xref: /titanic_41/usr/src/cmd/sgs/tsort/common/zfopen.c (revision d6555420322a42c16b93414c29a62f8e841abc7b)
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 
23 /*
24  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
25  * Use is subject to license terms.
26  */
27 
28 /*	Copyright (c) 1988 AT&T	*/
29 /*	  All Rights Reserved  	*/
30 
31 
32 #pragma ident	"%Z%%M%	%I%	%E% SMI"
33 
34 /*
35  *	fopen(3S) with error checking
36  */
37 
38 #include	"errmsg.h"
39 #include	<stdio.h>
40 
41 FILE *
zfopen(int severity,char * path,char * type)42 zfopen(int severity, char *path, char *type)
43 {
44 	FILE	*fp;	/* file pointer */
45 
46 	if ((fp = fopen(path, type)) == NULL) {
47 		char	*mode;
48 
49 		if (type[1] == '+')
50 			mode = "updating";
51 		else
52 			switch (type[0]) {
53 			case 'r':
54 				mode = "reading";
55 				break;
56 			case 'w':
57 				mode = "writing";
58 				break;
59 			case 'a':
60 				mode = "appending";
61 				break;
62 			default:
63 				mode = type;
64 			}
65 		_errmsg("UXzfopen1", severity,
66 			"Cannot open file \"%s\" for %s.",
67 			path, mode);
68 	}
69 	return (fp);
70 }
71