MSGCMSGCLOEXEC
MSGCMSGCLOEXEC is a flag used in conjunction with the `msgctl` system call on Linux systems. This flag is part of the `msgget` and `msgctl` system calls, which are used for managing System V message queues. When MSGCMSGCLOEXEC is set, it instructs the operating system to automatically close the file descriptor associated with the message queue when a new program is executed within the same process. This is a security feature, preventing child processes from inheriting access to message queues that are no longer needed by the parent process.
The primary purpose of MSGCMSGCLOEXEC is to enhance security by reducing the potential for unintended information