From f1141b43911441f3c5d0fda49d05a6433da372a3 Mon Sep 17 00:00:00 2001 From: Patrick Steinhardt Date: Fri, 15 Aug 2025 07:49:49 +0200 Subject: commit-graph: refactor `parse_commit_graph()` to take a repository Refactor `parse_commit_graph()` so that it takes a repository instead of taking repository settings. On the one hand this allows us to get rid of instances where we access `the_hash_algo` by using the repository's hash algorithm instead. On the other hand it also allows us to move the call of `prepare_repo_settings()` into the function itself. Note that there's one small catch, as the commit-graph fuzzer calls this function directly without having a fully functional repository at hand. And while the fuzzer already initializes `the_repository` with relevant info, the call to `prepare_repo_settings()` would fail because we don't have a fully-initialized repository. Work around the issue by also settings `settings.initialized` to pretend that we've already read the settings. While at it, remove the redundant `parse_commit_graph()` declaration in the fuzzer. It was added together with aa658574bf (commit-graph, fuzz: add fuzzer for commit-graph, 2019-01-15), but as we also declared the same function in "commit-graph.h" it wasn't ever needed. Signed-off-by: Patrick Steinhardt Signed-off-by: Junio C Hamano --- commit-graph.c | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-) (limited to 'commit-graph.c') diff --git a/commit-graph.c b/commit-graph.c index 6cdaff26c2..55a8ce0739 100644 --- a/commit-graph.c +++ b/commit-graph.c @@ -272,9 +272,8 @@ struct commit_graph *load_commit_graph_one_fd_st(struct repository *r, } graph_map = xmmap(NULL, graph_size, PROT_READ, MAP_PRIVATE, fd, 0); close(fd); - prepare_repo_settings(r); - ret = parse_commit_graph(&r->settings, graph_map, graph_size); + ret = parse_commit_graph(r, graph_map, graph_size); if (ret) ret->odb_source = source; else @@ -374,7 +373,7 @@ static int graph_read_bloom_data(const unsigned char *chunk_start, return 0; } -struct commit_graph *parse_commit_graph(struct repo_settings *s, +struct commit_graph *parse_commit_graph(struct repository *r, void *graph_map, size_t graph_size) { const unsigned char *data; @@ -386,7 +385,7 @@ struct commit_graph *parse_commit_graph(struct repo_settings *s, if (!graph_map) return NULL; - if (graph_size < graph_min_size(the_hash_algo)) + if (graph_size < graph_min_size(r->hash_algo)) return NULL; data = (const unsigned char *)graph_map; @@ -406,22 +405,22 @@ struct commit_graph *parse_commit_graph(struct repo_settings *s, } hash_version = *(unsigned char*)(data + 5); - if (hash_version != oid_version(the_hash_algo)) { + if (hash_version != oid_version(r->hash_algo)) { error(_("commit-graph hash version %X does not match version %X"), - hash_version, oid_version(the_hash_algo)); + hash_version, oid_version(r->hash_algo)); return NULL; } graph = alloc_commit_graph(); - graph->hash_algo = the_hash_algo; + graph->hash_algo = r->hash_algo; graph->num_chunks = *(unsigned char*)(data + 6); graph->data = graph_map; graph->data_len = graph_size; if (graph_size < GRAPH_HEADER_SIZE + (graph->num_chunks + 1) * CHUNK_TOC_ENTRY_SIZE + - GRAPH_FANOUT_SIZE + the_hash_algo->rawsz) { + GRAPH_FANOUT_SIZE + r->hash_algo->rawsz) { error(_("commit-graph file is too small to hold %u chunks"), graph->num_chunks); free(graph); @@ -452,7 +451,9 @@ struct commit_graph *parse_commit_graph(struct repo_settings *s, pair_chunk(cf, GRAPH_CHUNKID_BASE, &graph->chunk_base_graphs, &graph->chunk_base_graphs_size); - if (s->commit_graph_generation_version >= 2) { + prepare_repo_settings(r); + + if (r->settings.commit_graph_generation_version >= 2) { read_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA, graph_read_generation_data, graph); pair_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA_OVERFLOW, @@ -463,7 +464,7 @@ struct commit_graph *parse_commit_graph(struct repo_settings *s, graph->read_generation_data = 1; } - if (s->commit_graph_changed_paths_version) { + if (r->settings.commit_graph_changed_paths_version) { read_chunk(cf, GRAPH_CHUNKID_BLOOMINDEXES, graph_read_bloom_index, graph); read_chunk(cf, GRAPH_CHUNKID_BLOOMDATA, @@ -480,7 +481,7 @@ struct commit_graph *parse_commit_graph(struct repo_settings *s, } oidread(&graph->oid, graph->data + graph->data_len - graph->hash_algo->rawsz, - the_repository->hash_algo); + r->hash_algo); free_chunkfile(cf); return graph; -- cgit v1.2.3