int af_alg_do_crypt(const struct af_alg *aas, uint8_t *out, const uint8_t *in,
size_t len, int decrypt)
{
uint32_t op = decrypt ? ALG_OP_DECRYPT : ALG_OP_ENCRYPT;
uint8_t cbuf[CMSG_SPACE(sizeof(op))];
struct msghdr msg;
struct cmsghdr *cmsg;
struct iovec iov;
memset(&msg, 0, sizeof(msg));
memset(cbuf, 0, sizeof(cbuf));
msg.msg_control = cbuf;
msg.msg_controllen = sizeof(cbuf);
cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_level = SOL_ALG;
cmsg->cmsg_type = ALG_SET_OP;
cmsg->cmsg_len = CMSG_LEN(sizeof(op));
memcpy(CMSG_DATA(cmsg), &op, sizeof(op));
iov.iov_base = (void *)in;
iov.iov_len = len;
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
if (sendmsg(aas->fd, &msg, 0) != len)
RETFAIL(-errno);
if (read(aas->fd, out, len) != len)
RETFAIL(-errno);
return 0;
}
int init_scanline(TTF_Scan_Line *scanline, int base_size) {
CHECKPTR(scanline);
RETINIT(SUCCESS);
scanline->x = malloc(base_size * sizeof(*scanline->x));
CHECKFAIL(scanline->x, warnerr("failed to alloc scanline"));
scanline->size_x = base_size;
scanline->num_intersections = 0;
RETFAIL(free_scanline(scanline));
}
inline BISTREAM2(std::string &v)
{
size_t len;
RETFAIL(in >> len);
// FIXME: stack overflow likely
char *buf = (char*)alloca(len+1);
buf[len] = 0;
RETFAIL(in.read_pod(buf, len));
v = buf;
return in;
}