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refs: add methods to init refs db

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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>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
David Turner 2016-09-04 18:08:41 +02:00 committed by Junio C Hamano
parent a27dcf89b6
commit 6fb5acfd8f
5 changed files with 42 additions and 10 deletions
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21
builtin/init-db.c
View File

@ -180,13 +180,7 @@ 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);
@ -210,11 +204,18 @@ static int create_default_files(const char *template_path)
*/
if (get_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"));
}
/*
* We need to create a "refs" dir in any case so that older
* versions of git can tell that this is a repository.
*/
safe_create_dir(git_path("refs"), 1);
adjust_shared_perm(git_path("refs"));
if (refs_init_db(&err))
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.

8
refs.c
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@ -1292,6 +1292,14 @@ static const char *resolve_ref_recursively(struct ref_store *refs,
return NULL;
}
/* backend functions */
int refs_init_db(struct strbuf *err)
{
struct ref_store *refs = get_ref_store(NULL);
return refs->be->init_db(refs, err);
}
const char *resolve_ref_unsafe(const char *refname, int resolve_flags,
unsigned char *sha1, int *flags)
{

2
refs.h
View File

@ -66,6 +66,8 @@ int ref_exists(const char *refname);
int is_branch(const char *refname);
extern int refs_init_db(struct strbuf *err);
/*
* 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,

18
refs/files-backend.c
View File

@ -4058,10 +4058,28 @@ static int files_reflog_expire(struct ref_store *ref_store,
return -1;
}
static int files_init_db(struct ref_store *ref_store, struct strbuf *err)
{
/* Check validity (but we don't need the result): */
files_downcast(ref_store, 0, "init_db");
/*
* Create .git/refs/{heads,tags}
*/
safe_create_dir(git_path("refs/heads"), 1);
safe_create_dir(git_path("refs/tags"), 1);
if (get_shared_repository()) {
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_ref_store_create,
files_init_db,
files_transaction_commit,
files_initial_transaction_commit,

3
refs/refs-internal.h
View File

@ -479,6 +479,8 @@ struct ref_store;
*/
typedef struct ref_store *ref_store_init_fn(const char *submodule);
typedef int ref_init_db_fn(struct ref_store *refs, struct strbuf *err);
typedef int ref_transaction_commit_fn(struct ref_store *refs,
struct ref_transaction *transaction,
struct strbuf *err);
@ -583,6 +585,7 @@ struct ref_storage_be {
struct ref_storage_be *next;
const char *name;
ref_store_init_fn *init;
ref_init_db_fn *init_db;
ref_transaction_commit_fn *transaction_commit;
ref_transaction_commit_fn *initial_transaction_commit;