allocate or free a protection key NAME pkey_alloc, pkey_free - allocate or free a protection key LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #define _GNU_SOURCE /* See featu…allocate or free a protection key NAME pkey_alloc, pkey_free - allocate or free a protection key LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #define _GNU_SOURCE /* See featu…start/stop swapping to file/device NAME swapon, swapoff - start/stop swapping to file/device LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <sys/swap.h> int swapon(con…start/stop swapping to file/device NAME swapon, swapoff - start/stop swapping to file/device LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <sys/swap.h> int swapon(con…transfer data between file descriptors NAME sendfile - transfer data between file descriptors LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <sys/sendfile.h> ssize_t s…transfer data between file descriptors NAME sendfile - transfer data between file descriptors LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <sys/sendfile.h> ssize_t s…process trace NAME ptrace - process trace LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <sys/ptrace.h> long ptrace(enum __ptrace_request op , pid_t pid , void * addr …