[GSoC][PATCH v4 4/7] builtin/fsck: add `git-refs verify` child process

[shejialuo <shejialuo@gmail.com>]

Introduce a new function "fsck_refs" that initializes and runs a child
process to execute the "git-refs verify" command.

Mentored-by: Patrick Steinhardt <ps@pks.im>
Mentored-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: shejialuo <shejialuo@gmail.com>
---
 builtin/fsck.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/builtin/fsck.c b/builtin/fsck.c
index a5b82e228c..cd988ff167 100644
--- a/builtin/fsck.c
+++ b/builtin/fsck.c
@@ -896,6 +896,21 @@ static int check_pack_rev_indexes(struct repository *r, int show_progress)
 	return res;
 }
 
+static void fsck_refs(void)
+{
+	struct child_process refs_verify = CHILD_PROCESS_INIT;
+	child_process_init(&refs_verify);
+	refs_verify.git_cmd = 1;
+	strvec_pushl(&refs_verify.args, "refs", "verify", NULL);
+	if (verbose)
+		strvec_push(&refs_verify.args, "--verbose");
+	if (check_strict)
+		strvec_push(&refs_verify.args, "--strict");
+
+	if (run_command(&refs_verify))
+		errors_found |= ERROR_REFS;
+}
+
 static char const * const fsck_usage[] = {
 	N_("git fsck [--tags] [--root] [--unreachable] [--cache] [--no-reflogs]\n"
 	   "         [--[no-]full] [--strict] [--verbose] [--lost-found]\n"
@@ -1065,6 +1080,8 @@ int cmd_fsck(int argc, const char **argv, const char *prefix)
 
 	check_connectivity();
 
+	fsck_refs();
+
 	if (the_repository->settings.core_commit_graph) {
 		struct child_process commit_graph_verify = CHILD_PROCESS_INIT;
 
-- 
2.45.2