mirror of
https://github.com/decompals/wibo.git
synced 2025-10-16 15:15:10 +00:00
70 lines
1.7 KiB
C++
70 lines
1.7 KiB
C++
#include "namedpipeapi.h"
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#include "common.h"
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#include "context.h"
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#include "errors.h"
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#include "handles.h"
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#include "internal.h"
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#include <fcntl.h>
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#include <unistd.h>
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namespace kernel32 {
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namespace {
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void configureInheritability(int fd, bool inherit) {
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if (fd < 0) {
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return;
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}
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int flags = fcntl(fd, F_GETFD);
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if (flags == -1) {
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return;
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}
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if (inherit) {
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flags &= ~FD_CLOEXEC;
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} else {
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flags |= FD_CLOEXEC;
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}
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fcntl(fd, F_SETFD, flags);
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}
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} // namespace
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BOOL WIN_FUNC CreatePipe(PHANDLE hReadPipe, PHANDLE hWritePipe, LPSECURITY_ATTRIBUTES lpPipeAttributes, DWORD nSize) {
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HOST_CONTEXT_GUARD();
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DEBUG_LOG("CreatePipe(%p, %p, %p, %u)\n", hReadPipe, hWritePipe, lpPipeAttributes, nSize);
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if (!hReadPipe || !hWritePipe) {
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wibo::lastError = ERROR_INVALID_PARAMETER;
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return FALSE;
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}
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*hReadPipe = nullptr;
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*hWritePipe = nullptr;
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int pipeFds[2];
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if (pipe(pipeFds) != 0) {
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setLastErrorFromErrno();
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return FALSE;
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}
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bool inheritHandles = lpPipeAttributes && lpPipeAttributes->bInheritHandle;
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configureInheritability(pipeFds[0], inheritHandles);
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configureInheritability(pipeFds[1], inheritHandles);
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if (nSize != 0) {
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// Best-effort adjustment; ignore failures as recommended by docs.
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fcntl(pipeFds[0], F_SETPIPE_SZ, static_cast<int>(nSize));
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fcntl(pipeFds[1], F_SETPIPE_SZ, static_cast<int>(nSize));
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}
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auto readObj = make_pin<FileObject>(pipeFds[0]);
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readObj->shareAccess = FILE_SHARE_READ | FILE_SHARE_WRITE;
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auto writeObj = make_pin<FileObject>(pipeFds[1]);
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writeObj->shareAccess = FILE_SHARE_READ | FILE_SHARE_WRITE;
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*hReadPipe = wibo::handles().alloc(std::move(readObj), FILE_GENERIC_READ, 0);
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*hWritePipe = wibo::handles().alloc(std::move(writeObj), FILE_GENERIC_WRITE, 0);
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return TRUE;
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}
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} // namespace kernel32
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