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
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
/*
* Copyright (c) International Business Machines Corp., 2006
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdarg.h>
#include <syslog.h>
#include <stdlib.h>
#include <sys/errno.h>
#include <string.h>
#include "error.h"
#define MAXLINE 4096
#define MAXWIDTH 80
static FILE *logfp = NULL;
static void err_doit(int, int, const char *, va_list);
int
read_procfile(FILE *fp_out, const char *procfile)
{
FILE *fp;
if (!fp_out)
return -ENXIO;
fp = fopen(procfile, "r");
if (!fp)
return -ENOENT;
while(!feof(fp)) {
int c = fgetc(fp);
if (c == EOF)
return 0;
if (putc(c, fp_out) == EOF)
return -EIO;
if (ferror(fp))
return -EIO;
}
return fclose(fp);
}
void
error_initlog(const char *logfile)
{
if (!logfile)
return;
logfp = fopen(logfile, "a+");
read_procfile(logfp, "/proc/cpuinfo");
}
void
info_msg(const char *fmt, ...)
{
FILE* fpout;
char buf[MAXLINE + 1];
va_list ap;
int n;
fpout = stdout;
va_start(ap, fmt);
vsnprintf(buf, MAXLINE, fmt, ap);
n = strlen(buf);
strcat(buf, "\n");
fputs(buf, fpout);
fflush(fpout);
if (fpout != stdout)
fclose(fpout);
va_end(ap);
return;
}
void
__err_ret(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
err_doit(1, LOG_INFO, fmt, ap);
va_end(ap);
return;
}
void
__err_sys(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
err_doit(1, LOG_ERR, fmt, ap);
va_end(ap);
exit(EXIT_FAILURE);
}
void
__err_msg(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
err_doit(0, LOG_INFO, fmt, ap);
va_end(ap);
return;
}
void
__err_quit(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
err_doit(0, LOG_ERR, fmt, ap);
va_end(ap);
exit(EXIT_FAILURE);
}
void
__err_dump(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
err_doit(1, LOG_ERR, fmt, ap);
va_end(ap);
abort(); /* dump core and terminate */
exit(EXIT_FAILURE); /* shouldn't get here */
}
/**
* If a logfile is used we must not print on stderr and stdout
* anymore. Since pfilfash might be used in a server context, it is
* even dangerous to write to those descriptors.
*/
static void
err_doit(int errnoflag, int level __attribute__((unused)),
const char *fmt, va_list ap)
{
FILE* fpout;
int errno_save, n;
char buf[MAXLINE + 1];
fpout = stderr;
errno_save = errno; /* value caller might want printed */
vsnprintf(buf, MAXLINE, fmt, ap); /* safe */
n = strlen(buf);
if (errnoflag)
snprintf(buf + n, MAXLINE - n, ": %s", strerror(errno_save));
strcat(buf, "\n");
if (logfp) {
fputs(buf, logfp);
fflush(logfp);
return; /* exit when logging completes */
}
if (fpout == stderr) {
/* perform line wrap when outputting to stderr */
int word_len, post_len, chars;
char *buf_ptr;
const char *frmt = "%*s%n %n";
chars = 0;
buf_ptr = buf;
while (sscanf(buf_ptr, frmt, &word_len, &post_len) != EOF) {
int i;
char word[word_len + 1];
char post[post_len + 1];
strncpy(word, buf_ptr, word_len);
word[word_len] = '\0';
buf_ptr += word_len;
post_len -= word_len;
if (chars + word_len > MAXWIDTH) {
fputc('\n', fpout);
chars = 0;
}
fputs(word, fpout);
chars += word_len;
if (post_len > 0) {
strncpy(post, buf_ptr, post_len);
post[post_len] = '\0';
buf_ptr += post_len;
}
for (i = 0; i < post_len; i++) {
int inc = 1, chars_new;
if (post[i] == '\t')
inc = 8;
if (post[i] == '\n') {
inc = 0;
chars_new = 0;
} else
chars_new = chars + inc;
if (chars_new > MAXWIDTH) {
fputc('\n', fpout);
chars_new = inc;
}
fputc(post[i], fpout);
chars = chars_new;
}
}
}
else
fputs(buf, fpout);
fflush(fpout);
if (fpout != stderr)
fclose(fpout);
return;
}
|
