[v2,1/3] repository: create disable_replace_refs()

Commit Message

Derrick Stolee June 2, 2023, 2:29 p.m. UTC

From: Derrick Stolee <[e-mail]>

Several builtins depend on being able to disable the replace references
so we actually operate on each object individually. These currently do
so by directly mutating the 'read_replace_refs' global.

A future change will move this global into a different place, so it will
be necessary to change all of these lines. However, we can simplify that
transition by abstracting the purpose of these global assignments with a
method call.

We will need to keep this read_replace_refs global forever, as we want
to make sure that we never use replace refs throughout the life of the
process if this method is called. Future changes may present a
repository-scoped version of the variable to represent that repository's
core.useReplaceRefs config value, but a zero-valued read_replace_refs
will always override such a setting.

Signed-off-by: Derrick Stolee <[e-mail]>
---
 builtin/cat-file.c       | 2 +-
 builtin/commit-graph.c   | 2 +-
 builtin/fsck.c           | 2 +-
 builtin/index-pack.c     | 2 +-
 builtin/pack-objects.c   | 2 +-
 builtin/prune.c          | 2 +-
 builtin/replace.c        | 2 +-
 builtin/unpack-objects.c | 2 +-
 builtin/upload-pack.c    | 2 +-
 environment.c            | 2 +-
 git.c                    | 2 +-
 replace-object.c         | 5 +++++
 replace-object.h         | 8 ++++++++
 13 files changed, 24 insertions(+), 11 deletions(-)

Patch

diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index 0bafc14e6c0..27f070267a4 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -805,7 +805,7 @@  static int batch_objects(struct batch_options *opt)
 		if (repo_has_promisor_remote(the_repository))
 			warning("This repository uses promisor remotes. Some objects may not be loaded.");
 
-		read_replace_refs = 0;
+		disable_replace_refs();
 
 		cb.opt = opt;
 		cb.expand = &data;
diff --git a/builtin/commit-graph.c b/builtin/commit-graph.c
index a3d00fa232b..dd732b35348 100644
--- a/builtin/commit-graph.c
+++ b/builtin/commit-graph.c
@@ -324,7 +324,7 @@  int cmd_commit_graph(int argc, const char **argv, const char *prefix)
 
 	git_config(git_default_config, NULL);
 
-	read_replace_refs = 0;
+	disable_replace_refs();
 	save_commit_buffer = 0;
 
 	argc = parse_options(argc, argv, prefix, options,
diff --git a/builtin/fsck.c b/builtin/fsck.c
index 2cd461b84c1..a2fe760cc0e 100644
--- a/builtin/fsck.c
+++ b/builtin/fsck.c
@@ -927,7 +927,7 @@  int cmd_fsck(int argc, const char **argv, const char *prefix)
 	fetch_if_missing = 0;
 
 	errors_found = 0;
-	read_replace_refs = 0;
+	disable_replace_refs();
 	save_commit_buffer = 0;
 
 	argc = parse_options(argc, argv, prefix, fsck_opts, fsck_usage, 0);
diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index bb67e166559..d0d8067510b 100644
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -1752,7 +1752,7 @@  int cmd_index_pack(int argc, const char **argv, const char *prefix)
 	if (argc == 2 && !strcmp(argv[1], "-h"))
 		usage(index_pack_usage);
 
-	read_replace_refs = 0;
+	disable_replace_refs();
 	fsck_options.walk = mark_link;
 
 	reset_pack_idx_option(&opts);
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index a5b466839ba..e23fe82ca1a 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -4284,7 +4284,7 @@  int cmd_pack_objects(int argc, const char **argv, const char *prefix)
 	if (DFS_NUM_STATES > (1 << OE_DFS_STATE_BITS))
 		BUG("too many dfs states, increase OE_DFS_STATE_BITS");
 
