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
|
/****************************************************************************
**
** File: error.c
**
** Author: Mike Borella
**
** Comments: Try to gracefully handle errors.
**
*****************************************************************************/
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <sys/types.h>
#include <errno.h>
#include "error.h"
#include "config.h"
int GWF_error_flag = 0;
/*
* This avoids a warning with glibc compilation
*/
#ifndef errno
extern int errno;
#endif
/*
* If we have strerror() we won't use sys_errlist, so don't bother defining
* it.
*/
#ifndef HAVE_STRERROR
extern char * sys_errlist[];
#endif
/*----------------------------------------------------------------------------
**
** Function: GWFi_strerror()
**
** Comments: Use strerror() if this system supports it. Roll our own otherwise.
**
**----------------------------------------------------------------------------
*/
char *GWFi_strerror(int errnum)
{
#ifdef HAVE_STRERROR
return (strerror(errnum));
#else
extern int sys_nerr;
static char ebuf[20];
if ((int) errnum < sys_nerr)
return ((char *) sys_errlist[errnum]);
sprintf(ebuf, "Unknown error: %d", errnum);
return(ebuf);
#endif
}
/*----------------------------------------------------------------------------
**
** GWF_error()
**
** Generic error dumping. Here's how the arguments are used
**
** syserr: 0 is not an error from a system call, non-zero otherwise
** filename: filename of the caller. Optional.
** line: line number of the caller. Optional, set to 0 is filename and
** line number info is not to be printed
**
**----------------------------------------------------------------------------
*/
void GWF_error(int syserr, char *filename, int line, const char *fmt,
va_list args)
{
/*
* Dump the error message
*/
fprintf(stderr,"ERROR: ");
if (line)
fprintf(stderr, "%s line %d: ", filename, line);
vfprintf(stderr, fmt, args);
/*
* If this is a system error, print the errno info. Otherwise, don't
*/
if (syserr)
{
fprintf(stderr," (%d ", errno);
fprintf(stderr, "%s)\n", GWFi_strerror(errno));
}
else
fprintf(stderr, "\n");
}
/*****************************************************************************
* Externally-visible functions are below here
****************************************************************************/
/*----------------------------------------------------------------------------
**
** GWF_error_fatal()
**
** General fatal error.
**
**----------------------------------------------------------------------------
*/
void GWF_error_fatal(char *fmt, ...)
{
va_list args;
va_start(args,fmt);
GWF_error(0, "", 0, fmt, args);
va_end(args);
abort();
}
/*----------------------------------------------------------------------------
**
** GWF_error_system()
**
** General system error.
**
**----------------------------------------------------------------------------
*/
void GWF_error_system(char *fmt, ...)
{
va_list args;
va_start(args, fmt);
GWF_error(1, "", 0, fmt, args);
va_end(args);
abort();
}
/*----------------------------------------------------------------------------
**
** GWF_error_message()
**
** General non-terminal error.
**
**----------------------------------------------------------------------------
*/
void GWF_error_message(char *fmt, ...)
{
va_list args;
va_start(args, fmt);
GWF_error(1, "", 0, fmt, args);
va_end(args);
}
|
