Snap for 5240760 from 20ac1203 to pi-platform-release

extern "C" {

#endif

#define NATIVE_HANDLE_MAX_FDS 1024

#define NATIVE_HANDLE_MAX_INTS 1024

/* Declare a char array for use with native_handle_init */

#define NATIVE_HANDLE_DECLARE_STORAGE(name, maxFds, maxInts) \

    alignas(native_handle_t) char (name)[                            \

#include <string.h>

#include <unistd.h>

static const int kMaxNativeFds = 1024;

static const int kMaxNativeInts = 1024;

native_handle_t* native_handle_init(char* storage, int numFds, int numInts) {

    if ((uintptr_t) storage % alignof(native_handle_t)) {

        errno = EINVAL;

}

native_handle_t* native_handle_create(int numFds, int numInts) {

    if (numFds < 0 || numInts < 0 || numFds > kMaxNativeFds || numInts > kMaxNativeInts) {

    if (numFds < 0 || numInts < 0 || numFds > NATIVE_HANDLE_MAX_FDS ||

        numInts > NATIVE_HANDLE_MAX_INTS) {

        errno = EINVAL;

        return NULL;

    }