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 2008 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1988 AT&T	*/
28/*	  All Rights Reserved  	*/
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32#pragma	weak _addsev = addsev
33
34#include "lint.h"
35#include "mtlib.h"
36#include "libc.h"
37#include <stdlib.h>
38#include <pfmt.h>
39#include <thread.h>
40#include "pfmt_data.h"
41#include <sys/types.h>
42#include <string.h>
43#include <synch.h>
44
45int
46addsev(int severity, const char *string)
47{
48	int i, firstfree;
49	void *new;
50
51	/* Cannot redefine standard severity */
52	if ((severity <= 4) || (severity > 255))
53		return (-1);
54
55	/* Locate severity in table */
56	lrw_wrlock(&_rw_pfmt_sev_tab);
57	for (i = 0, firstfree = -1; i < __pfmt_nsev; i++) {
58		if (__pfmt_sev_tab[i].severity == 0 && firstfree == -1)
59			firstfree = i;
60		if (__pfmt_sev_tab[i].severity == severity)
61			break;
62	}
63
64	if (i == __pfmt_nsev) {
65		if (string == NULL)	/* Removing non-existing severity */
66			return (0);
67		if (firstfree != -1)	/* Re-use old entry */
68			i = firstfree;
69		else {
70			/* Allocate new entry */
71			new = libc_realloc(__pfmt_sev_tab,
72			    sizeof (struct sev_tab) * (__pfmt_nsev + 1));
73			if (new == NULL) {
74				lrw_unlock(&_rw_pfmt_sev_tab);
75				return (-1);
76			}
77			__pfmt_nsev++;
78			__pfmt_sev_tab = new;
79		}
80	}
81	if (string == NULL) {
82		if (__pfmt_sev_tab[i].string)
83			libc_free(__pfmt_sev_tab[i].string);
84		__pfmt_sev_tab[i].severity = 0;
85		__pfmt_sev_tab[i].string = NULL;
86		lrw_unlock(&_rw_pfmt_sev_tab);
87		return (0);
88	}
89	new = libc_realloc(__pfmt_sev_tab[i].string, strlen(string) + 1);
90	if (new == NULL) {
91		lrw_unlock(&_rw_pfmt_sev_tab);
92		return (-1);
93	}
94	__pfmt_sev_tab[i].severity = severity;
95	__pfmt_sev_tab[i].string = new;
96	(void) strcpy(__pfmt_sev_tab[i].string, string);
97	lrw_unlock(&_rw_pfmt_sev_tab);
98	return (0);
99}
100