1/*-
2 * Copyright (c) 2009 Michihiro NAKAJIMA
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "archive_platform.h"
27
28#if defined(_WIN32) && !defined(__CYGWIN__)
29
30#include "filter_fork.h"
31
32pid_t
33__archive_create_child(const char *path, int *child_stdin, int *child_stdout)
34{
35	HANDLE childStdout[2], childStdin[2], childStdinWr, childStdoutRd;
36	SECURITY_ATTRIBUTES secAtts;
37	STARTUPINFO staInfo;
38	PROCESS_INFORMATION childInfo;
39	char cmd[MAX_PATH];
40	DWORD mode;
41
42	secAtts.nLength = sizeof(SECURITY_ATTRIBUTES);
43	secAtts.bInheritHandle = TRUE;
44	secAtts.lpSecurityDescriptor = NULL;
45	if (CreatePipe(&childStdout[0], &childStdout[1], &secAtts, 0) == 0)
46		goto fail;
47	if (DuplicateHandle(GetCurrentProcess(), childStdout[0],
48	    GetCurrentProcess(), &childStdoutRd, 0, FALSE,
49	    DUPLICATE_SAME_ACCESS) == 0) {
50		CloseHandle(childStdout[0]);
51		CloseHandle(childStdout[1]);
52		goto fail;
53	}
54	CloseHandle(childStdout[0]);
55
56	if (CreatePipe(&childStdin[0], &childStdin[1], &secAtts, 0) == 0) {
57		CloseHandle(childStdoutRd);
58		CloseHandle(childStdout[1]);
59		goto fail;
60	}
61
62	if (DuplicateHandle(GetCurrentProcess(), childStdin[1],
63	    GetCurrentProcess(), &childStdinWr, 0, FALSE,
64	    DUPLICATE_SAME_ACCESS) == 0) {
65		CloseHandle(childStdoutRd);
66		CloseHandle(childStdout[1]);
67		CloseHandle(childStdin[0]);
68		CloseHandle(childStdin[1]);
69		goto fail;
70	}
71	CloseHandle(childStdin[1]);
72
73	memset(&staInfo, 0, sizeof(staInfo));
74	staInfo.cb = sizeof(staInfo);
75	staInfo.hStdOutput = childStdout[1];
76	staInfo.hStdInput = childStdin[0];
77	staInfo.wShowWindow = SW_HIDE;
78	staInfo.dwFlags = STARTF_USEFILLATTRIBUTE | STARTF_USECOUNTCHARS |
79	    STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
80	strncpy(cmd, path, sizeof(cmd)-1);
81	cmd[sizeof(cmd)-1] = '\0';
82	if (CreateProcessA(NULL, cmd, NULL, NULL, TRUE, 0, NULL, NULL,
83	    &staInfo, &childInfo) == 0) {
84		CloseHandle(childStdoutRd);
85		CloseHandle(childStdout[1]);
86		CloseHandle(childStdin[0]);
87		CloseHandle(childStdinWr);
88		goto fail;
89	}
90	WaitForInputIdle(childInfo.hProcess, INFINITE);
91	CloseHandle(childInfo.hProcess);
92	CloseHandle(childInfo.hThread);
93
94	mode = PIPE_NOWAIT;
95	SetNamedPipeHandleState(childStdoutRd, &mode, NULL, NULL);
96	*child_stdout = _open_osfhandle((intptr_t)childStdoutRd, _O_RDONLY);
97	*child_stdin = _open_osfhandle((intptr_t)childStdinWr, _O_WRONLY);
98
99	return (childInfo.dwProcessId);
100
101fail:
102	return (-1);
103}
104
105void
106__archive_check_child(int in, int out)
107{
108	(void)in; /* UNSED */
109	(void)out; /* UNSED */
110	Sleep(100);
111}
112
113#endif /* _WIN32 && !__CYGWIN__ */
114