mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 11:37:35 +00:00
61 lines
3.1 KiB
C
61 lines
3.1 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/assert.h"
|
|
#include "libc/calls/internal.h"
|
|
#include "libc/calls/struct/iovec.h"
|
|
#include "libc/limits.h"
|
|
#include "libc/nt/files.h"
|
|
#include "libc/nt/runtime.h"
|
|
#include "libc/nt/struct/overlapped.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
|
|
static textwindows ssize_t sys_write_nt_impl(struct Fd *fd, void *data,
|
|
size_t size, ssize_t offset) {
|
|
uint32_t sent;
|
|
struct NtOverlapped overlap;
|
|
if (WriteFile(fd->handle, data, clampio(size), &sent,
|
|
offset2overlap(offset, &overlap))) {
|
|
/* TODO(jart): Trigger SIGPIPE on kNtErrorBrokenPipe */
|
|
return sent;
|
|
} else {
|
|
return __winerr();
|
|
}
|
|
}
|
|
|
|
textwindows ssize_t sys_write_nt(struct Fd *fd, const struct iovec *iov,
|
|
size_t iovlen, ssize_t opt_offset) {
|
|
ssize_t rc;
|
|
size_t i, total;
|
|
uint32_t size, wrote;
|
|
struct NtOverlapped overlap;
|
|
while (iovlen && !iov[0].iov_len) iov++, iovlen--;
|
|
if (iovlen) {
|
|
for (total = i = 0; i < iovlen; ++i) {
|
|
if (!iov[i].iov_len) continue;
|
|
rc = sys_write_nt_impl(fd, iov[i].iov_base, iov[i].iov_len, opt_offset);
|
|
if (rc == -1) return -1;
|
|
total += rc;
|
|
if (opt_offset != -1) opt_offset += rc;
|
|
if (rc < iov[i].iov_len) break;
|
|
}
|
|
return total;
|
|
} else {
|
|
return sys_write_nt_impl(fd, NULL, 0, opt_offset);
|
|
}
|
|
}
|