косвенный системный вызов (indirect system call)
Синопсис (Synopsis)
#include <sys/syscall.h> /* Definition of SYS_* constants */
#include <unistd.h>
long syscall(long number, ...);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
syscall():
Since glibc 2.19:
_DEFAULT_SOURCE
Before glibc 2.19:
_BSD_SOURCE || _SVID_SOURCE
