1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
/* $OpenBSD: util.c,v 1.12 2003/06/28 04:55:07 deraadt Exp $ */
/* $NetBSD: util.c,v 1.5 1996/08/31 20:58:29 mycroft Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratories.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)util.c 8.1 (Berkeley) 6/6/93
*/
#include <sys/types.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include "config.h"
static void nomem(void);
static void vxerror(const char *, int, const char *, va_list);
/*
* Malloc, with abort on error.
*/
void *
emalloc(size_t size)
{
void *p;
if ((p = malloc(size)) == NULL)
nomem();
memset(p, 0, size);
return (p);
}
/*
* Realloc, with abort on error.
*/
void *
erealloc(void *p, size_t size)
{
if ((p = realloc(p, size)) == NULL)
nomem();
return (p);
}
static void
nomem(void)
{
(void)fprintf(stderr, "config: out of memory\n");
exit(1);
}
/*
* Prepend the source path to a file name.
*/
char *
sourcepath(const char *file)
{
char *cp;
int len = strlen(srcdir) + 1 + strlen(file) + 1;
cp = emalloc(len);
(void)snprintf(cp, len, "%s/%s", srcdir, file);
return (cp);
}
static struct nvlist *nvhead;
struct nvlist *
newnv(const char *name, const char *str, void *ptr, int i, struct nvlist *next)
{
struct nvlist *nv;
if ((nv = nvhead) == NULL)
nv = emalloc(sizeof(*nv));
else
nvhead = nv->nv_next;
nv->nv_next = next;
nv->nv_name = (char *)name;
if (ptr == NULL)
nv->nv_str = str;
else {
if (str != NULL)
panic("newnv");
nv->nv_ptr = ptr;
}
nv->nv_int = i;
return (nv);
}
/*
* Free an nvlist structure (just one).
*/
void
nvfree(struct nvlist *nv)
{
nv->nv_next = nvhead;
nvhead = nv;
}
/*
* Free an nvlist (the whole list).
*/
void
nvfreel(struct nvlist *nv)
{
struct nvlist *next;
for (; nv != NULL; nv = next) {
next = nv->nv_next;
nv->nv_next = nvhead;
nvhead = nv;
}
}
/*
* External (config file) error. Complain, using current file
* and line number.
*/
void
error(const char *fmt, ...)
{
va_list ap;
extern const char *yyfile;
va_start(ap, fmt);
vxerror(yyfile, currentline(), fmt, ap);
va_end(ap);
}
/*
* Delayed config file error (i.e., something was wrong but we could not
* find out about it until later).
*/
void
xerror(const char *file, int line, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vxerror(file, line, fmt, ap);
va_end(ap);
}
/*
* Internal form of error() and xerror().
*/
static void
vxerror(const char *file, int line, const char *fmt, va_list ap)
{
(void)fprintf(stderr, "%s:%d: ", file, line);
(void)vfprintf(stderr, fmt, ap);
(void)putc('\n', stderr);
errors++;
}
/*
* Internal error, abort.
*/
__dead void
panic(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
(void)fprintf(stderr, "config: panic: ");
(void)vfprintf(stderr, fmt, ap);
(void)putc('\n', stderr);
va_end(ap);
exit(2);
}
|
