xref: /illumos-gate/usr/src/cmd/mail/lock.c (revision ddb365bfc9e868ad24ccdcb0dc91af18b10df082)
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 2002 Sun Microsystems, Inc.  All rights reserved.
28  * Use is subject to license terms.
29  */
30 
31 #include "mail.h"
32 
33 void
34 lock(char *user)
35 {
36 	char	tbuf[80];
37 
38 	switch (maillock(user, 10)) {
39 	case L_SUCCESS:
40 	    return;
41 	case L_NAMELEN:
42 	    (void) snprintf(tbuf, sizeof (tbuf),
43 		"%s: Cannot create lock file. Username '%s' is > 13 chars\n",
44 		program, user);
45 	    break;
46 	case L_TMPLOCK:
47 	    strcpy(tbuf, "Cannot create temp lock file\n");
48 	    break;
49 	case L_TMPWRITE:
50 	    strcpy(tbuf, "Error writing pid to lock file\n");
51 	    break;
52 	case L_MAXTRYS:
53 	    strcpy(tbuf, "Creation of lockfile failed after 10 tries");
54 	    break;
55 	case L_ERROR:
56 	    strcpy(tbuf, "Cannot link temp lockfile to lockfile\n");
57 	    break;
58 	case L_MANLOCK:
59 	    strcpy(tbuf, "Cannot set mandatory file lock on temp lockfile\n");
60 	    break;
61 	}
62 	errmsg(E_LOCK, tbuf);
63 	if (sending) {
64 		goback(0);
65 	}
66 	done(0);
67 }
68 
69 void unlock() {
70 	mailunlock();
71 }
72