pkgerr.c revision 9781:ccf49524d5dc 
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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27
28/*
29 * Module:	pkgerr.c
30 * Description:
31 *	Module for handling error messages that come from libpkg libraries.
32 */
33
34#include <stdio.h>
35#include <string.h>
36#include <sys/types.h>
37#include <locale.h>
38#include <libintl.h>
39#include <stdlib.h>
40#include <sys/varargs.h>
41#include "pkgerr.h"
42
43/* max length of any formatted error message */
44#define	MAX_ERRMSGLEN	1024
45
46/* private structures (not visible outside this file) */
47struct _pkg_err_struct {
48    int			nerrs;
49    char		**msgs;
50    PKG_ERR_CODE	*errs;
51};
52
53/* ---------------------- public functions ----------------------- */
54
55PKG_ERR
56*pkgerr_new()
57{
58	PKG_ERR	*newerr;
59
60	newerr = (PKG_ERR *)malloc(sizeof (PKG_ERR));
61	newerr->nerrs = 0;
62	newerr->msgs = NULL;
63	newerr->errs = NULL;
64	return (newerr);
65}
66
67void
68pkgerr_add(PKG_ERR *err, PKG_ERR_CODE code, char *fmt, ...)
69{
70	char		errmsgbuf[1024];
71	va_list		ap;
72
73	va_start(ap, fmt);
74	(void) vsnprintf(errmsgbuf, MAX_ERRMSGLEN, fmt, ap);
75	va_end(ap);
76
77	err->nerrs++;
78
79	err->msgs = (char **)realloc(err->msgs,
80	    err->nerrs * sizeof (char *));
81	err->errs = (PKG_ERR_CODE *)realloc(err->errs,
82	    err->nerrs * sizeof (PKG_ERR_CODE));
83	err->msgs[err->nerrs - 1] = strdup(errmsgbuf);
84	err->errs[err->nerrs - 1] = code;
85}
86
87void
88pkgerr_clear(PKG_ERR *err)
89{
90	int i;
91
92	for (i = 0; i < err->nerrs; i++) {
93		free(err->msgs[i]);
94	}
95
96	free(err->msgs);
97	free(err->errs);
98	err->msgs = NULL;
99	err->errs = NULL;
100	err->nerrs = 0;
101}
102
103int
104pkgerr_dump(PKG_ERR *err, FILE *fp)
105{
106	int i;
107
108	for (i = 0; i < err->nerrs; i++) {
109		(void) fprintf(fp, err->msgs[i]);
110	}
111	return (0);
112}
113
114int
115pkgerr_num(PKG_ERR *err)
116{
117	return (err->nerrs);
118}
119
120char
121*pkgerr_get(PKG_ERR *err, int pos)
122{
123	if (pos < 0 || pos > (err->nerrs - 1)) {
124		return (NULL);
125	}
126
127	return (err->msgs[pos]);
128}
129
130void
131pkgerr_free(PKG_ERR *err)
132{
133	pkgerr_clear(err);
134	free(err);
135}
136