From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_PASS,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by dcvr.yhbt.net (Postfix) with ESMTP id 727BF1F4B4 for ; Wed, 27 Jan 2021 15:36:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234684AbhA0PfZ (ORCPT ); Wed, 27 Jan 2021 10:35:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51922 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235666AbhA0PE2 (ORCPT ); Wed, 27 Jan 2021 10:04:28 -0500 Received: from mail-wm1-x32c.google.com (mail-wm1-x32c.google.com [IPv6:2a00:1450:4864:20::32c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A482FC061220 for ; Wed, 27 Jan 2021 07:02:13 -0800 (PST) Received: by mail-wm1-x32c.google.com with SMTP id j18so1799738wmi.3 for ; Wed, 27 Jan 2021 07:02:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=message-id:in-reply-to:references:from:date:subject:fcc :content-transfer-encoding:mime-version:to:cc; bh=Q5wWfy5oAGCO35mqYvKAtPhcZckzIut3LhnPNj7ZkDQ=; b=sfJma4y/tIH88XqZJyxqbKxuofXKtn5ldLfm2V6NrlP/pMx2y9iNw41VRJWSl7so6j 6+UZ0mfzetbN6EH39T/B9xyZ9luweTYS/Y209e72tGbXgM8JjIv/VMwaU8jcIJniefPr 7TfGdhP6c3MRaZPlLNYQQDV1+l77a32iHtOXRq1DkuZq1rJv3F7YQpaALu7gyqQuRF+o LEEijkk17g8ubXfqryjHxoFoxt7/qpFPKlC7kZfgaA8SSt5uOMr6m8t3Kv6HDTTC6wjk UL1bCjwgdz2q/NUkqaTglToodOSao98MDv+Nj+Upv14PrKXVjTDO9OKrwSzyUYUj076A re3g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:in-reply-to:references:from:date :subject:fcc:content-transfer-encoding:mime-version:to:cc; bh=Q5wWfy5oAGCO35mqYvKAtPhcZckzIut3LhnPNj7ZkDQ=; b=ugjkWVa9/FWb8bo7fdKQpJ1tEPvMs/m9Wv1VvoTnaxFwzyiaje/xDF6KrCiIBB7ARc Xg+zihDBvP9BIbvPO3TEtTtAVIsI9lYLiEfwlJYa95BmDep7zp0FZMKbNi1aTRAfWyZ8 MHXT7pTLcjCTK/rF5K66yGMUnlapAun66X/KszuvE8jC+rjPhP3WFiD+b152mLOTNPNF qI8Gr667RtHZXn+GKXh+wqS3VTptRdeSoMBN5d6h+NZtxnohH+FyqFi4N2+6r2uKnsZG WVOLKXzyT9+eh4Ygb8vdU7ZePOEd5Exgbt5w5PRUJt+sqBcBEq6C3K7y2B6lrXjdyD3T pnnA== X-Gm-Message-State: AOAM5316wNs87l0h8xneCRfPi2++kj1kjsQ4k6CnoOMbFqRZycPNZTrg u9muwtMw65r4+r5/pcScY24hFOxNmx4= X-Google-Smtp-Source: ABdhPJz+16SZBofhvFgIx3HyaLl12q3AgyBm1PYDP72wO4gnvDf4atXRmyIGkOfSiP5eR1J95hF7dQ== X-Received: by 2002:a05:600c:258:: with SMTP id 24mr4536280wmj.161.1611759732107; Wed, 27 Jan 2021 07:02:12 -0800 (PST) Received: from [127.0.0.1] ([13.74.141.28]) by smtp.gmail.com with ESMTPSA id s4sm3276008wrt.85.2021.01.27.07.02.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Jan 2021 07:02:11 -0800 (PST) Message-Id: <8744d2785965773a2b561e9e1e91170530d052b1.1611759716.git.gitgitgadget@gmail.com> In-Reply-To: References: From: "Derrick Stolee via GitGitGadget" Date: Wed, 27 Jan 2021 15:01:52 +0000 Subject: [PATCH v2 13/17] commit-graph: use chunk-format read API Fcc: Sent Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit MIME-Version: 1.0 To: git@vger.kernel.org Cc: me@ttaylorr.com, gitster@pobox.com, l.s.r@web.de, szeder.dev@gmail.com, Chris Torek , Derrick Stolee , Derrick Stolee , Derrick Stolee Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org From: Derrick Stolee Instead of parsing the table of contents directly, use the chunk-format API methods read_table_of_contents() and pair_chunk(). While the current implementation loses the duplicate-chunk detection, that