-	read_replace_refs = 0;
+	disable_replace_refs();
 
 	sparse = git_env_bool("GIT_TEST_PACK_SPARSE", -1);
 	if (the_repository->gitdir) {
diff --git a/builtin/prune.c b/builtin/prune.c
index 5dc9b207200..28772017376 100644
--- a/builtin/prune.c
+++ b/builtin/prune.c
@@ -164,7 +164,7 @@  int cmd_prune(int argc, const char **argv, const char *prefix)
 
 	expire = TIME_MAX;
 	save_commit_buffer = 0;
-	read_replace_refs = 0;
+	disable_replace_refs();
 	repo_init_revisions(the_repository, &revs, prefix);
 
 	argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
diff --git a/builtin/replace.c b/builtin/replace.c
index 981f1894436..abff800276c 100644
--- a/builtin/replace.c
+++ b/builtin/replace.c
@@ -566,7 +566,7 @@  int cmd_replace(int argc, const char **argv, const char *prefix)
 		OPT_END()
 	};
 
-	read_replace_refs = 0;
+	disable_replace_refs();
 	git_config(git_default_config, NULL);
 
 	argc = parse_options(argc, argv, prefix, options, git_replace_usage, 0);
diff --git a/builtin/unpack-objects.c b/builtin/unpack-objects.c
index 2c52c3a741f..0b4fe803cc1 100644
--- a/builtin/unpack-objects.c
+++ b/builtin/unpack-objects.c
@@ -609,7 +609,7 @@  int cmd_unpack_objects(int argc, const char **argv, const char *prefix UNUSED)
 	int i;
 	struct object_id oid;
 
-	read_replace_refs = 0;
+	disable_replace_refs();
 
 	git_config(git_default_config, NULL);
 
diff --git a/builtin/upload-pack.c b/builtin/upload-pack.c
index beb9dd08610..81d2008e017 100644
--- a/builtin/upload-pack.c
+++ b/builtin/upload-pack.c
@@ -36,7 +36,7 @@  int cmd_upload_pack(int argc, const char **argv, const char *prefix)
 	};
 
 	packet_trace_identity("upload-pack");
-	read_replace_refs = 0;
+	disable_replace_refs();
 
 	argc = parse_options(argc, argv, prefix, options, upload_pack_usage, 0);
 
diff --git a/environment.c b/environment.c
index 8a96997539a..3b4d87c322f 100644
--- a/environment.c
+++ b/environment.c
@@ -185,7 +185,7 @@  void setup_git_env(const char *git_dir)
 	strvec_clear(&to_free);
 
 	if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
-		read_replace_refs = 0;
+		disable_replace_refs();
 	replace_ref_base = getenv(GIT_REPLACE_REF_BASE_ENVIRONMENT);
 	git_replace_ref_base = xstrdup(replace_ref_base ? replace_ref_base
 							  : "refs/replace/");
diff --git a/git.c b/git.c
index 45899be8265..3252d4c7661 100644
--- a/git.c
+++ b/git.c
@@ -185,7 +185,7 @@  static int handle_options(const char ***argv, int *argc, int *envchanged)
 			if (envchanged)
 				*envchanged = 1;
 		} else if (!strcmp(cmd, "--no-replace-objects")) {
-			read_replace_refs = 0;
+			disable_replace_refs();
 			setenv(NO_REPLACE_OBJECTS_ENVIRONMENT, "1", 1);
 			if (envchanged)
 				*envchanged = 1;
diff --git a/replace-object.c b/replace-object.c
index e98825d5852..ceec81c940c 100644
--- a/replace-object.c
+++ b/replace-object.c
@@ -84,3 +84,8 @@  const struct object_id *do_lookup_replace_object(struct repository *r,
 	}
 	die(_("replace depth too high for object %s"), oid_to_hex(oid));
 }
+
+void disable_replace_refs(void)
+{
+	read_replace_refs = 0;
+}
diff --git a/replace-object.h b/replace-object.h
index 500482b02b3..7786d4152b0 100644
--- a/replace-object.h
+++ b/replace-object.h
@@ -48,4 +48,12 @@  static inline const struct object_id *lookup_replace_object(struct repository *r
 	return do_lookup_replace_object(r, oid);
 }
 
+/*
+ * Some commands override config and environment settings for using
+ * replace references. Use this method to disable the setting and ensure
+ * those other settings will not override this choice. This applies
+ * globally to all in-process repositories.
+ */
+void disable_replace_refs(void);
+
 #endif /* REPLACE_OBJECT_H */