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e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
95 lines
4 KiB
C
95 lines
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 et 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/calls/internal.h"
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#include "libc/calls/sig.internal.h"
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#include "libc/calls/state.internal.h"
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#include "libc/calls/struct/sigset.internal.h"
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#include "libc/calls/syscall_support-nt.internal.h"
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#include "libc/nt/createfile.h"
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#include "libc/nt/enum/accessmask.h"
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#include "libc/nt/enum/creationdisposition.h"
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#include "libc/nt/enum/fileflagandattributes.h"
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#include "libc/nt/enum/filesharemode.h"
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#include "libc/nt/ipc.h"
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#include "libc/nt/runtime.h"
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#include "libc/sysv/consts/limits.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sysv/errfuns.h"
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static textwindows int sys_pipe_nt_impl(int pipefd[2], unsigned flags) {
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uint32_t mode;
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int64_t hin, hout;
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int reader, writer;
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char16_t pipename[64];
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__create_pipe_name(pipename);
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__fds_lock();
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if ((reader = __reservefd_unlocked(-1)) == -1) {
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__fds_unlock();
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return -1;
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}
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if ((writer = __reservefd_unlocked(-1)) == -1) {
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__releasefd(reader);
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__fds_unlock();
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return -1;
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}
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if (~flags & O_DIRECT) {
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mode = kNtPipeTypeByte | kNtPipeReadmodeByte;
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} else {
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mode = kNtPipeTypeMessage | kNtPipeReadmodeMessage;
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}
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__fds_unlock();
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hin = CreateNamedPipe(pipename, kNtPipeAccessInbound | kNtFileFlagOverlapped,
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mode, 1, PIPE_BUF, PIPE_BUF, 0, &kNtIsInheritable);
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__fds_lock();
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if (hin != -1) {
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if ((hout = CreateFile(
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pipename, kNtGenericWrite,
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kNtFileShareRead | kNtFileShareWrite | kNtFileShareDelete,
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&kNtIsInheritable, kNtOpenExisting, kNtFileFlagOverlapped, 0)) !=
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-1) {
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g_fds.p[reader].kind = kFdFile;
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g_fds.p[reader].flags = O_RDONLY | flags;
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g_fds.p[reader].mode = 0010444;
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g_fds.p[reader].handle = hin;
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g_fds.p[writer].kind = kFdFile;
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g_fds.p[writer].flags = O_WRONLY | flags;
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g_fds.p[writer].mode = 0010222;
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g_fds.p[writer].handle = hout;
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pipefd[0] = reader;
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pipefd[1] = writer;
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__fds_unlock();
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return 0;
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} else {
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CloseHandle(hin);
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}
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}
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__releasefd(writer);
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__releasefd(reader);
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__fds_unlock();
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return -1;
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}
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textwindows int sys_pipe_nt(int pipefd[2], unsigned flags) {
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int rc;
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BLOCK_SIGNALS;
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rc = sys_pipe_nt_impl(pipefd, flags);
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ALLOW_SIGNALS;
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return rc;
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}
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