xref: /illumos-gate/usr/src/cmd/mail/lock.c (revision 4eaa471005973e11a6110b69fe990530b3b95a38)
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 #pragma ident	"%Z%%M%	%I%	%E% SMI"
32 
33 #include "mail.h"
34 
35 void
36 lock(char *user)
37 {
38 	char	tbuf[80];
39 
40 	switch (maillock(user, 10)) {
41 	case L_SUCCESS:
42 	    return;
43 	case L_NAMELEN:
44 	    (void) snprintf(tbuf, sizeof (tbuf),
45 		"%s: Cannot create lock file. Username '%s' is > 13 chars\n",
46 		program, user);
47 	    break;
48 	case L_TMPLOCK:
49 	    strcpy(tbuf, "Cannot create temp lock file\n");
50 	    break;
51 	case L_TMPWRITE:
52 	    strcpy(tbuf, "Error writing pid to lock file\n");
53 	    break;
54 	case L_MAXTRYS:
55 	    strcpy(tbuf, "Creation of lockfile failed after 10 tries");
56 	    break;
57 	case L_ERROR:
58 	    strcpy(tbuf, "Cannot link temp lockfile to lockfile\n");
59 	    break;
60 	case L_MANLOCK:
61 	    strcpy(tbuf, "Cannot set mandatory file lock on temp lockfile\n");
62 	    break;
63 	}
64 	errmsg(E_LOCK, tbuf);
65 	if (sending) {
66 		goback(0);
67 	}
68 	done(0);
69 }
70 
71 void unlock() {
72 	mailunlock();
73 }
74