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files-backend: make sure files_rename_ref() always reach the end 

This is a no-op patch. It prepares the function so that we can release
resources (to be added later in this function) before we return.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy 2017-03-26 09:42:19 +07:00 committed by Junio C Hamano
parent 33dfb9f3f2
commit 0a3f07d6c0
1 changed files with 28 additions and 14 deletions
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42
refs/files-backend.c
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@ -2585,23 +2585,34 @@ static int files_rename_ref(struct ref_store *ref_store,
struct stat loginfo;
int log = !lstat(git_path("logs/%s", oldrefname), &loginfo);
struct strbuf err = STRBUF_INIT;
int ret;
if (log && S_ISLNK(loginfo.st_mode))
return error("reflog for %s is a symlink", oldrefname);
if (log && S_ISLNK(loginfo.st_mode)) {
ret = error("reflog for %s is a symlink", oldrefname);
goto out;
}
if (!resolve_ref_unsafe(oldrefname, RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE,
orig_sha1, &flag))
return error("refname %s not found", oldrefname);
orig_sha1, &flag)) {
ret = error("refname %s not found", oldrefname);
goto out;
}
if (flag & REF_ISSYMREF)
return error("refname %s is a symbolic ref, renaming it is not supported",
oldrefname);
if (!rename_ref_available(oldrefname, newrefname))
return 1;
if (flag & REF_ISSYMREF) {
ret = error("refname %s is a symbolic ref, renaming it is not supported",
oldrefname);
goto out;
}
if (!rename_ref_available(oldrefname, newrefname)) {
ret = 1;
goto out;
}
if (log && rename(git_path("logs/%s", oldrefname), git_path(TMP_RENAMED_LOG)))
return error("unable to move logfile logs/%s to "TMP_RENAMED_LOG": %s",
oldrefname, strerror(errno));
if (log && rename(git_path("logs/%s", oldrefname), git_path(TMP_RENAMED_LOG))) {
ret = error("unable to move logfile logs/%s to "TMP_RENAMED_LOG": %s",
oldrefname, strerror(errno));
goto out;
}
if (delete_ref(logmsg, oldrefname, orig_sha1, REF_NODEREF)) {
error("unable to delete old %s", oldrefname);
@ -2657,7 +2668,8 @@ static int files_rename_ref(struct ref_store *ref_store,
goto rollback;
}
return 0;
ret = 0;
goto out;
rollback:
lock = lock_ref_sha1_basic(refs, oldrefname, NULL, NULL, NULL,
@ -2686,7 +2698,9 @@ static int files_rename_ref(struct ref_store *ref_store,
error("unable to restore logfile %s from "TMP_RENAMED_LOG": %s",
oldrefname, strerror(errno));
return 1;
ret = 1;
out:
return ret;
}
static int close_ref(struct ref_lock *lock)