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Differential D28677 Diff 83996 sys/contrib/openzfs/module/icp/io/skein_mod.c

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sys/contrib/openzfs/module/icp/io/skein_mod.c

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*/ */
static int static int
skein_digest_update_uio(skein_ctx_t *ctx, const crypto_data_t *data) skein_digest_update_uio(skein_ctx_t *ctx, const crypto_data_t *data)
{ {
off_t offset = data->cd_offset; off_t offset = data->cd_offset;
size_t length = data->cd_length; size_t length = data->cd_length;
uint_t vec_idx = 0; uint_t vec_idx = 0;
size_t cur_len; size_t cur_len;
uio_t *uio = data->cd_uio; zfs_uio_t *uio = data->cd_uio;
/* we support only kernel buffer */ /* we support only kernel buffer */
if (uio_segflg(uio) != UIO_SYSSPACE) if (zfs_uio_segflg(uio) != UIO_SYSSPACE)
return (CRYPTO_ARGUMENTS_BAD); return (CRYPTO_ARGUMENTS_BAD);
/* /*
* Jump to the first iovec containing data to be * Jump to the first iovec containing data to be
* digested. * digested.
*/ */
offset = uio_index_at_offset(uio, offset, &vec_idx); offset = zfs_uio_index_at_offset(uio, offset, &vec_idx);
if (vec_idx == uio_iovcnt(uio)) { if (vec_idx == zfs_uio_iovcnt(uio)) {
/* /*
* The caller specified an offset that is larger than the * The caller specified an offset that is larger than the
* total size of the buffers it provided. * total size of the buffers it provided.
*/ */
return (CRYPTO_DATA_LEN_RANGE); return (CRYPTO_DATA_LEN_RANGE);
} }
/* /*
* Now do the digesting on the iovecs. * Now do the digesting on the iovecs.
*/ */
while (vec_idx < uio_iovcnt(uio) && length > 0) { while (vec_idx < zfs_uio_iovcnt(uio) && length > 0) {
cur_len = MIN(uio_iovlen(uio, vec_idx) - offset, length); cur_len = MIN(zfs_uio_iovlen(uio, vec_idx) - offset, length);
SKEIN_OP(ctx, Update, (uint8_t *)uio_iovbase(uio, vec_idx) SKEIN_OP(ctx, Update, (uint8_t *)zfs_uio_iovbase(uio, vec_idx)
+ offset, cur_len); + offset, cur_len);
length -= cur_len; length -= cur_len;
vec_idx++; vec_idx++;
offset = 0; offset = 0;
} }
if (vec_idx == uio_iovcnt(uio) && length > 0) { if (vec_idx == zfs_uio_iovcnt(uio) && length > 0) {
/* /*
* The end of the specified iovec's was reached but * The end of the specified iovec's was reached but
* the length requested could not be processed, i.e. * the length requested could not be processed, i.e.
* The caller requested to digest more data than it provided. * The caller requested to digest more data than it provided.
*/ */
return (CRYPTO_DATA_LEN_RANGE); return (CRYPTO_DATA_LEN_RANGE);
} }
return (CRYPTO_SUCCESS); return (CRYPTO_SUCCESS);
} }
/* /*
* Performs a Final on a context and writes to a uio digest output. * Performs a Final on a context and writes to a uio digest output.
*/ */
static int static int
skein_digest_final_uio(skein_ctx_t *ctx, crypto_data_t *digest, skein_digest_final_uio(skein_ctx_t *ctx, crypto_data_t *digest,
crypto_req_handle_t req) crypto_req_handle_t req)
{ {
off_t offset = digest->cd_offset; off_t offset = digest->cd_offset;
uint_t vec_idx = 0; uint_t vec_idx = 0;
uio_t *uio = digest->cd_uio; zfs_uio_t *uio = digest->cd_uio;
/* we support only kernel buffer */ /* we support only kernel buffer */
if (uio_segflg(uio) != UIO_SYSSPACE) if (zfs_uio_segflg(uio) != UIO_SYSSPACE)
return (CRYPTO_ARGUMENTS_BAD); return (CRYPTO_ARGUMENTS_BAD);
/* /*
* Jump to the first iovec containing ptr to the digest to be returned. * Jump to the first iovec containing ptr to the digest to be returned.
