bsd-cygwin_util.c revision 204917 
1/*
2 * Copyright (c) 2000, 2001, Corinna Vinschen <vinschen@cygnus.com>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 * Created: Sat Sep 02 12:17:00 2000 cv
25 *
26 * This file contains functions for forcing opened file descriptors to
27 * binary mode on Windows systems.
28 */
29
30#include "includes.h"
31
32#ifdef HAVE_CYGWIN
33
34#if defined(open) && open == binary_open
35# undef open
36#endif
37#if defined(pipe) && open == binary_pipe
38# undef pipe
39#endif
40
41#include <sys/types.h>
42
43#include <fcntl.h>
44#include <stdlib.h>
45#include <unistd.h>
46#include <windows.h>
47
48#include "xmalloc.h"
49
50int
51binary_open(const char *filename, int flags, ...)
52{
53	va_list ap;
54	mode_t mode;
55
56	va_start(ap, flags);
57	mode = va_arg(ap, mode_t);
58	va_end(ap);
59	return (open(filename, flags | O_BINARY, mode));
60}
61
62int
63binary_pipe(int fd[2])
64{
65	int ret = pipe(fd);
66
67	if (!ret) {
68		setmode(fd[0], O_BINARY);
69		setmode(fd[1], O_BINARY);
70	}
71	return (ret);
72}
73
74int
75check_ntsec(const char *filename)
76{
77	return (pathconf(filename, _PC_POSIX_PERMISSIONS));
78}
79
80#define NL(x) x, (sizeof (x) - 1)
81#define WENV_SIZ (sizeof (wenv_arr) / sizeof (wenv_arr[0]))
82
83static struct wenv {
84	const char *name;
85	size_t namelen;
86} wenv_arr[] = {
87	{ NL("ALLUSERSPROFILE=") },
88	{ NL("COMPUTERNAME=") },
89	{ NL("COMSPEC=") },
90	{ NL("CYGWIN=") },
91	{ NL("OS=") },
92	{ NL("PATH=") },
93	{ NL("PATHEXT=") },
94	{ NL("SYSTEMDRIVE=") },
95	{ NL("SYSTEMROOT=") },
96	{ NL("WINDIR=") }
97};
98
99char **
100fetch_windows_environment(void)
101{
102	char **e, **p;
103	unsigned int i, idx = 0;
104
105	p = xcalloc(WENV_SIZ + 1, sizeof(char *));
106	for (e = environ; *e != NULL; ++e) {
107		for (i = 0; i < WENV_SIZ; ++i) {
108			if (!strncmp(*e, wenv_arr[i].name, wenv_arr[i].namelen))
109				p[idx++] = *e;
110		}
111	}
112	p[idx] = NULL;
113	return p;
114}
115
116void
117free_windows_environment(char **p)
118{
119	xfree(p);
120}
121
122#endif /* HAVE_CYGWIN */
123