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comparison usr/src/cmd/mail/legal.c @ 0:c9caec207d52 b86

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Initial porting based on b86
author Koji Uno <koji.uno@sun.com>
date Tue, 02 Jun 2009 18:56:50 +0900
parents
children 1a15d5aaf794
comparison
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-1:000000000000 0:c9caec207d52
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 /*
27 * Copyright (c) 2001 by Sun Microsystems, Inc.
28 * All rights reserved.
29 */
30
31 #pragma ident "@(#)legal.c 1.8 05/06/08 SMI"
32 /*
33 * NAME
34 * legal - check existence of file
35 *
36 * SYNOPSIS
37 * int legal(char *file)
38 *
39 * DESCRIPTION
40 * legal() checks to see if "file" is a writable file name.
41 *
42 * Returns:
43 * 0 -> file or directory exists, but is unwriteable
44 * 1 -> file exists writeable
45 * 2 -> file does not exist, but can be created
46 */
47
48 #include "mail.h"
49 int
50 legal(file)
51 register char *file;
52 {
53 register char *sp;
54 char dfile[MAXFILENAME];
55
56 /*
57 * If file does not exist then try "." if file name has
58 * no "/". For file names that have a "/", try check
59 * for existence of previous directory.
60 */
61 if (access(file, A_EXIST) == A_OK) {
62 if (access(file, A_WRITE) == A_OK)
63 return (1);
64 else return (0);
65 } else {
66 if ((sp = strrchr(file, '/')) == NULL) {
67 strcpy(dfile, ".");
68 } else if (sp == file) {
69 strcpy(dfile, "/");
70 } else {
71 if ((sp - file + 1) > MAXFILENAME)
72 return (0);
73 strncpy(dfile, file, sp - file);
74 dfile[sp - file] = '\0';
75 }
76 if (access(dfile, A_WRITE) == CERROR)
77 return (0);
78 return (2);
79 }
80 }