488570ebd4
Many open source projects have moved to using SPDX identifiers to specify license information, reducing the amount of boilerplate code in every source file. This patch replaces the bulk of SPDK .c, .cpp and Makefiles with the BSD-3-Clause identifier. Almost all of these files share the exact same license text, and this patch only modifies the files that contain the most common license text. There can be slight variations because the third clause contains company names - most say "Intel Corporation", but there are instances for Nvidia, Samsung, Eideticom and even "the copyright holder". Used a bash script to automate replacement of the license text with SPDX identifier which is checked into scripts/spdx.sh. Signed-off-by: Jim Harris <james.r.harris@intel.com> Change-Id: Iaa88ab5e92ea471691dc298cfe41ebfb5d169780 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12904 Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com> Community-CI: Mellanox Build Bot Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Dong Yi <dongx.yi@intel.com> Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com> Reviewed-by: Paul Luse <paul.e.luse@intel.com> Reviewed-by: <qun.wan@intel.com>
106 lines
2.4 KiB
C
106 lines
2.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*/
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#include "spdk/util.h"
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size_t
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spdk_ioviter_first(struct spdk_ioviter *iter,
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struct iovec *siov, size_t siovcnt,
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struct iovec *diov, size_t diovcnt,
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void **src, void **dst)
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{
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iter->siov = siov;
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iter->siovcnt = siovcnt;
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iter->diov = diov;
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iter->diovcnt = diovcnt;
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iter->sidx = 0;
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iter->didx = 0;
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iter->siov_len = siov[0].iov_len;
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iter->siov_base = siov[0].iov_base;
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iter->diov_len = diov[0].iov_len;
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iter->diov_base = diov[0].iov_base;
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return spdk_ioviter_next(iter, src, dst);
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}
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size_t
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spdk_ioviter_next(struct spdk_ioviter *iter, void **src, void **dst)
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{
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size_t len = 0;
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if (iter->sidx == iter->siovcnt ||
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iter->didx == iter->diovcnt ||
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iter->siov_len == 0 ||
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iter->diov_len == 0) {
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return 0;
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}
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*src = iter->siov_base;
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*dst = iter->diov_base;
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len = spdk_min(iter->siov_len, iter->diov_len);
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if (iter->siov_len == iter->diov_len) {
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/* Advance both iovs to the next element */
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iter->sidx++;
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if (iter->sidx == iter->siovcnt) {
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return len;
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}
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iter->didx++;
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if (iter->didx == iter->diovcnt) {
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return len;
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}
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iter->siov_len = iter->siov[iter->sidx].iov_len;
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iter->siov_base = iter->siov[iter->sidx].iov_base;
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iter->diov_len = iter->diov[iter->didx].iov_len;
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iter->diov_base = iter->diov[iter->didx].iov_base;
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} else if (iter->siov_len < iter->diov_len) {
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/* Advance only the source to the next element */
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iter->sidx++;
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if (iter->sidx == iter->siovcnt) {
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return len;
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}
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iter->diov_base += iter->siov_len;
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iter->diov_len -= iter->siov_len;
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iter->siov_len = iter->siov[iter->sidx].iov_len;
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iter->siov_base = iter->siov[iter->sidx].iov_base;
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} else {
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/* Advance only the destination to the next element */
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iter->didx++;
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if (iter->didx == iter->diovcnt) {
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return len;
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}
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iter->siov_base += iter->diov_len;
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iter->siov_len -= iter->diov_len;
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iter->diov_len = iter->diov[iter->didx].iov_len;
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iter->diov_base = iter->diov[iter->didx].iov_base;
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}
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return len;
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}
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size_t
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spdk_iovcpy(struct iovec *siov, size_t siovcnt, struct iovec *diov, size_t diovcnt)
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{
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struct spdk_ioviter iter;
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size_t len, total_sz;
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void *src, *dst;
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total_sz = 0;
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for (len = spdk_ioviter_first(&iter, siov, siovcnt, diov, diovcnt, &src, &dst);
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len != 0;
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len = spdk_ioviter_next(&iter, &src, &dst)) {
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memcpy(dst, src, len);
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total_sz += len;
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}
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return total_sz;
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}
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