1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
23/*	  All Rights Reserved  	*/
24
25
26#ident	"%Z%%M%	%I%	%E% SMI"	/* from SVR4 bnu:strsave.c 1.5 */
27
28#include "uucp.h"
29
30/* #include <errno.h> */
31/* #include <malloc.h> */
32/* #include <string.h> */
33/* #include <sys/types.h> */
34/* #include <sys/stat.h> */
35
36/* copy str into data space -- caller should report errors. */
37
38GLOBAL char *
39strsave(str)
40register char *str;
41{
42	register char *rval;
43
44	rval = (char *)malloc(strlen(str) + 1);
45	if (rval != 0)
46		strcpy(rval, str);
47	return(rval);
48}
49
50/*	Determine if the effective user id has the appropriate permission
51	on a file.  Modeled after access(2).
52	amode:
53		00	just checks for file existence.
54		04	checks read permission.
55		02	checks write permission.
56		01	checks execute/search permission.
57		other bits are ignored quietly.
58*/
59
60GLOBAL int
61eaccess( path, amode )
62char		*path;
63register mode_t	amode;
64{
65	struct stat	s;
66	uid_t euid;
67
68	if( stat( path, &s ) == -1 )
69		return(-1);		/* can't stat file */
70	amode &= 07;
71
72	if( (euid = geteuid()) == 0 )
73	    return(0);			/* root can do all */
74	if( euid == s.st_uid )
75	    s.st_mode >>= 6;		/* use owner bits */
76	else if( getegid() == s.st_gid )
77	    s.st_mode >>= 3;		/* use group bits */
78
79	if( (amode & s.st_mode) == amode )
80		return(0);		/* access permitted */
81	errno = EACCES;
82	return(-1);
83}
84