| 466 | } |
| 467 | |
| 468 | void |
| 469 | crypto_cursor_copydata(struct crypto_buffer_cursor *cc, int size, void *vdst) |
| 470 | { |
| 471 | size_t remain, todo; |
| 472 | const char *src; |
| 473 | char *dst; |
| 474 | |
| 475 | dst = vdst; |
| 476 | switch (cc->cc_type) { |
| 477 | case CRYPTO_BUF_CONTIG: |
| 478 | MPASS(cc->cc_buf_len >= size); |
| 479 | memcpy(dst, cc->cc_buf, size); |
| 480 | cc->cc_buf += size; |
| 481 | cc->cc_buf_len -= size; |
| 482 | break; |
| 483 | case CRYPTO_BUF_MBUF: |
| 484 | for (;;) { |
| 485 | KASSERT((cc->cc_mbuf->m_flags & M_EXTPG) == 0, |
| 486 | ("%s: not supported for unmapped mbufs", __func__)); |
| 487 | src = mtod(cc->cc_mbuf, const char *) + cc->cc_offset; |
| 488 | remain = cc->cc_mbuf->m_len - cc->cc_offset; |
| 489 | todo = MIN(remain, size); |
| 490 | memcpy(dst, src, todo); |
| 491 | dst += todo; |
| 492 | if (todo < remain) { |
| 493 | cc->cc_offset += todo; |
| 494 | break; |
| 495 | } |
| 496 | size -= todo; |
| 497 | cc->cc_mbuf = cc->cc_mbuf->m_next; |
| 498 | cc->cc_offset = 0; |
| 499 | if (size == 0) |
| 500 | break; |
| 501 | } |
| 502 | break; |
| 503 | case CRYPTO_BUF_VMPAGE: |
| 504 | for (;;) { |
| 505 | src = (char *)PHYS_TO_DMAP(VM_PAGE_TO_PHYS( |
| 506 | *cc->cc_vmpage)) + cc->cc_offset; |
| 507 | remain = MIN(PAGE_SIZE - cc->cc_offset, cc->cc_buf_len); |
| 508 | todo = MIN(remain, size); |
| 509 | memcpy(dst, src, todo); |
| 510 | src += todo; |
| 511 | cc->cc_buf_len -= todo; |
| 512 | if (todo < remain) { |
| 513 | cc->cc_offset += todo; |
| 514 | break; |
| 515 | } |
| 516 | size -= todo; |
| 517 | cc->cc_vmpage++; |
| 518 | cc->cc_offset = 0; |
| 519 | if (size == 0) |
| 520 | break; |
| 521 | } |
| 522 | break; |
| 523 | case CRYPTO_BUF_UIO: |
| 524 | for (;;) { |
| 525 | src = (const char *)cc->cc_iov->iov_base + |
no test coverage detected