45 lines
2.5 KiB
C
45 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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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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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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