die.h

   1 #ifndef DIE_H
   2 #define DIE_H
   3
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <stdarg.h>
   7 #include <stdbool.h>
   8 #include <string.h>
   9 #include <errno.h>
  10 #include <unistd.h>
  11 #include <syslog.h>
  12
  13 #include "built_in.h"
  14
  15 extern void panic_handler_add(void (*on_panic)(void *arg), void *arg);
  16 extern void call_panic_handlers(void);
  17
  18 static inline void panic(const char *format, ...)  __check_format_printf(1, 2);
  19 static inline void syslog_panic(const char *format,
  20                                 ...) __check_format_printf(1, 2);
  21 static inline void syslog_maybe(bool cond, int priority,
  22                                 const char *format, ...) __check_format_printf(3, 4);
  23
  24 static inline void __noreturn __die_hard(void)
  25 {
  26         call_panic_handlers();
  27         exit(EXIT_FAILURE);
  28 }
  29
  30 static inline void __noreturn __die_harder(void)
  31 {
  32         call_panic_handlers();
  33         _exit(EXIT_FAILURE);
  34 }
  35
  36 static inline void __noreturn die(void)
  37 {
  38         __die_hard();
  39 }
  40
  41 static inline void __noreturn _die(void)
  42 {
  43         __die_harder();
  44 }
  45
  46 static inline void __noreturn panic(const char *format, ...)
  47 {
  48         va_list vl;
  49
  50         va_start(vl, format);
  51         vfprintf(stderr, format, vl);
  52         va_end(vl);
  53
  54         die();
  55 }
  56
  57 static inline void __noreturn syslog_panic(const char *format, ...)
  58 {
  59         va_list vl;
  60
  61         va_start(vl, format);
  62         vsyslog(LOG_ERR, format, vl);
  63         va_end(vl);
  64
  65         die();
  66 }
  67
  68 static inline void syslog_maybe(bool cond, int priority,
  69                                 const char *format, ...)
  70 {
  71         if (cond) {
  72                 va_list vl;
  73
  74                 va_start(vl, format);
  75                 vsyslog(priority, format, vl);
  76                 va_end(vl);
  77         }
  78 }
  79
  80 #endif /* DIE_H */