# The gnu subdirectory exists for things common to both Linux-based and # Hurd-based GNU systems. gnu # Linux shares most of the syscalls which are also common to BSD and SVR4. unix/common # Linux as of version 1.3.29 has all functions of the mmap family # which are described in POSIX.4. Missing is only madvise() so # we define a stub here. unix/mman # Linux has network support in the kernel. unix/inet