1 files changed, 45 insertions, 0 deletions
diff --git a/src/get_subid_owners.c b/src/get_subid_owners.c
new file mode 100644
index 0000000..36974b8
--- /dev/null
+++ b/src/get_subid_owners.c
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+
+#include <stdio.h>
+#include "subid.h"
+#include "stdlib.h"
+#include "prototypes.h"
+#include "shadowlog.h"
+
+const char *Prog;
+
+static void usage(void)
+{
+	fprintf(stderr, "Usage: [-g] %s subuid\n", Prog);
+	fprintf(stderr, "    list uids who own the given subuid\n");
+	fprintf(stderr, "    pass -g to query a subgid\n");
+	exit(EXIT_FAILURE);
+}
+
+int main(int argc, char *argv[])
+{
+	int i, n;
+	uid_t *uids;
+
+	Prog = Basename (argv[0]);
+	log_set_progname(Prog);
+	log_set_logfd(stderr);
+	if (argc < 2) {
+		usage();
+	}
+	if (argc == 3 && strcmp(argv[1], "-g") == 0)
+		n = subid_get_gid_owners(atoi(argv[2]), &uids);
+	else if (argc == 2 && strcmp(argv[1], "-h") == 0)
+		usage();
+	else
+		n = subid_get_uid_owners(atoi(argv[1]), &uids);
+	if (n < 0) {
+		fprintf(stderr, "No owners found\n");
+		exit(1);
+	}
+	for (i = 0; i < n; i++) {
+		printf("%d\n", uids[i]);
+	}
+	free(uids);
+	return 0;
+}