46 lines
2.5 KiB
C
46 lines
2.5 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/assert.h"
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#include "libc/calls/struct/iovec.h"
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#include "libc/macros.h"
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#include "libc/sock/internal.h"
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#include "libc/sysv/consts/iov.h"
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/**
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* Converts I/O vector from System Five to WIN32 ABI.
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*
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* @return effective iovlen
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* @see IOV_MAX
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*/
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textwindows size_t iovec2nt(struct NtIovec iovnt[hasatleast 16],
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const struct iovec *iov, size_t iovlen) {
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size_t i, limit;
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for (limit = 0x7ffff000, i = 0; i < MIN(16, iovlen); ++i) {
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iovnt[i].buf = iov[i].iov_base;
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if (iov[i].iov_len < limit) {
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limit -= (iovnt[i].len = iov[i].iov_len);
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} else {
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iovnt[i].len = limit;
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break;
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}
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}
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return i;
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}
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