46 lines
2.7 KiB
C
46 lines
2.7 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 │
|
|
│ │
|
|
│ This program is free software; you can redistribute it and/or modify │
|
|
│ it under the terms of the GNU General Public License as published by │
|
|
│ the Free Software Foundation; version 2 of the License. │
|
|
│ │
|
|
│ This program is distributed in the hope that it will be useful, but │
|
|
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
|
|
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
|
|
│ General Public License for more details. │
|
|
│ │
|
|
│ You should have received a copy of the GNU General Public License │
|
|
│ along with this program; if not, write to the Free Software │
|
|
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
|
|
│ 02110-1301 USA │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/assert.h"
|
|
#include "libc/calls/internal.h"
|
|
#include "libc/calls/struct/iovec.h"
|
|
#include "libc/errno.h"
|
|
#include "libc/limits.h"
|
|
#include "libc/nt/errors.h"
|
|
#include "libc/nt/runtime.h"
|
|
#include "libc/nt/struct/overlapped.h"
|
|
#include "libc/nt/struct/teb.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
|
|
textwindows ssize_t read$nt(struct Fd *fd, const struct iovec *iov,
|
|
size_t iovlen, ssize_t opt_offset) {
|
|
uint32_t got;
|
|
struct NtOverlapped overlap;
|
|
while (iovlen && !iov[0].iov_len) iov++, iovlen--;
|
|
if (ReadFile(fd->handle, iovlen ? iov[0].iov_base : NULL,
|
|
iovlen ? clampio(iov[0].iov_len) : 0, &got,
|
|
offset2overlap(opt_offset, &overlap))) {
|
|
return got;
|
|
} else if (NtGetErr() == kNtErrorBrokenPipe) {
|
|
return 0; /* read() doesn't EPIPE lool */
|
|
} else {
|
|
return winerr();
|
|
}
|
|
}
|