diff options
| -rw-r--r-- | Documentation/technical/commit-graph-format.txt | 9 | ||||
| -rw-r--r-- | commit-graph.c | 9 | ||||
| -rwxr-xr-x | t/t4216-log-bloom.sh | 9 | ||||
| -rwxr-xr-x | t/t5318-commit-graph.sh | 38 | ||||
| -rwxr-xr-x | t/t5324-split-commit-graph.sh | 5 |
5 files changed, 62 insertions, 8 deletions
diff --git a/Documentation/technical/commit-graph-format.txt b/Documentation/technical/commit-graph-format.txt index 440541045d..6ddbceba15 100644 --- a/Documentation/technical/commit-graph-format.txt +++ b/Documentation/technical/commit-graph-format.txt @@ -42,8 +42,13 @@ HEADER: 1-byte version number: Currently, the only valid version is 1. - 1-byte Hash Version (1 = SHA-1) - We infer the hash length (H) from this value. + 1-byte Hash Version + We infer the hash length (H) from this value: + 1 => SHA-1 + 2 => SHA-256 + If the hash type does not match the repository's hash algorithm, the + commit-graph file should be ignored with a warning presented to the + user. 1-byte number (C) of "chunks" diff --git a/commit-graph.c b/commit-graph.c index e51c91dd5b..0ed003e218 100644 --- a/commit-graph.c +++ b/commit-graph.c @@ -179,7 +179,14 @@ static char *get_chain_filename(struct object_directory *odb) static uint8_t oid_version(void) { - return 1; + switch (hash_algo_by_ptr(the_hash_algo)) { + case GIT_HASH_SHA1: + return 1; + case GIT_HASH_SHA256: + return 2; + default: + die(_("invalid hash version")); + } } static struct commit_graph *alloc_commit_graph(void) diff --git a/t/t4216-log-bloom.sh b/t/t4216-log-bloom.sh index c21cc160f3..4bb9e9dbe2 100755 --- a/t/t4216-log-bloom.sh +++ b/t/t4216-log-bloom.sh @@ -30,12 +30,17 @@ test_expect_success 'setup test - repo, commits, commit graph, log outputs' ' rm file_to_be_deleted && git add . && git commit -m "file removed" && - git commit-graph write --reachable --changed-paths + git commit-graph write --reachable --changed-paths && + + test_oid_cache <<-EOF + oid_version sha1:1 + oid_version sha256:2 + EOF ' graph_read_expect () { NUM_CHUNKS=5 cat >expect <<- EOF - header: 43475048 1 1 $NUM_CHUNKS 0 + header: 43475048 1 $(test_oid oid_version) $NUM_CHUNKS 0 num_commits: $1 chunks: oid_fanout oid_lookup commit_metadata bloom_indexes bloom_data EOF diff --git a/t/t5318-commit-graph.sh b/t/t5318-commit-graph.sh index 044cf8a3de..2ed0c1544d 100755 --- a/t/t5318-commit-graph.sh +++ b/t/t5318-commit-graph.sh @@ -10,7 +10,12 @@ test_expect_success 'setup full repo' ' cd "$TRASH_DIRECTORY/full" && git init && git config core.commitGraph true && - objdir=".git/objects" + objdir=".git/objects" && + + test_oid_cache <<-EOF + oid_version sha1:1 + oid_version sha256:2 + EOF ' test_expect_success POSIXPERM 'tweak umask for modebit tests' ' @@ -77,7 +82,7 @@ graph_read_expect() { NUM_CHUNKS=$((3 + $(echo "$2" | wc -w))) fi cat >expect <<- EOF - header: 43475048 1 1 $NUM_CHUNKS 0 + header: 43475048 1 $(test_oid oid_version) $NUM_CHUNKS 0 num_commits: $1 chunks: oid_fanout oid_lookup commit_metadata$OPTIONAL EOF @@ -412,6 +417,35 @@ test_expect_success 'replace-objects invalidates commit-graph' ' ) ' +test_expect_success 'warn on improper hash version' ' + git init --object-format=sha1 sha1 && + ( + cd sha1 && + test_commit 1 && + git commit-graph write --reachable && + mv .git/objects/info/commit-graph ../cg-sha1 + ) && + git init --object-format=sha256 sha256 && + ( + cd sha256 && + test_commit 1 && + git commit-graph write --reachable && + mv .git/objects/info/commit-graph ../cg-sha256 + ) && + ( + cd sha1 && + mv ../cg-sha256 .git/objects/info/commit-graph && + git log -1 2>err && + test_i18ngrep "commit-graph hash version 2 does not match version 1" err + ) && + ( + cd sha256 && + mv ../cg-sha1 .git/objects/info/commit-graph && + git log -1 2>err && + test_i18ngrep "commit-graph hash version 1 does not match version 2" err + ) +' + # the verify tests below expect the commit-graph to contain # exactly the commits reachable from the commits/8 branch. # If the file changes the set of commits in the list, then the diff --git a/t/t5324-split-commit-graph.sh b/t/t5324-split-commit-graph.sh index ea28d522b8..18216463c7 100755 --- a/t/t5324-split-commit-graph.sh +++ b/t/t5324-split-commit-graph.sh @@ -18,6 +18,9 @@ test_expect_success 'setup repo' ' base sha1:1376 base sha256:1496 + + oid_version sha1:1 + oid_version sha256:2 EOM ' @@ -28,7 +31,7 @@ graph_read_expect() { NUM_BASE=$2 fi cat >expect <<- EOF - header: 43475048 1 1 3 $NUM_BASE + header: 43475048 1 $(test_oid oid_version) 3 $NUM_BASE num_commits: $1 chunks: oid_fanout oid_lookup commit_metadata EOF |