The SEF Library runs on a Linux®️ host. It supports user mode. The library and driver do not support forked processes. The SEF Library API is defined by SEFAPI.h and implemented in libsef.a or libsef.so. It is platform-agnostic and is usable by any code that can use a C interface. The library I/O path functions come in both synchronous and asynchronous versions, which typically have identical functionality and semantics. When this is not true, the API will call out how the synchronous and asynchronous versions differ. Note that callbacks from the library are made from a static internal thread pool and so should not block for long periods of time.