1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*0Sstevel@tonic-gate
29*0Sstevel@tonic-gate #include <stdlib.h>
30*0Sstevel@tonic-gate #include <stdarg.h>
31*0Sstevel@tonic-gate #include <stdio.h>
32*0Sstevel@tonic-gate #include <errno.h>
33*0Sstevel@tonic-gate #include <string.h>
34*0Sstevel@tonic-gate
35*0Sstevel@tonic-gate #include "volume_error.h"
36*0Sstevel@tonic-gate
37*0Sstevel@tonic-gate #define VOLUME_ERROR_BUFSIZE 1024
38*0Sstevel@tonic-gate static char volume_error[VOLUME_ERROR_BUFSIZE];
39*0Sstevel@tonic-gate
40*0Sstevel@tonic-gate /*
41*0Sstevel@tonic-gate * Retrieve the error string for the given error code.
42*0Sstevel@tonic-gate *
43*0Sstevel@tonic-gate * @param error
44*0Sstevel@tonic-gate * If error is less than zero, it is assumed to be a
45*0Sstevel@tonic-gate * custom error code. If error is greater than zero, it
46*0Sstevel@tonic-gate * is assumed to be an error defined in errno.h.
47*0Sstevel@tonic-gate *
48*0Sstevel@tonic-gate * @return the error string set by volume_set_error()
49*0Sstevel@tonic-gate * if error < 0
50*0Sstevel@tonic-gate *
51*0Sstevel@tonic-gate * @return the error string returned by strerror()
52*0Sstevel@tonic-gate * if error > 0
53*0Sstevel@tonic-gate */
54*0Sstevel@tonic-gate char *
get_error_string(int error)55*0Sstevel@tonic-gate get_error_string(
56*0Sstevel@tonic-gate int error)
57*0Sstevel@tonic-gate {
58*0Sstevel@tonic-gate if (error < 0) {
59*0Sstevel@tonic-gate return (volume_error);
60*0Sstevel@tonic-gate }
61*0Sstevel@tonic-gate
62*0Sstevel@tonic-gate if (error > 0) {
63*0Sstevel@tonic-gate return (strerror(error));
64*0Sstevel@tonic-gate }
65*0Sstevel@tonic-gate
66*0Sstevel@tonic-gate return (NULL);
67*0Sstevel@tonic-gate }
68*0Sstevel@tonic-gate
69*0Sstevel@tonic-gate /*
70*0Sstevel@tonic-gate * Set the error string for the most recent error. This message can
71*0Sstevel@tonic-gate * be retrieved with get_error_string(error), assuming error is less
72*0Sstevel@tonic-gate * than zero.
73*0Sstevel@tonic-gate *
74*0Sstevel@tonic-gate * @param fmt
75*0Sstevel@tonic-gate * printf format string
76*0Sstevel@tonic-gate *
77*0Sstevel@tonic-gate * @return the number of characters formatted
78*0Sstevel@tonic-gate * if successful
79*0Sstevel@tonic-gate *
80*0Sstevel@tonic-gate * @return negative value
81*0Sstevel@tonic-gate * if an error occurred
82*0Sstevel@tonic-gate */
83*0Sstevel@tonic-gate /*PRINTFLIKE1*/
84*0Sstevel@tonic-gate int
volume_set_error(char * fmt,...)85*0Sstevel@tonic-gate volume_set_error(
86*0Sstevel@tonic-gate char *fmt,
87*0Sstevel@tonic-gate ...)
88*0Sstevel@tonic-gate {
89*0Sstevel@tonic-gate int ret = 0;
90*0Sstevel@tonic-gate
91*0Sstevel@tonic-gate va_list ap;
92*0Sstevel@tonic-gate va_start(ap, fmt);
93*0Sstevel@tonic-gate ret = vsnprintf(volume_error, VOLUME_ERROR_BUFSIZE, fmt, ap);
94*0Sstevel@tonic-gate va_end(ap);
95*0Sstevel@tonic-gate
96*0Sstevel@tonic-gate return (ret);
97*0Sstevel@tonic-gate }
98