создать дочерний процесс (create a child process)
Синопсис (Synopsis)
/* Prototype for the glibc wrapper function */
#define _GNU_SOURCE
#include <sched.h>
int clone(int (*fn)(void *), void *stack, int flags, void *arg, ...
/* pid_t *parent_tid, void *tls, pid_t *child_tid */ );
/* For the prototype of the raw clone() system call, see NOTES */
#include <linux/sched.h> /* Definition of struct clone_args */
#include <sched.h> /* Definition of CLONE_* constants */
#include <sys/syscall.h> /* Definition of SYS_* constants */
#include <unistd.h>
long syscall(SYS_clone3, struct clone_args *cl_args, size_t size);
Note: glibc provides no wrapper for clone3(), necessitating the
use of syscall(2).
