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setup: refactor upgrade_repository_format() to have common exit

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The `upgrade_repository_format()` function has multiple exit paths,
which means that there is no common cleanup of acquired resources.
While this isn't much of a problem right now, we're about to fix a
memory leak that would require us to free the resource in every one of
those exit paths.

Refactor the code to have a common exit path so that the subsequent
memory leak fix becomes easier to implement.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt
2023-11-06 11:46:01 +01:00
committed by Junio C Hamano
parent 568cc818cc
commit 4ce14e1325
1 changed files with 20 additions and 11 deletions
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31
setup.c
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@ -693,29 +693,38 @@ int upgrade_repository_format(int target_version)
struct strbuf err = STRBUF_INIT;
struct strbuf repo_version = STRBUF_INIT;
struct repository_format repo_fmt = REPOSITORY_FORMAT_INIT;
int ret;
strbuf_git_common_path(&sb, the_repository, "config");
read_repository_format(&repo_fmt, sb.buf);
strbuf_release(&sb);
if (repo_fmt.version >= target_version)
return 0;
if (repo_fmt.version >= target_version) {
ret = 0;
goto out;
}
if (verify_repository_format(&repo_fmt, &err) < 0) {
error("cannot upgrade repository format from %d to %d: %s",
repo_fmt.version, target_version, err.buf);
strbuf_release(&err);
return -1;
ret = error("cannot upgrade repository format from %d to %d: %s",
repo_fmt.version, target_version, err.buf);
goto out;
}
if (!repo_fmt.version && repo_fmt.unknown_extensions.nr) {
ret = error("cannot upgrade repository format: "
"unknown extension %s",
repo_fmt.unknown_extensions.items[0].string);
goto out;
}
if (!repo_fmt.version && repo_fmt.unknown_extensions.nr)
return error("cannot upgrade repository format: "
"unknown extension %s",
repo_fmt.unknown_extensions.items[0].string);
strbuf_addf(&repo_version, "%d", target_version);
git_config_set("core.repositoryformatversion", repo_version.buf);
ret = 1;
out:
strbuf_release(&repo_version);
return 1;
strbuf_release(&err);
return ret;
}
static void init_repository_format(struct repository_format *format)