1 files changed, 108 insertions, 0 deletions
diff --git a/libsubid/api.c b/libsubid/api.c
new file mode 100644
index 0000000..00da74f
--- /dev/null
+++ b/libsubid/api.c
@@ -0,0 +1,108 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Serge Hallyn
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pwd.h>
+#include <stdbool.h>
+#include "subordinateio.h"
+#include "idmapping.h"
+#include "subid.h"
+#include "shadowlog.h"
+
+bool subid_init(const char *progname, FILE * logfd)
+{
+	FILE *shadow_logfd;
+	if (progname) {
+		progname = strdup(progname);
+		if (!progname)
+			return false;
+		log_set_progname(progname);
+	} else {
+		log_set_progname("(libsubid)");
+	}
+
+	if (logfd) {
+		log_set_logfd(logfd);
+		return true;
+	}
+	shadow_logfd = fopen("/dev/null", "w");
+	if (!shadow_logfd) {
+		log_set_logfd(stderr);
+		return false;
+	}
+	log_set_logfd(shadow_logfd);
+	return true;
+}
+
+static
+int get_subid_ranges(const char *owner, enum subid_type id_type, struct subid_range **ranges)
+{
+	return list_owner_ranges(owner, id_type, ranges);
+}
+
+int subid_get_uid_ranges(const char *owner, struct subid_range **ranges)
+{
+	return get_subid_ranges(owner, ID_TYPE_UID, ranges);
+}
+
+int subid_get_gid_ranges(const char *owner, struct subid_range **ranges)
+{
+	return get_subid_ranges(owner, ID_TYPE_GID, ranges);
+}
+
+static
+int get_subid_owner(unsigned long id, enum subid_type id_type, uid_t **owner)
+{
+	return find_subid_owners(id, id_type, owner);
+}
+
+int subid_get_uid_owners(uid_t uid, uid_t **owner)
+{
+	return get_subid_owner((unsigned long)uid, ID_TYPE_UID, owner);
+}
+
+int subid_get_gid_owners(gid_t gid, uid_t **owner)
+{
+	return get_subid_owner((unsigned long)gid, ID_TYPE_GID, owner);
+}
+
+static
+bool grant_subid_range(struct subordinate_range *range, bool reuse,
+		       enum subid_type id_type)
+{
+	return new_subid_range(range, id_type, reuse);
+}
+
+bool subid_grant_uid_range(struct subordinate_range *range, bool reuse)
+{
+	return grant_subid_range(range, reuse, ID_TYPE_UID);
+}
+
+bool subid_grant_gid_range(struct subordinate_range *range, bool reuse)
+{
+	return grant_subid_range(range, reuse, ID_TYPE_GID);
+}
+
+static
+bool ungrant_subid_range(struct subordinate_range *range, enum subid_type id_type)
+{
+	return release_subid_range(range, id_type);
+}
+
+bool subid_ungrant_uid_range(struct subordinate_range *range)
+{
+	return ungrant_subid_range(range, ID_TYPE_UID);
+}
+
+bool subid_ungrant_gid_range(struct subordinate_range *range)
+{
+	return ungrant_subid_range(range, ID_TYPE_GID);
+}