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Add convenience wrappers for common uio usage

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The macOS uio struct is opaque and the API must be used, this
makes the smallest changes to the code for all platforms.

Reviewed-by: Matt Macy <mmacy@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Jorgen Lundman <lundman@lundman.net>
Closes #10412
This commit is contained in:
Jorgen Lundman
2020-06-15 02:09:55 +09:00
committed by GitHub
parent 4f73576ea1
commit 883a40fff4
15 changed files with 216 additions and 250 deletions
Download Patch File Download Diff File Expand all files Collapse all files
module/icp/algs/modes/modes.c
+14 -16
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@@ -44,16 +44,13 @@ crypto_init_ptrs(crypto_data_t *out, void **iov_or_mp, offset_t *current_offset)
case CRYPTO_DATA_UIO: {
uio_t *uiop = out->cd_uio;
uintptr_t vec_idx;
uint_t vec_idx;
offset = out->cd_offset;
for (vec_idx = 0; vec_idx < uiop->uio_iovcnt &&
offset >= uiop->uio_iov[vec_idx].iov_len;
offset -= uiop->uio_iov[vec_idx++].iov_len)
;
offset = uio_index_at_offset(uiop, offset, &vec_idx);
*current_offset = offset;
*iov_or_mp = (void *)vec_idx;
*iov_or_mp = (void *)(uintptr_t)vec_idx;
break;
}
} /* end switch */
@@ -89,33 +86,34 @@ crypto_get_ptrs(crypto_data_t *out, void **iov_or_mp, offset_t *current_offset,
case CRYPTO_DATA_UIO: {
uio_t *uio = out->cd_uio;
iovec_t *iov;
offset_t offset;
uintptr_t vec_idx;
uint_t vec_idx;
uint8_t *p;
uint64_t iov_len;
void *iov_base;
offset = *current_offset;
vec_idx = (uintptr_t)(*iov_or_mp);
iov = (iovec_t *)&uio->uio_iov[vec_idx];
p = (uint8_t *)iov->iov_base + offset;
uio_iov_at_index(uio, vec_idx, &iov_base, &iov_len);
p = (uint8_t *)iov_base + offset;
*out_data_1 = p;
if (offset + amt <= iov->iov_len) {
if (offset + amt <= iov_len) {
/* can fit one block into this iov */
*out_data_1_len = amt;
*out_data_2 = NULL;
*current_offset = offset + amt;
} else {
/* one block spans two iovecs */
*out_data_1_len = iov->iov_len - offset;
if (vec_idx == uio->uio_iovcnt)
*out_data_1_len = iov_len - offset;
if (vec_idx == uio_iovcnt(uio))
return;
vec_idx++;
iov = (iovec_t *)&uio->uio_iov[vec_idx];
*out_data_2 = (uint8_t *)iov->iov_base;
uio_iov_at_index(uio, vec_idx, &iov_base, &iov_len);
*out_data_2 = (uint8_t *)iov_base;
*current_offset = amt - *out_data_1_len;
}
*iov_or_mp = (void *)vec_idx;
*iov_or_mp = (void *)(uintptr_t)vec_idx;
break;
}
} /* end switch */