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[PATCH v3 08/20] refs: add methods to init refs db

From
David Turner <dturner@twopensource.com>
Date
Jan 14, 2016, 16:26 UTC
Message-ID
<1452788777-24954-9-git-send-email-dturner@twopensource.com>
In-Reply-To
<1452788777-24954-1-git-send-email-dturner@twopensource.com>

Alternate refs backends might not need the refs/heads directory and so on, so we make ref db initialization part of the backend.

Signed-off-by: David Turner <dturner@twopensource.com>
---
 builtin/init-db.c    | 14 ++++----------
 refs.c               |  5 +++++
 refs.h               |  2 ++
 refs/files-backend.c | 17 +++++++++++++++++
 refs/refs-internal.h |  2 ++
 5 files changed, 30 insertions(+), 10 deletions(-)
diff --git a/builtin/init-db.c b/builtin/init-db.c
index 26e1cc3..4771e7e 100644
--- a/builtin/init-db.c
+++ b/builtin/init-db.c
@@ -178,13 +178,7 @@ static int create_default_files(const char *template_path)
 	char junk[2];
 	int reinit;
 	int filemode;
-
-	/*
-	 * Create .git/refs/{heads,tags}
-	 */
-	safe_create_dir(git_path_buf(&buf, "refs"), 1);
-	safe_create_dir(git_path_buf(&buf, "refs/heads"), 1);
-	safe_create_dir(git_path_buf(&buf, "refs/tags"), 1);
+	struct strbuf err = STRBUF_INIT;
 
 	/* Just look for `init.templatedir` */
 	git_config(git_init_db_config, NULL);
@@ -208,11 +202,11 @@ static int create_default_files(const char *template_path)
 	 */
 	if (shared_repository) {
 		adjust_shared_perm(get_git_dir());
-		adjust_shared_perm(git_path_buf(&buf, "refs"));
-		adjust_shared_perm(git_path_buf(&buf, "refs/heads"));
-		adjust_shared_perm(git_path_buf(&buf, "refs/tags"));
 	}
 
+	if (refs_init_db(&err, shared_repository))
+		die("failed to set up refs db: %s", err.buf);
+
 	/*
 	 * Create the default symlink from ".git/HEAD" to the "master"
 	 * branch, if it does not exist yet.
diff --git a/refs.c b/refs.c
index f1c0601..b43d9ea 100644
--- a/refs.c
+++ b/refs.c
@@ -1106,6 +1106,11 @@ int rename_ref_available(const char *oldname, const char *newname)
 }
 
 /* backend functions */
+int refs_init_db(struct strbuf *err, int shared)
+{
+	return the_refs_backend->init_db(err, shared);
+}
+
 int ref_transaction_commit(struct ref_transaction *transaction,
 			   struct strbuf *err)
 {
diff --git a/refs.h b/refs.h
index c831b8e..4d18886 100644
--- a/refs.h
+++ b/refs.h
@@ -66,6 +66,8 @@ extern int ref_exists(const char *refname);
 
 extern int is_branch(const char *refname);
 
+extern int refs_init_db(struct strbuf *err, int shared);
+
 /*
  * If refname is a non-symbolic reference that refers to a tag object,
  * and the tag can be (recursively) dereferenced to a non-tag object,
diff --git a/refs/files-backend.c b/refs/files-backend.c
index f1cb4c9..7f8c3d1 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -3540,9 +3540,26 @@ static int files_reflog_expire(const char *refname, const unsigned char *sha1,
 	return -1;
 }
 
+static int files_init_db(struct strbuf *err, int shared)
+{
+	/*
+	 * Create .git/refs/{heads,tags}
+	 */
+	safe_create_dir(git_path("refs"), 1);
+	safe_create_dir(git_path("refs/heads"), 1);
+	safe_create_dir(git_path("refs/tags"), 1);
+	if (shared) {
+		adjust_shared_perm(git_path("refs"));
+		adjust_shared_perm(git_path("refs/heads"));
+		adjust_shared_perm(git_path("refs/tags"));
+	}
+	return 0;
+}
+
 struct ref_storage_be refs_be_files = {
 	NULL,
 	"files",
+	files_init_db,
 	files_transaction_commit,
 	files_initial_transaction_commit,
 
diff --git a/refs/refs-internal.h b/refs/refs-internal.h
index b9c9b1d..1373c02 100644
--- a/refs/refs-internal.h
+++ b/refs/refs-internal.h
@@ -208,6 +208,7 @@ const char *find_descendant_ref(const char *dirname,
 int rename_ref_available(const char *oldname, const char *newname);
 
