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Blocking process

Hello All,

I have one doubt. How the process is blocking on a system call. For instance, I have one system call like  socket() from glibc. This library call is going to call sys_socket() kernel function.My doubt is how the fucntion socket in the application(process) is waiting untill sys_socket returns one file descriptor, and How the sys_socketis returning the fd to a blocked call socket.



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