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Add some hacks to get stdin piping working more correctly in windows

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The way pipes work in windows is not the same as unix, though I'm not
entirely clear on the differences. This patch changes the windows pipe
method to return non-inheritable fds, and the windows rust_run_program
method to duplicate them before spawning the new process.

This allows make-check-pretty to work on windows.
This commit is contained in:
Brian Anderson
2011-08-03 14:50:51 -07:00
parent e33de59e47
commit 4ae6c835cb
3 changed files with 80 additions and 6 deletions
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src/rt/rust_run_program.cpp
+18 -3
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@@ -12,9 +12,20 @@ rust_run_program(void* task, const char* argv[],
ZeroMemory(&si, sizeof(STARTUPINFO));
si.cb = sizeof(STARTUPINFO);
si.dwFlags = STARTF_USESTDHANDLES;
si.hStdInput = (HANDLE)_get_osfhandle(in_fd ? in_fd : 0);
si.hStdOutput = (HANDLE)_get_osfhandle(out_fd ? out_fd : 1);
si.hStdError = (HANDLE)_get_osfhandle(err_fd ? err_fd : 2);
HANDLE curproc = GetCurrentProcess();
HANDLE origStdin = (HANDLE)_get_osfhandle(in_fd ? in_fd : 0);
if (!DuplicateHandle(curproc, origStdin,
curproc, &si.hStdInput, 0, 1, DUPLICATE_SAME_ACCESS))
return -1;
HANDLE origStdout = (HANDLE)_get_osfhandle(out_fd ? out_fd : 1);
if (!DuplicateHandle(curproc, origStdout,
curproc, &si.hStdOutput, 0, 1, DUPLICATE_SAME_ACCESS))
return -1;
HANDLE origStderr = (HANDLE)_get_osfhandle(err_fd ? err_fd : 2);
if (!DuplicateHandle(curproc, origStderr,
curproc, &si.hStdError, 0, 1, DUPLICATE_SAME_ACCESS))
return -1;
size_t cmd_len = 0;
for (const char** arg = argv; *arg; arg++) {
@@ -32,6 +43,10 @@ rust_run_program(void* task, const char* argv[],
PROCESS_INFORMATION pi;
BOOL created = CreateProcess(NULL, cmd, NULL, NULL, TRUE,
0, NULL, NULL, &si, &pi);
CloseHandle(si.hStdInput);
CloseHandle(si.hStdOutput);
CloseHandle(si.hStdError);
free(cmd);
if (!created) return -1;