*/ */
offset = uio_index_at_offset(uio, offset, &vec_idx); offset = zfs_uio_index_at_offset(uio, offset, &vec_idx);
if (vec_idx == uio_iovcnt(uio)) { if (vec_idx == zfs_uio_iovcnt(uio)) {
/* /*
* The caller specified an offset that is larger than the * The caller specified an offset that is larger than the
* total size of the buffers it provided. * total size of the buffers it provided.
*/ */
return (CRYPTO_DATA_LEN_RANGE); return (CRYPTO_DATA_LEN_RANGE);
} }
if (offset + CRYPTO_BITS2BYTES(ctx->sc_digest_bitlen) <= if (offset + CRYPTO_BITS2BYTES(ctx->sc_digest_bitlen) <=
uio_iovlen(uio, vec_idx)) { zfs_uio_iovlen(uio, vec_idx)) {
/* The computed digest will fit in the current iovec. */ /* The computed digest will fit in the current iovec. */
SKEIN_OP(ctx, Final, SKEIN_OP(ctx, Final,
(uchar_t *)uio_iovbase(uio, vec_idx) + offset); (uchar_t *)zfs_uio_iovbase(uio, vec_idx) + offset);
} else { } else {
uint8_t *digest_tmp; uint8_t *digest_tmp;
off_t scratch_offset = 0; off_t scratch_offset = 0;
size_t length = CRYPTO_BITS2BYTES(ctx->sc_digest_bitlen); size_t length = CRYPTO_BITS2BYTES(ctx->sc_digest_bitlen);
size_t cur_len; size_t cur_len;
digest_tmp = kmem_alloc(CRYPTO_BITS2BYTES( digest_tmp = kmem_alloc(CRYPTO_BITS2BYTES(
ctx->sc_digest_bitlen), crypto_kmflag(req)); ctx->sc_digest_bitlen), crypto_kmflag(req));
if (digest_tmp == NULL) if (digest_tmp == NULL)
return (CRYPTO_HOST_MEMORY); return (CRYPTO_HOST_MEMORY);
SKEIN_OP(ctx, Final, digest_tmp); SKEIN_OP(ctx, Final, digest_tmp);
while (vec_idx < uio_iovcnt(uio) && length > 0) { while (vec_idx < zfs_uio_iovcnt(uio) && length > 0) {
cur_len = MIN(uio_iovlen(uio, vec_idx) - offset, cur_len = MIN(zfs_uio_iovlen(uio, vec_idx) - offset,
length); length);
bcopy(digest_tmp + scratch_offset, bcopy(digest_tmp + scratch_offset,
uio_iovbase(uio, vec_idx) + offset, cur_len); zfs_uio_iovbase(uio, vec_idx) + offset, cur_len);
length -= cur_len; length -= cur_len;
vec_idx++; vec_idx++;
scratch_offset += cur_len; scratch_offset += cur_len;
offset = 0; offset = 0;
} }
kmem_free(digest_tmp, CRYPTO_BITS2BYTES(ctx->sc_digest_bitlen)); kmem_free(digest_tmp, CRYPTO_BITS2BYTES(ctx->sc_digest_bitlen));
if (vec_idx == uio_iovcnt(uio) && length > 0) { if (vec_idx == zfs_uio_iovcnt(uio) && length > 0) {
/* /*
* The end of the specified iovec's was reached but * The end of the specified iovec's was reached but
* the length requested could not be processed, i.e. * the length requested could not be processed, i.e.
* The caller requested to digest more data than it * The caller requested to digest more data than it
* provided. * provided.
*/ */
return (CRYPTO_DATA_LEN_RANGE); return (CRYPTO_DATA_LEN_RANGE);
} }
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