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[PATCH v2 4/4] commit-graph.c: ensure graph layers respect core.sharedRepository

From
Taylor Blau <me@ttaylorr.com>
Date
Apr 27, 2020, 16:28 UTC
Message-ID
<f83437f130812d172167d335ba2d13b1545a9f58.1588004647.git.me@ttaylorr.com>
In-Reply-To
<cover.1588004647.git.me@ttaylorr.com>

Non-layered commit-graphs use 'adjust_shared_perm' to make the commit-graph file readable (or not) to a combination of the user, group, and others.

Call 'adjust_shared_perm' for split-graph layers to make sure that these also respect 'core.sharedRepository'. The 'commit-graph-chain' file already respects this configuration since it uses 'hold_lock_file_for_update' (which calls 'adjust_shared_perm' eventually in 'create_tempfile_mode').

Suggested-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
---
 commit-graph.c                |  6 ++++++
 t/t5324-split-commit-graph.sh | 18 ++++++++++++++++++
 2 files changed, 24 insertions(+)
diff --git a/commit-graph.c b/commit-graph.c
index 5b5047a7dd..d05a55901d 100644
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -1386,6 +1386,12 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx)
 			return -1;
 		}
 
+		if (adjust_shared_perm(ctx->graph_name)) {
+			error(_("unable to adjust shared permissions for '%s'"),
+			      ctx->graph_name);
+			return -1;
+		}
+
 		f = hashfd(fd, ctx->graph_name);
 	} else {
 		hold_lock_file_for_update_mode(&lk, ctx->graph_name,
diff --git a/t/t5324-split-commit-graph.sh b/t/t5324-split-commit-graph.sh
index 53b2e6b455..61136c737f 100755
--- a/t/t5324-split-commit-graph.sh
+++ b/t/t5324-split-commit-graph.sh
@@ -351,4 +351,22 @@ test_expect_success 'split across alternate where alternate is not split' '
 	test_cmp commit-graph .git/objects/info/commit-graph
 '
 
+while read mode modebits
+do
+	test_expect_success POSIXPERM "split commit-graph respects core.sharedrepository $mode" '
+		rm -rf $graphdir $infodir/commit-graph &&
+		git reset --hard commits/1 &&
+		test_config core.sharedrepository "$mode" &&
+		git commit-graph write --split --reachable &&
+		ls $graphdir/graph-*.graph >graph-files &&
+		test_line_count = 1 graph-files &&
+		echo "$modebits" >expect &&
+		test_modebits $graphdir/graph-*.graph >actual &&
+		test_cmp expect actual
+	'
+done <<\EOF
+0666 -r--r--r--
+0600 -r--------
+EOF
+
 test_done
-- 
2.26.0.113.ge9739cdccc
Previous: Derrick StoleeNext: Taylor Blau
Message 27 of 36 in “commit-graph: write non-split graphs as read-only”
  1. 0/3 commit-graph: write non-split graphs as read-onlyTaylor Blau, Apr 20, 2020
  2. 1/3 tempfile.c: introduce 'create_tempfile_mode'Taylor Blau, Apr 20, 2020
  3. Junio C HamanoApr 20, 2020
  4. 2/3 lockfile.c: introduce 'hold_lock_file_for_update_mode'Taylor Blau, Apr 20, 2020
  5. 3/3 commit-graph.c: write non-split graphs as read-onlyTaylor Blau, Apr 20, 2020
  6. Junio C HamanoApr 20, 2020
  7. Taylor BlauApr 20, 2020
  8. Junio C HamanoApr 21, 2020
  9. Jeff KingApr 21, 2020
  10. Junio C HamanoApr 21, 2020
  11. 0/4 commit-graph: write non-split graphs as read-onlyTaylor Blau, Apr 27, 2020
  12. 1/4 tempfile.c: introduce 'create_tempfile_mode'Taylor Blau, Apr 27, 2020
  13. 2/4 lockfile.c: introduce 'hold_lock_file_for_update_mode'Taylor Blau, Apr 27, 2020
  14. 3/4 commit-graph.c: write non-split graphs as read-onlyTaylor Blau, Apr 27, 2020
  15. Junio C HamanoApr 27, 2020
  16. Taylor BlauApr 27, 2020
  17. Junio C HamanoApr 28, 2020
  18. Jeff KingApr 28, 2020
  19. Junio C HamanoApr 28, 2020
  20. Jeff KingApr 28, 2020
  21. Junio C HamanoApr 28, 2020
  22. Jeff KingApr 28, 2020
  23. Taylor BlauApr 28, 2020
  24. Jeff KingApr 28, 2020
  25. Junio C HamanoApr 28, 2020
  26. Derrick StoleeApr 29, 2020
  27. 4/4 commit-graph.c: ensure graph layers respect core.sharedRepositoryTaylor Blau, Apr 27, 2020
  28. Taylor BlauApr 27, 2020
  29. Jeff KingApr 27, 2020
  30. 0/5 commit-graph: write non-split graphs as read-onlyTaylor Blau, Apr 29, 2020
  31. 1/5 tempfile.c: introduce 'create_tempfile_mode'Taylor Blau, Apr 29, 2020
  32. 2/5 lockfile.c: introduce 'hold_lock_file_for_update_mode'Taylor Blau, Apr 29, 2020
  33. 3/5 commit-graph.c: write non-split graphs as read-onlyTaylor Blau, Apr 29, 2020
  34. 4/5 commit-graph.c: ensure graph layers respect core.sharedRepositoryTaylor Blau, Apr 29, 2020
  35. 5/5 commit-graph.c: make 'commit-graph-chain's read-onlyTaylor Blau, Apr 29, 2020
  36. Jeff KingMay 1, 2020

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