This repository contains standalone programs to demonstrate a feature or concept.

List of Programs

1. unshare

   1. unshare-files: demonstrates CLONE_FILES flag for unshare. This flag creates a seperate copy of descriptor table so that the other processes doen't affect the file descriptors on this one.
   2. unshare-fs: demonstrates CLONE_FS flag for unshare. This flag seperates current working directory, directory attributes, etc. from other processes.
   3. unshare-pid: demonstrates CLONE_NEWPID flag for unshare. This flag creates the first child process to pid 1 which acts as init for that namespace.

2. gcc-attributes

   1. constructor.c: demonstrated the use of constructor and destructor GCC attributes.
   2. constructor-hook.c: expands on the previous example to use constructor with LD_PRELOAD to hook libc function.
   3. noreturn.c: demonstrates noreturn GCC attribute and C11 feature.
   4. unused.c: demonstrates unused GCC attribute.