refs: stop modifying global `log_all_ref_updates` variable

In refs-related code we modify the global `log_all_ref_updates`
variable, which is done because `should_autocreate_reflog()` does not
accept passing an `enum log_refs_config` but instead accesses the global
variable. Adapt its interface such that the value is provided by the
caller, which allows us to compute the proper value locally without
having to modify global state.

This change requires us to move the enum to "repo-settings.h", or
otherwise we get compilation errors due to include cycles. We're about
to fully move this setting into the repo-settings subsystem anyway, so
this is fine.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 12 insertions, 11 deletions

diff --git a/refs/files-backend.c b/refs/files-backend.c
index 1bbb550f3a..f5871abcf7 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -8,6 +8,7 @@
 #include "../hex.h"
 #include "../fsck.h"
 #include "../refs.h"
+#include "../repo-settings.h"
 #include "refs-internal.h"
 #include "ref-cache.h"
 #include "packed-backend.h"
@@ -1443,6 +1444,7 @@ static int write_ref_to_lockfile(struct files_ref_store *refs,
 static int commit_ref_update(struct files_ref_store *refs,
 			     struct ref_lock *lock,
 			     const struct object_id *oid, const char *logmsg,
+			     int flags,
 			     struct strbuf *err);
 
 /*
@@ -1586,7 +1588,7 @@ static int files_copy_or_rename_ref(struct ref_store *ref_store,
 	oidcpy(&lock->old_oid, &orig_oid);
 
 	if (write_ref_to_lockfile(refs, lock, &orig_oid, 0, &err) ||
-	    commit_ref_update(refs, lock, &orig_oid, logmsg, &err)) {
+	    commit_ref_update(refs, lock, &orig_oid, logmsg, 0, &err)) {
 		error("unable to write current sha1 into %s: %s", newrefname, err.buf);
 		strbuf_release(&err);
 		goto rollback;
@@ -1603,14 +1605,11 @@ static int files_copy_or_rename_ref(struct ref_store *ref_store,
 		goto rollbacklog;
 	}
 
-	flag = log_all_ref_updates;
-	log_all_ref_updates = LOG_REFS_NONE;
 	if (write_ref_to_lockfile(refs, lock, &orig_oid, 0, &err) ||
-	    commit_ref_update(refs, lock, &orig_oid, NULL, &err)) {
+	    commit_ref_update(refs, lock, &orig_oid, NULL, REF_SKIP_CREATE_REFLOG, &err)) {
 		error("unable to write current sha1 into %s: %s", oldrefname, err.buf);
 		strbuf_release(&err);
 	}
-	log_all_ref_updates = flag;
 
  rollbacklog:
 	if (logmoved && rename(sb_newref.buf, sb_oldref.buf))
@@ -1705,13 +1704,17 @@ static int log_ref_setup(struct files_ref_store *refs,
 			 const char *refname, int force_create,
 			 int *logfd, struct strbuf *err)
 {
+	enum log_refs_config log_refs_cfg = log_all_ref_updates;
 	struct strbuf logfile_sb = STRBUF_INIT;
 	char *logfile;
 
+	if (log_refs_cfg == LOG_REFS_UNSET)
+		log_refs_cfg = is_bare_repository() ? LOG_REFS_NONE : LOG_REFS_NORMAL;
+
 	files_reflog_path(refs, &logfile_sb, refname);
 	logfile = strbuf_detach(&logfile_sb, NULL);
 
-	if (force_create || should_autocreate_reflog(refname)) {
+	if (force_create || should_autocreate_reflog(log_refs_cfg, refname)) {
 		if (raceproof_create_file(logfile, open_or_create_logfile, logfd)) {
 			if (errno == ENOENT)
 				strbuf_addf(err, "unable to create directory for '%s': "
@@ -1800,9 +1803,6 @@ static int files_log_ref_write(struct files_ref_store *refs,
 	if (flags & REF_SKIP_CREATE_REFLOG)
 		return 0;
 
-	if (log_all_ref_updates == LOG_REFS_UNSET)
-		log_all_ref_updates = is_bare_repository() ? LOG_REFS_NONE : LOG_REFS_NORMAL;
-
 	result = log_ref_setup(refs, refname,
 			       flags & REF_FORCE_CREATE_REFLOG,
 			       &logfd, err);
@@ -1891,6 +1891,7 @@ static int write_ref_to_lockfile(struct files_ref_store *refs,
 static int commit_ref_update(struct files_ref_store *refs,
 			     struct ref_lock *lock,
 			     const struct object_id *oid, const char *logmsg,
+			     int flags,
 			     struct strbuf *err)
 {
 	files_assert_main_repository(refs, "commit_ref_update");
@@ -1898,7 +1899,7 @@ static int commit_ref_update(struct files_ref_store *refs,
 	clear_loose_ref_cache(refs);
 	if (files_log_ref_write(refs, lock->ref_name,
 				&lock->old_oid, oid,
-				logmsg, 0, err)) {
+				logmsg, flags, err)) {
 		char *old_msg = strbuf_detach(err, NULL);
 		strbuf_addf(err, "cannot update the ref '%s': %s",
 			    lock->ref_name, old_msg);
@@ -1931,7 +1932,7 @@ static int commit_ref_update(struct files_ref_store *refs,
 			struct strbuf log_err = STRBUF_INIT;
 			if (files_log_ref_write(refs, "HEAD",
 						&lock->old_oid, oid,
-						logmsg, 0, &log_err)) {
+						logmsg, flags, &log_err)) {
 				error("%s", log_err.buf);
 				strbuf_release(&log_err);
 			}