 /* refs backends */
+typedef int ref_init_db_fn(struct strbuf *err, int shared);
 typedef int ref_transaction_commit_fn(struct ref_transaction *transaction,
 				      struct strbuf *err);
 
@@ -267,6 +268,7 @@ typedef int for_each_replace_ref_fn(each_ref_fn fn, void *cb_data);
 struct ref_storage_be {
 	struct ref_storage_be *next;
 	const char *name;
+	ref_init_db_fn *init_db;
 	ref_transaction_commit_fn *transaction_commit;
 	ref_transaction_commit_fn *initial_transaction_commit;
 
-- 
2.4.2.749.g730654d-twtrsrc
Previous: David TurnerNext: David Turner
Message 9 of 49 in “refs backend rebase on pu”
  1. 00/20 refs backend rebase on puDavid Turner, Jan 14, 2016
  2. 01/20 refs: add a backend method structure with transaction functionsDavid Turner, Jan 14, 2016
  3. 02/20 refs: add methods for misc ref operationsDavid Turner, Jan 14, 2016
  4. 03/20 refs: add methods for the ref iteratorsDavid Turner, Jan 14, 2016
  5. 04/20 refs: add do_for_each_per_worktree_refDavid Turner, Jan 14, 2016
  6. 05/20 refs: add methods for reflogDavid Turner, Jan 14, 2016
  7. 06/20 refs: add method for initial ref transaction commitDavid Turner, Jan 14, 2016
  8. 07/20 refs: add method for delete_refsDavid Turner, Jan 14, 2016
  9. 08/20 refs: add methods to init refs dbDavid Turner, Jan 14, 2016
  10. 09/20 refs: add method to rename refsDavid Turner, Jan 14, 2016
  11. 10/20 refs: make lock genericDavid Turner, Jan 14, 2016
  12. 11/20 refs: move duplicate check to common codeDavid Turner, Jan 14, 2016
  13. 12/20 refs: allow log-only updatesDavid Turner, Jan 14, 2016
  14. 13/20 refs: resolve symbolic refs firstDavid Turner, Jan 14, 2016
  15. Jeff KingFeb 4, 2016
  16. David TurnerFeb 4, 2016
  17. 14/20 refs: always handle non-normal refs in files backendDavid Turner, Jan 14, 2016
  18. 15/20 init: allow alternate backends to be set for new reposDavid Turner, Jan 14, 2016
  19. SZEDER GáborJan 15, 2016
  20. Thomas GummererJan 15, 2016
  21. David TurnerJan 19, 2016
  22. Duy NguyenFeb 4, 2016
  23. David TurnerFeb 4, 2016
  24. 16/20 refs: check submodules ref storage configDavid Turner, Jan 14, 2016
  25. 17/20 refs: allow ref backend to be set for cloneDavid Turner, Jan 14, 2016
  26. SZEDER GáborJan 15, 2016
  27. David TurnerJan 19, 2016
  28. SZEDER GáborJan 21, 2016
  29. 18/20 svn: learn ref-storage argumentDavid Turner, Jan 14, 2016
  30. SZEDER GáborJan 15, 2016
  31. 19/20 refs: add LMDB refs backendDavid Turner, Jan 14, 2016
  32. Thomas GummererJan 15, 2016
  33. David TurnerJan 19, 2016
  34. Duy NguyenFeb 4, 2016
  35. David TurnerFeb 4, 2016
  36. 20/20 refs: tests for lmdb backendDavid Turner, Jan 14, 2016
  37. David TurnerFeb 2, 2016
  38. Junio C HamanoFeb 2, 2016
  39. Junio C HamanoFeb 4, 2016
  40. David TurnerFeb 4, 2016
  41. Ramsay JonesFeb 4, 2016
  42. Jeff KingFeb 4, 2016
  43. David TurnerFeb 4, 2016
  44. Duy NguyenFeb 4, 2016
  45. David TurnerFeb 4, 2016
  46. Duy NguyenFeb 4, 2016
  47. David TurnerFeb 4, 2016
  48. Ramsay JonesFeb 4, 2016
  49. David TurnerFeb 4, 2016

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