1 files changed, 58 insertions, 0 deletions
diff --git a/src/libsystemd/sd-id128/id128-util.h b/src/libsystemd/sd-id128/id128-util.h
new file mode 100644
index 0000000..53ba50a
--- /dev/null
+++ b/src/libsystemd/sd-id128/id128-util.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <fcntl.h>
+#include <stdbool.h>
+
+#include "sd-id128.h"
+
+#include "errno-util.h"
+#include "hash-funcs.h"
+#include "macro.h"
+
+bool id128_is_valid(const char *s) _pure_;
+
+typedef enum Id128Flag {
+        ID128_FORMAT_PLAIN  = 1 << 0,  /* formatted as 32 hex chars as-is */
+        ID128_FORMAT_UUID   = 1 << 1,  /* formatted as 36 character uuid string */
+        ID128_FORMAT_ANY    = ID128_FORMAT_PLAIN | ID128_FORMAT_UUID,
+
+        ID128_SYNC_ON_WRITE = 1 << 2, /* Sync the file after write. Used only when writing an ID. */
+        ID128_REFUSE_NULL   = 1 << 3, /* Refuse all zero ID with -ENOMEDIUM. */
+} Id128Flag;
+
+int id128_from_string_nonzero(const char *s, sd_id128_t *ret);
+
+int id128_read_fd(int fd, Id128Flag f, sd_id128_t *ret);
+int id128_read_at(int dir_fd, const char *path, Id128Flag f, sd_id128_t *ret);
+static inline int id128_read(const char *path, Id128Flag f, sd_id128_t *ret) {
+        return id128_read_at(AT_FDCWD, path, f, ret);
+}
+
+int id128_write_fd(int fd, Id128Flag f, sd_id128_t id);
+int id128_write_at(int dir_fd, const char *path, Id128Flag f, sd_id128_t id);
+static inline int id128_write(const char *path, Id128Flag f, sd_id128_t id) {
+        return id128_write_at(AT_FDCWD, path, f, id);
+}
+
+int id128_get_machine(const char *root, sd_id128_t *ret);
+int id128_get_machine_at(int rfd, sd_id128_t *ret);
+
+void id128_hash_func(const sd_id128_t *p, struct siphash *state);
+int id128_compare_func(const sd_id128_t *a, const sd_id128_t *b) _pure_;
+extern const struct hash_ops id128_hash_ops;
+extern const struct hash_ops id128_hash_ops_free;
+
+sd_id128_t id128_make_v4_uuid(sd_id128_t id);
+
+int id128_get_product(sd_id128_t *ret);
+
+sd_id128_t id128_digest(const void *data, size_t size);
+
+/* A helper to check for the three relevant cases of "machine ID not initialized" */
+#define ERRNO_IS_NEG_MACHINE_ID_UNSET(r)        \
+        IN_SET(r,                               \
+               -ENOENT,                         \
+               -ENOMEDIUM,                      \
+               -ENOPKG)
+_DEFINE_ABS_WRAPPER(MACHINE_ID_UNSET);