will be added in a future change. Signed-off-by: Derrick Stolee --- commit-graph.c | 154 ++++++++++++++-------------------------- t/t5318-commit-graph.sh | 2 +- 2 files changed, 53 insertions(+), 103 deletions(-) diff --git a/commit-graph.c b/commit-graph.c index ba33777dcb8..8aa4881d85d 100644 --- a/commit-graph.c +++ b/commit-graph.c @@ -299,15 +299,43 @@ static int verify_commit_graph_lite(struct commit_graph *g) return 0; } +static int graph_read_oid_lookup(const unsigned char *chunk_start, + size_t chunk_size, void *data) +{ + struct commit_graph *g = data; + g->chunk_oid_lookup = chunk_start; + g->num_commits = chunk_size / g->hash_len; + return 0; +} + +static int graph_read_bloom_data(const unsigned char *chunk_start, + size_t chunk_size, void *data) +{ + struct commit_graph *g = data; + uint32_t hash_version; + g->chunk_bloom_data = chunk_start; + hash_version = get_be32(chunk_start); + + if (hash_version != 1) + return 0; + + g->bloom_filter_settings = xmalloc(sizeof(struct bloom_filter_settings)); + g->bloom_filter_settings->hash_version = hash_version; + g->bloom_filter_settings->num_hashes = get_be32(chunk_start + 4); + g->bloom_filter_settings->bits_per_entry = get_be32(chunk_start + 8); + g->bloom_filter_settings->max_changed_paths = DEFAULT_BLOOM_MAX_CHANGES; + + return 0; +} + struct commit_graph *parse_commit_graph(struct repository *r, void *graph_map, size_t graph_size) { - const unsigned char *data, *chunk_lookup; - uint32_t i; + const unsigned char *data; struct commit_graph *graph; - uint64_t next_chunk_offset; uint32_t graph_signature; unsigned char graph_version, hash_version; + struct chunkfile *cf = NULL; if (!graph_map) return NULL; @@ -356,108 +384,28 @@ struct commit_graph *parse_commit_graph(struct repository *r, return NULL; } - chunk_lookup = data + 8; - next_chunk_offset = get_be64(chunk_lookup + 4); - for (i = 0; i < graph->num_chunks; i++) { - uint32_t chunk_id; - uint64_t chunk_offset = next_chunk_offset; - int chunk_repeated = 0; - - chunk_id = get_be32(chunk_lookup + 0); - - chunk_lookup += GRAPH_CHUNKLOOKUP_WIDTH; - next_chunk_offset = get_be64(chunk_lookup + 4); - - if (chunk_offset > graph_size - the_hash_algo->rawsz) { - error(_("commit-graph improper chunk offset %08x%08x"), (uint32_t)(chunk_offset >> 32), - (uint32_t)chunk_offset); - goto free_and_return; - } - - switch (chunk_id) { - case GRAPH_CHUNKID_OIDFANOUT: - if (graph->chunk_oid_fanout) - chunk_repeated = 1; - else - graph->chunk_oid_fanout = (uint32_t*)(data + chunk_offset); - break; - - case GRAPH_CHUNKID_OIDLOOKUP: - if (graph->chunk_oid_lookup) - chunk_repeated = 1; - else { - graph->chunk_oid_lookup = data + chunk_offset; - graph->num_commits = (next_chunk_offset - chunk_offset) - / graph->hash_len; - } - break; + cf = init_chunkfile(NULL); - case GRAPH_CHUNKID_DATA: - if (graph->chunk_commit_data) - chunk_repeated = 1; - else - graph->chunk_commit_data = data + chunk_offset; - break; - - case GRAPH_CHUNKID_GENERATION_DATA: - if (graph->chunk_generation_data) - chunk_repeated = 1; - else - graph->chunk_generation_data = data + chunk_offset; - break; - - case GRAPH_CHUNKID_GENERATION_DATA_OVERFLOW: - if (graph->chunk_generation_data_overflow) - chunk_repeated = 1; - else - graph->chunk_generation_data_overflow = data + chunk_offset; - break; - - case GRAPH_CHUNKID_EXTRAEDGES: - if (graph->chunk_extra_edges) - chunk_repeated = 1; - else - graph->chunk_extra_edges = data + chunk_offset; - break; - - case GRAPH_CHUNKID_BASE: - if (graph->chunk_base_graphs) - chunk_repeated = 1; - else - graph->chunk_base_graphs = data + chunk_offset; - break; - - case GRAPH_CHUNKID_BLOOMINDEXES: - if (graph->chunk_bloom_indexes) - chunk_repeated = 1; - else if (r->settings.commit_graph_read_changed_paths) - graph->chunk_bloom_indexes = data + chunk_offset; - break; - - case GRAPH_CHUNKID_BLOOMDATA: - if (graph->chunk_bloom_data) - chunk_repeated = 1; - else if (r->settings.commit_graph_read_changed_paths) { - uint32_t hash_version; - graph->chunk_bloom_data = data + chunk_offset; - hash_version = get_be32(data + chunk_offset); - - if (hash_version != 1) - break; + if (read_table_of_contents(cf, graph->data, graph_size, + GRAPH_HEADER_SIZE, graph->num_chunks)) + goto free_and_return; - graph->bloom_filter_settings = xmalloc(sizeof(struct bloom_filter_settings)); - graph->bloom_filter_settings->hash_version = hash_version; - graph->bloom_filter_settings->num_hashes = get_be32(data + chunk_offset + 4); - graph->bloom_filter_settings->bits_per_entry = get_be32(data + chunk_offset + 8); - graph->bloom_filter_settings->max_changed_paths = DEFAULT_BLOOM_MAX_CHANGES; - } - break; - } + pair_chunk(cf, GRAPH_CHUNKID_OIDFANOUT, + (const unsigned char **)&graph->chunk_oid_fanout); + read_chunk(cf, GRAPH_CHUNKID_OIDLOOKUP, graph_read_oid_lookup, graph); + pair_chunk(cf, GRAPH_CHUNKID_DATA, &graph->chunk_commit_data); + pair_chunk(cf, GRAPH_CHUNKID_EXTRAEDGES, &graph->chunk_extra_edges); + pair_chunk(cf, GRAPH_CHUNKID_BASE, &graph->chunk_base_graphs); + pair_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA, + &graph->chunk_generation_data); + pair_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA_OVERFLOW, + &graph->chunk_generation_data_overflow); - if (chunk_repeated) { - error(_("commit-graph chunk id %08x appears multiple times"), chunk_id); - goto free_and_return; - } + if (r->settings.commit_graph_read_changed_paths) { + pair_chunk(cf, GRAPH_CHUNKID_BLOOMINDEXES, + &graph->chunk_bloom_indexes); + read_chunk(cf, GRAPH_CHUNKID_BLOOMDATA, + graph_read_bloom_data, graph); } if (graph->chunk_bloom_indexes && graph->chunk_bloom_data) { @@ -474,9 +422,11 @@ struct commit_graph *parse_commit_graph(struct repository *r, if (verify_commit_graph_lite(graph)) goto free_and_return; + free_chunkfile(cf); return graph; free_and_return: + free_chunkfile(cf); free(graph->bloom_filter_settings); free(graph); return NULL; diff --git a/t/t5318-commit-graph.sh b/t/t5318-commit-graph.sh index fa27df579a5..c7da741284e 100755 --- a/t/t5318-commit-graph.sh +++ b/t/t5318-commit-graph.sh @@ -564,7 +564,7 @@ test_expect_success 'detect bad hash version' ' test_expect_success 'detect low chunk count' ' corrupt_graph_and_verify $GRAPH_BYTE_CHUNK_COUNT "\01" \ - "missing the .* chunk" + "final chunk has non-zero id" ' test_expect_success 'detect missing OID fanout chunk' ' -- gitgitgadget