obtain a file descriptor that refers to a process NAME pidfd_open - obtain a file descriptor that refers to a process LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <s…fast user-space locking NAME futex - fast user-space locking LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <linux/futex.h> /* Definition of FUTEX_* constants */ #incl…manipulate file descriptor NAME fcntl - manipulate file descriptor LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <fcntl.h> int fcntl(int fd , int op , ... /* arg */ )…manipulate file descriptor NAME fcntl - manipulate file descriptor LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <fcntl.h> int fcntl(int fd , int op , ... /* arg */ )…