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[RFC PATCH 13/22] init-db: move writing repo version into a function

From
brian m. carlson <sandals@crustytoothpaste.net>
Date
Jan 13, 2020, 12:47 UTC
Message-ID
<20200113124729.3684846-14-sandals@crustytoothpaste.net>
In-Reply-To
<20200113124729.3684846-1-sandals@crustytoothpaste.net>

When we perform a clone, we won't know the remote side's hash algorithm until we've read the heads. Consequently, we'll need to rewrite the repository format version and hash algorithm once we know what the remote side has. Move the code that does this into its own function so that we can call it from clone in the future.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
---
 builtin/init-db.c | 32 +++++++++++++++++++-------------
 cache.h           |  1 +
 2 files changed, 20 insertions(+), 13 deletions(-)
diff --git a/builtin/init-db.c b/builtin/init-db.c
index 7b385aacfd..9df9a54d20 100644
--- a/builtin/init-db.c
+++ b/builtin/init-db.c
@@ -178,6 +178,24 @@ static int needs_work_tree_config(const char *git_dir, const char *work_tree)
 	return 1;
 }
 
+void initialize_repository_version(int hash_algo)
+{
+	char repo_version_string[10];
+	int repo_version = GIT_REPO_VERSION;
+
+	if (hash_algo != GIT_HASH_SHA1)
+		repo_version = GIT_REPO_VERSION_READ;
+
+	/* This forces creation of new config file */
+	xsnprintf(repo_version_string, sizeof(repo_version_string),
+		  "%d", repo_version);
+	git_config_set("core.repositoryformatversion", repo_version_string);
+
+	if (hash_algo != GIT_HASH_SHA1)
+		git_config_set("extensions.objectformat",
+			       hash_algos[hash_algo].name);
+}
+
 static int create_default_files(const char *template_path,
 				const char *original_git_dir,
 				const struct repository_format *fmt)
@@ -185,12 +203,10 @@ static int create_default_files(const char *template_path,
 	struct stat st1;
 	struct strbuf buf = STRBUF_INIT;
 	char *path;
-	char repo_version_string[10];
 	char junk[2];
 	int reinit;
 	int filemode;
 	struct strbuf err = STRBUF_INIT;
-	int repo_version = GIT_REPO_VERSION;
 
 	/* Just look for `init.templatedir` */
 	init_db_template_dir = NULL; /* re-set in case it was set before */
@@ -248,17 +264,7 @@ static int create_default_files(const char *template_path,
 			exit(1);
 	}
 
-	if (fmt->hash_algo != GIT_HASH_SHA1)
-		repo_version = GIT_REPO_VERSION_READ;
-
-	/* This forces creation of new config file */
-	xsnprintf(repo_version_string, sizeof(repo_version_string),
-		  "%d", repo_version);
-	git_config_set("core.repositoryformatversion", repo_version_string);
-
-	if (fmt->hash_algo != GIT_HASH_SHA1)
-		git_config_set("extensions.objectformat",
-			       hash_algos[fmt->hash_algo].name);
+	initialize_repository_version(fmt->hash_algo);
 
 	/* Check filemode trustability */
 	path = git_path_buf(&buf, "config");
diff --git a/cache.h b/cache.h
index 14321f55da..a47a9f5dbd 100644
--- a/cache.h
+++ b/cache.h
@@ -629,6 +629,7 @@ int path_inside_repo(const char *prefix, const char *path);
 int init_db(const char *git_dir, const char *real_git_dir,
 	    const char *template_dir, int hash_algo,
 	    unsigned int flags);
+void initialize_repository_version(int hash_algo);
 
 void sanitize_stdfds(void);
 int daemonize(void);
Previous: brian m. carlsonNext: brian m. carlson
Message 19 of 25 in “SHA-256 stage 4 implementation, part 1/3”
  1. 00/22 SHA-256 stage 4 implementation, part 1/3brian m. carlson, Jan 13, 2020
  2. 02/22 hex: add functions to parse hex object IDs in any algorithmbrian m. carlson, Jan 13, 2020
  3. Junio C HamanoJan 15, 2020
  4. brian m. carlsonJan 16, 2020
  5. 04/22 t: use hash-specific lookup tables to define test constantsbrian m. carlson, Jan 13, 2020
  6. 05/22 t6300: abstract away SHA-1-specific constantsbrian m. carlson, Jan 13, 2020
  7. 10/22 setup: allow check_repository_format to read repository formatbrian m. carlson, Jan 13, 2020
  8. 11/22 builtin/init-db: allow specifying hash algorithm on command linebrian m. carlson, Jan 13, 2020
  9. 17/22 tag: store SHA-256 signatures in a headerbrian m. carlson, Jan 13, 2020
  10. 19/22 fast-import: add helper function for inserting mark object entriesbrian m. carlson, Jan 13, 2020
  11. 16/22 gpg-interface: improve interface for parsing tagsbrian m. carlson, Jan 13, 2020
  12. 22/22 fast-import: add options for rewriting submodulesbrian m. carlson, Jan 13, 2020
  13. 18/22 fast-import: permit reading multiple marks filesbrian m. carlson, Jan 13, 2020
  14. 15/22 commit: use expected signature header for SHA-256brian m. carlson, Jan 13, 2020
  15. 20/22 fast-import: make find_marks work on any mark setbrian m. carlson, Jan 13, 2020
  16. 21/22 fast-import: add a generic function to iterate over marksbrian m. carlson, Jan 13, 2020
  17. 14/22 worktree: allow repository version 1brian m. carlson, Jan 13, 2020
  18. 12/22 builtin/init-db: add environment variable for new repo hashbrian m. carlson, Jan 13, 2020
  19. 13/22 init-db: move writing repo version into a functionbrian m. carlson, Jan 13, 2020
  20. 09/22 t/helper: make repository tests hash independentbrian m. carlson, Jan 13, 2020
  21. 03/22 repository: require a build flag to use SHA-256brian m. carlson, Jan 13, 2020
  22. 08/22 t/helper: initialize repository if necessarybrian m. carlson, Jan 13, 2020
  23. 07/22 t/helper/test-dump-split-index: initialize git repositorybrian m. carlson, Jan 13, 2020
  24. 01/22 hex: introduce parsing variants taking hash algorithmsbrian m. carlson, Jan 13, 2020
  25. 06/22 t6300: make hash algorithm independentbrian m. carlson, Jan 13, 2020

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