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-rw-r--r--src/shared/uid-alloc-range.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/src/shared/uid-alloc-range.h b/src/shared/uid-alloc-range.h
new file mode 100644
index 0000000..d3bf077
--- /dev/null
+++ b/src/shared/uid-alloc-range.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <stdbool.h>
+#include <sys/types.h>
+
+bool uid_is_system(uid_t uid);
+bool gid_is_system(gid_t gid);
+
+static inline bool uid_is_dynamic(uid_t uid) {
+ return DYNAMIC_UID_MIN <= uid && uid <= DYNAMIC_UID_MAX;
+}
+
+static inline bool gid_is_dynamic(gid_t gid) {
+ return uid_is_dynamic((uid_t) gid);
+}
+
+static inline bool uid_is_container(uid_t uid) {
+ return CONTAINER_UID_BASE_MIN <= uid && uid <= CONTAINER_UID_BASE_MAX;
+}
+
+static inline bool gid_is_container(gid_t gid) {
+ return uid_is_container((uid_t) gid);
+}
+
+typedef struct UGIDAllocationRange {
+ uid_t system_alloc_uid_min;
+ uid_t system_uid_max;
+ gid_t system_alloc_gid_min;
+ gid_t system_gid_max;
+} UGIDAllocationRange;
+
+int read_login_defs(UGIDAllocationRange *ret_defs, const char *path, const char *root);
+const UGIDAllocationRange *acquire_ugid_allocation_range(void);