10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
50Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
60Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
70Sstevel@tonic-gate * with the License.
80Sstevel@tonic-gate *
90Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
100Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
110Sstevel@tonic-gate * See the License for the specific language governing permissions
120Sstevel@tonic-gate * and limitations under the License.
130Sstevel@tonic-gate *
140Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
150Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
160Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
170Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
180Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
190Sstevel@tonic-gate *
200Sstevel@tonic-gate * CDDL HEADER END
210Sstevel@tonic-gate */
22132Srobinson
23132Srobinson /*
24*1219Sraf * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
25132Srobinson * Use is subject to license terms.
26132Srobinson */
27132Srobinson
280Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
290Sstevel@tonic-gate /* All Rights Reserved */
300Sstevel@tonic-gate
31132Srobinson #pragma ident "%Z%%M% %I% %E% SMI"
320Sstevel@tonic-gate
33*1219Sraf #include "mt.h"
340Sstevel@tonic-gate #include "uucp.h"
350Sstevel@tonic-gate
360Sstevel@tonic-gate /* copy str into data space -- caller should report errors. */
370Sstevel@tonic-gate
38132Srobinson static char *
strsave(const char * str)39132Srobinson strsave(const char *str)
400Sstevel@tonic-gate {
41132Srobinson char *rval;
420Sstevel@tonic-gate
430Sstevel@tonic-gate rval = malloc(strlen(str) + 1);
440Sstevel@tonic-gate if (rval != 0)
45132Srobinson (void) strcpy(rval, str);
460Sstevel@tonic-gate return (rval);
470Sstevel@tonic-gate }
480Sstevel@tonic-gate
49132Srobinson /*
50132Srobinson * Determine if the effective user id has the appropriate permission
51132Srobinson * on a file. Modeled after access(2).
52132Srobinson * amode:
53132Srobinson * 00 just checks for file existence.
54132Srobinson * 04 checks read permission.
55132Srobinson * 02 checks write permission.
56132Srobinson * 01 checks execute/search permission.
57132Srobinson * other bits are ignored quietly.
58132Srobinson */
590Sstevel@tonic-gate
60132Srobinson static int
eaccess(char * path,mode_t amode)61132Srobinson eaccess(char *path, mode_t amode)
620Sstevel@tonic-gate {
630Sstevel@tonic-gate struct stat s;
640Sstevel@tonic-gate uid_t euid;
650Sstevel@tonic-gate
66*1219Sraf if (stat(path, &s) == -1)
670Sstevel@tonic-gate return (-1); /* can't stat file */
680Sstevel@tonic-gate amode &= 07;
690Sstevel@tonic-gate
70132Srobinson if ((euid = geteuid()) == 0) /* root can do all */
71132Srobinson return (0);
720Sstevel@tonic-gate if (euid == s.st_uid)
730Sstevel@tonic-gate s.st_mode >>= 6; /* use owner bits */
740Sstevel@tonic-gate else if (getegid() == s.st_gid)
750Sstevel@tonic-gate s.st_mode >>= 3; /* use group bits */
760Sstevel@tonic-gate
77132Srobinson if ((amode & s.st_mode) == amode)
780Sstevel@tonic-gate return (0); /* access permitted */
790Sstevel@tonic-gate errno = EACCES;
800Sstevel@tonic-gate return (-1);
810Sstevel@tonic-gate }
82