, iter, BTREE_ID_dirents,
+ SPOS(dir.inum, 0, snapshot),
+ POS(dir.inum, U64_MAX), 0, k, ret)
if (k.k->type == KEY_TYPE_dirent) {
ret = -ENOTEMPTY;
break;
}
- }
bch2_trans_iter_exit(trans, &iter);
return ret;
if (ret)
goto err;
- for_each_btree_key_norestart(&trans, iter, BTREE_ID_dirents,
- SPOS(inum.inum, ctx->pos, snapshot), 0, k, ret) {
- if (k.k->p.inode > inum.inum)
- break;
-
+ for_each_btree_key_upto_norestart(&trans, iter, BTREE_ID_dirents,
+ SPOS(inum.inum, ctx->pos, snapshot),
+ POS(inum.inum, U64_MAX), 0, k, ret) {
if (k.k->type != KEY_TYPE_dirent)
continue;
* read_target looks up subvolumes, we can overflow paths if the
* directory has many subvolumes in it
*/
- if (hweight64(trans.paths_allocated) > BTREE_ITER_MAX / 2) {
- ret = -EINTR;
+ ret = btree_trans_too_many_iters(&trans);
+ if (ret)
break;
- }
}
bch2_trans_iter_exit(&trans, &iter);
err:
- if (ret == -EINTR)
+ if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
goto retry;
bch2_trans_exit(&trans);