ncurses 5.0
[ncurses.git] / ncurses / tinfo / access.c
1 /****************************************************************************
2  * Copyright (c) 1998 Free Software Foundation, Inc.                        *
3  *                                                                          *
4  * Permission is hereby granted, free of charge, to any person obtaining a  *
5  * copy of this software and associated documentation files (the            *
6  * "Software"), to deal in the Software without restriction, including      *
7  * without limitation the rights to use, copy, modify, merge, publish,      *
8  * distribute, distribute with modifications, sublicense, and/or sell       *
9  * copies of the Software, and to permit persons to whom the Software is    *
10  * furnished to do so, subject to the following conditions:                 *
11  *                                                                          *
12  * The above copyright notice and this permission notice shall be included  *
13  * in all copies or substantial portions of the Software.                   *
14  *                                                                          *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
18  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
22  *                                                                          *
23  * Except as contained in this notice, the name(s) of the above copyright   *
24  * holders shall not be used in advertising or otherwise to promote the     *
25  * sale, use or other dealings in this Software without prior written       *
26  * authorization.                                                           *
27  ****************************************************************************/
28
29 /****************************************************************************
30  *  Author: Thomas E. Dickey <dickey@clark.net> 1998                        *
31  ****************************************************************************/
32
33
34 #include <curses.priv.h>
35
36 MODULE_ID("$Id: access.c,v 1.1 1998/07/25 20:17:09 tom Exp $")
37
38 int _nc_access(const char *path, int mode)
39 {
40         if (access(path, mode) < 0) {
41                 if ((mode & W_OK) != 0
42                  && errno == ENOENT) {
43                         char head[PATH_MAX];
44                         char *leaf = strrchr(strcpy(head, path), '/');
45                         if (leaf == 0)
46                                 leaf = head;
47                         *leaf = '\0';
48                         if (head == leaf)
49                                 (void)strcpy(head, ".");
50                         return access(head, R_OK|W_OK|X_OK);
51                 }
52                 return -1;
53         }
54         return 0;
55 }