die.h

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * By Daniel Borkmann <daniel@netsniff-ng.org>
   4  * Copyright 2009, 2010 Daniel Borkmann.
   5  * Subject to the GPL, version 2.
   6  */
   7
   8 #ifndef DIE_H
   9 #define DIE_H
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <stdarg.h>
  14 #include <string.h>
  15 #include <errno.h>
  16 #include <unistd.h>
  17 #include <syslog.h>
  18
  19 #include "built_in.h"
  20
  21 static inline void panic(const char *format, ...)  __check_format_printf(1, 2);
  22 static inline void syslog_panic(const char *format,
  23                                 ...) __check_format_printf(1, 2);
  24 static inline void syslog_maybe(int may, int priority,
  25                                 const char *format, ...) __check_format_printf(3, 4);
  26 static inline void whine(const char *format, ...) __check_format_printf(1, 2);
  27 static inline void verbose_l1(const char *format,
  28                               ...) __check_format_printf(1, 2);
  29 static inline void verbose_l2(const char *format,
  30                               ...) __check_format_printf(1, 2);
  31
  32 static inline void die(void)
  33 {
  34         exit(EXIT_FAILURE);
  35 }
  36
  37 static inline void _die(void)
  38 {
  39         _exit(EXIT_FAILURE);
  40 }
  41
  42 static inline void panic(const char *format, ...)
  43 {
  44         va_list vl;
  45
  46         va_start(vl, format);
  47         vfprintf(stderr, format, vl);
  48         va_end(vl);
  49
  50         die();
  51 }
  52
  53 static inline void syslog_panic(const char *format, ...)
  54 {
  55         va_list vl;
  56
  57         va_start(vl, format);
  58         vsyslog(LOG_ERR, format, vl);
  59         va_end(vl);
  60
  61         die();
  62 }
  63
  64 static inline void syslog_maybe(int may, int priority, const char *format, ...)
  65 {
  66         if (!!may) {
  67                 va_list vl;
  68
  69                 va_start(vl, format);
  70                 vsyslog(priority, format, vl);
  71                 va_end(vl);
  72         }
  73 }
  74
  75 static inline void whine(const char *format, ...)
  76 {
  77         va_list vl;
  78
  79         va_start(vl, format);
  80         vfprintf(stderr, format, vl);
  81         va_end(vl);
  82 }
  83
  84 extern int verbose_level;
  85
  86 static inline void verbose_l1(const char *format, ...)
  87 {
  88         va_list vl;
  89
  90         if (verbose_level < 1)
  91                 return;
  92
  93         va_start(vl, format);
  94         vfprintf(stderr, format, vl);
  95         va_end(vl);
  96 }
  97
  98 static inline void verbose_l2(const char *format, ...)
  99 {
 100         va_list vl;
 101
 102         if (verbose_level < 2)
 103                 return;
 104
 105         va_start(vl, format);
 106         vfprintf(stderr, format, vl);
 107         va_end(vl);
 108 }
 109
 110 #endif /* DIE_H */