die.h

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * Copyright 2009, 2010 Daniel Borkmann.
   4  * Subject to the GPL, version 2.
   5  */
   6
   7 #ifndef DIE_H
   8 #define DIE_H
   9
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <stdarg.h>
  13 #include <string.h>
  14 #include <errno.h>
  15 #include <unistd.h>
  16 #include <syslog.h>
  17
  18 #include "built_in.h"
  19
  20 static inline void panic(const char *format, ...)  __check_format_printf(1, 2);
  21 static inline void syslog_panic(const char *format,
  22                                 ...) __check_format_printf(1, 2);
  23 static inline void syslog_maybe(int may, int priority,
  24                                 const char *format, ...) __check_format_printf(3, 4);
  25
  26 static inline void __noreturn die(void)
  27 {
  28         exit(EXIT_FAILURE);
  29 }
  30
  31 static inline void __noreturn _die(void)
  32 {
  33         _exit(EXIT_FAILURE);
  34 }
  35
  36 static inline void __noreturn panic(const char *format, ...)
  37 {
  38         va_list vl;
  39
  40         va_start(vl, format);
  41         vfprintf(stderr, format, vl);
  42         va_end(vl);
  43
  44         die();
  45 }
  46
  47 static inline void __noreturn syslog_panic(const char *format, ...)
  48 {
  49         va_list vl;
  50
  51         va_start(vl, format);
  52         vsyslog(LOG_ERR, format, vl);
  53         va_end(vl);
  54
  55         die();
  56 }
  57
  58 static inline void syslog_maybe(int maybe, int priority, const char *format, ...)
  59 {
  60         if (!!maybe) {
  61                 va_list vl;
  62
  63                 va_start(vl, format);
  64                 vsyslog(priority, format, vl);
  65                 va_end(vl);
  66         }
  67 }
  68
  69 #endif /* DIE_H */