mirror of
https://github.com/jart/cosmopolitan.git
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45 lines
2.4 KiB
C
45 lines
2.4 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 2021 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/calls/internal.h"
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#include "libc/errno.h"
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#include "libc/sock/sock.h"
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ssize_t WritevUninterruptible(int fd, struct iovec *iov, int iovlen) {
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ssize_t rc;
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size_t wrote;
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do {
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if ((rc = writev(fd, iov, iovlen)) != -1) {
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wrote = rc;
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do {
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if (wrote >= iov->iov_len) {
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wrote -= iov->iov_len;
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++iov;
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--iovlen;
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} else {
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iov->iov_base = (char *)iov->iov_base + wrote;
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iov->iov_len -= wrote;
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wrote = 0;
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}
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} while (wrote);
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} else if (errno != EINTR) {
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return -1;
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}
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} while (iovlen);
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return 0;
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}
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