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#include <sys/syscall.h>
#include <errno.h>
#include <unistd.h>
#include <stddef.h>
int main(int argc, char **argv)
{
int has_preadv2 = 0;
int has_pwritev2 = 0;
#if defined(__NR_preadv2)
errno = 0;
syscall(__NR_preadv2, 0, NULL, 0, 0, 0);
has_preadv2 = errno != ENOSYS;
#else
has_preadv2 = 0;
#endif
#if defined(__NR_pwritev2)
errno = 0;
syscall(__NR_pwritev2, 0, NULL, 0, 0, 0);
has_pwritev2 = errno != ENOSYS;
#else
has_pwritev2 = 0;
#endif
return !(has_preadv2 && has_pwritev2);
}
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