Function anj_persistence_magic

• Defined in File persistence.h

Function Documentation

int anj_persistence_magic(const anj_persistence_context_t *ctx, const void *magic, size_t magic_size)

Writes or verifies a “magic” tag.

• In STORE mode: writes magic of size magic_size.

• In RESTORE mode: reads magic_size bytes and verifies they are identical to magic.

Typical use is to guard persisted blobs with a short prefix describing the expected format/version.

Parameters:

• ctx – Persistence context.

• magic – Pointer to expected/actual magic bytes.

• magic_size – Number of bytes (<= ANJ_PERSISTENCE_MAGIC_MAX_SIZE).

Returns:

0 on success, negative value on error or mismatch (RESTORE).